CN213541150U - Shock absorber with variable stiffness spring - Google Patents
Shock absorber with variable stiffness spring Download PDFInfo
- Publication number
- CN213541150U CN213541150U CN202022647822.2U CN202022647822U CN213541150U CN 213541150 U CN213541150 U CN 213541150U CN 202022647822 U CN202022647822 U CN 202022647822U CN 213541150 U CN213541150 U CN 213541150U
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- cavity
- working chamber
- piston rod
- damping
- cylinder body
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Abstract
The utility model discloses a shock absorber with variable stiffness spring, comprising a cylinder body, wherein a working chamber is formed in the cylinder body in a hollow manner, a top cover is arranged on the top cover of the cylinder body, a bottom cover is arranged on the bottom cover of the cylinder body, the working chamber is sealed by the top cover and the bottom cover, a piston rod is inserted in the working chamber, the top of the piston rod passes through the top cover and extends out of the working chamber, the bottom of the piston rod extends in the working chamber, a piston is sleeved on the piston rod and is always positioned in the working chamber, a damping chamber is formed in the piston rod, a pump rod is inserted in the damping chamber, the bottom of the pump rod extends out of the damping chamber, the top of the pump rod is connected with the inner wall of the damping chamber through a damping spring, and a spring pressure adjusting device is sleeved on the piston rod, the spring pressure regulating device comprises an air storage tank.
Description
Technical Field
The utility model relates to a bumper shock absorber technical field especially relates to a bumper shock absorber with variable stiffness spring.
Background
In the prior art, a system and a method for changing the spring stiffness of a shock absorber in real time are disclosed in the chinese patent No. CN 201410025170.5. The shock absorber includes a housing having an inner surface forming a cavity. A resilient material disposed within the cavity and securely attached to the inner surface of the housing. A first chamber is formed by the first end of the piece of resilient material and the inner surface of the housing. The method includes restricting movement of the resilient material by adjusting a pressure inside the first chamber, thereby changing a spring rate of the shock absorber.
However, in the above patent, the spring rate is adjusted by adjusting the internal pressure of the first chamber, which is provided in a narrow space between the first end of the elastic material member and the inner surface of the housing, and when the internal pressure of the first chamber increases, it is easy to directly press the inner wall of the housing, causing a risk of deformation of the housing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to above-mentioned technical current situation and provide a bumper shock absorber with variable rigidity spring.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a shock absorber with a variable-stiffness spring comprises a cylinder body, a working cavity is formed in the cylinder body in a hollow mode, a top cover is arranged on the top cover of the cylinder body, a bottom cover is arranged on the bottom cover of the cylinder body, the working cavity is sealed by the top cover and the bottom cover, a piston rod is connected in the working cavity in a plugged mode, the top of the piston rod penetrates through the top cover and extends out of the working cavity, the bottom of the piston rod extends in the working cavity, a piston is sleeved on the piston rod and is always located in the working cavity, a damping cavity is formed in the piston rod, a pump rod is connected in the damping cavity in a plugged mode, the bottom of the pump rod extends out of the damping cavity, the top of the pump rod is connected with the inner wall of the damping cavity through a damping spring, a spring pressure adjusting device is further sleeved on the piston rod and comprises an air storage tank, an air passage is arranged below the air storage tank, the air storage tank is communicated with the air passage, a pressure adjusting cavity is arranged below the air passage, and the pressure adjusting cavity is communicated with the damping cavity through an air valve.
As the improvement of the utility model, the cylinder body bottom is provided with rings for connect on vehicle chassis the lifting eye has been seted up on the rings.
As the utility model discloses a preferred top cap week is along being formed with the seal groove, the inner wall of working chamber can with the notch of seal groove is sealed inlay in the seal groove and be equipped with the sealing washer, the initial dimension of sealing washer will be greater than the size of seal groove, the sealing washer is extruded in the seal groove.
As the specific technical scheme of the utility model, the chamber wall in pressure regulation chamber is made by elastic material, and when pressure regulation intracavity portion atmospheric pressure rose, the chamber wall that can promote the pressure regulation chamber outwards expanded and opened the accent.
Compared with the prior art, the utility model has the advantages of: utilize damping chamber and spring pressure adjusting device to make the utility model discloses a bumper shock absorber can be according to actual road conditions real time adjustment damping spring's coefficient of elasticity for its rigidity is variable, and at the highway section spring rate reinforcing of jolting, effectively carry out the shock attenuation, weakens at comparatively flat highway section spring rate, can prolong the life of whole bumper shock absorber.
Drawings
FIG. 1 is a schematic structural view of a shock absorber with a variable rate spring according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the damper spring of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in the attached drawings, the embodiment is a shock absorber with a variable stiffness spring, which comprises a cylinder body 1, wherein a hanging ring 12 is arranged at the bottom of the cylinder body and used for being connected to a chassis of a vehicle, and a hanging hole is formed in the hanging ring.
