KR100931524B1 - trishaw - Google Patents

Abstract

The present invention relates to a three-wheeled bicycle having a pair of front wheels, the steering apparatus 100 of the present invention includes a steering wheel 10 is rotatably inserted into the handle shaft of the handle 200; Upper and lower mounting brackets 20A and 20B installed and fixed to an outer circumferential surface of the steering wheel 10; A pair of front wheel mounting brackets 30 installed at both ends of the upper and lower mounting brackets 20A and 20B to connect upper and lower mounting brackets 20A and 20B and to which wheels W1 and W2 are mounted; A pair of rotating plates 40 disposed between the upper and lower mounting tables 20A and 20B and installed on front and rear surfaces of the steering table 10; One end of which is fixed to the pivot plate 40, and the other end of which is a pair of elastic supports 50 fixed to the lower mounting table 20B; Consists of a pair of link bars 60 for connecting the rear and the front wheel mounting bracket 30 of the lower end of the steering wheel (10); The rotating plate 40 is a part of the plate 41 consisting of a pair of left and right pairs of the right and left overlapping each other, the fixing hole 42 penetrating the plate 41 in the lower side of each plate 41 ) Is formed, an arc-shaped guide hole 43 is formed around the fixing hole 42 at the upper side of each plate 41, and the guide hole 43 is formed at the steering shaft 10. It is the technical feature to include the guide pin 12A penetrating.

The present invention can safely drive even if the elderly, children or driving inexperienced by the configuration as described above, and also because the turning radius is small during the change of direction is free to change direction, in addition, the inclination angle of the front wheel is limited, driving stability is great.

Description

Tricycle {TRICYCLE WITH A PAIR OF FRONT WHEELS}

The present invention relates to a three-wheeled bicycle having a pair of front wheels, and more particularly, it is possible to freely adjust the driving direction of the front wheel, reduce the radius of rotation and at the same time limit the inclination angle of the front wheels to maintain driving stability It is about one tricycle.

In general, bicycles are mostly two-wheeled bicycles each provided with one front and rear wheel, and these two-wheeled bicycles have low driving stability, which makes it difficult for an inexperienced person, a child or an elderly person to drive.

Accordingly, as a bicycle that can be easily rided while promoting driving safety for children or the elderly, a three-wheeled bicycle equipped with one front wheel and a pair of rear wheels and a four-wheeled bicycle with auxiliary wheels on both sides of the rear wheels have been developed and used. have.

These three- or four-wheeled bicycles have a higher driving stability than two-wheeled bicycles, so they can be easily learned and safely operated. However, these bicycles are usually reluctant to be used by the elderly and housewives due to the recognition that they are for children. do.

A three-wheeled bicycle having a pair of front wheels has been proposed as a bicycle capable of changing a negative perception of such a three-wheeled or four-wheeled bicycle and ensuring a stable driving.

FIG. 1A illustrates a three-wheeled bicycle developed by the present applicant and received a patent registration (Patent No. 0889463). As illustrated in this drawing, the bicycle disclosed in the document includes a main frame 1 in which one rear wheel is installed. And, the front shaft portion (2) installed in front of the main frame (1), the front wheel support shaft (3) on which the front shaft portion 2 is installed, and is provided at both ends of the front wheel support shaft (3) The front wheel mounting portion 4 is fixed to the installation, and a pair of steering wheels 5 for steering the front wheel mounting portion 4 to adjust the direction by the steering device of the front shaft portion 2, the bicycle is When the bicycle occupant operates the steering device, the steering wheel 5 pushes or pulls the front wheel mounting unit 4 so that the directions of both front wheels are switched together, and the driving direction is easily adjusted, and the driving stability is excellent.

In general, however, a three-wheeled bicycle having a pair of front wheels is inevitably larger in rotational direction than a two-wheeled bicycle. The three-wheeled bicycle has the front wheels vertically upright when the driving direction is changed. Because of this conversion, even if the rotation radius is larger than that of the two-wheeled bicycle is more large, there is a fear that a safety accident may occur during sudden turn.

In order to solve this problem, the applicant has received a patent registration (Patent No. 0908789) by proposing a three-wheeled bicycle having a small rotation radius as shown in FIG. 1B.

The patented technology has upper and lower link shafts (FW-32, FW-22) installed on the steering shaft in the front wheel portion (FW), the front wheel is installed on both ends of the upper and lower link shafts (FW-32, FW-22) And a tension member (T) connecting the upper link shaft (FW-32) and the steering shaft, and connected to the lower end of the steering shaft (FW-4). ) And a link (FW-7).

The three-wheeled bicycle having such a structure allows the front wheels on both sides of the front wheel part (FW) to be rotated while being inclined in the direction when the driving direction is switched, wherein the upper and lower link shafts (FW-32) , FW-22) and connecting shaft (FW-4) are vertically coupled to each other by a pivot to flexibly cope with movement or external force in the vertical or horizontal direction, but flexibly with movement or external force in the inclined direction In addition, they are difficult to limit the angle at which the front wheel is inclined due to its structure, and thus there is a problem that running stability is impaired.

In addition, in order to transmit the steering direction of the steering shaft to the front wheels on both sides, the first link FW-7 and the coupling shafts FW-4 on both sides connecting two links, that is, the steering shaft and the coupling shaft FW-4, are connected. The second link is connected to each other, the first link is operated when the direction is switched, the direction is adjusted by operating the second link in accordance with the operation of the first link, the first link and the first link in the process Since the two links are connected to each other by a ball joint, the operation of the first link cannot be transmitted to the second link as a result, and as a result, the steering angles of the two wheels do not coincide due to different rotation angles transmitted to both wheels. Can occur.

The present invention is to improve the problems of the prior art as described above, the present invention is excellent in stability when the bicycle is driving on a curved road that changes sharply the same direction as the curve road is free to change direction, and also minimize the radius of rotation It is an object of the present invention to provide a tricycle that can simultaneously limit the inclination angle of the front wheels.

An object of the present invention as described above and the steering wheel is rotatably inserted into the handle shaft of the handle; An upper and lower mounting mount fixed to an outer circumferential surface of the steering wheel; A pair of front wheel mounting brackets installed at both ends of the upper and lower mounting units to connect the upper and lower mounting units, and to which wheels are mounted; A pair of rotating plates positioned between the upper and lower mounting brackets and installed on the front and rear surfaces of the steering wheel, respectively; A pair of elastic supports, one end of which is fixed to the pivot plate and the other end of which is fixed to a lower mount; It is achieved by a steering device consisting of a pair of link bars connecting the rear of the lower end of the steering wheel and the front wheel mounting bracket.

According to the present invention, the turning radius is drastically reduced since the inclination of the wheel is inclined by changing the direction in which the occupant rotates while the occupant changes the driving direction of the bicycle, thereby rapidly turning the direction such as a sharp curve. You can ride a bicycle safely on this changing road.

In addition, in the present invention, the inclination angle of the front wheel can be limited to an appropriate angle, thereby preventing the running stability caused by the inclination of the front wheel from being impaired.

In addition to the present invention, even if the floor is inclined or the jaw is different in height, the two front wheels are naturally adjusted according to the height, so that the balance of the occupant is maintained as it is, so that the occupant can easily maintain the balance of the bicycle, thereby allowing safe driving. .

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in more detail.

The handle 200 is provided with handles at both ends as in the handle of a general bicycle.

The steering wheel 10 is coupled to the lower part of the handle 200, which is coupled to the center of the handle 200 installed horizontally as shown in FIGS. 4 and 5 to extend downward. The shaft is inserted through it and serves as a housing for fixing the handle shaft to be rotatable. The steering wheel 10 is fixed to the upper and lower mounting brackets 20A, 20B and the rotating plate 40 to be described later. To this end, each of the upper and lower portions of the steering table 10 has a through hole into which a pair of coupling pins 11 for fixing the upper and lower mounting brackets 20A and 20B can be inserted, respectively, between the upper and lower through holes. Mounting brackets 12 to which the copper plate 40 is coupled are installed to face the front and rear, respectively, based on the bicycle body.

In the mounting bracket 12, guide pins 12A penetrating through the guide holes 43 of the rotating plate 40 to be described later are formed in front and rear, respectively.

A steering plate 13 having a horizontal flange is attached to the end of the bracket having a “b” shape on the rear side of the lower end of the steering table 10, and a pair of fastening holes are formed in the horizontal flange. The joint 61 of the link bar 60, which will be described later, is coupled to the fastening hole.

The pair of upper and lower mounting brackets 20A and 20B are attached to the mounting frames 21 and 24 having a rectangular box shape through which the upper and lower portions penetrate their middle portions, and to the outer walls of both sides of the mounting frames 21 and 24, respectively. Connecting bars 22 and 25, and joints 23 and 26 formed at ends of the connecting bars 22 and 25.

The steering wheel 10 penetrates inside the mounting frames 21 and 24 having a rectangular box shape, and then the steering wheel 10 is mounted up and down by a coupling pin 11 coupled through a through hole. The frames 21 and 24 are respectively fixedly coupled to each other, and the steering wheel 10 is rotated when the driver rotates the handle by the structure, and the upper and lower mounting tables 20A and 20B are rotated according to the rotation of the steering wheel 10. Will be rotated.

In addition, connecting bars 22 and 25 having appropriate lengths are attached to both outer walls of the mounting frames 21 and 24, and the lengths of the connecting bars 22 and 25 between the two front wheels W1 and W2. The separation width is determined.

And the connecting bar (22, 25) of the side attached to the outer wall of both sides of the upper and lower mounting frame (21, 24) is formed with a "c" shaped fixing base 27 is open at the top, the other end of the joint portion ( 23 and 26 are formed, and the joint parts 23 and 26 are coupled to a front wheel mounting bracket 30 to be described later. The joint parts 23 and 26 are free to rotate within a proper range regardless of the direction. It consists of a ball joint so that the front and rear mounting brackets 30 and the upper and lower mounting brackets 20A and 20B may be tilted in any direction by the movement of the upper or lower mounting brackets 20A and 20B even when subjected to an external force. The coupling between the 30 remains intact.

The front wheel mounting bracket 30 is for connecting and fixing each of the pair of front wheels W1 and W2 to the connecting bars 22 and 25. The front wheel mounting bracket 30 has both ends of the fastening bolts 32A and 32B. A vertical rotation shaft 32, a main body 31 on which the vertical rotation shaft 32 is installed, and a lower end of the main body 31 and protrudes forward to form wheels W1 and W2. Is equipped with a wheel mounting portion 33 and the link fixing plate 34 which is located at the lower end of the main body 31 is protruded rearward.

As shown in FIG. 6, the front wheel mounting bracket 30 having such a structure has both ends of the vertical rotation shaft 32 at the joints 23 and 26 of the upper and lower mounting brackets 20A and 20B installed on the steering wheel 10, respectively. Fastening bolts 32A and 32B formed in the coupling are coupled by a nut, and the front wheels W1 and W2 are respectively mounted to the wheel mounting portion 33 formed at the lower end of the main body 31, and the link fixing plate 34 will be described later. Link bar 60 is coupled to be mounted on the bicycle, whereby the passenger to operate the handle 200, the link bar 60 pushes or pulls the link fixing plate 34, such a link fixing plate 34 By the operation of the main body 31 is rotated around the fastening bolts 32A, 32B, whereby the wheel (W1, W2) mounted on the wheel mounting portion 33 is also rotated while driving direction is adjusted.

A pair of rotating plates 40 are fixedly coupled to the mounting brackets 12 facing the front and rear directions, respectively, and the rotating members 40 are equipped with an elastic support 50 to be described later.

As shown in FIGS. 6 and 7, each of the pivoting plates 40 is formed by combining a part of the left and right pairs of plates 41 overlapped with each other. A fixing hole 42 penetrating the 41 is formed, and the upper side of each plate 41 restricts the rotation range of the rotating plate 40 on both the left and right sides with the fixing hole 42 as the center. An arc-shaped guide hole 43 to guide is formed, and a fastening hole is formed at the opposite end of the portion where the plate 41 overlaps.

