CN111306239A - Variable stroke damping curve shock absorber - Google Patents

Variable stroke damping curve shock absorber Download PDF

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Publication number
CN111306239A
CN111306239A CN202010262255.0A CN202010262255A CN111306239A CN 111306239 A CN111306239 A CN 111306239A CN 202010262255 A CN202010262255 A CN 202010262255A CN 111306239 A CN111306239 A CN 111306239A
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CN
China
Prior art keywords
cylinder
piston
shock absorber
damping curve
variable stroke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010262255.0A
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Chinese (zh)
Inventor
马世强
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Individual
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Individual
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Filing date
Publication date
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Priority to CN202010262255.0A priority Critical patent/CN111306239A/en
Publication of CN111306239A publication Critical patent/CN111306239A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/516—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/3405—Throttling passages in or on piston body, e.g. slots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3481—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by shape or construction of throttling passages in piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3485—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/362—Combination of sealing and guide arrangements for piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a variable stroke damping curve shock absorber which comprises a cylinder bottom and an oil seal, wherein a working cylinder is fixedly mounted at the upper end of the cylinder bottom, a cylinder cover is fixedly mounted at the upper end of the working cylinder, a piston connecting rod penetrates through the oil seal and the cylinder cover, an oil storage cylinder base is movably mounted at one side of the cylinder bottom, an oil storage cylinder is fixedly mounted at the upper end of the oil storage cylinder base, a special-shaped rod is fixedly mounted above the cylinder bottom, a piston is sleeved at the bottom end of the piston connecting rod, a small stop block is fixedly mounted on the upper surface of the piston, a spring is fixedly mounted at one side of the small stop block, and a fan-shaped valve is fixedly mounted at one end of the. The invention has simple mechanical structure, no electronic components, convenient processing and low cost, and can customize any compression stroke-damping curve and any stretching stroke-damping curve on a shock absorber only by adjusting the shapes of the throttling hole and the special-shaped rod.

