Abrégé

The present invention provides a self-locking drill chuck, which the front end of its nut is provided with a number of keys, and the spring piece of the self-locking mechanism is assembled on the nut by being elastically limited between the keys of the nut. The second end of the spring piece passes into the gap between the keys and the drill body through a pair of keys among the keys, and is elastically attached to the key by its elasticity. The connecting protrusion of the spring piece is arranged on the portion of the spring piece between the pair of keys, and the lock end is located in the gap between the key corresponding to the lock end and the drill body. The present invention can not only prevent the self-locking state from exiting due to the inertia effect, but also has the advantages of convenient assembly and can further improve the self-locking performance.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

The invention provides a strength-boosting drill chuck comprising a drill body, a nut and a clamping claw, which the nut and the clamping jaw forms a threaded connection, and the drill body is provided with an inclined clamping claw hole for the clamping claw to slide forward and backward along the clamping claw hole; wherein the drill chuck is provided with a strength-boosting structure of the connecting force of the nut clamping claw, which is provided with a liquid plastic component, and the structure for exerting force and transmitting force to the liquid plastic component, which enables the force on the liquid plastic component to be transmitted to the nut. The invention can use the liquid plastic component to transmit force, greatly enhance the binding force between the nut and the clamping claw, and increase the force to resist the reverse force and the inertia force. Whether it is a hand tight drill chuck or a drill chuck with self-locking function, it can cope with the adverse effects caused by various reasons on the drill chuck to hold the drill bit and keep the locking state, and significantly improve the properties of the drill chuck, and prevent loosening during drilling.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A hand-tight drill chuck with a lock and self-locking structure including an elastic piece with an arcuate portion, arranged on a ring member threadedly connected to a clamping claw. The two ends of the arcuate portion are restricted. The elastic piece has a locking portion and groove or protrusion that cooperate with teeth between two ends of the arcuate portion. The drill chuck has a rotation sleeve with control structure. The control structure includes a metal member with elastic portion having a protrusion or groove that cooperate with the groove or protrusion. When the groove or protrusion of the elastic piece withstands against and is engaged with the protrusion or groove of the metal member via elasticity, the drill chuck is in a self-locking state. This ensures a locking torque and unlocking torque by elastic match between an elastic force which is not slack.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A hand drill chuck, comprising a drill body (1), a nut (2) and a clamping jaw (3); the clamping jaw is provided with an external thread and is connected to the thread of the nut, while a middle portion of the drill body is provided with a supporting step (11), a washer (4) being placed on the supporting step; the washer is a washer that supports the nut, and the washer is fixedly connected to the drill body such that the same cannot rotate relative to one another, while a front side of the nut is limited by means of components other than the drill body; the hand drill chuck is provided with an inclined clamping jaw hole (6), the clamping jaw hole being formed on the combined integral body of the washer and the drill body; the washer is further provided with part of a contour wall of the clamping jaw hole at a portion through which the clamping jaw passes (40), and composes a clamping jaw hole contour at said position with part of a clamping jaw hole wall (60) of the drill body at an inner side thereof. The hand drill chuck has a simple structure, and the clamping jaw hole is provided by means of the washer and the drill body serving as a whole, while production is simple and accurate; the present invention may facilitate the diameter of the drill body being reduced, reduce the weight and costs of the drill chuck, and reduce centrifugal force when the drill chuck is operated such that the drill chuck has greater operational accuracy and is easier to operate.

Classes IPC  ?

• B23B 51/12 - Adaptateurs pour forets ou mandrinsDouilles de réduction coniques

Abrégé

A self-locking drill chuck includes rotating sleeve provided with a convex leaf spring fixed on a rotating sleeve on both ends, its nut or the ring fixedly connected with the nut provided with a first groove and a second groove matching with the convex portion of the convex leaf spring, and the self-locking structure including a ring tooth on the drill body and a rotatable locking block disposed on the nut or ring fixedly connected to the nut. The nut or ring fixedly connected to the nut is also provided with a leaf spring, and the rotating sleeve is provided with a first part compressing the leaf spring and a second part compressing the locking block. The self-locking drill chuck can achieve positioning fit of metals, and self-locking and unlocking switching is realized by the lever without the interference phenomenon in the self-locking structure.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

The present invention provide a self-locking drill chuck, its rotating sleeve is provided with a convex leaf spring fixed to a rotating sleeve at both ends, its nut or ring fixedly connected with the nut are provided with a first groove and a second groove matching with the convex portion of the leaf spring; the self-locking structure includes a ring tooth on the drill body and rotatable locking block arranged on the nut or ring fixedly connected to the nut, the nut or ring fixedly connected to the nut is provided with a leaf spring, the rotating sleeve is provided with a first part compressing the leaf spring and a second part compressing the locking block. This invention can achieve positioning matching between metals, which has a stronger holding force for maintaining self-locking state of the drill chuck, greatly enhancing the operating feel.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A self-locking drill chuck is disclosed herein. Among the rotating sleeve, the spring leaf and the nut, the nut is rotated by the rotating sleeve without being driven by the spring leaf, the spring leaf is loaded on the nut to rotate with the nut synchronously, under normal state, the locking end of the spring leaf is in a closed state against the teeth, and the self-locking drill chuck is also provided with a state switching part which is connected with the rotating sleeve and rotates with the rotating sleeve synchronously; the spring leaf is provided with a state switching matching structure. The nut is directly driven by a rotating sleeve without the spring leaf during the rotating process in the clamping direction or the releasing direction, which can enhance the hand feeling and efficiency in the clamping operation; the spring leaf has self-locking functions which can be in normally closed and the elastic force is opposite to the centrifugal force, greatly enhancing the reliability of the drill chuck self-locking structure.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A drill chuck for preventing over-position operation. A drill body (1) of the drill chuck is provided with an elastic switch part (7). The elastic switch part (7) is matched with a stepped surface (41) in front of the thread of a clamping jaw (4). When the clamping jaw (4) retreats to approach the limit, the elastic switch part (7) is pressed under the action of the stepped surface (41) and is automatically upwarped and reset during releasing. The front end of a nut (3) is provided with a protrusion (31) matched with the elastic switch part (7). The protrusion (31) can be in contact with the pressed elastic switch part (7) during the rotating process of the nut (3) to form stop matching. By means of the drill chuck, the self movement of the clamping jaw can be used for switch operation. When the clamping jaw retreats to the bottom, the elastic switch part is pressed and is matched with the protrusion on the nut to limit further rotation of the nut, thereby preventing over-position operation and protecting the drill chuck. Moreover, the drill chuck has a simple structure, and is rather convenient to manufacture and assemble.

Classes IPC  ?

• B23B 51/12 - Adaptateurs pour forets ou mandrinsDouilles de réduction coniques
• B23B 31/165 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement déplaçables radialement actionnés par des mécanismes à vis-écrou

Abrégé

A self-locking inner cone drill chuck is provided with a connection body (1) matched with and connected to a drive machine. A connection hole (11) for connecting to the drive machine is arranged at a rear part of the connection body (1). A front end of the connection body (1) is a conical head and an external thread (16) is arranged on the conical head. The drill chuck is also provided with a drill body (2) that can rotate relatively to the connection body (1). The drill body (2) is sleeved on the connection body (1). Clamping jaw holes (23) distributed around an axis of the connection hole are arranged in the drill body (2). Clamping jaws (4) of the drill chunk pass through the clamping jaw holes (23) and are connected to the external thread (16) in a threaded way. A thread to which the thread connects is a left-handed thread. The drill chuck is provided with a rotary sleeve (3) coaxial with the connection body (1). The rotary sleeve (3) is located outside the drill body (1). A self-locking structure is arranged between the rotary sleeve (3) and the connection body (1). The self-locking structure comprises a ratchet (15), a leaf spring (6) and a cam arranged on the rotary sleeve (3) for controlling the spring to work. The leaf spring (6) is provided with a locking end (62) and a protrusion (61) matched with the cam. The ratchet (15) matches with the connection body (1) and moves synchronously with it. The leaf spring (6) matches with the drill body (2) and moves synchronously with it. A transposition groove (25) is arranged on the drill body (2). A key (31) matched with the transposition groove (25) is arranged on the rotary sleeve (3) to enable the rotary sleeve (3) to drive the drill body (2) to rotate in positive and negative directions. A length of the transposition groove (25) enables the rotary sleeve (3) and the key (31) to rotate by an angle relatively to the drill body (2), so that the locking end (62) of the leaf spring (6) switches between a state of being inserted into the ratchet (15) and a state of being retracted from the ratchet (15).

