JP2523432B2 - Rollaski - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller ski which can be skied on a snow-free road surface.

[0002]

2. Description of the Related Art Conventionally, as a modified bicycle, there has been known one in which wheels are attached to a pair of elongated plates for the purpose of traveling manually on a road surface. In the modified bicycle, a pair of long plates are rotatably connected to each other at their tips, and the parts are supported by a common wheel, and the rear ends of the plates are supported by casters of a rotation angle limiting type. Further, it is known that an operating handle is connected to the connecting portion to stand upright, which is used in an amusement park or the like. This modified bicycle puts its feet on each plate and grasps the handle, turning the handle for direction change just like a normal bicycle, while using the casters with a limited rotation angle to make wide and narrow movements by the legs The vehicle is converted into a forward drive force for traveling.

[0003]

The inventor of the present invention utilizes a part of such a modified bicycle to provide a roller ski capable of gliding on a snow-free road by the same operation as a normal ski. This is an issue. In the conventional deformed bicycle, the direction was changed by the handle, but in normal skiing, the direction is changed by using Christiania and movement of weight as the ski technique, so the present invention also uses the technique to change the direction. The purpose is something that can be changed. Therefore, in view of the fact that it is almost impossible to lift one of the skis when changing the direction with a roller ski, the first aspect of the present invention, like Christiania known as a ski technique, changes the direction of the athlete's heel. By kicking in the opposite direction to the direction to be changed, the direction of the caster at the rear of the ski is changed to change the direction. In the first aspect of the invention, in the case of the change of direction by the above method, the ski is theoretically kept parallel to the ground without being inclined. Next, in addition to the first aspect of the invention, the second aspect of the invention is to change the direction by tilting the axis of the ski with respect to the ground according to the weight shift of the athlete, as in the ski technique of Bogen. .

[0004]

That is, the roller ski according to the first aspect of the present invention comprises a pair of elongated skis, and connecting means for rotatably connecting the tip ends of the skis to each other.
A wheel that supports the connecting means and a pair of casters of a rotation angle limiting type that respectively support the rear end portions of the pair of skis are provided. Further, the connecting portion is provided with a synchronous rotation means for rotating each ski at substantially equal angles around the traveling direction of the wheels. The roller ski according to the second aspect of the present invention comprises a pair of elongated skis, a connecting means for connecting the ends of the skis so as to be rotatable with each other, a wheel for supporting the connecting means, and a pair of the skis. It is provided with a pair of casters of a rotation angle limiting type that respectively support rear end portions.
Further, the pair of skis can be bent upward in a mountain shape, respectively. Further, in the roller ski according to the third aspect of the present invention, a drive source such as a drive engine is connected to the wheels.

[0005]

In the roller ski of the first aspect of the present invention, the action of the synchronous rotation means provided at the connecting portion allows the wheels to advance the rotation angle of each ski even if there is a difference in the left and right leg force of the skier. It can always be equiangular with respect to the center of direction. Further, in the roller ski of the second aspect of the invention, when the lighter ski is lifted when changing the direction due to weight movement, the ski is bent upward in a mountain shape, so that the caster at the rear end is always on the road surface. It will come into contact with the skier and maintain a stable posture.
Only then can the axis parallel to the longitudinal direction of the ski be inclined with respect to the ground. Further, according to the third aspect of the invention, since the front wheels are driven by one drive source such as an engine, the structure is a roller ski with a drive source which is simple in structure and easy to control. You can enjoy.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the roller ski of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a roller ski embodying the above-mentioned first invention, second invention and third invention, and FIG. 2 is a plan view in which a part thereof is cut away. In these figures, a roller ski 1 includes a pair of elongated skis 2, connecting means 3 for connecting the tip portions of the skis 2 to each other in a rotatable manner, wheels 4 for supporting the connecting means 3, and each ski. It is provided with a pair of casters 5 of a rotation angle limiting type that respectively support the rear ends of the plates 2.

The ski 2 can be made of a laminated plate or the like using glass fibers similar to a ski for snow, and the width of the portion near the rear end is enlarged outward to form a footrest portion 6. ing. At least the center of the footrest portion 6 is arranged outside the center line of the ski 2. This is because by placing the footrest portion 6 outside the center line indicated by the one-dot chain line connecting the grounding point of the roller 9 which is the front wheel and the grounding point of the caster 5 which is the rear wheel, the weight of the athlete This is because the plane of the ski is inclined with respect to the ground contact surface when the ski moves. The footrest 6 may be provided with only the mark of the foot mold 7 as a mark as shown in FIG. 2, but a rubber plate having a large friction coefficient or a sheet having a roughened surface is attached to prevent slippage, It is also possible to provide foot-shaped depressions. Furthermore, the ski 2 has its connecting means 3
It is possible to fold it in a chevron shape only in the part near the top. In order to make it bendable in this way, the ski 2 is divided into front and rear at this portion, and this portion is further connected by a bending portion 8 constituted by a hinge mechanism such as a hinge.

The wheel 4 at the tip of the ski 2 is composed of a roller 9 and a bracket 10 supporting the roller 9, and a mounting plate 11 is provided on the bracket 10. The mounting plate 11 is bent in a dogleg shape from the middle, and when mounted on the connecting means 3, the wheel 4 is inclined obliquely upward to lower the front height of the ski 2 from the road surface. . A small engine with a reducer is fixed to this mounting plate 11,
The output shaft and the roller 9 are connected via a transmission belt 43. The control of the engine speed or the attachment / detachment control of the clutch provided in the engine or the like can be performed by a wireless remote switch held by the skier, an appropriate wired switch, or a foot switch. As an example of an engine, an extremely small engine with an engine displacement of 20 to 30 CC can be installed. A motor equipped with a battery may be used as a drive source. In any case, only one drive source is required. next,
The rear end of the ski 2 is bent so as to incline upward, and is further bent horizontally, and a caster 5 of a rotation angle limiting type is attached to the lower side of the portion thus formed that is higher than the road surface. Has been. With this structure, the height of the rear side of the ski 2 from the road surface is reduced.

FIG. 3 is an enlarged plan view of the rotation angle limiting type caster 5 in FIG. 1 as seen from the direction I-I. The caster 5 includes a roller 12, a bracket 13 that rotatably supports the roller 12, a vertical shaft 14 that rotatably supports the bracket 13 on the ski 2, and a rotation of the bracket 13 from the axis of the ski 2 to the left and right by an angle β. It is constituted by a stopper 15 for limiting the range. Stopper 15
Is composed of a U-shaped stopper portion 16 having an interval increasing toward the tip and a flange portion 17 horizontally bent from the lower end thereof, and the flange portion 17 is fixed to the ski 2 by a plurality of screws 18.

FIG. 4 is an enlarged perspective view showing the connecting means 3 in an exploded manner. A step portion 19 having a reduced thickness is formed at the tip of each ski 2, and the mounting plate 1 for the wheel 4 is provided therebetween.
1 is inserted. The width of the insertion portion of the mounting plate 11 is expanded in an arc shape, and a transverse groove 20a and a longitudinal groove 20b are provided in the center portion thereof so as to penetrate in a cross shape. A bolt hole 21 is formed at the center of the step portion 19 of each ski 2.
Each ski 2 is provided with a bolt 22 and a nut 23 (see FIG. 1) that pass through the vertical groove 20b of the mounting plate 11 inserted.
(See) is rotatably connected.

A pin 24 is fixed to the step portion 19 of the right ski 2 at a widthwise interval from the bolt hole 21, and a pin 24 is fixed to the step portion 19 of the left ski 2 from the bolt hole 21. Pins 25 are fixed at intervals on the side opposite to the pin 24 in the width direction, and the pins 24 and 25 are inserted into the lateral grooves 20a of the mounting plate 11, respectively. The grooves 20a, 20b of the mounting plate 11, the bolts 22, the nuts 23, the pins 24, the pins 25, and the like constitute a synchronous rotation means 26. When the pair of skis 2 and 2 are opened and closed around the bolt 22, the synchronous rotation means is provided with the wheel 4 on the extension line of the bisector of the opening and closing angles of both skis 2 and 2.
The direction of progress of the.

FIG. 5 is an explanatory view schematically showing the synchronous rotation means 26, and the ski 2 is shown as a narrow width for easy understanding. Each ski 2 has a cross-shaped through groove 2
It is rotatably supported by a common bolt 22 located in a groove portion in the front direction of 0, and each pin 24, 2
5 are slidably inserted into the left and right grooves of the through groove 20. Such a structure of the synchronous rotation means is used as a leg opening / closing means of a compass used for creating a figure. That is, in the compass, the knob portion that is held between the index finger and the thumb is always oriented in the extension direction of the bisector of the left and right legs. In the above-mentioned example, as the synchronous rotation means, the one constituted by the cross-shaped horizontal groove 20a, the vertical groove 20b, the bolt 22, the nut 23 and the pair of pins 24 and 25 is used, but the invention is not limited to this, and various drawing compasses are used. The known synchronous rotation means used in the above can be used.

The operation of the roller ski shown in FIGS. 1 to 4 will now be described. The skier puts his left and right feet on the footrest portions 6 of each ski 2 shown in FIG. Exercise. Due to this movement, the rear end of each ski 2 is opened left and right about the connecting means 3. At that time, the rollers 12 of the respective casters 5 try to rotate in a direction (horizontal direction) orthogonal to the axial direction of the ski 2, but the rotation angle is preset by the stopper 15 as shown in FIG. Limited to the range. Therefore, the driving force in the left-right direction by the foot is converted into the driving force in the forward direction by the casters 5, and the ski moves forward. A bicycle utilizing the above principle in this range is publicly known as a modified bicycle which has already been used in an amusement park or the like.

According to the present invention, in addition to the above structure, each ski 2
The pair of skis 2 and 2 are opened and closed at equal intervals to the left and right with respect to the traveling direction of the front wheels 4 by the synchronous rotation means 26 provided in the connecting means 3. That is, with the left and right skis 2 open at equal angles, as shown in FIG.
2 is located in the cross-shaped vertical groove 20b, and the left and right pins 24,
25 is located in the lateral groove 20a. When the left and right skis 2 are opened from this state, the bolts 22 will have a cross-shaped vertical groove 20.
Move forward in b, and the left and right pins 24 and 25 move to the lateral groove 20a.
They move inside to the outside and are fixed to each other.

On the contrary, when the left and right skis 2 are closed from the above state, the bolts 22 relatively move rearward in the cross-shaped vertical groove 20b, but the left and right pins 24 and 25 are lateral grooves 20a.
They move inside and approach each other. In this way, even if the left and right skis 2 are opened and closed, the left and right pins 24 and 25 are fixed in the groove positions as they are, so that the left and right skis 2 are fixed to the wheels 4.
Is opened and closed at an equal angle α (FIG. 5) centered on the traveling direction. There are two main means for changing the gliding direction. First, in the first aspect of the present invention, the center of gravity of the skier is placed at the center of both skis, and the heels of both legs are pushed out so as to twist in the direction of the arrow in FIG. 2 so as to intersect the center line of each ski. Then, the reaction force changes the direction of the caster 5 as shown in the drawing, and the traveling direction can be made opposite to the direction of the caster.

In the second aspect of the present invention, when the center of gravity of the skier is moved to the side opposite to the bending direction, the roller ski 1 tilts with respect to the road surface 40 as shown in FIG. 6 (A). At the same time, the orientation of each caster 5 changes. And the ski 2 of the person who has become lighter due to the weight shift (left side of FIG. 6A.B)
, But the caster 5 does not leave the road surface 40 because the bent portion 8 bends in a mountain shape.
You can change the gliding direction. Therefore, the skier can always slide in a stable posture. It should be noted that if the center of gravity is moved and the ski 2 is tilted, the direction can be changed to the direction opposite to the direction of movement of the center of gravity, like skiing on snow, but the tilt of the ski changes the direction of the casters as shown in FIG. 6 (B). , The rear part of the ski bulges in the direction opposite to the direction in which it bends, and the front wheels try to go straight, so the direction can be changed. In the second aspect of the present invention, the direction of the roller ski can also be obtained by pushing the side of the skier's heel in a twisting manner as in the first aspect of the present invention without tilting the ski about its axis. It can be changed. Further, as an advanced skiing technique, by pushing the heel of the skier as described above and making the caster 5 face rightward as shown in FIG. Like skiing
It is possible to stop the roller ski suddenly.

FIG. 7 is a side view showing another example of the bent portion 8, and FIG. 8 is a plan view thereof. The bent portion 8 includes an L-shaped mounting portion 27 fixed to the front upper surface of the divided portion of each ski 2.
A pressing means 28 such as a compression spring attached downward is attached to the tip of the divided portion, that is, a portion extending upward to the rear side. It is designed to be pressed downward. When changing the sliding direction, if the center of gravity of the skier is moved to the side opposite to the bending direction, the lightened ski 2 is bent into a mountain shape by the action of the mounting portion 27 and the pressing means 28. Therefore, it becomes easier to tilt the roller ski 1.

When such a bent portion 8 is used, the ski 2 is always bent upward by the mounting portion 27 and the pressing means 28, so that the ski 2 can be cushioned. . When the roller ski is not used, the ski 2 is automatically folded by the pressing means 28 of the bent portion 8. Further, an auxiliary plate 29 is attached to the inside of the footrest portion 6 of each ski 2 shown in FIGS. 7 and 8 so as to face upward. The skier can change the inclination of the ski 2 more easily by pushing the auxiliary plate 29 by the side of the leg when changing the direction of the roller ski.

FIG. 9 shows an example in which the roller ski shown in FIG. 1 is provided with a handle. A handle 30 is connected to a mounting plate 11 of the roller ski 1 so as to be tiltable back and forth, and the handle 30 has an upper end in the left-right direction. A lever 31 that extends to is provided. By inclining the lever 31 to the left and right (sideways), the skier can more easily change the direction of inclination of the ski 2 around its axis.
Further, since the handle 30 helps stabilize the posture, it is particularly suitable for beginners. A control device for the engine 42, a brake, and the like can be attached to the handle 30.

Although the first and second inventions have explained the method of sliding a roller ski with left and right leg forces, the roller ski of the first invention can also be slid using a stock. In that case, even if the left and right skis 2 are made to be substantially parallel and shaken to the left and right, the wheels 4 at the tip end always face the advancing direction of the skis 2 as described above. It is also possible to do so. Furthermore, the third aspect of the invention is to mount a drive source such as a small engine on a roller ski to drive the roller 9 (wheel 4) which is the front wheel. Even in that case, the same high-level technology as described above can be used.

[0021]

The roller ski of the present invention has the following effects. (1) In the roller ski according to the first aspect of the invention, the action of the synchronous turning means provided in the connecting portion causes the turning angle of each ski to change the turning angle of each ski even if there is a difference in the left and right leg force of the skier. Can always be equiangular from the center of. Therefore, the straight line of the roller ski can be easily performed. Also,
According to the first aspect of the present invention, the center of gravity of a skier is placed at the center of both skis, and the heels of both legs are pushed out so as to twist in the direction of the arrow in FIG. The direction of the caster 5 can be changed as shown in the drawing so that the direction of travel of the roller ski can be made opposite to the direction of the caster 5. (2) In the roller ski of the second invention, when the center of gravity of the skier is moved to the side opposite to the bending direction, the roller ski 1 tilts with respect to the road surface 40 as shown in FIG. 6 (A). At the same time, the orientation of each caster 5 changes. The ski 2 that has become lighter due to the weight shift (left side in FIG. 6A.B.) floats upward, but the bent portion 8 bends into a mountain shape, so the caster 5 does not leave the road surface 40 and runs in the running direction. Can be changed. Therefore, the skier can always slide in a stable posture.

