Abrégé

A robot tool exchange device includes a main body portion attached to a robot arm, and a tool attachment portion to which a tool for the robot arm is attached. The main body portion includes a solenoid configured to move a plunger upward by a magnetic force of an electromagnet, a tubular wall that stores a lower portion of the plunger, a ball retractably held by the tubular wall, and a permanent magnet that moves the plunger downward and holds the plunger when the electromagnet is non-excited. When the plunger moves downward, the ball is pressed by the plunger and projects from the tubular wall. The tool attachment portion includes a frame member in which a hole to receive the tubular wall is formed. The frame member includes an engaging wall that engages with the ball projecting from the tubular wall.

Classes IPC  ?

• B25J 15/04 - Têtes de préhension avec possibilité pour l'enlèvement ou l'échange à distance de la tête ou de parties de celle-ci

Produits et services

Clutches for land vehicles

Abrégé

An electromagnetic coupling device includes an electromagnetic coil, a field core including a recessed portion containing the electromagnetic coil, and a terminal block inserted in a hole passing through the wall of the recessed portion. The terminal block includes a terminal portion projecting outside the field core, a pair of terminals provided at the terminal portion, and a pair of through holes passing through the terminal block via the pair of terminals. The winding start end and winding termination end of the electromagnetic coil pass through the pair of through holes, project from the pair of terminals, and are soldered to the pair of terminals together with a pair of external connection lead wires.

Classes IPC  ?

• H02K 11/25 - Dispositifs pour détecter la température ou actionnés par des valeurs de cette variable
• H02K 49/10 - Embrayages dynamo-électriquesFreins dynamo-électriques du type à aimant permanent

Abrégé

A spindle unit includes a swing mechanism fixed to a fixed frame, a support member swingably supported by the swing mechanism, a spindle main body and an electromagnetic brake supported by the support member. The spindle main body rotates integrally with a bobbin around which a yarn is wound. The electromagnetic brake applies a resistance to the rotating spindle main body. The swing mechanism includes a fixed attachment member fixed to the fixed frame, a swing shaft supported by the fixed attachment member, a spring, and a sensor. The spring applies a spring force to the support member in a direction opposite to a direction in which the support member swings by the tension of the yarn. The sensor detects the tilt amount of the support member when the support member swings.

Classes IPC  ?

• B65H 49/26 - Arbres ou broches axiaux
• B65H 59/40 - Utilisation d'indicateurs de tension
• B65H 59/04 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la délivrance du matériau à partir du paquet d'approvisionnement par dispositifs agissant sur le paquet ou le support
• B65H 59/38 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la vitesse du mécanisme d'entraînement des dispositifs de déroulage, de dévidage, d'avance, d'enroulement ou d'emmagasinage, p. ex. en réaction automatique aux variations de tension

Abrégé

A spindle unit includes a support shaft, an electromagnetic air-gap brake, a spindle member, and a coupler. The support shaft is attached to the stationary frame of a creel. The brake is connected to the front end of the support shaft. The spindle member is rotatably supported by the support shaft in a state in which the support shaft and the brake are inserted in the spindle member. The coupler couples the spindle member and the brake shaft.

Classes IPC  ?

• F16D 63/00 - Freins non prévus ailleursFreins combinant plusieurs des types mentionnés dans les groupes
• B65H 59/38 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la vitesse du mécanisme d'entraînement des dispositifs de déroulage, de dévidage, d'avance, d'enroulement ou d'emmagasinage, p. ex. en réaction automatique aux variations de tension
• F16D 121/20 - Électrique ou magnétique utilisant des électroaimants

Abrégé

An excitation operation brake includes a braking shaft, an armature that rotates integrally with the braking shaft, and a field core including a disc portion facing the armature. The disc portion includes an outer magnetic shielding portion and an inner magnetic shielding portion, which make a magnetic flux flowing through the disc portion bypass to the armature a plurality of times. The outer magnetic shielding portion includes a low-magnetic resistance path having a magnetic resistance smaller than the magnetic resistance of a magnetic path that bypasses to the armature.

Classes IPC  ?

