A universal vibration test fixture for vehicle-mounted display screens
By designing a flexible clamping assembly that combines a central clamp and side clamps, the problem of adaptability to various forms of vehicle-mounted displays was solved, achieving stable clamping and fixation for multi-angle vibration tests, and improving the universality and effectiveness of the tests.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU TOPPOWER AUTOMOTIVE ELECTRONICS
- Filing Date
- 2023-04-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing universal vibration test fixtures for vehicle displays are difficult to adapt to the various shapes and installation angles of vehicle displays under different car types, brands and models, resulting in various differences in the shape of the mounting surface, making it impossible to achieve multi-angle vibration testing.
Design a universal vibration test fixture that includes a central clamp and two side clamps. The fixture uses a combination of flexible plates and positioning rods. The flexible plates adapt to the surface shape of the display screen, and multi-angle fixation is achieved using guide rails and sliders. The fixation is further strengthened by elastic mesh belts and fixing blocks.
It achieves universal clamping of vehicle-mounted displays of different shapes and angles, enabling multi-angle vibration tests and improving the versatility and stability of the tests.
Smart Images
Figure CN116380385B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of vehicle display screen fixture technology, specifically relating to a universal vibration testing fixture for vehicle display screens. Background Technology
[0002] In-vehicle displays are important internal display devices in automobiles, capable of displaying various parameters during vehicle operation, allowing drivers to intuitively understand the vehicle's operating status. With the development of the automotive industry, the shapes and interior designs of cars have become increasingly diverse to meet different functional or aesthetic needs. Therefore, in-vehicle displays are also developing towards intelligence and diversification. Currently, depending on the type, brand, and model of the car, the shape and size of in-vehicle displays vary considerably. Furthermore, in actual use, in-vehicle displays are installed on the center console, passenger side, back of the front seats, or the inside of the doors. However, not all parts of the car's interior are perfectly flat; some have vertical or horizontal tilt angles. This results in various corresponding shapes for the mounting surface on the back of the in-vehicle display. This necessitates that universal vibration testing fixtures for in-vehicle displays can accommodate various shapes and sizes and facilitate multi-angle vibration testing. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides a universal vibration testing fixture for vehicle-mounted displays, comprising a central fixture and two side fixtures on either side, with a base plate underneath the central fixture and the two side fixtures for supporting the central fixture and the side fixtures; a first guide rail is provided on the base plate for moving the position of the side fixtures.
[0004] The central clamp is equipped with a set of clamping components on both sides, and the side clamp is equipped with a set of auxiliary clamping components on both sides, for simultaneously clamping two vehicle-mounted displays for vibration testing;
[0005] The clamping assembly includes a first base support, a top support, and a first curvature adjustment assembly. The first base support is located at the bottom of the central clamp and is used to support the vehicle display screen. The top support is located at the top of the central clamp and is used to fix the top position of the vehicle display screen. The first curvature adjustment assembly is located between the first base support and the top support.
[0006] The auxiliary support assembly includes a second base and a second curvature adjustment assembly above it, with the second base located at the bottom of the side clamp.
[0007] Optionally, the central clamp is elongated, with the sides of the central clamp facing the two side clamps being end sides, and the other two sides being clamping sides, and the clamping assembly being disposed on the clamping sides; the direction of the line connecting the two end sides is the length direction of the central clamp.
[0008] The first base is located at the bottom of the clamping side and is used to support the bottom of the vehicle display screen.
[0009] Further optionally, the top support is located on the upper part of the clamping side and includes a horizontal top plate and two vertical second guide rails on both sides. The two second guide rails are respectively located at both ends of the clamping side, and the two ends of the horizontal top plate are slidably connected in the two second guide rails to realize the vertical movement of the horizontal top plate.
[0010] The upper surface of the horizontal top plate is provided on the third guide rail, which is parallel to the horizontal top plate. A pusher is slidably connected inside the third guide rail, and the pusher can move along the third guide rail (i.e. along the horizontal top plate).
[0011] Optionally, the first curvature adjustment component includes a first flexible plate and several first positioning rods. The central clamp is hollow, and the first flexible plate is a part of the wall surface of the corresponding clamping side. The side of the first flexible plate facing the vehicle display screen is the front, and the other side is the back. Several first positioning rods are evenly arranged on the back of the first flexible plate.
[0012] The first flexible plate has a first support plate on one side of its back side. The first support plate is vertically installed inside the central clamp and has several through holes evenly distributed on its surface. The through holes correspond one-to-one with the positions of the first positioning rods. The first positioning rods pass through the through holes to fix the first positioning rods in the vertical direction.
