Snow sled
The snow sled design with rear and optional front fins, and grooves, addresses the resistance issue of existing sleds, enabling smoother turns and improved maneuverability through weight distribution control.
Patent Information
- Application Number
- JP2025066039
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2025-10-20
- Estimated Expiration
- 2045-04-14
AI Technical Summary
Existing snow sleds face difficulty in changing direction due to curving surfaces provided over the entire length, creating resistance and making direction changes challenging.
The snow sled design features rear fins located closer to the rear end, with a length less than half of the sled's maximum longitudinal dimension, and optionally includes front fins, right and left side rear fins, or grooves, allowing weight shifting for easier maneuverability.
Enables smoother turns and reduced resistance, enhancing the riding experience by allowing riders to control weight distribution effectively.
Smart Images
Figure 0007756466000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a snow sled, and more particularly to a snow sled that is easily turnable. [Background technology]
[0002] A snow sled is disclosed in Japanese Patent Publication No. 2004-534626 (see patent document). This is a vehicle (1) for traveling on snow or the like, and is provided with a straight running means (19) and one or more curved running means (21, 23, 25) that protrude in the direction of the flat running means. When such a vehicle is level, it moves in a straight line on a flat running surface. When such a vehicle is turned to one side, one of the curved running surfaces comes into contact with the snow and the vehicle performs a carving turn whose radius is determined by the radius of the running surface. By changing the turning angle of the vehicle, different turning radii can be selected. While embodiments for use on snow and ice are described, versions using wheels for use on hard surfaces are also disclosed (see patent document). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Special Publication 2004-534626 Summary of the Invention [Problem to be solved by the invention]
[0004] However, the above-mentioned vehicle has a problem in that the curving surfaces (21, 23, 25) are provided over substantially the entire length of the vehicle in the longitudinal direction, which creates a large resistance and makes it difficult to change direction.
[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a snow sled that addresses the above points. [Means for solving the problem]
[0006] The snow sled described in claim 1 is provided closer to the rear end than the front end of the snow sled. 1 bottle rear side of Phi N The snow sled is provided on the back side of the snow sled, which is the snow contact surface. The longitudinal direction of the rear fin passes through the center of the width of the snow sled. It is something.
[0007] In addition, the snow sled described in claim 2 is provided closer to the rear end than the front end of the snow sled. 1 bottle rear side of Phi N The snow sled is provided on the back side of the snow sled, which is the snow contact surface. 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 where the rear fin is provided is curved toward the front side of the snow sled. . is.
[0008] In addition, the snow sled described in claim 3 is provided closer to the rear end than the front end of the snow sled. 1 bottle rear side of Phi N The snow sled is provided on the back side of the snow sled, which is the snow contact surface. The rear fin passes through the center of the width of the snow sled, and the cross-sectional shape of the right edge of the snow sled, located to the right of the rear fin in a front view, perpendicular to the longitudinal direction, is a groove with an L-shaped cross section.The cross-sectional shape of the left edge of the snow sled, located to the left of the rear fin in a front view, perpendicular to the longitudinal direction, is a groove with an inverted L-shaped cross section.
[0009] In addition, the snow sled described in claim 4 is provided closer to the rear end than the front end of the snow sled. 1 bottle rear side of Phi N The snow sled is provided on the back side of the snow sled, which is the snow contact surface. One front fin is provided on the back side of the snow sled, which is the surface that contacts the snow, and passes through the center of the width of the snow sled and is closer to the front end than the rear end of the snow sled. The rear fin and the front fin are arranged in a straight line that passes through the center of the width of the snow sled. It is something.
[0010] In addition, the snow sled described in claim 5 has a structure in which the snow sled is provided closer to the rear end than the front end. At least two rear fins are provided on the back side of the snow sled, which is the surface that contacts the snow. One of the sleds is closer to the right side of the longitudinal center line of the snow sled. The fin on the right side is on the rear side of the snow sled, and the other fin is on the side closer to the left side than the center of the snow sled. A left rear fin is provided on each of the right and left rear fins, and an opening facing outward in rear view is provided between the right rear fin and the left rear fin. The snow sled described in claim 6 has at least two rear fins on the underside of the snow sled, which is the surface that contacts the snow, and which are closer to the rear end than the front end of the sled. One of the two fins is the right-side rear fin, which is closer to the right side of the longitudinal centerline of the center of the snow sled when viewed from behind, and the other is the left-side rear fin, which is closer to the left side than the center of the snow sled when viewed from behind. The front fin is closer to the front end than the rear end of the snow sled and is located on the underside of the snow sled, which is the surface that contacts the snow, and the front fin is located on an extension of the right-side rear fin and the left-side rear fin when viewed from behind. The front fin passes through the center of the width of the snow sled. do. The snow sled described in claim 7 has a rear fin located closer to the rear end than the front end of the sled, on the underside of the sled, which is the surface that comes into contact with snow. The rear fin passes through the center of the width of the sled and has a right groove running longitudinally along the right edge of the sled, located to the right of the rear fin when viewed from the front. The left groove runs longitudinally along the left edge of the sled, located to the left of the rear fin when viewed from the front. The snow sled described in claim 8 is the snow sled described in any one of claims 1 to 7, wherein the cross section of the fins perpendicular to the longitudinal direction tapers outward. The snow sled described in claim 9 is the snow sled described in any one of claims 1 to 7, wherein the length of the fins in the longitudinal direction is 1 / 2 or less of the maximum dimension of the snow sled in the longitudinal direction. [Brief explanation of the drawings]
