Motor testing fixture

Abstract

This application discloses a motor test fixture for testing the electrical performance of the motor rotor and stator. The motor test fixture includes a base, a rotor support mechanism, a drive mechanism, and a stator support mechanism. The rotor support mechanism includes a first bracket, a second bracket, a first ejector pin, and a second ejector pin. The first and second brackets are spaced apart on the base along a first direction. The first ejector pin is rotatably mounted on the first bracket, and the second ejector pin is rotatably mounted on the second bracket. The stator support mechanism is movable on the base along the first direction, and the drive mechanism drives the stator support mechanism to move along the first direction. With this configuration, using the motor test fixture of this application, rapid assembly of the motor rotor and stator can be achieved, improving the testing efficiency of the motor's electrical performance.

Description

Technical Field

[0001] This application relates to the field of testing equipment, and more particularly to a motor testing fixture. Background Technology

[0002] Typically, motors require testing of various electrical performance parameters during the development phase. However, conventional testing methods require the motor to be fully assembled before being placed on testing equipment. If any abnormalities are found during this process, the entire motor must be disassembled and adjusted, which wastes a significant amount of time and manpower.

[0003] Therefore, it is necessary to provide a motor testing fixture to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a motor testing fixture that enables rapid assembly of the rotor and stator, thereby improving testing efficiency.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A motor testing fixture, comprising:

[0007] Base;

[0008] The rotor support mechanism includes a first bracket, a second bracket, a first ejector pin, and a second ejector pin. The first bracket and the second bracket are spaced apart on the base along a first direction. The first ejector pin is rotatably mounted on the first bracket, and the second ejector pin is rotatably mounted on the second bracket.

[0009] Drive mechanism;

[0010] A stator support mechanism is movably disposed on the base along the first direction, and the drive mechanism drives the stator support mechanism to move along the first direction.

[0011] Furthermore, the first bracket is fixedly mounted on the base, and the second bracket is detachably mounted on the base. The first bracket and the second bracket are configured to support the rotor of the motor.

[0012] Furthermore, the first bracket includes a first support base and a first bearing disposed on the top of the first support base, the second bracket includes a second support base and a second bearing disposed on the top of the second support base, the rotor includes a rotating shaft, the first end of the rotating shaft passes through the first bearing and is connected to the first ejector pin, and the second ejector pin passes through the second bearing and is connected to the second end of the rotating shaft.

[0013] Furthermore, the rotor support mechanism also includes a pin support seat, which is disposed on the other side of the first support relative to the second bracket, and the first pin passes through the pin support seat and is connected to the first end.

[0014] Furthermore, the rotor support mechanism also includes a retaining ring, which is secured to the rotating shaft and fits against the first bearing.

[0015] Furthermore, the motor testing fixture also includes a slide rail and a slider slidably disposed on the slide rail. The slide rail extends along the first direction and is disposed on the outside of the first bracket. The stator support mechanism is connected to the slider.

[0016] Furthermore, the stator support mechanism includes a fixed plate and a stator support seat disposed on the fixed plate. The stator support seat and the first bracket are coaxially arranged along the first direction. The stator support seat has an installation space, and the stator is assembled in the installation space.

[0017] Furthermore, the driving mechanism is disposed on the base, and the driving mechanism includes a fixed seat, a lead screw, a lead screw nut, and a driving component. The two fixed seats are disposed on the base at intervals along the first direction. The two ends of the lead screw are respectively connected to the two fixed seats. The driving component is connected to one end of the lead screw. The lead screw nut is sleeved on the lead screw and is connected to the fixed plate.

[0018] Furthermore, the driving component is a turntable.

[0019] Furthermore, the drive mechanism also includes a brake wrench, which is disposed between the fixed base and the drive member, and is connected to the lead screw.

