Motor axial wiring structure

Abstract

The utility model relates to power motor technical field, especially a motor axial wiring structure, including shell, first base, second base, drive motor, fixed end cover and wiring main shaft, the shell is provided with the accommodation cavity, drive motor, second base and first base connect in proper order to be set in the accommodation cavity through first base, the fixed end cover sets up at one end of shell to close the accommodation cavity, first base is provided with wiring groove, wiring main shaft sets up in first base to extend to fixed end cover outside one end, wiring main shaft is provided with wiring through -hole, one end of wiring groove is connected to drive motor, and the other end is connected to wiring through -hole. The utility model optimizes the maintainability of product, also promoted structural stability and configuration flexibility, and the comprehensive performance is excellent, has very high practical value and market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to an axial wiring structure for a motor. Background Technology

[0002] In the field of hub motors, traditional motors typically use radial cabling for internal wiring, meaning the cables are led out from the side or circumference of the motor housing. This method has significant drawbacks: the cables must navigate around the rotor, stator, and transmission structure within the housing, resulting in complex and tortuous wiring paths. This makes them prone to friction, interference, and even entanglement with moving parts, leading to cable insulation wear, signal transmission interference, or electrical short circuits, severely impacting motor reliability. Furthermore, multiple radial cable exits disrupt the structural continuity of the motor housing. Each exit requires a separate sealing structure, increasing assembly complexity and significantly raising the risk of seal failure due to the increased number of sealing points. This makes it difficult to effectively isolate external dust, moisture, oil, and other contaminants, limiting the motor's lifespan in harsh industrial environments. In addition, the dispersed cabling results in cluttered external interfaces, causing inconvenience for on-site installation, wiring, and subsequent maintenance, reducing work efficiency.

[0003] While existing technologies offer improvements such as adding protective sleeves or external cable trays, they do not fundamentally restructure the internal wiring architecture and sealing strategy of the motor, failing to simultaneously optimize wiring paths, improve sealing performance, and enhance maintenance convenience. Therefore, the industry urgently needs an innovative motor wiring solution that can achieve centralized, orderly cable routing and routing along the axial direction to comprehensively improve the motor's environmental adaptability, operational reliability, and maintenance efficiency. Utility Model Content

[0004] To address the aforementioned issues, this invention provides an axial wiring structure for motors that effectively improves the motor's environmental adaptability, ease of maintenance, and overall performance by optimizing the wiring path, simplifying the sealing process, and enhancing connection reliability.

[0005] The technical solution adopted by this utility model is: an axial wiring structure for a motor, including a housing, a first base, a second base, a drive motor, a fixed end cover, and a wiring spindle. The housing is provided with a mounting cavity. The drive motor, the second base, and the first base are connected in sequence and are disposed in the mounting cavity through the first base. The fixed end cover is disposed at one end of the housing and closes the mounting cavity. The first base is provided with a wiring groove. The wiring spindle is disposed on the first base and extends to the outside of the fixed end cover at one end. The wiring spindle is provided with a wiring through hole. One end of the wiring groove is connected to the drive motor and the other end is connected to the wiring through hole.

[0006] A further improvement to the above solution is that the outer periphery of the outer shell is provided with assembly ribs, and there are multiple assembly ribs, which are evenly distributed in a circumferential direction on the outer periphery of the outer shell.

[0007] A further improvement to the above solution is that the end of the assembly rib is provided with an assembly connection hole, and the fixed end cap is fixed to the assembly connection hole by screws.

[0008] A further improvement to the above solution is that a weight-reducing groove is provided at the bottom of the outer shell, and multiple weight-reducing grooves are provided, which are evenly distributed in a circumferential direction at the bottom of the outer shell.

[0009] A further improvement to the above scheme is that the first base is provided with a transmission cavity, a transmission component is installed in the transmission cavity, a transmission inner ring is provided in the placement cavity, the transmission component is connected to the transmission inner ring, and the drive motor is provided with a drive shaft, one end of the drive shaft extends to the transmission cavity and is connected to the transmission component.

[0010] A further improvement to the above scheme is that an installation step is provided inside the placement cavity, and the first base is provided with a rotating connecting element. The first base is mounted on the installation step through the rotating connecting element.

