WO2012037798A1

WO2012037798A1 - Foldable bicycle

Info

Publication number: WO2012037798A1
Application number: PCT/CN2011/071374
Authority: WO
Inventors: 韩德玮; 郑汉信; 莫怡平
Original assignee: 大行科技(深圳)有限公司
Priority date: 2010-09-25
Filing date: 2011-02-28
Publication date: 2012-03-29
Also published as: CN101973339A

Abstract

A foldable bicycle has a frame (1) with three or more frame sections hinged to each other, each hinged shaft (16,17) of which is transversely arranged. An angle is formed between the projection of the hinged shaft axis in the horizontal plane and that of the back wheel axis in the horizontal plane. The structure of the foldable bicycle is simple and practical, thereby minimizing the size of the folded bicycle.

Description

Folding bicycle

Technical field

The invention relates to a folding bicycle, in particular to a folding bicycle which can be folded three times. Background technique

At present, folding bicycles are increasingly favored by people because of their small storage space and convenient carrying. It is common practice to place a folder on the frame and divide the frame into front and rear sections. There are also some three-segment folding bicycles. For example, the Chinese Patent Application No. CN200320110952.6 discloses a "multi-function three-fold traveling wagon" whose car beam is divided into three sections: front, middle and rear, with two folding structures. -2 and 1-3, both structures have hinge axes arranged in the vertical direction. During folding, as shown in Figures 2 and 3, the frame rotates in the horizontal plane. After folding, the front and rear wheels are parallel, and the middle section of the vehicle beam is vertical. In front of and behind the beam, although this can save a certain amount of space, if the middle section of the beam is too long, the lateral width of the bicycle will be too large; if the middle section of the beam is too short, the bicycle will be folded. The overall length is too long, and the effect is close to the two-fold car, which does not have the effect of reducing the space.

The Chinese patent application No. CN200520122005.8 discloses a "three-fold bicycle", the vehicle beam is divided into three sections and has two folding joints, and the hinge shaft of the folding joint is perpendicular to the longitudinal plane of the frame, that is, the folding joint The hinge axis is axially parallel to the axial direction of the bicycle rear wheel, and the two hinge axes 2-1 and 2-7 are respectively located on the opposite sides of the vehicle beam. After folding, as shown in Figures 5, 7 and 8, the front and rear wheels are close together. In comparison, the overall length is reduced, but in this folding mode, the front and rear lengths of the bicycle after folding are at least as long as two wheel diameters, which are not minimized. Summary of the invention

SUMMARY OF THE INVENTION The present invention is directed to a folding bicycle which is simple in construction and practical in that the volume of the bicycle after folding can be minimized.

The technical solution adopted by the invention to solve the technical problem is: a folding bicycle, the vehicle beam has three or more sections, each section of the vehicle beam is hingedly connected, the hinge shafts are laterally disposed, the axis of the hinge shaft and the rear wheel axle axis The projection in the horizontal plane has an included angle.

The vehicle beam has a front section, a middle section and a rear section, and a transverse hinge shaft is arranged between the front section and the middle section, and a transverse hinge shaft is arranged between the middle section and the rear section.

The hinge shaft is disposed on one side of the vehicle beam, and a locking device is disposed on an opposite side of the hinge shaft.

A connector capable of participating in folding is provided, the front end of the connecting piece is connected to the front part of the beam, and the rear end is connected to the middle tube or the reinforcing tube. The connector is a wire or a multi-segment tube, rod or chain that is connected in series. The auxiliary beam is provided on the lower side of the vehicle beam, and the auxiliary beam has a fixed section and a movable section. A locking device is arranged between the front end of the movable section and the end of the fixed section. After the locking device is opened, the movable section can be rotated.

In the folding bicycle of the present invention, the vehicle beam is arranged in three stages, and the hinge shaft is disposed laterally and at an angle with the rear wheel axle, and during the turning process, the misalignment is formed and the folded volume is further reduced. In the case of a sub-beam, not only is it easy to fold, but it also has a higher strength. DRAWINGS

Figure 1 is a perspective view showing the unfolded state of the folding bicycle of the present invention;

Figure 2 is a perspective view showing the folded intermediate state of the folding bicycle of the present invention;

Figure 3 is a front elevational view showing the folding bicycle of the present invention in a folded state;

Figure 4 is a perspective view showing the folded state of the folding bicycle of the present invention;

Figure 5 is a schematic plan view of the folding bicycle hinge joint hinge of the present invention in a horizontal plane;

Figure 6 is a front elevational view of a second embodiment of the folding bicycle of the present invention;

Figure 7 is another schematic view of a second embodiment of the folding bicycle of the present invention;

Figure 8 is a perspective view showing the folded intermediate state of the second embodiment of the folding bicycle of the present invention;

Figure 9 is a perspective view showing the folded state of the second embodiment of the folding bicycle of the present invention;

Figure 10 is a front elevational view of a third embodiment of the folding bicycle of the present invention;

Figure 11 is a front elevational view of a fourth embodiment of the folding bicycle of the present invention;

Figure 12 is a perspective view showing the folded state of the fourth embodiment of the folding bicycle of the present invention. detailed description

The folding bicycle of the present invention will be further described in detail below with reference to the accompanying drawings.

