Separable high-strength frame
By designing a detachable high-strength frame, the problem of easily damaged rear racks on bicycles has been solved, enabling convenient disassembly and replacement of the rear racks, thus improving the maintenance efficiency and service life of the frame.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU CASPURI BICYCLE CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-05-15
AI Technical Summary
Bicycle rear racks are prone to damage or wear, and most existing rear racks are molded in one piece, making repair or replacement inconvenient.
Design a detachable high-strength frame, with the front frame and rear frame connected by bolts and fixing screws. The rear frame is easy to disassemble through a damper and sliding groove structure, allowing for individual replacement or repair of the rear frame.
It enables quick disassembly and replacement of the rear rack, improving frame maintenance efficiency and extending frame lifespan.
Smart Images

Figure CN224241180U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle frames, and in particular to a detachable high-strength vehicle frame. Background Technology
[0002] All-terrain vehicles (ATVs), also known as ATVs, are vehicles suitable for all terrains. ATVs are characterized by their simple structure, practicality, and excellent off-road performance. Therefore, ATVs are primarily found on beaches or valley roads. On soft sand, the wide tires of ATVs increase the contact area with the ground, generating greater friction. Combined with unique tire treads, this prevents the tires from spinning and slipping, further enhancing the driving experience. They can easily overcome obstacles in valleys, riverbeds, forest trails, streams, and even the harsher deserts. Therefore, to operate in harsh conditions such as beaches, riverbeds, forest trails, streams, or deserts, ATVs must possess excellent structural strength, stability, and lightweight design. The frame, as the main structure of the vehicle, has structural strength and stability that are decisive factors in determining the vehicle's performance.
[0003] A search revealed a mountain bike frame with patent publication number CN206552168U, comprising a front triangle, a center beam, and a rear triangle. The front and rear triangles are connected as one unit via the center beam. A seat gas spring is mounted on the center beam, with an adjustment handle installed on one side of the movable end of the seat gas spring. A seat is mounted on the top of the movable end of the seat gas spring, and a handlebar gas spring is located at the front end of the front triangle. However, the above structure has the following drawbacks: the rear rack of the bicycle is prone to damage or wear, requiring disassembly for repair or replacement. Most rear racks fixed to the bicycle are integrally molded. Therefore, a detachable high-strength frame is proposed. Utility Model Content
[0004] Therefore, it is necessary to address the technical problem of bicycle rear racks being prone to damage or wear, requiring disassembly for repair or replacement. This necessitates providing a detachable high-strength frame, comprising a front frame and a rear frame. The front frame has mounting blocks on its periphery, with threaded holes symmetrically formed on one side of each mounting block. Bolts are threaded into these holes. The rear frame includes a first side frame and a second side frame. The first side frame has two sets of connecting rods symmetrically arranged on one side, with fixing holes on one side of each connecting rod. The first and second side frames have identical structures. A reinforcing rod is provided between the first and second side frames. Fixing holes are symmetrically formed on the upper surfaces of the first and second side frames. The screw hole is internally threaded with a fixing screw. A back hanger is provided on the upper surface of the back frame. The upper surface of the back hanger has symmetrically opened mounting holes. A mounting base is provided on one side of the back hanger. A sliding groove is symmetrically opened on one side of the mounting base. A damper is provided on one side of the mounting base between the two sets of sliding grooves. A sliding rod is provided in the sliding groove. A sliding seat is inserted through the periphery of the sliding rod. A compression spring and a tension spring are respectively sleeved on the periphery of both ends of the sliding rod. A connecting rod is hinged to one side of the sliding seat. A collision protection block is hinged to one end of the connecting rod. A sleeve is symmetrically provided on one side of the mounting base. A hollow tube is slidably connected inside the sleeve. A spring is provided on one side of the inner wall of the hollow tube.
[0005] In one embodiment, the free end of the spring is fixedly connected to one side of the inner wall of the sleeve, one side of the hollow tube is fixedly connected to one side of the anti-collision block, one end of the damper is fixedly connected to one side of the anti-collision block, one end of the compression spring is fixedly connected to one side of the inner wall of the slide groove, the other end of the compression spring is fixedly connected to one side of the slide block, one end of the tension spring is fixedly connected to one side of the slide block, and the other end of the tension spring is fixedly connected to one side of the inner wall of the slide groove.
[0006] In one embodiment, the bolt shape and size are adapted to the fixing hole, the fixing screw shape and size are adapted to the mounting hole, a nut is fitted on one end of both the bolt and the fixing screw, one end of the bolt passes through the fixing hole and the threaded hole and is threadedly connected to the nut, one end of the fixing screw passes through the mounting hole and is threadedly connected to the nut, the slide block slides with the slide rod, and the mounting base is fixed to one side of the back hanger.
[0007] During operation, the aforementioned detachable high-strength frame allows for the removal of the rear rack from the upper surface of the rear frame by unscrewing the fixing screws from the fixing screw holes and mounting holes using tools. This enables the replacement or repair of the rear rack. Simultaneously, the bolts can be unscrewed from the threaded holes and fixing holes using tools to disassemble the front and rear frames. This allows for the individual replacement or repair of any damaged part of the front or rear frame. Attached Figure Description
[0008] Figure 1This is a structural schematic diagram of a separable high-strength vehicle frame in one embodiment;
[0009] Figure 2 This is a front view of a separable high-strength frame in one embodiment;
[0010] Figure 3 In one embodiment Figure 2 Cross-sectional view of section AA;
[0011] Figure 4 This is an exploded view of a separable high-strength frame in one embodiment. Detailed Implementation
[0012] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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.
[0013] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0014] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0015] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0016] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0017] Please refer to the following: Figures 1 to 4 This utility model provides a separable high-strength vehicle frame, including: a front frame 1 and a rear frame 2. The front frame 1 has mounting blocks 10 on its periphery, and threaded holes 101 are symmetrically formed on one side of each mounting block 10. Bolts 102 are threaded into the threaded holes 101. The rear frame 2 includes a first side frame 21 and a second side frame 22. Two sets of connecting rods 210 are symmetrically formed on one side of the first side frame 21, and fixing holes 211 are formed on one side of each connecting rod 210. The first side frame 21 and the second side frame 22 have the same structure. A reinforcing rod 20 is provided between the first frame 21 and the second side frame 22. The upper surfaces of the first side frame 21 and the second side frame 22 are symmetrically provided with fixing screw holes 23. Fixing screws 24 are connected to the internal threads of the fixing screw holes 23. The upper surface of the rear frame 2 is provided with a rear coat rack 3. The upper surface of the rear coat rack 3 is symmetrically provided with mounting holes 30. One side of the rear coat rack 3 is provided with a mounting base 31. One side of the mounting base 31 is symmetrically provided with sliding grooves 310. A damper 317 is provided between the two sets of sliding grooves 310 on one side of the mounting base 31.
[0018] Furthermore, a slide rod 311 is provided inside the slide groove 310, and a slide seat 312 is inserted through the periphery of the slide rod 311. A compression spring 313 and a tension spring 314 are respectively sleeved on the periphery of both ends of the slide rod 311. A connecting rod 315 is hinged to one side of the slide seat 312, and an anti-collision block 316 is hinged to one end of the connecting rod 315. A sleeve 32 is symmetrically provided on one side of the mounting base 31, and a hollow tube 33 is slidably connected inside the sleeve 32. A spring 34 is provided on one side of the inner wall of the hollow tube 33.
[0019] Furthermore, the free end of the spring 34 is fixedly connected to one side of the inner wall of the sleeve 32, one side of the hollow tube 33 is fixedly connected to one side of the anti-collision block 316, one end of the damper 317 is fixedly connected to one side of the anti-collision block 316, one end of the compression spring 313 is fixedly connected to one side of the inner wall of the slide groove 310, and the other end of the compression spring 313 is fixedly connected to one side of the slide block 312.
[0020] Furthermore, one end of the tension spring 314 is fixedly connected to one side of the slide block 312, and the other end of the tension spring 314 is fixedly connected to one side of the inner wall of the slide groove 310. The shape and size of the bolt 102 are adapted to the fixing hole 211, and the shape and size of the fixing screw 24 are adapted to the mounting hole 30.
[0021] Furthermore, a nut is fitted on one end of both the bolt 102 and the fixing screw 24. One end of the bolt 102 passes through the fixing hole 211 and the threaded hole 101 and is threadedly connected to the nut. One end of the fixing screw 24 passes through the mounting hole 30 and is threadedly connected to the nut. The slide block 312 slides with the slide rod 311. The mounting base 31 is fixed to one side of the back hanger 3.
[0022] It should be noted that during operation, the aforementioned detachable high-strength frame allows the rear rack 3 to be removed from the upper surface of the rear frame 2 by unscrewing the fixing screw 24 from the fixing screw hole 23 and the mounting hole 30 using a tool. This enables the replacement or repair of the rear rack 3 of the bicycle. At the same time, the bolt 102 can be unscrewed from the threaded hole 101 and the fixing hole 211 using a tool, thereby completing the disassembly of the front frame 1 and the rear frame 2. This allows for the individual replacement or repair of either the front frame 1 or the rear frame 2 if one part is damaged.
[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A detachable high-strength vehicle frame, characterized in that, include: The front frame and rear frame are provided. The front frame has mounting blocks on its circumferential side. Threaded holes are symmetrically opened on one side of each mounting block, and bolts are threaded into these holes. The rear frame includes a first side frame and a second side frame. Two sets of connecting rods are symmetrically arranged on one side of the first side frame. Fixing holes are opened on one side of each connecting rod. The first and second side frames have the same structure. A reinforcing rod is provided between the first and second side frames. Fixing screw holes are symmetrically opened on the upper surfaces of the first and second side frames, and fixing screws are threaded into these holes. A rear coat rack is provided on the upper surface of the rear frame. Mounting holes are symmetrically opened on the upper surface of the rear coat rack. A mounting seat is provided on one side of the rear coat rack. Sliding grooves are symmetrically opened on one side of the mounting seat. A damper is provided on one side of the mounting seat between the two sets of sliding grooves.
2. The detachable high-strength frame according to claim 1, characterized in that, A slide rod is provided in the slide groove, and a slide seat is inserted through the periphery of the slide rod. A compression spring and a tension spring are respectively sleeved on the periphery of both ends of the slide rod.
3. The detachable high-strength frame according to claim 2, characterized in that, A connecting rod is hinged to one side of the slide block, and an anti-collision block is hinged to one end of the connecting rod. A sleeve is symmetrically arranged on one side of the mounting base, and a hollow tube is slidably connected inside the sleeve. A spring is arranged on one side of the inner wall of the hollow tube.
4. The detachable high-strength frame according to claim 3, characterized in that, The free end of the spring is fixedly connected to one side of the inner wall of the sleeve, one side of the hollow tube is fixedly connected to one side of the anti-collision block, and one end of the damper is fixedly connected to one side of the anti-collision block.
5. The detachable high-strength frame according to claim 4, characterized in that, One end of the compression spring is fixedly connected to one side of the inner wall of the slide groove, and the other end of the compression spring is fixedly connected to one side of the slide block.
6. The detachable high-strength frame according to claim 5, characterized in that, One end of the tension spring is fixedly connected to one side of the slide block, and the other end of the tension spring is fixedly connected to one side of the inner wall of the slide groove.
7. The detachable high-strength frame according to claim 1, characterized in that, The shape and size of the bolt are adapted to the fixing hole, and the shape and size of the fixing screw are adapted to the mounting hole.
8. The detachable high-strength frame according to claim 7, characterized in that, Both the bolt and the fixing screw have a nut fitted on one end. One end of the bolt passes through the fixing hole and the threaded hole and is threadedly connected to the nut.
9. The detachable high-strength frame according to claim 8, characterized in that, One end of the fixing screw passes through the mounting hole and is threadedly connected to the nut.
10. The separable high-strength frame according to claim 6, characterized in that, The slide block and the slide rod slide together, and the mounting base is fixed to one side of the back hanger.