A dual chamber shock absorber

Abstract

The present application relates to the technical field of shock absorber, and particularly relates to a double-chamber shock absorber, which comprises a connecting cylinder, a piston rod, a sealing structure, a buffering structure, a protection structure, a fixing structure, an adjusting structure, a limiting structure, a limiting sleeve, a shock absorbing spring, a first cavity, a second cavity, an inflation valve, a connecting block, a connecting head and a throttling piston. The initial tightness of the shock absorbing spring can be adjusted without the help of a wrench through the adjusting structure, so that the adjusting time is reduced and the operation convenience is improved. The adjusting structure can be unfolded under the action of the limiting structure during adjustment, the adjusting structure can be more labor-saving during adjustment after being unfolded, and the adjusting structure can be stored and fixed under the action of the limiting structure when adjustment is not needed, so that the space occupied by the adjusting structure is reduced, and the adjusting structure can be prevented from colliding with the vehicle body during the driving of the motorcycle, so that the shock absorber is more convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorbers, in particular to a double-chamber shock absorber. BACKGROUND

[0002] A shock absorber is used to suppress the shock and impact from the road when the shock absorbing spring rebounds after absorbing the shock, thereby improving the stability of the vehicle when driving on uneven roads. A shock absorber is installed on a motorcycle to reduce the vibration generated during driving. A double-chamber shock absorber is a shock absorber with two chambers, where the throttle piston moves in the inner chamber. This design allows the volume of oil in the inner chamber to increase or shrink as the piston rod is inserted and withdrawn, so the balance of oil in the inner cylinder needs to be maintained by exchanging with the outer chamber. In actual use, the weight of the motorcycle rider varies, so in order to achieve better shock absorption effect, the initial tightness of the shock absorbing spring needs to be adjusted.

[0003] However, the conventional double-chamber shock absorber requires a specific size wrench to adjust the tightness of the shock absorbing spring, and the wrench needs to be taken out before adjustment, which is not convenient for quick adjustment. At the same time, when there is no wrench, the adjustment cannot be completed, resulting in poor convenience of use. In addition, when the shock absorbing effect of the shock absorbing spring deteriorates, the connecting head used to fix the shock absorbing spring on the shock absorber needs to be disassembled. Since the connecting head is screwed onto the piston rod, it takes time to unscrew the connecting head from the piston rod during the disassembly of the shock absorbing spring, which is not convenient for quick disassembly and assembly of the shock absorbing spring, and is not convenient for maintenance and repair of the shock absorbing spring. In addition, the throttle piston may collide inside the shock absorber during reset due to lack of buffer, which may easily cause damage to the shock absorber, resulting in poor safety of use. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a double-chamber shock absorber.

[0005] The technical scheme adopted by the present application to solve its technical problems is: a double-chamber shock absorber, comprising a connecting cylinder, a sealing structure is arranged on the connecting cylinder, a piston rod is arranged on the sealing structure, a buffer structure is arranged on the piston rod, a connecting head is clamped at the top end of the piston rod, a fixing structure is arranged on the connecting head, one of the limiting sleeves is fixedly connected to the connecting head, a protection structure is arranged on the connecting head, an adjusting structure is arranged on the connecting cylinder, a limiting structure is arranged on the adjusting structure, the other limiting sleeve is connected to the adjusting structure, a damping spring is arranged between the two limiting sleeves, an inflation valve is installed on the connecting cylinder, a first cavity is arranged in the connecting cylinder, a second cavity is arranged in the connecting cylinder, a throttling piston is installed at one end of the piston rod, one of the connecting blocks is fixedly connected to one end of the connecting cylinder, the other connecting block is fixedly connected to the connecting head;

[0006] The adjusting structure comprises a threaded sleeve and a connecting seat, the threaded sleeve is threadedly connected to the connecting cylinder, the two connecting seats are fixedly connected to the threaded sleeve, the rotating rod is rotatably connected to the connecting seat, the sliding rod is slidably connected to the inside of the rotating rod, the two sliding blocks are fixedly connected to the two sides of the sliding rod, the two grooves are arranged on the connecting seat, the sliding blocks are clamped between the adjacent grooves, the two sliding grooves are arranged on the two sides of the rotating rod, the sliding blocks are slidably connected between the adjacent sliding grooves, the limiting structure is arranged on the sliding rod, and the limiting sleeve is fixedly connected to one end of the threaded sleeve.