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement
• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe

Abrégé

An antilock inner cone drill chuck provided with a connector body (1) matingly connected to a driving machine. The rear end of the connector body (1) is provided with a connecting hole (11) for use in connecting to the driving machine. The front end of the connector body (1) is a conical head and is provided with an external thread (16) on the conical head. The drill chuck is also provided with a drill body (2) that is capable of rotating relative to the connector body (1). The drill body (2) is sleeved over the connector body (1). The drill body (2) is provided therein with a jaw hole (23) provided around the axis of the connecting hole (11). A jaw (4) of the drill chuck passes through the jaw hole (23) and is threadedly connected to the external thread (16), where the thread of the thread connection is a left-handed thread. The connector body (1) is provided at the front end thereof towards the rear with a front hole section (12) that is coaxial with the connecting hole (11). The front hole section (12) penetrates or runs through the section of the connecting body where the external thread (16) is. The connector body (1) is provided from the front end thereof rearwards with a groove (13) running through the hole wall of the front hole section (12). The depth of the groove (13) reaches the middle of the external thread (16) or runs rearwards through the external thread (16). When the force of the drill chuck clamping a drill increases, a slight distending deformation is created on the hole wall of the region where the external thread (16) of the connector body (1) is by the groove (13) of the front hole section (12) of the connector body. This reduces contact surface, and reduces friction, thus allowing for antilock, and for facilitating the drill chuck in releasing the drill.

Classes IPC  ?

• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe
• B23B 31/107 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par des éléments d'arrêt agissant latéralement, p. ex. doigts, écrous, clavettesCaractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par éléments mobiles, p. ex. des billes
• B23B 31/165 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement déplaçables radialement actionnés par des mécanismes à vis-écrou

Abrégé

An antilock self-tightening drill chuck comprising a connector body (1) matingly connected to a driving machine, a jaw-guiding frame (6) that is coaxial with the connector body (1) and is capable of rotating relatively to the connector body, a jaw (8), and a threaded rod (7) connected to a thread of a threaded hole (12) in the connector body. The jaw (8) is slidably connected to a guiding groove (61) on the jaw-guiding frame (6). The jaw (8) is also slidably connected to a guiding mount groove (72) at the front portion of the threaded rod (7). An external thread on the threaded rod (7) is a left-handed thread. The threaded rod (7) is provided at the rear end thereof with a hole (73) extending forward, thus the threaded rod (7) where the hole (73) is provided is cylindrical in shape. The tubular threaded rod (7) is provided on a tube wall thereof with multiple grooves (71) running through the tube wall and extending forward from the rear end of the threaded rod. When the force of the self-tightening drill chuck clamping a drill and the force of an internal thread of the connector body (1) matching the external thread of the threaded rod (7) increase, a slight deformation is generated at a portion of the threaded rod where the grooves (71) are, allowing the threaded rod to change from the original cylindrical shape to a rearwardly tapered cone, this reduces contact surface and reduces friction, thus allowing for antilock, and for facilitating an operation in which the self-tightening drill chick releases the drill.

Classes IPC  ?

• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe
• B23B 31/107 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par des éléments d'arrêt agissant latéralement, p. ex. doigts, écrous, clavettesCaractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par éléments mobiles, p. ex. des billes
• B23B 31/165 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement déplaçables radialement actionnés par des mécanismes à vis-écrou

Abrégé

A quickly assembled and disassembled drill chunk comprises a drill body (1). A motor shaft hole (11) is extended from a rear end of the drill body to the interior of the drill body. A rear part of the drill body is further provided with a limit hole (13). A movable limit component (8) for a motor shaft (3) is disposed in the limit hole. The drill chunk is further provided with a device for controlling the limit component to be limit-fit with the motor shaft and to be released from a limit fitting state. A torsion transfer column that can be connected to the motor shaft is disposed in the motor shaft hole along an axial direction of the motor shaft hole. An upper end of the torsion transfer column is located below the limit hole. The drill chunk has a simple structure, provides reliable connection, and can be fast connected to and disassembled from the machine tool or gun drill with a fitting motor shaft. Moreover, the drill chunk can transfer the torsion reliably, so the cutting strength of the drill chunk is improved.

Classes IPC  ?

• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe

Abrégé

A quick assembled and unassembled joint comprises a body (1), wherein the back end of the body (1) is provided with a shaft hole (14) in which a power output shaft (3) is inserted and a limit hole (15) which is perpendicular to the shaft hole (14). The limit hole (15) is provided with a limit part (41) which is movable relative to the power output shaft (3). The joint is further provided with a device which controls the limit part (41) to connect with or separate from the power output shaft (3). A torque force transferring pole (16) connected with the power output shaft (3) is arranged along the axis of the shaft hole (14). The joint can be quick connected with or disassembled from a machine tool or an electric drill which is provided with the power output shaft, and it also can transfer torque force stably and reliably.

Classes IPC  ?

• F16D 1/10 - Accouplements à action rapide dans lesquels les pièces sont simplement présentées dans l'axe
• F16D 41/064 - Roues libres ou embrayages à roue libre avec organes d'accouplement intermédiaires d'arrêt entre une surface intérieure et une surface extérieure les organes intermédiaires d'arrêt agissant en roulant et ayant une section transversale circulaire, p. ex. billes
• B23B 51/12 - Adaptateurs pour forets ou mandrinsDouilles de réduction coniques
• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe

Abrégé

A drill chuck which has a drill body (1) is disclosed. A motor shaft hole (11) extends axially from the back end of the drill body (1) into the same. The back part of the drill body (1) is further provided with a limiting hole normal to the motor shaft hole (11), and a movable limiting member (8) for a motor shaft (4) is provided in the limiting hole. The drill chuck is further provided with a device to operate the limiting member (8) into or out of a limiting fit state with the motor shaft (4). A torque transferring column (12) which can be connected with the motor shaft (4) is provided axially in the motor shaft hole (11). The upper end of the torque transferring column (12) is arranged under the limiting hole. The drill chuck of the invention can be quickly attached to and detached from a machine tool or a pistol drill with an assorted motor shaft, and the torque transferring structure is more reliable so that the cutting strength of the drill chuck is increased.

Classes IPC  ?

• B23B 31/107 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par des éléments d'arrêt agissant latéralement, p. ex. doigts, écrous, clavettesCaractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par éléments mobiles, p. ex. des billes
• B23B 47/06 - EntraînementsTransmissions pour faire tourner la broche de travail principalement par des moyens électriques
• B23B 45/02 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet entraînées électriquement

Abrégé

A self - lock manual tightening drill chuck includes a chuck body(1), a plurality of jaws(4), a nut(3), a front sleeve(2) and a rear sleeve(9).The jaws (4) mesh with the nut (3) via threads. The rear sleeve (9) can rotate relative to the chuck body (1) and surround the chuck body (1). Behind the nut (3), a sleeve teeth (21) is provided inner the front sleeve (2).A sleeve part (7) is provided surround the chuck body (1),and can not rotate relative to the chuck body (1). An inner sleeve (8) is disposed on the rear sleeve (9) or is connected with the rear sleeve (9). The inner sleeve (8) can rotate together with the rear sleeve (9).The sleeve part (7) and the inner sleeve (8) has parts for locking the chuck. The chuck is locked by manual control the rear sleeve (9). The self -lock manually tightened chuck can prevent the drill from loosening when it is in work and can be used under being frequently subjected to impact loads.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement
• B23B 51/04 - Outils pour machines à percer pour trépaner
• B23B 51/12 - Adaptateurs pour forets ou mandrinsDouilles de réduction coniques

