Double-chamber shock absorber

Abstract

The invention relates to the technical field of shock absorbers, in particular 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 damping spring, a first cavity, a second cavity, an inflation valve, a connecting block, a connector and a throttling piston. Through the adjusting structure, the initial tightness of the damping spring can be adjusted without a wrench, so that the adjusting time is shortened, the operation convenience is improved, the adjusting structure can be unfolded under the action of the limiting structure during adjustment, and the adjustment effect is improved. After the adjusting structure is unfolded, more labor can be saved in the adjusting process, when adjustment is not needed, the adjusting structure can be stored and fixed under the action of the limiting structure, therefore, the space occupied by the adjusting structure is reduced, meanwhile, the adjusting structure can be prevented from colliding with a motorcycle body in the running process of the motorcycle, and the service life of the motorcycle is prolonged. Therefore, the use is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, in particular to a double-chamber shock absorber. Background Art

[0002] Shock absorbers are used to suppress the vibration caused by the rebound of the shock-absorbing spring after absorbing shock and the impact from the road surface, so as to improve the stability of the vehicle on uneven roads. Shock absorbers are installed on motorcycles to reduce the vibration generated by the motorcycle during driving. The double-chamber shock absorber is a shock absorber with two inner and outer chambers, in which the throttle piston moves in the inner chamber. This design allows the volume of the oil in the inner chamber to increase or shrink as the piston rod enters and is withdrawn. Therefore, it is necessary to maintain the balance of the oil in the inner cylinder through exchange with the outer chamber. In actual use, due to the different weights of motorcycle riders, in order to obtain a better shock-absorbing effect, the initial tightness of the shock-absorbing spring needs to be adjusted.

[0003] However, the traditional dual-chamber shock absorber requires the use of a wrench of specific specifications to adjust the tightness of the shock absorber spring, and the wrench needs to be taken before adjustment, which is not convenient for quick adjustment. At the same time, the adjustment cannot be completed without a wrench, resulting in poor convenience of use. When the shock absorbing effect of the shock absorber spring deteriorates, the connecting head used to fix the shock absorber spring on the shock absorber needs to be removed. Since the connecting head is threadedly connected to the piston rod, it takes a certain amount of time to twist the connecting head off the piston rod during the process of removing the shock absorber spring, which is not convenient for quick disassembly and assembly of the shock absorber spring, and is not convenient for inspection and maintenance of the shock absorber spring. In addition, the throttling piston may collide with the inside of the shock absorber due to the lack of buffer during the resetting process, which can easily cause damage to the shock absorber and lead to poor safety of use. Summary of the invention

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

[0005] The technical solution adopted by the present invention to solve its technical problems is: a double-chamber shock absorber, comprising a connecting cylinder, a sealing structure is provided on the connecting cylinder, a piston rod is provided on the sealing structure, a buffer structure is provided on the piston rod, a connecting head is clamped on the top of the piston rod, a fixing structure is provided on the connecting head, one of the limiting sleeves is fixedly connected to the connecting head, a protective structure is provided on the connecting head, an adjusting structure is provided on the connecting cylinder, a limiting structure is provided on the adjusting structure, another limiting sleeve is connected to the adjusting structure, a shock-absorbing spring is provided between the two limiting sleeves, an inflation valve is installed on the connecting cylinder, a first cavity is provided inside the connecting cylinder, a second cavity is provided inside the connecting cylinder, a throttling piston is installed at one end of the piston rod, one end of the connecting cylinder is fixedly connected to one of the connecting blocks, and the connecting head is fixedly connected to the other connecting block; The adjusting structure includes a threaded sleeve and a connecting seat, the connecting cylinder is threadedly connected with a threaded sleeve, the threaded sleeve is fixedly connected with two connecting seats, the connecting seat is rotatably connected with a rotating rod, the interior of the rotating rod is slidably connected with a sliding rod, two sliding blocks are fixedly connected on both sides of the sliding rod, the connecting seat is provided with two grooves, the sliding blocks are engaged with adjacent grooves, two sliding grooves are provided on both sides of the rotating rod, the sliding blocks are slidably matched with adjacent sliding grooves, a limiting structure is provided on the sliding rod, and one end of the threaded sleeve is fixedly connected to the limiting sleeve.

