Test fixture for hub motor

Abstract

A test fixture for a wheel hub motor includes a bearing platform and a test fixture. The bearing platform is used for carrying the wheel hub motor. The test fixture can be detachably assembled on the wheel hub motor. The test fixture includes a fixture body and an output shaft. The fixture body has a first side surface and a second side surface that are opposite to each other. The first side surface faces the wheel hub motor, and the output shaft is disposed on the second side surface. The wheel hub motor has a bearing member, and the bearing member has a first end and a second end. When the wheel hub motor is disposed on the bearing platform and the test fixture is installed on the wheel hub motor, the first end of the bearing member is fixed to the bearing platform, and the second end of the bearing member is connected to the output shaft.

Description

Technical Field

[0001] This invention relates to a test fixture for a hub motor, and more particularly to a test fixture for a hub motor coupled with a drum brake system. Prior Technology

[0002] A wheel hub motor, also known as an in-wheel motor, is a motor integrated into the wheel hub and is commonly found in electric bicycles and electric motorcycles. Wheel hub motors can be paired with different braking systems, including drum brakes and disc brakes, allowing users to choose according to their needs.

[0003] During the design, manufacturing, and production of hub motors, characteristic tests are required, such as power testing, torque testing, and braking performance testing. For torque testing, if the hub motor is paired with a disc brake system, the disc mounting location can be modified into an output shaft, allowing the motor to be connected to a torque meter via a coupling for torque measurement. However, if the hub motor is paired with a drum brake system, this modification is not possible due to structural differences. Connecting an external adapter shaft to a hub motor with a drum brake system requires removing 6 to 10 screws from the motor before installing a fixture, a time-consuming process unsuitable for mass production testing.

[0004] Therefore, how to overcome the above-mentioned defects through structural design improvements has become one of the important issues to be addressed in this field. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a test fixing device for a hub motor, which addresses the shortcomings of the prior art.

[0006] To address the aforementioned technical problems, one technical solution adopted by this invention is to provide a testing and fixing device for a hub motor, comprising a support platform and a testing fixture. The support platform supports a hub motor. The testing fixture is detachably mounted on the hub motor. The testing fixture includes a fixture body and an output shaft. The fixture body has a first side and a second side opposite to each other. The first side faces the hub motor, and the output shaft is disposed on the second side. The hub motor has a bearing component with a first end and a second end. When the hub motor is mounted on the support platform and the testing fixture is mounted on the hub motor, the first end of the bearing component is fixed to the support platform, and the second end of the bearing component is connected to the output shaft.

[0007] One of the beneficial effects of this invention is that the test fixture for the hub motor provided by this invention is used to mount the hub motor on the support platform and to install the test fixture on the hub motor, connecting the bearing components to the output shaft. In this way, the motor torque can be transmitted to the output shaft through the fixture for torque testing. Since both the test fixture and the support platform can be quickly assembled and disassembled, the replacement time can be effectively shortened, thereby reducing production costs.

[0008] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Simple Explanation of the Diagram

[0009] Figure 1 is an exploded view of the test fixture for the hub motor according to an embodiment of the present invention.

[0010] Figure 2 is a schematic diagram of the test fixture according to an embodiment of the present invention.

[0011] Figure 3 is a schematic diagram of the carrier platform according to an embodiment of the present invention.

[0012] Figure 4 is a first schematic diagram of a bearing platform supporting a hub motor according to an embodiment of the present invention.

[0013] Figure 5 is a second schematic diagram of the bearing platform supporting the hub motor according to an embodiment of the present invention.

[0014] Figure 6 is a schematic diagram of the assembled test fixing device for the hub motor according to an embodiment of the present invention. Implementation

[0015] The following specific embodiments illustrate the implementation of the "test fixing device for hub motors" disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention. In addition, it should be understood that although terms such as "first," "second," and "third" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another. Furthermore, the term "or" used herein may, depending on the actual situation, include any combination of one or more of the associated listed items.

[0016] [Example]

[0017] Referring to Figures 1 to 3, Figure 1 is an exploded view of the test fixture for a hub motor according to an embodiment of the present invention, Figure 2 is a schematic diagram of the test jig according to an embodiment of the present invention, and Figure 3 is a schematic diagram of the support platform according to an embodiment of the present invention. An embodiment of the present invention provides a test fixture for a hub motor, comprising: a support platform 1 and a test jig 2. The support platform 1 is used to support a hub motor 3. Specifically, the hub motor 3 is disposed within the hub of a wheel, and the support platform 1 supports the wheel hub. The test jig 2 is detachably mounted to the hub motor 3. It should be noted that a wheel consists of two main parts: a hub and a tire, with the tire enclosing the hub.

[0018] The test fixture 2 includes a fixture body 21, an output shaft 22, and multiple clamping members 23. The output shaft 22 and the multiple clamping members 23 are disposed on the fixture body 21. As shown in Figure 2, the four clamping members 23 are symmetrically distributed around the fixture body 21. The fixture body 21 has a first side 211 and a second side 212 on opposite sides. The output shaft 22 is disposed on the second side 212 and is located in the central region of the fixture body 21. Specifically, the fixture body 21 forms an opening in its central region that passes through the first side 211 and the second side 212, and the output shaft 22 is disposed correspondingly at the position of the opening. In addition, the output shaft 22 has a shaft hole 220, the position of which corresponds to the position of the opening in the fixture body 21 and is interconnected. Alternatively, for example, the clamping member 23 can be an elbow clamp. The elbow clamp can be bent like an elbow to adjust the clamping angle to fix or clamp an object.

