Inflation structure of automatic insert type shock absorber

Abstract

The invention belongs to the technical field of automobile shock absorbers, and particularly relates to an automatic insertion piece type shock absorber inflation structure which comprises an insertion piece and a plurality of clamping blocks. The clamping block is provided with a U-shaped groove and an inflation hole communicated with the U-shaped groove. An elastic telescopic part is arranged in the U-shaped groove, one end of the elastic telescopic part is fixed to the clamping block, the other end of the elastic telescopic part is provided with a guide part, a lifting part is slidably connected to the guide part, the top face of the lifting part is located above the guide part, and an adjusting air chamber is arranged between the lifting part and the guide part; the insertion piece is positioned on one side of the lifting part close to the basic shaft; when the clamping blocks are located at the limiting positions close to the base shaft, the multiple clamping blocks are sequentially sealed and attached in the circumferential direction of the base shaft to define a sealing sleeve, and an upper round hole and a lower round hole which are vertically through are formed in the sealing sleeve. The opportunity and stroke of up-down reciprocating motion of the inserting piece are controlled through the change of the air pressure difference between the inflation cavity and the adjusting air chamber, then the automatic inflation device replaces people to insert and pull out the inserting piece into and out of the shock absorber, automatic inflation operation of the shock absorber is achieved, and the efficiency and quality of inflation operation of the shock absorber are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile shock absorbers, and in particular relates to an automatic insert-type shock absorber inflation structure. Background Art

[0002] The shock absorber is an important component in the vehicle suspension system. It uses the flow of internal oil between the piston and the cylinder to generate damping to absorb and cushion the vibration during the vehicle's driving process, thereby improving the vehicle's driving comfort and stability. During the operation of the automobile shock absorber, the hydraulic oil inside it is prone to foaming (cavitation), resulting in the damping of the shock absorber and discontinuity, affecting the shock absorption effect. In order to solve this problem, the shock absorber is filled with low-pressure nitrogen in production to avoid the occurrence of hydraulic oil foaming during the operation of the shock absorber, thereby improving the shock absorption performance of the shock absorber.

[0003] At present, the inflation tooling widely used in shock absorber inflation operations generally includes a sealed container and an insert, and the sealed container has a connected inflation chamber and an inflation nozzle. When inflating, first manually insert the insert between the shock absorber piston rod and the oil seal of the oil seal to form an inflation channel between the two, and then put the sealed container on the outside of the shock absorber piston rod. The sealed container and the shock absorber seal cooperate to form a closed inflation chamber. The insert is located in the inflation chamber and the inflation chamber is connected to the inflation channel. When inflating, nitrogen enters the inflation chamber from the inflation nozzle and finally enters the shock absorber liquid storage cylinder through the inflation channel. When it is detected that the rebound force of the shock absorber piston rod reaches the preset value, remove the sealed container and the insert, and the shock absorber inflation is completed. The structure of the specific inflation tooling can refer to the inflation tooling of the shock absorber of the Chinese patent application number 200920308301.5, and can also refer to the shock absorber inflation device in the background technology of the Chinese patent application number 201220374287.0.

[0004] In actual production, the inserts in the above-mentioned inflation tooling are manually inserted between the piston rod of the shock absorber and the oil seal of the oil seal, which not only wastes manpower, but also makes the length and volume of the inserts inserted into the shock absorber different during multiple operations, which in turn leads to different air holding capacities of different shock absorber reservoirs. Even if the rebound force of the piston rods of different shock absorbers can be guaranteed to be the same before the inflation is completed, the amount of air in the shock absorber reservoir is not the same. When the inserts are pulled out, the rebound force deviation of the piston rods of different shock absorbers in the same batch is large, which not only affects the production quality of the shock absorber, but also affects the shock absorption performance of the vehicle. In addition, the manual operation rhythm is slow and the production efficiency is low. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an automatic insert-type shock absorber inflation structure to replace the manual insertion and extraction of the insert between the piston rod and the oil seal, thereby saving manpower and improving the shock absorber inflation efficiency; reducing the deviation of the depth of the insert inserted into different shock absorbers and improving the quality of the shock absorber.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an automatic insert-type shock absorber inflation structure, comprising an insert, and also comprising a plurality of clamping blocks uniformly distributed in the circumferential direction of a base shaft perpendicular to a horizontal plane, wherein the clamping blocks can reciprocate in a radial straight line along the radial direction of the base shaft; the clamping blocks are provided with a U-shaped groove with an opening toward the base shaft, and an outer wall of any of the clamping blocks is provided with an inflation hole connected to the U-shaped groove thereon; an elastic telescopic portion that can be radially telescopic along the base shaft is provided in any of the U-shaped grooves, and an end of the elastic telescopic portion away from the base shaft is fixed to the clamping block, and an end of the elastic telescopic portion close to the base shaft is a telescopic end and a guide portion is provided thereon, and a lifting portion that is slidably matched with the guide portion in an up-and-down direction is provided on the guide portion, and a top surface of the lifting portion is located above the guide portion and there is an adjusting air chamber between the two whose volume is compressed synchronously with the downward movement of the lifting portion; the lifting portion is located in the U-shaped groove and is spaced apart from the inner top wall of the clamping block; the insert is installed on the lifting portion and protrudes from the side wall of the clamping block close to the base shaft;

[0007] When the clamping block is located at the extreme position close to the base shaft, a plurality of the clamping blocks are sealed and fitted in sequence along the circumference of the base shaft to form a sealing sleeve, the top surface of the sealing sleeve has an upper circular hole that passes through the top and bottom, and the bottom surface of the sealing sleeve has a lower circular hole that passes through the top and bottom, and the upper circular hole and the lower circular hole are both coaxial with the base shaft.

[0008] Furthermore, two clamping blocks are provided.

[0009] Furthermore, the elastic telescopic part includes a spring whose axis is arranged radially along the base axis, one end of the spring is connected to the bottom wall of the U-shaped groove of the clamping block, and the other end of the spring is connected to the guide part; the spring is provided with multiple springs, and the multiple springs are evenly distributed in the up and down directions.

[0010] Furthermore, the elastic telescopic part is connected to the guide part through an adapter, and the adapter includes a vertical plate perpendicular to the horizontal plane and a support plate fixedly connected to the lower end of the vertical plate, and the support plate is parallel to the horizontal plane; the telescopic end of the elastic telescopic part is connected to the vertical plate, and the installation is above the support plate.

[0011] Furthermore, the bottom surface of the support plate fits with the inner bottom wall of the clamping block and the two are slidably matched along the radial direction of the base shaft.

[0012] Furthermore, the guide part includes a push rod perpendicular to the horizontal plane and a piston arranged at the upper end of the push rod, and the lifting part includes a sliding sleeve with a sealed upper end and an open lower end; the sliding sleeve is arranged on the outside of the piston and axially slides with the piston, the piston is sealed and cooperates with the inner wall of the sliding sleeve and forms the regulating air chamber with the inner wall of the sliding sleeve; the lower end of the push rod is connected to the telescopic end of the elastic telescopic part, and the insert is installed on the sliding sleeve.

[0013] Furthermore, the guide part includes a sliding sleeve with a sealed lower end and an open upper end, and the lifting part includes a push rod perpendicular to the horizontal plane and a piston arranged at the lower end of the push rod; the piston is located on the inner side of the sliding sleeve and axially slides with the sliding sleeve, and the piston is sealed with the inner wall of the sliding sleeve and forms the regulating air chamber with the inner wall of the sliding sleeve; the sliding sleeve is connected to the telescopic end of the elastic telescopic part, and the insert is installed on the upper end of the push rod.

[0014] Furthermore, the piston and the push rod are an integrally formed cylindrical structure.

[0015] Furthermore, it also includes an elastic reset member that can be extended and retracted in the up-down direction, wherein the upper end of the elastic reset member abuts against the lifting part, and the lower end of the elastic reset member abuts against the guide part.

