Motor commutator

Abstract

The utility model relates to a motor commutator which comprises a base body, commutator segments are uniformly distributed on the outer ring of the base body, a commutator seat is arranged on the periphery of the base body, an upper fixing groove is arranged around the base body, a lower fixing groove is arranged around the bottom of the upper fixing groove, and mounting cavities for mounting the base body are arranged in the middle of the upper fixing groove and the middle of the lower fixing groove. The inner side of the reversing seat is provided with an upper fixing block and a lower fixing block which are clamped and matched with the upper fixing groove and the lower fixing groove, the plurality of reversing sheets are fixedly arranged at the upper end of the reversing seat, the periphery of the reversing seat is vertically provided with a plurality of mounting grooves which are fixedly mounted with the motor, the mounting grooves penetrate through the reversing seat, and the reversing seat is connected through the upper fixing block and the lower fixing block. The design of the motor commutator installation groove enhances the overall structural strength of the commutator, and the commutator is stably installed on the internal structure of the motor, thereby ensuring that the commutator can work stably in the operation process of the motor, avoiding the potential safety hazard of the motor caused by the loosening of the commutator, and enabling the product to be more stable.

Description

Technical Field

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

[0002] The motor commutator is an important component in DC motors and AC commutator motors. In DC motors, the commutator is used in conjunction with the brush. By continuously changing the direction of the current in the motor winding, the electromagnetic field of the motor can continue to rotate. The commutator periodically changes the direction of the current in the armature winding to ensure that the electromagnetic torque of the motor is always in the same direction, so that the motor can operate continuously and smoothly. In a series-wound DC motor, the commutator can adjust the speed of the motor by changing the magnitude of the current in the armature or field winding.

[0003] The publication number is: CN108365488A, which discloses a motor commutator, including a base body and commutator segments evenly arranged on the outer circumference of the base body. An insulating groove is provided between adjacent commutator segments for inter-sheet insulation. In the height area where the commutator segments are in contact with the brush, the two side edges of the commutator segments corresponding to the insulating groove are provided with upper straight edges and lower straight edges that are not in the same plane. The upper and lower straight edges are transitioned by an inclined edge. The perpendicular distance between the upper and lower straight edges is less than the width of the insulating groove, which effectively solves the technical problem of the generation of edge sparks and arcs during the operation of the commutator, and improves the service life of the brush and the motor. However, this motor commutator lacks a fixing structure with the motor. If the commutator cannot be firmly fixed on the motor, it will shift or vibrate during operation, resulting in unstable operation of the motor and affecting the smoothness of the output torque. The instability of the commutator will cause it to fall off during the operation of the motor, causing a safety accident. Especially in the case of high-speed operation, the falling-off commutator will break through the housing and cause harm to the operator. Therefore, there is still room for improvement in this technology. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a motor commutator aiming at the deficiencies of the above-mentioned prior art.

[0005] To achieve the above object, the present utility model provides the following technical solutions. A motor commutator includes a base body, and commutator segments are evenly distributed on the outer circumference of the base body. It is characterized in that: a commutator seat is provided on the periphery of the base body, an upper fixing groove is circumferentially provided around the base body, a lower fixing groove is circumferentially provided at the bottom of the upper fixing groove, an installation cavity for installing the base body is provided in the middle of the upper fixing groove and the lower fixing groove, an upper fixing block and a lower fixing block that are clamped and matched with the upper fixing groove and the lower fixing groove are provided on the inner side of the commutator seat, and the base body and the commutator seat are fixed in the installation cavity through the clamping and matching of the upper fixing block and the lower fixing block with the upper fixing groove and the lower fixing groove. The plurality of commutator segments are fixedly arranged at the upper end of the commutator seat, and a plurality of installation grooves for fixedly installing with the motor are vertically provided on the periphery of the commutator seat, and the installation grooves penetrate the commutator seat. The commutator seat is connected through the upper fixing block and the lower fixing block.

[0006] Adopting the above technical solutions, through the clamping and matching of the upper fixing block and the lower fixing block with the upper fixing groove and the lower fixing groove, the base body is firmly fixed in the commutator seat, which greatly improves the mechanical stability of the entire commutator. The design of the installation groove enhances the overall structural strength of the commutator, firmly installs the commutator on the internal structure of the motor, ensures that the commutator can work stably during the operation of the motor, thereby avoiding any displacement or damage caused by vibration or movement, preventing the commutator from falling off during the operation of the motor and causing safety accidents, and making the product more stable.

[0007] The above-mentioned motor commutator can be further set as: a plurality of insulating grooves are evenly distributed on the periphery of the base body, the installation grooves are arranged parallel to the insulating grooves, and the insulating grooves promote the electrical isolation of the commutator segments arranged on the commutator seat.

[0008] Adopting the above technical solutions, the insulating grooves physically isolate each commutator segment, effectively preventing the occurrence of short circuits between different commutator segments, ensuring that the current only flows within the predetermined circuit. The existence of the insulating grooves not only achieves electrical isolation, but also helps the commutator maintain an appropriate temperature during long-term operation through reasonable layout and material selection, avoiding performance degradation or failures caused by overheating. The integrated insulating groove design can simplify the manufacturing process of the commutator and make it easier to mass-produce.

