JP2000289683A - Snowmobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convert the rotating torque of a spiral body into the propelling force of a sliding car body by the rotation of the spiral body, and to run the sliding car body by continuing the contact rotation of the spiral body. SOLUTION: At the propelling part 2 of a sliding car body 1 which can slide on a snow surface M, two spiral bodies 3 made by setting a spiral vane on the outer peripheral surface of a rotating shaft are provided in a parallel form at both the left side and the right side positions by setting the rotating axial line in the sliding direction, so as to provide a driving mechanism 5 to rotate the spiral bodies. Since this structure obtains the propelling force by rotating the spiral bodies 3, it can be made in a very simple structure, the small size and the light weight can be realized, and the manufacture cost is also reduced remarkably. The energy loss is also little, a high speed can be realized, and it can be utilized for many purposes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snowmobile used, for example, when gliding on a snowy or ice surface.

[0002]

2. Description of the Related Art Conventionally, as a snowmobile of this type, there is known a structure in which a traveling body is provided with an endless track type or wheel type thrust unit.

[0003]

However, in the case of the above-mentioned conventional structure, there are disadvantages that the structure tends to be complicated, that it is easy to increase the size and weight, and that the manufacturing cost increases accordingly.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve such inconvenience, and among the present invention, the invention described in claim 1 is characterized in that a sliding body capable of sliding on a snowy surface is provided. A thrust portion capable of propelling the sliding vehicle body, and two thrust bodies each having a spiral blade attached to the outer peripheral surface of a rotary shaft provided on the thrust portion. And a drive mechanism for rotating the spiral body is arranged in parallel with the snowmobile.

Further, according to the invention of claim 2, the twist direction of the spiral blade of one of the two spiral bodies is formed to be right-handed and the spiral direction of the spiral blade of the other spiral body is made to be left-handed. Forming, disposing the right-handed spiral at the left position in the sliding direction, and disposing the left-handed spiral at the right position in the sliding direction, and rotating one of the right-handed spirals rightward in the sliding direction. And a drive mechanism for rotating the other helical body of the left-handed twist leftward in the sliding direction is provided.
The invention according to claim 3 is characterized in that the spiral blade of the spiral body is formed in a plurality of rows,
Further, the invention according to claim 4 is characterized in that the front end of the spiral blade of the spiral body in the sliding direction is formed as a sharp part, and the invention according to claim 5 is characterized in that: The lead of the spiral blade of the spiral body is made different in the direction of the rotation axis.

[0006]

1 to 6 show an embodiment of the present invention. FIGS. 1 to 3 show a first embodiment, FIG. 4 shows a second embodiment, FIG. 5 shows a third embodiment, FIG. 6 shows a fourth embodiment.

In the first embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes a sliding body, in which a sliding surface 1a which can slide on a snow surface M is formed around a lower portion and a seat portion 1b is formed on an upper portion.
And a steering sled 1c is arranged at the front.

[0008] Reference numeral 2 denotes a thrust portion, which in this case is composed of two helical bodies 3.4, and the helical bodies 3.4 are provided with rotating shafts 3a.
Spiral blades 3b, 4b are attached to the outer peripheral surface of 4a, and these two spiral bodies 3, 4 are arranged in parallel with each other at both left and right positions by disposing the rotation axes 3c, 4c in the sliding direction K. Body 1
To form a cover portion 1f close to the spiral blades 3b and 4b,
A drive mechanism 5 for rotating the two spiral bodies 3 and 4 is provided and configured.

In this case, as shown in FIG. 2, the spiral direction of the spiral blade 3b of one of the two spiral bodies 3, 4 is formed to be right-handed and the spiral blade 4b of the other spiral body 4 is twisted. The direction is formed into a left-handed spiral, and a right-handed spiral 3 is horizontally provided by a bearing 1d at a left position in the sliding direction K, and a left-handed spiral 4 is horizontally provided by a bearing 1e at a right position in the sliding direction K. A driving motor 5a is connected to the rotating shaft 3a, and a gear train 6 composed of a pair of gears is interposed between one rotating shaft 3a and the other rotating shaft 4a. One of the helical members 3 is rotated rightward in the sliding direction K, and the other helical member 4 with left twist is rotated leftward in the sliding direction K.

