JP2003175883A - Small snow vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small snow vehicle for leisure and practical use, in which a frame main body of the small snow vehicle mounts a driving means thereon, an endless crawler belt means is swingably disposed to the frame main body other than a rear ski, the endless crawler belt means is driven by a drive means, and the small snow vehicle is steered by using a handle so that the small snow vehicle not only runs down but also climbs a hill of an snow surface or an ice surface. <P>SOLUTION: In the small snow vehicle, a handle member is disposed to a front ski to be steerable, and the frame main body for rotatably supporting the handle member is attached to the rear ski so that the small snow vehicle can run on the snow. The small snow vehicle comprises: the drive means mounted to the frame main body; the endless crawler belt means swingably supported by the frame main body through a shaft member and driven by the drive means; and an elastic member disposed between the endless crawler belt means and the frame main body and pressing a rear side of the endless crawler belt means to constantly rotate on a snow surface side around the shaft member. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a lightweight and compact structure in which a driving means is mounted on a small snow running body which is convenient to be loaded onto an automobile and is easy to carry. Not only the improvement of a small snow running body that can run uphill on an inclined surface freely.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-4-84090, JP-A-7-149265 and JP-A-8-2.
As shown in Japanese Patent Publication No. 07838, a front ski is provided in front of the frame, and endless track means is provided at the rear of the frame instead of skis, and the endless track means is driven by driving an engine mounted on the frame. A so-called snowmobile that travels on a snow surface is known (hereinafter referred to as "first conventional device"). In this snowmobile, suspensions are provided between the frame and the ski and between the frame and the endless track means, respectively, and a cover panel is provided so as to cover the frame. The front ski is steered by driving the steering wheel to drive freely on the snow. Further, the technique disclosed in Japanese Patent Laid-Open No. 2000-2888152 (hereinafter referred to as "second conventional device") is also known. This is a structure in which a footrest plate is provided on a frame spanning between the front ski and the endless track means, and a control lever for controlling the output of the engine mounted on the endless track means side with one hand is provided. is there. With the occupant on the footrest standing still, the control lever is operated to control the engine output, and the occupant on the footrest appropriately shifts or shifts the weight of the occupant. It is one that changes and travels.
Further, as shown in FIG. 8, a simple small snow running body called a so-called snow scooter for sports is also known (hereinafter referred to as “third conventional device”). This is because the frame body C is hung and connected between the front sole A and the rear sole B, and an occupant riding on the rear sole B steers the snow scooter by steering the steering wheel D. It is a structure that slides down a surface.

[0003]

However, in the first conventional device, the structure is large as a snowmobile, and the number of constituent parts is large, which makes it complicated.
Since it is heavy and has a large overall size, it is difficult to load and carry it on a vehicle such as an automobile, and its handling is poor, and as a result, users are limited to special users. Furthermore, the price of such a snowmobile is high, and there is also a problem in that it is disadvantageous in terms of selling a large amount. Further, the second conventional device has a simple structure unlike the first conventional device because of the structure in which the occupant travels in a standing posture, and the weight is considerably reduced. However, since the second conventional device is not provided with a handle for steering the front ski, and has a structure in which the traveling direction is simply controlled by moving the weight, it requires a great deal of skill to operate. As a result, there was a problem that it was difficult for a beginner to drive and steer. Further, the snow scooter according to the third conventional device has a light weight unlike the first and second conventional devices and is convenient for transportation, and since the handle D is provided on the frame body C, the snow scooter has excellent maneuverability. It is easy and does not have the problem of requiring skill to operate unlike the second conventional device. However, because the snow scooter does not have a power source, it is not a structure that allows it to run downhill but to run on its own. For this reason, there is a problem that it can be used only at a ski resort where skiing is permitted, and it is not suitable for the purpose of transporting materials and is not suitable for practical use.

