Noise testing device under motor concentricity or eccentricity
By designing a noise testing device for motors under concentric or eccentric conditions, and using an XYZ direction moving platform and sensors to simulate the actual vehicle conditions, the problem of motor noise testing under eccentric conditions was solved, achieving accurate noise detection and a low-cost testing solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-04-07
AI Technical Summary
Existing window lift motors have gaps in the lift assembly during lifting, resulting in eccentricity. This makes it impossible to accurately test noise under actual vehicle conditions. Furthermore, existing testing equipment cannot meet the noise testing requirements under conditions of motor concentricity or eccentricity.
A noise testing device for motors under concentric or eccentric conditions was designed, including a tooling table, a support table, a transmission shaft, a sensor device, a magnetic powder brake, a flexible coupling, and a moving platform. The eccentric distance of the motor's concentric shaft is limited by the movement in the XYZ directions to simulate the eccentric angle when the door glass of a real car is raised, and noise testing is carried out.
It achieves accurate noise testing under motor concentricity or eccentricity conditions. It has a simple structure, is easy to operate, highly economical, easy to promote and use, and is suitable for noise testing of motors under different angles and eccentricities.
Smart Images
Figure CN121804641A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of motor noise testing, more particularly to a motor concentricity or eccentricity noise testing device. BACKGROUND
[0002] Most modern cars use electric window systems, and the window motor is the most important part of the car electric window system. From its use environment, the window motor can work in high temperature, low temperature, vibration, humidity, and even waterproof environment; it also needs to meet the requirements of window glass lifting speed and stability and the locking force of the door and window; at the same time, it also requires low noise, small vibration, anti-electromagnetic interference, good protection and other advantages. With people's increasing demand for the comfort of cars, the window motor has also gradually attracted attention. Therefore, it is increasingly necessary to invent a car window motor dynamic force testing system to meet the scientific detection requirements of the window motor dynamic force. The existing window lifting motor has a certain gap (0.1-0.3mm) on the lifter assembly when lifting, which produces a certain eccentricity. Because the test tool is fixed at an angle, the noise in the actual vehicle state cannot be obtained, so there is a need for a noise testing device that is easy to use, convenient to adjust the angle of the motor, and tests the noise under the concentricity or eccentricity of the motor. SUMMARY
[0003] The main purpose of the present application is to provide a motor concentricity or eccentricity noise testing device, which can effectively utilize its own structural configuration to realize the advantage of noise testing under the concentricity or eccentricity of the motor.
[0004] Another object of the present application is to provide a motor concentricity or eccentricity noise testing device, wherein the motor concentricity or eccentricity noise testing device comprises a tooling table, the tooling table is arranged to be placed on an external desktop, a first support table and a second support table, the first support table and the second support table are arranged at intervals and are both fixed on the tooling table, a magnetic powder brake is arranged on the first support table, a sensor device is arranged on the second support table, the magnetic powder brake cooperates with the sensor device, a transmission shaft, a first support frame, the first support frame is fixed on the workbench and is spaced apart from the second support table by a predetermined distance, the first support frame has a connecting hole, the transmission shaft is fixed on the tooling table, one end of the transmission shaft passes through the connecting hole and cooperates with the sensor device, the other end extends away from the connecting hole and cooperates with a flexible coupling, and a moving platform, an external window motor is arranged on the moving platform and cooperates with the flexible coupling, that is, the moving platform is arranged to move in three directions of XYZ, and the concentric shaft eccentric distance of the motor is limited by setting different moving distances in three directions, so as to achieve the noise consistent with the eccentric angle generated by the load when the door glass of the real vehicle rises, thereby testing the noise of the motor.
[0005] Another object of the present application is to provide a motor concentricity or eccentricity noise testing device, wherein the motor concentricity or eccentricity noise testing device has simple structure and convenient operation, does not involve complex manufacturing process and expensive materials, has high economic efficiency, and is easy to popularize and use.
