CN2586644Y

CN2586644Y - Shock-absorbing device for bicycle

Info

Publication number: CN2586644Y
Application number: CN 02282954
Authority: CN
Inventors: 王友仁
Original assignee: Fu Luong Hi Tech Co Ltd
Current assignee: Fu Luong Hi Tech Co Ltd
Priority date: 2002-10-29
Filing date: 2002-10-29
Publication date: 2003-11-19
Anticipated expiration: 2012-10-29

Abstract

The utility model relates to a shock-absorbing device for a bicycle. The bicycle is provided with one seat pipe frame for pushing a cushion and one back wheel frame, wherein, one back wheel is pivoted at the back wheel frame; the shock-absorbing device is slantwise assembled between the seat pipe frame and the back wheel frame and comprises one dust-proof sleeve cylinder arranged on the front end of the back wheel frame, one piston rod which is coaxial with the dust-proof sleeve cylinder, a set of hydraulic cylinder which can be arranged in the dust-proof sleeve cylinder and pivoted on the seat pipe frame and one refluxing damping device assembled in the hydraulic cylinder, wherein, the backflow damping device comprises one flow guiding plate, a plurality of flow guiding grooves which are concavely arranged on the periphery of the flow guiding plate at intervals, one throttle piston seat which penetrates through the piston and is appressed with the flow guiding plate, one leakproof ring and one set of linings which can be arranged on the piston rod and be butted with the throttle piston seat, wherein, the throttle piston seat is provided with one convex ring which protrudes towards the flow guiding plate and at least one pore spaces concavely arranged on the periphery of the convex ring and the edge of the piston seat. The utility model can effectively absorb the vibration and can slowly reset, ensuring the comfort of riders.

Description

The Shock absorber of bicycle

[technical field]

The utility model relates to a kind of Shock absorber of bicycle.

[background technology]

Scheme as shown in Figures 1 and 2, be that a kind of Shock absorber in the past is assembled in the lateral plan on the bicycle, and the assembled sectional view of this Shock absorber, this bicycle 1 has the rear wheel frame 14 that the seat pipe support 12 and of shoring cushion 11 is articulated with a trailing wheel 13, this Shock absorber 2 is to assemble 14 of present pipe support 12 and rear wheel frames obliquely, so as to reaching shock-proof effect, it comprises a dustproof sleeve 21, an air cylinder 22, and a piston rod 23.The sleeve 21 that should prevent dust has the circular articulated section 211 of the present pipe support 12 of a pivot joint, and the leg 212 that 211 peripheries extend from the articulated section, this air cylinder 22 is to be set in the leg 212 formed channels, and protrusion 221 with an outstanding leg 212, this protrusion 221 is to be articulated in rear wheel frame 14 front ends, and this piston rod 23 has a binding end 231 that is installed on the articulated section 211, and one stretch to place and do moved end 232 in the air cylinder 22, being provided with one at dustproof sleeve 21 and 22 of air cylinders is installed in air cylinder 22 tops and is surrounded on the block ring 24 of leg 212 inboards, this block ring 24,211 of leg 212 and articulated sections can be organized to enclose and form one first air chamber 25, but and be provided with the stop ring 26 that an air feed cylinder pressure 22 plugs, this stop ring 26 at the open end of dustproof sleeve 21,212 of block ring 24 and legs can form one second air chamber 27.

When Shock absorber 2 starts, this air cylinder 22 produces relative motion with piston rod 23, and can order about in air cylinder 22 projections or the dustproof sleeve 21 of retraction, at this moment, this block ring 24 just can be in the leg 212 of dustproof sleeve 21 longitudinal travel, so as to changing these air chambers 25,27 volume, and reach the effect of buffering and shock preventing, therefore, this Shock absorber 2 still has the basic effect of the vibrations that produced when absorbing the bicycle walking, and still, this Shock absorber 2 just utilizes the media of gas as the conduction shock-absorbing, therefore when air cylinder 22 is given prominence to homing action, gas will cause similar phenomenon of dashing cruelly to take place soon through block ring 24, and then causes rider's discomfort, therefore, how effectively to improve above-mentioned disappearance, be dealer's urgent problem.

[utility model content]

The purpose of this utility model is to provide a kind of can effectively absorb vibration, and can slowly reset, to guarantee the Shock absorber of the bicycle that the rider is comfortable.

The utility model provides a kind of Shock absorber of bicycle, described bicycle has the rear wheel frame that the seat pipe support and of shoring cushion is articulated with a trailing wheel, this Shock absorber is to be assembled in obliquely between this pipe support and rear wheel frame, and comprise: a dustproof sleeve of being located at the front end of rear wheel frame, is set in the dustproof sleeve with the coaxial piston rod, of dustproof sleeve and articulates liquid gas pressure cylinder on the present pipe support, reach a backflow shock absorber that is assembled in the liquid gas pressure cylinder, it is characterized in that: this backflow shock absorber comprises:

One deflecting plate is located on the piston rod and compressed by piston rod, and has most and be arranged with in the flame diversion trough of deflecting plate periphery at interval;

One throttle piston seat is located on the piston rod and with deflecting plate and is close to, and it has the outstanding prominent ring of deflecting plate on one day, and at least one hole that is arranged with between prominent ring periphery and piston seat edge;

One seal ring is assembled between deflecting plate and throttle piston seat; And

One lining is set on the piston rod and butt throttle piston seat.

