CN212908456U - Commutator with positioning function - Google Patents

Abstract

The utility model relates to a motor accessory, especially a commutator with positioning action. The utility model provides a following technical scheme: the utility model provides a commutator with positioning action, including the commutator body, the shaft hole has been seted up along the axial in the center of commutator body, and its circumference equidistance is equipped with a plurality of commutator segments, be equipped with positioner on the commutator body, positioner includes the locking ball, can promote the locking ball to make its retaining ring that plays positioning action and make the retaining ring keep at the locking spring of locking ball position, it is equipped with UNICOM shaft hole and external ball hole to correspond the locking ball on the commutator body, the ball hole is along the radial setting of commutator body, the locking ball sets up in the ball hole and can carry out the displacement in the ball hole, the retaining ring overlaps and establishes on the surface that the commutator body corresponds the ball hole position, it is provided with the spring groove to correspond the locking spring in the commutator body, the locking spring is installed in the spring groove. The utility model discloses need not other parts for easy dismounting.

Description

Commutator with positioning function

Technical Field

The utility model relates to a motor accessory, especially a commutator with positioning action.

Background

A commutator, commonly called a commutator, is a component of a dc motor or a permanent magnet series motor for enabling the motor to rotate continuously. When the motor rotates, a winding coil passes through the same directional magnetic field twice per revolution, so that the direction of induced current in the winding is changed, and the commutator is a device for keeping the direction of output current unchanged (consistent).

In the prior art, the commutator is generally fixedly disposed on a rotor of the motor and rotates together with the rotor. However, the commutator itself does not have a positioning structure, and needs to be fixed by other components, so that the commutator is inconvenient to install.

Disclosure of Invention

To the problem that exists among the prior art, the utility model provides a commutator with positioning action need not other parts for easy dismounting.

In order to achieve the above purpose, the utility model provides a following technical scheme: a commutator with a positioning function comprises a commutator body, wherein a shaft hole is axially formed in the center of the commutator body, a plurality of commutator segments are arranged at equal intervals in the circumferential direction of the commutator body, a positioning device is arranged on the commutator body and comprises a locking ball, a retaining ring capable of pushing the locking ball to play a positioning role and a locking spring capable of keeping the retaining ring at a locking ball position, ball holes communicated with the shaft hole and the outside are formed in the commutator body corresponding to the locking ball, the ball holes are radially arranged along the commutator body, the locking ball is arranged in the ball holes and can move in the ball holes, the retaining ring is sleeved on the outer surface of the commutator body corresponding to the ball hole position, a spring groove is formed in the commutator body corresponding to the locking spring, the locking spring is arranged in the spring groove, and a matching piece capable of extending into the spring groove and abutting against the locking spring is arranged on the retaining ring, the spring groove is provided with an opening through which the mating member can pass.

By adopting the technical scheme, the commutator body is sleeved on the motor rotor through the shaft hole and is fixed through the positioning device without being matched with other parts, so that the commutator body is convenient to disassemble and assemble, wherein the positioning device pushes the locking ball through the retaining ring to enable the locking ball to move in the ball hole towards the direction of the shaft hole and extend into the shaft hole, so that the motor rotor can be locked through the locking ball to play a role of fixing, the retaining ring is abutted against the locking spring through the matching piece, the locking spring generates thrust on the matching piece, thereby pushing the retaining ring to keep the retaining ring at the position of the locking ball to maintain the locking of the locking ball to the motor rotor in the shaft hole, when the fixing of the positioning device on the motor rotor is to be released, the retaining ring can be shifted to be away from the position of the locking ball, and the locking ball does not have locking force after losing the acting force of the retaining ring, so that the fixing between the commutator body and the motor rotor is released; in addition, the arrangement of the opening can enable the fitting piece to extend into the spring groove, so that the fitting piece can move along the opening along with the movement of the retaining ring, and the influence on the movement of the retaining ring caused by the arrangement of the fitting piece is avoided.

Furthermore, a limiting groove is formed in the ball hole in the position direction corresponding to the locking ball, and a clamping block which can be matched with the limiting groove and moves in the limiting groove along with the displacement of the locking ball is arranged on the locking ball.

Adopt above-mentioned technical scheme, set up like this and make locking ball accessible fixture block and spacing groove's cooperation and with ball hole clearance fit to avoid the locking ball to break away from the ball hole, when the relative ball hole displacement of locking ball the fixture block moves along the spacing groove, make the setting of fixture block not influence the normal use of locking ball.

Furthermore, a reset spring which can be abutted against the clamping block is arranged in the limiting groove, and the reset spring is arranged at the position, close to the shaft hole, of the limiting groove.

