CN213206406U - Gas cylinder structure of shock absorber - Google Patents
Gas cylinder structure of shock absorber Download PDFInfo
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- CN213206406U CN213206406U CN202022124405.XU CN202022124405U CN213206406U CN 213206406 U CN213206406 U CN 213206406U CN 202022124405 U CN202022124405 U CN 202022124405U CN 213206406 U CN213206406 U CN 213206406U
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Abstract
The utility model relates to the technical field of shock absorbers, in particular to a shock absorber gas cylinder structure, which comprises a gas cylinder main body and a floating piston; the interior of the gas cylinder main body is hollow, and an oil through opening is formed in one end of the gas cylinder main body; the floating piston is arranged in the inner cavity of the gas cylinder body and is in interference fit with the inner wall of the gas cylinder body, the floating piston divides the inner cavity of the gas cylinder body into a first cavity and a second cavity, the first cavity is located on one side, close to the oil through port, of the second cavity, damping oil is filled in the first cavity, and nitrogen is filled in the second cavity. The utility model discloses utilize floating piston compression and recover nitrogen pressure, prevent that the pressure is too big in the compression stroke, shortened and recovered the empty stroke of stroke to make the holistic damping performance of bumper shock absorber obtain promoting.
Description
Technical Field
The utility model relates to a bumper shock absorber technical field especially relates to a bumper shock absorber gas cylinder structure.
Background
At present, a gas cylinder assembly in a shock absorber generally comprises a cylinder body, and a compression member and a partition member which are arranged in an inner cavity of the cylinder body, wherein the compression member is generally a spring and plays a role of supporting the partition member, and the partition member is used for separating oil and gas in the inner cavity of the cylinder body. The existing gas cylinder component of the shock absorber is limited by structural design in the oil compensation process, the oil compensation capacity is limited, a large idle stroke exists, and the whole shock absorption performance of the shock absorber is not improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a shock absorber gas cylinder structure is provided, the holistic damping performance of shock absorber can be improved.
In order to solve the technical problem, the utility model discloses a technical scheme be: a shock absorber gas cylinder structure comprises a gas cylinder main body and a floating piston;
the interior of the gas cylinder main body is hollow, and an oil through opening is formed in one end of the gas cylinder main body;
the floating piston is arranged in the inner cavity of the gas cylinder body and is in interference fit with the inner wall of the gas cylinder body, the floating piston divides the inner cavity of the gas cylinder body into a first cavity and a second cavity, the first cavity is located on one side, close to the oil through port, of the second cavity, damping oil is filled in the first cavity, and nitrogen is filled in the second cavity.
In an optional embodiment, the floating piston comprises a piston main body and an annular sealing element, the piston main body is in clearance fit with the inner wall of the gas cylinder main body, the outer wall of the piston main body is provided with a first annular assembling groove, the annular sealing element is arranged in the first annular assembling groove, the outer diameter of the annular sealing element is equal to the inner diameter of the gas cylinder main body, and the annular sealing element is in clearance fit with the piston main body.
In an optional embodiment, an end surface of the piston main body facing the oil through opening is a concave spherical surface, and an end surface of the piston main body facing away from the oil through opening is a concave spherical surface.
In an optional embodiment, the floating piston further comprises a first inner sealing ring, a second annular assembling groove is formed in the piston body on the side, away from the oil through opening, of the first annular assembling groove, the first inner sealing ring is embedded in the second annular assembling groove, and the first inner sealing ring is in interference fit with the inner wall of the gas cylinder body.
In an optional embodiment, the damper gas cylinder structure further comprises an inflation cover, and the gas cylinder body is provided with an assembly opening for mounting the inflation cover at one end far away from the oil through opening.
In an optional embodiment, the inflation cover is in clearance fit with the inner wall of the gas cylinder body, a third annular assembly groove is formed in the outer wall of the inflation cover, a second inner sealing ring is embedded in the third annular assembly groove, and the second inner sealing ring is in interference fit with the inner wall of the gas cylinder body.
In an optional embodiment, a fourth annular assembly groove is formed in one side, away from the oil through opening, of the outer wall of the inflation cover, a fifth annular assembly groove is formed in the inner wall of the assembly opening, and the fourth annular assembly groove and the fifth annular assembly groove are sealed through a third inner sealing ring.
In an optional embodiment, the gas cylinder structure of the shock absorber further comprises a screw, the gas filling cover is provided with a counter bore from the end surface far away from the oil through port to the end surface close to the oil through port, and the screw is in threaded fit with the counter bore.
In optional embodiment, bumper shock absorber gas cylinder structure still includes the rubber buffer, it is being close to aerify the lid correspond on the terminal surface of oil through-hole department is equipped with the mounting groove, the rubber buffer inlays to be established in the mounting groove, the screw with it is sealed through fourth inner seal circle to aerify between the lid.
In an optional embodiment, the gas cylinder body is provided with an external assembling thread and a sixth annular assembling groove in sequence from the outer wall close to one end of the oil through port to the other end of the gas cylinder body, and an external sealing ring is embedded in the sixth annular assembling groove.
The beneficial effects of the utility model reside in that: the utility model provides a bumper shock absorber gas cylinder structure, including gas cylinder main part and floating piston, be equipped with the logical oil mouth that link up to the bottle inner chamber in the one end of gas cylinder main part, it is used for compensating shock attenuation fluid to lead to the oil mouth, floating piston separates the inner chamber of gas cylinder main part for first cavity and second cavity, make the bumper shock absorber compression stroke in the first cavity, the nitrogen gas of pre-charging in stroke compensation shock attenuation oil and the second cavity of recovering separates completely, utilize floating piston compression and recover nitrogen pressure, it is too big to prevent to press in the compression stroke, the stroke idle stroke of recovering has been shortened, thereby make the holistic damping performance of bumper shock absorber obtain promoting.
Drawings
Fig. 1 is a schematic structural view of a gas cylinder structure of a shock absorber according to an embodiment of the present invention;
description of reference numerals:
1. a gas cylinder main body; 11. an oil through hole; 12. a first chamber; 13. a second chamber; 14. an assembly port; 141. a fifth annular assembly groove; 15. assembling the external thread; 16. a sixth annular assembly groove; 161. an outer sealing ring;
2. a floating piston; 21. a piston body; 211. a first annular assembly groove; 212. a second annular assembly groove; 22. an annular seal; 23. a first inner seal ring;
3. an inflatable cover; 31. a third annular assembly groove; 311. a second inner seal ring; 312. a fourth annular assembly groove; 32. a counter bore; 33. mounting grooves;
4. a third inner seal ring;
5. a screw;
6. and a rubber plug.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the present invention relates to a gas cylinder structure of a shock absorber, which comprises a gas cylinder main body and a floating piston;
the interior of the gas cylinder main body is hollow, and an oil through opening is formed in one end of the gas cylinder main body;
the floating piston is arranged in the inner cavity of the gas cylinder body and is in interference fit with the inner wall of the gas cylinder body, the floating piston divides the inner cavity of the gas cylinder body into a first cavity and a second cavity, the first cavity is located on one side, close to the oil through port, of the second cavity, damping oil is filled in the first cavity, and nitrogen is filled in the second cavity.
From the above description, the beneficial effects of the present invention are: the utility model provides a bumper shock absorber gas cylinder structure, including gas cylinder main part and floating piston, be equipped with the logical oil mouth that link up to the bottle inner chamber in the one end of gas cylinder main part, it is used for compensating shock attenuation fluid to lead to the oil mouth, floating piston separates the inner chamber of gas cylinder main part for first cavity and second cavity, make the bumper shock absorber compression stroke in the first cavity, the nitrogen gas of pre-charging in stroke compensation shock attenuation oil and the second cavity of recovering separates completely, utilize floating piston compression and recover nitrogen pressure, it is too big to prevent to press in the compression stroke, the stroke idle stroke of recovering has been shortened, thereby make the holistic damping performance of bumper shock absorber obtain promoting.
