KR200360701Y1 - Tricycle for extreme sports - Google Patents

Abstract

An extreme sport tricycle is disclosed. The present invention is an improvement of the three-wheeled bicycle used in the conventional children's riding equipment for extreme sports, pedal, crank, crankshaft, primary sprocket, chain, secondary sprocket and hub shaft and The main frame and the front wheel of the rim and the tire coupled to the hub shaft is bent at an angle between 15 degrees and 30 degrees, and the main frame has formed a mating surface for coupling the saddle and rear wheel shaft to the bent rear side, The saddle is fixedly coupled to the upper side of the coupling surface, and forms a backrest to surround all of the upper body rear surface of the rider, and a wing for forming a wing for transmitting the load according to the center of gravity of the rider on both sides of the backrest, One side is coupled to the lower side of the coupling surface of the main frame, the other side is a rear wheel fixing frame hinged to the center of the rear wheel shaft, the hinge And a suspension composed of a damping and a spring coupled between the rear wheel fixing frame and the rear wheel shaft to both sides of the mating portion. Therefore, the three-wheeled bicycle according to the present invention has a high safety and there is an effect that can be used for extreme sports that can be easily enjoyed by both adults and teenagers without teaching.

Description

Tricycle for Extreme Sports {TRICYCLE FOR EXTREME SPORTS}

The present invention relates to a bicycle driven by a cloud, and more particularly to a three-wheeled bicycle consisting of one front wheel and two rear wheels.

As can be seen in the drawing showing a general three-wheeled bicycle of Figure 1, the tricycle is generally made of riding toys that can be played by infants or children.

The driving principle of the tricycle illustrated in FIG. 1 is that when the pedal 2 is pressed, the force is transmitted to the crankshaft by the crank, and the front wheel 1 rotates by the rotation of the crankshaft. In other words, it is a front wheel drive system, and the rear wheel is only connected to the rear axle. At this time, the rotation ratio of the crankshaft and the front wheel is 1: 1 and the front wheel (1) makes one revolution with the foot cloud of one wheel.

Basically the same as the three-wheeled bicycle, but increase the durability, in particular, three-wheeled bicycle that can be carried by adults or adolescents using the sprocket, chain, hub, etc., was designed in the structure and shape as shown in FIG.

The three-wheeled bicycle as shown in FIG. 2 has a large diameter sprocket 3 and a hub shaft 6 connected to the crankshaft, in the same manner as the three-wheeled bicycle described in FIG. Relatively small sprocket (5) is coupled to the chain (4) to transfer the force by the foot cloud. That is, in the conventional general bicycle, the force transmission and driving principles are the same. The only characteristic is that the wheel driven by force is the front wheel. In addition, the saddle (7) in the form of a seat as shown in the form of a so-called 'lying down bike'.

Therefore, compared to the conventional three-wheeled bicycle for children as shown in Figure 1 it can produce a lot of speed, especially adults or teenagers can use.

In addition, the rotation principle of the three-wheeled bicycle of the type shown in FIG. 2 rotates using an angle of camber (Camber) formed by the center line of the front wheel and the ground as shown in the diagram conceptually shown in FIG.

That is, as shown in FIG. 3 (a), the upper frame 2-1 to which the front wheel 2 and the saddle 7 are coupled and the lower frame 8-1 to which the rear wheel 8 is coupled to the rear wheel shaft are coupled. And the upper frame 2-1 and the lower frame 8-1 are hinged at two points 9 and 9-1 as shown. Therefore, the upper frame 2-1 rotates based on the lower frame 8-1.

As a result, the camber angle of the front wheel 2 is changed by the left and right movement of the upper frame 2-1, thereby making the right turn and the left turn. When the upper frame (2-1) is raised to the left based on the occupant, the three-wheeled bicycle is to make a right turn, when the upper frame (2-1) is to the right, the three-wheeled bicycle is to turn left.

Figure 3 (b) shows a change in the camber angle of the front wheel (2) seen from the rear, in the case of the left turn the front wheel is lying on the left, in the case of the right turn the front wheel is lying on the right.

The conventional three-wheeled bicycle as shown in Figure 2 that drives and rotates as described above can be enjoyed by both adults and adolescents, but there is no suspension to absorb shock, so that the impact from the ground is transmitted to the rider Therefore, there is a problem that the crowd on the rider's spine during a long ride. In addition, it is possible to operate only in a good road condition and can not operate in a rough road condition such as extreme sports, there is a problem that can not overcome the limit as a means of play.

In addition, the principle of rotation is rotated of the upper frame (2-1) hinged in two places to the lower frame (8-1) due to the center movement of the occupant as described in FIG. 3, so that the rotation is made, once the occupant There is a problem that the riding state of the instability and the problem that the three-wheeled bicycle inverted during sudden curve.

The present invention was devised to solve the problems of the conventional three-wheeled bicycle as described above. The suspension is coupled to the rear wheel shaft based on power transmission using a chain, and steering by the rear wheel shaft is performed by moving the center of the rider. The main purpose of the integrated mainframe is to stabilize the rider's riding state, increase durability, and make it possible to run a rough road and not to turn over, thereby providing an extreme sports tricycle.

1 is a view showing a typical tricycle.

Figure 2 shows an example of an improved tricycle.

3 is a view showing the principle of changing the direction of the tricycle described in FIG.

Figure 4 is a view showing an embodiment of the present invention extreme sport tricycle.

Figure 5 is a view showing a mainframe according to the present invention extreme sport tricycle.

Figure 6 is a view showing an embodiment of a mainframe according to the present invention extreme sport tricycle.

Figure 7 is a view showing the configuration of the rear wheel shaft according to the present invention extreme sports three-wheeled bicycle.

8 is a view for explaining the principle of direction change according to the present invention extreme sports tricycle.

9 is a view comparing the three-wheeled bicycle for the present invention extreme sports and the conventional three-wheeled bicycle shown in FIG.

Figure 10 is a view showing an embodiment of the saddle according to the present invention extreme sport tricycle.

Figure 11 is a view showing an embodiment of the shock absorber according to the present invention extreme sport tricycle.

12 is a view showing a preferred embodiment of the present invention.

Figure 13 is a view showing a plate according to the present invention extreme sport tricycle.

*** Explanation of symbols for main parts of drawing ***

1: pedal 2: front wheel

3: sprocket 4: chain

5: sprocket 6: hub shaft

7: saddle 10: pedal

11: crank 12: crankshaft

13: 1st sprocket 14: Chain

15: 2nd sprocket 16: Hub shaft

21: Rim 22: Tire

30 main frame 31 spoke

40: rear wheel shaft 44: suspension

51: Hub 52: Tire

60: saddle 61: backrest

62: wing 70: shock absorbing part

In order to achieve the object of the present invention as described above, the pedal 10, the crank 11, the crankshaft 12, the primary sprocket 13, the chain 14 for transmitting the force by the foot cloud , A front sprocket made of a second sprocket 15 and the hub shaft 16 and the rim 21 and the tire 22 coupled to the hub shaft 16, the spokes 31 fixing the front wheels, and the spokes 31. The main frame 30 is integrated into the front side, the rear wheel shaft 40 is coupled to the rear side of the main frame 30, the hub 51 and the tire 22 are coupled to both sides of the rear wheel shaft 40 In the three-wheeled bicycle consisting of left and right wheels, brakes, saddle 60, etc., the main frame 30 is bent at an angle between 15 degrees and 30 degrees, the saddle 60 and the rear wheel shaft ( Forming a mating surface 32 for joining 40; The saddle 60 is fixedly coupled to the upper side of the coupling surface 32 of the main frame 30, forms a backrest 61 to surround all the upper body rear of the rider, and on both sides of the backrest 61 Forming a wing 62 for transmitting the load according to the center of gravity of the rider to the main frame; The rear wheel shaft 40 is coupled to one side of the lower surface of the coupling surface 32 of the main frame 30, the other side of the rear wheel fixing frame 41 hinged to the center of the rear wheel shaft, and both sides of the hinge coupling portion A suspension consisting of a damping 42 and a spring 43 coupled between the rear wheel fixing frame 41 and the rear wheel shaft 40; And a shock absorbing part 70 positioned between the saddle 60 and the engaging surface 32 of the main frame 30 and made of a block of rubber material.

In this case, the main frame 30 is divided into a front end portion 30-1 and a rear end portion 30-2, and the front end portion is hinged to the front end portion 30-1 and the rear end portion 30-2. It is preferable to further include a hinge cover 33 to allow the 30-1 and the rear end 30-2 to abut in the vertical direction, so that the frame can be folded like a folding bicycle.

In addition, the saddle 60 formed with the backrest 61 is also divided into a buttock side 60-1 on which the buttocks of the rider are seated, and a backrest side 60-2 supporting the back of the rider, and the backrest side 60-. 2) is hinged to either the buttocks side 60-1 or the main frame 30 so that the buttocks side 60-1 and the backrest side 60-2 abut each other in the vertical direction. It is desirable to be able to. Eventually, the present invention allows the mainframe 30 and the saddle 60 to be folded to reduce the volume of the space occupied as a whole, thereby facilitating storage and movement.

In addition, the shock absorbing unit 70 for reducing the impact transmitted to the rider on the road surface to fall, etc. is inserted into the through hole 71 and the through hole 71 penetrating the block up and down to absorb a plurality of springs (72); It is preferable to further increase the amount of impact that can be absorbed.

Finally, after removing the left and right wheels coupled to the rear wheel shaft 40, the plate 80 is integral with the coupling portion 81 is coupled to the rear wheel shaft 40; It is desirable to make available.

Hereinafter, with reference to the accompanying drawings will be described in detail the invention three-wheeled bicycle for extreme sports.

Figure 4 is a view showing an embodiment of the present invention extreme sports tricycle. As shown in FIG. 4, the present invention provides a means for transmitting power by a foot cloud, a main frame 30 forming a main body, a front / rear wheel, a saddle 60, a suspension 44, and an impact absorbing part. 70 and the like.

The power transmission means is composed of a pedal (10), a crank (11), a crankshaft (12), a primary sprocket (13), a chain (14), a secondary sprocket (15), and a hub shaft (16), The crankshaft 12 is coupled to the mainframe 30, and the hub shaft 16 is coupled to the spokes 31 of the mainframe 30.

The front wheel is composed of a rim (21) and the tire 22, the rim 21 is coupled to the hub shaft 16 is driven the front wheel.

That is, the force is transmitted from the pedal 10 to the crank 11 by the foot cloud, and the primary sprocket 13 coupled to the crank shaft 12 rotates by the rotation of the crank shaft 12.

In this case, the rotation of the primary sprocket 13 transmits a force to the secondary sprocket 15 through the chain 14, and the hub shaft 16 coupled to the secondary sprocket 15 rotates, thereby. The front wheel is driven.

In the detailed description of the present invention, the rotation ratio between the primary sprocket 13 and the secondary sprocket 15 has not been described in detail, but is composed of a general sprocket used in a bicycle using a chain in power transmission. Multiple sprockets of different diameters can be installed in parallel to form a variable speed sprocket.

The main frame 30 is made of a steel pipe, the front is formed with a spoke 31 for mounting the front wheel, the rear is formed so that the suspension 44, the saddle 60 and the shock absorbing portion 70 is coupled. . In particular, as shown, the rear side is heard at a predetermined angle, ie, an angle between 15 and 30 degrees. Hereinafter, a detailed description will be given in FIG. 5.

The rear wheel shaft 40 is coupled to the rear lower end of the main frame 30, and the rear wheels of the tire 52 coupled to the hub 51 are coupled to both sides of the rear wheel shaft 40.

The saddle 60 has a backrest 61 is formed, to form a wing 62 on both sides of the backrest 61.

The shock absorbing unit 70 is mounted between the main frame 30 and the saddle 60 to absorb the shock transmitted from the road surface.

The rear wheel is made of a hub 51 is coupled to the rear wheel shaft 40, the tire 52 is coupled to the hub 51. That is, the rear wheel is rolled by the rotation of the hub 51 coupled to the rear wheel shaft 40. At this time, although not shown, it is preferable to further include a bearing at the time of coupling the rear wheel shaft 40 and the hub 51 to improve the rolling properties.

Therefore, the present invention is composed of three wheels, the front wheel plays a role driven by the foot cloud, the rear wheel performs a role of the change of direction.

