KR100895545B1 - Unicycle - Google Patents

Abstract

The present invention relates to a unicycle, and more particularly, power can be transmitted to the main wheels in only one direction so that deceleration is possible, and a driving force is generated by the pedal and the handle, which can combine both upper and lower body movements and a braking function. This relates to a unicycle that can be imposed.

The configuration of the unicycle according to the present invention, the main wheel rotated about an axis and the power is transmitted only in one direction; A pedal coupled to both ends of the shaft to lift both feet of the user; And a power transmission unit provided at a coupling portion of the main wheel and the shaft to transmit power from the shaft to the main wheel.

Unicycle, Propulsion, Pedal, Steering Wheel

Description

Unicycle {UNICYCLE}

1 is an exploded perspective view of a unicycle according to an embodiment of the present invention.

2 is a front view of the unicycle.

3A and 3B are longitudinal cross-sectional views of the ratchet gear and stopper portions of the unicycle.

4 is a front sectional view partially enlarged in a pedal part of the unicycle.

5A and 5B are longitudinal cross-sectional views of a ratchet gear and a stopper portion of a unicycle according to another embodiment of the present invention.

6 is a front view of a unicycle according to another embodiment of the present invention.

7 is a front view of a unicycle according to another embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

100: one embodiment unicycle 110: main wheel

112: shaft 116: inner housing

118: outer housing 120, 120 ': ratchet gear

122, 122 ': stopper 130: pedal

134: brake 136: auxiliary wheel

200: unicycle of another embodiment 210: main wheel

212: division axis 213: polygonal axis

216: inner housing 218: outer housing

220: ratchet gear 222: stopper

230: pedal 236: auxiliary wheel

300: another embodiment unicycle 310: main wheel

312: shaft 316: inner housing

318: outer housing 320a, 320b: ratchet gear

322a 322b: stopper 330: pedal

336: auxiliary wheel

The present invention relates to a unicycle, and more particularly, power can be transmitted to the main wheels in only one direction so that deceleration is possible, and a driving force is generated by the pedal and the handle, which can combine both upper and lower body movements and a braking function. This relates to a unicycle that can be imposed.

In general, the bicycle is one of the transport means having a characteristic of moving forward by the driving force generated by rotating the wheels provided at the rear mainly during and after pedaling with two feet in the state of riding, and in recent years the mountain unicycle rather than simply transport means Various products such as for sports or unicycles have been released.

Conventional unicycle is not shown in the drawings, but one wheel and a pedal coupled to both ends of the shaft of the wheel and the arm (Arm) is provided with a saddle at the top coupled to both ends of the shaft between the wheel and the pedal It is composed

However, since the unicycle is fixed to the wheels and the pedals, the pedals must be slowly rotated to decelerate, and propulsion is generated through the turning of the pedals. There was a problem.

The present invention has been made in order to solve the above problems, the purpose is to allow power to be transmitted to the main wheel in one direction only to reduce the speed and the driving force is generated by the pedal and the handle combines both upper and lower body movement It is possible to provide a unicycle that can and can provide a braking function.

The present invention to achieve the above object, the main wheel is rotated about an axis and the power is transmitted only in one direction; A pedal coupled to both ends of the shaft to lift both feet of the user; And a power transmission unit provided at a coupling portion between the main wheel and the shaft to transmit power from the shaft to the main wheel. When the pedal is rotated downward, the rotational force is transmitted to the main wheel so that the main wheel is transmitted. Rotation of the pedal and, on the contrary, rotation of the pedal upwards is preferable because power is not transmitted to the main wheels and the propulsion of the pedals is prevented from being propagated on the inclined road.

Hereinafter, with reference to the accompanying drawings, the unicycle of the present invention will be described as follows.

Unicycle 100 according to an embodiment of the present invention is a main wheel 110, a power transmission unit, a pedal arm (114) and a pedal as shown in Figures 1, 2 and 3a, 3b 130 and the auxiliary wheel 136.

At least one of the main wheels 110 is provided with a wheel flesh radially from the center and is rotated about the central shaft 112, the circumferential surface is wrapped in rubber so that the buffering force can be given in contact with the ground.

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Furthermore, a bearing B is interposed between the center of the main wheel 110 and the shaft 112 provided at the center, and inner housings 116 are provided at both ends of the center of the main wheel 110, respectively. Outside the housing 116 is provided with an outer housing 118, respectively.

Here, the inner housing 116 has a central portion having an inner diameter corresponding to the outer diameter of the shaft 112 and is formed in a shape in which the diameter of one end close to the main wheel 110 is expanded than the diameter of the other end.

Furthermore, one end of the central portion of the main wheel 110 is recessed to an appropriate diameter, and a ratchet gear 120 is formed on the recessed inner circumferential surface.