[0006] In order to achieve the above-mentioned at least one object of the application, the present application provides a motor concentricity or eccentricity noise testing device, wherein the motor concentricity or eccentricity noise testing device comprises: a tooling table, the tooling table is arranged to be placed on an external desktop, a first support table a second support table, the first support table and the second support table are arranged at intervals and are both fixed on the tooling table, a magnetic powder brake is arranged on the first support table, a sensor device is arranged on the second support table, the magnetic powder brake cooperates with the sensor device a transmission shaft; a first support frame, the first support frame is fixed on the workbench and is spaced apart from the second support table by a predetermined distance, the first support frame has a connecting hole, the transmission shaft is fixed on the tooling table, one end of the transmission shaft passes through the connecting hole and cooperates with the sensor device, the other end extends away from the connecting hole and cooperates with a flexible coupling; and The mobile platform is provided with an external window motor, and the external window motor is matched with the flexible coupling.
[0007] In one or more embodiments of the present application, the tooling table is provided with two spaced first guide rails, both of which are located on the side of the first support frame away from the second support table. The mobile platform includes a mobile base plate, the bottom of which is matched with the two first guide rails to enable the mobile base plate to move on the first guide rails. The top of the mobile platform is also provided with two spaced second guide rails, which are arranged perpendicularly to the first guide rails. The motor concentricity or eccentricity noise testing device also includes a second support frame, which is movably arranged on the two second guide rails. The side of the second support frame away from the first support frame is provided with two spaced third guide rails, which are arranged vertically. The second support frame is also provided with a communication slot, and the two third guide rails are located on both sides of the communication slot. The motor concentricity or eccentricity noise testing device also includes a third support frame, which is movably arranged on the two third guide rails.
[0008] In one or more embodiments of the present application, the side of the third support frame away from the second support frame is also provided with a first mounting slot, which is a through slot and has a stepped shape. Meanwhile, the communication slot is opposite to the first mounting slot.
[0009] In one or more embodiments of the present application, the motor concentricity or eccentricity noise testing device also includes a tooling plate, which is rotatably arranged in the first mounting slot. The tooling plate is also provided with a communication hole, which is opposite to the first mounting slot. The stepped surface of the first mounting slot is also provided with a first annular groove, and the side of the tooling plate facing the third support frame is also provided with a second annular groove, which is opposite to the first annular groove.
[0010] In one or more embodiments of the present application, the motor concentricity or eccentricity noise testing device also includes a plurality of uniformly arranged rolling balls, one side of which is arranged in the first annular groove, and the other side is arranged in the second annular groove.
[0011] In one or more embodiments of the present application, the motor concentricity or eccentricity noise testing device also includes a limiting ring, which is also arranged in the first mounting slot and is spaced apart from the tooling plate by a predetermined distance. The limiting ring is fixedly connected with the side wall forming the first mounting slot.
[0012] In one or more embodiments of the present application, the noise testing device of the motor concentricity or eccentricity further comprises two fourth driving components and a plurality of positioning frames arranged uniformly, the fourth driving components are fixed on the side of the tool plate towards the limiting ring, and the two fourth driving components are arranged at intervals and located on both sides of the communication hole, the positioning frames are fixed on the wall surface of the third support frame provided with the first mounting slot, and the positioning frames are arranged in a ring array, wherein the two fourth driving components each have an extension rod, and each of the fitting frames has an insertion hole, the two extension rods are arranged to extend to a predetermined length to be inserted into the corresponding insertion hole.
[0013] In one or more embodiments of the present application, the noise testing device of the motor concentricity or eccentricity further comprises a fourth support frame fixed on the side of the moving platform towards the first support frame, and a laser centering sensor is installed on the top of the fourth support frame. BRIEF DESCRIPTION OF DRAWINGS
[0014] These and / or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings in which: Figure 1 FIG. 1 shows a structural schematic diagram of a noise testing device of motor concentricity or eccentricity.
