KR19990085803A - Portable folding bike - Google Patents

Abstract

The present invention relates to a portable folding bicycle, which is provided with a front wheel 100 and a rear wheel 200 for driving, and a frame part 300 is provided between the front wheel 100 and the rear wheel 200, and the frame part ( The handle part 400 is provided in front of the 300, and in the center, the driving part 500 is connected to the rear wheel 200, and the frame part 300 includes two rotatable front and rear frames 310. (320) divided by, the handle portion 400 is connected to the front frame 310, the first locking. Release means 600 to enable the front wheel 100 to move while enabling the rotation of the handle portion 400 ) Is provided between the two frames 310 and 320, and is provided with a second ruler, release means 700 for enabling the rotation of the frames 310 and 320, the frame portion 300 Baskets 800 and 810 are respectively provided at the upper portions of the front and rear wheels 200 of the rear wheels 200, and the handle members 820 are pullable from the rear wheels 200. ), It has a function as a general bicycle, the folding operation is complete, its size is very narrow, it is easy to carry and store, and can be used as a shopping cart after folding.

Description

Portable folding bike

The present invention relates to a portable folding bicycle, and more particularly, a portable section that not only functions as a normal bicycle but also folds the bicycle to a minimum size so that it can be easily stored and carried and can function as a shopping cart. It is about a folding bicycle.

In general, a bicycle has a shape in which two wheels are arranged in a straight line along the length direction so that the length is longer than the width. Since such a normal bicycle has a shape having a long structure in the driving direction, it may have a stable feeling in driving. However, when these bicycles are not used, they are large in storage and portable, and occupy a lot of space when they are not used in a small space such as an apartment, such as an apartment. There was a flaw to have. In addition, because of the long length of the elevator elevator or the trunk of a small passenger car required for long-distance movement for the movement of the bicycle there was a lot of inconvenience to move.

Therefore, in recent years, a folding bike that can be greatly reduced in size has been proposed in order to solve such an end, and the folding method of the folding bike is about the middle of the body installed for the frame between the handlebar and the saddle and the front and rear wheels. A hinge is provided at the position so that half of the longitudinal direction can be folded at the position of the hinge, and when the bicycle is driven, an interlock means is provided to prevent the hinge from being folded. It is structured so that folding and unfolding operation may be performed by operating so that it may be released.

However, such a structure has a weak connection part, and it is difficult and complicated to release the locking means when the fixed state is relaxed or the switching to folding and unfolding is frequently caused by repeated impacts that are frequently generated during driving. There was a very inconvenient problem to use.

Accordingly, the present invention has been devised to solve the above-mentioned conventional problems, the function as a general bicycle, the folding operation is complete, its size is very narrow, easy to carry and store, and after folding the shopping cart It is an object of the present invention to provide a folding bicycle that can be used as.

The present invention for achieving the above object is provided with a front wheel and a rear wheel for driving, the frame portion is provided between the front wheel and the rear wheel, the handle portion is provided in front of the frame portion, the center of the bicycle is connected to the rear wheel drive The frame part is divided into two rotatable front and rear frames, and a handle part connected to the front frame is provided with a first locking and releasing means for allowing the front wheel to move while allowing the handle part to rotate. It is provided between the two frames while the second locking and unlocking means is provided to enable the rotation of the frame, and the basket is provided on the front and rear wheels of the frame portion, respectively, and the pull-out handle member is provided on the rear wheel side. It features.

The first locking and disengaging means is provided with a clamp for fitting the handle portion, a coupling member is formed on the bottom of the clamp, the coupling member is coupled to the lower portion of the coupling member, the bush is fitted to the outer peripheral surface of the coupling member The support frame connected to the front wheel is provided with an annular groove for accommodating the bush, through which the coupling screw fits into the coupling member and the coupling member, and accommodates the coupling member and the bush. Another feature is that the through-hole is formed in the front frame.

