KR20110030025A - A foldable and portable bicycle - Google Patents

Abstract

PURPOSE: A foldable and portable bicycle is provided to be folded using multi-joints to be conveniently transferred through public transportation. CONSTITUTION: A foldable and portable bicycle comprises a frame(10), a saddle(30), a handle bar(40), a driving member(50), and a driven member(70). The frame comprises top links(14,24), bottom links(16,26), and a forward support(52). The top link and bottom links are connected to have the motion in joints by inserting a slider(22) in a main bar(12). The forward support is installed in the joint part of the bottom link. The saddle is installed in the joint part of the top link of the frame. The steering wheel comprises a steering wheel and a brake steering wheel and inserts a stopper in the leading end of the main bar. The driving member upward supports the drive wheel on the forward support of the frame. The driving member concentrically supports a driven wheel(66) and a front-wheel(65). The driving member transfers the pedaling to the front-wheel force through the drive wheel and driven wheel. The driven member inserts a rear supporting stand(72) and steering stick(76) in the rear side of the main bar to rotate and steel .

Description

A foldable and portable bicycle

The present invention relates to a portable folding bicycle, and more particularly, to a portable folding bicycle that can be folded to a minimum by the articulated joints, which is portable, convenient to move, and less burdensome in storage.

Recently, interest in the use of leisure activities is increasing due to the expansion of the five-day workweek and increased interest in well-being. Especially, the explosive growth of the bicycle leisure population is expected to continue due to the government's policy drive. However, inconvenience in moving to a desired place before or during a bike exercise or storing it after a workout may be an obstacle to an increase in demand.

"Foldable bicycle" of the Korean Patent Publication No. 1995-009009 is "fixed shaft (circle 7) inserted between the upper and lower supporting members (5a, 5b) of the front and rear frames (1) and (2) fixed shaft ( 8), the bicycle can be easily folded in half by a simple operation of rotating around the center.

In the case of the "folding bicycle" of Korean Patent Laid-Open Publication No. 1985-0004427, "with a means for folding the inter-manipulator assembly and the saddle-assembly assembly adjacent to any part of the frame to be substantially flat with the frame. '' Initiate.

According to the "folding bicycle" of Korean Patent No. 0646019, "the front wheel assembly can be folded by rotating the front wheel fork 4 by 180 degrees and folding toward the lower tube 2, whereby the front wheel (3) to partially insert into the gap 2 '. In addition, the handle and pedal are shown as foldable.

However, according to the above-described prior art, there is still a disadvantage in that it is inconvenient to carry by using public transportation such as a subway or a subway because there is a limit in folding efficiency because structural folding parts cannot be installed.

As another example, the seatless folding power bicycle of Korean Patent Publication No. 996-0004438 has the disadvantage that it is possible to fold it in the simplest and smallest form, but cannot secure a large demand group because it is related to the power bicycle.

An object of the present invention for improving the conventional problems as described above is to provide a portable folding bicycle that can be folded to a minimum by the articulated and portable, easy to move and less burden on storage.

In order to achieve the above object, the present invention provides a frame having an anterior zone in the joint portion of the upper link and the lower link to the joint movement through the slider, the front portion of the lower link; A saddle installed at a joint portion of the upper link of the frame; A handle installed at a distal end of the main bar via a stopper and having a steering wheel and a brake wheel; A driving means supporting the driving wheel upward on the front support of the frame, supporting the driven wheel and the front wheel concentrically downward, and transmitting the stepping force to the front wheel through the driving wheel and the driven wheel; And driven means for supporting the rear wheels 85 so as to be rotatable and steerable through a rear support and a steering wheel at the rear end of the main bar.

In addition, according to the present invention, the frame is characterized by having a slider side shock absorber attached to the front end of the slider and in contact with the stopper, and a link side shock absorber connecting the front support 52 to the lower link.

In addition, according to the present invention, the saddle and the handle are characterized in that the coupling is fastened for quick angle adjustment or disassembly.

In addition, according to the present invention, the steering wheel of the handle is connected to the rear support and the steering wheel via one cable, the braking handle is characterized in that connected to the brake via the other cable.