In addition, the outer housing 118 is formed in a shape in which a central portion thereof has an inner diameter corresponding to the outer diameter of the shaft 112, and the outer peripheral surface end thereof is bent while being close to the other end of the inner housing 116.

Furthermore, a groove is provided on the outer circumferential surface of the inner housing 118, the stopper 122 coupled to the teeth of the ratchet gear 120, and the inlet area is reduced while being connected to the outer circumferential surface so that the stopper 122 is provided on one side. 116a is formed and an elastic member S is interposed between the stopper 122 and the rear surface of the stopper 122 and the groove 116a at the inlet of the groove 116a.

Here, the stopper 122 is formed in a shape corresponding to this shape of the ratchet gear 120 to transmit power only when the ratchet gear 120 suggests power transmission in one direction, i.e., rotates downward. When the stopper 122 is rotated upward, power is not transmitted.

At least one stopper 122 may be provided and a plurality of stoppers 122 may be provided radially to disperse the stress concentration applied to the contact surface during power transmission.

As such, since the power transmission unit including the ratchet gear 120 and the stopper 122 has a function of transmitting power by being rotated in only one direction, a detailed description of the structure is omitted.

In addition, the elastic member S serves to press the stopper 122 in the direction of the ratchet gear 120 by an elastic force with a compression spring.

One end of the pedal arm 114 is coupled to each of the outer surfaces of the outer housing 118, but the pedal arm 114 has a length shorter than the radius of the main wheel 110 in a block shape extending in the longitudinal direction. At the other end of the pedal 130 and the auxiliary wheel 136 is coupled.

In addition, the pedal 130 has a fixed portion (130a) is coupled to one end coupled to the pedal arm 114, as shown in Figure 4 between both ends between the fixed portion (130a) and the pedal 130 The stretched elastic member 138 is interposed and one end of the elastic member 138 is inserted into the eccentric hole of the fixing part 130a, and then fixed by a screw and the other end is inserted into the eccentric hole formed inside the pedal 130. After it is fixed by screws.

Here, the pedal 130 is provided at the first mutually diagonal position on both sides of the main wheel 110, the position is manufactured in a fixed state.

In addition, the pedal 130 is provided with the elastic member 138 to maintain a state where the pedal arm 114 and the upper surface are orthogonal to each other, ie, parallel to the ground. When the foot is separated in the process of turning 130, the elastic member 138 returns to its original position by the restoring force.

In addition, an auxiliary wheel 136 is further provided on an outer surface of the pedal 130 to facilitate centering, and a groove 132 is formed at a rear end thereof, and the brake 134 is positioned at the groove 132. Fixing with a hinge (not shown in the drawing) presses the brake 134 with the foot when driving, thereby applying the braking force by pressing the ground while rotating the hinge to the starting point.

On the other hand, the brake 134 is to be able to return to the original position when removing the external force by the foot.

Although not shown in the drawings, a rod-shaped handle (not shown in the drawing) may be further provided between the pedal 130 and the auxiliary wheel 136 so that the occupant grips with both hands, thereby providing stability. The lower end is coupled on the axis of the auxiliary wheel 136 to enable this.

Therefore, in the process of driving the unicycle 100 in the present embodiment, the auxiliary wheel 136 of any one pedal 130 is in contact with the ground, the main wheel 110 and the auxiliary wheel 136 is in contact with the ground at the same time After the foot is seated on the pedal 130 close to the ground in the state, while holding the center and pushing with the other foot, the other foot 130 is seated on the other foot 130 and at the same time rotates the pedal 130 downward.

At this time, the pedal arm 114 to which the pedal 130 is fixed is connected to the stopper 122 provided in the inner housing 116 in contact with the vertical surface of the ratchet gear 120 to transmit power, and thus, the main wheel ( 110 is interlocked rotationally generated thrust force.

Thereafter, when the pedal 130 is not rotated or rotates upward when the driving surface or driving force is not generated, the stopper 122 continuously slides along the inclined surface of the ratchet gear 120 so that the main wheel ( The inner housing 116 to which the pedal 130 is coupled without power is transmitted to the 110 is lost.

In order to brake the main wheel 110, the brake 134 provided at the rear end of the pedal 130 is pressed against the ground and stopped.

Although not shown in the drawings, a rod-shaped handle (not shown in the drawing) may be further provided between the pedal 130 and the auxiliary wheel 136 so that the occupant grips with both hands, thereby providing stability. The lower end is coupled on the axis of the auxiliary wheel 136 to enable this.

In addition, the wheel flesh of the main wheel 110 may be replaced by an elastic member to practice jumping (Jumping) in place.

