KR100657858B1 - Portable bicycle - Google Patents

Abstract

A portable bicycle is provided to minimize the size of the portable bicycle by rotating and folding parts when not using. A portable bicycle includes a handle post(10), a handle column(20), a front wheel fork(30), an upper horizontal frame(40), a lower horizontal frame(50), a seat post(60), a rear wheel fork(80), and a reinforcing frame(90). The handle column rotatably supports the handle post. The front wheel fork is engaged with a lower end portion of the handle post to support a front wheel. The upper and lower horizontal frames support parts. A seat is engaged with the seat post so as to be ascended or descended.

Description

Portable Bikes {PORTABLE BICYCLE}

1 is a perspective view showing an example of a folding bicycle having a conventional structure,

2 is a perspective view showing an embodiment of the present invention,

3 is a side view of the present invention shown in FIG.

4A and 4B are detailed views of a clamp constituting the present invention;

Figure 5a, 5b and 5c is a perspective view showing the folding process of the pedal constituting the present invention,

6a, 6b and 6c and 6d illustrate the operation of the invention,
7 is a view schematically showing a shifting process of the transmission of the present invention.

<Explanation of symbols for main parts of drawing>

1: connection post 10: handle post

12: lower yoke
20; Handle Column 21: Front Wheel

delete

30: front wheel fork 40: upper horizontal frame

41: extension link portion 50: lower horizontal frame

60: seat post 61: guide frame

62: slider 70: upper yoke

71: pedal 72: rear wheel

73: transmission 80: rear wheel fork

90: reinforcement frame C: clamp

L: Lock

The present invention relates to a bicycle, and in particular, the upper horizontal frame and the lower horizontal frame is rotatable, and the pedal crank including the handle post and the pedal is foldable by minimizing the size of the bicycle when not in use, The present invention relates to a portable bicycle configured for convenient movement.

In general, bicycles that carry cargo or perform functions as a means of transportation by driving the front wheels or the rear wheels using the user's response pressure have been widely used as one of the representative means of transportation using manpower. Along with the effects, various applications as recreational means are possible, while demand is gradually spreading due to environmentally friendly characteristics.

Such a bicycle is typically composed of a support portion composed of a frame, a fork, a saddle and a handle, a power receiving portion composed of a crank and a pedal, and an electric portion composed of a chain, a sprocket, a transmission, and the like.

On the other hand, the bicycle of the conventional structure as described above has a large size with a heavy weight in proportion to the height of the user by using the truss-shaped diamond-shaped frame as a structure, the bicycle using such a large frame as a structure While having excellent driving and mechanical characteristics, it requires a large occupied space.

Therefore, the bicycle adopting the truss-shaped diamond frame guarantees stable characteristics during the driving process, while when it is not used, it requires a large occupied space, making it difficult to move through the elevator or to store the room. It is difficult to travel in parallel with the use of public transportation such as, and when loading through a passenger car, a separate fixing means is required.

Accordingly, recently developed bicycles are configured to be able to fold up components that occupy a large amount of space such as a frame so that indoor storage can be made smoothly while minimizing essential spaces in the process of transportation and transportation.

1 is a perspective view showing an example of a folding bicycle configured to fold a frame as described above. As shown in FIG. 1, the distance between the front wheels 120 and the rear wheels 130 is reduced by half according to the folding of the frame. Folding-type bicycle 200 is configured to facilitate storage, the first half of the bicycle consisting of a fork 160 including a handle 140 and a handle post 150, the front wheel 120,

The rear part of the bicycle consisting of the rear wheel 130 and the seat column including the power receiving portion consisting of the crank 170 and the pedal 161, the transmission portion consisting of the chain and sprocket and the transmission, the seat post 180 and the seat 171 To have a structure in which the '-' shaped horizontal frame 110 is connected.

At this time, the middle part of the horizontal frame 110 is divided, and in a normal state in which the driving of the bicycle is performed by connecting the connecting portion hinged to be rotated or fixed according to the operation of the clamp 190, the horizontal frame 110 is in a straight line. Meanwhile, the front and rear parts of the bicycle are located on the same straight line, and the inter-wheel distance is reduced by folding the front wheel part and the rear wheel part of the bicycle, respectively, with respect to the horizontal frame 110 at the time of movement and storage.

However, the conventional folding bicycle 200 as described above is deformed or easily broken by an impact applied from the outside by relying on a linear horizontal frame 100 having a weak structure for supporting the front and rear wheels. Problems occur.

In addition, the conventional folding bicycle 200 has to mount the pedal 161 including the crank 170 in a state close to the lower portion of the saddle, so that the posture of the occupant becomes unstable and easily accumulates fatigue during the pedaling process. Accordingly, in particular, the use of light metals is limited to increase the rigidity of the horizontal frame where stress is concentrated, and it is difficult to reduce the weight regardless of the distance between the axes because the width or thickness must be increased.

Therefore, while the conventional folding bicycle 200 has a high weight, even when folding the front wheel and the rear wheel around the horizontal frame 110 has a lot of problems, such as difficult to move or store by occupying a lot of space.

The present invention is to solve the conventional problems as described above, the technical problem of the present invention, the upper horizontal frame and the lower horizontal frame configured to be rotatable from the handle column and the seat post, the pedal including a handle post and a pedal By constructing the crank to be foldable, it is possible to provide a portable bicycle that can be conveniently carried and moved without deteriorating driving characteristics by minimizing the size of the bicycle when not in use.

Technical problem of the present invention as described above,

Clamps that couple the connecting posts to the upper and lower sides of the inner circumferential surface, and detachably couple the grips to both sides of the stem attached horizontally from the upper part of the connecting posts, and on one side, the clamps are intermittently rotated according to the action of the lock. A handle post having a;

A handle column coupled to a lower portion of an outer circumference of the handle post to support rotation of the handle post, and having upper and lower yokes horizontally attached to both ends of the outer circumference;

A front wheel fork, which is integrally connected to the handle post via a clamp that rotates according to the action of the lock and is steered according to the rotation of the handle post, and the front wheel is coupled to the front end of the front end;

An upper horizontal frame hinged to an upper yoke of the handle column and formed at an opposite end thereof to form a long hole;

One end of the tip is hinged to the lower yoke of the handle column and arranged in parallel with the upper horizontal frame, and forms an extended link portion having an inclined angle upward to the opposite surface of the lower yoke connecting portion, and locks to the tip of the extended link portion. A lower horizontal frame having a clamp on which rotation is interrupted in accordance with the action of;

It is hinged from the extended link portion of the lower horizontal frame and rotates according to the action of the clamp, and the seat 52 is coupled to the upper end, and the movement is guided by the long hole of the upper horizontal frame to the contact surface with the upper horizontal frame. A seat post projecting the guide pin horizontally;

A horizontal support frame interposed between the upper yoke and the seat post of the handle column to support the front of the seat post, and the expansion and contraction of the slider from the guide frame is interrupted by the action of the lock coupled to the bottom;

Rotatingly coupled from the connecting portion of the lower horizontal frame and the seat post, the pedal crank having a pedal on both sides of the front end is symmetrically coupled, the other end is rotatably coupled, the chain between the pedal and the rear wheel And a rear wheel fork having a speed changer configured to repeatedly arrange the sprockets to increase and transmit the rotational force generated by the pedal pressure to the rear wheels.

Interposed between the seat post and the rear wheel fork to support the back of the seat post, it is achieved by providing a portable bicycle characterized in that consisting of a reinforcement frame through a clamp that is intermittent rotation in accordance with the action of the lock.

Hereinafter, a portable bicycle according to the present invention will be described in detail with the accompanying drawings.

Figure 2 is a perspective view showing one embodiment of the present invention, Figure 3 is a side view of the present invention shown in Figure 2, the portable bicycle 100 according to the present invention, the handle post 10 and the seat when driving Expanding the distance between the front wheels 21 and the rear wheels 72 while the post 60 is developed, the smooth running is possible, and the movement and storage are minimized with the efficient arrangement of each component during movement and storage. And to facilitate the storage.

The present invention as described above provides a grip space during the driving process, while the steering wheel (10) and the handle post 10 to provide a coupling space of the components such as the brake lever (9), and the handle A handle column 20 rotatably supporting the post 10, a front wheel fork 30 coupled to the lower end of the handle post 10 to support the front wheel 21, and an upper portion supporting each component. A horizontal frame 40 and a lower horizontal frame 50, a seat post 60 to which the seat 52 is liftable and coupled to an upper portion, and an upper yoke 70 and a seat post 60 of the handle column 20. An upper horizontal frame 40 interposed therebetween, and a rear wheel fork 80 and a reinforcement frame 90 to which the rear wheel 72 and the transmission 73 are coupled.

The handle post 10 provides a holding space and at the same time provides a coupling space of a braking device such as a brake lever 9, the connecting post 1 from the top of the inner circumferential surface so that the height can be adjusted according to the height of the occupant The liftable couple is coupled.

At this time, the stem (2) is coupled to the upper portion of the connecting post (1), and the center of the clamp (C) by interposing the clamp (C) is intermittent rotation by the operation of the lock (L) To have a folded or standing state.

On the other hand, the handle post (10) forms square through holes at both ends of the stem (2), and the inside of the square through holes grips (3, 4) having a square cross section detachably, An elastic member such as a tension coil spring or a bungee cord is connected between the grips 3 and 4 to connect the grips 3 and 4 via the stem 2, and the stem 2 The separation of the grip (3,4) is prevented, and when not in use of the present invention is to be separated by withdrawing the grip (3,4) from the stem (2).

The handle post 10 is rotatably coupled from the handle column 20 to enable steering of the front wheels 21 during the driving process. The handle for rotatably supporting the handle post 10 as described above. The column 20 has the upper yoke 70 and the lower yoke 12 horizontally attached to both ends of the outer circumferential surface thereof, and the front wheel fork 30 is coupled to the lower end of the handle post 10 protruding through the lower side.

The front wheel fork 30 is to rotate the left and right in accordance with the rotation of the handle post 10 to achieve the steering of the present invention, through the clamp (C) that the rotation is interrupted in accordance with the action of the lock (L). It is connected integrally with the handle post 10, the front wheel 21 is coupled to the inner side of the tip.

Subsequently, the upper horizontal frame 40 hinged to the upper yoke 70 of the handle column 20 is interposed on the handle column 20 and the seat post 60, and the handle column (via a pin) By combining with 20) it is possible to link movement within a certain range, the lower horizontal frame 50 is arranged in parallel.

The lower horizontal frame 50 supports the handle column 20 and the seat post 60 together with the upper horizontal frame 40, and one side of the lower horizontal frame 50 is fixed to the lower yoke 12 of the handle column 20. The hinged connection is arranged in parallel with the upper horizontal frame 40, and forms an extended link portion 50A having an inclined angle upward on the opposite surface of the lower yoke connecting portion, and as the tip of the extended link portion 50A. According to the action of the lock (L) is provided with a clamp (C) for the rotation is interrupted.

Subsequently, the seat posts 60 supported by the upper horizontal frame 40 and the lower horizontal frame 50, respectively, are liftable from the top of the tip so that the height of the seat 52 can be adjusted according to the height of the user. The guide pin 51 and the long hole are coupled to the contact surface with the upper horizontal frame 40 by horizontally protruding the guide pin 51 guided by the long hole 40A of the upper horizontal frame 40. The rotation of the seat post 60 is guided according to the combination of 40A).

In addition, the seat post 60 is hinged from the extension link portion 50A of the lower horizontal frame 50, while the lock L of the clamp C is fixed through the lower end portion of the lock L. According to the action, the lower end is converted into a fixed or rotatable state from the tip of the lower horizontal frame 50.

In addition, the seat post 60 is formed of a repeating refraction portion 60A such that one side of the lower portion of the reinforcement frame 90 to be described later by the repeating refraction portion 60A described above in the state where the folding of the present invention is completed. Interference due to folding is prevented, and the rear wheel 72 is protruded through the cutout 52A during the folding process by forming a cutout 52A at the rear of the seat 52 coupled to the upper part. do.

On the other hand, the seat post 60 is able to adjust the distance with the handle post 10 in accordance with the height and running characteristics of the occupant, and at the same time the fixed state is maintained in a state in which the adjustment with the handle post 10 is completed The upper horizontal frame 40 is connected to keep it.

The upper horizontal frame 40 is interposed between the upper yoke 70 of the handle column 20 and the seat post 60 to support the front of the seat post 60 and from the guide frame 61 to the slider 62. ) Is coupled to be retractable, and the lock (1) is provided at the lower portion so that the slider 62 is fixed from the guide frame 61 in a state in which the slider 62 is completed from the guide frame 61.

Meanwhile, the upper horizontal frame 40 continuously forms an insertion groove (not shown) in which the front end of the lock l is inserted at the lower portion of the slider 62 at equal intervals, and the elastic horizontal force of the upper frame 40 is By allowing the front end of the lock 1 to selectively insert one side of the insertion groove, the appearance of the slider 62 from the guide frame 61 is restricted in a normal state in which no pressing force is applied through the lock 1.

Subsequently, a rear wheel fork 80 is coupled between the seat post 60 and the lower horizontal frame 50, and a pedal crank 75 having a pedal 71 at both ends of the rear wheel fork 80. Are symmetrically coupled to each other, and the other end of the rear wheel 72 is rotatably coupled, and in the inner space formed between the pedal 71 and the rear wheel 72, the chain and the sprocket are repeatedly arranged together with the braking device. A transmission device 73 for transmitting the rotational force generated according to the step pressure of 71 to the rear wheel 72 is coupled.

At this time, the transmission device 73 is a rotation transmitted to the rear wheel 72 through the pedal 71 by increasing the speed of rotation as the number of gears of the driven gear connected to the sprocket increases with respect to the drive gear for driving the chain. Allow the number to increase.

Subsequently, the rear wheel fork 80 described above folds the pedal crank 75 from the inner side of the crank connecting member 76 having the guide groove 76A as shown in FIGS. 5A, 5B, and 5C. The pedal 71 and the pedal crank during the movement or storage process by repeatedly folding the pedal 71 and the pedal crank 75 when not in use of the present invention by rotatably coupling the pedal 71 to the tip of the pedal crank 75 It is possible to minimize the elongated length and thickness of the crank (75).

At this time, the seat 52 is provided between the rear wheel fork 80 and the seat post 60 by installing a reinforcement frame 90 having a clamp C therein that is rotated according to the action of the lock L. And supporting the rear surface of the seat post 60 to prevent deformation of the seat post 60 and the like, and to allow stable running.

On the other hand, in the above-described components of the present invention, the handle post 10, the front wheel fork 30, the lower end of the extended link portion 50 of the horizontal frame 50 and the clamp (C) provided on one side of the reinforcement frame 90 As shown in Figure 4a and Figure 4b is a hinge pin (P) rotatably coupled to each connecting portion (A, B), the other end of the hinge pin (P) has a locking hook (H) having an inclined surface It is formed, and the opposite surface of the locking hook (H) has a structure that rotatably coupled the lock (L) coupled to the locking hook (H) by the elasticity of the torsion spring (S).

Accordingly, when each connecting portion (A, B) connected by the clamp (C) is located in a straight line, the tip of the lock (L) is moved through the inclined surface of the locking hook (H) to separate the through the lock (L) Each connection portion (A, B) is to be fixed without operation, and when folding each component of the present invention, the front end of the lock (L) is caught by pressing the lower end of the lock (L) in the direction of the arrow While being separated from the hook (H), it is possible to rotate the respective connection portion (A, B) around the hinge pin (P).

At the same time, both ends of the lock L are provided with protrusions ('D' in the figure) to prevent the lock L from being excessively recessed inside the locking hook H.

On the other hand, the portable bicycle 100 according to the present invention, by applying a lightweight material, such as aluminum or dralumin or titanium to parts other than the transmission, such as a sprocket and a chain, and a bearing coupled to the rotating part of the ultra-light configuration Make it possible.

In the figure, reference numeral C1 denotes a clamp that regulates the height of the seat, and C2 denotes a clamp that regulates the lifting and lowering of the connecting post 1 from the handle post 10.
7 is a view schematically showing a shifting process of the transmission of the present invention.
As shown in FIG. 7, the transmission 73 includes a chain 76 for transmitting the rotational force of the pedal 71, a first sprocket 75 having a small direct rotation rotated by the chain 76, and such a first one. It consists of a combination of a sprocket 75 and a second, larger sprocket 74, which is formed concentrically.
When the chain 76, the first sprocket 75 and the second sprocket 76 are arranged in succession, the rotation speed thereof gradually increases. The final first sprocket 75 is directly connected to the rear wheel 72 via the chain 76.
Therefore, the rotational force of the pedal 71 is transmitted to the rear wheel 72 by increasing the rotation speed while passing through the first sprocket 75 and the second sprocket 74 several times.

The operation and effects of the present invention having the above-described configuration will be described below with reference to FIG. 6.

The portable bicycle 100 according to the present invention has a function as a means of transportation and recreational means as well as a means of transportation as a conventional bicycle.

The present invention has a state in which the handle post 10 is raised as shown in FIG. 6A in a normal state for driving purposes, while the front wheel fork 30 and the reinforcement frame 90 are extended in a straight line, and the upper portion is The horizontal frame 40 and the lower horizontal frame 50 have a parallel state.

In such a state, the gap between the grips 3 and 4 and the seat 52 coupled to the handle post 10 and the distance between the pedal 71 and the seat 52 have a state spaced appropriately for an adult's body. Normal driving is possible, such as a bicycle having a conventional structure, and in particular, the chain 76 and the first sprocket 75 and the second sprocket 74 are transmitted through the pedal 71 by a transmission arrangement 73 repeatedly arranged. High speed driving is possible by increasing the number of rotations.

In this process, when traveling in conjunction with public transportation such as buses or subways, or minimizing the size of the present invention for movement and storage, while folding each part of the clamp (C) while being rotatable Rotate the sites respectively.

That is, the upper end of the handle post 10 connected through the clamp C is folded, and the front end of the lock l is separated from the insertion groove of the slider 62 so that the seat post 60 including the seat 52 is opened. Rotate in the direction of the arrow as shown in Figure 6b.

Subsequently, after the above-described process is completed, the lock L of the clamp C coupled to the extension link portion 41 of the lower horizontal frame 50 is released to release the seat post 60 by the lower horizontal frame 50. Removing the clamping force of the clamp, the lock (L) of the clamp (C) coupled to the reinforcement frame 90 to rotate the handle post 10 and the seat post 60 backward as shown in Figure 6c, the process described above After completion of the front wheel fork 30 including the front wheel 21 to release the clamp (C) connected between the front wheel fork 30 and the handle post 10 as shown in 6d, pedal crank 75 and pedal (71) is repeatedly folded.

The present invention, the folding is completed according to the above process, the ultra-lightweight by applying a lightweight material such as aluminum or dralumin or titanium, while the handle post (10) located at the top in the folded state is completed, Unnecessary space between the rear fork 80 is removed, and at the same time the distance between the seat 52 and the front fork 30 can be minimized.

That is, the present invention can be folded in a width of about 25cm and the width of about 50cm in the finished state on the basis of an adult having a height of 175cm, it is possible to store through the equivalent size of the bag, bus or It is possible to load through the shelves provided in the subway.

