A commutator for an electric machine

Abstract

The utility model discloses a motor commutator, including commutator body, fixed end cover, the detachable installation connecting block of commutator body top, the fixed end cover bottom surface fixedly connected sealing rubber ring, the fixed end cover top surface contact upper fixed disc, sealing rubber ring contact connecting block, the connecting block top surface both ends are established location groove respectively, the fixed end cover top surface both ends are established respectively and open the mouth no.

Description

Technical Field

[0001] This utility model relates to the field of motor commutator technology, specifically to a motor commutator. Background Technology

[0002] Electric motors are essential basic equipment in industry, transportation, national defense, and daily life. As one of the core components of an electric motor, the commutator has grown alongside the development of the motor industry. The motor commutator is a crucial component of the armature of DC motors and AC commutator motors, playing a role in commutation during motor rotation. In DC motors and AC series motors, the motor commutator is a component that performs current commutation to ensure the continuous rotation of the motor.

[0003] For example, Chinese utility model patent CN219350890U discloses an installation structure for an oil pump carbon commutator, including a commutator body. A carbon ring is provided around the bottom outer side of the commutator body. In this utility model, the connecting components, end components, upper fixing plate, and fastening bolts are used in conjunction to facilitate disassembly and assembly during use. The connecting shaft is inserted into the inner position of the commutator body. Since the lower fixing plate is provided at the rear end of the connecting shaft, it can abut against the bottom position of the commutator body when inserted into the inner side of the commutator body. When inserting the connecting shaft, the connecting slots at both ends of the inner side of the commutator body facilitate the engagement of the connecting protrusions on both sides of the connecting shaft. Then, the upper fixing plate is placed on the fixed end cover, and then the fastening bolts around the upper end of the upper fixing plate are rotated to rotate and connect to the threaded round holes around the upper end of the connecting shaft. This connection and installation by rotating the bolts makes the installation more convenient and facilitates disassembly later.

[0004] However, existing motor commutators use multiple bolts to connect and install the end cover assembly at the end of the commutator body during use, which makes disassembling the multiple bolts quite troublesome.

[0005] Therefore, we propose a motor commutator to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a motor commutator to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a motor commutator, comprising a commutator body and a fixed end cover, wherein a connecting block is detachably mounted on the top of the commutator body, a sealing ring is fixedly connected to the bottom surface of the fixed end cover, the top surface of the fixed end cover contacts an upper fixed plate, the sealing ring contacts the connecting block, positioning grooves are respectively opened at both ends of the top surface of the connecting block, a first opening is respectively opened at both ends of the top surface of the fixed end cover, a second opening is respectively opened at both ends of the top surface of the sealing ring, and a third opening is respectively opened at both ends of the top surface of the upper fixed plate, a mounting rod is contacted within the positioning groove, the first opening, and the third opening, a limiting plate is fixedly connected to the top of the mounting rod, and a snap-fit ​​is opened on one side of the mounting rod; The connecting block has sliding grooves at both ends. One end of a spring is fixed to one side of the sliding groove, and the other end of the spring is fixed to a slider. The slider slides through the sliding groove. A limiting rod is fixed to the side of the slider away from the spring. The limiting rod engages with a locking slot. A pull rod is fixed to the side of the slider away from the limiting rod. The other side of the pull rod contacts the side of the connecting plate. A handle is fixed to the other side of the connecting plate.

[0008] Preferably, limiting blocks are fixed to both sides of the slider, and limiting grooves are opened on both sides of the slide groove, with the limiting blocks slidably connected to the limiting grooves.

[0009] Preferably, a sliding groove is formed on one side of the sliding groove, and the limiting rod is slidably connected to the sliding groove.

[0010] Preferably, a limiting rotating block is fixedly connected to the side of the connecting plate near the pull rod, and the limiting rotating block is rotatably connected inside the pull rod.

[0011] Preferably, slots are formed on both sides of the connecting block, and the connecting plate and handle are located inside the slots.