[0015] Figure 2 FIG. 2 shows a partial structural schematic diagram of a noise testing device of motor concentricity or eccentricity. Figure 1 .
[0016] Figure 3 FIG. 3 shows a partial structural schematic diagram of a noise testing device of motor concentricity or eccentricity. Figure 2 .
[0017] Figure 4 FIG. 4 shows a partial cross-sectional structural schematic diagram of a noise testing device of motor concentricity or eccentricity.
[0018] Figure 5 FIG. 5 shows an enlarged view of A in FIG. 1. Figure 4
[0019] Figure 6 FIG. 6 shows a partial structural schematic diagram of a noise testing device of motor concentricity or eccentricity. Figure 3 . DETAILED DESCRIPTION
[0020] The terms and words used in the following description and claims are not limited to the literal meanings and are only used to enable a clear and consistent understanding of the application by the present inventors. Accordingly, it is apparent that the following description of various embodiments of the present application is provided only for the purpose of illustration and understanding of the present application, and not for the purpose of limiting the present application as defined in the appended claims and their equivalents.
[0021] It is understood that the term "one" should be understood as "at least one" or "one or more" such that a quantity of an element can be either one or more, in one embodiment, while in another embodiment, the quantity of the element can be one, and the term "one" should not be understood as limiting to a quantity of one.
[0022] Although numerals such as "first", "second", etc. will be used to describe various components, those components are not limited herein. The terms are used only to distinguish one component from another component. For example, a first component can be referred to as a second component, and likewise, a second component can also be referred to as a first component without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] The terms used herein are only for the purpose of describing various embodiments and are not intended to limit. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprise" and / or "have", when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or a combination thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.
[0024] Referring to Figures 1 to 6 , a noise testing device for a motor with concentricity or eccentricity according to a preferred embodiment of the present application, it is noted that the structure of the noise testing device for the motor with concentricity or eccentricity is as shown in Figure 1As shown, it comprises a workbench 10, which is arranged to be placed on an external desktop, and the motor concentricity or eccentricity noise testing device further comprises a first support table 11 and a second support table 12, which are arranged at intervals and are both fixed on the workbench 10, and a magnetic powder brake 20 is arranged on the first support table 11, and a sensor device 30 is arranged on the second support table 12, and the magnetic powder brake 20 cooperates with the sensor device 30, and specifically, the above-mentioned sensor is arranged to detect torque and rotating speed. In addition, it is necessary to note that the motor concentricity or eccentricity noise testing device further comprises a transmission shaft 40 and a first support frame 13, which is fixed on the workbench and is spaced apart from the second support table 12 by a predetermined distance, and the first support frame 13 has a connecting hole, the transmission shaft 40 is fixed on the workbench 10, one end of the transmission shaft 40 passes through the connecting hole and cooperates with the sensor device 30, and the other end extends away from the connecting hole and cooperates with a flexible coupling 900.
[0025] It is worth mentioning that the motor concentricity or eccentricity noise testing device further comprises a moving platform 50, wherein those skilled in the art should understand that the external window motor is arranged on the moving platform 50, and the external window motor further cooperates with the flexible coupling, and it is necessary to note that the above-mentioned moving platform 50 is arranged to move in three directions of XYZ, and by setting different moving distances in three directions, the concentricity eccentric distance of the motor is limited, and the noise consistent with the eccentric angle generated by the load when the door glass of the real vehicle rises is achieved, so as to test the noise of the motor.
[0026] It is worth mentioning that the workbench 10 is provided with two first guide rails 100 arranged at intervals, and the two first guide rails 100 are located on the side of the first support frame 13 away from the second support table 12, and the moving platform 50 comprises a moving bottom plate 51, the bottom of the moving bottom plate 51 cooperates with the two first guide rails 100, so that the moving bottom plate 51 can move on the first guide rail 100, wherein those skilled in the art should understand that the bottom of the moving bottom plate 51 has two first sliders cooperating with the two first guide rails 100, so as to realize the movement of the moving bottom plate 51 by moving the first sliders on the first guide rails 100. As shown in the state of the application, Figure 1 The moving direction of the moving bottom plate 51 is the X-axis direction, that is, the moving bottom plate 51 can move forward and backward.
