Electric vehicle front fork damping device

Abstract

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle front fork damping device which comprises a vehicle head vertical rod, a front fork shoulder is fixedly connected to the lower end face of the vehicle head vertical rod, two connecting rods are arranged on the lower side of the front fork shoulder, and damping mechanisms are arranged between the two connecting rods and the front fork shoulder. The damping mechanism comprises a sleeve fixedly connected to the upper end face of the connecting rod, the sleeve is filled with hydraulic oil, the lower end face of the front fork shoulder is fixedly connected with a piston rod in sliding connection with the sleeve, the outer wall of the sleeve is fixedly connected with a limiting ring, and the upper end face of the limiting ring is fixedly connected with a spring connected to the outer wall of the sleeve in a sleeving mode. The second piston is driven to rotate by rotating the threaded rod, the overlapping degree of the first through hole and the second through hole is adjusted, hydraulic oil circulation damping is flexibly changed, meanwhile, the threaded sleeve is matched for independently adjusting the pre-tightening force of the spring, soft and hard damping modes can be rapidly switched according to different road conditions, and riding adaptability and comfort are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motor car technical field, specifically disclose electric motor car front fork damping device. BACKGROUND

[0002] Shock absorber is used to restrain the shock and impact from the road when the spring rebounds after absorbing the shock, the electric motor car shock absorber accelerates the attenuation of the vibration of the frame and the body during use to improve the riding comfort of the electric motor car, and the electric motor car shock absorber plays an important role in the overall safety and comfort of the electric motor car during use.

[0003] The existing front fork damping device of the electric vehicle cannot adjust the damping device according to the actual road conditions, and the damping effect is relatively single, so it is difficult to meet the needs of different groups of people, therefore, an electric motor car front fork damping device is needed to solve this problem. INVENTION CONTENTS

[0004] The utility model discloses electric motor car front fork damping device, through adjustable damping structure and synchronous spring pre -tension force design, realized electric motor car front fork damping effect's flexible adjustment, improved the riding adaptability and convenient operation.

[0005] The utility model discloses electric motor car front fork damping device, through adjustable damping structure and synchronous spring pre -tension force design, realized electric motor car front fork damping effect's flexible adjustment, improved the riding adaptability and convenient operation.

[0006] As the electric motor car front fork damping device of the utility model is preferred, the upper end of the outer wall of the piston rod is threadedly connected with a threaded sleeve, and the upper end of the spring abuts against the lower end surface of the threaded sleeve.

[0007] As a preferred embodiment of the electric vehicle front fork shock absorption device of this utility model, the upper end of the rotating shaft extends to the top of the front fork shoulder and is fixedly connected to a turntable. The upper end face of one of the turntables is rotatably connected to a first rotating block via a coupling shaft. The upper end face of the front fork shoulder is rotatably connected to a second rotating block via a coupling shaft. The inner wall of the second rotating block is threadedly connected to a threaded rod, and the rear end of the threaded rod is rotatably connected to the first rotating block.

[0008] As a preferred embodiment of the electric vehicle front fork shock absorption device of this utility model, the upper surfaces of the two turntables are rotatably connected to a connecting rod via a coupling.

[0009] As a preferred embodiment of the electric vehicle front fork shock absorption device of this utility model, both of the upper end faces of the two threaded sleeves are fixedly connected to synchronous pulleys, and the two synchronous pulleys are connected by synchronous belt drive.

[0010] As a preferred embodiment of the electric vehicle front fork shock absorption device of this utility model, the outer wall of the first piston is fixedly connected with two symmetrically distributed limiting blocks, and the inner wall of the sleeve is provided with two limiting grooves that are slidably connected to the limiting blocks.

[0011] As a preferred embodiment of the electric vehicle front fork shock absorption device of this utility model, the front end of the threaded rod is fixedly connected to a first limiting plate, and the outer wall of the threaded rod is fixedly connected to a second limiting plate located behind the second rotating block.

