CN215950226U - Automobile shock absorber with good temperature characteristic - Google Patents
Automobile shock absorber with good temperature characteristic Download PDFInfo
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- CN215950226U CN215950226U CN202122550384.2U CN202122550384U CN215950226U CN 215950226 U CN215950226 U CN 215950226U CN 202122550384 U CN202122550384 U CN 202122550384U CN 215950226 U CN215950226 U CN 215950226U
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Abstract
The utility model discloses an automobile shock absorber with good temperature characteristics, wherein a sealing element is arranged at the upper end of an oil storage cylinder, a protective cover is arranged on the periphery of the upper part of the oil storage cylinder, a guide part, a working cylinder and a bottom valve part are sequentially arranged in the oil storage cylinder from top to bottom, a base is welded at the bottom of the oil storage cylinder, a piston rod and a piston assembly are arranged in the working cylinder, and the piston rod penetrates through the sealing element and the guide part and extends into the working cylinder; the piston assembly comprises a piston, a limiting sleeve, a valve plate spring and a sealing valve plate are arranged above the piston, a first adjusting valve plate, a first heat-sensitive elastic element, a gasket and a nut are arranged below the piston, and the piston is fixedly arranged at the lower end of the piston rod through the nut; the bottom valve component comprises a valve seat, the valve seat is arranged on the base, a bracket is arranged above the valve seat, and a bottom valve spring, a spring seat, a second thermosensitive elastic element and a second adjusting valve plate are sequentially arranged between the bracket and the valve seat from top to bottom; the damping force of the shock absorber has good thermal stability, and the stability in work is improved.
Description
Technical Field
The utility model relates to the technical field of automobile shock absorbers, in particular to an automobile shock absorber with good temperature characteristics.
Background
Along with social development and technical progress, people have higher and higher requirements on the performance of automobiles, and pay more and more high attention to the shock absorbers for improving the running safety, smoothness and comfort of the automobiles and the performance of the shock absorbers, so that people are promoted to research and develop new-structure and high-performance automobile shock absorbers to meet the market requirements. The shock absorber with good damping characteristics can be well matched with an automobile suspension or a mechanism, and the amplitude and frequency of automobile running vibration can be quickly attenuated, so that the best shock absorption effect is achieved. The temperature characteristic of the conventional automobile shock absorber is poor, and in actual working operation, a large amount of heat energy is generated due to the action of damping force, so that the temperature of the shock absorber is increased, the viscosity of oil liquid in the shock absorber is greatly reduced, and the damping force value of the shock absorber is reduced. The damping characteristic deviates from a good matching point with a suspension, and the ride comfort, the comfort and the safety of the automobile can be influenced to a certain degree.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to provide an automobile shock absorber having good temperature characteristics to solve the problems of the related art.
In order to achieve the purpose, the utility model provides the following technical scheme: an automobile shock absorber with good temperature characteristics comprises an oil storage cylinder and a lifting lug, wherein a sealing element is arranged at the upper end of the oil storage cylinder, a protective cover is arranged on the periphery of the upper part of the oil storage cylinder, a guide part, a working cylinder and a bottom valve part are sequentially installed in the oil storage cylinder from top to bottom, a base is welded at the bottom of the oil storage cylinder, a piston rod and a piston assembly are arranged in the working cylinder, and the piston rod penetrates through the sealing element and the guide part and extends into the working cylinder;
the piston assembly comprises a piston, a limiting sleeve, a valve plate spring and a sealing valve plate are arranged above the piston, a first adjusting valve plate, a first heat-sensitive elastic element, a gasket and a nut are arranged below the piston, and the piston is fixedly arranged at the lower end of the piston rod through the nut;
the bottom valve component comprises a valve seat, the valve seat is arranged on the base, a support is arranged above the valve seat, and a bottom valve spring, a spring seat, a second thermosensitive elastic element and a second adjusting valve plate are sequentially arranged between the support and the valve seat from top to bottom;
the lifting lugs are provided with two lifting lugs which are respectively connected to the upper end and the lower end of the shock absorber, the lifting lugs at the upper ends are fixedly connected with the protective cover and the piston rod, and the lifting lugs at the lower ends are fixedly connected with the base.
Preferably, a seal spring is arranged between the seal and the guide member.
Preferably, the lifting lug is connected with the protective cover, the piston rod and the base in a welding mode.
Preferably, the first thermosensitive elastic element and the second thermosensitive elastic element are both valve plate structures, can generate disc-shaped elastic deformation after being heated, have obvious front and back marks and have determined installation directions.
