Firm front fork damping structure of electric vehicle

Abstract

The utility model relates to the technical field of electric vehicle front forks, in particular to a firm front fork damping structure of an electric vehicle, which comprises a vehicle head vertical rod, an upper fork shoulder and a lower fork shoulder, a damping mechanism is arranged between the upper fork shoulder and the lower fork shoulder, and the damping mechanism comprises two mounting plates vertically arranged between the upper fork shoulder and the lower fork shoulder. Two symmetrically-distributed connecting rods are hinged to the opposite outer walls of the two mounting plates through hinged supports correspondingly, the other ends of the two connecting rods located on the upper side are hinged to the upper fork shoulder through hinged supports correspondingly, and the other ends of the two connecting rods located on the lower side are hinged to the lower fork shoulder through hinged supports correspondingly; first sleeves are fixedly connected to the opposite outer walls of the two mounting plates and the opposite outer walls of the upper fork shoulder and the lower fork shoulder correspondingly, more uniform impact force dispersion and gradual buffering are achieved through cooperation of a cross linkage four-way hydraulic damping mechanism and a variable-pitch spring, the damping effect and the system stability are remarkably improved, and the service life of the system is prolonged. And meanwhile, the long-term reliable use performance is ensured by optimizing the structural design.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motor car front fork technical field, specifically disclose the firm type front fork damping structure of electric motor car. BACKGROUND

[0002] Electric motor car front fork refers to the part of electric motor car front suspension system, it bears the important function of supporting the front part weight and damping of vehicle. Electric motor car front fork is usually composed of two independent suspension supports, supports the front wheel and the vehicle body, when the road surface is uneven, the vehicle body vibration increases obviously, causes certain vibration and impact to human body, makes human body feel uncomfortable, leads to driving instability, influences personal safety.

[0003] In prior art, in order to reduce the bump feeling in the process of electric motor car driving, spring is generally arranged in front fork component as damping component, when the compression amount of spring for damping is too large, it will generate larger reverse elastic force, will influence the stability of electric motor car driving, influences the damping effect of electric motor car whole, therefore, the firm type front fork damping structure of electric motor car is needed to solve this problem. UTILITY MODEL CONTENTS

[0004] The utility model discloses firm type front fork damping structure of electric motor car, through the cooperation of cross frame linkage four -way hydraulic damping mechanism and variable pitch spring, more even impact force dispersion and gradual buffering are realized, the damping effect and system stability are improved significantly, and the long -term reliable use performance is ensured to the optimization structure design simultaneously.

[0005] The utility model discloses firm type front fork damping structure of electric motor car, including the head post, upper fork shoulder and lower fork shoulder, be provided with damping mechanism between upper fork shoulder and lower fork shoulder, the damping mechanism includes two mounting plates perpendicularly arranged between upper fork shoulder and lower fork shoulder, two the opposite outer wall of mounting plate is all hinged with two symmetrical distribution's connecting rods through the hinge seat, the other end of two connecting rods located upside is hinged with upper fork shoulder through the hinge seat respectively, the other end of two connecting rods located downside is hinged with lower fork shoulder through the hinge seat respectively, the opposite outer wall of two mounting plates and the opposite outer wall of upper fork shoulder and lower fork shoulder are fixedly connected with first sleeve, the inner wall of four first sleeve is slidably connected with cross frame, the four ends of cross frame are all fixedly connected with piston, the outer wall of four pistons is all penetrated and is set up with a plurality of through -holes, and the inside of four first sleeve is full of hydraulic oil.

[0006] As firm type front fork damping structure of electric motor car of the utility model is preferred, the upper end surface of lower fork shoulder is fixedly connected with two symmetrical distribution's second sleeve, the lower end surface of upper fork shoulder is fixedly connected with two limit rods of sliding connection with second sleeve, be provided with two spring of setting in the second sleeve outside between upper fork shoulder and lower fork shoulder.

[0007] The lower end surface of the lower fork shoulder is fixedly connected with two symmetrically distributed connecting rods, and the lower end of the outer wall of each of the two connecting rods is provided with a wheel mounting hole.

[0008] The inner wall of the first sleeve is provided with a sealing ring between the cross and the cross.

[0009] The length of the two first sleeves in the horizontal direction is greater than the length of the two first sleeves in the vertical direction.

[0010] The spring is a variable pitch coil spring, and the pitch near the upper fork shoulder end is smaller than the pitch near the lower fork shoulder end.

[0011] The beneficial effects of the present application are:

[0012] 1. The cross linkage four-way hydraulic damping mechanism is adopted, the piston in the four first sleeves moves synchronously to generate multidirectional damping force, the impact force can be evenly dispersed in all directions when the vehicle encounters bumps, the traditional one-way damping structure has better buffering effect and stability, and the present application is especially suitable for the riding demand of the electric vehicle in complex road conditions.

