CN220037334U - Sealing structure for oil storage cylinder of inflatable shock absorber - Google Patents
Sealing structure for oil storage cylinder of inflatable shock absorber Download PDFInfo
- Publication number
- CN220037334U CN220037334U CN202320966674.1U CN202320966674U CN220037334U CN 220037334 U CN220037334 U CN 220037334U CN 202320966674 U CN202320966674 U CN 202320966674U CN 220037334 U CN220037334 U CN 220037334U
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- Prior art keywords
- oil storage
- floating piston
- storage pipe
- shock absorber
- expansion chamber
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- 230000035939 shock Effects 0.000 title claims abstract description 33
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 239000003921 oil Substances 0.000 claims abstract description 60
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 7
- 230000009191 jumping Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides an oil storage cylinder sealing structure for an inflatable shock absorber, which comprises an oil storage pipe, wherein one axial end of the oil storage pipe is opened, and the other axial end of the oil storage pipe is connected with a hanging ring; the floating piston is sleeved in the oil storage pipe, the oil storage pipe is divided into an expansion chamber and a hydraulic oil working chamber along the axial direction by taking the floating piston as a partition, and the expansion chamber is arranged in a section of one side of the floating piston, which is close to the hanging ring; the limiting unit is embedded on the inner wall of the oil storage pipe and is positioned at one end of the floating piston far away from the expansion chamber, and the inner diameter of the limiting unit is larger than the outer diameter of the floating piston. The utility model adopts the limiting unit to prevent the floating piston from running upwards beyond the setting of the initial position, thereby avoiding adverse effects on the performance and stability of the shock absorber, reducing the jump and shake of the vehicle and improving the driving stability of the vehicle.
Description
Technical Field
The utility model relates to the field of shock absorbers, in particular to the technical field of single-tube shock absorbers, and particularly relates to a sealing structure for an oil storage cylinder of an inflatable shock absorber.
Background
In order to save the cost, the single tube shock absorber is filled with gas in the hydraulic oil chamber, and in addition, the shock absorption performance of the shock absorber can be increased due to the addition of the gas, so that the gas-filled shock absorber is widely applied to shock absorption of vehicles.
In use, as the piston rod reciprocates, gas is repeatedly contracted and bounced to offset the force of the piston rod caused by the reciprocating motion so as to achieve the damping effect, and the floating piston is one of key components for adjusting the pressure and flow of the damper, when the floating piston is driven by the piston rod and the gas and even inertia, the oil mass in the oil storage tank is unbalanced due to the fact that the floating piston tends to run upwards beyond the initial position, so that the abrasion and destruction rate of certain components of the damper are increased, the service life and durability of the damper are influenced, in addition, the performance and the stability of the damper are adversely affected, and the damping effect is greatly reduced; meanwhile, the driving stability of the vehicle is reduced, so that the vehicle is controlled to be adversely affected, and the jumping and shaking of the vehicle are aggravated.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a sealing structure for an oil storage cylinder of an inflatable shock absorber, which is used for solving the difficulties of the prior art.
To achieve the above and other related objects, the present utility model provides a sealing structure for an oil storage cylinder of an air-filled shock absorber, comprising:
the oil storage pipe 1 is provided with an opening at one axial end of the oil storage pipe 1, and the other axial end of the oil storage pipe 1 is connected with a hanging ring 5;
the floating piston 2 is arranged in the oil storage pipe 1 in a sealing manner, the oil storage pipe 1 is divided into an expansion chamber 3 and a hydraulic oil working chamber 4 by taking the floating piston 2 as a partition along the axial direction, and the expansion chamber 3 is arranged in a section of the floating piston 2, which is close to the hanging ring 5;
the limiting unit is embedded on the inner wall of the oil storage pipe 1 and is positioned at one end of the floating piston 2 far away from the expansion chamber 3, and the inner diameter of the limiting unit is larger than the outer diameter of the floating piston 2.