By adopting the technical scheme, the clamping block is pushed to be kept at the position, far away from the shaft hole, in the limiting groove by the abutting of the reset spring and the clamping block, so that the locking ball is driven to be positioned at one end, far away from the shaft hole, of the ball hole, when the retaining ring is positioned at the locking ball position, the locking ball can be pushed to move in the shaft hole, the clamping block also moves along with the locking ball, the reset spring is compressed, the elastic deformation is generated, the reverse acting force is generated on the clamping block, the locking ball is conducted to the locking ball, the locking ball abuts against the retaining ring, and the locking ball also has a certain fixing effect on the; after the retaining ring leaves the position of the locking ball, the fixture block is pushed by the reverse acting force generated by the return spring to keep the fixture block at the position, far away from the shaft hole, in the limiting groove, and leaves the shaft hole, so that the locking of the locking ball pair is released.

Furthermore, two limiting grooves are formed in the spherical hole, and the positions of the two limiting grooves are opposite to each other.

By adopting the technical scheme, the two limiting grooves can enable the locking ball and the matched clamping block to be arranged into two, so that the locking ball and the ball hole are matched more reliably, and the two limiting grooves which are oppositely arranged and the clamping block which is matched with the two limiting grooves enable the locking ball to be stressed uniformly and are more stable when the locking ball moves radially relative to the ball hole.

Further, the spring groove is provided with two or more than two along the circumference equidistance of commutator body, the fitting piece corresponds the spring groove setting, cooperatees with the opening.

By adopting the technical scheme, the matching piece can be matched with the opening, the opening extends into the spring groove to be abutted against the locking spring, the locking spring pushes the retaining ring to keep the retaining ring at the position of the locking ball through the matching piece, two or more locking springs can be arranged in two or more spring grooves, the pushing force of the retaining ring is stronger, and the force on the retaining ring is uniform.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the positioning device.

Fig. 3 is a structure view of the locking ball and the ball hole.

Detailed Description

The following will further describe the embodiments of the present invention with reference to the drawings and examples.

As shown in fig. 1-3, a commutator with positioning function comprises a commutator body 1, wherein a shaft hole 11 is axially formed in the center of the commutator body 1, a plurality of commutator segments 12 are circumferentially and equidistantly arranged on the commutator body 1, a positioning device 2 is arranged on the commutator body 1, the positioning device 2 comprises a locking ball 21, a retaining ring 22 capable of pushing the locking ball 21 to perform positioning function, and a locking spring 23 capable of keeping the retaining ring 22 at the position of the locking ball 21, the commutator body 1 is provided with a ball hole 3 corresponding to the locking ball 21 and communicating the shaft hole 11 with the outside, the ball hole 3 is radially arranged along the commutator body 1, the locking ball 21 is arranged in the ball hole 3 and can be displaced in the ball hole 3, the retaining ring 22 is sleeved on the outer surface of the commutator body 1 corresponding to the position of the ball hole 3, a spring groove 4 is arranged in the commutator body 1 corresponding to the locking spring 23, the locking spring 23 is installed in the spring groove 4, the retaining ring 22 is provided with a fitting piece 5 which can extend into the spring groove 4 and is abutted against the locking spring 23, and the spring groove 4 is provided with an opening 6 through which the fitting piece 5 can pass. The commutator body 1 is sleeved on the motor rotor through the shaft hole 11 and is fixed through the positioning device 2 without being matched with other components, so that the commutator body is convenient to disassemble and assemble, wherein the positioning device 2 pushes the locking ball 21 through the retaining ring 22, so that the locking ball 21 moves towards the shaft hole 11 in the ball hole 3 and extends into the shaft hole 11, the motor rotor can be locked through the locking ball 21 to play a fixing role, the retaining ring 22 is abutted against the locking spring 23 through the matching piece 5, the locking spring 23 generates thrust on the matching piece 5, so that the retaining ring 22 is pushed to be kept at the position of the locking ball 21 to maintain the locking of the locking ball 21 on the motor rotor in the shaft hole 11, when the positioning device 2 is released from fixing the motor rotor, the retaining ring 22 can be pushed to be away from the position of the locking ball 21, and the locking force is not generated after the locking ball 21 loses the acting force of the retaining ring 22, thereby releasing the fixation between the commutator body 1 and the motor rotor; in addition, the opening 6 is arranged to enable the fitting piece 5 to extend into the spring groove 4, so that the fitting piece 5 can move along the opening 6 along with the movement of the retaining ring 22, and the influence of the arrangement of the fitting piece 5 on the movement of the retaining ring 22 is avoided.

The number of the positioning devices 2 is two, and the two positioning devices are respectively arranged at two axial ends of the commutator body 1.