[0011] A further improvement to the above solution is that the first base is provided with a fixed connection end, and the second base is provided with a connecting boss, which is disposed on the fixed connection end.

[0012] A further improvement to the above solution is that the fixed connection end is formed by multiple connecting ribs to form a connecting groove, the connecting boss is disposed in the connecting groove, and screws are disposed on the connecting ribs to fix the connecting boss.

[0013] A further improvement to the above solution is that the cable tray includes an upper tray and a lower tray, and a cable hole is provided on the first base. The two ends of the cable hole are respectively connected to the upper tray and the lower tray. The upper tray is used to connect to the cable through hole, and the lower tray is used to connect to the second base.

[0014] A further improvement to the above solution is that the second base is provided with a control board, and the control board is provided with a connector, the insertion end of the connector facing the lower groove.

[0015] A further improvement to the above solution is that the fixed end cover is provided with a sealing element, which is used to seal the connection between the wiring spindle and the fixed end cover.

[0016] The beneficial effects of this utility model are: Compared to existing motor wiring structures, this invention provides a centralized, orderly, and protected axial wiring channel for the motor's internal cables by setting a wiring groove in the first base and cooperating with a wiring spindle having an axial wiring through hole. One end of this channel connects to the drive motor terminal, and the other end extends through the wiring spindle through hole to the outside of the fixed end cover, realizing the direct exit of the cable along the motor axis. This avoids the risks of cables twisting and turning inside the motor and interfering with and wearing with moving parts, as in traditional radial wiring methods, significantly improving the safety and reliability of the wiring layout. At the same time, it makes the internal structure simpler and more compact, which is conducive to the miniaturization design of the motor. The cable is centrally led out from the shaft end, so only key sealing is required at the joint between the wiring spindle and the fixed end cover. For example, mature sealing methods such as sealing rings and sealant can effectively seal this single outlet. Compared to solutions requiring separate sealing of multiple radially scattered cable outlets, this design significantly reduces sealing difficulty and failure risk, improving the overall protection level of the motor. It more effectively prevents external dust, moisture, oil, and other contaminants from entering the motor's internal cavity, thus reliably protecting the drive motor, internal connectors, and other core components. This enhances the motor's long-term operational stability and service life in harsh industrial environments. All external connection cables are uniformly led out from the shaft end, with centralized interfaces, which not only facilitates on-site wiring operations but also makes the motor's appearance cleaner and more aesthetically pleasing. When wiring maintenance or replacement is required, the operation is more focused and convenient. This invention effectively improves the motor's environmental adaptability, maintenance convenience, and overall performance by optimizing the wiring path, simplifying the sealing process, and enhancing connection reliability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the axial wiring structure of the motor of this utility model; Figure 2 for Figure 1 A three-dimensional view of the axial wiring structure of the central motor from another perspective; Figure 3 for Figure 1 Front view of the axial wiring structure of the electric motor; Figure 4 for Figure 3 Sectional view of AA.