• F16D 63/00 - Freins non prévus ailleursFreins combinant plusieurs des types mentionnés dans les groupes
• H02K 7/102 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des freins à friction
• F16D 59/00 - Freins automatiques, p. ex. entrant en action à une vitesse prédéterminée
• H02K 11/01 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour le blindage contre les champs électromagnétiques

Abrégé

An electromagnetic connecting device includes a flange of a hub, an armature supported by the flange via a leaf spring, a rotor accommodating an electromagnetic coil, and an anti-vibration member. When an electric current is supplied to the electromagnetic coil, the armature moves in the axial direction of the hub against the spring force of the leaf spring, and is attracted to the rotor. The leaf spring includes a moving portion that moves in the axial direction together with the movement of the armature. The anti-vibration member is fixed to the moving portion of the leaf spring. The anti-vibration member includes a stopper that comes in contact with the flange, and a damper that comes in contact with the armature. With this configuration, an electromagnetic connecting device capable of reducing an impact sound both when the armature is attracted and released can be manufactured at a low manufacturing cost.

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 67/02 - Combinaisons embrayage-frein
• F16D 27/14 - Éléments constitutifs
• F16F 15/12 - Suppression des vibrations dans les systèmes rotatifs par utilisation d'organes mobiles avec le système lui-même utilisant des organes élastiques ou des organes amortisseurs de friction, p. ex. entre un arbre en rotation et une masse giratoire montée dessus
• F16F 1/02 - Ressorts en acier ou faits d'un autre matériau ayant une faible friction intérieureRessorts enroulés, de torsion, à lame, en forme de coupelles, à corps annulaire ou similaire, le matériau de ressort ne jouant pas de rôle
• F16F 15/124 - Suppression des vibrations dans les systèmes rotatifs par utilisation d'organes mobiles avec le système lui-même utilisant des organes élastiques ou des organes amortisseurs de friction, p. ex. entre un arbre en rotation et une masse giratoire montée dessus utilisant des ressorts comme organes élastiques, p. ex. des ressorts métalliques des ressorts en matière plastique, p. ex. en caoutchouc
• F16F 1/32 - Ressorts en forme de coupellesRessorts en forme de disques légèrement concaves
• F16F 15/121 - Suppression des vibrations dans les systèmes rotatifs par utilisation d'organes mobiles avec le système lui-même utilisant des organes élastiques ou des organes amortisseurs de friction, p. ex. entre un arbre en rotation et une masse giratoire montée dessus utilisant des ressorts comme organes élastiques, p. ex. des ressorts métalliques
• F16D 27/00 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques
• F02B 67/06 - Moteurs caractérisés par l'agencement d'appareils auxiliaires non prévu ailleurs, p. ex. un appareil ayant des fonctions différentesEntraînement non prévu ailleurs de ces appareils auxiliaires par les moteurs à entraînement mécanique des appareils auxiliaires entraînés par chaînes, courroies ou autres organes sans fin

Abrégé

A friction clutch (1) equipped with an input member (2), a friction clutch mechanism (7), a first rotating body (21), a back torque limiter mechanism (25), and a second rotating body (23). The friction clutch mechanism (7) has multiple friction plates (8, 11) and a pressure plate (12) that presses these friction plates (8, 11). The back torque limiter mechanism (25) has a cam groove (44) on the first rotating body (21) side, a cam groove (45) on the second rotating body (23) side, and a ball (41) between these cam grooves (44, 45). The cam grooves (44, 45) have a hemispherical mating section (47, 51) and an inclined cam section (48, 52). Due to the movement of the ball (41) from the mating section (47, 51) to the inclined cam section (48, 52) an end portion (61) of the first rotating body (21) pushes the pressure plate (12) in the opposite direction from the friction plates (8, 11).

Classes IPC  ?

• F16D 13/52 - Embrayages à lamelles multiples
• F16D 43/206 - Embrayages automatiques à commande interne actionnés entièrement mécaniquement commandés par le couple, p. ex. embrayages à déclenchement en cas de surcharge, embrayages à glissement avec dispositifs par lesquels le couple fait varier la pression d'embrayage du type à rochet avec des billes ou des rouleaux intermédiaires se déplaçant axialement entre l'engagement et le désengagement

Abrégé

An electromagnetic clutch includes a field core including a coil storage groove, and a rotor including a core storage groove. The coil storage groove is formed by an inner cylindrical portion, an outer cylindrical portion, and a bottom portion. The bottom portion of the field core wholly projects to the outside of the core storage groove. The outer peripheral surface of the inner cylindrical portion and the inner peripheral surface of the outer cylindrical portion include a first transition surface and a second transition surface, respectively, on the bottom portion side. Each of the first transition surface and the second transition surface includes a tilting surface that gradually narrows the groove width of the coil storage groove along with an increase in a distance from the side of the opening of the coil storage groove.

