TWM608375U - Suspension type shock absorber structure - Google Patents

Abstract

This creation relates to a suspension type shock-absorbing structure, which includes: a cylinder outer tube, which includes a first variable compression chamber; a piston rod, which can be telescopically connected with the cylinder outer tube in an axial direction; A connecting rod is arranged on the outer tube of the cylinder, the connecting rod includes a set of connecting parts and a radially convex limiting part, the connecting part is detachably arranged on the outer tube of the cylinder; and a piston, which can The piston is movably arranged on the extension rod, the piston is arranged between the cylinder outer tube and the piston mandrel, the piston and the limiting portion interfere with each other in the axial direction, and one side of the piston is co-constructed with the cylinder outer tube For the first variable compression air chamber, the limiting portion is located on the opposite side of the piston corresponding to the first variable compression air chamber.

Description

Suspension type shock absorber structure

This creation is about a suspension type shock-absorbing structure.

The existing inverted fork type front fork is provided with a hollow front fork tube that can be longitudinally extended and retractable on the two opposite sides of the front wheel, and the bottom end is provided at the opposite ends of the front wheel axis, and a connection is provided at the top of the front fork tube. Waiting for the top of the front fork pipe to make the front fork pipes are parallel-limiting shoulder covers, the upper part of the shoulder cover is connected with a stand pipe which can be interlocked by a control handle and can pass through the main frame around its own axis.

The front fork tubes are hollow to install shock-absorbing springs, hydraulic damping and other devices in the internal space, and the inner and outer tubes that can slide linearly in the longitudinal direction can be used to buffer the bumpy road. Vibration is used for the purpose of increasing riding comfort. However, the structure of this inverted fork type front fork is more complicated and it consists of many components. It really needs to be improved. For example: Taiwan New Patent No. M280340 for vehicle front fork avoidance The seismic structure is improved.

Therefore, it is necessary to provide a novel and progressive suspension type shock-absorbing structure to solve the above-mentioned problems.

The main purpose of this creation is to provide a suspension type shock-absorbing structure, which has the advantages of simplifying the structure, good airtightness, and durability, and the movable stroke of a piston can be adjusted.

In order to achieve the above-mentioned purpose, the present invention provides a suspension type shock-absorbing structure, which includes: a cylinder outer tube, which includes a first variable compression chamber; a piston plunger, and the cylinder outer tube can be along an axial direction Telescopically connected; a connecting rod, which is arranged on the cylinder outer tube, the connecting rod includes a set of connecting parts and a radially convex limiting part, the assembly part is detachably arranged on the cylinder outer tube; and A piston is movably arranged on the connecting rod, the piston is arranged between the cylinder outer tube and the piston mandrel, the piston and the limiting part interfere with each other in the axial direction, and one side of the piston and the cylinder The outer tube co-constructs the first variable compression air chamber, and the limiting portion is located on the opposite side of the piston corresponding to the first variable compression air chamber.

The following examples are only used to illustrate the possible implementation of this creation, but they are not intended to limit the scope of the creation to be protected, and we will explain it first.

Please refer to Figures 1-9, which show a first preferred embodiment of this creation. The suspension type shock-absorbing structure 1 of this creation includes a cylinder outer tube 10, a piston rod 20, a connecting rod 30 and a piston. 40.

The cylinder outer tube 10 includes a first variable compression chamber 11; the piston rod 20 and the cylinder outer tube 10 can be telescopically connected along an axial direction 2; the connecting rod 30 is arranged on the cylinder outer tube 10, the The extension rod 30 includes a set of connecting portions 31 and a radially convex limiting portion 32. The assembly portion 31 is detachably provided on the cylinder outer tube 10; and the piston 40 is movably provided on the extension rod 30 , The piston 40 is disposed between the cylinder outer tube 10 and the piston rod 20, the piston 40 and the limiting portion 32 interfere with each other in the axial direction 2, and one side of the piston 40 and the cylinder outer tube 10 The first variable compression air chamber 11 is co-constructed, and the limiting portion 32 is located on the opposite side of the piston 40 corresponding to the first variable compression air chamber 11. In this embodiment, the suspension type shock-absorbing structure 1 further includes an upper cover 50, which is detachably disposed at one end of the cylinder outer tube 10 and closes the first variable compression air chamber 11 , The post 30 and the upper cover 50 are detachably screwed to each other, thereby providing the advantages of a simplified structure, good air tightness, and durability. Furthermore, the extension rod 30 can be directly disassembled and assembled to replace different sizes of the extension rod 30' (as shown in FIG. 5) to adjust the distance between the piston 40 and the upper cover 50 to change the position of the piston 40 The movable stroke in the first variable compression chamber 11.