Has the advantages that: compared with the prior art, the utility model has the beneficial effects that: the piston assembly divides the working cylinder into an upper cavity and a lower cavity, the upper cavity generates pressure when the shock absorber is restored and stretched, restoration damping force is formed by acting on the piston assembly, oil in the upper cavity flows to the lower cavity through the valve plate throttling hole, the pressure is increased when the speed is increased, the valve plate below the piston is opened, the pressure is reduced along with the rate of rise of the speed, and the speed characteristic of the shock absorber is prevented from being too hard. The valve plate is adjusted and the structural parameters are changed, so that the damping force can be adjusted, and the stretching and restoring resistance value of the shock absorber meets the design requirement. The heat-sensitive elastic element is added in the piston assembly on the basis of the original valve plate, the heat-sensitive elastic element generates elastic deformation when the temperature of the shock absorber rises in the working process, the deformation direction of the heat-sensitive elastic element is set to enable the deformation force to press the valve plate so as to increase the recovery damping force, and the increased damping force compensates the thermal attenuation of the damping force caused by high temperature, so that the damping force of the shock absorber has good thermal stability, and the stability of the shock absorber in the working and running process is improved.
Drawings
Fig. 1 is a schematic view of an overall structure of an automobile shock absorber with good temperature characteristics according to the present invention.
Fig. 2 is a partially enlarged view of a point a.
Fig. 3 is a partially enlarged view of B.
FIG. 4 is a schematic diagram of the temperature rise at A.
FIG. 5 is a schematic diagram of the temperature rise at B.
In the drawings: 1-lifting lug, 2-protective cover, 3-sealing element, 4-sealing element spring, 5-oil storage cylinder, 6-guiding element, 7-working cylinder, 8-piston rod, 9-limiting sleeve, 10-valve plate spring, 11-sealing valve plate, 12-piston, 13-first adjusting valve plate, 14-first thermosensitive elastic element, 15-gasket, 16-nut, 17-bracket, 18-bottom valve spring, 19-spring seat, 20-second thermosensitive elastic element, 21-second adjusting valve plate, 22-valve seat, 23-base, I-piston assembly and II-bottom valve component.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Examples
Referring to the attached drawings in the specification, in the embodiment of the utility model, the automobile shock absorber with good temperature characteristics mainly comprises a lifting lug 1, a protective cover 2, an oil storage cylinder 5, a working cylinder 7, a piston rod 8, a sealing element 3, a guide element 6, a piston assembly I and a bottom valve component II.
The lifting lugs 1 are respectively connected to two ends of the shock absorber, the upper ends of the lifting lugs are welded with the piston rod 8 and the protective cover 2, the lower ends of the lifting lugs are welded with the base 23, the circle center of the lifting lugs 1 is located on the center line of the shock absorber, and the end faces of the lifting lugs 1 are symmetrical about the center line of the shock absorber. An elastic rubber sleeve and a steel bushing are further arranged in the lifting lug 1.
The upper ends of the protective cover 2 and the piston rod 8 are welded with the lifting lug 1, and the protective cover 2 is concentric with the piston rod 8. The piston rod 8 penetrates through the guide part 6 of the sealing element 3 and extends into the working cylinder 7, and the lower end of the piston rod is provided with a piston assembly I. The guide piece 6 and the piston rod 8 are in precise sliding fit, and have good sliding performance and good sealing performance.
The upper end of the oil storage cylinder 5 is welded with a protective shell of the sealing element 3, and the sealing element 3, the sealing element spring 4, the guide element 6, the working cylinder 7 and the bottom valve component II are sequentially arranged in the oil storage cylinder 5 from top to bottom. Certain pretightning force is exerted to sealing member spring 4, and the pretightning force compresses tightly sealing member 3 all the time and guarantees sealed reliable, and can play the compensation effect through compressing sealing member 3 when sealing member 3 has wearing and tearing.
The guide 6, the working cylinder 7 and the base valve part II together form a working seal chamber, which are fixed in the oil reservoir 5. The oil storage cylinder 5 is a combined structure and is formed by welding a steel pipe and a base 23, the base 23 is internally sunken and outwards protruded to form a spherical crown shape, and a base valve component II is located inside the base and keeps in a central position. The guide piece 6 and the working cylinder 7 are in gapless fit, the working cylinder 7 and the valve seat 22 are in gapless fit, the piston assembly I and the piston rod 8 move in the working cylinder 7, the volume in the working cylinder 7 is changed, hydraulic pressure is generated, and the hydraulic pressure acts on the piston assembly I and the piston rod 8 to block the movement of the piston assembly I and the piston rod 8, so that damping force is formed.
