Motor structure

The motor structure addresses vibration-induced loosening and electromagnetic interference by using a support partition to stabilize the drive unit and protect the control panel, enhancing structural strength and reducing malfunctions.

JP7835447B2Active Publication Date: 2026-03-25姚立和
View PDF 5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-11-09
Publication Date
2026-03-25

AI Technical Summary

Technical Problem

Conventional electric vehicle motors experience high-frequency vibration leading to loosening and detachment of fixing parts, shaft displacement, and wear, while control panels are susceptible to electromagnetic interference causing malfunctions.

Method used

A motor structure with a support partition sandwiched between two housings to stabilize the drive unit and separate the electromagnetic device from the control panel, dispersing vibrations and reducing electromagnetic interference.

Benefits of technology

Enhances structural strength and stability, reduces vibration-induced failures, and minimizes electromagnetic interference, thereby extending the motor's service life and ensuring reliable operation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0007835447000001
    Figure 0007835447000001
  • Figure 0007835447000002
    Figure 0007835447000002
  • Figure 0007835447000003
    Figure 0007835447000003
Patent Text Reader

Abstract

To provide a motor structure that can effectively suppress interference received by a control panel from an electromagnetic device and reduce the influence of malfunctions on the normal operation of a motor.SOLUTION: A motor structure includes a drive unit arranged in a housing to be oppositely connected to and fixedly mounted in the housing. The housing includes a first casing and a second casing screwed and connected to each other so as to be overlapped each other. A support separation wall is arranged and sandwiched between the first casing and the second casing, and the support separation wall is used to assemble and support the drive unit. The drive unit includes an electromagnetic device mounted to one side surface of the support separation wall, and a control panel having a plurality of electronic components is arranged on one side surface of the support separation wall that is different from the electromagnetic device. As such, the structural strength is enhanced and vibration resulting from operation can be spread. The support separation wall separates the electromagnetic device and the control panel of the drive unit from each other to reduce coming-off due to loosening and abrasion due to the shaft deviation.SELECTED DRAWING: Figure 2
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to the structure of motors.

Background Art

[0002] In the structure of the electromagnetic device and the transmission shaft in the conventional drive motor of an electric vehicle, the electromagnetic device and the transmission shaft are directly provided in the housing, and the reduction transmission mechanism is connected to the load path between the electromagnetic device and the transmission shaft. When the electromagnetic device drives the transmission shaft by electromagnetic action, high-frequency vibration occurs due to the influence of high-speed rotation and load change. The housing is affected by high-frequency vibration over a long period of time, so that the screwed fixing parts become loose and are likely to come off. As a result, the shaft of the rotating parts is displaced and worn, causing damage or failure to the structure of the motor. Furthermore, in the structure of the motor, in order to operate and control the operation or detect the operating state, a control panel of a plurality of electronic components is usually separately provided inside. However, since the control panel is not properly protected, the electronic components on the control panel are very susceptible to interference by the radio waves or magnetism of the electromagnetic device. As a result, the control panel may transmit incorrect commands or data due to interference.

[0003] In other words, there are problems in use such as insufficient support strength and susceptibility to interference of the control panel in the conventional motor of an electric vehicle, which are likely to cause damage or failure.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a motor structure that can enhance the safety in use by reducing the situation of loosening and falling off due to vibration or wear caused by shaft displacement, further extend the service life of the motor, and effectively improve the structural strength and stability.