[0009] The above-mentioned motor commutator can be further set as: the commutator segment includes a connection end fixedly connected to the commutator seat, and the other end of the connection end is provided with a bent portion bent downward, and a groove for external fixed connection is formed between the bent portion and the commutator seat.

[0010] With the above technical solution, the design of the fixed end and the bent portion of the commutator segment can stably fix the contact between the commutator segment and the carbon brush in the groove to maintain smooth current transmission, improve the efficiency and lifespan of the motor. The connection end is the part where the commutator segment is fixedly connected to the commutator base, which ensures that the commutator segment can be firmly installed on the commutator base. Through the downward bending design of the bent portion, a groove is formed between the bent portion and the commutator base, enhancing the mechanical strength of the commutator segment. When the commutator segment is subject to large centrifugal force and mechanical stress under the condition of high-speed rotation of the motor, the bent portion can effectively disperse these forces and prevent the commutator segment from deforming or breaking.

[0011] The above-mentioned motor commutator can be further configured as follows: installation bumps are provided on the outer side of the commutator base, a stepped abutting groove is formed between the installation bumps and the outer side of the commutator base, and a through hole for the motor to pass through is provided in the middle of the base body.

[0012] With the above technical solution, the design of the installation bumps and the stepped abutting groove can ensure the precise positioning of the commutator inside the motor, avoid deviations during the assembly process. High-precision assembly helps reduce vibration and noise during the operation of the motor and improves the running stability of the overall equipment. The through hole not only provides an installation channel for the motor shaft but also increases the contact area between the commutator and the air inside the motor, contributing to heat dissipation.

[0013] The above-mentioned motor commutator can be further configured as follows: the upper fixing groove and the upper fixing block are both inclined downward, the lower fixing groove and the upper fixing groove are both inclined upward, and the commutator base is fixedly connected to the base body through embedded pressure glue.

[0014] With the above technical solution, the upper fixing groove and the upper fixing block are both inclined downward, the lower fixing groove and the upper fixing groove are both inclined upward, and the commutator base is fixedly connected to the base body through embedded pressure glue.

[0015] The beneficial effects of the present utility model: The design of the installation groove of the motor commutator enhances the overall structural strength of the commutator, firmly installs the commutator on the internal structure of the motor, ensures that the commutator can work stably during the operation of the motor, avoids potential safety hazards caused by the loosening of the commutator, and makes the product more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is an exploded structural view of the present utility model;

[0018] Figure 3 is a structural diagram of the commutator base of the present utility model;

[0019] Label annotation: 1 - Substrate, 2 - Commutator segment, 3 - Commutator base, 4 - Upper fixing groove, 5 - Lower fixing groove, 6 - Upper fixing block, 7 - Lower fixing block, 8 - Installation cavity, 9 - Installation groove, 10 - Insulation groove, 11 - Connection end, 12 - Bending part, 13 - Groove, 14 - Installation bump, 15 - Abutting groove, 16 - Through hole. Detailed implementation mode

[0020] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0021] As Figures 1-3 As shown, the present invention provides the following technical solution. A motor commutator includes a substrate 1. The outer circumference of the substrate 1 is evenly distributed with commutator segments 2. A commutator base 3 is provided on the periphery of the substrate 1. An upper fixing groove 4 is arranged around the substrate 1. A lower fixing groove 5 is arranged around the bottom of the upper fixing groove 4. Installation cavities 8 for installing the substrate 1 are provided in the middle of the upper fixing groove 4 and the lower fixing groove 5. Upper fixing blocks 6 and lower fixing blocks 7 that are clamped and matched with the upper fixing groove 4 and the lower fixing groove 5 are arranged inside the commutator base 3. The substrate 1 and the commutator base 3 are fixed in the installation cavity 8 through the clamping and matching of the upper fixing blocks 6 and the lower fixing blocks 7 with the upper fixing groove 4 and the lower fixing groove 5. A number of commutator segments 2 are fixedly arranged at the upper end of the commutator base 3. A number of installation grooves 9 for fixedly installing with the motor are vertically arranged on the periphery of the commutator base 3. The installation grooves 9 penetrate the commutator base 3. The commutator base 3 is connected by the upper fixing blocks 6 and the lower fixing blocks 7. Through the clamping and matching of the upper fixing blocks 6 and the lower fixing blocks 7 with the upper fixing groove 4 and the lower fixing groove 5, the substrate 1 is firmly fixed inside the commutator base 3, which greatly improves the mechanical stability of the entire commutator. The design of the installation grooves 9 enhances the overall structural strength of the commutator, firmly installs the commutator on the internal structure of the motor, ensures that during the operation of the motor, the commutator can work stably, thereby avoiding any displacement or damage caused by vibration or movement, preventing the commutator from falling off during the operation of the motor due to instability and causing safety accidents, making the product more stable. A number of insulation grooves 10 are evenly distributed on the periphery of the substrate 1. The installation grooves 9 and the insulation grooves 10 are arranged in parallel. The insulation grooves 10 promote the electrical isolation of the commutator segments 2 arranged on the commutator base 3. The insulation grooves 10 physically isolate each commutator segment 2, effectively preventing the occurrence of short circuits between different commutator segments 2, ensuring that the current only flows within the predetermined circuit. The existence of the insulation grooves 10 not only realizes electrical isolation, but also helps the commutator maintain an appropriate temperature during long-term operation through reasonable layout and material selection, avoiding performance degradation or failures caused by overheating. The integrated design of the insulation grooves 10 can simplify the manufacturing process of the commutator and make it easier for mass production.

