Front fork device and electric vehicle

Abstract

The utility model discloses a front fork device and an electric vehicle. The front fork device comprises a front fork body, a U-shaped reinforcing rib and a transfer connecting rod piece. The integrally-formed U-shaped front fork of the plate-shaped structure is adopted, an integral front fork body can be formed through a stamping or casting process, the process is simple, stress weak points of fork arms on the two sides can be eliminated in a plate-shaped mode, and particularly when an electric vehicle is frequently braked or encounters large pits on the road surface, the supporting performance of the plate-shaped structure is higher. Meanwhile, the U-shaped reinforcing ribs and the front fork body form a composite frame structure, the anti-roll performance is improved, and fatigue deformation lateral bending or roll is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle parts technology, and in particular to a front fork device and an electric vehicle including the front fork device. Background Technology

[0002] Existing electric vehicle front fork assemblies typically employ a rod-shaped welded structure, where multiple metal tubing components are welded together to form the main frame of the fork. While this structure provides a certain level of structural strength, stress concentration easily occurs on the two fork arms. Especially during frequent braking or encountering large potholes on the road, the rod-shaped fork arms bear alternating loads, making them prone to fatigue cracks, structural breakage, and even safety hazards. Furthermore, the traditional rod-shaped front fork manufacturing process is complex, requires high welding precision, and presents significant challenges in manufacturing costs and quality control. Utility Model Content

[0003] This application provides a front fork device and an electric vehicle, including a front fork body, a U-shaped reinforcing rib, and a connecting rod. The one-piece molded U-shaped plate structure front fork can be formed into a single fork body through stamping or casting processes. This simple process eliminates weak points in the side fork arms, especially when the electric vehicle brakes frequently or encounters large potholes, where the plate structure provides stronger support. Simultaneously, the U-shaped reinforcing rib and the front fork body form a composite frame structure, improving anti-roll performance and preventing fatigue-induced bending or tilting.

[0004] A front fork device according to an embodiment of this application includes:

[0005] The fork body adopts a one-piece molded U-shaped plate structure with the opening facing downwards to connect to the wheel's rotating axle;

[0006] The U-shaped reinforcing rib has an opening facing downwards, and its inner two sides are fixedly connected to the two sides of the front fork body, respectively.

[0007] A transfer connecting rod is fixedly installed on the top of the front fork body and is used for rotatable connection to the front end of the vehicle frame.

[0008] Furthermore, as a more preferred embodiment of this utility model, the top of the U-shaped reinforcing rib is provided with a bent portion, the bending direction being towards the front end of the vehicle frame, so that the top surface of the fork body is exposed.

[0009] Furthermore, as a more preferred embodiment of this utility model, the top of the front fork body is provided with a through mounting hole, one end of the transfer connecting rod is inserted into the mounting hole and fixedly connected to the mounting hole;

[0010] The top reinforcing rib of the U-shaped reinforcing rib is arranged around the mounting hole.

[0011] Furthermore, as a more preferred embodiment of this utility model, it also includes a mudguard component, which is detachably connected to the top of the fork body.

[0012] Furthermore, as a more preferred embodiment of this utility model, the mudguard component includes:

[0013] Curved baffle;

[0014] A fixed connection part is provided on the top of the arc-shaped baffle. The top of the fixed connection part is provided with a through hole, and one end of the transfer connecting rod can be positioned and inserted into the through hole.

[0015] Fasteners are used to fix the fixed connection part to the fork body.

[0016] Furthermore, as a more preferred embodiment of this utility model, a brake mounting plate is provided on one side of the front fork body, and the brake mounting plate is used to install the brake mechanism.

[0017] Furthermore, as a more preferred embodiment of this utility model, a cable routing hole is provided on the top of the front fork body, and the cable routing hole is used for the concealed installation of the headlight wiring.

[0018] Furthermore, as a more preferred embodiment of this utility model, the bottom sides of the front fork body are respectively provided with U-shaped slots for connecting the rotating shaft of the wheel.

[0019] Furthermore, as a more preferred embodiment of the present invention, a cover plate is provided on the top of the fork body, the cover plate extending toward the opening of the fork body, so that the cover plate can cover the position where the fixed connection part is connected to the fork body.

[0020] Based on the same inventive concept, this utility model also provides an electric vehicle, comprising:

[0021] The vehicle body bracket has a sleeve at the front end;

[0022] The aforementioned fork assembly includes a sleeve that can be fitted into the transfer connecting rod of the fork assembly.

[0023] The bottom of the T-handle is connected to the top of the transfer connecting rod, and the T-handle can drive the front fork assembly to rotate relative to the frame bracket. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0025] Figure 1This is a schematic diagram showing the unfolded three-dimensional structure of the front fork device in this embodiment.

[0026] Figure 2 This is a three-dimensional structural diagram showing the assembly of the front fork device with the front of the electric vehicle in this embodiment.

[0027] Figure 3 This is a three-dimensional structural diagram of the front fork assembly with the front of the electric vehicle in this embodiment.

[0028] Figure 4 This is a schematic diagram of the electric vehicle in this embodiment.

[0029] Figure label:

[0030] 100-Front fork assembly.