[0006] Specifically, the limiting structure includes a pulling block and a sliding plate, the sliding plate is slidably connected to the inside of the sliding rod, four second guide grooves are provided on the sliding plate, two second clamping blocks are slidably connected to the sliding rod, a second guide shaft is fixedly connected to the second clamping block, two ends of the second guide shaft respectively extend to the inside of the two second guide grooves and are slidably connected to the sliding plate, a second return spring is provided inside the sliding rod, one end of the second return spring is fixedly connected to the sliding rod, and the other end of the second return spring is fixedly connected to the sliding plate.

[0007] Specifically, one end of the slide plate is fixedly connected to a pulling block, two adjacent second guide grooves form a V-shaped structure, and the cross-section of the slide plate is a U-shaped structure.

[0008] Specifically, the cross section between the slide plate and the pull block is in a T-shaped structure, the cross section of one end of the second clamping block is in a trapezoidal structure, and the second guide shaft passes through the second clamping block.

[0009] Specifically, the fixed structure includes a swivel and a protrusion, the connecting head is rotatably connected with a swivel, the swivel is provided with six first guide grooves, the connecting head is slidably connected with six first clamping blocks, the first clamping block is fixedly connected with a first guide shaft, the first guide shaft extends to the interior of the adjacent first guide groove and is slidably connected to the swivel, one end of the first clamping block is engaged with the piston rod, six first return springs are provided inside 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.

[0010] Specifically, the cross section of one end of the first clamping block is a trapezoidal structure, and two protrusions are fixedly connected to the outer side of the rotating ring.

[0011] Specifically, the six first guide grooves are distributed in a circular array about the middle of the rotating ring, and one end of the piston rod is in a prismatic structure.

[0012] Specifically, the sealing structure includes a sealing plug and a sealing ring. A sealing plug is threadedly connected to one end of the connecting tube. A piston rod is slidably connected to the sealing plug. A sealing ring is clamped on the sealing plug. The sealing ring and the piston rod are slidably connected. A baffle is detachably installed on the sealing plug via a plurality of fixing bolts. The baffle abuts against the sealing ring. A sealing gasket is clamped on one end of the connecting tube, and the sealing gasket abuts against the sealing plug.

[0013] Specifically, the buffer structure includes a sliding column and a connecting ring, the piston rod is fixedly connected to the connecting ring, two sliding columns are slidably connected to the connecting ring, one end of the two sliding columns is fixedly connected to the same abutment block, the abutment block abuts against the sealing plug, a buffer spring is provided on the outer sleeve of the sliding column, one end of the buffer spring is fixedly connected to the sliding column, and the other end of the buffer spring is fixedly connected to the connecting ring.

[0014] Specifically, the protection structure includes a protection cover and a sealing ring. The protection cover is fixedly connected to the connecting head. The sealing ring is engaged with the outer side of the sealing plug. The sealing ring is in contact with the protection cover.

[0015] The beneficial effects of the present invention are: The dual-chamber shock absorber described in the present invention can adjust the initial tightness of the shock-absorbing spring through the adjustment structure without the aid of a wrench, thereby avoiding the need to spend time to get a wrench and the situation where adjustment cannot be made without a wrench. This not only reduces the adjustment time, but also improves the convenience of operation, making it easier to use. During adjustment, the adjustment structure can be unfolded under the action of the limiting structure. After the adjustment structure is unfolded, it can save more effort during the adjustment process. When adjustment is not needed, the adjustment structure can be stored and fixed under the action of the limiting structure. This not only reduces the space occupied by the adjustment structure, but also avoids the adjustment structure from colliding with the vehicle body during the driving of the motorcycle, making it easier to use.

[0016] (2) The dual-chamber shock absorber described in the present invention can quickly remove the connecting head from the end of the piston rod through the fixing structure. After the connecting head is removed, it will not resist the shock absorbing spring. Then, the shock absorbing spring can be removed, thereby realizing the rapid removal of the shock absorbing spring and facilitating the replacement of the shock absorbing spring.

