Motor test fixture and test device for automobile seat driver

Abstract

The utility model discloses a motor test fixture and a test device for an automobile seat driver, which are characterized in that the motor test fixture comprises a cylinder, a connecting plate, a positioning member and two conducting rods, the top of the connecting plate is connected with an output shaft at the bottom of the cylinder, the positioning member is installed on the connecting plate, and the two conducting rods are connected with the connecting plate. The two conducting rods are mounted on the positioning piece; a wire connector is arranged at the top of each conducting rod; the positioning piece is installed on the front side wall of the connecting plate, two through holes are formed in the positioning piece at intervals, the middle of each conducting rod is movably inserted into the corresponding through hole, and the top and the bottom of each conducting rod are arranged above and below the positioning piece respectively; an upper annular head and a lower annular head are respectively arranged on the conducting rod above and below the positioning piece, a spring is sleeved outside the conducting rod, and two ends of the spring are respectively propped against the top surface of the lower annular head and the bottom surface of the positioning piece. According to the utility model, the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat drive manufacturing and processing, and more particularly to a motor testing fixture and testing device for automotive seat drives. Background Technology

[0002] Car seats provide drivers and passengers with a convenient, comfortable, and safe driving and riding position. There are two main types of car seats: manual and electric. Electric adjustable car seats primarily use actuators to move the seat or rotate the backrest angle.

[0003] The motor is the main power component in the drive. After the motor is manufactured, it is tested to ensure it functions properly. The conventional testing method involves placing the motor on a mounting bracket and connecting the pre-installed wiring and corresponding interfaces to test its functionality. This method is relatively inefficient, and if the motor fails to meet the requirements, it must be discarded, resulting in waste. Summary of the Invention

[0004] The purpose of this invention is to provide a test fixture and test device for a motor used in automotive seat drives, which improves testing efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a test fixture for a motor of an automotive seat driver, comprising a cylinder, a connecting plate, a positioning component, and two conductive rods. The top of the connecting plate is connected to the output shaft at the bottom of the cylinder, the positioning component is mounted on the connecting plate, and the two conductive rods are mounted on the positioning component.

[0006] Each of the conductive rods is provided with an electrical wire connector at its top;

[0007] The positioning component is installed on the front side wall of the connecting plate. The positioning component has two through holes spaced apart. The middle part of each conductive rod is movably inserted into the through hole. The top and bottom of the conductive rod are respectively located above and below the positioning component.

[0008] The conductive rod has an upper annular head and a lower annular head on its outer surface. The upper annular head and the lower annular head are respectively located above and below the positioning member. A spring is sleeved on the outside of the conductive rod, and the two ends of the spring abut against the top surface of the lower annular head and the bottom surface of the positioning member, respectively.

[0009] In the above technical solution, the positioning element is made of insulating material.

[0010] In the above technical solution, the positioning component includes a rear positioning plate, a front positioning plate, and two limiting sleeves. The rear positioning plate is installed on the front side wall of the connecting plate. The length of the limiting sleeve is greater than the height of the front and rear positioning plates. The front positioning plate is located in front of the rear positioning plate. The front and rear positioning plates are connected by bolts, and a clamping gap is provided between the front and rear positioning plates. The front and rear positioning plates limit the limiting sleeves within the clamping gap.

[0011] Each of the aforementioned through holes is respectively disposed within one of the aforementioned limiting sleeves.

[0012] In the above technical solution, the two ends of the through hole are respectively connected to the top and bottom of the limiting sleeve, the two ends of the limiting sleeve are respectively set above and below the clamping distance, and each conductive rod is movably inserted into the through hole of a limiting sleeve.

[0013] In the above technical solution, the upper annular head is disposed above the limiting sleeve, the lower annular head and the spring are disposed below the limiting sleeve, and the top of the spring abuts against the bottom surface of the limiting sleeve.

[0014] In the above technical solution, the cross-section of the limiting sleeve is a square structure with internal holes.

[0015] In the above technical solution, the rear side wall of the front positioning plate is provided with multiple slots spaced from left to right, and the front side of each limiting sleeve is engaged in the slot.