[0016] Furthermore, the elastic return member is a return spring disposed in the regulating air chamber, and the axis of the return spring is arranged in the up-down direction;

[0017] The piston is provided with a guide blind hole connected with the regulating air chamber, the sliding sleeve is provided with a guide column coaxially arranged with the guide blind hole, the guide column is located in the regulating air chamber and its axial length is less than or equal to the hole depth of the guide blind hole; the return spring is located in the guide blind hole and sleeved on the outside of the guide column; one end of the return spring abuts against the guide column, and the other end of the return spring abuts against the bottom wall of the guide blind hole.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: providing an automatic insert-type shock absorber inflation structure, utilizing the change in the air pressure difference between the inflation chamber and the regulating air chamber to control the timing and stroke of the up and down reciprocating movement of the insert, thereby replacing the inserting and pulling out of the shock absorber by the present invention, realizing automatic inflation of the shock absorber, saving manpower, and improving the efficiency of the shock absorber inflation operation; by controlling the extreme value and maintenance time of the air pressure difference between the inflation chamber and the regulating air chamber, the pressure in the inflation chamber is made the same during multiple inflation processes, thereby making the downward pressure amplitude of the regulating air chamber the same, the downward pressure stroke of the lifting part the same, and the depth and volume of the insert inserted into the shock absorber the same during multiple inflation operations, reducing the deviation of the inflation amount of multiple shock absorbers and the rebound force of the piston rod, and improving the inflation quality of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the inflation end of the hydraulic cylinder;

[0020] Figure 2 is a schematic diagram of an axial cross-sectional structure of an embodiment of the inflatable structure of the present invention;

[0021] Figure 3 is a schematic diagram of an axial cross-sectional structure of another embodiment of the inflatable structure of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the inflatable structure of the present invention during inflation operation;

[0023] Figure 5 The enlarged structural diagram of the middle A part;

[0024] Figure numerals: 1-clamp; 11-inflating hole; 12-upper circular hole; 13-lower circular hole; 21-spring; 31-fixing part; 32-lifting part; 33-adjusting air chamber; 4-inflating cavity; 51-push rod; 52-piston; 53-sleeve; 61-vertical plate; 62-support plate; 71-elastic reset member; 72-guide blind hole; 73-guide column; 8-insert; 9-shock absorber; 91-piston rod; 92-liquid storage cylinder; 93-oil seal; 94-liquid storage cavity. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0026] As attached Figure 1-5As shown, an automatic insert-type shock absorber inflation structure comprises an insert 8, and also comprises a plurality of clamping blocks 1 uniformly distributed in the circumferential direction of a base shaft perpendicular to a horizontal plane, wherein the clamping blocks 1 can reciprocate in a radial straight line along the radial direction of the base shaft; the clamping blocks 1 are provided with a U-shaped groove opening toward the base shaft, and an inflation hole 11 connected to the U-shaped groove thereon is provided on the outer wall of any of the clamping blocks 1; an elastic telescopic portion 2 capable of radially extending and retracting along the base shaft is provided in any of the U-shaped grooves, and an end of the elastic telescopic portion 2 away from the base shaft is fixed to the clamping block 1, and an end of the elastic telescopic portion 2 close to the base shaft is a telescopic end and is provided with a guide portion 31, and the guide portion 31 is provided with a lifting portion slidably matched with the guide portion 31 in the up-down direction. The lowering portion 32, the top surface of the lifting portion 32 is located above the guide portion 31 and there is an adjusting air chamber 33 therebetween, the volume of which is compressed synchronously with the downward movement of the lifting portion 32; the lifting portion 32 is located in the U-shaped groove and is spaced apart from the inner top wall of the clamping block 1; the insert 8 is installed on the lifting portion 32 and protrudes out of the side wall of the clamping block 1 close to the base shaft; when the clamping block 1 is located at the extreme position close to the base shaft, a plurality of the clamping blocks 1 are sealed and fitted in sequence along the circumference of the base shaft to form a sealing sleeve, the top surface of the sealing sleeve has an upper circular hole 12 that passes through from top to bottom, the bottom surface of the sealing sleeve has a lower circular hole 13 that passes through from top to bottom, and the upper circular hole 12 and the lower circular hole 13 are both coaxial with the base shaft.

