Magnetic damping rod for bicycle

Abstract

The magnetic damping rod for the bicycle comprises a cylinder barrel, a guide washer is arranged at the front end of the inner side of the cylinder barrel, a tail plug is arranged at the rear end of the inner side of the cylinder barrel, and the guide washer and the tail plug are connected with the cylinder barrel through bolts. A fixed magnet is arranged at the end, facing the inner side of the cylinder barrel, of the tail plug and connected with the tail plug through a fixing screw. A piston rod is inserted into an opening in the front end of the cylinder barrel, a movable magnet is arranged on the inner side of the cylinder barrel, and the movable magnet is connected with the piston rod through a fixing screw; the close ends of the movable magnet and the fixed magnet repel each other. A fixed magnet is installed at the rear end of the cylinder barrel, a piston rod is installed at the front end of the cylinder barrel, a movable magnet is arranged at the end, inserted into the cylinder barrel, of the piston rod, and the ends, close to each other, of the movable magnet and the fixed magnet are discharged. And the damping device with the structure does not have the problem of air leakage or oil leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle shock absorption, and particularly relates to a magnetic shock absorption rod for bicycles. Background Art

[0002] A shock absorption device is installed at the front fork of a mountain bike, and the shock absorption device is used to shock absorb the bicycle when it travels on a bumpy road. At present, the shock absorption devices used for bicycle front forks on the market are divided into spring shock absorption devices, air pressure shock absorption devices, oil pressure shock absorption devices, etc. according to different shock absorption elements.

[0003] Chinese Patent with the application number CN202321938719.0 discloses a bicycle front fork auxiliary shock absorption device, which includes a bicycle shock absorption front fork. A hub connecting piece is welded to the lower part of the bicycle shock absorption front fork, and a shock absorption lubricating oil adding device is installed on the upper part of the bicycle shock absorption front fork; a Y-shaped frame is arranged between the shock absorption lubricating oil adding devices; a shock absorption buffer protection frame structure is arranged on the upper outer side of the bicycle shock absorption front fork; a connecting frame is welded between the bicycle shock absorption front forks. This bicycle front fork auxiliary shock absorption device can protect the upper outer side position of the bicycle shock absorption front fork by using a dust-proof bellows, thereby preventing dust and sundries from easily adhering to the buffer part of the bicycle shock absorption front fork. At the same time, the buffer spring can push the first rubber ring and the second rubber ring to both sides.

[0004] The bicycle front fork auxiliary shock absorption device provided by the above patent is a spring shock absorption device. The spring shock absorption structure is prone to rust or generate abnormal noises after long-term use. The air pressure shock absorption device and the oil pressure shock absorption device are not prone to such problems. Therefore, most of the shock absorption devices for bicycle front forks on the market are air pressure type or oil pressure type. However, the air pressure type or oil pressure type shock absorption device is prone to air leakage or oil leakage problems during use, affecting the normal riding of the bicycle. Content of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic shock absorption rod for bicycles, aiming to improve the problem that the existing bicycle front fork shock absorption device is prone to air leakage or oil leakage, thereby affecting the normal riding of the bicycle.

[0006] The utility model is realized as follows:

[0007] A magnetic shock absorption rod for bicycles includes a cylinder. A guide washer is arranged at the front end inside the cylinder, and a tail plug is arranged at the rear end inside the cylinder. The guide washer and the tail plug are connected to the cylinder by bolts; a fixed magnet is arranged at one end of the tail plug facing the inside of the cylinder, and the fixed magnet is connected to the tail plug by a fixing screw; the front end opening of the cylinder is inserted with a piston rod, and a movable magnet is arranged inside the cylinder. The movable magnet is connected to the piston rod by a fixing screw; the ends of the movable magnet and the fixed magnet close to each other repel each other.

[0008] Preferably, both ends of the cylinder barrel are provided with ports, and a plurality of fixing holes are provided at a position near the top end on the side surface of the cylinder barrel.