[0013] Optionally, the first guide rail passes through and is parallel to the central axis of the middle clamp along its length. The center of each of the two side clamps is provided with a slider. The side clamps are slidably connected to the first guide rail through the sliders and move closer to or further away from the middle clamp along the first guide rail.
[0014] Optionally, the side of the side clamp facing the vehicle display screen is the side clamping side, and the side facing the middle clamp is the side side. The auxiliary support component is provided on the side clamping side. The second bottom support is provided at the bottom of the side clamping side to help support the end of the vehicle display screen.
[0015] Optionally, the second curvature adjustment component includes a second flexible plate, an elastic mesh belt, and several second positioning rods. The side clamp is hollow, and the second flexible plate is a portion of the wall surface of the corresponding side clamping side. The side of the second flexible plate facing the vehicle display screen is the front, and the other side is the back. Several second positioning rods are evenly arranged on the back of the second flexible plate.
[0016] The second flexible plate has a second support plate on one side of its back side. The second support plate is vertically installed inside the side clamp and has several through holes evenly distributed on its surface. The through holes correspond one-to-one with the positions of the second positioning rods. The second positioning rods pass through the through holes to fix the second positioning rods in the vertical direction.
[0017] The front of the second flexible plate is provided with a single layer of elastic mesh belt. The elastic mesh belt is not closed at the side, that is, it has an opening, allowing the vehicle display screen to enter the elastic mesh belt. The edges of the elastic mesh belt at other positions are fixed to the side clamps, but not fixed to the second flexible plate.
[0018] Optionally, the auxiliary holding component further includes an auxiliary fixing part, which is located at one end of the side clamping side away from the side. The auxiliary fixing part includes a track group and a fixing block group. The track group includes three sub-tracks arranged vertically. The upper sub-track is inclined from top to bottom toward the elastic mesh belt, the middle sub-track is horizontally arranged, and the lower sub-track is inclined from bottom to top toward the elastic mesh belt.
[0019] The fixing block group includes three fixing blocks: the upper fixing block is detachably slidably connected to the upper sub-track, the middle fixing block is detachably slidably connected to the middle sub-track, and the lower fixing block is detachably slidably connected to the lower sub-track.
[0020] The side of the upper fixing block facing the elastic mesh belt is inclined from top to bottom in the opposite direction of the elastic mesh belt, the side of the lower fixing block facing the elastic mesh belt is inclined from bottom to top in the opposite direction of the elastic mesh belt, and the side of the middle fixing block facing the elastic mesh belt is a vertical side. Attached Figure Description
[0021] Figure 1 A schematic diagram of the front structure of a universal vibration test fixture for vehicle-mounted displays;
[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the fixture;
[0023] Figure 3 This is a cross-sectional schematic diagram of the central clamp (top support omitted);
[0024] Figure 4 This is a schematic diagram of the cross-section of the edge clamp.
[0025] In the attached diagram, 1-middle clamp, 2-side clamp, 3-main base plate, 4-first guide rail, 5-second guide rail, 6-third guide rail, 7-upper branch rail, 8-middle branch rail, 9-lower branch rail, 10-lower fixing block, 11-first base support, 12-second base support, 13-top support, 14-end side, 15-clamping side, 16-horizontal top plate, 17-push handle, 18-first flexible plate, 19-second flexible plate, 20-first positioning rod, 21-second positioning rod, 22-first support plate, 23-second support plate, 24-side clamping side, 25-side side, 26-elastic mesh belt, 27-upper fixing block, 28-middle fixing block. Detailed Implementation
[0026] This embodiment provides a universal vibration testing fixture for vehicle-mounted displays, such as... Figures 1-4As shown, it includes a central clamp 1 and two side clamps 2 on both sides. A base plate 3 is provided below the central clamp 1 and the two side clamps 2 to support the central clamp 1 and the side clamps 2. A first guide rail 4 is provided on the base plate 3 to move the position of the side clamps 2 so as to adapt to vehicle display screens of different lengths.
[0027] The middle clamp 1 has a set of clamping components on both sides, and the side clamp 2 has a set of auxiliary clamping components on both sides, for simultaneously clamping two vehicle-mounted displays for vibration testing.