[0020] The beneficial effects of this application are as follows:

[0021] This application discloses a motor testing fixture, which rotatably mounts a first ejector pin on a first support and a second ejector pin on a second support. A drive mechanism drives a stator support mechanism to move along a first direction, enabling rapid assembly of the motor's rotor and stator to improve motor testing efficiency. Attached Figure Description

[0022] Figure 1 This is a perspective view of an embodiment of the motor testing fixture of this application;

[0023] Figure 2 yes Figure 1 A three-dimensional diagram from another angle;

[0024] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the base plate, rotor support mechanism, drive mechanism, and stator support mechanism;

[0025] Figure 4 yes Figure 1 3D exploded view of the base plate, first support, rotor, and first ejector pin;

[0026] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the middle stator support mechanism;

[0027] Figure 6 yes Figure 1 3D exploded view of the base plate, first support, rotor, first ejector pin, and second support.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Motor testing fixture; 200. Rotor; 210. Rotating shaft; 201. First end; 202. Second end; 220. Spline section; 300. Stator;

[0030] 1. Base;

[0031] 2. Rotor support mechanism; 21. First bracket; 211. First support base; 203. First mounting hole; 212. First bearing; 213. First base plate; 214. First reinforcing block; 22. Second bracket; 221. Second support base; 204. Second mounting hole; 222. Second bearing; 223. Second base plate; 224. Second reinforcing block; 225. Connecting piece; 226. Second retaining ring; 23. First ejector pin; 24. Second ejector pin; 25. Ejector pin support base; 26. Retaining ring; 251. Third reinforcing block; 205. First through hole;

[0032] 3. Drive mechanism; 31. Fixed base; 32. Lead screw; 33. Lead screw nut; 34. Drive component; 35. Brake wrench;

[0033] 4. Stator support mechanism; 41. Fixing plate; 42. Stator support base; 401. Installation space; 421. Fixing part; 402. Positioning hole; 422. Mounting part; 5. Slide rail; 6. Slider. Detailed Implementation

[0034] The exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with this application; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of this application as set forth in the claims.

[0035] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this application. The singular forms “a,” “the,” or “the” used in the description and claims of this application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this application do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "above," "below," and similar words appearing in this application are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" and similar words are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. If "several" appears in this application, it means two or more.

[0037] Please refer to Figures 1 to 6This application discloses an embodiment of a motor testing fixture 100 for testing the electrical performance of a motor rotor 200 and stator 300. The motor testing fixture 100 includes a base 1, a rotor support mechanism 2, a drive mechanism 3, and a stator support mechanism 4. The rotor support mechanism 2 includes a first bracket 21, a second bracket 22, a first ejector pin 23, and a second ejector pin 24. The first bracket 21 and the second bracket 22 are spaced apart on the base 1 along a first direction D1-D1. The first ejector pin 23 is rotatably mounted on the first bracket 21, and the second ejector pin 24 is rotatably mounted on the second bracket 22. The rotation shaft 210 of the rotor 200 includes a first end 201 and a second end 202. The first end 201 is rotatably connected to the first bracket 21 via the first ejector pin 23, and the second end 202 is rotatably connected to the second bracket 22 via the second ejector pin 24. The stator support mechanism 4 is movable along the first direction D1-D1 and mounted on the base 1. The stator 300 is installed inside the stator support mechanism 4, and the drive mechanism 3 drives the stator support mechanism 4 to move along the first direction D1-D1. The conventional structure of the motor includes a housing, a front cover, a rotating shaft 210, a rotor 200, a stator 300, and a rear cover. The rotating shaft 210 passes through the stator 300, the first end 201 of the bearing is connected to the front cover, the rotor 200 is fitted onto the outer circumference of the stator 300, and the second end 202 of the rotating shaft 210 is connected to the rear cover. Typically, when the motor is undergoing electrical performance testing, the parameters of the rotor 200 and stator 300 need to be adjusted in real time. Therefore, conventional testing requires disassembling the front and rear covers of the motor before the rotor 200 and stator 300 can be separated. By testing the motor using the motor test fixture 100 disclosed in this application, the rotor 200 and stator 300 can be quickly assembled, thereby improving testing efficiency.

[0038] Please refer to Figures 1 to 2The base 1 is a long, narrow plate. The long side of the base 1 is along a first direction D1-D1, and the wide side is along a second direction D2-D2. The first direction D1-D1 and the second direction D2-D2 are perpendicular. A first bracket 21 is fixedly mounted on the base 1, and a second bracket 22 is detachably fixed to the base 1. The first bracket 21 includes a first support seat 211 and a first bearing 212 disposed on the top of the first support seat 211. The second bracket 22 includes a second support seat 221 and a second bearing 222 disposed on the top of the second support seat 221. In one embodiment, the first support seat 211 and the second support seat 221 are spaced apart on the base 1 along the first direction D1-D1, and the first support seat 211 and the second support seat 221 have the same height, so that the rotor 200 remains balanced after being assembled on the first support seat 211 and the second support seat 221. The first end 201 of the rotating shaft 210 of the rotor 200 passes through the first bearing 212 and is connected to the first ejector pin 23. The second ejector pin 24 passes through the second bearing 222 and is connected to the second end 202 of the rotating shaft 210. The first ejector pin 23 and the second ejector pin 24 are coaxially arranged in the first direction D1-D1, and the first ejector pin 23 and the second ejector pin 24 rotate synchronously with the rotating shaft 210. In this way, the rotor 200 can be guaranteed to rotate along the axis of the rotating shaft 210, maintaining the stability of the rotor 200 at high speed.

