CN2663282Y

CN2663282Y - Adjustable upended type front shock absorber

Info

Publication number: CN2663282Y
Application number: CN 200320114649
Authority: CN
Inventors: 张兴海; 李植; 邹静平
Original assignee: Chongqing Changan Shock Absorber Co ltd
Current assignee: Chongqing Yuan Innovation Technology Group Co Ltd
Priority date: 2003-11-14
Filing date: 2003-11-14
Publication date: 2004-12-15
Anticipated expiration: 2013-11-14

Abstract

The utility model relates to an adjustable upended type front shock absorber suitable for medium-and high-grade cross-country vehicles and racing vehicles. The utility model is characterized in that a restoring valve core 44 is arranged in a connecting body 42, a push rod 45 is sheathed in a connecting rod 47, one end of the push rod 45 is contacted with the restoring valve core 44, and the other end is supported by adjusting screws 57; a compressing valve core 28 is arranged in a bottom barrel 1, and a passage of the compressing valve core 28 is communicated with an inner cavity of a front fork pipe 4; one end of the connecting rod 47 is sheathed with a buffer 8, a guiding seat 9 and a supporting seat 12 which are locked by nuts 6, and the other end is sheathed with an end cover assembly 24. The utility model can freely adjust the pre-pressing force, the compressing damping force and the restoring damping force of a shock absorbing spring according to different road conditions and loads, and has the advantages of compact structure, simple and convenient operation and comfortable and safe driving and riding process and reduces the fatigue feeling of drivers and passengers driving and riding for a long time.

Description

Adjustable inversed front shock absorber

One, technical field:

The utility model relates to a kind of bumper, especially is applicable to the adjustable inversed front shock absorber of middle and high shelves cross-country car and racing car.

Two, background technology:

At present, the domestic front shock absorber of producing voluntarily that everybody was familiar with is mainly front set absorber, and front set absorber mainly is made up of parts such as end tube, front fork tube, piston tube, damping spring and oil sealings.When this bumper is installed front fork tube up, end tube is downward, front fork tube and the upper and lower connecting panel of car load direction post are connected, hydraulic oil is realized damping by the damping hole generation dumping force that is arranged on the piston tube.Under the different motion speed condition, the variation of damping hole is always steady state value, and with the variation of speed, resistance---speed is linear, and damping effect is relatively poor.In addition, the front fork tube of this bumper surface contacts with outer tube inner wall, and friction force is bigger during motion, if will reduce friction, just must improve the working accuracy of urceolus, and the urceolus hole is a deep hole, and difficulty of processing is big, and working accuracy also is difficult for guaranteeing.Because positively fixed type bumper mounting means limits, the bending strength of its breeches pipe a little less than, influence in-use performance because of distortion easily.In addition, the precompressed compression of recovery, compression damping power and the spring of the inversed front shock absorber of early stage domestic production is unadjustable, and in the vehicle driving process, the comfort level of driving is restricted under different road conditions.

Three, summary of the invention:

The purpose of this utility model provides a kind of adjustable inversed front shock absorber, by changing the structure of existing inversion type bumper, solve under different road conditions, the different loads situation problem that compression damping power, recovery damping force, damping spring precompressed compression value can not independent regulation.

Concrete scheme of the present utility model is: comprise end tube, clutch release slave cylinder, front fork tube, nut, cover of dust, cushion rubber, guide holder, flat gasket, damping spring, cushion blocking, urceolus, connecting rod, wherein, front fork tube one headgear is equipped with end tube, the other end is set with urceolus, be set with damping spring, cushion blocking, spacing pad on the connecting rod, one of damping spring contacts with supporting seat, the other end is spacing by the packing ring that is arranged on the connecting rod, it is characterized in that: the recovery spool is housed in the A. connector, top stem casing is contained in the connecting rod, one contact with the recovery spool, the other end is supported by set screw; B., the compression spool is housed in the end tube, and the passage of this compression spool communicates with the front fork tube inner chamber; C. connecting rod one end suit cushion rubber, guide holder, supporting seat, and by nut locking, the combination of other end suit end cap.

This scheme not only realizes damping spring precompressed compression regulatory function by increasing the end cap unitized construction, compression spool in end tube is realized compression damping power regulatory function, recovery spool in connector is realized the recovery damping force regulatory function, each regulatory function independent regulation in a big way, do not exert an influence mutually, not only make bumper under different road conditions, different loads situation, can both reach desirable damping effect, realize damping performance and car load matched well in sizable scope.

Adopt such scheme, can be according to different road conditions and load free adjustment damping spring precompressed compression, compression damping power and recovery damping force, its compact conformation, simple, convenient, comfortable, the safety of driving process has alleviated the long-time sense of fatigue of driving of driver and crew.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model, also is an embodiment of the present utility model:

Fig. 2 is a bottom valve combination local I enlarged drawing among Fig. 1;

Fig. 3 is a piston in combination local I I enlarged drawing among Fig. 1;

Fig. 4 is an end cap combination local I II enlarged drawing among Fig. 1.

Five, the specific embodiment:

Please see Figure 1, Fig. 2, Fig. 3, Fig. 4, the utility model is mainly by end tube 1, bottom valve combination 2, clutch release slave cylinder 3, front fork tube 4, piston in combination 5, nut 6, cover of dust 7, cushion rubber 8, guide holder 9, flat gasket 10,

DU lining

11 and 17, supporting seat 12, damping spring 13, cushion blocking 14, spacing pad 15, back-up ring 16, packing ring 18, bushing pipe 19, support sleeve 20, back-up ring 21, adjustment seat 22, urceolus 23, end cap combination 24, push rod 45, connecting rod 47 is formed, wherein, front fork tube 4 one headgears are equipped with end tube 1, the other end is set with urceolus 23, be set with damping spring 13 on the connecting rod 47, cushion blocking 14,

spacing pad

15,13 1 of damping springs contact with supporting seat 12, the other end is spacing by the packing ring 18 that is arranged on the connecting rod 47, it is characterized in that: be equipped with in the A. connector 42 and restore spool 44, push rod 45 is sleeved in the connecting rod 47, one contact with restoring spool 44, and the other end is supported by set screw 57; B., compression spool 28 is housed in the end tube 1, and the passage of this compression spool 28 communicates with front fork tube 4 inner chambers; C. connecting rod 47 1 end suit cushion rubbers 8, guide holder 9, supporting seat 12, and by nut 6 lockings, other end suit end cap combination 24.

It can also be seen that from Fig. 1: be provided with two

DU linings

11 and 17 between front fork tube 4 outer walls and urceolus 23 inwalls; DU lining 17 is by support sleeve 20 location, and DU lining 11 is by flat gasket 10 location that are arranged in the urceolus 23.

As can be seen from Figure 2: bottom valve combination 2 is made up of foot valve seat 29, lining ring 30, valve block combination 31, bottom valve body 32, valve block 33, reset tower spring 34 and nut 35, its annexation is: suit lining ring 30, valve block combination 31, bottom valve body 32, valve block 33 and the tower spring 34 that resets on the A. foot valve seat 29, by nut 35 lockings; B. on bottom valve body 32, be provided with oilhole.

As can be seen from Figure 3: piston in combination 5 is made up of nut 36, lining ring 37, valve block combination 38, piston body 39, valve block 40, the tower spring 41 that resets, connector 42, its annexation is: 42 1 of A. connectors pass piston body 39, valve block combination 38 and lining ring 37, by nut 36 lockings; B., the valve block 40 and the tower spring 41 that resets are housed between piston body 39 and connector 42, on connector 42, are provided with oilhole.It can also be seen that from Fig. 3: recovery spool 44 1 ends are tapered.

As can be seen from Figure 4: end cap combination 24 is made up of nut 46, plain cushion 48, adjusting shaft 49, flat key 50, universal driving shaft 51, end cap 52, pad 53, setting nut 54, steel ball 55, return spring 56, nut 58, its annexation is: A. adjusting shaft 49 passes end cap 52 and is threaded with setting nut 54, again by nut 46 lockings; Adjusting shaft 49 other end suit plain cushions 48 are again by nut 46 lockings.B. universal driving shaft 51 is threaded with end cap 52, between universal driving shaft 51 and the adjusting shaft 49 flat key 50 is housed.

It can also be seen that from Fig. 1 and Fig. 4: 21 pairs of adjustment seats 22 of back-up ring are spacing, and 52 pairs of universal driving shafts 51 of end cap are spacing, the screw-threaded coupling on nut 58 and setting nut 54 and the adjusting shaft 49.Bushing pipe 19 two ends contact with packing ring 18, adjustment seat 22 respectively, and adjustment seat 22 is by universal driving shaft 51 location, and spacing pad 15 is spacing by back-up ring 16.

