Positive three-adjustable front shock absorber

Abstract

The utility model discloses an upright three-adjustable front shock absorber which is suitable for bestriding motorcycles. The device comprises a base, a gas cylinder, a working barrel, a multi-stage inner pipe, a telescopic pipe, a piston assembly, a spring assembly and a three-way adjusting mechanism (spring preloading, compression damping and springback damping). The spring preload adjusting mechanism adjusts the compression amount of a spring through an inner hexagonal driving rotary shaft and a driving ring; and the compression / rebound damping adjusting mechanism drives the valve rod and the valve plug through the knob to adjust the flow resistance of the damping liquid. And each mechanism is independently adjustable, so that the requirements of different road conditions can be met, and the driving comfort is improved. The device is compact in structure, convenient to adjust and suitable for bestriding motorcycles such as street motorcycles and cruise taizi motorcycles.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste paper cleaning structure on drum type die cutting machine, concretely relates to a normal three adjustable front shock absorber. BACKGROUND

[0002] The straddle type motorcycle (such as street car, cruise prince car) is big in the outer diameter of tire, and the compression stroke of front shock absorber is big when driving on the bumpy road. The spring stiffness, compression damping and rebound damping parameters of the existing front shock absorber are fixedly set by the manufacturer, and cannot be adjusted in real time according to the road conditions (such as flat road, potholed road, speed reduction belt group etc.) of the city where the driver is, leading to significant difference in damping effect under different road conditions, and seriously affecting the driving comfort.

[0003] Therefore, a front shock absorber capable of dynamically adjusting key parameters is urgently needed. SUMMARY

[0004] To solve the above problems, the utility model aims at providing a normal three adjustable front shock absorber, which is adjusted in three directions of spring preloading, compression damping and rebound damping, to adapt to different road conditions and improve the driving comfort of motorcycle.

[0005] To achieve the above object, the utility model provides the following technical scheme: a normal three adjustable front shock absorber, which comprises a base, a gas cylinder, a working cylinder, a first inner tube and a second inner tube connected to the base, and a telescopic tube, the telescopic tube is arranged between the second inner tube and the working cylinder, the working cylinder is provided with the first inner tube and the second inner tube, a piston is arranged in the first inner tube and slides along the first inner tube, a piston rod is connected to the piston, a first plug is arranged between the port of the first inner tube, the port of the second inner tube and the inner wall of the telescopic tube, a second plug is arranged at the opening of the working cylinder, the first plug and the second plug are annular, a reflux channel is arranged between the first inner tube and the second inner tube, a through hole leading to the reflux channel is formed in the circumferential wall of the first inner tube close to the first plug, the telescopic tube passes through the middle hole of the second plug, the piston rod passes through the middle hole of the first plug, a movable spring seat is sleeved on the piston rod, a spring is arranged between the spring seat and the second plug, the piston is reset by the elastic force of the spring, so that the piston pushes the shock-absorbing liquid to flow back to the gas cylinder cavity, and the end of the telescopic tube is connected with a spring preloading adjusting mechanism, the spring preloading adjusting mechanism can drive the spring seat to adjust in the axial square of the piston rod.

[0006] The gas cylinder is installed on the base and is provided with a first channel and a second channel in communication with the gas cylinder, the first channel is communicated with the reflux channel in the working cylinder, the second channel is communicated with the first inner tube in the working cylinder, a compression damping adjusting mechanism is connected in the second channel, and the rebound damping adjusting mechanism is arranged in the first channel.

[0007] The spring preloading adjusting mechanism comprises a mounting ring fixed to the inner end of the telescopic pipe, an axial guide groove is arranged on the inner wall of the mounting ring, a driving ring is arranged on the axial guide groove and slides along the axial guide groove, a rotating shaft is rotatably arranged in the mounting ring, one end of the rotating shaft extends out of the mounting ring and is provided with a rotating cap on the end face, the other end of the rotating shaft is in threaded transmission connection with the driving ring, and a spring seat is in contact with the driving ring under the elastic force of the spring.

