An easily assembled commutator for an electric motor

Abstract

The utility model relates to the field of commutator, disclose an easily assembled motor commutator, including base, the outer wall of base is opened T type sliding slot, the inner wall of T type sliding slot is inserted with T type sliding block, the outer wall of T type sliding block is fixedly connected with commutator segment, the inner wall of base is opened limit sliding slot, the inner wall of limit sliding slot is provided with limit sliding block, the top outer wall of limit sliding block is fixedly connected with the rotating ring, the top outer wall of rotating ring is opened T type groove, the top outer wall of rotating ring is opened limit slot. In the utility model, through setting up T type sliding slot and T type sliding block, can realize commutator segment independent dismounting, single group fault does not need integral dismounting, reduces maintenance cost and downtime, rotating ring cooperation limit slot, T type groove forms the clamping structure, pushes the commutator segment and rotates the ring lock when installing, and the reverse operation is disassembled, does not need special tool, greatly promotes assembly and maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of commutators, and more particularly to an easy-to-assemble motor commutator. Background Technology

[0002] Easy-to-assemble motor commutators are key components in motors, mainly used in DC motors and AC commutator motors. They are used to realize the periodic change of the direction of the motor rotor current to ensure the continuous and stable operation of the motor.

[0003] Existing easy-to-assemble motor commutators allow workers to quickly assemble components such as commutator segments and insulating substrates according to component matching instructions during the production of small motors, making them suitable for the production and assembly of motors such as household fans and small water pumps.

[0004] Existing easy-to-assemble motor commutators have significant drawbacks during use. On the one hand, their commutator segments are closely integrated with the overall equipment structure, requiring the entire internal components to be disassembled during disassembly and installation. This makes it impossible to replace damaged commutator segments individually, increasing unnecessary operational steps and component wear. On the other hand, special tools are required for assembly during installation. If the corresponding tools are not available on-site, the installation work cannot proceed smoothly, significantly extending maintenance time and reducing overall maintenance efficiency. Therefore, an easy-to-assemble motor commutator is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an easy-to-assemble motor commutator, which aims to improve the problems in the prior art where disassembly and assembly depend on special tools and a single component failure requires the entire unit to be disassembled and maintained.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an easy-to-assemble motor commutator, comprising a base, a T-shaped groove formed on the outer wall of the base, a T-shaped slider inserted into the inner wall of the T-shaped groove, a commutator segment fixedly connected to the outer wall of the T-shaped slider, a limiting groove formed on the inner wall of the base, a limiting slider provided on the inner wall of the limiting groove, a rotating ring fixedly connected to the top outer wall of the limiting slider, a T-shaped groove formed on the top outer wall of the rotating ring, a limiting groove formed on the top outer wall of the rotating ring, a mounting hole formed on the top outer wall of the base, a spring fixedly connected to the inner wall of the mounting hole, and a pressure plate fixedly connected to the top outer wall of the spring.

[0007] As a further description of the above technical solution:

[0008] The base has heat dissipation holes on its inner wall, and a dustproof net is fixedly connected to the bottom inner wall of the heat dissipation holes.

[0009] As a further description of the above technical solution:

[0010] The pressure plate is disposed on the bottom outer wall of the rotating ring.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the T-shaped slider has a limit notch.

[0013] As a further description of the above technical solution:

[0014] The heat dissipation holes are cylindrical, and the outer wall of the dustproof mesh is adapted to the inner wall of the heat dissipation holes.

[0015] As a further description of the above technical solution:

[0016] The commutator segments are provided in several groups, and the several groups of commutator segments are slidably connected in a ring on the outer wall of the base according to the central axis of the base.

[0017] As a further description of the above technical solution:

[0018] The T-slots and limiting slots are provided in several groups. The T-slots and limiting slots are arranged in a ring on the outer wall of the rotating ring according to the central axis of the rotating ring, and the limiting slots and T-slots are spaced apart from each other.

[0019] As a further description of the above technical solution:

[0020] The top outer wall of the rotating ring is provided with several sets of micro protrusions.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting T-shaped slide groove and T-shaped slider, the commutator segments can be independently disassembled and installed. If a single group fails, the whole group does not need to be disassembled, reducing maintenance costs and downtime. The rotating ring, together with the limiting groove and T-shaped groove, forms a locking structure. During installation, the commutator segments are pushed and slid and then the rotating ring is locked. Disassembly is done in reverse. No special tools are required, which greatly improves assembly and maintenance efficiency.

