A PXI chassis anti-vibration bracket
The buffer mechanism, which combines damping shock absorbers and springs, solves the problem of insufficient buffering effect of existing PXI chassis brackets under strong vibration or impact, achieving effective protection of the chassis and improving the stability and vibration resistance of the bracket.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN VIEWSCIENCE OPTOELECTRONICS CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-07
AI Technical Summary
Existing PXI chassis brackets have limited buffering and shock absorption effects when exposed to strong vibrations or impacts, failing to effectively protect the internal equipment and leading to equipment failure.
The buffer mechanism, which combines damping shock absorbers and springs, initially buffers the squeezing force of the mounting base through the damping shock absorbers, while the springs assist in the reset. Combined with the buffer mechanism, it provides secondary buffering, reducing the force of vibration transmitted to the chassis.
It improves the stability and vibration resistance of the bracket, reduces the impact of vibration on the chassis, avoids equipment failure, and enhances the protection effect of the chassis.
Smart Images
Figure CN224469571U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PXI chassis technology, specifically to a PXI chassis vibration-resistant bracket. Background Technology
[0002] PXI chassis, as a carrier for test and measurement equipment integrating various precision electronic components and modules, are widely used in industrial automation, aerospace, and defense industries. In these application scenarios, the equipment often faces various vibration interferences from the outside world, such as mechanical vibrations in industrial sites, bumpy vibrations during vehicle operation, and sudden impact vibrations in the environment.
[0003] Currently, PXI chassis are usually fixed to the equipment using brackets. Existing brackets mostly use simple fixing structures and have relatively simple vibration resistance measures. They usually rely on only a few springs or rubber pads for shock absorption. When faced with strong vibrations or impacts, their buffering and shock absorption effects are limited and cannot provide comprehensive and reliable protection for PXI chassis. This can easily lead to failure of the internal equipment due to vibration. Therefore, we need to propose a vibration-resistant bracket for PXI chassis. Utility Model Content
[0004] The purpose of this utility model is to provide a vibration-damping bracket for a PXI chassis. By incorporating a damping shock absorber, the force exerted by the mounting base pressing against the support base can be buffered. After buffering, a spring assists the mounting base in quickly returning to its original position after vibration, preventing excessive displacement of the mounting base due to vibration and thus ensuring the stability of the PXI chassis. The buffering mechanism also buffers the vibration transmitted from the support base to the fixed base, reducing the impact of vibration on the fixed base and improving the stability of the bracket. Through this solution, the bracket can buffer the vibration received, reducing the force transmitted to the PXI chassis, thus protecting the PXI chassis and preventing equipment malfunctions caused by vibration, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a PXI chassis vibration-damping bracket, comprising a mounting base for mounting the PXI chassis and a buffering mechanism for auxiliary vibration damping. The upper surface of the mounting base is equipped with a fixing mechanism for fixing the PXI chassis. A support base is provided at the bottom of the mounting base. Damping shock absorbers are provided around the top of the support base, with the top of each damping shock absorber connected to the bottom of the mounting base. A spring is fitted on the outer surface of each damping shock absorber to assist the mounting base in resetting. A fixing base for connecting to equipment is provided at the bottom of the support base. The fixing base and the mounting base are connected via the buffering mechanism.
[0006] Preferably, the buffer mechanism includes an adjustment groove formed on the lower surface of the support base and an adjustment seat adapted to the adjustment groove. A buffer assembly for transmitting power to the adjustment seat is provided on one side of the adjustment seat. A connecting rod is provided at the bottom of the mounting base, and both ends of the connecting rod are rotatably connected to a connecting frame. The connecting rod is connected to the fixed base and the adjustment seat respectively through the connecting frame.
[0007] Preferably, the buffer assembly includes a second damping shock absorber located in the inner cavity of the adjustment groove. One end of the second damping shock absorber is connected to the inner side wall of the adjustment groove, and the other end of the second damping shock absorber is connected to the surface of the adjustment seat. A second spring is sleeved on the surface of the second damping shock absorber.
