Motor

Abstract

The utility model discloses a motor which comprises a support, a stator connected to the support and a rotor penetrating through an inner cavity of the stator, rotating shafts at the two ends of the rotor are rotationally connected with the two ends of the support respectively, a commutator is connected to the rotating shaft of the rotor, and an electric brush corresponding to the commutator is installed on the support. A support of the motor is provided with an electric brush installation hole, the outer wall face of the electric brush is provided with a groove and a protruding shoulder, a cantilever hook is arranged in the groove, a clamping groove is formed between the cantilever hook and the protruding shoulder in a spaced mode, a clamping edge matched with the clamping groove is arranged in the electric brush installation hole, and the electric brush is installed from the electric brush installation hole and extrudes the cantilever hook when installed so that the cantilever hook can be extruded into the groove. And the clamping edge is limited in the clamping groove, so that the electric brush is fixed in the electric brush mounting hole. During assembly, the electric brush is inserted from the electric brush mounting hole without mounting rivets, so that the electric brush is simpler and more convenient to mount and operate.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a motor. Background Art

[0002] The motor generally includes a bracket, a stator connected to the bracket, and a rotor passing through the inner cavity of the stator. The rotating shafts at both ends of the rotor are rotatably connected to the two ends of the bracket respectively. The rotating shaft of the rotor is connected to a commutator, and brushes corresponding to the commutator are installed on the bracket. The commutator completes the commutation of the current through friction contact with the brushes to ensure the normal operation of the motor.

[0003] In the prior art, a mounting hole is provided on the bracket, and the brush is inserted through the mounting hole. A connecting ear is provided on the outer wall of the brush, and the connecting ear is attached to the bracket. The two are connected and fixed by rivets. The installation of the rivets requires mechanical devices to complete, and there are many assembly steps. Utility Model Content

[0004] The main purpose of the utility model is to provide a motor, aiming to facilitate the installation of brushes.

[0005] The utility model provides a motor, comprising a bracket, a stator connected to the bracket, and a rotor passing through an inner cavity of the stator, wherein rotating shafts at both ends of the rotor are rotatably connected to the two ends of the bracket respectively, a commutator is connected to the rotating shaft of the rotor, a brush corresponding to the commutator is installed on the bracket, a brush mounting hole is provided on the bracket, a groove and a convex shoulder are provided on the outer wall surface of the brush, a cantilever hook is provided in the groove, a slot is formed between the cantilever hook and the convex shoulder, a clamping edge adapted to the slot is provided in the brush mounting hole, the brush is installed from the brush mounting hole, and the clamping edge is clamped into the slot to fix the brush in the brush mounting hole.

[0006] Preferably, the cantilever hook comprises a cantilever and a convex buckle arranged on the cantilever, and the end surface of the convex buckle facing away from the convex shoulder is an arc-shaped surface.

[0007] Preferably, the brush mounting hole is square and the brush is a square column.

[0008] The beneficial effects of the motor of the utility model are:

[0009] The motor bracket of the utility model is provided with a brush mounting hole, a groove and a convex shoulder are provided on the outer wall surface of the brush, a cantilever hook is provided in the groove, a slot is formed between the cantilever hook and the convex shoulder, a clamping edge adapted to the slot is provided in the brush mounting hole, the brush is installed from the brush mounting hole, the cantilever hook is squeezed during installation, the cantilever hook is squeezed into the groove, so that the clamping edge slides from the cantilever hook into the slot, the clamping edge is limited in the slot, and the brush is fixed in the brush mounting hole. When assembling, the brush can be inserted from the brush mounting hole without installing rivets, and the installation operation of the brush is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the motor according to an embodiment of the present utility model.

[0011] Figure 2 It is a left side view of the motor according to an embodiment of the present utility model.

[0012] Figure 3 It is a top view of the brush according to an embodiment of the utility model.

[0013] Figure 4 It is a front view of the brush according to an embodiment of the utility model.

[0014] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] Reference Figures 1 to 4 , an embodiment of the motor of the utility model is proposed:

[0017] A motor includes a bracket 1, a stator 2 connected to the bracket 1, and a rotor penetrating the inner cavity of the stator 2. The rotating shafts at both ends of the rotor are rotatably connected to the two ends of the bracket 1, and the rotating shaft 3 at one end extends from one end of the bracket 1. A commutator 4 is connected to the rotating shaft 3 of the rotor, and a brush 5 corresponding to the commutator 4 is installed on the bracket 1.

[0018] The stator 2 is the stationary part of the motor, which generates a magnetic field through the principle of electromagnetic induction. The stator 2 is made of stacked silicon steel sheets, and copper wire windings are embedded in the slots of the silicon steel sheets. The rotor is the rotating part of the motor, located in the inner cavity of the stator. The rotation of the rotor is supported by the rotating shafts at both ends, and the rotating shafts are connected to the bracket 1 through bearings.

[0019] The commutator 4 completes the commutation of the current through friction contact with the brush 5 to ensure the normal operation of the motor. When the motor is powered on, the stator 2 generates a rotating magnetic field to drive the rotor to rotate.

[0020] The bracket 1 is provided with a brush mounting hole, which is square, and the brush 5 is a square column. A groove 51 and a convex shoulder 53 are provided on the outer wall of the brush 5. A cantilever hook 52 is provided in the groove 51, and the cantilever hook 52 includes a cantilever and a convex buckle provided on the cantilever, and a slot 54 is formed between the convex buckle and the convex shoulder 53. A space for the cantilever hook 52 to be pressed internally is reserved between the back of the cantilever hook 52 and the bottom of the groove 51. A clamping edge adapted to the slot 54 is provided in the brush mounting hole, and the brush 5 is installed from the brush mounting hole. When installing, the convex buckle of the cantilever hook 52 is pressed to press the cantilever hook 52 into the groove 51, so that the clamping edge slides from the cantilever hook 52 to the slot 54, and the clamping edge is limited in the slot 54, so that the brush 5 is fixed in the brush mounting hole. When assembling, the brush can be inserted from the brush mounting hole without installing rivets, and the installation operation of the brush is simpler.

[0021] Furthermore, the end surface of the convex buckle facing away from the convex shoulder 53 is an arc-shaped surface, which is more conducive to the clamping edge sliding over the convex buckle.

[0022] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A motor, comprising a bracket, a stator connected to the bracket, and a rotor passing through an inner cavity of the stator, wherein the rotating shafts at both ends of the rotor are rotatably connected to the two ends of the bracket respectively, a commutator is connected to the rotating shaft of the rotor, and a brush corresponding to the commutator is installed on the bracket, characterized in that: A brush mounting hole is provided on the bracket, a groove and a boss are provided on the outer wall surface of the brush, a cantilever hook is provided in the groove, a slot is formed between the cantilever hook and the boss, a clamping edge adapted to the slot is provided in the brush mounting hole, the brush is installed through the brush mounting hole, the clamping edge is clamped into the slot, so that the brush is fixed in the brush mounting hole.

2. The motor according to claim 1, characterized in that The cantilever hook comprises a cantilever and a convex buckle arranged on the cantilever, and the end surface of the convex buckle facing away from the convex shoulder is an arc surface.

3. The motor according to claim 1 or 2, characterized in that: The brush mounting hole is square, and the brush is a square column.

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