[0007] Specifically, the limiting structure comprises a pull block and a sliding plate, the sliding plate is slidably connected to the inside of the sliding rod, the four second guide grooves are arranged on the sliding plate, the two second clamping blocks are slidably connected to the sliding rod, the second guide shaft is fixedly connected to the second clamping block, the two ends of the second guide shaft extend into the two second guide grooves and are slidably connected with the sliding plate, the second reset spring is arranged in the inside of the sliding rod, one end of the second reset spring is fixedly connected to the sliding rod, and the other end of the second reset spring is fixedly connected to the sliding plate.

[0008] Specifically, one end of the sliding plate is fixedly connected with the pull block, the adjacent two second guide grooves are in V-shaped structure, and the cross section of the sliding plate is in U-shaped structure.

[0009] Specifically, the cross section between the sliding plate and the pull block is in T-shaped structure, the cross section of one end of the second clamping block is in trapezoidal structure, and the second guide shaft penetrates through the second clamping block.

[0010] Specifically, the fixing structure comprises a swivel and a protrusion, the swivel is rotatably connected to the connecting head, six first guide grooves are arranged on the swivel, six first clamping blocks are slidably connected to the connecting head, first guide shafts are fixedly connected to the first clamping blocks, the first guide shafts extend into the adjacent first guide grooves and are slidably connected with the swivel, one end of the first clamping block is clamped with the piston rod, six first return springs are arranged in the connecting head, one end of the first return spring is fixedly connected to the first clamping block, and the other end of the first return spring is fixedly connected to the connecting head.

[0011] Specifically, the cross section of one end of the first clamping block is in a trapezoidal structure, and the outer side of the swivel is fixedly connected with two protrusions.

[0012] Specifically, the six first guide grooves are arranged in a circumferential array about the middle part of the swivel, and one end of the piston rod is in a prismatic structure.

[0013] Specifically, the sealing structure comprises a sealing plug and a sealing ring, the sealing plug is threadedly connected to one end of the connecting cylinder, the piston rod is slidably connected to the sealing plug, the sealing ring is clamped on the sealing plug, the sealing ring is slidably connected with the piston rod, the baffle is detachably installed on the sealing plug through a plurality of fixing bolts, the baffle abuts against the sealing ring, the sealing gasket is clamped on one end of the connecting cylinder, and the sealing gasket abuts against the sealing plug.

[0014] Specifically, the buffering structure comprises a sliding column and a connecting ring, the connecting ring is fixedly connected to the piston rod, two sliding columns are slidably connected to the connecting ring, the same abutting block is fixedly connected to one end of the two sliding columns, the abutting block abuts against the sealing plug, the buffering spring is sleeved outside the sliding column, one end of the buffering spring is fixedly connected to the sliding column, and the other end of the buffering spring is fixedly connected to the connecting ring.

[0015] Specifically, the protection structure comprises a protective cover and a sealing ring, the protective cover is fixedly connected to the connecting head, the sealing ring is clamped on the outer side of the sealing plug, and the sealing ring abuts against the protective cover.

[0016] The beneficial effects of the present application are:

[0017] The dual-chamber shock absorber of this invention allows for adjustment of the initial tension of the shock absorber spring without the aid of a wrench via an adjustable structure. This avoids the need to spend time retrieving a wrench or the inability to adjust without one, thus reducing adjustment time and improving operational convenience. During adjustment, the adjustable structure unfolds under the action of a limiting structure, making adjustment easier. When no adjustment is needed, the adjustable structure can be retracted and secured under the action of the limiting structure, reducing the space occupied by the adjustable structure and preventing collisions between the adjustable structure and the motorcycle body during operation, further enhancing ease of use.

