Motor rear end cover

Abstract

The utility model discloses a motor rear end cover, and relates to the technical field of motors, the motor rear end cover comprises a rear end cover body, a plurality of fixed cylinder members are arranged in the rear end cover body, the fixed cylinder members are provided with conductive yoke iron sheets, and rivets are inserted in the fixed cylinder members and penetrate through the conductive yoke iron sheets; the rear end cover body is provided with a plurality of clamping walls at one side of the fixed cylinder member, and the plurality of clamping walls cooperate with the inner side wall of the rear end cover body to clamp a capacitor member. An anti-falling block is arranged on the inner side wall of the rear end cover body and above the capacitor; one conductive wire of the capacitor device is connected with the rivet; a fixed cylinder piece, a conductive yoke iron sheet and a rivet are arranged in the rear end cover body, so that a conductive wire of the capacitor device can be reliably connected to a rear end cover circuit to fix the capacitor device; the plurality of clamping walls are arranged to be matched with the inner side wall of the end cover body to clamp the capacitor and be matched with the limiting blocks for fixation, so that the fixing reliability of the capacitor is greatly improved, and the possibility of electrical interruption caused by loose connection is reduced.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a motor rear end cover. Background Technology

[0002] As the core equipment for converting electrical energy into mechanical energy, the structural design of the electric motor directly affects its operational stability and service life. The rear end cover of the motor, as an important component, not only protects internal components and supports the motor shaft, but also provides installation space for various electronic components, playing a crucial role in the overall performance of the motor.

[0003] In existing technologies, some motor rear end covers integrate capacitors to meet specific electrical requirements during motor startup and operation. These capacitors are typically suspended within the rear end cover's internal space by welding or wrapping conductive wires to the circuit contacts, thus achieving electrical connection with the motor circuitry.

[0004] Regarding the aforementioned technologies, the inventors believe that the conductive wires of capacitor components are thin in diameter and have limited mechanical strength. Under the vibration and impact generated by the long-term operation of the motor, they are prone to loosening and breakage. Once the conductive wires fail, the capacitor components will not only be dislodged from their intended position, causing an electrical connection interruption, but may also shift or collide inside the motor, leading to serious faults such as short circuits, which will greatly affect the safety and reliability of the motor operation. Utility Model Content

[0005] The purpose of this application is to provide a motor rear end cover to improve the problem that the conductive wire of the capacitor is thin in diameter and has limited mechanical strength, making it prone to loosening and breakage under the vibration and impact generated by the long-term operation of the motor.

[0006] This application provides a rear end cover for a motor, employing the following technical solution:

[0007] A motor rear end cover includes a rear end cover body. A plurality of fixing cylinders are disposed within the rear end cover body. Each fixing cylinder is provided with a conductive yoke sheet, and a rivet is inserted through the conductive yoke sheet within the fixing cylinder. A plurality of engaging walls are disposed on one side of the rear end cover body near the fixing cylinders. A capacitor element is engaged with the inner wall of the rear end cover body via these engaging walls. An anti-detachment block is disposed above the capacitor element on the inner wall of the rear end cover body. One conductive wire of the capacitor element is connected to the rivet.

[0008] By adopting the above technical solution, a fixed cylinder, a conductive yoke, and rivets are set inside the rear cover body to provide a stable basic structure for the electrical connection of the capacitor component, so that the conductive wire of the capacitor component can be reliably connected to the circuit of the rear cover to fix the capacitor component; by setting several locking walls to engage the capacitor component with the inner side wall of the rear cover body and to fix it with the limiting block, the reliability of the capacitor component fixing is greatly improved and the possibility of electrical interruption due to loose connection is reduced.

[0009] Optionally, some of the aforementioned card-fitting wall spacings are provided.

[0010] By adopting the above technical solution, several locking wall intervals are set, which, together with the inner side wall of the rear cover body, form a slot structure, which can limit and fix the capacitor component from multiple directions, improve the stability of the mechanical fixation of the capacitor component, save materials, and facilitate manual removal of the capacitor component through the locking wall intervals.

[0011] Optionally, the inner wall of the rear cover body is provided with a locking groove for engaging and fixing one side of the conductive yoke iron sheet.

[0012] By adopting the above technical solution, the conductive yoke sheet is not prone to shaking or displacement when the motor vibrates due to the constraint of the locking groove, which ensures the stability of the electrical connection between it and the fixed cylinder and rivets, thereby ensuring the reliability of the electrical path between the capacitor and the motor circuit.

[0013] Optionally, the inner wall of the engaging groove is provided with a raised strip along its length, the raised strip is in contact with one side of the conductive yoke iron sheet, and the two side walls of the engaging groove are in contact with the conductive yoke iron sheet.

