Motor vibration life testing device
By combining conductive pins with positioning components, the problems of motor welding damage and high prototype assembly costs were solved, enabling efficient and low-cost motor vibration life testing and improving the accuracy and efficiency of test data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN XIN KINGBRAND TECH DEV CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-01
AI Technical Summary
In existing motor testing solutions, high-temperature welding damages the spring clips, vibration causes them to loosen and fail, prototype assembly cycles are long and costly, and insufficient sample size affects the accuracy of test data.
The conductive pins contact the positive and negative contacts of the motor, and the positioning components hold them in place to avoid welding damage. Multiple motors are connected in parallel for testing, and a relay module is used to control the vibration, simplifying the prototype assembly process.
It avoids high-temperature damage during welding, reduces testing costs, increases sample size and the accuracy of test data, simplifies the operation process, and improves testing efficiency.
Smart Images
Figure CN224190196U_ABST
Abstract
Description
A motor vibration life testing device Technical Field
[0001] This application relates to the field of electromechanical equipment life testing technology, specifically to a motor vibration life testing device. Background Technology
[0002] Electromechanical equipment generally refers to mechanical, electrical, and electrical automation equipment, such as surface mount motors (SMT) motors. SMT vibration motors are small vibration motors that are directly mounted on a PCB board using SMT technology or manually. They are mainly used in various electronic devices for vibration feedback. They are small in size and easy to install, offering greater integration and suitability for use in space-constrained equipment. In motor manufacturing companies, motor life tests are typically conducted to understand motor reliability.
[0003] The motor has positive and negative contact springs. There are two existing testing methods: one is to directly test the individual motor, soldering the motor's positive and negative contact springs to the output terminals of a DC power supply, and then supplying the motor with the rated operating voltage and current to drive continuous vibration. The other method is to install the motor into a compatible prototype and control the motor's continuous / intermittent vibration using a motor testing APK installed in the prototype.
[0004] However, the existing testing methods have the following problems:
[0005] 1. When soldering individual motors, the high temperature of the soldering iron can easily damage the plastic positioning bones at the positive and negative contact springs of the motor, causing the springs to fall off and the test to be terminated; the high temperature is conducted through the positive and negative contact springs of the motor to the internal circuitry of the motor, causing damage to internal components and resulting in additional failures; when the motor vibrates, it cannot be effectively fixed, and the motor body shakes severely, leading to problems such as loose soldering or damage to the motor body.
[0006] 2. Installing the motor into a compatible prototype requires assembling a prototype that is compatible with the motor. However, the procurement and assembly cycle of prototype materials is long and the cost is high. It is not possible to verify the vibration life of the motor in a timely manner. Moreover, the sample size for testing will be affected by the number of prototypes, resulting in insufficient sample size and insufficient test data, which will affect the judgment of motor performance. Summary of the Invention
[0007] This application provides a motor vibration life testing device to solve the problem of motor failure caused by welding wiring, high temperature, and vibration.
[0008] According to this application, one embodiment provides a motor vibration life testing device, comprising:
[0009] The mounting bracket has a positioning slot for placing the motor under test.
[0010] A positioning element is provided on the mounting bracket to press the motor to be tested into the positioning groove from top to bottom;
[0011] Two conductive pins, each having an elastic portion at one end along its length, wherein the elastic portion at one end of the conductive pin is compressed and contacts the positive and negative electrode springs of the motor under test, respectively, and the other end of the conductive pin is connected to a wire.
[0012] as well as
[0013] The relay module has an input terminal and an output terminal. The input terminal is used to connect to a DC power supply, and the two wires are electrically connected to the output terminal to supply power to the motor under test, so that the DC current passes through the relay module to control the continuous or intermittent vibration of the motor under test.
[0014] In another embodiment, the bottom wall of the positioning groove is provided with two guide holes for the conductive pin to pass through, and the guide holes correspond to the positions of the positive and negative electrode springs of the motor under test.
[0015] In another embodiment, the wire is welded to the lower end of the conductive pin to achieve electrical connection.
[0016] In another embodiment, the lower end of the conductive pin is detachably connected to the wire via a connector.