[0028] The clamping assembly includes a first base support 11, a top support 13, and a first curvature adjustment assembly. The first base support 11 is located at the bottom of the middle clamp 1 and is used to support the vehicle display screen. The top support 13 is located at the top of the middle clamp 1 and is used to fix the top position of the vehicle display screen. The first curvature adjustment assembly is located between the first base support 11 and the top support 13.
[0029] The auxiliary support assembly includes a second base 12 and a second curvature adjustment assembly above it. The second base 12 is located at the bottom of the side clamp 2.
[0030] Optionally, the central clamp 1 is elongated and its height is greater than that of current automotive displays on the market, making it easier to place and support various automotive displays. The sides of the central clamp 1 facing the two side clamps 2 are end sides 14, and the other two sides are clamping sides 15, used to clamp the automotive displays. The clamping components are provided on the clamping sides 15. The direction of the line connecting the two end sides 14 is the length direction of the central clamp 1, and the direction of the line connecting the two clamping sides 15 is the width direction of the central clamp 1.
[0031] The first base 11 is located at the bottom of the clamping side 15 and is used to support the bottom of the vehicle display screen. Both clamping sides are inclined, so that the distance between the upper parts of the two clamping sides is less than the distance between the lower parts, making the cross-section of the middle clamp trapezoidal.
[0032] Further optionally, the top support 13 is located on the upper part of the clamping side 15, including a horizontal top plate 16 and two vertical second guide rails 5 on both sides. The two second guide rails 5 are respectively located at both ends of the clamping side 15 (i.e., close to the two end sides 14). The two ends of the horizontal top plate 16 are respectively slidably connected in the two second guide rails 5 to realize the vertical movement of the horizontal top plate 16.
[0033] The upper surface of the horizontal top plate 16 is provided on the third guide rail 6, which is parallel to the horizontal top plate 16. The pusher 17 is slidably connected inside the third guide rail 6, and the pusher 17 can move along the third guide rail 6 (i.e. along the horizontal top plate 16).
[0034] The pusher 17 has a retractable positioning post on the side facing the clamping side 15. The pusher 17 is equipped with a control button for mechanically controlling the extension and retraction of the positioning post. When the positioning post extends, it abuts against the clamping side 15, which can fix the position of the pusher 17 and the horizontal top plate 16. When the positioning post retracts into the pusher 17, both the pusher 17 and the horizontal top plate 16 can move.
[0035] During the test, the two side clamps 2 are first moved away from the central clamp 1 along the corresponding first guide rail 4 to provide sufficient space for the vehicle display screen. The bottom of the vehicle display screen is placed on the first base 11, which is horizontal, so that the bottom of the vehicle display screen is placed stably. Since the highest point of the top of the vehicle display screen may not be in the center of the vehicle display screen (it may be on the left or right side of the display screen), the horizontal top plate 16 is always placed horizontally. The pusher 17 is moved along the third guide rail 6 to the position corresponding to the highest point of the vehicle display screen, and pushes the horizontal top plate 16 downward along the second guide rail 5 until the lower surface of the horizontal top plate 16 touches the highest point of the top of the vehicle display screen. The positioning post is extended and abutted against the clamping side 15 by controlling the button. By fixing the position of the pusher 17 and the horizontal top plate 16, the horizontal top plate 16 is fixed to the top of the vehicle display screen.
[0036] Optionally, the first arc adjustment component includes a first flexible plate 18 and a plurality of first positioning rods 20. The central clamp 1 is hollow, the first flexible plate 18 is part of the wall surface of the corresponding clamping side 15, the side of the first flexible plate 18 facing the vehicle display screen is the front, and the other side is the back. A plurality of first positioning rods 20 are evenly arranged on the back of the first flexible plate 18.
[0037] A first support plate 22 is provided on one side of the back of the first flexible plate 18. The first support plate 22 is vertically arranged inside the central clamp 1, and a number of through holes are evenly provided on its surface. The through holes correspond one-to-one with the positions of the first positioning rods 20. The first positioning rods 20 pass through the through holes to fix the first positioning rods 20 in the vertical direction.
[0038] Traditional vehicle-mounted displays have a flat front and / or back, and the side of the clamp that contacts the display can be made flat. However, with the emergence of various shapes of vehicle-mounted displays, in order to fit the mounting surface inside the car, both sides of the display can be curved, that is, both sides of the display have concave and convex shapes. Depending on the mounting surface inside the car, the concave and convex positions and angles / curvatures of different vehicle-mounted displays also vary. How can we provide a universal clamp that can be applied to different vehicle-mounted displays and avoid making separate clamps for each type of display?
