CN203214752U - Floating piston inverted shock absorber - Google Patents
Floating piston inverted shock absorber Download PDFInfo
- Publication number
- CN203214752U CN203214752U CN 201220702855 CN201220702855U CN203214752U CN 203214752 U CN203214752 U CN 203214752U CN 201220702855 CN201220702855 CN 201220702855 CN 201220702855 U CN201220702855 U CN 201220702855U CN 203214752 U CN203214752 U CN 203214752U
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- CN
- China
- Prior art keywords
- active chamber
- piston
- floating piston
- pressure cylinder
- breeches pipe
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- Withdrawn - After Issue
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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a floating piston inverted shock absorber comprising a bottom barrel, a sleeve and a fork tube with a closed structure, wherein the front end of the fork tube is fixed in the bottom barrel and the rear end of the fork tube is sleeved in the sleeve. A connecting rod is coaxially fixed in the sleeve. The front end of the connecting rod is extended into the fork tube from the bottom on the rear end of the fork tube. A piston and a shock-absorbing spring are fixed on the front end of the connecting rod. Both the piston and the shock-absorbing spring are arranged in the fork tube, and the piston divides the fork tube into a first working chamber and a second working chamber which communicate with each other. The floating piston inverted shock absorber further comprises a high-pressure cylinder assembly which is fixed in the fork tube and is used for eliminating the indicated idle stroke phenomenon of the shock absorber. The floating piston inverted shock absorber effectively eliminates the indicated idle stroke phenomenon caused by the cutoff of flowing oil, and effectively guarantees the stability of a damping force in the fork tube, and therefore, a stable and lasting shock-absorbing effect of the floating piston inverted shock absorber is guaranteed, and the stability of a vehicle running on a bumpy road and the comfort of a driver and passengers are further guaranteed.
Description
Technical field
The utility model relates to a kind of damping device for vehicle, relates in particular to a kind of floating piston upside-down vibration damper.
Background technique
The application of vibration damper in automobile is very general, extensively adopt hydraulic damper in the automobile suspension system, when vehicle frame and vehicle bridge are done when moving back and forth in the cylinder barrel (or breeches pipe) of reciprocal relative movement youngster piston at vibration damper, fluid in the vibration damper housing just flows into another inner chamber from inner chamber by some narrow holes repeatedly, at this moment, the interior friction of the friction of liquid and inwall and fluid molecule just forms the damping force to vibration, in existing hydraulic shock absorber, comprise positively fixed type vibration damper and floating piston upside-down vibration damper, and existing floating piston upside-down vibration damper generally comprises end tube, breeches pipe, sleeve, connecting rod and piston, though the floating piston upside-down vibration damper of this structure can play damping effect, but in use the fluid in the breeches pipe mixes the back when flowing through piston with air, its damping force instability, fluid mobile is easy to generate and interrupts and cause and show merit idle running phenomenon, vibration damper is fluctuation of service in follow-up use, damping effect reduces greatly, thereby influence vehicle smoothness under steam, and existing vibration damper complex structure, efficiency of assembling is low, the manufacturing cost height.
Therefore, need to propose a kind of novel floating piston upside-down vibration damper, that can eliminate vibration damper effectively shows merit idle running phenomenon, ensure the stable of damping force, thereby guaranteed the stable of vibration damper and the smoothness that vehicle travels, and simple in structure, easily manufactured, with low cost.
The model utility content
In view of this, a kind of floating piston upside-down vibration damper that the utility model provides, that can eliminate vibration damper effectively shows merit idle running phenomenon, ensure the stable of damping force, thereby the stable of vibration damper and the smoothness that vehicle travels have been guaranteed, and it is simple in structure, easily manufactured, with low cost.
A kind of floating piston upside-down vibration damper that the utility model provides, comprise that end tube, sleeve and front end are fixedly set in the breeches pipe that is placed in the enclosed construction of sleeve in end tube and the rear end, the coaxial connecting rod that is set with of described sleeve, the front end that the front end of described connecting rod stretches into breeches pipe and described connecting rod from the bottom, rear end of described breeches pipe is set with piston and damping spring, and described piston and damping spring all are arranged at first active chamber and second active chamber that described breeches pipe is inner and described piston is interconnected breeches pipe isolation formation; Also comprise the high-pressure cylinder assembly that shows merit idle running phenomenon that is used for eliminating vibration damper that is fixedly set in the described breeches pipe;
Further, described high-pressure cylinder assembly comprises that the rear end is the high pressure cylinder body of seal structure and is arranged at the interior floating piston of high pressure cylinder body, described floating piston is isolated described high pressure cylinder body and is formed the 3rd active chamber that is communicated with described first active chamber and the 4th airtight active chamber, the interior gassy of described the 4th active chamber; The front end of described high pressure cylinder body is fixedly set in the front end of described breeches pipe, and the rear end bottom outside of described high pressure cylinder body is fixedlyed connected with described damping spring;
Further, described piston is provided with for the through hole with first active chamber and the connection of second active chamber, and the axis of described through hole is parallel with the axis of piston;
Further, all be filled with damping fluid in described first active chamber, second active chamber and the 3rd active chamber;
Further, described breeches pipe is set with and makes it form front cover and the rear end cover of seal structure, and described front cover is fixedlyed connected with the front end of described high pressure cylinder body, and described rear end cover hermetically sealed case is in described connecting rod;
Further, the front end of described connecting rod is coaxial is set with the place ahead that damping spring land and described damping spring land are positioned at piston.