Abrégé

A new self-locking hand tightened drill chuck is disclosed. It has a chuck body(1),a jaw(4), a rotary sleeve(2) axially fixed, nut(3), rear sleeve(6) formed behind the rotary sleeve(2). The jaw(4) is screwed with the nut(3), a groove(21) is located within the back end of said rotary sleeve(2), said drill chuck provides a ring-shaped element(5) at the back of the chuck body(1), said ring-shaped element(5) provides spring leaf(51) which has self-locking part (53) fitted with said groove(21), the rear sleeve(6) has control frame (61) and control frame(62), which respectively control the spring leaf(51) locking or unlocking with groove (21),saidfront surface of the chuck body(1) fitted with fixedly centric gear,said drill chuck provides several planetary gears (7) which engage with the centric gear(ll) between rotary sleeve(2) and chuck body(1), said inner surface of the exterior sleeve provides teeth which engage with planetary gears (7).

Classes IPC  ?

• B23B 31/169 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement déplaçables radialement actionnés par des roues dentées

Abrégé

A new self-locking hand tightened drill chuck is disclosed. It has chuck body(1),jaw(4), rotary sleeve(2) axially fixed, nut(3), rear sleeve(7) formed behind the rotary sleeve(2). The jaw(4) is screwed with nut(3), a groove is located within the back end of said rotary sleeve(2), said drill chuck provides a ring-shaped element at the back of the chuck body, said ring-shaped element provides spring leaf(61) which has self-locking part (64) fitted with said groove, the rear sleeve has control frame (71) and control frame(72), which respectively control the spring leaf locking engagement or unlocking engagement with groove.

Classes IPC  ?

• B23B 31/10 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe
• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A self-locking hammer-drill chuck includes a chuck body (1), a plurality of jaws (4), a rotating sleeve (2) orientated axial, and a plurality of nuts (3), and a back sleeve (7) at the back of the rotating sleeve (2). The above chuck has a sleeve (5) around the chuck body and there are teeth (51) at the sleeve's backend. The sleeve (5) connects with the rotating sleeve (2) and rotates together. And on the back of the sleeve (5), there is a sliding sleeve (6) that rotates with the chuck body (1) together. In the back sleeve (7), there is a controller (72) which controls the cooperation of the sliding sleeve (6) and the sleeve (5). And at the rotation direction of the controller (72), the above sliding sleeve (6) has grooves (63) engaging with the controller (72) which corresponding to locking state and has grooves (62) engaging with the controller (72) which corresponding to unlocking state. The above chuck can realize self-locking, and it will not loosen under impact load.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement

Abrégé

A self-locking manual tightening drill chuck includes a chuck body, three pawls, an axially located rotating sleeve and a nut. The pawls mesh with the nut via threads. A front annular body is provided in front of the nut, which surrounds the chuck body and can not rotate relative to the chuck body. The back end face of the front annular body is provided with tooth sockets. The rotating sleeve is provided with an intermediate ring that can rotate with the rotating sleeve and slide fore and aft. Said intermediate ring is provided between the nut and the front annular body. The intermediate ring has a locking element that cooperates with the tooth sockets of the front annular body. The front end face of the nut is provided with the configurations that control the disengagement of the locking element of the intermediate ring and the tooth sockets of the front annular body, the configurations that control the engagement of the locking element of the intermediate ring and the tooth sockets of the front annular body and the transition faces between these configurations. The drill chuck has an elastic element that pushes the intermediate rin towards the nut.

Classes IPC  ?

• B23B 31/12 - Mandrins avec mors à action simultanée, qu'ils soient ou non réglables individuellement