[0014] By adopting the above technical solution, the raised strip, in conjunction with the locking groove, adheres to and fixes the conductive yoke iron sheet from multiple sides, while reducing the contact area with the conductive yoke iron sheet, thereby reducing power transmission loss and improving power utilization.

[0015] Optionally, guide slopes are provided on both sides of the engaging groove and at one end of the protruding strip to facilitate the insertion of the conductive yoke iron sheet.

[0016] By adopting the above technical solution, the guide slope can play a guiding role when installing the conductive yoke, reducing the installation difficulty, improving the assembly efficiency, reducing the operation time and error rate during the installation process, and reducing damage to the conductive yoke and the rear cover body.

[0017] Optionally, the rear cover body sidewall is provided with a notch or groove for the conductive wire of the capacitor to pass through.

[0018] By adopting the above technical solution, the notch facilitates the passage of the conductive wire, and the routing path of the conductive wire is rationally planned, making the layout of the conductive wire inside the rear end cover more regular and orderly. This helps prevent the conductive wire from randomly winding or bending inside the rear end cover, reducing the risk of short circuits, open circuits, and other faults caused by mutual interference of conductive wires or friction with other components.

[0019] Optionally, the outer side wall of the rear cover body is provided with a side groove corresponding to the notch to accommodate the conductive wire of the capacitor.

[0020] By adopting the above technical solution, the side groove further protects and fixes the conductive wire that passes through the notch, providing a safe storage space for the conductive wire and enhancing the stability and safety of the entire electrical structure of the motor rear end cover.

[0021] Optionally, the top surface of the anti-detachment block is provided with an inclined guide surface.

[0022] By adopting the above technical solution, when installing capacitor components, the inclined guide surface can guide the capacitor components to slide smoothly into the engagement position, which facilitates the installation operation and improves assembly efficiency.

[0023] In summary, this application includes at least one of the following beneficial technical effects of the motor rear end cover:

[0024] 1. The rear cover body is equipped with a fixing cylinder, conductive yoke iron sheet and rivets, which provide a stable basic structure for the electrical connection of the capacitor component, so that the conductive wire of the capacitor component can be reliably connected to the circuit fixing capacitor component of the rear cover; by setting several locking walls to engage the capacitor component with the inner side wall of the rear cover body and with the limiting block for fixing, the reliability of the capacitor component fixing is greatly improved and the possibility of electrical interruption due to loose connection is reduced.

[0025] 2. Several interlocking wall intervals are set, which, together with the inner side wall of the rear cover body, form a slot structure, which can limit and fix the capacitor component from multiple directions, improve the stability of the mechanical fixation of the capacitor component, save materials, and facilitate manual removal of the capacitor component through the interlocking wall intervals.

[0026] 3. The notch and slot facilitate the passage of the conductive wire, and the optimized routing of the wire results in a more orderly and organized layout within the rear end cover. This helps prevent the conductive wire from haphazardly winding or bending within the rear end cover, reducing the risk of short circuits, open circuits, or other malfunctions caused by interference between the wires or friction with other components. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the motor's rear end cover;

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of the structure at point A in the middle.

[0029] In the figure, 1. Rear end cover body; 2. Fixing cylinder; 21. Conductive yoke sheet; 22. Rivet; 3. Engaging wall; 4. Capacitor component; 5. Anti-detachment block; 6. Engaging groove; 7. Protruding strip; 71. Guide slope; 8. Notch groove; 81. Side groove; 9. Inclined guide surface. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0031] A motor rear end cover, as shown in the reference Figure 1 The system includes a rear end cover body 1, typically made of aluminum alloy or engineering plastic, with a disc-shaped structure. Its function is to enclose the rear space of the motor, protect internal components, and provide mounting support for each part. Two cylindrical fixing members 2 are installed inside the rear end cover body 1, integrally formed with it to ensure connection strength. The fixing members 2 support the conductive yoke sheet 21, providing a stable mounting base for the conductive structure.

[0032] Reference Figure 1 A conductive yoke sheet 21 is fixedly installed on the side wall of the fixed cylinder 2. The conductive yoke sheet 21 is a thin sheet made of a metal with good conductivity, such as copper or iron alloy. It is tightly connected to the fixed cylinder 2 by stamping and embedding. After embedding, it can be reinforced by welding or riveting to ensure stable conductivity. A rivet 22 is inserted through the conductive yoke sheet 21 inside the fixed cylinder 2. The rivet 22 is made of metal and is fixed firmly to the fixed cylinder 2 by cold riveting, so that the conductive yoke sheet 21 and the rear cover body 1 form a reliable electrical connection.