The bottom of the coupling member has a coupling protrusion protruding cross-shaped, the upper surface of the corresponding connection member is characterized in that the coupling groove is formed.

The clamp has a form in which two plates having their own elastic force are bent and overlapped, through-holes are perforated to pass through the coupling screw on both plates, and at one side, a fitting hole is formed to fit the handle part, and the clamp is released when the coupling screw is loosened. It is characterized in that the coupling projection of the coupling member provided on the bottom and the coupling groove of the connection member is released while opening.

The second locking and releasing means is provided with a fixing member between the front and rear frames, the support jaw protrudes and formed in a state spaced apart in each of the upper and lower frames of the front and rear frames, and folded on both sides of the fixing member, A binding plate is provided at an upper portion of the fixing member, through-holes are formed at both protruding ends of the fixing member, and through-holes are also formed at the supporting jaws of the front and rear frames, and are connected through a support, and screws are screwed at the center of the binding plate. Another feature is to be coupled to the fixing member of the lower portion.

In addition, the bottom of the binding plate is characterized in that the engaging projection is formed to be coupled to the coupling groove formed on the upper surface of the fixing member.

In addition, the other side of the engaging projection of the binding plate is characterized in that the other projection is formed to be caught in the cross-shaped groove formed on the upper surface of the support jaw of the front, rear frame.

In addition, the bottom surface of the fixing member is provided with an annular support member, a rotatable connector is provided in the inner space of the support member, the lower portion of the connector is formed with a through hole in the lateral direction, and a separate coupling member is fitted, Parking footrests are provided at both ends of the coupling member, and one side of the bottom surface of the connector is provided with a locking protrusion, and a locking protrusion is also raised at the bottom of the lower support jaw of the front frame so that the connecting ring is pivoted therebetween. It is done.

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

Figure 2 is an exploded perspective view showing a coupling structure of the handle portion according to the present invention

3 is a cross-sectional view in the combined state of FIG.

(a) is a sectional view of the state before the coupling screw is released from the clamp

(b) is sectional drawing after loosening the coupling screw from the clamp

Figure 4 is an exploded perspective view showing a coupling structure of the frame portion according to the present invention

5 is a cross-sectional view of the combination of FIG.

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5.

7 is a plan view of the frame portion of the present invention;

(a) is the state before folding both frames

(b) is the frame on both sides folded

Figure 8 is an enlarged view showing the frame portion of the present invention from the side

Figure 9 is an exploded perspective view showing a coupling structure of the parking scaffold of the present invention

10 is a schematic view showing a drive gear of the present invention;

11 is a view showing a step of folding the folding bicycle of the present invention

(a) is a side view of the fully expanded state

(b) is a side view of a state in which the front wheel is moved to the frame side by rotating the handle

(c) is a side view of the rotated handle with the bottom folded

(d) is a side view of the saddle lowered

(e) is a side view of the state where the screw which is coupled to the upper part of the pedal part located in the center is loosened

(f) is a side view of a state in which both sides of the frame are collapsed to reduce size;

(g) is a perspective view in which both sides of the frame are folded to reduce size

* Explanation of Signs of Major Parts of Drawings *

100: front wheel

110: support frame

111: round home

200: rear wheels

210: Sprocket

300: frame portion

310: front frame

311: through hole

312,312 ', 321,321': Supporting jaw

312a, 312'a, 321a, 321'a: Through hole

312b, 321b: Cross recess

312'b: Jamming protrusion

320: rear frame

400: handle portion

500 drive unit

501: chain

510: first chain gear

520: 2nd Chain Gear

530: 3rd Chain Gear

540: 4th Chain Gear

600: first ruler / release means

610: Clamp

611: coupling member

611a: engaging projection

612,613: Plate

614 through hole

615: fitting ball

620: connecting member

621: coupling groove

630: Bush

640: coupling screw

700: second ruler / release means

710: fixing member

711,712: protruding end

711a, 712a: Through hole

711b, 712b: round surface

713: coupling groove

720: binding plate

721: engaging protrusion

722: protrusion

721: engaging protrusion

730,740: support

750 screw

760: support member

770: connector

771: through hole

772: Jamming protrusion

780: coupling member

790: Parking Scaffold

791: spring

792: link

800,810: Basket

820: handle member

900: Pedal

1000: Saddle

1010 support

1020: support body

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

1 is an overall perspective view of the present invention, the front wheel 100 and the rear wheel 200 for driving as shown, is provided, the frame portion 300 is provided between the front wheel 100 and the rear wheel 200, The handle part 400 is provided at the front of the frame part 300, and in the center, the driving part 500 is connected to the rear wheel 200, and the frame part 300 has two pivotable front and rear parts. It is divided into the frame 310, 320, the handle portion 400 is connected to the front frame 310, the first rule that allows the front wheel 100 to move while enabling the rotation of the handle portion 400. Means 600 is provided, and is provided between the two frames 310 and 320, the second ruler, unlocking means 700 for enabling the rotation of the frame 310, 320 is provided, the frame portion Upper portions of the front and rear wheels 200 of 300 are provided with baskets 800 and 810, respectively, and the rear wheel 200 has a pullable handle part. There are 820 is provided.

Here, the first ruler unlocking means 600 is provided with a clamp 610 to be fitted to the handle portion 400, as shown in Figures 2 and 3, coupled to the bottom surface of the clamp 610 A member 611 is formed, and a coupling member 620 is coupled to a lower portion of the coupling member 611, and a bush 630 is fitted to an outer circumferential surface of the coupling member 620 and connected to the front wheel 100. The support frame 110 is provided with an annular groove 111 for accommodating and fixing the bush 630, and is coupled to the coupling member 611 and the connection member 620 through the clamp 610. The screw 640 is fitted, and a through hole 311 is formed in the front frame 310 to accommodate the connection member 620 and the bush 630.

In addition, a coupling protrusion 611a protrudes crosswise on a bottom surface of the coupling member 611, and a cross coupling groove 621 is formed on an upper surface of the connection member 620 corresponding thereto.

In addition, the clamp 610 is coupled to the coupling screw 640, the clamp 610 is a state in which the two plates 612, 613 are bent and overlapping, both plates 612, 613 The through-hole 614 is perforated so that the coupling screw 640 passes, and a fitting hole 615 is formed at one side thereof so that the handle part 400 is fitted therein, and has its own elastic force. Accordingly, when the coupling screw 640 is loosened, the clamp 640 opens and the coupling protrusion 611a of the coupling member 611 and the coupling groove 621 of the coupling member 620 provided at the bottom thereof are released. .

In addition, the handle portion 400 is in a state in which the central portion is bent inclined in one direction

The clamp 610 is inserted into the frame side of the bicycle after the handle 400 rotates.

The inclined angle is preferably about 15 degrees.

Meanwhile, as shown in FIGS. 4 and 5, the second ruler / release means 700 is provided with a fixing member 710 between the front and rear frames 310 and 320, and the front and rear frames. The upper and lower portions of the 310 and 320 are spaced apart from each other to support the support jaws 312, 312 ', 321, and 321' so as to fold on both sides of the fixing member 710. A binding plate 720 is provided at an upper portion of the member 710, and through holes 711a and 712a are formed at both protruding end portions 711 and 712 of the fixing member 710, and the front and rear frames 310 are formed. Through holes 312a, 312'a, 321a, and 321'a are also formed in the support jaw 312, 312 ', 321, and 321' of the support 320 to support the support 730 and 740. Is connected through, the screw 750 is screwed to the center of the binding plate 720 is to be coupled to the fixing member 710 of the lower portion.

The protruding end portions 711 and 712 have rounded surfaces 711b and 712b rounded on one surface thereof so that the frames 310 and 320 provided on both sides thereof can be rotated only toward the rounded surfaces 711b and 712b. It is supposed to be.

In addition, a coupling protrusion 721 is formed on the bottom surface of the binding plate 720 to be coupled to the coupling recess 713 formed on the upper surface of the fixing member 710.

In addition, the other projections 722 are formed on both sides of the engaging projection 721 of the binding plate 720 cross-shaped formed on the upper surface of the support jaw 312, 321 of the front and rear frames 310, 320 It is caught by the grooves 312b and 321b.

5 and 9, an annular support member 760 is provided on the bottom of the fixing member 710, and a connector 770 rotatable in the inner space of the support member 760 is provided. The through hole 771 is formed in the lower portion of the connector 770 in a lateral direction so that a separate coupling member 780 is fitted, and the parking pedal 790 is provided at both ends of the coupling member 780. A spring 791 is supported between the lower portions of the parking scaffolds 790.

In addition, as illustrated in FIG. 7, a hooking protrusion 772 protrudes from one side of the bottom surface of the connector 770, and a hooking protrusion 312 ′ b on the bottom surface of the lower support jaw 312 ′ of the front frame 310. ) Is rushed and the link 792 is provided between them to be rotated.

In addition, as shown in FIG. 10, the driving unit 500 includes a first chain gear 510 connected through a chain 501 connected to a sprocket 210 provided at the center of the rear wheel 200. A third chain gear 530 meshing with the second chain gear 520 provided on the front surface of the first chain gear 510 is provided, and an additional pedal 900 meshes with the third chain gear 530. And a fourth chain gear 540 which is connected to it.

In addition, the present invention when the user can sit when the saddle 1000 is folded, the support body 1020 protruding from the lower portion of the support 1010 that is supporting the lower portion of the saddle 1000 is folded folded. It is inserted in.

In the present invention configured as described above, as shown in FIG. 1, the vehicle may be driven in a fully unfolded state, and the driving principle may be driven by interlocking each gear and chain constituting the driving unit 500 as shown in FIG. 10. As is possible, this is a well-known technique, and a detailed description thereof will be omitted.

If you need to store and carry, or if you want to use as a shopping cart, you can fold the fully extended bike to use, which will be described in detail below.

That is, when the handle part 400 is rotated as shown in FIG. 11 (b), as shown in FIG. 3 (a), the handle part 400 is tightened to the clamp 610 by the coupling screw 640 to clamp the clamp. 610 is also rotated at the same time. Then, since the coupling member 611, the connecting member 620, the bush 630 and the support frame 110 are all coupled to the lower portion of the clamp 610 is rotated at the same time, the front wheel 100 is forward The position is moved inward of the frame 310.

In this state, when the handle part 400 is to be folded, it is necessary to turn it downward after releasing the first locking / release means 600, which is fastened as shown in FIGS. 2 and 3. When the coupling screw 640 is turned in one direction, the coupling member 611 is protruded and formed in the lower portion of the coupling screw 640, and the coupling member 620 is fitted in the lower portion of the coupling screw 611. Under the bush 630 is fixed to the ring groove 111 of the support frame 110 is connected to the front wheel 100, when the coupling screw 640 is in a loose state to form a clamp 610 by its own elastic force As the gap between the two plates 612 and 613 is widened, the fitting hole 615 of the position where the handle part 400 is inserted is loosened to expand and the handle part 400 is turned, and FIG. 3 ( As shown in b), the movement of the coupling member 611 which is teleported upward and provided on its bottom surface The projection (611a) is disengaged from the engagement groove 621 of the coupling member 620 is able to rotate in one direction.

Here, the coupling member 611 and the connection member 620 are coupled to each other in a state in which the coupling protrusion 611a and the coupling groove 621 are cross-shaped, respectively, the coupling member 611 provided on the bottom surface of the clamp 610. Even if the arrangement state of the coupling protrusion 611a of the) is changed, it may be easily coupled to the coupling groove 621 of the connection member 620.

Then, the handle portion 400 set in the upward direction is bent downward so as to be in a state as shown in FIG. 11 (c). The handle portion 400 is bent so that its central portion is inclined in one direction. When the handle part 400 is tilted downward, the handle part 400 is not disposed in the vertical direction and is in a state in which the handle part 400 is biased in one direction.

Thereafter, as shown in (d) of FIG. 11, the lower support 1010 is inserted into the support tube 1020 to reduce the height of the saddle 1000.

Subsequently, as shown in FIGS. 11E and 11F using the second locking / release means 700 provided at the position of the pedal 900, before the frame portion 300 is formed, The rear frame 310, 320 is folded.

That is, as shown in FIGS. 5 and 6, when the screw 750 is loosened, the binding plate 720 positioned at an upper portion thereof becomes loose with the fixing member 710 disposed below, and then fixed. The front frame 310 located on one side about the member 710 is rotated inward of the bicycle.

At the time of rotation, the support frame 312, 312 'is protruded and formed at the upper and lower portions of the front frame 310, and the protruding end portion 711 is provided at the side of the fixing member 710 to be in contact with each other. Being coupled through the support 730. Accordingly, when the front and rear frames 310 and 320 are turned, the supports 730 and 740 located at both sides of the fixing member 710 rotate smoothly while acting as axes.

Here, one side of the protruding end portions 711 and 712 formed on both side surfaces of the fixing member 710 is formed of rounded rounded surfaces 711b and 712b so that the front and rear sides of the fixing members 710 are rounded. The rear frame 310, 320 may be rotated, and if the front frame 310 is rotated toward the opposite surface (perpendicular surface) rather than the rounded surfaces 711b and 712b, the front and rear frames 310 ( 320), it becomes impossible to rotate. Therefore, it is always rotated only toward the rounded surfaces 711b and 712b.

In addition, cross-shaped grooves 312b and 321b are formed on upper surfaces of the support jaws 312 and 321 formed on the front and rear frames 310 and 320, and a binding plate 720 coupled thereto. Protrusions 722 are formed on both sides of the bottom of the bottom surface, and the binding plate 720 is formed in the cross-shaped grooves 312b and 321b when the front frame 310, which has been changed in direction, is to be coupled to the binding plate 720 again. Insert the protrusions 722 and tighten the screws 750 that have been loosened.

On the other hand, as shown in Figure 7, the bottom of the fixing member 710, as shown in Figure 9, the cylindrical support member 760, the connector 770 and the through hole formed in the side of the connector 770 Parking footrest 790 is provided at both ends of the coupling member 780 inserted into the 771, the engaging projection 312'b formed on the lower portion of the front frame 310 is formed with a projection projection (312'b) In addition, while the engaging projection 772 is protruded on one side of the bottom surface of the connector 770, while the connecting ring 792 is connected therebetween, and the front frame 310 is rotated, the engaging projection (front) of the front frame 310 ( 312'b) is moved as shown in FIG. 7 (b), and the locking protrusion 772 on the side of the connector 770 connected through the connection ring 792 is rotated accordingly. Accordingly, the parking scaffold 790 coupled to both sides is also rotated through the coupling member 780 inserted into the through hole 771 of the connector 720 that rotates.

In this way, as shown in FIG. 11 (f), the overall size of the bicycle is narrowed. Finally, by pulling the handle member 820 installed on the rear wheel 200 side basket 810 in the upward direction, the user can comfortably carry the shopping cart while dragging it as a shopping cart. Of course, it is possible to store a variety of things in the basket (800, 810) located in the front, rear.

As described above, the present invention, as well as functions as a general bicycle, greatly reduces its size, and is very convenient when storing or carrying, and even when you want to enjoy shopping in a shopping center, etc. It has the advantage of being versatile.

Claims (8)

The front wheel 100 and the rear wheel 200 for traveling are provided, and the frame part 300 is provided between the front wheel 100 and the rear wheel 200, and the handle part 400 is provided in front of the frame part 300. In the center, the driving unit 500 in the bicycle is connected to the rear wheel 200, The frame part 300 is divided into two rotatable front and rear frames 310 and 320, and the front wheel while allowing the handle part 400 to be rotated to the handle part 400 connected to the front frame 310. A first ruler for releasing (100) is provided. The unlocking means (600) is provided, and is provided between the two frames (310, 320) to allow rotation of the frames (310, 320). Two seats, the unlocking means 700 is provided, and the baskets 800 and 810 are respectively provided on the front and rear wheels 200 of the frame part 300, and the handle member that can be pulled out on the rear wheel 200 side ( 820) is a portable folding bike characterized in that it is provided. The method of claim 1, The first locking and disengaging means 600 is provided with a clamp 610 to be fitted to the handle portion 400, the coupling member 611 is formed on the bottom of the clamp 610, the coupling member 611 The lower portion of the coupling member 620 is coupled, the outer peripheral surface of the coupling member 620 is fitted with a bush 630, the support frame 110 is connected to the front wheel 100 the bush (630) A ring groove 111 for receiving and fixing is formed, and the coupling screw 640 is inserted into the coupling member 611 and the connection member 620 through the clamp 610, and the connection member 620 and Portable folding bicycle, characterized in that the through-hole 311 is formed in the front frame 310 to accommodate the bush (630). The method of claim 2, Portable folding bicycle, characterized in that the coupling protrusion 611a protrudes crosswise on the bottom of the coupling member 611, and a cross-shaped coupling groove 621 is formed on the upper surface of the connection member 620 corresponding thereto. . The method of claim 2 or 3, The clamp 610 has a form in which two plates 612 and 613 having their own elastic force are bent and overlapped, and the through holes 614 pass through the coupling screw 640 through the plates 612 and 613. It is perforated, the fitting hole 615 is formed on one side to be fitted to the handle portion 400 is loosened the coupling screw 640, the clamp 640 is opened while the coupling of the coupling member 611 provided on the bottom Portable folding bike, characterized in that the engaging groove 621 of the projection (611a) and the connecting member 620 is released. The method of claim 1, The second ruler unlocking means 700 is provided with a fixing member 710 between the front and rear frames 310 and 320, and spaced apart from each of the front and rear frames 310 and 320, respectively. Support jaw (312) (312 ') (321) (321') is protruded and formed in contact with both sides of the fixing member 710, the binding plate (720) on the upper portion of the fixing member (710) Through holes 711a and 712a are formed at both protruding end portions 711 and 712 of the fixing member 710, and support jaws 312 and 312 'of the front and rear frames 310 and 320 are provided. Through holes 312a, 312'a, 321a, and 321'a are formed in 321 and 321 ', respectively, and are connected through the supports 730 and 740, and the center of the binding plate 720 is provided. Portable screw folding bike, characterized in that the screw 750 is combined to be coupled to the fixing member 710 of the lower portion. The method of claim 5, The bottom of the binding plate 720 is a portable folding bike, characterized in that the engaging projection 721 is formed to be coupled to the coupling groove 713 formed on the upper surface of the fixing member (710). The method of claim 5, Different projections 722 are formed on both sides of the coupling protrusion 721 of the binding plate 720 so that the cross-shaped grooves 312b formed on the upper surfaces of the support jaws 312 and 321 of the front and rear frames 310 and 320. Portable folding bicycle, characterized in that the hook (321b). The method of claim 5, The bottom surface of the fixing member 710 is provided with an annular support member 760, the connector 770 rotatable in the inner space of the support member 760 is provided, the lower side of the connector 770 Through-hole 771 is formed to the separate coupling member 780 is fitted, the parking footrest 790 is provided at both ends of the coupling member 780, one side of the bottom surface of the connector 770 is a locking projection ( 772 is protruded, and the locking projection 312'b is protruded on the bottom surface of the lower support jaw 312 'of the front frame 310, and the connecting ring 792 is interposed therebetween. Portable folding bike.