Electric bicycle rear shock absorber with damping adjusting structure

Abstract

The utility model relates to the field of electric bicycle rear shock absorbers, and discloses an electric bicycle rear shock absorber with a damping adjusting structure, which comprises an outer sleeve and a lower flange, an inner cylinder is sleeved in the outer sleeve, a compensation valve is fixed at the bottom end of the inner cylinder, an oil return hole communicated with an inner cavity of the outer sleeve is processed on the upper portion of the outer wall of the outer sleeve, and a damping adjusting structure is arranged on the lower flange. A piston rod penetrates through the inner cylinder from the top, and the bottom end of the piston rod is fixedly sleeved with an adjuster. According to the electric bicycle rear shock absorber with the damping adjusting structure, the spring is arranged, when the piston rod horizontally rotates by 45 degrees, the blocking piece moves to the position of the valve hole, the flowing hole diameter of the valve hole is decreased accordingly, the oil flowing resistance of the piston rod in the stretching and retracting process is changed, and the stretching and retracting process of the spring is faster; the oil return speed in the oil return hole is reduced, the stretching and retracting process of the spring is slower, the damping structure is suitable for vibration buffering under the rugged road condition, and the problem that a fixed damping structure cannot adapt to different road conditions is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric bicycle rear shock absorber technical field, concretely is a kind of electric bicycle rear shock absorber with damping adjustment structure. BACKGROUND

[0002] Shock absorber is one of electric bicycle key components, can absorb and relieve the vibration caused by uneven road, protect the safety of vehicle and rider. Electric bicycle rear shock absorber usually adopts the form of spring and hydraulic system combination, provides elastic support by spring, and hydraulic damping system absorbs vibration energy, to reduce the shaking of vehicle in the process of driving.

[0003] The mainstream electric bicycle rear shock absorber on the market is mostly fixed damping design, that is, the damping value is set as a fixed value in production and manufacturing, and cannot be adjusted according to actual road conditions. When the road condition is relatively flat, excessive damping may cause the shock absorber to respond not in time, reducing the riding comfort. And on bumpy road, too small damping will cause vibration to be not fully relieved, increasing the burden of vehicle body and rider. Long-time vibration may even cause fatigue damage to vehicle frame and rear wheel assembly, shorten the service life of vehicle,

[0004] Therefore, an electric bicycle rear shock absorber with damping adjustment structure is needed to solve the above technical defects. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an electric bicycle rear shock absorber with damping adjustment structure to solve the problem that fixed damping structure cannot adapt to different road conditions in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electric bicycle rear shock absorber with damping adjustment structure, comprising an outer sleeve and a lower flange, an inner sleeve is sleeved in the inner part of the outer sleeve, a compensation valve is fixed at the bottom end of the inner sleeve, an oil return hole communicating with the inner cavity of the outer sleeve is processed on the upper part of the outer sleeve outer wall, a piston rod penetrates the top of the inner sleeve, an adjuster is fixedly sleeved at the bottom end of the piston rod, a flow valve is movably sleeved outside the adjuster, the adjuster and the flow valve can rotate relative to each other, four groups of baffle plates are welded outside the adjuster, four groups of valve holes are arranged inside the flow valve, an installation seat is fixedly connected to the bottom end of the outer sleeve, a lower flange is fixedly connected to the top end of the outer sleeve, and a lower sealing seat is fixedly connected to the top end of the lower flange.

[0007] As a further technical scheme of the utility model, the valve holes are arranged in four groups around the inside of the flow valve, and the baffle plates are square plates with a size smaller than the valve holes.

[0008] As a further technical scheme of the utility model, the lower sealing seat is externally fixed with a spring, the top end of the spring is fixedly sleeved with an upper sealing seat, and the top end of the upper sealing seat is fixedly connected with an upper flange.

[0009] As a further technical scheme of the utility model, the piston rod is externally fixed with a second gear, the second gear is movably connected to the bottom end inside the lower sealing seat, the left side of the second gear is meshedly connected with a first gear, the left side of the first gear is fixedly connected with an adjusting bolt, the adjusting bolt is assembled to the left side of the outer wall of the lower sealing seat, and a plurality of limiting holes are processed on the outer wall of the lower sealing seat.

[0010] As a further technical scheme of the utility model, the rod part of the adjusting bolt is welded with two groups of limiting pieces, and the limiting pieces are fixedly connected with a limiting bolt between the limiting pieces and the limiting holes.

[0011] As a further technical scheme of the utility model, the limiting holes are annularly distributed with eight groups on the left side wall of the lower sealing seat.

[0012] As a further technical scheme of the utility model, the bottom end of the outer sleeve is fixedly sleeved with a mounting seat, and the left side of the mounting seat is movably connected with the rear wheel of the electric bicycle.

[0013] As a further technical scheme of the utility model, the lower sealing seat is a cylindrical hollow seat made of metal material, and the size of the lower flange is larger than that of the lower sealing seat.

[0014] Compared with the prior art, the utility model has the advantages that the rear shock absorber of the electric bicycle with the damping adjusting structure can adjust the damping, avoid the problem of difficulty in controlling or loosening the adjusting angle, and is convenient to disassemble, assemble, and maintain without complex electric control.

[0015] (1) By setting the spring, piston rod, baffle and valve hole, the shock absorber adopts the design of manually adjusting the damping, when the piston rod is horizontally rotated by 45°, the baffle moves to the valve hole position, the flow diameter of the valve hole is reduced, the oil return flow rate in the oil return hole is limited, the oil flow resistance in the extension process of the piston rod is changed, when the damping is reduced, the extension process of the spring is faster, which is suitable for relatively gentle road conditions and improves the comfort of riding, when the damping is increased, the oil return speed in the oil return hole is reduced, and the extension process of the spring is slower, which is suitable for shock buffering in rugged road conditions, protects the vehicle body and the rider, and solves the problem that the traditional fixed damping structure cannot adapt to different road conditions.

[0016] (2) By setting the adjusting bolt, limiting bolt, limiting piece and limiting hole, the device adopts precise angle adjustment and limiting design, when the damping needs to be changed, the limiting bolt is first disassembled, then the adjusting bolt is rotated to adjust the rotation angle of the baffle and the valve hole, the angle of the valve hole adjustment is controlled through the position of the limiting hole, after the adjustment is completed, the limiting bolt is reinstalled, the limiting piece is locked to the limiting hole, the further rotation of the adjusting bolt is limited, so that the current damping state is stable, the adjustment angle is not easy to control or loose, and a complex electric control system is not needed;

[0017] (3) By setting the lower flange, outer sleeve, mounting seat and spring, the mounting seat at the bottom end of the shock absorber adopts movable connection design, the movable stroke of the spring is limited through the lower flange, and the overall installation stability is improved; when maintenance or replacement is needed, the maintenance can be completed only by simply disassembling the bottom end assembly, and the daily use requirement of the electric bicycle is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the utility model;

[0019] Figure 2 It is an outer sleeve front view sectional structure schematic diagram of the utility model;

[0020] Figure 3 It is a lower sealing seat side view sectional structure schematic diagram of the utility model;

[0021] Figure 4 It is an adjuster top view structural schematic diagram of the utility model.

[0022] In the drawing: 1, upper flange; 2, upper sealing seat; 3, spring; 4, piston rod; 5, adjusting bolt; 6, lower sealing seat; 7, lower flange; 8, outer sleeve; 9, mounting seat; 10, limiting bolt; 11, limiting piece; 12, limiting hole; 13, first gear; 14, second gear; 15, oil return hole; 16, inner sleeve; 17, flow valve; 18, adjuster; 19, compensation valve; 20, baffle; 21, valve hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with 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.

[0024] Please refer to Figures 1-4The utility model provides an embodiment: a damping adjusting structure's electric bicycle rear shock absorber, including outer sleeve 8 and lower flange 7, the inside sleeve joint of outer sleeve 8 has inner tube 16, and the bottom fixed of inner tube 16 has compensation valve 19, and the upper portion of outer sleeve 8 outer wall is processed with the oil return hole 15 of outer sleeve 8 inner chamber intercommunication, and the piston rod 4 is penetrated from the top of inner tube 16, and the bottom fixed sleeve joint of piston rod 4 has regulator 18, and the outside movable sleeve joint of regulator 18 has flow valve 17, and regulator 18 and flow valve 17 can relatively rotate, and the outside welding of regulator 18 four sets of baffle 20, and the inside setting of flow valve 17 four sets of valve hole 21,

[0025] Specifically, as Figure 1 、 Figure 2 and Figure 4 shown, when the piston rod 4 horizontal rotation 45 °, baffle 20 moves to valve hole 21 position, and the flow through aperture of valve hole 21 reduces along with it, by limiting the oil return flow rate in oil return hole 15, change the oil flow resistance in the telescopic process of piston rod 4, reduce the damping, the telescopic process of spring 3 is more rapid, is applicable to the road condition of relatively gentle, the comfort of riding is promoted, and when the damping increases, the oil return speed in oil return hole 15 reduces, and the telescopic process of spring 3 is more slow, is applicable to the shock buffering under the rugged road condition.

[0026] The outside fixed sleeve joint of piston rod 4 has second gear 14, and second gear 14 is movably connected at the bottom end inside lower sealing seat 6, and the left side of second gear 14 is engagedly connected with first gear 13, and the left side of first gear 13 is fixedly connected with adjusting bolt 5, and adjusting bolt 5 is assembled at the left side of the outer wall of lower sealing seat 6, and a plurality of limiting holes 12 are processed on the outer wall of lower sealing seat 6, and two sets of limiting pieces 11 are welded on the outer wall of the rod part of adjusting bolt 5, and limiting bolt 10 is fixedly connected between limiting piece 11 and limiting hole 12, and eight sets of limiting holes 12 are annularly distributed on the left side wall of lower sealing seat 6.

[0027] Specifically, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, when needing to change the damping, first dismounting limiting bolt 10, then rotating adjusting bolt 5 to adjust the rotation angle of baffle 20 and valve hole 21, the angle of valve hole 21 adjustment is controlled through the position of limiting hole 12, after adjusting, reinstalling limiting bolt 10, locking limiting piece 11 to limiting hole 12, limiting the further rotation of adjusting bolt 5, so that the current damping state is stabilized.

[0028] The bottom end of the outer sleeve 8 is fixedly sleeved with a mounting seat 9, the left side of the mounting seat 9 is movably connected with a rear wheel of the electric bicycle, the lower sealing seat 6 is a cylindrical hollow seat made of metal material, the size of the lower flange 7 is larger than that of the lower sealing seat 6, the outer part of the lower sealing seat 6 is fixedly sleeved with a spring 3, the top end of the spring 3 is fixedly sleeved with an upper sealing seat 2, the top end of the upper sealing seat 2 is fixedly connected with an upper flange 1, the bottom end of the outer sleeve 8 is fixedly connected with the mounting seat 9, the top end of the outer sleeve 8 is fixedly connected with the lower flange 7, the top end of the lower flange 7 is fixedly connected with the lower sealing seat 6, four groups of valve holes 21 are arranged around the inside of the flow-through valve 17, and the baffle 20 is a square piece and has a size smaller than that of the valve hole 21.

[0029] Specifically, as shown in Figure 1 and Figure 2 The mounting seat 9 at the bottom end of the shock absorber is movably connected, the movable stroke of the spring 3 is limited through the lower flange 7, the installation stability is improved, and when maintenance or replacement is needed, the maintenance can be completed by simply disassembling the bottom end assembly.

