Automobile seat slide rail vibration detection device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN FAW ADIENT AUTOMOTIVE METAL PARTS CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
AI Technical Summary
Current technology lacks specific detection capabilities for mechanical vibrations in car seat rails, which negatively impacts the passenger experience.
An independent motor assembly and four proximity switches, in conjunction with a PLC, are used to perform segmented detection of mechanical vibration on the upper and lower slide rails. The vibration sensors collect and process the signals to assess the qualification of the slide rails.
The vibration detection has been refined, which can eliminate defective products before assembly and improve the vibration reduction effect during the production process.
Smart Images
Figure CN224398934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat slide rail testing, and in particular to an automotive seat slide rail vibration testing device. Background Technology
[0002] Electric car seats typically use sliding rails to adjust their position forward and backward to accommodate drivers or passengers of different sizes. Because the sliding rails contain a transmission mechanism, vibration occurs during the high-speed rotation of the motor, directly impacting the passenger experience. While advancements in seat motor structure, materials, and assembly technology have reduced noise and vibration, the mechanical vibration from the forward and backward adjustment of the upper and lower rails still affects passenger comfort. Current electric seat testing equipment lacks specific detection capabilities for the mechanical vibration of the upper and lower rails. Summary of the Invention
[0003] This utility model addresses the shortcomings of existing technologies by developing a vibration detection device for automotive seat slide rails. The technical solution adopted by this utility model is: a vibration detection device for automotive seat slide rails, characterized by comprising a motor assembly 1, a slide rail detection assembly 2, and a PLC; the motor assembly 1 includes a slider 3, a motor 4, a guide rail 5, and a first base plate 6; the guide rail 5 is fixedly mounted on the first base plate 6; the slider 3 is slidably connected to the guide rail 5; the motor 4 is fixedly mounted on the slider 3; the slide rail detection assembly 2 includes a second base plate 7, a slide rail fixing mechanism 8, a vibration sensor 16, a first proximity switch 17, a second proximity switch 18, a third proximity switch 19, and a fourth proximity switch 20; the slide rail fixing mechanism 8 includes a first clamp 9, a slide rail fixing block 12, and a second clamp 13; the first clamp 9 includes a first clamp seat 10 and a first set screw 11; the first clamp seat 10 is fixed... The first set screw 11 passes through the first clamp 10 and the two are threadedly connected; the slide rail fixing block 12 is fixedly mounted on the second base plate 7; the second clamp 13 includes a second clamp 14 and a second set screw 15; the second clamp 14 is fixedly mounted on the second base plate 7; the second set screw 15 passes through the second clamp 14 and the two are threadedly connected; the first proximity switch 17, the second proximity switch 18, the third proximity switch 19 and the fourth proximity switch 20 are respectively fixedly mounted on the second base plate 7; the lower part of the second base plate 7 is connected to an air spring 25; the motor 4, the vibration sensor 16, the first proximity switch 17, the second proximity switch 18, the third proximity switch 19 and the fourth proximity switch 20 are respectively electrically connected to the PLC.
[0004] The advantages of this utility model are as follows: by adopting an independent motor assembly, the motor vibration is separated, and the detection of mechanical vibration of the upper and lower slide rails is specifically achieved. In addition, with the cooperation of four proximity switches and PLC, the mechanical vibration of the upper slide rail can be detected in segments during the entire adjustment process, and the vibration stage is refined. In addition to eliminating unqualified products before assembling the slide rail, the vibration reduction effect can also be improved in a targeted manner during subsequent production and processing. Attached Figure Description
[0005] Figure 1 This is a top view schematic diagram of the structure of a vibration detection device for automotive seat slide rails according to this utility model;
[0006] Figure 2 This is a top view of the state when the present invention is installed in the seat slide rail to be tested;
[0007] Figure 3 This is a top view of the motor of this invention connected to the gearbox on the upper slide rail using a flexible shaft, in preparation for testing.
[0008] Figure 4 This is a top view schematic diagram of the state during the vibration detection of the upper slide rail in the first stage of the movement of this utility model;
[0009] Figure 5 This is a top view schematic diagram of the state during the vibration detection of the upper slide rail in the second stage of the movement of this utility model;
[0010] Figure 6 This is a top view schematic diagram of the state during vibration detection of the upper slide rail in the third stage of its movement, according to this utility model.
[0011] Figure 7 This is a top view schematic diagram of the state during vibration detection of the upper slide rail in the fourth stage of its movement, according to this utility model.