[0027] The base axis in the present invention is a virtual axis proposed for the convenience of explaining the structure and arrangement of multiple clamping blocks 1, and is not a physical structure. "Multiple" in the present invention refers to at least two. Generally, the clamping block 1 is driven to telescopically move along the radial direction of the base axis by a telescopic push rod structure, and the telescopic push rod can be an electric push rod, a pneumatic push rod or a hydraulic push rod. The inflation hole 13 on the inflation structure is connected to the gas tank for supplying nitrogen through an air pipe, and the connection between the inflation hole 13 and the gas tank is controlled by arranging an electromagnetic valve on the air pipe. The upper circular hole 12 is surrounded by the upper side wall of the multiple clamping blocks 1 close to the base axis, and the lower circular hole 13 is surrounded by the lower side wall of the multiple clamping blocks 1 close to the base axis. The insert 8 can adopt an existing wedge-shaped sheet structure.

[0028] Before the shock absorber is inflated, the clamp block 1 is located at the extreme position away from the base axis and the two adjacent clamp blocks 1 are arranged at intervals along the circumference of the base axis. The shock absorber 9 is fixedly set between the multiple clamp blocks 1 so that the axis of the shock absorber 9 is coaxial and collinear with the base axis of the inflatable structure, the piston rod 91 of the shock absorber 9 is located at the upper end of the shock absorber 9, the insert 8 is arranged at intervals above the oil seal 93 between the liquid storage cylinder 92 and the piston rod 91 of the shock absorber 9, and the lower end surface of the clamp block 1 is arranged at intervals below the upper end surface of the liquid storage cylinder 92. When the shock absorber is inflated, the clamp block 1 moves linearly along the radial direction of the shock absorber 9 to the direction close to the shock absorber 9. In this process, the clamp block 1 first drives the insert 8 installed thereon to abut against the side wall of the piston rod 91 of the shock absorber 9, and the clamp block 1 continues to move along the radial direction of the shock absorber 9 to the direction close to the shock absorber 9 so that the elastic expansion part 21 is elastically compressed by the clamp block 1 and the insert 8 until the multiple clamp blocks 1 move to the extreme position close to the axial direction of the shock absorber 9. At this time, the elastic compression part 2 generates a rebound force after being compressed to push the guide part 31 and the lifting part 32 so that the insert 8 is tightly against the piston rod 91, and the insert 8 and the piston rod 91 are tightly fitted. Multiple clamping blocks 1 form a sealing sleeve, and the hole wall of the upper circular hole 12 of the sealing sleeve is tightly fitted with the side wall of the piston rod 91 of the shock absorber 9, and the hole wall of the lower circular hole 12 of the sealing sleeve is tightly fitted with the outer wall of the liquid storage cylinder 92 of the shock absorber 9. The sealing sleeve, the piston rod 91 and the liquid storage cylinder 92 form a closed inflation chamber 4, and the inflation chamber 4 is formed by connecting the U-shaped grooves on multiple clamping blocks 1, and the inflation chamber 4 is connected to the inflation hole 13. Then, nitrogen is filled into the inflatable chamber 4 through the inflatable hole 13 to gradually increase the air pressure in the inflatable chamber 4. When the air pressure in the inflatable chamber 4 is greater than the air pressure value of the regulating air chamber 33, the gas between the top wall of the lifting part 32 in the inflatable chamber 4 and the top wall inside the clamping block 1 pushes the lifting part 32 to move downward and squeeze the regulating air chamber 33 downward. The lifting part 32 drives the insert 8 thereon to move downward synchronously so that the insert 8 is inserted between the piston rod 91 and the oil seal 93 of the shock absorber 9 to open the inflatable passage. The gas in the inflatable chamber 4 is filled into the liquid storage chamber 94 of the liquid storage cylinder 92 through the inflatable passage. After the inflatable is completed, the inflatable chamber 4 is stopped, the air pressure in the inflatable chamber 4 is gradually reduced, the regulating air chamber 33 is inflated, and the gas in the regulating air chamber 33 pushes the lifting part 32 to reset upward. In this process, the insert 8 moves upward synchronously with the lifting part 32 and escapes from the shock absorber 9. Finally, the clamp block 1 is reset, and the elastic telescopic portion 21 gradually rebounds until the clamp block 1 is reset and the inserting piece 8 is separated from the position of the piston rod 91 .