[0018] (2) The dual-chamber shock absorber of the present invention can quickly remove the connector from the end of the piston rod through the fixed structure. After the connector is removed, it will not block the shock absorber spring, and then the shock absorber spring can be removed, thereby realizing the quick removal of the shock absorber spring and facilitating the replacement of the shock absorber spring.

[0019] (3) The dual-chamber shock absorber of the present invention can seal the end of the connecting cylinder through the sealing structure. During the resetting process of the throttling piston, the buffer structure will come into contact with the sealing structure and play a buffering role, thereby avoiding the impact between the throttling piston and the sealing structure, effectively improving the safety of use. The protective structure can shield and protect the piston rod, thereby ensuring the cleanliness of the piston rod surface, thus ensuring the sealing between the piston rod and the sealing structure and reducing the probability of oil leakage. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a dual-chamber shock absorber provided by the present invention;

[0022] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0023] Figure 3 This is a schematic diagram of the connection structure between the piston rod and the throttling piston of the present invention;

[0024] Figure 4 for Figure 3 The enlarged schematic diagram of section B is shown below;

[0025] Figure 5 This is a schematic diagram of the connection structure between the rotating ring and the first guide groove of the present invention;

[0026] Figure 6 The structural schematic view of the first clamping block of the present application;

[0027] Figure 7 The structural schematic view of the first clamping block of the present application; Figure 3 The enlarged schematic view of the C part shown in the figure;

[0028] Figure 8 The enlarged schematic view of the D part shown in the figure; Figure 3 The enlarged schematic view of the D part shown in the figure;

[0029] Figure 9 The structural schematic view of the connecting structure of the pulling block and the sliding plate of the present application;

[0030] Figure 10 The structural schematic view of the connecting structure of the connecting seat and the groove of the present application;

[0031] Figure 11 The structural schematic view of the connecting structure of the sliding plate and the second guide groove of the present application.

[0032] In the figure: 1, connecting cylinder; 2, piston rod; 3, sealing structure; 301, sealing plug; 302, sealing ring; 303, baffle; 304, fixing bolt; 305, sealing gasket; 4, buffer structure; 401, abutting block; 402, sliding column; 403, connecting ring; 404, buffer spring; 5, protection structure; 501, protective cover; 502, sealing ring; 6, fixing structure; 601, swivel ring; 602, protruding block; 603, first guide groove; 604, first guide shaft; 605, first clamping block; 606, first reset spring; 7, adjusting structure; 701, threaded sleeve; 702, connecting seat; 703, swivel rod; 704, sliding rod; 705, sliding block; 706, groove; 707, sliding groove; 8, limiting structure; 801, pulling block; 802, sliding plate; 803, second guide groove; 804, second guide shaft; 805, second clamping block; 806, second reset spring; 9, limiting sleeve; 10, shock-absorbing spring; 11, first cavity; 12, second cavity; 13, inflation valve; 14, connecting block; 15, connecting head; 16, throttling piston. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0034] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8The double-chamber shock absorber comprises a connecting cylinder 1, a sealing structure 3 is arranged on the connecting cylinder 1, a piston rod 2 is arranged on the sealing structure 3, a buffer structure 4 is arranged on the piston rod 2, a connecting head 15 is clamped on the top end of the piston rod 2, a fixing structure 6 is arranged on the connecting head 15, one of the limiting sleeves 9 is fixedly connected on the connecting head 15, a protection structure 5 is arranged on the connecting head 15, an adjusting structure 7 is arranged on the connecting cylinder 1, a limiting structure 8 is arranged on the adjusting structure 7, the other limiting sleeve 9 is connected on the adjusting structure 7, the shock-absorbing springs 10 are arranged between the two limiting sleeves 9, the inflation valve 13 is installed on the connecting cylinder 1, the first cavity 11 is arranged in the connecting cylinder 1, the second cavity 12 is arranged in the connecting cylinder 1, the throttling piston 16 is installed on one end of the piston rod 2, one of the connecting blocks 14 is fixedly connected on one end of the connecting cylinder 1, the other connecting block 14 is fixedly connected on the connecting head 15.

