CN203717769U - Damping piston with high damping coefficient for hydraulic damper - Google Patents
Damping piston with high damping coefficient for hydraulic damper Download PDFInfo
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- CN203717769U CN203717769U CN201420120727.9U CN201420120727U CN203717769U CN 203717769 U CN203717769 U CN 203717769U CN 201420120727 U CN201420120727 U CN 201420120727U CN 203717769 U CN203717769 U CN 203717769U
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- piston
- damping
- annular groove
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Abstract
The utility model discloses a damping piston with a high damping coefficient for a hydraulic damper. The damping piston comprises a piston body, wherein a piston rod is inserted into one end of the piston body, a piston rubber ring is arranged in an annular groove of the piston body in a sleeved mode, a gap is reserved between the piston rubber ring and the annular groove, the groove walls on the two sides of the annular groove are respectively provided with flow leakage passageways, the flow leakage passageways on the side close to the piston rod are higher than the joint of the piston rubber ring and the groove wall in the radial direction, the flow leakage passageways on the other side are lower than the joint of the piston rubber ring and the groove wall, the end, provided with the piston rod in an inserted mode, of the piston body is provided with a gasket which is arranged on the piston rod in a penetrating mode and tightly attached to the end face, a through hole communicated with the annular groove is formed in the end face, a limiting groove extending in the end face is formed in the end face, one end of the limiting groove is communicated with the through hole, and the other end of the limiting groove is communicated with the first flow leakage passageways. According to the damping piston, the damping intensity of the damper is improved by increasing the length of a limiting passageway, and compared with a method for improving the damping intensity of the damper by narrowing the limiting passageway, the damping piston has higher operability and practicability from the aspects of the machining difficulty and production efficiency.
Description
Technical field
The utility model relates to a kind of hydraulic damper technical field, refers in particular to the damping piston of hydraulic damper.
Background technique
Hydraulic damper is by the feed speed of damping piston is controlled in desired scope, realizes damping function.More existing hydraulic dampers, its damping piston is integrated with the function of damping control valve conventionally, on piston only, be formed with circumferential annular groove, on annular groove, be set with the piston cushion rubber that forms sealing with the casing wall of hydraulic jack, between piston cushion rubber and annular groove, leave gap axially and radially, piston cushion rubber can be in axial sliding in annular groove.On the both sides cell wall of annular groove, be formed with current by pass, wherein the current by pass of a side exceeds the joint place of piston cushion rubber and this side channel wall diametrically, and on this side channel wall, be formed with current limliting through hole, this through hole is the low joint place of crossing piston cushion rubber and this side channel wall diametrically; And the current by pass of the opposite side low joint place of crossing piston cushion rubber and this side channel wall diametrically.The piston rod that has been applied in external force when damping piston promotes when having this side shifting of lower current by pass, piston cushion rubber can slide to and be close to this side channel wall with higher current by pass, now, the hydraulic oil at damping piston two ends can only flow by current limliting through hole, to control the feed speed of damping piston, play damping function; After external force is cancelled, under the effect of Returnning spring, damping piston returns, piston cushion rubber can slide to this side channel wall with lower current by pass, now, the current by pass of both sides is communicated with by the gap between piston cushion rubber and annular groove bottom land, and the hydraulic oil at damping piston two ends can flow by current limliting through hole and current by pass, damping piston can fast return, loses damping function.
It is relevant that the damping force of hydraulic damper and hydraulic oil flow through the flow velocity of restricted flow passage of damping piston, and flow velocity is relevant with the viscous damping force of hydraulic oil with the aperture of restricted flow passage.If improve the damping force of hydraulic damper, be the most directly to reduce restricted flow passage, but too small restricted flow passage, because difficulty of processing is high, is difficult to realize on producing.And the hydraulic oil of selecting high viscosity coefficient improves viscous damping force and also has narrow limitation, the damping force can increase damper and reset time, obviously, this method is also unpractical.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of on producing, and can realize easily damper and have the damping piston of high damping.
For solving the problems of the technologies described above adopted technological scheme: a kind of damping piston of the hydraulic damper with high damping coefficient, include piston only, one end of piston only is formed with the plug-in opening of plug-in mounting piston rod, on piston only, be formed with circumferential annular groove, on annular groove, be set with piston cushion rubber, between piston cushion rubber and annular groove, leave gap axially and radially, on the cell wall of this side of next-door neighbour's piston rod of annular groove, be formed with the first current by pass that exceeds diametrically piston cushion rubber and this side channel wall joint place, on the cell wall away from this side of piston rod of annular groove, be formed with low the second current by pass of crossing piston cushion rubber and this side channel wall joint place diametrically, it is characterized in that: that end face of the plug-in mounting piston rod of piston only is set as smooth faying surface, and be provided with and be installed on the pad of being close to this end face on piston rod at this end, and the current limliting groove that offers the through hole of connected ring connected in star and extend in this end face on this end face, one end of current limliting groove is communicated with through hole, the other end is communicated with the first current by pass.
The beneficial effect that adopts the utility model to bring: the end face that the restricted flow passage of damping piston is located to piston due to the utility model extends, on limited piston only, extend as much as possible like this length of restricted flow passage, effectively increased hydraulic oil and flow through the viscous resistance of restricted flow passage.This damping dynamics that improves damper by extending the length of restricted flow passage, contrasts traditional passing through and reduces restricted flow passage, no matter in the complexity and manufacturing efficiency of processing, has more operability and practicability.The formation of current limliting groove, on producing, can be by injection moulding once-through, convenient processing, manufacturing efficiency is high.And the size of current limliting groove can obtain accurate-size by mould, that is to say and can obtain current limliting speed accurately, thereby can make hydraulic damper there is accurate damping dynamics.And traditional process metering hole by boring, because bore size error is large, be difficult to guarantee that hydraulic damper has accurate damping dynamics.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model damping piston.
