High-low speed compression damping structure of shock absorber

Abstract

The high-low speed compression damping structure is characterized in that the end part of a fork pipe is connected with a fixed seat, the end part of the fixed seat is in threaded connection with the end part of an inner oil pipe, and the fixed seat is provided with an oil passing port close to the inner oil pipe; a compression main piston is sleeved with the inner end of the inner oil pipe, a high-speed compression adjusting shaft core is sleeved with the compression main piston in a sliding mode, the high-speed compression adjusting shaft core is hollow, a low-speed compression oil control shaft core is sleeved with an inner thread in the high-speed compression adjusting shaft core, and a low-speed oil port is formed in the position, close to the low-speed compression oil control shaft core, of the high-speed compression adjusting shaft core. The end, away from the inner oil pipe, of the low-speed compression oil control shaft core is connected with a low-speed compression adjusting shaft core used for controlling the low-speed compression oil control shaft core, and the low-speed compression adjusting shaft core is rotationally connected with the high-speed compression adjusting shaft core in a sleeved mode. Compared with the prior art, the high-low speed compression damping structure of the shock absorber has the advantage of being capable of adjusting high-low speed damping.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motorcycle and electric bicycle damping technical field, specifically point to shock absorber high low speed compression damping structure. BACKGROUND

[0002] At present, with the wide use of electric bicycles, the performance requirement is higher and higher, among them, in order to prevent the electric bicycle from bumping in the process of driving, the electric bicycle is usually equipped with damper structure, including spring shock absorber and hydraulic shock absorber, in the hydraulic shock absorber, the handle tube and the piston rod are a valve system, in the use process, the handle tube moves up and down, and the oil in the aluminum cylinder generates damping force through the valve system.

[0003] But the DH speed drop bicycle / electric two-wheel off-road vehicle front fork damping on the market is mostly traditional low-speed compression damping adjustable, and its function range is not obvious, and there is no high-speed compression damping adjustment. INVENTION CONTENTS

[0004] (I) problem to be solved

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects, and provide a shock absorber high low speed compression damping structure that can be adjusted at high and low speeds.

[0006] (II) technical scheme

[0007] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a shock absorber high low speed compression damping structure, comprising an outer pipe and a fork pipe sleeved in the outer pipe, a main shaft is arranged in the outer pipe, an inner oil pipe is arranged in the fork pipe, a recovery main piston is sleeved in the end of the main shaft in the inner oil pipe, and hydraulic oil is filled in the inner oil pipe;

[0008] The end of the fork pipe is connected with a fixing seat, the end of the fixing seat is threadedly connected with the end of the inner oil pipe, and an oil outlet is formed in the fixing seat close to the inner oil pipe;

[0009] A compression main piston is sleeved at the end of the inner oil pipe, a high-speed compression adjustment shaft core is slidably sleeved in the compression main piston, one-way channels are symmetrically arranged on the two sides of the compression main piston, and damping structures matched with the one-way channels are arranged on the two ends of the high-speed compression adjustment shaft core;

[0010] The high-speed compression adjustment shaft core is hollow, a low-speed compression control oil shaft core is threadedly sleeved in the high-speed compression adjustment shaft core, a low-speed oil outlet is formed in the high-speed compression adjustment shaft core close to the low-speed compression control oil shaft core, a low-speed compression adjustment shaft core for controlling the low-speed compression control oil shaft core is connected to the end of the low-speed compression control oil shaft core away from the inner oil pipe, and the low-speed compression adjustment shaft core is rotatably sleeved with the high-speed compression adjustment shaft core.

[0011] As an improvement, the end of the low-speed compression adjusting shaft core is threadedly connected with a low-speed compression knob, and the high-speed compression adjusting shaft core is threadedly connected with a high-speed compression knob penetrating the fixed seat, and the high-speed compression knob is rotatably sleeved between the low-speed compression knob and the fixed seat.

[0012] As an improvement, a non-cylindrical insertion hole is arranged on the low-speed compression control oil shaft core near the inner recess of the low-speed compression adjusting shaft core, and a non-cylindrical insertion rod is protruded on the low-speed compression adjusting shaft core and matched with the non-cylindrical insertion hole.

[0013] As an improvement, the low-speed compression control oil shaft core is tapered at one end near the low-speed oil port.

[0014] As an improvement, the end of the high-speed compression adjusting shaft core penetrates the left end of the compression main piston, and the damping structure comprises an inner hexagonal spinning gasket connected with the high-speed compression adjusting shaft core and an adjusting ring threadedly sleeved at the end of the high-speed compression adjusting shaft core.

[0015] The high-speed compression adjusting shaft core is further sleeved with a pre-pressing gasket near the right end of the compression main piston, and a high-speed compression spring is connected between the inner hexagonal spinning gasket and the pre-pressing gasket.

[0016] The adjusting ring is sleeved with a one-way valve spring at one end towards the compression main piston.

[0017] The two ends of the compression main piston are respectively connected with a one-way valve steel sheet and a damping valve sheet near the one-way channel, and the damping valve sheet is arranged in abutment with the pre-pressing gasket, and the one-way valve steel sheet is arranged in abutment with the one-way valve spring.

[0018] As an improvement, the end of the fork tube is further connected with a lower fixing member.

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the front fork damping structure disclosed in the present application is simple, has obvious functional effects, and is independently adjustable at high and low speeds:

[0021] The low-speed compression knob can control the position of the low-speed compression control oil shaft core, thereby controlling the opening and closing size of the corresponding oil port, and thereby controlling the generated low-speed compression damping force, so as to meet different adjustment and use needs.

[0022] The high-speed compression knob can control the position of the inner hexagonal spinning gasket, thereby controlling the pre-tightening force of the high-speed compression spring on the pre-pressing gasket and the damping valve sheet, and thereby controlling the generated high-speed compression damping force, so as to meet different adjustment and use needs. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of a high and low speed compression damping structure of a shock absorber.

[0024] Figure 2 is a structure diagram of a high-low speed compression damping structure of a shock absorber.

[0025] Figure 3 is a partial structure enlarged diagram of Figure 2

[0026] As shown in the figure: 1, outer tube; 2, fork tube; 3, main shaft; 4, inner oil pipe; 5, recovery main piston; 6, fixed seat; 7, oil passage; 8, compression main piston; 9, high speed compression adjustment shaft core; 10, one-way channel; 11, low speed compression control oil shaft core; 12, low speed oil port; 13, low speed compression adjustment shaft core; 14, low speed compression knob; 15, high speed compression knob; 16, non-cylindrical insertion hole; 17, non-cylindrical insertion rod; 18, inner hexagonal spinning gasket; 19, adjusting ring; 20, pre-pressing gasket; 21, high speed compression spring; 22, one-way valve spring; 23, one-way valve steel sheet; 24, damping valve sheet; 25, lower fixing part. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application will be further described below with reference to the drawings. The same parts are denoted by the same reference numerals.

[0028] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be a middle element, and the terms "vertical", "horizontal", "left", "right" and the like used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, and the terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] In order to make the content of the present application more easily understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0032] ​Please refer to the appendix carefully. Figures 1-3 The shock absorber has a high and low speed compression damping structure, including an outer tube 1 and a fork tube 2 sleeved inside the outer tube 1. The outer tube 1 is provided with a main shaft 3, and the fork tube 2 is provided with an inner oil pipe 4. The end of the main shaft 3 is sleeved inside the inner oil pipe 4 and is provided with a restoring main piston 5. The inner oil pipe 4 is also filled with hydraulic oil, and the end of the fork tube 2 is also connected to a lower fixing member 25.

[0033] In this application, a fixing seat 6 is provided at the end of the fork tube 2. The end of the fixing seat 6 is threadedly connected to the end of the inner oil tube 4. An oil outlet 7 is provided on the fixing seat 6 near the inner oil tube 4.

[0034] The inner end of the inner oil pipe 4 is sleeved with a compression main piston 8. A high-speed compression adjustment shaft core 9 is slidably sleeved inside the compression main piston 8. One-way channels 10 are symmetrically arranged on both sides of the compression main piston 8. The high-speed compression adjustment shaft core 9 is provided with damping structures that cooperate with the one-way channels 10 at both ends of the compression main piston 8. The high-speed compression adjustment shaft core 9 is hollow and has a low-speed compression control oil shaft core 11 sleeved inside. A low-speed oil port 12 is opened on the high-speed compression adjustment shaft core 9 near the low-speed compression control oil shaft core 11. A low-speed compression adjustment shaft core 13 for controlling the low-speed compression control oil shaft core 11 is connected to the end of the low-speed compression control oil shaft core 11 away from the inner oil pipe 4. The low-speed compression adjustment shaft core 13 is rotatably sleeved with the high-speed compression adjustment shaft core 9.