The suspension type shock-absorbing structure 1 further includes an elastic member 60, the elastic member 60 is a buffer compression spring (compression spring), and the elastic member 60 is disposed between the limiting portion 32 and the piston 40. The piston rod 20 is an inner tube and abuts against the piston 40, the inner tube is sleeved with the connecting rod 30, and the elastic member 60 is located in the inner tube, so the structure is simple, easy to install, and the piston rod 20 and The cylinder outer tube 10 can stably expand and contract without interfering with the elastic member 60.

The post 30 further includes a shaft portion 33. The limiting portion 32 is radially detachably detachably (for example, screwed to each other) and protruding from the shaft portion 33. The limiting portion 32 is a cushion, which can replace the limiting portion. 32. If the limiting portion 32 is replaced with a different size or different degree of cushioning, the limiting portion 32 is also used to support and limit the elastic member 60 and the piston 40.

The piston 40 further includes an oil seal ring 41 that abuts and seals the peripheral wall of the post 30 to block the passage of the gas in the first variable compression chamber 11 and has a better airtight effect. The suspension type shock-absorbing structure 1 further includes an oil seal cover portion 42 provided on the piston 40, and the oil seal cover portion 42 and the oil seal ring 41 interfere with each other in the axial direction 2 to improve the air tightness effect. In this embodiment, the piston 40 is provided with a through hole 43, an inner peripheral wall 44 forming the through hole 43, and an inner ring groove 45 provided on the inner peripheral wall 44 and opening toward the through hole 43, and the oil seal ring 41 The ring abuts and seals between the peripheral wall of the post 30 and the inner ring groove 45, so that the sealing effect is good and the oil seal ring 41 can be confined in the inner ring groove 45.

The piston 40 includes a plurality of airtight rings 70, each of the airtight rings 70 is a V-shaped ring or a Y-shaped ring, each of the airtight rings 70 includes an inner ring wall 71 and an outer ring wall 72, the inner ring wall 71 and the outer ring wall 72 are connected to each other in a V shape, the outer ring wall 72 circumscribes the cylinder outer tube 10, each of the airtight rings 70 further includes a compression space 73, the inner ring wall 71 and the outer ring wall 72 constitutes the compression space 73, and the outer ring wall 72 can swing and reset toward the compression space 73 in the direction of the inner ring wall 71 to achieve an airtight effect and allow the piston 40 to move smoothly. The piston 40 further includes a main body 46 and a plurality of outer ring grooves 47 disposed on the outer periphery of the main body 46. The plurality of airtight rings 70 are respectively disposed on one of the outer ring grooves 47. The number of the plurality of airtight rings 70 can be determined according to requirements. Adjusted, the inner ring wall 71 of each of the airtight rings 70 abuts against the peripheral wall of the main body 46 and has a high air density, which provides the piston 40 to block gas from passing through the piston from the first variable compression chamber 11 when moving 40 is between the cylinder outer tube 10.

In this embodiment, the main body 46 includes two mating side piston units 461. The outer circumference of the two side piston units 461 forms the plurality of outer ring grooves 47, and each of the airtight rings 70 is disposed in one of the outer ring grooves 47. . The two side piston units 461 jointly constitute the through hole 43, the inner peripheral wall 44, and the inner ring groove 45, the post 30 passes through the through hole 43, and each of the side piston units 461 integrally protrudes toward the through hole. The flange 421 of the two-side piston unit 461 constitutes the oil seal cover 42, and the flange 421 of each side piston unit 461 interferes with the oil seal ring 41 in the axial direction 2 to achieve the The position of the oil seal ring 41 has a better sealing effect. In other embodiments, the oil seal cover and the piston may also be a two-piece design.

The suspension type shock-absorbing structure 1 further includes a lower cover 90, the lower cover 90 sleeves the piston rod 20 and is assembled to the cylinder outer tube 10, and the lower cover 90 can seal the piston rod 20 and The gap between the cylinder outer tube 10.

The connecting rod 30 is provided with an air filling portion 34 which includes an exhaust port 35 which communicates with the first variable compression air chamber 11 and an outside. The suspension type shock-absorbing structure 1 further includes an air filling assembly 80, and the air filling assembly 80 includes an air pump 81. The air pump 81 is disposed on the connecting rod 30 and communicates with the exhaust port 35. The suspension type shock-absorbing structure 1 further includes an upper fixing ring 82, the upper cover 50 is arranged at one end of the cylinder outer tube 10 and closes the first variable compression chamber 11, and the upper fixing ring 82 is provided with a connection Hole 821, the upper fixing ring 82 is detachably provided on the upper cover 50. In this embodiment, the upper fixing ring 82 and the upper cover 50 are screwed to each other to facilitate disassembly and assembly. The air pump 81 Set between the upper fixing ring 82 and the upper cover 50, the upper fixing ring 82 can be detached from the upper cover 50 to expose the air pump 81 so that the gas can be filled into the air through the exhaust port 35 The first variable compression air chamber 11 changes the air pressure in the first variable compression air chamber 11 to adjust the degree of shock absorption.

