CN2723765Y - Double oil cylinder variable damping rear damper - Google Patents
Double oil cylinder variable damping rear damper Download PDFInfo
- Publication number
- CN2723765Y CN2723765Y CN 200420079304 CN200420079304U CN2723765Y CN 2723765 Y CN2723765 Y CN 2723765Y CN 200420079304 CN200420079304 CN 200420079304 CN 200420079304 U CN200420079304 U CN 200420079304U CN 2723765 Y CN2723765 Y CN 2723765Y
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- damping
- oil
- piston
- oil cylinder
- compression
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- Expired - Fee Related
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Abstract
The utility model relates to a double oil cylinder variable damping rear damper, comprising a lower connector, a damping spring, a damping device and an upper connector. The damping device comprises a piston-rod, a seal assembly, a guide sleeve, a buffer spring, a piston assembly and an inner oil cylinder; one end of the inner oil cylinder is connected with the guide sleeve, and the other end of the inner oil cylinder is connected with the upper connector via a damping seat; an oil hole is arranged on the inner oil cylinder. A compressing damping oil channel and a restored damping oil channel are arranged on the piston; the piston and a damping core housing are respectively connected with the both sides of the valve seat; an oil hole on the damping core housing is communicated with an oil hole on the valve seat; a compressing damping valve sheet controlling the compressing damping oil channel and a restored damping valve sheet controlling the restored damping oil channel are arranged between the piston and the valve seat. Compressing, the damping shaft extends to the oil hole of the core housing and a hole of a piston-rod, via reducing the oil flow quantity of the unit section, forms a variable compressing damping and to the maximum. The using life and the comfort of riding can be increased obviously as the variable compression damping can prevent the damper from impacting with bottom when the motorcycle is with heavy-load or is impacted strongly.
Description
Technical field
The utility model relates to a kind of vibration damper of Motor Vehicle, and the two oil cylinders that especially relate to a kind of motorcycle become the damping rear shock absorber.
Background technique
Motorcycle when trailing wheel runs into the obstacle impact, is to absorb and the attenuate shock vibrations by rear shock absorber, to improve comfort of drivers and passengers in the process of moving.Hydraulic damper behind the tradition motorcycle is decay a impact endurance test shock in the vehicle driving process of resistance that elastic buffer and oil cylinder inner fluid by damping spring are produced.This traditional hydraulic damper easily causes vibration damper to hit end phenomenon in heavy duty or when being subjected to outside intense impact, the travelling comfort driven of influence not only, but also easily vibration damper is caused damage.
Goal of the invention
The utility model is to overcome above-mentioned deficiency, provide a kind of pair of oil cylinder to become the damping rear shock absorber, when motorcycle is in heavy duty or be subjected to outside intense impact, prevent that by the compression damping that changes vibration damper from hitting the end, improve vibration damper working life and ride comfort.
The technological scheme that the utility model will solve the problems of the technologies described above is: a kind of pair of oil cylinder becomes the damping rear shock absorber, comprise link down, damping spring, damping device and upper connector, described damping device comprises and extends to inside and outside in-oil cylinder piston rod, be connected to the black box on the piston rod in turn, guide sleeve, damping spring and piston assembly, piston assembly comprises piston, valve seat and damping core retainer plate, one end and the guide sleeve of inner cylinder are tightly connected, the other end of inner cylinder is tightly connected with the damping seat that is fixed on down link, and inner cylinder is provided with the oilhole that communicates with outer oil cavity; Described piston is provided with the compression damping oil duct and restores the damping oil duct, piston and damping core retainer plate are connected to the both sides of valve seat, the oilhole of damping core retainer plate communicates with oilhole on the valve seat, be provided with the compression damping valve block of control compression damping oil duct between piston and the valve seat, also be provided with the recovery damper valve plate that the damping oil duct is restored in control between piston and the valve seat; The damping seat is connected with the damping axle, and the damping shaft extension during compression reduces the flow of unit cross-sectional area liquid oil to the hole of the oilhole of damping core retainer plate and piston rod, form the compression damping that changes, until compression damping to maximum.
