KR101232741B1 - A Co1lapsible Bicycle - Google Patents

Abstract

The present invention relates to a folding bicycle, and more particularly, to a folding bicycle that is easy to drag and move in a folded state by reducing the overall size and volume of the bicycle through a simple folding operation.
The present invention relates to a folding bicycle, comprising: a first frame rotatably provided with a front wheel steered by manipulation of a handle on a front side thereof; a second frame on which a saddle is mounted via a saddle frame on a rear side; A front frame provided to be foldable in a forward and backward direction by using a vertical hinge portion that hinges the first frame and the second frame as a central axis; A rear wheel is rotatably connected to one rear side, and a front one side is hinged to a rear hinge side of the second frame by a horizontal hinge pin to rotate at a predetermined angle to the front wheel side with the horizontal hinge pin as a central axis. A rear frame connected; And the first frame includes locking means arranged at a portion in contact with the second frame to restrain or release the folding operation of the first frame. The locking means includes a lever part, a link part connected to the lever part so as to be disposed in a recessed groove which is recessed in a height direction at one end of each of the first frame and the second frame, and the link part. It is connected in a horizontal direction and provides a folding bike, characterized in that consisting of the engaging portion is variable in position along the width direction of the front frame during operation of the lever unit.

Description

Folding bike {A Co1lapsible Bicycle}

The present invention relates to a folding bicycle, and more particularly, to a folding bicycle that is easy to drag and move in a folded state by reducing the overall size and volume of the bicycle through a simple folding operation.

Recently, with the increase of the desire for well-being along with environmental problems, the movement to promote health by using bicycles as a means of transportation is spreading.

However, due to the rapid urbanization and population concentration, the dwelling type is changed to a dwelling type like an apartment, which makes it difficult to store the bike due to the narrow residential space, and gradually decreases the green space. It is true.

In addition, in large cities where transportation is inconvenient, there is an increasing demand for a short distance such as work or school by using a bicycle or a public transport such as a subway to quickly and conveniently move around a destination.

To meet these demands, folding bicycles have been developed to reduce the volume of the bicycles, making it easier to carry, but conventional folding bicycles are very inconvenient to handle because the front wheels are not aligned with the rear wheels in line with the folding part, and the user has to carry and move directly when moving. Due to the weight of the bicycle itself, there was a problem that it is inconvenient to use and difficult to carry.

The present invention is to solve the above problems, to provide a folding bicycle that is convenient to use and easy to carry by aligning the front wheel and the rear wheel in a row when folding the bicycle.

In addition, the present invention is to provide a folding bicycle that can be easily dragged and moved by the user by adjusting the height when folded by being folded in a horizontal direction and a vertical direction around the horizontal hinge pin and the vertical hinge portion during the folding operation.

In order to achieve the above object, the present invention is a folding bicycle, the first frame is rotatably provided with a front wheel that is steered by the operation of the handle on the front side, and the saddle is mounted on the rear side via the saddle frame A second frame and a front frame provided to be foldable in a forward and backward direction with a center axis as a center axis of the vertical hinge portion hinged to the first frame and the second frame; A rear wheel is rotatably connected to one rear side, and a front one side is hinged to a rear hinge side of the second frame by a horizontal hinge pin to rotate at a predetermined angle to the front wheel side with the horizontal hinge pin as a central axis. A rear frame connected; And the first frame includes locking means arranged at a portion in contact with the second frame to restrain or release the folding operation of the first frame. The locking means includes a lever part, a link part connected to the lever part so as to be disposed in a recessed groove which is recessed in a height direction at one end of each of the first frame and the second frame, and the link part. It is connected in a horizontal direction and provides a folding bike, characterized in that consisting of the engaging portion is variable in position along the width direction of the front frame during operation of the lever unit.

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Preferably, the link portion may be provided so that the portion connected to the locking portion is eccentric.

Preferably, the engaging portion is provided with a depression formed in a predetermined depth in contact with the front frame and when the folding operation of the first frame the depression is in contact with the protrusion formed on one side of the front frame left, Flow to the right can be constrained.

Preferably, the rear frame is disposed between the first plate on which the rear wheels are mounted and the first plate and the second plate connected to each other through the horizontal hinge pin, and the first plate and the second plate. It is provided with a connecting portion, the rotational displacement of the rear frame can be restrained by one end of the connecting portion is caught on the lower side of the second frame during the rotation of the rear frame.

Preferably, the saddle may be provided to enable height adjustment to the second frame.

Preferably, the handle may be provided to be foldable in one direction with respect to the first frame.

According to the present invention, anyone can easily operate through a simple folding operation, and the front wheel and the rear wheel are aligned side by side, so that the user can easily carry it to a desired place without difficulty, thereby increasing the convenience of carrying.

In addition, according to the present invention by folding the horizontal hinge pin and the vertical hinge portion in the horizontal direction and the vertical direction at the time of folding operation by adjusting the height when folded can be easily dragged and moved to improve the mobility. .

1 is an overall perspective view of a folding bicycle according to the present invention.
Figure 2 is a perspective view showing a coupling relationship of the first frame, the second frame and the locking means according to the present invention.
3 is a view showing an operation relationship of the locking means according to the present invention.
4 is a view showing a rotation constraint relationship between the front frame and the rear frame according to the present invention.
5 is a flow chart showing a folding process of the folding bicycle according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding of the present invention, the same reference numerals will be used to denote the same constituent elements even if they are shown in different drawings.

In the following description, the horizontal direction refers to the width direction of the front frame with reference to FIG. 2, and the vertical direction refers to the height direction of the front frame with reference to FIG. 2.

1 is an overall perspective view showing a folding bicycle according to the present invention, Figure 2 is a perspective view showing a coupling relationship between the first frame, the second frame and the locking means according to the present invention, Figure 3 is a locking means according to the present invention 4 is a view showing the relationship of operation, Figure 4 is a view showing the rotational constraint relationship between the front frame and the rear frame according to the present invention, Figure 5 is a flow chart illustrating a folding process of the folding bicycle according to the present invention.

In the folding bicycle 100 according to the preferred embodiment of the present invention, the rear frame 130 on which the rear wheel 102 is mounted is rotated at an angle to the front wheel 101 side through the horizontal hinge pin 113, and the front wheel ( The front frame 110 equipped with 101 is folded to the rear wheel 102 side through the vertical hinge portion 112 so that the front wheel 101 and the rear wheel 102 are stacked side by side to reduce the volume of the entire bicycle. The mobility is maximized, and includes a front frame 110 and a rear frame 130.

The front frame 110 is connected to the rear frame 130 to form the overall skeleton of the bicycle, the front wheel 101 for performing the steering function by the operation of the handle 140 on the front side is the fork frame ( 111 is provided on the lower portion of the fork frame 111 is provided with a handle 140 so that the user can be mounted to adjust the direction of the front wheel 101 to the left and right.

And the rear side of the front frame 110 is provided with a saddle 150 via the saddle frame 152 so that the user can be seated.

At this time, the front frame 110, unlike the conventional bicycle, as shown in Figure 2, the middle of the length of the first frame 114 and the second frame 115 to be foldable via the vertical hinge portion 112 as a medium. It is connected by).

That is, the front frame 110 of the present invention comprises two parts, the first frame 114 on which the handle 140 and the front wheel 101 are mounted, and the second frame 115 on which the saddle 150 is provided. The first frame 114 and the second frame 115 are connected to each other via the vertical hinge portion 112, the front end of the first frame 114 when the bicycle is folded. The front wheel 101 mounted on the first frame 114 is aligned with the rear wheel 102 mounted on the rear frame 130 to be described later by being folded toward the two frames 115.

At this time, the saddle frame 152 provided in the lower portion of the saddle 150 to support the saddle 150 is slidingly coupled to the second frame 115 as shown in Figure 1 and then coupled with the button It is fixed by the same fixing means (not shown) is provided so as to slide downward along the second frame 115 when necessary.

Due to this, the user can adjust the height of the saddle 150 to be adjusted according to the height of the user and when the folding bicycle 100 is transported the first frame 114 is folded and the saddle frame 152 slides downward In this way, the overall volume of the bicycle is reduced and minimized so that the user can easily carry it.

In addition, the handle 140 provided in front of the first frame 114 is also provided to be folded to the front wheel 101 side by being connected to the front side of the first frame 114 via the folding portion 142. When transporting, reduce the overall volume of the bicycle so that the user can easily transport.

Since the sliding structure of the saddle frame 152 and the folding structure of the handle 140 mentioned above are the same as those used in the known folding bicycle, detailed description thereof will be omitted.

On the other hand, the folding operation of the first frame 114 is the operation of the locking means 120 is disposed on the surface in which the first frame 114 and the second frame 115 abut each other, as shown in Figs. When the lever unit 121 is positioned on the side of the second frame 115 based on the drawing of FIG. 3, the locking means 120 of the first frame 114 and the second frame 115 is formed. Constraining one side so as not to be folded, when the lever portion 121 is positioned on the first frame 114 side, the restraint of the locking means 120 is released, so that the first frame 114 is the vertical hinge portion. It is provided so as to be folded by being rotated toward the second frame 115 with respect to the central axis (112).

As shown in FIG. 2, the locking means 120 includes a lever part 121 provided to protrude on an upper side of the front frame 110 and a link connected downwardly from the lever part 121. The engaging portion 124 is connected to the link portion 122 in the horizontal direction and the position is changed along the width direction of the front frame 110 when the lever portion 121 is operated. .

That is, the locking means 120 is linked so that the link portion 122 rotates together when the lever portion 121 is rotated, and the locking portion 124 is connected to the middle of the length of the lever portion 121. It is connected to the horizontal direction via the link 123 is configured to form a single overall link structure.

At this time, the middle of the length of the link portion 122 connected to one end of the link 123 is provided to be eccentric as shown in Figure 2 by the rotation of the link portion 122 when the lever 121 is rotated It is provided so that the position of the engaging portion 124 connected to the link 123 can be changed.

That is, the link portion 122 has the same shape as the first link portion 122a having one end connected to the lever portion 121 and the other end connected to the first disk 122b, and the first disk 122b. A second link portion 122d and a first disc 122b and a second disc which are connected to the second disc 122c disposed to face each other and disposed on the same central axis as the first link portion 122a. Both ends are connected to 122c, respectively, and the first link part 122a and the second link part 122d each include a third link part 122e having an eccentric shaft.

As such, the third link portion 122e is positioned to be eccentric with the first and second link portions 122a and 122d, and the eccentric third link portion 122e is connected to the engaging portion 124 and the connection link ( 123 is connected to the connection portion 123 when the link portion 122 is rotated by the rotation of the lever unit 121 will be able to change the position of the engaging portion 124.

The locking means 120 is disposed between one end portion in which the first frame 114 and the second frame 115 contact each other, and the first frame 114 and the second frame 115 are in contact with one end portion. The recessed groove 116 is provided to be recessed to a predetermined depth so that the locking means 120 can be disposed.

That is, the recess groove 116 is formed at one end of the first frame 114 and the second frame 115, respectively, so that the first link portion 122a can be seated. Vertical indentation groove 116a is formed in a predetermined length from the top to the bottom, the first disk 122b, the second disk 122c and the arc-shaped indentation groove (3e) for connecting it (3) 116b and a horizontal recessed groove 116c on which the engaging portion 124 and the connecting link 123 connecting the third link portion 122e are seated.

As described above, the concave groove 116 is provided at one end of the first frame 114 and the second frame 115 so that the locking means 120 is disposed in the concave groove 116 to form a link structure. When the locking means 120 rotates the lever 121, the eccentric motion can be smoothly generated in the recessed groove 116.

In addition, the locking means 120 is fixed by a holder 126 surrounding the first link portion 122a disposed in the recess groove 116 so as to prevent separation from the recess groove 116 when folded. Be sure to

In this case, as shown in FIG. 2, protrusions 117 are disposed on one side of the first frame 114 and the second frame 115 so as to be adjacent to the horizontal recess groove 116c. To be inserted into the depression 125 formed on one side of the (124).

That is, the locking portion 124 of the locking means has a predetermined depth of the depression 125 on the surface in contact with the first frame 114 and the second frame 115 by the eccentric movement during the rotation of the lever 121. To form a recess, the protrusion 117 corresponding to the recess 125 is provided on one side of the first frame 114 and the second frame 115, respectively, as shown in FIG. The 121 is rotated toward the first frame 114 so that the position of the locking part 124 is changed to contact the side surfaces of the first frame 114 and the second frame 115 so that the first frame 114 may be rotated. In the case of restraining the folding operation, the protrusion 117 provided in the front frame 110 is inserted into the depression 125.

Thus, the protrusion 117 is inserted into the recess 125 to prevent the locking portion 124 from flowing left and right, so that the locking means 120 disposed in the recessed groove 116 smoothly eccentrically moves. Is to make this happen.

The rear frame 130 is hinged to the second frame 115 through a horizontal hinge pin 113 that is penetrated in the width direction to the rear side of the second frame 115 of the front frame 110. And the horizontal hinge pin 113 is pivotally connected to the front wheel 101 side by a central axis.

The rear frame 130 is the first plate 131 is rotatably mounted to the rear wheel 102, the first plate 131 is disposed opposite to the horizontal hinge pin 113 is connected via a medium The second plate 132 and the connecting portion 133 disposed between the first plate 131 and the second plate 132.

That is, as shown in Figure 1, the folding bicycle 100 of the present invention is connected to each other through the horizontal hinge pin 113, the first plate 131, the second frame 115 and the second plate 132. As a result, the first plate 131 and the second plate 132 have a structure capable of rotating at an angle to the second frame 115 in the horizontal direction about the horizontal hinge pin 113.

At this time, the connecting portion 133 disposed between the first plate 131 and the second plate 132 is one side of the connecting portion 133 when the rear frame 130 is rotated as shown in FIG. Excessive rotation is prevented by contacting the lower one side of the second frame 115.

That is, the connecting portion 133 is provided in a substantially inverted 'B' shape having a horizontal portion and a vertical portion A, and the second frame 115 also has a substantially inverted portion 'H' having a horizontal portion and a vertical portion B. It is provided in a 'shape, so that one end of the vertical portion (A) provided in the connecting portion 133 is caught by the vertical portion (B) provided in the second frame 115 when the rear frame 130 is rotated. The length of the second frame 115 is formed to prevent excessive rotation of the rear frame 130.

Therefore, when the rear frame 130 is folded, the rear frame 130 is folded toward the front wheel 101 at an appropriate angle through the horizontal hinge pin 113 and the vertical hinge portion 112 is used as the rear frame 130. The first wheel 114 is rotated so that the front wheel 101 is folded toward the second frame 115 so that the front wheel 101 and the rear wheel 102 can be aligned side by side.

On the other hand, the lower side of the first plate 131 on which the rear wheel 102 is mounted is provided with a driving sprocket 104 connected to the pedal 106 is commonly used, the rear wheel 102 via the chain 103 By being connected to the driven sprocket 105 is provided on the side to receive the driving force from the drive sprocket 104 when the pedal 106 rotates to allow the bicycle to move forward.

As a result, the rear frame 130 and the front frame 110 are connected to each other via a horizontal hinge pin 113 to form a skeleton of one completed bicycle.

The folding process of the folding bicycle 100 of the present invention configured as described above is performed in the same order as in FIG.

First, as shown in FIG. 5A, in a bicycle in which the user is seated on the saddle 150 and then moved forward through the rotation of the pedal 106, the rear frame 130 is horizontally hinged as shown in FIG. 5B ( 113) is rotated by a predetermined angle toward the front wheel 101 side.

Subsequently, as shown in FIG. 5C, the lever part 121 is rotated toward the first frame 114 of the front frame 110 to release the locking means 120, and then the first frame 114 is vertical. The hinge unit 112 is folded toward the second frame 115 with the central axis as the center axis. At the same time, by folding the handle 140 connected to the front frame 110 via the folding part 142 toward the front wheel 101 side, the front wheel 101 and the rear wheel 102 are stacked side by side as shown in FIG. 5D. do.

Then, by applying a force to the saddle 150 by sliding the saddle frame 152 downward to complete the folding of the folding bicycle 100 according to the present invention as shown in FIG.

As described above, the folding bicycle 100 of the present invention is arranged in parallel with the front wheel 101 and the rear wheel 102 by a simple folding operation, so that the bicycle is easily stored and transported. Can be operated to increase the convenience of the user.

Although specific embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to such specific structures. Those skilled in the art will be able to practice variously by modifying or changing the present invention without departing from the technical spirit described in the claims below. However, such simple design variations or modifications are clearly disclosed in advance within the scope of the present invention.

100: folding bike 101: front wheel
102: rear wheel 103: chain
104: driving sprocket 105: driven sprocket
106: pedal 110: front frame
111: fork frame 112: vertical hinge portion
113: horizontal hinge pin 114: first frame
115: second frame 116: recess groove
116a: vertical injection groove 116b: arc injection groove
116c: horizontal recess groove 117: protrusion
120: locking means 121: lever portion
122: link portion 122a: first link portion
122b: first disk 122c: second disk
122d: second link portion 122e: third link portion
123: connection link 124: hook
125: depression 126: holder
130: rear frame 131: first edition
132: second edition 133: connection
140: handle 142: folding part
150: saddle 152: saddle frame

Claims (8)

In a folding bike,
A first frame rotatably provided with a front wheel steered by manipulation of a handle on one front side, a second frame on which a saddle is mounted via a saddle frame on one rear side, and hinged on the first frame and the second frame A front frame provided to be foldable in the front and rear directions by connecting the vertical hinge portion as a central axis;
A rear wheel is rotatably connected to one rear side, and a front one side is hinged to a rear hinge side of the second frame by a horizontal hinge pin to rotate at a predetermined angle to the front wheel side with the horizontal hinge pin as a central axis. A rear frame connected; And
The first frame may be disposed in contact with the second frame and the locking means for restraining or releasing the folding operation of the first frame; Including,
The locking means may include a lever part, a link part connected to the lever part so as to be disposed in a recessed groove formed in one end of the first frame and the second frame along a height direction, respectively, and in a horizontal direction with the link part. The folding bicycle, characterized in that consisting of the engaging portion is variable in position along the width direction of the front frame during operation of the lever unit. delete delete The method of claim 1,
The link unit is a folding bike, characterized in that the portion connected to the engaging portion is provided to be eccentric. 5. The method of claim 4,
The locking portion is provided with a depression that is formed in a predetermined depth in contact with the front frame and when the folding operation of the first frame the depression is in contact with the protrusion formed on one side of the front frame flow to the left and right Folding bicycle characterized in that the restraint. The method of claim 1,
The rear frame includes a first plate on which the rear wheel is mounted and a second plate disposed to face the first plate and connected through the horizontal hinge pins, and a connection portion disposed between the first plate and the second plate. And one end of the connection part is caught by the lower side of the second frame when the rear frame is rotated, thereby limiting the rotational displacement of the rear frame. The method of claim 1,
The saddle is a folding bike, characterized in that the height adjustment is provided to the second frame. The method of claim 1,
The handle is foldable bike, characterized in that provided in one direction with respect to the first frame.

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