Description

Variable stroke damping curve shock absorber
Technical Field
The invention relates to a shock absorber, in particular to a shock absorber with a variable stroke damping curve.
Background
The shock absorber is used for inhibiting the shock generated by rebound of the spring after shock absorption and the impact from the road surface, is widely used for automobiles, and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the running smoothness of the automobile.
The common hydraulic shock absorber and the automatic damping adjusting shock absorber cannot be provided with stroke-damping curves under different compression and stretching working conditions. The contradiction between the comfort and the mobility of the automobile cannot be solved. Electromagnetic dampers are complex in construction and costly.
Disclosure of Invention
The invention aims to provide a shock absorber with a variable stroke damping curve, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a variable stroke damping curve bumper shock absorber, includes cylinder bottom and oil blanket, the upper end fixed mounting of cylinder bottom has the working cylinder, the upper end fixed mounting of working cylinder has the cylinder cap, the inside of oil blanket and cylinder cap is run through and is provided with piston rod, one side movable mounting of cylinder bottom has the oil storage cylinder base, the upper end fixed mounting of oil storage cylinder base has the oil storage cylinder, the top fixed mounting of cylinder bottom has special-shaped pole, the bottom cover of piston rod is equipped with the piston, the last fixed surface of piston installs little dog, one side fixed mounting of little dog has the spring, the one end fixed mounting of spring has fan-shaped valve, the orifice has been seted up to the inside of piston, the upper end fixed mounting of cylinder cap has the oil blanket.
As a further scheme of the invention: the piston connecting rod is connected with the oil seal in a sliding mode, and the piston is fixedly connected with the piston connecting rod.
As a still further scheme of the invention: the special-shaped rod penetrates through the inner part of the throttling hole, and the fan-shaped valve is in sliding connection with the piston connecting rod or the inner wall of the working cylinder, so that the fan-shaped valve can rotate around the piston connecting rod and slide along the piston connecting rod.
As a still further scheme of the invention: the material of fan-shaped valve is metal, and fan-shaped valve covers the top at the orifice.
As a still further scheme of the invention: the fan-shaped valve can be arranged below the piston, the number of the fan-shaped valve and the number of the throttling holes can be multiple, and the one-way valve plate can be arranged below the throttling hole to play a role in closing part of the throttling hole.
As a still further scheme of the invention: the spring may be a compression spring, an extension spring, a torsion spring, and a volute spiral spring.
As a still further scheme of the invention: can set up the guide bar in the working cylinder to pass the guiding hole on the piston, be used for preventing the rotation of piston, or make the dysmorphism pole can center on the piston connecting rod rotates, the upper and lower both ends of dysmorphism pole all are provided with the slip connecting ring, make sliding connection between dysmorphism pole through slip connecting ring and piston connecting rod or the working cylinder inner wall.
As a still further scheme of the invention: a temperature compensation valve can be arranged at the throttling hole to compensate damping attenuation caused by the reduction of the viscosity of the damping oil after the temperature rises.
As a still further scheme of the invention: the oil storage cylinder can be replaced by an outer composite cylinder.
As a still further scheme of the invention: the special-shaped rod can be set to be a quick-release replaceable structure.
As a still further scheme of the invention: an elastic pressure limiting valve can be arranged on the piston to prevent damage caused by overlarge damping force.
As a still further scheme of the invention: a compression valve and a compensation valve can be arranged in a communicating pore passage between the oil storage cylinder and the working cylinder.
Compared with the prior art, the invention has the beneficial effects that:
this variable stroke damping curve bumper shock absorber to simple and easy mechanical structure, no electronic components, processing is convenient low cost, only needs the shape of adjusting orifice and dysmorphism pole, just can customize arbitrary compression stroke-damping curve and arbitrary tensile stroke-damping curve on a bumper shock absorber, for example the following ideal stroke damping curve:
compression stroke: the damping is small in the early stage of the stroke, so that the elastic action of the suspension spring is fully exerted to relax the impact. The damping at the end of the stroke is large, so that the shock absorber is prevented from colliding with the bottom during large-flying and large-jumping, and components such as a suspension and the like are protected.
Stretching stroke: the damping is less in the earlier stage of the stroke, so that the wheels can rebound quickly under the elastic action of the compressed suspension spring, the wheel dead time is reduced, the grip force and the controllability are improved, the damping in the last stage of the stroke is large, the rebound speed of the wheels is reduced, the vibration of the vehicle body can be attenuated quickly, and the instant vehicle body side inclination during steering can be reduced.