[0033] Reference Figure 1 The rear cover body 1 is provided with several locking walls 3 on one side of the fixed cylinder 2. In this embodiment, two locking walls are preferred. The locking walls 3 are spaced apart along the circumferential direction and cooperate with the inner side wall of the rear cover body 1 to form a slot structure for fixing the capacitor 4.

[0034] Reference Figure 1 During installation, the capacitor component 4 is snapped into the slot formed by the locking wall 3 and the inner side wall of the rear cover body 1 to achieve mechanical positioning. One conductive wire of the capacitor component 4 is connected to the rivet 22 by winding to ensure electrical conduction; a notch 8 is provided on the side wall of the rear cover body 1 for the other conductive wire of the capacitor component 4 to pass through; a side groove 81 is provided on the outer side wall of the rear cover body 1 corresponding to the notch 8. The side groove 81 is an elongated groove used to accommodate the conductive wire that passes through the notch 8.

[0035] Reference Figure 1 The inner wall of the rear cover body 1 is integrally provided with an anti-detachment block 5 that fits against the top surface of the capacitor component 4. The top surface of the anti-detachment block 5 is provided with an inclined guide surface 9. The inclined guide surface 9 facilitates the smooth sliding of the capacitor component 4 into the locking position during installation. At the same time, during motor operation, the anti-detachment block 5 plays a role in preventing detachment, limiting, and damping the capacitor component 4.

[0036] Reference Figure 1 , Figure 2 The inner wall of the rear cover body 1 is provided with a locking groove 6 for locking and fixing one edge of the conductive yoke iron piece 21. Guide slopes 71 are provided on both sides of the locking groove 6 and one end of the protrusion 7. The design of the guide slopes 71 facilitates the smooth insertion of the conductive yoke iron piece 21 into the locking groove 6 during installation, achieving rapid positioning.

[0037] The implementation principle of this application embodiment is as follows:

[0038] In actual use, after the conductive yoke iron plate 21 is embedded into the cylinder wall of the fixed cylinder 2 by stamping, it is fixed by cold riveting with metal rivets 22 to form a reliable electrical connection node. The engaging groove 6 cooperates with the guide slope 71 to realize the rapid positioning and stable installation of the conductive yoke iron plate 21. The engaging wall 3 on one side of the rear cover body 1 and the inner side wall form a groove to fix the capacitor 4. One of its conductive wires is wrapped and fixed to the rivet 22, and the other wire passes through the notch 8 and is stored in the outer long strip side groove 81. The inclined guide surface 9 of the anti-detachment block 5 plays a guiding role during installation and limits and buffers the vibration of the capacitor 4 during operation. Through the cooperation of multiple components, the problem of vibration failure of the capacitor 4 due to the insecure fixing of the conductive wire in the prior art is solved, ensuring the safe and reliable operation of the motor.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A motor rear end cover, comprising a rear end cover body (1), characterized in that: The rear end cover body (1) is provided with a plurality of fixed cylinders (2), each fixed cylinder (2) is provided with a conductive yoke iron sheet (21), and a rivet (22) is inserted through the conductive yoke iron sheet (21) in the fixed cylinder (2); the rear end cover body (1) is provided with a plurality of locking walls (3) on one side of the fixed cylinders (2), and the plurality of locking walls (3) are engaged with the inner side wall of the rear end cover body (1) to provide a capacitor (4); the inner side wall of the rear end cover body (1) is provided with an anti-detachment block (5) above the capacitor (4); one conductive wire of the capacitor (4) is connected to the rivet (22).

2. The motor rear end cover according to claim 1, characterized in that: Several of the aforementioned card-fitting walls (3) are spaced apart.

3. The motor rear end cover according to claim 1, characterized in that: The inner wall of the rear cover body (1) is provided with a locking groove (6) for locking and fixing one side of the conductive yoke iron sheet (21).

4. The motor rear end cover according to claim 3, characterized in that: The inner wall of the engaging groove (6) is provided with a raised strip (7) along its length direction. The raised strip (7) is attached to one side of the conductive yoke iron sheet (21), and the two side walls of the engaging groove (6) are attached to the conductive yoke iron sheet (21).

5. A motor rear end cover according to claim 4, characterized in that: The locking groove (6) has guide slopes (71) on both sides and one end of the protrusion (7) to facilitate the insertion of the conductive yoke iron sheet (21).

6. A motor rear end cover according to claim 3, characterized in that: The side wall of the rear cover body (1) is provided with a notch (8) through which the conductive wire of the capacitor component (4) passes.

7. A motor rear end cover according to claim 6, characterized in that: The outer side wall of the rear cover body (1) is provided with a side groove (81) corresponding to the notch (8) to accommodate the conductive wire of the capacitor (4).

8. The motor rear end cover according to claim 1, characterized in that: The top surface of the anti-detachment block (5) is provided with an inclined guide surface (9).

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