Unicycle 100 according to another embodiment of the present invention as shown in Figure 5a and 5b the position of the power transmission portion consisting of that of the previous embodiment and the ratchet gear 120 'and the stopper 122'. Except for the detailed description, the structure and function are the same except for the above.

That is, the ratchet gear 120 'is formed on the outer circumferential surface of the inner housing 116, and the stopper 122' which proposes power transmission while teeth are bitten by the ratchet gear 120 'is formed of the main wheel 110. A groove is formed on an inner circumferential surface of which one end of the central portion is formed and is provided with the elastic member S in the groove.

Moreover, this shape of the ratchet gear 120 'is formed identically to that of the previous embodiment.

Although not shown in the drawings, a rod-shaped handle (not shown) may be further provided between the pedal 130 and the auxiliary wheel 136 to allow the occupant to give stability by holding both hands.

As shown in FIG. 6, the unicycle 200 according to another embodiment of the present invention is provided with a power transmission unit having ratchet gears 220 and a stopper 222 at both ends of the main wheel 210. Since this point is different from the embodiment and the remaining components have the same structure and function, detailed description thereof will be omitted.

At this time, the inner and outer housings 216 and 218, the pedal arm 214, the pedal 230 and the auxiliary wheel 236 at one end and the other end are respectively separated from the central part of the main wheel 210 by the divided shaft 212. It is fixed by the bearing (B).

In this case, the main wheel 210 may be rotated by pressing the pedal 230 downward and rotating the main wheel 210 at the same time by stepping on both pedals 230 and rotating downward. .

Furthermore, when the inner and outer housings 216 and 218, the pedal arm 214, the pedal 230 and the auxiliary wheel 236 are provided separately by the split shaft 212 at both ends, the left and right pedals 230 are When rotated individually and rotated upwards, it is possible to change the position of each other and the auxiliary wheels 236 on both sides may be in contact with the ground.

In this case, when the pedals 230 on both sides are interlocked with each other, a polygonal shaft 213 corresponding to a polygonal hole formed through the center of the division shafts 212 is inserted.

That is, since the pedals 230 are preferably provided at mutually diagonal positions, the pedals 230 are artificially positioned diagonally to each other, and then the polygonal shafts 213 are inserted into the polygonal holes formed in the dividing shaft 212. To connect both pedals 230.

In the present embodiment, the ratchet gear 220 is formed on the main wheel 210 and the stopper 222 is formed on one end of the outer circumferential surface of the inner housing 216. The stopper 222 may be formed on the outer circumferential surface of the housing 216, and the stopper 222 may be formed on the inner circumferential surface of the circular groove recessed in the center of the main wheel 210.

In the unicycle 300 according to another embodiment of the present invention, as shown in FIG. 7, the driving force is generated not only by the pedal 330 but also by the handle 340, and the handle 340 is the outer housing 318. ) It is coupled to the top of the circumferential surface, but can be detached and attached to facilitate movement and storage.

On the other hand, in the present embodiment is further provided with a power transmission unit consisting of the handle 340, the ratchet gear 320b and the stopper 322b in the previous embodiment, the remaining components will be omitted detailed description.

The handle 340 is a horizontal pipe provided at the top so that it can be gripped by hand, a vertical pipe perpendicular to the bottom of the central portion of the horizontal pipe, and the main wheel 310 at the bottom of the vertical pipe Inverse "U" shaped pipe longer than the radius of the shape is formed in a combined shape, without being limited to this can be changed.

Here, in order to remove and attach the handle 340, a pipe-shaped extension part 318a is formed at each end of the outer circumferential surface of the outer housing 318 so as to protrude by an appropriate length, and is disposed at an upper end side of the extension part 318a. A hole is formed, but a locking member 318b for imparting an elastic force provided therein is partially protruded through the hole.

On the other hand, the locking member 318b is folded in half the plate spring, the folded end is provided in the form in which the protruding portion of the cylinder formed in a hemispherical shape at the top is coupled.

In addition, holes are formed at the same positions as the holes of the extension part 318a at each lower end of the handle 340 so as to be parallel to the axis 312 of the main wheel 310 when the handle 340 is attached. A portion of the locking member 318b protruding from the extension part 318a is caught by a lower hole of the handle 340 to prevent it from being separated by an external force.

Thereafter, when the handle 340 is to be separated from the outer housing 318, the handle 340 is moved upward while pressing the upper end of the locking member 318b protruding from the extension 318a. The bottom hole of the handle 340 is separated from the locking member 318b and separated.

Furthermore, when the handle 340 is pushed forward, the power is transmitted to the main wheel 310 and rotated, and when the rear wheel is pulled toward the occupant, the power of the pedal 330 is not transmitted. Repeat this several times to gain momentum.

