Rear fork assembly of electric vehicle
Through the electric vehicle rear flat fork assembly designed with magnesium alloy material and split structure, the problems of poor flexibility and heavy weight of the existing electric vehicle rear flat fork integral structure are solved, and higher shock absorption performance and driving comfort are achieved, while extending the service life.
Patent Information
- Application Number
- CN202421788917.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The rear flat forks of existing electric vehicles usually adopt an integrated integral structure, which has poor flexibility and heavy weight. The material is cast iron, resulting in short battery life, poor shock absorption and driving comfort, which are prone to rust and easily break.
The left rear fork body and right rear fork body are symmetrically arranged, both of which are made of high-pressure die-cast by magnesium alloy material, and an integral structure is formed by connecting components, connected between the frame and the axle, adding a split design to improve assembly and wiring flexibility, and using magnesium alloy material to reduce the rear suspension weight of the whole vehicle.
It improves the shock absorption performance of electric vehicles, improves driving comfort, extends service life, and effectively avoids safety hazards such as rust and breakage.
Smart Images
Figure CN223187611U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric vehicle accessory structures, in particular to a rear flat fork assembly of an electric vehicle. Background Art
[0002] With the development and popularization of transportation, low-carbon, low-energy transportation has become an increasingly popular choice. In response to this trend, electric two-wheeled vehicles have rapidly developed and are playing an increasingly important role in people's daily lives. Their prospects are widely optimistic, as they not only enrich people's travel options but also bring fun and convenience to riders. The suspension system is one of the most important systems in an electric vehicle, determining, to a certain extent, the vehicle's handling, comfort, and safety. The rear fork, as one of the most critical structural components in an electric vehicle's rear suspension system, is crucial to the performance of the electric two-wheeled vehicle.
[0003] However, the rear forks used in existing electric vehicles usually adopt an integrated structure, which has poor flexibility. They are generally made of cast iron, which is heavy, resulting in a short battery life, poor shock absorption performance and driving comfort. After long-term use, the rear forks are prone to breakage due to vibration or oxidation corrosion and rust. Utility Model Content
[0004] The purpose of the utility model is to provide a rear flat fork assembly of an electric vehicle, which reduces the rear suspension mass of the entire electric vehicle and further improves the shock absorption performance.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a rear fork assembly of an electric vehicle, comprising:
[0007] A left rear fork body and a right rear fork body, wherein the left rear fork body and the right rear fork body are symmetrically arranged and are both formed by high-pressure die-casting of a magnesium alloy material;
[0008] A connecting assembly, wherein the left rear flat fork body and the right rear flat fork body are connected by the connecting assembly to form an integral structure, the electric vehicle includes a frame and an axle, and the integral structure is connected between the frame and the axle.
[0009] As a preferred technical solution for the rear flat fork assembly of the above-mentioned electric vehicle, the rear flat fork assembly of the electric vehicle also includes a fastener, the front end of the left rear flat fork body is provided with a first mounting hole, the front end of the right rear flat fork body is provided with a second mounting hole, the fastener passes through the first mounting hole and the second mounting hole at the same time, and is connected to the frame.
[0010] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, a first slot is provided inside the left rear swingarm body, a second slot is provided inside the right rear swingarm body, the electric vehicle further includes a first connecting member, a second connecting member, a left shock absorber and a right shock absorber, the first connecting member passes through the first slot and is connected to the left shock absorber, and the second connecting member passes through the second slot and is connected to the right shock absorber.
[0011] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, the rear swingarm assembly of the electric vehicle further includes a first galvanized pipe and a second galvanized pipe, the first galvanized pipe is disposed inside the first slot, the first connecting member passes through the first galvanized pipe and is connected to the left shock absorber, the second galvanized pipe is disposed inside the second slot, and the second connecting member passes through the second galvanized pipe and is connected to the right shock absorber.
[0012] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, the electric vehicle further includes a rear mudguard, a left lug is protruded from the top of the left rear swingarm body, a right lug is protruded from the top of the right rear swingarm body, and the rear mudguard is connected between the left lug and the right lug.