[0016] In the above technical solution, the front sidewall of the limiting sleeve is provided with an upper convex plate and a lower convex plate. The bottom surface of the upper convex plate abuts against the top surface of the front positioning plate, and the top surface of the lower convex plate abuts against the bottom surface of the front positioning plate.

[0017] This utility model also provides a motor testing device for an automotive seat drive, including the aforementioned motor testing fixture for an automotive seat drive, and a motor tester, wherein the motor tester is connected via wire connectors distributed at the top of the two conductive rods.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] 1. In this utility model, a cylinder is used to drive the connecting plate, positioning component and conductive rod to move up and down. By moving the conductive rod down and making rapid contact with the two electrodes of the motor, rapid testing can be performed through the contact between the conductive rod and the electrodes of the motor during the intermittent movement of the motor, which effectively improves the testing efficiency.

[0020] 2. In this utility model, rapid testing is carried out before the motor is fully assembled. If a defective product is found, subsequent assembly can be discontinued, reducing material waste and lowering costs.

[0021] 3. The distance between the two conductive rods in this utility model is adjustable, making it suitable for testing different motors and expanding its applicability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0023] Figure 2 This is a cross-sectional view of the connection between the conductive rod and the positioning component in Embodiment 1 of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the conductive rod and positioning component in Embodiment 1 of this utility model.

[0025] The components include: 1. Cylinder; 2. Connecting plate; 3. Positioning component; 4. Conductive rod; 5. Wire connector; 6. Through hole; 7. Upper annular head; 8. Lower annular head; 9. Spring; 10. Rear positioning plate; 11. Front positioning plate; 12. Limiting sleeve; 13. Bolt; 14. Clamping spacing; 15. Slot; 16. Upper convex plate; 17. Lower convex plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Example 1: See Figure 1-3 As shown, a test fixture for a motor used in an automotive seat drive includes a cylinder 1, a connecting plate 2, a positioning component 3, and two conductive rods 4. The top of the connecting plate 2 is connected to the output shaft at the bottom of the cylinder 1. The positioning component 3 is mounted on the connecting plate 2, and the two conductive rods 4 are mounted on the positioning component 3.

[0028] Each of the conductive rods 4 is provided with an electrical wire connector 5 at its top;

[0029] The positioning component 3 is installed on the front side wall of the connecting plate 2. The positioning component 3 has two through holes 6 spaced apart. The middle part of each conductive rod 4 is movably inserted into the through hole 6. The top and bottom of the conductive rod 4 are respectively located above and below the positioning component 3.

[0030] The conductive rod 4 has an upper annular head 7 and a lower annular head 8 on its outer surface. The upper annular head 7 and the lower annular head 8 are respectively located above and below the positioning member 3. A spring 9 is sleeved on the outside of the conductive rod 4. The two ends of the spring 9 abut against the top surface of the lower annular head 8 and the bottom surface of the positioning member 3, respectively.

[0031] This utility model also provides a motor testing device for an automotive seat drive, including the aforementioned motor testing fixture for an automotive seat drive, and a motor tester, wherein the motor tester is connected via wire connectors distributed at the top of the two conductive rods.

[0032] In this embodiment, the test fixture is installed on the motor assembly line. During the conveying process, after the motor electrodes are assembled, it passes under the test fixture. Each motor pauses for a certain period of time when it reaches the test fixture. While the motor is paused, the output shaft of the cylinder extends, causing the connecting plate, positioning component, and conductive rod to move downwards. The bottoms of the two conductive rods contact the two electrodes of the motor respectively. Then, the positioning component continues to move downwards a certain distance, compressing the spring until the output shaft of the cylinder is fully extended. After a predetermined pause, the output shaft of the cylinder retracts, causing the connecting plate, positioning component, and conductive rod to move upwards, disengaging from the motor electrodes. Simultaneously, the motor is sent away, and the next motor is sent under the test fixture for testing again, thus repeating the cycle. When the two conductive rods contact the motor electrodes, since the conductive rods are connected to the motor tester via wiring, the motor tester quickly tests the motor to determine if it can operate normally. The motor tester connects to the controller of the entire electrode assembly line, transmitting test data to the controller. If a motor fails the test, the rejection device at the back end will remove the defective motor, preventing further assembly and reducing material waste and costs. Furthermore, the motor undergoes rapid testing during the transport process between two assembly steps, eliminating the need for separate testing and improving testing efficiency.