[0035] As Figure 2 , Figure 3 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the adjusting structure 7 includes a threaded sleeve 701 and a connecting seat 702, the threaded sleeve 701 is threadedly connected on the connecting barrel 1, two connecting seats 702 are fixedly connected on the threaded sleeve 701, a rotating rod 703 is rotatably connected on the connecting seat 702, a sliding rod 704 is slidably connected in the rotating rod 703, two sliding blocks 705 are fixedly connected on the two sides of the sliding rod 704, two grooves 706 are arranged on the connecting seat 702, the sliding blocks 705 are clamped between the adjacent grooves 706, two sliding grooves 707 are arranged on the two sides of the rotating rod 703, the sliding blocks 705 are slidably fitted between the adjacent sliding grooves 707, a limiting structure 8 is arranged on the sliding rod 704, a limiting sleeve 9 is fixedly connected on one end of the threaded sleeve 701, the limiting structure 8 includes a pull block 801 and a sliding plate 802, the sliding plate 802 is slidably connected in the sliding rod 704, four second guide grooves 803 are arranged on the sliding plate 802, two second clamping blocks 805 are slidably connected on the sliding rod 704, second guide shafts 804 are fixedly connected on the second clamping blocks 805, the two ends of the second guide shafts 804 extend into the two second guide grooves 803 and are slidably connected with the sliding plate 802, a second reset spring 806 is arranged in the sliding rod 704, one end of the second reset spring 806 is fixedly connected to the sliding rod 704, the other end of the second reset spring 806 is fixedly connected to the sliding plate 802, the sliding plate 802 is fixedly connected with the pull block 801, the two adjacent second guide grooves 803 are V-shaped structures, the cross section of the sliding plate 802 is a U-shaped structure, the cross section between the sliding plate 802 and the pull block 801 is a T-shaped structure, the cross section of one end of the second clamping block 805 is a trapezoidal structure, the second guide shafts 804 penetrate through the second clamping blocks 805, namely: when the initial tightness of the shock absorbing spring 10 needs to be adjusted, the pull block 801 can be pulled, the movement of the pull block 801 drives the movement of the sliding plate 802, the second reset spring 806 is elongated, the movement of the sliding plate 802 drives the movement of the four second guide grooves 803, the movement of the second guide grooves 803 drives the movement of the second guide shafts 804, the movement of the second guide shafts 804 drives the movement of the second clamping blocks 805, so that the two second clamping blocks 805 move away from the rotating rod 703 at the same time, when one end of the second clamping block 805 is not clamped with the rotating rod 703, the sliding rod 704 moves with the sliding plate 802, the movement of the sliding rod 704 drives the movement of the two sliding blocks 705, so that the sliding blocks 705 are not clamped with the grooves 706, then the sliding rod 704 is continuously pulled to move the sliding blocks 705 to one end of the sliding grooves 707, then the sliding rod 704 can be held to rotate the rotating rod 703, the rotating rod 703 rotates on the connecting seat 702, when the rotating rod 703 is perpendicular to the threaded sleeve 701, the threaded sleeve 701 can be rotated by holding the sliding rod 704, the rotation of the threaded sleeve 701 drives the movement of the limiting sleeve 9, the movement of the limiting sleeve 9 changes the initial tightness of the shock absorbing spring 10,Thus, the initial tightness of the shock spring 10 is adjusted, the time-consuming operation of taking a wrench is avoided, and the situation that the adjustment cannot be performed without the wrench is avoided, so that the adjustment time is reduced and the operation is convenient. When adjusting, the length of the force arm is increased by sliding the slide rod 704 out of the inside of the rotating rod 703, so that the labor is saved. When the adjustment is not needed, the slide rod 704 is pushed into the inside of the rotating rod 703 for storage. After the slide rod 704 is completely pushed into the inside of the rotating rod 703, the sliding block 705 is clamped with the groove 706, so that the rotating rod 703 is prevented from rotating. The clamping between the two second clamping blocks 805 and the rotating rod 703 prevents the slide rod 704 from sliding out of the inside of the rotating rod 703, so that the space is reduced, and the collision between the rotating rod 703 and the slide rod 704 and the vehicle body during the driving of the motorcycle is avoided, so that the use is more convenient.