[0009] Preferably, a stud is provided at the rear end of the tail plug, and the stud protrudes from the port at the rear end of the cylinder barrel; a first thread groove is provided at one end of the tail plug facing the inner side of the cylinder barrel; a plurality of first connection grooves are evenly provided on the side surface of the tail plug, and the first connection grooves are arranged in alignment with the fixing holes.

[0010] Preferably, a plurality of second connection grooves are provided on the side surface of the guiding washer, and the second connection grooves are arranged in alignment with the fixing holes; a sleeve hole is provided in the middle of the guiding washer.

[0011] Preferably, a counterbore is provided in the middle of the fixing magnet, and the fixing screw passes through the counterbore and is connected to the tail plug.

[0012] Preferably, a second thread groove is provided at the front end of the piston rod, and a third thread groove is provided at the rear end of the piston rod.

[0013] Preferably, a perforation is provided in the middle of the movable magnet, a slot is provided at the front end of the movable magnet, the rear end of the piston rod is inserted into the slot, and the fixing screw passes through the perforation and is in threaded connection with the third thread groove.

[0014] Preferably, a magnet protective sleeve is provided at the rear end of the movable magnet, a pressing hole is provided in the middle of the magnet protective sleeve, and the fixing screw passes through the pressing hole to press the magnet protective sleeve against the rear end of the movable magnet.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. A fixing magnet is installed at the rear end of the cylinder barrel of the present utility model, a piston rod is installed at the front end of the cylinder barrel, and a movable magnet is provided at one end of the piston rod inserted into the cylinder barrel. The mutually approaching ends of the movable magnet and the fixing magnet repel each other, so that the purpose of shock absorption can be achieved through the mutual repulsion principle of the magnets, and the shock absorption device with this structure will not have problems of air leakage or oil leakage, making the shock absorption device stable for the shock absorption of the bicycle and not affecting the normal use of the bicycle.

[0017] 2. The movable magnet of the present utility model can be protected by the magnet protective sleeve, thereby avoiding the problem that the movable magnet is severely worn, or the movable magnet collides with the fixing magnet and is damaged during excessive bumping, which in turn affects the normal use of the magnet. Description of the Drawings

[0018] Figure 1 is the schematic structural diagram of the whole of the present utility model;

[0019] Figure 2 is the schematic structural diagram of the cylinder barrel of the present utility model;

[0020] Figure 3 It is a structural schematic diagram of the tail plug of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the guide washer of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the utility model fixing magnet;

[0023] Figure 6 It is a schematic diagram of the structure of the piston rod of the utility model from an oblique downward angle of the front end;

[0024] Figure 7 It is a structural schematic diagram of the piston rod of the utility model at an oblique downward angle at the rear end;

[0025] Figure 8 It is a schematic diagram of the structure of the movable magnet of the utility model at the front oblique downward angle;

[0026] Figure 9 It is a schematic diagram of the structure of the movable magnet of the utility model at the rear end oblique downward angle;

[0027] Figure 10 It is a structural schematic diagram of a magnet protection cover of the utility model.

[0028] In the figure: 1, cylinder; 11, port; 12, fixing hole; 2, tail plug; 21, first thread groove; 22, first connecting groove; 23, stud; 3, guide washer; 31, sleeve hole; 32, second connecting groove; 4, fixed magnet; 41, countersunk hole; 5, fixing screw; 6, piston rod; 61, second thread groove; 62, third thread groove; 7, movable magnet; 71, slot; 72, perforation; 8, magnet protection cover; 81, pressing hole. DETAILED DESCRIPTION

[0029] 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.

[0030] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0031] Example 1

[0032] like Figure 1As shown in the figure, a magnetic shock absorber for a bicycle includes a cylinder barrel 1. A guiding washer 3 is provided at the front end inside the cylinder barrel 1, and the guiding washer 3 facilitates ensuring the stable forward and backward movement of the piston rod 6. A tail plug 2 is provided at the rear end inside the cylinder barrel 1, and the tail plug 2 facilitates plugging the opening at the rear end of the cylinder barrel 1. The guiding washer 3 and the tail plug 2 are connected to the cylinder barrel 1 by bolts; this structure can ensure the stable connection of the guiding washer 3 and the tail plug 2 to the cylinder barrel 1. One end of the tail plug 2 facing the inside of the cylinder barrel 1 is provided with a fixed magnet 4, and the fixed magnet 4 is connected to the tail plug 2 by a fixing screw 5; the fixed magnet 4 is convenient for cooperating with the movable magnet 7, thereby facilitating shock absorption. The front end opening of the cylinder barrel 1 is inserted with a piston rod 6, and a movable magnet 7 is provided inside the cylinder barrel 1. The movable magnet 7 is connected to the piston rod 6 by a fixing screw 5; the ends of the movable magnet 7 and the fixed magnet 4 that are close to each other repel each other; the piston rod 6 cooperates with the movable magnet 7. When the bicycle jolts, the piston rod is pressed down, and the movable magnet 7 and the fixed magnet 4 repel each other, thereby achieving the purpose of shock absorption.

[0033] As Figure 2 shown, both ends of the cylinder barrel 1 are provided with ports 11, and the ports 11 are convenient for the installation of the piston rod 6 and the tail plug 2. And a plurality of fixing holes 12 are provided at a position close to the top on the side of the cylinder barrel 1, and the fixing holes 12 are convenient for fixing the tail plug 2 and the guiding washer 3 by bolts.

[0034] As Figure 3 shown, a stud 23 is provided at the rear end of the tail plug 2, and the stud 23 protrudes from the port 11 at the rear end of the cylinder barrel 1; it is convenient for the tail plug 2 to be connected to external components. One end of the tail plug 2 facing the inside of the cylinder barrel 1 is provided with a first threaded groove 21; the first threaded groove 21 is convenient for the connection between the tail plug 2 and the fixed magnet 4. A plurality of first connection grooves 22 are evenly provided on the side of the tail plug 2, and the first connection grooves 22 are arranged in alignment with the fixing holes 12; this structure is for the purpose of conveniently fixing the tail plug 2 by bolts.

[0035] As Figure 4 shown, a plurality of second connection grooves 32 are provided on the side of the guiding washer 3, and the second connection grooves 32 are arranged in alignment with the fixing holes 12; the second connection grooves 32 are convenient for fixing the guiding washer 3 by bolts. A sleeve hole 31 is provided in the middle of the guiding washer 3, and the sleeve hole 31 is convenient for sleeving on the piston rod 6.

[0036] As Figure 5 shown, a counterbore 41 is provided in the middle of the fixed magnet 4, and the fixing screw 5 passes through the counterbore 41 and is connected to the tail plug 2, which is convenient for the stable installation of the fixed magnet 4.

[0037] As Figure 6 and Figure 7As shown, a second thread groove 61 is provided at the front end of the piston rod 6, and the second thread groove 61 facilitates the connection of the piston rod 6 with external components. A third thread groove 62 is provided at the rear end of the piston rod 6, and the third thread groove 62 facilitates the connection of the piston rod 6 with the fixing screw 5, so that the moving magnet 7 is stably connected to the piston rod 6.

[0038] As Figure 8 and Figure 9 shown, a through hole 72 is provided in the middle of the moving magnet 7, and a slot 71 is provided at the front end of the moving magnet 7. The rear end of the piston rod 6 is inserted into the slot 71, and the fixing screw 5 passes through the through hole 72 and is threadedly connected to the third thread groove 62; this structure facilitates the stable connection of the moving magnet 7 with the piston rod 6.

