A flat fork structure of an electric motorcycle frame

Abstract

The utility model relates to the technical field of motorcycle flat fork, specifically relates to a flat fork structure of electric motorcycle frame, including first flat fork swing arm and second flat fork swing arm, be connected with first connecting rod on first flat fork swing arm, be connected with second connecting rod on second flat fork swing arm, be provided with adjusting portion between first connecting rod and second connecting rod, the adjusting portion is used for adjusting the interval between first flat fork swing arm and second flat fork swing arm, namely adjusting the size of the opening of flat fork structure, the hinged seat for connecting shock absorber is all set up on first flat fork swing arm and second flat fork swing arm, and the position of hinged seat on first flat fork swing arm and second flat fork swing arm is adjustable. The utility model, can adjust the interval between first flat fork swing arm and second flat fork swing arm, namely can adjust the size of the opening of flat fork according to actual installation condition, is convenient for adapting to different specifications rear wheel axle, and still can change the installation position of hinged seat, namely can adjust the inclination of subsequent shock absorber installation.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle swingarm technology, and in particular to a swingarm structure for an electric motorcycle frame. Background Technology

[0002] The swingarm is an important component of a motorcycle and belongs to the suspension system. The rear swingarm is a fork-shaped support component that connects the frame and the rear wheel. The rear swingarm includes two swingarm arms and an axle tube fixed to the front end of the swingarm arm tube, so that the swingarm can rotate on the motorcycle frame through the axle tube. The rear end of the swingarm arm is provided with a rear wheel axle mounting hole for mounting the rear wheel.

[0003] For example, Chinese patent CN212172432U discloses a rear swingarm with a novel shock-absorbing mounting base, which belongs to the field of rear swingarm technology. The box-shaped structural connector is connected to the arc-shaped swingarm arm, which solves the problem that the shock-absorbing mounting base must bear the force directly on the swingarm arm.

[0004] In the aforementioned comparative patent, the box structure connector is fixedly connected between the two swingarms, which makes the opening width of the swingarm structure fixed, meaning the opening size cannot be adjusted. This results in the swingarm structure only being able to adapt to a certain size of rear wheel axle, lacking versatility and having low adaptability, thus requiring improvement. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a flat fork structure for an electric motorcycle frame, so as to solve the problem that the opening width (i.e., the opening) of the existing flat fork cannot be adjusted, which makes it difficult to adapt to different specifications of rear wheel axles and results in a lack of universality.

[0006] To achieve the above objectives, this utility model provides a swingarm structure for an electric motorcycle frame, including a first swingarm rocker arm and a second swingarm rocker arm. A bushing is installed at one end of each swingarm rocker arm, and a mounting groove for mounting a rear wheel is provided at the other end. A first connecting rod is connected to the first swingarm rocker arm, and a second connecting rod is connected to the second swingarm rocker arm. An adjustment part is provided between the first and second connecting rods. The adjustment part is used to adjust the distance between the first and second swingarm rocker arms, i.e., to adjust the opening size of the swingarm structure. A hinge seat for connecting a shock absorber is provided on both the first and second swingarm rocker arms, and the position of the hinge seat on the first and second swingarm rocker arms is adjustable. Preferably, the adjusting part includes a first L-shaped plate and a second L-shaped plate. The first L-shaped plate is fixed to the end of the first connecting rod, and the second L-shaped plate is fixed to the end of the second connecting rod. A first groove adapted to the second L-shaped plate is provided on the first connecting rod, and a second groove adapted to the first L-shaped plate is provided on the second connecting rod. Locking components are provided on both the first groove and the second groove.

[0007] Preferably, the locking assembly includes a first locking bolt and a second locking bolt. The first locking bolt is fixed on a first groove, and the second locking bolt is fixed on a second groove. A first arc-shaped through groove is provided on the first L-shaped plate for the second locking bolt to pass through, and a second arc-shaped through groove is provided on the second L-shaped plate for the first locking bolt to pass through. Both the first locking bolt and the second locking bolt are threaded with locking nuts.

[0008] Preferably, the first flat fork rocker arm, the first connecting rod, and the first L-shaped plate are all integrally formed structures, and the second flat fork rocker arm, the second connecting rod, and the second L-shaped plate are all integrally formed structures.

[0009] Preferably, both the first and second flat fork rocker arms are provided with strip grooves, and the hinge seat is movably disposed in the strip grooves.

[0010] Preferably, the inner wall of the strip groove is provided with multiple mounting holes, the hinge seat is provided with two through holes, a positioning bolt is inserted into the hinge seat through the mounting holes and the through holes, and a positioning nut is threaded onto the positioning bolt.

[0011] The beneficial effects of this utility model are as follows: The electric motorcycle frame flat fork structure provided by this utility model can adjust the distance between the first flat fork rocker arm and the second flat fork rocker arm by setting the adjustment part, that is, it can adjust the opening size of the flat fork according to the actual installation situation, which is convenient to adapt to different specifications of rear wheel axles. Furthermore, by setting the strip groove, mounting hole and positioning bolt, the installation position of the hinge seat can be changed, that is, the tilt of the subsequent shock absorber can be adjusted. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A schematic diagram of the structure after the first and second horizontal fork rockers are separated.

[0015] Figure 3 This is a schematic diagram of the structure of the first and second flat fork rocker arms of this utility model.

[0016] In the diagram: 1. First horizontal fork rocker arm; 2. Second horizontal fork rocker arm; 3. First connecting rod; 4. Second connecting rod; 5. Adjustment part; 51. First L-shaped plate; 52. Second L-shaped plate; 53. First locking bolt; 54. Second locking bolt; 55. First arc-shaped through groove; 56. Second arc-shaped through groove; 6. Hinge seat; 7. Strip groove; 8. Mounting hole; 9. Positioning bolt. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, a swingarm structure for an electric motorcycle frame includes a first swingarm rocker arm 1 and a second swingarm rocker arm 2. One end of each swingarm rocker arm is fitted with a bushing, and the other end has a mounting groove for mounting a rear wheel. A first connecting rod 3 is connected to the first swingarm rocker arm 1, and a second connecting rod 4 is connected to the second swingarm rocker arm 2. An adjustment part 5 is provided between the first connecting rod 3 and the second connecting rod 4. The adjustment part 5 is used to adjust the distance between the first swingarm rocker arm 1 and the second swingarm rocker arm 2, i.e., to adjust the opening size of the swingarm structure. Both the first swingarm rocker arm 1 and the second swingarm rocker arm 2 are provided with hinge seats 6 for connecting shock absorbers, and the position of the hinge seats 6 on the first swingarm rocker arm 1 and the second swingarm rocker arm 2 is adjustable.

[0020] The adjustment unit 5 allows for adjustment of the distance between the first horizontal fork rocker arm 1 and the second horizontal fork rocker arm 2, i.e., adjustment of the opening width of the horizontal fork, to accommodate different sizes of rear wheel axles. The position of the hinge seat 6 is adjustable, allowing for adjustment of the tilt angle of the subsequent installation of the shock absorber. The adjustable position of the hinge seat 6 (shock absorber) is a high degree of freedom of the suspension system, enabling the vehicle to dynamically adjust its suspension performance.

[0021] In a preferred embodiment of the present invention, the adjusting part 5 includes a first L-shaped plate 51 and a second L-shaped plate 52. The first L-shaped plate 51 is fixed on the end of the first connecting rod 3, and the second L-shaped plate 52 is fixed on the end of the second connecting rod 4. A first groove adapted to the second L-shaped plate 52 is provided on the first connecting rod 3, and a second groove adapted to the first L-shaped plate 51 is provided on the second connecting rod 4. Locking components are provided on both the first groove and the second groove.

[0022] The locking assembly includes a first locking bolt 53 and a second locking bolt 54. The first locking bolt 53 is fixed on a first groove, and the second locking bolt 54 is fixed on a second groove. A first arc-shaped through groove 55 is provided on the first L-shaped plate 51 for the second locking bolt 54 to pass through. A second arc-shaped through groove 56 is provided on the second L-shaped plate 52 for the first locking bolt 53 to pass through. Locking nuts are threaded onto both the first locking bolt 53 and the second locking bolt 54.

[0023] When it is necessary to change the opening width of the flat fork, that is, to adjust the distance between the first flat fork rocker arm 1 and the second flat fork rocker arm 2, loosen the locking nuts on the first locking bolt 53 and the second locking bolt 54, and then pull the first flat fork rocker arm 1 and the second flat fork rocker arm 2 outward. During the movement of the flat fork rocker arm, the first locking bolt 53 and the second locking bolt 54 play a guiding role. After moving to the appropriate position, tighten the locking nuts to complete the adjustment of the opening width of the flat fork. In addition, the first L-shaped plate 51 and the second L-shaped plate 52 improve the connection strength of the first connecting rod 3 and the second connecting rod 4.