Further, the floating piston comprises a piston main body and an annular sealing element, the piston main body is in clearance fit with the inner wall of the gas cylinder main body, a first annular assembling groove is formed in the outer wall of the piston main body, the annular sealing element is arranged in the first annular assembling groove, the outer diameter of the annular sealing element is equal to the inner diameter of the gas cylinder main body, and the annular sealing element is in clearance fit with the piston main body.
From the above description, it can be known that the piston main body is in clearance fit with the inner wall of the gas cylinder main body, the annular sealing element is in close fit with the inner wall of the gas cylinder main body, and meanwhile, the annular sealing element is in clearance fit with the piston main body, so that the flexible adjustment performance of the floating piston is ensured, the abrasion is reduced, and the service life of the part is prolonged.
Furthermore, the piston main body faces the end face of the oil through opening and is an inwards concave spherical surface, and the piston main body backs on the end face of the oil through opening and is an inwards concave spherical surface.
From the above description, it can be known that the volume of the inner cavity of the piston main body is increased by adopting the spherical structure design, so that the gas and liquid compression compensation capability is better, the contact area of the piston main body and the damping oil or nitrogen is increased, and the stability of the floating stroke of the piston main body is improved.
Further, the floating piston further comprises a first inner sealing ring, the piston main body is located on one side, away from the oil through port, of the first annular assembling groove, a second annular assembling groove is formed in one side, embedded in the second annular assembling groove, and the first inner sealing ring is in interference fit with the inner wall of the gas cylinder main body.
As can be seen from the above description, the first inner sealing ring is used to divide the inner cavity of the gas cylinder body into a first chamber and a second chamber, so that the shock absorber compression stroke and the shock absorber recovery stroke compensation shock absorber oil in the first chamber are completely separated from the nitrogen gas pre-charged in the second chamber.
Furthermore, the gas cylinder structure of the shock absorber further comprises an inflating cover, and an assembling port for installing the inflating cover is arranged at one end, away from the oil through port, of the gas cylinder body.
From the above description, it can be seen that the gas-filled cap serves to facilitate adjustment of the volume of nitrogen gas prefilled in the gas cylinder main body.
Further the gas filling cover with the inner wall clearance fit of gas cylinder main part, the outer wall of gas filling cover is equipped with third annular assembly groove, the embedded second inner seal circle that is equipped with of third annular assembly groove, the second inner seal circle with the inner wall interference fit of gas cylinder main part.
From the above description, the second inner sealing ring is used to ensure the sealing performance of the gas filling cover and the gas cylinder main body.
Furthermore, the outer wall of the inflation cover is located on one side, away from the oil through opening, of the third annular assembly groove, a fourth annular assembly groove is formed in one side, away from the third annular assembly groove, the inner wall of the assembly opening is provided with a fifth annular assembly groove, and the fourth annular assembly groove and the fifth annular assembly groove are sealed through a third inner sealing ring.
From the above description, it can be seen that the third inner seal ring seal further improves the sealing of the gas-filled cap with the gas cylinder body.
Furthermore, the gas cylinder structure of the shock absorber further comprises a screw, a counter bore is formed in the end face, far away from the oil through port, of the gas filling cover towards the end face, close to the oil through port, of the gas filling cover, and the screw is in threaded fit with the counter bore.
From the above description, the screw plays the effect of conveniently filling and discharging the operation, need not whole dismouting inflation lid, labour saving and time saving.
Further, bumper shock absorber gas cylinder structure still includes the rubber buffer, it is being close to aerify the lid correspond on the terminal surface of logical hydraulic fluid port counter bore department is equipped with the mounting groove, the rubber buffer inlays to be established in the mounting groove, the screw with it is sealed through fourth inner seal circle to aerify between the lid.
From the above description, the rubber buffer and the fourth inner seal ring are sealed to prevent the nitrogen leakage.
Furthermore, the outer wall of the gas cylinder body close to one end of the oil through port is sequentially provided with an assembling external thread and a sixth annular assembling groove towards the other end of the gas cylinder body, and an external sealing ring is embedded in the sixth annular assembling groove.
As can be seen from the above description, the external thread and the external sealing ring are respectively assembled to ensure the stability and the sealing performance of the connection structure of the gas cylinder main body and other components (such as an aluminum seat).
