Front fork connecting device of electric vehicle

Abstract

The utility model relates to the technical field of front fork connection, and discloses an electric vehicle front fork connecting device which comprises a left front fork leg, a right front fork leg, an axle screw and a wheel and is characterized in that the left front fork leg and the right front fork leg clamp the wheel, and connecting holes allowing the axle screw to penetrate through are formed in the ends of the left front fork leg and the right front fork leg; the axle screw penetrates through a hub of the wheel and the connecting hole, the axle screw is in threaded connection with a connecting nut, and a bolt head of the axle screw and the connecting nut cooperatively clamp the left front fork leg and the right front fork leg; an adjusting cylinder is arranged at the connecting hole, the axle screw is sleeved with the adjusting cylinder, the adjusting cylinder is in sliding fit with the axle screw, one end of the adjusting cylinder makes contact with a hub of the wheel, and the other end of the adjusting cylinder can make contact with a bolt head or a connecting nut of the axle screw. The connecting structure has the effect of reducing the possibility of deformation of the left and right legs of the front fork in the connecting process.

Description

Technical Field

[0001] The present application relates to the technical field of front fork connections, and in particular to a front fork connection device for an electric vehicle. Background Art

[0002] The front fork of an electric vehicle is a core component, located at the front of the vehicle. It shoulders multiple tasks, including supporting the vehicle, transmitting steering signals, and absorbing road vibrations. The fork primarily consists of a fork stem and left and right fork legs. The fork stem is attached to the stem, which is connected to the handlebars, while the fork legs connect to the axle bolts. To enhance ride comfort, the fork legs are often equipped with shock absorbers.

[0003] The left and right fork legs have connecting holes for the axle screws, which are threaded with connecting nuts. To connect the fork legs to the axle screws, insert the axle screws through the holes and clamp the fork legs together using the connecting nuts. The front wheel is positioned between the fork legs, and the axle screws extend through the front wheel hub.

[0004] To facilitate installation of the front wheel between the left and right fork legs, the width of the front wheel is typically smaller than the distance between the fork legs. However, when the fork legs are clamped together using the connecting nut, excessive rotation can cause the fork legs to move closer together, resulting in deformation. This deformation can affect the shock absorption performance of the fork legs, and in turn, affect rider comfort. Utility Model Content

[0005] In order to reduce the possibility of deformation of the left and right legs of the front fork during the connection process, the present application provides an electric vehicle front fork connection device.

[0006] The present application provides an electric vehicle front fork connection device that adopts the following technical solution:

[0007] An electric vehicle front fork connection device comprises left and right front fork legs, an axle screw and a wheel, wherein the left and right front fork legs clamp the wheel, and the ends of the left and right front fork legs are provided with connection holes for the axle screw to pass through;

[0008] The axle screw passes through the hub of the wheel and the connecting hole, and a connecting nut is threadedly connected to the axle screw, and the bolt head of the axle screw and the connecting nut cooperate to clamp the left and right front fork legs;

[0009] An adjusting cylinder is provided at the connecting hole, which is sleeved on the axle screw and slidingly fitted with the axle screw. One end of the adjusting cylinder contacts the hub of the wheel, and the other end of the adjusting cylinder can contact the bolt head or connecting nut of the axle screw.

[0010] Optionally, a push ring is provided at one end of the adjusting cylinder away from the wheel.

[0011] Optionally, the ends of the left and right front fork legs are provided with locking holes communicating with the connecting hole;

[0012] A locking bolt is provided at the locking hole, and an end of the locking bolt contacts the outer peripheral surface of the adjusting cylinder.

[0013] Optionally, a locking plane is provided on the outer peripheral surface of the left and right front fork legs near the position of the locking bolt.

[0014] Optionally, a limiting groove is provided on a side of the outer circumference of the adjusting cylinder close to the locking hole along the length direction of the adjusting cylinder;

[0015] One end of the locking bolt is located inside the limiting groove and is slidably engaged with the limiting groove.

[0016] Optionally, a plurality of annular oil guide grooves are provided on the outer circumference of the adjusting cylinder along the length direction of the adjusting cylinder, and the oil guide grooves are connected to the limiting grooves;

[0017] An oil filling groove communicating with a plurality of oil guide grooves is provided on the outer circumference of the adjusting cylinder along the length direction of the adjusting cylinder;

[0018] The oil filling groove passes through the push ring, and a sealing plug is provided at a position of the push ring close to the oil filling groove.

[0019] Optionally, a plurality of protrusions are provided on a side of the push ring away from the wheel;

[0020] The maximum distance between the sealing plug and the push ring is smaller than the maximum distance between the protrusion and the push ring.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The adjustment cylinder, which slides onto the axle screw, enables quick wheel installation and securement. One end of the cylinder contacts the wheel hub, while the other end contacts the bolt head. It works with the fork legs to clamp the wheel and secure it with the connecting nut and bolt head. The push ring design facilitates movement of the adjustment cylinder, while the locking bolt and locking surface ensure stability within the connection hole, reducing the risk of deformation and improving installation efficiency and connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2This is a schematic diagram of the left and right front fork leg structures in Example 1 of the present application.

[0025] Figure 3 It is a schematic diagram showing the relative positions of the adjustment cylinder and the push ring in Example 1 of the present application.

[0026] Figure 4 This is a schematic diagram showing the positional relationship between the limit groove and the oil guide groove in Example 2 of the present application.

[0027] Figure 5 This is a schematic diagram showing the positional relationship between the oil guide groove and the oil filling groove in Example 2 of the present application.

[0028] Description of reference numerals:

[0029] 1. Left and right front fork legs; 11. Connecting hole; 12. Locking hole; 121. Locking bolt; 13. Locking plane; 2. Axle screw; 21. Connecting nut; 3. Adjusting cylinder; 31. Limiting groove; 32. Oil guide groove; 33. Oil filling groove; 331. Sealing plug; 4. Push ring; 41. Protrusion. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0031] The embodiment of the present application discloses a front fork connecting device for an electric vehicle.

[0032] Example 1

[0033] A front fork connection device for an electric vehicle comprises left and right front fork legs 1, an axle screw 2, and a wheel. The left and right front fork legs 1 are designed to clamp the wheel, and connection holes 11 are provided at the ends of the left and right front fork legs 1 for the axle screw 2 to pass through. The axle screw 2 passes through the wheel hub and the connection holes 11 of the left and right front fork legs 1. A connecting nut 21 is threadedly connected to the axle screw 2. The bolt head of the axle screw 2 and the connecting nut 21 work together to clamp the left and right front fork legs 1, thereby securing the wheel in place.

[0034] In an embodiment of the present application, the adjustment tube 3 is sleeved on the axle screw 2 and slides with the axle screw 2. One end of the adjustment tube 3 contacts the hub of the wheel, while the other end can contact the bolt head of the axle screw 2 or the connecting nut 21. In an embodiment of the present application, the end of the adjustment tube 3 away from the wheel contacts the bolt head of the axle screw 2. This helps when fixing the axle screw 2 and the left and right front fork legs 1. By sliding the adjustment tube 3 and the axle screw 2, one end of the adjustment tube 3 contacts the hub of the wheel, and the bolt head of the axle screw 2 contacts the end of the adjustment tube 3. The end of the adjustment tube 3 cooperates with one of the left and right front fork legs 1 to clamp the wheel, and then the connecting nut 21 and the bolt head of the axle screw 2 cooperate to clamp and fix the wheel, completing the installation of the wheel. This design also reduces the possibility of deformation of the left and right front fork legs 1 during installation.

[0035] To facilitate the movement of the adjustment cylinder 3 by the bolt head of the axle screw 2, a push ring 4 is provided at the end of the adjustment cylinder 3 away from the wheel. The push ring 4 is coaxial with and integrally formed with the adjustment cylinder 3. The large contact surface between the push ring 4 and the bolt head of the axle screw 2 helps to improve the convenience of operation.

[0036] To reduce the possibility of the adjustment cylinder 3 rotating relative to the connecting hole 11, the ends of the left and right front fork legs 1 are provided with locking holes 12 that communicate with the connecting hole 11. A locking bolt 121 is provided in the locking hole 12. The end of the locking bolt 121 contacts the outer circumference of the adjustment cylinder 3, tightening the adjustment cylinder 3 against the connecting hole 11 via the locking bolt 121, thereby ensuring the stability of the adjustment cylinder 3.

[0037] In addition, in order to facilitate tightening the end of the locking bolt 121 against the inside of the adjustment tube 3, a locking plane 13 is provided on the outer peripheral surface of the left and right front fork legs 1 near the locking bolt 121, and the bolt head of the locking bolt 121 is in contact with the locking plane 13, which helps to improve the convenience and accuracy of the locking operation.

[0038] The embodiment of the present application discloses an electric vehicle front fork connection device that implements the following principles: The adjustment cylinder 3, which slides onto the axle screw 2, enables rapid installation and fixation of the wheel. One end of the adjustment cylinder 3 contacts the wheel hub, and the other end contacts the bolt head, cooperating with the front fork legs to clamp the wheel and secure it via the connecting nut 21 and the bolt head. The design of the push ring 4 increases the ease of movement of the adjustment cylinder 3, while the provision of the locking bolt 121 and the locking plane 13 ensures the stability of the adjustment cylinder 3 within the connection hole 11, reducing the risk of deformation and improving installation efficiency and connection reliability.

[0039] Example 2

[0040] This embodiment differs from Embodiment 1 in that a retaining groove 31 is provided along the length of the adjusting cylinder 3 on the side of the outer circumference of the adjusting cylinder 3 near the locking hole 12. This design allows one end of the locking bolt 121 to be positioned within the retaining groove 31 and to slide therewith. The retaining groove 31, which is located within the inner wall of the retaining groove 31, effectively reduces the possibility of the adjusting cylinder 3 rotating, thereby improving the operating stability of the adjusting cylinder 3.

[0041] The outer circumference of the adjusting cylinder 3 is also provided with a number of annular oil guide grooves 32. These oil guide grooves 32 are connected to the limiting grooves 31, so that oil filling grooves 33 are formed along the length of the outer circumference of the adjusting cylinder 3 and connected to the oil guide grooves 32. The design of the oil filling grooves 33 allows grease to flow from the oil filling grooves 33 into the oil guide grooves 32, and then guide the grease into the limiting grooves 31 through the oil guide grooves 32. This process not only reduces the amount of impurities between the connecting hole 11 and the adjusting cylinder 3, but also lubricates the adjusting cylinder 3 and the interior of the connecting hole 11, reducing the resistance to the movement of the adjusting cylinder 3 and improving the ease of withdrawing the adjusting cylinder 3 from the connecting hole 11.

[0042] In order to further reduce the possibility of dust and impurities entering the oil filling groove 33, when oil filling is not required, it is sealed by a sealing plug 331. This measure effectively protects the oil filling groove 33 and prevents the intrusion of dust and impurities.

[0043] A plurality of protrusions 41 are provided on the side of the push ring 4 away from the wheel, and a space for placing the sealing plug 331 is formed between these protrusions 41 and the push ring 4, thereby reducing the influence of the bolt head of the axle screw 2 on the sealing plug 331, enhancing the sealing effect, and ensuring the cleanliness and lubrication of the adjustment cylinder 3.

[0044] The working principle of Example 2 is as follows: the adjusting cylinder 3 is stably positioned by slidingly engaging the locking bolt 121 with the retaining groove 31 on its outer circumference. It is also equipped with an oil guide groove 32 and an oil filling groove 33 for injecting grease. The grease flow cleans and lubricates the adjusting cylinder 3 and the connecting hole 11, reducing impurities and friction and facilitating easy removal of the adjusting cylinder 3. The use of a sealing plug 331 prevents dust from entering, while the design of the protrusion 41 reduces the impact of the bolt head on the sealing plug 331. Together, these ensure the stability of the adjusting cylinder 3 and facilitate its maintenance.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An electric vehicle front fork connection device, comprising left and right front fork legs, an axle screw, and a wheel, characterized in that: The left and right front fork legs clamp the wheel, and the ends of the left and right front fork legs are provided with connecting holes for the axle screw to pass through; The axle screw passes through the hub of the wheel and the connecting hole, and a connecting nut is threadedly connected to the axle screw, and the bolt head of the axle screw and the connecting nut cooperate to clamp the left and right front fork legs; An adjusting cylinder is provided at the connecting hole, which is sleeved on the axle screw and slidingly fitted with the axle screw. One end of the adjusting cylinder contacts the hub of the wheel, and the other end of the adjusting cylinder can contact the bolt head or connecting nut of the axle screw.

2. The electric vehicle front fork connection device according to claim 1, characterized in that: A pushing ring is provided at one end of the adjusting cylinder away from the wheel.

3. The front fork connecting device of an electric vehicle according to claim 2, characterized in that: The ends of the left and right front fork legs are provided with locking holes communicating with the connecting hole; A locking bolt is provided at the locking hole, and an end of the locking bolt contacts the outer peripheral surface of the adjusting cylinder.

4. The front fork connecting device of an electric vehicle according to claim 3, characterized in that: The outer peripheral surfaces of the left and right front fork legs are provided with locking planes near the locking bolts.

5. The front fork connecting device of an electric vehicle according to claim 3, characterized in that: A limiting groove is provided on one side of the outer circumference of the adjusting cylinder close to the locking hole along the length direction of the adjusting cylinder; One end of the locking bolt is located inside the limiting groove and is slidably engaged with the limiting groove.

6. The front fork connecting device of an electric vehicle according to claim 5, characterized in that: A plurality of annular oil guide grooves are provided on the outer circumference of the adjusting cylinder along the length direction of the adjusting cylinder, and the oil guide grooves are connected to the limiting grooves; An oil filling groove communicating with a plurality of oil guide grooves is provided on the outer circumference of the adjusting cylinder along the length direction of the adjusting cylinder; The oil filling groove passes through the push ring, and a sealing plug is provided at a position of the push ring close to the oil filling groove.

7. The front fork connecting device of an electric vehicle according to claim 6, characterized in that: The push ring is provided with a plurality of protrusions on a side away from the wheel; The maximum distance between the sealing plug and the push ring is smaller than the maximum distance between the protrusion and the push ring.

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