[0013] 2. The variable pitch spring and the limiting rod are cooperated, the progressive elastic buffering is realized, the movement track of the damping mechanism is stable and reliable, the length of the horizontal direction sleeve is optimized and designed, and the sealing ring is provided to effectively prevent the movement interference and hydraulic oil leakage, so that the whole damping system has longer service life and more stable working performance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0015] Fig. 1 It is the overall structure diagram of the firm front fork damping structure of the electric vehicle of the present application.

[0016] Fig. 2 It is the front view of the firm front fork damping structure of the electric vehicle of the present application.

[0017] Fig. 3 It is the structure diagram of the cross of the present application.

[0018] 1, head tube; 2, upper fork shoulder; 3, lower fork shoulder; 4, connecting rod; 5, mounting plate; 6, connecting rod; 7, first sleeve; 8, cross; 9, piston; 10, through hole; 11, limiting rod; 12, second sleeve; 13, spring; 14, wheel mounting hole. DETAILED DESCRIPTION

[0019] The utility model will be further explained in connection with the drawings and specific embodiments to help understand the contents of the utility model. The method used in the utility model is conventional method if no special provision; the raw materials and devices used are conventional market products if no special provision.

[0020] Please refer to Figs. 1-3 , the firm type front fork damping structure of electric vehicle, including head tube 1, upper fork shoulder 2 and lower fork shoulder 3, be provided with damping mechanism between upper fork shoulder 2 and lower fork shoulder 3, and the damping mechanism includes two mounting plates 5 vertically arranged between upper fork shoulder 2 and lower fork shoulder 3, two mounting plates 5 relative outer wall are all hinged with two symmetrical distribution connecting rods 6 through hinge seat, the other end of the two connecting rods 6 located on the upside is hinged with upper fork shoulder 2 through hinge seat respectively, the other end of the two connecting rods 6 located on the downside is hinged with lower fork shoulder 3 through hinge seat respectively, the relative outer wall of two mounting plates 5 and the relative outer wall of upper fork shoulder 2 and lower fork shoulder 3 are all fixedly connected with first sleeve 7, the inner wall of four first sleeves 7 is slidably connected with cross 8, the four ends of cross 8 are all fixedly connected with piston 9, a plurality of through holes 10 are formed in the outer wall of four pistons 9, and the interiors of four first sleeves 7 are filled with hydraulic oil.

[0021] In the embodiment: when the wheel vibrates, upper fork shoulder 2 and lower fork shoulder 3 approach or move away from each other, when upper fork shoulder 2 approaches lower fork shoulder 3, two first sleeves 7 in vertical direction approach each other, and two first sleeves 7 in horizontal direction move away from each other, when upper fork shoulder 2 moves away from lower fork shoulder 3, two first sleeves 7 in vertical direction move away from each other, and two first sleeves 7 in horizontal direction approach each other, further making the pistons 9 on the four ends of the outer wall of cross 8 slide in the first sleeves 7, generating damping through the hydraulic oil passing through the through holes 10 into the other side of the pistons 9, thereby reducing vibration, and the utility model generates damping effect through four first sleeves 7 and pistons 9, and the damping effect is good.

[0022] As a technical optimization scheme of the utility model, the upper end surface of lower fork shoulder 3 is fixedly connected with two symmetrical distribution second sleeves 12, the lower end surface of upper fork shoulder 2 is fixedly connected with two limiting rods 11 slidably connected with the second sleeves 12, and two springs 13 are arranged between upper fork shoulder 2 and lower fork shoulder 3 and sleeved on the outside of the second sleeves 12.

[0023] In the embodiment, the limiting rod 11 is slid in the inner wall of the second sleeve 12, the upper fork shoulder 2 and the lower fork shoulder 3 are limited, the upper fork shoulder 2 and the lower fork shoulder 3 are stable in movement, the spring 13 is used for resetting the upper fork shoulder 2 and the lower fork shoulder 3, and further shock buffering is facilitated.

[0024] As a technical optimization scheme of the utility model, the lower end surface of the lower fork shoulder 3 is fixedly connected with two symmetrically distributed connecting rods 4, wheel mounting holes 14 are formed through the lower ends of the outer walls of the two connecting rods 4.

[0025] In the embodiment, the two symmetrically distributed connecting rods 4 are fixedly connected to the lower end surface of the lower fork shoulder 3, and the wheel mounting holes 14 are formed through the lower ends of the outer walls of the two connecting rods 4, so that the wheels are facilitated to be installed.

[0026] As a technical optimization scheme of the utility model, the inner wall of the first sleeve 7 and the cross 8 are provided with a sealing ring.