[0013] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, the electric vehicle further includes a motor, a wire clip is provided inside the right rear swingarm body or inside the left rear swingarm body, and the wire clip is used to fix the wire of the motor.
[0014] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, a first limiting hole is provided on the inner side surface of the left rear swingarm body, a second limiting hole is provided on the inner side surface of the right rear swingarm body, the rear swingarm assembly of the electric vehicle further includes a positioning member, and the positioning member is in interference fit with the first limiting hole and the second limiting hole at the same time, so that the left rear swingarm body and the right rear swingarm body are spliced to form a surrounding circle.
[0015] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, a plurality of reinforcing ribs are provided on the inner sides of both the left rear swingarm body and the right rear swingarm body.
[0016] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, threaded holes and rear axle slots are provided at the tails of both the left rear swingarm body and the right rear swingarm body.
[0017] As a preferred technical solution of the rear swingarm assembly of the electric vehicle described above, a limiting convex column is further provided on the left rear swingarm body or the right rear swingarm body.
[0018] The beneficial effects of the present utility model are:
[0019] The utility model provides a rear swing arm assembly of an electric vehicle. The rear swing arm assembly of the electric vehicle includes: a left rear swing arm main body, a right rear swing arm main body and a connecting component. The left rear swing arm main body and the right rear swing arm main body are symmetrically arranged, and both the left rear swing arm main body and the right rear swing arm main body are formed by high-pressure die casting of magnesium alloy material. The left rear swing arm main body and the right rear swing arm main body are connected by the connecting component to form an integral structure. The electric vehicle includes a frame and an axle, and the integral structure is connected between the frame and the axle. With such a setting, the split structure of the left rear swing arm main body and the right rear swing arm main body is adopted, which improves the flexibility of assembly and subsequent wiring. And it is made of magnesium alloy material, which greatly reduces the weight of the rear suspension of the whole electric vehicle, improves the shock absorption performance, enhances the driving comfort, and effectively avoids safety hazards such as rust and fracture to a certain extent, and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is an exploded view of the rear swing arm assembly of the electric vehicle provided by the utility model;
[0021] Figure 2 is an assembly schematic diagram of the rear swing arm assembly of the electric vehicle provided by the utility model;
[0022] Figure 3 is a structural schematic diagram of the left rear swing arm main body provided by the utility model.
[0023] Wherein:
[0024] 1. Left rear swing arm main body; 2. Right rear swing arm main body; 3. First mounting hole; 4. Second mounting hole; 5. First slot hole; 6. Second slot hole; 7. Left lug; 8. Right lug; 9. First limiting hole; 10. Reinforcing rib; 11. Threaded hole; 12. Rear axle slot; 13. Limiting convex column; 14. Buffer sleeve; 15. Rubber ring; 16. Guide tube; 17. First wire trough hole; 18. Second wire trough hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The embodiments of the utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and should not be construed as a limitation to the utility model.
[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0027] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the connection inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] Unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.
[0029] The technical solution of the present utility model will be further described below with reference to the drawings and through specific embodiments.
[0030] Such as Figures 1 to 3As shown in the figure, this embodiment provides a rear swingarm assembly for an electric vehicle. The rear swingarm assembly of the electric vehicle includes: a left rear swingarm main body 1, a right rear swingarm main body 2, and a connecting component. The left rear swingarm main body 1 and the right rear swingarm main body 2 are symmetrically arranged, and both the left rear swingarm main body 1 and the right rear swingarm main body 2 are formed by high-pressure die casting of magnesium alloy material. The left rear swingarm main body 1 and the right rear swingarm main body 2 are connected by the connecting component to form an integral structure. The electric vehicle includes a frame and an axle, and the integral structure is connected between the frame and the axle. With such a setting, the split structure of the left rear swingarm main body 1 and the right rear swingarm main body 2 is adopted, which improves the flexibility of assembly and subsequent wiring. And it is made of magnesium alloy material, which greatly reduces the weight of the rear suspension of the whole electric vehicle, improves the shock absorption performance, enhances the driving comfort, and effectively avoids safety hazards such as rust and fracture to a certain extent, and prolongs its service life.