[0029] The inflation structure of the present invention utilizes the change of the air pressure difference between the inflation chamber 4 and the regulating air chamber 33 to control the timing and stroke of the up and down reciprocating movement of the insert 8, so that the insert 8 is automatically inserted into and pulled out of the shock absorber 9, and the automatic inflation operation of the liquid storage chamber 94 of the shock absorber 9 is realized, which saves manpower and improves the efficiency of the shock absorber inflation operation; by controlling the extreme value and maintenance time of the air pressure difference between the inflation chamber 4 and the regulating air chamber 33, the pressure in the inflation chamber 4 is made the same during multiple inflation processes, so that the downward pressure amplitude of the regulating air chamber 33 is the same, the downward pressure stroke of the lifting part 32 is the same, and the depth and volume of the insert 8 inserted into the shock absorber 9 are the same during multiple inflation operations, thereby reducing the deviation of the inflation amount of multiple shock absorbers 9 and the rebound force of the piston rod 91, and improving the inflation quality of the shock absorber 9.

[0030] When multiple clamping blocks 1 move along the radial direction of the base shaft to the extreme position close to the shock absorber 9, they cooperate with the piston rod 91 and the liquid storage cylinder 92 of the shock absorber 9 to form a closed inflation chamber 4. When multiple clamping blocks 1 move along the radial direction of the base shaft to the extreme position away from the shock absorber 9, the entire inflation structure is disengaged from the shock absorber 9. Two clamping blocks 1 can be provided, or more than two. Too many clamping blocks 1 will not only make the structure of the inflation structure complicated, increase the workload and difficulty of the production and assembly of the entire present invention, but also increase the number of joint seams of the sealing sleeve, and increase the risk of air leakage in the inflation chamber 4 during inflation. Preferably, two clamping blocks 1 are provided; when the clamping blocks 1 are located at the extreme position close to the base shaft, the two clamping blocks 1 are arranged adjacent to each other and sealed and spliced ​​to form a sealing sleeve, which has a simple structure, is convenient for production and assembly, reduces the number of joint seams of the sealing sleeve, and improves the air tightness of the inflation chamber 4. The inflation hole 11 on the clamp block 1 is used to inflate air into the inner inflation cavity 4 , and the inflation hole 11 can be set at any position on the top wall, bottom wall or side wall of the clamp block 1 .

[0031] The elastic telescopic part 21 is used to generate a rebound force when compressed by the clamp block 1 and the insert 8 to push the guide part 31, the lifting part 32 and the insert 8, so that the insert 8 is tightly against the side wall of the piston rod 91, ensuring that the lower end of the insert 8 is aligned with the joint between the piston rod 91 and the oil seal 93, so as to facilitate the subsequent insertion of the insert 8 into the joint between the piston rod 91 and the oil seal 93 along the side wall of the piston rod 91. The elastic telescopic part 21 can be a rubber block structure made of elastic rubber such as polyurethane, natural rubber, nitrile rubber, etc., or a steel spring structure, or a combination structure of the above rubber block and spring. Preferably, the elastic telescopic part 2 includes a spring whose axis is arranged radially along the base shaft, one end of the spring is connected to the bottom wall of the U-shaped groove of the clamp block 1, and the other end of the spring is connected to the guide part 31. Compared with the elastic rubber structure, the spring is not easy to age and has good wear resistance, a longer service life, and is also convenient to purchase at a low cost. As a further preference, the spring is provided with a plurality of springs, and the plurality of springs are evenly distributed in the up and down directions, so as to further improve the stiffness of the elastic telescopic portion 21, reduce the degree of downward bending deformation of the spring under the action of gravity of the guide portion 31, the lifting portion 32 and the insert 8, and ensure the position accuracy of the insert 8.