[0008] Preferably, the surface of the adjusting seat is provided with a support hole, and the inner cavity of the support hole is provided with a support rod that is adapted to the support hole. Both ends of the support rod are connected to the inner sidewall of the adjusting groove.
[0009] Preferably, the support base is provided with guide holes on all four sides, and the inner cavity of the guide hole is provided with a guide post that matches the guide hole. The top end of the guide post is connected to the bottom end of the mounting base, and the bottom end of the guide post is connected to a limit block.
[0010] Preferably, a shock-absorbing rubber pad is bonded and fixed to the lower surface of the support base. The shock-absorbing rubber pad is frame-shaped, and the surface of the shock-absorbing rubber pad has movable holes that are adapted to the guide holes.
[0011] Preferably, the fixing mechanism includes positioning seats symmetrically connected to the mounting base. The surface of the positioning seat is integrally formed with a threaded sleeve. The inner cavity of the threaded sleeve is threadedly connected to a self-locking screw. One end of the self-locking screw is connected to a turntable, and the other end of the self-locking screw is rotatably connected to a positioning plate. The positioning plate is disposed between the two sets of positioning seats.
[0012] Preferably, the upper surface of the positioning seat is provided with a sliding groove, and the inner cavity of the sliding groove is provided with a slider that is adapted to the sliding groove. The top end of the slider is welded and fixed to the bottom end of the positioning plate, and the slider is T-shaped.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model provides a vibration-damping bracket for a PXI chassis. Through the cooperation of a damping shock absorber and a spring, the force exerted by the mounting base pressing against the support base can be buffered. After buffering, the spring assists the mounting base in quickly returning to its original position after vibration, preventing excessive displacement of the mounting base due to vibration and thus affecting the stability of the PXI chassis. The buffering mechanism buffers the vibration transmitted from the support base to the fixed base, reducing the impact of vibration on the fixed base and improving the stability of the bracket. The fixing mechanism allows for the fixing of PXI chassis of different lengths. Through the above solutions, the bracket can buffer the received vibration, reducing the force transmitted to the PXI chassis, thus protecting the PXI chassis and preventing equipment malfunctions caused by vibration.
[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a top view of the structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the mounting base after disassembly and fixing.
[0019] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;
[0020] Figure 5 This is a structural schematic diagram of the support base of this utility model viewed from below.
[0021] In the diagram: 1. Mounting base; 2. Buffer mechanism; 21. Adjustment groove; 22. Adjustment seat; 23. Connecting rod; 24. Connecting frame; 25. Damping shock absorber II; 26. Spring II; 3. Fixing mechanism; 31. Positioning seat; 32. Threaded sleeve; 33. Self-locking screw; 34. Positioning plate; 4. Support seat; 5. Damping shock absorber I; 6. Spring I; 7. Fixing seat; 8. Support rod; 9. Guide hole; 10. Guide column; 11. Shock-absorbing rubber pad; 12. Slide groove; 13. Slider. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-5 This utility model provides a technical solution: a PXI chassis vibration-damping bracket, including a mounting base 1 for mounting the PXI chassis and a buffering mechanism 2 for auxiliary vibration buffering. The upper surface of the mounting base 1 is equipped with a fixing mechanism 3 for fixing the PXI chassis. The bottom end of the mounting base 1 is provided with a support base 4. Damping shock absorbers 5 are provided around the top of the support base 4. The top of the damping shock absorber 5 is bolted to the bottom end of the mounting base 1. The outer surface of the damping shock absorber 5 is fitted with a spring 6 for assisting the mounting base 1 in resetting. The bottom end of the support base 4 is provided with a fixing base 7 for connecting with the equipment. The fixing base 7 and the mounting base 1 are connected through the buffering mechanism 2.