In view of the above problems, the present invention has been devised and developed by devising the above-mentioned snow scooter. The driving means is mounted on the frame body of a small snow running body, and the frame body other than the rear ski is mounted on the frame body. The crawler belt means is provided so as to swing, and the crawler belt means is driven by the drive means to steer the small snow traveling body by operating the steering wheel, so that the snow surface and the ice surface are not only lowered but also climbed. It is an object of the present invention to provide a small snow running body that can be used for traveling leisure and practical purposes.

[0005]

The present invention has the following constitution to achieve the above object. That is, claim 1
A small snow running body according to the invention described above is a small snow running body provided with a handle member on a front ski to enable steering, and a frame body for rotatably supporting the handle member attached to a rear ski so as to run on snow. In the traveling body, drive means mounted on the frame body, endless track zone means swingably supported by the frame body via a shaft member and driven by the drive means, the endless track zone means and the above An elastic member is provided between the frame main body and the rear side of the crawler belt means for constantly pressing the rear side of the endless track zone means so as to rotate around the shaft member toward the snow surface.

[0006] The invention according to claim 2 relates to the small snow running body according to claim 1, wherein the crawler belt means has a base plate for pivotally supporting the shaft member, a driving sprocket and a plurality of drive sprockets provided on the base member. Of the driven sprocket, and an endless orbital band that moves along the outer peripheral end surface of the base plate that meshes with both the original and driven sprocket, and the driven sprocket is provided coaxially with the shaft member.

The invention according to claim 3 is the invention according to claim 1 or 2.
According to the small snow traveling body described, the driven sprocket that first engages with the endless orbital zone that moves from the driving sprocket among the plurality of driven sprockets is between the substrate and the driven sprocket. It is characterized in that a tension means for constantly pressing the endless track zone to the snow surface side is provided.

A fourth aspect of the present invention relates to the small snow running vehicle according to any one of the first to third aspects, wherein the rear ski covers the endless track zone means and the occupant's foot. It is characterized in that a section is provided.

A fifth aspect of the present invention relates to the small-sized snow traveling body according to the fourth aspect, wherein the cover portion is formed in a tunnel shape in its transverse cross section over the longitudinal length thereof.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments shown in FIGS. FIG. 1 is an external perspective view of a small snow running body according to an embodiment of the present invention, and FIG.
Is a side view of the small snow running body, FIG. 3 is an enlarged side view of the endless track means, FIG. 4 is a bottom view of FIG. 2, and FIG. 5 is a cross-sectional view taken along the line VV of FIG.

As shown in the figure, a small snow running body 1 has a frame main body 2 formed by using, for example, a pipe material, and a handle 3 is provided on a handle supporting portion 2a thereof so as to be rotatable. . The lower end of the handle 3 is fixed to the front ski 4, and the front ski 4 is steered by operating the handle 3. The frame body 2 extends rearward in a closed loop from the handle support portion 2a as a starting point,
A pair of rear skis 5 arranged in parallel so that an occupant can board is fixed via a mounting tool 6. Between the rear skis 5, a cover member 7 having a tunnel cross section is provided to cover the endless track zone means 9. The cover member 7 is formed such that the front apex portion 7a is higher than the rear apex portion 7b and has a step shape over the front-rear length. These front and rear tops 7a and 7b are portions on which the feet are placed, but in some cases, they can be formed so that an occupant can sit on the tops and steer the handle 3. The cover member 7 may be formed of, for example, a fiber reinforced synthetic resin material, or may be integrally molded with the rear ski 5. The tunnel was formed
This is to remove the snow scraped out by the endless track means 9. Therefore, in some cases, the rear ski 5 may be formed so as to be connected to each other by flat surfaces so as to be flush with the rear ski 5 without forming a tunnel shape. Good.