From Fig. 2 and Fig. 4 as can be seen: compression spool 28, set screw 57 are spacing by back-up

ring

26,59 respectively; Compression spool 28 is provided with steel ball 25, return spring 27 with end tube 1 cooperation place, and set screw 57 is provided with steel ball 55, return spring 56 with adjusting shaft 49 cooperation places; Compression spool 28 1 ends are tapered.

The utility model is work like this: this utility model is installed on the car load, in clutch release slave cylinder 3, inject damping oil, bumper is in compression process, urceolus 23 under external force drivening rod 47 to the diagram left to motion, the damping oil pressure in piston in combination 5 left chambeies increases, damping oil is by foot valve seat 29 endoporus, flow through oil-through hole between end tube 1 and compression spool 28 conical sufaces produces compression damping power, simultaneously, damping spring 13 is compressed, realize cushioning effect, in compression process, the merit part that external force is done is converted to potential energy, another part is converted to the potential energy of damping spring, simultaneously, the damping oil in piston in combination 5 left chambeies is opened valve block 40 under the effect of pressure, the part damping oil flows to piston in combination 5 right chambeies, finishes the repairing of compression process.After compression process is finished, external force disappears, discharge potential energy at damping spring 13, in being returned to the process of original length, i.e. recuperation, connecting rod 47 stressed moving right, the damping oil in piston in combination 5 right chambeies, pressure increases, and damping oil is by the oil-through hole between connector 42 and the conical suface that restores 44 of spools, generation recovery damping force.Simultaneously, piston in combination 5 left chambeies form low-pressure cavity, and the damping oil on bottom valve body 32 left sides is opened valve block 33, enters piston in combination 5 left chambeies, finishes the repairing of recuperation.In whole motion process, support by

DU lining

11 and 17 between the outer wall of front fork tube 4 and urceolus 23 inwalls, do not have direct contact, reduced friction force between the two, improved the kinematic dexterity and the bending strength of bumper.

According to road conditions or load change, when needing to adjust compression damping power, only need to rotate interior six sides of compression spool 28, with regard to the compression damping power of scalable bumper with inner-hexagon spanner with product.If clickwise compression spool 28, compression spool 28 upward movements, the oil-through hole cross section between end tube 1 and compression spool 28 conical sufaces diminishes, and compression damping power increases; Simultaneously, in rotary course, by compression spool 28 drive that steel balls 25 rotations and shift slot collision on the end tube 1 produce " clickly " sound judges gear.If when the user need reduce compression damping power, will compress spool 28 left-hand revolutions, principle is identical when increasing with the adjusting compression damping, and direction is opposite; In addition, 28 position-limiting actions of back-up ring 26 pairs of compressions spool, compression spool 28 in use can not break away from body.

According to road conditions or load change, when the user need adjust recovery damping force, only need to rotate set screw 57, with regard to the recovery damping force of scalable bumper with inner-hexagon spanner.If clickwise set screw 57, set screw, promote push rod 45 to left movement to left movement, push rod 45 promotes to restore spool 44 to left movement, and connector 42 and the oil-through hole cross section of restoring between spool 44 conical sufaces diminish, and recovery damping force increases; Simultaneously, by set screw 57 drive that steel balls 55 rotations and shift slot collision on the adjusting shaft 49 produce " clickly " sound judges gear, if when the user need reduce recovery damping force, with set screw 57 left-hand revolutions, principle is identical when restoring the damping increase with adjusting, and direction is opposite; In addition, 57 position-limiting actions of 59 pairs of set screw of back-up ring, set screw 57 in use can not break away from body.

In addition, also can make up setting nut 54 rotations in 24, drive adjusting shaft 49 rotations, thereby drive the precompressed compression that damping spring 13 is regulated in universal driving shaft 51 side-to-side movements by flat key 50 by end cap.If clickwise setting nut 54, adjusting shaft 49 is clickwise thereupon also, flat key 50 drives universal driving shaft 51 clickwises, when the negative thread of universal driving shaft 51 on end cap 52 rotates simultaneously, to left movement, thereby drive adjustment seat 22, bushing pipe 19, packing ring 18 simultaneously to left movement, further compression shock absorption spring 13, the precompressed compression of increase damping spring 13; If in the time of must reducing the precompressed compression of damping spring 13, with setting nut 54 left-hand revolutions, principle is identical when increasing with the adjusting precompressed compression, and direction is opposite; 22 position-limiting actions left of 21 pairs of adjustment seats of back-up ring, 51 position-limiting actions to the right of 52 pairs of universal driving shafts of end cap, screw-threaded coupling on nut 58 and setting nut 54 and the adjusting shaft 49, guarantee that the three rotates simultaneously, and guarantee that each adjusting part can not break away from body, realizes that the precompressed compression of damping spring is regulated within the specific limits.

