WO2022242208A1

WO2022242208A1 - Folding linkage bicycle frame

Info

Publication number: WO2022242208A1
Application number: PCT/CN2022/072204
Authority: WO
Inventors: 邱树元
Original assignee: 邱树元
Priority date: 2021-05-19
Filing date: 2022-01-16
Publication date: 2022-11-24
Also published as: CN220865569U

Abstract

A folding linkage bicycle frame. A handle bar is rotatably hinged to the top end of an upper tube; an upper tube connecting piece can be hinged, such that said piece can rotate forward and backward, to a fifth connecting part of a steering shaft connecting kit; the rear end of the upper tube is hinged above the upper tube connecting piece; the rear end of a lower tube is hinged below the steering shaft connecting kit; the front end of the upper tube is hinged to a second steering shaft, and the front end of the lower tube is hinged to a first steering shaft; a first movable connecting piece and a second movable connecting piece intersect in a cross shape and are hinged to the steering shaft connecting kit and a rear fork; the rear fork is hinged to a rear wheel at a split part; a seat post connecting part below a seat post is hinged to a third connecting part of the steering shaft connecting kit; the fifth connecting part and a first connecting part of the steering shaft connecting kit are linked by means of a linkage apparatus to lock the frame; a third connecting part and a fourth connecting part of the rear fork are linked by means of the linkage apparatus to lock the frame; the second steering shaft below the handle bar is hinged to the first steering shaft at the top end of a front fork; a front wheel is hinged below the front fork; a quick-release screw handle is hinged above a hinging part of the upper tube to lock the frame; and a drive apparatus is hinged on the first movable connecting piece.

Description

A folding linkage bicycle rack

technical field

The invention belongs to bicycles in vehicles, in particular to a folding linkage bicycle frame.

Background technique

In the existing technology, folding bicycles are recognized by the public for their small size, flexibility, and stable riding. However, due to their large volume after folding, their structures are relatively complicated, and they take up a lot of space when they are stored. After folding, they do not look very regular. The volume is too large during transportation, and the transportation cost is similar to ordinary unfolded bicycles. The folding steps of existing folding bicycles in daily use are relatively cumbersome, and the folding time is long. The locks need to be broken one by one. After folding, it takes time to carry And laborious.

Therefore, a bicycle rack is designed which is simple in structure, easy to carry, safe and stable, regular in shape after folding and convenient for storage and storage.

Contents of the invention

The object of the present invention is to overcome the above-mentioned technical deficiencies and provide a folding linkage bicycle frame.

The technical problem solved by the invention adopts the technical scheme as follows: a folding linkage bicycle frame, including a handle bar, a steering shaft connection kit, an upper tube connector, an upper tube, a lower tube, a movable connector 1, a movable connector 2, a rear Fork, seat column, linkage device, front fork, driving device; its characteristics:

The second steering shaft is fixedly connected to the lower part of the handlebar, and the handlebar is rotatably hinged above the front end of the upper tube through the second steering shaft to control steering. The hinge part of the connector, the rear end of the upper tube is hinged with the upper tube hinge part on the upper tube connector, a quick-release screw handle is hinged above the hinge part of the upper tube, and a steering shaft 1 is fixedly connected above the front fork, A rotatable hinged front fork passes through the steering shaft below the front end of the down tube, the front wheel is hinged under the front fork, the rear end of the down tube is hinged to the down tube hinge on the steering shaft connection kit, and the steering shaft connection kit Connecting part one on the hinge hinges one end of the movable connector one, and the other end of the movable connector one hinges the connecting part four on the rear fork, and the connecting part three on the rear fork is hinged with one end of the movable connector two again, and the movable connector two The other end of the steering shaft is hinged to the connecting part two on the steering shaft connecting kit, the rear wheel is hinged on the rear fork, the connecting part five and the connecting part one are hinged to lock the frame through a linkage device, and the seat column The connecting part of the seat column at the bottom is hinged with the connecting part three, and the connecting part three and the connecting part four are interlocked to lock the frame through a linkage device, and the steering shaft two under the handlebar is hinged with the steering shaft one at the top of the front fork , the movable link is fixedly connected to the driving device under a rear end.

The movable connector one and the movable connector twenty cross hinged steering shaft are connected to the set and the rear fork for at least one cycle.

The linkage device is hinged by the linkage hinge part fixedly connected on the upper pipe connector, the linkage hinge part two fixedly connected with the movable connector through the connecting rod, and the linkage hinge part below the seat column The third is hinged with the linkage hinge part four on the movable connector one through the connecting rod.

The linkage device is linked, for example, a gear linkage, a connecting rod linkage, and a guide piece.

The driving device is, for example, a sprocket chain drive, a belt drive, a motor drive, and a transmission shaft drive.

The connection hole, the hinge hole and the connection part are hinged by a shaft.

The beneficial effect of the present invention is that: the main body of the vehicle frame is mainly locked by the interlocking engagement of the linkage device. A visible quick release screw locks the frame, the quick release screw is the last lock, the first lock is the linkage device and the main frame to lock the frame, the second lock is the upper tube and the lower tube Simultaneously rotate 90 degrees to one side, and at the same time, the handlebar lever drives the steering shaft 1 and the steering shaft 2 to rotate 90 degrees at the front end of the upper tube and the lower tube, and the hinge shaft of the steering shaft 1 and the steering shaft 2 is on the same axis as the connecting part 5 At this time, the second lock can be opened, and only then can the frame be folded. The hinged part of the upper tube and the hinged part of the lower tube can directly hinge the second steering shaft and the first steering shaft. The hinged connection between the upper tube and the lower tube is to extend The overall length of the frame can not only shorten the size of the whole car when folded, but also give way to the position of the front wheel when the upper tube and the lower tube are rotated to one side, so that the rear wheel can be inserted easily. The folding action of the whole car is coherent and effortless. After folding The shape is regular, suitable for all kinds of people, especially for those who have cars and those who go to work and school. The structure is reasonable and simple, the production cost is low, the floor space is small, safe and stable, and it meets the needs of consumers, as shown in the figure.

Description of drawings

The following will be described in detail with embodiments in conjunction with the accompanying drawings.

Figure 1 is a front view.

Figure 2 is a folded diagram.

Figure 3 is a hinged view of the linkage device.

Figure 4 is an analysis diagram of the upper tube and the lower tube driving the front wheel to rotate to one side.

Fig. 5 is an analysis diagram of the steering shaft connection kit.

Figure 6 is an exploded view of the upper tube connector and the quick release screw handle.

Figure 7 is an analysis diagram of the front fork.

Figure 8 is an analysis diagram of the rear fork.

Fig. 9 is an analysis diagram of the handlebar.

Fig. 10 is an analysis diagram of the seat column.

Figure 11 is an analytical view of the connecting rod.

Fig. 12 is an analysis diagram of the movable connector.

In the figure 1-upper tube connector, 1-1-hinge part of upper tube connector, 1-2-link hinge part 1, 1-3-upper tube hinge part, 2-steering shaft connection kit, 2-1- Connection part 1, 2-2-Connection part 2, 2-3-Connection part 5, 2-4-Down tube hinge part, 3-Active connection part 2, 4-Rear fork, 4-1-Connection part 3, 4 -2-connection part 4, 5-front fork, 5-1-steering shaft 1, 6-seat column, 6-1-connection part of seat column, 6-2-linkage hinge part 3, 7-movable connection Part 1, 7-1-Linkage hinge part 2, 7-2-Linkage hinge part 4, 8-Drive device, 9-Connecting rod, 10-Handle bar, 10-1-Steering shaft 2, 11-Car Hinge, 12-seat, 13-upper tube, 14-lower tube, 15-quick release screw, 19-front wheel, 20-rear wheel.

Detailed ways

The embodiments further illustrate the present invention with reference to the accompanying drawings, which do not constitute a limitation to the protection scope of the invention.

A folding linkage bicycle frame includes a linkage device, a steering shaft connection kit 2, a movable connector 2 3, a movable connector 1 7, a rear fork 4, a seat post 6, an upper tube connector 1, a front fork 5, and a handle bar 10. Driving device 8;

With reference to accompanying drawing 5, described steering shaft connection kit 2 is fixedly connected with connection part one 2-1, connection part two 2-2, connection part five 2-3, lower tube hinge part 2-4, and described connection part one 2 -1 is above the steering shaft connecting kit 2, connecting part 2 2-2 is below the steering shaft connecting kit 2, connecting part 5 2-3 is in front of connecting part 1 2-1, and the front and bottom of the steering shaft connecting kit 2 are fixedly connected with the Tube hinges 2-4.

Referring to accompanying drawing 6, the top of the upper tube connector 1 is fixedly connected with the upper tube hinge part 1-3, and the top of the upper tube hinge part 1-3 is horizontally hinged with the quick release screw handle 15, and the front and lower part of the upper tube connector 1 is fixedly connected There is an upper tube connector hinge part 1-1, and the upper tube connector 1 is fixedly connected with a linkage hinge part one 1-2 at the rear and lower side.

With reference to accompanying drawing 1 described upper pipe front end is fixedly connected with the connecting hole of hinged steering shaft two 10-1, and the rear end is fixedly connected with the connecting hole of hinged upper pipe hinge portion 1-3.

The front end of the lower tube 1 is provided with a connecting hole for hinged steering shaft 1 5-1, and the rear end is provided with a connecting hole for hinged lower tube hinge 2-4.

Referring to the accompanying drawing 12, above the front end of the movable connector one 7, there is a connecting hole hinged with the connecting part one 2-1, and the lower part of the movable connector one 7 front end is fixedly connected with an interlocking hinge part two 7-1. The rear end of the movable connector one 7 is fixedly connected with a connecting hole, and above the rear end of the movable connector one 7 is fixedly connected with a linkage hinge part four 7-2.

Referring to accompanying

drawings

1, 2, 3, the front end of the movable connector 2 3 is provided with a connecting hole hinged with the connecting part 2 2-2, and the rear end of the movable connector 2 3 is provided with a hinged hole with the connecting part 3 4-1. connection hole.

With reference to accompanying drawing 10 described vehicle seat column 6 tops are provided with vehicle seat 12, vehicle seat column 6 below is fixedly connected with vehicle seat column connecting portion 6-1, described with vehicle seat column connecting portion 6-1 below vehicle seat column 6 1. The rear is fixedly connected with a linkage hinge part 3 6-2.

With reference to accompanying drawing 8 described rear fork 4 front ends tops are fixedly connected with connecting part three 4-1, rear fork 4 front ends below are fixedly connected with connecting parts four 4-2, and rear fork 4 rear ends are hinged trailing wheel 20.

With reference to accompanying drawing 9 described handlebar bar 10 tops are provided with handlebar articulation part 11, handlebar bar 10 below is fixedly connected with steering shaft two 10-1, and the bottom of described steering shaft two 10-1 is fixedly connected with steering shaft A 5-1 hinged connection hole.

With reference to the hinged front wheel 19 below the front fork 5 described in accompanying drawing 7, the top of the front fork 5 is fixedly connected with a steering shaft one 5-1, and the top of the steering shaft one 5-1 is fixedly connected with a steering shaft two 10-1 hinged. connection hole.

With reference to accompanying drawing 11 described connecting rod 9 two ends are provided with the connection hole that is hinged with interlock hinge part one 1-2 and interlock hinge part two 7-1.

With reference to the movable connector 1 described in accompanying drawing 1, it is fixedly connected to the driving device 8 under the rear end of 7;

With reference to accompanying drawing 1 described driving device 8: such as sprocket chain drive, belt drive, motor drive, power transmission shaft drive.

With reference to accompanying drawing 1, the connecting part-2-1 on the steering shaft connection kit 2 is hinged to the front end connecting hole of the movable connector-7, and the rear end connecting hole of the movable connecting part-7 is hinged to the connecting part four-4 on the rear fork 4 -2, the connection part 3 4-1 on the rear fork 4 is hinged with the rear end connection hole of the movable connection part 2 3, and the front end connection hole of the movable connection part 2 3 is connected with the connection part 2 2- on the steering shaft connection kit 2 2 hinged.

With reference to accompanying drawing 1 described movable link one 7, movable link two 3 cross-hinged steering shaft connection kit 2 and rear fork 4 hinge at least one cycle, described at least one hinged cycle is exactly movable link one 7, movable link Two 3 are respectively hinged once with the steering shaft connection kit 2 and the rear fork 4, and the articulation angle is variable according to folding between the movable connector one 7 and the movable connector two 3 and the steering shaft connection kit 2 and the rear fork 4.

With reference to accompanying drawing 1 described vehicle seat column 6 is through vehicle seat column connection part 6-1 articulated connection part 3 4-1, and the rear end of movable joint 2 3 is hinged connection part 3 4-1 simultaneously, and the vehicle seat column 6 below Linkage hinge part three 6-2 is hinged linkage link part four 7-2 by connecting rod 9.

Referring to accompanying

drawings

1, 2, and 6, the quick-release screw handle 15 hinged above the upper tube hinge 1-3 is the only visible locking member for locking the frame. The quick-release screw handle 15 is connected to the upper tube hinge 1 -3 constitutes the last lock for locking the frame, the quick release screw handle 15 is rotated to the top of the upper tube 13 in front, the front end of the quick release screw handle 15 can fix the upper tube 13, and the quick release screw handle 15 is used to fasten it The tube 13 not only locks the gap between the upper tube hinge 1-3 and the upper tube 13 but also prevents the upper tube 13 from rotating, and the entire frame is locked. The rear end of the quick release screw handle 15 is an eccentric shaft It is often used to adjust the height of the bicycle seat, handlebar adjustment and frame locking.

Referring to the accompanying drawing 3, the linkage device is the linkage hinge part one 1-2 fixedly connected to the rear and lower part of the upper pipe connector 1 through the connecting rod 9 to hinge the linkage hinge part two 7-1 below the front end of the movable connector one 7, The linkage hinge part 3 6-2 below the seat column 6 forms a linkage device through the linkage hinge part 4 7-2 at the rear end of the hinge movable connector 1 7 through the connecting rod;

The linkage device: such as gear linkage, connecting rod linkage, guide piece.

With reference to accompanying drawing 1, 2 described above upper pipe 13 front end hinged steering shaft two 10-1, above steering shaft two 10-1 fixedly connect handlebar bar 10, down tube 14 front ends below hinged steering shaft one 5-1, steering shaft The bottom of one 5-1 is fixedly connected to the front fork 5, and the connecting hole above the steering shaft one 5-1 is hinged with the connecting hole below the steering shaft two 10-1. The whole steering shaft is divided into two sections, and the two sections of the steering shaft The hinge is a folding point, and the first steering shaft 5-1 and the second steering shaft 10-1 are hinged straightly. When folding, the second steering shaft 10-1 and the first steering shaft 5-1 are on the upper tube 13 and the lower tube 14 Rotate 90 degrees, the handle bar 10 rotates forward until it is close to the front wheel 19 when said folding.

Referring to accompanying

drawings

1 and 4, when folding, the upper tube 13 and the lower tube 14 rotate 90 degrees to one side at the same time, and the handle bar 10 drives the front fork 5 to rotate 90 degrees at the front ends of the upper tube 13 and the lower tube 14. When the connecting hole above the steering shaft 1 5-1 and the connecting hole below the steering shaft 2 10-1 are on the same axis as the connecting part 5 2-3, at the same time, the upper pipe connector 1 and the steering shaft 10-1 drive The handle bar 10 can rotate the linkage frame forward.

With reference to accompanying drawing 1, the connecting part five 2-3 on the steering shaft connection kit 2 is horizontally hinged to the upper pipe connector hinge part 1-1 on the upper pipe connector 1, and the upper pipe on the upper pipe connector 1 is hinged Part 1-3 hinges the rear end of the upper tube 13, and the lower tube hinge part 2-4 on the steering shaft connection kit 2 hinges the rear end of the lower tube 14. In the unfolded state, the upper tube hinge part 1-3 and the lower tube hinge part 2-4 Hinge The upper tube 13 and the lower tube 14 are on the same axis, so that the upper tube 13 and the lower tube 14 can rotate 90 degrees in one direction at the same time.

Referring to the accompanying drawing 1, the upper tube connector 1 can rotate forward on the steering shaft connection kit 2 through the upper tube connector hinge 1-1, and the rotation of the upper tube hinge 1-3 on the upper tube connector 1 is controlled. Lock the second lock of the vehicle frame. The second lock is that the front ends of the lower tube 14 and the upper tube 13 are hinged through the steering shaft 1 5-1 and the steering shaft 2 10-1, and the rear end of the upper tube 13 is hinged on the On the hinged part 1-3 of the upper tube, the rear end of the lower tube 14 is hinged on the hinged part 2-4 of the lower tube. The lower tube 14 is longitudinally hinged and can only rotate laterally to both sides of the frame. The upper tube in the unfolded state 13. The lower tube 14 is longitudinally hinged with the steering shaft 2, the steering shaft 1, the upper tube hinge part 1-3, and the lower tube hinge part 2-4. The upper tube hinge part 1-3 on the upper tube connector 1 is The upper tube 13 is hinged longitudinally to limit the rotation. The limitation of the rotation of the upper tube hinge part 1-3 means that all the connecting parts of the entire vehicle frame no longer rotate. The device linkage locks the vehicle frame, and the linkage device hinged on the connecting part three 4-1 and the connecting part four 4-2 locks the vehicle frame to form the second lock. The connecting part five 2-3 and the connecting part one 2 -1, connecting part 2 2-2, connecting part 3 4-1, connecting part 4 4-2 are hinged as the first lock composed of movable connection and linkage device, and the movable connection is the mutual rotatable linkage .

With reference to accompanying drawing 1,2,4 described upper pipe connector 1 is hinged on the connecting part five 2-3, upper pipe hinged part 1-3 on the upper pipe connector 1, lower pipe hinged part 2-4 and steering shaft Two 10-1, the steering shaft one 5-1 is hinged through the upper tube 13 and the lower tube 14, and the upper tube hinge part 1-3 and the lower tube hinge part 2-4 can directly hinge the steering shaft two 10-1, the steering shaft 1-5-1, the hinged connection between the upper tube 13 and the lower tube 14 is to increase the overall length of the vehicle frame and reduce the overall length of the vehicle frame when folded. When the upper tube 13 and the lower tube 14 are rotated, the front wheel 19 The position is released to facilitate the insertion of the rear wheel 20, and at this time the vehicle frame can be linked and folded.

The connecting hole, the hinged hole and the connecting portion are hinged by a hinge shaft.

Referring to the accompanying

drawings

1, 2 and 4, the working principle of the invention is: under the normal bicycle state, open the quick release screw handle 15 to unlock the vehicle frame, pull the handlebar hinge 11 to drive the front wheel 19 to rotate the upper tube 13 and the lower Pipe 14 to 90 degrees, the handle bar 10 also rotates 90 degrees at the front ends of the upper pipe 13 and the lower pipe 14, while the hinge point of the steering shaft one 5-1 and the steering shaft two 10-1 and the joint five 2-3 are in the On the same axis, at this time the second lock has been opened, rotate the handlebar 10 in the direction of the front wheel 19 to link the vehicle frame until the two wheels are close together in the middle, rotate until the front of the handlebar 10 is close to the front wheel 19, and the seat column 6 The direction of the rear wheel 20 is rotated to the rear of the vehicle seat 12 close to the rear wheel 20, and the folding is completed. If you want to restore the riding state, you need to open it in the order of folding.

Claims

A folding linkage bicycle frame, characterized in that it includes a linkage device, a steering shaft connection kit (2), and the steering shaft connection kit (2) is fixedly connected with a downtube hinge (2-4) and a connection part five ( 2-3), the connection part one (2-1) on the steering shaft connection kit (2) hinges one end of the movable connection part one (7), and the other end of the movable connection part one (7) hinges the connection part four ( 4-2), the connecting part three (4-1) is hinged to one end of the movable connecting part two (3), and the other end of the movable connecting part two (3) is hinged to the connecting part two (2-2).
A folding linkage bicycle frame according to claim 1, characterized in that the linkage device is a linkage device hinged between the connecting part five (2-3) and the connecting part one (2-1) to lock the frame , the linkage device hinged between the third connecting part (4-1) and the fourth connecting part (4-2) locks the vehicle frame.
A folding linkage bicycle frame according to claim 1, characterized in that, the upper tube hinge part (1-3) is hinged to the joint part five (2-3) through the upper tube connector hinge part (1-1), The upper tube hinge (1-3), the lower tube hinge (2-4), the steering shaft two (10-1), the steering shaft one (5-1) pass through the upper tube (13) and the lower tube (14 ) hinged.
A folding linkage bicycle frame according to claim 3, characterized in that, the hinged connection between the upper tube (13) and the lower tube (14) is for the upper tube (13) and the lower tube (14) in the unfolded state The length of the vehicle frame can be increased, and the length of the vehicle frame can be reduced by rotating the upper tube (13) and the lower tube (14) to one side when folding, and can also rotate the upper tube (13) and the lower tube (14) to one side Make way for the position of front-wheel (19) when folding, make things convenient for rear-wheel (20) to insert when folding.
A folding linkage bicycle frame according to claim 1, characterized in that, the first movable link (7), the second movable link (3) cross hinged steering shaft connection kit (2) and the rear fork (4) Articulate at least one loop.
A folding linkage bicycle frame according to claims 1 and 3, characterized in that, the hinge point of the steering shaft one (5-1) and the steering shaft two (10-1) and the connecting part five (2-3) On the same axis when folded.
According to claim 1 and claim 2, a folding linkage bicycle frame is characterized in that the hinge point of the whole frame is movably connected with the linkage device to form the first lock.
A folding linkage bicycle frame according to claim 3, characterized in that, when folded, the upper tube hinge (1-3) can rotate forward on the steering shaft connection kit (2), and the control upper tube hinge Part (1-3) rotation is exactly the second lock of locking vehicle frame.
The folding linkage bicycle frame according to claim 8, characterized in that the quick release screw handle (15) is hinged to the upper tube hinge (1-3) to form the last lock.
A folding linkage bicycle frame according to claim 1, characterized in that the driving device (8) is fixedly connected under the rear end of the first movable link (7).