[0017] In another embodiment, the connector includes a positioning seat, a conductive block, and a connecting sleeve. The positioning seat is hollow and has a limiting groove for engaging the wire. The connecting sleeve is threadedly connected to the positioning seat. The conductive block is disposed inside the connecting sleeve, with one end of the conductive block configured as an insertion end for inserting the wire, and the other end of the wire block configured as a mating end for contacting the conductive pin.
[0018] In another embodiment, the mating end surface is configured to mate with the end face of the conductive pin.
[0019] In another embodiment, a positioning ring is threaded onto the connecting sleeve, the positioning ring being used to prevent the conductive pin from disengaging from the connecting sleeve.
[0020] In another embodiment, a buffer layer is provided on the inner wall of the positioning groove, and the buffer layer is located between the inner wall of the positioning groove and the motor to be tested.
[0021] In another embodiment, the positioning slot is provided with at least one for placing multiple motors under test, the number of wire pins is set in accordance with the number of motors under test, and multiple sets of wire pins are connected to the motors under test in parallel to the wires.
[0022] In another embodiment, the positioning element is a clamping device, which is disposed on the mounting bracket, and the clamping end of the clamping device is provided with a soft rubber head.
[0023] According to the motor vibration life testing device of the above embodiment, the motor under test is placed in the positioning groove during use, and the motor under test is positioned on the periphery. At the same time, the positive and negative poles of the motor under test are respectively in contact with two conductive pins. The positive and negative poles can be led out through the conductive pins, avoiding direct welding on the motor body, thereby avoiding damage to the motor caused by the high temperature of welding. Furthermore, the positioning member holds the motor under test, so that the elastic part of the conductive pin is compressed, further strengthening the connection between the motor under test and the conductive pin, preventing the positive and negative pole springs from falling off, thereby solving the problem of loosening and failure caused by motor welding wiring, high temperature, and vibration. Attached Figure Description
[0024] Figure 1 is a schematic diagram of the overall structure of the motor vibration life test device.
[0025] Figure 2 is an exploded view of the motor mounting position in one embodiment;
[0026] Figure 3 is a structural schematic diagram of the connector in another embodiment.
[0027] Figure label:
[0028] 1. Mounting bracket; 11. Support plate; 12. Vertical plate; 13. Top plate; 14. Positioning groove; 15. Guide hole; 16. Buffer layer; 2. Positioning component; 21. Clamping device; 22. Soft rubber head; 3. Conductive pin; 4. Wire; 5. Relay module; 51. Input terminal; 52. Output terminal; 6. Connecting component; 61. Positioning seat; 62. Limiting groove; 63. Conductive block; 64. Connecting sleeve; 65. Positioning ring; 7. Motor under test. Detailed Implementation
[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.
[0030] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.
[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).
[0032] A surface-mount vibration motor is a small vibration motor that is directly mounted on a PCB board using SMT technology or manually. It has positive and negative contact springs. To understand the motor's reliability, a motor life test is typically performed. There are two existing testing methods: one is to directly test the individual motor, soldering the motor's positive and negative contact springs to the output terminals 52 of a DC power supply, and then supplying the motor with the rated operating voltage and current to drive continuous vibration. The other method is to install the motor in a compatible prototype and control the motor's continuous / intermittent vibration using a motor test APK installed in the prototype.
[0033] However, the existing testing methods have the following problems: 1. When soldering individual motors, the high temperature of the soldering iron can easily damage the plastic positioning bones at the positive and negative electrode springs of the motor, causing the springs to fall off and the test to be terminated; the high temperature is conducted through the positive and negative electrode springs to the internal circuitry of the motor, causing damage to internal components and leading to additional failures; when the motor vibrates, it cannot be effectively fixed, and the motor body shakes severely, leading to problems such as loose soldering or damage to the motor body. 2. Installing the motor into a compatible prototype requires assembling a prototype that is compatible with the motor, but the procurement and assembly cycle of prototype materials is long and the cost is high. It is not possible to verify the vibration life of the motor in a timely manner, and the sample size will be affected by the number of prototypes, resulting in insufficient sample size and insufficient test data, which affects the judgment of motor performance.
[0034] This application provides a motor vibration life testing device, which solves the problem of loosening and failure caused by motor welding wiring, high temperature, and vibration by fixing the motor under test 7 and making elastic contact with the positive and negative poles, and solves the problem of inaccurate test data caused by insufficient sample size by connecting multiple motors under test 7 in parallel.
[0035] Please refer to Figures 1 and 2. A motor vibration life testing device includes: a mounting frame 1 with a positioning groove 14 for placing a motor 7 under test; a positioning element 2 disposed on the mounting frame 1 for pressing the motor 7 under test into the positioning groove 14 from top to bottom; two conductive pins 3, each having an elastic portion at one end along its length, the elastic portion at one end of the conductive pin 3 being pressed and contacting the positive and negative electrode springs of the motor 7 under test respectively, and the other end of the conductive pin 3 being connected to a wire 4; and a relay module 5, which has an input terminal 51 and an output terminal 52, the input terminal 51 being used to connect to a DC power supply, and the two wires 4 being electrically connected to the output terminal 52 for supplying power to the motor 7 under test, so that the DC current controls the continuous or intermittent vibration of the motor 7 under test through the relay module 5.
[0036] During use, the motor under test 7 is placed in the positioning groove 14 and positioned on the periphery. At the same time, the positive and negative poles of the motor under test 7 are in contact with the two conductive pins 3 respectively. The positive and negative poles can be led out through the pins via the wires 4, avoiding direct welding on the motor body and thus preventing damage to the motor from the high temperature of welding. Furthermore, the positioning member 2 holds the motor under test 7, which compresses the elastic part of the conductive pins 3, further strengthening the connection between the motor under test 7 and the conductive pins 3, preventing the positive and negative pole springs from falling off, thereby solving the problem of loosening and failure caused by motor welding wiring, high temperature, and vibration.
[0037] Furthermore, please refer to Figures 1 and 2. In this embodiment, the positioning groove 14 is provided with at least one for placing multiple motors 7 to be tested. The number of wire pins 4 is set in accordance with the number of motors 7 to be tested, and multiple sets of wire pins 4 are connected to the motors 7 to be tested in parallel to the wires 4.
[0038] This application's testing device can simultaneously perform vibration tests on multiple motors under test 7. It only requires connecting the motors under test 7 in parallel with the conductive pin 3 to the output terminal 52 of the relay module 5. If any one or more motors under test 7 in the parallel circuit malfunction, it will not affect the testing of other motors, thereby reducing testing costs, increasing the test sample size and test data, and improving the speed of motor performance determination.
[0039] Further, please refer to Figures 1 and 2. The mounting frame 1 includes a support plate 11, a vertical plate 12, and a top plate 13. The support plate 11 serves as the main support. Two vertical plates 12 are provided and fixed to the support plate 11 by bolts or other means. The top plate 13 is located at the top of the vertical plate 12. The top plate 13 is horizontal and fixed to the vertical plate 12 by bolts or other means. Multiple positioning slots 14 are provided on the top plate 13. The bottom wall of the positioning slots 14 is provided with two guide holes 15 for the conductive pins 3 to pass through. The guide holes 15 penetrate the top plate 13 and correspond to the positions of the positive and negative springs of the motor under test 7. This allows the elastic part at the upper end of the conductive pin 3 to directly reach the positive and negative poles of the motor under test 7 through the guide holes 15, which facilitates the accuracy of positioning and power supply.
[0040] In this embodiment, multiple motors under test 7 are installed at different positions on the same mounting bracket 1. Furthermore, one motor under test 7 corresponds to one mounting bracket 1. By using the mounting bracket 1 independently, mutual vibration interference can be effectively avoided, while simultaneously handling the testing of a large number of samples. This method is efficient and cost-effective.
[0041] The mounting bracket 1 in this application can effectively prevent the motor from shaking when it vibrates, and avoid the positive and negative springs of the motor from falling off. After the motor 7 under test is installed in the positioning groove 14, the positive and negative springs can be led out through the conductive pins 3 below the limiting holes, avoiding direct welding on the motor body.
[0042] Furthermore, referring to Figures 1 and 2, the relay module 5 is implemented using a relay. A relay is an electrical device that controls the on / off state of an output circuit by changes in input quantities (current, voltage, temperature, etc.), using a small current to control a large current operation, thereby achieving automatic circuit adjustment, safety protection, and signal conversion. In this application, a DC power supply is connected to the input terminal 51, and the motor under test 7 is connected to the output terminal 52. By adjusting the on and off times of the circuit at the output terminal 52 through the relay module 5, the vibration and shutdown time of the motor under test 7 is controlled, thereby achieving the vibration life test of the motor under test 7.