The piston assembly I comprises a piston 12, a limiting sleeve 9, a valve plate spring 10 and a sealing valve plate 11 are arranged on the piston 12, and a first adjusting valve plate 13, a first heat-sensitive elastic element 14, a gasket 15 and a nut 16 are arranged below the piston 12. The limiting sleeve 9, the valve plate spring 10, the sealing valve plate 11 and the outer side hole group of the piston 12 form a one-way channel, and the inner side hole group of the piston 12, the first adjusting valve plate 13, the first heat-sensitive elastic element 14, the gasket 15 and the nut 16 form a throttling channel.
The bottom valve component II consists of a bracket 17, a bottom valve spring 18, a spring seat 19, a second heat-sensitive elastic element 20, a second adjusting valve plate 21 and a valve seat 22, an inner bulge is arranged at the end part of a clamping jaw of the bracket 17 and buckled in a clamping groove at the upper part of the valve seat 22, and the second adjusting valve plate 21, the second heat-sensitive elastic element 20, the spring seat 19 and the bottom valve spring 18 are sequentially arranged in the bracket 17 along the upper end of the valve seat 22. The bottom of the valve seat 22 is provided with a circulating groove, and the oil in the working cylinder 7 is communicated with the oil storage cylinder 5 through the circulating groove.
When the shock absorber is stretched, the piston rod 8 and the piston assembly I move upwards, oil in the upper space of the working cylinder 7 is compressed to generate hydraulic pressure, and the hydraulic pressure acting on the piston assembly I can hinder the piston 12 to move to form the restoring damping force of the shock absorber. As the shock absorber is extended, oil from the upper chamber flows through the inner set of bores of piston 12 and the underlying valve plate to the lower chamber. The first adjusting valve plate 13 is provided with a small throttling groove, the overflow of the small groove meets the requirement of liquid flow during low-speed movement, at the moment, the damping force is small, the liquid flow is large when the stretching speed is increased, large throttling resistance can be generated when the liquid flow passes through the small groove, the shock absorber can display large damping force, when the resistance reaches a certain value, the first adjusting valve plate 13 and the first thermosensitive elastic element 14 are elastically deformed, a liquid flow channel is opened, the flow area is increased along with the increase of the speed, the rising rate of the throttling resistance of oil liquid can be reduced, and the damping force of the shock absorber can display soft speed characteristics. Preferably, the structural parameters of the first adjusting valve plate 13, the first thermo-elastic element 14 and the spacer 15 are such that the damping force value and the speed characteristic of the shock absorber are optimally matched to the vibration conditions of the vehicle.
When the shock absorber is stretched, the piston rod 8 is pulled out of the working cylinder 7, the pressure inside the working cylinder 7 is reduced, the bottom valve spring 18 of the bottom valve component II is compressed by the oil pressure in the oil storage cylinder 5, the spring seat 19 is opened, and oil enters the working cylinder 7 to compensate the pulled volume of the piston rod 8.
When the shock absorber is compressed, the outer piston rod 8 enters the working cylinder 7 to discharge oil squeezing liquid, and the oil liquid in the working cylinder 7 enters the oil storage cylinder 5 through the bottom valve component II. When the compression speed is low, the flow is low, only the small throttling grooves on the valve plate flow to form low-speed throttling damping force, when the speed is high, the throttling damping force is increased, when the pressure is increased to a certain value, the hydraulic pressure enables the inner sides of the second thermosensitive elastic element 20 and the first adjusting valve plate 21 to generate undercut elastic deformation, the flow area of the valve plate is increased when the valve plate is opened, the flow gap is increased along with the increase of the speed, and the harder compression speed characteristic of the shock absorber is avoided. When the shock absorber is compressed, the oil compression valve plate spring 10 at the lower part of the working cylinder 7 opens the sealing valve plate 11, and oil enters the upper part of the working cylinder 7 through the outer side hole group of the piston 12.
When the shock absorber works, the damping force does work to consume the energy of the vibration of the automobile, the temperature of the oil is increased by the heat generated by the flowing friction of the oil, the viscosity of the oil is reduced, the throttling resistance is reduced at the same speed, the damping force of the shock absorber is reduced, and the optimal shock absorption effect cannot be formed. The first thermosensitive elastic member 14 and the second thermosensitive elastic member 20 are each characterized by being elastically deformed in response to a temperature change.
As shown in fig. 4, after the temperature rises, the first thermo-sensitive elastic element 14 elastically deforms, the first thermo-sensitive elastic element 14 forms an additional pressing force on the first adjustment valve plate 13, a larger hydraulic pressure is required when the oil opens the first adjustment valve plate 13, that is, the tensile damping force increases at the same speed, the increased damping force cancels the damping force attenuated after the temperature rises, so that the tensile restoring damping force of the shock absorber has good temperature characteristics, and preferably, the structure and the size of the first thermo-sensitive elastic element 14 can minimize the temperature attenuation rate of the tensile restoring damping force of the shock absorber.
