JP2007330584A - Vehicle for sliding down - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle for sliding down enhancing stability so as to be able to stably slide down even on a steep inclined plate. <P>SOLUTION: In the vehicle for sliding down, which includes a seat portion on which a user sits, a frame supporting the seat portion, a front wheel rotatably arranged in the front side of the frame, rear wheels rotatably arranged in the rear side of the frame, and an operating portion steering the front wheel, the angle relative to the ground in a fore and aft direction of the vehicle can be changed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a downhill vehicle that slides down a down slope.

  Snowboarding, bobsled, luge, etc. are well known as sports that can be enjoyed by gliding down the slope. These are originally sports on snow or ice in winter. To perform in a place without snow or ice, the body of these sports equipment directly touches the running surface and the user directly influences the influence of the running road surface condition. Because it is easy to receive and dangerous, it was not suitable as a sport in summer.

Therefore, conventionally, a downhill vehicle having wheels on a seat portion on which a user rides has been proposed so that a sport can be enjoyed by sliding on an inclined surface in summer as in winter. For example, a frame constituting the vehicle body, a tilting shaft provided along the front-rear direction of the frame, a seat portion that is assembled to the frame and that can be tilted in the left-right direction around the tilting shaft, and tilting the vehicle body A downhill vehicle has been proposed that includes a steering wheel that turns to the left or right according to an operation (see, for example, Patent Document 1).
JP2001-30917A

  However, although the conventional downhill vehicle described above improves the entertainment by changing the traveling direction by turning the steering wheel to the left and right by tilting the vehicle body to the left and right, it slides down the steep slope. In doing so, there has been a problem that the user's body is leaning forward or slipping forward, resulting in an unstable posture and danger.

  The present invention has been made in view of such circumstances, and provides a downhill vehicle with improved stability that enables stable downhill even on steep slopes.

  In order to solve the above-described conventional problems, the present invention according to claim 1 includes a seat portion on which a user is seated, a frame that supports the seat portion, a front wheel that is rotatably provided in front of the frame, A vehicle capable of adjusting the ground angle of a vehicle by adjusting the vehicle height at the front of the frame in a downhill vehicle having a rear wheel rotatably provided behind the frame and an operation unit for steering the front wheel. It is characterized by high adjustment means.

  The present invention according to claim 2 is characterized in that the vehicle height adjusting means is connected between the front wheel and the operation portion.

  According to a third aspect of the present invention, the vehicle height adjusting means includes a front axle that supports the front wheel, a base shaft that is coupled to the operation unit, a base shaft that is attached to both ends of the base shaft, and the front axle. And a plurality of arms having a guide member attached to the front axle so as to be able to advance and retreat, and a bendable joint member, and the base shaft can be rotated around the front axle. As described above, the front part of the frame can be adjusted up and down.

  In the first aspect of the present invention, a seat portion on which a user is seated, a frame that supports the seat portion, a front wheel that is rotatably provided in front of the frame, and a rear portion of the frame that is rotatably provided. In a downhill vehicle comprising a rear rear wheel and an operation unit for steering the front wheel, vehicle height adjustment means is provided that can adjust the vehicle ground angle by adjusting the vehicle height at the front of the frame. In this downhill vehicle, the posture when sliding down the slope can be brought as close as possible to the horizontal state by the vehicle height adjusting means, and the user's body can lean forward when sliding down the slope. It is possible to improve stability and safety by preventing pre-sliding.

  Further, in the present invention according to claim 2, since the vehicle height adjusting means is connected between the front wheel and the operation portion, the downhill vehicle is inclined by the vehicle height adjusting means. It is possible to make the downhill posture as close as possible to the horizontal state, and to prevent the user's body from sliding forward or sliding down the slope, Safety can be improved.

  Further, in the present invention according to claim 3, the vehicle height adjusting means includes a front axle that supports the front wheel, a base shaft that is coupled to the operation portion, and both the base shaft and the front axle that are attached to both ends of the base shaft. And a plurality of arms, each having a guide member attached to the front axle so as to be able to advance and retreat, and a bendable node member, and the base shaft is rotated around the front axle. Since the front part of the frame can be adjusted up and down, the front part of the frame can be moved up and down with a simple structure to change and adjust the ground angle in the longitudinal direction of the vehicle. The stability and safety of the vehicle at the time can be improved.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a downhill vehicle according to this embodiment, FIG. 2 is a side view of the downhill vehicle according to this embodiment, and FIG. 3 is a plan view of the downhill vehicle according to this embodiment.

  As shown in FIG. 1, the downhill vehicle A according to the present embodiment is provided so as to be freely rotatable in front of the seat 2, a frame 2 that supports the seat 1, and a frame 2 that supports the seat 1. The vehicle includes a front wheel 3, rear wheels 4 and 4 rotatably provided behind the frame 2, and an operation unit 5 for steering the front wheel 3. The front wheel 3 and the operation unit 5 are connected via a vehicle height adjusting means 6. Has been.