Claims

1, a kind of adjustable inversed front shock absorber, comprise end tube (1), clutch release slave cylinder (3), front fork tube (4), nut (6), cover of dust (7), cushion rubber (8), guide holder (9), flat gasket (10), damping spring (13), cushion blocking (14), urceolus (23), connecting rod (47), wherein, front fork tube (4) one headgears are equipped with end tube (1), the other end is set with urceolus (23), be set with damping spring (13) on the connecting rod (47), cushion blocking (14), spacing pad (15), (13) one of damping springs contact with supporting seat (12), the other end is spacing by the packing ring (18) that is arranged on the connecting rod (47), it is characterized in that: be equipped with in the A. connector (42) and restore spool (44), push rod (45) is sleeved in the connecting rod (47), one contacts with restoring spool (44), and the other end is supported by set screw (57); B., compression spool (28) is housed in the end tube (1), and the passage of this compression spool (28) communicates with front fork tube (4) inner chamber; C. connecting rod (47) one end suit cushion rubbers (8), guide holder (9), supporting seat (12), and by nut (6) locking, other end suit end cap combination (24).

2, adjustable inversed front shock absorber according to claim 1, it is characterized in that: bottom valve combination (2) is made up of foot valve seat (29), lining ring (30), valve block combination (31), bottom valve body (32), valve block (33), reset tower spring (34) and nut (35), wherein: A. foot valve seat (29) is gone up suit lining ring (30), valve block combination (31), bottom valve body (32), valve block (33) and the tower spring (34) that resets, and is locked by nut (35); B. on bottom valve body (32), be provided with oilhole.

3, adjustable inversed front shock absorber according to claim 1, it is characterized in that: piston in combination (5) is made up of nut (36), lining ring (37), valve block combination (38), piston body (39), the tower spring (41) that resets, connector (42), wherein: (42) one of A. connectors pass piston body (39), valve block (40), valve block combination (38) and lining ring (37), are locked by nut (36); B., the valve block (40) and the tower spring (41) that resets are housed between piston body (39) and connector (42), on connector (42), are provided with oilhole.

4, adjustable inversed front shock absorber according to claim 1, it is characterized in that: end cap combination (24) is made up of nut (46), plain cushion (48), adjusting shaft (49), flat key (50), universal driving shaft (51), end cap (52), pad (53), setting nut (54), steel ball (55), return spring (56), nut (58), wherein: A. adjusting shaft (49) passes end cap (52) and is threaded with setting nut (54), is locked by nut (58) again; Adjusting shaft (49) other end suit plain cushion (48) is locked by nut (46) again.B. universal driving shaft (51) is threaded with end cap (52), between universal driving shaft (51) and the adjusting shaft (49) flat key (50) is housed.

5, adjustable inversed front shock absorber according to claim 1 is characterized in that: compression spool (28), set screw (57) are spacing by back-up ring (26), (59) respectively.

6, adjustable inversed front shock absorber according to claim 1 is characterized in that: back-up ring (21) is spacing to adjustment seat (22), and end cap (52) is spacing to universal driving shaft (51), the screw-threaded coupling on nut (58) and setting nut (54) and the adjusting shaft (49).

7, adjustable according to claim 1 or 5 inversed front shock absorber, it is characterized in that: compression spool (28) is provided with steel ball (25), return spring (27) with end tube (1) cooperation place, and set screw (57) is provided with steel ball (55), return spring (56) with adjusting shaft (49) cooperation place.

8, adjustable according to claim 1 or 5 inversed front shock absorber is characterized in that: recovery spool (44) one ends are tapered.

9, adjustable according to claim 1 or 5 inversed front shock absorber is characterized in that: compression spool (28) one ends are tapered.

10, adjustable inversed front shock absorber according to claim 1 is characterized in that: bushing pipe (19) two ends contact with packing ring (18), adjustment seat (22) respectively, and adjustment seat (22) is by universal driving shaft (51) location, and spacing pad (15) is spacing by back-up ring (16).

11, adjustable inversed front shock absorber according to claim 1 is characterized in that: be provided with two DU linings (11,17) between front fork tube (4) outer wall and urceolus (23) inwall.

12, according to claim 1 or 11 described adjustable inversed front shock absorbers, it is characterized in that: DU lining (17) is by support sleeve (20) location, and DU lining (11) is by flat gasket (10) location that is arranged in the urceolus (23).