Working principle of the present utility model is: when vibration damper is subjected to outside intense impact or heavy duty, the compression shock absorption spring, piston rod drives the downward link direction of piston assembly and moves axially, fluid in the lower oil cavitie is washed the compression damping valve block open by the valve seat oil duct and is entered upper oil cavitie through the compression damping oil duct of piston, the fluid of fraction enters in the outer oil cavity by the oilhole of inner cylinder simultaneously, produces a spot of compression damping; When close time link of valve seat, then the damping axle on the damping seat works, the damping axle inserts in the oilhole of damping core retainer plate, in moving axially process, make fluid pass through the runner of a variable cross section earlier, thereby form the compression damping of a variation, when the runner between damping axle and the damping core retainer plate reaches minimum clearance, make damping pressure reach maximum value gradually, prevent that effectively vibration damper from hitting the end.When restoring under the effect of piston rod at damping spring, the compression damping oil duct of compression damping valve block on closure piston under the effect of fluid then, and the fluid in the upper oil cavitie is washed open by the recovery damping oil duct of piston and is restored slit that damper valve plate enters valve seat and oil cylinder inner wall and enter lower oil cavitie and produce the recovery resistance, fluid in the outer oil cavity enters in the lower oil cavitie under the effect of negative pressure simultaneously.
After the utility model adopts technique scheme, when motorcycle is in varying load or heavy condition and when travelling on rugged road, vibration damper is under the resistance to compression pression that elastic buffer and fluid changed of damping spring, make vibration damper realize becoming damping shock absorption, can prevent effectively that rear shock absorber is being subjected to bump end phenomenon after heavy duty or the outside intense impact, prolonged the working life of vibration damper, obviously improved the damping performance of motorcycle, and obviously improved comfort of drivers and passengers, improved the smoothness of motorcycle driving.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation that the two oil cylinders of the utility model become the damping rear shock absorber.
Fig. 2 is the I place structure for amplifying schematic representation of Fig. 1.
Embodiment
See that of the present utility model pair of oil cylinder shown in Figure 1 becomes the damping rear shock absorber, comprise link 18, damping spring 3, damping device and upper connector 1 down.Following link 18 is made of lining ring in lower lift ring, the lower lift ring and axle sleeve, and same upper connector 1 also is made of lining ring in upper rings, the upper rings and axle sleeve.See shown in Figure 1, damping device comprises the inside and outside oil cylinder 15,8 that is fixedly connected on down on the link 18, be connected on the upper connector 1 and extend to piston rod 4 in the inside and outside oil cylinder 15,8, be connected black box, guide sleeve 10, damping spring 11 and piston assembly on the piston rod 4, one side of upper connector 1 is provided with dust-proof cover 2, outer oil cylinder 8 is provided with adjusts seat 20, and damping spring 3 is arranged on upper connector 1 and adjusts between the seat 20, and adjusting seat 20 is to carry out axial adjustment on the oil cylinder 8 outside.One side of outer oil cylinder 8 has black box, the sealing assembly is by oil seal cover 5, outside framework oil seal 6 constitutes, oil seal cover 5 is fixed on a side of outer oil cylinder 8 and is sealed by outside framework oil seal 6, one side of outside framework oil seal 6 has guide sleeve 10, the guide sleeve 10 that is sleeved on the piston rod 4 is tightly connected with inner cylinder 15, make piston rod 4 in guide sleeve 10, do axial motion, the other end of inner cylinder 15 and damping seat 17 are tightly connected, and damping seat 17 is fixed on again on the upper connector 1, in making, outer oil cylinder 15, oil pocket and outer oil cavity in forming between 8, on inner cylinder 15, be provided with make in, the oilhole 15-1 that outer oil cavity communicates, wear resistance and the anti-leakage of oil of the utility model for improving guide sleeve 10, in guide sleeve 10, also be pressed with composite bush 9, composite bush 9 is by from inside to outside polytetrafluoroethylene floor successively, glass fibre layer, metal frame layer and copper sheathing layer constitute, and between outside framework oil seal 6 and guide sleeve 10 dividing plate 7 are housed also
See Fig. 1, shown in 2, piston assembly comprises piston 12, valve seat 13 and damping core retainer plate 14 constitute, be provided with damping spring 11 between guide sleeve 10 and the piston 12, piston 12 is provided with compression damping oil duct 12-2 and restores damping oil duct 12-1, the position of compression damping oil duct 12-2 and recovery damping oil duct 12-1 can be provided with as required, piston 12 is connected on the valve seat 13, opposite side at valve seat 13 also is equipped with damping core retainer plate 14, the oilhole of damping core retainer plate 14 communicates with oilhole on the valve seat 13, be provided with the compression damping valve block 22 of control compression damping oil duct 12-2 between piston 12 and the valve seat 13, compression damping valve block 22 1 sides are provided with valve block spring 23, also be provided with control between piston 12 and the valve seat 13 and restore the recovery damper valve plate 21 of damping oil duct 12-1, restore damper valve plate 21 sidepieces and have the projection supporting, this