[0017] (3) The dual-chamber shock absorber described in the present invention can seal the end of the connecting tube through the sealing structure. During the resetting process of the throttle piston, the buffer structure will contact the sealing structure and play a buffering role through the buffer structure, thereby avoiding the collision between the throttle piston and the sealing structure, effectively improving the safety of use. The piston rod can be shielded and protected by the protective structure, thereby ensuring the cleanliness of the piston rod surface, thereby ensuring the sealing between the piston rod and the sealing structure, and reducing the probability of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a dual-chamber shock absorber provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 It is a schematic diagram of the connection structure between the piston rod and the throttling piston of the present invention; Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown; Figure 5 It is a schematic diagram of the connection structure between the rotating ring and the first guide groove of the present invention; Figure 6 It is a structural schematic diagram of the first card block of the present invention; Figure 7 for Figure 3An enlarged schematic diagram of part C is shown; Figure 8 for Figure 3 An enlarged schematic diagram of the D portion shown; Fig. 9 It is a schematic diagram of the connection structure between the pull block and the slide plate of the present invention; Fig.10 It is a schematic diagram of the connection structure between the connection seat and the groove of the present invention; Fig.11 It is a schematic diagram of the connection structure between the slide plate and the second guide groove of the present invention.

[0020] In the figure: 1, connecting tube; 2, piston rod; 3, sealing structure; 301, sealing plug; 302, sealing ring; 303, baffle; 304, fixing bolt; 305, sealing gasket; 4, buffer structure; 401, block; 402, sliding column; 403, connecting ring; 404, buffer spring; 5, protective structure; 501, protective cover; 502, sealing ring; 6, fixing structure; 601, rotating ring; 602, protrusion; 603, first guide groove; 604, first guide shaft; 605, first clamping block; 606, first reset Spring; 7. Adjustment structure; 701. Threaded sleeve; 702. Connecting seat; 703. Rotating 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 return spring; 9. Limiting sleeve; 10. Shock-absorbing spring; 11. First cavity; 12. Second cavity; 13. Inflating valve; 14. Connecting block; 15. Connecting head; 16. Throttle piston. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, a dual-chamber shock absorber described in the present invention includes a connecting cylinder 1, a sealing structure 3 is provided on the connecting cylinder 1, a piston rod 2 is provided on the sealing structure 3, a buffer structure 4 is provided on the piston rod 2, a connector 15 is engaged with the top end of the piston rod 2, a fixing structure 6 is provided on the connecting head 15, one of the limiting sleeves 9 is fixedly connected to the connecting head 15, a protective structure 5 is provided on the connecting head 15, an adjusting structure 7 is provided on the connecting cylinder 1, a limiting structure 8 is provided on the adjusting structure 7, another limiting sleeve 9 is connected to the adjusting structure 7, a shock absorbing spring 10 is provided between the two limiting sleeves 9, an inflation valve 13 is installed on the connecting cylinder 1, a first cavity 11 is provided inside the connecting cylinder 1, a second cavity 12 is provided inside the connecting cylinder 1, a throttling piston 16 is installed at one end of the piston rod 2, one end of the connecting cylinder 1 is fixedly connected to one of the connecting blocks 14, and another connecting block 14 is fixedly connected to the connecting head 15; like Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the adjustment structure 7 includes a threaded sleeve 701 and a connecting seat 702, the connecting tube 1 is threadedly connected with a threaded sleeve 701, the threaded sleeve 701 is fixedly connected with two connecting seats 702, the connecting seat 702 is rotatably connected with a rotating rod 703, the interior of the rotating rod 703 is slidably connected with a sliding rod 704, two sliding blocks 705 are fixedly connected on both sides of the sliding rod 704, the connecting seat 702 is provided with two grooves 706, the sliding blocks 705 are engaged with adjacent grooves 706, two sliding grooves 707 are provided on both sides of the rotating rod 703, the sliding blocks 705 are slidably matched with adjacent sliding grooves 707, a limiting structure 8 is provided on the sliding rod 704, one end of the threaded sleeve 701 is fixedly connected to the limited The position sleeve 9, the limiting structure 8 includes a pull block 801 and a slide plate 802, the slide bar 704 is slidably connected to the slide plate 802, the slide plate 802 is provided with four second guide grooves 803, the slide bar 704 is slidably connected to two second clamping blocks 805, the second clamping block 805 is fixedly connected to a second guide shaft 804, the two ends of the second guide shaft 804 respectively extend to the inside of the two second guide grooves 803 and are slidably connected to the slide plate 802, the slide bar 704 is provided with a second return spring 806, one end of the second return spring 806 is fixedly connected to the slide bar 704, the other end of the second return spring 806 is fixedly connected to the slide plate 802, and one end of the slide plate 802 is fixedly connected to the pull block 801. The block 801 has a V-shaped structure between two adjacent second guide grooves 803, the cross-section of the slide plate 802 has a U-shaped structure, the cross-section between the slide plate 802 and the pull block 801 has a T-shaped structure, the cross-section of one end of the second clamping block 805 has a trapezoidal structure, and the second guide shaft 804 runs through the second clamping block 805, that is, when the initial tightness of the shock-absorbing spring 10 needs to be adjusted, the pull block 801 can be pulled, and the movement of the pull block 801 will drive the slide plate 802 to move, the second reset spring 806 is extended, the movement of the slide plate 802 will drive the four second guide grooves 803 to move, the movement of the second guide grooves 803 will drive the second guide shaft 804 to move, and the movement of the second guide shaft 804 will drive the second clamping block 805 to move, so that the two second When the second clamping block 805 is not engaged with the rotating rod 703, the sliding bar 704 will move with the sliding plate 802, and the movement of the sliding bar 704 will drive the two sliding blocks 705 to move, so that the sliding blocks 705 are not engaged with the groove 706, and then the sliding bar 704 is pulled continuously to make the sliding block 705 move to one end of the sliding groove 707, and then the sliding bar 704 can be held to rotate the rotating rod 703, and the rotating rod 703 can be rotated on the connecting seat 702, and when the rotating rod 703 is rotated to be perpendicular to the threaded sleeve 701, the threaded sleeve 701 can be rotated by holding the sliding bar 704, and the rotation of the threaded sleeve 701 will drive the limiting sleeve 9 to move, and the movement of the limiting sleeve 9 will change the initial tightness of the shock absorbing spring 10.Thus, the initial tightness of the shock-absorbing spring 10 can be adjusted, and the need to spend time to take out a wrench and the situation where the adjustment cannot be made without a wrench can be avoided. This not only reduces the adjustment time, but also improves the convenience of operation. When adjusting, the slide bar 704 can be slid out from the inside of the rotating rod 703 to increase the length of the force arm, thereby saving effort. When no adjustment is needed, the slide bar 704 can be pushed into the inside of the rotating rod 703 for storage. When the slide bar 704 is fully pushed into the inside of the rotating rod 703, the slider 705 will engage with the groove 706, thereby preventing the rotating rod 703 from rotating. At the same time, the engagement between the two second clamping blocks 805 and the rotating rod 703 can prevent the slide bar 704 from sliding out of the inside of the rotating rod 703, thereby not only reducing the space occupied, but also preventing the rotating rod 703 from colliding with the slide bar 704 and the vehicle body during the driving of the motorcycle, thereby making it more convenient to use.