[0031] 1-Front fork body, 11-U-shaped plate structure, 12-U-shaped slot, 13-Mounting hole, 14-Brake mounting plate, 15-Cable routing hole, 16-Shielding plate.

[0032] 2-U-shaped reinforcing rib, 21-bending part.

[0033] 3-Transfer connecting rod.

[0034] 4-Mudguard component, 41-Arc-shaped baffle, 42-Fixed connection part, 421-Insertion hole, 43-Fastener.

[0035] 200 - Braking mechanism.

[0036] 300 - Electric vehicle, 301 - Frame bracket, 3011 - Sleeve, 302 - T-handlebar. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0041] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0042] Example

[0043] This embodiment aims to address the common problem of existing electric vehicle 300 front fork devices 100 employing a rod-shaped welded structure, where multiple metal tubing components are welded together to form the front fork body 1 frame. While this structure provides a certain level of support strength, stress concentration easily occurs on the two fork arms, especially during frequent braking or when encountering large potholes on the road. The rod-shaped fork arms bear alternating loads, making them prone to fatigue cracks, structural breakage, and even safety hazards. Furthermore, the traditional rod-shaped front fork manufacturing process is complex, requiring high welding precision, resulting in significant manufacturing costs and difficulties in quality control. (Refer to...) Figure 1-4 As shown, this application embodiment provides a front fork device 100 and an electric vehicle 300, including a front fork body 1, a U-shaped reinforcing rib 2, and a connecting rod 3. The front fork adopts an integrally molded U-shaped plate structure, which can be formed into an integral front fork body 1 through stamping or casting processes. The process is simple, and the plate structure can eliminate the weak points of stress on both sides of the fork arms. Especially when the electric vehicle 300 brakes frequently or encounters large potholes on the road surface, the support performance of the plate structure is stronger. At the same time, the U-shaped reinforcing rib and the front fork body 1 form a composite frame structure, improving anti-roll performance and avoiding fatigue deformation, bending, or tilting.

[0044] Reference Figure 1As shown, a front fork device 100 includes a front fork body 1, a U-shaped reinforcing rib 2, and a transfer connecting rod 3.

[0045] The fork body 1 is a one-piece molded U-shaped plate structure 11 with an opening facing downwards for connecting the wheel's rotating shaft. In some embodiments, U-shaped slots 12 for connecting the wheel's rotating shaft are respectively provided on the bottom of both sides of the fork body 1. Exemplarily, the fork body 11 is made of 2-5mm thick aluminum alloy plate or stainless steel, and is formed into a downward-facing U-shaped plate structure by a stamping die. The two side walls of the U-shaped plate structure extend downwards to form plate-shaped fork arms, and the ends of the fork arms are provided with U-shaped slots 12 for engaging the wheel's rotating shaft, such as the front axle of an electric vehicle 300. Compared with traditional rod-shaped fork arms, the two side walls of the U-shaped plate structure 11 are continuous plate structures without welding seams, which can evenly distribute the alternating load during braking or bumps to the entire plate body, avoiding local stress concentration.

[0046] The U-shaped reinforcing rib 2 has an opening facing downwards, and its inner two sides are fixedly connected to the two sides of the front fork body 1, respectively. For example, the U-shaped reinforcing rib 2 is formed by bending a rod-shaped structure into a U-shaped body, with its opening facing downwards, and its inner two sides are fixedly connected to the outer two side walls of the front fork body 1 by welding or riveting.

[0047] Reference Figure 1 As shown, in some embodiments, the top of the U-shaped reinforcing rib 2 is provided with a bent portion 21 facing the front end of the vehicle frame bracket 301, such as a bending angle of 45°-135°. After bending, the top surface of the fork body 1 is partially or completely exposed for the purpose of installing and fixing the connecting rod 3.

[0048] The transfer connecting rod 3 is fixedly installed on the top of the front fork body 1 and is used for rotatable connection to the front end of the frame bracket 301.

[0049] Reference Figure 1 As shown, in some embodiments, the top of the fork body 1 is provided with a through mounting hole 13, one end of the transfer connecting rod 3 is inserted into the mounting hole 13 and fixedly connected to the mounting hole 13. The top surface of the fork body 1 has a through mounting hole 13, the lower end of the transfer connecting rod 3 is inserted into the mounting hole 13 and fixed by welding, wherein the top reinforcing rib of the U-shaped reinforcing rib 2 is arranged around the mounting hole 13.

[0050] Reference Figure 1-3As shown, in some embodiments, a mudguard component 4 is also included, which is detachably connected to the top end inside the fork body 1. The mudguard component 4 includes an arc-shaped baffle 41, a fixing connection part 42, and a fastener 43. The fixing connection part 42 protrudes from the top of the arc-shaped baffle 41, and the top of the fixing connection part 42 has a through-hole 421, into which one end of the transfer connecting rod 3 can be positioned and inserted.