In addition, according to the present invention, the driving means has one to two front wheels concentrically on the front support, and drives the driven wheel and the front wheel by the pedal force connected to the center of the driving wheel, the driving wheel and the driven wheel The transmission is characterized by being selected from the chain method, belt method, gear method, friction method.

In addition, according to the present invention, the driven means is characterized in that for supporting the rear wheel via the steering shaft and the steering wheel on the rear support is fixed to the lower end of the main bar.

In addition, according to the present invention, the frame further includes a case-type cover which is automatically received when the frame is folded in whole or at least partially together with the saddle, the handle, the driving means, and the driven means, and the case-type cover has a hinge, a handle and a driven member. It is characterized in that it comprises a opening and closing button for opening and closing the case-shaped cover on the side where the means is folded.

According to the portable folding bicycle of the present invention as described above, it can be folded to a minimum by the articulated joint, is stored in the case type cover fixed to the frame in the folded state at the same time folded, the length of the slide bar mounted on the case type cover It is easy to move by car or public transportation when moving, and it is possible to carry and enter indoors such as classrooms, auditoriums, theaters, etc. have.

In addition, the use of bicycles can be used before and after public transportation, and the use of bicycles at school, commute to work and travel destinations is expected to significantly increase the use of bicycles.

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

1 is a block diagram showing the bicycle according to the invention as a whole, Figure 2 is a block diagram showing the cutting of the bicycle of Figure 1 AA 'and BB', Figure 3 is a block diagram showing the main portion of the bicycle according to the present invention 4 is a configuration diagram showing the handle of the bicycle according to the present invention, Figure 5 is a configuration diagram showing the driven means of the bicycle according to the present invention, Figure 6 and Figure 7 shows a folded state according to the invention It is a block diagram showing.

Frame 10 according to the present invention is a structure in which the upper link (14) 24 and the lower link (16) 26 on the main bar (12) through the slider 22 to be articulated. It has an anterior support 52 at the joint of the lower links 16 and 26. Bicycle of the present invention is a form in which the saddle 30, the handle 40, the drive means 50, the driven means 70 is assembled in a multi-joint form on the frame 10. Hereinafter, for convenience of understanding, the connecting shaft (or hinge shaft) installed in the joint is omitted. 'Front' and 'rear' are set to mean the front and the rear, respectively, based on the direction of the bicycle.

In the frame 10 of the present invention, the upper link 14, 24 and the lower link 16, 26 are connected to the main bar 12 through the slider 22 so that articulation is possible. The main bar 12 uses a pipe member having a cross section such as a circle, an ellipse, a square, and each member such as a c-section, and various types of deformations or combinations of two or more thereof. At both ends of the main bar 12, a means (e.g., a flat portion, a cutout, a penetrating portion, etc.) for coupling with the main parts described later is formed, and is coupled using a key groove or a member having an equivalent function. The upper links 14 and 24 are located above the main bar 12, and the lower links 16 and 26 are located below the main bar 12. The upper first link 14 and the lower first link 16 are somewhat bent or curved to avoid interference, and the upper second link 24 and the lower second link 26 are for convenience of molding. It should be straight. Lower ends of the upper first link 14 and the lower first link 16 are hingedly connected to the rear support 72 to be described later, and upper ends of the upper second link 24 and the lower second link 26 are sliders. It is hinged to 22. The slider 22 is reciprocally mounted on the main bar 12. Accordingly, when the position of the slider 22 is changed on the main bar 12, the upper links 14, 24 and the lower links 16, 26 are unfolded or folded around the main bar 12 like umbrellas. All.

At this time, the frame 10 of the present invention is attached to the front end of the slider 22, the shock absorber 62 is in contact with the stopper 28, and the shock absorber for connecting the front support 52 to the lower link (16, 26) 62 is provided. The front support 52 may be connected to another position to space the connecting portions of the lower links 16 and 26, as shown in FIG. It may be. The upper shock absorber 62 is attached to the slider 22 to contact the stopper 28 to alleviate the impact mainly transmitted from the main bar 12 to the saddle 30, and the link shock absorber 64 is the front support ( 52 and the lower first link 16 is connected to alleviate the impact mainly transmitted from the ground to the handle 40. The slider side shock absorber 62 uses a spring or a cushion, while the link side shock absorber 64 uses a gas or a spring.

On the other hand, one end of the shock absorber 64 is installed on the lower first link 16 via the sleeve 63, and the configuration in which the sleeve 63 is fixed with the pins 67 in terms of folding and unfolding the bicycle. It is convenient. The pin 67 penetrates through the sleeve 63 to be inserted into a plurality of holes (not shown) formed in the lower first link 16.

In addition, according to the present invention, the saddle 30 is installed in the joint portion of the upper links 14 and 24 of the frame 10. Saddle 30 has a cushion bar 32 on the top. The cushion bar 32 is a form in which a cushioning material is wrapped on a short cylinder, which is advantageous in that the width of the cushion bar 32 is narrower than that of a conventional saddle, but the conventional general saddle is not excluded. The saddle 30 maintains the locked state at an upright or proper inclination angle at the joint portion where the upper first link 14 and the upper second link 24 are connected, but releases the lock as necessary, such as folding the bicycle to a minimum size. It is better to choose a rotating structure. Embodiments of engaging (locking) the saddle 30 refer to the description of the handle 40 described later.

Meanwhile, in the present invention, the upper links 14 and 24 and the saddle 30 are portions to which three members are connected, and the upper first link 14 having the straight end portion has the upper second link having the U-shaped end ( 24 is wrapped and the upper second link 24 can be combined in such a way that the saddle 30 with the U-shaped end is wrapped. In the present invention, the same method applies to the coupling of other joint parts.

In addition, according to the present invention, a handle 40 having a steering wheel 45 and a braking handle 46 is installed at the tip of the main bar 12 via a stopper 28. The handle 40 has a steering wheel 45 and a braking handle 46 on both sides based on the grip bar 42 of a type that covers a protective resin on a short cylinder. It may be advantageous but does not preclude conventional collapsible handles. The handle 40 maintains an upright lock state on the stopper 28 fixed to the tip of the main bar 12, but when the bicycle is folded to a minimum size, the lock 40 is preferably released to rotate. The steering handle 45 and the braking handle 46 are installed on both sides of the handle 40 so as to be operated by hand, and detailed configurations and operations will be described later. The stopper 28 is fixed to the tip of the main bar 12 to restrain the slider 22 from leaving.

At this time, the saddle 30 and the handle 40 are coupled with fasteners 34 and 44 for quick angle adjustment or disassembly. Fasteners 34 and 44 are mechanical elements that perform a lock function, and in particular, may be configured to be operated by hand without a separate tool. For example, as shown in FIG. 2, a locking shaft 34b is installed on a hinge connecting the upper first link 14 and the saddle 30, and a spline 34c is formed at one end of the locking shaft 34b, and the locking shaft The spring 34d and the cam lever 34a are respectively connected to one end and the other end of the 34b. Accordingly, when the cam lever 34a is pressed, the spline inch 34c is engaged and the rotation is locked. On the contrary, when the cam lever 34a is raised, the lock is released to allow angle adjustment or disassembly of the saddle 30. In addition, as shown in FIG. 4, the boss of the link connection part may be cut and then the cam lever of 44a, the hinge shaft of 44b, and the lock pin of 44c may be mounted. Accordingly, when the cam lever 44a is pressed, the lock pin 44c is pulled to restrict the rotation of the handle 40, and when the cam lever 44a is raised, the angle of the handle 40 can be adjusted and folded. In the case of such fasteners 44, forming the splined type on the connecting shaft further improves the locking function. The former fasteners 34 operate in the axial direction and the latter fasteners 44 operate in the circumferential direction, and can be applied to the saddle 30 and the handle 40 without being distinguished.

At this time, the steering wheel 45 of the handle 40 is connected to the rear support 72 via one cable 47, the braking handle 46 to the brake 75 through the other cable 48. Connected. The configuration and action of the steering wheel 45 to be connected to the rear support 72 of the driven means 70 to be described later will be described later. The braking handle 46 is connected to the brake 75 located in the driven means 70 as well as the brake located in the driving means 50, although not shown in the drawing.