[0039] Please refer to Figures 2 to 4 The first bracket 21 also includes a first base plate 213 and two first reinforcing blocks 214. The first base plate 213 is fixedly connected to the base 1 by screws. The first support seat 211 is vertically arranged on the top of the first base plate 213. The two first reinforcing blocks 214 are arranged at intervals along the second direction D2-D2. The first reinforcing blocks 214 are respectively connected to the first support seat 211 and the first base plate 213 to improve the overall structural strength of the first bracket 21.

[0040] Please refer to Figures 2 to 4 The second bracket 22 also includes a second base plate 223 and two second reinforcing blocks 224. The second base plate 223 is fixedly connected to the base 1 by screws, and the second support seat 221 is vertically disposed on the top of the second base plate 223. The two second reinforcing blocks 224 are spaced apart along the second direction D2-D2, and the second reinforcing blocks 224 are respectively connected to the second support seat 221 and the second base plate 223 to improve the overall structural strength of the second bracket 22.

[0041] Please refer to Figures 1 to 5The rotor support mechanism 2 includes a pin support 25, which is disposed on the other side of the first support 21 relative to the second bracket 22. The pin support 25, the first bracket 21, and the second bracket 22 are arranged in a straight line in the first direction D1-D1. In this embodiment, the first end 201 of the rotating shaft 210 is provided with a spline portion 220. When the bearing passes through the first bearing 212, the spline portion 220 is located between the first support 211 and the pin support 25. The top of the pin support 25 has a first through hole 205. The first pin 23 passes through the first through hole 205 and connects to the axis of the spline portion 220, and the first pin 23 rotates synchronously with respect to the spline portion 220. In this way, the rotor 200 cantilevered on the first support 211, which facilitates subsequent assembly with the stator 300. The rotor support mechanism 2 also includes a retaining ring 26, which is engaged with the rotating shaft 210 and fits against the first bearing 212 to restrict the axial movement of the rotating shaft 210 relative to the first bearing 212.

[0042] Please refer to Figures 2 to 4 A third reinforcing block 251 is provided on one side of the ejector pin support 25. The ejector pin support 25 is vertically set on the top of the base 1. The third reinforcing block 251 is fixedly connected to the ejector pin support 25 and the base 1 respectively, which improves the overall structural strength of the ejector pin support 25.

[0043] Please refer to Figures 2 to 4 as well as Figure 6 The first support 211 has a first mounting hole 203 at its top, and the first bearing 212 is embedded in the first mounting hole 203. The second support 221 has a second mounting hole 204 at its top, and the second bearing 222 is embedded in the second mounting hole 204. Specifically, the second bracket 22 also includes a second retaining spring 226 and a connector 225. The connector 225 passes through the second bearing 222, and the second end 202 of the rotating shaft 210 abuts against one end of the connector 225. The second pin 24 passes through the connector 225 and connects to the second end 202. This ensures the stability of the first bearing 212 and the second bearing 222.

[0044] Please refer to Figures 1 to 2 The motor test fixture 100 also includes a slide rail 5 and a slider 6 slidably mounted on the slide rail 5. The slide rail 5 extends along the first direction D1-D1 and is located on the outside of the first bracket 21. The stator support mechanism 4 is connected to the slider 6. By setting the slide rail 5, the stator support mechanism 4 can move smoothly along the first direction D1-D1 towards the rotor 200 for assembly with the rotor 200.

[0045] Please refer to Figure 2 as well as Figure 5The stator support mechanism 4 includes a fixed plate 41 and a stator support base 42 disposed on the fixed plate 41. The stator support base 42 and the first bracket 21 are coaxially arranged along the first direction D1-D1. In this embodiment, there are two slide rails 5, which are disposed on both sides of the first bracket 21 in the second direction D2-D2. Each slide rail 5 is provided with two sliders 6. This further improves the stability of the stator 300 moving on the stator support base 42.