In order to implement this, the main wheel is powered by the handle 340 in addition to the power transmission unit consisting of a pair of ratchet gear 320a and the stopper 322a which transmits the rotational force of the pedal 330 to the main wheel 310. A pair of separate ratchet gear 320b and a stopper 322b power transmission unit capable of transmitting to 310 should be further provided, and at this time, the ratchet gear 320b may be symmetrical with the ratchet gear 320a in this direction. ) Should be provided.

That is, among the shafts 312 inserted into the center of the main wheel 310 by the bearing B, the ratchet gear 320a and the stopper are provided inside the shaft 312 at a position close to the main wheel 310. The power transmission portion 322a and the ratchet gear 320b provided outside and the power transmission portion stopper 322b are positioned opposite to each other so that the handle 340 is pushed forward to the outside of the shaft 312. While the main wheel 310 is rotated by the power transmitted by the stopper 322b provided inside the outer housing 318 and the ratchet gear 320b contacted thereto, the one end of the inner housing 316 is provided. Since the stopper 322a is rotated along the inclined surface of the ratchet gear 320a, power is not transmitted to the main wheel 310.

And the process of transmitting power to the main wheels 310 by the pedal 330 is the same as in the previous embodiment, so a detailed description thereof will be omitted.

As a result, when the main wheel 310 is rotated by the handle 340, the pedal 330 may be pressed by the foot.

In addition, the unicycle 300 may be propelled by the rotation of the pedal 330 alone, or may be performed by moving the front and rear of the handle 340 alone and simultaneously moving the pedal 330 and the handle 340.

And each of the power transmission units of the ratchet gear (320a, 320b) and the stoppers (322a, 322b) may be provided at one end of the coupling portion of the main wheel 310 and the shaft 312, but are provided at both ends for power distribution. It is desirable to be.

Here, reference numeral 314, which is not described, is a pedal arm and 336 is an auxiliary wheel.

As described above, the unicycle of the present invention allows the power to be transmitted to the main wheels in only one direction, and thus the deceleration is possible. have.

Claims (11)

A main wheel 110 rotated about the shaft 112 and transmitting power only in one direction; A pedal 130 coupled to both ends of the shaft 112 and having a user's feet raised thereon and having a brake 134 configured to press and brake the ground at its rear end; And The unicycle characterized in that it comprises a power transmission unit: is provided at the coupling portion of the main wheel (110) and the shaft (112) to transmit power from the shaft (112) to the main wheel (110). The method of claim 1, wherein the power transmission unit, Ratchet gear (120) formed on any one side of the coupling portion of the shaft 112 or the main wheel (110); And A unicycle comprising: a stopper (122) formed on the other side to be bitten with the ratchet gear (120). The method of claim 2, wherein the power transmission unit, A unicycle, which is provided at one end of the main wheel (110) and the shaft (112) and the left and right pedals (130) are interlocked when the pedal (130) is rotated up and down. The method of claim 2, wherein the power transmission unit, It is provided at both ends of the main wheel 210 and the divided shaft 212, the left and right pedals 230 are interlocked when the pedal 230 rotates downward, and the left and right pedals 230 when the pedal 230 is rotated upward. Unicycles, characterized in that are rotated individually. The method of claim 4, wherein A plurality of holes are formed in the divided shafts 212 so that the divided shafts 212 can be interlocked with each other, and a plurality of shafts 213 corresponding to the shapes of the polygonal holes are inserted therein. Unicycle. The method according to claim 3 or 5, Extending to allow the occupant to grip the upper end of the outer circumference of the outer housing 318 of the inner and outer housings 316 and 318 provided at both ends of the coupling portion between the main wheel 310 and the shaft 312 The unicycle characterized in that the handle 340 is further provided while being removed, attached. According to claim 6, The driving force of the main wheel 310, Unicycle, characterized in that generated by the rotation of the pedal (330) or the front and rear movement of the handle (340). The method of claim 7, wherein When the driving force of the main wheel 310 is generated by the handle 340, the power transmission unit provided at the coupling portion between the main wheel 310 and the shaft 312 and the shaft 312 is symmetrical from the starting point While the coaxial position of the inner, outer housing 316, 318 is further provided with a power transmission inside the other end, the power is transmitted by pushing the handle 340 forward, the main wheel 310 is rotated and pulled backward Unicycle characterized in that it is not delivered. The method of claim 1, The pedal (130, 230, 330) is a unicycle, characterized in that the auxiliary wheel (136, 236, 336) is further provided on its outer surface. delete The method of claim 9, Unicycle, characterized in that the handle is further provided for each upward between the pedal 130 and the auxiliary wheel (136).

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