[0012] Preferably, the connecting plate contacts one side of the groove, the spring sleeve connects to the pull rod, and the bottom surface of the limiting plate contacts the fixed plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by setting a limiting plate, mounting rod, bayonet, spring, slider, locking rod, pull rod, connecting plate, handle, etc., can limit and fix the position of the mounting rod and limiting plate by positioning the bayonet with the locking rod, thereby installing the fixed end cover at the end of the commutator body. Disassembly is relatively convenient, which facilitates fault diagnosis and daily maintenance. By setting a limiting rotating block, connecting plate, handle, etc., it is easy to fix the position of the limiting locking rod and facilitate operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is a schematic diagram of the top cross-sectional structure of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0015] In the diagram: 1. Commutator body; 2. Connecting block; 21. Positioning groove; 22. Slide groove; 221. Limiting groove; 23. Sliding groove; 24. Groove; 3. Fixed end cover; 31. Through port one; 4. Sealing ring; 41. Through port two; 5. Upper fixing plate; 51. Through port three; 6. Limiting plate; 61. Mounting rod; 611. Bayonet; 7. Spring; 8. Slider; 81. Limiting block; 9. Limiting lever; 10. Pull rod; 11. Limiting rotating block; 12. Connecting plate; 13. Handle. Detailed Implementation

[0016] 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. Example 1

[0017] Please see Figure 1-4 This is the first embodiment of the present utility model. The present utility model provides a technical solution: a motor commutator, including a commutator body 1 and a fixed end cover 3. A connecting block 2 is detachably installed on the top of the commutator body 1. A sealing ring 4 is fixedly connected to the bottom surface of the fixed end cover 3. The top surface of the fixed end cover 3 contacts the upper fixed plate 5. The sealing ring 4 contacts the connecting block 2. The sealing ring 4 is set to make the connection tighter and more reliable and not easy to loosen. Positioning grooves 21 are respectively opened at both ends of the top surface of the connecting block 2. Through opening 31 is respectively opened at both ends of the top surface of the fixed end cover 3. Through opening 41 is respectively opened at both ends of the top surface of the sealing ring 4. Through opening 51 is respectively opened at both ends of the top surface of the upper fixed plate 5. An installation rod 61 is contacted in the positioning groove 21, through opening 31, and through opening 51. A limiting plate 6 is fixedly connected to the top of the installation rod 61. A bayonet 611 is opened on one side of the installation rod 61. Slide grooves 22 are respectively opened at both ends of the connecting block 2. One end of spring 7 is fixedly connected to one side of slide groove 22, and the other end of spring 7 is fixedly connected to slider 8. Slide 8 is slidably connected to slide groove 22. Limiting rod 9 is fixedly connected to the side of slider 8 away from spring 7. Limiting rod 9 is engaged with bayonet 611. Pull rod 10 is fixedly connected to the side of slider 8 away from limiting rod 9. Pull rod 10 contacts the other side of connecting plate 12. Handle 13 is fixedly connected to the other side of connecting plate 12 for easy pulling and rotation. Example 2

[0018] Please see Figure 1-4 This is the second embodiment of the present invention. Based on the previous embodiment, limiting blocks 81 are fixedly connected to both sides of the slider 8, and limiting grooves 221 are opened on both sides of the slide groove 22. The limiting blocks 81 are slidably connected to the limiting grooves 221, which improves the stability of the slider 8 movement and can limit the range of movement of the slider 8.

[0019] A sliding groove 23 is opened on one side of the sliding groove 22, and the limiting rod 9 is slidably connected to the sliding groove 23.

[0020] The connecting plate 12 is fixedly connected to the limiting rotating block 11 on the side near the pull rod 10. The limiting rotating block 11 rotates to connect the pull rod 10, which facilitates the rotation of the handle 13 and the connecting plate 12. When installing the fixed end cover 3, the connecting plate 12 is pulled outward and rotated so that the connecting plate 12 contacts the outside of the connecting block 2, which can limit the connection plate 12 and fix the position of the limiting rod 9, which facilitates the installation of the insertion rod 61.

[0021] The connecting block 2 has slots 24 on both sides, and the connecting plate 12 and handle 13 are located in the slots 24, which can protect the connecting plate 12 and handle 13.