[0036] Specifically, as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the fixing structure 6 comprises a rotating ring 601 and a protrusion 602, the rotating ring 601 is rotatably connected on the connecting head 15, six first guide grooves 603 are arranged on the rotating ring 601, six first clamping blocks 605 are slidably connected on the connecting head 15, first guide shafts 604 are fixedly connected on the first clamping blocks 605, the first guide shafts 604 extend into the first guide grooves 603 and are slidably connected with the rotating ring 601, one end of the first clamping blocks 605 is clamped with the piston rod 2, six first return springs 606 are arranged in the connecting head 15, one end of the first return springs 606 is fixedly connected with the first clamping blocks 605, the other end of the first return springs 606 is fixedly connected with the connecting head 15, the cross section of one end of the first clamping blocks 605 is in a trapezoidal structure, the outer side of the rotating ring 601 is fixedly connected with two protrusions 602, the six first guide grooves 603 are circumferentially arranged about the middle part of the rotating ring 601, one end of the piston rod 2 is in a prism structure, that is, when the damping spring 10 needs to be replaced, the rotating ring 601 can be rotated, the two protrusions 602 can facilitate the rotation of the rotating ring 601, the rotating ring 601 rotates to drive the six first guide grooves 603 to move, the movement of the first guide grooves 603 drives the first guide shafts 604 to move in the first guide grooves 603, while the first guide shafts 604 move in the first guide grooves 603, the first clamping blocks 605 move away from the piston rod 2, the first return springs 606 contract, when one end of the plurality of first clamping blocks 605 is not clamped with the end of the piston rod 2, the connecting head 15 can be removed from the end of the piston rod 2, which avoids the need to spend more time to twist the connecting head 15 from the end of the piston rod 2, after the connecting head 15 is removed, the damping spring 10 is not shielded, so the damping spring 10 can be disassembled, thereby realizing the quick disassembly of the damping spring 10, facilitating the replacement of the damping spring 10.

[0037] Specifically, as Figure 1 , Figure 3 and Figure 7As shown, the sealing structure 3 comprises a sealing plug 301 and a sealing ring 302, one end of the connecting barrel 1 is threadedly connected with the sealing plug 301, the piston rod 2 is slidingly connected on the sealing plug 301, the sealing ring 302 is clamped on the sealing plug 301, the sealing ring 302 is slidingly connected with the piston rod 2, the baffle 303 is detachably installed on the sealing plug 301 through a plurality of fixing bolts 304, the baffle 303 abuts against the sealing ring 302, the sealing gasket 305 is clamped on one end of the connecting barrel 1, the sealing gasket 305 abuts against the sealing plug 301, the buffer structure 4 comprises a sliding column 402 and a connecting ring 403, the connecting ring 403 is fixedly connected on the piston rod 2, two sliding columns 402 are slidingly connected on the connecting ring 403, one end of the two sliding columns 402 is fixedly connected with the same abutting block 401, the abutting block 401 abuts against the sealing plug 301, the buffer spring 404 is sleeved on the outside of the sliding column 402, one end of the buffer spring 404 is fixedly connected with the sliding column 402, the other end of the buffer spring 404 is fixedly connected with the connecting ring 403, the protection structure 5 comprises a protective cover 501 and a sealing ring 502, the protective cover 501 is fixedly connected on the connecting head 15, the sealing ring 502 is clamped on the outside of the sealing plug 301, the sealing ring 502 abuts against the protective cover 501, that is, the one end of the connecting barrel 1 can be sealed through the sealing plug 301, when the piston rod 2 slides on the sealing plug 301, the sealing property between the piston rod 2 and the sealing plug 301 can be improved through the sealing ring 302, the sealing property between the sealing plug 301 and the connecting barrel 1 can be improved through the sealing gasket 305, when the two fixing bolts 304 are twisted off from the sealing plug 301, the baffle 303 will not abut against the sealing ring 302, so that the sealing ring 302 can be replaced conveniently, when the abutting block 401 abuts against the sealing plug 301 first, then the two sliding columns 402 slide on the connecting ring 403, and the two buffer springs 404 contract simultaneously, so that the two buffer springs 404 can play a buffering role in the process of resetting the piston rod 2, avoiding impact, thereby effectively improving the safety in use, when the dust and sand fall on the piston rod 2, the piston rod 2 will be abraded seriously in the process of movement, when the sealing plug 301 and the sealing ring 302 are abraded seriously, oil leakage will occur, therefore, the piston rod 2 can be shielded and protected through the protective cover 501, so that the surface of the piston rod 2 can be kept clean, thereby reducing the probability of oil leakage, the sealing property can be improved through the sealing ring 502, thereby increasing the protection effect.