[0030] Working principle: during the driving of the vehicle, when the wheel encounters a bumpy road, the vibration is transmitted to the piston rod 4 through the frame, the extension and contraction of the piston rod 4 drives the hydraulic medium to flow in the inner cylinder 16, the hydraulic medium flows through the flow-through valve 17, the compensation valve 19 and the oil return hole 15, when the damping adjustment is not performed, the oil flow is relatively smooth, the vibration energy is rapidly transmitted to the spring 3 to be absorbed, when the piston rod 4 rotates to drive the baffle 20 to move to the valve hole 21, the flow diameter of the valve hole 21 is reduced, the flow of the hydraulic medium is limited, at this time, the vibration energy is partially dissipated when passing through the oil flow path, thereby reducing the energy transmitted to the spring 3, when the damping needs to be changed, the limiting bolt 10 is disassembled first, then the adjusting bolt 5 is rotated to adjust the rotation angle of the baffle 20 and the valve hole 21, the angle of the valve hole 21 is adjusted by the position of the limiting hole 12, after the adjustment is completed, the limiting bolt 10 is reinstalled, the limiting piece 11 is locked to the limiting hole 12, the further rotation of the adjusting bolt 5 is limited, thereby stabilizing the current damping state, when the piston rod 4 is horizontally rotated by 45°, the baffle 20 moves to the valve hole 21, the flow diameter of the valve hole 21 is reduced, the oil return flow rate in the oil return hole 15 is limited, the oil flow resistance of the piston rod 4 in the extension and contraction process is changed, when the damping is reduced, the extension and contraction process of the spring 3 is faster, which is suitable for relatively gentle road conditions, and the riding comfort is improved, when the damping is increased, the oil return speed in the oil return hole 15 is reduced, the extension and contraction process of the spring 3 is slower, which is suitable for vibration buffering in rugged road conditions.

[0031] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An electric bicycle rear shock absorber with damping adjustment structure, comprising an outer sleeve (8) and a lower flange (7), characterized in that: The outer sleeve (8) is internally sleeved with an inner sleeve (16), the bottom end of the inner sleeve (16) is fixedly provided with a compensation valve (19), the outer wall of the outer sleeve (8) is processed with an oil return hole (15) which is communicated with the inner cavity of the outer sleeve (8), the inner sleeve (16) is penetrated from the top with a piston rod (4), the bottom end of the piston rod (4) is fixedly sleeved with an adjuster (18), the outer part of the adjuster (18) is movably sleeved with a flow valve (17), the adjuster (18) and the flow valve (17) can rotate relative to each other, the outer part of the adjuster (18) is welded with four sets of baffle plates (20), the inner part of the flow valve (17) is provided with four sets of valve holes (21), the bottom end of the outer sleeve (8) is fixedly connected with a mounting seat (9), the top end of the outer sleeve (8) is fixedly connected with a lower flange (7), the top end of the lower flange (7) is fixedly connected with a lower sealing seat (6).

2. The electric bicycle rear shock absorber with damping adjustment structure according to claim 1, characterized in that: The valve hole (21) is provided with four sets around the inner part of the flow valve (17), the baffle plate (20) is a square plate and its size is smaller than that of the valve hole (21).

3. The electric bicycle rear shock absorber with damping adjustment structure according to claim 1, characterized in that: The outer part of the lower sealing seat (6) is fixedly sleeved with a spring (3), the top end of the spring (3) is fixedly sleeved with an upper sealing seat (2), the top end of the upper sealing seat (2) is fixedly connected with an upper flange (1).

4. The electric bicycle rear shock absorber with damping adjustment structure according to claim 1, characterized in that: The outer part of the piston rod (4) is fixedly sleeved with a second gear (14), the second gear (14) is movably connected to the inner bottom end of the lower sealing seat (6), the left side of the second gear (14) is meshingly connected with a first gear (13), the left side of the first gear (13) is fixedly connected with an adjusting bolt (5), the adjusting bolt (5) is assembled on the left side of the outer wall of the lower sealing seat (6), a plurality of limiting holes (12) are processed on the outer wall of the lower sealing seat (6).

5. The electric bicycle rear shock absorber with damping adjustment structure according to claim 4, characterized in that: The rod part of the adjusting bolt (5) is welded with two sets of limiting plates (11), the limiting plates (11) and the limiting holes (12) are fixedly connected with a limiting bolt (10).

6. The electric bicycle rear shock absorber with damping adjustment structure according to claim 4, characterized in that: There are eight sets of limiting holes (12) annularly distributed on the left side wall of the lower sealing seat (6).

7. The electric bicycle rear shock absorber with damping adjustment structure according to claim 1, characterized in that: The bottom end of the outer sleeve (8) is fixedly sleeved with a mounting seat (9), the left side of the mounting seat (9) is movably connected with the rear wheel of the electric bicycle.

8. The electric bicycle rear shock absorber with damping adjustment structure according to claim 1, characterized in that: The lower sealing seat (6) is a cylindrical hollow seat made of metal material, the size of the lower flange (7) is larger than that of the lower sealing seat (6).

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