Groove type commutator

Abstract

The invention relates to the field of commutators, and discloses a groove type commutator which comprises a base body, the outer wall of the base body is provided with a copper sheet, the outer wall of the copper sheet is provided with a supporting assembly, the inner wall of the supporting assembly is slidably connected with a first sliding column, and the outer wall of the first sliding column is fixedly connected with a limiting block. And the outer wall of the limiting block is slidably connected to the inner wall of the base body, a sliding assembly is arranged on the outer wall of the first sliding column, a blocking piece is fixedly connected to the outer wall of the sliding assembly, a check block is fixedly connected to the outer wall of the sliding assembly, and the outer wall of the check block is attached to the outer wall of the supporting assembly. When moving, the separation blade is matched with the second fixing block to compress the spring, and when the limiting block slides to the position of the groove on the inner wall of the base body, the spring pops up the limiting block to enable the limiting block to be clamped on the inner wall of the base body, so that the copper sheet and the base body are fixed, and the phenomenon that the copper sheet is damaged during operation of the commutator is avoided. And a flying effect is caused due to overlarge centrifugal force.

Description

Technical Field

[0001] The invention relates to the technical field of commutators, in particular to a slot-type commutator. Background Art

[0002] In the field of motors, slot-type commutators, as key components, play a vital role. Their performance directly affects the operating efficiency, stability and service life of the motor. They are usually used in DC motors and AC series-excited motors. When the motor is running, the current flows into the armature winding through the contact between the brush and the commutator. As the armature rotates, the commutator continuously changes the direction of the current.

[0003] The existing slot-type commutator includes a bakelite powder substrate and a plurality of commutation copper sheets evenly distributed on the outer circumference of the bakelite powder substrate. The inner side of the commutation copper sheet is provided with a fixing foot. When the commutation copper sheet is formed, the cross-sectional shape is first drawn out of the copper wire, and then it is punched from the side. The fixing foot is formed during the punching process. However, there is no reinforcement device between the copper sheet and the substrate. This results in a significant increase in the centrifugal force on the copper sheet when the motor is in a high speed or overload operation state. If the connection between the copper sheet and the substrate is not strong enough, the copper sheet may fall off the substrate under the action of centrifugal force, which will not only cause the motor to stop working immediately, but also may cause serious safety threats to the equipment and personnel around the motor. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a slot-type commutator, which solves the problem that there is no reinforcement device between the copper sheet and the base of the existing slot-type commutator, which may cause the copper sheet to fall off and fly out of the base.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a slot-type commutator, comprising a base, the outer wall of the base is provided with a copper sheet, the outer wall of the copper sheet is provided with a supporting assembly, the inner wall of the supporting assembly is slidably connected with a sliding column 1, the outer wall of the sliding column 1 is fixedly connected with a limiting block, the outer wall of the limiting block is slidably connected to the inner wall of the base, the outer wall of the sliding column 1 is provided with a sliding assembly, the outer wall of the sliding assembly is fixedly connected with a baffle, the outer wall of the sliding assembly is fixedly connected with a baffle, the outer wall of the baffle is attached to the outer wall of the supporting assembly, the outer wall of the sliding assembly is provided with a spring, the outer wall of the spring is arranged on the inner wall of the supporting assembly, and the outer wall of the spring is arranged on the outer wall of the baffle.

[0006] Preferably, the supporting assembly includes a fixed block 1, the outer wall of the copper sheet is fixedly connected to the outer wall of the fixed block 1, the inner wall of the fixed block 1 is fixedly connected to the fixed block 2, the outer wall of the sliding column 1 is slidably connected to the inner wall of the fixed block 2, the outer wall of the stop block is attached to the outer wall of the fixed block 2, and the outer wall of the spring is arranged on the inner wall of the fixed block 2.

[0007] Preferably, the sliding assembly includes a connecting rod, the outer wall of the sliding column one is fixedly connected to the outer wall of the connecting rod, the outer wall of the connecting rod is fixedly connected to the sliding column two, the outer wall of the sliding column two is fixedly connected to the inner walls of the baffle and the baffle, and the outer wall of the spring is arranged on the outer wall of the sliding column two.

[0008] Preferably, a slide groove is provided on the inner wall of the base, and the limit block is slidably connected to the inner wall of the base via the slide groove; a groove is provided on the inner wall of the base, and the limit block is arranged on the inner wall of the base via the groove.

[0009] Preferably, the upper surface and the lower surface of the substrate and the copper sheet are both provided with a buffer pad, and the buffer pad is composed of a wear-resistant layer, a silica gel layer and a breathable layer.

[0010] Preferably, the wear-resistant layer is made of carbon fiber and epoxy resin.

[0011] Preferably, the silicone layer is made of silicone rubber.

[0012] Preferably, the breathable layer is made of polyester fiber and spandex fiber.

[0013] Preferably, a reinforcement ring is provided on the outer wall of the base, the inner wall of the reinforcement ring is provided on the outer wall of the copper sheet, a connecting block is fixedly connected to the upper surface of the reinforcement ring, a fixing component is provided on the inner wall of the connecting block, and the fixing component is used to fix the reinforcement ring.

[0014] Preferably, the fixing assembly comprises a threaded rod, the inner wall of the connecting block is threadedly connected to the outer wall of the threaded rod, the outer wall of the threaded rod is threadedly connected to a threaded cap, and the outer wall of the threaded cap is arranged on the outer wall of the connecting block.

[0015] Working principle: When installing the copper sheet, first push the copper sheet to drive the fixed block 1 to move, and further drive the fixed block 2 to move. When the fixed block 2 moves, it will drive the limit block to slide on the inner wall of the base through the slide groove. When the limit block slides, it will drive the sliding column 1 to slide on the inner wall of the fixed block 2, and then drive the connecting rod to move. When the connecting rod moves, it will drive the sliding column 2 to slide on the inner wall of the fixed block 2. The baffle will move synchronously with the movement of the sliding column 2. While the baffle moves, it will also cooperate with the fixed block 2 to compress the spring. When the limit block slides to the groove, the spring will pop out the sliding column 1, and then the limit block will be stuck on the inner wall of the base through the groove, thereby improving the stability of the copper sheet during operation and avoiding the effect of flying sheets.

[0016] Since the wear-resistant layer is made of carbon fiber and epoxy resin, which are both high-strength wear-resistant materials, the overall wear resistance of the buffer pad can be improved. Secondly, through the excellent toughness and resilience of silicone rubber, the shaking generated during the operation of the commutator can be absorbed, and the wear or loosening of the bottom of the commutator caused by direct force can be reduced, thereby improving the mechanical stability of the commutator and the reliability of operation. Since the breathable layer is made of polyester fiber and spandex fiber, which have excellent air permeability and heat dissipation, it can ensure that the heat generated by the commutator during operation can be dissipated in time, avoiding the commutator from overheating due to heat accumulation, thereby affecting its normal working performance and service life. Through the mutual cooperation between the wear-resistant layer, the silicone layer and the breathable layer, the stability and service life of the commutator during operation can be improved.

[0017] First, two reinforcement rings of the same specifications are fitted to the outer walls of the base and the copper sheet, and then the threaded rod is rotated to fix it on the inner walls of the respective connecting blocks. The connecting blocks are then tightened through the threaded caps. Through the mutual cooperation between the threaded rods and the threaded caps, the copper sheet and the base are reinforced, further reducing the risk of flying pieces during commutator operation.

[0018] The present invention provides a slot-type commutator having the following beneficial effects: When the cam is in motion, the stopper is engaged with the first and second members, and ...

[0019] 2. The present invention utilizes the excellent wear resistance of carbon fiber and epoxy resin to protect the commutator from external wear and maintain the integrity of the commutator surface. Since silicone rubber has excellent resilience, it can reduce the shaking of the commutator during operation and prevent the internal parts of the commutator from loosening due to severe shaking, thereby affecting its normal use. The good air permeability and heat dissipation performance of polyester fiber and spandex fiber can effectively release the temperature generated by the commutator during operation. The coordinated operation of the wear-resistant layer, the silicone layer and the breathable layer greatly improves the stability of the commutator during operation and effectively extends its service life.

[0020] 3. After the copper sheet is fixed to the outer wall of the base, the present invention fits the reinforcement ring to the outer wall of the base and the copper sheet, and then tightens the reinforcement ring through the threaded rod and the threaded cap, thereby effectively reinforcing the connection between the copper sheet and the base, further reducing the risk of flying sheets during the operation of the commutator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the copper sheet of the present invention; Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle; Figure 4 It is a partial structural schematic diagram of a sliding column of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the fixing block 2 of the present invention; Figure 6 It is a schematic diagram of the local structure of the substrate of the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle; Figure 8 It is a schematic diagram of the cross-sectional structure of the wear-resistant layer of the present invention; Fig. 9 for Figure 1 Enlarged schematic diagram at point C in the middle.

[0022] Among them, 1. base; 2. copper sheet; 3. fixed block 1; 4. fixed block 2; 5. sliding column 1; 6. limit block; 7. connecting rod; 8. sliding column 2; 9. baffle; 10. baffle; 11. spring; 12. slide groove; 13. groove; 14. buffer pad; 15. wear-resistant layer; 16. silicone layer; 17. breathable layer; 18. reinforcement ring; 19. connecting block; 20. threaded rod; 21. threaded cap. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1 -Attached Figure 7The embodiment of the present invention provides a slot-type commutator, comprising a substrate 1, a copper sheet 2 is provided on the outer wall of the substrate 1, a support assembly is provided on the outer wall of the copper sheet 2, a sliding column 5 is slidably connected to the inner wall of the support assembly, a limit block 6 is fixedly connected to the outer wall of the sliding column 5, the outer wall of the limit block 6 is slidably connected to the inner wall of the substrate 1, a sliding assembly is provided on the outer wall of the sliding column 5, a baffle 9 is fixedly connected to the outer wall of the sliding assembly, a baffle 10 is fixedly connected to the outer wall of the sliding assembly, the outer wall of the baffle 10 is attached to the outer wall of the support assembly, a spring 11 is provided on the outer wall of the sliding assembly, the outer wall of the spring 11 is arranged on the inner wall of the support assembly, and the outer wall of the spring 11 is arranged on the outer wall of the baffle 9; When the stopper 6 is moved, the spring 11 will pop out the stopper 6 and make it stuck on the inner wall of the base 1, thereby fixing the copper sheet 2 and the base 1, and effectively preventing the copper sheet 2 from flying off during operation of the slotted commutator, and ensuring the safety and stability of its operation.

[0025] Please see attached Figure 1 -Attached Figure 7 , the support assembly includes a fixed block 3, the outer wall of the copper sheet 2 is fixedly connected to the outer wall of the fixed block 3, the inner wall of the fixed block 3 is fixedly connected to the fixed block 2 4, the outer wall of the sliding column 5 is slidably connected to the inner wall of the fixed block 2 4, the outer wall of the stopper 10 is fitted to the outer wall of the fixed block 2 4, and the outer wall of the spring 11 is arranged on the inner wall of the fixed block 2 4; the sliding assembly includes a connecting rod 7, the outer wall of the sliding column 5 is fixedly connected to the outer wall of the connecting rod 7, the outer wall of the connecting rod 7 is fixedly connected to the sliding column 2 8, the outer wall of the sliding column 2 8 is fixedly connected to the inner wall of the stopper 9 and the stopper 10, and the outer wall of the spring 11 is arranged on the outer wall of the sliding column 2 8; a sliding groove 12 is provided on the inner wall of the base 1, the limit block 6 is slidably connected to the inner wall of the base 1 through the sliding groove 12, the inner wall of the base 1 is provided with a groove 13, and the limit block 6 is arranged on the inner wall of the base 1 through the groove 13; Specifically, fixed block 13 is used to support fixed block 24, fixed block 24 is used to support sliding column 15 and sliding column 28 for sliding. When sliding column 15 slides, the fixing effect of sliding column 15 and connecting rod 7 will drive connecting rod 7 to move. When connecting rod 7 moves, the fixing effect of connecting rod 7 and sliding column 28 will drive sliding column 28 to move, further driving baffle 9 to move and cooperate with fixed block 24 to compress spring 11 while moving. When limit block 6 slides to the position of groove 13, spring 11 will pop out limit block 6 and fix it on the inner wall of base 1, thereby fixing copper sheet 2 and base 1, avoiding the flying effect of copper sheet 2 due to centrifugal force when the slot-type commutator is working.

[0026] Please see attached Figure 1 and attached Figure 8 The upper and lower surfaces of the substrate 1 and the copper sheet 2 are both provided with a cushion pad 14, and the cushion pad 14 is composed of a wear-resistant layer 15, a silicone layer 16 and a breathable layer 17; the wear-resistant layer 15 is made of carbon fiber and epoxy resin; the silicone layer 16 is made of silicone rubber; the breathable layer 17 is made of polyester fiber and spandex fiber; Specifically, since the wear-resistant layer 15 is made of carbon fiber and epoxy resin, and both carbon fiber and epoxy resin have excellent wear resistance, they can effectively protect the slot-type commutator from external wear. Secondly, through the excellent toughness and resilience of silicone rubber, the external force on the slot-type commutator can be buffered to a certain extent, avoiding the loosening of internal parts due to shaking of the slot-type commutator during operation. Finally, through the excellent air permeability and heat dissipation performance of polyester fiber and spandex fiber, the temperature generated by the slot-type commutator during operation can be effectively released, avoiding the slot-type commutator from malfunctioning due to excessive temperature. Through the mutual cooperation between the wear-resistant layer 15, the silicone layer 16 and the air permeable layer 17, the service life and working stability of the slot-type commutator can be improved.