[0012] In the diagram: 1 Motor assembly; 2 Slide rail detection assembly; 3 Slider; 4 Motor; 5 Guide rail; 6 First base plate; 7 Second base plate; 8 Slide rail fixing mechanism; 9 First clamp; 10 First clamping seat; 11 First set screw; 12 Slide rail fixing block; 13 Second clamp; 14 Second clamping seat; 15 Second set screw; 16 Vibration sensor; 17 First proximity switch; 18 Second proximity switch; 19 Third proximity switch; 20 Fourth proximity switch; 21 Slide rail; 22 Upper slide rail; 23 Gearbox; 24 Flexible shaft; 25 Air spring. Detailed Implementation
[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0014] like Figure 1As shown, the present invention provides a vibration detection device for automotive seat slide rails, comprising: a motor assembly 1, a slide rail detection assembly 2, and a PLC; the motor assembly 1 includes a slider 3, a motor 4, a guide rail 5, and a first base plate 6; the guide rail 5 is fixedly mounted on the first base plate 6; the slider 3 is slidably connected to the guide rail 5; the motor 4 is fixedly mounted on the slider 3; the slide rail detection assembly 2 includes a second base plate 7, a slide rail fixing mechanism 8, a vibration sensor 16, a first proximity switch 17, a second proximity switch 18, a third proximity switch 19, and a fourth proximity switch 20; the slide rail fixing mechanism 8 includes a first clamp 9, a slide rail fixing block 12, and a second clamp 13; the first clamp 9 includes a first clamping seat 10 and a first set screw 11; the first clamping seat 10 is fixedly mounted on the first base plate 6; the slide rail 4 ... slide rail 5 is slidably connected to the guide rail 6; the slide rail 5 is slidably connected to the guide rail 6; the slide rail 6 is slidably connected to the guide rail 6; the slide rail 6 is slid The second base plate 7 is used for mounting the first clamping seat 10, which is threaded together. The slide rail fixing block 12 is fixedly mounted on the second base plate 7. The second clamping fixture 13 includes a second clamping seat 14 and a second clamping screw 15. The second clamping seat 14 is fixedly mounted on the second base plate 7. The second clamping screw 15 passes through the second clamping seat 14 and is threaded together. The first proximity switch 17, the second proximity switch 18, the third proximity switch 19 and the fourth proximity switch 20 are respectively fixedly mounted on the second base plate 7. An air spring 25 is connected to the lower part of the second base plate 7. The motor 4, the vibration sensor 16, the first proximity switch 17, the second proximity switch 18, the third proximity switch 19 and the fourth proximity switch 20 are respectively electrically connected to the PLC.
[0015] In specific operations, such as Figure 2 As shown, the worker first clamps the assembled lower slide rail 21 and upper slide rail 22. The worker places the left end of the lower slide rail 21 into the first clamp 10 and the right end into the second clamp 14, ensuring that the middle section of the lower slide rail 21 is engaged in the slide rail fixing block 12. Then the worker tightens the first set screw 11 and the second set screw 15 to ensure that the lower slide rail is relatively fixed.
[0016] like Figure 3 As shown, the worker inserts both ends of the flexible shaft 24 into the corresponding holes of the motor 4 and gearbox 23, respectively. The first base plate 6 is fixed to the ground; four air springs 25 are connected to the bottom of the second base plate 7 to significantly reduce the impact of ground vibration on the test results. At this point, the preparation work before the test is completed.
[0017] like Figure 4As shown, when the worker starts the equipment, the PLC controls the motor 4 to rotate, and the flexible shaft 24 drives the gears in the gearbox 23 to rotate. The upper slide rail 22 moves to the right relative to the lower slide rail 21 in the figure, and the slider 3 also moves to the right along the guide rail 5. At this time, the vibration sensor 16 converts the mechanical signal collected by the upper slide rail 22 into an electrical signal and transmits it to the PLC. When the upper slide rail 22 is detected by the first proximity switch 17, the PLC records the vibration information of the upper slide rail 22 in the first movement stage.
[0018] like Figures 5 to 7 As shown, the PLC controls the motor 4 to rotate continuously, and the upper slide rail 22 moves continuously to the right. Following the principle described earlier, the vibration sensor 16 continuously sends signals to the PLC. When the upper slide rail 22 is detected sequentially by the second proximity switch 18, the third proximity switch 19, and the fourth proximity switch 20, it reflects the vibration in the second, third, and fourth stages of its movement. The collected electrical signals are then amplified and filtered to generate a time-frequency spectrum diagram of the slide rail. This spectrum diagram is compared with that of a qualified part to assess the repetition rate, thus quantitatively evaluating the vibration of the slide rail and determining its qualification.
[0019] The mechanical structure and fit between the upper and lower rails of a car seat and the gearbox are common knowledge.
[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the scope of protection of the present utility model.
Claims
1. A vibration detection device for automotive seat slide rails, characterized in that, The system includes a motor assembly (1), a slide rail detection assembly (2), and a PLC. The motor assembly (1) includes a slider (3), a motor (4), a guide rail (5), and a first base plate (6). The guide rail (5) is fixedly mounted on the first base plate (6). The slider (3) is slidably connected to the guide rail (5). The motor (4) is fixedly mounted on the slider (3). The slide rail detection assembly (2) includes a second base plate (7), a slide rail fixing mechanism (8), a vibration sensor (16), a first proximity switch (17), a second proximity switch (18), a third proximity switch (19), and a fourth proximity switch (20). The slide rail fixing mechanism (8) includes a first clamp (9), a slide rail fixing block (12), and a second clamp (13). The first clamp (9) includes a first clamp seat (10) and a first set screw (11). The first clamp seat (10) is fixedly mounted on the second base plate (7). The first set screw (11) passes through the first clamp (10) and the two are threaded together; the slide rail fixing block (12) is fixedly mounted on the second base plate (7); the second clamp (13) includes a second clamp (14) and a second set screw (15); the second clamp (14) is fixedly mounted on the second base plate (7); the second set screw (15) passes through the second clamp (14) and the two are threaded together; the first proximity switch (17), the second proximity switch (18), the third proximity switch (19) and the fourth proximity switch (20) are respectively fixedly mounted on the second base plate (7); the lower part of the second base plate (7) is connected to an air spring (25); the motor (4), the vibration sensor (16), the first proximity switch (17), the second proximity switch (18), the third proximity switch (19) and the fourth proximity switch (20) are respectively electrically connected to the PLC.