Auxiliary frame structure of motorcycle

Abstract

The utility model relates to the field of motorcycle frames, in particular to a motorcycle auxiliary frame structure which comprises a left frame and a right frame, the left frame and the right frame comprise a fixing frame and a supporting frame, one end of the supporting frame is fixedly connected to one end of the fixing frame, and the other end of the supporting frame and the other end of the fixing frame are both used for being connected with a main frame. The supporting frame comprises a square and rectangular pipe which is used for being connected to a seat cushion. The square and rectangular pipe can increase the contact area with the seat cushion, the seat cushion can be directly and fixedly installed on the square and rectangular pipe conveniently, other supports do not need to be used for reinforcement, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of motorcycle frames, and in particular to a structure of a motorcycle sub-frame. Background Art

[0002] A motorcycle sub-frame is an auxiliary structure connected to the main frame, and its main functions include supporting or fixing items on the vehicle, blocking vibration and noise to a certain extent, and improving riding comfort.

[0003] With the continuous development of the motorcycle market, the sub-frame, as one of the important components of a motorcycle, has received more and more attention. Common types of sub-frames include rear-mounted, side-mounted, and top-mounted, etc. Among them, the rear-mounted sub-frame is the most common and is usually used on motorcycles that can carry people.

[0004] The seat is fixedly connected to the upper end of the sub-frame, and the seat is for the user to sit on. However, the sub-frame generally uses round tubes for welding. It is not easy to position and install the seat on the round tubes, and other brackets need to be added to reinforce the structure, increasing the production cost. Utility Model Content

[0005] In order to reduce the production cost, this application provides a structure of a motorcycle sub-frame.

[0006] The structure of a motorcycle sub-frame provided by this application adopts the following technical solutions:

[0007] A structure of a motorcycle sub-frame includes left and right frames. The left and right frames include a fixing frame and a supporting frame. One end of the supporting frame is fixedly connected to one end of the fixing frame, and the other ends of the supporting frame and the fixing frame are both used to connect to the main frame. The supporting frame includes a square rectangular tube, and the square rectangular tube is used to connect to the seat.

[0008] By adopting the above technical solutions, the square rectangular tube can increase the contact area with the seat, facilitating the direct fixed installation of the seat on the square rectangular tube without the need to use other brackets for reinforcement, reducing the production cost.

[0009] Preferably, a connecting surface and a positioning surface are provided on the outer wall of the square rectangular tube. The positioning surface is parallel to the connecting surface. The fixing frame is fixedly connected to the connecting surface, and the positioning surface is used to support the seat.

[0010] By adopting the above technical solutions, the positioning surface increases the contact area with the seat, facilitating the installation of the seat. The positioning surface increases the stress area of the left and right frames, making the seat not easily deformed and damaged, reducing the replacement frequency, and reducing the production cost.

[0011] Preferably, it further includes a connecting piece. An installation opening is provided on the positioning surface, and the connecting piece is fixedly connected to the inner wall of the installation opening. The connecting piece is used to fix the covering piece.

[0012] By adopting the above technical solution, the connecting member fixes the support frame and the covering member, facilitating the installation of the covering member and improving the installation efficiency.

[0013] Preferably, the connecting member includes a connecting ring and a connecting column. The connecting column is coaxially and fixedly connected to the inner wall of the connecting ring, and the connecting column is coaxially and fixedly connected to the inner wall of the mounting opening. The connecting ring is used to abut against the positioning surface. The connecting column is coaxially provided with a connecting opening that penetrates the connecting column, and the connecting opening is set as a threaded opening.

[0014] By adopting the above technical solution, the connecting column is fixed in the mounting opening, and the bolt passes through the seat cushion and extends into the connecting opening, realizing the relative fixation of the support frame and the seat cushion, facilitating the installation of the seat cushion and improving the installation efficiency.

[0015] Preferably, the left and right vehicle frames further include a reinforcing bar. One end of the reinforcing bar is fixedly connected to the connecting surface, and the other end of the reinforcing bar is fixedly connected to one end of the fixing frame facing the support frame.

[0016] By adopting the above technical solution, both ends of the reinforcing bar are respectively fixedly connected to the fixing frame and the support frame. The reinforcing bar improves the structural strength of the left and right vehicle frames, making the sub-frame not easily damaged, reducing the replacement frequency, and lowering the production cost.

[0017] Preferably, it further includes a support bar. There are two left and right vehicle frames, and the support bar is arranged between the two left and right vehicle frames. One end of the square rectangular tube facing the support bar is provided with a fixing surface perpendicular to the connecting surface, and both ends of the support bar are respectively fixedly connected to the two fixing surfaces.

[0018] By adopting the above technical solution, both ends of the support bar are respectively fixedly connected to the two support frames. The support bar improves the overall structural strength of the sub-frame. At the same time, the support bar increases the contact area between the sub-frame and the seat cushion, making the seat cushion not easily deformed and damaged, reducing the replacement frequency, and lowering the production cost.

[0019] Preferably, it further includes a connecting frame. Both ends of the connecting frame are respectively fixedly connected to the outer walls of the two fixing frames.

[0020] By adopting the above technical solution, both ends of the connecting frame are respectively fixedly connected to the two fixing frames. The connecting frame improves the overall structural strength of the sub-frame, making the sub-frame not easily damaged, reducing the replacement frequency, and lowering the production cost.

[0021] Preferably, it further includes a support plate. Both ends of the support plate are fixedly connected to the ends of the two square rectangular tubes, and the support plate is used to fix the seat cushion lock, electrical components, and license plate bracket.

[0022] By adopting the above technical solution, the support plate is fixed to the two square tubes, which not only enhances the structural strength of the subframe, but also can fix the seat lock, electrical components and license plate bracket, thereby enhancing the overall structural strength.

[0023] Preferably, the support plate is provided with a fixing opening, the fixing opening penetrates the support plate along the thickness direction of the support plate, and the fixing opening is configured as a threaded opening.

[0024] By adopting the above technical solution, the fixing opening enables the seat cushion lock, electrical components and license plate bracket to be detachably installed on the support plate, integrating the installation points and reducing the number of brackets.

[0025] Preferably, one end of the support plate facing the square tube is fixedly connected with two positioning columns, and the positioning columns are embedded in the tube opening of the square tube.

[0026] By adopting the above technical solution, the positioning column facilitates the positioning and installation of the support plate on the square tube, thereby improving the installation efficiency.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The square tube can increase the contact area with the seat cushion, making it easier for the seat cushion to be directly fixed on the square tube without the need for other brackets to reinforce it, thus reducing production costs;

[0029] 2. The positioning surface increases the contact area with the seat cushion, making it easier to install the seat cushion. The positioning surface increases the force-bearing area of the left and right frames, making the seat cushion less likely to deform and be damaged, reducing the frequency of replacement and reducing production costs;

[0030] 3. Both ends of the support rod are fixedly connected to the two support frames respectively. The support rod improves the overall structural strength of the subframe. At the same time, the support rod increases the contact area between the subframe and the seat cushion, making the seat cushion less likely to be deformed and damaged, reducing the frequency of replacement and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a motorcycle subframe structure.

[0032] Figure 2 It is a cross-sectional view of a motorcycle subframe structure.

[0033] Figure 3 It is a schematic diagram of the internal structure of a motorcycle subframe structure after being cut open.

[0034] Description of reference numerals: 1, left and right frames; 11, fixing frame; 12, support frame; 121, rectangular tube; 1211, connecting surface; 1212, positioning surface; 1213, mounting opening; 1214, fixing surface; 13, reinforcing bar; 2, connecting member; 21, connecting ring; 22, connecting column; 221, connecting opening; 3, support bar; 4, connecting frame; 5, support plate; 51, positioning column; 52, fixing opening. Detailed implementation mode

[0035] The following will further describe this application in detail Figures 1-3 in conjunction with the accompanying drawings.

[0036] An embodiment of this application discloses a structure of a motorcycle sub-frame. Refer to Figure 1 , a structure of a motorcycle sub-frame includes a left and right frame 1, a connecting member 2, a support bar 3, a connecting frame 4 and a support plate 5.

[0037] The left and right frames 1 include a fixing frame 11, a support frame 12 and a reinforcing bar 13. One end of the support frame 12 is fixedly connected to one end of the fixing frame 11. The other end of the support frame 12 and the other end of the fixing frame 11 are both used to connect to the main frame. The included angle between the support frame 12 and the fixing frame 11 is set as an acute angle. The support frame 12 includes a rectangular tube 121, and the rectangular tube 121 is used to connect to the seat cushion.

[0038] Refer to Figure 2 , the outer wall of the rectangular tube 121 is provided with a connecting surface 1211 and a positioning surface 1212. The positioning surface 1212 is parallel to the connecting surface 1211. One end of the fixing frame 11 is fixedly connected to the connecting surface 1211. The positioning surface 1212 is used to support the seat cushion. The positioning surface 1212 is provided with three mounting openings 1213, and the three mounting openings 1213 are arranged at intervals along the extending direction of the rectangular tube 121.

[0039] The connecting member 2 includes a connecting ring 21 and a connecting column 22. The connecting column 22 is coaxially and fixedly connected to the inner wall of the connecting ring 21. The connecting column 22 is coaxially and fixedly connected to the inner wall of the mounting opening 1213. The connecting ring 21 is used to abut against the positioning surface 1212. The connecting column 22 is coaxially provided with a connecting opening 221, and the connecting opening 221 penetrates through the connecting column 22. The connecting opening 221 is set as a threaded opening.

[0040] Refer to Figure 2, the reinforcing bars 13 are arranged between the fixing frame 11 and the supporting frame 12. One end of each reinforcing bar 13 is fixedly connected to the connecting surface 1211, and the other end of each reinforcing bar 13 is fixedly connected to one end of the fixing frame 11 facing the supporting frame 12. There are two reinforcing bars 13, and the two reinforcing bars 13 are arranged at intervals along the length direction of the supporting frame 12. The distance from one reinforcing bar 13 to the main frame is greater than the distance from the other reinforcing bar 13 to the main frame. The included angle between the length direction of one reinforcing bar 13 and the length direction of the fixing frame 11 is set as an obtuse angle, and the included angle between the length direction of the other reinforcing bar 13 and the length direction of the fixing frame 11 is set as an acute angle.

[0041] Refer to Figure 1 , there are two left and right frames 1, the support rod 3 is arranged between the two left and right frames 1. One end of the square rectangular tube 121 facing the support rod 3 is provided with a fixing surface 1214, and the fixing surface 1214 is perpendicular to the connecting surface 1211. The two ends of the support rod 3 are respectively fixedly connected to the two fixing surfaces 1214. The two ends of the connecting frame 4 are respectively fixedly connected to the outer walls of the two fixing frames 11.

[0042] Refer to Figure 3 , the two ends of the support plate 5 are fixedly connected to the ends of the two square rectangular tubes 121, and the support plate 5 is used to fix the storage box. Two positioning columns 51 are fixedly connected to one end of the support plate 5 facing the square rectangular tube 121. The positioning columns 51 are embedded in the pipe orifice at one end of the square rectangular tube 121 far from the main frame, and the outer walls of the positioning columns 51 are welded to the square rectangular tube 121. The support plate 5 is provided with fixing openings 52, and the fixing openings 52 penetrate through the support plate 5 along the thickness direction of the support plate 5. The fixing openings 52 are set as threaded openings, and there are multiple fixing openings 52, and the multiple fixing openings 52 are distributed at intervals on the support plate 5.

[0043] The implementation principle of a motorcycle sub-frame structure in an embodiment of this application is as follows: weld the fixing frame 11 on the connecting surface 1211, weld the support rod 3 on the fixing surface 1214, weld the connecting frame 4 on the fixing frame 11, insert the positioning column 51 into the pipe orifice of the square rectangular tube 121, weld the support plate 5 on the square rectangular tube 121, insert the connecting column 22 into the installation opening 1213 so that the connecting ring 21 fits the positioning surface 1212, fix the seat cushion by inserting a bolt into the connecting opening 221, and fix the seat cushion lock by inserting a bolt into the fixing opening 52.

[0044] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A motorcycle subframe structure, characterized in that: It includes left and right frames (1), and the left and right frames (1) include a fixed frame (11) and a support frame (12). One end of the support frame (12) is fixedly connected to one end of the fixed frame (11), and the other end of the support frame (12) and the other end of the fixed frame (11) are both used to connect to the main frame. The support frame (12) includes a square rectangular tube (121), and the square rectangular tube (121) is used to connect to the seat cushion.

2. The motorcycle subframe structure according to claim 1, characterized in that: The outer wall of the square rectangular tube (121) is provided with a connection surface (1211) and a positioning surface (1212). The positioning surface (1212) is parallel to the connection surface (1211). The fixed frame (11) is fixedly connected to the connection surface (1211), and the positioning surface (1212) is used to support the seat cushion.

3. The motorcycle subframe structure according to claim 2, wherein: It further includes a connecting piece (2). The positioning surface (1212) is provided with an installation opening (1213). The connecting piece (2) is fixedly connected to the inner wall of the installation opening (1213), and the connecting piece (2) is used to fix the covering piece.

4. The motorcycle subframe structure according to claim 3, characterized in that: The connecting piece (2) includes a connecting ring (21) and a connecting column (22). The connecting column (22) is coaxially and fixedly connected to the inner wall of the connecting ring (21). The connecting column (22) is coaxially and fixedly connected to the inner wall of the installation opening (1213). The connecting ring (21) is used to abut against the positioning surface (1212). The connecting column (22) is coaxially provided with a connection opening (221). The connection opening (221) penetrates through the connecting column (22), and the connection opening (221) is set as a threaded opening.

5. The motorcycle subframe structure according to claim 2, characterized in that: The left and right frames (1) further include a reinforcing rod (13). One end of the reinforcing rod (13) is fixedly connected to the connection surface (1211), and the other end of the reinforcing rod (13) is fixedly connected to one end of the fixed frame (11) facing the support frame (12).

6. The motorcycle subframe structure according to claim 2, characterized in that: It further includes a support rod (3). There are two left and right frames (1). The support rod (3) is arranged between the two left and right frames (1). One end of the square rectangular tube (121) facing the support rod (3) is provided with a fixed surface (1214). The fixed surface (1214) is perpendicular to the connection surface (1211). The two ends of the support rod (3) are respectively fixedly connected to the two fixed surfaces (1214).

7. A motorcycle subframe structure according to claim 6, characterized in that: It further includes a connecting frame (4). The two ends of the connecting frame (4) are respectively fixedly connected to the outer walls of the two fixed frames (11).

8. A motorcycle subframe structure according to claim 6, characterized in that: It further includes a support plate (5). The two ends of the support plate (5) are fixedly connected to the ends of the two square rectangular tubes (121). The support plate (5) is used to fix the seat lock, electrical components and license plate bracket.

9. The motorcycle subframe structure according to claim 8, characterized in that: The support plate (5) is provided with a fixing opening (52). The fixing opening (52) penetrates through the support plate (5) along the thickness direction of the support plate (5), and the fixing opening (52) is set as a threaded opening.

10. A motorcycle subframe structure according to claim 8, characterized in that: One end of the support plate (5) facing the square rectangular tube (121) is fixedly connected with two positioning columns (51). The positioning columns (51) are embedded in the pipe orifice of the square rectangular tube (121).

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