[0038] The application can install the shock absorber on the motorcycle through the two connecting blocks 14, limit the shock absorbing spring 10 through the two limiting sleeves 9, avoid the position deviation of the shock absorbing spring 10, contract the shock absorbing spring 10 under the impact force when the motorcycle runs on the uneven road, slide the piston rod 2 on the sealing plug 301, drive the throttle piston 16 to move through the movement of the piston rod 2, enter the first cavity 11, occupy the space in the first cavity 11, and enter the second cavity 12 under the pressure of the oil in the first cavity 11, at the same time, compress the gas in the second cavity 12, generate a certain resistance under the action of the throttle piston 16 when the shock absorbing spring 10 resets, the resistance can offset the extension elasticity of the shock absorbing spring 10, avoid the jumping of the shock absorbing spring 10, and have the damping effect, seal one end of the connecting cylinder 1 through the sealing plug 301, improve the sealing between the piston rod 2 and the sealing plug 301 through the sealing ring 302 when the piston rod 2 slides on the sealing plug 301, improve the sealing between the sealing plug 301 and the connecting cylinder 1 through the sealing gasket 305, remove the two fixing bolts 304 from the sealing plug 301 to make the baffle 303 not resist the sealing ring 302, so as to replace the sealing ring 302, resist the sealing plug 301 when the piston rod 2 resets, then slide the two slide columns 402 on the connecting ring 403, and contract the two buffer springs 404 at the same time, so as to contract the two buffer springs 404 to play the buffering role when the piston rod 2 resets, avoid the impact, and effectively improve the safety in use, the sealing plug 301 and the sealing ring 302 are abraded seriously when the dust and sand fall on the piston rod 2 and move in the process of the piston rod 2, and the oil leakage occurs, so the protective cover 501 can shield and protect the piston rod 2 to ensure the cleanliness of the surface of the piston rod 2, thereby reducing the oil leakage probability, and the sealing ring 502 can improve the sealing, thereby increasing the protection effect.

[0039] When the initial tightness of the damping spring 10 needs to be adjusted, the pull block 801 can be pulled, the movement of the pull block 801 drives the movement of the sliding plate 802, the second reset spring 806 is elongated, the movement of the sliding plate 802 drives the movement of the four second guide grooves 803, the movement of the second guide grooves 803 drives the movement of the second guide shaft 804, the movement of the second guide shaft 804 drives the movement of the second clamping block 805, so that the two second clamping blocks 805 move away from the rotating rod 703 at the same time, when the end of the second clamping block 805 is not engaged with the rotating rod 703, the slide rod 704 moves with the sliding plate 802, the movement of the slide rod 704 drives the movement of the two sliding blocks 705, so that the sliding block 705 is not engaged with the groove 706, then continue to pull the slide rod 704 to make the sliding block 705 move to one end of the sliding groove 707, then the slide rod 704 can be held to rotate the rotating rod 703, the rotating rod 703 rotates on the connecting seat 702, when the rotating rod 703 is perpendicular to the threaded sleeve 701, the threaded sleeve 701 can be rotated by holding the slide rod 704, the rotation of the threaded sleeve 701 drives the movement of the limiting sleeve 9, the movement of the limiting sleeve 9 changes the initial tightness of the damping spring 10, so as to adjust the initial tightness of the damping spring 10, avoid the need to spend time to take a wrench, and the situation that there is no wrench to adjust, so as to not only reduce the adjustment time, also improve the convenience of operation, when adjusting, the length of the force arm can be increased by sliding the slide rod 704 out of the inside of the rotating rod 703, so as to save labor, when not adjusting, the slide rod 704 can be pushed into the inside of the rotating rod 703 for storage, when the slide rod 704 is completely pushed into the inside of the rotating rod 703, the sliding block 705 is engaged with the groove 706, so as to avoid the rotation of the rotating rod 703, at the same time, the engagement between the two second clamping blocks 805 and the rotating rod 703 can avoid the slide rod 704 from sliding out of the inside of the rotating rod 703, so as to not only reduce the occupation of space, but also avoid the collision between the rotating rod 703 and the slide rod 704 and the vehicle body during driving, so as to be more convenient to use;