A support bracket 2b is attached to a handle supporting portion 2a which constitutes a part of the frame body 2, and an engine 8 having a displacement of, for example, 30 to 50 cc is used as a driving means on the support bracket 2b, a rubber,
It is mounted with a damping member such as a spring interposed. The engine 8 is driven by the operation of the throttle lever 8a, and when the engine speed rises from idling rotation to reach a certain speed, the automatic centrifugal clutch 8b provided on the engine output shaft is connected, and the endless track means 9 described later is operated. To drive. Reference numeral 8c in FIG. 1 indicates a starter lever.

Next, the crawler belt means 9 shown in FIGS. 3 to 5 will be described. This endless orbital zone means 9 is a substrate 10
And a shaft member 11 which penetrates the left and right sides of the substrate 10 and pivotally supports the substrate 10 on the support bracket 2b of the frame body 2, and a pair of members connected to the shaft member 11 and disposed on both sides of the substrate 10. Prime mover sprocket 12,
A pair of first rotatably arranged on both sides of the substrate 10
Driven sprocket 13 and second driven sprocket 1
4 and an endless orbital zone 15 composed of a caterpillar known per se that moves along the outer peripheral end surface 10a of the substrate 10.

A chain 16 forming a part of the endless track zone 15 is wound around each sprocket 12, 13, 14. Further, the endless track zone 15 is provided with a large number of scraping plates 15a having an L-shaped cross section for facilitating scratching of the snow surface. The endless track zone 15 may be formed of, for example, a synthetic resin in the shape of a belt instead of a caterpillar, and an uneven surface capable of scratching snow may be integrally formed on the outer surface thereof.

A driven pulley 17 for transmitting the driving force of the engine 8 to the driving sprocket 12 is attached to the shaft member 11. As a result, the driven pulley 17 is driven by the V belt 19 wound between the driven pulley 8d (FIG. 2) provided in the automatic centrifugal clutch 8c and the driven pulley 17, and the endless track zone 15 is moved along the outer peripheral end surface 10a. Therefore, the small-sized snow traveling body 1 is rotated in a direction in which the small snow traveling body 1 is advanced.

By the way, the first driven sprocket 13 that first engages with the endless track 15 moving from the driving sprocket 12 is provided with a tension means between itself and the substrate 10. The tensioning means includes a support tool 13a for rotatably supporting the first driven sprocket 13, a groove 13b formed in the substrate 10 so that the support tool 13a is slidably fitted, a support tool 13a and the substrate. And a tension spring 13c interposed between The tension spring 13c urges the first driven sprocket 13 by the spring force so as to constantly press the first driven sprocket 13 toward the snow surface via the support 13a, so that the endless track 15 does not loosen.

Further, the substrate 10 and the support bracket 2b
A pair of left and right coil dampers 1 for crimping the snow surface
8 is provided. The spring force of the spring 18 urges the endless track belt means 9 so as to always push the endless track belt means 9 around the shaft member 11 toward the snow surface. It suppresses the loss of engine driving force by reaching the snow surface.

Although not shown, the small snow running body 1
When a brake mechanism for braking the shaft is provided, the shaft member 11
Is provided with a drum type brake mechanism, or a pedal is provided on the frame body 2, and a brake mechanism is provided which exerts a braking force by pressing the pedal to press against the snow surface.

The operation of the embodiment will be described. As shown in FIG. 2, an occupant M rides on the small snow running body 1 and drives the engine 8. When the rotation speed of the engine 8 reaches a certain rotation speed, the automatic centrifugal clutch 8b is engaged. The driving sprocket 12 is driven via the V-belt 19. Then, the endless track zone 15 rotates along the outer peripheral end surface 10a of the substrate 10 while biting the scraping plate 15a into the snow surface. As a result, the occupant M can hold the steering wheel 3 and steer it to move the small snow traveling body 1 forward on the snow surface. By simply steering the steering wheel 3, the small snow traveling body 1 can be easily steered and driven. it can.