[0022] As Figures 1-3 shown, a motor commutator, the commutator segment 2 includes a connection end 11 fixedly connected to the commutator base 3. The other end of the connection end 11 is provided with a bent portion 12 that bends downward. A groove 13 for external fixed connection is formed between the bent portion 12 and the commutator base 3. The design of the fixed end and the bent portion 12 of the commutator segment 2 can stably contact and fix the commutator segment 2 with the carbon brush in the groove 13 to maintain smooth current transmission, improve the efficiency and service life of the motor. The connection end 11 is the part where the commutator segment 2 is fixedly connected to the commutator base 3, which ensures that the commutator segment 2 can be firmly installed on the commutator base 3. Through the downward bending design of the bent portion 12, a groove 13 is formed between the bent portion 12 and the commutator base 3, enhancing the mechanical strength of the commutator segment 2. Under the condition of high-speed rotation of the motor, when the commutator segment 2 is subjected to large centrifugal force and mechanical stress, the bent portion 12 can effectively disperse these forces to prevent the commutator segment 2 from deforming or breaking. An installation convex block 14 is provided on the outer side of the commutator base 3. A stepped abutting groove 15 is formed between the installation convex block 14 and the outer side of the commutator base 3. A through hole 16 for the motor to pass through is provided in the middle of the base body 1. The design of the installation convex block 14 and the stepped abutting groove 15 can ensure the precise positioning of the commutator inside the motor, avoid deviations during the assembly process. High-precision assembly helps to reduce vibration and noise during the operation of the motor and improve the running stability of the overall equipment. The through hole 16 not only provides an installation channel for the motor shaft but also increases the contact area between the commutator and the air inside the motor, contributing to heat dissipation. The upper fixing groove 4 and the upper fixing block 6 are both inclined downward, and the lower fixing groove 5 and the upper fixing groove 4 are both inclined upward. The commutator base 3 is fixedly connected to the base body 1 through embedded glue pressing. The upper fixing groove 4 and the upper fixing block 6 are both inclined downward, and the lower fixing groove 5 and the upper fixing groove 4 are both inclined upward. The commutator base 3 is fixedly connected to the base body 1 through embedded glue pressing.

[0023] The beneficial effects of the present utility model: The design of the installation groove 9 of the motor commutator enhances the overall structural strength of the commutator, firmly installs the commutator on the internal structure of the motor, ensures that the commutator can work stably during the operation of the motor, avoids potential safety hazards caused by the loosening of the commutator to the motor, and makes the product more stable.

Claims

1. A motor commutator, comprising a base body, wherein commutator segments are evenly distributed on the outer circle of the base body, and it is characterized in that: A commutation seat is provided on the periphery of the base body. An upper fixing groove is arranged around the base body. A lower fixing groove is arranged around the bottom of the upper fixing groove. Installation cavities for installing the base body are provided in the middle of the upper fixing groove and the lower fixing groove. An upper fixing block and a lower fixing block which are in clamping fit with the upper fixing groove and the lower fixing groove are arranged on the inner side of the commutation seat. The base body and the commutation seat are fixed in the installation cavity through the clamping fit of the upper fixing block and the lower fixing block with the upper fixing groove and the lower fixing groove. A plurality of commutation plates are fixedly arranged at the upper end of the commutation seat. A plurality of installation grooves fixedly installed with a motor are vertically arranged on the periphery of the commutation seat. The installation grooves penetrate through the commutation seat. The commutation seat is connected through the upper fixing block and the lower fixing block.

2. The armature commutator according to claim 1, wherein: A plurality of insulating grooves are evenly distributed on the periphery of the base body. The installation grooves are arranged parallel to the insulating grooves. The insulating grooves electrically isolate the commutation plates arranged on the commutation seat.

3. The armature commutator according to claim 2, wherein: The commutation plate includes a connection end fixedly connected to the commutation seat. The other end of the connection end is provided with a bent portion bent downward. A groove for external fixed connection is formed between the bent portion and the commutation seat.

4. The armature commutator according to claim 3, wherein: An installation convex block is arranged on the outer side of the commutation seat. A stepped abutting groove is formed between the installation convex block and the outer side of the commutation seat. A through hole for the motor to pass through is provided in the middle of the base body.

5. A motor commutator according to any one of claims 1-4, characterized in that: The upper fixing groove and the upper fixing block are both arranged obliquely downward. The lower fixing groove and the upper fixing groove are both arranged obliquely upward. The commutation seat is fixedly connected to the base body through embedded glue.

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