[0023] Specifically, Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the fixed structure 6 includes a swivel 601 and a protrusion 602, the swivel 601 is rotatably connected to the connecting head 15, the swivel 601 is provided with six first guide grooves 603, the connecting head 15 is slidably connected with six first clamping blocks 605, the first clamping block 605 is fixedly connected with a first guide shaft 604, the first guide shaft 604 extends to the inside of the adjacent first guide groove 603 and is slidably connected to the swivel 601, one end of the first clamping block 605 is engaged with the piston rod 2, six first return springs 606 are provided inside the connecting head 15, one end of the first return spring 606 is fixedly connected to the first clamping block 605, the other end of the first return spring 606 is fixedly connected to the connecting head 15, the cross-section of one end of the first clamping block 605 is a trapezoidal structure, two protrusions 602 are fixedly connected to the outer side of the swivel 601, and the six first guide grooves 603 are distributed in a circular array about the middle part of the swivel 601, One end of the piston rod 2 is in a prismatic structure, that is, when the shock-absorbing spring 10 needs to be replaced, the swivel 601 can be rotated. The two protrusions 602 can be provided to facilitate the rotation of the swivel 601. The rotation of the swivel 601 will drive the six first guide grooves 603 to move. The movement of the first guide grooves 603 will cause the first guide shaft 604 to move inside the first guide grooves 603. When the first guide shaft 604 moves inside the first guide grooves 603, the first clamping block 605 will move away from the piston rod 2, and the first return spring 606 will shrink. When one end of the plurality of first clamping blocks 605 is not engaged with the end of the piston rod 2, the connector 15 can be removed from the end of the piston rod 2, avoiding the need to spend more time to twist the connector 15 off the end of the piston rod 2. After the connector 15 is removed, the shock-absorbing spring 10 will not be blocked, so the shock-absorbing spring 10 can be removed, thereby realizing the rapid disassembly of the shock-absorbing spring 10 and facilitating the replacement of the shock-absorbing spring 10.