As described above, the portable bicycle 100 according to the present invention can be configured with ultra-light weight by using a lightweight material such as aluminum and drallumin or titanium, and handles the upper horizontal frame 40 and the lower horizontal frame 50. Rotationally coupled from the column 20 and the seat post 60, and foldable configuration of the pedal crank 75 including the handle post 10 and the pedal 71 to minimize the size of the driving characteristics when not in use There are effects such as being convenient to carry and move without deterioration.

While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to the embodiments described above, it is common in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with knowledge will be able to make various variations.

Claims (4)

The upper end of the inner circumferentially connecting the connecting post (1), and the two sides of the stem (2) attached horizontally from the top of the connecting post (1) detachably engages respectively On one side, handle post (10) having a clamp (C) is the rotation is interrupted in accordance with the action of the lock (L); A handle column 20 coupled to a lower portion of the outer circumferential surface of the handle post 10 to support rotation of the handle post 10, and horizontally attaching the upper yoke 70 and the lower yoke 12 to both ends of the outer circumferential surface. ; It is connected integrally with the handle post 10 via the clamp C, the rotation of which is controlled by the action of the lock (L), the steering is made in accordance with the rotation of the handle post 10, the front wheel inside the tip A front wheel fork 30 to which 21 is coupled; An upper horizontal frame 40 hinged to the upper yoke 70 of the handle column 20, the other end of which forms a long hole 40A; One end portion is hinged to the lower yoke 12 of the handle column 20 is arranged in parallel with the upper horizontal frame 40, the extending link portion 41 of the inclined angle upward to the opposite surface of the lower yoke connection portion A lower horizontal frame (50) having a clamp (C) formed at the front end of the extension link portion (41) and the rotation being interrupted by the action of the lock (L); It is hinged from the extending link portion 41 of the lower horizontal frame 50 and rotates according to the action of the clamp C, and the seat 52 is coupled to the upper end of the lower horizontal frame 50, and is in contact with the upper horizontal frame 40. The seat post 60 protrudes horizontally the guide pin 51 which is guided by the long hole 40A of the upper horizontal frame 40; Interposed between the upper yoke 21 and the seat post 60 of the handle column 20 to support the front of the seat post 60, the guide frame 61 by the action of the lock (l) coupled to the lower An upper horizontal frame 40 on which expansion and contraction of the slider 62 is interrupted; It is rotatably coupled from the connecting portion of the lower horizontal frame 50 and the seat post 60, the pedal crank 75 having a pedal 71 on both sides of the front end is symmetrically coupled, the other end of the rear wheel 72 ) Is rotatably coupled, and the gearbox is configured to repeatedly arrange the chain and the sprocket between the pedal 71 and the rear wheel 72 to increase and transmit the rotational force generated according to the stepping pressure of the pedal 71 to the rear wheel 72. Rear wheel fork 80 with 73; It is interposed between the seat post 60 and the rear wheel fork 80 to support the rear surface of the seat post 60, the reinforcement through the clamp (C) to the rotation is interrupted in accordance with the action of the lock (L) inside Portable bicycle, characterized in that consisting of a frame (90). The method according to claim 1, the handle post 10, and forms a rectangular through hole at both ends of the stem (2), the inside of the square through hole detachably engages the grip (3, 4) having a square cross section, Portable bicycle, characterized in that the elastic member is connected between the grip (3, 4) so that the contracting force acts. The said rear wheel fork 80 folds together the pedal crank 75 from the inner side of the crank connecting member 76 which has the guide groove 76A, and it is to the front-end | tip of the said pedal crank 75. Portable bicycle, characterized in that the pedal 71 rotatably coupled. The method according to claim 1, wherein the clamp (C), by the hinge pin (P) rotatably coupling each connecting portion (A, B), one end of the hinge pin (P) has a hook hook having an inclined surface ( H) is formed, characterized in that the opposite surface of the locking hook (H) is rotatably coupled to the lock (L) coupled to the locking hook (H) by the elasticity of the torsion spring (S) bicycle.

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