[0031] In this embodiment, the connecting component includes a plurality of bolts and a plurality of nuts. The bolts sequentially pass through the left rear swingarm main body 1 and the right rear swingarm main body 2 and are threadedly connected to the nuts.
[0032] Optionally, the rear swingarm assembly of the electric vehicle further includes a fastener. A first mounting hole 3 is provided at the front end of the left rear swingarm main body 1, and a second mounting hole 4 is provided at the front end of the right rear swingarm main body 2. The fastener simultaneously passes through the first mounting hole 3 and the second mounting hole 4 and is connected to the frame. Further, two buffer sleeves 14 are respectively pressed on the left rear swingarm main body 1 and the right rear swingarm main body 2. The guide tube 16 is limited between the two buffer sleeves 14 by two rubber rings 15, and relative movement can occur between both buffer sleeves 14 and the frame.
[0033] Optionally, a first slot 5 is provided inside the left rear swingarm main body 1, and a second slot 6 is provided inside the right rear swingarm main body 2. The electric vehicle further includes a first connecting piece, a second connecting piece, a left shock absorber, and a right shock absorber. The first connecting piece passes through the first slot 5 and is connected to the left shock absorber, and the second connecting piece passes through the second slot 6 and is connected to the right shock absorber.
[0034] Further, the rear swingarm assembly of the electric vehicle further includes a first galvanized pipe and a second galvanized pipe. The first galvanized pipe is arranged in the first slot 5, the first connecting piece passes through the first galvanized pipe and is connected to the left shock absorber, the second galvanized pipe is arranged in the second slot 6, and the second connecting piece passes through the second galvanized pipe and is connected to the right shock absorber. With such a setting, due to the relatively soft texture of the magnesium alloy material, relative movement can occur between the left shock absorber and the right shock absorber and the corresponding left rear swingarm main body 1 and right rear swingarm main body 2 respectively. By adding the first galvanized pipe and the second galvanized pipe, it can further prevent wear and prolong its service life.
[0035] Optionally, the electric vehicle further includes a rear fender. A left lifting lug 7 protrudes from the top of the left rear fork main body 1, and a right lifting lug 8 protrudes from the top of the right rear fork main body 2. The rear fender is connected between the left lifting lug 7 and the right lifting lug 8.
[0036] Optionally, to facilitate wiring and prevent the wires of the motor from being worn during long-term use, the electric vehicle further includes a motor. A wire clamp is provided on the inner side of the right rear fork main body 2 or the inner side of the left rear fork main body 1, and the wire clamp is used to fix the wires of the motor.
[0037] Optionally, to further prevent the left rear fork main body 1 and the right rear fork main body 2 from shaking up and down, a first limiting hole 9 is provided on the inner side surface of the left rear fork main body 1, and a second limiting hole is provided on the inner side surface of the right rear fork main body 2. The rear fork assembly of the electric vehicle further includes a positioning pin, and the positioning pin is in interference fit with both the first limiting hole 9 and the second limiting hole at the same time, so that the left rear fork main body 1 and the right rear fork main body 2 are spliced to form a surrounding circle.
[0038] Optionally, to enhance the overall structural strength of the rear fork assembly and improve its shock absorption performance, a plurality of reinforcing ribs 10 are provided on the inner sides of both the left rear fork main body 1 and the right rear fork main body 2.
[0039] Optionally, threaded holes 11 and rear axle grooves 12 are provided at the tails of both the left rear fork main body 1 and the right rear fork main body 2. Further, the rear axle groove 12 has a U-shaped structure. With such a setting, the rear axle groove 12 can limit the anti-rotation device of the motor, and at the same time, the bolt fixes the anti-rotation device of the motor through the threaded hole 11.
[0040] Optionally, a limiting convex column 13 is further provided on the left rear fork main body 1 or the right rear fork main body 2 for the rear brake limiting requirement.