[0012] The beneficial effects of this utility model are:

[0013] 1. By rotating the threaded rod to drive the second piston to rotate, the overlap between the first and second through holes can be adjusted, flexibly changing the hydraulic oil flow damping. At the same time, in conjunction with the threaded sleeve to independently adjust the spring preload, the soft and hard shock absorption modes can be quickly switched for different road conditions (such as bumpy roads or flat roads), significantly improving riding adaptability and comfort.

[0014] 2. The design of double turntables with linkage and double threaded sleeves with synchronous belt drive ensures that the parameters of the damping mechanism on both sides (damping strength and spring force) are adjusted synchronously, avoiding uneven force caused by unilateral adjustment; combined with the self-locking structure of the threaded rod and the limit plate, it can accurately control the damping range and fix the adjustment state, enhancing practicality while reducing the complexity of operation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1The overall structural view of the electric vehicle front fork damping device.

[0017] Figure 2 The front view of the electric vehicle front fork damping device.

[0018] Figure 3 The utility model discloses Figure 2 The enlarged view of A in the middle.

[0019] Figure 4 The utility model discloses Figure 2 The enlarged view of B in the middle.

[0020] Figure 5 The utility model discloses Figure 1 The enlarged view of C in the middle.

[0021] Figure 6 The structure diagram of the screw rod.

[0022] In the figure, 1 is a head post, 2 is a front fork shoulder, 3 is a connecting rod, 4 is a sleeve, 5 is a piston rod, 6 is a spring, 7 is a first piston, 8 is a rotating shaft, 9 is a second piston, 10 is a first through hole, 11 is a second through hole, 12 is a limiting block, 13 is a limiting groove, 14 is a rotating disc, 15 is a connecting rod, 16 is a first rotating block, 17 is a second rotating block, 18 is a screw rod, 19 is a first limiting plate, 20 is a second limiting plate, 21 is a threaded sleeve, 22 is a synchronous pulley, and 23 is a limiting ring. Specific implementation

[0023] The utility model will be further explained in connection with the drawings and specific embodiments, to help understanding the content of the utility model. The method used in the utility model is conventional if no special provision, and the raw materials and devices used are conventional if no special provision, and are conventional market products.

[0024] Please refer to Figures 1-6The utility model provides an electric car front fork damping device, including the vertical rod 1 of car head, the lower end surface of vertical rod 1 is fixedly connected with the front fork shoulder 2, the downside of front fork shoulder 2 is provided with two connecting rods 3, and the damping mechanism is arranged between two connecting rods 3 and front fork shoulder 2, and the damping mechanism includes the sleeve 4 fixedly connected on the upper end surface of connecting rod 3, the inside of sleeve 4 is filled with hydraulic oil, the lower end surface of front fork shoulder 2 is fixedly connected with the piston rod 5 slidingly connected with sleeve 4, the outer wall of sleeve 4 is fixedly connected with the spring 6 of sleeveing in the outer wall of sleeve 4, the lower end surface of piston rod 5 is fixedly connected with the first piston 7 in the inside of sleeve 4, and the outer wall of first piston 7 is penetrated and set up with multiple first through -holes 10 of circumferential distribution, and the inner wall of piston rod 5 is rotatably connected with the pivot 8, and the lower end of pivot 8 extends to the below of first piston 7 and is fixedly connected with the second piston 9, and the outer wall of second piston 9 is penetrated and set up with multiple second through -holes 11, and the specification size of second through -hole 11 is same with first through -hole 10, and the number is one -to -one correspondence.

[0025] In the embodiment: when the wheel vibrates, first piston 7 and second piston 9 move up and down in sleeve 4, and the damping of hydraulic oil passing through first through -hole 10 and second through -hole 11 is generated, thereby reducing vibration, and the spring 6 is further used to reduce vibration and reset between sleeve 4 and piston rod 5, and the pivot 8 is rotated, and the pivot 8 drives the rotation of second piston 9, and then drives the rotation of second through -hole 11, so that second through -hole 11 is staggered or aligned with first through -hole 10, thereby reducing or increasing the damping effect of hydraulic oil passing through, thereby facilitating the adjustment of damping effect according to road conditions, and having high practicability.

