Automobile damping shock absorber

Abstract

The utility model discloses an automobile damping shock absorber which comprises a bottom cylinder and a sleeve, a buffering cavity is formed in the sleeve, a partition plate is installed on a piston rod, a flow hole is formed in the partition plate, a rotating plate is installed on the partition plate in a sliding mode, a through hole is formed in the rotating plate, and the through hole moves along with the rotating plate and is vertically staggered with the flow hole. Damping oil is injected into the buffer cavity, when the piston rod moves up and down in the sleeve for damping, the damping oil flows up and down in the buffer cavity through the flow hole and the through hole which correspond up and down, and then stable damping force is provided to achieve the damping effect on an automobile. When an automobile runs on a bumpy road section, the flow speed and pressure of damping oil passing through the flow holes and the through holes are increased, the flowing damping oil extrudes the rotating plate to slide, so that the through holes and the flow holes which are distributed up and down are staggered, the hole diameter of the damping oil flowing up and down is reduced, the damping force of the damper is increased, and the damping effect is improved. Therefore, the bumping of the automobile can be better inhibited.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive shock absorption, in particular to an automotive damping shock absorber. Background Art

[0002] In order to improve the ride comfort and smoothness of a vehicle, shock absorbers are generally installed on the suspension system of the vehicle. When the vehicle is moving, the buffer spring absorbs and stores the vibration energy of the vehicle, and the damping oil inside the shock absorber flows as the vehicle moves up and down to generate a damping force inside the shock absorber, thereby consuming the vibration energy of the vehicle, so as to play a role in buffering and damping the vehicle.

[0003] In order to meet the comfort requirements when the vehicle is driving on relatively smooth roads such as in cities, the damping force of the shock absorber is generally set to be small. Because when the damping force of the automotive shock absorber is small, the vehicle driving will be more comfortable, so as to avoid the shock absorber being too hard and affecting the driving experience.

[0004] However, when the vehicle is driving on muddy and uneven roads, if the damping force of the shock absorber is small, it will lead to poor shock absorption effect of the vehicle, exacerbate the bumping and instability of the vehicle body, and affect the driving experience and safety. In summary, the current shock absorbers have poor adaptive performance and cannot well meet the comfort and safety requirements for driving on different roads. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide an automotive damping shock absorber.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automotive damping shock absorber includes a bottom cylinder and a sleeve arranged oppositely. A buffer spring is arranged between the bottom cylinder and the sleeve. A piston rod fixed on the bottom cylinder extends into the sleeve. A buffer cavity is formed in the sleeve. A cover for closing the buffer cavity is installed on the sleeve. A partition is installed on the piston rod and located in the buffer cavity. The partition divides the buffer cavity into upper and lower parts. Flow holes for communicating the upper and lower parts of the buffer cavity are formed on the partition. A rotating plate is slidably installed on the partition. A through hole corresponding to the position of the flow hole is formed on the rotating plate. The through hole moves with the rotating plate and is vertically staggered with the flow hole.

[0008] Preferably, a sliding cavity is formed on the partition. The rotating plate is slidably arranged in the sliding cavity. The through hole and the flow hole are vertically corresponding. A spring for abutting against the rotating plate is installed on one side of the sliding cavity. The rotating plate can displace by squeezing the spring.

[0009] Preferably, an inclined surface is arranged on the rotating plate and located on the side wall of the through hole.

[0010] Preferably, an installation cavity for placing a spring is formed on one side of the sliding cavity. The spring abuts against one side of the rotating plate, and the other side of the rotating plate abuts against the side surface of the sliding cavity.

[0011] Preferably, the number of the partition plates is two, and the rotating plate is slidably installed in the upper and lower partition plates.

[0012] Preferably, a cover plate is installed on the sealing cover, and a sealing ring is arranged between the sealing cover and the cover plate. The cover plate presses the sealing ring so that the inner circumference of the sealing ring abuts against the outer circumference of the piston rod.