Referring to fig. 1, a first embodiment of the present invention is: a gas cylinder structure of a shock absorber comprises a gas cylinder main body 1 and a floating piston 2;
the gas cylinder main body 1 is hollow and is provided with an oil through hole 11 at one end;
the floating piston 2 is arranged in the inner cavity of the gas cylinder body 1, the floating piston 2 is in interference fit with the inner wall of the gas cylinder body 1, the floating piston 2 divides the inner cavity of the gas cylinder body 1 into a first cavity 12 and a second cavity 13, the first cavity 12 is located on one side, close to the oil through opening 11, of the second cavity 13, damping oil is filled in the first cavity 12, and nitrogen is filled in the second cavity 13.
The floating piston 2 comprises a piston main body 21 and an annular sealing element 22, the piston main body 21 is in clearance fit with the inner wall of the gas cylinder main body 1, a first annular assembling groove 211 is formed in the outer wall of the piston main body 21, the annular sealing element 22 is arranged in the first annular assembling groove 211, the outer diameter of the annular sealing element 22 is equal to the inner diameter of the gas cylinder main body 1, and the annular sealing element 22 is in clearance fit with the piston main body 21. The end face of the piston main body 21 facing the oil through opening 11 is a concave spherical surface, and the end face of the piston main body 21 back to the oil through opening 11 is a concave spherical surface. The floating piston 2 further comprises a first inner sealing ring 23, the piston main body 21 is located the first annular assembling groove 211 is far away from one side of the oil through hole 11, a second annular assembling groove 212 is arranged, the first inner sealing ring 23 is embedded in the second annular assembling groove 212, and the first inner sealing ring 23 is in interference fit with the inner wall of the gas cylinder main body 1. The gas cylinder structure of the shock absorber further comprises an inflating cover 3, and an assembling port 14 for installing the inflating cover 3 is formed in one end, far away from the oil through port 11, of the gas cylinder body 1. The gas filling cover 3 is in clearance fit with the inner wall of the gas cylinder body 1, the outer wall of the gas filling cover 3 is provided with a third annular assembly groove 31, a second inner sealing ring 311 is embedded in the third annular assembly groove 31, and the second inner sealing ring 311 is in interference fit with the inner wall of the gas cylinder body 1. The outer wall of the inflating cover 3 is located on one side, away from the oil through opening 11, of the third annular assembling groove 31, and is provided with a fourth annular assembling groove 312, the inner wall of the assembling opening 14 is provided with a fifth annular assembling groove 141, and the fourth annular assembling groove 312 and the fifth annular assembling groove 141 are sealed through a third inner sealing ring 4. The gas cylinder structure of the shock absorber further comprises a screw 5, a counter bore 32 is formed in the end face, far away from the oil through hole 11, of the gas filling cover 3 towards the end face, close to the oil through hole 11, of the gas filling cover, and the screw 5 is in threaded fit with the counter bore 32. The shock absorber gas cylinder structure still includes rubber buffer 6, it is being close to aerify to cover 3 correspond on the terminal surface of logical hydraulic fluid port 11 counter bore 32 department is equipped with mounting groove 33, rubber buffer 6 inlays to be established in mounting groove 33, screw 5 with it is sealed through fourth inner seal circle to aerify between the cover 3. The gas cylinder body 1 is provided with an assembling external thread 15 and a sixth annular assembling groove 16 in sequence from the outer wall close to one end of the oil through hole 11 to the other end of the gas cylinder body 1, and an outer sealing ring 161 is embedded in the sixth annular assembling groove 16.