[0027] Further, the top of the moving base plate 51 is also provided with two second guide rails 200 which are spaced apart and arranged perpendicularly to the first guide rails 100. The noise testing device under the concentricity or eccentricity of the motor further comprises a second support frame 52 which is movably arranged on the two second guide rails 200. The movement mode of the second support frame 52 is consistent with the movement mode of the moving base plate 51, and the movement mode of the second support frame 52 is the Y-axis mode, i.e. the second support frame 52 is arranged to be movable forward and backward.
[0028] It is worth mentioning that the side of the second support frame 52 away from the first support frame 13 is provided with two third guide rails 300 which are spaced apart and arranged vertically. The second support frame 52 is also provided with a communication groove, and the two third guide rails 300 are located on the two sides of the communication groove. The noise testing device under the concentricity or eccentricity of the motor further comprises a third support frame 53 which is movably arranged on the two third guide rails 300. The movement mode of the third support frame 53 is consistent with the movement mode of the second support frame 52, and the movement mode of the third support frame 53 is the Z-axis mode, i.e. the third support frame 53 is arranged to be movable up and down.
[0029] It is worth mentioning that the noise testing device under the concentricity or eccentricity of the motor further comprises a first driving assembly 400. The first driving assembly 400 comprises a first driving part and a first rotating shaft. The first driving part is arranged on the first support frame 13, and one end of the first rotating shaft is connected with the first driving part and the other end is matched with the moving base plate 51. The first driving part is arranged to drive the first rotating shaft to rotate so as to drive the moving base plate 51 to move.
[0030] Specifically, the noise testing device under the concentricity or eccentricity of the motor further comprises a second driving assembly 500. The second driving assembly 500 comprises a second driving part, a second rotating shaft and a first fixing block. The second driving part is fixed on one side of the moving base plate 51. One end of the second rotating shaft is fixed on the second driving part, and the first fixing block is fixed on the bottom of the second support frame 52. The second rotating shaft is matched with the first fixing block, i.e. through the rotation of the second rotating shaft, the first fixing block moves along the axis of the second rotating shaft, and the second support frame 52 which is matched with the first fixing block moves synchronously.
[0031] Specifically, the noise testing device under motor concentricity or eccentricity also includes a third drive assembly 600. The third drive assembly 600 includes a third drive component, a third rotating shaft, and a second fixed block. The third drive component is fixed to the top of the second support frame 52, and one end of the third rotating shaft cooperates with the third drive component. The second fixed block is fixed to the side of the third support frame 53 facing the second support frame 52, and the other end of the third rotating shaft cooperates with the second fixed block. That is, by rotating the third rotating shaft, the second fixed block moves along the axis of the third rotating shaft, and the third support frame 53 cooperating with the second fixed block moves synchronously.
[0032] Among them, such as Figure 5 As shown, the third support frame 53 also has a first mounting groove 5301 on the side opposite to the second support frame 52. The first mounting groove 5301 is a through groove and is stepped, and the connecting groove is directly opposite the first mounting groove 5301.
[0033] Specifically, the noise testing device for motor concentricity or eccentricity further includes a tooling plate 60, which is rotatably disposed within the first mounting groove 5301. The tooling plate 60 also has a communicating hole facing the first mounting groove 5301. The stepped surface of the first mounting groove 5301 also has a first annular groove, and the side of the tooling plate 60 facing the third support frame 53 has a second annular groove, with the first annular groove facing the second annular groove. The noise testing device for motor concentricity or eccentricity also includes... The fixture plate 60 includes multiple evenly distributed ball bearings 700, with one side of each ball bearing 700 disposed in the first annular groove and the other side disposed in the second annular groove. The fixture plate 60 rotates via the ball bearings 700. Simultaneously, the ball bearings 700 support the fixture plate 60, ensuring that the fixture plate 60 is spaced a predetermined distance from the stepped surface of the first mounting groove 5301. Furthermore, the surface of the fixture plate 60 is also spaced a predetermined distance from the sidewall forming the first mounting groove 5301 to ensure smooth rotation of the fixture plate 60.
