Tail structure of auxiliary frame of motorcycle

By designing the rear side beam and support mechanism of the motorcycle subframe rear structure, the problem of inconvenient disassembly of the tail box bracket was solved, enabling quick installation and convenient storage, and improving ease of use and structural stability.

CN224171099UActive Publication Date: 2026-04-28SUZHOU LIANFAN MOTORCYCLE PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU LIANFAN MOTORCYCLE PARTS CO LTD
Filing Date
2025-06-19
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In existing motorcycle subframe rear structures, the tail box bracket and the rear seat support frame are usually detachably connected, which makes it inconvenient to carry the tail box bracket after disassembly and not convenient to install and use.

Method used

A motorcycle subframe rear structure was designed, which adopts two symmetrically distributed rear side beams and support plates. The rear box support rod is supported by a support mechanism. The rear box support rod can be folded and stored in the slot. Combined with a slider and linkage mechanism, it can be quickly installed and stored.

Benefits of technology

It enables quick assembly and convenient storage of the tailgate bracket and rear seat support frame, improving ease of use and enhancing structural stability and strength.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a motorcycle subframe tail structure, which belongs to the technical field of motorcycles, and comprises two tail side beams, the two tail side beams are symmetrically distributed, a support plate is fixedly connected between the two tail side beams, a backseat connecting hole group is arranged on the support plate, the rear ends of the two tail side beams are fixedly connected with limit blocks, and the limit blocks are fixedly connected with the rear ends of the two tail side beams. An inserting opening is formed between each tail side beam and the corresponding limiting block, tail box supporting rods are slidably inserted into the two inserting openings, and rotating shafts are fixedly connected to the circumferential surfaces of the two tail box supporting rods; according to the tail structure of the auxiliary frame of the motorcycle, the rear seat supporting frame is composed of the two tail side beams and the supporting plate to support a rear seat of the motorcycle, the two tail box supporting rods and the two connecting plates form the tail box support to be used for installing a tail box of the motorcycle, and the tail box support is matched with the supporting mechanism and can be pulled out and assembled at any time in the rear seat supporting frame. When not in use, the device can be quickly stored, is convenient to carry, and is more convenient to install and use.
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Description

Technical Field

[0001] This utility model relates to the field of motorcycle technology, and more specifically, to a rear subframe structure for a motorcycle. Background Technology

[0002] The motorcycle subframe is part of the frame. In two-wheeled motorcycles, it usually includes a left subframe and a right subframe connected to the main frame. It plays a specific supporting and connecting role and assists the main frame in supporting the body parts.

[0003] Currently, the front structure of a motorcycle subframe is used to connect the main frame and support the main seat, while the rear structure is used to support the motorcycle rear seat and install the tail box. However, in most existing motorcycle subframe rear structures, the tail box bracket and the rear seat support bracket are usually connected in a detachable manner. The installation of the rear seat support bracket and the tail box bracket is based on actual usage needs. After the tail box bracket is disassembled, it is inconvenient to carry and the installation and use are not convenient. Therefore, this utility model proposes a motorcycle subframe rear structure. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a motorcycle subframe rear structure, aiming to solve the problem that in most existing motorcycle subframe rear structures, the tail box bracket and the rear seat support bracket are usually connected in a detachable manner, and the installation of the rear seat support bracket and tail box bracket is based on actual usage needs. However, the tail box bracket is inconvenient to carry after disassembly, and the installation and use are not convenient enough.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A motorcycle subframe rear structure includes two rear side beams symmetrically distributed. A support plate is fixedly connected between the two rear side beams. The support plate has a set of rear seat connection holes. A limit block is fixedly connected to the rear end of each of the two rear side beams. An insertion port is provided between each rear side beam and a limit block. A tail box support rod is slidably inserted into each of the two insertion ports. A rotating shaft is fixedly connected to the circumferential surface of each of the two tail box support rods, and the two rotating shafts are located in the two insertion ports respectively. A connecting plate is fixedly connected to the cylindrical surface of each of the two rotating shafts, and the two connecting plates correspond to each other. A set of fixing holes is provided on each of the two connecting plates, and the two sets of fixing holes correspond to each other. A receiving opening is provided on one side end of each rear side beam and a limit block, and the two receiving openings are respectively connected to the two insertion ports and matched with the two connecting plates. A support mechanism is provided between the two rear side beams and the two tail box support rods, and the support mechanism is used to support the two tail box support rods.

[0009] As a preferred embodiment of this utility model, the support mechanism includes two sliders, two connecting rods, and two sets of fixing blocks. The two sliders are slidably connected to one side of the two tail beams, and one end of each slider is located in one of the two slots. The two connecting rods are movably hinged between the two sliders and the two tail box support rods through hinge pins. The two sets of fixing blocks are fixedly connected to the bottom of the two tail beams. Each set of fixing blocks consists of two blocks, and each set of two fixing blocks corresponds to one slider.

[0010] As a preferred embodiment of this utility model, one end of each of the two tail beams is fixedly connected to an anti-detachment guide rail, and the two sliders are slidably connected to the two anti-detachment guide rails respectively.

[0011] As a preferred embodiment of this utility model, each of the two limiting blocks is fixedly connected with a limiting post, and the two limiting posts are respectively located on the lower side of the two tail box support rods.

[0012] As a preferred embodiment of this utility model, one end of each of the two tail box support rods is fixedly connected to an anti-collision block, and both anti-collision blocks are made of rubber.

[0013] As a preferred embodiment of this utility model, both connecting plates are provided with tail box connection holes.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this solution, two rear side beams and support plates are used to connect the motorcycle rear seat. Two tail box support rods and two connecting plates are located at the tail of the two rear side beams to form a tail box bracket for installing the motorcycle tail box. The support mechanism supports the two tail box support rods to improve strength. When the motorcycle does not need to use the tail box, the support mechanism folds and fixes the two tail box support rods by retracting the two tail box support rods into the two sockets. The two tail box support rods and two connecting plates are then stored between the two rear side beams, located under the motorcycle rear seat. The rear structure of the motorcycle subframe consists of two rear side beams and support plates forming a rear seat support frame to support the motorcycle rear seat. Two tail box support rods and two connecting plates form a tail box bracket for installing the motorcycle tail box. The tail box bracket, in conjunction with the support mechanism, can be pulled out and assembled at any time within the rear seat support frame. When not in use, it can be quickly stored, making it convenient to carry and install. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a perspective view of the present utility model;

[0019] Figure 3 This is a structural diagram of the present invention in its usage state;

[0020] Figure 4 In this utility model Figure 3 Exploded view.

[0021] Explanation of the labels in the diagram:

[0022] 1. Rear side beam; 2. Support plate; 3. Rear seat connection hole assembly; 4. Limiting block; 5. Insert; 6. Tail box support rod; 7. Rotating shaft; 8. Connecting plate; 9. Fixing hole assembly; 10. Storage opening; 111. Sliding block; 112. Connecting rod; 113. Fixing block; 12. Anti-detachment guide rail; 13. Limiting post; 14. Anti-collision block; 15. Tail box connection hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-4 A motorcycle subframe rear structure includes two rear side beams 1, symmetrically distributed, with a support plate 2 fixedly connected between them. The support plate 2 has a rear seat connection hole group 3. Limit blocks 4 are fixedly connected to the rear ends of both rear side beams 1. An insertion port 5 is provided between each rear side beam 1 and a limit block 4. A tail box support rod 6 is slidably inserted into each of the two insertion ports 5. Rotating shafts 7 are fixedly connected to the circumferential surfaces of both tail box support rods 6, with the two rotating shafts 7 located at the two insertion ports respectively. Inside 5, the cylindrical surfaces of the two rotating shafts 7 are fixedly connected to connecting plates 8, and the two connecting plates 8 correspond to each other. The two connecting plates 8 are provided with fixing hole groups 9, and the two fixing hole groups 9 correspond to each other. Each tail side beam 1 and one side end of a limiting block 4 are provided with a storage port 10, and the two storage ports 10 are respectively connected to the two insertion ports 5 and matched with the two connecting plates 8. A support mechanism is provided between the two tail side beams 1 and the two tail box support rods 6. The support mechanism is used to support the two tail box support rods 6.

[0028] In this embodiment, two rear side beams 1 are located on both sides of the rear of the motorcycle subframe and are connected by support plates 2. The rear seat connection hole group 3 on the support plate 2 is used with bolts to support and fix the motorcycle rear seat. When the motorcycle needs to install a tail box, by pulling the two tail box support rods 6, the two tail box support rods 6 respectively drive the two rotating shafts 7 to slide in the two sockets 5. The two rotating shafts 7 slide into the limiting blocks 4 in the two sockets 5. The two tail box support rods 6 rotate downward in the two limiting blocks 4 through the two rotating shafts 7 respectively, and are kept in a state parallel to the ground. The two connecting plates 8 are in contact with each other, so that the two fixing hole groups 9 correspond. The two fixing hole groups 9 are used with bolts to fix the two connecting plates 8. Due to the rotation of the two tail box support rods 6 in the two limiting blocks 4, Since the two connecting plates 8 are not coaxial, they will prevent the two tailgate support rods 6 from rotating after being fixed. Finally, a support mechanism is used to further fix and support the two tailgate support rods 6, so that the two connecting plates 8 can be stably installed in the tailgate. When the tailgate is removed and the tailgate bracket is not used, the bolts between the two connecting plates 8 are removed to cancel the fixation between the two connecting plates 8, allowing the two tailgate support rods 6 to rotate. The two tailgate support rods 6 are rotated upward to a certain angle and inserted into the two sockets 5 respectively. The two connecting plates 8 are stored between the two rear side beams 1 through the two storage openings 10 respectively. Finally, the support mechanism is used to fix the two tailgate support rods 6, so that the tailgate bracket composed of the two tailgate support rods 6 and the two connecting plates 8 is fixedly stored under the rear seat for easy removal and use later.

[0029] Specifically, the support mechanism includes two sliders 111, two connecting rods 112, and two sets of fixing blocks 113. The two sliders 111 are slidably connected to one side of the two tail beams 1, and one end of the two sliders 111 is located in the two sockets 5. The two connecting rods 112 are movably hinged between the two sliders 111 and the two tail box support rods 6 through hinge pins. The two sets of fixing blocks 113 are fixedly connected to the bottom of the two tail beams 1. Each set of fixing blocks 113 consists of two blocks, and each set of two fixing blocks 113 corresponds to one slider 111.

[0030] In this embodiment, during the process of pulling the two tail box support rods 6 out of the two sockets 5, the two tail box support rods 6 respectively drive the two sliders 111 to slide on the two rear side beams 1 via the two connecting rods 112. When the two tail box support rods 6 are installed parallel to the ground, the two sliders 111 correspond to the two sets of two fixing blocks 113 located on the rear side, and the two sliders 111 and the two fixing blocks 113 are fixed by bolts, so that the two connecting rods 112 stably support the two tail box support rods 6 respectively, ensuring the stability of the two tail box support rods 6 and the two connecting plates 8 supporting the tail box. When the two tail box support rods 6 need to be retracted into the two sockets 5, the two sliders 111 are first removed from the two sockets 5. The two fixed blocks 113 on the rear side are fixedly connected. The two tail box support rods 6 are rotated upward so that the two tail box support rods 6 correspond to the two sockets 5 respectively. The two sliders 111 slide on both sides of the two tail side beams 1 respectively. The two connecting rods 112 are parallel to the two tail box support rods 6 respectively. Then the two tail box support rods 6 are inserted into the two sockets 5 respectively. The two tail box support rods 6 push the two connecting rods 112 respectively to drive the two sliders 111 to slide. The two sliders 111 move to correspond to the two sets of fixed blocks 113 on the front side. The two sliders 111 and the two fixed blocks 113 on the front side are fixed by bolts so that the two tail box support rods 6 are stably stored in the two sockets 5.

[0031] Specifically, one end of each of the two tail beams 1 is fixedly connected to an anti-detachment guide rail 12, and the two sliders 111 are slidably connected to the two anti-detachment guide rails 12 respectively.

[0032] In this embodiment, the two anti-detachment guide rails 12 facilitate the sliding of the two sliders 111, ensuring that the movement of the two sliders 111 remains stable.

[0033] Specifically, each of the two limiting blocks 4 is fixedly connected to a limiting post 13, and the two limiting posts 13 are located on the lower side of the two tail box support rods 6 respectively.

[0034] In this embodiment, when the two tail box support rods 6 rotate downwards and become parallel to the ground within the two limiting blocks 4, the two limiting posts 13 will respectively restrict the two tail box support rods 6 to prevent the two tail box support rods 6 from rotating excessively.

[0035] Specifically, one end of each of the two tail box support rods 6 is fixedly connected to a crash block 14, and both crash blocks 14 are made of rubber.

[0036] In this embodiment, the two anti-collision blocks 14 are located at the rear end of the motorcycle frame to prevent the human body from being bumped or hit.

[0037] Specifically, both connecting plates 8 have tail box connection holes 15.

[0038] In this embodiment, the two connecting plates 8 are connected to the tail box via two tail box connecting holes 15 and bolts, which facilitates the fixing of the tail box.

[0039] Working principle: When a motorcycle needs to have a tail box installed, pulling the two tail box support rods 6 causes the two rotating shafts 7 to slide within the two insertion slots 5. Simultaneously, the two tail box support rods 6, via two connecting rods 112, pull the two sliders 111 to slide on both sides of the two rear side beams 1. The two rotating shafts 7 slide to their rearmost position within the two insertion slots 5, thus entering the limiting block 4. The two tail box support rods 6 rotate downwards within the two limiting blocks 4 via the two rotating shafts 7, maintaining a parallel state to the ground. The two connecting plates 8 contact each other, aligning the two fixing hole groups 9. The two fixing hole groups 9, with bolts, fix the two connecting plates 8. At this time, the two sliders 111 correspond to the two fixing blocks 113 located at the rear, and the two sliders 111 are fixed to the two fixing blocks 113 with bolts. The two connecting rods 112 ensure stable installation of the tail box by the two tail box support rods 6 and the two connecting plates 8. When the tail box is removed, the tail box is not... When using the tailgate bracket, remove the bolts between the two connecting plates 8 to cancel the fixation between them. At the same time, remove the bolts between the two sliders 111 and the two rear fixing blocks 113. Then, rotate the two tailgate support rods 6 upwards so that they correspond to the two sockets 5 respectively. The two sliders 111 slide on both sides of the two rear side beams 1 respectively. The two connecting rods 112 are parallel to the two tailgate support rods 6 respectively. Then, insert the two tailgate support rods 6 into the two sockets 5 respectively. The two tailgate support rods 6 push the two connecting rods 112 to drive the two sliders 111 to slide. The two sliders 111 move to correspond to the two sets of two fixing blocks 113 located on the front side. Fix the two sliders 111 and the two front fixing blocks 113 with bolts so that the two tailgate support rods 6 are stably stored in the two sockets 5. The two connecting plates 8 are stored between the two rear side beams 1 through the two storage openings 10 respectively, which is convenient for subsequent removal and use.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A motorcycle subframe rear structure, comprising two rear side beams (1), characterized in that: The two tail side beams (1) are symmetrically distributed, and a support plate (2) is fixedly connected between the two tail side beams (1). The support plate (2) is provided with a rear seat connection hole group (3). The rear ends of the two tail side beams (1) are fixedly connected with limit blocks (4). Each tail side beam (1) and a limit block (4) are provided with an insertion port (5). A tail box support rod (6) is slidably inserted into each of the two insertion ports (5). A rotating shaft (7) is fixedly connected to the circumferential surface of each of the two tail box support rods (6), and the two rotating shafts (7) are respectively located in the two insertion ports (5). A connecting plate (8) is fixedly connected to the cylindrical surface of the shaft (7), and the two connecting plates (8) correspond to each other. A fixing hole group (9) is opened on the two connecting plates (8), and the two fixing hole groups (9) correspond to each other. A storage port (10) is opened on one side end of each tail side beam (1) and a limiting block (4), and the two storage ports (10) are respectively connected to the two insertion ports (5) and matched with the two connecting plates (8). A support mechanism is provided between the two tail side beams (1) and the two tail box support rods (6), and the support mechanism is used to support the two tail box support rods (6).

2. The motorcycle subframe rear structure according to claim 1, characterized in that: The support mechanism includes two sliders (111), two connecting rods (112), and two sets of fixing blocks (113). The two sliders (111) are slidably connected to one side of the two tail beams (1), and one end of the two sliders (111) is located in the two sockets (5). The two connecting rods (112) are movably hinged between the two sliders (111) and the two tail box support rods (6) through hinge shafts. The two sets of fixing blocks (113) are fixedly connected to the bottom of the two tail beams (1). Each set of fixing blocks (113) consists of two blocks, and each set of two fixing blocks (113) corresponds to one slider (111).

3. The motorcycle subframe rear structure according to claim 2, characterized in that: One end of each of the two tail beams (1) is fixedly connected to an anti-detachment guide rail (12), and the two sliders (111) are slidably connected to the two anti-detachment guide rails (12).

4. The motorcycle subframe rear structure according to claim 3, characterized in that: Each of the two limiting blocks (4) is fixedly connected to a limiting post (13), and the two limiting posts (13) are located on the lower side of the two tail box support rods (6).

5. The motorcycle subframe rear structure according to claim 4, characterized in that: One end of each of the two tail box support rods (6) is fixedly connected to a crash block (14), and both crash blocks (14) are made of rubber.

6. The motorcycle subframe rear structure according to claim 5, characterized in that: Both of the connecting plates (8) are provided with tail box connection holes (15).