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 13/76 - Embrayages à friction spécialement adaptés pour leur incorporation dans d'autres pièces de transmission, c.-à-d. une des pièces au moins de l'embrayage ayant également une autre fonction, p. ex. étant le disque d'une poulie
• F16D 27/00 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques

Abrégé

A yoke includes an annular groove in which an exciting coil is stored, and a first through hole formed in the bottom of the annular groove. A terminal housing includes a boss portion fitted in the first through hole and a connecting concave portion located on the opposite side of the annular groove with respect to the boss portion. The boss portion includes a second through hole extending in a direction parallel to the center line of the first through hole. An external connecting terminal is buried in the terminal housing. The external includes a coil extraction hole continuing to the second through hole. The extraction end of the exciting coil is soldered to the terminal in a state in which the extraction end is passed through the second through hole and the coil extraction hole.

Classes IPC  ?

• H01F 5/04 - Dispositions des connexions électriques aux bobines, p. ex. fils de connexion
• H01F 5/02 - Bobines d'induction enroulées sur des supports non magnétiques, p. ex. mandrins
• F16D 67/06 - Combinaisons embrayage-frein électromagnétiques
• H01F 3/00 - Noyaux, culasses ou induits
• H01F 38/00 - Adaptations de transformateurs ou d'inductances à des applications ou des fonctions spécifiques

Abrégé

Provided are: a method whereby an insert metal spur gear at a temperature equal to or less than a mold temperature is inserted into a mold without preheating of the insert metal gear to a predetermined temperature, and the metal spur gear is then rapidly heated; a technical means for dramatically increasing yield of a hybrid gear by a method for automating an insert molding process; and a hybrid spur gear having strength, wear resistance, and durability exceeding the application limits of the same type of spur gear made from a resin. [Solution] An insert molding method characterized by comprising inserting and loading an insert metal spur gear in a predetermined position in a mold set to a predetermined temperature, the insert metal spur gear being at a temperature lower than the mold temperature, then heating the surface of the insert metal spur gear through use of a rapid heating mechanism and stopping the heating at the time that the surface temperature of the insert metal spur gear reaches a predetermined temperature in the range from the mold temperature to a molten resin temperature, injection molding or extrusion molding a molten resin in the mold at the same time the heating is stopped, and coating the surface of the insert metal spur gear with the resin to mold a hybrid spur gear.

Classes IPC  ?

• B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
• B29C 45/26 - Moules
• B29C 47/02 - en incorporant des parties ou des couches préformées, p.ex. moulage par extrusion autour d'inserts ou sur des objets à recouvrir
• B29L 9/00 - Produits stratifiés
• B29L 15/00 - Roues d'engrenages ou objets similaires comportant des creux ou des saillies, p. ex. boutons de réglage

Abrégé

A seal structure for an electromagnet lead wire includes an annular yoke including an annular groove, a wiring hole configured to pass a lead wire of an exciting coil, an insulating resin configured to seal the exciting coil, and a seal member arranged in the hole. The wiring hole includes a though hole of a case, and a concave portion of the yoke. The insulating resin includes a projecting portion whose distal end face is located in the concave portion. The seal member includes a columnar portion inserted into the though hole, and a flange portion located in the concave portion. The flange portion is sandwiched and compressed between the device inner surface of the case and the distal end face of the insulating resin.

Classes IPC  ?

