CN219707218U

CN219707218U - Bicycle frame

Info

Publication number: CN219707218U
Application number: CN202320740350.6U
Authority: CN
Inventors: 查建双
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-09-19
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a bicycle frame, which comprises a lower pipe, wherein the lower pipe is obliquely arranged in a way of being high in front and low in back, the front end of the lower pipe is used for connecting a head pipe, the rear end of the lower pipe is connected with a driving piece mounting box, a first slot is arranged on the lower pipe, and the opening of the first slot faces downwards; the driving piece mounting box is provided with a second slot, and the opening of the second slot faces downwards; the driving piece installation box is used for installing a traveling crane driving piece. The utility model has the remarkable effects of facilitating factory manufacture, reducing production cost and improving production efficiency; the personnel of being convenient for ride and stride, can promote user experience.

Description

Bicycle frame

Technical Field

The utility model relates to a vehicle, in particular to a bicycle.

Background

The frame of a bicycle (including a manual bicycle and an electric power-assisted bicycle) is an important part for supporting and connecting. The traditional bicycle frame is formed by welding steel pipes or aluminum alloy sections, so that the welding process requirements on pipe fittings/sections are high in order to ensure the strength of the bicycle frame, and the production cost and the efficiency are not advantageous.

The magnesium alloy die casting has the advantages of quick forming and light weight. Based on this, a die-cast magnesium alloy frame has been proposed, but the structure of the die-cast magnesium alloy frame adopts a traditional triangular frame structure, which is not friendly for ladies and children to ride.

Researchers have accumulated a lot of experience in long-term research of car seats, have mastered car seat frame designs, and have proposed numerous patent achievements during the supply of various car accessory manufacturers. The bicycle frame is correspondingly improved by combining the prior experience, so that the bicycle frame is convenient to manufacture and ride.

Disclosure of Invention

The utility model provides a bicycle frame which is convenient for factory manufacture and riding by personnel, and adopts the main technical scheme that:

the utility model provides a bicycle frame, includes down the pipe, and this down pipe is the low slope setting in front of high back, and the front end of this down pipe is used for the connector pipe, the rear end of down pipe is connected with driving piece mounting box, its key lies in:

the lower pipe is provided with a first slot, and the opening of the first slot faces downwards;

the driving piece mounting box is provided with a second slot, and the opening of the second slot faces downwards;

the driving piece installation box is used for installing a traveling crane driving piece.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model at a first perspective;

FIG. 2 is a schematic diagram of the structure of the present utility model at a second perspective view;

FIG. 3 is a schematic plan view of the present utility model;

FIG. 4 is a bottom view of FIG. 1;

fig. 5 is a schematic perspective view of a bicycle frame with a carrying handle 6.

Detailed Description

The utility model is further described below with reference to examples and figures.

As shown in fig. 1, 2, 3 and 4, a bicycle frame comprises a lower tube 1, wherein the lower tube 1 is arranged in a front-high and rear-low inclined manner, the front end of the lower tube 1 is used for connecting a head tube 2, and the rear end of the lower tube 1 is connected with a driving piece mounting box 3;

the lower pipe 1 is provided with a first slot, and the opening of the first slot faces downwards;

the driving piece installation box 3 is provided with a second slot, and the opening of the second slot faces downwards;

the driving piece mounting box 3 is used for mounting a driving piece;

the lower tube 1 and the driving piece installation box 3 are integrally formed.

The more preferable technical scheme is as follows: the lower pipe 1 and the driving piece installation box 3 are integrally formed through die casting, and the first slotting and the second slotting with downward openings are convenient to demould.

The structure can basically realize the purposes of quick manufacture and convenient riding.

The front and rear directions are defined in terms of the front and rear directions of the bicycle.

Another specific embodiment is based on the above structure: the first slot is arranged along the length direction of the lower pipe 1; the rear end of the first slot is communicated with the second slot.

Another specific embodiment is based on the above structure: the top of the driver mounting box 3 is connected with an upwardly extending saddle tube 5. The saddle tube 5 is used for connecting a bicycle saddle.

In order to improve the strength, the inner wall of the second slot is provided with a reinforcing rib; the outer wall of the driving piece mounting box 3 can be provided with a reinforcing rib; reinforcing ribs are also arranged at the connection and conversion positions of the lower pipe 1 and the driving piece installation box 3; the connection and conversion part of the driving piece installation box 3 and the saddle tube 5 is also provided with a reinforcing rib; the connection conversion between the lower pipe 1 and the head pipe 2 is provided with a reinforced metal plate.

Another specific embodiment is based on the above structure: the head pipe 2 and the lower pipe 1 are integrally formed by die casting; and/or the driver mounting box 3 and the seat tube 5 are integrally die-cast.

Another specific embodiment is based on the above structure: the middle part of the top position of the driving piece installation box 3 is sunken downwards to form a strengthening area. The function of the device is to increase the area of the top of the driving piece mounting box 3, and the top of the driving piece mounting box 3 is bent due to the concave, so as to form reinforcement.

Another specific embodiment is based on the above structure: the driver mounting box 3 and the seat tube 5 are connected with a rear fork 4 extending rearward. The more preferable technical scheme is as follows: the driving piece mounting box 3, the saddle tube 5 and the rear fork 4 are integrally die-cast. The connection and conversion part of the saddle tube 5 and the rear fork 4 is provided with a reinforced sheet metal.

Another specific embodiment is based on the above structure: the front end of the down tube 1 is slightly bent downward and then connected with the head tube 2.

In another specific embodiment, based on the above structure, the following are more detailed: the lower pipe 1 comprises an inclined top plate and two inclined side plates which are arranged opposite to each other, wherein the upper edges of the two inclined side plates are respectively connected with the two side edges of the inclined top plate, and the inclined top plate and the two inclined side plates form a groove-shaped structure with downward openings;

based on the above structure, more details are: the driving piece mounting box 3 comprises a box top plate, two box side plates which are arranged opposite to each other, and a box rear plate; the upper edges of the two box body side plates are respectively connected with the side edges of the box body top plate, the box body top plate and the two box body side plates form a groove-shaped structure with downward openings, and the box body rear plate is connected with the rear side edges of the box body top plate and the box body side plates and is used for closing the opening of the second groove facing the rear of the bicycle body;

the two inclined side plates are in one-to-one correspondence with the two box body side plates, the inclined side plates are connected with the corresponding box body side plates, and the inclined top plate is connected with the box body top plate.

As the technical scheme is further described, the inner wall and the outer wall of the side plate of the box body are respectively provided with the reinforcing ribs; the first slot of the lower pipe 1 is internally provided with the reinforced metal plate which connects the inclined top plate, the inclined side plate and the head pipe 2 into a whole.

For traditional bicycle, only need consider set up on the driving piece installation box 3 be used for installing the hole of crank can, the box body volume of driving piece installation box 3 is less this moment.

For electric/electric power-assisted manual bicycles, the travelling driving piece is a driving motor. The size and shape of the driving piece mounting box 3 are determined by considering the shape and the size of the motor, and the box body of the driving piece mounting box 3 is large; wherein the first slot is configured to receive a battery and the second slot is configured to receive a motor. Correspondingly, a motor mounting hole is formed in the notch position of the second slot and used for aligning the motor mounting hole with a connecting hole on the motor, and the motor mounting hole and the connecting hole are connected stably through bolts.

As a specific material, a magnesium alloy may be considered. Because the magnesium alloy material has the advantages of good strength, light weight and the like, compared with a steel pipe welded frame, the magnesium alloy die-casting frame can reduce the weight of the vehicle body by 40 percent, and if an integral die-casting process is adopted, the stress uniformity of the frame is better.

A further embodiment is: particularly, on the down tube 1 and the driving member mounting box 3, various holes are also arranged according to the configuration requirements of manufacturers, such as the type, the model and other factors of the purchased battery, the motor, and the like, and the holes are used for being connected and fixed or penetrating through the wire harness. These designs are conventional to those skilled in the art.

As another specific real-time approach is: in order to facilitate the lifting of the rider, a carrying handle 6 is arranged at the top of the driving piece mounting box 3, and the carrying handle 6 is positioned above the strengthening area, and more preferably, the carrying handle 6 is an arc-shaped handle.

The beneficial effects are that: by adopting the technical scheme of the utility model, the manufacturing in factories is convenient, the assembly is simple and convenient, the safety performance of the frame is improved, the production cost can be reduced, and the production efficiency is improved; the personnel of being convenient for ride and stride, can promote user experience.

Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a bicycle frame, includes down tube (1), this down tube (1) is preceding high low slope setting, and the front end of this down tube (1) is used for connector pipe (2), the rear end of down tube (1) is connected with driving piece mounting box (3), its characterized in that:

the lower pipe (1) is provided with a first slot, and the opening of the first slot faces downwards;

the driving piece mounting box (3) is provided with a second slot, and the opening of the second slot faces downwards;

the driving piece mounting box (3) is used for mounting a driving piece;

the lower pipe (1) and the driving piece mounting box (3) are integrally formed.

2. The bicycle frame according to claim 1, wherein: the first slot is arranged along the length direction of the lower pipe (1);

the rear end of the first slot is communicated with the second slot.

3. The bicycle frame according to claim 1 or 2, characterized in that: the top of the driving piece mounting box (3) is connected with a saddle tube (5) extending upwards.

4. The bicycle frame according to claim 1 or 2, characterized in that: the inner wall of the second slot is provided with a reinforcing rib.

5. A bicycle frame according to claim 3, wherein: the head pipe (2) and the lower pipe (1) are integrally formed by die casting, and the driving piece mounting box (3) and the saddle pipe (5) are integrally formed by die casting.

6. The bicycle frame according to claim 1 or 2, characterized in that: the top of the driving piece mounting box (3) is provided with a portable handle (6).

7. The bicycle frame according to claim 1 or 2, characterized in that: the driving piece is a driving motor, the first slot is used for accommodating a battery, and the second slot is used for accommodating the motor.

8. The bicycle frame according to claim 1 or 2, characterized in that: and a motor mounting hole is formed in the notch position of the second slot.

9. The bicycle frame according to claim 1 or 2, characterized in that: the middle part of the top position of the driving piece mounting box (3) is sunken downwards to form a strengthening area.

10. A bicycle frame according to claim 3, wherein: the driving piece mounting box (3) and the saddle tube (5) are connected with a rear fork (4) extending backwards.