CN220315218U - Electric vehicle front fork with shock-absorbing function - Google Patents

Abstract

The utility model discloses an electric vehicle front fork with a damping function, which comprises a fork shoulder, a fixed sleeve arranged at the top of the fork shoulder, and an inner shaft symmetrically arranged at the bottom of the fork shoulder, wherein the bottom of the inner shaft is also provided with a sleeve, the bottom of the inner shaft is slidably arranged in the sleeve, a piston is fixed on the side wall of the bottom of the inner shaft, hydraulic oil is arranged in the sleeve, a plurality of damping holes are formed in the piston, a T-shaped groove is further formed in the bottom of the inner shaft, a T-shaped rod is slidably arranged in the T-shaped groove, one end of the first damping spring is fixedly arranged at the top of the T-shaped groove, the other end of the first damping spring is fixedly arranged at the top of the T-shaped rod, a second damping spring is sleeved on the outer wall of the T-shaped rod, and is positioned in the sleeve, and the damping springs are combined to improve the damping effect of the front fork, so that larger reverse elasticity is prevented from being generated when the compression amount of the single spring is too large.

Description

Electric vehicle front fork with shock-absorbing function

Technical Field

The utility model relates to an electric vehicle front fork, in particular to an electric vehicle front fork with a damping function.

Background

Electric vehicles, i.e. electrically driven vehicles, are also known as electrically driven vehicles. Electric vehicles are classified into ac electric vehicles and dc electric vehicles. In general, an electric vehicle uses a battery as an energy source, and converts electric energy into mechanical energy to move through a controller, a motor and other components, so as to control the current magnitude and change the speed. The front fork is one of the parts of the electric vehicle, the front fork is positioned at the front part in the structure of the electric vehicle, the upper end of the front fork is connected with the handle bar part, the frame part is matched with the front tube, and the lower end of the front fork is matched with the front shaft part to form a guiding system of the bicycle.

The front fork slides in the sleeve through the interior axle often, thereby sets up damper in the sleeve and realizes the absorbing function, and current shock attenuation front fork generally only adopts a spring to move away to avoid possible earthquakes, and its effect of moving away to avoid possible earthquakes is relatively poor, and when the spring compression volume that is used for the shock attenuation is too big, it can produce great reverse elasticity, not only plays the absorbing effect and still can influence the stability that the electric motor car was gone to influence the holistic shock attenuation effect of electric motor car, put forward a solution below the above problem.

Disclosure of Invention

The utility model aims to provide an electric vehicle front fork with a damping function, which solves the problems that the existing electric vehicle front fork is damped by adopting a single spring, the damping effect is poor, and when the compression amount of the spring is too large, larger reverse elasticity is generated, so that the stability of the electric vehicle is influenced.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides an electric motor car front fork with shock-absorbing function, includes the fork shoulder, installs at the fixed cover and the symmetry of fork shoulder top and installs the interior axle in fork shoulder bottom, interior axle bottom still is equipped with the sleeve, the bottom of interior axle slides and sets up in the sleeve, be fixed with the piston on the bottom lateral wall of interior axle, be equipped with hydraulic oil in the sleeve, a plurality of damping holes have been seted up on the piston, T type groove has still been seted up to the bottom of interior axle, the T type inslot is slided and is provided with T type pole, T type inslot portion wears out T type groove and slides and set up inside the sleeve, T type inslot portion still is equipped with damping spring one, damping spring one end is fixed at T type inslot portion, damping spring one other end is fixed at T type pole top, still the cover is equipped with damping spring two on the outer wall of T type pole, damping spring two is located inside the sleeve.

Preferably, the top of the sleeve is in threaded fit with a sealing cover, one end of the inner shaft penetrates through the sealing cover and is arranged in the sleeve in a sliding mode, and an oil seal is arranged at the joint of the sealing cover and the inner shaft.

Preferably, the inner shaft is further sleeved with a damping spring III, one end of the damping spring III is arranged at the bottom of the fork shoulder, and the other end of the damping spring III is arranged at the top of the sealing cover.

Preferably, a clamping groove is further formed in the inner bottom wall of the sleeve, and the bottom of the T-shaped rod is arranged in the clamping groove.

Preferably, a fork bridge is mounted between the two sleeves.

The beneficial effects are that: the damping effect of the front fork is improved by the cooperation among the first damping spring, the second damping spring and the third damping spring, and the damping effect is prevented from being influenced by larger reverse elasticity generated when the compression amount of the springs is too large when the single spring is adopted for damping;

the hydraulic oil is matched with the piston damping hole, so that the impact buffering effect is reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

fig. 2 is a schematic view for showing the internal structure of the sleeve.

Reference numerals: 1. fork shoulders; 2. a fixed sleeve; 3. an inner shaft; 4. a sleeve; 5. a piston; 6. a damping hole; 7. a T-shaped groove; 8. a T-shaped rod; 9. a damping spring I; 10. damping spring II; 11. sealing cover; 12. an oil seal; 13. damping springs III; 14. a clamping groove; 15. and a fork bridge.

Detailed Description

The following description is only of the preferred embodiments of the present utility model, and the scope of the present utility model should not be limited to the examples, but should be construed as falling within the scope of the present utility model. It should also be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present utility model are intended to be comprehended within the scope of the present utility model.

See fig. 1 to 2, an electric vehicle front fork with damping function, comprising a fork shoulder 1, a fixed sleeve 2 arranged at the top of the fork shoulder 1, and an inner shaft 3 symmetrically arranged at the bottom of the fork shoulder 1, wherein the bottom of the inner shaft 3 is also provided with a sleeve 4, the bottom of the inner shaft 3 is slidably arranged in the sleeve 4, and a fork bridge 15 is arranged between the two sleeves 4.

When the electric motor car shakes, the inner shaft 3 can move downwards relative to the sleeve 4, the T-shaped groove 7 is further formed in the bottom of the inner shaft 3, the T-shaped rod 8 is arranged in the T-shaped groove 7 in a sliding mode, the inner shaft 3 can push the T-shaped rod 8 to slide in the T-shaped groove 7 in the sliding process, the bottom of the T-shaped rod 8 penetrates out of the T-shaped groove 7 and is arranged inside the sleeve 4 in a sliding mode, the clamping groove 14 is further formed in the inner bottom wall of the sleeve 4, the bottom of the T-shaped rod 8 is arranged in the clamping groove 14, the bottom of the T-shaped rod 8 is positioned through the clamping groove 14, the first damping spring 9 is further arranged in the T-shaped groove 7, one end of the first damping spring 9 is fixed at the top of the T-shaped groove 7, the other end of the first damping spring 9 is fixed at the top of the T-shaped rod 8, and the first damping spring 9 is pushed by the T-shaped rod 8 to be compressed, and accordingly primary damping is achieved.

The outer wall of the T-shaped rod 8 is further sleeved with a second damping spring 10, the second damping spring 10 is located inside the sleeve 4, when the T-shaped rod 8 slides in the T-shaped groove 7, the bottom of the inner shaft 3 can squeeze the second damping spring 10, and the second damping spring 10 can be compressed, so that secondary damping is achieved.

The piston 5 is fixed on the bottom side wall of the inner shaft 3, hydraulic oil is arranged in the sleeve 4, the inner shaft 3 can drive the piston 5 to slide in the sleeve 4, a plurality of damping holes 6 are formed in the piston 5, the damping holes 6 are small holes or micro holes, hydraulic oil can be extruded in the sliding process of the piston 5, the hydraulic oil can enter the damping holes 6, the damping holes 6 play a damping role on the hydraulic oil, the sliding distance of the inner shaft 3 in the sleeve 4 is reduced, compression of the damping spring II 10 and the damping spring I9 is reduced, and larger reverse elasticity cannot be generated in the rebound process, so that the impact on a vehicle body is avoided.

The screw thread fit at the top of sleeve 4 has sealed lid 11, the one end of interior axle 3 runs through sealed lid 11 and slides and set up inside sleeve 4, thereby sealed lid 11 and interior junction of interior axle 3 install oil blanket 12, thereby with the inside guard action that plays of sleeve 4 through sealed lid 11 and oil blanket 12, prevent external impurity dust to enter into and cause the jam to damping hole 6 in sleeve 4, the inside hydraulic oil of sleeve 4 also needs periodic replacement or filtration to prevent inside to leave impurity, still cover on the interior axle 3 is equipped with damping spring three 13, the one end of damping spring three 13 is installed in fork shoulder 1 bottom, damping spring three 13's the other end is installed at sealed lid 11 top, thereby the interior axle 3 still can extrude damping spring three 13 at gliding in-process, thereby damping spring three 13 can receive the compression, thereby improve the shock attenuation effect of front fork through the cooperation between damping spring one 9, damping spring two 10 and damping spring three 13 a plurality of springs, also prevent that when the spring compression volume is too big can produce great reverse elasticity when adopting single spring to carry out the shock attenuation thereby influence the shock attenuation effect.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

Claims (5)

1. The utility model provides an electric motor car front fork with shock-absorbing function, includes fork shoulder (1), installs fixed cover (2) and the symmetry of fork shoulder (1) top and installs interior axle (3) in fork shoulder (1) bottom, its characterized in that, interior axle (3) bottom still is equipped with sleeve (4), the bottom slip setting of interior axle (3) is in sleeve (4), be fixed with piston (5) on the bottom lateral wall of interior axle (3), be equipped with hydraulic oil in sleeve (4), a plurality of damping holes (6) have been seted up on piston (5), T type groove (7) have still been seted up to the bottom of interior axle (3), interior sliding in T type groove (7) is provided with T type pole (8), T type groove (7) and sliding arrangement are inside sleeve (4), the inside damping spring (9) that still is equipped with of T type groove (7), the one end of damping spring (9) is fixed at T type groove (7) top, the other end of damping spring (9) is fixed at T type pole (8) and is located two shock-absorbing spring (10) inside two, two damping spring (10) are located on the interior wall of T type pole (8).

2. An electric vehicle front fork with damping function according to claim 1, characterized in that the top of the sleeve (4) is in threaded fit with a sealing cover (11), one end of the inner shaft (3) penetrates through the sealing cover (11) and is arranged inside the sleeve (4) in a sliding manner, and an oil seal (12) is arranged at the joint of the sealing cover (11) and the inner shaft (3).

3. The electric vehicle front fork with the shock absorption function according to claim 2, wherein the inner shaft (3) is further sleeved with a shock absorption spring III (13), one end of the shock absorption spring III (13) is installed at the bottom of the fork shoulder (1), and the other end of the shock absorption spring III (13) is installed at the top of the sealing cover (11).

4. The electric vehicle front fork with the shock absorption function according to claim 1, wherein a clamping groove (14) is further formed in the inner bottom wall of the sleeve (4), and the bottom of the T-shaped rod (8) is arranged in the clamping groove (14).

5. An electric vehicle front fork with damping function according to claim 1, characterized in that a fork bridge (15) is mounted between the two sleeves (4).