The beneficial effects of the utility model: the floating piston upside-down vibration damper that the utility model provides, by the front end at breeches pipe the high-pressure cylinder assembly is set, when piston advances forward, fluid in first active chamber flows to second active chamber by through hole, simultaneously because the pressure effect, thereby part fluid is pressed into and promotes floating piston end motion behind the high pressure cylinder body in the 3rd active chamber, make the gas compression in the 4th active chamber form pressurized gas, when piston moves backward, travel forward under the pressure of the pressurized gas of floating piston in the 4th active chamber, thereby the fluid in the 3rd active chamber is expressed in first active chamber and then the rear end of piston toward breeches pipe promoted, fluid in second active chamber is flow back in first active chamber, make piston get back to the rear end of breeches pipe, eliminated effectively because the pressure effect of the fluid in second active chamber makes piston be difficult to get back to the breeches pipe rear end causes that the fluid flow disruption causes and show merit idle running phenomenon, guaranteed the stability of breeches pipe internal damping power effectively, thereby assurance floating piston upside-down vibration damper is stablized lasting damping effect, and then guaranteed stationarity and the comfort of drivers and passengers of vehicle at the road traveling that jolts, and, the utility model simple and stable structure, easily manufactured, with low cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure, a kind of floating piston upside-down vibration damper that the utility model provides, comprise end tube 1, sleeve 9 and front end are fixedly set in the breeches pipe 7 of the enclosed construction that is placed in sleeve 9 in end tube 1 and the rear end, the described sleeve 9 coaxial connecting rods 15 that are set with, the front end that the front end of described connecting rod 15 stretches into breeches pipe 7 and described connecting rod 15 from the bottom, rear end of described breeches pipe 7 is set with piston 11 and damping spring 10, and described piston 11 and damping spring 10 all are arranged at described breeches pipe 7 inside and described piston 11 is isolated first active chamber 8 and second active chamber 13 that formation is interconnected with breeches pipe 7; Also comprise the high-pressure cylinder assembly that shows merit idle running phenomenon that is used for eliminating vibration damper that is fixedly set in the described breeches pipe 7; All be filled with damping fluid in described first active chamber 8, second active chamber 13 and the 3rd active chamber 4, the interior wall friction of described fluid and breeches pipe 7 forms the damping force to vibration; The floating piston upside-down vibration damper that the utility model provides, by the front end at breeches pipe the high-pressure cylinder assembly is set, when piston advances forward, fluid in first active chamber flows to second active chamber by through hole, simultaneously because the pressure effect, thereby part fluid is pressed into and promotes floating piston end motion behind the high pressure cylinder body in the 3rd active chamber, make the gas compression in the 4th active chamber form pressurized gas, when piston moves backward, travel forward under the pressure of the pressurized gas of floating piston in the 4th active chamber, thereby the fluid in the 3rd active chamber is expressed in first active chamber and then the rear end of piston toward breeches pipe promoted, fluid in second active chamber is flow back in first active chamber, make piston get back to the rear end of breeches pipe, eliminated effectively because the pressure effect of the fluid in second active chamber makes piston be difficult to get back to the breeches pipe rear end causes that the fluid flow disruption causes and show merit idle running phenomenon, guaranteed the stability of breeches pipe internal damping power effectively, thereby assurance floating piston upside-down vibration damper is stablized lasting damping effect, and then guaranteed stationarity and the comfort of drivers and passengers of vehicle at the road traveling that jolts, and, the utility model simple and stable structure, easily manufactured, with low cost.
In the present embodiment, described high-pressure cylinder assembly comprises that the rear end is the high pressure cylinder body 5 and the floating piston 16 that is arranged in the high pressure cylinder body 5 of seal structure, described floating piston 16 is isolated described high pressure cylinder body 5 and is formed the 3rd active chamber 4 that is communicated with described first active chamber 8 and the 4th airtight active chamber 6, described the 4th active chamber 6 interior gassies; The front end of described high pressure cylinder body 5 is fixedly set in the front end of described breeches pipe 7, and the rear end bottom outside of described high pressure cylinder body 5 is fixedlyed connected with described damping spring 10; This structure, thereby making fluid promote floating piston in piston advances forward moves backward with the formation of the gas in the 4th active chamber pressurized gas, when the pressure that is beneficial to pressurized gas is replied piston the fluid in second active chamber is expressed into first active chamber, guarantee the lasting mobile of fluid, that has eliminated vibration damper effectively shows merit idle running phenomenon, guarantees the stable of damping force.