The first embodiment, as shown in FIG. 1, has a vehicle beam 1 in the middle of the folding bicycle, and the vehicle beam 1 includes a front section 11, a middle section 12, and a rear section 13. A folding joint is disposed between the three sections of the vehicle beam, and the folding joint has one side The hinge shaft has a locking device on the other side, a folding joint 14 is arranged between the front section 11 and the middle section 12, and a folding joint 15 is arranged between the rear section 13 and the middle section 12. The folding joint 14 has a hinge shaft 16, and the folding joint 15 has a hinge shaft 17, which is disposed on the lower side of the vehicle beam. A folding joint is installed between the standpipe 2 at the front end of the bicycle and the front fork, and the standpipe 2 is foldable.

As shown in Fig. 5, the axis I is the front and rear direction axis of the bicycle, that is, the longitudinal axis, the axis of the rear wheel shaft 5 is perpendicular to the axis I, and the axis of the hinge axis of the folding joint is not perpendicular to the axis I. The hinge shaft 16 of the folding joint 14 and the hinge shaft 17 of the folding joint 15 are all disposed laterally, and the axis of the hinge shaft 16 has a certain angle with the projection of the rear wheel axle axis in the horizontal plane, and the hinge shaft 17 The projection of the axis and the axis of the rear wheel in the horizontal plane has a certain angle, so that during the folding process, the front and rear wheels can be misaligned to minimize the folded volume.

Figure 2, 3, 4, this is a schematic diagram of the folding process of the folding bicycle. When folding, the locking device on the folding joint can be opened first, and the middle section 12 of the beam is folded downward, and the lower side of the front part of the middle section 12 of the beam will bear against the outer wall of the five-way pipe 3, thereby restricting further rotation of the middle section 12. A positioning rubber pad 31 is disposed outside the five-way pipe 3 to buffer the collision between the middle section 12 and the five-way pipe 3 during the folding process. At this time, the middle section 12 has been limited, and the next step is to further rotate the front section 11 of the vehicle beam in the direction of rotation of the middle section 12, and finally the front and rear wheels of the bicycle are substantially aligned. At this time, the folded bicycle has a width of only two wheels, and the length has only one wheel diameter plus a part of the length of the beam, so that the folded volume is very small.

In order to fix the folded front and rear wheels, a fixing device 4 is provided between the two. A first fixing member is disposed on the rear fork, and a second fixing member is disposed on the front fork or the vertical tube 2, and the first fixing member is locked in cooperation with the position of the second fixing member. For example, the fixing device 4 is a magnetic buckle, and when the front and rear wheels are close together, the first fixing member and the second fixing member are fixed by magnetic attraction; or the first fixing member and the second fixing member are mating with each other. With the sub-set, the mother and the sub-set can be locked or loosened.

In the second embodiment, as shown in FIG. 6 and 7, the folding bicycle has a vehicle beam in the middle thereof, and the vehicle beam includes a front section, a middle section and a rear section, and the three sections of the vehicle beam are hingedly connected, and a hinge shaft 16 is disposed between the front section and the middle section of the vehicle beam. A hinge shaft 17 is disposed between the middle portion and the rear portion of the vehicle beam. The lower side of the vehicle beam is also provided with a sub-beam obliquely, and the sub-beam is surrounded by the vehicle beam 1 and the middle pipe 7 to form a triangle, or the sub-beam is surrounded by the vehicle beam 1, the middle pipe 7 and the head pipe 8 to form a quadrilateral This type of bicycle is more stable and stronger than a single beam bicycle. The hinge shaft 16 and the hinge shaft 17 are both disposed laterally, and the axis of the hinge shaft 16 has a certain angle with the projection of the axis of the rear wheel axle 5 in the horizontal plane, and the projection of the axis of the hinge shaft 17 and the axis of the rear wheel wheel in the horizontal plane has Must be at an angle.