[0024] Specifically, Figure 1 , Figure 3 and Figure 7As shown, the sealing structure 3 includes a sealing plug 301 and a sealing ring 302, one end of the connecting tube 1 is threadedly connected to the sealing plug 301, the sealing plug 301 is slidably connected to the piston rod 2, the sealing plug 301 is clamped with a sealing ring 302, the sealing ring 302 and the piston rod 2 are slidably connected, the sealing plug 301 is detachably mounted with a baffle 303 through a plurality of fixing bolts 304, the baffle 303 abuts against the sealing ring 302, one end of the connecting tube 1 is clamped with a sealing gasket 305, the sealing gasket 305 abuts against the sealing plug 301, the buffer structure 4 includes a sliding column 402 and a connecting ring 403, the piston rod 2 is fixedly connected to the sealing plug 301, and the sealing ring 302 is clamped with the sealing plug 301. The connecting ring 403 is connected to the connecting ring 403, and two sliding posts 402 are slidably connected to the connecting ring 403. One end of the two sliding posts 402 is fixedly connected to the same abutment 401, and the abutment 401 abuts against the sealing plug 301. The outer sleeve of the sliding post 402 is provided with a buffer spring 404, and one end of the buffer spring 404 is fixedly connected to the sliding post 402, and the other end of the buffer spring 404 is fixedly connected to the connecting ring 403. The protective structure 5 includes a protective cover 501 and a sealing ring 502. The protective cover 501 is fixedly connected to the connecting head 15, and the outer side of the sealing plug 301 is clamped with a sealing ring 502. The sealing ring 502 and the protective cover 501 are connected. The sealing ring 303 is used to seal the piston rod 2, and the sealing ring 302 is used to improve the sealing performance between the piston rod 2 and the sealing plug 301. The sealing gasket 305 is used to improve the sealing performance between the sealing plug 301 and the connecting tube 1. By unscrewing the two fixing bolts 304 from the sealing plug 301, the baffle 303 will not resist the sealing ring 302, thereby facilitating the replacement of the sealing ring 302. When vibration occurs, the stopper 401 will firstly conflict with the sealing plug 301 during the resetting process of the piston rod 2, and then the two sliding posts 402 will slide on the connecting ring 403. The buffer springs 404 contract at the same time, so that during the resetting process of the piston rod 2, the two buffer springs 404 can contract to play a buffering role, avoiding collision, thereby effectively improving the safety of use. When dust and sand fall on the piston rod 2, the sealing plug 301 and the sealing ring 302 will be greatly worn during the movement of the piston rod 2. When the sealing plug 301 and the sealing ring 302 are severely worn, oil leakage will occur. Therefore, shielding and protecting the piston rod 2 by the protective cover 501 can ensure the cleanliness of the surface of the piston rod 2, thereby reducing the probability of oil leakage. By setting the sealing ring 502, the sealing performance can be improved, thereby increasing the protection effect.

