Shoulder control structure damper for bicycle

Abstract

The shoulder control structure damper for the bicycle comprises a cylinder barrel, the two ends of the cylinder barrel are open, a tail plug is arranged at one end of the inner side of the cylinder barrel, a connecting rod is connected to the end, facing the inner side of the cylinder barrel, of the tail plug, an adjusting control rod is arranged in the middle of the connecting rod, and a valve body is arranged at the end, away from the tail plug, of the connecting rod. A valve element is arranged on the inner side of the valve body, and the adjusting control rod abuts against the valve element. The end, away from the tail plug, of the valve body is connected with a connector, a disc spring is arranged between the end, facing the tail plug, of the connector and the valve body, the other end of the connector is provided with a plug, the plug is connected with the valve body, when the connector is pressed to move towards the tail plug, the disc spring deforms, and an overpressure overflow channel is formed between the plug and the connector; a piston is installed at the other end of the inner side of the cylinder barrel, a piston rod is arranged at the end, away from the tail plug, of the piston, and the piston rod extends out of the cylinder barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a shoulder control structure damper for a bicycle. Background Art

[0002] A damper is usually provided on a bicycle to provide a buffer when encountering a bumpy road surface, thereby improving the riding comfort. The damper structures used in bicycles of different structures on the market are also different.

[0003] For example, a Chinese patent with patent number CN201821928594.2 discloses a hidden damper structure for an electric bicycle, comprising an aluminum cylinder with a stepped hole in the middle of the aluminum cylinder, a handle tube that slides up and down with a delay is inserted into the aluminum cylinder, the outer circumferential surface of the handle tube cooperates with the aluminum cylinder through an oil seal and a dust cover, a damper is installed inside the handle tube, and the specific structure of the damper is as follows: it comprises an oil storage cylinder installed inside the handle tube, a valve system assembly is installed at the bottom of the oil storage cylinder, a buffer spring is installed inside the oil storage cylinder at the top of the valve system assembly, a piston rod is connected to the middle of the valve system assembly, the piston rod passes through the handle tube to the bottom of the aluminum cylinder, a connector is installed at the bottom of the aluminum cylinder through seabed screws and aluminum gaskets, and the piston rod is fixed to the connector; a blind head is also installed on the inner wall surface at the top of the handle tube through a sealing ring.

[0004] The hidden damper structure provided by the above patent has the advantages of no oil leakage and good use effect. However, this structural damper does not have an overpressure overflow structure, which makes it easy to cause damage to the damper when the damper is over-pressurized, which needs further improvement. Utility Model Content

[0005] The utility model aims to provide a shoulder-controlled structure damper for a bicycle, aiming to improve the problem that the existing damper does not have an overpressure overflow structure, which leads to the problem that the damper is easily damaged when the damper is over-pressurized.

[0006] The utility model is achieved in this way:

[0007] A shoulder-control structure damper for a bicycle comprises a cylinder, wherein both ends of the cylinder are open, and a tail plug is provided at one end inside the cylinder, a connecting rod is connected to the end of the tail plug facing the inside of the cylinder, an adjusting control rod is provided in the middle of the connecting rod, a valve body is provided at the end of the connecting rod away from the tail plug, a valve core is provided inside the valve body, and the adjusting control rod rests on the valve core; an insert column is provided at the end of the valve body away from the tail plug, the insert column is connected to a connecting head, a disc spring is provided between the end of the connecting head facing the tail plug and the valve body, a plug is provided at the other end of the connecting head, the plug is connected to the valve body, and the disc spring is deformed when the connecting head is pressed and moves toward the tail plug, and an overpressure overflow channel is formed between the plug and the connecting head; a piston is installed at the other end inside the cylinder, and a piston rod is provided at the end of the piston away from the tail plug, and the piston rod is arranged to protrude out of the cylinder.

[0008] Preferably, a gasket is provided at one end of the cylinder barrel near the piston rod, and a first O-ring is provided between the gasket and the cylinder barrel; a sealing guide sleeve is connected to the inner side of the gasket, and a limit ring is provided at the position of the rear end of the sealing guide sleeve in the inner cavity of the cylinder barrel.