[0032] The elastic telescopic part 21 can be directly connected to the guide part 31 or connected through an adapter. Specifically, the elastic telescopic part 2 is connected to the guide part 31 through an adapter, and the adapter includes a vertical plate 61 perpendicular to the horizontal plane and a support plate 62 fixedly connected to the lower end of the vertical plate 61, and the support plate 62 is parallel to the horizontal plane; the telescopic end of the elastic telescopic part 2 is connected to the vertical plate 61, and the installation is above the support plate 62. The support plate 62 and the inner bottom wall of the clamping block 1 can be arranged at intervals or in contact. As a further preference, the bottom surface of the support plate 62 fits the inner bottom wall of the clamping block 1 and the two slide in radial direction of the base axis. The inner bottom wall of the clamping block 1 supports the support plate 62 and the guide part 31 and other structures thereon, so as to prevent the elastic telescopic part 21 from being bent and deformed by the gravity of the guide part 31 and other structures, and further ensure that the initial height position of the guide part 31, the lifting part 32 and the insert 8 is fixed and unchanged, and ensure that the insert 8 is inserted into the shock absorber 9 at the same depth.

[0033] The guide part 31 is used to install the lifting part 32 on the telescopic end of the elastic telescopic part 21 so that the elastic telescopic part 21 drives the lifting part 32 and the insert to move synchronously; the lifting part 32 is used to install the insert 8 and drive the insert 8 to move synchronously up and down. The regulating air chamber 33 between the guide part 31 and the lifting part 32 is filled with gas. The timing and stroke of the lifting and lowering movement of the lifting part 33 are controlled by controlling the air pressure difference between the regulating air chamber 33 and the air-filled cavity 4 outside it, thereby realizing the control of the depth of the insert 8 inserted into the shock absorber 9. The structures and arrangements of the guide part 31, the lifting part 32 and the regulating air chamber 33 all have multiple embodiments, and the specific embodiments are as follows:

[0034] Embodiment 1: The guide portion 31 includes a push rod 51 perpendicular to the horizontal plane and a piston 52 arranged at the upper end of the push rod 51; the lifting portion 32 includes a sleeve 53 with a sealed upper end and an open lower end; the sleeve 53 is sleeved on the outer side of the piston 52 and axially slides with the side wall of the piston 52; the piston 52 seals with the inner side wall of the sleeve 53 and forms the regulating air chamber 33 with the inner wall of the sleeve 53; the lower end of the push rod 51 is connected to the telescopic end of the elastic telescopic portion 2, and the insert 8 is installed on the sleeve 53. During the inflation operation, when the air pressure of the regulating air chamber 33 is less than the air pressure of the inflation chamber 4 outside it, the gas in the inflation chamber 4 pushes the sleeve 53 to drive the insert 8 to move downward synchronously; otherwise, the sleeve 53 drives the insert 8 to move upward synchronously.

[0035] Embodiment 2: The guide portion 31 includes a sleeve 53 with a sealed lower end and an open upper end; the lifting portion 32 includes a push rod 51 perpendicular to the horizontal plane and a piston 52 arranged at the lower end of the push rod 51; the piston 52 is located inside the sleeve 53 and axially slides with the sleeve 53; the piston 52 seals with the inner wall of the sleeve 53 and forms the regulating air chamber 33 with the inner wall of the sleeve 53; the sleeve 53 is connected to the telescopic end of the elastic telescopic portion 2, and the insert 8 is installed at the upper end of the push rod 51. During the inflation operation, when the air pressure of the regulating air chamber 33 is less than the air pressure of the inflation chamber 4 outside it, the gas in the inflation chamber 4 pushes the piston 52 to move downward, and the piston 52 drives the push rod 51 and the insert 8 thereon to move downward synchronously; otherwise, the piston 52 drives the insert 8 to move upward synchronously.

[0036] For the convenience of processing, the piston 52 and the push rod 51 in the above embodiment are generally cylindrical structures, and the diameters of the two can be the same or different; they can be an integral structure, or they can be independent structures welded or connected together by bolts. Preferably, the piston 52 and the push rod 51 are an integral cylindrical structure, which has a simple structure and is easy to process and manufacture.