[0013] Preferably, a convex ring is arranged on the sealing cover, and a clamping ring corresponding to the position of the convex ring is arranged on the cover plate. The cover plate is fixed to the convex ring through the clamping ring.

[0014] Preferably, the clamping ring is located on the outer circumference of the convex ring and is arranged at an interval from the sleeve.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By injecting shock-absorbing oil into the buffer cavity, the partition plate installed on the piston rod is arranged in the buffer cavity, flow holes are formed in the partition plate, and through holes are formed in the rotating plate slidably installed on the partition plate. When the piston rod moves up and down in the sleeve for shock absorption, the piston rod drives the partition plate to move synchronously, and the shock-absorbing oil flows up and down in the buffer cavity through the flow holes and through holes corresponding up and down, so as to provide a stable damping force to achieve the shock-absorbing effect on the vehicle and make the driving of the vehicle more comfortable; when the vehicle is driving on a relatively bumpy road section, the stroke and frequency of the up and down movement of the piston rod are increased, and then the flow rate and pressure of the shock-absorbing oil passing through the flow holes and through holes are increased. The flowing shock-absorbing oil squeezes the rotating plate to slide, so that the through holes and flow holes distributed up and down are staggered with each other, so as to reduce the aperture size of the up and down flow of the shock-absorbing oil. Furthermore, by reducing the aperture of the shock-absorbing oil flow, the damping force of the shock absorber is increased, and thus the vehicle bump can be better suppressed, realizing the adaptive adjustment of the shock absorber, so that the vehicle can meet the requirements of comfort and safety when driving on different road sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is a schematic cross-sectional view of the present utility model;

[0019] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0020] Figure 4 is Figure 2 an enlarged schematic view of part B in

[0021] Figure 5Explosion schematic diagram of the partition plate and the rotating plate of the present utility model;

[0022] Figure 6 Schematic diagram of the cooperation between the partition plate and the rotating plate of the present utility model Figure 1 ;

[0023] Figure 7 Schematic diagram of the cooperation between the partition plate and the rotating plate of the present utility model Figure 2 .

[0024] In the figure: bottom cylinder 1, piston rod 11, partition plate 12, flow hole 121, sliding cavity 122, installation cavity 123, installation hole 124, bolt 13, rotating plate 14, through hole 141, inclined surface 142, spring 15, sleeve 2, buffer cavity 21, sealing cover 3, convex ring 31, cover plate 4, snap ring 41, sealing ring 5, buffer spring 6. Specific embodiments

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] In the description of this specification, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0027] As Figures 1 to 7 shown, an automotive damping shock absorber includes a bottom cylinder 1 and a sleeve 2 arranged opposite to each other. The sleeve 2 is a piston cylinder with an open lower end. A buffer spring 6 is arranged between the bottom cylinder 1 and the sleeve 2. A piston rod 11 extending into the sleeve 2 is fixed on the bottom cylinder 1. The piston rod 11 is fixedly installed on the bottom cylinder 1. A buffer cavity 21 is formed in the sleeve 2. A damping oil for shock absorption and buffering is injected into the buffer cavity 21. A sealing cover 3 for closing the buffer cavity 21 is installed on the sleeve 2. The sealing cover 3 is used to close the lower port of the sleeve 2 to achieve relative sealing of the buffer cavity 21.

[0028] A cover plate 4 is installed on the sealing cover 3. The cover plate 4 is arranged in the buffer cavity 21 and fixedly installed on the sealing cover 3. A sealing ring 5 is arranged between the sealing cover 3 and the cover plate 4. The cover plate 4 presses the sealing ring 5 so that the inner circumference of the sealing ring 5 abuts against the outer circumference of the piston rod 11. Through the arrangement of the sealing ring 5, the outer circumference of the piston rod 11 is sealed to prevent the damping oil in the buffer cavity 21 from leaking out along the outer circumference of the piston rod 11.