In use, the first variable compression chamber 11 is filled with high-pressure gas, such as nitrogen, and the cylinder outer tube 10 and the piston rod 20 are opened by the high-pressure gas, so that the piston 40 is pressed against the elastic The component 60 uses the high-pressure gas to form an air spring with a specific compression rate to replace the traditional spring to have the effect of shock absorption and damping. The suspension type shock-absorbing structure 1 of this invention can be installed on the front fork of the front wheel of a bicycle or a locomotive. When the bicycle or the locomotive is driving on a sloped road section, the instantaneous reaction force on the road surface will be applied to the front wheel. Make the cylinder outer tube 10 and the piston mandrel 20 compress each other, and allow the piston mandrel 20 to push the piston 40 toward the first variable compression chamber 11 to compress the inside of the first variable compression chamber 11 The high-pressure gas is far away from the elastic member 60, and the high-pressure gas accumulates a restoring elastic force at the same time. When the instantaneous reaction force disappears, the restoring elastic force of the high-pressure gas is applied to the piston 40, allowing the piston rod 20 to expand and The piston 40 presses against the elastic member 60 to restore the bicycle or the motorcycle to the initial position. The elastic member 60 can provide a reverse buffering force when the piston 40 is excessively pressed in the direction of the piston rod 20 , This loop is repeated to provide a comfortable ride on the bicycle or motorcycle. In use, there may be two front forks of the suspension type shock-absorbing structure 1 connected to the front wheels of the bicycle or motorcycle.

Please refer to FIG. 10, which shows a second preferred embodiment. The inner tube includes a second variable compression air chamber 21. The second variable compression air chamber 21 is located at the piston 40' and the limiting portion 32. 'In between, the second variable compression chamber 21 can be used as an air spring. When the piston 40' moves toward the second variable compression chamber 21 to compress gas, the second variable compression chamber 21 can provide The piston 40' has a reverse buffer force; the piston 40' and the limiting portion 32' are respectively provided with a sealing ring 100 that abuts and seals on the inner wall of the inner tube, each of the sealing rings 100 can be O-shaped Rings, V-rings, Y-rings, or other seals that can block the passage of gas to achieve an air-tight effect to prevent the gas in the second variable compression chamber 21 from leaking.

Please refer to FIG. 11, which shows a third preferred embodiment. At least two of the compression spaces 73 of the airtight ring 70 are open to two different sides, so that the piston 40 can block the first variable when moving up and down. The gas between the compressed air chamber 11 and the second variable compressed air chamber 21 passes between the piston 40 and the cylinder outer tube 10 to provide a high air tightness effect.

1: Suspension type shock absorber structure 2: axial 10: Cylinder outer tube 11: The first variable compression chamber 20: Piston mandrel 21: The second variable compression chamber 30,30’: Extension 31: Assembly Department 32,32’: Limiting part 33: Shaft 34: Inflation Department 35: exhaust port 40,40’: Piston 41: oil seal ring 42: Oil seal cover 421: Flange 43: Through hole 44: inner wall 45: inner ring groove 46: main body 461: Side Piston Unit 47: Outer Ring Ditch 50: Upper cover 60: Elastic 70: airtight ring 71: inner ring wall 72: outer ring wall 73: Compressed space 80: Gas filling components 81: cheer 82: Upper fixing ring 821: connecting hole 90: lower cover 100: sealing ring

Figure 1 is a perspective view of a first preferred embodiment of the creation. Figure 2 is an exploded view of a first preferred embodiment of the creation. Figure 3 is a cross-sectional view of a first preferred embodiment of the creation. Figure 4 is an action diagram of creating a first preferred embodiment. Figure 5 is a diagram of another use state of creating a first preferred embodiment. Fig. 6 is a partial enlarged view of the B range in Fig. 3. Fig. 7 is an exploded view of the piston created in a first preferred embodiment. Fig. 8 is an exploded view of an upper fixing ring, an upper cover and a pump nozzle of a first preferred embodiment of the creation. Fig. 9 is a partial enlarged view of the range A in Fig. 3. Figure 10 is a partial cross-sectional view of a second preferred embodiment of the creation. Figure 11 is a partial cross-sectional view of a third preferred embodiment of the creation.