• H01F 7/00 - Aimants
• H01F 7/20 - Électro-aimantsActionneurs comportant des électro-aimants sans armature
• F16D 27/00 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques

Abrégé

An electromagnetic connection device includes an armature (4), a rotor (3), an electromagnetic coil (14), and a spring member (24) that biases the armature (4) in a direction in which the armature (4) is separated from the rotor (3). The electromagnetic connection device includes a damping member (25) mounted on the armature (4) so as to face the rotor (3). The armature (4) includes a flat portion (22) and a tubular portion (8). The damping member (25) includes a damper cover (26) including an abutment portion along the flat portion (22) and an engaging portion along the tubular portion (8), and an elastic member (27) sandwiched between the abutment portion and the flat portion (22). The damper cover (26) is put on the armature (4) from the side of the rotor (3) and movably held on the tubular portion (8). The flat portion (22) includes a concave portion (35) configured to store the abutment portion of the damper cover (26). There is provided an electromagnetic connection device capable of obtaining a high damping effect and raising the productivity while preventing the elastic member from being exposed to a friction surface.

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 27/14 - Éléments constitutifs
• F16D 13/40 - Embrayages à friction avec organes d'embrayage mobiles selon l'axe à surfaces d'embrayage plates, p. ex. des disques dans lesquels l'organe ou chacun des organes mobile selon l'axe est pressé exclusivement contre un organe situé dans l'axe

Abrégé

An electromagnetic clutch includes an armature to be attracted to a rotor, an armature hub formed on one end portion of a rotating shaft, and a leaf spring which connects the armature to the armature hub and biases the armature away from the rotor. The leaf spring includes a base fixed to the armature hub, a stopper connected to the base, and a connecting piece surrounding the stopper by projecting outside from the base, and fixed to the armature. A through hole into which a rivet for fixing the base to the armature hub is inserted is formed in the base. A low-strength portion having strength lower than that in the periphery of the through hole is formed in a boundary portion between the base and a connecting portion.

Classes IPC  ?

• F16D 27/02 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques à électro-aimants incorporés dans l'embrayage, c.-à-d. avec des bagues collectrices
• F16D 27/14 - Éléments constitutifs
• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 27/00 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques

Abrégé

An electromagnetic clutch includes a rotation transmission member supported by an input shaft portion via a bearing. The rotation transmission member includes a movement regulating portion having abutment portions that abut against the bearing. The clutch further includes first and second spring members that bias an armature toward a braking member, and a connecting member overlaid on the movement regulating portion. The connecting member has first holes at portions facing the abutment portions, and second holes at portions facing regions between the abutment portions. One-end portions of the first and second spring members are attached to the armature. First fixing members inserted into the first holes fix the other-end portions of the first spring members to the connecting member. Second fixing members inserted into the second holes fix the other-end portions of the second spring members to the connecting member and fix the connecting member to the movement regulating portion.

Classes IPC  ?

• F16D 67/06 - Combinaisons embrayage-frein électromagnétiques
• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 27/14 - Éléments constitutifs
• F16D 27/00 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques

Abrégé

In the present invention, the following are provided: a pulley (6) which serves as a rotating member; an elastic member which serves as a power transmission member; a fixing screw which passes through the pulley and elastic member; and a nut that, together with the fixing screw, sandwiches the pulley (6) and elastic member. Provided is a nut holder (25) which is attached to the pulley (6) via a locking mechanism. The locking mechanism includes: through-holes (14) of the pulley (6); hooks (13) of the nut holder (25) which can be inserted into the through holes (14); and elastic pieces (33) which are positioned near the hooks (13). In a state where the hooks (13) have been inserted into the through holes (14), the nut holder (25) is rotated with respect to the pulley (6) in one direction of rotation, and as a result thereof, a locking piece (36) of a hook (13) comes into contact with the pulley (6), and claw parts (43) of the elastic pieces (33) engage with the opening edge-section of the through holes (14). A power transmission device can be provided in which, while using a configuration that enables a nut holder to be easily attached, there is no possibility of the nut holder falling off due to the pressing force of the fixing screw pressing against the nut.

Classes IPC  ?

• F16H 55/36 - Poulies

Abrégé

This invention includes an annular hysteresis brake (34) having one end fixed to a stationary frame (11), a support shaft (6) extending through a hollow portion of the hysteresis brake (34), and a spindle part (4) rotatably supported by the support shaft (6). The hysteresis brake (34) includes a yoke (36), a cylindrical hysteresis member (46) inserted into an annular space (41) of the yoke (36), and a hub (37) for rotatably supporting the hysteresis member (46). The spindle part (4) is supported by the support shaft (6) such that the spindle part (4) is restricted from moving toward the hysteresis brake (34) by a sleeve (15). The spindle part (4) and hub (37) are coupled with each other so as to rotate together via pins (21). This invention can simplify the structure while preventing damage to the hysteresis brake, thereby reducing the manufacturing cost of a thread-supplying spindle unit.