[0035] In practical use:

[0036] The end of the low-speed compression adjustment shaft 13 is threadedly connected to a low-speed compression knob 14. The high-speed compression adjustment shaft 9 passes through the fixed seat 6 and is threadedly connected to a high-speed compression knob 15. The high-speed compression knob 15 is rotatably sleeved between the low-speed compression knob 14 and the fixed seat 6. The low-speed compression oil control shaft 11 has a non-cylindrical insertion hole 16 recessed near the low-speed compression adjustment shaft 13. The low-speed compression adjustment shaft 13 has a non-cylindrical insertion rod 17 protruding outward to match the non-cylindrical insertion hole 16. The end of the low-speed compression oil control shaft 11 near the low-speed oil port 12 is tapered. The non-cylindrical insertion rod can be a prism, a plate, or other structure. The non-cylindrical insertion hole and the non-cylindrical insertion rod are matched.

[0037] The end of the high-speed compression adjustment shaft core 9 penetrates through the left end of the compression main piston 8, and the damping structure comprises an inner hexagon spinning gasket 18 arranged in linkage with the high-speed compression adjustment shaft core 9 and an adjusting ring 19 threaded on the end of the high-speed compression adjustment shaft core 9; the inner hexagon spinning gasket 18 is screwed with the inner wall of the fixed seat 6, and the high-speed compression adjustment shaft core 9 is further sleeved with a pre-pressing gasket 20 near the right end of the compression main piston 8; the inner hexagon spinning gasket 18 and the pre-pressing gasket 20 are connected with a high-speed compression spring 21 arranged therebetween; the adjusting ring 19 is sleeved with a one-way valve spring 22 at one end towards the compression main piston 8; the two ends of the compression main piston 8 are respectively connected with a one-way valve steel sheet 23 and a damping valve sheet 24 near the one-way channel 10, the damping valve sheet 24 is arranged in abutment with the pre-pressing gasket 20, and the one-way valve steel sheet 23 is arranged in abutment with the one-way valve spring 22.

[0038] In the actual implementation of the utility model, when the damping motion state, the recovery main piston pushes the inner cavity oil, a part of oil enters from the high-speed compression adjustment shaft hole, and flows into the outer cavity through the low-speed compression control oil shaft core front end taper surface, and the damping force generated thereby is low-speed compression damping. By rotating the low-speed compression knob with hand to rotate the low-speed adjustment shaft core and drive the low-speed compression control oil shaft core to advance and retreat, the oil flow can be controlled to achieve the purpose of adjusting the low-speed compression damping force, and the other part of oil enters from the side one-way channel of the compression main piston (the compression main piston is a double-channel one-way structure, and the compression damping valve sheet combination (high-speed compression spring pre-tightening compression damping valve sheet flows into the outer cavity, and the damping force generated thereby is high-speed compression damping. By rotating the high-speed compression knob with hand to rotate the high-speed adjustment shaft core and drive the inner hexagon spinning gasket to advance and retreat, the pre-tightening force of the high-speed compression spring on the compression damping valve sheet combination can be controlled, so that the oil flow of the compression damping valve sheet being opened can be controlled to achieve the purpose of adjusting the high-speed compression damping force.

[0039] In the present application: the outer hexagon of the high-speed compression adjustment shaft core is inserted into the inner hexagon of the inner hexagon spinning gasket, and the inner hexagon spinning gasket advances and retreats by rotating, and the linkage combination mode of the high-speed compression adjustment shaft core and the inner hexagon spinning gasket can be any corresponding regular shape, for example, the matching of the opposite flat position polygon is regarded as plagiarism of the present application;

[0040] The pre-tightening force of the high-speed compression spring on the compression damping valve sheet combination is the pre-tightening force medium of the metal rigidity of the spring itself, and any other shape of spring, for example, wave spring or self-shrinking elastic rubber sponge, is regarded as plagiarism of the present application;

[0041] When the hexagon socket spinning washer is pushed forward, the limit position pad is reached, which is the limit of the movable stroke of the hexagon socket spinning washer, and the two limit screws are fixed on the fixed seat and fix the limit position pad to limit the movable stroke of the spinning washer.

[0042] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0043] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the detailed description is not given here, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0044] The utility model and its implementation mode are described above, and the description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if those skilled in the art are inspired, similar structure modes and embodiments can be designed without departing from the creative purpose of the utility model, and all should belong to the protection scope of the utility model.

Claims

1. A high and low speed compression damping structure of a shock absorber, comprising an outer tube (1) and a fork tube (2) sleeved in the outer tube (1), a main shaft (3) is arranged in the outer tube (1), an inner oil tube (4) is arranged in the fork tube (2), a restoring main piston (5) is arranged in the inner oil tube (4) sleeved in the end of the main shaft (3), and hydraulic oil is filled in the inner oil tube (4), characterized in that: an end of the fork tube (2) is connected with a fixing seat (6), the end of the fixing seat (6) is threadedly connected with the end of the inner oil tube (4), and an oil passing hole (7) is formed in the fixing seat (6) close to the inner oil tube (4); a compression main piston (8) is sleeved in the inner end of the inner oil tube (4), a high speed compression adjusting shaft core (9) is slidably sleeved in the compression main piston (8), and a unidirectional channel (10) is symmetrically arranged on each side of the compression main piston (8); a damping structure is arranged on the high speed compression adjusting shaft core (9) at both ends of the compression main piston (8); the high speed compression adjusting shaft core (9) is hollow, a low speed compression oil control shaft core (11) is threadedly sleeved in the high speed compression adjusting shaft core (9), a low speed oil hole (12) is formed in the high speed compression adjusting shaft core (9) close to the low speed compression oil control shaft core (11), a low speed compression adjusting shaft core (13) for controlling the low speed compression oil control shaft core (11) is connected to one end of the low speed compression oil control shaft core (11) away from the inner oil tube (4), and the low speed compression adjusting shaft core (13) is rotatably sleeved with the high speed compression adjusting shaft core (9). A low speed compression knob (14) is threadedly connected to the end of the low speed compression adjusting shaft core (13), a high speed compression knob (15) is threadedly connected to the high speed compression adjusting shaft core (9) penetrating the fixing seat (6), and the high speed compression knob (15) is rotatably sleeved between the low speed compression knob (14) and the fixing seat (6). A non-cylindrical insertion hole (16) is recessed on the low speed compression oil control shaft core (11) close to the low speed compression adjusting shaft core (13), and a non-cylindrical insertion rod (17) is protruded on the low speed compression adjusting shaft core (13) corresponding to the non-cylindrical insertion hole (16). One end of the low speed compression oil control shaft core (11) close to the low speed oil hole (12) is conically arranged.

2. The high-low speed compression damping structure of shock absorber according to claim 1, characterized in that: The end of the high speed compression adjusting shaft core (9) is arranged penetrating the left end of the compression main piston (8), the damping structure comprises an inner hexagonal rotary pressure gasket (18) linked with the high speed compression adjusting shaft core (9) and an adjusting ring (19) threadedly sleeved at the end of the high speed compression adjusting shaft core (9); 3. The high-low speed compression damping structure of shock absorber according to claim 2, characterized in that: A pre-pressing gasket (20) is further sleeved on the high speed compression adjusting shaft core (9) close to the right end of the compression main piston (8), a high speed compression spring (21) is connected between the inner hexagonal rotary pressure gasket (18) and the pre-pressing gasket (20); 4. The high-low speed compression damping structure of shock absorber according to claim 3, characterized in that: A one-way valve spring (22) is sleeved on one end of the adjusting ring (19) facing the compression main piston (8); 5. The high-low speed compression damping structure of shock absorber according to claim 2, characterized in that: A one-way valve steel sheet (23) and a damping valve sheet (24) are respectively connected to both ends of the compression main piston (8) close to the unidirectional channel (10), the damping valve sheet (24) is arranged in abutment with the pre-pressing gasket (20), and the one-way valve steel sheet (23) is arranged in abutment with the one-way valve spring (22). ​ ​ ​ 6. The high-low speed compression damping structure of shock absorber according to claim 1, characterized in that: The lower end of the fork tube (2) is also connected to a lower fixing member (25).

Images