CN1727249A

CN1727249A - Inversion type front buffer gear in motorcycle

Info

Publication number: CN1727249A
Application number: CN 200510057187
Authority: CN
Inventors: 张兴海; 李植; 彭青松
Original assignee: YUAN INNOVATION TECH Co Ltd
Current assignee: Chongqing Yuan Innovation Technology Group Co Ltd
Priority date: 2005-07-25
Filing date: 2005-07-25
Publication date: 2006-02-01
Anticipated expiration: 2025-07-25
Also published as: CN100372727C

Abstract

A reversely arranged front vibration-damping unit of motorcycle is composed of the first vibration damper using spring as its vibration mechanism and the second vibration damper with an internal damper consisting of piston, connecting rod and cylinder. Each vibration damper comprises bottom barrel, end cover, fork pipe and external barrel. Its advantages are simple structure and light weight.

Description

A kind of inversion type front buffer gear in motorcycle

Technical field

The present invention relates to vehicle shock-absorbing device, especially a kind of inversion type front buffer gear in motorcycle.

Background technology

As everybody knows, inversion type front buffer gear in motorcycle is the suspension of motorcycle driving system, and it plays the supporting vehicle body, and transmitting tractive power is closely bound up with the safety of vehicle '; Simultaneously it is again the performance part, and the quality of damping effect also can exert an influence to driver and crew's comfort.Existing inversion type front buffer gear in motorcycle mostly adopts left and right sides double damper structure, about the structure of two bumpers identical.

Front damping device is divided into positively fixed type shock absorption device and inversion type shock absorption device again by the installation direction of breeches pipe, a kind of structure of inversion type front buffer gear is provided in the Chinese invention patent of notification number for CN2621963Y, mainly form by piston rod combination, clutch release slave cylinder, bottom valve body, damping spring, breeches pipe, registration arm, urceolus and end tube etc., the piston rod combination is assemblied in the bottom valve body and forms built-in damper in the clutch release slave cylinder, damping spring is positioned at breeches pipe, damping oil is equipped with in two ends in the clutch release slave cylinder between end tube and registration arm.Piston rod is combined in the clutch release slave cylinder and moves up and down during the motor bike operation, and urceolus is also with respect to the breeches pipe up-and-down movement, by the effect realization damping shock absorption of built-in damper and damping spring simultaneously.Its weak point is: when motor bike on rough road during high-speed cruising, the speed that connecting rod drive piston moves in clutch release slave cylinder is also high, when piston goes downwards to nadir and resets fast in clutch release slave cylinder, the damping oil that has flowed out in the clutch release slave cylinder can have little time to reflux clutch release slave cylinder, the damping vacuum phenomenon will appear when piston is descending once more, make built-in damper moment lose dumping force, influence the motor bike ride comfort.In addition since about damping spring and damping oil are all arranged in two bumpers, very heavy, wherein the front-wheel brake gear also will be installed in the lower end of a bumper, thereby has influenced the weight distribution of car load.

Summary of the invention

The purpose of this invention is to provide a kind of inversion type front buffer gear in motorcycle, simplify, make two bumper cooperation work, can eliminate the damping vacuum, and expendable weight, help the weight distribution of car load by the structure of two bumpers being carried out the best.

Inversion type front buffer gear in motorcycle of the present invention comprises first bumper and second bumper, every bumper all has end tube, end cap, breeches pipe and urceolus, one end of breeches pipe is fixed on the end tube, one end of urceolus is fixed on the end cap, urceolus and breeches pipe connect together has damping in the damping inner chamber that forms, and wherein the damping in the damping inner chamber of first bumper is a damping spring; Damping in the damping inner chamber of second bumper is the built-in damper that includes piston body, connecting rod and clutch release slave cylinder, is filled with 2～5 atmospheric gas mediums in the damping inner chamber, is marked with anti-shock fluid in the clutch release slave cylinder.

In above-mentioned first bumper, damping spring one end leans on positioning seat, the other end is spacing by liner clamp, positioning seat is fixed on end tube inner bottom part, liner clamp is fixed on an end of connecting rod, and the other end of connecting rod is connected on the end cap, and the end of breeches pipe is provided with spacing pad, between spacing pad and the liner clamp cushion rubber is arranged, be provided with piston ring between liner clamp and breeches pipe inwall.

In above-mentioned second bumper, have on the end cap and add pore, be provided with the inner that the sealant head will add pore in the end cap and block, be provided with support spring in the spring cavity that forms between sealant head and the piston rod combination end, end cap is provided with radially that gas port makes above-mentioned spring cavity communicate with the damping inner chamber.

Above-mentioned first bumper is left bumper, and second bumper is right left bumper.

In two bumpers of the present invention, wherein the damping in bumper damping inner chamber is a damping spring, promptly compare with the motor bike inversed front shock absorber that provides in the Chinese invention patent of publication number for CN2621963Y, saved the built-in damper that constitutes by piston body, connecting rod, clutch release slave cylinder and bottom valve body, during with another root bumper cooperating, mainly play a part to reset.Damping in another root bumper damping inner chamber is by piston body, connecting rod, the built-in damper that clutch release slave cylinder and bottom valve body constitute, promptly compare with the motor bike inversed front shock absorber that provides in the Chinese invention patent of publication number for CN2621963Y, saved damping spring, and in the damping inner chamber, charge into 2～5 atmospheric gas mediums, when motor bike on rough road during high-speed cruising, the speed that connecting rod drive piston moves in clutch release slave cylinder is also high, when piston goes downwards to nadir and resets fast in clutch release slave cylinder, flowed out damping oil in the clutch release slave cylinder clutch release slave cylinder that can under the compressing of high-pressure gas medium, reflux rapidly, avoid occurring the moment vacuum in the clutch release slave cylinder, thereby avoid the generation of damping vacuum phenomenon.Because the structure of two bumpers is all simplified, and has saved some parts, weight alleviates greatly, thereby helps the distribution of complete vehicle weight.

Remarkable result of the present invention is: the structure of two bumpers is all simplified greatly, and has carried out optimization of matching, and the work of two bumper cooperation can be eliminated the damping vacuum, and expendable weight, helps the weight distribution of car load.

Description of drawings

Fig. 1 is the structural representation of first bumper among the present invention;

Fig. 2 is the structural representation of second bumper among the present invention;

Fig. 3 is the X partial enlarged drawing of Fig. 1;

Fig. 4 is the Y partial enlarged drawing of Fig. 2;

Fig. 5 is the Z partial enlarged drawing of Fig. 2;

Fig. 6 is the W partial enlarged drawing of Fig. 2.

Among the figure: end cylinder 1 end cap 2 breeches pipes 3 urceolus 4 damping inner chambers 5 damping springs 6 working cylinders 7 bottom valve bodies 8 valve opening 8a positioning seats 9 liner clamps 10 connecting rods 11 spacing pad 12 cushion pads 13 piston rings 14 add pore 15 fluid sealant heads 16 piston bodies 17 valve opening 17a spring cavitys 18 support springs 19 radial guiding pores 20 screws 21 pad 22 nuts, 23 circlip for hole 24 screws, 25 slotted eye 26 connecting rods, 27 upper chamber 28 times chambers, 29 buffer springs, 30 valve blocks, 31 spring leafs, 32 valve blocks, 33 spring leafs, 34 damping holes, 35 O shapes and enclose 36 nuts 37

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:

As shown in Figure 1 and Figure 2, the present invention is made up of first bumper and second bumper, every bumper all has end tube 1, end cap 2, breeches pipe 3 and urceolus 4, one end of breeches pipe 3 is fixed on the end tube 1, one end of urceolus 4 is fixed on the end cap 2, urceolus 4 and the breeches pipe 3 damping inner chamber that forms that connects together has damping for 5 li, and wherein the damping of 5 li of the first bumper damping inner chambers is a damping spring 6; The damping that the second bumper damping inner chamber is 5 li is to constitute built-in damper by piston body 17, connecting rod 27, clutch release slave cylinder 7 and bottom valve body 8, clutch release slave cylinder is marked with anti-shock fluid for 7 li, the second bumper damping inner chamber is filled with 2～5 atmospheric gas mediums for 5 li, promptly compare with the motor bike inversed front shock absorber that provides in the Chinese invention patent of publication number for CN2621963Y, do not have built-in damper in first bumper, do not have damping spring in second bumper.