[0027] In the embodiment, the sealing ring is arranged between the inner wall of the first sleeve 7 and the cross 8, so as to prevent oil leakage.

[0028] As a technical optimization scheme of the utility model, the length of the two first sleeves 7 in the horizontal direction is greater than the length of the two first sleeves 7 in the vertical direction.

[0029] In the embodiment, the length of the two first sleeves 7 in the horizontal direction is greater than the length of the two first sleeves 7 in the vertical direction, so as to prevent the first sleeves 7 in the left and right directions and the piston 9 from being clamped when the upper fork shoulder 2 and the lower fork shoulder 3 are close to each other.

[0030] As a technical optimization scheme of the utility model, the spring 13 is a variable pitch spiral spring, the pitch close to the upper fork shoulder 2 end is smaller than the pitch close to the lower fork shoulder 3 end.

[0031] In the embodiment, the variable pitch spring design can provide a nonlinear elastic force, and cooperate with the hydraulic shock to achieve a smoother buffering effect.

[0032] The working principle and use process of the utility model: when the wheel vibrates, the upper fork shoulder 2 and the lower fork shoulder 3 are close to or far away from each other, when the upper fork shoulder 2 is close to the lower fork shoulder 3, the two first sleeves 7 in the vertical direction are close to each other, and the two first sleeves 7 in the horizontal direction are far away from each other, when the upper fork shoulder 2 is far away from the lower fork shoulder 3, the two first sleeves 7 in the vertical direction are far away from each other, and the two first sleeves 7 in the horizontal direction are close to each other, further make the piston 9 at the four ends of the outer wall of the cross 8 slide in the first sleeve 7, pass through the through hole 10 to enter the other side of the piston 9 to generate damping through hydraulic oil, thereby reducing vibration, and the spring 13 is convenient for the upper fork shoulder 2 and the lower fork shoulder 3 reset, and is convenient for further buffering vibration, the utility model generates damping effect through four first sleeves 7 and pistons 9, and the damping effect is good.

[0033] 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" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation of the utility model.

[0034] 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 in the scope of the utility model patent protection should still belong to the scope covered by the claims of the utility model.

Claims

1. A firm front fork damping structure of an electric vehicle, comprising a head tube (1), an upper fork shoulder (2) and a lower fork shoulder (3), characterized in that: The shock-absorbing mechanism is arranged between the upper fork shoulder (2) and the lower fork shoulder (3), and comprises two mounting plates (5) arranged vertically between the upper fork shoulder (2) and the lower fork shoulder (3), the opposite outer walls of the two mounting plates (5) are hingedly connected with two symmetrically distributed connecting rods (6) through hinges, the other ends of the two connecting rods (6) on the upper side are respectively hingedly connected with the upper fork shoulder (2) through hinges, the other ends of the two connecting rods (6) on the lower side are respectively hingedly connected with the lower fork shoulder (3) through hinges, the opposite outer walls of the two mounting plates (5) and the opposite outer walls of the upper fork shoulder (2) and the lower fork shoulder (3) are fixedly connected with first sleeves (7), the inner walls of the four first sleeves (7) are slidably connected with a cross (8), the four ends of the cross (8) are fixedly connected with pistons (9), a plurality of through holes (10) are formed in the outer walls of the four pistons (9), and the interiors of the four first sleeves (7) are filled with hydraulic oil.

2. The firm front fork damping structure of an electric vehicle according to claim 1, characterized by: The upper end surface of the lower fork shoulder (3) is fixedly connected with two symmetrically distributed second sleeves (12), the lower end surface of the upper fork shoulder (2) is fixedly connected with two limiting rods (11) which are slidably connected with the second sleeves (12), and the upper fork shoulder (2) and the lower fork shoulder (3) are provided with two springs (13) which are sleeved outside the second sleeves (12).

3. The firm front fork damping structure of an electric vehicle according to claim 1, characterized by: The lower end surface of the lower fork shoulder (3) is fixedly connected with two symmetrically distributed connecting rods (4), and wheel mounting holes (14) are formed in the lower ends of the outer walls of the two connecting rods (4).

4. The firm front fork damping structure of an electric vehicle according to claim 1, characterized by: Sealing rings are arranged between the inner walls of the first sleeves (7) and the cross (8).

5. The firm front fork damping structure of an electric vehicle according to claim 1, characterized by: The lengths of the two first sleeves (7) in the horizontal direction are greater than the lengths of the two first sleeves (7) in the vertical direction.

6. The firm front fork damping structure of an electric vehicle according to claim 2, characterized by: The spring (13) is a variable-pitch spiral spring, and the pitch of the end close to the upper fork shoulder (2) is smaller than the pitch of the end close to the lower fork shoulder (3).

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