Although not shown in the drawing, the slider 22 of the frame 10 may be provided with a clamp for fixing at an arbitrary point on the main bar 12. The clasp forms a through hole at a plurality of points of the main bar 12 and inserts a locking pin, a method of applying a friction force to the main bar 12 by tightening with a bolt or a lever, and a spiral to the main bar 12. Forming and meshing with adjusting nuts. The former method is preferred in that it does not arbitrarily be released by vibration caused by the bicycle.

Further, according to the present invention, the driving means 50 for transmitting the stepping force to the front wheel 65 through the driving wheel 56 and the driven wheel 66 is driven upward on the front support 52 of the frame 10. While supporting (56), the driven wheel (66) and the front wheel (65) are concentrically supported downward. The driving means 50 connects the central portion of the front support 52 to the joint portion of the lower link 16, 26, and drive wheels 56 and driven wheels 66 at the top and bottom of the front support 52. The front wheel 65 is attached. Thus interposing the front support 52 for the support of the front wheel 65 is due to the advantage to impart a buffer action by the shock absorber 64 described above.

At this time, the driving means 50 is provided with one to two front wheels 65 concentrically on the front support 52, driven by the pedal of the pedal (55) connected to the center of the driving wheel (56) 66 and the front wheel 65, the transmission of the drive wheel 56 and the driven wheel 66 is selected from the chain method, belt method, gear method, friction difference method.

In the present invention, as shown in FIG. 2 (b), one front wheel 65 is used as a basic structure. However, the use of two front wheels 65 as shown in FIG. 2 (c) balances the driving wheel 56 and the driven wheels 66, minimizes the interference when folded by reducing the size, and improves stability when driving. The reason for the improvement is considered.

In the driving means 50, the front support 52 is a link member of a slightly bent shape and through holes are formed at the top and bottom of the through holes of the bent portion, respectively. The tip through hole of the lower first link 16 and the bottom through hole of the upper second link 26 coincide with the center through hole of the front support 52 and are connected by a hinge axis. The center of the drive wheel 56 is connected to the upper through hole of the front support 52 by a hinge shaft (not shown), and the pedal 55 is mounted through rods 54 at both ends of the hinge shaft. The center of the driven wheel 66 is connected to the lower through hole of the front support 52 by a hinge axis (not shown). As such, when the driving wheel 56 and the driven wheel 66 are mounted at the set position of the front support 52, the connection state is stably maintained.

 The driving wheel 56 and the driven wheel 66 may be a chain method, a belt method, a gear method, a friction difference method. In the case of the chain method, the driving wheel 56 and the driven wheel 66 are spaced apart and connected to each other by a chain. The belt method is the same as the chain method, and a belt with high strength / wear resistance is used instead of the chain. In the case of the gear type, the size of the driving wheel 56 and the driven wheel 66 is enlarged and an idle gear is interposed in the middle, and the driving wheel 56 is slightly larger than the driven wheel 66 to increase the speed. . Friction difference method uses materials with good sliding resistance and abrasion resistance, and connects them through an idle roller in the middle.

In addition, according to the present invention, the driven means 70 supports the rear wheels 85 to enable rotation and steering movement through the rear support base 72 and the steering wheel 76 at the rear end of the main bar 12. The driven means 70 fixes the rear support 72 located at the rear end of the main bar 12 and enables the steering wheel 76 to be steered through the steering shaft 74 on the rear support 72. The rear wheel 85 is rotatably installed on the steering wheel 76. The rear support 72 has a U-shaped view of the connecting portion of the upper side to form a through-hole communicating with the upper and lower ends and is coupled to the main bar 12 in a spiral or bolted manner. A through hole is formed in the lateral direction from the upper body of the rear support 72, one side through hole is connected to the rear end of the upper first link 14 by a hinge axis, and the other through hole of the lower first link 16 Connect the rear end with the hinge shaft. Steering shafts 74 to be described later are coupled to concentric through-holes formed in the front-rear direction in the lower body of the rear support 72.

At this time, the driven means 70 of the present invention supports the rear wheels 85 through the steering shaft 74 and the steering wheel 76 on the rear support 72 is fixed to the lower end of the main bar 12. .

The driven means 70 has a rear support 72 which connects the upper first link 14 and the lower first link 16 at the rear end of the main bar 12, on the rear support 72. The rear wheels 85 are supported through the steering shaft 74 and the steering wheel 76. The rear support 72 has a through-hole in the upper and lower ends and is coupled to the main bar 12 in a spiral or bolted manner or in a manner of fitting pins and bolts from the side and the side. A rear end of the upper first link 14 is connected to a hinge shaft at an upper through hole of the rear support 72, and a rear end of the lower first link 16 is connected to a lower axis at a lower through hole. Steering wheel 76 is T-shaped when viewed from the side, the main bar 12 is coupled to the upper body and the steering shaft 74 is installed in a direction orthogonal thereto. The lower body of the steering wheel 76 has a cantilever shape to form a through hole at the bottom thereof, and supports the rear wheel 85 as a drive shaft. The cantilever structure of the steering wheel 76 as described above is to minimize interference when the rear wheel 85 is folded. Of course, when the rear wheels 85 are stretched and run as shown in FIGS. 2A and 5, the vertical axis of the rear wheels 85 and the center of the main bar 12 coincide.

Steering wheel 76 of the driven means 70 is characterized in that connected to the steering wheel 45 via the cable 47. The steering wheel 45 mounted on one side of the handle 40 is connected to the left and right sides of the steering wheel 76 using two cables 47, respectively. Accordingly, when the steering wheel 45 is rotated, the steering wheel 76 rotates to one side so that the rear wheel 85 is inclined and steering of the bicycle is possible. The bicycle of the present invention may be provided with a band-type or V-type brakes 75 which are common in the bicycle field. The brake 75 is connected to the brake handle 46 mounted to the handle 40 via a cable 48. Cables 47 and 48 use a sheathed form as usual.

In addition, the fender 86 and the pedestal 88 can be installed on the rear support 72 of the present invention. Mudguard 86 is installed so as to surround the upper end of the front wheel 65 and the rear wheel 85, the pedestal 88 is installed in a structure that is rotated to contact the ground.

Although not shown in the drawings, the present invention may be configured to illuminators for use at night. The lighting lamp is mounted on the front stopper, and is mounted on the lower first link, and the electric power generated by the generator operating according to the driving of the driving wheel is applied to the electric wire cable so that the lamp of the lighting fixture is turned on according to the operation of the switch.

In this case, a storage battery may be installed inside the case to store power generated by the generator.

At this time, according to the present invention, the frame 10 is in contact with the saddle 30, the handle 40, the driving means 50, the driven means 70, in whole or at least partially in order to protect the body or clothes of the user. The case-type cover 90 may be further provided. The case cover 90 is provided with a hinge button 92 that opens and closes the case cover on the side where the hinge 92, the handle 94, and the driven means 70 are folded. Case type cover 90 is the opposite side of the rear wheel folding direction cover can be fixed to the stopper and the rear support bolts, pins, snap rings, etc., and has a handle 94 on the upper surface integrally. The cover in the direction in which the rear wheel is folded is a structure that can be opened and closed with a hinge 92 at the tip, the handle 94 provided on the cover may be a fixed form as shown in Figure 6, the slide bar 96 as shown in Figure 7 You can also use the handle provided with). When the frame 10, the saddle 30, the handle 40, the driving means 50, and the driven means 70 of the present invention are all folded, a predetermined space is formed on the case type cover 90, so that extra space is provided. When partitioned, it can be utilized as the housing 98.

How to use the folded bicycle unfolds as shown in Figure 1, if the rear support 72 and the rear wheel 85 is folded, open the case cover and open, push the slider 22 to the top of the main bar 12, the upper link ( 14) (24), the lower link (16) (26) and the front support including the front wheels are unfolded, and the saddle (30) and the handle (40) are rotated upward and fixed, and the shock absorber (64) is pushed on the sleeve (63). The pole is fixed to the pin 67 or ratchet at the designated position, ready for use. Subsequently, the driving point is carried out while holding both sides of the handle 40 and stepping on the pedal 55, and when the steering wheel 45 is rotated, the rear wheel 85 rotates at a predetermined angle to the left and right, and the direction can be changed and braked. Rotating the handle 46 operates the brake 75 to slow down or stop.