[0039] In this invention, the clamping side 15 of the central clamp 1 does not have a flat solid plate in the middle, but instead has a first flexible plate 18. When the front or back of the vehicle display screen presses against the first flexible plate 18, the first flexible plate 18 adapts to the shape of the surface of the vehicle display screen and presents a corresponding shape. The first positioning rod 20 is always inserted into the corresponding through hole. The first flexible plate 18 is kept upright by the first positioning rod 20 and the first support plate 22, and supports the vehicle display screen. The lengths of the first positioning rods 20 extending out of the through holes vary according to the shape of the first flexible plate 18 after deformation, realizing the universality of the first curvature adjustment component. The length of the first flexible plate 18 is less than the length of the central clamp 1 to avoid affecting the setting of the second guide rail 5. The length of the first flexible plate 18 is 2 / 3-4 / 5 of the length of the central clamp 1, and the height is 2 / 3-4 / 5 of the height of the central clamp 1.
[0040] Optionally, the first guide rail 4 passes through and is parallel to the central axis of the middle clamp 1 along its length. The center of each of the two side clamps 2 is provided with a slider. The side clamps 2 are slidably connected to the first guide rail 4 through the sliders and move closer to or away from the middle clamp 1 along the first guide rail 4.
[0041] The slider is equipped with a limiting device to fix the side clamp 2 and prevent it from sliding during subsequent tests. The limiting device can be a conventional limiting device, such as retractable blocks on both sides of the slider. When limiting is required, the blocks extend and abut against the inner wall of the first guide rail 4.
[0042] Optionally, the side of the side clamp 2 facing the vehicle display screen is the side clamping side 24, and the side facing the middle clamp 1 is the side clamping side 25. The auxiliary support component is provided on the side clamping side 24. The second base 12 is provided at the bottom of the side clamping side 24 and is horizontal. The height of the second base 12 is equal to the height of the first base 12, and is used to assist in supporting the end of the vehicle display screen.
[0043] Optionally, the second curvature adjustment component includes a second flexible plate 19, an elastic mesh belt 26 and a plurality of second positioning rods 21. The side clamp 2 is hollow, and the second flexible plate 19 is a part of the wall surface of the corresponding side clamping side 24. The side of the second flexible plate 19 facing the vehicle display screen is the front, and the other side is the back. A plurality of second positioning rods 21 are evenly arranged on the back of the second flexible plate 19.
[0044] The second flexible plate 19 has a second support plate 23 on one side of its back side. The second support plate 23 is vertically arranged inside the side clamp 2, and its surface is evenly provided with several through holes. The through holes correspond one-to-one with the positions of the second positioning rod 21. The second positioning rod 21 passes through the through holes to fix the second positioning rod 21 in the vertical direction.
[0045] The front of the second flexible plate 19 is provided with a single layer of elastic mesh belt 26. The elastic mesh belt 26 is not closed at the side 25, that is, it has an opening, allowing the vehicle display screen to enter the elastic mesh belt 26. The edges of the elastic mesh belt 26 at other positions are fixed to the side clamps 2, but not fixed to the second flexible plate 19.
[0046] During the test, the vehicle-mounted display screen is first fixed to the central clamp 1, with both ends extending towards the two side clamps 2. The two side clamps 2 move towards the central clamp 1 along the first guide rail 4. Both ends of the vehicle-mounted display screen extend through the openings of the elastic mesh belts 26 on both sides, between the elastic mesh belts 26 and the second flexible plate 19. The protruding structure on the side of the vehicle-mounted display screen facing the second flexible plate 19 presses against the second flexible plate 19, causing the second flexible plate 19 to form a corresponding shape. The other side of the vehicle-mounted display screen faces the elastic mesh belt 26 and is limited and fixed by the elastic mesh belt 26, ensuring that the vehicle-mounted display screen is tightly attached to the second flexible plate 19. The side of the elastic mesh belt 26 that contacts the end of the vehicle-mounted display screen is fixed to the side clamps 2, preventing the vehicle-mounted display screen from protruding. It also provides a basis for the movement and positioning of the side clamps 2. That is, when the side clamps 2 move towards the central clamp 1, after the end of the vehicle-mounted display screen is stopped by the elastic mesh belt 26, the side clamps 2 move into position, and the slider limits and fixes the position of the side clamps 2.