[0009] Preferably, a second O-ring is provided between the tail plug and the cylinder, and a connecting groove is provided at the rear end of the tail plug, a first adjusting screw is threadedly connected to the inside of the connecting groove, and an installation groove is provided at one end of the tail plug facing the inside of the cylinder, and the installation groove is used to connect with the connecting rod.

[0010] Preferably, the rear end of the connecting rod is provided with an insertion groove, and a plurality of third O-rings are provided between the connecting rod and the tail plug; a limit groove is provided on the outer side of the connecting rod; the front end of the connecting rod is inserted into the valve body, and a plurality of third O-rings are provided between the valve body and the connecting rod; a fourth O-ring is provided between the plug and the plug; a flow hole is provided on the side of the valve body, a first spring is provided on the front end of the valve core, and a fifth O-ring is provided between the valve core and the valve body; a sixth O-ring is provided between the connecting head and the cylinder barrel; a second spring is provided between the plug and the connecting head, and a damping plate is provided between the second spring and the connecting head.

[0011] Preferably, a limiting convex ring is provided on the inner side of the piston, a core body is provided on the inner side of the piston, and a seventh O-ring is provided between the core body and the piston; a third spring is provided at the rear end of the core body, and a guide hole is provided on the side of the piston aligned with the core body; a piston ring is provided at the rear end of the piston, and a sealing ring is provided between the piston ring and the cylinder barrel; a fourth spring is provided between the front end of the piston ring and the piston, a one-way damping valve plate is provided at the rear end of the fourth spring, and the one-way damping valve plate is attached to the front end surface of the piston ring.

[0012] Preferably, a plurality of eighth O-rings are provided between one end of the piston rod inserted into the piston and the piston, and a core control rod is provided on the inner side of the piston rod, and the core control rod is against the front end of the core; an adjustment groove is provided at the end of the piston rod facing outward, and a second adjustment screw is provided inside the adjustment groove, and the second adjustment screw facilitates the adjustment of the distance of the core control rod moving forward and backward.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with an overpressure overflow structure inside. When the pressure in the cylinder is too high, the disc spring will be deformed, so that the gap between the plug and the connector is opened, thereby forming an overpressure overflow channel, which is convenient for the excess pressure to be discharged, thereby protecting the safety of the damper.

[0015] 2. The cylinder barrel and the piston rod of the utility model are connected by a sealing guide assembly, so that the piston rod can be extended and retracted while preventing dust from entering the cylinder barrel through the gap between the piston rod and the cylinder barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the cylinder barrel of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the connecting rod of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the piston of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the piston rod of the utility model.

[0021] In the figure: 1, cylinder; 11, gasket; 12, first O-ring; 13, sealing guide sleeve; 14, stop ring; 15, tail plug; 16, second O-ring; 17, connecting groove; 18, first adjusting screw; 19, mounting groove; 2, connecting rod; 21, third O-ring; 22, adjusting control rod; 23, stop groove; 24, valve body; 241, flow hole; 242, plug column; 243, fourth O-ring; 25, valve core; 251, fifth O-ring; 252, first spring Spring; 26, connector; 261, sixth O-ring; 262, disc spring; 27, plug; 28, second spring; 29, damping plate; 3, piston; 31, limiting convex ring; 32, core; 33, seventh O-ring; 34, third spring; 35, piston ring; 36, sealing ring; 37, fourth spring; 38, one-way damping valve plate; 39, guide hole; 4, piston rod; 41, eighth O-ring; 42, core control rod; 43, adjustment slot; 44, second adjustment screw. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0024] Example 1