[0023] 2. In this utility model, by setting cylindrical heat dissipation holes on the base, an airflow channel can be formed when the commutator rotates, which can quickly remove the heat generated by the friction between the brush and the commutator segment, thus preventing the components from overheating and aging. The dustproof net at the bottom of the heat dissipation hole can prevent carbon dust from entering, ensuring stable operation and reducing cleaning and maintenance work. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the overall structure of an easy-to-assemble motor commutator proposed in this utility model;

[0025] Figure 2This is an exploded view of the rotating ring structure of an easy-to-assemble motor commutator proposed in this utility model;

[0026] Figure 3 This is a top view schematic diagram of the overall structure of an easy-to-assemble motor commutator proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating ring of an easy-to-assemble motor commutator proposed in this utility model;

[0028] Figure 5 This is a side view of the commutator segment structure of an easy-to-assemble motor commutator proposed in this utility model;

[0029] Figure 6 This is a schematic cross-sectional view of the base structure of an easy-to-assemble motor commutator proposed in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Commutator segment; 3. Rotary ring; 4. Pressure plate; 5. Spring; 6. T-slider; 7. Limiting notch; 8. T-slot; 9. Limiting slot; 10. Limiting slider; 11. Limiting slide groove; 12. T-slot; 13. Mounting hole; 14. Heat dissipation hole; 15. Dustproof net. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-2 , Figure 5 This utility model provides an embodiment of an easy-to-assemble motor commutator, including a base 1 with a T-shaped groove 12 on its outer wall. The T-shaped groove 12 provides a track for a T-shaped slider 6. A T-shaped slider 6 is inserted into the inner wall of the T-shaped groove 12. A limiting notch 7 is provided on the inner wall of the T-shaped slider 6. The limiting notch 7 can cooperate with the limiting groove 9 of the rotating ring 3 to achieve locking. A commutator segment 2 is fixedly connected to the outer wall of the T-shaped slider 6. The T-shaped slider 6 is used to connect the commutator segment 2 to the base 1. Several sets of commutator segments 2 are provided. The several sets of commutator segments 2 are slidably connected in a ring on the outer wall of the base 1 according to the central axis of the base 1. A limiting groove 11 is provided on the inner wall of the base 1. The limiting groove 11 provides rotational guidance for the limiting slider 10. The limiting slider 10 is provided on the inner wall of the limiting groove 11. The limiting slider 10 is used to connect the base 1 and the rotating ring 3 and limit the movement trajectory of the rotating ring 3.

[0034] Reference Figures 2-4 A rotating ring 3 is fixedly connected to the top outer wall of the limiting slider 10. The rotating ring 3 can switch the positions of the T-slot 8 and the limiting groove 9 by rotation. Several sets of micro protrusions are provided on the top outer wall of the rotating ring 3 to increase the friction between the hand and the rotating ring 3, facilitating rotation operation. A T-slot 8 is provided on the top outer wall of the rotating ring 3 for the T-slot 6 to be inserted into the base 1, thereby realizing the individual disassembly and quick installation of the commutator segment 2. A limiting groove 9 is provided on the top outer wall of the rotating ring 3. The limiting groove 9 cooperates with the limiting notch 7 of the T-slot 6 to fix the T-slot 6. Several sets of T-slots 8 and limiting grooves 9 are provided respectively. The several sets of T-slots 8 and several sets of limiting grooves 9 are arranged in a ring around the central axis of the rotating ring 3. The base 1 has a mounting hole 13 on the top outer wall of the rotating ring 3. The mounting hole 13 is used to fix the spring 5. The inner wall of the mounting hole 13 is fixedly connected to the spring 5. The spring 5 can generate an upward elastic force to push the pressure plate 4 to stick tightly to the rotating ring 3. The pressure plate 4 is fixedly connected to the top outer wall of the spring 5. The pressure plate 4 is used to transfer the elastic force of the spring 5 to the rotating ring 3 to prevent the rotating ring 3 from rotating at will. The pressure plate 4 is set on the bottom outer wall of the rotating ring 3 to ensure that the pressure plate 4 can keep in contact with the rotating ring 3 when the rotating ring 3 rotates.