[0043] Furthermore, in one embodiment, the upper end of the conductive pin 3 is limited and guided by the guide hole 15, and the elastic part of the upper end of the conductive pin 3 is pressed down by the force so that the conductive pin 3 has a downward force. The lower end of the conductive pin 3 is welded and fixed to the wire 4 to realize electrical connection.
[0044] In another embodiment, referring to Figures 1 and 3, the lower end of the conductive pin 3 is detachably connected to the wire 4 via a connector 6. Specifically, the connector 6 includes a positioning seat 61, a conductive block 63, and a connecting sleeve 64. The positioning seat 61 is hollow and has a limiting groove 62 for holding the wire 4. The connecting sleeve 64 is threadedly connected to the positioning seat 61. The conductive block 63 is disposed inside the connecting sleeve 64, and one end of the conductive block 63 is configured as an insertion end for inserting the wire 4, while the other end of the wire 4 is configured as a mating end that contacts the conductive pin 3.
[0045] In this embodiment, please refer to Figure 3. The positioning seat 61 is configured as an annular hollow structure with bottom support. By configuring the annular structure as two opposing arc-shaped structures with a gap, the gap between the two arc-shaped structures forms a limiting groove 62. The wire 4 is inserted into the limiting groove 62, that is, the wire 4 falls into the hollow space of the positioning seat 61. The connecting sleeve 64 is threadedly fixed to the positioning seat 61, that is, the wire 4 is fixed in the limiting groove 62. The insertion end of one end of the conductive block 63 is inserted into the wire 4 and contacts the wire core to conduct electricity, sending the current to the conductive pin 3 that contacts the docking end.
[0046] Please refer to Figures 1 and 3. The conductive pin 3 adopts a spring pin, which can be flush at the bottom and elastic at the top, or elastic at both ends. The mating end surface is set to be flush or concave with the end face of the conductive pin 3, and the connecting sleeve 64 allows the bottom end of the conductive pin 3 to pass through and serve as the wire 4 and limit.
[0047] Please refer to Figure 3. Optionally, a positioning ring 65 is threadedly installed on the connecting sleeve 64. The positioning ring 65 is used to prevent the conductive pin 3 from disengaging from the connecting sleeve 64. The upper end of the connecting sleeve 64 can be configured as multiple arc-shaped claws. The connecting sleeve 64 has external threads that engage with the internal threads of the positioning ring 65. After the lower end of the conductive pin 3 is inserted into the connecting sleeve 64 and pressed against it, the positioning ring 65 is screwed on to lock and position it.
[0048] Alternatively, other detachable wiring methods can be used between the conductive pin 3 and the wire 4 to improve installation efficiency and the secondary use of the device.
[0049] Furthermore, please refer to Figure 2. A buffer layer 16 is provided on the inner wall of the positioning groove 14. The buffer layer 16 is pasted on the inner wall of the positioning groove 14 and is located between the motor under test and the inner wall of the positioning groove 14. The buffer layer 16 is specifically made of buffer foam. In other embodiments, other materials that wrap the motor under test to buffer vibration can also be used.
[0050] Furthermore, referring to Figure 2, the positioning component 2 adopts a clamping device 21, which is mounted on the mounting bracket 1. This application uses a manual clamping device 21, and the clamping end of the clamping device 21 is set as a soft rubber head 22, which can be made of rubber or other soft materials. By adding cushioning foam, this application, in conjunction with the soft rubber head 22 of the clamping device 21, can effectively achieve vibration isolation, eliminate the impact of collision between the motor under test 7 and the mounting bracket 1 during vibration, and effectively eliminate the interference caused by the vibration itself.
[0051] The motor vibration life testing device of this application requires no welding, no installation, no waiting, is not limited by the sample size, does not introduce new uncertainties, has high accuracy, can simultaneously verify multiple samples, is simple to operate, easy to maintain, low in cost, and highly efficient.
[0052] The usage process of the motor vibration life testing device disclosed in this application is as follows:
[0053] The buffer layer 16 is attached to the corresponding positioning slot 14 of the mounting bracket 1 for the motor 7 under test, and then the motor 7 under test is placed in.
[0054] The upper end of the conductive pin 3 is inserted into the guide hole 15, and the positive and negative electrode springs of the motor under test 7 are in contact with the two pins below the positioning groove 14.
