Motorcycle shock absorber with external gas cylinder

Abstract

The utility model discloses a motorcycle shock absorber with an externally-hung gas cylinder. The problem that a traditional gas cylinder is low in position and inconvenient to adjust is solved. Comprising a working barrel, a base and a gas cylinder connected through an aluminum pipe mechanism. The aluminum pipe mechanism comprises an upper-lower pipe joint assembly and an aluminum pipe, the upper-lower pipe joint is connected with the base / gas cylinder and the aluminum pipe through a sleeving groove, a sleeve hole, a clamping ring and a sealing ring, and a rotating sleeve buckles the aluminum pipe and is in interference fit to prevent falling through a retaining groove; the gas cylinder is provided with a regulating valve, a valve plug regulates flow of a valve port through an inserting rod, and a knob controls operation. The gas cylinder is hung outside the aluminum pipe mechanism and is flexibly positioned, operation of the adjusting valve is facilitated, sealing is reliable, and adjusting is accurate.

Description

Technical Field

[0001] This utility model relates to a waste paper cleaning structure on a roller die-cutting machine, specifically to a motorcycle shock absorber with an external gas cylinder. Background Technology

[0002] An existing motorcycle shock absorber with an air cylinder has a structure including a working cylinder, a base, and an air cylinder. A piston is installed inside the working cylinder, and a piston rod is connected to the piston. The end of the piston rod extends out of the working cylinder. A spring is installed between the piston rod and the working cylinder. The base is installed at the bottom of the working cylinder, and the air cylinder is connected to the base. Since the air cylinder is directly installed on the base, the position of the air cylinder is relatively low, making it difficult to reach the adjustment valve knob, which seriously affects the ease of operation of adjusting the shock absorber's stiffness. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a motorcycle shock absorber with an externally mounted gas cylinder. The gas cylinder is externally mounted on the side of the base through a flexible swinging aluminum tube mechanism, which solves the problem of inconvenient adjustment caused by the low position of traditional gas cylinders, while ensuring the sealing of the pipeline and the accuracy of adjustment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a motorcycle shock absorber with an externally mounted gas cylinder, comprising a working cylinder, a base, and a gas cylinder; the bottom of the working cylinder is mounted on the base, and the gas cylinder is laterally connected to the base via an aluminum tube mechanism.

[0005] The aluminum tube mechanism includes an upper tube connector assembly, a lower tube connector assembly, and an aluminum tube; the upper tube connector assembly is connected to the gas cylinder, and the lower tube connector assembly is connected to the base, and the upper and lower tube connector assemblies have the same structure.

[0006] The upper pipe connector assembly and the lower pipe connector assembly respectively include a connector head and a pipe connector. One end of the connector head is threaded to the base or gas cylinder, and the outer wall of the other end is provided with an annular sleeve groove.

[0007] One end of the pipe fitting is provided with a sleeve hole, which is fitted into the sleeve groove of the connector and fixed by a retaining ring. The retaining ring is an open elastic ring. A sealing ring is provided between the inner wall of the sleeve hole and the sleeve groove to achieve a seal and allow the pipe fitting to rotate freely around the connector.

[0008] The other end of the pipe joint is provided with an insertion tube, and a rotating sleeve is fitted on the outer wall of the insertion tube.

[0009] The two tube fittings are inserted into the two ends of the aluminum tube respectively, and the rotating sleeve is pressed against the outer wall of the aluminum tube. The rotating sleeve and the aluminum tube are interference-fitted, and the interference fit is 0.05-0.15mm. The inner wall of the rotating sleeve and the outer wall of the tube fitting are respectively provided with annular anti-reverse grooves with right-angled triangular cross sections. The rotating sleeve and the outer wall of the aluminum tube are fixed by interference fit, and the annular anti-reverse grooves are embedded in the circumferential wall of the aluminum tube to prevent the aluminum tube from falling off.

[0010] The gas cylinder is equipped with a regulating valve for adjusting the flow rate of the damping oil, the regulating valve comprising:

[0011] Valve body: It is fixedly installed inside the gas cylinder, and a valve port is provided at the front end of its interior;

[0012] Valve stem: One end is fixedly connected to the knob, and the other end is threadedly connected to the valve plug;

[0013] Valve plug: It can extend and retract along the valve body axis, with its extension and retraction direction facing the valve port.

[0014] Insert rod: Fixed to the end face of the valve plug facing the valve port, its diameter is smaller than the valve port diameter, and the insert rod is coaxial with the valve plug.

[0015] When the knob rotates the valve stem, the valve stem drives the valve plug to move axially, and the depth of the insertion of the insert rod into the valve port adjusts the valve port opening; when the valve plug completely seals the valve port, the shock-absorbing oil in the working cylinder is disconnected from the gas cylinder.

[0016] The beneficial effects of the utility model are:

[0017] 1. Convenience of adjustment: The aluminum tube mechanism, through the interference fit between the rotating sleeve and the aluminum tube and the anti-reverse groove design, enables the gas cylinder to swing at multiple angles (such as up and down, left and right adjustment), so that the knob is in a position that is easy for the rider to reach.

[0018] 2. Sealing reliability: The clearance fit between the sleeve groove and the sleeve hole, the axial limiting of the retaining ring, and the radial sealing of the sealing ring ensure that there is no leakage in the oil circuit inside the aluminum tube mechanism;

[0019] 3. High adjustment precision: The small diameter difference between the valve plug rod and the valve port enables linear flow regulation and completely isolates the damping oil from the gas cylinder when the flow is cut off, thus preventing oil leakage.

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

[0021] Figure 1 This is a perspective view of a specific embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of a specific embodiment of the present utility model;

[0023] Figure 3 for Figure 2 A magnified view of A in the middle.

[0024] Instruction manual drawing reference numerals: 1-Working cylinder; 2-Base; 3-Gas cylinder; 4-Aluminum tube mechanism; 41-Upper tube connector assembly; 42-Lower tube connector assembly; 43-Aluminum tube; 411-Upper connector; 421-Lower connector; 412-Upper tube connector; 422-Lower tube connector; 48-Sleeve groove; 49-Sleeve hole; 5-Snap ring; 6-Sealing ring; 7-Insertion tube; 8-Rotating sleeve; 9-Anti-reverse groove; 10-Regulating valve; 101-Valve body; 102-Valve stem; 103-Valve plug; 104-Knob; 106-Valve port; 105-Insertion rod. Detailed Implementation

[0025] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] like Figure 1 — Figure 3 As shown, this embodiment discloses a motorcycle shock absorber with an externally mounted gas cylinder, including a working cylinder 1, a base 2, a gas cylinder 3, and an aluminum tube mechanism 4. A piston is installed inside the working cylinder 1, and a piston rod is connected to the piston. The end of the piston rod extends out of the working cylinder. A spring is arranged between the piston rod and the working cylinder 1. The gas cylinder 3 is externally mounted to the right side of the base 2 through the aluminum tube mechanism 4.

[0027] Assembly of the aluminum tube mechanism:

[0028] The lower connector 421 of the lower pipe connector assembly 42 is threaded to the mounting hole reserved on the right side of the base 2; the upper connector 411 of the upper pipe connector assembly 41 is threaded to the mounting interface at the bottom of the gas cylinder 3.

[0029] The upper pipe connector 412 is fitted into the sleeve hole 49 of the upper connector 411 and inserted to the position of the retaining ring groove. After the insertion depth reaches the position of the retaining ring groove, the open elastic retaining ring 5 is installed to clamp the outer wall of the sleeve hole 49 and restrict the axial movement of the upper pipe connector 412. The gap between the sleeve hole 49 and the sleeve groove 48 is 0.1-0.2mm. The sealing ring 6 is made of nitrile rubber to achieve radial sealing.

[0030] The sleeve hole 49 of the lower pipe connector 422 is aligned with the sleeve groove 48 of the lower connector 421 and inserted. After the insertion depth reaches the position of the retaining ring groove, the open elastic retaining ring 5 is installed to clamp the outer wall of the sleeve hole 49, restricting the axial movement of the lower pipe connector 422. The gap between the sleeve hole 49 and the sleeve groove 48 is 0.1-0.2mm. The sealing ring 6 is made of nitrile rubber to achieve radial sealing.

[0031] The inserts 7 of the two pipe fittings are inserted into the two ends of the aluminum tube 43 respectively (the insertion depth is 1 / 5-1 / 2 of the length of the aluminum tube). The rotating sleeve 8 is press-fitted against the outer wall of the aluminum tube 43 with an interference of 0.08-0.12mm. The right-angled triangular anti-reverse groove 9 on its inner wall and the anti-reverse groove 9 on the outer wall of the insert 7 are engaged with the circumferential wall of the aluminum tube 43 to prevent the aluminum tube 43 from axially disengaging.