[0025] like Figure 1As shown, a shoulder control structure damper for a bicycle includes a cylinder 1, which is provided with openings at both ends, and a tail plug 15 is provided at one end inside the cylinder 1, and the tail plug 15 is used to block the rear end opening of the cylinder 1. A connecting rod 2 is connected to the end of the tail plug 15 facing the inside of the cylinder 1, and an adjustment control rod 22 is provided in the middle of the connecting rod 2. The connecting rod 2 and the adjustment control rod 22 are used to adjust and control the damper. A valve body 24 is provided at the end of the connecting rod 2 away from the tail plug 15, and a valve core 25 is provided inside the valve body 24, and the adjustment control rod 22 is against the valve core 25; this structure is convenient for controlling the opening and closing of the valve core 25 by adjusting the control rod 22, and is convenient for the use of the valve core 25. The end of the valve body 24 away from the tail plug 15 is provided with a plug 242, and the plug 242 is connected to a connector 26. A disc spring 262 is provided between the end of the connector 26 facing the tail plug 15 and the valve body 24. The other end of the connector 26 is provided with a plug 27, and the plug 27 is connected to the valve body 24. When the connector 26 is pressed and moves toward the tail plug 15, the disc spring 262 is deformed, and an overpressure overflow channel is formed between the plug 27 and the connector 26; this structure is convenient for the overpressure overflow channel to be opened for pressure relief when the pressure in the cylinder 1 is too high. A piston 3 is installed at the other end of the inner side of the cylinder 1, and a piston rod 4 is provided at the end of the piston 3 away from the tail plug 15, and the piston rod 4 is arranged outside the cylinder 1; this structure is convenient for the piston rod 4 to drive the piston 3 to move back and forth in the cylinder 1.

[0026] Working principle: One end of the piston rod 4 does not provide damping when the core 32 is open, and stretches to provide damping when the valve core 25 is closed. One end of the connecting rod 2 is provided, which is locked open when the valve core 25 at the end of the valve body 24 is open, and the oil circuit is blocked when the valve core 25 is closed, and the piston rod 4 cannot be pressed down and is in a locked state. When a certain pressure is exceeded, the disc spring 262 is deformed, the overpressure overflow surface overflows, and it is instantly locked open. Compared with the prior art, an overpressure overflow structure is provided inside the damper. When the pressure in the cylinder 1 is too high, the disc spring 262 will be deformed, so that the gap between the plug 27 and the connector 26 is opened, thereby forming an overpressure overflow channel, which is convenient for the excess pressure to be discharged, thereby protecting the safety of the damper.

[0027] Example 2

[0028] like Figure 1As shown, a shoulder control structure damper for a bicycle includes a cylinder 1, which is provided with openings at both ends, and a tail plug 15 is provided at one end inside the cylinder 1, and the tail plug 15 is used to block the rear end opening of the cylinder 1. A connecting rod 2 is connected to the end of the tail plug 15 facing the inside of the cylinder 1, and an adjustment control rod 22 is provided in the middle of the connecting rod 2. The connecting rod 2 and the adjustment control rod 22 are used to adjust and control the damper. A valve body 24 is provided at the end of the connecting rod 2 away from the tail plug 15, and a valve core 25 is provided inside the valve body 24, and the adjustment control rod 22 is against the valve core 25; this structure is convenient for controlling the opening and closing of the valve core 25 by adjusting the control rod 22, and is convenient for the use of the valve core 25. The end of the valve body 24 away from the tail plug 15 is provided with a plug 242, and the plug 242 is connected to a connector 26. A disc spring 262 is provided between the end of the connector 26 facing the tail plug 15 and the valve body 24. The other end of the connector 26 is provided with a plug 27, and the plug 27 is connected to the valve body 24. When the connector 26 is pressed and moves toward the tail plug 15, the disc spring 262 is deformed, and an overpressure overflow channel is formed between the plug 27 and the connector 26; this structure is convenient for the overpressure overflow channel to be opened for pressure relief when the pressure in the cylinder 1 is too high. A piston 3 is installed at the other end of the inner side of the cylinder 1, and a piston rod 4 is provided at the end of the piston 3 away from the tail plug 15, and the piston rod 4 is arranged outside the cylinder 1; this structure is convenient for the piston rod 4 to drive the piston 3 to move back and forth in the cylinder 1.

[0029] like Figure 2 As shown, a gasket 11 is provided at one end of the cylinder 1 near the piston rod 4, and a first O-ring 12 is provided between the gasket 11 and the cylinder 1; a sealing guide sleeve 13 is connected to the inner side of the gasket 11, and a limit ring 14 is provided at the position where the inner cavity of the cylinder 1 fits the rear end of the sealing guide sleeve 13; this structure can make the cylinder 1 and the piston rod 4 seal and guide, so that the piston rod 4 can be telescoped and used along the cylinder 1, which is convenient for the flexible use of the piston rod 4. A second O-ring 16 is provided between the tail plug 15 and the cylinder 1, and this structure makes the cylinder 1 and the tail plug 15 effectively sealed. A connecting groove 17 is provided at the rear end of the tail plug 15, and a first adjusting screw 18 is threadedly connected to the connecting groove 17. The connecting groove 17 and the first adjusting screw 18 are convenient for driving the adjustment control rod 22 to move forward and backward. A mounting groove 19 is provided at one end of the tail plug 15 facing the inside of the cylinder 1, and the mounting groove 19 is used to connect with the connecting rod 2.