In Fig. 1, first bumper shown in Figure 3, damping spring 6 one ends lean on positioning seat 9, the other end is spacing by liner clamp 10, positioning seat 9 is fixed on end tube 1 inner bottom part by screw 21, liner clamp 10 is fixed on an end of connecting rod 11 by two pads 22 and nut 23, the other end thread connection of connecting rod 11 is on end cap 2, the end of breeches pipe 3 is provided with spacing pad 12, between spacing pad 12 and the liner clamp 10 cushion rubber 13 is arranged, work the buffer action that resets, the outside of spacing pad 12 is spacing by circlip for bore 24, is provided with piston ring 14 between liner clamp 10 and breeches pipe 3 inwalls.The damping inner chamber of first bumper is added with a spot of damping oil for 5 li, plays lubricated breeches pipe 3 inwalls.

In Fig. 2, second bumper shown in Figure 4, have on the end cap 2 and add pore 15, being provided with the inner that sealant head 16 will add pore 15 in the end cap 2 blocks, the outer end is by O shape circle 36 and screw 25 sealings, the spring cavity that forms between sealant head 16 and connecting rod 27 ends is provided with support spring 19 for 18 li, end cap 2 is provided with radially, and gas port 20 makes above-mentioned spring cavity 18 communicate with damping inner chamber 5, add air tube and outside end cap 2, axially prick sealant head 16, just can charge into high-pressure gas medium for 5 li to the damping inner chamber by adding pore 15.

At Fig. 2, in the Fig. 5 and second bumper shown in Figure 6, the threaded one end of connecting rod 27 is connected on the end cap 2, the other end stretches in the clutch release slave cylinder 7, and link by nut 37 and piston body 17, piston body 17 is separated into clutch release slave cylinder 7,

lower chambers

28 and 29, upper chamber is provided with buffer spring 30 for 28 li, the upper end of valve opening 17a is equipped with valve block 31 and spring leaf 32 on the piston body 17, the upper end of valve opening 8a is equipped with valve block 33 and spring leaf 34 on the bottom valve body 8, two valve blocks 31, all have damping hole 35 on 33, the sidewall of clutch release slave cylinder 7 is provided with slotted eye 26 makes the valve opening 8a on the bottom valve body 8 communicate with damping inner chamber 5.The aperture of valve opening 17a is greater than the aperture of damping hole 35 on the valve block 31 on the piston body 17, and the aperture of valve opening 8a is greater than the aperture of damping hole 35 on the valve block 33 on the bottom valve body 8.

The upper and lower end of first bumper and first bumper was in linkage status after the present invention was installed on the motor bike.First bumper is left bumper, and second bumper is right bumper, also can allow second bumper be left bumper, and first bumper is right bumper.

In first bumper, damping spring 6 mainly plays a part to reset except that playing the bumper and absorbing shock effect, 13 buffer actions of the cushion rubber between spacing pad 12 and the liner clamp 10.

In second bumper, when connecting rod 27 drive piston bodies 17 are descending in clutch release slave cylinder 7, the anti-shock fluid that piston body 17 compression lower chambers are 29 li, the pressure of anti-shock fluid is opened the valve block 31 at piston body 17 places, and the valve block 33 at bottom valve body 8 places is closed, because the valve opening 17a on the piston body 17 is greater than the damping hole on the valve block 31 35, valve opening 8a on the bottom valve body 8 is greater than the damping hole on the valve block 33 35, therefore when the anti-shock fluid of lower chambers 29 flows into upper chamber 28 fast by the valve opening 17a on the piston body 17 through the damping hole 35 on the valve block 33, slotted eye 26 on valve opening 8a on the bottom valve body 8 and clutch release slave cylinder 7 sidewalls slowly flows to damping inner chamber 5, promptly forms compression damping power at bottom valve body 8 places; When piston body 6 resets when up, opposite with said process, form recovery damping force at piston body 17 places, thereby reach the effect of damping shock absorption.

