Portable back frame

Abstract

The utility model belongs to the technical field of bicycle carrying frames, and particularly discloses a portable bicycle carrying frame. A telescopic pipe is arranged at one end of the supporting pipe, the interiors of the supporting pipe and the telescopic pipe are of hollow structures, and a fixing pin is arranged at the bottom of the supporting pipe; two symmetrical guide rails A are arranged at the two ends of the bracket A, the two hub frames A are located at the two ends of the bracket A, the two lock catches A are located at one ends of the hub frames A, and one ends of the lock catches A penetrate through the hub frames A and the guide rails A to be locked; the two symmetrical guide rails B are arranged at the two ends of the bracket B, the two lock catches B are located at one end of the hub frame B, one end of each lock catch B penetrates through the hub frame B and the corresponding guide rail B to be locked, the hub frame A and the hub frame B can slide at the two ends of the bracket A and the two ends of the bracket B, and therefore the two-wheel vehicle lifting structure can be suitable for two-wheel vehicles with different axle distances. And when only one two-wheeled vehicle is provided, the telescopic pipe can be pulled away.

Description

Technical Field

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

[0002] A bicycle trailer is a non-powered, frame-type device that transports goods to their destination via a hitch system. Depending on their purpose, bicycle trailers can be divided into several types, including general cargo trailers, child passenger trailers, bicycle trailers, disabled walking trailers, and pet trailers. These trailers are typically used to transport bicycles or other light items, and the appropriate number of wheels and design can be selected as needed. To avoid taking up interior space, a back rack is used to transport the bicycle. However, most conventional back racks are located on the roof of the vehicle, which increases the vehicle's drag coefficient and improves fuel consumption. Utility Model Content

[0003] The purpose of this invention is to provide a lightweight bicycle rack to solve the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lightweight bicycle rack, characterized in that it comprises;

[0005] The support tube has a telescopic tube at one end. Both the support tube and the telescopic tube have hollow interiors. The telescopic tube is embedded inside the support tube and slidably connected to it. The bottom of the support tube has a fixing pin, and the top of the fixing pin passes through the support tube and abuts against the outer wall of the telescopic tube.

[0006] One end of the support tube has a two-wheeled vehicle lifting structure, and one end of the telescopic tube has a two-wheeled vehicle lifting extension structure.

[0007] The two-wheeled vehicle lifting structure includes a bracket A, a wheel hub bracket A, and a locking mechanism A;

[0008] The bracket A has two symmetrical guide rails A at both ends. There are two hub brackets A at both ends of the bracket A. There are two latches A at one end of the hub bracket A. One end of the latches A passes through the hub bracket A and the guide rails A for locking.

[0009] The two-wheeled vehicle lifting extension structure includes a bracket B, a hub bracket B, and a latch B;

[0010] The bracket B has two symmetrical guide rails B at both ends. There are two hub brackets B located at both ends of the bracket B. There are two latches B located at one end of the hub bracket B. One end of the latches B passes through the hub bracket B and the guide rails B for locking.

[0011] Preferably, the wheel hub frame A is U-shaped, with a screw A in the middle for fixing, and both ends of the wheel hub frame A are attached to the sides of the bracket A. The screw A clamps the two ends of the wheel hub frame A together, so that the end of the wheel hub frame A away from the bracket A has a groove shape, thereby placing the wheel. When placing the wheel, it sinks into the wheel hub frame A due to its own weight.

[0012] Preferably, the bottom of the bracket A has an integrally fixed support frame A, the bottom of the support frame A is welded to the top of the support tube, and the two sides of the support frame A have two symmetrical reinforcing plates. The two reinforcing plates abut against the two sides of the support tube and are welded and fixed. The support frame A and the reinforcing plates fit the support tube on multiple sides to achieve multi-sided clamping and fixing, thereby improving the structural strength.

[0013] Preferably, each bracket B includes two hub brackets B at both ends, with multiple screws B on the two hub brackets B. The two hub brackets B are attached to both sides of the bracket B, and the top of the hub brackets B is inclined. The two hub brackets B are combined to form a "Y" shape. The wheel can be supported and limited by the "Y" shaped hub brackets B.

[0014] Preferably, the bottom of the bracket B has an integrally fixed support frame B, the bottom of which is welded to the top of the bracket A. The support frame B has two symmetrical reinforcing plates B on both sides, which are welded and fixed against the sides of the bracket A. The support frame B and the reinforcing plates B are used to fit the bracket A on multiple surfaces, thereby achieving multi-faceted clamping and fixing, which improves the structural strength.

[0015] Preferably, the support tube has a positioning frame on its upper part, and the side of the positioning frame has multiple threaded positioning rods. The positioning rods are inserted into the wheel hub of the spare tire in the car's parking space and fixed by nuts. The positioning frame is tied to the two-wheeled vehicle body with straps, thereby limiting the top of the vehicle frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Place the two wheels of vehicle A onto the two wheel hub brackets A respectively. When placing the wheels, they will sink into the wheel hub brackets A due to their own weight. The wheel hub brackets A can slide at the end of the bracket A, thus making it suitable for two-wheeled vehicles with different wheelbases. When the wheels slide to the required distance, they are locked by the latch A for limiting and fixing.

[0018] 2. When it is necessary to fix two vehicles, place the two wheels of vehicle B on the two wheel hub brackets B. The wheel hub brackets B, which are Y-shaped, can lift the wheels and limit their movement. The wheel hub brackets B can slide at both ends of the bracket B, thus making them suitable for two-wheeled vehicles with different wheelbases. When the wheel hub brackets B are slid to the desired position, they are locked by the latch B for limiting and fixing. The two-wheeled vehicle lifting structure can be used independently. When there is only one two-wheeled vehicle, the telescopic tube can be removed. This utility model allows the two-wheeled vehicle to be placed in the parking space without affecting the vehicle's wind resistance coefficient, thereby avoiding increased energy consumption. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the two-wheeled vehicle lifting structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the two-wheeled vehicle lifting extension structure of this utility model.

[0022] In the diagram: 100, support tube; 101, telescopic tube; 102, fixing pin; 200, bracket A; 201, guide rail A; 202, support frame A; 203, reinforcing plate; 300, hub frame A; 301, screw A; 302, latch A; 400, bracket B; 401, guide rail B; 402, support frame B; 403, reinforcing plate B; 500, hub frame B; 501, screw B; 502, latch B; 600, positioning rod; 601, positioning frame. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1-3 This utility model provides a technical solution: a lightweight bicycle frame, characterized in that it includes;

[0027] The support tube 100 has a telescopic tube 101 at one end. Both the support tube 100 and the telescopic tube 101 have hollow interiors. The telescopic tube 101 is embedded in the interior of the support tube 100 and slidably connected thereto. The bottom of the support tube 100 has a fixing pin 102, and the top of the fixing pin 102 passes through the support tube 100 and abuts against the outer wall of the telescopic tube 101.

[0028] One end of the support tube 100 has a two-wheeled vehicle lifting structure, and one end of the telescopic tube 101 has a two-wheeled vehicle lifting extension structure.

[0029] The two-wheeled vehicle lifting structure includes a bracket A200, a wheel hub bracket A300, and a locking mechanism A302;

[0030] The bracket A200 has two symmetrical guide rails A201 at both ends. There are two hub brackets A300, which are located at both ends of the bracket A200. There are two latches A302, which are located at one end of the hub bracket A300. One end of the latch A302 passes through the hub bracket A300 and the guide rail A201 for locking.

[0031] The two-wheeled vehicle lifting extension structure includes a bracket B400, a wheel hub bracket B500, and a latch B502;

[0032] The bracket B400 has two symmetrical guide rails B401 at both ends. There are two hub brackets B500, located at both ends of the bracket B400. There are two latches B502, located at one end of the hub bracket B500. One end of the latches B502 passes through the hub bracket B500 and the guide rails B401 for locking.

[0033] Furthermore, the wheel hub bracket A300 is U-shaped, with a screw A301 for fixing in the middle, and both ends of the wheel hub bracket A300 are attached to the sides of the bracket A200. The screw A301 clamps the two ends of the wheel hub bracket A300 together, so that the end of the wheel hub bracket A300 away from the bracket A200 has a groove shape, so as to place the wheel. When placing the wheel, it sinks into the wheel hub bracket A300 due to its own weight.

[0034] Furthermore, the bottom of the bracket A200 has an integrally fixed support frame A202. The bottom of the support frame A202 is welded to the top of the support tube 100, and the two sides of the support frame A202 have two symmetrical reinforcing plates 203. The two reinforcing plates 203 abut against the two sides of the support tube 100 and are welded and fixed. The support frame A202 and the reinforcing plates 203 fit the support tube 100 on multiple surfaces, achieving multi-face clamping and fixing, thereby improving the structural strength.

[0035] Furthermore, each bracket B400 includes two hub brackets B500 at both ends, with multiple screws B501 on each hub bracket B500. The two hub brackets B500 are attached to both sides of the bracket B400, and the top of the hub brackets B500 is inclined. The two hub brackets B500 are combined to form a "Y" shape. The wheel can be supported and limited by the "Y" shaped hub brackets B500.

[0036] Furthermore, the bottom of the bracket B400 has an integrally fixed support frame B402, the bottom of which is welded to the top of the bracket A200. The support frame B402 has two symmetrical reinforcing plates B403 on both sides. The two reinforcing plates B403 abut against the sides of the bracket A200 and are welded and fixed. The support frame B402 and the reinforcing plates B403 fit together on multiple sides of the bracket A200, achieving multi-faceted clamping and fixing, thereby improving the structural strength.

[0037] Furthermore, the support tube 100 has a positioning frame 601 on its upper part, and the side of the positioning frame 601 has multiple threaded positioning rods 600. The positioning rods 600 are inserted into the wheel hub of the spare tire in the car parking space and fixed by nuts. The positioning frame 601 is tied to the two-wheeled vehicle body with straps, thereby limiting the top of the vehicle frame.

[0038] Working principle: When in use, the two wheels of vehicle A are respectively clamped onto the two wheel hub brackets A300. When placing the wheels, they sink into the wheel hub brackets A300 due to their own weight. The wheel hub brackets A300 can slide at the end of the bracket A200, thus making it suitable for two-wheeled vehicles with different wheelbases. When the wheels slide to the required distance, they are locked by the latch A302 for limiting and fixing.

[0039] When it is necessary to fix the two vehicles, place the two wheels of vehicle B on the two wheel hub brackets B500. The wheel hub brackets B500, which are Y-shaped, can lift the wheels and limit their movement. The wheel hub brackets B500 can slide at both ends of the bracket B400, thus making it suitable for two-wheeled vehicles with different wheelbases. When the wheel hub brackets B500 are slid to the desired position, they are locked by the latch B502 to limit and fix them.

[0040] Furthermore, the positioning frame 601 is tied to the two-wheeled vehicle body with straps to limit the top of the frame. The two straps can tie vehicle A and vehicle B together at the same time. The two-wheeled vehicle lifting structure can be used independently. When there is only one two-wheeled vehicle, the telescopic tube 101 can be pulled out.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight bicycle frame, characterized in that: include; A support tube (100) has a telescopic tube (101) at one end. Both the support tube (100) and the telescopic tube (101) have hollow interiors. The telescopic tube (101) is embedded in the interior of the support tube (100) and slidably connected to it. The bottom of the support tube (100) has a fixing pin (102), and the top of the fixing pin (102) passes through the support tube (100) and abuts against the outer wall of the telescopic tube (101). One end of the support tube (100) has a two-wheeled vehicle lifting structure, and one end of the telescopic tube (101) has a two-wheeled vehicle lifting extension structure; The two-wheeled vehicle lifting structure includes a bracket A (200), a hub bracket A (300), and a latch A (302); The bracket A (200) has two symmetrical guide rails A (201) at both ends. There are two hub brackets A (300), which are located at both ends of the bracket A (200). There are two latches A (302), which are located at one end of the hub bracket A (300). One end of the latch A (302) passes through the hub bracket A (300) and the guide rails A (201) for locking. The two-wheeled vehicle lifting extension structure includes a bracket B (400), a hub frame B (500), and a latch B (502); The bracket B (400) has two symmetrical guide rails B (401) at both ends. There are two hub brackets B (500), which are located at both ends of the bracket B (400). There are two latches B (502), which are located at one end of the hub bracket B (500). One end of the latches B (502) passes through the hub bracket B (500) and the guide rails B (401) for locking.

2. The lightweight bicycle frame according to claim 1, characterized in that: The hub bracket A (300) is U-shaped, with a screw A (301) for fixing in the middle, and both ends of the hub bracket A (300) are attached to the sides of the bracket A (200).

3. The lightweight bicycle frame according to claim 1, characterized in that: The bracket A (200) has an integrally fixed support frame A (202) at its bottom. The bottom of the support frame A (202) is welded to the top of the support tube (100), and the support frame A (202) has two symmetrical reinforcing plates (203) on both sides. The two reinforcing plates (203) abut against the two sides of the support tube (100) and are welded and fixed.

4. A lightweight bicycle frame according to claim 1, characterized in that: Each of the brackets B (400) includes two hub brackets B (500) at both ends, with multiple screws B (501) on the two hub brackets B (500), the two hub brackets B (500) are attached to both sides of the bracket B (400), and the top of the hub brackets B (500) is inclined.

5. A lightweight bicycle frame according to claim 1, characterized in that: The bracket B (400) has an integrally fixed support frame B (402) at its bottom. The bottom of the support frame B (402) is welded to the top of the bracket A (200). The support frame B (402) has two symmetrical reinforcing plates B (403) on both sides. The two reinforcing plates B (403) abut against the sides of the bracket A (200) and are welded and fixed.

6. A lightweight bicycle frame according to claim 1, characterized in that: The support tube (100) has a positioning frame (601) above it, and the side of the positioning frame (601) has a plurality of threaded positioning rods (600).

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