In this case, the front edge F and the outer edge E of the spiral blades 3b, 4b of the spiral bodies 3, 4 in the sliding direction K are formed as sharp portions 3d, 4d, and the spiral blades 3b of the spiral bodies 3, 4 are formed.
The lead L of 4b is made constant in the direction of the rotation axes 3c and 4c.

Since the first embodiment has the above-described configuration, the thrust portions 2 are arranged in parallel at both left and right positions in the sliding direction K, and are provided on the outer peripheral surfaces of the rotating shafts 3a and 4a.
When the two spiral bodies 3 and 4 provided with 4b are rotated by the driving mechanism 5, the spiral bodies 3.4 penetrate into the snow surface and inside the snow and rotate in contact therewith, and the spiral bodies are rotated by the contact rotation of the spiral bodies 3 and 4. The rotation torque of 3.4 is converted into the propulsive force of the sliding body 1, and the sliding body 1 can be slid by continuing the contact rotation of the spiral bodies 3, and the propulsive force is obtained by the rotation of the spiral bodies 3 and 4. Therefore, a very simple structure can be achieved, the size and weight can be reduced accordingly, the manufacturing cost can be significantly reduced, the energy loss is small, and high-speed rotation can be performed. It can be used not only for business such as ski resorts, but also for home use, and can be used for children's play by adopting a pedal type structure as a drive mechanism,
Further, it can be used for a transport vehicle or a thrust unit of a snow blower, and can be applied not only to the snow surface but also to other uses such as an ice surface and a water surface.

Further, in this case, the spiral direction of the spiral blade 3b of one of the two spiral bodies 3, 4 is formed to be right-handed and the spiral blade 4b of the other spiral body 4 is twisted.
Is formed into a left-handed twist, and a right-handed spiral 3
Is disposed at the left position in the sliding direction K, the left-handed spiral 4 is disposed at the right position in the sliding direction K, and one of the right-handed spirals 3 is rotated rightward in the sliding direction and the other of the left-handed twisted. Since the driving mechanism 5 for rotating the spiral body of the spiral body to the left in the sliding direction is disposed, the two spiral bodies 3.
In this case, the sliding body 1 can be straightened by the twisting and rotating in different directions of the spiral blades 3b and 4b of the spiral body 3b, so that the sliding body 1 can smoothly slide. Since the front edge F of the four spiral blades 3b and 4b in the sliding direction K is formed in the sharp part 3d, penetration of the front edge F of the spiral blades 3b and 4b into the snow surface M becomes good, Propulsion efficiency can be increased accordingly.

The second embodiment shown in FIG. 4 shows another structure. In this case, the spiral blades 3b, 4b of the spiral bodies 3, 4 are formed in two rows, and the pitch G between the axes of the rotating shafts 3a, 4a is changed by a spiral. The blades 3b and 4b are configured so that the outer edge rotation trajectory circle diameter is smaller than the diameter D and the phases of the twists are shifted from each other in order to prevent mutual interference between the spiral blades 3b and 4b.

The third embodiment shown in FIG. 5 also shows another structure. In this case, the spiral blades 3b, 4b of the spiral bodies 3, 4 are formed in four rows, and the pitch G between the rotating shafts 3a, 4a is changed by a spiral. The blades 3b and 4b are configured so that the outer edge rotation trajectory circle diameter is smaller than the diameter D and the phases of the twists are shifted from each other in order to prevent mutual interference between the spiral blades 3b and 4b.

The fourth embodiment shown in FIG. 6 also shows another structure. In this case, the spiral blades 3b, 4b of the spiral bodies 3, 4 are formed in three rows, and the pitch G between the axes of the rotating shafts 3a, 4a is changed by a spiral. The blades 3b and 4b are configured so that the outer edge rotation trajectory circle diameter is smaller than the diameter D and the phases of the twists are shifted from each other in order to prevent mutual interference between the spiral blades 3b and 4b.

In the second to fourth embodiments, the same operation and effects as those of the first embodiment can be obtained and the spiral blades 3b and 4b are formed in a plurality of rows. Gliding can be performed well.

Although not shown, the spiral 3
The lead L of the spiral blades 3b and 4b is connected to the rotation axes 3c and 4
In some cases, the lead L at the front in the sliding direction is different from the lead L at the rear in the sliding direction,
By changing the lead L, it is possible to adapt to the snow quality.