[0018] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Housing cavity; 111. Inner transmission ring; 112. Mounting step; 113. Rotary connecting element; 12. Assembly rib; 121. Assembly connecting hole; 13. Weight reduction groove; 2. First base; 21. Wiring groove; 211. Upper groove body; 212. Lower groove body; 22. Transmission cavity; 23. Fixed connecting end; 231. Connecting rib; 24. Wiring hole; 34. Second base; 31. Connecting boss; 32. Control board; 33. Connector; 4. Drive motor; 41. Drive shaft; 5. Fixed end cover; 51. Seal; 6. Wiring spindle; 61. Wiring through hole. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-4As shown, in one embodiment of this utility model, an axial wiring structure for a motor is provided, including a housing 1, a first base 2, a second base 3, a drive motor 4, a fixed end cover 5, and a wiring spindle 6. The housing 1 has a mounting cavity 11. The drive motor 4, the second base 3, and the first base 2 are connected in sequence and are disposed within the mounting cavity 11 via the first base 2. The fixed end cover 5 is disposed at one end of the housing 1 and closes the mounting cavity 11. The first base 2 has a wiring groove 21. The wiring spindle 6 is disposed on the first base 2 and extends one end to the outside of the fixed end cover 5. The wiring spindle 6 has a wiring through hole 61. One end of the wiring groove 21 is connected to the drive motor 4, and the other end is connected to the wiring through hole 61. This embodiment provides a centralized, orderly, and protected axial wiring channel for the internal cables of the motor by providing a wiring groove 21 on the first base 2 and cooperating with a wiring spindle 6 with an axial wiring through hole 61. One end of the channel connects to the terminal of the drive motor 4, and the other end extends through the through hole of the main cable spindle 6 to the outside of the fixed end cover 5, realizing the direct exit of the cable along the motor axis. This avoids the risks of cable twisting and turning inside the motor and interfering with and wearing with moving parts, which is common in traditional radial cable routing. It significantly improves the safety and reliability of the wiring layout, while making the internal structure simpler and more compact, which is conducive to the miniaturization design of the motor. The cable is led out from the shaft end in a concentrated manner, so only the mating point between the main cable spindle 6 and the fixed end cover 5 needs to be sealed. For example, mature sealing methods such as sealing rings and sealant can effectively seal this single outlet. Compared with the solution of sealing multiple radially scattered cable outlets separately, this greatly reduces the sealing difficulty and failure risk, improves the overall protection level of the motor, and can more effectively prevent external dust, moisture, oil and other contaminants from entering the internal housing cavity 11 of the motor. This reliably protects the drive motor 4, internal connecting parts and other core components, and enhances the long-term operating stability and service life of the motor in harsh industrial environments. All external connection cables are uniformly led out from the shaft end, with centralized interfaces, which not only facilitates on-site wiring operations but also makes the motor's appearance cleaner and more aesthetically pleasing. When wiring maintenance or replacement is required, the operation is more centralized and convenient. This embodiment effectively improves the motor's environmental adaptability, maintenance convenience, and overall performance by optimizing the wiring path, simplifying the sealing process, and enhancing connection reliability.

[0022] The outer periphery of the outer casing 1 is provided with mounting ribs 12, and multiple mounting ribs 12 are provided, which are evenly distributed circumferentially around the outer periphery of the outer casing 1. Specifically, the ends of the mounting ribs 12 are provided with mounting connection holes 121, and the fixed end cap 5 is fixed to the mounting connection holes 121 by screws. In this embodiment, multiple mounting ribs 12 are evenly distributed circumferentially around the outer periphery of the outer casing 1, and mounting connection holes 121 are opened at the ends of the ribs. The fixed end cap 5 is fastened to the mounting connection holes 121 by screws, which enhances the connection rigidity and integrity between the outer casing 1 and the fixed end cap 5. It can effectively resist the multidimensional vibration and torsional load generated during motor operation and external installation, prevent the end cap connection from loosening, ensure the long-term alignment accuracy and positional stability of the axial wiring spindle 6 outlet, and avoid sealing failure or cable wear due to vibration displacement. The load distribution of the mating surface between the end cover and the housing 1 was optimized, which improved the sealing uniformity and reliability of the mating surface and provided a solid structural foundation for the high-level sealing at the outlet of the wiring spindle 6, thereby synergistically improving the overall protection performance and operational reliability of the motor.

[0023] The bottom of the outer casing 1 is provided with weight-reducing grooves 13, and multiple weight-reducing grooves 13 are provided, which are evenly distributed in a circumferential direction on the bottom of the outer casing 1. In this embodiment, the multiple weight-reducing grooves 13 evenly distributed in a circumferential direction on the bottom of the outer casing 1 effectively reduce the overall weight, reduce material costs, and are conducive to improving the power density of the motor. The evenly distributed circumferential weight-reducing grooves 13 uniformly disperse the stress of the casing, avoid local stress concentration, and improve the fatigue resistance of the outer casing 1 under vibration conditions. The symmetrical layout of the weight-reducing grooves 13 maintains the dynamic balance of the outer casing 1, reduces vibration caused by uneven mass distribution during high-speed operation, and further ensures the sealing reliability and lifespan of the axial wiring interface.