[0055] The pressure clamp 21 is pressed down, and the soft rubber head 22 of the pressure clamp 21 presses the motor 7 under test from top to bottom to ensure that the positive and negative springs of the motor 7 under test are tightly connected to the ejector pin.
[0056] Two wires 4 are led out from the output terminal 52 of the relay module 5. One wire 4 is soldered or detachably electrically connected to a conductive pin 3 as the positive terminal, and the other wire 4 is soldered or detachably electrically connected to another conductive pin 3 as the negative terminal to supply power to the motor 7 under test.
[0057] Repeat the above steps to connect multiple mounting brackets 1 and conductive pins 3 containing the motors under test 7 to the wires 4, so that multiple motors under test 7 are connected to the circuit in parallel.
[0058] A DC power supply is connected to the input terminal 51 of the relay module 5;
[0059] Turn on the DC power supply, set the rated voltage and current for the motor 7 under test, and simultaneously use the rated voltage and current to power the relay module 5.
[0060] By adjusting the on and off times of the output circuit 52 through the relay module 5, the vibration and stop times of the motor under test 7 can be controlled, thereby realizing the vibration life test of the motor under test 7.
[0061] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.
Claims
1. A motor vibration life testing device, characterized in that, include: Mounting bracket (1) with a positioning groove (14) for placing the motor under test (7); positioning element (2) on the mounting bracket (1) for pressing the motor under test (7) into the positioning groove (14) from top to bottom; two conductive pins (3) with an elastic part at one end along the length direction, the elastic part at one end of the conductive pin (3) being pressed and contacting the positive and negative springs of the motor under test (7) respectively, and the other end of the conductive pin (3) being connected to a wire (4); and a relay module (5) with an input end (51) and an output end (52), the input end (51) being connected to a DC power supply, and the two wires (4) being electrically connected to the output end (52) for supplying power to the motor under test (7) so that the DC current passes through the relay module (5) to control the continuous or intermittent vibration of the motor under test (7).
2. The motor vibration life testing device as described in claim 1, characterized in that, The bottom wall of the positioning groove (14) is provided with two guide holes (15) for the conductive pin (3) to pass through, and the guide holes (15) correspond to the positions of the positive and negative springs of the motor (7) to be tested.
3. The motor vibration life testing device as described in claim 1, characterized in that, The wire (4) is welded and fixed to the lower end of the conductive pin (3) to achieve electrical connection.
4. The motor vibration life testing device as described in claim 1, characterized in that, The lower end of the conductive pin (3) is detachably connected to the wire (4) via a connector (6).
5. The motor vibration life testing device as described in claim 4, characterized in that, The connector (6) includes a positioning seat (61), a conductive block (63), and a connecting sleeve (64). The positioning seat (61) is hollow and has a limiting groove (62) for locking the wire (4). The connecting sleeve (64) is threadedly connected to the positioning seat (61). The conductive block (63) is disposed inside the connecting sleeve (64), and one end of the conductive block (63) is configured as an insertion end for inserting the wire (4), and the other end of the wire (4) is configured as a mating end that contacts the conductive pin (3).
6. The motor vibration life testing device as described in claim 5, characterized in that, The mating end surface is configured to mate with the end face of the conductive pin (3).
7. The motor vibration life testing device as described in claim 5, characterized in that, A positioning ring (65) is threaded onto the connecting sleeve (64), and the positioning ring (65) is used to prevent the conductive pin (3) from disengaging from the connecting sleeve (64).
8. The motor vibration life testing device as described in claim 1, characterized in that, The inner wall of the positioning groove (14) is provided with a buffer layer (16), which is located between the inner wall of the positioning groove (14) and the motor to be tested.
9. The motor vibration life testing device according to any one of claims 1-8, characterized in that, The positioning groove (14) is provided with at least one for placing multiple motors (7) to be tested. The number of the wire (4) pins is set in accordance with the number of motors (7) to be tested, and multiple sets of the wire (4) pins are connected to the motors (7) to be tested in parallel to the wire (4).
10. The motor vibration life testing device as described in claim 1, characterized in that, The positioning component (2) adopts a clamping device (21), which is mounted on the mounting bracket (1), and the clamping end of the clamping device (21) is provided with a soft rubber head (22).