The changed damping coefficient is not easy to generate a resonance area of the natural frequency, and the riding comfort is improved.
Drawings
FIG. 1 is a schematic structural diagram of a shock absorber with variable stroke damping curves.
FIG. 2 is a schematic view of the internal structure of the shock absorber with variable stroke damping curve.
FIG. 3 is a partial structural view of a shock absorber with a variable stroke damping curve.
FIG. 4 is a schematic diagram of a piston structure of a variable stroke damping curve shock absorber.
FIG. 5 is a schematic view showing an effective orifice area structure when a piston of the variable stroke damping curve shock absorber moves downward.
FIG. 6 is a schematic view showing an effective orifice area structure when a piston of the variable stroke damping curve shock absorber moves upward.
Shown in the figure: 1. a cylinder bottom; 2. a working cylinder; 3. a cylinder cover; 4. a piston connecting rod; 5. a base of the oil storage cylinder; 6. an oil storage cylinder; 7. a profiled bar; 8. a piston; 9. a small stop block; 10. a spring; 11. a sector valve; 12. an orifice.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in an embodiment of the present invention, a stroke-variable damping curve shock absorber includes a cylinder bottom 1 and an oil seal 13, a working cylinder 2 is fixedly mounted at an upper end of the cylinder bottom 1, a guide rod is disposed in the working cylinder 2 and passes through a guide hole on a piston 8, a cylinder cover 3 is fixedly mounted at an upper end of the working cylinder 2, a piston connecting rod 4 is disposed through the oil seal 13 and the cylinder cover 3, a cylinder storage base 5 is movably mounted at one side of the cylinder bottom 1, a cylinder storage 6 is fixedly mounted at an upper end of the cylinder storage base 5, the cylinder storage 6 can be replaced by an outer cylinder, a special-shaped rod 7 is fixedly mounted above the cylinder bottom 1, sliding connecting rings are disposed at upper and lower ends of the special-shaped rod 7, the special-shaped rod 7 is slidably connected with the piston connecting rod 4 or an inner wall of the working cylinder 2 through the sliding connecting rings, so that the special-shaped rod 7 can rotate around, the special-shaped rod 7 penetrates through the inside of the throttling hole 12, the fan-shaped valve 11 is in sliding connection with the piston connecting rod 4, the piston 8 is sleeved at the bottom end of the piston connecting rod 4, the small stop block 9 is fixedly installed on the upper surface of the piston 8, the spring 10 is fixedly installed on one side of the small stop block 9, the spring 10 can be a compression spring, an extension spring, a torsion spring and a volute spring, the fan-shaped valve 11 is fixedly installed at one end of the spring 10, the fan-shaped valve 11 is made of metal, the fan-shaped valve 11 covers the throttling hole 12, the fan-shaped valve 11 can be arranged below the piston 8, the number of the fan-shaped valve 11 and the number of the throttling hole 12 can be multiple, a one-way valve plate can be arranged below the throttling hole 12 to achieve the function of closing part of the throttling hole, the throttling hole 12 is formed in the piston 8, the throttling hole 12 can be provided, the piston 8 and the piston connecting rod 4 are fixedly connected, when the piston 8 moves downwards, damping oil flows upwards through a gap between the throttling hole 12 and the special-shaped rod 7 to push the fan-shaped valve 11 to move upwards, the area of the effective throttling hole 12 is as shown in figure 5, the section of the special-shaped rod 7 is increased along with the downward movement of the piston 8, the area of the gap between the throttling hole 12 and the special-shaped rod 7 is reduced, the damping coefficient of the shock absorber is increased along with the increase of the damping oil, when the piston 8 moves upwards, the damping oil flows downwards through the gap between the throttling hole 12 and the special-shaped rod 7 to suck the fan-shaped valve 11 to move downwards, the throttling hole 12 is partially closed under the action of the spring 10 and the limit of the special-shaped rod 7, the area of the effective throttling hole 12 is as shown in figure 6, the section of the special-shaped rod 7 is reduced along with the upward movement of the piston 8, the closed, no electronic component, convenient processing and low cost, and can customize any compression stroke-damping curve and any stretching stroke-damping curve on a shock absorber only by adjusting the shapes of the throttling hole 12 and the special-shaped rod 7, such as the following ideal stroke damping curve:
compression stroke: the damping is small in the early stage of the stroke, so that the elastic action of the suspension spring is fully exerted to relax the impact. The damping at the end of the stroke is large, so that the shock absorber is prevented from colliding with the bottom during large-flying and large-jumping, and components such as a suspension and the like are protected.
Stretching stroke: the damping is less in the earlier stage of the stroke, so that the wheels can rebound quickly under the elastic action of the compressed suspension spring, the wheel dead time is reduced, the grip force and the controllability are improved, the damping in the last stage of the stroke is large, the rebound speed of the wheels is reduced, the vibration of the vehicle body can be attenuated quickly, and the instant vehicle body side inclination during steering can be reduced.
