High-load-bearing bicycle frame

Abstract

The utility model relates to the technical field of bicycles, in particular to a high-load-bearing bicycle frame which comprises an inserting part arranged on the side wall of a bicycle frame vertical pipe, and the axis of the inserting part is consistent with that of the bicycle frame vertical pipe. The side wall of the seat tube is provided with a limiting part corresponding to the inserting part, and the limiting part can be inserted into the inserting part; the connecting assembly is arranged outside the bicycle frame vertical pipe and used for locking the relative positions of the limiting part and the inserting part, compared with a traditional mode that the seat pipe and the bicycle frame vertical pipe are fixed through friction force, the connecting mode is more stable, the situation that the seat pipe sinks along the bicycle frame vertical pipe in the riding process can be avoided, and the riding safety is improved. And the effect of improving the stability of the bicycle frame for supporting the saddle is achieved.

Description

Technical Field

[0001] This application relates to the field of bicycle technology, and in particular to a high load-bearing bicycle frame. Background Technology

[0002] Currently, bicycles are increasingly valued for their ergonomic design as both a means of transportation and exercise equipment. Seat height, as a core parameter affecting riding comfort and exercise efficiency, directly impacts the riding experience and safety due to the reliability of its adjustment mechanism.

[0003] Existing bicycle frames typically have a seat tube at the saddle mounting location, and a retaining sleeve is installed at the end of the seat tube. When fixing the saddle to the frame, the seat tube connecting the saddle is inserted into the seat tube, and the fastening bolt at the opening of the retaining sleeve is rotated to tighten the opening of the retaining sleeve, thereby fixing the seat tube and the seat tube together.

[0004] The existing technical solutions described above have the following drawbacks: The connection method primarily relies on the friction between the seat tube and the fixing sleeve. For bicycle frames such as those used in shared bicycles where seat height adjustments are frequent, users find it difficult to accurately control the optimal tightening force. This results in insufficient friction between the frame's upright tube and the seat tube, causing the seat tube to sag along the frame's upright tube on bumpy roads. Utility Model Content

[0005] This application provides a high-load-bearing bicycle frame to prevent the seat post from sinking along the frame seat tube during riding, thereby improving the stability of the frame's support for the saddle.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A high-load-bearing bicycle frame includes a frame stem, a seat post fixedly connected to the seat, and the seat post inserted into the frame stem to an adjustable depth. The frame frame includes a connector on the side wall of the frame stem, aligned with the frame stem axis. A limiting part is provided on the side wall of the seat post corresponding to the connector, and this limiting part can be inserted into the connector. A connecting assembly is provided outside the frame stem to lock the relative position of the limiting part and the connector.

[0008] By adopting the above solution, the connection components are used to lock the insertion state of the limiting part and the plug-in part, which is equivalent to locking the relative position of the seat post and the frame seat tube. Compared with the traditional method of fixing the seat post and the frame seat tube by friction, the connection method in this application is more stable and can prevent the seat post from sinking along the frame seat tube during riding, thereby improving the stability of the frame's support for the saddle.

[0009] Furthermore, the connecting assembly includes a support frame and plug-in rods. The support frame is U-shaped, with its two vertical legs fixedly connected to the plug-in portion. Its crossbeam is a certain distance from the plug-in portion, and the length direction of the crossbeam is consistent with the length direction of the plug-in portion. Several plug-in rods are provided, and the plug-in rods are evenly arranged along the length direction of the crossbeam. A row of limiting holes is opened on the surface of the limiting portion along the height direction. A row of plug-in holes is opened on both sides of the plug-in portion corresponding to the limiting holes. The plug-in rods can pass through the limiting holes and the plug-in holes to lock the relative position of the plug-in portion and the limiting portion.

[0010] By adopting the above solution, the relative positions of the plug-in part and the limiting part are fixed by inserting the plug rod into the plug-in hole and the limiting hole, which effectively avoids the limiting part sinking along the axis of the plug-in part due to excessive force on the top of the limiting part.

[0011] Furthermore, the insertion end of each of the plug rods is provided to be arc-shaped.

[0012] Furthermore, the fixed end of the plug rod is provided with a linkage plate, and the linkage plate is fixedly connected to each plug rod; both ends of the linkage plate in the length direction are provided with locking parts, and each locking part is provided with a mating part on both sides of the plug rod; the locking parts and the mating parts are connected by bolts.

[0013] Furthermore, a protective shell is provided on the side of the plug-in part away from the linkage plate, and the interior of the protective shell is provided with several cell units, each cell unit corresponding to a limiting hole; each cell unit is covered with a rubber layer.

[0014] Furthermore, a cavity is provided inside the side wall of the plug-in part near the linkage plate, and a baffle is provided inside the cavity. The baffle is arranged along the length of the cavity and can slide back and forth in the left and right direction of the cavity. A through hole is provided on the side wall of the cavity away from the frame upright tube body, and a lever is provided in the through hole. The lever passes through the through hole and is fixedly connected to the side wall of the baffle.

