On-snow sled

Abstract

[Problem] To provide an on-snow sled, the orientation of which can be easily changed. [Solution] In this on-snow sled S, a rear side fin (projection) 3 provided on a side nearer to a rear end Z than a tip A of the on-snow sled S is provided on a rear surface side 2 of the on-snow sled 3, which is a snow abutting surface, and the rear side fin (projection) is 1 / 2 or shorter or 1 / 3 or shorter of the maximum dimension in the longitudinal direction of the on-snow sled.

Description

Sled for snow

[0001] The present invention relates to a sled for snow, and more particularly, to a sled for snow that can easily change direction.

[0002] As a sled for snow, there is one described in Japanese Translated Patent Publication No. 2004-534626 (refer to patent documents). This is a vehicle (1) for moving on snow or the like, which is provided with a straight sliding means (19), and one or more curved sliding means (21, 23, 25) protruding in the direction of the flat sliding means.

[0003] When such a vehicle is horizontal, it moves in a straight line on the flat sliding means. When the vehicle is rotated to one side, one of the curved sliding means comes into contact with snow, and the vehicle performs a carving turn whose radius is determined by the radius of the sliding portion. By changing the rotation angle of the vehicle, different turning radii can be selected. Embodiments for use on snow and ice are described, and versions using wheels for use on hard surfaces are also disclosed (refer to patent documents).

[0004] Japanese Translated Patent Publication No. 2004-534626

[0005] However, the above vehicle has a problem that since the carving surfaces (21, 23, 25) are provided over substantially the entire length in the longitudinal direction of the vehicle, the resistance is large and the direction cannot be changed easily.

[0006] An object of the present invention is to provide a sled for snow made in view of the above points.

[0007] The sled for snow according to claim 1 is provided with one rear fin, which is disposed closer to the rear end than to the front end of the sled for snow, on the back side of the sled for snow that is a snow contact surface, and the longitudinal direction of the rear fin passes through the center of the width of the sled for snow.

[0008] Furthermore, the snow sled described in claim 2 has a single rear fin provided on the back side of the snow sled, which is the snow contact surface, and the rear fin passes through the center of the width of the snow sled, and the portion of the back side of the snow sled on which the rear fin is provided is curved toward the front side of the snow sled.

[0009] Furthermore, the snow sled according to claim 3 has a rear fin provided on the back surface of the snow sled, which is the snow contact surface, and the rear fin has a cross-sectional shape perpendicular to the longitudinal direction of the right edge of the snow sled, which is located to the right of the rear fin when viewed from the front, and an inverted L-shaped groove when viewed from the front, which is located to the left of the rear fin when viewed from the front.

[0010] Furthermore, the snow sled described in claim 4 has a rear fin located closer to the rear end than the front end of the snow sled, which is the snow contact surface on the back side of the snow sled, passing through the center of the width of the snow sled, and a front fin located closer to the front end than the rear end of the snow sled, which is the snow contact surface on the back side of the snow sled, passing through the center of the width of the snow sled, with the rear fin and the front fin arranged in a straight line.

[0011] Furthermore, the snow sled described in claim 5 has at least two rear fins provided on the back surface of the snow sled, which is the snow contact surface, with one of the two fins being the right rear fin, located closer to the right side of the longitudinal center line of the center of the snow sled, and the other being the left rear fin, located closer to the left side of the center of the snow sled. An opening is provided between the right rear fin and the left rear fin, facing outward when viewed from the rear.

[0012] Furthermore, the snow sled according to claim 6 has at least two rear fins provided on the back surface of the snow sled, which is the snow contact surface, with one of the two fins positioned on the side closer to the rear end than the front end of the snow sled, closer to the right side than the longitudinal center line of the center of the snow sled when viewed from the rear, and the other fin positioned on the side closer to the left side than the center of the snow sled when viewed from the rear, and a front fin provided on the back surface of the snow sled, which is the snow contact surface, with the front fin positioned on the extension line of the right rear fin and the left rear fin when viewed from the rear, and the front fin passing through the center of the width of the snow sled.

[0013] Furthermore, the snow sled described in claim 7 has a rear fin provided on the back surface of the snow sled, which is the snow contact surface, and the rear fin has a right groove portion in the longitudinal direction of the right edge of the snow sled, which is located to the right of the rear fin when viewed from the front, and a left groove portion in the longitudinal direction of the left edge of the snow sled, which is located to the left of the rear fin when viewed from the front.

