Damping device for electric bicycle

Abstract

The utility model relates to the technical field of electric bicycles, and discloses a damping device for an electric bicycle, which comprises a telescopic sleeve, a limiting rod is fixedly connected in the telescopic sleeve, a first piston is movably sleeved in the telescopic sleeve, and a push rod is fixedly connected in the middle of one end of the first piston. A second damper is installed at the top end of the push rod, and a hydraulic oil flowing pipe is installed in the first piston. According to the damping device for the electric bicycle, a telescopic sleeve is filled with a buffer solution, a hydraulic oil flowing pipe is installed in a first piston, when the electric bicycle needs to be damped, after equipment is subjected to impact force, the first piston moves in the telescopic sleeve, and meanwhile hydraulic oil is output to the other side through the hydraulic oil flowing pipe; and the hydraulic oil effectively absorbs pressure generated by impact, so that the situation that the telescopic sleeve and the push rod are damaged due to the fact that the impact force is too large is avoided, and the service life of the damping equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric bicycle technical field, concretely is a shock absorber for electric bicycle. BACKGROUND

[0002] With the improvement of people's living standards, in addition to the use function, higher requirements are put forward for bicycles and electric vehicles, and safety and comfort are the goals pursued by consumers, traditional bicycles and electric vehicles can play a buffering role in poor road conditions, and a certain effect is achieved.

[0003] And usually install shock absorber on electric bicycle, shock absorber is used by spring and damping, make the comfort of riding through the way of reducing vibration when riding electric bicycle, however, when the vehicle shape is to the high area of slope, the vibration frequency is big, and the pressure generated when the vehicle is running is directly applied to the shock absorber, the instantaneous deformation of the shock absorber is caused by the large vibration, the instantaneous deformation will affect the internal structure of the shock absorber, thereby causing the fatigue damage of the shock absorber, and then affecting the service life of the shock absorber, thus, we propose a shock absorber for electric bicycle. UTILITY MODEL CONTENT

[0004] In view of the deficiency of the existing shock absorber for electric bicycle, the utility model provides a shock absorber for electric bicycle, which has the advantages that the inside of the telescopic sleeve is filled with hydraulic oil, when the vehicle is running and meets impact, the moving speed is reduced by hydraulic oil, thereby avoiding the instantaneous movement of the shock absorber when damping, resulting in the reduction of the service life of the shock absorber, the problem raised in the above background technology is solved.

[0005] The utility model provides the following technical scheme: a shock absorber for electric bicycle, including telescopic sleeve, the inside fixed connection of telescopic sleeve is limit rod, the inside movable sleeve joint of telescopic sleeve has first piston, the middle fixed connection of first piston one end has push rod, the top of push rod installs second damping, the inside installation of first piston has hydraulic oil flow pipe, the outside movable sleeve joint of telescopic sleeve has gasket.

[0006] Preferably, the hydraulic oil flow pipe comprises an outlet pipe, the outlet pipe is installed at both ends of the push rod, and the middle of the two groups of outlet pipes is fixedly connected with a limiting sleeve, the outside of the limiting sleeve is movably sleeved with a second piston, and the inner side of the outlet pipe is provided with a flow groove for driving hydraulic oil flow.

[0007] Preferably, the lower end of the telescopic sleeve is fixedly connected with an inlet pipe, the inlet pipe is in communication with the inside of the telescopic sleeve, and the inside of the telescopic sleeve is filled with hydraulic oil.

[0008] Preferably, the telescopic sleeve is externally provided with a sliding groove, and the gasket is internally provided with a sliding rod movably sleeved in the sliding groove.

[0009] Preferably, the gasket is provided at the lower end with a nut, and the nut is threadedly connected with the outer portion of the telescopic sleeve.

[0010] Preferably, the telescopic sleeve is provided at the lower end with a first damper, and the first damper is fixedly connected at the lower portion with a first mounting sleeve, and the second damper is provided at the top end with a second mounting sleeve, and the first mounting sleeve and the second mounting sleeve are mounted on the rear support of the electric bicycle.

[0011] Preferably, a spring is mounted between the second damper and the gasket, and the spring is arranged outside the push rod.

[0012] Compared with the prior shock-absorbing device for electric bicycles, the utility model has the following beneficial effects:

[0013] 1. The shock-absorbing device for electric bicycles, by filling the inside of the telescopic sleeve with buffer liquid, and by mounting a hydraulic oil flow pipe in the inside of the first piston, when the electric bicycle needs to be damped, after the equipment is impacted, the first piston moves in the inside of the telescopic sleeve, at the same time, the hydraulic oil is output to the other side through the hydraulic oil flow pipe, and the hydraulic oil effectively absorbs the pressure generated by the impact, thereby avoiding that the impact force is too large, causing the telescopic sleeve and the push rod to be damaged, thereby improving the service life of the damping equipment.

[0014] 2. The shock-absorbing device for electric bicycles, by mounting a spring between the gasket and the second damper, the spring provides damping function for the equipment, at the same time, when the equipment is installed, by rotating the nut, the nut pushes the gasket to move upward, that is, the gasket exerts pressure on the spring, that is, according to the different damping effects required, the elasticity accumulated in the spring can be adjusted, thereby improving the convenience during installation and use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the main sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the main top sectional structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of the A place of the utility model.

[0020] In the figure: 1, telescopic sleeve; 2, feeding pipe; 3, first damping; 4, first mounting sleeve; 5, sliding chute; 6, limiting rod; 7, first piston; 8, push rod; 9, second damping; 10, second mounting sleeve; 11, hydraulic oil flow pipe; 111, liquid outlet pipe; 112, limiting sleeve; 113, second piston; 114, flow-through groove; 12, gasket; 13, nut; 14, spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a damping device for electric bicycle, including telescopic sleeve 1, the inside fixed connection of telescopic sleeve 1 is connected with limiting rod 6, limiting rod 6 drives the position of first piston 7 in the inside of telescopic sleeve 1 to keep limited, improves its stability, the inside movable sleeve joint of telescopic sleeve 1 has first piston 7, the middle fixed connection of one end of first piston 7 has push rod 8, the top end of push rod 8 is installed with second damping 9, second damping 9 is used in conjunction with spring 14, plays the damping effect, the inside of first piston 7 is installed with hydraulic oil flow pipe 11, the outside movable sleeve joint of telescopic sleeve 1 has gasket 12, rotates nut 13, nut 13 adjusts the position of gasket 12 in the outside of telescopic sleeve 1, ensures that the elastic force generated by spring 14 is adjusted.

[0023] Please refer to Figure 4 and Figure 5The hydraulic oil flow pipe 11 comprises liquid outlet pipes 111 respectively installed at two ends of the push rod 8, the middle parts of the two groups of liquid outlet pipes 111 are fixedly connected with limiting sleeves 112, the outer parts of the limiting sleeves 112 are movably sleeved with second pistons 113, the inner sides of the liquid outlet pipes 111 are provided with flow grooves 114 for hydraulic oil flow, the hydraulic oil flow pipe 11 is installed in the first piston 7, and the inside of the telescopic sleeve 1 is filled with hydraulic oil, when the electric bicycle moves to a bumpy road section, the first piston 7 moves in the inside of the telescopic sleeve 1 under pressure, at the same time, the hydraulic oil exerts pressure on the second piston 113, the second piston 113 is controlled to be in contact with the inner wall of the liquid outlet pipe 111, the hydraulic oil can be discharged through the flow grooves 114, that is, by controlling the movement of the second piston 113, the flow rate of the hydraulic oil can be reduced, and then the movement speed of the first piston 7 in the telescopic sleeve 1 is reduced, so that the impact force is effectively avoided to be too large, the spring 14 is prevented from being damaged due to increased pressure.

[0024] Please refer to Figure 1 The lower end of the telescopic sleeve 1 is fixedly connected with the inlet pipe 2, the inlet pipe 2 is in communication with the inside of the telescopic sleeve 1, the inside of the telescopic sleeve 1 is filled with hydraulic oil, the inlet pipe 2 is installed outside the telescopic sleeve 1, and the inside of the telescopic sleeve 1 can be injected with hydraulic oil through the inlet pipe 2, the first piston 7 is arranged in the inside of the telescopic sleeve 1, when the equipment needs to be damped, the impact force generated by the hydraulic oil and the first piston 7 can be effectively reduced, so that the damping equipment is prevented from being damaged due to impact, the frictional resistance of the first piston 7 during movement is effectively reduced by the hydraulic oil, the wear degree of the first piston 7 is reduced, and the service life of the first piston 7 is prolonged.

[0025] Please refer to Figure 1 The outside of the telescopic sleeve 1 is provided with a sliding groove 5, the inner side of the gasket 12 is provided with a sliding rod, the sliding rod is movably sleeved in the inside of the sliding groove 5, the outside of the telescopic sleeve 1 is provided with the sliding groove 5, and the gasket 12 is arranged in the inside of the sliding groove 5, that is, the gasket 12 can keep stability when moving outside the telescopic sleeve 1.