[0024] First, the mounting base 7 is installed on the equipment. Then, the PXI chassis is placed on the mounting base 1 and fixed by the fixing mechanism 3. When vibration is transmitted to the bracket, the PXI chassis at the top is vibrated. During vibration, the PXI chassis compresses the mounting base 1 with its own weight. The mounting base 1 compresses the damping shock absorber 5 and spring 6 at the bottom. The damping shock absorber 5 initially buffers the force transmitted from the mounting base 1 to the support base 4. Then, the support base 4 transmits the force to the buffering mechanism 2. The buffering mechanism 2 further buffers the force on the support base 4. Through the above scheme, the bracket can buffer the vibration received, reduce the force transmitted to the PXI chassis, protect the PXI chassis, and prevent the equipment inside the PXI chassis from malfunctioning due to vibration.
[0025] The buffer mechanism 2 includes an adjustment groove 21 formed on the lower surface of the support base 4 and an adjustment seat 22 adapted to the adjustment groove 21. A buffer assembly for transmitting power to the adjustment seat 22 is provided on one side of the adjustment seat 22. A connecting rod 23 is provided at the bottom of the mounting base 1, and both ends of the connecting rod 23 are rotatably connected to connecting frames 24. One set of connecting frames 24 is bolted to the upper surface of the support base 4, and the other set of connecting frames 24 is bolted to the surface of the adjustment seat 22. When the support base 4 is compressed, it moves downward to press down on the connecting rod 23, causing the angle between the connecting rod 23 and the two sets of connecting frames 24 to change. After that, the connecting frame 24 at the bottom cannot move, so the connecting rod 23 can only transmit the force to the connecting frame 24 at the top. The buffer assembly is compressed by the adjustment seat 22, so that the buffer assembly buffers the compression force. The secondary buffering by the buffer assembly enhances the vibration resistance of the support and improves the vibration buffering effect of the support.
[0026] The buffer assembly includes a second damping shock absorber 25 located inside the adjusting groove 21. One end of the second damping shock absorber 25 is bolted to the inner wall of the adjusting groove 21, and the other end is bolted to the surface of the adjusting seat 22. A second spring 26 is sleeved on the surface of the second damping shock absorber 25. When the adjusting seat 22 moves within the adjusting groove 21, it compresses the second damping shock absorber 25 and the second spring 26. The second damping shock absorber 25 dissipates energy through its own damping effect. After the compression ends, the second spring 26 resets along with the second reset of the second damping shock absorber 25. Through the cooperation of the second damping shock absorber 25 and the second spring 26, the power transmitted by the adjusting seat 22 can be effectively buffered, enhancing the buffering effect of the buffer mechanism 2 and improving the vibration absorption capacity of the support.
[0027] The surface of the adjusting seat 22 is provided with a support hole, and the inner cavity of the support hole is provided with a support rod 8 that is adapted to the support hole. Both ends of the support rod 8 are welded and fixed to the inner side wall of the adjusting groove 21. Through the cooperation of the support hole and the support rod 8, the movement of the adjusting seat 22 is guided and supported, ensuring that the adjusting seat 22 can only move along the direction of the support rod 8, avoiding the adjustment seat 22 from deviating during the movement, and ensuring the stability and accuracy of the movement of the adjusting seat 22.
[0028] Guide holes 9 are provided around the support base 4. Guide posts 10 that are adapted to the guide holes 9 are provided in the inner cavity of the guide holes 9. The top end of the guide post 10 is fixed to the bottom end of the mounting base 1 with bolts. The bottom end of the guide post 10 is fixed with a limit block. When the mounting base 1 is vibrated and moves up and down, the guide post 10 slides up and down in the guide hole 9 of the support base 4, which guides the movement of the mounting base 1 and prevents the mounting base 1 from shifting laterally or shaking, thus improving the stability of the mounting base 1. The limit block can prevent the guide post 10 from coming out of the guide hole 9. The distance that the support base 4 moves downward through the guide post 10 can help to buffer the force of vibration.