[0005] The present invention further aims to provide a motor structure in which the control panel is properly protected by reducing interference from electromagnetic devices, such as radio waves or magnetism, that the electronic components receive, thereby reducing situations in which motor malfunctions affect normal operation. [Means for solving the problem]

[0006] The drive unit is provided inside the housing and is coupled and fixed to the housing opposite it. The housing comprises a first housing and a second housing that are screwed together so as to overlap each other, with a support partition sandwiched between the first and second housings. The support partition is used to assemble and support the drive unit. The drive unit is equipped with an electromagnetic device screwed onto one side surface of the support partition. A control panel with multiple electronic components is provided on the other side surface of the support partition, which is different from the electromagnetic device. This improves structural strength, disperses vibrations during operation, reduces loosening and detachment, and prevents shaft misalignment and wear. The support partition separates the electromagnetic device and the control panel of the drive unit. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of the present invention. [Figure 2] This is an exploded perspective view of most of the present invention. [Figure 2A] This is a perspective view of the other side of the second housing in the housing of the present invention. [Figure 3] This is an exploded perspective view of the drive unit according to the present invention. [Figure 4] This is a cross-sectional view of line AA in Figure 1 of the present invention. [Figure 5] This is a cross-sectional view of line BB in Figure 1 of the present invention. [Modes for carrying out the invention]

[0008] The structure of the motor of the present invention, as shown in Figures 1, 2, and 2A, consists of a drive unit 20 provided inside a housing 10 and coupled and fixed to the housing 10 opposite to it. The housing 10 consists of a first housing 11 and a second housing 12 that are screwed together so as to overlap each other, and a support partition wall 15 is sandwiched between the first housing 11 and the second housing 12. The periphery of the support partition wall 15 is provided with a plurality of cylinder portions 150 having perforations that penetrate both sides, and the inside of the second housing 12 is provided with a plurality of keyholes 125 corresponding to the plurality of cylinder portions 150, so that the screw fixing parts 16 pass through the cylinder portions 150 from one side of the support partition wall 15 and are fixed to the keyholes 125 of the second housing 12. (Illustrated in Figure 2A) As a result, the support partition wall 15 is screwed and fixed to the second housing 12 and sandwiched between the first housing 11. The support partition wall 15 can be used to assemble and support the drive unit 20 described above.

[0009] The drive unit 20 described above is further described in Figures 3, 4, and 5. The drive unit 20 includes an electromagnetic device 21 screwed onto one side surface of the support partition wall 15, and the electromagnetic device 21 includes an output shaft 22 that passes through the support partition wall 15. Furthermore, the output shaft 22 of the electromagnetic device 21 is pivotally mounted to the second housing 12 facing the support partition wall 15 by a first bearing 220. The second housing 12 includes a first shaft groove 120 to which the first bearing 220 can be correspondingly mounted (shown in Figure 2A). Furthermore, a reduction gear 23, which meshes with and is driven by the output shaft 22, is provided on the side surface of the drive unit 20 of the support partition wall 15 opposite to the electromagnetic device 21. The ends of the reduction gear 23 are simultaneously pivotally mounted to the second housing 12, which faces the support bulkhead 15, by second bearings 231 and 3 bearings 232, respectively. The second housing 12 is provided with a second shaft groove 122 for mounting corresponding to the third bearing 232 (as shown in Figure 2A), ensuring that the output shaft 22 and the reduction gear 23 mesh reliably and stably, and operate smoothly. Furthermore, a protective frame 25 is screwed into the portion of the support bulkhead 15 that meshes with the output shaft 22 and the reduction gear 23, providing protection and reducing the intrusion of foreign matter. The reduction gear 23 is also equipped with a coaxially rotating first drive wheel 24, and a transmission shaft 28 is provided between the first housing 11 and the second housing 12 to transmit force to the outside of the housing 10, with the transmission shaft 28 passing through the support bulkhead 15. Furthermore, a second drive wheel 26 is provided on the portion of the reduction gear 23 on the transmission shaft 28 that corresponds to the first drive wheel 24. The second drive wheel 26 can rotate coaxially with the transmission shaft 28, and at least one drive component 27 is provided around the first drive wheel 24 and the second drive wheel 26, thereby enabling the reduction gear 23 to drive the transmission shaft 28 with the drive component 27.Furthermore, the first drive wheel 24, the second drive wheel 26, and the drive component 27 can be selected from sprockets, chains, belt pulleys, or belts, and the peripheral speed ratio of the first drive wheel 24 and the second drive wheel 26 can be changed by mixing different diameters. The reduction gear 23, the first drive wheel 24, the second drive wheel 26, and the drive component 27 described above can constitute a reduction transmission mechanism for a load path located between the output shaft 22 and the transmission shaft 28.