[0046] In one embodiment, the stator support 42 has an installation space 401, within which the stator 300 is assembled. The stator support 42 includes a fixing part 421 and an installation part 422 integrally formed with the fixing part 421. The installation part 422 is a hollow cylinder, and the installation space 401 is formed at the center of the installation part 422, thus allowing the stator 300 to be placed within the installation part 422. The fixing part 421 is provided with a plurality of positioning holes 402, through which screws pass to be fixedly connected to the fixing plate 41, facilitating the adaptation of stator support 42 of different specifications, improving the adaptability of the motor test fixture 100, and reducing costs. In another embodiment, the stator support 42 includes a fixing part 421 and an installation part 422 integrally formed with the fixing part 421. The installation part 422 is Y-shaped, which also facilitates the placement of the stator 300 within the installation part 422; this is not a limitation.

[0047] Please refer to Figures 1 to 3 The drive mechanism 3 is mounted on the base 1. In one embodiment, the drive mechanism 3 is located on one side of the rotor support mechanism 2 and the stator support mechanism 4 in the second direction D2-D2. The drive mechanism 3 includes a fixed seat 31, a lead screw 32, a lead screw nut 33, and a drive member 34. Two fixed seats 31 are spaced apart on the base 1 along the first direction D1-D1. The two ends of the lead screw 32 are respectively connected to the two fixed seats 31. The drive member 34 is connected to one end of the lead screw 32. The lead screw nut 33 is sleeved on the lead screw 32 and connected to the fixed plate 41. The drive member 34 drives the lead screw 32 to rotate, causing the lead screw nut 33 to move along the lead screw 32, thereby driving the stator 300 to move towards the rotor 200, realizing the assembly of the stator 300 and the rotor 200. In one embodiment, the drive member 34 is a turntable. The turntable is rotated manually to drive the lead screw 32 to rotate synchronously. In another embodiment, the driving element 34 is a motor, and the driving end of the motor is connected to the lead screw 32 to drive the lead screw 32 to rotate.

[0048] In one embodiment, the drive mechanism 3 further includes a brake wrench 35, which is disposed between the fixed base 31 and the drive member 34 and is connected to the lead screw 32. After the stator 300 moves to the assembly position and is assembled with the rotor 200, the position of the lead screw nut 33 is fixed by locking the brake wrench 35, thereby ensuring the stability of the stator 300 position and improving testing efficiency.

[0049] In one embodiment, the lead screw 32 is a trapezoidal lead screw. The trapezoidal lead screw has a self-locking characteristic. By setting the trapezoidal lead screw, the impact force caused by excessive washing between the stator 300 and the rotor 200 is avoided from causing injury to the assembly personnel.

[0050] Motor testing methods:

[0051] Step 1: Provide a rotor 200. The first end 201 of the rotor rotating shaft 210 passes through the first bearing 212 of the first bracket 21. The first end 201 is provided with a spline portion 220, which is located between the first bracket 21 and the ejector pin support 25.

[0052] Step 2: Provide a retaining ring 26. Next to the first bearing 212, the retaining ring 26 is attached to the rotating shaft 210, so that the rotating shaft 210 is fixed to the first bearing 212, and the axial movement of the rotating shaft 210 is prevented during rotation.

[0053] Step 3: Provide a first ejector pin 23, which passes through the ejector pin support 25 and connects to the free end of the spline portion 220.

[0054] Step 4: Provide stator 300 and install stator 300 in the installation space 401 of stator support 42.

[0055] Step 5: Manually rotate the drive component 34. The drive component 34 drives the lead screw 32 to rotate. The lead screw 32 drives the lead screw nut 33 to move the stator support 42 towards the rotor 200 in the first direction D1-D1. When it reaches the assembly position, tighten the brake wrench 35 to fix the position of the stator 300 in the stator support 42, thus completing the assembly of the stator 300 and the rotor 200.

[0056] Step 6: Provide a second bracket 22 and set the second bracket 22 at the second end 202 of the rotor 200 rotating shaft 210. The second end 202 is connected to the second bearing 222. Provide a second ejector pin 24 and pass the second ejector pin 24 through the second bearing 222 and connect it to the second end 202.