[0033] In this embodiment, a spring, an upper annular head, and a lower annular head are provided. With the spring extended, the upper annular head rests against the top of the positioning component. When the cylinder output shaft extends and moves the positioning component downwards, the contact force between the conductive rod and the motor electrode is small due to the spring, resulting in a flexible contact and preventing damage to the motor electrode. Furthermore, the cylinder can move the positioning component up and down relatively quickly without increasing the detection time or affecting the normal assembly efficiency of the motor. As the positioning component continues to move downwards, the spring is compressed, using its elasticity to push the conductive rod firmly against the motor electrode, ensuring stable contact and thus guaranteeing detection accuracy and stability. When the positioning component moves upwards, the spring first returns to its original position, and the conductive rod remains in contact with the motor electrode until the upper annular head contacts the positioning component. Only then does the conductive rod disengage from the motor, extending the contact time between the conductive rod and the motor, maximizing the detection time, and improving the detection effect.

[0034] The positioning component is made of insulating material. This ensures that the conductive rod only supplies power to the motor and prevents short circuits.

[0035] See Figure 1-3 As shown, the positioning component 3 includes a rear positioning plate 10, a front positioning plate 11, and two limiting sleeves 12. The rear positioning plate 10 is installed on the front side wall of the connecting plate 2. The length of the limiting sleeve 12 is greater than the height of the front positioning plate 11 and the rear positioning plate 10. The front positioning plate 11 is located in front of the rear positioning plate 10. The front positioning plate 11 and the rear positioning plate 10 are connected by bolts 13, and a clamping gap 14 is provided between the front positioning plate 11 and the rear positioning plate 10. The front positioning plate 11 and the rear positioning plate 10 limit the limiting sleeve 13 within the clamping gap 14.

[0036] Each of the through holes 6 is respectively disposed within one of the limiting sleeves 12.

[0037] The two ends of the through hole 6 are respectively connected to the top and bottom of the limiting sleeve 12. The two ends of the limiting sleeve 12 are respectively located above and below the clamping distance 14. Each conductive rod 4 is movably inserted into the through hole 6 of a limiting sleeve 12.

[0038] The upper annular head 7 is disposed above the limiting sleeve 12, the lower annular head 8 and the spring 9 are disposed below the limiting sleeve 12, and the top of the spring 9 abuts against the bottom surface of the limiting sleeve 12.

[0039] In this embodiment, a separate limiting sleeve is provided, and the limiting sleeve is clamped by a front positioning plate and a rear positioning plate. The conductive rod is movably connected to the limiting sleeve. The size of the conductive rod and the distance between the two conductive rods vary depending on the size of the motor. Therefore, limiting sleeves with different through-hole sizes can be replaced, and the distance between the two limiting sleeves can be adjusted to suit the testing of products of different sizes, thus improving the applicability. When adjusting the distance between the two limiting sleeves, the bolts are loosened so that the distance between the front and rear positioning plates is greater than the thickness of the limiting sleeve. Then, the distance between the two limiting sleeves and their position relative to the positioning components are adjusted. After adjustment, the bolts are tightened, and the two limiting sleeves are clamped by the front and rear positioning plates to limit and fix them. Specifically, a bolt is provided on each of the left and right sides of the front positioning plate, and the rear end of the bolt passes through the front and rear positioning plates and is screwed on. The two limiting sleeves are positioned between the two bolts.

[0040] See Figure 3As shown, the limiting sleeve 12 has a square cross-section with internal holes. The limiting sleeve has a square cross-section, and after being limited by the front and rear positioning plates, it will not rotate between the front top and the rear positioning plates, allowing the limiting sleeve to be stably positioned between the front and rear positioning plates.

[0041] See Figure 3 As shown, the rear side wall of the front positioning plate 11 is provided with a plurality of slots 15 spaced from left to right, and the front side of each limiting sleeve 12 is engaged in the slot 15.