[0015] By adopting the above scheme, the baffle can control the opening and closing of the limiting hole on the side near the linkage plate. When the baffle controls the plug hole to close, the plug rod cannot enter the plug part, which makes it easy to adjust the relative position relationship between the plug part and the limiting part.

[0016] Furthermore, a first limiting block and a second limiting block are provided inside the cavity. Both the first limiting block and the second limiting block are fixedly connected to the bottom wall of the cavity. A gap is left between the first limiting block and the second limiting block. The first limiting block and the second limiting block are used to control the maximum range of left and right movement of the baffle along the cavity.

[0017] Furthermore, each of the locking parts and its corresponding mating parts is provided with an elastic element, which is used to pull the locking part and the mating part to move closer to each other.

[0018] In summary, this application has the following technical effects:

[0019] By setting up this frame and using the connecting components to lock the insertion state of the limiting part and the plug-in part, it is equivalent to locking the relative position of the seat post and the frame seat tube. Compared with the traditional method of fixing the seat post and the frame seat tube by friction, the connection method in this application is more stable and can prevent the seat post from sinking along the frame seat tube during riding, thereby improving the stability of the frame's support for the saddle.

[0020] By setting a plug-in rod, the relative position of the plug-in part and the limiting part is fixed by inserting the plug-in rod into the plug-in hole and the limiting hole, which effectively prevents the plug-in part from sinking along the axis of the plug-in part due to excessive force on the top of the limiting part.

[0021] By setting a baffle, the baffle can control the opening and closing of the limiting hole on the side near the linkage plate. When the baffle controls the plug hole to close, the plug rod cannot enter the plug part, which makes it easy to adjust the relative position relationship between the plug part and the limiting part. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a high load-bearing bicycle frame according to this application;

[0023] Figure 2 This is a schematic diagram of the plug-in rod in the plugged-in state of this application;

[0024] Figure 3 This is a cross-sectional view of this application;

[0025] Figure 4 This is a schematic diagram of the internal structure of the cavity in this application;

[0026] Figure 5 This is a schematic diagram of the structure of the first limiting block and the second limiting block of this application.

[0027] In the diagram, 1 is the frame riser; 11 is the insertion part; 111 is the insertion hole; 2 is the seat post; 21 is the limiting part; 211 is the limiting hole; 212 is the mating part; 3 is the connecting assembly; 31 is the support frame; 32 is the insertion rod; 4 is the linkage plate; 41 is the locking part; 5 is the protective shell; 51 is the cell; 511 is the rubber layer; 6 is the baffle; 61 is the lever; 7 is the first limiting block; 8 is the second limiting block; and 9 is the elastic element. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] To facilitate understanding of the technical solutions in this application by those skilled in the art, the connection method between the frame and the seat in the prior art is first briefly described as follows:

[0030] The existing frame is usually fixedly connected to a seat tube (named frame seat tube 1 in the following description). The seat tube is used to connect with the seat tube 2 that connects to the saddle, so that the saddle is connected to the frame.

[0031] Reference Figure 1 This embodiment provides a high-load-bearing bicycle frame, including a frame stem 1 and a seat tube 2. The side wall of the frame stem 1 is provided with a plug-in portion 11 arranged along its own axis. The plug-in portion 11 is connected to the frame stem 1 and has a rectangular cross-section. The side wall of the seat tube 2 is provided with a limiting portion 21 along its own axis. When the seat tube 2 and the frame stem 1 are plugged in, the limiting portion 21 and the plug-in portion 11 are also plugged in. The side wall of the plug-in portion 11 is provided with a connecting component 3. The connecting component 3 is used to lock the relative position of the limiting portion 21 and the plug-in portion 11 after the relative position of the two is determined.

[0032] Reference Figures 1-3 The connecting component 3 includes a support frame 31 and plug rods 32. The support frame 31 is U-shaped, and its two vertical legs are fixedly connected to the side wall of the plug part 11. Its crossbeam is a certain distance from the plug part 11, and the length direction of the crossbeam is consistent with the length direction of the plug part 11. Several plug rods 32 are provided, and the several plug rods 32 are evenly arranged along the length direction of the crossbeam. A row of limiting holes 211 is opened on the surface of the limiting part 21 along the height direction. A row of plug holes 111 is opened on both sides of the plug part 11 corresponding to the limiting holes 211. The distance between adjacent limiting holes 211 is consistent with the distance between adjacent plug holes 111. The plug rods 32 can pass through the plug holes 111 and the limiting holes 211 on both sides of the plug part 11, so that the relative position of the plug part 11 and the limiting part 21 is locked, thereby locking the relative position of the seat tube 2 and the frame upright tube 1.

[0033] Reference Figures 1-3 The insertion end of the plug rod 32 is designed in an arc shape, which reduces the area of ​​the input end of the plug rod 32, making it easier for the plug rod 32 to be inserted into the limiting hole 211 and the plug hole 111. The fixed end of the plug rod 32 is provided with a linkage plate 4, which is fixedly connected to each plug rod 32, so that moving the linkage plate 4 can drive all the plug rods 32 to move together. Compared with the need for individual control of each plug rod 32, this improves the installation efficiency.

[0034] Reference Figures 1-3The insertion part 11 has a cavity on the side wall near the linkage plate 4. The cavity is connected to the insertion hole 111. A baffle 6 is provided in the cavity. The baffle 6 is arranged along the length of the cavity and can slide back and forth in the left and right direction of the cavity. A through hole is provided on the side wall of the cavity away from the frame upright tube 1. A lever 61 is provided in the through hole. The lever 61 passes through the through hole and is fixedly connected to the side wall of the baffle 6. By operating the lever 61, the baffle 6 can be moved left and right along the inside of the cavity.

[0035] Reference Figures 1-5 The cavity is equipped with a first limiting block 7 and a second limiting block 8, both of which are fixedly connected to the bottom wall of the cavity. A gap is left between the first limiting block 7 and the second limiting block 8. The first limiting block 7 and the second limiting block 8 are used to control the maximum range of left and right movement of the baffle 6 along the cavity. When the baffle 6 abuts against the first limiting block 7, the baffle 6 blocks the insertion hole 111. When the baffle 6 blocks the insertion hole 111, the insertion rod 32 cannot enter the insertion part 11, which facilitates the adjustment of the depth of the seat tube 2 inserted into the frame riser tube 1. After the depth of the seat tube 2 and the frame riser tube 1 is adjusted, the baffle 6 is moved to abut against the second limiting block 8. At this time, the insertion hole 111 is opened, and the insertion rod 32 can be inserted into the limiting hole 211 and the insertion hole 111, so that the relative position of the seat tube 2 and the frame riser tube 1 is limited.

[0036] Reference Figures 1-3 Both ends of the linkage plate 4 along its length are provided with locking parts 41, and each end of the insertion part 11 is provided with a mating part 212 corresponding to each locking part 41. When the linkage plate 4 is driven to fully insert the insertion rod 32 into the limiting hole 211 and the insertion hole 111, the linkage plate 4 abuts against the crossbeam of the support frame 31. At this time, the distance between the locking part 41 and the limiting part 21 is at its minimum. In this embodiment, both the locking part 41 and the mating part 212 are provided with threaded holes. When the linkage plate 4 abuts against the crossbeam of the support frame 31... After connection, the two are fixedly connected by bolts. It should be noted that the distance between each threaded hole and the closest vertical insertion hole 111 is consistent with the spacing between adjacent insertion holes 111. Therefore, when the relative position of the limiting part 21 and the insertion part 11 is determined, and the insertion hole 111 corresponds one-to-one with the limiting hole 211, when the bolt passes through the locking part 41 and the mating part 212, it can pass through the limiting hole 211. This can avoid interference between the bolt and the limiting part 212.

[0037] Reference Figures 1-4A protective shell 5 is provided on the side of the plug-in part 11 away from the linkage rod. The protective shell 5 has several cell 51 inside, each cell 51 corresponding to a plug hole 111. Each cell 51 is covered with a rubber layer 511. When the input end of the plug-in rod 32 is inserted into the cell 51, the input end of the plug-in rod 32 and the cell 51 are interference fit.

[0038] Reference Figures 1-4 Each locking part 41 and its corresponding mating part 212 are provided with an elastic element 9. The elastic element 9 is used to pull the locking part 41 and the mating part 212 to move closer to each other. In this embodiment, the elastic element 9 is preferably a compression spring. Under the action of no other external force, the elastic element 9 will pull the plug rod 32 to move closer to the protective shell 5 under its own elasticity. Because the elastic element 9 is provided, when the relative position of the seat tube 2 and the frame upright tube 1 is determined, but the position of the plug hole 111 and the limiting hole 211 are not exactly aligned, the relative position of the seat tube 2 and the frame upright tube 1 can be finely adjusted up and down. Once the insertion hole 111 and the limiting hole 211 are aligned one by one, the elastic element 9 can pull the locking part 41 to move closer to the mating part 212, and the auxiliary insertion rod 32 is inserted into the insertion hole 111 and the limiting hole 211. Therefore, the elastic element 9 facilitates the alignment of the auxiliary insertion hole 111 and the limiting hole 211. It should be noted that the elastic element 9 only plays an auxiliary role in the process of inserting the insertion rod 32 into the limiting hole 211 and the insertion hole 111. If necessary, the operator can push the insertion rod 32 into the limiting hole 211 and the insertion hole 111. This step does not rely solely on the elastic element 9.

[0039] The specific implementation principle of a high load-bearing bicycle frame according to this application embodiment is as follows: First, push the lever 61 to move the baffle 6 along the cavity until it abuts against the first limiting block 7. At this time, the baffle 6 blocks the insertion hole 111 on the side of the insertion part 11 near the input end. At this time, under the action of the elastic element 9, the input end of the insertion rod 32 abuts against the side wall of the baffle 6. Then, adjust the depth of the seat tube 2 inserted into the frame stem tube 1. After the relative position of the seat tube 2 and the frame stem tube 1 is determined, pull the lever 61 in the opposite direction to move the baffle 6. 6 abuts against the second limiting block 8, at which point the insertion hole 111 is opened; then the elastic element 9 will pull the insertion rod 32 towards the insertion hole 111 under its own elasticity until the insertion rod 32 penetrates the insertion hole 111 and the limiting hole 211; then the operator pushes the linkage plate 4 towards the protective shell 5 so that the input end of each insertion rod 32 is interference-fitted with its corresponding cell 51; then bolts are used to fix each locking part 41 to its corresponding mating part 212.

[0040] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A high-load-bearing bicycle frame, wherein a frame stem (1) is provided on the frame, and a seat tube (2) is fixedly connected to the seat, the seat tube (2) being inserted into the frame stem (1), and the depth of the seat tube (2) inserted into the frame stem (1) is adjustable, characterized in that: It includes a plug-in part (11) provided on the side wall of the frame riser (1), the plug-in part (11) being aligned with the axis of the frame riser (1); a limiting part (21) is provided on the side wall of the seat tube (2) corresponding to the plug-in part (11), the limiting part (21) being able to be inserted into the plug-in part (11); a connecting component (3) is provided outside the frame riser (1), the connecting component (3) being used to lock the relative position of the limiting part (21) and the plug-in part (11).

2. The high load-bearing capacity bicycle frame according to claim 1, characterized in that: The connecting component (3) includes a support frame (31) and a plug rod (32). The support frame (31) is U-shaped, and its two vertical legs are fixedly connected to the plug part (11). Its crossbeam is a certain distance from the plug part (11), and the length direction of the crossbeam is consistent with the length direction of the plug part (11). Several plug rods (32) are provided, and the several plug rods (32) are evenly arranged along the length direction of the crossbeam. A row of limiting holes (211) is opened on the surface of the limiting part (21) along the height direction. A row of plug holes (111) is opened on both sides of the plug part (11) corresponding to the limiting holes (211). The plug rod (32) can pass through the limiting holes (211) and the plug holes (111) to lock the relative position of the plug part (11) and the limiting part (21).

3. A high-load-bearing bicycle frame according to claim 2, characterized in that: The insertion end of each of the aforementioned plug rods (32) is provided to be arc-shaped.

4. A high-load-bearing bicycle frame according to claim 2, characterized in that: The fixed end of the plug rod (32) is provided with a linkage plate (4), and the linkage plate (4) is fixedly connected to each plug rod (32); both ends of the linkage plate (4) in the length direction are provided with locking parts (41), and both sides of the plug part (11) are provided with mating parts (212) corresponding to each locking part (41); the locking parts (41) and the mating parts (212) are connected by bolts.

5. A high-load-bearing bicycle frame according to claim 4, characterized in that: The plug-in part (11) is provided with a protective shell (5) on the side away from the linkage plate (4). The protective shell (5) is provided with a number of cell units (51), and each cell unit (51) corresponds to a limiting hole (211). Each cell unit (51) is covered with a rubber layer (511).

6. A high-load-bearing bicycle frame according to claim 4, characterized in that: The insertion part (11) has a cavity inside the side wall near the linkage plate (4). A baffle (6) is provided inside the cavity. The baffle (6) is arranged along the length of the cavity and can slide back and forth in the left and right directions of the cavity. A through hole is provided on the side wall away from the frame upright tube (1). A lever (61) is provided in the through hole. The lever (61) passes through the through hole and is fixedly connected to the side wall of the baffle (6).

7. A high-load-bearing bicycle frame according to claim 6, characterized in that: The cavity is provided with a first limiting block (7) and a second limiting block (8). The first limiting block (7) and the second limiting block (8) are both fixedly connected to the bottom wall of the cavity. There is a gap between the first limiting block (7) and the second limiting block (8). The first limiting block (7) and the second limiting block (8) are used to control the maximum range of the baffle (6) moving left and right along the cavity.

8. A high-load-bearing bicycle frame according to claim 4, characterized in that: Each of the locking parts (41) and its corresponding mating parts (212) is provided with an elastic element (9), which is used to pull the locking parts (41) and the mating parts (212) to move closer to each other.

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