Abstract

The present invention relates to a device for driving a crane boom assembly. Said device for driving a crane boom assembly has a main boom, a plurality of inserting and withdrawing booms combined inside said main boom to insert and withdraw, a cylinder device for allowing some of said inserting and withdrawing booms to insert and withdraw, wires for allowing the rest of said inserting and withdrawing booms to be operated, and pulleys on which said wires are wound, wherein the device for driving a crane boom assembly comprises: a first cylinder which has a first rod that is fixed to said main boom, and a first cylinder body into which said first rod is inserted to emerge therefrom and which is fixed to a inserting and withdrawing boom, in order to allow said first inserting and withdrawing boom to insert and withdraw from said main boom when said first inserting and withdrawing boom to an Nth inserting and withdrawing boom (N is a natural number which of 4 or more) are sequentially inserted into the inside of said main boom; a second cylinder which has a second rod that is fixed to a second inserting and withdrawing boom, and a second cylinder body into which said second rod is inserted to emerge therefrom and which is fixed to a third inserting and withdrawing boom, in order to operate simultaneously with said first cylinder body and to allow said third inserting and withdrawing boom to insert and withdraw from said second inserting and withdrawing boom; a first wire having one end that is coupled with said main boom, and the other end that is coupled with said second inserting and withdrawing boom; a first pulley which is installed on said first inserting and withdrawing boom, and guides said first wire by hanging said first wire; a second wire having one end that is coupled with said second inserting and withdrawing boom, and the other end that is coupled with said main boom; and a second pulley which is installed on said first inserting and withdrawing boom, and guides said first wire by hanging said first wire.

IPC Classes  ?

• B66C 23/687 - Jibs telescopic
• B66C 23/68 - Jibs foldable or otherwise adjustable in configuration

Abstract

Provided is a motor housing assembly comprising: a cylindrical housing; a plurality of permanent magnets contacting an inner circumferential surface and a bottom surface of the housing and spaced apart from each other in a circumferential direction of the housing; and a plurality of clip members respectively disposed between the permanent magnets and fixed to the inner circumferential surface of the housing to fix the permanent magnets to the inner circumferential surface of the housing, wherein the clip members are fixed to the housing by deformed parts obtained by permanently deforming parts of the housing.

IPC Classes  ?

• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Abstract

The wiper arm assembly includes: an arm head having a support shaft; a retainer including combined with the arm head; and a rotation-preventing unit restricting rotation of the retainer so that the retainer is not rotated past the predetermined angle when the retainer is rotated around the support shaft due to an external force. The retainer includes an accommodation hole having an opened portion so that the support shaft can be attached to or detached from the retainer through the opened portion in a predetermined position, and the support shaft has a first position in which the support shaft cannot be separated from the accommodation hole and a second position in which the support shaft can be separated from the accommodation hole, while the support shaft is rotated within the rotation angle, due to a different cross-sections of the support shaft perpendicular to its lengthwise direction.

IPC Classes  ?

• B60S 1/34 - Wiper armsMountings therefor

Abstract

The wiper arm assembly includes: a blade wiping a glass; a retainer connected to the blade and pressing the blade against the glass; an arm head connected to the retainer; a central hole formed in a center of the blade; a support shaft disposed in the central hole to be perpendicular to a lengthwise direction of the blade; a combination hole which is formed in the retainer and through which the support shaft is rotatably accommodated; and a vibration-preventing unit preventing the blade from freely moving in a widthwise direction of the blade relative to the retainer due to a frictional force between the blade and the glass of the vehicle while the blade rotates forwards and backwards together with the retainer or a rotation-restricting unit restricting rotation of the blade while the blade rotates around the support shaft relative to the retainer by an external force.

IPC Classes  ?

• B60S 1/32 - Wipers or the like, e.g. scrapers characterised by constructional features of wiper blades or arms

Abstract

Provided is a wiper driving apparatus for an automobile. The wiper driving apparatus includes: a housing; a driving motor; a worm wheel installed in the housing to be rotated by the driving motor, connected to a wiper arm, and having protrusions formed on a surface thereof; and a clutch member eccentric with respect to the center of the worm wheel to be rotatably installed in the housing such that power supply to the driving motor is selectively turned on or off according to the position of the rotating clutch member relative to the housing, wherein the clutch member has an engagement unit which is caught by the protrusions of the worm wheel when the worm wheel is rotated in a first direction, and is not caught by the protrusions of the worm wheel when the worm wheel is rotated in a second direction. Accordingly, the wiper driving apparatus enables the clutch member to be disposed within the radius of rotation of protrusions without deviating from its normal track although the protrusions are rotated in a reverse direction.

IPC Classes  ?

• B60S 1/26 - Means for transmitting drive mechanically by toothed gearing

Abstract

Provided is a motor assembly including a supporting body; a bearing member including an inner race and an outer race; and a supporting unit for supporting the bearing member onto the supporting body, wherein the supporting body comprises: a receiving portion with an opening on a portion in the diameter direction of the output shaft for receiving the bearing member having a first supporting surface disposed perpendicularly to the output shaft of the motor and a second supporting surface separated from the first supporting surface in parallel to the first supporting surface; a side surface of the outer race of the bearing member contacts the first supporting surface, the supporting unit includes a bearing sheet that is forcedly inserted between the other side surface of the outer race in the bearing member that is received in the receiving portion and the second supporting surface, wherein the bearing sheet includes a radial supporting portion contacting an outer circumferential surface of the bearing member received in the receiving portion so as to prevent the bearing member from escaping from the receiving portion.

IPC Classes  ?

• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields