Rear fork connecting structure

Abstract

The utility model discloses a rear fork connecting structure. Including connecting axle, the connecting axle includes first end and the second end of low intensity than first end, rear fork unit, the connecting end of two branch arms of rear fork unit is assembled on first end and second end of connecting axle respectively, and is equipped with mounting groove at the connecting end, and connecting piece, connecting piece is assembled in mounting groove, the intensity of connecting piece at first end is greater than the intensity of connecting piece at second end. The utility model discloses through setting up the connecting piece of different intensity at the two connecting ends of rear fork and axle, and the high intensity axle end sets up the connecting piece of high intensity, to protect low intensity end through high intensity end, reduce the probability of low intensity end axle fracture, prolong the life.

Description

Technical Field

[0001] This utility model relates to the field of anti-rotation structure technology, and in particular to rear fork connection structure. Background Technology

[0002] The left and right shafts of a hub motor are usually designed with one solid end and the other hollow end. The hollow end is used for cable routing. For hub motors installed on off-road vehicles or e-sports vehicles, the left and right shafts are usually used to install the two control arms of the rear fork. When used for competitive gameplay, the shafts of the hub motor are subjected to greater stress, and the hollow end is prone to breakage. Therefore, the applicant has filed this application. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a rear fork connection structure. By setting connecting pieces of different strengths at the two connection ends of the rear fork and the axle, with the axle end having a higher strength connecting piece, the high-strength end protects the low-strength end, reducing the probability of the low-strength end axle breaking and extending its service life.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: Rear fork connection structure, including A connecting shaft, the connecting shaft including a first end and a second end with a strength lower than the first end; The rear fork unit, wherein the connecting ends of the two support arms of the rear fork unit are respectively mounted on the first and second ends of the connecting shaft, and mounting grooves are provided at the connecting ends; and A connecting piece, which is assembled into the mounting groove; The strength of the connecting piece at the first end is greater than the strength of the connecting piece at the second end.

[0005] In the above technical solution, preferably, the thickness of the connecting piece at the first end is greater than the thickness of the connecting piece at the second end.

[0006] In the above technical solution, preferably, the rear fork is made of aluminum and the connecting piece is made of steel.

[0007] In the above technical solution, preferably, the connecting shaft is the output shaft of the hub motor, and the first end and the second end are respectively arranged on the left and right sides of the hub motor.

[0008] In the above technical solution, preferably, the first end is a solid end and the second end is a hollow end.

[0009] In the above technical solution, preferably, the connecting ends of the two support arms of the rear fork unit are respectively provided with opening slots so as to be assembled onto the connecting shaft through the opening slots.

[0010] In the above technical solution, preferably, the mounting groove is formed on the outer side wall of the two arms of the rear fork unit and is in fluid communication with the opening groove.

[0011] In the above technical solution, preferably, the shape and size of the connecting piece are adapted to the shape and size of the mounting groove, and both of them are non-circular in shape.

[0012] In the above technical solution, preferably, both the shape of the connecting piece and the shape of the mounting groove are polygonal.

[0013] In the above technical solution, preferably, the connecting piece has a through hole that matches the mounting end of the connecting shaft; the connecting shaft is provided with a nut for axially limiting the connecting piece and / or the rear fork unit.

[0014] The beneficial effects of this utility model are: This invention provides connecting plates of different strengths at the two connection ends of the rear fork and the axle. The axle end with higher strength is provided with a high-strength connecting plate, so as to protect the low-strength end through the high-strength end, reduce the probability of the low-strength end axle breaking, and extend the service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation state of this utility model.

[0016] Figure 2 This is a schematic diagram of the disassembled state of this utility model.

[0017] Figure 3 This is a schematic diagram showing the separation state of the rear fork unit and the connecting piece of this utility model.

[0018] Figure 4 This is a schematic diagram of two connecting pieces with different thicknesses according to this utility model.

[0019] Figure 5 This is a schematic diagram of the present invention installed on a wheel. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See Figures 1-5 The rear fork connection structure includes a connecting shaft 1, a rear fork unit 2, and a connecting piece 3.

[0021] The connecting shaft 1 has two ends with different strengths, namely the first end 11 and the second end 12, wherein the strength of the first end 11 is greater than that of the second end 12, such that the first end 11 is a solid end and the second end 12 is a hollow end.

[0022] In one embodiment, the connecting shaft 1 is the output shaft of the hub motor 4. The first end 11 and the second end 12 are respectively arranged on the left and right sides of the hub motor 4. The hollow second end 12 is used for the wiring of the hub motor 4. It has a hollow channel for the wiring to pass through. Therefore, the strength of this end of the hub motor 4 is lower than the strength of the other solid end.

[0023] The rear fork unit 2 includes two support arms 21 arranged on the left and right. One support arm 21 is mounted at the first end 11 and the other support arm 21 is mounted at the second end 12. The two support arms 21 can be separate from each other, or they can be assembled into one piece by connecting parts at their front ends. Of course, the connecting parts and the two support arms can also be integrally formed. For details, please refer to the existing design.

[0024] In one embodiment, the connection between the support arm 21 and the connecting shaft 1 is achieved by providing an opening groove 211 at the connection end of the support arm 21 and the connecting shaft 1, such as at its rear end. The opening groove 211 is fastened to the shaft end (first end 11, second end 12). The shaft end of the connecting shaft 1 is a non-circular end with a cross-section, and the opening groove 211 can be designed as a U-shape accordingly. The rear end of the support arm 21 is assembled to the shaft end of the connecting shaft 1 through the opening end of the opening groove 211.

[0025] In this embodiment, an installation groove 212 is provided on the outer side wall of the connection end of the support arm 21 and the connecting shaft 1. The installation groove 212 can be fluidly connected with the opening groove 211. A through hole 31 adapted to the connection end of the connecting shaft 1 is provided on the connecting piece 3 so as to assemble it at the first end 11 and the second end 12 respectively. Then the connecting piece 3 is snapped into the installation groove 212 so as to form a connection relationship with the support arm 21 of the rear fork unit 2.

[0026] In this embodiment, the shape and size of the connecting piece 3 are adapted to the shape and size of the mounting groove 212, and both of them are non-circular in shape. For example, the shapes of both can be designed as polygons, such as quadrilaterals.

[0027] The non-circular connecting piece 3 cooperates with the rear fork unit 2 to prevent the rear fork unit 2 from rotating. At the same time, the connecting piece 3 bears the force, which solves the wear problem when the rear fork unit 2 is twisted.

[0028] For the material of the rear fork unit 2, aluminum or similar materials can be used, while for the material of the connecting plate 3, steel or similar materials can be used. An aluminum rear fork unit 2 can reduce the weight of the vehicle, while a steel connecting plate 3 can improve the strength of the connection.

[0029] After assembling the rear fork unit 2 and the connecting piece 3, the nut 5, which is threaded to the first end 11 and the second end 12, is installed to axially limit the connecting piece 3 and the rear fork unit 2.

[0030] Because the two ends of the connecting shaft 1 have different strengths (e.g., the first end is solid and the second end is hollow), the hollow end is more prone to breakage. Based on this, in this embodiment, the strength of the connecting piece 3 provided at the first end 11 is greater than the strength of the connecting piece 3 provided at the second end 12. Specifically, the thickness of the connecting piece 3 at the first end 11 is greater than the thickness of the connecting piece 3 at the second end 12. For example, the thickness of the connecting piece 3 at the first end 11 is 6mm and the thickness of the connecting piece 3 at the second end 12 is 3mm; or the connecting piece 3 at the first end 11 is relatively harder and the connecting piece 3 at the second end 12 is relatively softer.

[0031] By adjusting the strength of connecting piece 3 and optimizing the load distribution, the solid end can bear greater force, protecting the hollow end to prevent it from breaking, thereby greatly improving the fatigue life and reliability of the shaft.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rear fork connection structure, characterized in that: include A connecting shaft, the connecting shaft including a first end and a second end with a strength lower than the first end; The rear fork unit has two connecting arms that are respectively mounted on the first and second ends of the connecting shaft, and mounting grooves are provided at the connecting ends. as well as A connecting piece, which is assembled into the mounting groove; The strength of the connecting piece at the first end is greater than the strength of the connecting piece at the second end.

2. The rear fork connection structure according to claim 1, characterized in that: The thickness of the connecting piece at the first end is greater than the thickness of the connecting piece at the second end.

3. The rear fork connection structure according to claim 1 or 2, characterized in that: The rear fork is made of aluminum, and the connecting plate is made of steel.

4. The rear fork connection structure according to claim 1, characterized in that: The connecting shaft is the output shaft of the hub motor, and the first end and the second end are respectively arranged on the left and right sides of the hub motor.

5. The rear fork connection structure according to claim 1 or 4, characterized in that: The first end is a solid end, and the second end is a hollow end.

6. The rear fork connection structure according to claim 1, characterized in that: The two support arms of the rear fork unit are respectively provided with opening slots at their connecting ends, so as to be assembled onto the connecting shaft through the opening slots.

7. The rear fork connection structure according to claim 6, characterized in that: The mounting groove is formed on the outer side wall of the two arms of the rear fork unit and is in fluid communication with the opening groove.

8. The rear fork connection structure according to claim 1, characterized in that: The shape and size of the connecting piece are adapted to the shape and size of the mounting groove, and both of them are non-circular in shape.

9. The rear fork connection structure according to claim 1 or 8, characterized in that: Both the connecting piece and the mounting groove are polygonal in shape.

10. The rear fork connection structure according to claim 1, characterized in that: The connecting piece has through holes that match the mounting end of the connecting shaft; The connecting shaft is provided with a nut for axially limiting the connecting piece and / or the rear fork unit.

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