[0024] The first base 2 is provided with a transmission cavity 22, in which a transmission assembly 23 is installed. A transmission inner ring 111 is provided in the mounting cavity 11. The transmission assembly 23 and the transmission inner ring 111 are connected in a transmission manner. The drive motor 4 is provided with a drive shaft 41, one end of which extends into the transmission cavity 22 and connects to the transmission assembly 23. In this embodiment, by providing a transmission cavity 22 and installing the transmission assembly 23 in the first base 2, and simultaneously providing a matching transmission inner ring 111 in the mounting cavity 11, the drive shaft 41 of the drive motor 4 can extend into the transmission cavity 22 and connect to the transmission assembly 23, thus constructing a highly integrated power output structure with optimized transmission path. This fully utilizes axial space, compactly accommodating the power transmission mechanism within the motor, improving structural integrity and space utilization. The meshing transmission between the transmission assembly 23 and the transmission inner ring 111 achieves efficient and stable torque transmission.

[0025] An installation step 112 is provided inside the mounting cavity 11, and the first base 2 is provided with a rotary connecting element 113. The first base 2 is mounted on the installation step 112 via the rotary connecting element 113. In this embodiment, the installation step 112 constitutes a reliable axial limiting reference, ensuring the coaxiality of the first base 2 and its internal transmission assembly 23 with the mounting cavity 11, effectively reducing accumulated assembly errors and improving the accuracy and smoothness of power transmission. The rotary connecting element 113 (such as a bearing or bushing) enables low-friction, high-precision rotary motion of the first base 2 relative to the outer shell 1, ensuring the stability of the meshing transmission between the inner transmission ring 111 and the transmission assembly 23, and avoiding abnormal wear, vibration, or noise caused by eccentric rotation.

[0026] The first base 2 is provided with a fixed connecting end 23, and the second base 3 is provided with a connecting boss 31, which is disposed on the fixed connecting end 23. Specifically, the fixed connecting end 23 is formed by multiple connecting ribs 231 surrounding a connecting groove, the connecting boss 31 is disposed in the connecting groove, and screws are used to fix the connecting ribs 231 to the connecting boss 31. In this embodiment, by providing a fixed connecting end 23 (forming a connecting groove) formed by multiple connecting ribs 231 in the first base 2, and providing a connecting boss 31 that mates with the connecting groove in the second base 3, and then using screws to fasten the connecting ribs 231 and the connecting boss 31, a high-rigidity and high-precision modular docking structure is achieved. This improves the connection strength and stability between the first base 2 and the second base 3, effectively resists torque and radial loads, prevents relative displacement or vibration during operation, and ensures the long-term alignment of the internal transmission component 23 and the wiring path. The layout of the connecting ribs 231 effectively disperses concentrated stress and improves the fatigue resistance of the connection parts. The screw fastening method provides a detachable and flexible connection, which facilitates assembly, adjustment and subsequent maintenance, while ensuring the sealing and reliability of the connection. It provides a protected and continuous channel for axial wiring, avoiding cable wear or signal interference caused by structural loosening, and enhancing the overall durability and operating accuracy of the system.

[0027] The cable tray 21 includes an upper tray 211 and a lower tray 212. A cable routing hole 24 is provided on the first base 2, with both ends of the hole 24 connecting the upper tray 211 and the lower tray 212 respectively. The upper tray 211 is used to connect to the cable routing through-hole 61, and the lower tray 212 is used to connect to the second base 3. Specifically, by configuring the cable tray 21 as an upper tray 211 and a lower tray 212, and providing a cable routing hole 24 connecting the two on the first base, a smooth and orderly transition of the cable from the outside (entering the upper tray 211 through the cable routing through-hole 61) to the inside (entering the lower tray 212 through the cable routing hole 24, and finally arriving at the second base 3) is achieved. The separate design of the upper and lower trays 212 facilitates layered management and fixation of cables, effectively avoiding tangling and interference of cables in narrow spaces, and reducing the risk of cable damage due to bending and friction. The cable routing hole 24 serves as a guide and transition structure, ensuring the accuracy of the cable path. At the same time, its two-end connection design optimizes routing efficiency and simplifies the assembly process.