projection can adopt packing ring, or be set directly on the valve seat 13, also can adopt shell fragment to withstand on a side of restoring damper valve plate 21.Be connected with damping axle 16 on the damping seat 17, the length of damping axle 16 is between 5mm～45mm, and damping core retainer plate 14 has the oilhole that matches with damping axle 16, this damping seat 17 can be made integrative-structure with following link 18, or damping seat 17 is connected with following link 18 by connecting base 19 as shown in Figure 1, and an end of outer oil cylinder 8 is sealedly connected on down between link 18 and the connecting base 19.When vibration damper compression shock absorption spring 3, at first the sub-fraction fluid in the lower oil cavitie is by the oilhole 15-1 on the inner cylinder 15, enter in the outer oil cavity, simultaneously, fluid in the lower oil cavitie is by valve seat 13, wash compression damping valve block 22 open and enter upper oil cavitie by compression damping oil duct 12-2, when damping axle 16 enters damping core retainer plate 14, because the variation of anterior oil duct sectional area, and the flow of minimizing unit cross-sectional area fluid, form the resistance to compression pression that changes, when damping axle 16 goed deep into damping core retainer plate 14, it is minimum that the runner between damping axle 16 and the damping core retainer plate 14 reaches, make damping pressure reach maximum value gradually, form the compression damping motion of a variation.See shown in Figure 2ly, the utility model preferably damping axle 16 its front portions is the awl column and matches with the oilhole of damping core retainer plate 14, forms a comparatively compression damping of moderate change.Can also be that damping axle 16 is vertical cyclindrical shape, and match, also can form the compression damping of a moderate change, along with the stroke of damping axle 16 increases, until the maximum value of compression damping with the reamer hole of damping core retainer plate 14 oilholes.
Therefore damping changing impact damper of the present utility model is when being subjected to external force intense impact or heavy duty, compression shock absorption spring 3, fraction fluid in the lower oil cavitie enters outer oil cavity, restore the recovery damping oil duct 12-1 on damper valve plate 21 closure pistons 12 simultaneously, fluid in the lower oil cavitie by piston 12, wash compression damping valve block 22 open and enter upper oil cavitie by compression damping oil duct 12-2, when damping axle 16 enters damping core retainer plate 14, form the compression damping of a variation, arrive maximum up to compression damping.In the vibration damper recuperation, the compression damping oil duct 12-2 on compression damping valve block 22 closure pistons 12 then, restoring damper valve plate 21 opens, make the fluid in the upper oil cavitie enter lower oil cavitie from restoring damping oil duct 12-1, recovery damper valve plate 21, valve seat 13 peripheries and inner cylinder 15 inwall gaps, form and restore damping, oil pocket in the fluid in the outer oil cavity sucks under the effect of negative pressure simultaneously.
For making vibration damper have stability preferably, the diameter of piston rod 4 of the present utility model is at 10mm～15mm, the internal diameter of inner cylinder 15 is arranged on 22mm～45mm, and the internal diameter of its inner cylinder 15 adopts the big cylinder diameter series of 22mm, 28mm, 30mm, 35mm, 38mm, 45mm.
Claims (8)
1, a kind of pair of oil cylinder becomes the damping rear shock absorber, comprises link (18), damping spring (3), damping device and upper connector (1) down, it is characterized in that:
A, described damping device comprise the piston rod (4) that extends in the inside and outside oil cylinder (15,8), are connected to black box, guide sleeve (10), damping spring (11) and piston assembly on the piston rod (4) in turn, piston assembly comprises piston (12), valve seat (13) and damping core retainer plate (14), one end of inner cylinder (15) and guide sleeve (10) are tightly connected, the other end of inner cylinder (15) is tightly connected with the damping seat (17) that is fixed on down link (18), and inner cylinder (15) is provided with the oilhole (15-1) that communicates with outer oil cavity;
B, described piston (12) are provided with compression damping oil duct (12-2) and restore damping oil duct (12-1), piston (12) and damping core retainer plate (14) are connected to the both sides of valve seat (13), the oilhole of damping core retainer plate (14) communicates with oilhole on the valve seat (13), be provided with the compression damping valve block (22) of control compression damping oil duct (12-2) between piston (12) and the valve seat (13), also be provided with the recovery damper valve plate (21) that damping oil duct (12-1) is restored in control between piston (12) and the valve seat (13);
C, damping seat (17) are connected with damping axle (16), and the damping axle (16) of compressive state extends in the hole of the oilhole of damping core retainer plate (14) and piston rod (4), reduces the flow of unit cross-sectional area liquid oil, forms the compression damping that changes, until compression damping to maximum.
2, the according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, it is characterized in that: its front portion of described damping axle (16) is the awl column and matches with the oilhole of damping core retainer plate (14), forms the compression damping of moderate change.
3, the according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, and it is characterized in that: described damping axle (16) be a vertical cyclindrical shape, and matches the compression damping of formation moderate change with the reamer hole of damping core retainer plate (14) oilhole.
