JP2003170881A - Folding structure for bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding structure for a bicycle. <P>SOLUTION: The folding structure for the bicycle is composed of a front frame, a rear frame and a connection part. The front frame has a connection seat on one side with a connection hole penetrating the seat, and a lug seat on the other side with a hole penetrating it. The rear frame has a seat part and a locking groove on one side and a connection seat on the other side with a connection hole penetrating it, and the connection part is constituted with a connection means, locking tool and screw rod at the end of a cam lever. The screw rod penetrates the hole in the lug seat of the front frame and the connection hole in the connection seat of the rear frame, and further penetrates the connection hole of the front frame after the cam lever of the connection part is pivotally provided in the locking means, and the locking means engages in the locking groove of the seat part of the rear frame to be further locked by the locking tool, thus achieving the folding structure with a two-stage safety function capable of speedily assembling, disassembling and folding. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for folding a bicycle, and more particularly, it is used for a structure for folding a handle or a body of a bicycle. This design enables quick disassembly and folding, and a two-step security function. It relates to a folding structure provided.

[0002]

2. Description of the Related Art In a known bicycle folding structure, as shown in FIG. 1, an upper shaft seat 811 is provided at a lower end of an upper post 81 and a lower shaft seat 821 is separately provided at an upper end of a lower post 82. The upper shaft seat 811 and the lower shaft seat 82 are pivoted by the pivot 85b.
1 is connected to a rotatable structure, and the lever 83 is attached to a side portion of the upper shaft seat 811 by pivots 85a and 85c.
And a locking portion 84 are provided, a locking seat 86 is provided on one side of the lower shaft seat 821 corresponding to the locking portion 84, and the whole is combined to form the quick-fitting portion B. In use, the lever is provided. 83 is rotated downward, the locking portion 84 and the locking seat 86 are engaged or separated, and then the lever 83 is further rotated upward, so that the upper post 81 and the lower post 82 are quickly separated. Or they are combined.

However, in the above structure, the locking portion 84 and the locking seat 86 are disengaged from each other due to the vibration of the wheels during running or the external force at the time of impact, which is likely to cause injury to passengers.
In view of such drawbacks of known bicycles, the present invention is provided for improvement thereof.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a kind of folding structure for a bicycle, which is composed of a front frame, a rear frame and a joint, of which the front frame and the rear frame are combined. An engaging means, a locking tool, and a screw rod are provided at the end of the cam lever of the connecting part to be connected, and the screw rod connects the hole of the ear seat of the front frame and the connecting hole of the connecting seat of the rear frame, and further connects the connecting part. The cam lever is provided in the coupling hole of the front frame after being coupled to the engaging means, and the engaging means engages in the locking groove of the seat portion of the rear frame, and is further locked by the locking tool, so that The structure of disassembling and assembling folding shall be achieved, and it shall be used for folding the handlebar of the bicycle or the vehicle body.

In the folding structure of the bicycle according to the present invention, the above-mentioned engaging means is engaged with the engaging groove of the rear frame and further engaged with an engaging member so that an external force or vibration of the vehicle body may occur during traveling of the vehicle body. The following problems are to prevent the front and rear frames from being disengaged or loosened, exhibit the function of the secondary safety coupling, be easily manufactured, and be manufactured at low cost.

[0006]

According to a first aspect of the present invention, there is provided a front frame, a coupling seat is provided on one side, a coupling hole penetrating the coupling seat is provided, and an ear seat is provided on the other side. The front frame and the rear frame are provided with a hole penetrating therethrough, and a seat portion and a locking groove are provided on one side, a coupling seat is provided on the other side, and a coupling hole passing therethrough The rear frame is provided, and the connecting portion is a connecting portion, and the connecting portion is constituted by providing an engaging means and a locking tool at the end of the cam lever, and a screw rod, and the screw rod of the front frame. The engagement means penetrates through the hole of the ear seat and the coupling hole of the coupling seat of the rear frame, and further penetrates through the coupling hole of the front frame after the cam lever of the coupling portion is pivotally mounted on the engagement means, and the engagement means is the rear frame seat portion. It is engaged in the locking groove of and is locked by the locking tool. Collapsible rapid assembly and disassembly, characterized in that it is a folded structure having a two-stage safety functions, and a bicycle folding. The invention according to claim 2 is the folding structure for a bicycle according to claim 1, characterized in that the engaging means of the coupling part and the nut each exhibit a fixed coupling. According to a third aspect of the present invention, an elastic rubber crawler is provided on the eccentric shaft between the upper shaft part and the lower shaft part of the cam lever to prevent abrasion due to friction between the steel cam lever and the aluminum coupling hole. The folding structure for a bicycle according to claim 1, characterized in that. The invention according to claim 4 is the folding structure for a bicycle according to claim 1, characterized in that the coupling portion is provided in the folding structure for a bicycle handle. Claim 5
The invention of (1) is the folding structure for a bicycle according to claim 1, wherein the connecting portion is provided in the folding structure for the bicycle frame.

[0007]

FIG. 2 is an exploded perspective view of a specific embodiment of the present invention. Please also refer to the operation diagrams of FIGS. As shown, the folding structure of the bicycle according to the present invention is composed of a front frame 1, a rear frame 2 and a connecting portion 3. Among them, two coupling seats 11 are provided on one side of the front frame 1, and the two coupling seats 11 are connected to the coupling holes 110.
Through which the locking groove 111 is provided, and the ear seat 1 is provided on the other side.
2 is provided, and the hole 121 penetrates the ear seat 12. Two seats 21 are provided on one side of the rear frame 2, a locking groove 211 is provided between the two seats 21, one screw hole 212 is provided on the side, and a screw 341 is used for locking. Tool 34
Are coupled to each other, two coupling seats 22 are provided on the other side, and two coupling holes 221 pass through. The coupling portion 3 includes a cam lever 31, one end of which is bent so that the upper shaft portion 31
1 and the lower shaft portion 312 are provided, and the upper shaft portion 311 and the lower shaft portion 3 are provided.
Eccentric shafts 313 having different axial centers are provided between the two 12, and a screw thread 321 is provided at one end of the engaging means 32 to provide a nut 322.
The fitting seat 3 in which the hole 324 penetrates through the center at the other end
23, the female screw 330 is provided in the inner wall tube at one end of the screw rod 33, the screw 331 is screwed, and the crams 35, 35 'are made into elastic rubber crams. After fitting with the upper shaft portion 311 and the lower shaft portion 312, the coupling hole 110 of the coupling seat 11 and the hole 3 described above.
24, the cam lever 31 made of steel and the coupling hole 110 made of aluminum are prevented from wear due to friction, and are coupled by the locking means 36, so that the whole structure can be quickly disassembled and assembled.

At the time of combination, the ear seat 12 of the front frame 1 and the joint seat 22 of the rear frame 2 are fitted, the screw rod 33 is inserted into the through hole 121 and the joint hole 221, and the screw 331 is the female screw 330. Screwed into
The front frame 1 and the rear frame 2 form a rotatable structure. At this time, as described above, after the junior bodies 35 and 35 'are fitted to the upper shaft portion 311 and the lower shaft portion 312 of the cam lever 31 described above, The coupling hole 110 of the coupling seat 11 and the engaging means 3 described above.
2 is inserted into the hole 324 and is also coupled by the locking means 36, and the engaging means 32 is provided thereon.
11 and correspondingly, and is further locked to the rear frame 2 by a locking tool 34 to form a folding structure.

In use, as shown in FIGS.
The front frame 1 and the rear frame 2 are configured to be rotatable as described above, and when the cam lever 31 is rotated when the frames are combined or folded, the eccentric shaft 313 rotates between the coupling holes 110 and is pivotally connected thereto. Engaging means 32
When the locking groove 211 is engaged with the eccentric shaft 313, the eccentric shaft 313 and the hole 324 of the engaging means 32 generate an eccentric gap X, and this X is combined with the above-mentioned nut 322 and adjusted to an appropriate distance,
Further, the locking tool 34 is sandwiched between the gaps X, and the engaging means 32
When the cam lever 31 escapes, it is combined with the locking device 34 and has a function of a secondary safety connection.

FIG. 7 is an embodiment diagram in which the present invention is applied to other parts of a vehicle body. As can be seen from the figure, the present invention is applicable to a frame position of the vehicle body A which requires an arbitrary folding, Using a simple structure, quick disassembly and combination can be achieved, and it has a safety function structure of secondary security connection.

[0011]

As a whole, the bicycle folding structure of the present invention is surely convenient to use, solves the problems of the known structure that are not complicated and does not have the function of preventing secondary falling, and can be quickly disassembled and assembled. And, the present invention has not yet been publicly used and is subject to patent requirements. It should be noted that the above embodiments do not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the claims of the present invention.

[Brief description of drawings]

FIG. 1 is a perspective view of a known preferred embodiment.

FIG. 2 is an exploded perspective view of a preferred embodiment of the present invention.

FIG. 3 is an operational diagram of the preferred embodiment of the present invention.

FIG. 4 is a perspective view of the preferred embodiment of the present invention.

FIG. 5 is a plan operation diagram of the preferred embodiment of the present invention.

FIG. 6 is a plan operation diagram of the preferred embodiment of the present invention.

FIG. 7 is a plan view showing another example of the vehicle body of the present invention applied to another portion.

[Explanation of symbols]

81 Upper post 82 Lower post 811 Upper shaft seat 821 Lower shaft seat 85a, 85c Axis B Rapid fitting part 86 Locking seat 84 Locking part 83 Engagement lever 1 Front frame 2 Rear frame 11, 22 Joint seat 110, 221 coupling hole 111, 211 engaging groove 12 Ear seats 121, 324 holes 212 screw holes 331, 341 screws 321 screw thread 322 nut 33 screw rod 330 female screw 311 Upper shaft part 312 Lower shaft part 313 Eccentric shaft 34 Locking tool 35, 35 'cram school 36 locking means 3 Coupling part 323 Mating seat 21 seat 31 cam lever 32 engagement means

Claims (5)

[Claims] 1. A front frame, wherein a coupling seat is provided on one side, a coupling hole penetrating the coupling seat is provided, and an ear seat is provided on the other side, and a hole penetrating therethrough is provided. The front frame and the rear frame are provided with a seat portion and a locking groove on one side,
The rear frame is provided with a coupling seat on the other side and a coupling hole penetrating therethrough, and is formed as a coupling portion, and an engaging means, a locking tool, and a screw rod are provided at the end of the cam lever. In addition, the above-mentioned connecting part is provided, and the screw rod penetrates through the connecting hole of the ear seat of the front frame and the connecting hole of the connecting seat of the rear frame, and after the cam lever of the connecting part is pivotally installed on the engaging means, the front frame. Of the rear frame seat, the engaging means is engaged with the engaging groove in the rear frame seat part, and is engaged with the engaging tool, which allows quick assembly / disassembly and folding, and a folding step having a two-step security function. The folding structure of the bicycle, which is characterized by being structured. 2. The folding structure for a bicycle according to claim 1, wherein the engaging means of the coupling part and the nut each exhibit a fixed coupling. 3. An elastic rubber crawler is provided on an eccentric shaft between an upper shaft part and a lower shaft part of the cam lever to prevent abrasion due to friction between a steel cam lever and an aluminum coupling hole. The folding structure for a bicycle according to claim 1, wherein: 4. The folding structure for a bicycle according to claim 1, wherein the coupling portion is provided in the folding structure for the handle of the bicycle. 5. The bicycle folding structure according to claim 1, wherein the connecting portion is provided in the folding structure of the bicycle frame.