[0030] like Figure 3As shown, the rear end of the connecting rod 2 is provided with an insertion installation groove 19, and a plurality of third O-rings 21 are provided between the connecting rod 2 and the tail plug 15; this structure facilitates the connection between the connecting rod 2 and the tail plug 15. A limiting groove 23 is provided on the outer side of the connecting rod 2; the limiting groove 23 facilitates the mutual limitation between the connecting rod 2 and the tail plug 15. The front end of the connecting rod 2 is inserted into the valve body 24, and a plurality of third O-rings 21 are provided between the valve body 24 and the connecting rod 2; this structure enables the valve body 24 and the connecting rod 2 to be stably connected. A fourth O-ring 243 is provided between the plug 242 and the plug 27; the fourth O-ring 243 facilitates the sealing treatment between the plug 242 and the plug 27. A flow hole 241 is provided on the side of the valve body 24, and the flow hole 241 facilitates the flow of oil inside the cylinder 1. A first spring 252 is provided at the front end of the valve core 25, and this structure facilitates the automatic reset of the valve core 25. A fifth O-ring 251 is provided between the valve core 25 and the valve body 24 to facilitate sealing between the valve core 25 and the valve body 24. A sixth O-ring 261 is provided between the connector 26 and the cylinder 1 to facilitate sealing between the connector 26 and the cylinder 1. A second spring 28 is provided between the plug 27 and the connector 26, and a damping plate 29 is provided between the second spring 28 and the connector 26; this structure facilitates the damping plate 29 to open when under pressure.

[0031] like Figure 4 As shown, a limiting convex ring 31 is provided on the inner side of the piston 3, and the limiting convex ring 31 is used to facilitate the mutual limiting between the piston 3 and the piston rod 4. A core 32 is provided on the inner side of the piston 3, and a seventh O-ring 33 is provided between the core 32 and the piston 3; a third spring 34 is provided at the rear end of the core 32, and the third spring 34 is used to facilitate the resetting of the core 32. A guide hole 39 is provided on the side of the piston 3 aligned with the position of the core 32; the guide hole 39 is used to facilitate the flow of oil inside the cylinder 1. A piston ring 35 is provided at the rear end of the piston 3, and a sealing ring 36 is provided between the piston ring 35 and the cylinder 1; this structure allows the piston 3 to move back and forth stably in the cylinder 1. A fourth spring 37 is provided between the front end of the piston ring 35 and the piston 3, and a one-way damping valve plate 38 is provided at the rear end of the fourth spring 37, and the one-way damping valve plate 38 is attached to the front end surface of the piston ring 35; the one-way damping valve plate 38 is used to facilitate forward movement when under pressure.

[0032] like Figure 5 As shown, a plurality of eighth O-rings 41 are arranged between the end of the piston rod 4 inserted into the piston 3 and the piston 3, and the eighth O-rings 41 are used to facilitate the stable connection between the piston rod 4 and the piston 3. A core control rod 42 is arranged inside the piston rod 4, and the core control rod 42 abuts against the front end of the core 32; this structure is convenient for controlling the stability of the core 32. An adjustment groove 43 is arranged at the end of the piston rod 4 facing outward, and a second adjustment screw 44 is arranged inside the adjustment groove 43, and the second adjustment screw 44 is convenient for adjusting the distance of the core control rod 42 moving forward and backward.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shoulder control structure damper for a bicycle, comprising a cylinder (1), characterized in that: The cylinder barrel (1) is provided with openings at both ends, and a tail plug (15) is provided at one end of the inner side of the cylinder barrel (1); the end of the tail plug (15) facing the inner side of the cylinder barrel (1) is connected to a connecting rod (2); an adjusting control rod (22) is provided in the middle of the connecting rod (2); a valve body (24) is provided at the end of the connecting rod (2) away from the tail plug (15); a valve core (25) is provided on the inner side of the valve body (24); the adjusting control rod (22) abuts against the valve core (25); a plug column (242) is provided at the end of the valve body (24) away from the tail plug (15); the plug column (242) is connected to a connector (26); A disc spring (262) is provided between one end of the connecting head (26) facing the tail plug (15) and the valve body (24), and a plug (27) is provided at the other end of the connecting head (26). The plug (27) is connected to the valve body (24). When the connecting head (26) is pressed and moves toward the tail plug (15), the disc spring (262) is deformed, and an overpressure overflow channel is formed between the plug (27) and the connecting head (26). A piston (3) is installed at the other end of the inner side of the cylinder (1), and a piston rod (4) is provided at the end of the piston (3) away from the tail plug (15). The piston rod (4) is arranged to protrude out of the cylinder (1).