[0010] Furthermore, a control panel 30 is provided inside the housing 10 to output operation control commands and data. The control panel 30 comprises at least a microprocessor 31, at least one sensor 32 connected to the microprocessor 31, at least one GPS component 33, at least one transmission component 34, and at least one arithmetic module 35, thereby controlling the operation of the motor, detecting the operating state of the motor, detecting distance, calculating carbon emissions, and transmitting data. Moreover, by providing the control panel 30 on one side of the support partition wall 15 that is different from the electromagnetic device 21, the control panel 30 can reduce interference from the electromagnetic device 21 on the other side of the support partition wall 15.

[0011] As a result, the electromagnetic device 21 of the motor can use electromagnetic action to rotate the output shaft 22, which is the rotor, at high speed. Furthermore, after increasing the torque with the reduction transmission mechanism, it drives the transmission shaft 28 that transmits force to the outside of the housing 10, so that the motor can further drive and propel an electric vehicle. This allows for a motor structure that has excellent structural strength and is less susceptible to interference.

[0012] With the above-described structure and design, when the present invention is actually used, as shown in Figures 2, 4, and 5, when the motor's drive unit 20 operates the transmission shaft 28 to transmit power to the outside, the support partition wall 15 is sandwiched between the first housing 11 and the second housing 12 of the housing 10, so that the output shaft 22 of the drive unit 20 and the reduction gear 23 of the reduction transmission mechanism are in parallel with the housing 10 and the support partition wall 15. As a result, the housing 10 is effectively supported, and high-frequency vibrations caused by the high-speed operation of the electromagnetic device 21 in the drive unit 20 are effectively dispersed and absorbed, thereby suppressing vibration and noise, reducing the likelihood of loosening, detachment, or shaft misalignment due to high-frequency vibrations, and reducing wear and failure of rotating parts, thereby extending the service life of the motor.

[0013] Furthermore, the support partition wall 15 within the housing 10 separates the electromagnetic device 21 of the drive unit 20 from the control panel 30, thereby reducing interference from the electromagnetic device 21's radio waves or magnetism to the microprocessor 31, sensor 32, GPS component 33, transmission component 34, or arithmetic module 35 in the control panel 30, and thereby reducing the occurrence of malfunctions.

[0014] As can be seen from the above description, the structure of the motor of the present invention effectively improves its structural strength and stability by sandwiching the support partition wall 15 within the housing 10 and supporting both the drive unit 20 and the reduction transmission mechanism inside the housing 10 with the support partition wall 15. As a result, vibrations during operation are effectively dispersed, reducing the likelihood of loosening, detachment, or shaft misalignment and wear. Furthermore, the support partition wall 15 separates the electromagnetic device 21 of the drive unit 20 from the control panel 30, thereby properly protecting the control panel 30. This reduces interference between the electronic components on the control panel 30 and the electromagnetic waves or magnetism of the electromagnetic device 21, thereby reducing the impact of malfunctions on the normal operation of the motor and significantly improving its practicality.

Explanation of Symbols

[0015] 10 Basket body 11 First basket body 12 Second basket body 120 First shaft groove 122 Second shaft groove 125 Keyhole 15 Support partition 150 Cylinder part 16 Screwed fixing part 20 Drive unit 21 Electromagnetic device 22 Output shaft 220 First bearing 23 Reduction gear [[ID=3,3]]231 Second bearing 232 Third bearing 24 First drive wheel 25 Protection frame 26 Second drive wheel 27 Drive part 28 Transmission shaft 30 Control panel 31 Microprocessor 32 Sensor 33 GPS part 34 Transmission part 35 Arithmetic module