[0041] In this embodiment, a first wire threading groove hole 17 is provided on the left rear fork main body 1, and a second wire threading groove hole 18 is provided on the right rear fork main body 2. The first wire threading groove hole 17 is used to thread the electric vehicle chain, and the second wire threading groove hole 18 is used to thread the brake oil pipeline. A plurality of fixed wire structures are provided inside the surrounding circle to prevent the brake oil pipeline and the electric vehicle chain from being worn during long-term use and ensure reasonable wiring.
[0042] Obviously, the above embodiments of the present utility model are merely examples for clearly explaining the present utility model, and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. A rear fork assembly of an electric vehicle, characterized in that: include: A left rear flat fork body (1) and a right rear flat fork body (2), wherein the left rear flat fork body (1) and the right rear flat fork body (2) are symmetrically arranged, and both the left rear flat fork body (1) and the right rear flat fork body (2) are formed by high-pressure die-casting of a magnesium alloy material; A connecting assembly, wherein the left rear flat fork body (1) and the right rear flat fork body (2) are connected via the connecting assembly to form an integral structure, the electric vehicle comprises a frame and an axle, and the integral structure is connected between the frame and the axle.
2. The rear fork assembly of an electric vehicle according to claim 1, characterized in that: The rear fork assembly of the electric vehicle further comprises a fastener, wherein the front end of the left rear fork body (1) is provided with a first mounting hole (3), and the front end of the right rear fork body (2) is provided with a second mounting hole (4), and the fastener simultaneously passes through the first mounting hole (3) and the second mounting hole (4) and is connected to the vehicle frame.
3. The rear fork assembly of an electric vehicle according to claim 1, characterized in that: A first slot (5) is provided on the inner side of the left rear flat fork body (1), and a second slot (6) is provided on the inner side of the right rear flat fork body (2). The electric vehicle further comprises a first connecting member, a second connecting member, a left shock absorber and a right shock absorber. The first connecting member passes through the first slot (5) and is connected to the left shock absorber, and the second connecting member passes through the second slot (6) and is connected to the right shock absorber.
4. The rear fork assembly of an electric vehicle according to claim 3, characterized in that: The rear flat fork assembly of the electric vehicle further comprises a first galvanized pipe and a second galvanized pipe, wherein the first galvanized pipe is arranged in the first slot hole (5), the first connecting member passes through the first galvanized pipe and is connected to the left shock absorber, and the second galvanized pipe is arranged in the second slot hole (6), the second connecting member passes through the second galvanized pipe and is connected to the right shock absorber.
5. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: The electric vehicle further comprises a rear fender, a left hanging ear (7) protruding from the top of the left rear flat fork body (1), a right hanging ear (8) protruding from the top of the right rear flat fork body (2), and the rear fender is connected between the left hanging ear (7) and the right hanging ear (8).
6. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: The electric vehicle further comprises a motor, and a wire clamp is provided on the inner side of the right rear flat fork body (2) or the inner side of the left rear flat fork body (1), and the wire clamp is used to fix the wires of the motor.
7. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: The inner side surface of the left rear flat fork body (1) is provided with a first limiting hole (9), and the inner side surface of the right rear flat fork body (2) is provided with a second limiting hole. The rear flat fork assembly of the electric vehicle also includes a positioning member, and the positioning member is simultaneously interference-fitted with the first limiting hole (9) and the second limiting hole, so that the left rear flat fork body (1) and the right rear flat fork body (2) are spliced to form an encirclement.
8. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: A plurality of reinforcing ribs (10) are provided on the inner side of the left rear flat fork body (1) and the inner side of the right rear flat fork body (2).
9. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: The tail of the left rear flat fork body (1) and the tail of the right rear flat fork body (2) are both provided with a threaded hole (11) and a rear axle groove (12).
10. The rear fork assembly of an electric vehicle according to any one of claims 1 to 4, characterized in that: The left rear flat fork body (1) or the right rear flat fork body (2) is also provided with a limiting convex column (13).