Simple multi-path EPS motor stalling test fixture
By designing a simple multi-channel EPS motor stall test fixture, and using a partition plate and fixing mechanism to stabilize the motor, the problems of large size, high cost and cumbersome operation of traditional test equipment are solved, and efficient and accurate testing of multi-channel motors is achieved.
Patent Information
- Application Number
- CN202423205926.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In traditional EPS testing, existing technologies struggle to efficiently and stably test multiple motors simultaneously. This results in bulky testing equipment, high costs, cumbersome operation, and inaccurate test results.
A simple multi-channel EPS motor stall test fixture was designed, including a housing, a partition plate, a fixing mechanism, and a multi-claw limiting hinge block. The housing is divided into multiple installation chambers by the partition plate, the motor is stabilized by the fixing mechanism, and the rotation of the motor output shaft is restricted by the multi-claw limiting hinge block, so as to realize the independent placement and stable installation of multiple motors.
It improves testing efficiency, reduces interference, ensures testing accuracy and stability, lowers costs, and meets the needs of modern automobile production and R&D for batch and efficient testing of motors.
Smart Images
Figure CN223664741U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor test equipment technical field especially relates to a simple and easy multichannel EPS motor locked-rotor test fixture. BACKGROUND
[0002] In the EPS electric power steering working process, the motor rotation provides the required steering assist current, at this time the motor itself will also heat up, the greater the motor current, the greater the motor heating. If the motor heats up for a long time, the motor will be damaged or affect the motor life. Therefore, it is necessary to study the temperature rise of the motor, and then the EPS controller executes the protection strategy according to the temperature rise. In the whole vehicle, the steering wheel is dead in the original position for a long time, at this time the motor is in the locked-rotor state, the motor current is the largest, and the motor temperature rise is the fastest, so it is necessary to test and study under the motor locked-rotor working condition.
[0003] At present, in the traditional EPS motor locked-rotor test process, a complete set of EPS assembly is usually used, the motor output shaft is fixed by a fixing part, the steering wheel is turned and held continuously, at this time the working condition of the motor locked-rotor is simulated, and the motor temperature rise can be tested, but this method needs a complete set of EPS assembly, output shaft fixing part and steering wheel, the structure is large and complicated, the cost is high, the tester needs to turn the steering wheel for a long time, and the motor is not fixed stably, displacement deviation is easy to occur in the test process, the test data accuracy is affected, moreover, the traditional method is difficult to test multiple motors at the same time, and cannot meet the demand of motor batch and efficient test in modern automobile production and research and development, therefore, the utility model provides a simple and easy multichannel EPS motor locked-rotor test fixture to solve the above problems. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the deficiency in the above background art, and provides a simple and easy multichannel EPS motor locked-rotor test fixture.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme:
[0006] A simple and easy multichannel EPS motor locked-rotor test fixture, which comprises a shell and multiple EPS motor bodies, multiple partition plates are fixedly installed on the inner side wall of the shell and divide the shell into multiple installation chambers, multiple pawl limiting hinge blocks are fixedly installed on the output shaft of the EPS motor body, and a fixing mechanism for fixing the EPS motor body and the output shaft thereof is arranged on the shell.
[0007] The fixing mechanism includes two threaded sleeves fixedly installed on the bottom of the installation chamber. A detachable fixing bolt is threaded onto the inner side wall of the threaded sleeve. A through hole is provided on the side plate of the EPS motor body. The outer side wall of the fixing bolt and the inner side wall of the through hole are slidably connected. The same limiting plate is slidably sleeved on the outer side wall of the two fixing bolts located in the installation chamber. The limiting plate can be embedded in a multi-claw limiting hinge block. A limiting nut that can fasten the side plate of the EPS motor body and the limiting plate is threaded onto the fixing bolt.
[0008] Preferably, the top of the housing has multiple sliding holes, and the outer wall of the fixing bolt and the inner wall of the sliding hole are slidably connected.