[0029] A shock-absorbing rubber pad 11 is bonded and fixed to the lower surface of the support base 4. The shock-absorbing rubber pad 11 is frame-shaped, and the surface of the shock-absorbing rubber pad 11 has movable holes that match the guide hole 9. The shock-absorbing rubber pad 11 provides support between the support base 4 and the limiting block, preventing the limiting block from colliding with the support base 4 and causing vibration after reset, and buffering the vibration force generated after the limiting block is reset.
[0030] The fixing mechanism 3 includes positioning seats 31 symmetrically welded and fixed on the mounting base 1. The surface of the positioning seat 31 is integrally formed with a threaded sleeve 32. The inner cavity of the threaded sleeve 32 is threadedly connected to a self-locking screw 33. One end of the self-locking screw 33 is welded and fixed to a turntable. The other end of the self-locking screw 33 is rotatably connected to a positioning plate 34 through a bearing. The positioning plate 34 is set between the two sets of positioning seats 31. When the PXI chassis is placed on the mounting base 1, the turntable is rotated clockwise to drive the self-locking screw 33 to rotate. Through the cooperation between the self-locking screw 33 and the threaded sleeve 32, the self-locking screw 33 pushes the positioning plate 34 to move towards the surface of the PXI chassis, so that the positioning plates 34 on both sides clamp and fix the PXI chassis, so that the PXI chassis is installed on the mounting base 1, which provides convenience for the disassembly and assembly of the PXI chassis and the bracket.
[0031] This embodiment also includes a rubber pad adhered to the inner wall of the positioning plate 34 to prevent excessive clamping force from damaging the surface of the PXI chassis.
[0032] The upper surface of the positioning base 31 is provided with a groove 12. The inner cavity of the groove 12 is provided with a slider 13 that is adapted to the groove 12. The top end of the slider 13 is welded and fixed to the bottom end of the positioning plate 34. The slider 13 is T-shaped. When the positioning plate 34 moves, it drives the slider 13 to move in the groove 12. The bottom end of the positioning plate 34 is supported by the cooperation of the slider 13 and the groove 12, which improves the stability of the positioning plate 34 when it moves on the mounting base 1 and avoids the angle from shifting during positioning.
[0033] This embodiment also includes a scale line on the surface of the slide 12, which can be used to adjust the positioning accuracy when positioning the PXI chassis by observing the position of the positioning plate 34 on the scale line.
[0034] This embodiment also includes a damping shock absorber three fixedly connected around the fixed seat 7. The top of the damping shock absorber three is bolted to the bottom of the support seat 4. A spring three is sleeved on the outer surface of the damping shock absorber three. After the support seat 4 compresses the fixed seat 7, it is reset by the damping shock absorber three and the spring three, so that the angle between the connecting rod 23 and the two sets of connecting frames 24 is reset.
[0035] In practical application: First, the bracket is fixed to the equipment using the fixing seat 7 bolts. Then, the PXI chassis is placed on the mounting base 1. Rotating the turntable clockwise causes the self-locking screw 33 to rotate. The self-locking screws 33 on both sides push the positioning plate 34 to clamp and fix the PXI chassis. When the equipment vibration is transmitted to the PXI chassis, the PXI chassis transmits the vibration to the mounting base 1. The mounting base 1, affected by the vibration and weight, moves downward and compresses the damping shock absorber 5 and the spring 6. The damping of the damping shock absorber 5 provides initial buffering of the vibration force. At the same time, the mounting base 1 drives the guide column 10 to move downward. The downward movement of the guide column 10 helps to buffer the vibration force. Then, the vibration is transmitted to the support base 4. The support base 4 then... The support rod 8 is compressed, and the angle between the support rod 8 and the connecting frames 24 on both sides shifts after being compressed. The force is transmitted to the adjusting seat 22 through the connecting frame 24 at the top. The adjusting seat 22 compresses the second damping shock absorber 25 and the second spring 26. After the second damping shock absorber 25 and the second spring 26 are compressed, they are reset to their original position. After the support seat 4 compresses the fixed seat 7, it is reset through the third damping shock absorber and the third spring, so that the angle between the connecting rod 23 and the two sets of connecting frames 24 is reset. Through the above scheme, the bracket can buffer the vibration received, reduce the force transmitted to the PXI chassis, protect the PXI chassis, and prevent the equipment inside the PXI chassis from malfunctioning due to vibration.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A vibration-damping bracket for a PXI chassis, characterized in that, include: Mounting bracket (1) for mounting PXI chassis and buffer mechanism (2) for auxiliary vibration damping; The upper surface of the mounting base (1) is equipped with a fixing mechanism (3) for fixing the PXI chassis. The bottom end of the mounting base (1) is provided with a support base (4). The top of the support base (4) is provided with damping shock absorbers (5). The top of the damping shock absorber (5) is connected to the bottom end of the mounting base (1). The outer surface of the damping shock absorber (5) is fitted with a spring (6) for assisting the mounting base (1) in resetting. The bottom end of the support base (4) is provided with a fixed base (7) for connecting with the equipment. The fixed base (7) and the mounting base (1) are connected by a buffer mechanism (2).