[0028] The second base 3 is equipped with a control board 32, on which a connector 33 is mounted, with the insertion end of the connector 33 facing the cable tray 21. In this embodiment, by integrating the control board 32 onto the second base 3 and orienting the insertion end of the connector 33 on the control board 32 toward the cable tray 21, centralized electrical connections and optimized spatial layout are achieved. This allows cables to directly and via a short path from the axial cable tray 21 to the connector 33, significantly shortening cable length, reducing space occupation and the risk of tangling, and improving the neatness and reliability of internal wiring. The orientation design of the connector 33 facilitates quick insertion and removal of cables and assembly, improving production and maintenance efficiency. The control board 32 is fixed to the second base 3, enhancing its vibration resistance and preventing poor contact or signal interference caused by loosening.

[0029] The fixed end cover 5 is provided with a sealing element 51, which is used to seal the connection between the wiring spindle 6 and the fixed end cover 5. In this embodiment, by providing the sealing element 51 on the fixed end cover 5, an effective dynamic seal is achieved between the wiring spindle 6 and the fixed end cover 5, significantly improving the overall sealing performance of the aforementioned axial wiring structure. This prevents short circuits, signal attenuation, or mechanical wear caused by contamination, ensuring the long-term reliability of the electrical connection. The sealing element 51 reduces leakage of internal lubricant, maintaining good lubrication of the transmission system.

[0030] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An axial wiring structure for a motor, characterized in that: The device includes a housing, a first base, a second base, a drive motor, a fixed end cap, and a wiring spindle. The housing has a mounting cavity. The drive motor, the second base, and the first base are connected in sequence and are mounted in the mounting cavity via the first base. The fixed end cap is located at one end of the housing and closes the mounting cavity. The first base has a wiring groove. The wiring spindle is located on the first base and extends one end to the outside of the fixed end cap. The wiring spindle has a wiring through hole. One end of the wiring groove is connected to the drive motor, and the other end is connected to the wiring through hole.

2. The motor axial wiring structure according to claim 1, characterized in that: The outer periphery of the outer shell is provided with assembly ribs, and there are multiple assembly ribs, which are evenly distributed in a circumferential direction on the outer periphery of the outer shell.

3. The motor axial routing structure according to claim 2, characterized in that: The end of the assembly rib is provided with an assembly connection hole, and the fixed end cap is fixed to the assembly connection hole by screws.

4. The motor axial wiring structure according to claim 1, characterized in that: The bottom of the outer shell is provided with a weight reduction groove, and there are multiple weight reduction grooves, which are evenly distributed in a circumferential direction on the bottom of the outer shell.

5. The motor axial wiring structure according to claim 1, characterized in that: The first base is provided with a transmission cavity, a transmission component is installed in the transmission cavity, an inner transmission ring is provided in the mounting cavity, the transmission component is connected to the inner transmission ring, and the drive motor is provided with a drive shaft, one end of which extends to the transmission cavity and is connected to the transmission component.

6. The motor axial routing structure according to claim 1, characterized in that: The mounting cavity is provided with an installation step, and the first base is provided with a rotating connecting element. The first base is mounted on the installation step through the rotating connecting element.

7. The motor axial routing structure according to claim 1, characterized in that: The first base is provided with a fixed connection end, and the second base is provided with a connecting boss. The connecting boss is provided on the fixed connection end. The fixed connection end is surrounded by multiple connecting ribs to form a connecting groove. The connecting boss is provided in the connecting groove, and screws are provided on the connecting ribs to fix the connecting boss.

8. The motor axial routing structure according to claim 1, characterized in that: The cable tray includes an upper tray and a lower tray. A cable hole is provided on the first base. The two ends of the cable hole are connected to the upper tray and the lower tray, respectively. The upper tray is used to connect to the cable through hole, and the lower tray is used to connect to the second base.

9. The motor axial routing structure according to claim 8, characterized in that: The second base is provided with a control board, and the control board is provided with a connector, with the insertion end of the connector facing the lower groove.

10. The motor axial wiring structure according to claim 1, characterized in that: The fixed end cover is provided with a sealing element, which is used to seal the connection between the wiring spindle and the fixed end cover.

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