[0035] Reference Figure 3 , Figure 6 The inner wall of the base 1 is provided with heat dissipation holes 14. The heat dissipation holes 14 can form an airflow channel when the commutator rotates, carrying away the heat generated by internal friction. The heat dissipation holes 14 are cylindrical. The cylindrical structure is easy to process and can ensure smooth airflow. A dustproof net 15 is fixedly connected to the bottom inner wall of the heat dissipation holes 14. The dustproof net 15 is used to prevent the debris generated by the friction between the graphite brush and the commutator 2 from entering the interior of the base 1. The outer wall of the dustproof net 15 is adapted to the inner wall of the heat dissipation holes 14. This adaptation structure can ensure that the dustproof net 15 completely covers the heat dissipation holes 14, preventing debris from entering from the gaps.

[0036] Working Principle: When this easy-to-assemble motor commutator is working, the commutator 3 is first rotated by the micro protrusions on the top outer wall of the commutator 3, so that the T-slot 8 on the commutator 3 is aligned with the T-slot 12 on the base 1. At this time, the limiting slider 10 moves synchronously with the commutator 3 within the limiting slot 11 of the base 1. Meanwhile, the pressure plate 4 remains in contact with the commutator 3 under the elastic force of the spring 5 and does not affect the rotation of the commutator 3. Then, the T-slot 6 with the commutator segment 2 is slid into the T-slot 12 through the T-slot 8, completing the initial installation of the commutator segment 2. Subsequently, the commutator 3 is rotated in the opposite direction, so that the limiting slot 9 on the commutator 3... Aligning and engaging with the limiting notch 7 of the T-shaped slider 6, the T-shaped slider 6 and the commutator segment 2 are locked together. At the same time, the spring 5 transmits the elastic force to the rotating ring 3 through the pressure plate 4 to prevent the rotating ring 3 from rotating arbitrarily and causing the locking to fail. During the operation of the commutator, the heat dissipation hole 14 forms an airflow channel to remove internal frictional heat, and the dustproof net 15 blocks the debris generated by friction from entering the base 1. When it is necessary to disassemble or replace the commutator segment 2, the rotating ring 3 is rotated again to separate the limiting groove 9 from the limiting notch 7. The T-shaped slider 6 can be slid out along the T-shaped slide groove 12 and the T-shaped groove 8 to remove the corresponding commutator segment 2 individually.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An easy-to-assemble motor commutator, comprising a base (1), characterized in that: The outer wall of the base (1) is provided with a T-shaped groove (12), and a T-shaped slider (6) is inserted into the inner wall of the T-shaped groove (12). A commutator (2) is fixedly connected to the outer wall of the T-shaped slider (6). The inner wall of the base (1) is provided with a limiting groove (11), and a limiting slider (10) is provided on the inner wall of the limiting groove (11). A rotating ring (3) is fixedly connected to the top outer wall of the limiting slider (10). A T-shaped groove (8) is provided on the top outer wall of the rotating ring (3). A limiting groove (9) is provided on the top outer wall of the rotating ring (3). An installation hole (13) is provided on the top outer wall of the base (1). A spring (5) is fixedly connected to the inner wall of the installation hole (13). A pressure plate (4) is fixedly connected to the top outer wall of the spring (5).

2. The easy-to-assemble motor commutator according to claim 1, characterized in that: The base (1) has heat dissipation holes (14) on its inner wall, and a dustproof net (15) is fixedly connected to the bottom inner wall of the heat dissipation holes (14).

3. The easy-to-assemble motor commutator according to claim 1, characterized in that: The pressure plate (4) is disposed on the bottom outer wall of the rotating ring (3).

4. The easy-to-assemble motor commutator according to claim 1, characterized in that: The inner wall of the T-shaped slider (6) has a limiting notch (7).

5. The easy-to-assemble motor commutator according to claim 2, characterized in that: The heat dissipation hole (14) is cylindrical, and the outer wall of the dustproof mesh (15) is adapted to the inner wall of the heat dissipation hole (14).

6. The easy-to-assemble motor commutator according to claim 1, characterized in that: The commutator segments (2) are provided in several groups, and the several groups of commutator segments (2) are slidably connected in a ring on the outer wall of the base (1) according to the central axis of the base (1).

7. The easy-to-assemble motor commutator according to claim 1, characterized in that: The T-slots (8) and limiting slots (9) are provided in several groups. The T-slots (8) and limiting slots (9) are arranged in a ring on the outer wall of the rotating ring (3) according to the central axis of the rotating ring (3), and the limiting slots (9) and the T-slots (8) are spaced apart from each other.

8. The easy-to-assemble motor commutator according to claim 1, characterized in that: The top outer wall of the rotating ring (3) is provided with several sets of micro protrusions.

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