Abnormal sound prevention shock absorber structure

Abstract

The utility model relates to an abnormal sound prevention shock absorber structure which comprises a cylinder body, a piston rod is arranged on the cylinder body in a matched mode, a spring lower abutting assembly is arranged on the cylinder body, a spring upper abutting assembly is arranged at the upper end of the piston rod, and a spring is arranged between the spring lower abutting assembly and the spring upper abutting assembly. The spring lower abutting assembly comprises a metal supporting plate and a lower abutting seat, the metal supporting plate is welded and fixed to the cylinder body, the lower abutting seat is arranged on the upper side of the metal supporting plate in an attached mode, the upper end face of the lower abutting seat is arranged in an inclined mode and attached to the lower end of the spring, and the spring upper abutting assembly comprises an upper abutting seat. The lower end face of the upper abutting seat is matched with the upper end of the spring, the lower end face of the upper abutting seat is further provided with a notch for the upper end of the spring to be clamped in, the stability of a vibration reduction system can be improved, and the possibility of abnormal sound generation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, and in particular to a vibration damper structure for preventing abnormal noise. Background Technology

[0002] With the development of the automotive industry and people's increasing demands for driving comfort, automotive shock absorption systems have received much attention. The traditional return spring combination structure in shock absorbers has drawbacks, with prominent issues of frictional noise between the spring and the lower and upper spring abutments.

[0003] In existing automotive shock absorption systems, the lower spring stop is fixedly connected to the lower end of the spring outside the shock absorber cylinder, while the upper spring stop is fixed to the upper end of the piston rod and mates with the upper end of the spring. When a vehicle is in motion, the road surface is complex, and the suspension frequently extends and retracts, causing sliding friction between the two ends of the spring and the stop.

[0004] Traditional spring abutments are mostly simple planar structures with small contact areas and a rigid contact mechanism. High-frequency spring contraction and extension easily leads to localized pressure concentration, causing wear and peeling of the spring wire coating. Direct metal-to-metal contact increases the coefficient of friction. Furthermore, during vehicle travel, the spring is prone to collisions and jamming with the abutment under sudden impact forces, resulting in harsh friction noises. This not only severely affects the passenger experience but also easily causes wear on damping system components, reducing the reliability and lifespan of the entire damping system. Therefore, this application addresses these technical problems with improvements. Utility Model Content

[0005] This utility model proposes a vibration damper structure to prevent abnormal noise, which solves the above-mentioned problems existing in the use of the prior art.

[0006] The technical solution of this utility model is implemented as follows: A vibration damper structure for preventing abnormal noise includes a cylinder body, a piston rod is fitted on the cylinder body, a lower spring support assembly is provided on the cylinder body, an upper spring support assembly is provided at the upper end of the piston rod, a spring is provided between the lower spring support assembly and the upper spring support assembly, the lower spring support assembly includes a metal support plate and a lower support seat, the metal support plate is welded and fixed to the cylinder body, the lower support seat is fitted against the upper side of the metal support plate, the upper end face of the lower support seat is inclined and fits against the lower end of the spring, the upper spring support assembly includes an upper support seat, the lower end face of the upper support seat matches the upper end of the spring, and the lower end face of the upper support seat is also provided with a slot for the upper end of the spring to be inserted.

[0007] Preferably, the upper abutment assembly further includes a support ring seat, a limiting metal ring plate, and a fixing seat. A reinforcing metal plate is fixedly connected inside the fixing seat. The upper end of the piston rod passes through the reinforcing metal plate and is threaded with a nut. The nut fixes the reinforcing metal plate to the piston rod. The limiting metal ring plate is fitted against the lower end and outer wall of the fixing seat. The support ring seat is limited and positioned below the limiting metal ring plate. The upper abutment seat is sleeved on the support ring seat, and the upper side of the upper abutment seat abuts against the support ring seat.

[0008] Preferably, the limiting metal ring plate has a limiting step on its lower side, a buffer ring is provided on the limiting step, and a limiting plate that abuts against the lower side of the buffer ring is integrally formed on the supporting ring seat.

[0009] Preferably, the upper side of the support ring seat has an annular groove, the annular groove has an elastic ring, and the limiting metal ring plate has a limiting outer edge that extends into the annular groove and abuts against the upper side of the elastic ring.

[0010] Preferably, an upper metal pressure plate is fixedly connected to the upper side of the limiting metal ring plate, and the upper metal pressure plate presses against the fixed seat.

[0011] Preferably, the upper and lower end faces of the upper support seat are both inclined in a spiral shape, the upper support seat includes a drop slope, and the lower end face of the support ring seat is in contact with the upper end face of the upper support seat and the drop slope.

[0012] Preferably, a reinforcing support plate is welded and fixed to the underside of the metal support plate of the cylinder body, and a number of reinforcing ribs are fixedly connected between the reinforcing support plate and the cylinder body.

[0013] Preferably, the lower abutment seat has an inner abutment protrusion that protrudes upward and fits against the inner side of the spring.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] 1. The lower spring support assembly adopts a combination design of a metal support plate and a lower support seat. The metal support plate is welded to the cylinder body to ensure stable support, and the lower support seat is attached to the upper side of the metal support plate. The upper end face of the lower support seat is inclined and fits against the lower end of the spring. Compared with the traditional planar structure, this increases the contact area with the spring, making the spring force more even, effectively alleviating local pressure concentration, reducing wear on the spring steel wire coating, and lowering the coefficient of friction, thereby preventing friction noise caused by direct metal contact. Meanwhile, the lower end face of the upper support seat of the upper spring support assembly matches the upper end of the spring and has a slot, which can accurately position the upper end of the spring, preventing the spring from shifting or wobbling during extension and contraction, further reducing unnecessary friction between the spring and the support seat, improving the stability of the vibration damping system, and reducing the possibility of abnormal noise.

[0016] 2. The lower side of the limiting metal ring plate is equipped with a limiting step and a buffer ring. The limiting plate on the support ring seat abuts against the lower side of the buffer ring. In addition, an annular groove is opened on the support ring seat and an elastic ring is set. The limiting outer edge of the limiting metal ring plate extends to the annular groove and abuts against the elastic ring. This structural design makes the contact between the support ring seat and the limiting metal ring plate more elastic and buffered. It reduces abnormal noise caused by friction and collision between the support ring seat and the limiting metal ring plate, and improves the reliability of the entire vibration reduction system.

[0017] 3. The upper and lower end faces of the upper support seat are both spirally inclined and include a drop slope, which fits tightly with the lower end face of the support ring seat. This structure makes the spring fit more snugly on the upper support seat and the force distribution more reasonable. At the same time, it prevents relative rotation between the upper support seat and the support ring seat. During the spring extension and contraction process, the structure of the upper support seat can guide the spring to deform smoothly, reduce friction noise caused by spring twisting and jamming, and optimize the vibration reduction effect.

[0018] 4. The cylinder body is welded and fixed with a reinforcing support plate on the lower side of the metal support plate, and several reinforcing ribs are set, which greatly improves the load-bearing capacity of the metal support plate, prevents the metal support plate from deforming and causing structural abnormalities, and thus enhances the stability of the entire spring lower support assembly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 for Figure 2 A magnified view of the upper part;

[0023] Figure 4 This is a schematic diagram of the structure in this utility model where the spring is exploded.

[0024] Figure 5 This is an exploded structural diagram of the upper support seat, the upper support seat, and the limiting metal ring plate in this utility model;

[0025] Figure 6 This is a schematic diagram of the upper abutment seat structure in this utility model.

[0026] In the diagram: 1. Cylinder body; 2. Piston rod; 3. Spring; 4. Nut; 51. Metal support plate; 52. Lower abutment seat; 521. Inner abutment protrusion; 53. Reinforcing support plate; 531. Reinforcing rib; 61. Upper abutment seat; 611. Groove; 612. Drop slope; 62. Support ring seat; 621. Limiting plate; 622. Annular groove; 63. Elastic ring; 64. Limiting metal ring plate; 641. Limiting step; 642. Limiting outer edge; 65. Buffer ring; 66. Fixed seat; 67. Reinforcing metal plate; 68. Upper metal pressure plate. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example:

[0029] like Figures 1 to 6 As shown, this utility model discloses a vibration damper structure for preventing abnormal noise. It includes a cylinder body 1, a piston rod 2 mounted on the cylinder body 1, a lower spring support assembly on the cylinder body 1, an upper spring support assembly on the upper end of the piston rod 2, and a spring 3 between the lower spring support assembly and the upper spring support assembly. Specifically, the lower spring support assembly includes a metal support plate 51 and a lower support seat 52. The metal support plate 51 is welded and fixed to the cylinder body 1, and the lower support seat 52 is fitted against the upper side of the metal support plate 51. The upper end face of the lower support seat 52 is inclined and fits against the lower end of the spring 3. It should be noted that the lower support seat 52 and the metal support plate 51 are both inclined. Compared with the traditional planar structure, this structure increases the contact area with the spring 3, making the spring 3 more evenly stressed, effectively alleviating local pressure concentration, reducing wear of the steel wire coating of the spring 3, and reducing the coefficient of friction, thereby preventing frictional noise caused by direct contact between the metal and the lower support seat 52. In addition, the upper spring support assembly includes an upper support seat 61, the lower end face of which matches the upper end of the spring 3. The lower end face of the upper support seat 61 is also provided with a slot 611 for the upper end of the spring 3 to be inserted. The slot 611 can accurately position the upper end of the spring 3, prevent the spring 3 from shifting or shaking during extension and retraction, further reduce unnecessary friction between the spring and the upper and lower support seats, improve the stability of the vibration damping system, and reduce the possibility of abnormal noise.

[0030] Furthermore, the upper abutment assembly also includes a support ring seat 62, a limiting metal ring plate 64, and a fixing seat 66. A reinforcing metal plate 67 is fixedly connected inside the fixing seat 66, and the upper end of the piston rod 2 passes through the reinforcing metal plate 67 and is threadedly connected to a nut 4. The nut 4 fixes the reinforcing metal plate 67 to the piston rod 2. The limiting metal ring plate 64 is fitted against the lower end and outer wall of the fixing seat 66, while the support ring seat 62 is limited and positioned below the limiting metal ring plate 64. The upper abutment seat 61 is sleeved on the support ring seat 62, and the upper side of the upper abutment seat 61 abuts against the support ring seat 62. Through the above structural arrangement, the upper abutment assembly is structurally stable and reliable, providing a stable support environment for the upper abutment seat 61, limiting its displacement, ensuring that all components work together during the extension and contraction of the spring 3, and reducing abnormal noise caused by component shaking and collision.

[0031] The specific structure of the support ring seat 62 being positioned under the limiting metal ring plate 64 is as follows: a limiting step 641 is provided on the lower side of the limiting metal ring plate 64, and a buffer ring 65 is provided on the limiting step 641. The supporting ring seat 62 has an integrally formed limiting plate 621 that abuts against the lower side of the buffer ring 65. In addition, an annular groove 622 is formed on the upper side of the supporting ring seat 62, and an elastic ring 63 is provided in the annular groove 622. The limiting metal ring plate 64 has a limiting outer edge 642 that extends into the annular groove 622 and abuts against the upper side of the elastic ring 63. Through the above structural design, the contact between the supporting ring seat 62 and the limiting metal ring plate 64 is more elastic and buffered. This reduces abnormal noise caused by friction and collision between the supporting ring seat 62 and the limiting metal ring plate 64, and improves the reliability of the entire vibration damping system.

[0032] Furthermore, an upper metal pressure plate 68 is fixedly connected to the upper side of the limiting metal ring plate 64. The upper metal pressure plate 68 presses against the fixed seat 66, which can keep the limiting metal ring plate 64 and the fixed seat 66 in a fixed connection relationship and prevent the limiting metal ring plate 64 and the fixed seat 66 from shaking.

[0033] In this utility model, the upper and lower end faces of the upper support seat 61 are both inclined in a spiral shape. The upper support seat 61 includes a drop slope 612. The lower end face of the support ring seat 62 is in contact with the upper end face of the upper support seat 61 and the drop slope 612. This structure makes the installation of the spring 3 on the upper support seat 61 more close and the force distribution more reasonable. At the same time, it prevents relative rotation between the upper support seat 61 and the support ring seat 62. During the extension and retraction of the spring 3, the structure of the upper support seat 61 can guide the spring 3 to deform smoothly, reduce friction noise caused by the twisting and jamming of the spring 3, and optimize the vibration reduction effect.

[0034] A reinforcing support plate 53 is welded and fixed to the lower side of the metal support plate 51 on the cylinder body 1. Several reinforcing ribs 531 are fixedly connected between the reinforcing support plate 53 and the cylinder body 1. This structure greatly improves the load-bearing capacity of the metal support plate 51, prevents the metal support plate 51 from deforming and causing structural abnormalities, and thus enhances the stability of the entire spring lower support assembly.

[0035] In this utility model, the lower support seat 52 is provided with an inner support protrusion 521 that protrudes upward and fits against the inner side of the spring 3. The inner support protrusion 521 assists in positioning the spring 3 from the inside, preventing the spring 3 from undergoing radial displacement during extension and retraction, ensuring that the spring 3 and the lower support seat 52 always maintain a good fit, reducing friction and lowering the risk of abnormal noise.

[0036] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration damper structure for preventing abnormal noise, comprising a cylinder body, a piston rod fitted on the cylinder body, a lower spring abutment assembly on the cylinder body, an upper spring abutment assembly at the upper end of the piston rod, and a spring between the lower spring abutment assembly and the upper spring abutment assembly, characterized in that: The lower spring support assembly includes a metal support plate and a lower support seat. The metal support plate is welded and fixed to the cylinder body. The lower support seat is fitted against the upper side of the metal support plate. The upper end face of the lower support seat is inclined and fits against the lower end of the spring. The upper spring support assembly includes an upper support seat. The lower end face of the upper support seat matches the upper end of the spring. The lower end face of the upper support seat is also provided with a slot for the upper end of the spring to be inserted.

2. The vibration damper structure for preventing abnormal noise according to claim 1, characterized in that: The upper abutment assembly also includes a support ring seat, a limiting metal ring plate, and a fixing seat. A reinforcing metal plate is fixedly connected inside the fixing seat. The upper end of the piston rod passes through the reinforcing metal plate and is threaded with a nut. The nut fixes the reinforcing metal plate to the piston rod. The limiting metal ring plate is fitted against the lower end and outer wall of the fixing seat. The support ring seat is limited and positioned under the limiting metal ring plate. The upper abutment seat is sleeved on the support ring seat, and the upper side of the upper abutment seat abuts against the support ring seat.

3. The vibration damper structure for preventing abnormal noise according to claim 2, characterized in that: The lower side of the limiting metal ring plate is provided with a limiting step, and a buffer ring is provided on the limiting step. The supporting ring seat is integrally formed with a limiting plate that abuts against the lower side of the buffer ring.

4. The vibration damper structure for preventing abnormal noise according to claim 2, characterized in that: The upper side of the support ring seat is provided with an annular groove, and an elastic ring is provided in the annular groove. The limiting metal ring plate is provided with a limiting outer edge that extends to the annular groove and abuts against the upper side of the elastic ring.

5. The structure of the anti-noise vibration damper according to claim 2, characterized in that: An upper metal pressure plate is fixedly connected to the upper side of the limiting metal ring plate, and the upper metal pressure plate presses against the fixed base.

6. The vibration damper structure for preventing abnormal noise according to claim 2, characterized in that: The upper and lower end faces of the upper support seat are both inclined in a spiral shape. The upper support seat includes a drop slope. The lower end face of the support ring seat is in contact with the upper end face of the upper support seat and the drop slope.

7. The vibration damper structure for preventing abnormal noise according to claim 1, characterized in that: The cylinder body has a reinforcing support plate welded and fixed to the underside of the metal support plate, and a number of reinforcing ribs are fixedly connected between the reinforcing support plate and the cylinder body.

8. The vibration damper structure for preventing abnormal noise according to claim 1, characterized in that: The lower support seat is provided with an inner support protrusion that protrudes upward and fits against the inside of the spring.

Images