The rotating plate 40 having the above structure is installed and fixed to the front and rear surfaces of the mounting bracket 12 by bolts penetrating the fixing hole 42, and the guide hole 43 is a guide pin of the mounting bracket 12 ( 12A) is inserted to guide rotation when the rotating plate 40 is rotated.

The rotating plate 40, while the elastic support 50 can be more freely flow, because the flow is limited within the range of the guide hole 43, the angle of inclination of the front wheel when both front wheels are inclined together with the ball joint The inclination angle is limited to be inclined only within the formation range of the guide hole.

The elastic support 50 is provided with an elastic body such as a spring to elastically support the upper and lower mounting brackets 20A, 20B, the elastic support 50 is an elastic body is located in the central portion thereof, as shown in FIG. Upper and lower fixed ends 51 and 52 are formed at upper and lower ends of the elastic body, and the upper fixed end 51 is formed by a fixing member penetrating the fastening hole 41 formed at the end of the pivot plate 40. It is fixed to the rotating plate 40, the lower fixing end 52 is fixed to the fixing table 27 formed in the lower mounting table 20B by the fixing member.

The elastic support 50 has the same elastic force on both the left and right sides, whereby the upper and lower mounts 20A and 20B are usually kept horizontal by the elastic force of the elastic support 50, and the bicycle is inclined by the road surface while driving. When the center of the moving to either one of the elastic support 50 is contracted, the other elastic support 50 is tensioned while the upper and lower mounting brackets 20A, 20B is naturally inclined.

As described above, one end of the elastic support 50 is fixed to the fixing base 27 of the rotating plate 40, and the rotating plate 40 is formed along the guide hole 43 having an arc when an external force is applied. Since they move independently, thereby each elastic support 50 is freely moved within the range in which the arc-shaped guide hole is formed without being restrained from each other.

4 and 10, the link bar 60 is formed to a suitable length as shown in Figure 4 and 10 to move the front wheel mounting bracket 30 on both sides by the operation of the handle 200 to switch the direction, Both ends of the link bar 60 are formed with a joint part 61 having a ball joint structure similarly to the upper and lower mounting brackets 20A and 20B, and the joint part 61 is a main body 31 of the front wheel mounting bracket 30. It is coupled to the coupling hole formed in the flange of the link fixing plate 34 and the steering plate 13 formed in the lower portion. At this time, the joint portion 61 is made of a ball joint is implemented to be appropriately rotated to correspond to the inclination and steering direction of both front wheels.

By such a structure, the handle shaft penetrating the steering wheel 10 is rotated by the manipulation of the handle 200 and the steering plate 13 is rotated with this structure. When the steering plate 13 is rotated, a pair connected thereto The pair of front wheel mounting brackets 30 is pushed or pulled by the link bar 60.

Therefore, the rotation angle of the steering plate 13 rotated by the steering shaft is transmitted to the pair of link bars 60 on both sides, so that the link bar 60 on the opposite side is pushed as much as one link bar 60 is pulled. As a result, both front wheels can be rotated at exactly the same angle.

delete

delete

When the present invention configured as described above meets the inclined road surface while driving the bicycle as shown in FIG. 8, the heights of both wheels W1 and W2 are naturally adjusted according to the inclination of the road surface so that the occupant can maintain the center. This is because the upper and lower mounts (20A, 20B) installed on the steering wheel 10 is rotated around the coupling pin 11, so that the occupant keeps driving while maintaining his balance regardless of the inclination of the road surface. can do.

That is, according to the present invention, even if the height of the two wheels W1 and W2 of the front wheels is temporarily changed by the slope of the road surface or by a puddle, a boundary stone, a staircase, or the like, it is possible to maintain a safe running without disturbing the occupant's balance.

In addition, the present invention, as shown in Figure 9 when the occupant inclined in the direction in which the bicycle is rotated while switching the driving direction of the bicycle, the left and right elastic support 50 works in conjunction with the rotating plate 40 independent of each other It is contracted / tensioned, and thus the wheels W1 and W2 are inclined at an angle so that the direction is changed and the radius of rotation is greatly reduced. .

