KR101144341B1 - Collapsible bicycle - Google Patents

Abstract

The folding bicycle of the present invention includes a frame in which a head tube and a rear coupling hole are respectively formed and a seat tube is formed at the center thereof; A front assembly coupled to the head tube and rotating along the longitudinal direction of the frame; A rear assembly coupled to the rear coupling hole and rotating along the longitudinal direction of the frame; A sheet coupled to the sheet tube; A handle assembly coupled to the front assembly and rotating about a central axis of the head tube; And a foldable pedal which transmits a driving force to the rear assembly, wherein the front assembly and the rear assembly are located at both sides of the frame and are folded in a facing state.

Accordingly, the front assembly and the rear assembly can be folded in the longitudinal direction of the frame to facilitate storage and transportation of the bicycle, thereby reducing the volume as much as possible.

Description

Folding bicycle {Collapsible bicycle}

The present invention relates to a folding bicycle, and more particularly to a folding bicycle that can be folded to facilitate storage and transportation of the bicycle.

Recently, as environmental problems arise, the movement of using bicycles that emit no pollutants instead of fossil fuel transportation is gradually spreading. As a result, investment in infrastructure such as bicycle lanes is gradually increasing. to be.

Despite the positive aspects of these bicycles, the rapid change in urbanization and population concentration has made it difficult to store bicycles due to the narrow residential spaces.

In addition, as the number of high-rise buildings such as apartments increases, elevators are used for the movement of bicycles, which causes inconvenience due to the volume of bicycles.

In addition, for outdoor hobby activities such as mountain bikes, bicycles were carried away.

Accordingly, the folding bike that can be easily stored and transported in the trunk and elevator of the vehicle has been released to some extent solved the problem caused by the volume during storage or transportation of the bicycle.

However, although the conventional folding bicycle has reduced the volume to a certain level in order to save space, it is usually difficult to reduce the volume drastically because the frame is folded in half, so it is still inconvenient to use public transportation.

In particular, the Seoul Metropolitan Rapid Transit Corporation passenger transport regulations stipulated to carry only items within 158 cm of the sum of width, length, and width, but the conventional folding bicycles were far less than the portable regulations.

In addition, the conventional folding bicycle has a disadvantage in that a lot of physical strength is consumed during driving by configuring the size of the wheel to reduce the volume.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to provide a folding bike that can be folded while reducing the volume and easy to store and transport the bicycle.

In addition, another object of the present invention to provide a folding bicycle to prevent the exhaustion of physical strength during driving by the driving force of the motor.

The folding bicycle of the present invention for achieving the above object, the head tube and the rear coupling hole is formed respectively and the frame tube is formed in the center; A front assembly coupled to the head tube and rotating along the longitudinal direction of the frame; A rear assembly coupled to the rear coupling hole and rotating along the longitudinal direction of the frame; A sheet coupled to the sheet tube; A handle assembly coupled to the front assembly and rotating about a central axis of the head tube; And a foldable pedal which transmits a driving force to the rear assembly, wherein the front assembly and the rear assembly are located at both sides of the frame and are folded in a facing state.

In addition, the center axis of the rear coupling hole is preferably formed so as not perpendicular to the longitudinal center axis of the frame.

The front assembly may include a handle post having a rotation support formed to be inserted into the head tube, a front fork having a rotation formed to be hinged to the rotation support, and a front wheel coupled to the front fork. desirable.

On the other hand, it is preferable that a fixture for limiting the rotation of the front fork is provided.

In addition, the handle post and the front fork is formed with a sliding groove, it is preferable that the fixing projection is formed with a sliding projection corresponding to the sliding groove.

The handle assembly includes an outer tube inserted into the handlepost, an inner tube inserted into the outer tube, a handle coupled to rotate with respect to the inner tube, and a handle fixing means for limiting rotation of the handle. It is preferable to include.