In the present embodiment, described piston 11 is provided with for the through hole 12 with first active chamber 8 and 13 connections of second active chamber, and the axis of described through hole 12 is parallel with the axis of piston 11; This structure is beneficial to fluid is exchanged between first active chamber and second active chamber, guarantees the lasting smooth flow of fluid, eliminates and shows merit idle running phenomenon, guarantees the stable of damping force.
In this enforcement, described breeches pipe 7 is set with and makes it form front cover 3 and the rear end cover 14 of seal structure, described front cover 3 is fixedlyed connected with the front end of described high pressure cylinder body 5, can adopt the mode of welding, certainly, other can guarantee the Placement of structural strength and sealability, all can realize function of the present utility model, and front cover 3 is fixed in breeches pipe 7 on the end tube by bolted mode, be beneficial to and make and assembling, improve and make efficient, described rear end cover 14 hermetically sealed cases are in described connecting rod 15; Certainly, be provided with seal washer 2 at front cover, rear end cover and floating piston; This structure is beneficial to assembling of the present utility model, improves and makes efficient, guarantees the sealing of the cavity in the breeches pipe, improves damping performance.
In the present embodiment, the front end of described connecting rod 15 is coaxial to be set with the place ahead that damping spring land 17 and described damping spring land 17 are positioned at piston 11, and linkage structure is stable, guarantees that vibration damper works continually and steadily.
In the present embodiment, before the A direction is among Fig. 1, after the B direction is, the front end rear end of described each parts all with reference to A among Fig. 1 to B to definition.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. floating piston upside-down vibration damper, it is characterized in that: comprise that end tube, sleeve and front end are fixedly set in the breeches pipe that is placed in the enclosed construction of sleeve in end tube and the rear end, the coaxial connecting rod that is set with of described sleeve, the front end that the front end of described connecting rod stretches into breeches pipe and described connecting rod from the bottom, rear end of described breeches pipe is set with piston and damping spring, and described piston and damping spring all are arranged at first active chamber and second active chamber that described breeches pipe is inner and described piston is interconnected breeches pipe isolation formation; Also comprise the high-pressure cylinder assembly that shows merit idle running phenomenon that is used for eliminating vibration damper that is fixedly set in the described breeches pipe.
2. according to the described floating piston upside-down of claim 1 vibration damper, it is characterized in that: described high-pressure cylinder assembly comprises that the rear end is the high pressure cylinder body of seal structure and is arranged at the interior floating piston of high pressure cylinder body, described floating piston is isolated described high pressure cylinder body and is formed the 3rd active chamber that is communicated with described first active chamber and the 4th airtight active chamber, the interior gassy of described the 4th active chamber; The front end of described high pressure cylinder body is fixedly set in the front end of described breeches pipe, and the rear end bottom outside of described high pressure cylinder body is fixedlyed connected with described damping spring.
3. according to the described floating piston upside-down of claim 2 vibration damper, it is characterized in that: described piston is provided with for the through hole with first active chamber and the connection of second active chamber, and the axis of described through hole is parallel with the axis of piston.
4. according to the described floating piston upside-down of claim 3 vibration damper, it is characterized in that: all be filled with damping fluid in described first active chamber, second active chamber and the 3rd active chamber.
5. according to the described floating piston upside-down of claim 4 vibration damper, it is characterized in that: described breeches pipe is set with and makes it form front cover and the rear end cover of seal structure, described front cover is fixedlyed connected with the front end of described high pressure cylinder body, and described rear end cover hermetically sealed case is in described connecting rod.
6. according to the described floating piston upside-down of claim 5 vibration damper, it is characterized in that: the front end of described connecting rod is coaxial to be set with the place ahead that damping spring land and described damping spring land are positioned at piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702855 CN203214752U (en) | 2012-12-18 | 2012-12-18 | Floating piston inverted shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702855 CN203214752U (en) | 2012-12-18 | 2012-12-18 | Floating piston inverted shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214752U true CN203214752U (en) | 2013-09-25 |
Family
ID=49204294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220702855 Withdrawn - After Issue CN203214752U (en) | 2012-12-18 | 2012-12-18 | Floating piston inverted shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016606A (en) * | 2012-12-18 | 2013-04-03 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
-
2012
- 2012-12-18 CN CN 201220702855 patent/CN203214752U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016606A (en) * | 2012-12-18 | 2013-04-03 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
| CN103016606B (en) * | 2012-12-18 | 2015-07-01 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130925 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |