KR20150116759A

KR20150116759A - Compact folding type bicycle

Info

Publication number: KR20150116759A
Application number: KR1020140149289A
Authority: KR
Inventors: 김정만
Original assignee: 김정만
Priority date: 2014-04-08
Filing date: 2014-10-30
Publication date: 2015-10-16
Also published as: WO2015156599A1

Abstract

The present invention relates to a compact folding bicycle including a steering part, a driving part and a body part, wherein the body part comprises a first frame connected to the steering part, a second frame hinged by the first frame and the first hinge axis, And a third frame provided between the second frame and the driving unit and hinged by the second frame and the second hinge axis, wherein the first hinge axis and the second hinge axis are inclined at a predetermined angle .

Description

COMPACT FOLDING TYPE BICYCLE

The present invention relates to a compact folding bicycle, and more particularly, to a compact folding bicycle which can reduce the length and volume of a long bicycle by a simple and less forceful folding operation and can be used in connection with public transportation But also a compact folding bicycle that is easy to store.

Bicycles, which have only been regarded as a means of transportation in the past, have increased in recent years in the interest of health and leisure, thereby increasing demand for exercise and hobby activities.

Also, due to environmental problems and rising costs of automobile fossil fuels, the use of bicycles that do not emit pollutants at all is increasing.

Despite the various positive aspects of such bicycles, due to rapid urbanization and population concentration, residential forms have changed into collective housing types such as apartments, which makes it difficult to store bicycles due to the narrow residential space. In order to ride bicycles, There is a problem that it must be done.

In addition, in the case of long distance travel between cities, it is frequently encountered that the user must quickly move to the destination area by using public transportation such as a train or a bus, and further move to the final destination by bicycle.

In order to solve the problems of storage and transportation, various folding bikes have been proposed. In the conventional folding bicycle which is folded to face the front and rear wheels, the folding bike must be folded and unfolded, There is a problem in that when the bicycle is folded during folding and when the bicycle is directly moved by the user, the bicycle may inconvenience in transportation due to its own weight.

In addition, conventional folding bikes folding the front and rear wheels to be aligned side by side cause a lot of inconveniences because the folding frame needs to be folded in one step and then folded back in two steps by dragging the rear wheel and rear fork forward. .

Korean Patent Publication No. 10-2012-0027917 (2012.02.22)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a folding and unfolding apparatus that can easily fold and unfold even with a small force, and can fold the frame so that the front wheels and the rear wheels are aligned in a single operation. In addition, the foldable bicycle can be moved using the wheels of its own, making it easy to board, fold, transport and store, so that it can be used for commuting, commuting and business use in conjunction with public transportation, as well as travel, The present invention provides a compact folding bicycle as an eco-friendly transportation means in an era of high oil prices.

The technical object of the present invention is not limited to the above-mentioned technical objects and other technical objects which are not mentioned can be clearly understood by those skilled in the art from the following description will be.

In order to achieve the above object, the compact folding bicycle of the present invention includes a steering unit, a driving unit, and a body unit, wherein the body unit includes: a first frame connected to the steering unit; A second frame hinged by the first frame and the first hinge axis; And a third frame provided between the second frame and the driving unit and hinged by the second frame and the second hinge axis; Wherein the first hinge axis and the second hinge axis are inclined at predetermined angles, respectively.

The first hinge axis and the second hinge axis are provided on one side and the other side of the body part, respectively.

Further, when the body part is folded, one surface of the first frame and the other surface of the second frame and the other surface of the third frame are opposed to each other.

The steering wheel of the steering unit and the driving wheel of the driving unit may be disposed so as to correspond to each other.

The body may include a locking portion provided on the second frame for restraining or releasing the opposing surfaces of the first hinge axis and the second hinge axis so as to restrain or operate the pivotal movement of the first hinge axis and the second hinge axis, Device; .

In addition, the locking device may include a first pivot portion that is formed at the center of the second frame, and a pair of second pivot portions that are provided on both sides of the first pivot portion. A pair of first link bars connecting the first and second rotary parts to transmit the rotary motion of the first rotary part to the second rotary part, A second link bar reciprocating toward one side and the other side of the second frame, and a locking member interlocking with the second link bar and restricting or releasing the first frame and the second frame, the second frame and the third frame from each other do.

A first guide hole for guiding the movement of the second link bar is formed on an opposite surface of the first hinge shaft and the second hinge shaft provided on the second frame.

The first pivot portion includes a first pivot axis and a pair of first connection pins provided opposite to each other with respect to a center of the first pivot axis and each of the pair of first link bars is connected to each other do.

The second pivot portion is spaced apart from the second pivot axis by a predetermined angle at a predetermined radius of the center of the second pivot axis, and a pair of the first link bar and the second link bar And a second connection pin of the second connector.

The locking member may include a connecting link connected to the second link bar, a locking plate provided at an end of the connecting link, and a pair of restricting ribs formed at predetermined heights along both sides of the locking plate do.

The locking device may further include a guide shaft provided between the second link bar and the locking member and having a second guide hole for guiding the reciprocating motion of the connecting link, And an insertion groove into which the guide shaft is inserted is formed.

According to the present invention, it is easy to carry out folding and spreading by a small force, and it is not only folded to a minimum volume by a single operation but also can be moved by using the wheels of the folded bicycle itself, .

1 is a perspective view of a compact folding bicycle according to an embodiment of the present invention.
2 is a perspective view illustrating a body of a compact folding bicycle according to an embodiment of the present invention.
3 is a perspective view illustrating a first frame, a second frame, and a third frame of the body shown in FIG.
4 is an operational state diagram showing a compact folding bicycle according to an embodiment of the present invention.
5 is an exploded perspective view showing a locking device for a compact folding bicycle according to an embodiment of the present invention.
6 is an enlarged view showing a main part of the locking device shown in Fig.
7 to 9 are operational state diagrams showing the locking device shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Of course.

1 and 2 are perspective views respectively showing a compact folding bicycle and its body according to an embodiment of the present invention. FIG. 3 is a perspective view illustrating a first folding frame, a second frame and a third frame constituting the body shown in FIG. 4 is an operational state view showing a compact folding bicycle according to an embodiment of the present invention. The detailed construction and folding process of the compact folding bicycle will be described in detail with reference to FIGS. 1 to 4. FIG.

1, the compact folding bicycle 1 includes a steering unit, a driving unit, a body unit, and the like. The steering unit includes a handle bar (not shown) that can be grasped to change the traveling direction of the bicycle driver, A steering wheel 14 for transmitting the steering direction of the steering wheel bar 12 to the steering wheel 16, and the like.

The driving unit generates a driving force of the bicycle. The driving unit includes a pedal 22, a sprocket 24 for converting the motion of the pedal 22 into a rotational motion, A chain 26 as a delivery device, and a drive wheel 28 for generating a drive force by rotation of the chain 26, and the like.

The body part supports the self-weight of the compact folding bicycle 1 by connecting the steering part and the driving part, and supports the load of the bicycle driver sitting on the seat 32 connected by the seat stem 34 And includes a first frame 100, a second frame 200, a third frame 300, and the like.

2 and 3, the first frame 100 is connected to the steering unit, and the second frame 200 is connected to the end of the first frame 100 and the first hinge axis 400 Respectively. The first hinge hole 410 is formed at each end of the first frame 100 and the second frame 200 facing each other so that the first hinge shaft 400 can be axially coupled.

The third frame 300 is provided between the second frame 200 and the driving unit and is hinged to the second frame 200 by a second hinge axis 500. The second frame 200 And the third frame 300 are mutually opposed to each other, a second hinge hole 510 is formed so that the second hinge shaft 500 can be axially coupled.

The first hinge shaft 400 and the second hinge shaft 500 are each inclined at a predetermined angle so that the steering wheel 16 is rotated when the compact folding bicycle 1 is folded. And the drive wheels 28 are disposed to face each other to correspond to each other.

That is, the first hinge axis 400 and the second hinge axis 500 are formed to be inclined upward toward the center of the second frame 200, and preferably formed at the end of the first frame 100 The first contact surface 140 and the second contact surface 240 and the third contact surface 250 formed at both ends of the second frame 200 are inclined at an angle of 70 degrees with respect to the longitudinal direction of the frame . Although not shown, it is obvious that the end face of the third frame 300 facing the third contact surface 250 is also formed at 70 degrees with respect to the longitudinal direction of the frame.

The first hinge axis 400 and the second hinge axis 500 are provided on one side and the other side of the body so that the first frame 100 and the second frame 200, And the other surfaces of the second frame 200 and the third frame 300 are opposed to each other. Therefore, the steering wheel 16 of the steering unit and the driving wheels 28 of the driving unit are disposed to be opposed to each other when the body unit is folded.

The first upper step 120 and the first lower step 130 provided at the end of the first frame 100 may be formed by a second upper step 220 provided at one end of the second frame 200, And the second lower step 230 so as to maintain the unfolded state of the body part.

The second upper step 220 and the second lower step 230 provided at the other end of the second frame 200 and the third upper step 320 provided at the end of the third frame 300, And the third lower step 330 are fitted so as to correspond to each other so as to maintain the unfolded state of the body portion as described above.

4 shows a folding sequence of the compact folding bicycle 1 according to an embodiment of the present invention. Referring to FIG. 4, the folding bicycle 1 according to an embodiment of the present invention includes: (a) first lowering the height of the seat 32; The second frame 200 and the third frame 300 are folded together about the first hinge axis 400 and the second hinge axis and (c) the steering wheel 16 and the driving wheel 28 are rotated, (D) Finally, the handle stem 14 is folded so that the compact folding bicycle according to an embodiment of the present invention is folded in its smallest form.

FIG. 5 is an exploded perspective view showing a locking device for a compact folding bicycle according to an embodiment of the present invention, and FIG. 6 is an enlarged view showing a main part of the locking device shown in FIG. 5 and 6, a structure for restraining or releasing the pivotal motion of the first hinge shaft 400 and the second hinge shaft 500 to fold the compact folding bicycle 1 will be described in detail.

The locking unit 600 is provided on the second frame 200 to lock the first folding bicycle 1 to the first hinge axis 200. The locking unit 600 is provided on the body part to lock or release the folding operation of the compact folding bicycle 1. [ 400 or the second hinge axis 500 to restrain or actuate the pivoting movement of the first hinge axis 400 and the second hinge axis 500. [

More specifically, the locking device 600 includes a first rotary part 610, a first link bar 620, a second rotary part 630, a second link bar 640, and a locking member 650 .

The first rotary part 610 includes a first rotary shaft 612 extending in the second frame 200 and a pair of first connection pins 614 provided between the first rotary shaft 612 and the first rotary shaft 612, .

The first rotating shaft 612 is axially coupled to the first rotating shaft hole 201 formed in the second frame 200 and rotates in conjunction with the rotation of the handle 601.

The pair of first connection pins 614 are provided to face each other with respect to the center of the first pivot axis 612, and the pair of first link bars 620 are connected to each other. That is, the pair of first link bars 620 connects the first rotary part 610 and the second rotary part 630 so that the rotational movement of the first rotary part 610 is transmitted to the second rotary part 610, (630).

The second rotary part 630 includes a second rotary shaft 632 and a second rotary shaft 632. The second rotary shaft 630 includes a pair of rotary shafts 632 provided on both sides of the first rotary shaft 610, And a second connection pin 634. The second rotating shaft 632 is axially coupled to a second rotating shaft hole 202 formed in the second frame 200.

The second link pin 640 and the second link bar 640 are spaced apart from each other by a predetermined angle at a predetermined radius of the center of the second rotatable shaft 632, Respectively. That is, the second link bar 640 reciprocates toward one side and the other side of the second frame 200 by the pivotal movement of the second pivotal part 630.

The locking member 650 is configured to restrict the first frame 100 and the second frame 200 in cooperation with the second link bar 640 and to restrict the second frame 200 and the third frame 300 to each other Or release.

The locking member 650 comprises a connecting link 652, a locking plate 656 and a restricting rib 654. The connection link 652 is connected to the second link bar 640 and the locking plate 656 is provided at an end of the connection link 652. The locking rib 654 is connected to the locking plate 656 ) Along a circumference of both sides thereof.

Accordingly, the restricting ribs 654 are moved in the direction of the first linking ribs 110 and the second locking ribs 210 by the reciprocating movement of the second link bars 640, the second locking ribs 210, (310).

More specifically, between the first frame 100 and the second frame 200, the restricting ribs 654 restrain or release the first locking ribs 110 and the second locking ribs 210 from each other, The second frame 200 and the third frame 300 are constrained or released from each other.

A first guide hole 204 is formed on each of the opposite surfaces of the first hinge shaft 400 and the second hinge shaft 500 of the second frame 200. The first guide hole 204 guides the movement of the second link bar 630 to induce correct operation of the locking member 650. [

According to an embodiment of the present invention, the locking device 600 further includes a guide shaft 660 which is disposed between the second link bar 640 and the locking member 650 And a second guide hole 662 for guiding the reciprocating motion of the connection link 652 is formed. The guide shaft 660 is inserted into the guide shaft hole 203 and slides vertically in the guide shaft hole 203 when the connection link 652 reciprocates.

An insertion groove 658 is formed between the pair of the restricting ribs 654 so that the locking member 650 is inserted between the first locking rib 110 and the second locking rib 210 and the third locking rib 310, the guide shaft 660 is inserted and fixed in the insertion groove 658.

7 to 9 are operation state diagrams of the locking device shown in FIG. 5. Hereinafter, the operation sequence of the locking device 600 will be described in detail.

7 is a state in which the locking member 650 restrains the first locking rib 110, the second locking rib 210 and the third locking rib 310. In the compact folding bicycle 1, The handle 601 is rotated in the counterclockwise direction to release the locking state of the locking member 650 as shown in FIGS. 8 and 9.

8, when the knob 601 is rotated in the counterclockwise direction, the first link bar 620 and the second link 630 are rotated in conjunction with the rotation of the first rotatable shaft 612, The locking member 650 connected to the second link bar 640 moves the second link bar 640 toward the outside of the second frame 200 as shown in FIG. The first locking ribs 110, the second locking ribs 210, and the third locking ribs 310 are disengaged from the frame 200 to release the restricting state. At this time, when the guide shaft 660 is slid upward in the guide shaft hole 203 of the second frame 200, the first frame guide shaft hole 103 and the third frame guide shaft hole 303 are formed with the guide The coupling with the shaft 660 is released, and it is possible to separate the frames when folded.

In order to fix the compact folding bicycle 1 in a folded state and to fix the folding bicycle 1, the locking member 650 is rotated in the clockwise direction by turning the knob 601 in the opposite direction to that shown in FIGS. So that the first locking rib 110, the second locking rib 210, and the third locking rib 310 are constrained.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the following claims.

1: Compact folding bike 12: handlebar
14: Handle stem 16: Steering wheel
22: pedal 24: sprocket
26: chain 28: drive wheel
32: seat 34: seat stem
100: first frame 110: first locking rib
120: first upper step 130: first lower step
140: first contact surface 200: second frame
201: first coaxial hole 202: second coaxial hole
203: guide shaft hole 204: first guide hole
210: second locking rib 220: second upper step
230: second lower step 240: second contact surface
250: third contact surface 300: third frame
310: third locking rib 320: third upper step
330: third lower step 400: first hinge axis
410: first hinge hole 500: second hinge shaft
510: second hinge hole 600: locking device
610: first east portion 612: first coaxial
614: first connection pin 620: first link bar
630: second east portion 632: second coaxial
634: second connecting pin 640: second link bar
650: locking member 652: connecting link
654: constraining rib 656: locking plate
658: insertion groove 660: guide shaft
662: second guide hole

Claims

A compact folding bicycle comprising a steering part, a driving part and a body part,
The body part
A first frame connected to the steering unit;
A second frame hinged by the first frame and the first hinge axis; And
A third frame provided between the second frame and the driving unit and hinged by the second frame and the second hinge axis; / RTI >
Wherein the first hinge axis and the second hinge axis are inclined at predetermined angles, respectively.

The method according to claim 1,
Wherein the first hinge shaft and the second hinge shaft are provided on one side and the other side of the body part, respectively.

3. The method of claim 2,
One surface of the first frame and the other surface of the second frame and the other surface of the third frame are opposed to each other when folding the body portion,
Wherein the steering wheel of the steering unit and the driving wheel of the driving unit are disposed to face each other so as to correspond to each other.

The method according to claim 1,
The body part
A locking device provided on the second frame for restraining or releasing the opposing surfaces of the first hinge axis and the second hinge axis so as to restrain or operate the pivotal movement of the first hinge axis and the second hinge axis; The compact folding bike further includes.

5. The method of claim 4,
The locking device includes:
A first pivoting portion that is formed at the center of the second frame,
And a pair of second rotary parts provided on both sides of the first rotary part.
A pair of first linking bars connecting the first and second turning portions to transmit the turning motion of the first turning portion to the second turning portion,
A second link bar reciprocating toward one surface and the other surface of the second frame by the pivoting motion of the second pivot portion,
And a locking member for restraining or releasing the first frame and the second frame, and the second frame and the third frame from each other in cooperation with the second link bar.

6. The method of claim 5,
The locking device includes:
Further comprising a guide shaft provided between the second link bar and the locking member and having a second guide hole for guiding the reciprocating motion of the connecting link,
And an insertion groove into which the guide shaft is inserted is formed between the pair of restraining ribs.