[0022] The connecting plate 12 contacts one side of the groove 24, the spring 7 is sleeved on the pull rod 10, and the bottom surface of the limiting plate 6 contacts the upper fixed plate 5. The limiting plate 6 is used to limit the movement. Example 3

[0023] Please see Figure 1-4 This is the third embodiment of the present invention. Based on the two embodiments described above, in actual use, when installing the fixed end cap 3, the upper fixing plate 5 is placed on the top surface of the fixed end cap 3, and the sealing ring 4 at the bottom of the fixed end cap 3 contacts the connecting block 2. This causes the through-hole 51 on the upper fixing plate 5 to correspond to the through-hole 31 on the fixed end cap 3, which in turn corresponds to the positioning groove 21 on the connecting block 2. By pulling the connecting plate 12, pull rod 10, slider 8, and limiting rod 9 using the handle 13, the slider 8 moves and compresses the spring 7, causing the limiting rod 9 to enter the sliding groove 23. Rotating the handle 13 causes the connecting plate 12 to rotate accordingly. The connecting plate 12 contacts the outer side of the connecting block 2 for limiting, and the position of the limiting rod 9 is fixed. The mounting rod 61 is inserted so that the bottom of the mounting rod 61 contacts the positioning groove 21. By rotating the handle 13, the connecting plate 12 is rotated so that the connecting plate 12 enters the groove 24. The connecting plate 12 is then contacted by the spring 7 on one side of the groove 24. The limiting rod 9 is springed into the slot 611 set by the spring 7. The positions of the mounting rod 61 and the limiting plate 6 are limited and fixed, so that the fixed end cover 3 is installed at the end of the commutator body 1. Disassembly is relatively convenient, which facilitates the inspection and daily maintenance of the commutator body 1.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor commutator, comprising a commutator body (1) and a fixed end cover (3), characterized in that: The commutator body (1) has a detachable connecting block (2) on its top. The bottom surface of the fixed end cover (3) is fixed with a sealing ring (4). The top surface of the fixed end cover (3) contacts the upper fixed plate (5). The sealing ring (4) contacts the connecting block (2). The top surfaces of the connecting block (2) are respectively provided with positioning grooves (21). The top surfaces of the fixed end cover (3) are respectively provided with opening one (31). The top surfaces of the sealing ring (4) are respectively provided with opening two (41). The top surfaces of the upper fixed plate (5) are respectively provided with opening three (51). The positioning groove (21), opening one (31), and opening three (51) are in contact with the mounting rod (61). The top of the mounting rod (61) is fixed with a limiting plate (6). The mounting rod (61) has a bayonet (611) on one side. The connecting block (2) has a sliding groove (22) at both ends. One end of the spring (7) is fixed to one side of the sliding groove (22), and the other end of the spring (7) is fixed to the slider (8). The slider (8) is slidably connected to the sliding groove (22). The side of the slider (8) away from the spring (7) is fixed to the limiting rod (9). The limiting rod (9) is engaged with the bayonet (611). The side of the slider (8) away from the limiting rod (9) is fixed to the pull rod (10). The other side of the pull rod (10) contacts the connecting plate (12). The other side of the connecting plate (12) is fixed to the handle (13).

2. A motor commutator according to claim 1, characterized in that: Limiting blocks (81) are fixedly connected to both sides of the slider (8), and limiting grooves (221) are opened on both sides of the slide groove (22). The limiting blocks (81) are slidably connected to the limiting grooves (221).

3. A motor commutator according to claim 1, characterized in that: A sliding groove (23) is provided on one side of the sliding groove (22), and the limiting rod (9) is slidably connected to the sliding groove (23).

4. A motor commutator according to claim 1, characterized in that: The connecting plate (12) is fixed to the limiting rotating block (11) on the side near the pull rod (10), and the limiting rotating block (11) is rotatably connected to the pull rod (10).

5. A motor commutator according to claim 1, characterized in that: The connecting block (2) has slots (24) on both sides, and the connecting plate (12) and handle (13) are located in the slots (24).

6. A motor commutator according to claim 1, characterized in that: The connecting plate (12) contacts one side of the groove (24), the spring (7) is sleeved on the pull rod (10), and the bottom surface of the limiting plate (6) contacts the upper fixing plate (5).

Images