As described above, the small snow-running vehicle 1 has a structure in which the engine 8 can be driven while the steering wheel 3 is steered to travel not only when the snow surface is a descending slope but also when it is an ascending slope. You can easily run on the snow surface in any posture. For this reason, the small snowmobile 1
In addition to sports, it has the effect that it can be used for multiple purposes, such as patrols at ski resorts, patrols in forest areas, snow farms, ranches, police, etc., as well as work such as collection and delivery of mail and transportation of goods.

Further, the small snow running body 1 is simply a simple structure in which the engine 8 and the endless track zone means 9 are added to the basic structure of the snow scooter, so to speak, and is light and compact in size unlike a snowmobile. Yes, it has the effect of making it easy to carry and handle. In this case, the frame body 2 and the handle 3 are made of a synthetic resin material so that the weight can be further reduced. Further, since the endless track belt means 9 is provided with the coil damper 18 between the endless track belt means 9 and the frame main body 2, even if the endless track belt means 9 hits an obstacle on the snow surface and floats up, the spring force is applied. It is pressed against the snow surface. Therefore, the driving efficiency of the engine in the small snowmobile 1 can be favorably maintained.

Although the embodiment has been specifically described above, the specific structure is not limited to the embodiment.
The present invention includes a design change and the like within a range not departing from the gist of the present invention. For example, in the above-described embodiment, the snow plate is formed by the scraping plate 15a provided in the endless track means 9, but instead of this, as in the modification shown in FIG. 6, the first driven sprocket 13 and the first driven sprocket 13 are provided. The third driven sprocket 20 and the idle sprocket 21 are provided on the base plate 10 between the two driven sprockets 14, and the impellers 22, 23, and 23 are provided coaxially with the rotation axes of the driven sprockets 13, 14, 20.
24 is provided. The small snow-running vehicle 1 may be configured to run by driving the driving sprocket 12 and rotating the impellers 22, 23, 24 via the endless track zone 15 so as to scratch the snow surface. In this case, the tension means is provided on the idle sprocket 21, and the track 1
Prevent slack in 5. Further, in the above-described embodiment and modification, the rotation shaft of the driving sprocket 12 is
Although it is formed coaxially with the shaft member 11, the rotation shaft of the driving sprocket that engages with the endless track zone 15 may be provided at a position different from that of the shaft member 11. Further, although the engine 8 is used as the driving means, an electric motor may be used.
Further, although the coil damper 18 is used as the elastic member,
A coil spring may be used. Further, in the above embodiment, the cover member 7 integrated with the rear ski 5 is attached to the frame body 2, but as shown in FIG. 7, a pair of left and right step 3 made of rubber is attached to the frame body 2.
A structure in which the seat portion 31 located at the central portion of the cover member 7 is detachably attached to the frame main body 2 while the 0 is attached is also possible. That is, after inserting the seat leg portion 32 that supports the seat seat portion 31 into the frame body 2, tighten the bolts 33 to fix the seat leg portion 32 or loosen the bolt 33 to remove the seat seat portion 31 integrally with the seat leg portion 32. It can also be used. As a result, when the seat seat portion 31 is mounted, it is possible to travel in a comfortable posture while sitting, and when the seat seat portion 31 is removed, the seat seat portion 31 can be steered and run in a standing posture. It has an excellent effect in practical use.

[0023]

According to the small snow running body of the first aspect of the present invention, the driving means is mounted on the frame body, and the crawler belt means is supported on the frame body so as to swing through the shaft member. Further, an elastic member is interposed between the frame main body and the endless track band means, and the endless track band means is constantly pressed against the snow surface by the spring force of the elastic member. Therefore, even if the endless track means is pushed up against the snow surface due to running resistance from the snow surface, it is immediately pressed against the snow surface, so that the drive means has good driving efficiency and can exhibit smooth running performance. . In addition, since the small snow-based vehicle is equipped with a drive means, it is possible to freely drive not only downhill snow surfaces but also uphill snow surfaces, so that it is not only for leisure and sports, but also for ski patrols and snow areas. It has the effect that it can be used for multiple purposes such as patrols at forest management stations, ranches, police, etc., and also work such as collection and delivery of mail and transportation of goods. Further, according to the small-sized snow traveling body of the present invention, the basic structure of the snow scooter has a simple structure in which the drive means and the endless track means are added, and the rear ski and the endless track means are arranged in parallel. Since they are arranged, not only can the overall length be shortened, but unlike a snowmobile such as a conventional device, it is lightweight and compact in size, and it is easy to carry and handle.