According to a preferred embodiment, the inner diameter of the oil reservoir tube 1 is identical in the region of the expansion chamber 3 and the hydraulic oil working chamber 4.
According to a preferred solution, the limiting unit comprises:
the clamping groove 6 is formed on the inner wall of the oil storage pipe 1 to form a concave structure;
the clamping spring 7 is embedded in the clamping groove 6, and the inner diameter of the clamping spring 7 is smaller than the inner diameter of the oil storage pipe 1 and the inner diameter of the floating piston 2.
According to a preferred embodiment, the position of the clamping groove 6 is set at the initial position of the floating piston 2 in the shock absorber.
According to a preferred scheme, the clamping groove 6 integrally forms a round platform cavity 61 and an annular cavity 62 along the direction of the expansion chamber 3 towards the hydraulic oil working chamber 4, and the inner diameter of the annular cavity 62 and the junction of the round platform cavity 61 and the annular cavity 62 are larger than the inner diameter of the oil storage pipe 1.
According to a preferred embodiment, the internal diameter of the end of the truncated cone cavity 61 near the expansion chamber 3 is the same as the internal diameter of the oil storage tube 1.
According to a preferred embodiment, the angle between the side of the truncated cone cavity 61 and the inner wall of the oil storage tube 1 is 20-25 degrees.
According to a preferred embodiment, the included angle between the side surface of the circular truncated cone cavity 61 and the inner wall of the oil storage pipe 1 is 23 degrees, the height of the circular truncated cone cavity 61 is 2mm, and the height of the annular cavity 62 is 1.6mm.
According to a preferred embodiment, the outer circumferential ring of the floating piston 2 is provided with a sealing ring 8 and a recessed annular groove 9 is provided in correspondence of the sealing ring 8.
According to a preferred scheme, the annular grooves 9 are arranged in parallel along the direction of the expansion chamber 3 towards the hydraulic oil working chamber 4, the two annular grooves are arranged at intervals, and a sealing ring 8 is sleeved in each annular groove 9.
According to a preferred embodiment, the spacing between a pair of annular grooves 9 is smaller than the spacing between the opposite outer sides of each annular groove 9 corresponding to the floating piston 2.
According to a preferred embodiment, a pair of annular grooves 9 are provided symmetrically with respect to the central plane of the floating piston 2.
According to a preferred embodiment, the expansion chamber 3 is filled with nitrogen.
The utility model adopts the limiting unit to prevent the floating piston from running upwards beyond the setting of the initial position, thereby avoiding adverse effects on the performance and stability of the shock absorber, reducing the jump and shake of the vehicle and improving the driving stability of the vehicle.
Preferred embodiments for carrying out the present utility model will be described in more detail below with reference to the attached drawings so that the features and advantages of the present utility model can be easily understood.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view showing the structure of the oil storage pipe according to the present utility model;
FIG. 3 is a schematic view of the enlarged partial structure of FIG. 2;
FIG. 4 is an enlarged schematic view of the structure of the floating piston according to the present utility model;
FIG. 5 is an enlarged view showing the structure of the snap spring according to the present utility model;
description of the reference numerals
1. An oil storage pipe; 2. a floating piston; 3. an expansion chamber; 4. a hydraulic oil working chamber; 5. a hanging ring; 6. the clamping groove, 61, the round table cavity, 62 and the annular cavity; 7. clamping springs; 8. a seal ring; 9. an annular groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the technical solutions of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present utility model. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.
Possible embodiments within the scope of the utility model may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The utility model provides an oil storage cylinder sealing structure for an inflatable shock absorber, which is used in a floating piston sealing limit process of the shock absorber, does not limit the type of the shock absorber, and is particularly suitable for a single-tube shock absorber.
In general, the sealing structure for the oil storage cylinder of the pneumatic shock absorber mainly comprises an oil storage pipe 1, a floating piston 2 and a limiting unit. Among them, reference can be made to fig. 1, which shows the arrangement of the oil storage pipe 1, the floating piston 2, and the limiting unit.