The Shock absorber of described bicycle, it is characterized in that: this liquid gas pressure cylinder has a tube wall, and is cemented in the oil seal seat on piston region top by the piston region, that tube wall surrounded, and one be positioned at piston region and the connection piston rod the valve piston, this valve piston is divided into a hydraulic pressure chamber and an air-pressure chamber with this piston region.

When normal condition, lining is shored the throttle piston seat.When Shock absorber bore external force, the liquid gas pressure cylinder is longitudinal travel in dustproof sleeve, at this moment, liquid can flow through deflecting plate via the hole of throttle piston seat, and after external force disappeared, liquid was adsorbed and slowly is back in the liquid gas pressure cylinder, and is slowly outstanding so as to ordering about the dustproof relatively sleeve of liquid gas pressure cylinder.

By above explanation as can be known, the utility model utilizes the characteristic of the flowing power of hydraulic oil than gas slowly, make Shock absorber 3 when making homing action, not having in the past, the outstanding fast phenomenon that resets of air pressure Shock absorber 2 takes place, and, Shock absorber 3 of the present utility model is when start, because of can producing an antagonistic force, the change of air-pressure chamber 337 pressure make the relative liquid gas pressure cylinders of piston rod 32 33 outstanding, at this moment, setting by this backflow shock absorber 5 just can make the hydraulic oil that flows into cushion space 510 slowly be back in the hydraulic pressure chamber 336, and has the advantage that buffering resets.

Conclude above-mentioned, the collocation of the integration of the setting of the Shock absorber utilization backflow shock absorber of the utility model bicycle and liquid, air pressure, the effect that makes Shock absorber can reach shock-absorbing and slowly reset, and make the bicycle that drives that the rider can be more comfortable.

[description of drawings]

Be elaborated below by most preferred embodiment and accompanying drawing Shock absorber to bicycle of the present utility model, in the accompanying drawing:

Fig. 1 is that a kind of Shock absorber in the past is assembled in the schematic side view on the bicycle;

Fig. 2 is this assembled sectional view of Shock absorber in the past, shows the normal condition of this Shock absorber when not being subjected to external force;

Fig. 3 is the schematic side view of the utility model Shock absorber one embodiment, shows that this Shock absorber is to be assembled between a pipe support and a rear wheel frame of bicycle;

Fig. 4 is the three-dimensional exploded view of this embodiment;

Fig. 5 is the assembled sectional view of this embodiment, shows the normal condition of this Shock absorber when not being subjected to external force;

Fig. 6 is the view of a similar Fig. 5, shows the actuator state of this Shock absorber when bearing external force;

Fig. 7 is the semi-sictional view enlarged drawing of Fig. 6; And

Fig. 8 is the view of a similar Fig. 7, shows the reflux state of this Shock absorber after external force disappears.

[specific embodiment]

As shown in Figures 3 and 4, the embodiment of Shock absorber 3 of the present utility model can be installed on the bicycle 4 equally so as to reaching shock-proof effect, and described bicycle 4 also has the seat pipe support 42 that a cushion 41, is shored cushion 41, an and rear wheel frame 43 that is pivoted with a trailing wheel, this Shock absorber 3 is to assemble 43 of present pipe support 42 and rear wheel frames obliquely, it comprises: a dustproof sleeve 31, a piston rod 32, a liquid gas pressure cylinder 33, and a backflow shock absorber 5.

As Fig. 4 and shown in Figure 5, should dustproof sleeve 31 be the front ends that are hubbed at rear wheel frame 43, and have an axis 311, and be articulated in the leg 313 that back ear 312 on the rear wheel frame 43, extends along back ear 312 peripheries, and one is organized with back ear 312 by leg 313 and to be enclosed the axle track 314 that forms.

This piston rod 32 is to be fixed in the ear 312 of back along axis 311, and has first start sections 321 of extending from back ear 312, the bar footpath second start section 322 little than the first start section 321 in regular turn downwards, and one directly changes formed shoulder 323 by bar.

This liquid gas pressure cylinder 33 is tightly to fill in axially in axle track 314, it has a preceding ear 331 that articulates on the present pipe support 42, one along the tube wall 332 of preceding ear 331 peripheries towards 314 extensions of dustproof sleeve 31 axle tracks, one encloses the piston region 333 that forms by tube wall 332 for 331 groups with preceding ear, the oil seal seat 334 that one cover is filled in tube wall 332 tops and worn movably for the first start section 321 of piston rod 32, and one be positioned at piston region 333 and be subjected to the valve piston 335 of piston rod 32 interlocks, and this valve piston 335 just can be divided into piston region 333 air-pressure chamber 337 that a hydraulic pressure chamber 336 and that is equipped with hydraulic oil is equipped with air.The outside wall surface of this tube wall 332 just with the mutual closed contact of the internal face of leg 313, on oil seal seat 334 and valve piston 335, be equipped with most the O shapes that contacts tube wall 332 internal faces respectively and encircle 338, to prevent the gas-liquid seepage.