[0029] A convex ring 31 is provided on the cover 3, and a snap ring 41 corresponding to the position of the convex ring 31 is provided on the cover plate 4. The snap ring 41 is located on the outer periphery of the convex ring 31 and is spaced apart from the sleeve 2. The cover plate 4 is fixed on the convex ring 31 through the snap ring 41, and is snap-fitted and fixed on the convex ring 31, so that the installation of the cover plate 4 is relatively reliable.

[0030] Reference Figure 2 , Figure 3 , Figure 5 As shown, a partition 12 located in the buffer chamber 21 is installed on the piston rod 11. The number of the partitions 12 is two, and the two partitions 12 are arranged oppositely. One of the partitions 12 is fixed on the piston rod 11, and specifically, it can be fixed on the piston rod 11 by welding.

[0031] A plurality of vertically corresponding through holes 124 are formed in the partition 12, and corresponding bolts 13 are arranged on the through holes 124. The two partitions 12 are fixed to each other by the bolts 13 passing through the through holes 124.

[0032] A rotating plate 14 is slidably installed on the partition 12. The rotating plate 14 is slidably installed in the upper and lower partitions 12. A sliding cavity 122 is formed in the partition 12, and the rotating plate 14 is slidably arranged in the sliding cavity 122. A spring 15 abutting against the rotating plate 14 is installed on one side of the sliding cavity 122.

[0033] Specifically, an installation cavity 123 for placing the spring 15 is formed on one side of the sliding cavity 122. One end of the spring 15 is fixed to the installation cavity 123, and the other end of the spring 15 extends out of the installation cavity 123 and abuts against the rotating plate 14. At this time, the spring 15 abuts against one side of the rotating plate 14, and the other side of the rotating plate 14 abuts against the side surface of the sliding cavity 122 (refer to the state shown in Figure 6 ).

[0034] The outer periphery of the partition 12 is attached to the inner periphery of the sleeve 2. The partition 12 divides the buffer chamber 21 vertically. A flow hole 121 communicating with the buffer chamber 21 up and down is formed in the partition 12. A through hole 141 corresponding to the position of the flow hole 121 is formed in the rotating plate 14. The flow hole 121 and the through hole 141 cooperate with each other to form an aperture for the damping oil to flow up and down.

[0035] When the rotating plate 14 abuts against the side surface of the sliding cavity 122 on the side far from the spring 15 (such as the state shown in Figure 6 ), the through hole 141 and the flow hole 121 are vertically distributed correspondingly. At this time, the aperture formed by the through hole 141 and the flow hole 121 for the damping oil to flow up and down is the largest, and the damping force of the shock absorber is also smaller.

[0036] Furthermore, when the shock absorber of the vehicle is working during driving, the piston rod 11 moves up and down in the sleeve 2 for shock absorption. At the same time, the piston rod 11 drives the partition plate 12 to move synchronously. The shock-absorbing oil flows up and down in the buffer chamber 21 through the corresponding flow holes 121 and through holes 141, thereby providing a stable damping force to achieve the shock-absorbing effect on the vehicle and making the driving of the vehicle more comfortable.

[0037] The rotating plate 14 can squeeze the spring 15 to displace, that is, the through hole 141 displaces with the rotating plate 14 and is vertically staggered with the flow hole 121. At this time, the aperture formed by the through hole 141 and the flow hole 121 for the shock-absorbing oil to flow through decreases relatively (refer to Figures 6 to 7 the change).

[0038] Specifically, the rotating plate 14 is provided with inclined surfaces 142. The inclined surfaces 142 are arranged on the side walls of the through holes 141. There are two inclined surfaces 142 arranged vertically and correspondingly, and they correspond to the upper and lower two flow holes 121.