Embodiment
As shown in Figure 1, a kind of damping piston of hydraulic damper, include piston only 1, one end of piston only 1 is formed with the plug-in opening 11 of plug-in mounting piston rod, on piston only 1, be formed with circumferential annular groove 12, on annular groove 12, be set with piston cushion rubber 2, between piston cushion rubber 2 and annular groove 12, leave gap axially and radially, on the cell wall of this side of next-door neighbour's piston rod of annular groove 12, be formed with the first current by pass 13 that exceeds diametrically piston cushion rubber 2 and this side channel wall joint place, on the cell wall away from this side of piston rod of annular groove 12, be formed with low the second current by pass 14 of crossing piston cushion rubber 2 and this side channel wall joint place diametrically, that end face of the plug-in mounting piston rod of piston only 1 is set as smooth faying surface, and be provided with and be installed on the pad 3 of being close to this end face on piston rod at this end, this pad 3 is headed on the end face that is adjacent to piston only 1 by the shaft shoulder on piston rod, and the current limliting groove 16 that offers the through hole 15 of connected ring connected in star 12 and extend in this end face on this end face, through hole 15 is the low joint place of crossing piston cushion rubber 2 and annular groove 12 cell walls diametrically, one end of current limliting groove 16 is communicated with through hole 15, the other end is communicated with the first current by pass 13.
In the time that piston only 1 has been applied in past this side shifting away from piston rod of piston rod promotion of external force, piston cushion rubber 2 can slide to and be close to this side channel wall that is formed with the first current by pass 13, now, hydraulic oil can only flow through through hole 15 and current limliting groove 16, finally flow out from the first current by pass 13, play damping function; After external force is cancelled, under the effect of Returnning spring, piston only 1 returns, piston cushion rubber 2 can slide to this side channel wall that forms the second current by pass 14, now, the first current by pass 13 and the second current by pass 14 are communicated with by the gap between piston cushion rubber 2 and annular groove bottom land, and hydraulic oil can flow by restricted flow passage and current by pass, damping piston can fast return, loses damping function.
Claims (1)
1. one kind has the damping piston of the hydraulic damper of high damping coefficient, include piston only, one end of piston only is formed with the plug-in opening of plug-in mounting piston rod, on piston only, be formed with circumferential annular groove, on annular groove, be set with piston cushion rubber, between piston cushion rubber and annular groove, leave gap axially and radially, on the cell wall of this side of next-door neighbour's piston rod of annular groove, be formed with the first current by pass that exceeds diametrically piston cushion rubber and this side channel wall joint place, on the cell wall away from this side of piston rod of annular groove, be formed with low the second current by pass of crossing piston cushion rubber and this side channel wall joint place diametrically, it is characterized in that: that end face of the plug-in mounting piston rod of piston only is set as smooth faying surface, and be provided with and be installed on the pad of being close to this end face on piston rod at this end, and the current limliting groove that offers the through hole of connected ring connected in star and extend in this end face on this end face, one end of current limliting groove is communicated with through hole, the other end is communicated with the first current by pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120727.9U CN203717769U (en) | 2014-03-15 | 2014-03-15 | Damping piston with high damping coefficient for hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120727.9U CN203717769U (en) | 2014-03-15 | 2014-03-15 | Damping piston with high damping coefficient for hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717769U true CN203717769U (en) | 2014-07-16 |
Family
ID=51156922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420120727.9U Ceased CN203717769U (en) | 2014-03-15 | 2014-03-15 | Damping piston with high damping coefficient for hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443640A (en) * | 2015-12-31 | 2016-03-30 | 江苏明星减震器有限公司 | Piston ring of piston of shock absorber |
| CN108087480A (en) * | 2018-01-29 | 2018-05-29 | 佛山市南海区然铭力佳利五金制品有限公司 | Minitype damper and its piston |
| CN109899617A (en) * | 2019-03-21 | 2019-06-18 | 西安联飞智能装备研究院有限责任公司 | A kind of hydraulic damper and hydraulic damping device assembly |
-
2014
- 2014-03-15 CN CN201420120727.9U patent/CN203717769U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443640A (en) * | 2015-12-31 | 2016-03-30 | 江苏明星减震器有限公司 | Piston ring of piston of shock absorber |
| CN108087480A (en) * | 2018-01-29 | 2018-05-29 | 佛山市南海区然铭力佳利五金制品有限公司 | Minitype damper and its piston |
| CN109899617A (en) * | 2019-03-21 | 2019-06-18 | 西安联飞智能装备研究院有限责任公司 | A kind of hydraulic damper and hydraulic damping device assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160531 Address after: 528200, Guangdong province Foshan Nanhai District Guicheng Ping Sheng Village Industrial Zone Patentee after: Nanhai District of Foshan City, Lee Lijia gas spring factory (general partner) Address before: 528200 Guangdong Province, Foshan City Nanhai District GUI two people park district 1303 Park Pavilion Patentee before: Tang Shanpei |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200925 Address after: No.8 Jinshi Avenue (plant 1), core area of Nanhai national eco industrial demonstration park, Danzao Town, Nanhai District, Foshan City, Guangdong Province 528200 Patentee after: FOSHAN NANHAI RANMING LIJIALI HARDWARE PRODUCTS Co.,Ltd. Address before: 528200, Guangdong province Foshan Nanhai District Guicheng Ping Sheng Village Industrial Zone Patentee before: Nanhai District of Foshan City, Lee Lijia gas spring factory (general partner) |
|
| TR01 | Transfer of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20220425 Decision number of declaring invalidation: 55431 Granted publication date: 20140716 |
|
| IW01 | Full invalidation of patent right |