2. A shoulder control structure damper for a bicycle according to claim 1, characterized in that: A gasket (11) is provided at one end of the cylinder barrel (1) close to the piston rod (4), and a first O-ring (12) is provided between the gasket (11) and the cylinder barrel (1); a sealing guide sleeve (13) is connected to the inner side of the gasket (11), and a limit ring (14) is provided at a position where the inner cavity of the cylinder barrel (1) fits the rear end of the sealing guide sleeve (13).

3. A shoulder control structure damper for a bicycle according to claim 2, characterized in that: A second O-ring (16) is provided between the tail plug (15) and the cylinder barrel (1), and a connecting groove (17) is provided at the rear end of the tail plug (15), a first adjusting screw (18) is internally threadedly connected to the connecting groove (17), and a mounting groove (19) is provided at one end of the tail plug (15) facing the inside of the cylinder barrel (1), and the mounting groove (19) is used to connect with the connecting rod (2).

4. A shoulder control structure damper for a bicycle according to claim 3, characterized in that: The rear end of the connecting rod (2) is provided with an insertion installation groove (19), and a plurality of third O-rings (21) are provided between the connecting rod (2) and the tail plug (15); a limiting groove (23) is provided on the outer side of the connecting rod (2); the front end of the connecting rod (2) is inserted into the valve body (24), and a plurality of third O-rings (21) are provided between the valve body (24) and the connecting rod (2); a fourth O-ring (243) is provided between the plug (242) and the plug (27); the valve body A flow hole (241) is provided on the side of the valve core (24); a first spring (252) is sleeved on the front end of the valve core (25); a fifth O-ring (251) is provided between the valve core (25) and the valve body (24); a sixth O-ring (261) is provided between the connecting head (26) and the cylinder barrel (1); a second spring (28) is provided between the plug (27) and the connecting head (26); and a damping plate (29) is provided between the second spring (28) and the connecting head (26).

5. The shoulder control structure damper for bicycle according to claim 1, characterized in that: The inner side surface of the piston (3) is provided with a limiting convex ring (31), the inner side of the piston (3) is provided with a core body (32), and a seventh O-ring (33) is provided between the core body (32) and the piston (3); a third spring (34) is provided at the rear end of the core body (32), and a guide hole (39) is provided on the side surface of the piston (3) aligned with the core body (32); a piston ring (35) is provided at the rear end of the piston (3), and a sealing ring (36) is provided between the piston ring (35) and the cylinder barrel (1); a fourth spring (37) is provided between the front end of the piston ring (35) and the piston (3), and a one-way damping valve plate (38) is provided at the rear end of the fourth spring (37), and the one-way damping valve plate (38) is attached to the front end surface of the piston ring (35).

6. The shoulder control structure damper for bicycle according to claim 5, characterized in that: A plurality of eighth O-rings (41) are arranged between one end of the piston rod (4) inserted into the piston (3) and the piston (3), and a core control rod (42) is arranged on the inner side of the piston rod (4), and the core control rod (42) is pressed against the front end of the core (32); an adjustment groove (43) is arranged on the outer end of the piston rod (4), and a second adjustment screw (44) is arranged inside the adjustment groove (43), and the second adjustment screw (44) facilitates the adjustment of the distance of the forward and backward movement of the core control rod (42).

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