The folding method for carrying or storing may be a method of completely folding as shown in FIG. 6 and a method of selectively folding a part such as a rear wheel and a handle knob as shown in FIG. 7. That is, when the slider 22 is pushed down after releasing the sleeve 63 at one end of the shock absorber 62, the frame including the front wheels 65 is folded at the same time, and then the steering wheel 76 and the rear wheels 85 are folded. When the saddle 30 and the handle 40 are arbitrarily folded, the saddle 30 and the handle 40 can be automatically folded into the case-type cover 90 and the entire bicycle can be stored. Of course, some of the front wheel 65, rear wheel 85, saddle 30, the handle 40 may not be grounded. If some parts of the bicycle are carried or stored without being folded, the case type cover 90 may be partially exposed or covered as shown in FIG. 7. The front wheel protruding from the opening of the case-type cover 90 is folded and made easy to carry around.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

1 is a configuration diagram showing the bicycle according to the invention as a whole,

FIG. 2 is a block diagram showing the bicycle of FIG. 1 cut into lines A-A 'and B-B'; FIG.

3 is a configuration diagram showing the main portion of the bicycle according to the present invention,

4 is a configuration diagram showing the handle of the bicycle according to the present invention separated;

5 is a block diagram showing the driven means of the bicycle according to the present invention,

6 and 7 is a configuration diagram showing a folded state according to the invention.

* Description of the symbols for the main parts of the drawings *

10: frame 12: main bar

14, 16: upper link 22: slider

24, 26: lower link 30: saddle

34, 44 fastener 40 handle

45: steering wheel 46: braking handle

50: drive means 52: front support

56, 66: Gear 62: Shock Absorber

65: front wheel 70: driven means

72: rear support 74: steering shaft

75: brake 76: steering wheel

85: rear wheel 90: case cover

Claims (7)

 The upper links 14 and 24 and the lower links 16 and 26 on the main bar 12 are jointly connected to each other via the slider 22 and connected to the joints of the lower links 16 and 26. A frame 10 having an anterior support 52; Saddle 30 is installed in the joint portion of the upper link (14, 24) of the frame (10); A handle (40) installed at a distal end of the main bar (12) via a stopper (28) and having a steering wheel (45) and a braking handle (46); The drive wheel 56 is supported upward on the front support 52 of the frame 10, the driven wheel 66 and the front wheel 65 are supported concentrically downward, and the drive wheel 56 and driven wheel Driving means (50) for transmitting the stepping force to the front wheel (65) through (66); And A driving means (70) supporting the rear wheel (85) for rotation and steering movement via a rear support (72) and a steering wheel (76) at the rear end of the main bar (12); Portable folding bike. The method of claim 1, The frame 10 is attached to the front end of the slider 22, the slider side shock absorber 62 in contact with the stopper 28, and the link side shock absorber for connecting the front support 52 to the lower links (16, 26) ( 64) A portable folding bike comprising: The method of claim 1, The saddle 30 and the handle 40 is a portable folding bike, characterized in that coupled to the fasteners (34) (44) for quick angle adjustment or disassembly. The method of claim 1, The steering wheel 45 of the handle 40 is connected to the rear support 72 and the steering wheel 76 through one cable 47, the braking handle 46 through the other cable 48, the brake Portable folding bike, characterized in that connected to (75). The method of claim 1, The driving means 50 is provided with one to two front wheels 65 concentrically on the front support 52, driven wheel 66 by the pedal force of the pedal 55 is connected to the center of the driving wheel 56 And a front wheel (65), the driving wheel (56) and the driven wheel (66) is a portable folding bicycle, characterized in that the chain method, belt method, gear method, friction wheel method is selected. The method of claim 1, The driven means 70 is a portable, characterized in that for supporting the rear wheels 85 via the steering shaft 74 and the steering wheel 76 on the rear support 72 is fixed to the lower end of the main bar (12). Folding bike. The method of claim 1, The frame 10 is further provided with a case-type cover 90 which is automatically received when folded in whole or at least partially together with the saddle 30, the handle 40, the driving means 50, the driven means 70. The case cover 90 is a portable folding bicycle, which includes a hinge button 92 that opens and closes a case cover on a side where the hinge 92, the handle 94, and the driven means 70 are folded. .

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