[0040] When the shock absorbing spring 10 needs to be replaced, the swivel ring 601 can be rotated, the swivel ring 601 can be conveniently rotated by arranging two protrusions 602, the rotation of the swivel ring 601 drives the six first guide grooves 603 to move, the movement of the first guide grooves 603 drives the first guide shaft 604 to move inside the first guide grooves 603, while the first guide shaft 604 moves inside the first guide grooves 603, the first clamping block 605 moves away from the piston rod 2, the first return spring 606 contracts, when the one end of the plurality of first clamping blocks 605 is not clamped with the end of the piston rod 2, the connecting head 15 can be removed from the end of the piston rod 2, avoiding the need to spend more time to twist the connecting head 15 from the end of the piston rod 2, after the connecting head 15 is removed, the shock absorbing spring 10 is not shielded, so the shock absorbing spring 10 can be disassembled, thereby realizing the quick disassembly of the shock absorbing spring 10, facilitating the replacement of the shock absorbing spring 10.

[0041] It will be obvious to a person skilled in the art that, as the application is not limited to the details of the foregoing exemplary embodiments but can be implemented in other concrete forms, the embodiments described herein are only exemplary and non-limiting, the scope of the application is defined by the claims appended thereto rather than the foregoing description, and all variations falling within the meaning and range of the essential elements of the claims are intended to be embraced in the application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0042] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A twin-chamber shock absorber, characterized by, Including connecting cylinder (1), be equipped with sealing structure (3) on connecting cylinder (1), be equipped with piston rod (2) on sealing structure (3), be equipped with buffer structure (4) on piston rod (2), the top end of piston rod (2) is engaged with connector (15), be equipped with fixed structure (6) on connector (15), one of the fixed connection of limit sleeve (9) is established on connector (15), be equipped with protection structure (5) on connector (15), be equipped with adjusting structure (7) on connecting cylinder (1), be equipped with limit structure (8) on adjusting structure (7), the other limit sleeve (9) is connected on adjusting structure (7), the damping spring (10) is established between two limit sleeve (9), the inflation valve (13) is installed on connecting cylinder (1), the inside of connecting cylinder (1) is equipped with first cavity (11), the inside of connecting cylinder (1) is equipped with second cavity (12), the one end of piston rod (2) is installed with throttling piston (16), one of the fixed connection of link block (14) is established on connecting cylinder (1), the other link block (14) is fixedly connected on connector (15); The adjusting structure (7) includes threaded sleeve (701) and connecting seat (702), the threaded sleeve (701) is threadedly connected on the connecting cylinder (1), the two connecting seats (702) are fixedly connected on the threaded sleeve (701), the rotating rod (703) is rotatably connected on the connecting seat (702), the sliding rod (704) is slidably connected in the rotating rod (703), the two sliding blocks (705) are fixedly connected on the two sides of the sliding rod (704), the two grooves (706) are arranged on the connecting seat (702), the sliding block (705) is clamped between the adjacent groove (706), the two sliding grooves (707) are arranged on the two sides of the rotating rod (703), the sliding block (705) is slidably connected between the adjacent sliding groove (707), the limit structure (8) is arranged on the sliding rod (704), and the limit sleeve (9) is fixedly connected to one end of the threaded sleeve (701).

2. A twin-chamber shock absorber according to claim 1, characterized in that: The limit structure (8) includes pull block (801) and sliding plate (802), the sliding plate (802) is slidably connected in the sliding rod (704), the four second guide grooves (803) are arranged on the sliding plate (802), the two second clamping blocks (805) are slidably connected on the sliding rod (704), the second guide shaft (804) is fixedly connected on the second clamping block (805), the two ends of the second guide shaft (804) extend into the two second guide grooves (803) and are slidably connected with the sliding plate (802), the second reset spring (806) is arranged in the sliding rod (704), one end of the second reset spring (806) is fixedly connected to the sliding rod (704), and the other end of the second reset spring (806) is fixedly connected to the sliding plate (802).

3. A twin-chamber shock absorber according to claim 2, characterized in that: One end of the sliding plate (802) is fixedly connected with a pull block (801), two adjacent second guide grooves (803) are in V-shaped structure, and the cross section of the sliding plate (802) is in U-shaped structure.

4. A twin-chamber shock absorber according to claim 2, characterized in that: The cross section between the sliding plate (802) and the pull block (801) is in T-shaped structure, the cross section of one end of the second clamping block (805) is in trapezoidal structure, and the second guide shaft (804) penetrates through the second clamping block (805).

5. A twin-chamber shock absorber according to claim 1, characterized in that: The fixing structure (6) comprises a swivel (601) and a protruding block (602), the connecting head (15) is rotatably connected with the swivel (601), six first guide grooves (603) are arranged on the swivel (601), six first clamping blocks (605) are slidably connected on the connecting head (15), first guide shafts (604) are fixedly connected on the first clamping blocks (605), the first guide shafts (604) extend into the adjacent first guide grooves (603) and are slidably connected with the swivel (601), one end of the first clamping block (605) is clamped with the piston rod (2), six first return springs (606) are arranged in the connecting head (15), one end of the first return spring (606) is fixedly connected with the first clamping block (605), and the other end of the first return spring (606) is fixedly connected with the connecting head (15).

6. A twin-chamber shock absorber according to claim 5, characterized in that: The cross section of one end of the first clamping block (605) is in trapezoidal structure, and the outer side of the swivel (601) is fixedly connected with two protruding blocks (602).

7. A twin-chamber shock absorber according to claim 5, characterized in that: The six first guide grooves (603) are arranged in circumferential array about the middle part of the swivel (601), and one end of the piston rod (2) is in prismatic structure.

8. A twin-chamber shock absorber according to claim 7, characterized in that: The sealing structure (3) comprises a sealing plug (301) and a sealing ring (302), one end of the connecting cylinder (1) is threadedly connected with the sealing plug (301), the piston rod (2) is slidably connected on the sealing plug (301), the sealing ring (302) is clamped on the sealing plug (301), the sealing ring (302) is slidably connected with the piston rod (2), the baffle (303) is detachably installed on the sealing plug (301) through a plurality of fixing bolts (304), the baffle (303) abuts against the sealing ring (302), the sealing gasket (305) is clamped on one end of the connecting cylinder (1), and the sealing gasket (305) abuts against the sealing plug (301).

9. A twin-chamber shock absorber according to claim 8, characterized in that: The buffer structure (4) comprises a sliding column (402) and a connecting ring (403), the connecting ring (403) is fixedly connected on the piston rod (2), two sliding columns (402) are slidably connected on the connecting ring (403), one end of the two sliding columns (402) is fixedly connected with the same abutting block (401), the abutting block (401) abuts against the sealing plug (301), the buffer spring (404) is sleeved on the outer part of the sliding column (402), one end of the buffer spring (404) is fixedly connected with the sliding column (402), and the other end of the buffer spring (404) is fixedly connected with the connecting ring (403).

10. A twin-chamber shock absorber according to claim 8, characterized in that: The protection structure (5) comprises a protection cover (501) and a sealing ring (502), the connecting head (15) is fixedly connected with the protection cover (501), the outer side of the sealing plug (301) is clamped with the sealing ring (502), and the sealing ring (502) is in abutment with the protection cover (501).

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