[0039] Working principle: When in use, the entire shock absorber is installed at the front fork position of the bicycle. When the bicycle bumps, the piston rod 6 is pressed and moves downward. When the piston rod 6 drives the moving magnet 7 to press down, it will repel the fixed magnet 4, which can effectively achieve the purpose of shock absorption. Compared with the prior art, in this application, the fixed magnet 4 is installed at the rear end of the cylinder barrel 1, the piston rod 6 is installed at the front end of the cylinder barrel 1, and a moving magnet 7 is provided at one end of the piston rod 6 inserted into the cylinder barrel 1. The mutually approaching ends of the moving magnet 7 and the fixed magnet 4 repel each other, so that the purpose of shock absorption can be achieved through the principle of mutual repulsion of the magnets, and the shock absorber with this structure will not have problems such as air leakage or oil leakage, making the shock absorber stable for the bicycle and not affecting the normal use of the bicycle.

[0040] Embodiment 2

[0041] As Figure 1 shown, a magnetic shock absorber for a bicycle includes a cylinder barrel 1. A guide washer 3 is provided at the front end inside the cylinder barrel 1, and the guide washer 3 facilitates ensuring the stable forward and backward movement of the piston rod 6. A tail plug 2 is provided at the rear end inside the cylinder barrel 1, and the tail plug 2 facilitates sealing the rear end opening of the cylinder barrel 1. The guide washer 3 and the tail plug 2 are connected to the cylinder barrel 1 by bolts; this structure can ensure the stable connection of the guide washer 3 and the tail plug 2 with the cylinder barrel 1. A fixed magnet 4 is provided at one end of the tail plug 2 facing the inside of the cylinder barrel 1, and the fixed magnet 4 is connected to the tail plug 2 by a fixing screw 5; the fixed magnet 4 facilitates cooperation with the moving magnet 7, thereby facilitating shock absorption. The front end opening of the cylinder barrel 1 is plugged with a piston rod 6, and a moving magnet 7 is provided inside the cylinder barrel 1. The moving magnet 7 is connected to the piston rod 6 by a fixing screw 5; the mutually approaching ends of the moving magnet 7 and the fixed magnet 4 repel each other; the piston rod 6 cooperates with the moving magnet 7. When the bicycle bumps, the piston rod presses down, and the moving magnet 7 and the fixed magnet 4 repel each other, thereby achieving the purpose of shock absorption.

[0042] As Figure 2As shown, both ends of the cylinder barrel 1 are provided with ports 11, which facilitate the installation of the piston rod 6 and the end plug 2. Moreover, a plurality of fixing holes 12 are provided at a position near the top end on the side of the cylinder barrel 1, which facilitate the fixing of the end plug 2 and the guide washer 3 through bolts.

[0043] As Figure 3 shown, a stud 23 is provided at the rear end of the end plug 2, and the stud 23 protrudes from the port 11 at the rear end of the cylinder barrel 1, facilitating the connection of the end plug 2 with external components. One end of the end plug 2 facing the inner side of the cylinder barrel 1 is provided with a first thread groove 21, which facilitates the connection between the end plug 2 and the fixing magnet 4. A plurality of first connection grooves 22 are evenly provided on the side of the end plug 2, and the first connection grooves 22 are arranged in alignment with the fixing holes 12. This structure is for the purpose of facilitating the fixing of the end plug 2 through bolts.

[0044] As Figure 4 shown, a plurality of second connection grooves 32 are provided on the side of the guide washer 3, and the second connection grooves 32 are arranged in alignment with the fixing holes 12. The second connection grooves 32 facilitate the fixing of the guide washer 3 through bolts. A sleeve hole 31 is provided in the middle of the guide washer 3, and the sleeve hole 31 is convenient for sleeving on the piston rod 6.

[0045] As Figure 5 shown, a counterbore 41 is provided in the middle of the fixing magnet 4, and the fixing screw 5 passes through the counterbore 41 and is connected to the end plug 2, facilitating the stable installation of the fixing magnet 4.

[0046] As Figure 6 and Figure 7 shown, a second thread groove 61 is provided at the front end of the piston rod 6, which facilitates the connection of the piston rod 6 with external components. A third thread groove 62 is provided at the rear end of the piston rod 6, which facilitates the connection of the piston rod 6 with the fixing screw 5, enabling the movable magnet 7 to be stably connected to the piston rod 6.