The position direction of the locking ball 21 in the ball hole 3 is provided with a limiting groove 7, and the locking ball 21 is provided with a clamping block 8 which can be matched with the limiting groove 7 and can move in the limiting groove 7 along with the displacement of the locking ball 21. Set up like this and make locking ball 21 accessible fixture block 8 and spacing groove 7's cooperation and with ball hole 3 clearance fit to avoid locking ball 21 to break away from ball hole 3, when locking ball 21 relative ball hole 3 displacement fixture block 8 moves along spacing groove 7, make fixture block 8's setting not influence locking ball 21's normal use.

The limiting groove 7 is internally provided with a return spring 9 which can be abutted against the clamping block 8, and the return spring 9 is arranged at the position, close to the shaft hole 11, of the limiting groove 7. The arrangement can be realized by abutting the reset spring 9 and the fixture block 8, so that the fixture block 8 is pushed to be kept at the position, far away from the shaft hole 11, in the limiting groove 7, and the locking ball 21 is driven to be positioned at one end, far away from the shaft hole 11, of the ball hole 3, when the retaining ring 22 is positioned at the position of the locking ball 21, the locking ball 21 can be pushed to move in the shaft hole 11, the fixture block 8 also moves along with the locking ball, the reset spring 9 is compressed, the elastic deformation is generated, the reverse acting force is generated on the fixture block 8, the reverse acting force is transmitted to the locking ball 21 and is abutted against the retaining ring 22, and the locking ball 21 also has a certain fixing; after the retaining ring 22 leaves the position of the locking ball 21, the latch 8 is pushed by the reverse acting force generated by the return spring 9 to push the latch 8 to be kept at the position in the limiting groove 7 far away from the shaft hole 11, and leave the shaft hole 11, so that the locking of the locking ball 21 is released.

Two limiting grooves 7 in the ball hole 3 are arranged and are oppositely arranged. Two spacing grooves 7 can make locking ball 21 also set up to two rather than complex fixture block 8 for locking ball 21 is more reliable with the cooperation of ball hole 3, and two relative spacing grooves 7 that set up and rather than complex fixture block 8 of locking ball 21, make locking ball 21's atress even, and is more steady when its relative ball hole 3 radial movement.

Spring groove 4 is provided with two or more along the circumference equidistance of commutator body 1, fitting piece 5 corresponds spring groove 4 and sets up, cooperatees with opening 6. The fitting piece 5 can be matched with the opening 6, the fitting piece 6 extends into the spring groove 4 to be abutted against the locking spring 23, the locking spring 23 pushes the retaining ring 22 to be kept at the position of the locking ball 21 through the fitting piece 5, and two or more locking springs 23 can be arranged in two or more spring grooves 4, so that the pushing force of the two or more locking springs to the retaining ring 22 is stronger, and the force applied to the retaining ring 22 is uniform.

Claims (5)

1. The utility model provides a commutator with positioning action, includes the commutator body, the shaft hole has been seted up along the axial in the center of commutator body, and its circumference equidistance is equipped with a plurality of commutator segments, its characterized in that: be equipped with positioner on the commutator body, positioner includes the locking ball, can promote the locking ball to make its retaining ring that plays the positioning action and make the retaining ring keep the locking spring in the locking ball position, it is equipped with UNICOM's shaft hole and external ball hole to correspond the locking ball on the commutator body, the radial setting of commutator body is followed to the ball hole, the locking ball sets up in the ball hole and can carry out the displacement in the ball hole, the retaining ring overlaps to be established on the surface that the commutator body corresponds the ball hole position, this internal locking spring that corresponds of commutator is provided with the spring groove, locking spring installs at the spring inslot, be equipped with on the retaining ring and stretch into the inconsistent fitting piece with locking spring in the spring groove, the spring groove is equipped with the opening that can make the fitting piece pass through.

2. A commutator having a positioning function as defined in claim 1, wherein: the locking ball is provided with a limiting groove corresponding to the position direction of the locking ball in the ball hole, and the locking ball is provided with a clamping block which can be matched with the limiting groove and can move in the limiting groove along with the displacement of the locking ball.

3. A commutator having a positioning function as defined in claim 2, wherein: the limiting groove is internally provided with a reset spring which can be abutted against the clamping block, and the reset spring is arranged at the position, close to the shaft hole, of the limiting groove.

4. A commutator having a positioning function as defined in claim 2 or 3, wherein: the limiting grooves in the spherical hole are provided with two limiting grooves which are arranged oppositely.

5. A commutator having a positioning function as claimed in claim 1, 2 or 3, wherein: the spring groove is provided with two or more than two along the circumference equidistance of commutator body, the fitting piece corresponds the spring groove setting, cooperatees with the opening.

Images