Classes IPC  ?

• B65H 59/04 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la délivrance du matériau à partir du paquet d'approvisionnement par dispositifs agissant sur le paquet ou le support
• B65H 59/38 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la vitesse du mécanisme d'entraînement des dispositifs de déroulage, de dévidage, d'avance, d'enroulement ou d'emmagasinage, p. ex. en réaction automatique aux variations de tension
• H02K 49/04 - Embrayages dynamo-électriquesFreins dynamo-électriques du type à induction asynchrone du type à courants de Foucault ou à hystérésis
• H02K 7/08 - Association structurelle avec des paliers
• D03D 49/16 - Chaîne alimentée par râtelier

Produits et services

Clutches for industrial machines; brakes for industrial machines; electromagnetic clutches for industrial machines; electromagnetic brakes for industrial machinery; torque limiters for machines; clutches for lawn mowers; brakes for lawn mowers; electromagnetic brakes for elevator hoisting machines; superchargers for machine engines; power operated roots-type blowers for machines Electronic tension controllers for machines in the textile industry clutches for land vehicles

Produits et services

Clutches for industrial machines; brakes for industrial machines; electromagnetic clutches for industrial machines; electromagnetic brakes for industrial machinery; torque limiters for machines; clutches for lawn mowers; brakes for lawn mowers; electromagnetic brakes for elevator hoisting machines; superchargers for machine engines; power operated roots-type blowers for machines Electronic tension controllers for machines in the textile industry clutches for land vehicles

Abrégé

Provided is an electromagnetic connection device with which exposure of the elastic member to the friction surface is prevented while high damping effects are obtained and for which productivity is increased. The electromagnetic connection device is equipped with an armature (4), a rotor (3), an electromagnetic coil (14), and a spring member (24) for biasing the armature (4) away from the rotor (3). The armature (4) is provided with a damping member (25) that is attached so as to face the rotor (3). The armature (4) has a flat section (22) and a cylindrical section (8). The damping member (25) is provided with: a damper cover (26) with a contact section that lies along the flat section (22) and an engaging section that lies along the cylindrical section (8); and an elastic member (27) that is interposed between the contact section and the flat section (22). The damper cover (26) is capped on the armature (4) from the rotor (3)-side and is held on the cylindrical section (8) so as to allow movement. The flat section (22) has a recessed area (35) for accommodating the contact section of the damper cover (26).

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques

Abrégé

This power transmission device is provided with a rotatably supported pulley (6), an elastic member (21) that overlaps the pulley from one side in the axial direction of a rotating shaft, a securing screw (11) that passes through the pulley and the elastic member in the axial direction, a nut (24) that, in collaboration with the securing screw, grips the pulley and the elastic member, a ring-shaped nut holder (25) that retains the nut, and a latching mechanism (27) that attaches the nut holder to the pulley. The latching mechanism comprises a plurality of hook through-holes (14) that pass through the pulley in the axial direction and a plurality of hooks (13) that project from positions on the nut holder corresponding to the hook through-holes. The hook through-holes and the hooks are disposed at intervals from one another in the direction of rotation of the pulley. The hooks include a latching piece (36) that, in a state in which the hooks have been inserted into the hook through-holes, is brought into contact with the pulley from the opposite side from the nut holder due to the changing of the position of the nut holder in the direction of rotation with respect to the pulley.

Classes IPC  ?

• F16H 55/36 - Poulies
• F16B 41/00 - Dispositions contre la perte des boulons, écrous, broches ou goupillesDispositions empêchant toute action non autorisée sur les boulons, écrous, broches ou goupilles

Abrégé

An electromagnetic clutch includes a first rotation transmission portion, annular field core, rotation stop member, second rotation transmission portion, armature, and spring member. The annular field core is supported by the first rotation transmission portion via a first bearing. The first bearing is housed in a hollow portion of the field core and fitted on an inner circumferential surface of the field core. The rotation stop member includes a flat portion which is fixed to an end of the field core on a side opposite to the armature. The flat portion is formed integrally with a retaining piece which projects toward the hollow portion of the field core and faces the first bearing when viewed from the axial direction of the field core.

Classes IPC  ?

• B60W 10/02 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande d'accouplements de la chaîne cinématique
• B60W 10/18 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des systèmes de freinage
• F16D 67/06 - Combinaisons embrayage-frein électromagnétiques
• F16D 27/04 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques à électro-aimants incorporés dans l'embrayage, c.-à-d. avec des bagues collectrices avec surfaces de friction mobiles axialement

Abrégé

The present invention is provided with an annular hysteresis brake (34) having one end fixed to a stationary frame (11), a support shaft (6) penetrating through a hollow part of the hysteresis brake (34), and a spindle part (4) rotatably supported by the support shaft (6). The hysteresis brake (34) includes a yoke (36), a cylindrical hysteresis member (46) inserted into an annular space (41) in the yoke (36), and a hub (37) for rotatably supporting the hysteresis member (46). The spindle part (4) is supported by the support shaft (6) while being restricted from moving toward the hysteresis brake (34) by a sleeve (15). The spindle part (4) and the hub (37) are coupled with each other so as to integrally rotate via a pin (21). According to the present invention, it is possible to simplify a structure while preventing the hysteresis brake from being broken, and to reduce the manufacturing cost of a thread-supplying spindle unit.

Classes IPC  ?

• D03D 49/16 - Chaîne alimentée par râtelier
• B65H 59/04 - Réglage ou commande de la tension du matériau filiforme, p. ex. pour empêcher les vrillesUtilisation d'indicateurs de tension par régulation de la délivrance du matériau à partir du paquet d'approvisionnement par dispositifs agissant sur le paquet ou le support
• H02K 49/06 - Embrayages dynamo-électriquesFreins dynamo-électriques du type synchrone

Abrégé

An electromagnetic clutch device includes an armature, a rotor, an electromagnet, and a silencing member. The armature is supported by a driving member so that the armature is movable in the axial direction and rotate integrally with the driving member. The rotor is arranged coaxially with the armature, rotate with respect to the armature and rotate integrally with an output member. The electromagnet presses the armature and the rotor against each other based on an electromagnetic attraction force generated when current is supplied through the electromagnet to be coupled with each other in the torque transmittable manner. The silencing member is provided on an outer circumferential portion of the armature to attenuate noise generated by the vibration of the armature in a state where the silencing member is out of contact with any member other than the armature.

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques

Abrégé

Provided are a pulley (4) connected to a motive power source, and a rotating shaft positioned coaxially with respect to the pulley (4). Also provided are a hub (11) provided to the rotating shaft, and a ring plate (12) separably mated to the hub (11). Also provided is a leaf spring (16) for urging the ring plate (12) toward the hub (11) in the direction parallel to the axis of rotation. When the load on the rotating shaft is below a threshold, the hub (11) and ring plate (12) are caused to rotate as a single entity due to friction. When the load on the rotating shaft is equal to or higher than a threshold, the ring plate (12) rotates in relative fashion with respect to the hub (11) and moves parallel to the axis of rotation due to the spring force of the leaf spring (16), so that the ring plate (12) and the hub (11) separate. It is possible to provide a power transmission device in which power transmission is quickly interrupted after the load torque on a driven-side rotating element has increased.

Classes IPC  ?

• F16D 9/00 - Accouplements avec organe de sécurité pour le désaccouplement
• F16D 7/02 - Accouplements à glissement, p. ex. glissant en cas de surcharge, pour absorber les chocs du type à friction

Abrégé

The power transmission device is equipped with a pulley (4) and a hub (11), which are disposed on the same rotation axis line, and connecting members (13) for connecting said rotating bodies. The device is equipped with first connection structures (14) for inseparably connecting one end (13a) of the connecting members to the pulley, and with second connection structures (15) for separably connecting the other end (13b) of the connecting members to the hub. The second connection structure is equipped with: a cylinder (21) that passes through the other end (13b) of the connecting member (13) in the axial direction; a head section (28) provided on the cylinder (21); a slit (22) in the connecting member (13); and a coned disc spring (29) for pressing the connecting member (13) on the rotating body. The other end (13b) of the connecting member (13) is formed to be larger than other regions of the connecting member (13) when viewed from the axial direction. In the region of said other end (13b) that is oriented towards the shaft center of the hub (11), a depression (16) that is concave toward the outer circumference of the hub (11) is formed. Provided is a power transmission device for which the operating load of the torque limiter, which blocks power transmission, can be set with high precision.