[0047] As Figure 8 and Figure 9 shown, a through hole 72 is provided in the middle of the movable magnet 7, and a slot 71 is provided at the front end of the movable magnet 7. The rear end of the piston rod 6 is inserted into the inside of the slot 71, and the fixing screw 5 passes through the through hole 72 and is threadedly connected to the third thread groove 62. This structure facilitates the stable connection of the movable magnet 7 to the piston rod 6.

[0048] As Figure 10 shown, a magnet protective sleeve 8 is provided at the rear end of the movable magnet 7, and a pressing hole 81 is provided in the middle of the magnet protective sleeve 8. The fixing screw 5 passes through the pressing hole 81 to press the magnet protective sleeve 8 against the rear end of the movable magnet 7. This structure of the magnet protective sleeve 8 can protect the movable magnet 7 from wear or collision damage with the fixing magnet 4, enabling the movable magnet 7 to be stably used.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A magnetic shock-absorbing rod for a bicycle, comprising a cylinder (1), characterized in that: A guide washer (3) is provided at the front end of the inner side of the cylinder barrel (1), and a tail plug (2) is provided at the rear end of the inner side of the cylinder barrel (1); the guide washer (3) and the tail plug (2) are connected to the cylinder barrel (1) by bolts; a fixed magnet (4) is provided at one end of the tail plug (2) facing the inner side of the cylinder barrel (1), and the fixed magnet (4) is connected to the tail plug (2) by a fixing screw (5); a piston rod (6) is inserted into the front end opening of the cylinder barrel (1), and a movable magnet (7) is provided on the inner side of the cylinder barrel (1), and the movable magnet (7) is connected to the piston rod (6) by a fixing screw (5); the movable magnet (7) and the fixed magnet (4) repel each other at their respective ends.

2. A magnetic shock absorber for bicycle according to claim 1, characterized in that: Ports (11) are provided at both ends of the cylinder (1), and a plurality of fixing holes (12) are provided on the side of the cylinder (1) near the top.

3. A magnetic shock absorber for bicycle according to claim 2, characterized in that: A stud (23) is provided at the rear end of the tail plug (2), and the stud (23) protrudes from the port (11) at the rear end of the cylinder barrel (1); a first thread groove (21) is provided at one end of the tail plug (2) facing the inner side of the cylinder barrel (1); and a plurality of first connecting grooves (22) are evenly arranged on the side surface of the tail plug (2), and the first connecting grooves (22) are arranged to align with the fixing holes (12).

4. A magnetic shock absorber for bicycle according to claim 2, characterized in that: A plurality of second connection grooves (32) are provided on the side of the guide washer (3), and the second connection grooves (32) are arranged to align with the fixing holes (12); and a sleeve hole (31) is provided in the middle of the guide washer (3).

5. The magnetic shock absorber rod for bicycle according to claim 1, characterized in that: A countersunk hole (41) is provided in the middle of the fixed magnet (4), and the fixed screw (5) passes through the countersunk hole (41) and is connected to the tail plug (2).

6. The magnetic shock absorber rod for bicycle according to claim 1, characterized in that: The front end of the piston rod (6) is provided with a second thread groove (61), and the rear end of the piston rod (6) is provided with a third thread groove (62).

7. A magnetic shock absorber for bicycle according to claim 6, characterized in that: A through hole (72) is provided in the middle of the movable magnet (7), a slot (71) is provided at the front end of the movable magnet (7), the rear end of the piston rod (6) is inserted into the slot (71), and the fixing screw (5) passes through the through hole (72) and is threadedly connected to the third thread groove (62).

8. A magnetic shock-absorbing rod for bicycle according to any one of claims 1 to 7, characterized in that: A magnet protection cover (8) is provided at the rear end of the movable magnet (7), a pressing hole (81) is provided in the middle of the magnet protection cover (8), and the fixing screw (5) passes through the pressing hole (81) to press the magnet protection cover (8) onto the rear end of the movable magnet (7).

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