Claims

1. A housing (10) consisting of a first housing (11) and a second housing (12) that are screwed together so as to overlap each other, A motor structure comprising a drive unit (20) provided between the first housing (11) and the second housing (12) of the housing (10), The outer edges of the first housing (11) and the second housing (12) are provided with corresponding screw connection holes for joining the first housing (11) and the second housing (12) by screwing them together. Inside the housing (10), a support partition wall (15) is positioned between the first housing (11) and the second housing (12). The periphery of the support partition wall (15) is provided with a plurality of cylinder portions (150) having perforations that penetrate both sides, The inside of the second housing (12) is provided with a plurality of keyholes (125) corresponding to the plurality of cylinder portions (150), The screw-fastening component (16) enters the keyholes (125) of the second housing (12) after passing through each cylinder portion (150) from one side of the support partition wall (15), thereby fixing the support partition wall (15) to the second housing (12). The drive unit (20) includes an electromagnetic device (21), the electromagnetic device (21) is fixed to one side of the support partition wall (15) opposite to the second housing (12), and the output shaft (22) of the electromagnetic device (21) passes through the support partition wall (15) and is supported by a first bearing (220), and a first shaft groove (120) for holding the first bearing (220) is provided in the second housing (12). Between the first housing (11) and the second housing (12) of the housing (10), a transmission shaft (28) is provided to transmit force to the outside of the housing (10), and a reduction transmission mechanism is provided in the load path between the output shaft (22) of the electromagnetic device (21) and the transmission shaft (28). The support bulkhead (15) has a hole for the transmission shaft (28) to pass through, the transmission shaft (28) passes through the support bulkhead (15) through the transmission shaft passage hole, and the transmission shaft (28) protrudes to the outside of the housing (10). A motor structure characterized by the following:

2. In the motor structure described in Claim 1, The aforementioned deceleration transmission mechanism is A reduction gear (23) that meshes with and drives the output shaft (22) of the electromagnetic device (21), The first drive wheel (24) rotates coaxially with the reduction gear (23), A second drive wheel (26) that can rotate coaxially with the transmission shaft (28), A drive component (27) that forms an interlocking relationship between the first drive wheel (24) and the second drive wheel (26), and having The peripheral speed ratio between the output shaft (22) and the transmission shaft (28) can be changed by different wheel size ratios between the reduction gear (23) and the first drive wheel (24), and between the first drive wheel (24) and the second drive wheel (26). The reduction gear (23) and the first drive wheel (24) are positioned between the support bulkhead (15) and the second housing (12) on one side of the support bulkhead (15) that is different from the mounting surface of the electromagnetic device (21). The reduction gear (23) and one end of the rotating shaft of the first drive wheel (24) are supported by a second bearing (231), and the second bearing (231) is held in a shaft groove provided in the support partition wall (15). The other end of the rotation shaft of the reduction gear (23) and the first drive wheel (24) is supported by a third bearing (232), which is held in a second shaft groove (122) provided in the second housing (12). A motor structure characterized by the following:

3. In the motor structure described in Claim 2, A protective frame (25) is screwed into the portion of the support partition wall (15) that meshes with the reduction gear (23) in relation to the output shaft (22). A motor structure characterized by the following:

4. In the motor structure described in claim 2, The first drive wheel (24), the second drive wheel (26), and the drive component (27) are selected from a sprocket and a chain. A motor structure characterized by the following:

5. In the motor structure described in Claim 1, A control panel (30) is provided inside the housing (10), and the control panel (30) is located on one side of the support partition wall (15) opposite to the electromagnetic device (21). A motor structure characterized by the following:

6. In the motor structure described in Claim 5, The control panel (30) comprises at least a microprocessor (31), at least one sensor (32) connected to the microprocessor (31), at least one GPS component (33), at least one transmission component (34), and at least one arithmetic module (35). A motor structure characterized by the following:

Citation Information

Patent Citations

  • Pump unit

    JP2013027184A

  • Motor vehicle drive device

    JP2017101771A

  • Drive unit for man powered vehicle

    JP2020179813A

  • Drive device and electric vehicle

    JP2022121335A

  • Vehicular drive device

    WO2021140712A1