In the drawings, the brake device, that is, the braking device is not shown. However, when the hub shaft 21 is in the normal rotation direction, the brake shaft is generally the same as the hub shaft 21. However, when the reverse rotation is performed, the pedal 10 is reversed. When the hub shaft 21 is rotated reversely, it is preferable to enable braking by foot clouds using the hub shaft to be braked.

However, the braking device is not limited to the above description, and may be used as a braking device of a general bicycle.

5 is a view showing a main frame according to the present invention extreme sports tricycle. As shown in FIG. 5, FIG. 5 (a) shows the main frame 30 seen from above, FIG. 5 (b) shows a cross section of the main frame, and FIG. 5 (c) shows the main frame 30 of FIG. Side.

The mainframe 30 according to the present invention is largely divided into a front part, a middle part and a rear part. The front part is provided with a crankshaft 12, where the spokes 31 for coupling the hub shaft 16 and the front wheel is formed.

As shown in FIG. 5 (c), the rear portion is heard at a predetermined angle, for example, 15 degrees to 30 degrees. In addition, the rear portion is coupled to the main frame 30 is coupled to the coupling surface 32 for coupling the saddle to the rear wheel shaft, where the shock absorbing portion 70 of the block shape is located. Although the figure shows the upper side of the engaging surface 32, but is not limited to this, it may be located on the lower surface.

Thus, as shown in Fig. 5 (b) showing the cross section of the rear part.

The shock absorbing portion 70 has a block shape made of rubber material and has a plurality of through holes through which the fastening means passes, although not shown. This also applies to the engaging surface 32, the position of the through hole is the same.

6 is a view showing an embodiment of a mainframe according to the present invention extreme sports tricycle. As shown in the figure is to fold the main frame is divided into a front end 30-1 and a rear end 30-2, as shown in Figure 6 (a), the front end 30-1 And a hinge cover 33 which is hinged to the rear end 30-2 so that the front end 30-1 and the rear end 30-2 abut in a vertical direction.

Therefore, since the front end portion 30-1 and the rear end portion 30-2 are hinged to the hinge cover 33, the main frame can be folded in the form shown in FIG. 6 (b).

In FIG. 6, although the specific shape and hinge coupling method of the hinge cover 33 are not illustrated in detail, this uses a hinge cover 33 and a hinge coupling method used in a general folding bicycle, and any specific shape of the hinge cover And hinge coupling methods.

7 is a view showing the configuration of the rear wheel shaft according to the present invention extreme sports three-wheeled bicycle. As shown in the drawings is configured for the purpose of changing the direction and shock absorption of the present invention, one side is coupled to the lower side of the coupling surface 32 of the main frame 30, the other side is hinged with the center of the rear wheel shaft A rear wheel fixing frame 41 and a suspension composed of a damping 42 and a spring 43 coupled between the rear wheel fixing frame 41 and the rear wheel shaft 40 at both sides of the hinge coupling portion.

The rear wheel fixing frame 41 is preferably in the form shown in Figure 7 (a), the upper side is fixed to the lower side of the coupling surface 32 as shown in Figure 7 (b), the side is the suspension and the lower side Hinge coupling with the rear wheel shaft (40).

The suspension is composed of a damping 42 and a spring 43, one side of the damping 42 is hinged to the rear wheel fixing frame 41, the other side is hinged to the rear wheel shaft (40).

This suspension is called the shobar, is used for the movement of the rear wheels, and also absorbs shock. In particular, the damping 42 serves to convert the impact energy into thermal energy by acting between the movement of the suspension is compressed again to recover, so that the present invention absorbs the impact of the road surface while driving the road.

The spring 43 creates energy that the suspension can be compressed by impact and then regained. In other words, once the shock is absorbed without the spring, the role of the suspension is lost.

In addition, the spring 43 is to keep the coupling surface 32 and the rear wheel shaft 40 always in parallel as shown in Figure 7 (b). That is, when one suspension is compressed by the movement of the center of gravity of the occupant, the rotation is made, and when the suspension is later moved to the center of the center of gravity, the suspension is parallel again by the restoring force of the spring 43.