When motor bike is run at high speed on rough road, connecting rod 27 drives piston body 17 quick travel in clutch release slave cylinder 7, because the pressure effect of 5 li high-pressure gas mediums of damping inner chamber, when piston body 17 resets in clutch release slave cylinder 7 when up fast, the anti-shock fluid that flows out clutch release slave cylinder 7 can reflux under the pressure effect of gas medium in the clutch release slave cylinder 7 fast, moment damping vacuum occurs in the clutch release slave cylinder 7 in the time of can avoiding piston body 17 descending once more and lose dumping force, thereby improve damping performance, improve ride comfort.

Claims

1, a kind of inversion type front buffer gear in motorcycle, comprise first bumper and second bumper, every bumper all has end tube (1), end cap (2), breeches pipe (3) and urceolus (4), one end of breeches pipe (3) is fixed on the end tube (1), one end of urceolus (4) is fixed on the end cap (2), there is damping urceolus (4) and breeches pipe (3) damping inner chamber (5) lining that forms that connects together, it is characterized in that:

The damping of damping inner chamber (5) lining of A, first bumper is damping spring (6);

The damping of damping inner chamber (5) lining of B, second bumper is the built-in damper that includes piston body (17), connecting rod (27) and clutch release slave cylinder (7), damping inner chamber (5) lining is filled with 2～5 atmospheric gas mediums, and clutch release slave cylinder (7) lining is marked with anti-shock fluid.

2, a kind of inversion type front buffer gear in motorcycle according to claim 1, it is characterized in that: in described first bumper, damping spring (6) one ends lean on positioning seat (9), the other end is spacing by liner clamp (10), positioning seat (9) is fixed on end tube (1) inner bottom part, liner clamp (10) is fixed on an end of connecting rod (11), the other end of connecting rod (11) is connected on the end cap (2), the end of breeches pipe (3) is provided with spacing pad (12), between spacing pad (12) and the liner clamp (10) cushion rubber (13) is arranged, be provided with piston ring (14) between liner clamp (10) and breeches pipe (3) inwall.

3, a kind of inversion type front buffer gear in motorcycle according to claim 1, it is characterized in that: in described second bumper, have on the end cap (2) and add pore (15), being provided with the inner that sealant head (16) will add pore (15) in the end cap (2) blocks, spring cavity (18) lining that forms between sealant head (16) and connecting rod (27) end is provided with support spring (19), and end cap (2) is provided with radially that gas port (20) makes above-mentioned spring cavity (18) communicate with damping inner chamber (5).

4, a kind of inversion type front buffer gear in motorcycle according to claim 1 is characterized in that: be marked with anti-shock fluid in the damping inner chamber (5) of described first bumper.

5, a kind of inversion type front buffer gear in motorcycle according to claim 1, it is characterized in that: the built-in damper of described second bumper damping inner chamber (5) lining is by piston body (17), connecting rod (27), clutch release slave cylinder (7) and bottom valve body (8) constitute, one end of connecting rod (27) is connected on the end cap (2), the other end stretches in the clutch release slave cylinder (7) and links with piston body (17), piston body (17) is separated into clutch release slave cylinder (7), lower chambers (28,29), upper chamber (28) lining is provided with buffer spring (30), the upper end that piston body (17) is gone up valve opening (17a) is equipped with valve block (31) and spring leaf (32), the upper end that bottom valve body (8) is gone up valve opening (8a) is equipped with valve block (33) and spring leaf (34), two valve blocks (31,33) all have damping hole (35) on, the sidewall of clutch release slave cylinder (7) is provided with slotted eye (26) makes the valve opening (8a) on the bottom valve body (8) communicate with damping inner chamber (5).

6, a kind of inversion type front buffer gear in motorcycle according to claim 5, it is characterized in that: the aperture of the aperture of valve opening (8a) greater than the last damping hole (35) of valve block (33) gone up in the aperture that damping hole (35) is gone up greater than valve block (31) in the aperture of the last valve opening (17a) of described piston body (17), bottom valve body (8).

7, according to each described a kind of inversion type front buffer gear in motorcycle in the claim 1 to 6, it is characterized in that: described first bumper is left bumper, and second bumper is right left bumper.