[0025] When the present invention is in use, the shock absorber can be installed on the motorcycle through the two connecting blocks 14, and the shock absorbing spring 10 can be limited by setting two limiting sleeves 9, so as to avoid the position of the shock absorbing spring 10 from being offset. When the motorcycle is running on an uneven road, the shock absorbing spring 10 will shrink under the action of the impact force, and the piston rod 2 will slide on the sealing plug 301. The movement of the piston rod 2 will drive the throttling piston 16 to move. Since the piston rod 2 will occupy the space inside the first cavity 11 after entering the interior of the first cavity 11, the oil inside the first cavity 11 will Under the action of pressure, it enters the interior of the second cavity 12. At the same time, the gas in the second cavity 12 will be compressed. When the shock-absorbing spring 10 is reset, a certain resistance will be generated under the action of the throttling piston 16. The resistance can offset the elongation elastic force of the shock-absorbing spring 10, thereby preventing the shock-absorbing spring 10 from jumping, thereby achieving a shock-absorbing effect. The sealing plug 301 can seal one end of the connecting tube 1, and when the piston rod 2 slides on the sealing plug 301, the sealing ring 302 can improve the sealing between the piston rod 2 and the sealing plug 301 The sealing gasket 305 can improve the sealing performance between the sealing plug 301 and the connecting tube 1. By twisting off the two fixing bolts 304 from the sealing plug 301, the baffle 303 can stop resisting the sealing ring 302, thereby facilitating the replacement of the sealing ring 302. When vibration occurs, the block 401 will firstly contact the sealing plug 301 during the reset of the piston rod 2, and then the two sliding columns 402 will slide on the connecting ring 403, and the two buffer springs 404 will contract at the same time, so that the piston rod 2 can be reset through the two buffer springs 4 04 contraction plays a buffering role, avoiding collision, thereby effectively improving the safety of use. When dust and sand fall on the piston rod 2, the sealing plug 301 and the sealing ring 302 will be greatly worn during the movement of the piston rod 2. When the sealing plug 301 and the sealing ring 302 are severely worn, oil leakage will occur. Therefore, shielding and protecting the piston rod 2 by the protective cover 501 can ensure the cleanliness of the surface of the piston rod 2, thereby reducing the probability of oil leakage. The sealing performance can be improved by setting the sealing ring 502, thereby increasing the protection effect; When the initial tightness of the shock absorbing spring 10 needs to be adjusted, the pull block 801 can be pulled, and the movement of the pull block 801 will drive the slide plate 802 to move, and the second return spring 806 will extend, and the movement of the slide plate 802 will drive the four second guide grooves 803 to move, and the movement of the second guide grooves 803 will drive the second guide shaft 804 to move, and the movement of the second guide shaft 804 will drive the second clamping block 805 to move, so that the two second clamping blocks 805 move away from the rotating rod 703 at the same time. When the two slide blocks 705 are not engaged, the slide bar 704 will move with the slide plate 802, and the movement of the slide bar 704 will drive the two slide blocks 705 to move, so that the slide blocks 705 and the grooves 706 are not engaged, and then the slide bar 704 is continued to be pulled to make the slide block 705 move to one end of the slide groove 707, and then the slide bar 704 can be held to rotate the rotating rod 703, and the rotating rod 703 rotates on the connecting seat 702. When the rotating rod 703 rotates to be perpendicular to the threaded sleeve 701, the threaded sleeve 701 can be rotated by holding the slide bar 704, and the threaded sleeve The rotation of 701 will drive the limit sleeve 9 to move, and the movement of the limit sleeve 9 will change the initial tightness of the shock-absorbing spring 10, thereby realizing the adjustment of the initial tightness of the shock-absorbing spring 10, avoiding the need to spend time to get a wrench, and avoiding the situation that there is no wrench and cannot be adjusted, thereby not only reducing the adjustment time, but also improving the convenience of operation. When adjusting, the slide bar 704 can be slid out from the inside of the rotating rod 703 to increase the length of the force arm, thereby saving effort. When no adjustment is needed, the slide bar 704 can be pushed out The sliding bar 704 is inserted into the rotating rod 703 for storage. When the sliding bar 704 is fully pushed into the rotating rod 703, the sliding block 705 is engaged with the groove 706, thereby preventing the rotating rod 703 from rotating. At the same time, the engagement between the two second clamping blocks 805 and the rotating rod 703 can prevent the sliding bar 704 from sliding out of the rotating rod 703, thereby not only reducing the space occupied, but also preventing the rotating rod 703, the sliding bar 704 and the vehicle body from colliding during the driving of the motorcycle, thereby making it more convenient to use. When the shock-absorbing spring 10 needs to be replaced, the rotating ring 601 can be rotated. By setting two protrusions 602, the rotating ring 601 can be easily rotated. The rotation of the rotating ring 601 will drive the six first guide grooves 603 to move. The movement of the first guide grooves 603 will cause the first guide shaft 604 to move inside the first guide grooves 603. When the first guide shaft 604 moves inside the first guide grooves 603, the first clamping block 605 will move away from the piston rod 2, and the first return spring 606 will shrink. When one end of the multiple first clamping blocks 605 is not engaged 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 off the end of the piston rod 2. After the connecting head 15 is removed, the shock-absorbing spring 10 will not be blocked, so the shock-absorbing spring 10 can be removed, thereby realizing the rapid disassembly of the shock-absorbing spring 10 and facilitating the replacement of the shock-absorbing spring 10.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dual-chamber shock absorber, characterized in that: The invention comprises a connecting tube (1), the connecting tube (1) being provided with a sealing structure (3), the sealing structure (3) being provided with a piston rod (2), the piston rod (2) being provided with a buffer structure (4), a connecting head (15) being engaged with the top end of the piston rod (2), the connecting head (15) being provided with a fixing structure (6), the connecting head (15) being fixedly connected with one of the limiting sleeves (9), the connecting head (15) being provided with a protective structure (5), the connecting tube (1) being provided with an adjusting structure (7), the adjusting structure (7) being provided with a limiting structure ( 8), another limiting sleeve (9) is connected to the adjustment structure (7), a shock absorbing spring (10) is provided between the two limiting sleeves (9), an inflation valve (13) is installed on the connecting tube (1), a first cavity (11) is provided inside the connecting tube (1), a second cavity (12) is provided inside the connecting tube (1), a throttling piston (16) is installed at one end of the piston rod (2), one end of the connecting tube (1) is fixedly connected to one of the connecting blocks (14), and another connecting block (14) is fixedly connected to the connecting head (15); The adjustment structure (7) comprises a threaded sleeve (701) and a connecting seat (702); the connecting tube (1) is threadedly connected with the threaded sleeve (701); the threaded sleeve (701) is fixedly connected with two connecting seats (702); a rotating rod (703) is rotatably connected to the connecting seat (702); a sliding rod (704) is slidably connected inside the rotating rod (703); two sliding blocks (705) are fixedly connected on both sides of the sliding rod (704); two grooves (706) are provided on the connecting seat (702); the sliding blocks (705) are engaged with adjacent grooves (706); two sliding grooves (707) are provided on both sides of the rotating rod (703); the sliding blocks (705) are slidably engaged with adjacent sliding grooves (707); a limiting structure (8) is provided on the sliding rod (704); and one end of the threaded sleeve (701) is fixedly connected with the limiting sleeve (9).