When the ski 2 is tilted by moving the center of gravity, the direction can be changed to the direction opposite to the moving side of the center of gravity like skiing on snow. However, since the ski is tilted, the casters are oriented as shown in FIG. 6 (B). As the ski rear part bulges in the direction opposite to the bending direction and the front wheels try to go straight, the direction can be changed. In the second aspect of the present invention, the direction of the roller ski can also be obtained by pushing the skier laterally like twisting the heel of the skier as in the first aspect of the present invention without tilting the ski about its axis. It can be changed. That is, by combining the first invention and the second invention, more stable gliding is possible. (3) In the second aspect of the present invention, by further providing an auxiliary plate 29 on the side of the ski 2, the auxiliary plate 29 can be pushed by the side of the leg portion when changing the direction of the roller ski to make the ski easier. The inclination of 2 can be changed. (4) By further attaching the handle 30 to the second invention, the skier can more easily change the direction by tilting the handle 30 left and right. Further, since the handle 30 helps stabilize the posture, it is particularly suitable for beginners.

(5) In the roller skis according to the first and second aspects of the invention, a ski can be used for skiing, in which case the left and right skis 2 are made substantially parallel and shaken to the left and right. Even if the vehicle slides, the wheels 4 at the tip end always face the traveling direction of the skis 2, so that various high-level technologies can be used. (6) In the second aspect of the invention, in order to allow the pair of skis to be bent upward in a chevron shape, the bending portion 8 configured to press the divided portion of each ski 2 from above with the pressing means 28. When using, when converting the gliding direction,
When the center of gravity of the skier is moved to the side opposite to the bending direction, the lightened ski 2 is pressed downward at the rear side of the divided portion by the pressing means 28 to bend the ski 2 into a mountain shape. Therefore, it becomes easier to tilt the roller ski 1. (7) Further, in the third aspect of the invention, since the front wheels can be driven by one drive source such as an engine, the structure is a roller ski with a drive source that is simple and easy to control, and there is no snow. You can enjoy skiing on level ground. That is, it can be a self-propelled roller ski. Even in that case, the left and right skis 2 as in the above case
It is possible to make full use of high-quality technology such as Christiania by swinging in parallel with each other and shaking to the left or right.

[Brief description of drawings]

FIG. 1 is a side view of a roller ski embodying a first invention, a second invention and a third invention of the present application.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged plan view of the caster 5 in FIG. 1 viewed from the I-I direction.

FIG. 4 is an enlarged perspective view showing the connecting means 3 in FIG. 1 in an exploded manner.

5 is an explanatory view schematically showing the synchronous rotation means 26 in FIG.

FIG. 6 is an explanatory view showing a state where the roller ski 1 embodying the second invention of the present application is tilted with respect to the road surface 40 and used.

FIG. 7 is a side view showing an example of a bent portion 8 in the second invention of the present application.

FIG. 8 is a plan view of FIG.

9 is a side view of the roller ski shown in FIG. 1 provided with a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller ski 2 Ski plate 3 Connecting means 4 Wheels 5 Casters 6 Foot rest part 7 Foot type 8 Bending part 9 Roller 10 Bracket 11 Mounting plate 12 Roller 13 Bracket 14 Vertical shaft 15 Stopper 16 Stopper part 17 Flange part 18 Screw 19 Step Part 20a Horizontal groove 20b Vertical groove 21 Bolt hole 22 Bolt 23 Nut 24 pin 25 Pin 26 Synchronous rotation means 27 Attachment part 28 Pressing means 29 Auxiliary plate 30 Handle 31 Lever 40 Road surface 42 Engine 43 Transmission belt

Claims (3)

(57) [Claims] 1. A pair of elongated skis (2) and connecting means (3) for rotatably connecting the end portions of the skis (2) to each other.
And a pair of wheels 4 for supporting the connecting means 3 and a pair of casters 5 of a rotation angle limiting type for supporting the rear end portions of the pair of skis 2, respectively.
1. A roller ski characterized in that a synchronous rotation means 26 is provided for rotating each ski 2 at an equal angle around the traveling direction of the ski. 2. A pair of elongate skis 2 and a connecting means 3 for rotatably connecting the front ends of the skis 2 to each other.
And a pair of wheels 4 for supporting the connecting means 3 and a pair of casters 5 of a rotation angle limiting type for supporting the rear end portions of the pair of skis 2, respectively. A roller ski characterized by being bent into a chevron shape. 3. The roller ski according to claim 1, wherein a drive source such as a drive engine 42 is connected to the wheels 4.