On the other hand, the handle fixing means, the first and second insertion grooves formed in the inner tube, the pin insertion hole formed in the handle so as to correspond to the first and second insertion groove, and in the state inserted into the pin insertion hole It is preferable to include a fixing pin coupled to one of the first and second insertion grooves.

In addition, it is preferable that a spring is provided between the pin insertion hole and the fixing pin to apply an elastic force in a pulling direction.

In addition, it is preferable that fixing clamps are respectively provided at overlapping portions of the handle post and the outer tube and overlapping portions of the outer tube and the inner tube.

On the other hand, the rear assembly, it is preferable to include a rear fork, a rotary fork is formed to hinge-couple the rear coupling hole, a rear wheel coupled to the rear fork, and rear fixing means for limiting the rotation of the rear fork. Do.

In addition, the central axis of the rotary coupler is preferably formed to coincide with the central axis of the rear coupling hole.

In addition, the rear fixing means is attached to the seat tube and the front engaging hole is formed, the engaging portion is hinged to the mount portion and the rear locking hole is formed, and the front and rear latch respectively correspond It is preferable to include the front and rear support portion formed on the rear fork.

On the other hand, the sheet includes a seat post is inserted into the seat tube, it is preferable that the fixing clamp is further provided at the overlapping portion of the seat tube and the seat post.

In addition, the seat tube is formed through, it is preferable to move the seat post to protrude to the bottom of the seat tube to fix the folded state of the rear assembly.

In addition, the sheet tube is preferably formed with a reinforcing rib.

On the other hand, it is preferable that a drive motor, a battery, a control unit for transmitting a driving force to the rear assembly is further provided.

In addition, the rear assembly is preferably provided with a bracket for fixing the accommodating portion and the driving motor to which the battery is loaded.

In addition, the folding pedal is preferably provided with a stepping sensor.

On the other hand, the frame is preferably provided with a receiving portion for receiving the bicycle cover.

According to the folding bicycle according to the present invention, the front assembly and the rear assembly can be folded in the longitudinal direction of the frame to facilitate storage and transportation of the bicycle, thereby reducing the volume as much as possible.

In other words, the folded volume was reduced as much as possible, making it easy to carry a bicycle and use public transportation.

In addition, by applying a wheel of a small size to reduce the volume of the folding bike as much as possible at the same time there is an effect of offsetting the disadvantage of using a lot of physical strength during driving due to the driving force of the motor.

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

1 is a perspective view of a folding bicycle according to the present invention, Figure 2 is an exploded perspective view of the front assembly of Figure 1, Figure 3 is an exploded perspective view of the handle assembly of Figure 2, Figure 4 is Figure 1 5 is a perspective view illustrating an exploded rear assembly of the rear assembly, FIG. 5 is a view illustrating a frame of a folding bicycle according to the present invention, FIG. 6 is a view illustrating a rear fork of a folding bicycle according to the present invention, and FIGS. 1 is a perspective view showing a folded state of FIG.

1 to 7, the folding bicycle A according to the present invention includes a frame 100, a front assembly 200 which is folded and rotated in a longitudinal direction of the frame 100, and the frame. A rear assembly 300 that rotates in the longitudinal direction of 100 and a handle assembly 400 coupled to the front assembly 200.

Here, the front assembly 200 and the rear assembly 300 are folded to face each other so as to be located on both sides of the frame 100, a detailed description thereof will be described later.

In addition, the head tube 110 is formed in the front of the frame 100, the rear coupling hole 120 is formed in the rear, the seat tube 130 is formed in the center.

At this time, the head tube 110 is installed so that the front assembly 200 and the handle assembly 400 to rotate based on the central axis of the head tube 110, the rear coupling hole 120 is the length of the frame 100 The rear assembly 300 is coupled to rotate along the direction, and the seat 500 is coupled to the seat tube 130.

In addition, the frame 100 or the rear assembly 300 is provided with a folding pedestal 600 to which the pedaling force of the occupant is transmitted. On the other hand, since the folding lung 600 is a known technique, detailed description thereof will be omitted.

In addition, it is preferable that a driving sprocket, driven sprocket, a chain, and a transmission for transmitting the stepping force transmitted to the folding closing moon 600 to the rear assembly 300 are preferably provided.

In addition, the front assembly 200, the handle post 210, the rotation support portion 211 is formed to be inserted into the head tube 110, and the rotating portion 221 is formed so as to hinge the rotation support portion 211. Is composed of a front fork 220 and a front wheel 230 is coupled to rotate to the front fork 220.

And, the fixture 240 for limiting the rotation of the front fork 220 is further provided.

Meanwhile, a sliding groove 250 is formed in the handle post 210 or the front fork 220, and a sliding protrusion 260 corresponding to the sliding groove 250 is formed in the fixture 240.

Accordingly, the fastener 240 is slid to move the hinge coupling portion of the handle post 210 and the front fork 220.

That is, when the fastener 240 covers the hinge coupling portions of the handle post 210 and the front fork 220, the rotation of the front fork 220 is limited, and the fastener 240 is the handle post 210 and the front. When moving to the upper portion of the hinge coupling portion of the fork 220, the front fork 220 is rotated along the longitudinal direction of the frame 100 is to fold the front fork 220 and the front wheel 230.

On the other hand, the fixing tool 240 is provided with a fixing handle 241, the inner peripheral surface of the fixing tool 240 pressurizes the outer peripheral surface of the handle post 210 and the front fork 220 as the fixing handle 241 is operated. By fixing the fixture 240 or by releasing the pressure is to release the fixed state of the fixture 240.

In addition, the handle assembly 400, the outer tube 410 is inserted into the handle post 210, the inner tube 420 is inserted into the outer tube 410, and the inner tube 420 Handle 430 is coupled to rotate and the handle fixing means 440 to limit the rotation of the handle 430.

The handle fixing means 440 may include the first and second insertion grooves 441 and 442 formed at intervals of 90 degrees on the inner tube 420, and correspond to the first and second insertion grooves 441 and 442. A pin insertion hole 443 formed in the handle 430 and a fixing pin 444 coupled to one of the first and second insertion grooves 441 and 442 in a state of being inserted into the pin insertion hole 443.

In addition, a spring 445 is provided between the pin insertion hole 443 and the fixing pin 444 to apply an elastic force in a pulling direction.

Accordingly, when the fixing pin 444 is inserted into the first insertion groove 441, the handle 430 maintains a state unfolded in a direction perpendicular to the longitudinal direction of the inner tube 420, and the fixing pin 444. ) Is inserted into the second insertion groove 442, the handle 430 is maintained in a folded state in the horizontal direction with respect to the longitudinal direction of the inner tube (420).

In this case, the fixing pin 444 is automatically inserted into the first and second insertion grooves 441 and 442 by the elastic force of the spring 445.

In addition, the fixing clamp 450 is installed at the overlapping portion of the handle post 210 and the outer tube 410 and the overlapping portion of the outer tube 410 and the inner tube 420, respectively. On the other hand, since the fixing clamp 450 is the same configuration as the above-described fixture 240, detailed description thereof will be omitted. That is, the handle post 210, the outer tube 410 and the inner tube 420 is the overall length is adjusted by the operation of the fixing clamp 450.

In addition, the central axis c1 of the rear coupling hole 120 is formed not to be orthogonal to the longitudinal center axis c2 of the frame 100. This is to prevent interference with the folded front assembly 200 to be folded to be laterally deflected to one side of the frame 100 to be described later.

As a result, the front assembly 200 and the rear assembly 300 are located at both sides of the frame 100 so as to be folded in a facing state.

In addition, the rear assembly 300, the rear fork 310 is formed with a rotary coupling sphere 311 so as to hinge the rear coupling hole 120, the rear wheel 320 is coupled to the rear fork 310 And a rear fixing means 330 for limiting rotation of the rear fork 310.

In addition, the central axis c3 of the rotary coupler 311 is formed to coincide with the central axis c1 of the rear coupling hole 120. Accordingly, when the rear assembly 300 is unfolded, the rear assembly 300 is maintained in parallel with the frame 100, and when the rear assembly 300 is folded, the rear assembly 300 is deflected toward one side of the frame 100.

In addition, the rear fixing means 330 is attached to the seat tube 130, the mounting portion 331 is formed with a front locking hole (331a), and the hinge is coupled to the mounting portion 331 and the rear locking hole ( And a front and rear support parts 333 and 334 formed on the rear fork 310 so as to correspond to the binding hole 332 and the front and rear locking holes 331a and 332a respectively formed.

Accordingly, when the front and rear latching holes 331a and 332a and the front and rear support parts 333 and 334 are firmly fixed to each other, the rear fork 310 and the rear wheel 320 maintain the unfolded state with respect to the frame 100. do. On the other hand, when the binding hole 332 is rotated to release the binding between the front and rear fasteners 331a and 332a and the front and rear support parts 333 and 334, the rear fork 310 and the rear wheel 320 are rotation coupling holes ( 311 is to be rotated about the frame 100 to be folded.

The seat 500 includes a seat post 510 inserted into the seat tube 130, and a fixing clamp 520 is further provided at an overlapping portion of the seat tube 130 and the seat post 510. . The fixing clamp 520 is also the same configuration as the above-described fixture 240, so a detailed description thereof will be omitted.

On the other hand, the seat tube 130 is formed through, and moves to project the lower portion of the seat post 510 to the lower portion of the seat tube 130 to fix the folded state of the rear assembly 300. .

That is, the seat post 510 protruding downward from the seat tube 130 supports the rear surface of the rear wheel 320 in the folded state to maintain the folded state.

In addition, a reinforcing rib 131 is formed in the seat tube 130. That is, the maximum stress is generated in the connection between the seat tube 130 and the frame 100 is to be reinforced by the reinforcing rib 131.

On the other hand, the folding bicycle (A) of the present invention was applied to a small size of the front wheel 230 and the rear wheel 320 in order to reduce the volume could be consumed a lot of physical strength during driving.

In order to solve such a problem, a driving motor 710 and a battery / control unit 720 for transmitting a driving force to the rear wheel 320 may be further provided.

Accordingly, the disadvantage that a lot of stamina is consumed while driving due to the small size of the wheel is to be offset by the driving force of the drive motor 710.

In addition, the rear fork 310 may further include a bracket 740 for fixing the accommodating part 730 for loading a battery and the driving motor 710.

In addition, the folding pedal 600 is further provided with a stepping force sensor 750, the stepping force sensor 750 measures the stepping force of the user to adjust the driving force of the drive motor 710.

On the other hand, the frame 100 is further provided with a receiving portion 800 for accommodating the bicycle cover (not shown) to cover the folding bicycle (A) of the present invention by the bicycle cover.

In addition, a handle may be formed on the frame 100 to allow movement in a folded state.

In addition, Figure 7 shows the folded state of the folding bicycle (A) according to the present invention. On the other hand, since the folding and unfolding method of the folding bicycle (A) has been described above, a detailed description thereof will be omitted.

As mentioned above, although preferred embodiment of this invention was described in detail, the technical scope of this invention is not limited to the above-mentioned embodiment, It should be interpreted by the claim. At this time, those of ordinary skill in the art should consider that many modifications and variations are possible without departing from the scope of the present invention.

1 is a perspective view showing a folding bicycle according to the present invention.

FIG. 2 is an exploded perspective view of the front assembly of FIG. 1. FIG.

3 is an exploded perspective view of the handle assembly of FIG. 2.

4 is an exploded perspective view of the rear assembly of FIG. 1.

5 is a view showing a frame of a folding bicycle according to the present invention.

6 is a view showing a rear fork of the folding bicycle according to the present invention.

7A to 7B are perspective views illustrating the folded state of FIG. 1.

* Description of symbols on main parts of the drawings *

A-folding bike

100-frame

110-headtube

120-Rear Combined Ball

130-seat tube

200-front assembly

300-rear assembly

400-Handle Assembly

500-sheet

600-folding pedal

710-drive motor

720-battery control unit

730-storage

800-receptacle

Claims (19)

A frame in which a head tube and a rear coupling hole are respectively formed and a sheet tube is formed at the center thereof; A front assembly coupled to the head tube and rotating along the longitudinal direction of the frame; A rear assembly coupled to the rear coupling hole and rotating along the longitudinal direction of the frame; A sheet coupled to the sheet tube; A handle assembly coupled to the front assembly and rotating about a central axis of the head tube; And A foldable pedal for transmitting a driving force to the rear assembly; ≪ / RTI > The front assembly and the rear assembly are respectively located on both sides of the frame are folded in a facing state, The central axis of the rear coupling hole is a folding bike, characterized in that not formed orthogonal to the longitudinal central axis of the frame. delete The method of claim 1, The front assembly, A handle post having a rotatable support formed to be inserted into the head tube; A front fork having a rotating part formed to be hinged to the rotating support part, and Folding bicycle, characterized in that consisting of a front wheel coupled to the front fork to rotate. The method of claim 3, Folding bicycle, characterized in that provided with a fixture to limit the rotation of the front fork. The method of claim 4, wherein Sliding grooves are formed in the handle post and the front fork, and the fixing member is provided with a sliding protrusion corresponding to the sliding groove. The method of claim 3, The handle assembly, An outer tube inserted into the handle post; An inner tube inserted into the outer tube, A handle coupled to rotate about the inner tube, and Folding bicycle comprising a handle fixing means for limiting the rotation of the handle. The method of claim 6, The handle fixing means, First and second insertion grooves formed in the inner tube; A pin insertion hole formed in the handle to correspond to the first and second insertion grooves, and And a fixing pin coupled to one of the first and second insertion grooves in a state of being inserted into the pin insertion hole. The method of claim 7, wherein Folding bicycle, characterized in that the spring is provided between the pin insertion hole and the fixing pin for applying an elastic force in the pulling direction. The method of claim 6, The folding bike, characterized in that the fixing clamp is installed on the overlapping portion of the handle post and the outer tube and the overlapping portion of the outer tube and the inner tube, respectively. The method of claim 1, The rear assembly, A rear fork having a rotary coupler formed to be hinged with the singer rear coupling hole, A rear wheel coupled to the rear fork, and And a rear fixing means for limiting rotation of the rear fork. The method of claim 10, The central axis of the rotary coupler is formed so as to coincide with the central axis of the rear coupling hole. The method of claim 10, The rear fixing means, A mount part attached to the seat tube and having a front locking hole formed therein; A binding hole hinged to the mount and a rear catching hole is formed, and And a front and rear support part formed on the rear fork so as to correspond to the front and rear latching holes, respectively. The method of claim 1, The seat includes a seatpost that is inserted into the seat tube, the folding bicycle, characterized in that the fixing clamp is further provided on the overlapping portion of the seat tube and the seat post. The method of claim 13, The seat tube is penetratingly formed, the folding bike, characterized in that to move to protrude to the lower end of the seat tube to fix the folded state of the rear assembly. The method of claim 1, Folding seat, characterized in that the seat tube is formed with a reinforcing rib. The method of claim 1, Foldable bicycle, characterized in that the drive motor for further transmitting a driving force to the rear assembly, the battery, the control unit is further provided. The method of claim 16, The rear assembly is a folding bike, characterized in that provided with a bracket for fixing the accommodating portion and the drive motor to which the battery is loaded. The method of claim 16, The folding pedal is a folding bike, characterized in that the step sensor is further provided. The method of claim 1, The frame is a folding bike, characterized in that the receiving portion for receiving a bicycle cover is further provided.

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