1: Suspension type shock absorber structure

10: Cylinder outer tube

20: Piston mandrel

82: Upper fixing ring

821: connecting hole

Claims (10)

A suspension type shock-absorbing structure, including: A cylinder outer tube, including a first variable compression chamber; A piston mandrel can be telescopically connected with the outer tube of the cylinder along an axial direction; A connecting rod arranged on the outer tube of the cylinder, including a set of connecting portions and a radially convex limiting portion, the connecting portion is detachably arranged on the outer tube of the cylinder; and A piston is movably arranged on the connecting rod, the piston is arranged between the cylinder outer tube and the piston mandrel, the piston and the limiting part interfere with each other in the axial direction, and one side of the piston and the cylinder The outer tube co-constructs the first variable compression air chamber, and the limiting portion is located on the opposite side of the piston corresponding to the first variable compression air chamber. The suspension type shock-absorbing structure according to claim 1 further includes an elastic member provided between the limiting portion and the piston. The suspension type shock-absorbing structure according to claim 1, wherein the piston rod is an inner tube, and the inner tube includes a second variable compression air chamber, and the second variable compression air chamber is located between the piston and the Between the limit parts. The suspension type shock-absorbing structure according to claim 3, wherein the piston and the limiting portion are respectively provided with a sealing ring that abuts and seals on the inner wall of the inner tube. The suspension type shock-absorbing structure according to claim 3, wherein the piston includes a plurality of airtight rings, each of the airtight rings includes an inner ring wall, an outer ring wall and a compression space, and the outer ring wall abuts against The peripheral wall of the outer tube of the cylinder, the inner ring wall and the outer ring wall constitute the compression space. The suspension type shock-absorbing structure according to claim 5, wherein the compression space of at least two of the airtight rings is open to two different sides. The suspension type shock-absorbing structure according to any one of claims 1 to 6, wherein the post is provided with an air filling part, the air filling part includes an exhaust port, and the exhaust port communicates with the first variable Compressed air chamber and an outside. The suspension type shock-absorbing structure according to claim 7 further includes an air filling assembly, the air filling assembly includes an air pump, and the air pump is arranged on the connecting rod and communicated with the exhaust port. The suspension type shock-absorbing structure according to claim 8, further comprising an upper fixing ring and an upper cover, the upper cover being arranged at one end of the cylinder outer tube and closing the variable compression chamber, and the upper fixing ring The ring is provided with a connecting hole, the upper fixing ring is detachably arranged on the upper cover, and the air pump is arranged between the upper fixing ring and the upper cover. The suspension type shock-absorbing structure according to claim 2, wherein the piston rod is an inner tube, the inner tube is sleeved with the extension rod and abuts against the piston, and the elastic member is located in the inner tube; the extension rod It also includes a shaft, and the limiting portion is radially detachably protruding from the shaft; the limiting portion is a cushion; the piston includes a plurality of airtight rings, and each of the airtight rings includes an inner ring wall and a The outer ring wall, the inner ring wall and the outer ring wall are connected to each other in a V shape, and the outer ring wall abuts against the cylinder outer tube; the piston further includes a main body and a plurality of outer ring grooves arranged on the outer periphery of the main body, the A plurality of airtight rings are respectively arranged in one of the outer ring grooves, and the inner ring wall of each airtight ring abuts against the peripheral wall of the main body; the main body includes two butted side piston units, and the outer peripheral side of the two side piston units constitutes The plurality of outer ring grooves, each of the airtight rings is arranged in one of the outer ring grooves; the piston is provided with a through hole, an inner peripheral wall forming the through hole, and an inner peripheral wall provided on the inner peripheral wall and open toward the through hole An inner ring groove, the two-side piston unit co-constructs the through hole, the inner peripheral wall and the inner ring groove, the post passes through the through hole, the piston further includes an oil seal ring arranged in the inner ring groove, the oil seal The ring ring abuts and seals between the peripheral wall of the extension rod and the inner ring groove, each of the side piston units integrally protrudes a flange toward the through hole, and the flange of each side piston unit contacts the oil seal in the axial direction. The rings interfere with each other; the post is provided with an inflating part, the inflating part includes an exhaust port, the exhaust port is connected to the first variable compression chamber and an outside; the suspension type shock-absorbing structure further includes a An air filling assembly, the air filling assembly includes an air pump, the air pump is arranged on the connecting rod and communicated with the exhaust port; the suspension type shock-absorbing structure further includes an upper fixing ring and an upper cover, the The upper cover is arranged at one end of the outer tube of the cylinder and closes the first variable compression air chamber, the upper fixing ring is provided with a connecting hole, the upper fixing ring is detachably arranged on the upper cover, and the air pump is arranged at Between the upper fixing ring and the upper cover; the suspension type shock-absorbing structure further includes a lower cover, and the lower cover is sleeved with the piston mandrel and assembled with the outer tube of the cylinder.

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