[0008] The compression damping adjusting mechanism and the rebound damping adjusting mechanism are identical in structure and respectively comprise a valve body, a valve plug, a valve rod and a valve cover, the valve body is sealingly arranged in the corresponding mounting groove of the base, the valve cover is screwed on the outer port of the valve body, a valve port is arranged in the valve body and communicates with the first or second channel, the valve port is guided by a guide groove in the valve body, the valve plug is arranged in the guide groove and is telescopically movable in the guide groove towards the valve port, the valve plug comprises a blocking surface, an insertion rod is arranged on the blocking surface and can be inserted into the valve port, a through groove is arranged on the peripheral wall of the insertion rod and is used for passing the damping liquid through the valve rod, the valve rod is sealingly and rotatably arranged in the inner cavity of the valve body, one end of the valve rod is in threaded transmission connection with the valve plug, and the other end of the valve rod extends out of the valve cover and is provided with a knob, so that the compression damping adjusting mechanism and the rebound damping adjusting mechanism are greatly facilitated in adjustment.

[0009] The utility model discloses the three -dimensional independent adjustment of spring preloading adjusting mechanism, compression damping adjusting mechanism and rebound damping adjusting mechanism (knob drive), can dynamically adjust spring stiffness, damping liquid flow resistance and rebound speed according to actual road condition, effectively promotes the driving comfort under different road conditions, compact structure, and the adjustment operation is convenient, is applicable to the front damping scene of straddle type motorcycle.

[0010] The utility model will be further described below in combination with the drawings and specific embodiments. DRAWINGS

[0011] Figure 1 It is the perspective view of the specific embodiment of the utility model;

[0012] Figure 2 It is the partial sectional view of the specific embodiment of the utility model;

[0013] Figure 3 It is Figure 2 It is the enlarged view of C-C;

[0014] Figure 4 It is Figure 2 It is the enlarged view of A;

[0015] Figure 5 It is Figure 2 It is the enlarged view of B.

[0016] BRIEF DESCRIPTION OF DRAWINGS 1-base; 2-gas cylinder; 3-working cylinder; 4-first inner tube; 5-second inner tube; 6-telescopic tube; 7-piston; 8-piston rod; 9-first sealing plug; 10-second sealing plug; 11-backflow channel; 12-passing hole; 13-spring seat; 14-spring; 15-mounting ring; 16-axial guide groove; 17-driving ring; 18-rotary shaft; 19-rotary cap; 20-valve body; 21-valve plug; 22-valve stem; 23-valve cover; 24-valve port; 25-guide groove; 26-inserting rod; 28-knob; 29-first channel; 30-second channel; 40-spring preloading adjustment mechanism; 50-compression damping adjustment mechanism; 60-rebound damping adjustment mechanism. DETAILED DESCRIPTION

[0017] The utility model will be described in detail below through examples, which are only used for further illustrating the utility model and cannot be understood as limiting the protection scope of the utility model.

[0018] As shown in Figure 1 , Figure 2 , Figure 4 The embodiment discloses a normal three-adjustable front shock absorber, which comprises a base 1 and a gas cylinder 2. The base 1 is connected with a working cylinder 3, a first inner tube 4 and a second inner tube 5. The telescopic tube 6 is arranged between the second inner tube 5 and the working cylinder 3. The working cylinder 3 is provided with the first inner tube 4 and the second inner tube 5. The piston 7 is arranged in the first inner tube 4 and can slide along the first inner tube 4. The piston 7 is connected with the piston rod 8. The first sealing plug 9 is arranged between the port of the first inner tube 4, the port of the second inner tube 5 and the inner wall of the telescopic tube 6. The second sealing plug 10 is arranged at the opening of the working cylinder 3. The backflow channel 11 is arranged between the first inner tube 4 and the second inner tube 5. The passing hole 12 is arranged on the peripheral wall of the first inner tube 4 and leads to the backflow channel 11. The telescopic tube 6 passes through the middle hole of the second sealing plug 10. The piston rod 8 passes through the middle hole of the first sealing plug 9. The movable spring seat 13 is arranged on the piston rod 8. The spring 14 is arranged between the spring seat 13 and the second sealing plug 10. The piston 7 is reset by the elastic force of the spring 14, so that the piston 7 pushes the shock-absorbing liquid back to the cavity of the gas cylinder 2. The end of the telescopic tube 6 is connected with the spring preloading adjustment mechanism 40. The spring preloading adjustment mechanism 40 can drive the spring seat 13 to adjust the square telescopic adjustment along the axial direction of the piston rod 8.