As shown in fig. 5, the second thermo-elastic element 20 is disposed in the base valve member ii, and when the temperature of the shock absorber rises, the second thermo-elastic element 20 is elastically deformed, so as to add an additional deformation force to the spring seat 19, and a larger force is required when the oil opens the base valve member ii, that is, a larger hydraulic pressure is required at the same compression speed, so that the compression damping force of the shock absorber is increased, and the increased damping force can compensate the damping force after the temperature rises, and preferably, the second thermo-elastic element 20 has a structure and a size that can improve the thermal damping of the compression damping force.
According to the utility model, the working cylinder is divided into an upper cavity and a lower cavity by the piston assembly, the upper cavity generates pressure when the shock absorber is restored and stretched, restoration damping force is formed by acting on the piston assembly, oil in the upper cavity flows to the lower cavity through the valve plate throttling hole, the pressure is increased when the speed is increased, the valve plate below the piston is opened, the pressure is reduced along with the rise rate of the speed, and the speed characteristic of the shock absorber is prevented from being over hard. The valve plate is adjusted and the structural parameters are changed, so that the damping force can be adjusted, and the stretching and restoring resistance value of the shock absorber meets the design requirement. The heat-sensitive elastic element is added in the piston assembly on the basis of the original valve plate, the heat-sensitive elastic element generates elastic deformation when the temperature of the shock absorber rises in the working process, the deformation direction of the heat-sensitive elastic element is set to enable the deformation force to press the valve plate so as to increase the recovery damping force, and the increased damping force compensates the thermal attenuation of the damping force caused by high temperature, so that the damping force of the shock absorber has good thermal stability, and the stability of the shock absorber in the working and running process is improved.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. An automobile shock absorber with good temperature characteristics is characterized in that: the oil storage cylinder is internally provided with a guide part, a working cylinder and a bottom valve part from top to bottom in sequence, the bottom of the oil storage cylinder is welded with a base, the working cylinder is internally provided with a piston rod and a piston assembly, and the piston rod penetrates through the sealing part and the guide part and extends into the working cylinder;
the piston assembly comprises a piston, a limiting sleeve, a valve plate spring and a sealing valve plate are arranged above the piston, a first adjusting valve plate, a first heat-sensitive elastic element, a gasket and a nut are arranged below the piston, and the piston is fixedly arranged at the lower end of the piston rod through the nut;
the bottom valve component comprises a valve seat, the valve seat is arranged on the base, a support is arranged above the valve seat, and a bottom valve spring, a spring seat, a second thermosensitive elastic element and a second adjusting valve plate are sequentially arranged between the support and the valve seat from top to bottom;
the lifting lugs are provided with two lifting lugs which are respectively connected to the upper end and the lower end of the shock absorber, the lifting lugs at the upper ends are fixedly connected with the protective cover and the piston rod, and the lifting lugs at the lower ends are fixedly connected with the base.
2. The shock absorber for the vehicle having the good temperature characteristics as set forth in claim 1, wherein: and a sealing element spring is arranged between the sealing element and the guide element.
3. The shock absorber for the vehicle having the good temperature characteristics as set forth in claim 1, wherein: the lifting lug is connected with the protective cover, the piston rod and the base in a welding mode.
4. The shock absorber for the vehicle having the good temperature characteristics as set forth in claim 1, wherein: the first thermosensitive elastic element and the second thermosensitive elastic element are both valve plate structures, can generate disc-shaped elastic deformation after being heated, have obvious front and back marks and have determined installation directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550384.2U CN215950226U (en) | 2021-10-22 | 2021-10-22 | Automobile shock absorber with good temperature characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550384.2U CN215950226U (en) | 2021-10-22 | 2021-10-22 | Automobile shock absorber with good temperature characteristic |
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| CN215950226U true CN215950226U (en) | 2022-03-04 |
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| CN202122550384.2U Active CN215950226U (en) | 2021-10-22 | 2021-10-22 | Automobile shock absorber with good temperature characteristic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542643A (en) * | 2022-03-24 | 2022-05-27 | 姚海洋 | Variable damping force automobile shock absorber |
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2021
- 2021-10-22 CN CN202122550384.2U patent/CN215950226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542643A (en) * | 2022-03-24 | 2022-05-27 | 姚海洋 | Variable damping force automobile shock absorber |
| CN114542643B (en) * | 2022-03-24 | 2024-05-03 | 姚海洋 | Variable damping force automobile shock absorber |
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