In order to realize the purpose that the floating piston cannot rise along with the gas to exceed the initial position, the problems that in the prior art, when the floating piston is driven by a piston rod and the gas and even inertia, the floating piston always runs upwards beyond the initial position, the oil quantity in the oil storage tank is unbalanced, so that the abrasion and destruction rate of certain parts of the shock absorber are increased, the service life and the durability of the shock absorber are influenced, in addition, the performance and the stability of the shock absorber are adversely affected, and the shock absorbing effect is greatly reduced are solved; meanwhile, the driving stability of the vehicle is reduced, so that the vehicle is controlled to be adversely affected, and the problems of jumping and shaking of the vehicle are aggravated.
Therefore, in the technical scheme provided by the embodiment, the floating piston 2 is sealed and sleeved in the oil storage pipe 1, the oil storage pipe 1 is divided into an expansion chamber 3 and a hydraulic oil working chamber 4 by taking the floating piston 2 as a partition along the axial direction, nitrogen is filled in the expansion chamber 3, one end, close to the expansion chamber 3, of the floating piston 2 is connected with a lifting ring 5, and one end, close to the axial direction of the hydraulic oil working chamber 4, of the floating piston 2 is provided with an opening for inserting a piston rod.
In order to realize the transition lifting of the floating piston 2 towards the opening of the oil storage pipe 1, a limiting unit is embedded on the inner wall of the oil storage pipe 1, and one end of the floating piston 2 away from the expansion chamber 3 is provided with the limiting unit, wherein the inner diameter of the limiting unit is larger than the outer diameter of the floating piston 2, so that the floating piston 2 can be propped against the limiting unit when moving towards the opening, the floating piston 2 can be prevented from running upwards beyond the setting of the initial position, the adverse effect on the performance and stability of the shock absorber is avoided, the jumping and shaking of the vehicle are reduced, and the driving stability of the vehicle is improved.
The specific explanation is that the inner diameters of the two ends of the limiting unit, namely the inner diameter of the oil storage pipe 1 is consistent with the inner diameter of the expansion chamber 3 and the hydraulic oil working chamber 4, so that the development of the limiting unit does not influence the structure of the original shock absorber, the development cost is low, the structural change is small, and the shock absorber is suitable for practical production.
Specifically, the limiting unit comprises a clamping groove 6 and a clamping spring 7, wherein the clamping groove 6 is formed on the inner wall of the oil storage pipe 1 to form a concave structure, the clamping spring 7 for propping against the floating piston 2 is embedded in the clamping groove 6 to be arranged, and the inner diameter of the clamping spring 7 is required to be smaller than the inner diameter of the oil storage pipe 1 and the inner diameter of the floating piston 2 in terms of structure, so that the aim of propping against the floating piston 2 is fulfilled.
In order to avoid hard connection between the clamping spring 7 and the clamping groove 6, the difficulty in installation is reduced, meanwhile, direct collision is avoided between the floating piston 2 and the clamping spring 7 in the collision process, therefore, the clamping groove 6 integrally forms a round table cavity 61 and an annular cavity 62 along the direction of the expansion chamber 3 towards the hydraulic oil working chamber 4, the joint of the round table cavity 61 and the annular cavity 62 and the inner diameter of the annular cavity 62 are larger than the inner diameter of the oil storage pipe 1, the inner diameter of one end of the round table cavity 61 close to the expansion chamber 3 is the same as the inner diameter of the oil storage pipe 1, the included angle between the side surface of the round table cavity 61 and the inner wall of the oil storage pipe 1 is preferably set to be 23 degrees, the height of the matched round table cavity 61 is 2mm, the height of the annular cavity 62 is 1.6mm, the up-down movement of the floating piston 2 is not influenced, and a buffer space is provided for the clamping spring 7.