2. The PXI chassis vibration-damping bracket according to claim 1, characterized in that: The buffer mechanism (2) includes an adjustment groove (21) opened on the lower surface of the support (4) and an adjustment seat (22) adapted to the adjustment groove (21). A buffer assembly for transmitting power to the buffer adjustment seat (22) is provided on one side of the adjustment seat (22). The bottom end of the mounting base (1) is provided with a connecting rod (23), and both ends of the connecting rod (23) are rotatably connected to a connecting frame (24). The connecting rod (23) is connected to the fixed base (7) and the adjusting base (22) respectively through the connecting frame (24).
3. The PXI chassis vibration-damping bracket according to claim 2, characterized in that: The buffer assembly includes a second damping shock absorber (25) located in the inner cavity of the adjustment groove (21). One end of the second damping shock absorber (25) is connected to the inner wall of the adjustment groove (21), and the other end of the second damping shock absorber (25) is connected to the surface of the adjustment seat (22). A second spring (26) is sleeved on the surface of the second damping shock absorber (25).
4. The PXI chassis vibration-damping bracket according to claim 3, characterized in that: The surface of the adjusting seat (22) is provided with a support hole, and the inner cavity of the support hole is provided with a support rod (8) that is adapted to the support hole. Both ends of the support rod (8) are connected to the inner side wall of the adjusting groove (21).
5. The PXI chassis vibration-damping bracket according to claim 1, characterized in that: The support base (4) is provided with guide holes (9) around its perimeter. The inner cavity of the guide hole (9) is provided with a guide post (10) that is compatible with the guide hole (9). The top end of the guide post (10) is connected to the bottom end of the mounting base (1), and the bottom end of the guide post (10) is connected to a limit block.
6. The PXI chassis vibration-damping bracket according to claim 5, characterized in that: The lower surface of the support base (4) is bonded with a shock-absorbing rubber pad (11). The shock-absorbing rubber pad (11) is frame-shaped, and the surface of the shock-absorbing rubber pad (11) is provided with a movable hole that matches the guide hole (9).
7. The PXI chassis vibration-damping bracket according to claim 1, characterized in that: The fixing mechanism (3) includes a positioning seat (31) symmetrically connected to the mounting base (1). The surface of the positioning seat (31) is integrally formed with a threaded sleeve (32). The inner cavity of the threaded sleeve (32) is threadedly connected with a self-locking screw (33). One end of the self-locking screw (33) is connected to a turntable. The other end of the self-locking screw (33) is rotatably connected to a positioning plate (34). The positioning plate (34) is set between the two sets of positioning seats (31).
8. A vibration-damping bracket for a PXI chassis according to claim 7, characterized in that: The upper surface of the positioning seat (31) is provided with a sliding groove (12), and the inner cavity of the sliding groove (12) is provided with a slider (13) that is compatible with the sliding groove (12). The top end of the slider (13) is welded and fixed to the bottom end of the positioning plate (34), and the slider (13) is T-shaped.