[0042] The slot design also prevents the limiting sleeve from moving left and right between the front and rear positioning plates, ensuring a fixed distance between the two limiting sleeves.

[0043] See Figure 2 , 3 As shown, the front sidewall of the limiting sleeve 12 is provided with an upper protrusion 16 and a lower protrusion 17. The bottom surface of the upper protrusion 16 abuts against the top surface of the front positioning plate 11, and the top surface of the lower protrusion 17 abuts against the bottom surface of the front positioning plate 11.

[0044] After the limiting sleeve is clamped by the front and rear positioning plates, the cylinder frequently drives the positioning component to move up and down, causing the conductive rod to contact the motor for testing. Therefore, the limiting sleeve may move up and down relative to the positioning component (the movement distance will be relatively small). This may result in one guide rod contacting the motor electrode while the other guide rod does not contact the motor electrode or has poor contact, affecting the stability of the test. Therefore, the upper and lower convex plates can limit the up and down movement of the limiting sleeve relative to the positioning component, ensuring the stability and accuracy of the test.

Claims

1. A test fixture for a motor used in an automotive seat actuator, characterized in that: It includes a cylinder, a connecting plate, a positioning component, and two conductive rods. The top of the connecting plate is connected to the output shaft at the bottom of the cylinder. The positioning component is mounted on the connecting plate, and the two conductive rods are mounted on the positioning component. Each of the conductive rods is provided with an electrical wire connector at its top; The positioning component is installed on the front side wall of the connecting plate. The positioning component has two through holes spaced apart. The middle part of each conductive rod is movably inserted into the through hole. The top and bottom of the conductive rod are respectively located above and below the positioning component. The conductive rod has an upper annular head and a lower annular head on its outer surface. The upper annular head and the lower annular head are respectively located above and below the positioning member. A spring is sleeved on the outside of the conductive rod, and the two ends of the spring abut against the top surface of the lower annular head and the bottom surface of the positioning member, respectively.

2. The test fixture for the motor of the automotive seat drive according to claim 1, characterized in that: The positioning element is made of insulating material.

3. The test fixture for the motor of the automotive seat drive according to claim 1, characterized in that: The positioning component includes a rear positioning plate, a front positioning plate, and two limiting sleeves. The rear positioning plate is installed on the front side wall of the connecting plate. The length of the limiting sleeve is greater than the height of the front and rear positioning plates. The front positioning plate is located in front of the rear positioning plate. The front and rear positioning plates are connected by bolts, and a clamping gap is provided between the front and rear positioning plates. The front and rear positioning plates limit the limiting sleeves within the clamping gap. Each of the aforementioned through holes is respectively disposed within one of the aforementioned limiting sleeves.

4. The test fixture for the motor of the automotive seat drive according to claim 3, characterized in that: The two ends of the through hole are respectively connected to the top and bottom of the limiting sleeve, and the two ends of the limiting sleeve are respectively set above and below the clamping distance. Each conductive rod is movably inserted into the through hole of a limiting sleeve.

5. The test fixture for the motor of an automotive seat drive according to claim 4, characterized in that: The upper annular head is positioned above the limiting sleeve, and the lower annular head and spring are positioned below the limiting sleeve, with the top of the spring abutting against the bottom surface of the limiting sleeve.

6. The test fixture for the motor of an automotive seat drive according to claim 3, characterized in that: The cross-section of the limiting sleeve is a square structure with internal holes.

7. The test fixture for the motor of an automotive seat drive according to claim 3, characterized in that: The rear side wall of the front positioning plate is provided with multiple slots spaced from left to right, and the front side of each limiting sleeve is engaged in the slot.

8. The test fixture for the motor of an automotive seat drive according to claim 3, characterized in that: The front sidewall of the limiting sleeve is provided with an upper convex plate and a lower convex plate. The bottom surface of the upper convex plate abuts against the top surface of the front positioning plate, and the top surface of the lower convex plate abuts against the bottom surface of the front positioning plate.

9. A testing device for a motor used in an automotive seat actuator, characterized in that: The device includes a motor test fixture for an automotive seat drive as described in any one of claims 1-8, and also includes a motor tester connected via wire connectors with wiring distributed at the top of the two conductive rods.

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