[0009] Preferably, the housing has multiple open slots, and the open slots are connected to the installation chamber.
[0010] Preferably, the output shaft of the EPS motor body and the multi-claw limiting hinge block are coaxially arranged.
[0011] Preferably, the top of the limiting plate has two limiting holes, which are symmetrically arranged on the top of the limiting plate, and the outer wall of the fixing bolt and the inner wall of the limiting hole are slidably connected.
[0012] Preferably, the outer wall of the fixing bolt has two threaded grooves, the lower threaded groove is threaded to the inner wall of the threaded sleeve, and the lower threaded groove is threaded to the inner wall of the limiting nut.
[0013] Preferably, the distance between two adjacent installation chambers is the same.
[0014] The beneficial effects of this utility model are as follows:
[0015] Through the interaction of the housing, EPS motor body, mounting chamber, multi-claw limiting hinge block, and fixing mechanism, the mounting chamber formed by multiple partition plates allows for the independent placement of multiple motors, improving testing efficiency and reducing interference. The mounting chamber can test multiple EPS motors simultaneously, significantly increasing test throughput and saving time and costs. The unique fixing mechanism ensures stable motor installation and convenient loading and unloading, guaranteeing accurate testing. The sliding hole auxiliary bolts provide precise positioning, the open bayonet facilitates operation, the coaxial and limiting design enhances stability, and the evenly spaced mounting chambers promote standardized production, effectively advancing the efficient development of EPS motor testing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a simple multi-channel EPS motor stall test fixture proposed in this utility model;
[0017] Figure 2This is a side view of a simple multi-channel EPS motor stall test fixture proposed in this utility model;
[0018] Figure 3 This is a top view of a simple multi-channel EPS motor stall test fixture proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the limiting plate in a simple multi-channel EPS motor stall test fixture proposed in this utility model;
[0020] Figure 5 This is a schematic diagram of the multi-claw limiting hinge block in a simple multi-channel EPS motor stall test fixture proposed in this utility model.
[0021] In the diagram: 1. Housing; 2. EPS motor body; 3. Partition plate; 4. Installation chamber; 5. Multi-claw limiting hinge block; 6. Threaded sleeve; 7. Fixing bolt; 8. Limiting plate; 9. Limiting nut; 10. Open bayonet. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Reference Figures 1-5 A simple multi-channel EPS motor stall test fixture includes a housing 1 and multiple EPS motor bodies 2. Multiple partition plates 3 are fixedly installed on the inner side wall of the housing 1, dividing the housing 1 into multiple installation chambers 4. A multi-claw limiting hinge block 5 is fixedly installed on the output shaft of the EPS motor body 2.
[0024] To further explain, by setting multiple partition plates 3 inside the housing 1 to form multiple installation chambers 4, multiple EPS motor bodies 2 can be independently installed, which facilitates simultaneous multi-channel testing, improves testing efficiency and reduces mutual interference.
[0025] like Figure 1 and Figure 3 As shown, the housing 1 has multiple open slots 10, and the open slots 10 and the installation chamber 4 are connected.
[0026] To further explain, this design facilitates the insertion of the EPS motor body 2 into the mounting chamber 4 through the open bayonet 10, simplifying the motor installation steps and improving assembly efficiency. It also makes it easier to inspect and maintain the motor and related connecting components during testing, or to perform wiring connections according to testing requirements, thereby enhancing the operability and flexibility of the test fixture.
[0027] like Figure 1 and Figure 2As shown, the distance between two adjacent installation chambers 4 is the same.
[0028] To further explain, this allows for a more regular internal structure of the test fixture, facilitating standardized processing and assembly during manufacturing, thereby improving production efficiency and product quality consistency.