The engaging surface 32, the rear wheel fixing frame 41 and the rear wheel shaft 40 is coupled to the rear wheel fixing frame 41 perpendicular to the engaging surface lifted at a predetermined angle, as shown in Figure 7 (c), The rear axle is hinged to

Therefore, when one suspension is compressed, the rear wheel shaft 40 itself moves. Hereinafter, a detailed description will be given in FIG. 8.

8 is a view for explaining the principle of direction change according to the present invention extreme sports tricycle. As shown in FIG. 8, when a force due to the movement of the center of gravity is applied and one of the suspensions is compressed, the direction is changed in the direction of the compressed suspension.

That is, when the center of gravity is moved to the right, the right suspension 44-1 is compressed, so that the rear wheel shaft moves counterclockwise.

As a result, the present invention is turned in the right direction.

8 (b) shows that when the center of gravity is moved to the left, the left suspension 44-2 is compressed, so that the rear wheel shaft moves clockwise.

As a result, the present invention is turned to the left direction.

Therefore, it is possible to steer by the wheel shaft simply by moving the weight center of the rider without the movement of the separate steering device or the front wheel of the present invention.

9 is a view comparing the three-wheeled bicycle for the extreme sports of the present invention and the conventional three-wheeled bicycle shown in FIG. The improved three-wheeled bicycle described in FIG. 2 can also be rotated by the movement of the center of gravity without a separate steering device, but the steering method according to the movement of the center of gravity and the movement of the center of gravity is different from the present invention.

That is, as shown in FIG. 9 (a), the center of gravity of the upper part is rotated while the upper part is centered on the basis of the rider. In addition, as described above with reference to FIG. 3, the movement of the front wheel is caused by the movement of the center of gravity, thereby changing the direction.

However, the present invention, as shown in Fig. 9 (b), since the center of gravity is changed around the rear wheel shaft is easy to move the center of gravity is excellent in the ability to change the direction of movement according to the center of gravity, especially in the case of the improved three-wheeled bicycle The occupant is suspended, and the riding state is unstable, but the present invention is stable because the occupant is seated on the main body.

10 is a view showing an embodiment of the saddle according to the present invention extreme sport tricycle. The saddle shape shown in FIG. 10 shows an embodiment, and is divided into a buttocks side 60-1 on which the buttocks of the rider are seated and a backrest side 60-2 supporting the backs of the riders. 60-1 and the backrest side 60-2 are hinged 60-3 so that the buttocks side 60-1 and the backrest side 60-2 abut each other in the vertical direction. It is. That is, the backrest side 60-2 having the wings 62 to assist the movement of the center of gravity rotates based on the hinged shaft 60-3.

Therefore, when storing or moving the present invention, the backrest side 60-2 can be folded to reduce the spatial volume.

11 is a view showing an embodiment of the shock absorbing unit according to the present invention extreme sports tricycle. As shown in the figure, the rubber-block-type shock absorbing portion 70 further includes a plurality of springs 72 for enhancing the shock absorbing force and the restoring force, as shown in FIG. 11 (a). A plurality of through holes 71 penetrating the block vertically so as to have a space in which the 72 can be inserted are formed.

The spring 71 is inserted into the shock absorbing part 70 formed of a rubber material having the plurality of through holes 71 formed therein.

That is, the spring 72 is inserted into the through-hole 71 formed in the shock absorbing portion 70 as shown in the cross section shown in Figure 11 (b).

Therefore, the suspension absorbs vibrations or sudden shocks transmitted through the main frame or the rear wheel shaft and the like, and at the same time increases the riding comfort.

12 is a view showing a preferred embodiment of the present invention, in particular the backrest side (60-2) of the saddle is a view showing the form hinged (60-3) to the mainframe (30). Therefore, the backrest side 60-2 is pivoted based on the hinge coupling 60-3 with the mainframe 30 and can be folded to the buttocks side 60-1. In addition, the coupling form of the rear wheel shaft 40 and the suspension 44 described with reference to FIG. 4 may be more clearly understood through FIG. 12. That is, as shown, the rear wheel shaft 40 is hinged to the rear wheel fixing frame 41 coupled to the main frame 30 and fixed, and at this time, two suspensions between the rear wheel fixing frame 41 and the rear wheel shaft 40 ( 44 is mounted as shown. This can be seen that the shock absorption and the change of direction of the subject innovation is made.