[0014] Furthermore, the snow sled according to claim 8 is the snow sled according to any one of claims 1 to 7, wherein the cross-sectional shape perpendicular to the longitudinal direction of the fin tapers outward.

[0015] Furthermore, the snow sled according to claim 9 is a snow sled according to any one of claims 1 to 7, wherein the length of the fin in the longitudinal direction is 1 / 2 or less of the maximum length of the snow sled in the longitudinal direction.

[0016] Figure 1 is a schematic perspective view of the snow sled of the present invention in use. Figure 2 is a schematic front view of Figure 1. Figure 3 is a schematic rear view of Figure 2. Figure 4 is a schematic right side view of Figure 2. Figure 5 is a schematic bottom view of Figure 2. Figure 6 is a schematic top view of Figure 2. Figure 7 is a schematic cross-sectional view taken along line A-A in Figure 3. Figure 8 is a schematic cross-sectional view taken along line B-B in Figure 3. Figure 9 is a schematic cross-sectional view taken along line C-C in Figure 3. Figure 10 is a schematic cross-sectional view taken along line D-D in Figure 3. Figure 11 is a schematic front view of a snow sled of another embodiment different from the snow sleds described in Figures 1 to 10. Figure 12 is a schematic cross-sectional view taken along line E-E in Figure 11. Figure 13 is a schematic cross-sectional view taken along line F-F in Figure 11. Figure 14 is a schematic cross-sectional view taken along line G-G in Figure 11. Figure 15 is a schematic front view of a snow sled of a different embodiment from the snow sleds described in Figures 11 to 14. Figure 16 is a schematic cross-sectional view of Figure 15 along the line H-H. Figure 17 is a schematic cross-sectional view of Figure 15 along the line I-I. Figure 18 is a schematic front view of a snow sled of a different embodiment from the snow sleds described in Figures 15 to 17. Figure 19 is a schematic rear view of Figure 18. Figure 20 is a schematic cross-sectional view of Figure 18 along the line J-J. Figure 21 is a schematic cross-sectional view of Figure 18 along the line K-K. Figure 22 is a schematic cross-sectional view of Figure 18 along the line L-L. Figure 23 is a schematic cross-sectional view of Figure 18 along the line M-M. Figure 24 is a schematic rear view of a snow sled of a different embodiment from the snow sleds described in Figures 18 to 23. Figure 25 is a schematic cross-sectional view of Figure 24 along the line M-M. Figure 26 is a schematic cross-sectional view taken along the N-N line in Figure 24.

[0017] An embodiment of the present invention, a snow sled, will be described with reference to Figures 1 to 26.

[0018] Example 1 (Figures 1 to 10) In Figure 1, S is a snow sled, and the snow sled S is, for example, about 125 cm in length, about 27.5 cm in width, and about 15 mm in thickness, with 1 being the front side of the snow sled S and 2 being the back side of the snow sled S. The snow sled S may, for example, be made of wood, and the rear fin (projection) 3 (see Figure 3), front fin (projection) 4 (see Figures 15 and 24), right rear fin (projection) 5 (see Figure 19), and left rear fin (projection) 6 (see Figure 19) on the surface of the front side 1 and the back side 2 of the snow sled S may be formed of fiberglass reinforced plastic (FRP). Alternatively, the snow sled S, including the rear fin (projection) 3 (see Figure 3), front fin (projection) 4 (see Figures 15 and 24), right rear fin (projection) 5 (see Figure 19), and left rear fin (projection) 6 (see Figure 19), may be formed of fiberglass reinforced plastic (FRP). Although not shown in the diagram, it is recommended to reinforce the bases of the rear fin (projection) 3 (see Figure 3), front fin (projection) 4 (see Figures 15 and 24), right rear fin (projection) 5 (see Figure 19), and left rear fin (projection) 6 (see Figure 19) with ropes. Also, D shown in Figures 1 and 2 is a deck pad, which is used to prevent the feet from slipping on the deck (the surface where the feet are placed). E is a leash cord, which connects the snow sled S to the rider of the snow sled S.

[0019] As shown in Figure 3, 3 is a rear fin (projection). The rear fin (projection) 3 is located closer to the rear end Z than to the front end A of the snow sled S and is provided on the back side 2 of the snow sled S, which is the snow contact surface. The length of the rear fin (projection) 3 is 1 / 2 or 1 / 3 of the maximum length X1 (for example, 125 cm) of the longitudinal direction X of the snow sled S (for example, 35 cm).

[0020] Furthermore, the height of the front edge 31 and rear edge 32 of the rear fin (projection) 3 in the longitudinal direction X of the snow sled S from the underside of the snow sled S (for example, approximately 3 mm to approximately 15 mm) is set lower than the central part 33 of the rear fin (projection) 3 in the longitudinal direction X of the snow sled S. As a result, the snow sled S can enter and exit the snow smoothly (with less resistance), allowing users to enjoy snow sledding. The shape and height of the projections are the same for the front fin (projection) 4 (see Figures 15 and 24), the right side rear fin (projection) 5 (see Figure 19), and the left side rear fin (projection) 6 (see Figure 19), which will be described later. Furthermore, as shown in Figure 4, the maximum height H of the rear fin (projection) 3 from the underside of the snow sled S (for example, approximately 3 mm to approximately 15 mm) is set to be the same as or less than the maximum thickness of the snow sled S (for example, approximately 15 mm). Therefore, the load on the rear fin (projection) 3 is reduced, preventing damage to the rear fin (projection) 3 and preventing sudden changes in direction.

[0021] Therefore, with the snow sled S described above, the rear fin (projection) 3, which is located closer to the rear end Z than the front end A of the snow sled S, is provided on the back side 2 of the snow sled 3, which is the snow contact surface. Since the length of the rear fin (projection) is 1 / 2 or 1 / 3 or less of the maximum length X1 of the snow sled S in the longitudinal direction, compared to a snow sled 3 with the fin (projection) 3 provided along approximately the entire length X of the snow sled S, the rider can make turns and perform other maneuvers by shifting their weight, allowing them to enjoy the snow sled S.

[0022] Example 2 (Figures 11-14) This is the snow sled S of Example 1 (Figures 1-10) described above, with both sides of the back surface 2 in the longitudinal direction X of the snow sled S being machined, where M1 is the right groove and M2 is the left groove. Except for the right groove M1 and the left groove M2, it is the same as Example 1 (Figures 1-10) described above, so the same parts are given the same reference numerals and their description is omitted. By providing the right groove M1 and the left groove M2, the speed of the snow sled S while it is running can be reduced or the running of the snow sled S can be stopped.

[0023] Example 3 (Figures 15-17) This is an example in which a front fin (projection) 4 is provided on the front side of the underside 2 of the snow sled S of Example 1 (Figures 1-10) described above.

[0024] In other words, the front fin (projection) 4, which is located closer to the front A than the rear Z of the snow sled S, is provided on the back side of the snow sled S, which is the snow contact surface, and the length of the front fin (projection) 4 is 1 / 2 or 1 / 3 or less of the maximum dimension X1 in the longitudinal direction X of the snow sled S.

[0025] With the snow sled S described above, in addition to the effects of the invention described in Example 1 or Example 2 above, the rider can use either the rear fin (projection) 3 or the front fin (projection) 4, or either the rear fin (projection) 3, the right side rear fin (projection) 5 (described later), or the left side rear fin (projection) 6, to make turns and perform other maneuvers by shifting their weight as needed, and thus enjoy the snow sled S.

[0026] Example 4 (Figures 18 to 23) In this example, the rear fin (projection) 3 located in the center of the underside 2 of the snow sled S of Example 1 (Figures 1 to 10) described above is replaced with a right-side rear fin (projection) 5 and a left-side rear fin (projection) 6.

[0027] Specifically, at least two rear fins (projections) are provided on the back surface 2 of the snow sled A, which is the snow contact surface, on the side closer to the rear end Z than to the front end A of the snow sled S. Of these two, one is a right-side rear fin (projection) 5 located closer to the right side of the longitudinal center line of the snow sled S, and the other is a left-side rear fin (projection) 6 located closer to the left side of the center of the snow sled S. The length of the right-side rear fin (projection) 5 and the left-side rear fin (projection) 6 is 1 / 2 or 1 / 3 or less of the maximum dimension X1 in the longitudinal direction X of the snow sled S, and the longitudinal length of the right-side rear fin (projection) 5 and the left-side rear fin (projection) 6 is, for example, about 25 cm.

[0028] As described above, the snow sled S has at least two rear fins (projections) on the underside of the snow-contacting surface, which is closer to the rear end Z than to the front end A of the snow sled S. One of the two fins is a right-side rear fin (projection) 5 located closer to the right side of the longitudinal center line of the snow sled S, and the other is a left-side rear fin (projection) 6 located closer to the left side of the center of the snow sled S. Compared to a snow sled with fins (projections) along approximately the entire longitudinal length of the snow sled, the rider can use the right-side rear fin (projection) 5 or the left-side rear fin (projection) 6 to shift their weight and make turns, etc., by manipulating how the rider's weight is applied, allowing the rider to enjoy the snow sled S.

[0029] Example 5 (Figures 24-26) This is an example in which a front fin (projection) 4 is provided on the front side of the underside 2 of the snow sled S of Example 4 (Figures 18-23) described above.

[0030] In other words, the front fin (projection) 4, which is located closer to the front A than the rear Z of the snow sled S, is provided on the back side of the snow sled S, which is the snow contact surface, and the length of the front fin (projection) 4 is 1 / 2 or 1 / 3 or less of the maximum dimension X1 in the longitudinal direction X of the snow sled S.

[0031] With the snow sled S described above, in addition to the effects of the invention described in Example 1 or Example 2, in addition to the way the weight is applied to the back of the feet, the front fin (projection) 4 can be positioned behind the rider (when the front fin (projection) 4 is positioned behind the rider, the rear fin (projection) 3 will be positioned in front of the rider), and by manipulating the way the weight is applied to the back of the feet, the rider can make turns and enjoy the snow sled S by shifting their weight.

[0032] S: Snow sled A: Front D: Deck pad E: Leash coat Z: Rear end X: Longitudinal direction of snow sled X1: Maximum length of snow sled M1: Right side groove M2: Left side groove 1: Front side 2: Back side 3: Rear fin (projection) 4: Front fin (projection) 5: Right side rear fin (projection) 6: Left side rear fin (projection)

Claims

1. A snow sled characterized in that a single rear fin, located closer to the rear end than the front end of the snow sled, is provided on the back surface of the snow sled, which is the snow contact surface, and the longitudinal direction of the rear fin passes through the center of the width of the snow sled.

2. A snow sled characterized in that a single rear fin is provided on the back surface of the snow sled, which is the snow contact surface, and the rear fin passes through the center of the width of the snow sled, and the portion of the back surface of the snow sled on which the rear fin is provided is curved toward the front surface of the snow sled.

3. A snow sled characterized in that a single rear fin is provided on the back surface of the snow sled, which is the snow contact surface, and the rear fin passes through the center of the width of the snow sled, and in a front view, the cross-sectional shape perpendicular to the longitudinal direction of the right edge of the snow sled located to the right of the rear fin is an L-shaped groove, and in a front view, the cross-sectional shape perpendicular to the longitudinal direction of the left edge of the snow sled located to the left of the rear fin is an inverted L-shaped groove.

4. A snow sled characterized in that one rear fin, located closer to the rear end than the front end of the snow sled, is provided on the underside of the snow sled, which is the snow contact surface, passing through the center of the width of the snow sled, and one front fin, located closer to the front end than the rear end of the snow sled, is provided on the underside of the snow sled, which is the snow contact surface, passing through the center of the width of the snow sled, and the rear fin and the front fin are arranged in a straight line.

5. A snow sled characterized by having at least two rear fins provided on the underside of the snow sled, which is the snow contact surface, with one of the two fins positioned closer to the right side of the longitudinal center line of the snow sled, and the other fin positioned closer to the left side of the center of the snow sled, and having an opening between the right rear fin and the left rear fin that faces outward when viewed from the rear.

6. A snow sled characterized in that, at least two rear fins are provided on the underside of the snow sled, which is the snow contact surface, with one of the two fins positioned closer to the rear end than the front end of the snow sled, and when viewed from the rear, one fin is positioned closer to the right side than the longitudinal center line of the center of the snow sled, and the other fin is positioned closer to the left side than the center of the snow sled, and a front fin is provided on the underside of the snow sled, which is the snow contact surface, with the front fin positioned within the extension lines of the right rear fin and the left rear fin when viewed from the rear, and the front fin passes through the center of the width of the snow sled.

7. A snow sled characterized in that a single rear fin is provided on the back surface of the snow sled, which is the snow contact surface, and the rear fin passes through the center of the width of the snow sled, and a right groove is provided in the longitudinal direction of the right edge of the snow sled, which is to the right of the rear fin when viewed from the front, and a left groove is provided in the longitudinal direction of the left edge of the snow sled, which is to the left of the rear fin when viewed from the front.

8. A snow sled according to any one of claims 1 to 7, characterized in that the cross-sectional shape perpendicular to the longitudinal direction of the fin tapers outward.

9. A snow sled according to any one of claims 1 to 7, characterized in that the length of the fin in the longitudinal direction is 1 / 2 or less of the maximum length of the snow sled in the longitudinal direction.

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