[0047] The second positioning rod 21 is always inserted into the corresponding through hole. The second flexible plate 19 is kept upright by the second positioning rod 21 and the second support plate 23, and supports the vehicle display screen. The lengths of the second positioning rods 21 extending out of the through hole vary according to the shape of the deformed second flexible plate 19, achieving universality of the second curvature adjustment component. The length of the second flexible plate 19 is less than the length of the side clamp 2 to avoid affecting the fixation of the edge of the elastic mesh belt 26. The length of the second flexible plate 19 is 1 / 2 to 2 / 3 of the length of the side clamp 2.
[0048] The first positioning rod 20 and the second positioning rod 21 can also be deformed into plate-shaped components, and the through holes of the first support plate and the second support plate are correspondingly deformed into strip-shaped hollows.
[0049] Optionally, the auxiliary holding component further includes an auxiliary fixing part, which is located on the side clamping side 24 at one end away from the side side 25. The auxiliary fixing part includes a track group and a fixing block group. The track group includes three sub-tracks arranged vertically. The upper sub-track 7 is inclined from top to bottom toward the elastic mesh belt 26, the middle sub-track 8 is arranged horizontally, and the lower sub-track 9 is inclined from bottom to top toward the elastic mesh belt 26.
[0050] The fixing block group includes three fixing blocks: the upper fixing block 27 is detachably slidably connected to the upper sub-track 7, the middle fixing block 28 is detachably slidably connected to the middle sub-track 8, and the lower fixing block 10 is detachably slidably connected to the lower sub-track 9.
[0051] The side of the upper fixing block 27 facing the elastic mesh belt 26 is inclined from top to bottom in the opposite direction to the elastic mesh belt 26, the side of the lower fixing block 10 facing the elastic mesh belt 26 is inclined from bottom to top in the opposite direction to the elastic mesh belt 26, and the side of the middle fixing block 28 facing the elastic mesh belt 26 is a vertical side.
[0052] After the end of the vehicle-mounted display screen is fixed by the elastic mesh belt 26, an auxiliary support component is designed to strengthen the fixation of the display screen and prevent it from shaking during vibration testing. The choice of which sub-track and fixing block to use depends on the shape of the end of the display screen. If the end of the display screen is vertical, the middle sub-track 8 and the middle fixing block 28 are used; if the end of the display screen has a downward sloping arc, the upper sub-track 7 and the upper fixing block 27 are used; if the end of the display screen has an upward sloping arc, the lower sub-track 9 and the lower fixing block 10 are used. Each of the three fixing blocks is equipped with a limiting device; that is, after the fixing block abuts against the end of the display screen, the limiting device determines the position of the fixing block, preventing it from moving. The auxiliary support component enables rigid clamping and fixing of the vehicle-mounted display screen, which, together with the elastic mesh belt, further strengthens the fixation of the display screen.
[0053] The central clamp 1 and the two side clamps 2 of this invention each have clamping components, auxiliary components, and auxiliary holding components on both sides, and both sides can hold vehicle-mounted displays, that is, two identical vehicle-mounted displays can be tested simultaneously. Since the vehicle-mounted displays on both sides have the same structural shape, and the first guide rail 4 is located on the central axis of the central clamp 1, the elastic mesh belts 26 on both sides of the side clamps 2 can simultaneously fix the ends of the two vehicle-mounted displays on the same side.
[0054] Both the first flexible plate 18 and the second flexible plate 19 are made of flexible material, are deformable and elastic, and can return to their original shape. The four edges of the two flexible plates are fixed to their respective mounting surfaces. After the test, after the vehicle display screen is detached from the flexible plates, the first flexible plate 18 and the second flexible plate 19 can return to their original shape. After the elastic mesh belt 26 ages, it can be replaced with a new one. The upper and lower ends of the first support plate 2 are fixed to the top and bottom surfaces of the central clamp, respectively, and the upper and lower ends of the second support plate 23 are fixed to the top and bottom surfaces of the side clamp, respectively.
[0055] Optionally, the base plate 3 is provided with several bolt holes around its perimeter for connecting the vibration output component of the vibration testing device.