[0057] Step 7: Provide power and test the electrical performance of rotor 200 and stator 300.

[0058] In summary, this application discloses a motor testing fixture 100, which rotatably mounts a first ejector pin 23 onto a first support 21 and a second ejector pin 24 onto a second support 22. A drive mechanism 3 drives a stator support mechanism 4 to move along a first direction D1-D1, enabling rapid assembly of the motor rotor 200 and stator 300, thereby improving motor testing efficiency.

[0059] The above embodiments are only for illustration and not for limiting the technical solutions described in this utility model. The understanding of this specification should be based on those skilled in the art. For example, the directional descriptions such as "front", "back", "left", "right", "up", and "down" are important. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this utility model. All technical solutions and improvements that do not depart from the spirit and scope of this utility model should be covered within the scope of the claims of this utility model.

Claims

1. A motor testing fixture, characterized in that, include: Base (1); The rotor support mechanism (2) includes a first bracket (21), a second bracket (22), a first ejector pin (23), and a second ejector pin (24). The first bracket (21) and the second bracket (22) are spaced apart on the base (1) along a first direction (D1-D1). The first ejector pin (23) is rotatably mounted on the first bracket (21), and the second ejector pin (24) is rotatably mounted on the second bracket (22). Drive mechanism (3); The stator support mechanism (4) is movably disposed on the base (1) along the first direction (D1-D1), and the drive mechanism (3) drives the stator support mechanism (4) to move along the first direction (D1-D1).

2. The motor testing fixture as described in claim 1, characterized in that: The first bracket (21) is fixedly mounted on the base (1), and the second bracket (22) is detachably mounted on the base (1). The first bracket (21) and the second bracket (22) are configured to support the rotor (200) of the motor.

3. The motor testing fixture as described in claim 1, characterized in that: The first bracket (21) includes a first support base (211) and a first bearing (212) disposed on the top of the first support base (211). The second bracket (22) includes a second support base (221) and a second bearing (222) disposed on the top of the second support base (221). The rotor (200) includes a rotating shaft (210). The first end (201) of the rotating shaft (210) passes through the first bearing (212) and is connected to the first ejector pin (23). The second ejector pin (24) of the rotor passes through the second bearing (222) and is connected to the second end (202) of the rotating shaft (210).

4. The motor testing fixture as described in claim 3, characterized in that: The rotor support mechanism (2) further includes a pin support seat (25), which is disposed on the other side of the first support (21) relative to the second bracket (22), and the first pin (23) passes through the pin support seat (25) and is connected to the first end (201).

5. The motor testing fixture as described in claim 4, characterized in that: The rotor support mechanism (2) further includes a retaining ring (26), which is engaged with the rotating shaft (210) and fits against the first bearing (212).

6. The motor testing fixture as described in claim 1, characterized in that: The motor test fixture also includes a slide rail (5) and a slider (6) slidably disposed on the slide rail (5). The slide rail (5) extends along the first direction (D1-D1) and is disposed on the outside of the first bracket (21). The stator support mechanism (4) is connected to the slider (6).

7. The motor testing fixture as described in claim 5, characterized in that: The stator support mechanism (4) includes a fixed plate (41) and a stator support seat (42) disposed on the fixed plate (41). The stator support seat (42) and the first bracket (21) are coaxially arranged along the first direction (D1-D1). The stator support seat (42) has an installation space (401), and the stator (300) is assembled in the installation space (401).

8. The motor testing fixture as described in claim 7, characterized in that: The driving mechanism (3) is disposed on the base (1). The driving mechanism (3) includes a fixed seat (31), a lead screw (32), a lead screw nut (33), and a driving component (34). The two fixed seats (31) are disposed on the base (1) at intervals along the first direction (D1-D1). The two ends of the lead screw (32) are respectively connected to the two fixed seats (31). The driving component (34) is connected to one end of the lead screw (32). The lead screw nut (33) is sleeved on the lead screw (32). The lead screw nut (33) is connected to the fixed plate (41).

9. The motor testing fixture as described in claim 8, characterized in that: The driving component (34) is a turntable.

10. The motor testing fixture as described in claim 8, characterized in that: The drive mechanism (3) further includes a brake wrench (35), which is disposed between the fixed seat (31) and the drive member (34), and is connected to the lead screw (32).

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