[0019] The first channel 29 and the second channel 30 are arranged on the base 1 and are connected with the gas cylinder 2. The first channel 29 is communicated with the backflow channel 11 in the working cylinder 3. The second channel 30 is communicated with the first inner tube 4 in the working cylinder 3. The compression damping adjustment mechanism is connected in the second channel 30. The rebound damping adjustment mechanism 60 is arranged in the first channel 29.

[0020] As shown in the specific Figure 5 , the spring pre-load adjustment mechanism 40 includes a mounting ring 15 fixed to the inner port of the telescopic tube 6, the inner wall of the mounting ring 15 is provided with an axial guide groove 16, the axial guide groove 16 is provided with a driving ring 17 sliding along it, a rotating shaft 18 is further installed in the inner of the mounting ring 15, one end of the rotating shaft 18 extends out of the mounting ring 15 and is provided with a rotating cap 19 on the end face, the other end of the rotating shaft 18 is threadedly connected with the driving ring 17, and the spring seat 13 of the spring 14 is in contact with the driving ring 17 under the elastic force of the spring 14. The rotating shaft 18 is rotated by a hexagonal wrench, the telescopic extension of the spring seat 13 is driven by the driving ring 17, so as to adjust the compression amount of the spring 14 and realize the adjustment of the spring pre-load.

[0021] As shown in the specific Figure 3 , the compression damping adjustment mechanism 50 and the rebound damping adjustment mechanism 60 are the same in structure, and respectively include a valve body 20, a valve plug 21, a valve rod 22 and a valve cover 23. The valve body 20 is sealingly installed in the corresponding mounting groove of the base 1, the valve cover 23 is screwed on the outer port of the valve body 20, the valve body 20 is provided with a valve port 24 communicating with the first channel 29 or the second channel 30, the valve port 24 is guided to a guide groove 25 in the valve body 20, the valve plug 21 is installed in the guide groove 25, the valve plug 21 is telescopically movable in the guide groove 25 towards the valve port 24, the valve plug 21 includes a blocking surface, the blocking surface is provided with an insertion rod 26 which can be inserted into the valve port 24, the insertion rod 26 is provided with a through groove in the peripheral wall for the damping liquid to pass through the valve rod 22, the valve rod 22 is sealingly and rotatably installed in the inner cavity of the valve body 20, one end of the valve rod 22 is threadedly connected with the valve plug 21, the other end of the valve rod 22 extends out of the valve cover 23 and is provided with a rotating knob 28, so as to greatly facilitate the adjustment of the compression damping adjustment mechanism 50 and the rebound damping adjustment mechanism 60.

[0022] When the motorcycle runs on a flat road, the rotating shaft 18 is rotated clockwise by a hexagonal wrench, the spring seat 13 is pushed by the driving ring 17 to compress the spring 14 (to increase the spring pre-load), and at the same time, the valve rod 22 of the compression damping adjustment mechanism is rotated clockwise by the rotating knob 28 (to reduce the gap between the valve plug 21 and the valve port 24, and to increase the compression damping), so that the shock absorber remains stable when small amplitude vibration occurs; if running on a bumpy road, the rotating shaft 18 is counterclockwise rotated (to reduce the spring pre-load), and the valve rod 22 of the rebound damping adjustment mechanism is counterclockwise rotated (to increase the gap between the valve plug 21 and the valve port 24, and to reduce the rebound damping), so as to improve the buffering capacity of the shock absorber to large impact, and to balance the comfort and maneuverability.