Figure 13 is a view showing a plate according to the present invention extreme sports tricycle. 13 is to use the present invention in the snow road to the ice road as shown in Figure 13 (a) plate 80 integral with the coupling portion 81 is coupled to the rear wheel shaft 40 It is installed by replacing it with the backside.

That is, as shown in FIG. 13 (b), the left and right rear wheels coupled to the rear wheel shaft 40 are removed, and the coupling portion 81 is coupled to the rear wheel shaft 40 from which the rear wheel is removed. That is, as shown in the plate 80 is coupled to the rear wheel shaft, and serves as a rear wheel.

In addition, the tire 22 of the front wheel is preferably made of a spike tire or a snow tire for increasing the grip on the snow road or the ice road.

Although the present invention described above has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims of utility model registration. Is a matter of course.

As described above, the three-wheeled bicycle for extreme sports of the present invention is three-wheeled and can be easily operated by anyone. It can be operated and can be enjoyed as extreme sports, and the saddle and mainframe are integrated to prevent the three-wheeled bicycle from turning over due to sudden turning during operation.

In addition, the back of the mainframe or the saddle can be bent by the hinge coupling to reduce the spatial volume of the tricycle has the effect of high storage and mobility.

In addition, the vehicle further includes a plate that replaces the rear wheels so that the vehicle can run on snow roads or ice roads.

Claims (5)

Pedal 10, crank 11, crankshaft 12, primary sprocket 13, chain 14, secondary sprocket 15 and the hub shaft 16 for transmitting the force by the rolling clouds and The front wheel of the rim 21 and the tire 22 coupled to the hub shaft 16, the spoke 31 for fixing the front wheel, the main frame 30, the spoke 31 is integral to the front side, the main A tricycle consisting of a rear wheel shaft 40 coupled to the rear side of the frame 30, a left and right wheel made of a hub 51 and tires 22 coupled to both sides of the rear wheel shaft 40, a brake, a saddle 60, and the like. To The main frame 30 has a rear side bent at an angle of between 15 degrees and 30 degrees, and the engaging surface 32 for coupling the saddle 60 and the rear wheel shaft 40 to the bent rear side; The saddle 60 is fixedly coupled to the upper side of the coupling surface 32 of the main frame 30, forms a backrest 61 to surround all the upper body rear of the rider, and on both sides of the backrest 61 Forming a wing 62 for transmitting the load according to the center of gravity of the rider to the main frame; The rear wheel shaft 40 is coupled to one side of the lower surface of the coupling surface 32 of the main frame 30, the other side of the rear wheel fixing frame 41 hinged to the center of the rear wheel shaft, and both sides of the hinge coupling portion A suspension consisting of a damping 42 and a spring 43 coupled between the rear wheel fixing frame 41 and the rear wheel shaft 40; And Extreme sports three-wheeled bicycle comprising :; between the saddle (60) and the engaging surface (32) of the main frame (30), made of a block of rubber material. The method of claim 1, wherein the mainframe 30 Divided into a front end portion 30-1 and a rear end portion 30-2, the front end portion 30-1 and the rear end portion 30-2 are hinged to the front end portion 30-1 and the rear end portion ( 30-2) a hinge cover (33) to be in contact with each other in the vertical direction; extreme sports three-wheeled bicycle further comprising. According to claim 1, wherein the saddle 60, the backrest 61 is formed The buttock side 60-1, where the occupant's buttocks are seated, and the backrest side 60-2, which supports the back of the occupant, are divided. Hinge coupling to any one of the 30, so that the buttocks side (60-1) and the backrest side (60-2) in contact with each other in the vertical direction; three-wheeled bicycle for extreme sports, characterized in that. According to claim 1, wherein the shock absorbing portion 70 Extreme sports three-wheeled bicycle, characterized in that it further comprises; a plurality of springs 72 are inserted into the through hole 71 and penetrates the block up and down to absorb shocks. The method of claim 1, After removing the left and right wheels coupled to the rear wheel shaft 40, the plate 80 is integral with the coupling portion 81 coupled to the rear wheel shaft 40; Extreme sports three-wheeled bicycle further comprising a .