In addition, the utility model is outstanding for piston rod 32 can slowly be resetted when the start, reach preferable shock-proof effect to order about the dustproof relatively sleeve 31 of liquid gas pressure cylinder 33 slowly to be given prominence to, therefore in the hydraulic pressure chamber 336 of liquid gas pressure cylinder 33, be assembled with this backflow shock absorber 5, it comprises: a deflecting plate 51, a throttle piston seat 52, are assembled in the seal ring 53 of 52 of deflecting plate 51 and throttle piston seats, and a lining 54.

This deflecting plate 51 is sheathed and be connected on the shoulder 323 of piston rod 32, and has a perforation 511 that wears for piston rod 32 second start sections 322, and most intervals are arranged with in the flame diversion trough 512 of deflecting plate 51 peripheries, on the piston rod 32 of 334 of deflecting plate 51 and oil seal seats, also be arranged with an O shape ring 338 that prevents the hydraulic oil flow warp, and deflecting plate 51,

tube wall

332 and 334 of oil seal seats can define a cushion space 510.

This throttle piston seat 52 is to be located on the second start section 322 of piston rod 32 and with deflecting plate 51 to be close to, its have a through hole that wears for second start section 322 of piston rod 32 521, along axis 311 towards deflecting plate 51 outstanding prominent ring 522, triangle projections 523 from bulge loop 522 periphery projections, reach one and be arranged with the hole 524 that encircles between 521 peripheries and piston seat 52 edges and can supply the hydraulic oil flow warp of hydraulic pressure chamber 336 in prominent, and above-mentioned seal ring 53 just can be subjected to triangle projection 523 to be set in this prominent ring 522 peripheries with supporting, and its cross-sectional plane be shaped as square.

But this lining 54 is to be set on the piston rod 32 and butt throttle piston seat 52 and valve piston 335, so as to stretching of control throttle piston seat 52.

As seen from Figure 5, after these Shock absorber 3 assemblings and when not being subjected to the normal condition of external force, the linings 54 that are set in the hydraulic pressure chamber 336 are valve pistons 335 of shoring throttle piston seat 52 and liquid gas pressure cylinder 33.As Figure 6 and Figure 7, when Shock absorber 3 when bearing external force, liquid gas pressure cylinder 33 is along axis 311 longitudinal travel in the axle track 314 of dustproof sleeve 31, make valve piston 335 compress air-pressure chamber 337 and absorb external strength, at this moment, deflecting plate 51 be subjected to compressing of piston rod 32 shoulders 323 and interlock throttle piston seat 52 away from the oil seal seat 334 of liquid gas pressure cylinder 33, make the volume of cushion space 510 become big and form an adsorption affinity, can flow through the flame diversion trough 512 of deflecting plate 51 via the hole 524 of throttle piston seat 52 to enter this cushion space 510 so as to the hydraulic oil that attracts hydraulic pressure chamber 336.

Cooperate shown in Figure 8, when the external force of bearing when Shock absorber 3 disappears, air-pressure chamber 337 just can produce an antagonistic force with pushing and pressing valve piston 335, throttle piston seat 52 is supported into towards oil seal seat 334, and the hydraulic oil that orders about in the cushion space 510 slowly is back to hydraulic pressure chamber 336 along flame diversion trough 512 through hole 524, it is slowly outstanding to order about the dustproof relatively sleeve 31 of liquid gas pressure cylinder 33, and reaches preferable shock-proof effect.

Claims

1, a kind of Shock absorber of bicycle, described bicycle has the rear wheel frame that the seat pipe support and of shoring cushion is articulated with a trailing wheel, this Shock absorber is to be assembled in obliquely between this pipe support and rear wheel frame, and comprise: a dustproof sleeve of being located at the front end of rear wheel frame, is set in the dustproof sleeve with the coaxial piston rod, of dustproof sleeve and articulates liquid gas pressure cylinder on the present pipe support, reach a backflow shock absorber that is assembled in the liquid gas pressure cylinder, it is characterized in that: this backflow shock absorber comprises:

One lining is set on the piston rod and butt throttle piston seat.

2, the Shock absorber of bicycle according to claim 1, it is characterized in that: this liquid gas pressure cylinder has a tube wall, and is cemented in the oil seal seat on piston region top by the piston region, that tube wall surrounded, and one be positioned at piston region and the connection piston rod the valve piston, this valve piston is divided into a hydraulic pressure chamber and an air-pressure chamber with this piston region.