  As shown in FIG. 2, the downhill vehicle A includes an inclined cylinder 25 for providing the operation unit 5 at the front end portion of the frame 2 and a rear axle 8 at the rear end portion of the frame 2. Rear wheels 4 and 4 are provided at both ends. The frame 2 is fixed to the lower portion of the seat portion 1 formed in a boat shape, supports the seat portion 1 from below, and causes the inclined cylinder 25 to protrude to the upper portion of the seat portion 1. The projecting inclined cylinder 25 is provided with the operation portion 5, and a vehicle height adjusting means 6 is connected to the lower end of the operation portion 5 so that the front wheel 3 is supported by the vehicle height adjusting means 6.

  Here, the frame 2 which is the framework of the downhill vehicle A and the seat 1 fixed to the upper part of the frame 2 and seated by the user will be described in detail. The frame 2 and the seat 1 are collectively referred to as a vehicle main body 30.

  As shown in FIG. 3, the frame 2 has a center frame 21 that extends in the front-rear direction and is bent upward at the rear end so as to be positioned at a substantially central portion of the left and right widths of the vehicle, and a front lower rear It is composed of a hollow inclined cylinder 25 erected in a high inclined shape, a plurality of support frames 22 provided so as to be substantially perpendicular to the central frame 21, and a rear axle 8 provided with rear wheels 4 and 4. .

  The inclined cylinder 25 is for inserting the front bar 12 to be described later and supporting the operation unit 5. When the inclination angle is about 40 °, the operation unit 5 can be easily operated.

  The support frame 22 is a thin plate-like member that supports the seat portion 1 from the bottom surface, and has attachment holes (not shown) for connecting to the seat portion 1 at both ends thereof, and is attached to the center frame 21 and is attached to the center frame. 21 and projecting in a direction substantially perpendicular to 21.

  As shown in FIG. 1, in the present embodiment, two support frames 22 are provided on the running surface side of the central frame 21 and one on the back side. Any arrangement that can be supported is acceptable.

  The rear axle 8 is attached to the rear end portion of the center frame 21, and the left and right end portions thereof are rotatably connected to the rear wheel 4 that comes in contact with the running surface and the brake 31 that operates on the rear wheel 4 is attached. ing.

As shown in FIG. 1, the seat portion 1 is formed in a boat shape and has a mounting hole (not shown) corresponding to the mounting hole of the support frame 22. Thus, both the seat 1 and the frame 2 are integrally formed as a vehicle main body 30. A through hole (not shown) is provided in the vicinity of the front end of the seat portion 1, and the inclined cylinder 25 of the frame 2 is inserted into the through hole from below so that the inclined cylinder 25 protrudes above the seat portion 1. Yes.

Next, the operation unit 5 for steering the front wheels will be described.

  As shown in FIG. 3, the operation portion 5 is provided at a front bar 12 that is a rod-shaped member that is inserted into the inclined cylinder 25 and whose lower end is connected to the vehicle height adjusting means 6, and an upper end portion of the front bar 12. The handle 29 is formed in a substantially Y shape that is often seen on a bicycle handle, and the left and right grips are provided with brakes 31 that individually operate on the rear wheels 4 and 4 with springs or the like. Brake levers 32 that are operated through wires or the like are provided.

  The front bar 12 is inserted into the inclined cylinder 25 and its lower end is connected and fixed to the vehicle height adjusting means 6. When the handle 29 fixed to the upper end is turned to the left and right, the operation is changed to the vehicle height. The vehicle is transmitted to the front wheel 3 via the adjusting means 6 and the front wheel 3 is turned left and right to change the direction of the downhill vehicle A.

  The brake levers 32 and 32 provided on the left and right grip portions of the handle 29 respectively operate the brakes 31 and 31 provided on the left and right end portions of the rear axle 8 to the left and right rear wheels 4 and 4 respectively. Therefore, the vehicle can be turned by adjusting the strength of the left and right brake operations, thereby improving the entertainment of operating the vehicle.

  In addition, the operation unit 5 can be configured to be stretchable. In other words, the leg portion of the handle 29 can be inserted into the front bar 12 and slidably attached so that the distance between the handle 29 and the user can be adjusted. With such a configuration, it is possible to adjust the position of the handle 29 suitable for the user's physique such as adults and children, and to further improve the stability and operability during downhill.

  Next, the configuration of the vehicle height adjusting means 6 which is the most characteristic configuration in the present invention will be described in detail.

  As shown in FIGS. 2 and 3, the vehicle height adjusting means 6 is provided with arms 10 and 10 at both ends of the base shaft 9 connected to the operation unit, and the end of the arm 10 is supported before the front wheel 3 is supported. It is configured to be connected to both ends of the axle 7 respectively, and the vehicle height can be adjusted by rotating the base axle 9 around the front axle 7. Hereinafter, the base shaft 9, the arm 10, and the front axle 7 will be described in detail.

  The base shaft 9 is a rod-like member connected to the front bar 12 of the operation unit 5, receives a turning operation performed in the operation unit 5, transmits the front wheel 3 via the arm 10, and turns the front wheel 3 left and right. .

  The arm 10 includes two types of members, a guide member 11 that is attached to the front axle 7 so as to be able to advance and retreat, and a bendable joint member 13.

  The guide member 11 is configured by attaching a support plate 19 to one end of a rod member having a spiral groove cut on the peripheral surface of the rod-like member, and the support plate 19 and the end of the base shaft 9 are fastened with screws. The other end is inserted into the through hole of the front axle 7 and fastened and fixed with a nut 17. The guide member 11 can be moved forward and backward in the through hole of the front axle 7 and can be fastened and fixed by a nut 17 at an arbitrary position. Yes. The guide member 11 has a function of guiding the rotation of the base shaft 9 and the accompanying bending and stretching of the joint member 13 when the base shaft 9 is rotated about the front axle 7.

  The joint member 13 is composed of a pair of plate-like members that are flexibly connected via a connecting pin 18, one end of which is near the end of the base shaft 9 and closer to the front wheel side than the mounting position of the guide member 11. In addition to being fixed, the other end is connected to the front wheel 7 in the vicinity of the end of the front axle 7 so as to be pivotable to the front wheel side relative to the mounting position of the guide member 11. The joint member 13 is fastened and fixed by a pin 20 in the vicinity of the connecting pin 18 and the front axle 7.

  By configuring the arm 10 from these two types of members, the load applied from the vehicle main body 30 and the user on board can be distributed in two directions, and the strength of the arm 10 is improved.

  As shown in FIG. 3, the front axle 7 is a rod-like member that rotatably supports the front wheel 3 and protrudes from the side of the front wheel 3, and has through holes (not shown) through which guide members 11 are inserted at both ends thereof. And has a configuration capable of rotating around its own axis.

  FIGS. 4 to 6 show stepwise displacement operations of the base shaft 9, the arm 10, and the front axle 7 when the vehicle height is adjusted by the vehicle height adjusting means 6, using a plan view and a side view. FIG. 7 shows how the downhill vehicle A is used on a slope with an inclination angle of about 10 °, and shows the vehicle height displacement process corresponding to the state of the vehicle height adjusting means 6 in FIGS. Yes.

  FIG. 4 shows the vehicle height adjusting means 6 in a state where the vehicle height is not adjusted, that is, in a normal state of the vehicle, and FIG. 7 (a) is a usage pattern diagram corresponding to this.

  When the vehicle height adjusting means 6 is in the state shown in FIG. 4, the base shaft 9 is in the lowest position, and the guide member 11 is mounted and fixed with the length of the front axle 7 entering the through hole being large, and the joint member No. 13 is in a fixed state by bending the node portion downward. At this time, the vehicle main body 30 takes a posture in which the front end portion of the frame 2 is slightly tilted upward with respect to the traveling surface, and a relative position formed by the traveling surface and the frame 2 at this time is set as a reference position. As described above, since the front portion of the frame 2 is slightly tilted upward even during normal times, the user H can make a forward slip or a forward slip on an extremely gentle slope without operating the vehicle height adjusting means 6. So that it can be prevented from becoming a posture.

  When the vehicle height adjusting means 6 is in such a state, for example, when the downhill vehicle A is used on an inclined surface having an inclination angle of about 10 °, the vehicle body 30 has the front portion downward as shown in FIG. Glide down the slope with a tilted attitude. For this reason, it is difficult for the user's H body to slide forward or to take a forward leaning posture during a downhill and to take a stable posture. However, by operating the vehicle height adjusting means 6 and adjusting the vehicle height as will be described later, it is possible to improve stability and safety during downhill.

  FIG. 5 shows the vehicle height adjusting means 6 when the vehicle height adjusting means 6 raises the vehicle height at the front of the vehicle main body 30 and the vehicle main body 30 is tilted approximately 5 ° upward from the reference position shown in FIG. FIG. 7B is a usage pattern diagram corresponding to this.

  By operating the vehicle height adjusting means 6 from the state shown in FIG. 4 to the state shown in FIG. 5, the vehicle main body 30 is displaced from the reference position shown in FIG. 7A to the position shown in FIG. 7B. You can adjust the ground angle of the vehicle. In this operation, the base shaft 9 is rotated counterclockwise to change the position of the guide member 11 in the direction of retreating from the through-hole of the front axle 7, and the joint member 13 extends the node to move the pair of plate-like members. The guide member 11 and the joint member 13 are fastened and fixed in this state.

  When the vehicle height adjustment means 6 is used in such a state and the downhill vehicle A is used on an inclined surface having an inclination angle of about 10 °, the vehicle body 30 slightly moves the front portion as shown in FIG. Although the slope is slid down in a downward inclined posture, the posture can be made closer to the horizontal than the vehicle posture in FIG. Therefore, it is possible to improve the safety by preventing the user H from being in an unstable posture during downhill.

  FIG. 6 shows the vehicle height adjusting means 6 when the vehicle height adjusting means 6 further raises the vehicle height at the front portion of the vehicle body 30 from the position shown in FIG. FIG. 7C is a usage pattern diagram corresponding to this.

  By operating the vehicle height adjusting means 6 from the state shown in FIG. 5 to the state shown in FIG. 6, the vehicle body 30 is displaced from the position shown in FIG. 7 (b) to the position shown in FIG. 7 (c). Thus, the ground angle of the vehicle can be further adjusted. In this operation, the base shaft 9 is further rotated counterclockwise from the position shown in FIG. 5 to change the position of the guide member 11 in the direction of entering the through hole of the front axle 7, and the joint member 13 is shown in FIG. The node is bent in the direction opposite to the bending direction. In this state, the guide member 11 and the joint member 13 are fastened and fixed.

  When the vehicle height adjusting means 6 is in such a state and the downhill vehicle A is used on a slope having an inclination angle of about 10 °, the vehicle body 30 is in a substantially horizontal posture as shown in FIG. The slope is to be slid down, and the slope of the user H can be slid down with the posture of the user H stabilized, and the stability and safety at the time of slid down can be further improved.

  Here, in the vehicle height adjusting means 6, the base shaft 9 can operate between the position shown in FIG. 4 and the position shown in FIG. 6, so that the ground angle of the vehicle body 30 is set to approximately 0 ° to 10 ° from the reference position. Can be changed at any angle between.

  It should be noted that the vehicle height adjustment operation can be easily performed because the above-described operations of the guide member 11 and the joint member 13 are performed following the rotation of the base shaft 9. Therefore, the ground angle can be easily adjusted. In addition, since the front bar 12 and the base shaft 9 and the ends of the base shaft 9 and the joint member 13 are fixed, the rotation operation of the base shaft 9 can be easily performed by gripping and lifting the inclined cylinder 25. This prevents problems such as bending of the connecting portion in an unintended direction.

  Further, the vehicle height adjusting means 6 shown in FIG. 5 shows an intermediate state of the vehicle height adjusting means 6 shown in FIGS. 4 and 6 as an example, and the vehicle height adjusting means 6 is adjusted in three stages. Needless to say, it is not limited to.

The perspective view of the vehicle for downhill which concerns on this embodiment. The side view of the vehicle for downhill which concerns on this embodiment. The top view of the vehicle for downhill which concerns on this embodiment. Explanatory drawing of the vehicle height adjustment means which concerns on this embodiment. Explanatory drawing of the vehicle height adjustment means which concerns on this embodiment. Explanatory drawing of the vehicle height adjustment means which concerns on this embodiment. Explanatory drawing which shows the use condition of the vehicle for downhill which concerns on this embodiment.

Explanation of symbols

A Vehicle for sliding down 1 Seat part 2 Frame 3 Front wheel 4 Rear wheel 5 Operation part 6 Vehicle height adjusting means 7 Front axle 8 Rear axle 9 Base axle 10 Arm 11 Guide member 13 Joint member 30 Vehicle body

Claims (3)

A seat portion on which a user is seated, a frame that supports the seat portion, a front wheel that is rotatably provided in front of the frame, a rear wheel that is rotatably provided in the rear of the frame, and steering the front wheel A downhill vehicle comprising an operation unit,
A downhill vehicle comprising vehicle height adjusting means that adjusts the vehicle height at the front of the frame to adjust the ground angle of the vehicle.   The downhill vehicle according to claim 1, wherein the vehicle height adjusting means is connected between the front wheel and the operation portion. The vehicle height adjusting means includes a front axle that supports the front wheel, a base shaft that is connected to the operation unit, and a plurality of arms that are attached to both ends of the base shaft and connect the base shaft and the front axle.
The plurality of arms includes a guide member that is attached to the front axle so as to be able to advance and retreat, and a bendable joint member, and the base front portion is rotatable around the front axle, and the front portion of the frame can be adjusted up and down. The downhill vehicle according to claim 2, wherein the downhill vehicle is a downhill vehicle.

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