The present invention is not limited to the above-described embodiment. For example, the rotation direction of the spiral bodies 3 and 4, the spiral winding direction, the shape of the spiral The spiral blades are designed by appropriately changing the number of spiral blades, the lead of the spiral blades, the material of the spiral blades, the surface treatment for preventing snow from adhering, and the like.

[0019]

As described above, according to the first aspect of the present invention, the thrust portions are arranged in parallel at both left and right positions in the sliding direction, and spiral blades are attached to the outer peripheral surface of the rotating shaft. When the two spiral bodies are rotated by the drive mechanism, the spiral body rotates in contact with the snow surface, the rotational rotation of the spiral body is converted into the propulsion force of the sliding body by the contact rotation of the spiral body, and the sliding body is rotated by the continuous rotation of the spiral body. Can be skated,
Since the structure is such that a propulsive force is obtained by the rotation of the helical body, the structure can be made very simple, the size and weight can be reduced accordingly, the manufacturing cost can be significantly reduced, and the energy loss is small. It can be rotated at high speed and can be used for many purposes.

According to the second aspect of the present invention, the spiral direction of the spiral blade of one of the two spiral bodies is formed to be right-handed and the spiral direction of the spiral blade of the other spiral body is changed to the right. Form a left-handed helix, arrange a right-handed spiral at the left position in the sliding direction, and arrange a left-handed spiral at the right position in the sliding direction, and rotate one of the right-handed spirals rightward in the sliding direction. Since the drive mechanism is arranged to rotate the other spiral body of the left twist in the leftward direction in the sliding direction, the twisting of the spiral blades of the two spiral bodies in the different directions and the rotation in the different directions improve the straightness of the sliding vehicle body. According to the third aspect of the present invention, the front end of the spiral blade of the spiral body in the sliding direction is formed as a sharp part. From the snow Infested of the front edge of the spiral blade to is improved, it is possible to increase the much propulsion efficiency.

Further, in the invention according to claim 4, since the spiral blade of the spiral body is formed in a plurality of rows, the sliding of the sliding vehicle body can be performed favorably. In the invention described in the fifth aspect, it is possible to adapt to the snow quality or the like by changing the leads of the spiral blade of the spiral body in the direction of the rotation axis.

As described above, the initial purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory side sectional view of a first embodiment of the present invention.

FIG. 2 is an explanatory plan view of the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the first embodiment of the present invention as viewed from the rear to the front.

FIG. 4 is a cross-sectional view of the second embodiment of the present invention as viewed from the rear to the front.

FIG. 5 is a cross-sectional view of the third embodiment of the present invention as viewed from the rear to the front.

FIG. 6 is a cross-sectional view of a fourth embodiment of the present invention as viewed from the rear to the front.

[Explanation of symbols]

 M Snow surface K Sliding direction F Front edge 1 Sliding body 2 Thrust unit 3 Spiral body 3a Rotating shaft 3b Spiral blade 3c Rotating axis 4 Spiral 4a Rotating shaft 4b Spiral blade 4c Rotating axis 5 Drive mechanism

Claims (5)

[Claims] 1. A sliding body that can slide on a snowy surface and a thrust portion that can propel the sliding body, and the thrust portion is provided with spiral blades on the outer peripheral surface of a rotating shaft. A snowmobile wherein a spiral body is arranged in parallel at both left and right positions with a rotation axis in a sliding direction, and a drive mechanism for rotating the spiral body is provided. 2. The spiral body of one of the two spiral bodies, wherein the spiral direction of the spiral blade of one of the spiral bodies is formed in a right-handed spiral, and the spiral direction of the spiral blade of the other spiral body is formed in a left-handed manner. Is disposed at the left position in the sliding direction, the left-handed spiral is disposed at the right-hand position in the sliding direction, and one of the right-handed spirals is rotated rightward in the sliding direction and the other of the left-handed twisted. The snowmobile according to claim 1, wherein a driving mechanism for rotating the spiral body leftward in the sliding direction is provided. 3. The snowmobile according to claim 1, wherein the spiral blade of the spiral body is formed in a plurality of rows. 4. The snowmobile according to claim 1, wherein a front end of the spiral blade of the spiral body in the sliding direction is formed as a sharp part. 5. The helical blade according to claim 1, wherein the helical blades have different leads in the direction of the axis of rotation.
The snowmobile according to 2, 3 or 4.