Claims
1. A universal vibration testing fixture for vehicle-mounted displays, characterized in that, It includes a central clamp and two side clamps on both sides, with a base plate located below the central clamp and the two side clamps; the base plate is equipped with a first guide rail for moving the position of the side clamps; The central clamp is equipped with a set of clamping components on both sides, and the side clamp is equipped with a set of auxiliary clamping components on both sides, for simultaneously clamping two vehicle-mounted displays for vibration testing; The clamping assembly includes a first base, a top support, and a first curvature adjustment assembly, with the first base located at the bottom of the central clamp. The top support is located on the upper part of the middle clamp and is used to fix the top of the vehicle display screen; the first curvature adjustment component is located between the first bottom support and the top support; The auxiliary support assembly includes a second base and a second curvature adjustment assembly above it, with the second base located at the bottom of the side clamp; The side of the middle clamp facing the two side clamps is the end side, and the other two sides are the clamping sides. The first arc adjustment component includes a first flexible plate and several first positioning rods. The central clamp is hollow. The first flexible plate is part of the wall surface of the corresponding clamping side. The side of the first flexible plate facing the vehicle display screen is the front, and the other side is the back. Several first positioning rods are evenly arranged on the back of the first flexible plate. The first flexible plate has a first support plate on one side of its back side. The first support plate is vertically installed inside the central clamp and has several through holes evenly distributed on its surface. The through holes correspond one-to-one with the positions of the first positioning rods. The first positioning rods pass through the through holes to fix the first positioning rods in the vertical direction. The side of the side clamp facing the vehicle display screen is the side clamping side, and the side facing the middle clamp is the side side. The second curvature adjustment component includes a second flexible plate, an elastic mesh belt, and several second positioning rods. The side clamp is hollow, and the second flexible plate is part of the wall surface of the corresponding side clamping side. The side of the second flexible plate facing the vehicle display screen is the front, and the other side is the back. Several second positioning rods are evenly arranged on the back of the second flexible plate. The second flexible plate has a second support plate on one side of its back side. The second support plate is vertically installed inside the side clamp and has several through holes evenly distributed on its surface. The through holes correspond one-to-one with the positions of the second positioning rods. The second positioning rods pass through the through holes to fix the second positioning rods in the vertical direction. The front side of the second flexible plate is provided with a single layer of elastic mesh belt. The elastic mesh belt is not closed at the side and has an opening, allowing the vehicle display screen to enter the elastic mesh belt. The edges of the elastic mesh belt at other positions are fixed to the side clamps.
2. The universal vibration test fixture for vehicle-mounted displays according to claim 1, characterized in that, The central clamp is a long strip-shaped clamping assembly located on the clamping side; the line connecting the two end sides is the length direction of the central clamp; The first base is located at the bottom of the clamping side and is used to support the bottom of the vehicle display screen.
3. The universal vibration test fixture for vehicle-mounted displays according to claim 2, characterized in that, The top support is located on the upper part of the clamping side and includes a horizontal top plate and two vertical second guide rails on both sides. The two second guide rails are respectively located at both ends of the clamping side, and the two ends of the horizontal top plate are slidably connected in the two second guide rails to realize the vertical movement of the horizontal top plate. The upper surface of the horizontal top plate is set on the third guide rail, which is parallel to the horizontal top plate, and the pusher is slidably connected inside the third guide rail.
4. The universal vibration test fixture for vehicle-mounted displays according to claim 2, characterized in that, The first guide rail passes through and is parallel to the central axis of the middle clamp along its length. The center of each of the two side clamps is provided with a slider. The side clamps are slidably connected to the first guide rail through the sliders and move closer to or further away from the middle clamp along the first guide rail.
5. The universal vibration test fixture for vehicle-mounted displays according to claim 1, characterized in that, The auxiliary support component is located on the side of the side clamp; the second bottom support is located at the bottom of the side of the side clamp and is used to assist in supporting the end of the vehicle display screen.
6. The universal vibration test fixture for vehicle-mounted displays according to claim 5, characterized in that, The auxiliary support component also includes an auxiliary fixing part, which is located at one end of the side clamping side away from the side. The auxiliary fixing part includes a track group and a fixing block group. The track group includes three sub-tracks arranged vertically. The upper sub-track is inclined from top to bottom toward the elastic mesh belt, the middle sub-track is horizontally arranged, and the lower sub-track is inclined from bottom to top toward the elastic mesh belt. The fixing block assembly includes three fixing blocks: the upper fixing block is detachably slidably connected to the upper sub-track, the middle fixing block is detachably slidably connected to the middle sub-track, and the lower fixing block is detachably slidably connected to the lower sub-track.
7. The universal vibration test fixture for vehicle-mounted displays according to claim 6, characterized in that, The side of the upper fixing block facing the elastic mesh belt is inclined from top to bottom in the opposite direction of the elastic mesh belt, the side of the lower fixing block facing the elastic mesh belt is inclined from bottom to top in the opposite direction of the elastic mesh belt, and the side of the middle fixing block facing the elastic mesh belt is a vertical side.