The auxiliary beam has a fixed section 61 and a movable section 62. The fixed section 61 is welded to the head pipe 8 or the front section of the vehicle beam. The tail end of the movable section 62 is hingedly disposed on the middle pipe 7 or the five-way pipe through the hinge shaft 64, and the front section of the movable section 62 is The end of the fixing section 61 is locked by the locking device 63. After the locking device 63 is opened, the movable section 62 can be rotated. The middle tube 7 is provided with a fixing buckle, for example, a C-ring that is open on one side, and the movable portion 62 is rotated and then caught on the fixing buckle to prevent it from slipping.

As shown in Fig. 8 and 9, for the folding process, first open the locking device 63 of the auxiliary beam, turn the movable section 62 against the middle pipe 7 and fasten it with the fixed buckle, then rotate the upper beam to lower the middle section of the beam Folding, the lower side of the front part of the middle section of the beam will bear against the outer wall of the five-way pipe 3, thereby restricting the further rotation of the middle section 12, and finally turning the front section of the beam, and finally the front and rear wheels of the bicycle are substantially aligned.

The third embodiment, as shown in FIG. 10, has basically the same structure as the first embodiment, and the difference is that it can also participate in folding. The connecting member 18 has a front end connected to the front portion of the beam 1 and a rear end connected to the middle tube 7 or the reinforcing tube 19. The connector 18 can be a wire, a plurality of segments or chains that are connected together in series.

In a fourth embodiment, as shown in FIGS. 11 and 12, the folding bicycle has a vehicle beam, and the vehicle beam includes a front section, a middle section and a rear section, and the three sections of the vehicle beam are hingedly connected; and the auxiliary beam has a front beam, and the auxiliary beam also includes a front section. 91. The middle section 92 and the rear section 93 are hingedly connected between the three sections of the vehicle beam. Each of the hinge axes is disposed laterally, and the axis of the hinge shaft has a certain angle with the projection of the rear wheel axle axis in the horizontal plane. At the same time, two locking shafts are arranged at the two hinge shafts of the vehicle beam to lock or loosen the adjacent two sections of the vehicle beam; or two locking shafts of the auxiliary beam are simultaneously provided with locking devices, adjacent to each other The two sections of the car are locked or loosened.

In the above embodiments, the three sections of the vehicle beam are only exemplified, and the vehicle beam may also be three or more sections. The principle is the same and will not be described again.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

Rights request

1. A folding bicycle, the vehicle beam has three or more sections, and each section of the vehicle beam is hingedly connected, wherein: the hinge shafts are laterally disposed, and the axis of the hinge shaft has an angle with a projection of the rear wheel axle axis in a horizontal plane. .

2. The folding bicycle according to claim 1, wherein: the vehicle beam (1) has a front section (11), a middle section (12), and a rear section (13), and a transverse hinge shaft is disposed between the front section and the middle section, and the middle section is A transverse hinge axis is provided between the rear sections.

3. The folding bicycle according to claim 2, wherein: the hinge shaft is disposed on one side of the vehicle beam, and the locking device is disposed on an opposite side of the hinge shaft.

4. The folding bicycle according to claim 3, characterized in that: a connecting member (18) capable of participating in folding is provided, the front end of the connecting member is connected to the front portion of the beam, and the rear end is connected to the middle tube or the reinforcing tube.

5. The folding bicycle according to claim 4, wherein: the connecting member is a metal wire or a plurality of tubes, rods or chains that are connected in series.

6. The folding bicycle according to claim 2, wherein: the lower side of the vehicle beam is provided with a sub-beam, the sub-beam has a fixed section (61) and a movable section (62), and the front end of the movable section and the end of the fixed section The locking device (63) is disposed between the movable device and the movable portion is rotatable.

The folding bicycle according to claim 6, wherein: the auxiliary beam fixing section (61) is fixed to the front section of the head pipe or the vehicle beam (1), and the end of the movable section is hinged to the middle pipe or the five-way tube.

8. The folding bicycle according to claim 6, wherein: the middle tube is provided with a fixing buckle, and when the movable portion is rotated to approach the middle tube, the fixing buckle is engaged with the fastening portion and fastened.

The folding bicycle according to any one of claims 2 to 8, characterized in that, in the folded position, the lower side of the middle portion of the vehicle beam bears against the outer wall of the five-way pipe (3).

10. The folding bicycle according to claim 9, wherein: a positioning pad (31) is disposed outside the five-way pipe.

The folding bicycle according to any one of claims 2 to 8, wherein: a first fixing member is disposed on the rear fork, and a second fixing member is disposed on the front fork or the vertical tube. The first fixing member and the second fixing member are cooperatively locked.

The folding bicycle according to claim 11, wherein: the first fixing member and the second fixing member are magnetic buckles; or the first fixing member and the second fixing member are mating sleeves And the sub-sleeve, the mother sleeve and the sub-case can be locked or loosened.