[0026] Please refer to Figure 2 The lower end of the gasket 12 is provided with a nut 13, the nut 13 is threadedly connected with the outside of the telescopic sleeve 1, the nut 13 can drive the gasket 12 to move up and down by rotating the nut 13, and the elastic pressure generated by the compression of the spring 14 can be adjusted by adjusting the distance between the nut 13 and the second damper 9.

[0027] Please refer to Figure 1The lower end of the telescopic sleeve 1 is provided with a first damper 3, the lower part of the first damper 3 is fixedly connected with a first mounting sleeve 4, the top end of a second damper 9 is provided with a second mounting sleeve 10, the first mounting sleeve 4 and the second mounting sleeve 10 are mounted on the electric bicycle rear support, the first mounting sleeve 4 and the second mounting sleeve 10 are mounted on the electric bicycle through control, thereby improving the convenience during installation, meanwhile, the first damper 3 and the second damper 9 are respectively mounted on the end of the telescopic sleeve 1 and the push rod 8, and the buffering performance can be improved under the auxiliary cooperation of the spring 14.

[0028] Please refer to Figure 1 The spring 14 is arranged outside the push rod 8, the spring 14 is arranged between the second damper 9 and the gasket 12, when the equipment moves to a bumpy road section, the shock absorption performance can be improved under the elastic buffering and damping cooperation of the spring 14.

[0029] Working principle: when in use, hydraulic oil is injected into the telescopic sleeve 1 through the inlet pipe 2, meanwhile, the first mounting sleeve 4 and the second mounting sleeve 10 are mounted on the electric bicycle, the nut 13 is rotated, the gasket 12 is pushed upward by the nut 13, the spring 14 is adjusted in elasticity, meanwhile, the sliding groove 5 ensures that the position of the gasket 12 and the telescopic sleeve 1 remain stable, when the electric bicycle moves to a bumpy road section, the spring 14 can be damped under the cooperation of the second damper 9 and the first damper 3 after being impacted, meanwhile, the inside of the telescopic sleeve 1 is filled with hydraulic oil, that is, when the first piston 7 moves, the hydraulic oil further buffers and damps, the hydraulic oil is circulated through the hydraulic oil circulation pipe 11, thereby further protecting the damping equipment.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing device for electric bicycles, comprising a telescopic sleeve (1), the inside of the telescopic sleeve (1) is fixedly connected with a limiting rod (6), characterized in that: The interior movable sleeve of the telescopic sleeve (1) is connected with a first piston (7), the middle of one end of the first piston (7) is fixedly connected with a push rod (8), the top end of the push rod (8) is installed with a second damper (9), the interior of the first piston (7) is installed with a hydraulic oil flow pipe (11), and the exterior of the telescopic sleeve (1) is movably sleeved with a gasket (12).

2. The shock-absorbing device for an electric bicycle according to claim 1, characterized in that: The hydraulic oil flow pipe (11) comprises a liquid outlet pipe (111), the liquid outlet pipe (111) is installed at both ends of the push rod (8) respectively, the middle of the two groups of liquid outlet pipes (111) is fixedly connected with a limiting sleeve (112), the exterior of the limiting sleeve (112) is movably sleeved with a second piston (113), and the inner side of the liquid outlet pipe (111) is provided with a flow groove (114) for driving hydraulic oil flow.

3. The shock-absorbing device for electric bicycle according to claim 1, characterized in that: The lower end of the telescopic sleeve (1) is fixedly connected with an inlet pipe (2) outside, the inlet pipe (2) is in communication with the interior of the telescopic sleeve (1), and the interior of the telescopic sleeve (1) is filled with hydraulic oil.

4. The shock absorbing device for an electric bicycle according to claim 1, characterized in that: The exterior of the telescopic sleeve (1) is provided with a sliding groove (5), the inner side of the gasket (12) is installed with a sliding rod, and the sliding rod is movably sleeved in the interior of the sliding groove (5).

5. The shock absorbing device for an electric bicycle according to claim 1, wherein: The lower end of the gasket (12) is installed with a nut (13), and the nut (13) is in threaded connection with the exterior of the telescopic sleeve (1).

6. The shock absorbing device for an electric bicycle according to claim 1, wherein: The lower end of the telescopic sleeve (1) is installed with a first damper (3), the lower part of the first damper (3) is fixedly connected with a first mounting sleeve (4), the top end of the second damper (9) is installed with a second mounting sleeve (10), and the first mounting sleeve (4) and the second mounting sleeve (10) are installed on the rear support of the electric bicycle.

7. The shock absorbing device for an electric bicycle according to claim 1, characterized in that: A spring (14) is installed between the second damper (9) and the gasket (12), and the spring (14) is arranged outside the push rod (8).

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