[0027] Please see attached Figure 1 and attached Fig. 9 The outer wall of the base 1 is provided with a reinforcement ring 18, the inner wall of the reinforcement ring 18 is arranged on the outer wall of the copper sheet 2, the upper surface of the reinforcement ring 18 is fixedly connected with a connection block 19, the inner wall of the connection block 19 is provided with a fixing assembly, and the fixing assembly is used to fix the reinforcement ring 18; the fixing assembly includes a threaded rod 20, the inner wall of the connection block 19 is threadedly connected to the outer wall of the threaded rod 20, the outer wall of the threaded rod 20 is threadedly connected with a threaded cap 21, and the outer wall of the threaded cap 21 is arranged on the outer wall of the connection block 19; Specifically, after the copper sheet 2 is fixed on the outer wall of the base 1, the reinforcement ring 18 is attached to the outer walls of the base 1 and the copper sheet 2, and then the threaded rod 20 is rotated to fix it on the inner wall of the connecting block 19, and then the reinforcement ring 18 is tightened by the threaded cap 21, so as to reinforce the base 1 and the copper sheet 2, and further reduce the risk of flying pieces of the slot-type commutator during operation.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slot-type commutator, comprising a base body (1), characterized in that: The outer wall of the base (1) is provided with a copper sheet (2), the outer wall of the copper sheet (2) is provided with a support assembly, the inner wall of the support assembly is slidably connected to a sliding column 1 (5), the outer wall of the sliding column 1 (5) is fixedly connected to a limit block (6), the outer wall of the limit block (6) is slidably connected to the inner wall of the base (1), the outer wall of the sliding column 1 (5) is provided with a sliding assembly, the outer wall of the sliding assembly is fixedly connected to a baffle (9), the outer wall of the sliding assembly is fixedly connected to a baffle (10), the outer wall of the baffle (10) is attached to the outer wall of the support assembly, the outer wall of the sliding assembly is provided with a spring (11), the outer wall of the spring (11) is arranged on the inner wall of the support assembly, and the outer wall of the spring (11) is arranged on the outer wall of the baffle (9).

2. A slot type commutator according to claim 1, characterized in that: The support assembly comprises a fixed block 1 (3), the outer wall of the copper sheet (2) is fixedly connected to the outer wall of the fixed block 1 (3), the inner wall of the fixed block 1 (3) is fixedly connected to the fixed block 2 (4), the outer wall of the sliding column 1 (5) is slidably connected to the inner wall of the fixed block 2 (4), the outer wall of the stopper (10) is attached to the outer wall of the fixed block 2 (4), and the outer wall of the spring (11) is arranged on the inner wall of the fixed block 2 (4).

3. A slot type commutator according to claim 1, characterized in that: The sliding assembly comprises a connecting rod (7), the outer wall of the sliding column 1 (5) is fixedly connected to the outer wall of the connecting rod (7), the outer wall of the connecting rod (7) is fixedly connected to the sliding column 2 (8), the outer wall of the sliding column 2 (8) is fixedly connected to the inner walls of the baffle (9) and the baffle (10), and the outer wall of the spring (11) is arranged on the outer wall of the sliding column 2 (8).

4. A slot type commutator according to claim 1, characterized in that: The inner wall of the base (1) is provided with a sliding groove (12), and the limit block (6) is slidably connected to the inner wall of the base (1) via the sliding groove (12). The inner wall of the base (1) is provided with a groove (13), and the limit block (6) is arranged on the inner wall of the base (1) via the groove (13).

5. A slot type commutator according to claim 1, characterized in that: The upper and lower surfaces of the base body (1) and the copper sheet (2) are both provided with a buffer pad (14), and the buffer pad (14) is composed of a wear-resistant layer (15), a silica gel layer (16) and a breathable layer (17).

6. A slot type commutator according to claim 5, characterized in that: The wear-resistant layer (15) is made of carbon fiber and epoxy resin.

7. A slot type commutator according to claim 5, characterized in that: The silicone layer (16) is made of silicone rubber.

8. A slot type commutator according to claim 5, characterized in that: The breathable layer (17) is made of polyester fibers and spandex fibers.

9. A slot type commutator according to claim 1, characterized in that: The outer wall of the base body (1) is provided with a reinforcement ring (18), the inner wall of the reinforcement ring (18) is provided on the outer wall of the copper sheet (2), the upper surface of the reinforcement ring (18) is fixedly connected with a connection block (19), the inner wall of the connection block (19) is provided with a fixing component, and the fixing component is used to fix the reinforcement ring (18).

10. A slot type commutator according to claim 9, characterized in that: The fixing assembly comprises a threaded rod (20), the inner wall of the connecting block (19) is threadedly connected to the outer wall of the threaded rod (20), the outer wall of the threaded rod (20) is threadedly connected to a threaded cap (21), and the outer wall of the threaded cap (21) is arranged on the outer wall of the connecting block (19).

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