To sum up, the utility model provides a bumper shock absorber gas cylinder structure, including gas cylinder main part and floating piston, be equipped with the logical oil mouth that link up to the bottle inner chamber in the one end of gas cylinder main part, lead to the oil mouth and be used for compensating shock attenuation fluid, floating piston separates the inner chamber of gas cylinder main part for first cavity and second cavity, make the bumper shock absorber compression stroke in the first cavity, reset the nitrogen gas of pre-charge in stroke compensation shock attenuation oil and the second cavity and separate completely, utilize floating piston compression and reset nitrogen pressure, it is too big to prevent to press in the compression stroke, the stroke idle stroke that has shortened and reset, thereby make the holistic damping performance of bumper shock absorber obtain promoting.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A shock absorber gas cylinder structure is characterized by comprising a gas cylinder main body and a floating piston;
the interior of the gas cylinder main body is hollow, and an oil through opening is formed in one end of the gas cylinder main body;
the floating piston is arranged in the inner cavity of the gas cylinder body and is in interference fit with the inner wall of the gas cylinder body, the floating piston divides the inner cavity of the gas cylinder body into a first cavity and a second cavity, the first cavity is located on one side, close to the oil through port, of the second cavity, damping oil is filled in the first cavity, and nitrogen is filled in the second cavity.
2. The shock absorber gas cylinder structure according to claim 1, wherein the floating piston includes a piston main body that is clearance-fitted to an inner wall of the gas cylinder main body, and an annular seal member that is provided on an outer wall of the piston main body with a first annular fitting groove, the annular seal member being provided in the first annular fitting groove, an outer diameter of the annular seal member being equal to an inner diameter of the gas cylinder main body, the annular seal member being clearance-fitted to the piston main body.
3. The shock absorber gas cylinder structure according to claim 2, wherein an end face of the piston main body facing the oil through port is a concave spherical surface, and an end face of the piston main body facing away from the oil through port is a concave spherical surface.
4. The shock absorber gas cylinder structure according to claim 2, wherein the floating piston further comprises a first inner sealing ring, a second annular assembling groove is formed in the side, away from the oil through opening, of the piston body, the first annular assembling groove is embedded in the second annular assembling groove, and the first inner sealing ring is in interference fit with the inner wall of the gas cylinder body.
5. The shock absorber gas cylinder structure according to claim 1, further comprising an inflation cap, wherein the gas cylinder body is provided with an assembly opening for mounting the inflation cap at an end remote from the oil through opening.
6. The shock absorber gas cylinder structure according to claim 5, wherein the gas filling cover is in clearance fit with the inner wall of the gas cylinder main body, a third annular assembling groove is formed in the outer wall of the gas filling cover, a second inner sealing ring is embedded in the third annular assembling groove, and the second inner sealing ring is in interference fit with the inner wall of the gas cylinder main body.
7. The shock absorber gas cylinder structure according to claim 6, wherein a fourth annular assembly groove is formed in the outer wall of the inflation cover on the side, away from the oil through opening, of the third annular assembly groove, a fifth annular assembly groove is formed in the inner wall of the assembly opening, and the fourth annular assembly groove and the fifth annular assembly groove are sealed through a third inner sealing ring.
8. The shock absorber gas cylinder structure according to claim 5, further comprising a screw, wherein the inflation cover is provided with a counter bore from the end surface far away from the oil through port to the end surface close to the oil through port, and the screw is in threaded fit with the counter bore.
9. The shock absorber gas cylinder structure according to claim 8, further comprising a rubber plug, wherein the inflation cover is provided with a mounting groove corresponding to the counter bore on the end surface close to the oil passage, the rubber plug is embedded in the mounting groove, and the screw and the inflation cover are sealed by a fourth inner sealing ring.
10. The shock absorber gas cylinder structure according to claim 1, wherein an external assembling thread and a sixth annular assembling groove are sequentially formed in the outer wall of the gas cylinder body close to one end of the oil through port towards the other end of the gas cylinder body, and an outer sealing ring is embedded in the sixth annular assembling groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022124405.XU CN213206406U (en) | 2020-09-24 | 2020-09-24 | Gas cylinder structure of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022124405.XU CN213206406U (en) | 2020-09-24 | 2020-09-24 | Gas cylinder structure of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213206406U true CN213206406U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022124405.XU Active CN213206406U (en) | 2020-09-24 | 2020-09-24 | Gas cylinder structure of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213206406U (en) |
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2020
- 2020-09-24 CN CN202022124405.XU patent/CN213206406U/en active Active
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