[0026] As a technical optimization scheme of the utility model, the upper end of the outer wall of the piston rod 5 is threadedly connected with a threaded sleeve 21, and the upper end of the spring 6 abuts against the lower end surface of the threaded sleeve 21.

[0027] In the embodiment: the threaded sleeve 21 is rotated, and the threaded sleeve 21 moves upward or downward along the piston rod 5, thereby adjusting the spring force of the spring 6, thereby facilitating further adjustment of the damping effect.

[0028] As a technical optimization scheme of the utility model, the upper end of the pivot 8 extends above the front fork shoulder 2 and is fixedly connected with a rotating disc 14, the upper end surface of one of the rotating discs 14 is rotatably connected with a first rotating block 16 through a connecting shaft, the upper end surface of the front fork shoulder 2 is rotatably connected with a second rotating block 17 through a connecting shaft, the inner wall of the second rotating block 17 is threadedly connected with a threaded rod 18, and the rear end of the threaded rod 18 is rotatably connected with the first rotating block 16.

[0029] In the embodiment, the threaded rod 18 is rotated, the threaded rod 18 drives the rotating disc 14 to rotate through the first rotating block 16 and the second rotating block 17, thereby conveniently adjusting the damping effect, and the utility model discloses through the use of the self-locking of the threaded rod 18 and the second rotating block 17, the rotating disc 14 is conveniently rotated and fixed.

[0030] As a technical optimization scheme of the utility model, the upper end faces of the two rotating discs 14 are rotationally connected with connecting rods 15 through connecting shafts.

[0031] In the embodiment, the connecting rods 15 facilitate synchronous rotation of the two rotating discs 14.

[0032] As a technical optimization scheme of the utility model, the upper end faces of the two threaded sleeves 21 are fixedly connected with synchronous pulleys 22, and the two synchronous pulleys 22 are drivingly connected through a synchronous belt.

[0033] In the embodiment, the synchronous belt and the synchronous pulley 22 cooperate to facilitate synchronous rotation of the two threaded sleeves 21.

[0034] As a technical optimization scheme of the utility model, the outer wall of the first piston 7 is fixedly connected with two symmetrically distributed limiting blocks 12, and the inner wall of the sleeve 4 is provided with two limiting grooves 13 that are slidingly connected with the limiting blocks 12.

[0035] In the embodiment, the limiting block 12 and the limiting groove 13 cooperate to facilitate limiting of the piston rod 5 and prevent the piston rod 5 from rotating.

[0036] As a technical optimization scheme of the utility model, the front end of the threaded rod 18 is fixedly connected with a first limiting plate 19, and the outer wall of the threaded rod 18 is fixedly connected with a second limiting plate 20 located behind the second rotating block 17.

[0037] In the embodiment, the first limiting plate 19 and the second limiting plate 20 facilitate limiting of the rotation angle of the rotating disc 14, when the threaded rod 18 is rotated to make the second limiting plate 20 abut against the rear end face of the second rotating block 17, the first through hole 10 is aligned with the second through hole 11, and the damping effect is minimum, when the threaded rod 18 is rotated to make the first limiting plate 19 abut against the front end face of the second rotating block 17, the first through hole 10 is just misaligned with the second through hole 11, and at this time, the damping effect is maximum.

