Motorcycle frame

Abstract

The utility model provides a motorcycle frame which solves the problem that an existing motorcycle frame is poor in anti-collision capacity. The motorcycle frame comprises a front round pipe, an engine bracket and a connecting frame arranged above the engine bracket, the front end and the rear end of the engine bracket are fixedly connected with the lower end of the front round pipe and the rear end of the connecting frame respectively, and the rear side of the connecting frame is fixedly connected with a seat cushion frame. The front end of each connecting pipe is composed of a front pipe part, a rear pipe part and an arc pipe with the two ends connected with the front pipe part and the rear pipe part respectively, and the circle center of the arc pipe is located between the two connecting pipes. The two front pipe parts are arranged in a V shape and fixedly connected with the upper end of the front round pipe, an installation cavity is formed between the two front pipe parts, a reinforcing plate is arranged in the installation cavity and is of a trapezoidal structure matched with the installation cavity in shape and size, and the left side and the right side of the reinforcing plate are attached to and fixed to the two front pipe parts respectively; and the rear pipe part is obliquely arranged downwards. The motorcycle frame is high in collision resistance.

Description

Technical Field

[0001] The utility model belongs to the field of motor vehicles and relates to a motorcycle, in particular to a motorcycle frame. Background Art

[0002] The motorcycle frame is an important component of the motorcycle. It is not only the skeleton of the entire vehicle, but also carries multiple key functions.

[0003] The existing motorcycle frame, such as the motorcycle frame disclosed in the Chinese Patent Library (application number: 03249480.7), includes a seat tube, and the key points are: one end of the front support tube, the left front tube, and the right front tube are connected to the seat tube in a triangular cone frame shape; the left and right support tubes and the upper support tube are connected to the front support tube and the left and right front tubes in a triangular shape; the other ends of the left and right front tubes are respectively connected to the left and right connecting plates and one end of the left and right connecting plate reinforcement plates; the two ends of the upper and lower cross tubes are respectively connected to the left and right connecting plate reinforcement plates; one end of the left and right lower tubes is connected to the front support tube, and the other end is connected to the left and right connecting plates and the left and right connecting plate reinforcement plates.

[0004] In the above frame, the left and right front tubes are connected only by an upper support tube arranged therebetween, which affects the anti-collision performance of the front tubes. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a motorcycle frame, which solves the technical problem of how to enhance the anti-collision capability of the front part.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a motorcycle frame, including a front circular tube, an engine bracket and a connecting frame arranged above the engine bracket, the front and rear ends of the engine bracket are respectively fixedly connected to the lower end of the front circular tube and the rear end of the connecting frame, the rear side of the connecting frame is fixedly connected to the seat cushion frame, the connecting frame includes two connecting tubes symmetrically arranged on the left and right, characterized in that the front end of the connecting tube is composed of a front tube part, a rear tube part and an arc tube whose two ends are respectively connected to the front tube part and the rear tube part, and the center of the arc tube is located between the two connecting tubes; the two front tube parts are arranged in a V shape and are both fixedly connected to the upper end of the front circular tube, and an installation cavity is formed between the two front tube parts, and a reinforcing plate is arranged in the installation cavity, the reinforcing plate is a trapezoidal structure whose shape and size match the installation cavity, and the left and right sides of the reinforcing plate are respectively fixed on the two front tube parts; the rear tube part is arranged obliquely downward.

[0007] The two front tubes are arranged in a V shape and are both supported forward by an arc tube, which can effectively enhance the self-compressive strength of the front tubes; at the same time, a matching trapezoidal reinforcement plate is provided between the two front tubes to connect the two front tubes more securely, thereby effectively enhancing the compressive performance of the front end of the connecting frame, enhancing the anti-collision ability of the front part of the frame, and improving safety performance.

[0008] In the above motorcycle frame, the upper side of the arc tube is concave downward to form an arc groove, and the arc groove and the corresponding arc tube are coaxially arranged. The arrangement of the arc groove can enhance the lateral compressive strength of the arc tube, thereby providing stronger support for the front tube part and improving the anti-collision ability of the front part of the frame.

[0009] In the above-mentioned motorcycle frame, the front end of the reinforcing plate is pressed on the front round tube to increase the contact area between the connecting frame and the front round tube, thereby providing a stronger supporting force.

[0010] In the above motorcycle frame, a circular arc notch is formed at the front end of the reinforcing plate along the thickness direction of the reinforcing plate, and the inner wall of the circular arc notch is attached to the outer wall of the front round tube to further increase the contact area between the connecting frame and the front round tube.

[0011] In the above motorcycle frame, a U-shaped reinforcement frame is horizontally arranged below the rear pipe, and the two ends of the reinforcement frame are respectively fixedly connected to the lower sides of the two rear pipes. The reinforcement frame connects the two rear pipes to form a whole, thereby greatly strengthening the support strength of the connection frame on the front round pipe, so that the front part of the frame has better anti-collision ability.

[0012] In the above-mentioned motorcycle frame, a support tube is provided between the two arc tubes and the engine bracket. The support tube is arranged obliquely upward, and the two ends of the support tube are respectively fixedly connected to the engine bracket and the corresponding arc tube, so that the connecting frame has a stronger anti-collision ability.

[0013] Compared with the prior art, the motorcycle frame has the following advantages:

[0014] 1. The two front tubes are arranged in a V shape and are supported forward by an arc tube, which can effectively enhance the self-compressive strength of the front tubes; at the same time, a matching trapezoidal reinforcement plate is arranged between the two front tubes to connect the two front tubes more firmly, thereby effectively enhancing the compressive performance of the front end of the connecting frame and enhancing the anti-collision ability of the front part of the frame to improve safety performance.

[0015] 2. The setting of the arc groove can enhance the lateral compressive strength of the arc tube, thereby providing stronger support for the front tube and improving the anti-impact ability of the front part of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the motorcycle frame.

[0017] Figure 2 It is a schematic diagram of the connection between the front ends of the two connecting pipes and the front circular pipe.

[0018] Figure 3 It is a left side schematic diagram of the motorcycle frame.

[0019] In the figure, 1, front round tube; 2, engine bracket; 3, connecting frame; 3a, connecting tube; 3a1, front tube part; 3a2, rear tube part; 3a3, arc tube; 3a4, arc groove; 4, seat cushion frame; 5, reinforcement plate; 5a, arc notch; 6, reinforcement frame; 7, support tube. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 and Figure 3 As shown, the motorcycle frame includes a front round tube 1, an engine bracket 2, a connecting frame 3 arranged above the engine bracket 2, and a seat cushion frame 4 fixed to the rear side of the connecting frame 3. Among them, the structures of the engine bracket 2 and the seat cushion frame 4 are both existing, and the front and rear ends of the engine bracket 2 are respectively fixedly connected to the lower end of the front round tube 1 and the rear end of the connecting frame 3.

[0022] in,

[0023] The connecting frame 3 includes two connecting pipes 3a which are symmetrically arranged on the left and right sides, and the connecting pipes 3a are an integrated structure. Figure 1 and Figure 2 As shown, the front end of the connecting tube 3a is fixedly connected to the upper end of the front circular tube 1, and the front end of the connecting tube 3a is composed of a front tube portion 3a1, a rear tube portion 3a2, and an arc tube 3a3 whose two ends are respectively connected to the front tube portion 3a1 and the rear tube portion 3a2, wherein the arc tube 3a3 is located between the corresponding front tube portion 3a1 and the rear tube portion 3a2, and the center of the arc tube 3a3 is located between the two connecting tubes 3a; the front end of the front tube portion 3a1 is fixedly connected to the upper end of the front circular tube 1, the two front tube portions 3a1 are arranged in a V shape, and an installation cavity is formed between the two front tube portions 3a1, and a reinforcing plate 5 is provided in the installation cavity, the reinforcing plate 5 is a trapezoidal structure whose shape and size match the installation cavity, and the left and right sides of the reinforcing plate 5 are respectively fixed on the two front tube portions 3a1; the rear tube portion 3a2 is arranged obliquely downward.

[0024] The two front tubes 3a1 are arranged in a V shape and are both supported forward by an arc tube 3a3, which can effectively enhance the self-compressive strength of the front tube 3a1; at the same time, a matching trapezoidal reinforcing plate 5 is provided between the two front tubes 3a1, so that the two front tubes 3a1 are more securely connected together, thereby effectively enhancing the compressive performance of the front end of the connecting frame 3, enhancing the anti-collision ability of the front part of the frame, and improving the safety performance.

[0025] In this embodiment,

[0026] The front end of the reinforcing plate 5 is pressed on the front circular tube 1 to increase the contact area between the connecting frame 3 and the front circular tube 1, and provide stronger support strength. Further explanation: the front end of the reinforcing plate 5 is penetrated by a circular arc notch 5a along the thickness direction of the reinforcing plate 5, and the inner wall of the circular arc notch 5a is attached to the outer wall of the front circular tube 1, so as to further increase the contact area between the connecting frame 3 and the front circular tube 1.

[0027] The upper side of the arc tube 3a3 is concave downward to form an arc groove 3a4, and the arc groove 3a4 is coaxially arranged with the corresponding arc tube 3a3. The arrangement of the arc groove 3a4 can strengthen the lateral compressive strength of the arc tube 3a3, thereby providing more powerful support for the front tube 3a1 and improving the anti-collision ability of the front part of the frame.

[0028] like Figure 1 and Figure 3 As shown, a U-shaped reinforcement frame 6 is horizontally arranged below the rear pipe portion 3a2, and the two ends of the reinforcement frame 6 are respectively fixedly connected to the lower sides of the two rear pipe portions 3a2. The reinforcement frame 6 connects the two rear pipe portions 3a2 to form a whole, thereby greatly strengthening the support strength of the connecting frame 3 on the front round pipe 1, so that the front part of the frame has better anti-collision ability. A support pipe 7 is arranged between the two arc pipes 3a3 and the engine bracket 2, and the support pipe 7 is arranged obliquely upward, and the two ends of the support pipe 7 are respectively fixedly connected to the engine bracket 2 and the corresponding arc pipe 3a3, so that the connecting frame 3 has a stronger anti-collision ability.

[0029] In actual products, all components are connected by welding.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A motorcycle frame, comprising a front round tube (1), an engine bracket (2) and a connecting frame (3) arranged above the engine bracket (2), the front and rear ends of the engine bracket (2) being respectively fixedly connected to the lower end of the front round tube (1) and the rear end of the connecting frame (3), the rear side of the connecting frame (3) being fixedly connected to a seat cushion frame (4), the connecting frame (3) comprising two connecting tubes (3a) arranged symmetrically on the left and right, characterized in that: The front end of the connecting tube (3a) is composed of a front tube portion (3a1), a rear tube portion (3a2), and an arc tube (3a3) at both ends of which are respectively connected to the front tube portion (3a1) and the rear tube portion (3a2), and the center of the arc tube (3a3) is located between the two connecting tubes (3a); the two front tube portions (3a1) are arranged in a V shape and are both fixedly connected to the upper end of the front circular tube (1); an installation cavity is formed between the two front tube portions (3a1), and a reinforcing plate (5) is provided in the installation cavity. The reinforcing plate (5) is a trapezoidal structure whose shape and size match the installation cavity, and the left and right sides of the reinforcing plate (5) are respectively abutted and fixed on the two front tube portions (3a1); and the rear tube portion (3a2) is arranged obliquely downward.

2. The motorcycle frame according to claim 1, characterized in that: The upper side of the circular arc tube (3a3) is concave downward to form a circular arc groove (3a4), and the circular arc groove (3a4) and the corresponding circular arc tube (3a3) are coaxially arranged.

3. The motorcycle frame according to claim 1 or 2, characterized in that: The front end of the reinforcing plate (5) is pressed onto the front circular tube (1).

4. The motorcycle frame according to claim 3, characterized in that: A circular arc notch (5a) is formed at the front end of the reinforcing plate (5) along the thickness direction of the reinforcing plate (5), and the inner wall of the circular arc notch (5a) is attached to the outer wall of the front circular tube (1).

5. The motorcycle frame according to claim 1, characterized in that: A U-shaped reinforcement frame (6) is horizontally provided below the rear pipe portion (3a2), and two ends of the reinforcement frame (6) are respectively fixedly connected to the lower sides of the two rear pipe portions (3a2).

6. The motorcycle frame according to claim 1, characterized in that: A support tube (7) is provided between the two arc tubes (3a3) and the engine bracket (2); the support tube (7) is arranged obliquely upward, and two ends of the support tube (7) are respectively fixedly connected to the engine bracket (2) and the corresponding arc tube (3a3).

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