2. A dual-chamber shock absorber according to claim 1, characterized in that: The limiting structure (8) comprises a pulling block (801) and a sliding plate (802); the sliding bar (704) is slidably connected to the sliding plate (802); the sliding plate (802) is provided with four second guide grooves (803); the sliding bar (704) is slidably connected to two second clamping blocks (805); the second clamping blocks (805) are fixedly connected to a second guide shaft (804); the two ends of the second guide shaft (804) respectively extend to the inside of the two second guide grooves (803) and are slidably connected to the sliding plate (802); a second return spring (806) is provided inside the sliding bar (704); one end of the second return spring (806) is fixedly connected to the sliding bar (704); and the other end of the second return spring (806) is fixedly connected to the sliding plate (802).

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

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

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

6. A dual-chamber shock absorber according to claim 5, characterized in that: The cross-section of one end of the first clamping block (605) is a trapezoidal structure, and two protrusions (602) are fixedly connected to the outer side of the rotating ring (601).

7. A dual-chamber shock absorber according to claim 5, characterized in that: The six first guide grooves (603) are distributed in a circular array about the middle of the rotating ring (601), and one end of the piston rod (2) is in a prismatic structure.

8. A dual-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 tube (1) is threadedly connected to the sealing plug (301); the sealing plug (301) is slidably connected to the piston rod (2); the sealing plug (301) is clamped with a sealing ring (302); the sealing ring (302) and the piston rod (2) are slidably connected; a baffle (303) is detachably mounted on the sealing plug (301) via a plurality of fixing bolts (304); the baffle (303) abuts against the sealing ring (302); a sealing gasket (305) is clamped with one end of the connecting tube (1); the sealing gasket (305) abuts against the sealing plug (301).

9. A dual-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) being fixedly connected to the piston rod (2), two sliding columns (402) being slidably connected to the connecting ring (403), one end of the two sliding columns (402) being fixedly connected to the same abutment block (401), the abutment block (401) abutting against the sealing plug (301), a buffer spring (404) being sleeved on the outside of the sliding column (402), one end of the buffer spring (404) being fixedly connected to the sliding column (402), and the other end of the buffer spring (404) being fixedly connected to the connecting ring (403).

10. A dual-chamber shock absorber according to claim 8, characterized in that: The protective structure (5) comprises a protective cover (501) and a sealing ring (502); the protective cover (501) is fixedly connected to the connector (15); the sealing ring (502) is engaged on the outer side of the sealing plug (301); and the sealing ring (502) and the protective cover (501) are in contact with each other.

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