[0029] like Figure 1 As shown, the housing 1 is provided with a fixing mechanism to fix the EPS motor body 2 and its output shaft; the fixing mechanism includes two threaded sleeves 6 fixedly installed on the bottom of the installation chamber 4, and a detachable fixing bolt 7 is threaded on the inner side wall of the threaded sleeve 6. A through hole is opened on the side plate of the EPS motor body 2. The outer side wall of the fixing bolt 7 and the inner side wall of the through hole are slidably connected. The same limiting plate 8 is slidably sleeved on the outer side wall of the two fixing bolts 7 located in the installation chamber 4. The limiting plate 8 can be embedded in the multi-claw limiting hinge block 5. A limiting nut 9 that can fasten the side plate of the EPS motor body 2 and the limiting plate 8 is threaded on the fixing bolt 7.
[0030] To further explain, the threaded engagement between the threaded sleeve 6 and the fixing bolt 7 in the fixing mechanism, along with the through hole in the side plate of the EPS motor body 2 and the design of the limiting plate 8 and the limiting nut 9, allows the EPS motor body 2 to be stably fixed in the mounting chamber 4, and can be easily disassembled and installed to adapt to different testing needs and motor maintenance operations. Simultaneously, the limiting plate 8, embedded with the multi-claw limiting hinge block 5, effectively restricts the rotational freedom of the motor output shaft, facilitating stall testing and ensuring the accuracy and reliability of the test.
[0031] like Figure 2 As shown, the top of the housing 1 has multiple sliding holes, and the outer wall of the fixing bolt 7 and the inner wall of the sliding hole are slidably connected.
[0032] To further explain, on the one hand, it can provide guidance for the installation and adjustment of the fixing bolt 7, ensuring the verticality and positional accuracy of the fixing bolt 7 during the installation and tightening process. On the other hand, it is also conducive to observing the overall condition of the fixing bolt 7 and the motor during the test and making possible fine-tuning operations, further improving the practicality and convenience of the test fixture.
[0033] like Figure 2 As shown, the output shaft of the EPS motor body 2 and the multi-claw limiting hinge block 5 are coaxially arranged.
[0034] To further explain, this ensures that during stall testing, the force on the motor output shaft is evenly distributed on the multi-jaw limiting hinge block 5, reducing additional wear or testing errors caused by eccentric force, improving the accuracy of test data and the reliability of the test fixture, and extending the service life of the test fixture and the motor.
[0035] like Figure 3and Figure 4 As shown, the top of the limiting plate 8 has two limiting holes, which are symmetrically arranged on the top of the limiting plate 8. The outer wall of the fixing bolt 7 and the inner wall of the limiting hole are slidably connected.
[0036] To further explain, this helps to stabilize the position of the limit plate 8 on the fixing bolt 7, preventing it from shifting or shaking when the motor is running or subjected to external forces. This ensures the effective limiting and fastening of the side plate of the EPS motor body 2 and the multi-claw limit hinge block 5, guarantees the stability of the overall structure of the motor during the stall test, and improves the reliability of the test results.
[0037] like Figure 2 As shown, the outer wall of the fixing bolt 7 has two threaded grooves. The lower threaded groove is threaded to the inner wall of the threaded sleeve 6, and the lower threaded groove is threaded to the inner wall of the limit nut 9.
[0038] To further explain, this design allows the fixing bolt 7 to connect and fix the bottom of the EPS motor body 2 to the threaded sleeve 6, while simultaneously securing the side plate and the limiting plate 8 of the EPS motor body 2 from above via the limiting nut 9. This optimizes the functional structure of the fixing bolt 7, reduces the number of parts, simplifies the overall structural design, lowers manufacturing costs, and makes the tightening operation more convenient and quick, which is beneficial to improving the assembly efficiency and ease of use of the test fixture.
[0039] The functional principle of this utility model can be explained through the following operation methods:
[0040] The EPS motor body 2 is placed into the corresponding installation chamber 4 through the open bayonet 10 on the housing 1. The fixing bolt 7 is inserted through the sliding hole at the top of the housing 1. The limiting plate 8 is placed on the top of the EPS motor body 2, so that the outer wall of the fixing bolt 7 passes through the through hole of the side plate of the EPS motor body 2 and the limiting hole at the top of the limiting plate 8 in sequence. The lower part of the fixing bolt 7 is threadedly connected to the threaded sleeve 6 at the bottom of the installation chamber 4.
[0041] Adjust the position of the limit plate 8 so that it is embedded in the multi-claw limit hinge block 5 of the output shaft of the EPS motor body 2.
[0042] The limiting nut 9 is threaded onto the fixing bolt 7 and the limiting nut 9 is screwed on to secure the side plate and the limiting plate 8 of the EPS motor body 2, thereby firmly fixing the EPS motor body 2 in the installation chamber 4 and completing the installation and fixing operation of a single EPS motor body 2.
[0043] Repeat the above steps to install all the EPS motor bodies 2 that need to be tested into the corresponding mounting chambers 4 in sequence.
[0044] Connect the relevant testing equipment to the circuit and signal lines of the EPS motor body 2, ensuring that the connection is accurate and that there are no loose, short circuit or other abnormalities in the lines.
[0045] Turn on the testing equipment and perform stall tests on each EPS motor body 2 according to the set test procedure. During the test, closely observe the test data and motor operating status, such as parameters like current, voltage, and temperature, as well as whether the motor has abnormal vibrations or noise.
[0046] After the test is completed, turn off the test equipment, loosen the limit nuts 9 corresponding to each EPS motor body 2 in sequence, unscrew the fixing bolts 7 from the threaded sleeves 6, and then take the EPS motor body 2 out of the installation chamber 4 through the open bayonet 10. Organize the test fixture and related equipment for the next use.
[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A simple multi-channel EPS motor stall test fixture, comprising a housing (1) and multiple EPS motor bodies (2), characterized in that, The inner sidewall of the housing (1) is fixedly installed with multiple partition plates (3) and the housing (1) is divided into multiple installation chambers (4). The output shaft of the EPS motor body (2) is fixedly installed with a multi-claw limiting hinge block (5). The housing (1) is provided with a fixing mechanism to fix the EPS motor body (2) and its output shaft. The fixing mechanism includes two threaded sleeves (6) fixedly installed on the bottom of the installation chamber (4). A detachable fixing bolt (7) is threaded on the inner side wall of the threaded sleeve (6). A through hole is provided on the side plate of the EPS motor body (2). The outer side wall of the fixing bolt (7) and the inner side wall of the through hole are slidably connected. The same limiting plate (8) is slidably sleeved on the outer side wall of the two fixing bolts (7) located in the installation chamber (4). The limiting plate (8) can be embedded in the multi-claw limiting hinge block (5). A limiting nut (9) that can fasten the side plate of the EPS motor body (2) and the limiting plate (8) is threaded on the fixing bolt (7).
2. The simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The top of the housing (1) has multiple sliding holes, and the outer wall of the fixing bolt (7) and the inner wall of the sliding hole are slidably connected.
3. A simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The housing (1) has multiple open slots (10), and the open slots (10) and the installation chamber (4) are connected.
4. A simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The output shaft of the EPS motor body (2) and the multi-claw limiting hinge block (5) are coaxially arranged.
5. A simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The top of the limiting plate (8) has two limiting holes, which are symmetrically arranged on the top of the limiting plate (8). The outer wall of the fixing bolt (7) and the inner wall of the limiting hole are slidably connected.
6. A simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The fixing bolt (7) has two threaded grooves on its outer side wall. The lower threaded groove is threaded to the inner side wall of the threaded sleeve (6), and the lower threaded groove is threaded to the inner side wall of the limiting nut (9).
7. A simplified multi-channel EPS motor stall test fixture according to claim 1, characterized in that, The distance between two adjacent installation chambers (4) is the same.