4, one of 3 described pair of oil cylinders according to claim 1 become the damping rear shock absorber, and it is characterized in that: the length of described damping axle (16) is between 5mm～45mm.
5, according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, and it is characterized in that: the diameter of described piston rod (4) is at 10mm～15mm.
6, according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, and it is characterized in that: the cylinder diameter of described inner cylinder (15) is between 22mm～45mm.
7, according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, it is characterized in that: wear-resisting composite bush (9) is housed in the described guide sleeve (10), and composite bush (9) from inside to outside is made of polytetrafluoroethylene floor, glass fibre layer, metal frame layer and copper sheathing layer successively.
8, the according to claim 1 pair of oil cylinder becomes the damping rear shock absorber, it is characterized in that: described black box is made of the oil seal cover (5) and the outside framework oil seal (6) that are tightly connected with outer oil cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079304 CN2723765Y (en) | 2004-09-09 | 2004-09-09 | Double oil cylinder variable damping rear damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079304 CN2723765Y (en) | 2004-09-09 | 2004-09-09 | Double oil cylinder variable damping rear damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2723765Y true CN2723765Y (en) | 2005-09-07 |
Family
ID=35037391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420079304 Expired - Fee Related CN2723765Y (en) | 2004-09-09 | 2004-09-09 | Double oil cylinder variable damping rear damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2723765Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861475B (en) * | 2008-10-02 | 2012-07-04 | 萱场工业株式会社 | Front fork |
| CN104265825A (en) * | 2014-06-24 | 2015-01-07 | 江苏明星减震器有限公司 | Rear shock absorber |
| CN104455164A (en) * | 2014-12-15 | 2015-03-25 | 重庆东安渠强机械制造有限公司 | Damping shock absorber for motorcycle |
| CN104500639A (en) * | 2014-12-22 | 2015-04-08 | 重庆市安太弹簧有限责任公司 | Elastic clamping positioner |
| CN105673767A (en) * | 2015-11-23 | 2016-06-15 | 成都九鼎科技(集团)有限公司 | Damper with automatic damping compensation function |
| CN108167375A (en) * | 2018-02-23 | 2018-06-15 | 四川大学 | Variable damping vibration isolator and railway roadbed vibrating isolation system |
| CN108644293A (en) * | 2018-06-01 | 2018-10-12 | 安徽知之信息科技有限公司 | A kind of new-energy automobile shock absorption buffering mechanism |
| CN110608257A (en) * | 2019-09-29 | 2019-12-24 | 郭怀宝 | Bottom valve flow increasing type automobile hydraulic shock absorber |
| CN116658564A (en) * | 2023-07-26 | 2023-08-29 | 山西新环精密制造股份有限公司 | Damping hydraulic cylinder |
-
2004
- 2004-09-09 CN CN 200420079304 patent/CN2723765Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861475B (en) * | 2008-10-02 | 2012-07-04 | 萱场工业株式会社 | Front fork |
| CN104265825A (en) * | 2014-06-24 | 2015-01-07 | 江苏明星减震器有限公司 | Rear shock absorber |
| CN104455164A (en) * | 2014-12-15 | 2015-03-25 | 重庆东安渠强机械制造有限公司 | Damping shock absorber for motorcycle |
| CN104455164B (en) * | 2014-12-15 | 2016-06-22 | 重庆东安渠强机械制造有限公司 | Motorcycle damping shock absorber |
| CN104500639A (en) * | 2014-12-22 | 2015-04-08 | 重庆市安太弹簧有限责任公司 | Elastic clamping positioner |
| CN105673767A (en) * | 2015-11-23 | 2016-06-15 | 成都九鼎科技(集团)有限公司 | Damper with automatic damping compensation function |
| CN105673767B (en) * | 2015-11-23 | 2018-06-22 | 成都九鼎科技(集团)有限公司 | A kind of automatic compensation damping shock absorber |
| CN108167375A (en) * | 2018-02-23 | 2018-06-15 | 四川大学 | Variable damping vibration isolator and railway roadbed vibrating isolation system |
| CN108644293A (en) * | 2018-06-01 | 2018-10-12 | 安徽知之信息科技有限公司 | A kind of new-energy automobile shock absorption buffering mechanism |
| CN110608257A (en) * | 2019-09-29 | 2019-12-24 | 郭怀宝 | Bottom valve flow increasing type automobile hydraulic shock absorber |
| CN116658564A (en) * | 2023-07-26 | 2023-08-29 | 山西新环精密制造股份有限公司 | Damping hydraulic cylinder |
| CN116658564B (en) * | 2023-07-26 | 2023-10-10 | 山西新环精密制造股份有限公司 | Damping hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |