Lightweight aluminum alloy bicycle frame with built-in cable channel

Abstract

The utility model provides a light weight aluminum alloy bicycle frame with built-in wiring channel, including front frame and rear frame, the front frame includes head tube, installation shell, lower pipe between installation shell and head tube, middle pipe on installation shell, upper pipe between middle pipe and head tube and upper mounting bracket on middle pipe, the middle pipe includes sleeve pipe and telescopic pipe in sleeve pipe, one end of telescopic pipe and sleeve pipe sliding connection, the other end of telescopic pipe and upper mounting bracket are connected, the lower side of upper mounting bracket is equipped with lower mounting bracket still, lower mounting bracket and sleeve pipe fixed connection, the tail end of lower mounting bracket is connected with upper mounting bracket through adjusting device, upper mounting bracket front end is separated with lower mounting bracket through the sliding of telescopic pipe, and upper mounting bracket rear end is separated with lower mounting bracket through adjusting device, make upper mounting bracket stable in stress after lifting, and through adjusting the distance between upper mounting bracket and lower mounting bracket can expand the containing volume of both as goods shelf, increase the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of bicycle frame technology, and in particular to a lightweight aluminum alloy bicycle frame with built-in cable routing channels. Background Technology

[0002] Existing bicycle frames generally serve primarily as main supports without any additional functions. Current improvements are mostly focused on enhancing the frame's strength, resulting in a single-function frame. However, with the accelerating pace of life, more and more fields, such as food delivery workers, are using electric vehicles to transport goods. People's demand for electric vehicles with cargo-carrying structures is increasing. Most electric vehicles either lack cargo-carrying structures or have unstable and impractical structures.

[0003] Utility model patent CN222859650U discloses an electric bicycle frame with a rack, including a downtube, a headtube fixed to the front end of the downtube, a mounting shell fixed to the rear end of the downtube, a mid-tube assembly fixed to the mounting shell, a mounting bracket fixed to the upper end of the mid-tube assembly, support brackets fixed to both sides of the bottom of the mounting bracket, and a rear fork hinged to the mounting shell. The support bracket includes a first support tube and a second support tube, with a cavity formed between the two first support tubes, the mounting bracket, and the mid-tube assembly. A shock absorber is provided between the rear fork and the second support tube. This mounting bracket is fixed to the frame and cannot be raised or lowered according to actual conditions, resulting in limited functionality and a narrow range of applications. Utility Model Content

[0004] The problem this invention aims to solve is to provide a lightweight aluminum alloy bicycle frame with built-in cable routing channels. The upper mounting bracket can be raised and lowered, resulting in diverse functions and a wide range of applications.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a lightweight aluminum alloy bicycle frame with built-in cable routing channels, including a front frame and a rear frame. The front frame includes a head tube, a mounting shell, a lower tube disposed between the mounting shell and the head tube, a middle tube disposed on the mounting shell, an upper tube disposed between the middle tube and the head tube, and an upper mounting bracket disposed on the middle tube. The lower tube has a first accommodating chamber for accommodating a battery, and the mounting shell has a second accommodating chamber for accommodating a motor. The lower tube has a first channel, and the mounting shell has a second channel, which are connected to each other. The middle tube includes a sleeve and a telescopic tube disposed within the sleeve. One end of the telescopic tube is slidably connected to the sleeve, and the other end of the telescopic tube is connected to the upper mounting bracket. A lower mounting bracket is also provided below the upper mounting bracket. The lower mounting bracket is fixedly connected to the sleeve, and the tail end of the lower mounting bracket is connected to the upper mounting bracket through an adjustment device. One end of the adjustment device is connected to the upper mounting bracket, and the other end of the adjustment device is connected to the lower mounting bracket. The working principle of this utility model is as follows: the front end of the upper mounting frame is separated from the lower mounting frame by sliding through the telescopic tube, and the rear end of the upper mounting frame is separated from the lower mounting frame by the adjustment device, so that the upper mounting frame is stable under force after lifting and lowering. Moreover, by adjusting the distance between the upper mounting frame and the lower mounting frame, the capacity of both as shelves can be increased, thus increasing the scope of application.

[0006] As an improvement, the adjustment device is an adjustment plate, one end of which is provided with a first connection hole for connecting to the upper mounting bracket, the first connection hole being an elongated hole; the other end of the adjustment plate is provided with several second connection holes for connecting to the lower mounting bracket.

[0007] As an improvement, the upper mounting bracket is provided with a first connecting seat, which is symmetrically fixed on both sides of the rear end of the upper mounting bracket and is fixedly connected to a first connecting hole; the lower mounting bracket is provided with a second connecting seat, which is symmetrically fixed on both sides of the rear end of the lower mounting bracket and is fixedly connected to a second connecting hole.

[0008] As an improvement, the upper mounting bracket has a mounting plate fixedly connected to its front end, and the telescopic tube passes through the mounting plate and is fixedly connected to the mounting plate.

[0009] As an improvement, the upper mounting bracket is provided with a first connecting plate, the two ends of which are welded to the two sides of the upper mounting bracket, and the first connecting plate is provided with a third connecting hole; the lower mounting bracket is provided with a second connecting plate, the two ends of which are welded to the two sides of the lower mounting bracket, and the second connecting plate is provided with a fourth connecting hole.

[0010] As an improvement, the upper mounting frame is provided with a third connecting plate at its tail end. The third connecting plate is welded to the upper mounting frame. A limiting plate is provided at the bottom of the third connecting plate. One end of the limiting plate is fixedly connected to the telescopic tube, and the other end of the limiting plate is welded to the third connecting plate.

[0011] As an improvement, the upper tube is S-shaped, and a reinforcing plate and a reinforcing rod are provided between the upper tube and the lower tube. The reinforcing plate is welded to the upper tube, the lower tube and the head tube respectively, and the reinforcing rod is located below the reinforcing plate and is welded to the upper tube, the lower tube and the reinforcing plate respectively.

[0012] As an improvement, the rear frame includes upper forks symmetrically arranged on both sides of the center tube and lower forks symmetrically arranged on both sides of the mounting shell. The upper forks are fixedly connected to the sleeve, and the lower forks are fixedly connected to the mounting shell.

[0013] As an improvement, a first reinforcing tube and a second reinforcing tube are provided between the lower fork arm and the lower mounting bracket. The two lower forks correspond to two first reinforcing tubes and two second reinforcing tubes, respectively. The two ends of the first reinforcing tube are welded to the lower fork arm and the lower mounting bracket, respectively, and the two ends of the second reinforcing tube are welded to the lower fork arm and the lower mounting bracket, respectively.

[0014] The beneficial effects of this utility model are: by adjusting the extension length of the telescopic tube and the connection between the lower mounting frame and the second connecting holes at different positions, the upper mounting frame can be raised and lowered; by fixing the telescopic tube with a locking device and fixing the connection between the second connecting hole and the lower mounting frame with bolts, the upper mounting frame can be locked; thus, the storage volume between the upper and lower mounting frames can be changed, and it has a wide range of applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a front view of the upper mounting bracket.

[0017] Figure 3 This is a top view of the mounting bracket.

[0018] Figure 4 This is a cross-sectional view of the upper mounting bracket.

[0019] Figure 5 This is a top view of the lower mounting bracket.

[0020] Figure 6 This is a top view of the upper fork arm.

[0021] Figure 7 This is a bottom view of the lower fork arm.

[0022] Figure 8 This is a schematic diagram of the adjustment plate.

[0023] Explanation of the labels in the diagram: 1. Head tube; 2. Upper tube; 21. Reinforcing plate; 22. Reinforcing rod; 3. Lower tube; 4. Mounting shell; 5. Middle tube; 51. Sleeve; 52. Telescopic tube; 6. Upper mounting bracket; 61. Mounting plate; 611. Reinforcing block; 62. First connecting plate; 63. Third connecting plate; 631. Limiting plate; 64. First connecting seat; 7. Lower mounting bracket; 71. Adjusting plate; 711. First connecting hole; 712. Second connecting hole; 72. Second connecting seat; 73. Second connecting plate; 8. Upper fork arm; 81. First reinforcing tube; 82. Second reinforcing tube; 9. Lower fork arm. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a lightweight aluminum alloy bicycle frame with built-in cable routing channels includes a front frame and a rear frame. The front frame includes a head tube 1, a mounting shell 4, a lower tube 3 disposed between the mounting shell 4 and the head tube 1, a middle tube 5 disposed on the mounting shell 4, an upper tube 2 disposed between the middle tube 5 and the head tube 1, an upper mounting bracket 6 disposed on the middle tube 5, and a lower mounting bracket 7 disposed below the upper mounting bracket 6. The lower tube 3 has a first housing chamber for accommodating the battery, and the mounting shell 4 has a second housing chamber for accommodating the motor. The lower tube 3 also has a first channel for cable routing, and the mounting shell 4 also has a second channel for cable routing, with the first channel and the second channel connected. The central tube 5 includes a sleeve 51 and a telescopic tube 52 disposed within the sleeve 51. The lower end of the telescopic tube 52 is slidably connected to the sleeve 51, and the upper end of the telescopic tube 52 is connected to the upper mounting frame 6. The lower mounting frame 7 is fixedly connected to the sleeve 51. An adjustment device is provided between the lower mounting frame 7 and the upper mounting frame 6. One end of the adjustment device is connected to the upper mounting frame 6, and the other end of the adjustment device is connected to the lower mounting frame 7. The front end of the upper mounting frame 6 is separated from the lower mounting frame 7 by sliding the telescopic tube 52, and the rear end of the upper mounting frame 6 is separated from the lower mounting frame 7 by the adjustment device. This ensures that the upper mounting frame 6 is stable under force after lifting and lowering. Furthermore, by adjusting the distance between the upper mounting frame 6 and the lower mounting frame 7, the accommodating volume of both as shelves can be increased, thereby expanding the applicable range.

[0026] The specific structure of this utility model is described in further detail below: like Figure 1 , 2As shown in Figures 3, 4, 5, and 8, the adjusting device is an adjusting plate 71. One end of the adjusting plate 71 is provided with a first connecting hole 711 that connects to the upper mounting frame 6. The first connecting hole 711 is an elongated hole. The other end of the adjusting plate 71 is provided with several second connecting holes 712 that can connect to the lower mounting frame 7. By connecting with the second connecting holes 712 at different positions, the distance between the upper mounting frame 6 and the lower mounting frame 7 can be changed. To enhance connection and force balance, the upper mounting bracket 6 is provided with a first connecting seat 64, which is symmetrically welded to both sides of the rear end of the upper mounting bracket 6. The first connecting seat 64 is connected to the first connecting hole 711 by bolts. The lower mounting bracket 7 is provided with a second connecting seat 72, which is symmetrically welded to both sides of the rear end of the lower mounting bracket 7. The second connecting seat 72 is connected to the second connecting hole 712 by bolts. The number of the first connecting seat 64, the second connecting seat 72, and the adjusting plate 71 are corresponding to each other, that is, there are two of each of the three.

[0027] The upper mounting frame 6 has a mounting plate 61 welded to its front end. The telescopic tube 52 passes through the mounting plate 61 and connects to the seat cushion. The telescopic tube 52 is fixedly connected to the mounting plate 61 and then to the upper mounting frame 6. A reinforcing block 611 is also provided between the mounting plate 61 and the telescopic tube 52. The upper mounting frame 6 has a first connecting plate 62, the two ends of which are welded to the two sides of the upper mounting frame 6. The first connecting plate 62 has a third connecting hole. The lower mounting frame 7 has a second connecting plate 73, the two ends of which are welded to the two sides of the lower mounting frame 7. The second connecting plate has a fourth connecting hole. Users can connect to external objects through the third and fourth connecting holes. The upper mounting bracket 6 is also provided with a third connecting plate 63 at its tail end. The third connecting plate 63 is welded to the upper mounting bracket 6. The bottom of the third connecting plate 63 is provided with two limiting plates 631, which are symmetrically arranged on both sides of the third connecting plate 63. The limiting plates 631 are rectangular. The front end of the limiting plate 631 is fixedly connected to the telescopic tube 52, and the tail end of the limiting plate 631 is welded to the third connecting plate 63. The limiting plates 631 can prevent the upper mounting bracket 6 from directly contacting the lower mounting bracket 7, thereby extending the service life of both.

[0028] The upper tube 2 is S-shaped. A reinforcing plate 21 and a reinforcing rod 22 are provided between the upper tube 2 and the lower tube 3. The reinforcing plate 21 is welded to the upper tube 2, the lower tube 3 and the head tube 1 respectively. The reinforcing rod 22 is located below the reinforcing plate 21 and is welded to the upper tube 2, the lower tube 3 and the reinforcing plate 21 respectively; to ensure the structural strength of the upper tube 2.

[0029] like Figure 1 , 6The rear frame, as described in section 7, includes upper fork arms 8 symmetrically arranged on both sides of the center tube 5 and lower fork arms 9 symmetrically arranged on both sides of the mounting shell 4. The upper fork arms 8 are welded to the sleeve 51, and the lower fork arms 9 are welded to the mounting shell 4. A first reinforcing tube 81 and a second reinforcing tube 82 are provided between the lower fork arms 9 and the lower mounting frame 7. The two lower fork arms 9 correspond to two first reinforcing tubes 81 and two second reinforcing tubes 82, respectively. The second reinforcing tubes 82 are located between the first reinforcing tubes 81 and the center tube 5. The two ends of the first reinforcing tubes 81 are welded to the lower fork arms 9 and the lower mounting frame 7, respectively, and the two ends of the second reinforcing tubes 82 are welded to the lower fork arms 9 and the lower mounting frame 7, respectively, ensuring the structural strength of the rear frame. This utility model is made entirely of aluminum alloy material, resulting in a stable overall structure and lightweight construction.

[0030] The working principle of this utility model is as follows: by adjusting the extension length of the telescopic tube 52 and the connection between the lower mounting frame 7 and the second connecting holes 712 at different positions, the upper mounting frame 6 can be raised and lowered; by fixing the telescopic tube 52 with a locking device and fixing the connection between the second connecting hole 712 and the lower mounting frame 7 with bolts, the upper mounting frame 6 can be locked; thereby realizing the change of storage volume between the upper mounting frame 6 and the lower mounting frame 7, which has a wide range of applications.

Claims

1. A lightweight aluminum alloy bicycle frame with built-in cable routing channels, comprising a front frame and a rear frame, wherein the front frame includes a head tube, a mounting shell, a down tube disposed between the mounting shell and the head tube, a center tube disposed on the mounting shell, a top tube disposed between the center tube and the head tube, and an upper mounting bracket disposed on the center tube, characterized in that: The lower tube has a first accommodating chamber for housing the battery, and the mounting shell has a second accommodating chamber for housing the motor. The lower tube has a first channel, and the mounting shell has a second channel, which are connected to each other. The middle tube includes a sleeve and a telescopic tube disposed within the sleeve. One end of the telescopic tube is slidably connected to the sleeve, and the other end of the telescopic tube is connected to the upper mounting frame. A lower mounting frame is also provided below the upper mounting frame. The lower mounting frame is fixedly connected to the sleeve, and the tail end of the lower mounting frame is connected to the upper mounting frame through an adjustment device. One end of the adjustment device is connected to the upper mounting frame, and the other end of the adjustment device is connected to the lower mounting frame.

2. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The adjusting device is an adjusting plate. One end of the adjusting plate is provided with a first connecting hole for connecting to the upper mounting bracket. The first connecting hole is an elongated hole. The other end of the adjusting plate is provided with several second connecting holes for connecting to the lower mounting bracket.

3. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 2, characterized in that: The upper mounting bracket is provided with a first connecting seat, which is symmetrically fixed on both sides of the rear end of the upper mounting bracket and is fixedly connected to a first connecting hole; the lower mounting bracket is provided with a second connecting seat, which is symmetrically fixed on both sides of the rear end of the lower mounting bracket and is fixedly connected to a second connecting hole.

4. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The upper mounting bracket has a mounting plate fixedly connected to its front end, and the telescopic tube passes through the mounting plate and is fixedly connected to the mounting plate.

5. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The upper mounting bracket is provided with a first connecting plate, the two ends of which are welded to the two sides of the upper mounting bracket, and the first connecting plate is provided with a third connecting hole; the lower mounting bracket is provided with a second connecting plate, the two ends of which are welded to the two sides of the lower mounting bracket, and the second connecting plate is provided with a fourth connecting hole.

6. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The upper mounting frame is provided with a third connecting plate at its tail end. The third connecting plate is welded to the upper mounting frame. The bottom of the third connecting plate is provided with a limiting plate. One end of the limiting plate is fixedly connected to the telescopic tube, and the other end of the limiting plate is welded to the third connecting plate.

7. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The upper tube is S-shaped, and a reinforcing plate and a reinforcing rod are provided between the upper tube and the lower tube. The reinforcing plate is welded to the upper tube, the lower tube and the head tube respectively, and the reinforcing rod is located below the reinforcing plate and is welded to the upper tube, the lower tube and the reinforcing plate respectively.

8. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 1, characterized in that: The rear frame includes upper forks symmetrically arranged on both sides of the center tube and lower forks symmetrically arranged on both sides of the mounting housing. The upper forks are fixedly connected to the sleeve, and the lower forks are fixedly connected to the mounting housing.

9. The lightweight aluminum alloy bicycle frame with built-in cable routing channel according to claim 8, characterized in that: A first reinforcing tube and a second reinforcing tube are provided between the lower fork arm and the lower mounting frame. The two lower forks are respectively connected to two first reinforcing tubes and two second reinforcing tubes. The two ends of the first reinforcing tube are welded to the lower fork arm and the lower mounting frame, respectively. The two ends of the second reinforcing tube are also welded to the lower fork arm and the lower mounting frame, respectively.

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