As described above, the floating piston 2 is sealed and sleeved in the oil storage pipe 1, therefore, the concave annular groove 9 is arranged on the outer periphery of the floating piston 2, and the sealing ring 8 is sleeved in the annular groove 9; in order to ensure tightness, a pair of annular grooves 9 are arranged in parallel along the direction of the expansion chamber 3 towards the hydraulic oil working chamber 4, the two are arranged at intervals, and a sealing ring 8 is sleeved in each annular groove 9; on the other hand, the interval between a pair of annular grooves 9 is smaller than the interval between the opposite outer side surfaces of the floating piston 2 corresponding to each annular groove 9, so that the direct contact of a pair of sealing rings 8 is avoided, the deformation of the sealing rings 8 is caused in the moving process, and the occurrence of leakage is avoided.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (5)
1. An oil storage cylinder sealing structure for an inflatable shock absorber, comprising:
the oil storage pipe (1), one axial end of the oil storage pipe (1) is opened, and the other axial end of the oil storage pipe is connected with a hanging ring (5);
the floating piston (2) is arranged in the oil storage pipe (1) in a sealing manner, the oil storage pipe (1) is divided into an expansion chamber (3) and a hydraulic oil working chamber (4) by taking the floating piston (2) as a partition along the axial direction, and the expansion chamber (3) is arranged in a section of one side of the floating piston (2) close to the lifting ring (5);
the limiting unit is embedded on the inner wall of the oil storage pipe (1) and is positioned at one end of the floating piston (2) far away from the expansion chamber (3), and the inner diameter of the limiting unit is larger than the outer diameter of the floating piston (2);
the limit unit includes:
the clamping groove (6) is formed in the inner wall of the oil storage pipe (1) to form a concave structure;
the clamping spring (7) is embedded in the clamping groove (6), and the inner diameter of the clamping spring (7) is smaller than the inner diameter of the oil storage pipe (1) and the inner diameter of the floating piston (2);
the clamping groove (6) integrally forms a round table cavity (61) and an annular cavity (62) along the direction of the expansion chamber (3) towards the hydraulic oil working chamber (4), and the inner diameter of the annular cavity (62) and the joint of the round table cavity (61) and the annular cavity (62) are larger than the inner diameter of the oil storage pipe (1).
2. The sealing structure of the oil storage cylinder for the pneumatic shock absorber according to claim 1, wherein an included angle between the side surface of the circular truncated cone cavity (61) and the inner wall of the oil storage tube (1) is 20-25 degrees.
3. The oil storage cylinder sealing structure for the pneumatic shock absorber according to claim 2, wherein a sealing ring (8) is sleeved on the outer periphery of the floating piston (2), and a concave annular groove (9) is arranged corresponding to the sealing ring (8).
4. A sealing structure for an oil storage cylinder of an inflatable shock absorber according to claim 3, wherein a pair of annular grooves (9) are arranged in parallel along the direction of the expansion chamber (3) towards the hydraulic oil working chamber (4), the pair of annular grooves are arranged at intervals, and a sealing ring (8) is sleeved in each annular groove (9).
5. The oil reservoir sealing structure for an air-filled shock absorber according to claim 4, wherein the expansion chamber (3) is filled with nitrogen gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320966674.1U CN220037334U (en) | 2023-04-25 | 2023-04-25 | Sealing structure for oil storage cylinder of inflatable shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320966674.1U CN220037334U (en) | 2023-04-25 | 2023-04-25 | Sealing structure for oil storage cylinder of inflatable shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220037334U true CN220037334U (en) | 2023-11-17 |
Family
ID=88740320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320966674.1U Active CN220037334U (en) | 2023-04-25 | 2023-04-25 | Sealing structure for oil storage cylinder of inflatable shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220037334U (en) |
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2023
- 2023-04-25 CN CN202320966674.1U patent/CN220037334U/en active Active
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