The inside cavity of cylinder body is formed with the working chamber, is equipped with top cap 2 at the top lid of cylinder body, is equipped with bottom 3 at the bottom lid of cylinder body, by the top cap with the bottom will the working chamber is sealed it has piston rod 4 to peg graft in the working chamber, and the top of piston rod is passed the top cap and is extended in the outside of working chamber, and the bottom of piston rod extends in the working chamber, overlaps on the piston rod to be equipped with piston 5, the piston is located all the time in the working chamber, and the external diameter of piston is about to be greater than the internal diameter of working chamber slightly, and rubber is wrapped up outside the piston for the piston has certain elasticity, even makes the piston can also hug closely the inner wall of working chamber when can slide along the inner wall of.
A damping cavity 14 is formed in the piston rod, a pump rod 6 is inserted in the damping cavity, the bottom of the pump rod extends out of the damping cavity, the top of the pump rod is connected with the inner wall of the damping cavity through a damping spring 7, a spring pressure adjusting device is further sleeved on the piston rod and comprises a gas storage tank 8, a gas channel 9 is arranged below the gas storage tank and communicated with the gas channel, a pressure adjusting cavity 10 is arranged below the gas channel and communicated with the damping cavity through a gas valve 11, the gas storage tank can input gas into the damping cavity under the driving of an external pressurizing mechanism, so that the gas pressure inside the damping cavity is increased, when the gas pressure inside the damping cavity is increased, the damping spring is compressed, the rigidity is improved, otherwise, when the gas storage tank extracts the gas in the damping cavity outwards, the internal pressure in the damping cavity is reduced, and the damping spring is reset, the elastic rigidity decreases. The cavity wall of the pressure regulating cavity is made of elastic material, and when the air pressure in the pressure regulating cavity rises, the cavity wall of the pressure regulating cavity can be pushed to expand outwards to open the cavity opening.
The top cap is along being formed with the seal groove, the inner wall of working chamber can with the notch of seal groove seals inlay in the seal groove and be equipped with sealing washer 13, the initial size of sealing washer will be greater than the size of seal groove, the sealing washer is extruded in the seal groove.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A shock absorber with variable rate spring, including the cylinder body the inside cavity of cylinder body is formed with the working chamber the top lid of cylinder body is equipped with the top cap the bottom lid of cylinder body is equipped with the bottom, by the top cap with the bottom will the working chamber is sealed it has the piston rod to peg graft in the working chamber, the top of piston rod passes the top cap and extends in the outside of working chamber, the bottom of piston rod extends in the working chamber, the cover is equipped with the piston on the piston rod, the piston is located all the time in the working chamber, its characterized in that: the damping device is characterized in that a damping cavity is formed in the piston rod, a pump rod is inserted in the damping cavity, the bottom of the pump rod extends out of the damping cavity, the top of the pump rod is connected with the inner wall of the damping cavity through a damping spring, a spring pressure adjusting device is further sleeved on the piston rod and comprises a gas storage tank, a gas channel is arranged below the gas storage tank, the gas storage tank is communicated with the gas channel, a pressure adjusting cavity is arranged below the gas channel, and the pressure adjusting cavity is communicated with the damping cavity through a gas valve.
2. The shock absorber with variable rate spring of claim 1, wherein: the bottom of the cylinder body is provided with a hanging ring for being connected to a vehicle chassis, and the hanging ring is provided with a hanging hole.
3. The shock absorber with variable rate spring of claim 1, wherein: the top cap is formed with the seal groove along the periphery, the inner wall of working chamber can with the notch of seal groove seals inlay in the seal groove and be equipped with the sealing washer, the initial size of sealing washer will be greater than the size of seal groove, the sealing washer is extruded in the seal groove.
4. The shock absorber with variable rate spring of claim 1, wherein: the cavity wall of the pressure regulating cavity is made of elastic materials, and when the air pressure in the pressure regulating cavity rises, the cavity wall of the pressure regulating cavity can be pushed to expand outwards to open the cavity opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647822.2U CN213541150U (en) | 2020-11-17 | 2020-11-17 | Shock absorber with variable stiffness spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647822.2U CN213541150U (en) | 2020-11-17 | 2020-11-17 | Shock absorber with variable stiffness spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541150U true CN213541150U (en) | 2021-06-25 |
Family
ID=76482723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022647822.2U Active CN213541150U (en) | 2020-11-17 | 2020-11-17 | Shock absorber with variable stiffness spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541150U (en) |
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2020
- 2020-11-17 CN CN202022647822.2U patent/CN213541150U/en active Active
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