[0038] The working principle and use process of the utility model: when adjusting the damping effect, first rotate the threaded rod 18, the threaded rod 18 drives the rotating disc 14 to rotate through the first rotating block 16 and the second rotating block 17, and then drives another rotating disc 14 to rotate synchronously through the connecting rod 15, and then drives two rotating shafts 8 to rotate synchronously, the rotating shaft 8 further drives the second piston 9 to rotate, and then drives the second through hole 11 to rotate, so that the second through hole 11 is staggered or aligned with the first through hole 10, and then the damping effect of the hydraulic oil when passing through is reduced or increased, then rotate one of the threaded sleeves 21, and then drive the other threaded sleeve 21 to rotate synchronously through the synchronous belt and the synchronous pulley 22, the threaded sleeve 21 moves upwards or downwards along the piston rod 5, and then the spring 6 is adjusted, so that the damping effect is adjusted according to the road condition, and the utility model has high practicability.

[0039] In the description of the utility model, it is understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0040] The above-mentioned is only a specific embodiment of the utility model, and cannot limit the scope of the utility model, so the replacement of equivalent components or equivalent changes and modifications made according to the utility model patent protection range should still belong to the scope covered by the utility model claim.

Claims

1. An electric vehicle front fork damping device, comprising a head post (1), the lower end surface of the head post (1) is fixedly connected with a front fork shoulder (2), the lower side of the front fork shoulder (2) is provided with two connecting rods (3), characterized in that: Two connecting rods (3) and front fork shoulder (2) are provided with damping mechanism, the damping mechanism includes sleeve (4) fixedly connected to the upper end surface of connecting rod (3), the inside of sleeve (4) is full of hydraulic oil, the lower end surface of front fork shoulder (2) is fixedly connected with piston rod (5) slidingly connected with sleeve (4), the outer wall of sleeve (4) is fixedly connected with limiting ring (23), the upper end surface of limiting ring (23) is fixedly connected with spring (6) sleeved on the outer wall of sleeve (4), the lower end surface of piston rod (5) is fixedly connected with first piston (7) located in the inside of sleeve (4), the outer wall of first piston (7) is provided with a plurality of circumferentially distributed first through holes (10), the inner wall of piston rod (5) is rotatably connected with pivot (8), the lower end of pivot (8) extends below first piston (7) and is fixedly connected with second piston (9), the outer wall of second piston (9) is provided with a plurality of second through holes (11), the specifications of second through holes (11) are same with first through holes (10), and the number of second through holes (11) is one-to-one corresponding with first through holes (10).

2. The electric vehicle fork shock absorber of claim 1, wherein: The upper end of the outer wall of piston rod (5) is threadedly connected with threaded sleeve (21), and the upper end of spring (6) abuts against the lower end surface of threaded sleeve (21).

3. The electric vehicle fork shock absorber of claim 1, wherein: The upper end of pivot (8) extends above front fork shoulder (2) and is fixedly connected with rotating disc (14), the upper end surface of one of rotating disc (14) is rotatably connected with first rotating block (16) through connecting shaft, the upper end surface of front fork shoulder (2) is rotatably connected with second rotating block (17) through connecting shaft, the inner wall of second rotating block (17) is threadedly connected with threaded rod (18), and the rear end of threaded rod (18) is rotatably connected with first rotating block (16).

4. The electric vehicle fork suspension device of claim 3, wherein: The upper end surfaces of two rotating discs (14) are rotatably connected with connecting rod (15) through connecting shaft.

5. The electric vehicle fork shock absorber of claim 2, wherein: The upper end surfaces of two threaded sleeves (21) are fixedly connected with synchronous pulleys (22), and two synchronous pulleys (22) are drivingly connected through synchronous belt.

6. The electric vehicle fork suspension device of claim 1, wherein: The outer wall of first piston (7) is fixedly connected with two symmetrically distributed limiting blocks (12), and the inner wall of sleeve (4) is provided with two limiting grooves (13) slidingly connected with limiting blocks (12).

7. The electric vehicle fork suspension device of claim 3, wherein: The front end of threaded rod (18) is fixedly connected with first limiting plate (19), and the outer wall of threaded rod (18) is fixedly connected with second limiting plate (20) located behind second rotating block (17).

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