The working principle of the invention is as follows: when the piston 8 moves downwards, damping oil flows upwards through a gap between the throttling hole 12 and the special-shaped rod 7 to push the fan-shaped valve 11 to move upwards, the area of the effective throttling hole 12 is as shown in figure 5, the section of the special-shaped rod 7 is increased along with the downward movement of the piston 8, the area of the gap between the throttling hole 12 and the special-shaped rod 7 is reduced, the damping coefficient of the shock absorber is increased along with the reduction of the area, when the piston 8 moves upwards, the damping oil flows downwards through the gap between the throttling hole 12 and the special-shaped rod 7 to suck the fan-shaped valve 11 to move downwards, the throttling hole 12 is partially closed under the action of the spring 10 and the limit of the special-shaped rod 7, the area of the effective throttling hole 12 is as shown in figure 6, the section of the special-shaped rod 7 is reduced along with the upward movement of the piston 8.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a variable stroke damping curve bumper shock absorber, includes cylinder bottom (1) and oil blanket (13), its characterized in that: the upper end of the cylinder bottom (1) is fixedly provided with a working cylinder (2), the upper end of the working cylinder (2) is fixedly provided with a cylinder cover (3), a piston connecting rod (4) penetrates through the oil seal (13) and the cylinder cover (3), an oil storage cylinder base (5) is movably arranged on one side of the cylinder bottom (1), an oil storage cylinder (6) is fixedly arranged at the upper end of the oil storage cylinder base (5), a special-shaped rod (7) is fixedly arranged above the cylinder bottom (1), a piston (8) is sleeved at the bottom end of the piston connecting rod (4), a small stop block (9) is fixedly arranged on the upper surface of the piston (8), a spring (10) is fixedly arranged on one side of the small stop block (9), one end fixed mounting of spring (10) has sector valve (11), orifice (12) have been seted up to the inside of piston (8), the upper end fixed mounting of cylinder cap (2) has oil blanket (13).
2. The variable stroke damping curve shock absorber according to claim 1, wherein: the piston connecting rod (4) is in sliding connection with the oil seal (13), and the piston (8) is fixedly connected with the piston connecting rod (4).
3. The variable stroke damping curve shock absorber according to claim 1, wherein: the special-shaped rod (7) penetrates through the inside of the throttle hole (12), and the sector valve (11) is connected with the piston connecting rod (4) in a sliding mode.
4. The variable stroke damping curve shock absorber according to claim 1, wherein: the fan-shaped valve (11) is made of metal, and the fan-shaped valve (11) covers the upper part of the throttle hole (12).
5. The variable stroke damping curve shock absorber according to claim 1, wherein: the fan-shaped valve (11) can be arranged below the piston (8), the number of the fan-shaped valve (11) and the number of the throttling holes (12) can be multiple, and a check valve plate can be arranged below the throttling holes (12).
6. The variable stroke damping curve shock absorber according to claim 1, wherein: the spring (10) may be a compression spring, an extension spring, a torsion spring, and a volute spiral spring.
7. The variable stroke damping curve shock absorber according to claim 1, wherein: can set up the guide bar in the working cylinder (2) to pass the guiding hole on piston (8), the upper and lower both ends of dysmorphism pole (7) all are provided with the slip connecting ring, and sliding connection between dysmorphism pole (7) through slip connecting ring and piston connecting rod (4) or working cylinder (2) inner wall.
8. The variable stroke damping curve shock absorber according to claim 1, wherein: a temperature compensation valve can be arranged at the throttle hole (12).
9. The variable stroke damping curve shock absorber according to claim 1, wherein: the oil storage cylinder (6) can be replaced by an outer composite cylinder.
10. The variable stroke damping curve shock absorber according to claim 1, wherein: the special-shaped rod (7) can be arranged into a quick-release replaceable structure.
CN202010262255.0A 2020-04-06 2020-04-06 Variable stroke damping curve shock absorber Withdrawn CN111306239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010262255.0A CN111306239A (en) 2020-04-06 2020-04-06 Variable stroke damping curve shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010262255.0A CN111306239A (en) 2020-04-06 2020-04-06 Variable stroke damping curve shock absorber

Publications (1)

Publication Number Publication Date
CN111306239A true CN111306239A (en) 2020-06-19

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ID=71157567

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010262255.0A Withdrawn CN111306239A (en) 2020-04-06 2020-04-06 Variable stroke damping curve shock absorber

Country Status (1)

Country Link
CN (1) CN111306239A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112576675A (en) * 2020-12-30 2021-03-30 赣州禾盈通用零部件有限公司 Rotary damper
CN112984027A (en) * 2021-04-16 2021-06-18 吉林大学 Damping-controllable bidirectional-acting cylinder type shock absorber piston

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112576675A (en) * 2020-12-30 2021-03-30 赣州禾盈通用零部件有限公司 Rotary damper
CN112984027A (en) * 2021-04-16 2021-06-18 吉林大学 Damping-controllable bidirectional-acting cylinder type shock absorber piston

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Application publication date: 20200619