[0037] Preferably, it also includes an elastic reset member 71 that is telescopic in the up-down direction, the upper end of the elastic reset member 71 abuts against the lifting part 32, and the lower end of the elastic reset member 71 abuts against the guide part 31. When the lifting part 32 moves downward, the elastic reset member 71 is compressed downward, and the elastic reset member 71 can avoid the rigid collision between the piston 52 and the sliding sleeve 53; after the shock absorber 9 is inflated, the air pressure in the inflation chamber 4 gradually decreases so that the pressure difference between the regulating air chamber 33 and the inflation chamber 4 disappears, and the elastic reset member 71 rebounds and pushes the lifting part 32 upward so that the lifting part 32 drives the plug 8 to quickly reset, and then the plug 8 is quickly pulled out of the shock absorber 8, thereby improving the efficiency of pulling out the plug 8 and accelerating the inflation rhythm of the shock absorber.

[0038] The elastic reset member 71 can also be arranged outside the regulating air chamber 33, or inside the regulating air chamber 33. The elastic reset member 71 can be an elastic rubber member, a spring, or a combination of the two. As a further preference, the elastic reset member 71 is a reset spring arranged in the regulating air chamber 33, and the axis of the reset spring is arranged in the up-down direction, which not only saves installation space, but also has low cost and is easy to purchase compared to the elastic rubber member. When the reset spring is compressed, bending deformation may occur or even cause it to fail. As a further preference, the piston 52 is provided with a guide blind hole 72 connected to the regulating air chamber 33, and the sliding sleeve 53 is provided with a guide column 73 coaxially arranged with the guide blind hole 72, the guide column 73 is located in the regulating air chamber 33 and its axial length is less than or equal to the hole depth of the guide blind hole 72; the reset spring is located in the guide blind hole 72 and is sleeved on the outside of the guide column 73; one end of the reset spring abuts on the guide column 73, and the other end of the reset spring abuts on the bottom wall of the guide blind hole 72. When the lifting part 32 is at the upper limit position, the guide post 73 is located outside the guide blind hole 72; when the lifting part 32 moves to the lower limit position, the guide post 73 is located inside the guide blind hole. The reset spring and the guide blind hole 72 are generally clearance-matched, and the reset spring can move telescopically in the guide blind hole 72. The guide blind hole 72 and the guide post 73 are used to radially position the reset spring and make the reset spring always move telescopically along its axial direction to avoid bending and deformation after being compressed, resulting in scrapping and damage.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic insert-type shock absorber inflation structure, comprising an insert (8), characterized in that: It also comprises a plurality of clamping blocks (1) uniformly distributed along the circumference of the base shaft perpendicular to the horizontal plane, wherein the clamping blocks (1) can reciprocate in a radial straight line along the base shaft; the clamping blocks (1) are provided with a U-shaped groove opening toward the base shaft, and an air filling hole (11) connected to the U-shaped groove on the outer wall of any clamping block (1); an elastic telescopic portion (2) capable of radially telescoping along the base shaft is provided in any of the U-shaped grooves, and the elastic telescopic portion (2) is fixed to the clamping block (1) at one end away from the base shaft, and the elastic telescopic portion (2) is close to the base shaft. One end of the guide (31) is a telescopic end and is provided with a guide portion (31); the guide portion (31) is provided with a lifting portion (32) that is slidably matched with the guide portion (31) in the up-down direction; the lifting portion (32) is located above the guide portion (31) and there is an adjusting air chamber (33) between the two that is compressed in volume synchronously with the downward movement of the lifting portion (32); the lifting portion (32) is located in the U-shaped groove and is spaced apart from the inner top wall of the clamping block (1); the insert (8) is mounted on the lifting portion (32) and protrudes from the side wall of the clamping block (1) close to the base shaft; When the clamping block (1) is located at the extreme position close to the base shaft, a plurality of the clamping blocks (1) are sealed and fitted in sequence along the circumference of the base shaft to form a sealing sleeve, the top surface of the sealing sleeve has an upper circular hole (12) which passes through the top and bottom, and the bottom surface of the sealing sleeve has a lower circular hole (13) which passes through the top and bottom, and the upper circular hole (12) and the lower circular hole (13) are both coaxial with the base shaft.