[0019] As shown in Figure 3, the support platform 1 includes a support part 11, a U-shaped block 12, and a base 13. The support part 11 is fixed to the base 13, and a recess 110 is formed at the top of the support part 11. The support part 11 and the U-shaped block 12 can be assembled and disassembled with each other by multiple screws R. When the support part 11 and the U-shaped block 12 are assembled, the recess of the U-shaped block 12 faces downward and aligns with the recess 110 of the support part 11, so that the recess of the support part 11 and the recess 110 of the U-shaped block 12 together form a fixing hole 10 (see Figure 1).

[0020] Referring to Figures 1, 4, and 5, Figures 4 and 5 are schematic diagrams of a hub motor supported by a support platform according to an embodiment of the present invention. The hub motor 3 has a bearing component 31, which has a first end 311 and a second end 312. When the hub motor 3 is mounted on the support platform 1, the first end 311 of the bearing component 31 passes through the fixing hole 10 and is fixed to the support platform 1 (the upper and lower assembly of the support part 11 and the U-shaped block 12 can fix the bearing component 31).

[0021] On the other hand, referring to Figures 1, 5, and 6, Figure 6 is a schematic diagram of the assembled test fixture for the hub motor according to an embodiment of the present invention. After the hub motor 3 is placed on the support platform 1, the test fixture 2 is further installed on the hub motor 3. The first side 211 of the fixture body 21 faces and abuts against the disc-shaped cover 32 of the hub motor 3, and then the four clamping members 23 are operated to clamp the hub motor 3. It should be noted that when the test fixture 2 is installed on the hub motor 3, the bearing member 31 of the hub motor 3 is aligned with the center area of ​​the fixture body 21, so that the output shaft 22 and the bearing member 31 are concentrically aligned. Then, the bearing member 31 of the hub motor 3 is aligned and inserted into the shaft hole 220 of the output shaft 22, so that the bearing member 31 is connected to the output shaft 22. Therefore, during torque testing, the hub motor 3 can be connected to a coupling (not shown) via the output shaft 22 of the test fixture 2, and the coupling can be further connected to a torque meter (not shown) to measure the torque output of the hub motor 3. More precisely, the torque output of the hub motor 3 is output from the hub through the tire, and the fixture transmits the torque from the tire to the output shaft 22 so that the torque meter can measure it.

[0022] The test fixture 2 of this invention utilizes a toggle clamp to secure the hub motor 3, enabling rapid replacement and effectively reducing the time required for the replacement process. Furthermore, since the test fixture 2 is directly fixed to the tire, the hub motor 3 can be externally connected to a torque meter via the output shaft 22 of the test fixture 2, thus the measured torque will be close to the output in actual application. It should also be noted that the test fixture 2 of this invention is also applicable to hub motors 3 that are not mounted on a tire (i.e., the wheel only has a hub).

[0023] [Beneficial Effects of the Examples]

[0024] In summary, this invention involves mounting a hub motor 3 on a support platform 1 and then assembling a test fixture 2 onto the wheel, aligning the bearing 31 with and inserting it into the shaft hole 220 of the output shaft 22. In this way, the hub motor 3 can be connected to a coupling (not shown) via the output shaft 22 of the test fixture 2, and further connected to a torque meter (not shown) to measure the torque output of the hub motor 3.

[0025] Furthermore, since the hub motor 3 is secured using a toggle clamp, it can be quickly replaced, effectively reducing the time required for the replacement process. In addition, since the test fixture 2 is directly fixed to the tire, and the hub motor 3 inside the wheel hub can be connected to a torque meter via the output shaft 22 of the test fixture 2, the measured torque will be close to the output during actual application.

[0026] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention specification and drawings are included in the scope of the patent application of the present invention.

[0027] 1: Supporting Platform 10: Fixing hole 11: Bearing section 110: concave part 12: U-shaped block 13: Base 2: Test fixture 21: Fixture body 211: First side view 212: Second side view 22: Output shaft 220: Shaft hole 23: Clamping component 3: Hub motor 31: Bearing components 311: First end 312: Second end 32: Disc-shaped lid R: Screws

Claims

1. A test fixture for a hub motor, comprising: A support platform for supporting a hub motor; A test fixture is detachably mounted on the hub motor. The test fixture includes a fixture body and an output shaft. The fixture body has a first side and a second side on opposite sides. The first side faces the hub motor, and the output shaft is disposed on the second side. The hub motor has a bearing component with a first end and a second end. When the hub motor is disposed on the support platform and the test fixture is mounted on the hub motor, the first end of the bearing component is fixed to the support platform, and the second end of the bearing component is connected to the output shaft.

2. The test fixture for the hub motor as described in claim 1, wherein, The test fixture also includes multiple clamping components disposed on the fixture body, with the multiple clamping components symmetrically distributed around the fixture body.

3. The test fixture for the hub motor as described in claim 2, wherein, The clamping device is a toggle clamp.

4. The test fixture for the hub motor as described in claim 2, wherein, When the test fixture is installed on the hub motor, the plurality of clamping members are used to clamp the hub motor, thereby fixing the test fixture to the hub motor.

5. The test fixture for the hub motor as described in claim 4, wherein, The output shaft is located in the central area of ​​the fixture body; when the test fixture is installed on the hub motor, the output shaft and the bearing are aligned concentrically, so that the bearing of the hub motor is aligned and connected to the output shaft.

6. The test fixture for the hub motor as described in claim 1, wherein, The support platform includes a support part and a U-shaped block that can be assembled and disassembled. A recess is formed at the top of the support part. When the support part and the U-shaped block are assembled, the recess and the U-shaped block together form a fixing hole.

7. The test fixture for the hub motor as described in claim 6, wherein, The first end of the bearing component passes through the fixing hole and is fixed to the bearing platform.

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