According to the second aspect of the present invention, the shaft member for pivotally supporting the endless track belt means so as to swing on the frame body is coaxial with the rotation shaft of the driving sprocket provided on the base plate of the endless track belt means. The structure is simpler, and even if the endless track means hits an obstacle and turns around the shaft member, the driving force from the driving means is surely the driving sprocket. Therefore, it is possible to avoid the occurrence of power loss.

Further, according to the invention of claim 3, since the tension means is provided between the substrate and the driven sprocket, it is possible to prevent the occurrence of slack in the endless track.

Further, according to the invention of claim 4, since the rear ski is provided with the cover portion for covering the endless track zone means and the foot portion of the occupant, the maneuverability of the small snow running body is facilitated. There is.

According to the invention of claim 5, the cover has a tunnel-shaped cross section over its front-rear length, so that the snow scraped by the endless track means can pass through the tunnel. It is discharged and has the effect of reducing running resistance.

[0028]

[Brief description of drawings]

FIG. 1 is an external perspective view of a small snow running body according to an embodiment of the present invention.

FIG. 2 is a side view of a small snow running body.

FIG. 3 is an enlarged side view of the crawler belt means.

FIG. 4 is a bottom view of FIG. 2.

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a side view of the endless track zone means in the modification of the embodiment.

FIG. 7 is an external perspective view of a small snow running body in another modification of the above embodiment.

FIG. 8 is a schematic external perspective view of a conventional device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Small snow running body, 2 ... Frame main body, 3 ... Handle, 4 ... Front ski, 5 ... Rear ski, 7 ... Cover member, 7a ... Front top part, 7b ... Rear top part, 8 ... Engine (driving means), 9 ... Endless track means 10, substrate, 11 shaft member, 12 sprocket, 13, 14 driven sprockets, 15 endless track, 15a scraping plate, 18
Coil damper (elastic member), 20, 21 ... Driven sprockets, 22, 23, 24 ... Impeller,

Claims (5)

[Claims] 1. A small snow running body in which a front ski is provided with a handle member for steering, and a rear ski is provided with a frame body for rotatably supporting the handle member so as to run on snow. Drive means mounted on the main body, endless orbital zone means swingably supported by the frame main body via a shaft member and driven by the drive means, and between the endless orbital zone means and the frame main body A small snow running body, comprising: an elastic member which is provided to press the rear side of the track-shaped belt means so as to constantly rotate around the shaft member toward the snow surface. 2. The endless orbital zone means includes a base plate for supporting the shaft member, a drive sprocket and a plurality of driven sprockets provided on the base plate, and meshes with the base and slave both sprockets to form an outer peripheral end surface of the base plate. 2. The small snow traveling body according to claim 1, further comprising an endless track zone that moves along the axis, and the driving sprocket being provided coaxially with the shaft member. 3. A driven sprocket that first engages with the endless orbital zone that moves from the driving sprocket among the plurality of driven sprockets is provided between the substrate and the substrate.
3. A small snow traveling body according to claim 1, further comprising a tension means for constantly pressing the endless orbital zone to the snow surface side via the driven sprocket. 4. The small snow running according to any one of claims 1 to 3, wherein the rear ski is provided with a cover portion which covers the tracked track means and puts a foot portion of an occupant. body. 5. The small snow running body according to claim 4, wherein the cover has a tunnel-shaped cross section over the front-rear length thereof.