Classes IPC  ?

• F16D 9/00 - Accouplements avec organe de sécurité pour le désaccouplement
• F16D 7/02 - Accouplements à glissement, p. ex. glissant en cas de surcharge, pour absorber les chocs du type à friction

Abrégé

An electromagnetic coupling device includes a field core, a surge voltage absorbing member, and a storage member. The field core is provided inside an exciting coil. The surge voltage absorbing member is connected to the exciting coil. The storage member is made of an insulating material and includes a recess portion to store the surge voltage absorbing member. A through hole is formed in an outer wall of the field core. The storage member is inserted into the through hole with an opening of the recess portion facing the exciting coil. The surge voltage absorbing member is inserted in the recess portion so as to be positioned outside the field core by the exciting coil.

Classes IPC  ?

• H01F 27/29 - BornesAménagements de prises
• H01F 5/00 - Bobines d'induction

Abrégé

b prevents abrasion powder produced on actuation of the electromagnetic clutch mechanism 14 from being scattered.

Classes IPC  ?

• F16D 27/112 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe avec des surfaces de friction plates, p. ex. des disques
• F16D 27/14 - Éléments constitutifs
• G01B 7/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des axes

Abrégé

Brushes (20, 21), which slide on slip rings (23, 24) having power feeding terminals (51, 53) to be electrically connected with a power feed side, are provided with extensions (32, 36) extending in the radial direction of a feed core (3).  The extensions (32, 36) are so formed as to be bent in a direction away from a coil bobbin (12), and third bent portions (32c, 36c) positioned at the ends are electrically connected with terminal portions (10d, 10d) of coil terminals.  A mounting recess (3a) housing a power feeding unit (5) of the feed core (3) has an outer diameter (R1) made smaller than the inner diameter (R2) of the coil bobbin (12).  As a result, the mounting recess (3a) can be so positioned in the feed core (3) as to be separated in the direction shown by an arrow (A) from a coil-wound portion (14) of the coil bobbin (12) by a distance (H), whereby the size of a coil rotation type electromagnetic clutch (1) can be reduced in the directions shown by arrows (A-B).

Classes IPC  ?

• F16D 27/02 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques à électro-aimants incorporés dans l'embrayage, c.-à-d. avec des bagues collectrices

Abrégé

An electromagnetic clutch includes a rotor, armature hub, armature, magnetic body and first permanent magnet, field core, excitation coil, and second permanent magnet. The rotor is rotatably disposed in the housing of a driven device. The armature hub is fixed to the rotating shaft of the driven device, the armature movable in an axial direction. The magnetic body is incorporated in the rotor. The first permanent magnet connects the armature to the rotor. The field core is attached to the housing and inserted in the rotor to be in noncontact with it. The excitation coil is disposed in the field core and excited, when cutting off power transmission, to cancel a magnetic force of the first permanent magnet, thus releasing the armature from the first permanent magnet. The second permanent magnet separates the armature from the rotor, when cutting off power transmission, to move the armature toward the armature hub.

Classes IPC  ?

• F16D 27/01 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques à aimants permanents
• F16D 27/105 - Embrayages actionnés magnétiquementLeur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c.-à-d. sans bagues collectrices avec une bande hélicoïdale ou un organe équivalent coopérant avec une surface cylindrique d'accouplement
• F16D 43/25 - Embrayages automatiques à commande interne actionnés entièrement mécaniquement commandés par éléments sensibles à la chaleur

Produits et services

clutches for land vehicles

Produits et services

Clutches for land vehicles.

Produits et services

CLUTCHES ESPECIALLY FOR USE IN CONNECTION WITH AIR CONDITIONING, MACHINE TOOLS AND BUSINESS MACHINES

Produits et services

CLUTCHES AND BRAKES FOR INDUSTRIAL MACHINERY