On the other hand, when the wheels W1 and W2 are inclined as described above, the range in which the steering wheel 10 is inclined left and right by the elastic support 50 which horizontally holds the lower mount 20B may be limited.

Figure 1a is a perspective view showing an example of a conventional reverse three-wheeled bicycle,

Figure 1b is a partial perspective view showing another example of a conventional reverse tricycle,

2 is a perspective view showing an example of a tricycle according to the present invention;

3 is a perspective view showing an example of a steering apparatus according to the present invention;

4 is an exploded perspective view showing an example of a steering apparatus according to the present invention;

5 is a front view showing a steering apparatus and a handle according to the present invention;

6 is a partial perspective view showing a coupling structure of a steering apparatus according to the present invention;

7 is a perspective view showing an example of a rotating plate according to the present invention,

8, 9 10 is a state diagram used in the steering apparatus according to the present invention.

[Explanation of symbols on the main parts of the drawings]

10: steering wheel 11: coupling pin

12: Mounting Bracket 12A: Guide Pin

13: Steering Plate 20A: Top Mount

20B: Lower mount 21, 24: Mounting frame

22, 25: connection bar 23, 26: joint portion

27: Fixture 30: Front wheel mounting bracket

31: main body 32: vertical axis of rotation

32A, 32B: Tightening bolt 33: Wheel mounting part

34: Link Fixed Edition 40: Revolving Edition

41: fastening hole 42: fixing hole

43: guide hole 50: elastic support

51, 52: upper and lower fixed end 60: link bar

61: joint portion 100: steering device

200: handle 300: mainframe

400: pedal 500: saddle

1000: reverse tricycle W1, W2: wheels

N: Nut

Claims (5)

Steering device 100 connected to the handle 200 to change the direction of the front wheel, the main frame 300 is connected to the steering device 100, the pedal 300 and the saddle 500 and the rear wheel (W3) is installed In the tricycle 1000 made of, The steering apparatus 100 includes a steering wheel 10 to which the handle shaft of the handle 200 is rotatably inserted; Square mounting frames 21 and 24 fixed to the outer circumferential surface of the steering table 10, connecting bars 22 and 25 installed on both sides of the mounting frames 21 and 24, and the connecting bars 22, 25) upper and lower mounting brackets 20A and 20B including joints 23 and 26 installed at both ends; A pair of front wheel mounting brackets 30 installed at both ends of the upper and lower mounting brackets 20A and 20B to connect upper and lower mounting brackets 20A and 20B and to which wheels W1 and W2 are mounted; Located between the upper and lower mounting brackets 20A and 20B, a part of the left and right pairs of plates 41 overlapping each other is coupled to each other and a fixing hole penetrating the plate 41 at the lower side of each plate 41. (42) is formed, and a pair of rotating plate (40) formed at the upper side of each plate (41) with an arc-shaped guide hole (43) around the fixing hole (42); A guide pin 12A provided on the steering shaft 10 and penetrating the guide hole 43 of the pivot plate 40; One end of which is fixed to the pivot plate 40, and the other end of which is a pair of elastic supports 50 fixed to the lower mounting table 20B; Three-wheeled bicycle, characterized in that consisting of a pair of link bar (60) connecting the rear and the front wheel mounting bracket 30 of the lower end of the steering wheel (10) and having a joint portion (61) at both ends. delete delete The method according to claim 1, The front wheel mounting bracket 30 has a vertical rotation shaft 32 formed at both ends thereof with fastening bolts 32A and 32B, a main body 31 at which the vertical rotation shaft 32 is installed at an inner side thereof, and the main body ( 31 is located at the lower end of the protruding forward formed of a wheel mounting portion 33 is mounted to the wheel (W1, W2), and the link fixing plate 34 is located at the lower end of the main body 31 and protruded to the rear The tricycle characterized by. The method according to claim 1, The joint portion (23, 26, 61) tricycle, characterized in that the ball joint.

Images