[0039] When the vehicle is driving on a relatively bumpy road section, the amplitude and frequency of the up-and-down movement of the piston rod 11 increase, so that the flow rate and pressure of the shock-absorbing oil passing through the flow hole 121 and the through hole 141 increase. And as the shock-absorbing oil flows up and down, the pressure of the flowing shock-absorbing oil acts on the inclined surface 142. When the pressure is greater than the abutting force of the spring 15, the rotating plate 14 squeezes the spring 15 to displace, that is, the flowing shock-absorbing oil squeezes the rotating plate 14 to slide, and then the through holes 141 and the flow holes 121 distributed up and down are staggered with each other.

[0040] At this time, the aperture formed by the through hole 141 and the flow hole 121 for the shock-absorbing oil to flow through decreases relatively. And because the aperture for the shock-absorbing oil to flow through is reduced, on the contrary, the resistance of the shock-absorbing oil flowing up and down is increased, that is, the damping force of the shock absorber is increased. Furthermore, it can better suppress the bumps of the vehicle. Therefore, when the vehicle is driving on a relatively bumpy road section, it can adaptively adjust the magnitude of the damping force of the shock absorber to effectively absorb shocks and ensure the comfort and safety of driving.

[0041] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automotive damping shock absorber, comprising a bottom cylinder (1) and a sleeve (2) arranged opposite to each other, a buffer spring (6) is arranged between the bottom cylinder (1) and the sleeve (2), a piston rod (11) extending into the sleeve (2) is fixed on the bottom cylinder (1), and it is characterized in that: A buffer cavity (21) is formed inside the sleeve (2). A cover (3) for closing the buffer cavity (21) is installed on the sleeve (2). A partition plate (12) located inside the buffer cavity (21) is installed on the piston rod (11). The partition plate (12) divides the buffer cavity (21) into upper and lower parts. A flow hole (121) for communicating the upper and lower parts of the buffer cavity (21) is formed on the partition plate (12). A rotating plate (14) is slidably installed on the partition plate (12). A through hole (141) corresponding to the position of the flow hole (121) is formed on the rotating plate (14). The through hole (141) displaces with the rotating plate (14) and is vertically staggered with the flow hole (121).

2. The automotive damping shock absorber according to claim 1, wherein: A sliding cavity (122) is formed on the partition plate (12). The rotating plate (14) is slidably arranged inside the sliding cavity (122). The through hole (141) and the flow hole (121) are vertically corresponding and distributed. A spring (15) for abutting against the rotating plate (14) is installed on one side of the sliding cavity (122). The rotating plate (14) can displace by squeezing the spring (15).

3. The automotive damping shock absorber according to claim 2, characterized in that: An inclined surface (142) is arranged on the rotating plate (14). The inclined surface (142) is arranged on the side wall of the through hole (141).

4. The automotive damping shock absorber according to claim 2, characterized in that: An installation cavity (123) for placing the spring (15) is formed on one side of the sliding cavity (122). The spring (15) abuts against one side of the rotating plate (14). The other side of the rotating plate (14) abuts against the side surface of the sliding cavity (122).

5. The automotive damping shock absorber according to claim 1, wherein: The number of the partition plates (12) is two. The rotating plate (14) is slidably installed inside the upper and lower partition plates (12).

6. The automotive damping shock absorber according to claim 1, wherein: A cover plate (4) is installed on the cover (3). A sealing ring (5) is arranged between the cover (3) and the cover plate (4). The cover plate (4) squeezes the sealing ring (5) so that the inner circumference of the sealing ring (5) abuts against the outer circumference of the piston rod (11).

7. The automotive damping shock absorber according to claim 6, characterized in that: A convex ring (31) is arranged on the cover (3). A clamping ring (41) corresponding to the position of the convex ring (31) is arranged on the cover plate (4). The cover plate (4) is fixed on the convex ring (31) through the clamping ring (41).

8. The automotive damping shock absorber according to claim 7, characterized in that: The clamping ring (41) is located on the outer circumference of the convex ring (31) and is arranged at an interval from the sleeve (2).

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