[0024] In another preferred embodiment of this utility model, the first flat fork rocker arm 1, the first connecting rod 3 and the first L-shaped plate 51 are all integrally formed structures, and the second flat fork rocker arm 2, the second connecting rod 4 and the second L-shaped plate 52 are all integrally formed structures. The integrally formed structure increases the robustness of the relevant structures.

[0025] In another preferred embodiment of the present invention, both the first flat fork rocker arm 1 and the second flat fork rocker arm 2 are provided with strip grooves 7, and the hinge seat 6 is movably disposed in the strip grooves 7.

[0026] The inner wall of the strip groove 7 is provided with multiple mounting holes 8, and the hinge seat 6 is provided with two through holes. A positioning bolt 9 that passes through the mounting hole 8 is inserted into the hinge seat 6, and a positioning nut is threaded onto the positioning bolt 9.

[0027] When it is necessary to change the tilt of the shock absorber, loosen the positioning nut, remove the positioning bolt 9, and then move the hinge seat 6 in the strip groove 7 to change its position. After the position is moved, insert the positioning bolt 9 and tighten the positioning nut. That is, the tilt of the shock absorber can be adjusted by changing the position of the hinge seat 6.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0029] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A swingarm structure for an electric motorcycle frame, comprising a first swingarm rocker arm (1) and a second swingarm rocker arm (2), wherein a bushing is mounted on one end of the first swingarm rocker arm (1) and the second swingarm rocker arm (2), and a mounting groove for mounting a rear wheel is provided on the other end, characterized in that, A first connecting rod (3) is connected to the first flat fork rocker arm (1), and a second connecting rod (4) is connected to the second flat fork rocker arm (2). An adjustment part (5) is provided between the first connecting rod (3) and the second connecting rod (4). The adjustment part (5) is used to adjust the distance between the first flat fork rocker arm (1) and the second flat fork rocker arm (2), that is, to adjust the opening width of the flat fork structure. A hinge seat (6) for connecting the shock absorber is provided on both the first flat fork rocker arm (1) and the second flat fork rocker arm (2), and the position of the hinge seat (6) on the first flat fork rocker arm (1) and the second flat fork rocker arm (2) is adjustable.

2. The flat fork structure of an electric motorcycle frame according to claim 1, characterized in that, The adjustment part (5) includes a first L-shaped plate (51) and a second L-shaped plate (52). The first L-shaped plate (51) is fixed on the end of the first connecting rod (3), and the second L-shaped plate (52) is fixed on the end of the second connecting rod (4). A first groove adapted to the second L-shaped plate (52) is provided on the first connecting rod (3), and a second groove adapted to the first L-shaped plate (51) is provided on the second connecting rod (4). Locking components are provided on both the first groove and the second groove.

3. The flat fork structure of an electric motorcycle frame according to claim 2, characterized in that, The locking assembly includes a first locking bolt (53) and a second locking bolt (54). The first locking bolt (53) is fixed on the first groove, and the second locking bolt (54) is fixed on the second groove. A first arc-shaped through groove (55) is provided on the first L-shaped plate (51) for the second locking bolt (54) to pass through. A second arc-shaped through groove (56) is provided on the second L-shaped plate (52) for the first locking bolt (53) to pass through. Locking nuts are threaded onto both the first locking bolt (53) and the second locking bolt (54).

4. The flat fork structure of an electric motorcycle frame according to claim 2, characterized in that, The first flat fork rocker arm (1), the first connecting rod (3) and the first L-shaped plate (51) are all integrally formed structures, and the second flat fork rocker arm (2), the second connecting rod (4) and the second L-shaped plate (52) are all integrally formed structures.

5. The flat fork structure of an electric motorcycle frame according to claim 1, characterized in that, The first flat fork rocker arm (1) and the second flat fork rocker arm (2) are both provided with strip grooves (7), and the hinge seat (6) is movably disposed in the strip grooves (7).

6. The flat fork structure of an electric motorcycle frame according to claim 5, characterized in that, The inner wall of the strip groove (7) is provided with multiple mounting holes (8), and the hinge seat (6) is provided with two through holes. A positioning bolt (9) that passes through the mounting hole (8) and the through hole is inserted into the hinge seat (6), and a positioning nut is threaded on the positioning bolt (9).

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