[0034] It is worth mentioning that the noise testing device of the motor concentricity or eccentricity further comprises a limiting ring 70, the limiting ring is also arranged in the first mounting groove 5301 and is spaced apart from the tooling plate 60 by a predetermined distance, and the limiting ring 70 is arranged to limit the position of the tooling plate 60, so that the tooling plate 60 cannot be separated from the first mounting groove 5301, and the limiting ring 70 is fixedly connected with the side wall forming the first mounting groove 5301, that is, the position of the limiting ring 70 is fixed by an external latch, specifically, the limiting ring 70 and the side wall forming the first mounting groove 5301 both have positioning holes matched with the external latch, so as to limit the position of the limiting ring 70 by inserting the external latch.
[0035] Specifically, the noise testing device of the motor concentricity or eccentricity further comprises two fourth driving components 80 and a plurality of positioning frames 90 arranged uniformly, the fourth driving components 80 are fixed on the side of the tooling plate 60 facing the limiting ring 70, and the two fourth driving components 80 are arranged at intervals and located on both sides of the communication hole, the plurality of positioning frames 90 are fixed on the wall surface of the third support frame 53 provided with the first mounting groove 5301, and the plurality of positioning frames 90 are arranged in a ring array, wherein each of the two fourth driving components 80 has an extension rod, and each of the positioning frames has an insertion hole, the two extension rods are arranged to extend by a predetermined length and are inserted into the corresponding insertion holes, so that the extension rods cooperate with the positioning frames, and when the two extension rods cooperate with the two insertion holes respectively, the tooling plate 60 cannot rotate.
[0036] In addition, it is necessary to mention that the noise testing device of the motor concentricity or eccentricity further comprises a fourth support frame, the fourth support frame is fixed on the side of the moving base plate 51 facing the first support frame 13, in addition, the first rotating shaft of the first driving assembly 400 further cooperates with the bottom of the fourth support frame, and the top of the fourth support frame is further provided with a laser centering sensor 800, wherein the moving base plate 51, the second support frame 52 and the third support frame 53 identify the concentric angle of the motor center shaft and the transmission shaft through the laser centering sensor 800, the initial point of the laser centering sensor 800 is based on the transmission shaft (or 0 position), when the motor is fixed on the tooling plate 60, the external test program can identify the deviation distance of the motor output shaft and the transmission shaft as the base point, after the automatic centering is completed, the deviation distance of S, Y and Z three directions can be manually set, so as to achieve the eccentric distance, in addition, the tooling plate 60 is rotated to install the motor in different angle states, and the influence of the eccentricity on the noise size is obtained.
[0037] In conclusion, the motor concentricity or eccentricity noise testing device based on the embodiments of the present application is illustrated, which provides the advantages of noise testing under motor concentricity or eccentricity for the motor concentricity or eccentricity noise testing device.
[0038] It is worth mentioning that in the embodiments of the present application, the motor concentricity or eccentricity noise testing device has simple structure, does not involve complex manufacturing process and expensive materials, and has higher economy. At the same time, for the manufacturers, the motor concentricity or eccentricity noise testing device provided by the present application is easy to produce and has low cost, which is more conducive to controlling the production cost, and further conducive to product promotion and use.
[0039] Those skilled in the art should understand that the embodiments of the present application shown in the above description and the accompanying drawings are only as examples and do not limit the present application. The purpose of the present application has been fully and effectively achieved. The function and structural principle of the present application has been shown and explained in the embodiments, and the embodiments of the present application can have any modification or modification without departing from the principle.
