A bicycle frame structure

Abstract

This utility model relates to the field of bicycle technology, specifically a bicycle frame structure, including a front frame and a rear frame. The front frame includes a head tube and a seat tube, with an upper tube and a lower tube arranged sequentially from top to bottom between the head tube and the seat tube. A slot is provided at the bottom of the seat tube. The rear frame includes a plug and a positioning plate at the rear end of the plug. Rear fork rods are symmetrically arranged on the right end face of the positioning plate, and a storage component is provided near the bottom on the left end face of the seat tube. This bicycle frame structure sets the upper and lower tubes to connect the head tube and the seat tube, realizing a triangular structure of the front frame. With the cooperation of the positioning plate, the plug and the rear fork rods combine to form a triangular structure. The cooperation of the two rear fork rods facilitates the installation and use of the rear wheel. The plug with the positioning plate is inserted into the slot and connected to the first screw hole by a fastening bolt, which quickly and flexibly realizes the assembly and fixation of the front and rear components. With the cooperation of the first support rod and the second support rod, the stability of the front and rear frame support is increased.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, specifically a bicycle frame structure. Background Technology

[0002] A bicycle, also known as a pedal bike or bicycle, is a land transportation vehicle with two wheels that is powered by human pedals; traditional bicycles consist of a fixed frame with two wheels mounted on it.

[0003] Utility model CN222988318U discloses a structurally stable bicycle frame, including a head tube and a bottom tube. A crank support shell is provided at the center of the lower end face of the bottom tube. A rear chain fork is provided at the front and rear of one side center of the crank support shell. A sturdy shell is provided at the center of the outer side of the head tube and the bottom tube. Fixing devices are provided at the upper and lower centers of the outer side of the two sturdy shells. A lower tube is fixedly connected at the center between the two fixing devices at the lower end. An upper tube is fixedly connected at the center between the two fixing devices at the upper end. A protective device is sleeved at the center of the outer side of the upper end of the upper tube.

[0004] The above technical solution, through the fixing device, enables the detachability of the downtube and toptube, facilitating quick assembly, disassembly, repair, and replacement by users. It also allows users to quickly replace damaged or outdated parts, avoiding the need to replace the entire frame, thereby reducing damage costs and increasing service life. However, the overall disassembly and assembly is not convenient or flexible, and the overall frame structure is not stable enough, making it prone to deformation that affects long-term riding performance. The frame is also not convenient for storing cycling water bottles, thus increasing the stability of the assembly. Utility Model Content

[0005] The purpose of this invention is to provide a bicycle frame structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bicycle frame structure includes a front frame with a rear frame inserted into it. The front frame includes a head tube and a seat tube, with an upper tube and a lower tube arranged sequentially from top to bottom between the head tube and the seat tube. A bottom bracket is provided at the bottom of the seat tube, and a slot is provided at the bottom of the seat tube. The rear frame includes a rod, with a positioning plate at the rear end of the rod. Rear fork rods are symmetrically arranged on the right end face of the positioning plate, and a storage component is provided near the bottom on the left end face of the seat tube.

[0008] The storage component includes a bump and a base that is inserted into the left end of the bump. The upper surface of the base is provided with a cup holder, the right end of the base is provided with a T-shaped block, and the top of the left end of the bump is provided with a T-shaped groove.

[0009] Furthermore, the left ends of both the upper and lower tubes are welded and fixed to the head tube, and the right ends of both the upper and lower tubes are welded and fixed to the seat tube. A first support rod is provided near the middle between the upper and lower tubes.

[0010] In this invention, the cooperation of the upper tube and the lower tube increases the stability of the combination between the head tube and the seat tube, forming a triangular structure, and the first support rod further increases the stability of the support between the upper tube and the lower tube.

[0011] Specifically, a seat fork hole is provided at the top of the seat tube near the left side, and the seat fork hole is inserted and installed with the corresponding seat cushion.

[0012] In this invention, the seat fork hole facilitates the installation and insertion of the seat cushion through the corresponding upright.

[0013] It should be noted that the insert rod and the positioning plate are integrally formed, the rear fork rod is V-shaped, the left end of the rear fork rod is welded and fixed to the positioning plate, and a second support rod is provided in the middle of the rear fork rod.

[0014] In this invention, a second support rod is fitted on the rear fork to increase the stability of the rear fork support, and the rear fork and the positioning plate are combined to form a triangular structure to increase the stability of the structural support.

[0015] Furthermore, each of the rear fork rods has a connecting block on its right end, and the bottom of the connecting block has a slot. The connecting block and the rear fork rod are integrally formed.

[0016] In this utility model, the connecting block with the slot facilitates the insertion and installation of the rear wheel. The rear wheel is inserted into the slot through the corresponding axle, which increases the stability of the installation. The axle is fixed to the connecting block by bolts.

[0017] It is worth noting that the front end face of the insertion rod is symmetrically provided with first screw holes, each of which is provided with a fastening bolt, and the outer wall of the seat tube is provided with through holes corresponding to the first screw holes.

[0018] In this invention, the length of the end of the fastening bolt is less than the depth of the first screw hole. The fastening bolt passes through the through hole and is threadedly connected to the first screw hole, thereby fixing the position of the insertion rod in the slot.

[0019] Furthermore, a through groove communicating with the slot is provided on the right end face of the seat tube, the inner diameter of the slot is adapted to the outer diameter of the insertion rod, the positioning plate is inserted into the through groove, and the left side of the positioning plate is tightly fitted to the right end face of the seat tube.

[0020] In this invention, the insertion rod and the slot are inserted into each other, and the positioning plate is tightly fitted to the outer wall of the seat tube, which increases the tightness of the installation of the insertion rod and the seat tube, thereby increasing the aesthetics of the assembly.

[0021] In addition, the right end face of the protrusion is welded and fixed to the left end face of the seat tube, the bottom of the cup holder is welded and fixed to the base, the T-shaped block and the base are integrally formed, the width of the outer wall of the T-shaped block is adapted to the width of the inner wall of the T-shaped groove, a second screw hole is provided on the outer wall of the T-shaped block, a fixing bolt is provided in the second screw hole, and a connecting hole is provided on the outer wall of the protrusion at the position corresponding to the second screw hole.

[0022] In this invention, the cup holder holds the water cup, and the T-shaped block and T-shaped slot are inserted and matched to realize the quick assembly and installation of the base and the protrusion. The fixing bolt passes through the connecting hole and is threadedly connected to the second screw hole. The depth of the end of the fixing bolt is less than the depth of the second screw hole.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This utility model achieves a triangular structure for the front frame by setting an upper tube and a lower tube to connect the head tube and the seat tube. With the cooperation of the positioning plate, the insert rod and the rear fork rod are combined to form a triangular structure. With the cooperation of the two rear fork rods, it is convenient to install and use the rear wheel. The insert rod with the positioning plate is inserted into the slot and connected to the first screw hole by the fastening bolt. The front and rear components can be quickly and flexibly assembled and fixed. With the cooperation of the first support rod and the second support rod, the stability of the front frame and the rear frame is increased.

[0025] 2. This utility model, by setting a seat fork hole, facilitates the seat cushion to be inserted and matched with the upright, and the matching of the storage component facilitates the stable installation of the water cup clip. The base with cup holder and the protrusion are matched and matched by the T-shaped block and T-shaped groove, and with the help of the fixing bolt, the stability of the insertion and installation is increased. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a side view of the vehicle frame of this utility model;

[0028] Figure 3 This is a schematic diagram of the front frame structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the rear frame structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the combined structure of the storage component and the front frame of this utility model.

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Front frame; 10. Head tube; 11. Seat tube; 110. Bottom connector; 111. Slot; 112. Through slot; 113. Through hole; 114. Seat fork hole; 12. Upper tube; 13. Lower tube; 14. First support rod;

[0033] 2. Rear frame; 20. Insert rod; 200. First screw hole; 201. Fastening bolt; 21. Positioning plate; 22. Rear fork rod; 220. Connecting block; 221. Slot; 222. Second support rod;

[0034] 3. Storage component; 30. Protrusion; 300. T-slot; 301. Connecting hole; 31. Base; 310. Cup holder; 311. T-block; 312. Second screw hole; 313. Fixing bolt. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-5 This embodiment provides a technical solution:

[0037] A bicycle frame structure includes a front frame 1, on which a rear frame 2 is inserted and installed. The front frame 1 includes a head tube 10 and a seat tube 11. An upper tube 12 and a lower tube 13 are arranged sequentially from top to bottom between the head tube 10 and the seat tube 11. The left ends of the upper tube 12 and the lower tube 13 are welded and fixed to the head tube 10, and the right ends of the upper tube 12 and the lower tube 13 are welded and fixed to the seat tube 11. A first support rod 14 is provided near the middle between the upper tube 12 and the lower tube 13.

[0038] In this invention, the upper tube 12 and the lower tube 13 work together to increase the stability of the combination between the head tube 10 and the seat tube 11, forming a triangular structure. The first support rod 14 further increases the stability of the support between the upper tube 12 and the lower tube 13.

[0039] Furthermore, a seat fork hole 114 is provided at the top of the seat post 11 near the left side, and the seat fork hole 114 is inserted and installed with the corresponding seat cushion.

[0040] In this invention, the seat fork hole 114 facilitates the installation and connection of the seat cushion through the corresponding upright.

[0041] Secondly, a bottom bracket 110 is provided at the bottom of the seat post 11, which facilitates the installation and fixing of the corresponding gear and foot pedal.

[0042] It should be noted that the seat post 11 has a slot 111 at the bottom, the rear frame 2 includes a rod 20, the rear end of the rod 20 is provided with a positioning plate 21, and the right end face of the positioning plate 21 is symmetrically provided with rear fork rods 22. The rod 20 and the positioning plate 21 are integrally formed. The rear fork rods 22 are V-shaped. The left end of the rear fork rods 22 is welded and fixed to the positioning plate 21, and a second support rod 222 is provided in the middle of each rear fork rod 22.

[0043] In this invention, a second support rod 222 is fitted on the rear fork 22 to increase the stability of the rear fork 22 support, and the rear fork 22 and the positioning plate 21 are combined to form a triangular structure to increase the stability of the structural support.

[0044] Furthermore, each rear fork 22 is provided with a connecting block 220 at the right end, and the bottom of the connecting block 220 is provided with a slot 221. The connecting block 220 and the rear fork 22 are integrally formed.

[0045] In this utility model, the connecting block 220 with the slot 221 facilitates the insertion and installation of the rear wheel. The rear wheel is inserted into the slot 221 through the corresponding axle, which increases the stability of the installation. The axle is fixedly installed to the connecting block 220 by bolts.

[0046] Specifically, the front end face of the insertion rod 20 is symmetrically provided with first screw holes 200, and each of the first screw holes 200 is provided with a fastening bolt 201. The outer wall of the seat tube 11 is provided with through holes 113 corresponding to the first screw holes 200.

[0047] In this invention, the length of the end of the fastening bolt 201 is less than the depth of the first screw hole 200. The fastening bolt 201 passes through the through hole 113 and is threadedly connected to the first screw hole 200, thereby fixing the position of the insertion rod 20 in the slot 111.

[0048] It is worth adding that a through groove 112 communicating with the slot 111 is provided on the right end face of the seat tube 11. The inner diameter of the slot 111 is adapted to the outer diameter of the insertion rod 20. The positioning plate 21 is inserted into the through groove 112 and the left side of the positioning plate 21 is tightly fitted to the right end face of the seat tube 11.

[0049] In this utility model, the insertion rod 20 is inserted into the slot 111, and the positioning plate 21 is tightly fitted to the outer wall of the seat tube 11, which increases the tightness of the installation of the insertion rod 20 and the seat tube 11, thereby increasing the aesthetics of the assembly.

[0050] Furthermore, a storage component 3 is provided on the left end face of the seat tube 11 near the bottom; the storage component 3 includes a protrusion 30 and a base 31 that is inserted into the left end of the protrusion 30, a cup holder 310 is provided on the upper surface of the base 31, a T-shaped block 311 is provided on the right end of the base 31, and a T-shaped groove 300 is provided at the top of the left end of the protrusion 30.

[0051] In addition, the right end face of the protrusion 30 is welded and fixed to the left end face of the seat tube 11, the bottom of the cup holder 310 is welded and fixed to the base 31, the T-shaped block 311 and the base 31 are integrally formed, the width of the outer wall of the T-shaped block 311 is adapted to the width of the inner wall of the T-shaped groove 300, a second screw hole 312 is provided on the outer wall of the T-shaped block 311, a fixing bolt 313 is provided in the second screw hole 312, and a connecting hole 301 is provided on the outer wall of the protrusion 30 at the position corresponding to the second screw hole 312.

[0052] In this utility model, the cup holder 310 holds the water cup, and the T-shaped block 311 and the T-shaped groove 300 are inserted and matched to realize the quick assembly and installation of the base 31 and the protrusion 30. The fixing bolt 313 passes through the connecting hole 301 and is threadedly connected to the second screw hole 312. The depth of the end of the fixing bolt 313 is less than the depth of the second screw hole 312.

[0053] In this embodiment of the bicycle frame structure, when in use, the head tube 10 and seat tube 11 are first fixed together by the upper tube 12 and the lower tube 13. The upper end of the first support rod 14 is fixed together with the upper tube 12 and the lower end is fixed together with the lower tube 13 to increase the stability of the assembly. Then, the rear fork rod 22 with the connecting block 220 is fixed together with the positioning plate 21 with the insert rod 20. The protrusion 30 with the T-slot 300 is fixed together with the seat tube 11. The corresponding seat is connected to the seat fork hole 114 through the upright, which facilitates quick installation or disassembly and replacement.

[0054] When assembly is required, the insertion rod 20 is inserted into the slot 111 at the bottom of the seat tube 11, and the positioning plate 21 is tightly fitted and fixed to the seat tube 11. When the first screw hole 200 corresponds to the through hole 113, the fastening bolt 201 is passed through the through hole 113 and threadedly connected to the first screw hole 200 to realize the assembly and installation of the rear frame 2 and the front frame 1. Then, the base 31 with the cup holder 310 is inserted and engaged with the T-slot 300 through the T-block 311, and the fixing bolt 313 passes through the connecting hole 301 and is threadedly connected to the second screw hole 312 to realize the overall assembly and fixing of the frame.

[0055] When disassembly and replacement are required, fastening bolt 201 is removed, and insertion rod 20 is separated from slot 111, realizing the separation of front frame 1 and rear frame 2, reducing the occupied area, and allowing for individual disassembly and replacement, reducing the waste of materials from overall replacement. The water cup that needs to be carried is clamped with cup holder 310, which facilitates manual removal or installation of the water cup.

Claims

1. A bicycle frame structure comprising a front group frame (1) and a rear group frame (2) inserted into the front group frame (1), characterized in that: The front frame (1) includes a head tube (10) and a seat tube (11). An upper tube (12) and a lower tube (13) are arranged between the head tube (10) and the seat tube (11) from top to bottom. A five-way connector (110) is provided at the bottom of the seat tube (11). A slot (111) is opened at the bottom of the seat tube (11). The rear frame (2) includes a plug rod (20). A positioning plate (21) is provided at the rear end of the plug rod (20). A rear fork rod (22) is symmetrically arranged on the right end face of the positioning plate (21). A storage component (3) is provided on the left end face of the seat tube (11) near the bottom. The storage component (3) includes a protrusion (30) and a base (31) that is inserted into the left end of the protrusion (30). The upper surface of the base (31) is provided with a cup holder (310). The right end of the base (31) is provided with a T-shaped block (311). The top of the left end of the protrusion (30) is provided with a T-shaped groove (300).

2. Bicycle frame structure in accordance with claim 1, characterized in that: The left ends of the upper tube (12) and lower tube (13) are welded and fixed to the head tube (10), and the right ends of the upper tube (12) and lower tube (13) are welded and fixed to the seat tube (11). A first support rod (14) is provided between the upper tube (12) and lower tube (13) near the middle.

3. Bicycle frame structure in accordance with claim 1, characterized in that: The seat tube (11) has a seat fork hole (114) on the top near the left side, and the seat fork hole (114) is inserted and installed with the corresponding seat cushion.

4. Bicycle frame structure in accordance with claim 1, characterized in that: The insert rod (20) and the positioning plate (21) are integrally formed. The rear fork rod (22) is V-shaped. The left end of the rear fork rod (22) is welded and fixed to the positioning plate (21). A second support rod (222) is provided in the middle of the rear fork rod (22).

5. Bicycle frame structure in accordance with claim 4, characterized in that: Each rear fork (22) is provided with a connecting block (220) at the right end. The bottom of the connecting block (220) is provided with a slot (221). The connecting block (220) and the rear fork (22) are integrally formed.

6. Bicycle frame structure in accordance with claim 4, characterized in that: The insertion rod (20) has symmetrical first screw holes (200) on its front end face, and each of the first screw holes (200) is provided with a fastening bolt (201). The outer wall of the seat tube (11) is provided with a through hole (113) corresponding to the first screw hole (200).

7. Bicycle frame structure in accordance with claim 1, characterized in that: The right end face of the seat tube (11) is provided with a through groove (112) that communicates with the slot (111). The inner diameter of the slot (111) is adapted to the outer diameter of the insert rod (20). The positioning plate (21) is inserted into the through groove (112). The left side of the positioning plate (21) is in close contact with the right end face of the seat tube (11).

8. Bicycle frame structure in accordance with claim 1, characterized in that: The right end face of the protrusion (30) is welded and fixed to the left end face of the seat tube (11), the bottom of the cup holder (310) is welded and fixed to the base (31), the T-shaped block (311) and the base (31) are integrally formed, the width of the outer wall of the T-shaped block (311) is adapted to the width of the inner wall of the T-shaped groove (300), a second screw hole (312) is provided on the outer wall of the T-shaped block (311), a fixing bolt (313) is provided in the second screw hole (312), and a connecting hole (301) is provided on the outer wall of the protrusion (30) at the position corresponding to the second screw hole (312).

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