[0023] According to the technical scheme, the three-way independent adjustment of the spring preloading adjustment mechanism 40, the compression damping adjustment mechanism 50 and the rebound damping adjustment mechanism 60 (driven by the knob 28) can dynamically adjust the spring 14 rigidity, the damping liquid flow resistance and the rebound speed according to actual road conditions, and effectively improves the driving comfort under different road conditions; the structure is compact, the adjustment operation is convenient, and the utility model is suitable for the front damping scene of the straddle-type motorcycle.

Claims

1. A positive three-adjustable front shock absorber, characterized by: It comprises a base (1), a gas cylinder (2), a working cylinder (3), a first inner tube (4), a second inner tube (5), a telescopic tube (6), a spring (14), a spring preload adjustment mechanism, a compression damping adjustment mechanism, and a rebound damping adjustment mechanism; The base (1) is connected to a working cylinder (3), a first inner tube (4), a second inner tube (5) and a telescopic tube (6), the telescopic tube (6) is arranged between the second inner tube (5) and the working cylinder, the first inner tube and the second inner tube (5) are arranged in the working cylinder, a piston (7) sliding along the first inner tube (4) is arranged, a piston rod (8) is connected to the piston (7), a first sealing plug (9) is arranged between the port of the first inner tube (4), the port of the second inner tube (5) and the inner wall of the telescopic tube (6), a second sealing plug (10) is arranged at the opening of the working cylinder (3), and a sealing plug (11) is provided between the first inner tube (4) and the second inner tube (5). A reflux channel (11) is provided, a through hole (12) leading to the reflux channel is opened on the peripheral wall of the first inner tube (4) near the second sealing plug (10), the telescopic tube (6) passes through the middle hole of the second sealing plug (10), the piston rod (8) passes through the middle hole of the first sealing plug (9), a movable spring seat (13) is sleeved on the piston rod (8), the spring (14) is provided between the spring seat (13) and the second sealing plug (10), the end of the telescopic tube (6) is connected to a spring preload adjustment mechanism, and the spring preload adjustment mechanism (40) can drive the spring seat (13) to expand and contract along the axial direction of the piston rod (8); A gas cylinder (2) is fixedly mounted on the base (1); the gas cylinder (2) is in communication with the return channel (11) through a first channel (29) and in communication with the first inner tube (4) through a second channel (30); a compression damping adjustment mechanism (50) is provided in the second channel (30), and a rebound damping adjustment mechanism (60) is provided in the first channel (29).

2. The upright three-adjustable front shock absorber according to claim 1, characterized in that: The spring preload adjustment mechanism (40) comprises a mounting ring (15) fixed to an inner end of the telescopic tube (6), an inner wall of the mounting ring (15) being provided with an axial guide groove (16), a driving ring (17) being slidably sleeved in the axial guide groove (16); a rotating shaft (18) being rotatably mounted in the mounting ring (15), one end of the rotating shaft (18) extending out of the mounting ring (15) and provided with a rotating cap (19), and the other end being threadedly connected to the driving ring (17); and a spring seat (13) being in contact with the driving ring (17) under the elastic force of a spring (14).

3. The upright three-adjustable front shock absorber according to claim 1, characterized in that: The compression damping adjustment mechanism (50) and the rebound damping adjustment mechanism (60) have the same structure, and both include a valve body (20), a valve plug (21), a valve stem (22) and a valve cover (23); the valve body (20) is sealed and installed in the corresponding installation groove of the base (1), and the valve cover (23) is screwed to the outer port of the valve body (20); a valve port (24) communicating with the channel is provided in the valve body (20), and a guide groove (25) is provided on the valve port (24) toward the inner side of the valve body; the valve plug (21) is slidably sleeved in the guide groove (25), and a plug rod (26) is provided on the side of the valve plug (21) close to the valve port (24), and a through groove is provided on the peripheral wall of the plug rod (26); the valve stem (22) is sealed and rotatably installed in the inner cavity of the valve body (20), one end of which is threadedly connected to the valve plug (21), and the other end extends out of the valve cover (23) and is provided with a knob (28).

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