2. The automatic insert-type shock absorber inflation structure according to claim 1, characterized in that: Two clamping blocks (1) are provided.

3. The automatic insert-type shock absorber inflation structure according to claim 2, characterized in that: The elastic telescopic portion (2) comprises a spring whose axis is arranged radially along the base axis, one end of the spring is connected to the bottom wall of the U-shaped groove of the clamping block (1), and the other end of the spring is connected to the guide portion (31); a plurality of springs are provided, and the plurality of springs are evenly distributed in the up and down directions.

4. The automatic insert-type shock absorber inflation structure according to claim 3 is characterized in that: The elastic telescopic part (2) is connected to the guide part (31) via a transition piece, the transition piece comprises a vertical plate (61) perpendicular to a horizontal plane and a support plate (62) fixedly connected to the lower end of the vertical plate (61), the support plate (62) being parallel to the horizontal plane; the telescopic end of the elastic telescopic part (2) is connected to the vertical plate (61), and the mounting is above the support plate (62).

5. The automatic insert-type shock absorber inflation structure according to claim 4, characterized in that: The bottom surface of the support plate (62) fits the inner bottom wall of the clamping block (1) and the two are slidably matched along the radial direction of the base shaft.

6. The automatic insert-type shock absorber inflation structure according to claim 1, characterized in that: The guide portion (31) includes a push rod (51) perpendicular to a horizontal plane and a piston (52) arranged at the upper end of the push rod (51); the lifting portion (32) includes a sleeve (53) with a sealed upper end and an open lower end; the sleeve (53) is sleeved on the outer side of the piston (52) and axially slides with the piston (52); the piston (52) is sealed with the inner wall of the sleeve (53) and forms the regulating air chamber (33) with the inner wall of the sleeve (53); the lower end of the push rod (51) is connected to the telescopic end of the elastic telescopic portion (2), and the insert (8) is installed on the sleeve (53).

7. The automatic insert-type shock absorber inflation structure according to claim 1, characterized in that: The guide portion (31) includes a sliding sleeve (53) with a sealed lower end and an open upper end, and the lifting portion (32) includes a push rod (51) perpendicular to a horizontal plane and a piston (52) arranged at the lower end of the push rod (51); the piston (52) is located on the inner side of the sliding sleeve (53) and axially slides with the sliding sleeve (53); the piston (52) is sealed with the inner wall of the sliding sleeve (53) and forms the regulating air chamber (33) with the inner wall of the sliding sleeve (53); the sliding sleeve (53) is connected to the telescopic end of the elastic telescopic portion (2), and the insert (8) is installed on the upper end of the push rod (51).

8. The automatic insert-type shock absorber inflation structure according to claim 6 or 7, characterized in that: The piston (52) and the push rod (51) are an integrally formed cylindrical structure.

9. The automatic insert-type shock absorber inflation structure according to claim 6 or 7, characterized in that: It also includes an elastic reset member (71) that can be extended and retracted in the up-down direction, wherein the upper end of the elastic reset member (71) abuts against the lifting portion (32), and the lower end of the elastic reset member (71) abuts against the guide portion (31).

10. The automatic insert-type shock absorber inflation structure according to claim 9, characterized in that: The elastic return element (71) is a return spring disposed in the regulating air chamber (33), and the axis of the return spring is arranged in the up-down direction; The piston (52) is provided with a guide blind hole (72) which is in communication with the regulating air chamber (33); the sliding sleeve (53) is provided with a guide column (73) which is coaxially arranged with the guide blind hole (72); the guide column (73) is located in the regulating air chamber (33) and its axial length is less than or equal to the hole depth of the guide blind hole (72); the return spring is located in the guide blind hole (72) and is sleeved on the outside of the guide column (73); one end of the return spring abuts against the guide column (73), and the other end of the return spring abuts against the bottom wall of the guide blind hole (72).

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