Dual purpose cargo carrier for a bicycle
By designing a dual-purpose bicycle cargo frame, which uses screw connections and Velcro fastening, it enables quick switching between carrying cargo and carrying passengers. This solves the problems of existing cargo frames having limited functionality and being inconvenient to assemble and disassemble, improving the practicality and comfort of bicycles, and reducing maintenance and transportation costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SMILEY TECH CO LTD
- Filing Date
- 2025-08-16
- Publication Date
- 2026-06-12
AI Technical Summary
Existing bicycle cargo frames have a single function, which cannot meet the needs of carrying both goods and people. Furthermore, they are complex in structure, inconvenient to assemble and disassemble, and the connection method is not convenient for maintenance and transportation.
Design a dual-purpose bicycle cargo frame, which uses front and rear frames connected by bottom tubes and screws, equipped with padding and reinforcing tubes, and uses Velcro to fix the cover cloth. The side support tubes cooperate with U-shaped strips to realize quick conversion between cargo and passenger carrying functions.
It realizes the dual function of the cargo frame, improves the practicality and comfort of use, simplifies the maintenance and transportation process, and reduces costs.
Smart Images

Figure CN224349044U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bicycle technology, and in particular relates to a dual-purpose cargo frame for bicycles. Background Technology
[0002] With the diversification of user needs, the functional expansion of bicycles has become an important direction for industry development. Among them, the tail rack, as a common bicycle accessory, undertakes functions such as carrying goods and passengers, and its design rationality directly affects the user experience and practicality of the bicycle. Whether carrying passengers or goods, existing tail racks cannot ensure the stability and safety of people or goods during bicycle riding. Therefore, a cargo frame is usually installed on the tail rack.
[0003] Currently, bicycle cargo frames on the market are mainly divided into two categories: dedicated cargo frames and simple passenger frames. Dedicated cargo frames usually use a metal frame structure and have a strong load-bearing capacity, but their design focuses on placing goods and cannot be flexibly converted into passenger mode. Simple passenger frames are mainly intended to provide riding space and have a relatively simple structure.
[0004] Therefore, existing cargo frames have certain limitations in practical use: First, their functions are relatively limited. Cargo frames cannot simultaneously ensure passenger comfort, and passenger frames cannot meet the practicality of carrying goods. Users need to replace cargo frames or equip them with additional accessories according to different scenarios, which is cumbersome and increases usage costs. Second, although some multi-functional cargo frames attempt to combine cargo and passenger carrying, their structural design is complex, disassembly and maintenance are inconvenient, and the operation steps when switching functions are cumbersome, making it difficult to quickly adapt to different usage needs. In addition, the existing cargo frames are mostly connected by welding, which not only results in a large overall weight but also makes it inconvenient for later maintenance, replacement, transportation, and storage, increasing packaging and transportation costs.
[0005] Therefore, in view of the above situation, there is an urgent need to develop a dual-purpose cargo frame for bicycles to overcome the shortcomings in current practical applications. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model embodiment is to provide a dual-purpose cargo frame for bicycles to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A dual-purpose cargo frame for a bicycle includes front and rear frames distributed at the front and rear ends of the bicycle tail rack. The bottom of the front and rear frames are connected as a whole by a bottom tube, and the bottom tube is connected to the front and rear frames as a whole by screws. A soft pad is installed on the bottom tube.
[0009] A reinforcing tube is fixed in the middle of the front and rear frames, and U-shaped strips are distributed on the outer walls of the left and right sides of the front and rear frames. Side support tubes are symmetrically distributed on the left and right sides of the front and rear frames, and the side support tubes are fixed to the front and rear frames with screws.
[0010] When the cargo frame is loaded, a baffle is placed in the space enclosed by the side support tubes and the front and rear frames. The baffle is connected to the side support tubes and the U-shaped strips by Velcro.
[0011] As a further technical solution of this utility model, the front and rear frames adopt a V-shaped tubular structure.
[0012] As a further technical solution of this utility model, the side support tube adopts a U-shaped tubular structure.
[0013] As a further technical solution of this utility model, the outer diameter of the side support tube is smaller than the inner diameter of the front and rear frames.
[0014] As a further technical solution of this utility model, a soft sleeve is installed on the outer wall of the side support tube.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This cargo frame is designed for both passenger and cargo use, greatly enhancing the bicycle's practicality. When cargo is needed, an additional flap is attached to the side support tubes and U-shaped strips via Velcro. This installation method is simple and quick, allowing the cargo frame to be converted into a cargo-carrying configuration in an instant, and the flap effectively prevents goods from falling off. When the passenger is in use, the soft padding on the bottom tube provides comfortable support for the rider, improving riding comfort and meeting the needs of different scenarios.
[0017] The front and rear frames are connected as a whole by a bottom tube and fixed with screws, which not only ensures the strength of the connection, but also facilitates disassembly and maintenance in the future. The reinforcement tubes further enhance the structural strength of the front and rear frames, which can effectively cope with the pressure and impact generated when carrying goods or passengers, and improve the overall load-bearing capacity and service life of the cargo frame.
[0018] The screw connection method ensures a tight and reliable connection between the components, while also facilitating later maintenance and replacement, reducing maintenance costs. It also simplifies the cargo frame structure, making it easy to disassemble into individual parts for packaging and transportation, saving packaging materials, reducing packaging costs, and allowing for more rational use of space during transportation, improving transportation efficiency and reducing transportation costs.
[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0020] Figure 1 This is a first-view structural schematic diagram of the dual-purpose cargo frame for a bicycle provided in an embodiment of the present utility model.
[0021] Figure 2 This is a structural schematic diagram of the dual-purpose cargo frame of a bicycle provided in an embodiment of the present utility model from a second perspective.
[0022] Figure 3 This is a front view of the structure of the dual-purpose cargo frame for bicycles provided in an embodiment of the present utility model.
[0023] Attached reference numerals: 1-front and rear frames, 2-reinforcing tube, 3-side support tube, 4-soft sleeve, 5-U-shaped strip, 6-bottom tube, 7-soft pad. Detailed Implementation
[0024] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0026] like Figures 1 to 3 As shown, a dual-purpose cargo frame for bicycles provided as an embodiment of the present utility model includes front and rear frames 1 distributed at the front and rear ends of the bicycle tail rack. The bottom of the front and rear frames 1 is connected as a whole by a bottom tube 6, and the bottom tube 6 is connected to the front and rear frames 1 as a whole by screws. A soft pad 7 is installed on the bottom tube 6.
[0027] A reinforcing tube 2 is fixed in the middle of the front and rear frames 1. The reinforcing tube 2 can increase the structural strength of the front and rear frames 1. U-shaped strips 5 are distributed on the outer walls of the left and right sides of the front and rear frames 1. Side support tubes 3 are symmetrically distributed on the left and right sides of the front and rear frames 1. The side support tubes 3 are fixed to the front and rear frames 1 with screws. When the cargo frame needs to carry cargo, a baffle is placed in the space enclosed by the side support tubes 3 and the front and rear frames 1. The baffle is connected to the side support tubes 3 and the U-shaped strips 5 respectively by Velcro.
[0028] This cargo frame has dual functions of carrying passengers and cargo, greatly improving the practicality of the bicycle. When carrying cargo, the additional protective cloth is attached to the side support tube 3 and U-shaped strip 5 via Velcro. This installation method is simple and quick, and can quickly convert the cargo frame into a cargo-carrying state. The protective cloth can also effectively prevent the cargo from falling off. When carrying passengers, the soft pad 7 on the bottom tube 6 can provide comfortable support for the rider, improving the riding comfort and meeting the needs of use in different scenarios.
[0029] The front and rear frames 1 are connected as a whole by the bottom tube 6 and fixed with screws, which not only ensures the firmness of the connection, but also facilitates the disassembly and maintenance in the future. The setting of the reinforcing tube 2 further enhances the structural strength of the front and rear frames 1, which can effectively cope with the pressure and impact generated when carrying goods or passengers, and improve the overall load-bearing capacity and service life of the cargo frame.
[0030] The side support tube 3, in conjunction with the U-shaped strip 5, not only forms a stable lateral support structure, thereby improving the lateral support stability of the baffle and the goods inside, but also provides a reliable fixing point for the installation of the baffle, ensuring that the baffle will not loosen or fall off during use, further guaranteeing safety when carrying goods.
[0031] The screw connection method ensures a tight and reliable connection between the components, while also facilitating later maintenance and replacement, reducing maintenance costs. It also simplifies the cargo frame structure, making it easy to disassemble into individual parts for packaging and transportation, saving packaging materials, reducing packaging costs, and allowing for more rational use of space during transportation, improving transportation efficiency and reducing transportation costs.
[0032] like Figures 1 to 3 As shown, in a preferred embodiment of the present invention, the front and rear frames 1 preferably adopt a V-shaped tubular structure; the V-shaped structure itself has good mechanical properties, which can distribute the force more evenly, further enhancing the overall structural stability and load-bearing capacity of the front and rear frames 1, and can better cope with the pressure brought by goods or people of different weights when riding.
[0033] like Figures 1 to 3 As shown, in a preferred embodiment of the present invention, the side support tube 3 preferably adopts a U-shaped tubular structure; compared with other shapes, the U-shaped structure can provide stronger bending and deformation resistance with the same amount of material, making the side support tube 3 more stable and reliable during the support process, less prone to damage due to external forces, and extending the service life of the side support tube 3.
[0034] like Figures 1 to 3 As shown, in a preferred embodiment of this utility model, the outer diameter of the side support tube 3 is smaller than the inner diameter of the front and rear frames 1. This makes it easier for the side support tube 3 to be inserted into the front and rear frames 1, and facilitates the screws to quickly lock the two together. This simplifies the installation process of the side support tube 3 and the front and rear frames 1, improves assembly efficiency, and makes it more convenient and labor-saving for both production assembly and user self-disassembly and maintenance, reducing the difficulty of operation.
[0035] like Figures 1 to 3As shown in the preferred embodiment of this utility model, a soft sleeve 4 is installed on the outer wall of the side support tube 3. The soft sleeve 4 facilitates the grip of the user sitting on the soft cushion 7, increasing the stability of the bicycle during movement. Furthermore, the design of the soft sleeve 4 prevents direct contact between the side support tube 3 and the user, thus cushioning the impact between the user and the side support tube 3 and further improving the user's riding comfort. This design, based on user experience, makes the riding function more humane and enhances the user's sense of security and comfort during riding.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dual-purpose cargo frame for bicycles, characterized in that, It includes front and rear frames distributed at the front and rear ends of the bicycle tail rack. The bottom of the front and rear frames are connected as a whole by a bottom tube, and the bottom tube is connected to the front and rear frames as a whole by screws. A soft pad is installed on the bottom tube. A reinforcing tube is fixed in the middle of the front and rear frames, and U-shaped strips are distributed on the outer walls of the left and right sides of the front and rear frames. Side support tubes are symmetrically distributed on the left and right sides of the front and rear frames, and the side support tubes are fixed to the front and rear frames with screws. When the cargo frame is loaded, a baffle is placed in the space enclosed by the side support tubes and the front and rear frames. The baffle is connected to the side support tubes and the U-shaped strips by Velcro.
2. The dual-purpose cargo frame for bicycles according to claim 1, characterized in that, The front and rear frames adopt a V-shaped tubular structure.
3. The dual-purpose cargo frame for bicycles according to claim 1, characterized in that, The side support tube adopts a U-shaped tubular structure.
4. The dual-purpose cargo frame for bicycles according to claim 3, characterized in that, The outer diameter of the side support tube is smaller than the inner diameter of the front and rear frames.
5. The dual-purpose cargo frame for bicycles according to claim 4, characterized in that, A soft sleeve is installed on the outer wall of the side support tube.