[0051] The fixed connection part 42 is fixed to the front fork body 1 by fasteners 43. The arc-shaped baffle 41 is formed by stamping, and the fixed connection part 42 at its top is provided with a socket 421. The socket 421 is sleeved on the outside of the transfer connecting rod 3 and fixed to the inner side wall of the front fork body 11 by bolts and fasteners 43. It should be noted that the detachable design facilitates cleaning of dirt or replacement, and the cooperation between the socket 421 and the transfer connecting rod 3 can assist in positioning.

[0052] Reference Figure 1 and 2 As shown, in some embodiments, a brake mounting plate 14 is provided on one side of the front fork body 1, and the brake mounting plate 14 is used to install the brake mechanism 200. For example, the brake mounting plate 14 is provided on the outer side of the right side wall of the front fork body 1, and a boss structure is formed by welding or stamping. An M6 threaded hole is opened on the boss for installing a disc brake caliper or drum brake mechanism.

[0053] Reference Figure 1 and 2 As shown, in some embodiments, a cable routing hole 15 is provided on the top of the front fork body 1, which is used for concealed installation of the headlight cable. For example, the cable routing hole 15 is located on the side of the top surface of the front fork body 1 near the frame bracket 301. The headlight cable passes through the hole into the internal cavity of the front fork body 1 and then connects to the power supply inside the frame body, avoiding external exposure and wear.

[0054] Reference Figure 2 As shown, in some embodiments, a shielding plate 16 is provided on the top of the fork body 1. The shielding plate 16 extends toward the opening of the fork body 1 so that it can cover the position where the fixed connection part 42 is connected to the fork body 1. For example, the shielding plate 16 covers the connection between the fixed connection part 42 of the mudguard 4 and the fork body 1. The shielding plate 16 is bent or welded to prevent mud and water from entering the bolt connection part.

[0055] Reference Figure 4 As shown, this embodiment also provides an electric vehicle 300, including:

[0056] The vehicle body bracket 301 has a sleeve 3011 at its front end;

[0057] The aforementioned front fork assembly 100, with sleeve 3011 capable of fitting into the transfer connecting rod 3 of the front fork assembly 100.

[0058] The bottom of the T-handle 302 is connected to the top of the transfer connecting rod 3, and the T-handle 302 can drive the front fork device 100 to rotate relative to the frame bracket 301.

[0059] The front end of the vehicle body bracket 301 is welded or bolted with a sleeve 3011. The inner diameter of the sleeve 3011 matches the outer diameter of the transfer connecting rod 3, ensuring that the sleeve 3011 can be tightly fitted onto the outside of the transfer connecting rod 3. A nylon bushing or ball bearing can be embedded inside the sleeve 3011 to reduce the frictional resistance when the transfer connecting rod 3 rotates.

[0060] After the transfer connecting rod 3 of the front fork device 100 is inserted into the sleeve 3011, its top end extends 50-80mm above the sleeve 3011, and the exposed part is machined with external threads for connection with the bottom of the T handlebar 302.

[0061] The electronic devices provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A front fork device characterized by comprising: include: The fork body adopts a one-piece molded U-shaped plate structure with the opening facing downwards for connecting the wheel's rotating axle; The U-shaped reinforcing rib has an opening facing downwards, and its inner two sides are fixedly connected to the two sides of the front fork body, respectively. A transfer connecting rod is fixedly installed on the top of the front fork body and is used for rotatable connection to the front end of the vehicle frame.

2. The fork arrangement of claim 1, wherein, The top of the U-shaped reinforcing rib is provided with a bend, and the bend direction is towards the front end of the vehicle frame so that the top surface of the fork body is exposed.

3. The fork arrangement of claim 1, wherein, The top of the fork body is provided with a through mounting hole, and one end of the transfer connecting rod is inserted into the mounting hole and fixedly connected to the mounting hole; The top reinforcing rib of the U-shaped reinforcing rib is arranged around the mounting hole.

4. The fork arrangement of claim 3, wherein, It also includes a mudguard component, which is detachably connected to the top of the fork body.

5. The fork arrangement of claim 4, wherein, The mudguard component includes: Curved baffle; A fixed connection part is provided on the top of the arc-shaped baffle. The top of the fixed connection part is provided with a through hole, and one end of the transfer connecting rod can be positioned and inserted into the through hole. Fasteners are used to fix the fixed connection part to the fork body.

6. The fork device of claim 1, wherein A brake mounting plate is provided on one side of the front fork body, and the brake mounting plate is used to install the brake mechanism.

7. The fork device of claim 1, wherein The top of the front fork body is provided with a cable routing hole, which is used for the concealed installation of the headlight wiring.

8. The fork device of claim 1, wherein, The bottom of both sides of the front fork body is provided with U-shaped slots for connecting the rotating shaft of the wheel.

9. The fork arrangement of claim 5, wherein, A cover plate is provided on the top of the fork body, and the cover plate extends toward the opening of the fork body so that the cover plate can cover the position where the fixed connection part is connected to the fork body.

10. An electric vehicle, characterized by include: The vehicle body bracket has a sleeve at the front end; The fork assembly as described in any one of claims 1-9, wherein the sleeve is capable of being fitted into the transfer connecting rod of the fork assembly; The bottom of the T-handle is connected to the top of the transfer connecting rod, and the T-handle can drive the front fork assembly to rotate relative to the frame bracket.

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