[0032] Operation of the regulating valve:

[0033] When the knob 104 is rotated, the valve stem 102 thread drives the valve plug 103 to move axially along the valve body 101; the insertion rod 105 with a diameter of 2mm on the end face of the valve plug 103 moves with the valve plug and inserts into the valve port 106 with a diameter of 3mm. The greater the insertion depth, the smaller the valve port opening, the less the damping oil flow, and the greater the damping of the shock absorber; when the valve plug 103 completely blocks the valve port 106, the damping oil is disconnected from the gas cylinder 3, and the system pressure remains stable.

[0034] The following technical effects are achieved by adopting the above technical solution:

[0035] 1. Convenience of adjustment: The aluminum tube mechanism, through the interference fit between the rotating sleeve and the aluminum tube and the anti-reverse groove design, enables the gas cylinder to swing at multiple angles (such as up and down, left and right adjustment), so that the knob is in a position that is easy for the rider to reach.

[0036] 2. Sealing reliability: The clearance fit between the sleeve groove and the sleeve hole, the axial limiting of the retaining ring, and the radial sealing of the sealing ring ensure that there is no leakage in the oil circuit inside the aluminum tube mechanism;

[0037] 3. High adjustment precision: The small diameter difference between the valve plug rod and the valve port enables linear flow regulation and completely isolates the damping oil from the gas cylinder when the flow is cut off, thus preventing oil leakage.

Claims

1. A motorcycle shock absorber with an externally mounted gas cylinder, comprising a working cylinder (1), a base (2), and a gas cylinder (3), wherein the bottom of the working cylinder (1) is mounted on the base (2), characterized in that: The gas cylinder (3) is laterally connected to the base (2) via an aluminum tube mechanism (4); the aluminum tube mechanism (4) includes an upper tube connector assembly (41), a lower tube connector assembly (42), and an aluminum tube (43). The upper tube connector assembly (41) is connected to the gas cylinder (3), and the lower tube connector assembly (42) is connected to the base (2). The upper and lower tube connector assemblies have the same structure. The upper tube connector assembly (41) and the lower tube connector assembly (42) respectively include a connector and a tube connector. One end of the connector is threaded to the base (2) or the gas cylinder (3), and the outer wall of the other end is provided with an annular sleeve groove (48). One end of the tube connector is provided with a sleeve hole (49), which is sleeved into the sleeve groove (43). 48) and fixed by a retaining ring (5), a sealing ring (6) is provided between the inner wall of the sleeve hole and the sleeve groove; the other end of the pipe joint is provided with a tube (7), and a rotating sleeve (8) is provided on the outer wall of the tube; the tubes (7) of the two pipe joints are respectively inserted into the two ends of the aluminum tube (43), the rotating sleeve (8) is pressed against the outer wall of the aluminum tube (43), the inner wall of the rotating sleeve and the outer wall of the tube are respectively provided with annular anti-reverse grooves (9) with a right-angled triangle cross section, the rotating sleeve and the outer wall of the aluminum tube are fixed by interference fit, and the annular anti-reverse grooves (9) are embedded in the circumferential wall of the aluminum tube; the gas cylinder (3) is provided with a regulating valve (10) for adjusting the flow rate of the damping oil, and the regulating valve (10) controls the flow rate of the damping oil by adjusting the knob.

2. The motorcycle shock absorber according to claim 1, characterized in that: The regulating valve (10) includes a valve body (101), a valve stem (102), and a valve plug (103); one end of the valve stem is connected to a knob (104), and the other end is threadedly connected to the valve plug (103); the valve plug can move axially, and a valve port (106) is provided in front of its movement direction, and a plug rod (105) with a diameter smaller than the valve port is provided at the end of the valve plug.

3. The motorcycle shock absorber according to claim 1, characterized in that: The interference fit between the rotating sleeve (8) and the aluminum tube (43) is 0.05-0.15 mm.

4. The motorcycle shock absorber according to claim 1, characterized in that: The retaining ring (5) is an open elastic ring.

5. The motorcycle shock absorber according to claim 2, characterized in that: The insert (105) and the valve plug (103) are coaxially arranged.

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