Claims
1. A noise testing device for motors under concentric or eccentric conditions, characterized in that, The noise testing device for motor concentricity or eccentricity includes: The tooling table is configured to be placed on an external desktop. First support platform A second support platform is provided, with the first and second support platforms spaced apart and both fixed to the tooling table. A magnetic powder brake is mounted on the first support platform, and a sensor device is mounted on the second support platform. The magnetic powder brake cooperates with the sensor device. transmission shaft; A first support frame is fixed to the worktable and spaced a predetermined distance from the second support frame. The first support frame has a connecting hole. A drive shaft is fixed to the tooling table, with one end passing through the connecting hole and engaging with the sensor device, and the other end extending away from the connecting hole and engaging with a flexible coupling. The mobile platform has an external window-sliding motor mounted on it, and the external window-sliding motor also cooperates with the flexible coupling.
2. The noise testing device for motor concentricity or eccentricity according to claim 1, wherein the tooling table is provided with two spaced-apart first guide rails, both of which are located on the side of the first support frame away from the second support table; the moving platform includes a moving base plate, the bottom of which cooperates with the two first guide rails so that the moving base plate can move on the first guide rails; and the top of the moving platform is also provided with two spaced-apart second guide rails, which are perpendicular to the first guide rails.
3. The noise testing device for motor concentricity or eccentricity according to claim 2, wherein the noise testing device for motor concentricity or eccentricity further includes a second support frame, the second support frame being movably disposed on two second guide rails, the second support frame having two spaced third guide rails on the side opposite to the first support frame, the two third guide rails being vertically disposed, and the second support frame also having a connecting groove, the two third guide rails being located on both sides of the connecting groove, wherein the noise testing device for motor concentricity or eccentricity further includes a third support frame, the third support frame being movably disposed on the two third guide rails.
4. The noise testing device for motor concentricity or eccentricity according to claim 3, wherein the third support frame has a first mounting groove on the side opposite to the second support frame, the first mounting groove is a through groove and is stepped, and the through groove is directly opposite the first mounting groove.
5. The noise testing device for motor concentricity or eccentricity according to claim 4, wherein the noise testing device for motor concentricity or eccentricity further includes a tooling plate, the tooling plate being rotatably disposed in the first mounting groove, and the tooling plate further having a connecting hole facing the first mounting groove, and the stepped surface of the first mounting groove further having a first annular groove, and the side of the tooling plate facing the third support frame further having a second annular groove, the first annular groove facing the second annular groove.
6. The noise testing device for motor concentricity or eccentricity according to claim 5, wherein the noise testing device for motor concentricity or eccentricity further includes a plurality of evenly distributed balls, one side of the plurality of balls being disposed in the first annular groove and the other side being disposed in the second annular groove.
7. The noise testing device for motor concentricity or eccentricity according to claim 6, wherein the noise testing device for motor concentricity or eccentricity further includes a limiting ring, the limiting plate is also disposed in the first mounting groove and spaced at a predetermined distance from the tooling plate, and the limiting ring is fixedly connected to the side wall forming the first mounting groove.
8. The noise testing device for motor concentricity or eccentricity according to claim 7, wherein the noise testing device for motor concentricity or eccentricity further includes two fourth driving components and a plurality of evenly distributed positioning frames, the fourth driving components are fixed on the tooling plate facing the limiting ring, and the two fourth driving components are spaced apart and located on both sides of the communicating hole, the plurality of positioning frames are fixed on the wall surface of the third support frame with the first mounting groove, and the plurality of positioning frames are arranged in a ring array, wherein the two fourth driving components each have a telescopic rod, and each of the mating frames has an insertion hole, and the two telescopic rods are configured to extend to a predetermined length to be inserted into the corresponding insertion hole.
9. The noise testing device for motor concentricity or eccentricity according to claim 8, wherein the noise testing device for motor concentricity or eccentricity further includes a fourth support frame, the fourth support frame is fixed on the side of the moving platform facing the first support frame, and a laser alignment sensor is also installed on the top of the fourth support frame.