[0016] [Figure 1] FIG. 1 is a schematic perspective view of a snow sled according to the present invention in use. [Figure 2] FIG. 2 is a schematic front view of FIG. [Figure 3] FIG. 3 is a schematic rear view of FIG. [Figure 4] FIG. 4 is a schematic right side view of FIG. [Figure 5] FIG. 5 is a schematic bottom view of FIG. [Figure 6] FIG. 6 is a schematic plan view of FIG. [Figure 7] FIG. 7 is a schematic cross-sectional view taken along line AA in FIG. [Figure 8] FIG. 8 is a schematic cross-sectional view taken along line BB in FIG. [Figure 9] FIG. 9 is a schematic cross-sectional view taken along line CC in FIG. [Figure 10] FIG. 10 is a schematic cross-sectional view taken along line DD in FIG. [Figure 11] FIG. 11 is a schematic front view of a snow sled according to another embodiment different from the snow sleds shown in FIGS. [Figure 12] FIG. 12 is a schematic cross-sectional view taken along line EE in FIG. [Figure 13] FIG. 13 is a schematic cross-sectional view taken along line FF in FIG. [Figure 14] FIG. 14 is a schematic cross-sectional view taken along line GG in FIG. [Figure 15] FIG. 15 is a schematic front view of a snow sled according to another embodiment different from the snow sleds shown in FIGS. [Figure 16] FIG. 16 is a schematic cross-sectional view taken along line HH in FIG. [Figure 17] FIG. 17 is a schematic cross-sectional view taken along line II in FIG. [Figure 18] FIG. 18 is a schematic front view of a snow sled according to another embodiment different from the snow sleds shown in FIGS. [Figure 19] FIG. 19 is a schematic rear view of FIG. [Figure 20] FIG. 20 is a schematic cross-sectional view taken along line JJ in FIG. [Figure 21] FIG. 21 is a schematic cross-sectional view taken along line KK in FIG. [Figure 22] FIG. 22 is a schematic cross-sectional view taken along line LL in FIG. [Figure 23] FIG. 23 is a schematic cross-sectional view taken along line MM in FIG. [Figure 24]FIG. 24 is a schematic rear view of a snow sled according to another embodiment different from the snow sleds shown in FIGS. [Figure 25] FIG. 25 is a schematic cross-sectional view taken along line MM in FIG. [Figure 26] FIG. 26 is a schematic cross-sectional view taken along line NN in FIG. DETAILED DESCRIPTION OF THE INVENTION
[0017] A snow sled according to one embodiment of the present invention will be described with reference to FIGS.
[0018] Example 1 (Figs. 1 to 10) S shown in Figure 1 is a snow sled, and the snow sled S has, for example, a length of approximately 125 cm, a width of approximately 27.5 cm, and a thickness of approximately 15 mm. 1 is the front side of the snow sled S, and 2 is the back side of the snow sled S. The snow sled S may be made of wood, for example, and the rear fin (protrusion) 3 (see Figure 3), front fin (protrusion) 4 (see Figures 15 and 24), right side rear fin (protrusion) 5 (see Figure 19), and left side rear fin (protrusion) 6 (see Figure 19) described later on the surface of the top side 1 and the bottom side 2 of the snow sled S may be formed of glass fiber reinforced plastic (FRP), or the snow sled S including the rear fin (protrusion) 3 (see Figure 3), front fin (protrusion) 4 (see Figures 15 and 24), right side rear fin (protrusion) 5 (see Figure 19), and left side rear fin (protrusion) 6 (see Figure 19) described later may be formed of glass fiber reinforced plastic (FRP). Although not shown, it is advisable to use roping to strengthen the bases of the rear fin (protrusion) 3 (see Figure 3), front fin (protrusion) 4 (see Figures 15 and 24), right side rear fin (protrusion) 5 (see Figure 19), and left side rear fin (protrusion) 6 (see Figure 19). Also, D shown in Figures 1 and 2 is a deck pad, which is used to prevent feet from slipping on the deck (the surface on which the feet rest). E is a leash cord, which is a cord that connects the snow sled S to the rider of the snow sled S.
[0019] The rear fin (protrusion) 3 shown in Figure 3 is located closer to the rear end Z of the snow sled S than the front end A, and is provided on the back side 2 of the snow sled S, which is the surface that comes into contact with snow.The rear fin (protrusion) 3 has a length (e.g., approximately 35 cm) that is less than 1 / 2 or 1 / 3 of the maximum dimension X1 (e.g., approximately 125 cm) in the longitudinal direction X of the snow sled S.
[0020] The heights (e.g., about 3 mm to about 15 mm) of the front edge 31 and the rear edge 32 of the rear fin (protrusion) 3 from the rear surface of the snow sled S in the longitudinal direction X of the snow sled S are configured to be lower than the center portion 33 of the rear fin (protrusion) 3 in the longitudinal direction X of the snow sled S. This allows the snow sled S to smoothly enter and exit the snow (getting in and out of the snow) (reducing resistance), allowing for a more enjoyable snow sled S. The shape and height of the protrusions are also the same for the front fin (protrusion) 4 (see FIGS. 15 and 24), right-side rear fin (protrusion) 5 (see FIG. 19), and left-side rear fin (protrusion) 6 (see FIG. 19), which will be described later. Also, as shown in FIG. 4, the maximum height H (e.g., about 3 mm to about 15 mm) of the rear fin (protrusion) 3 from the back surface of the snow sled S is the same as or smaller than the maximum thickness (e.g., about 15 mm) of the snow sled S. Therefore, the load applied to the rear fins (protrusions) 3 can be reduced, preventing damage to the rear fins (protrusions) 3 and preventing sudden changes in direction.
[0021] Therefore, according to the snow sled S described above, the rear fins (protrusions) 3 are located closer to the rear end Z than the front end A of the snow sled S and are provided on the back side 2 of the snow sled 3, which is the surface that comes into contact with the snow. The length of the rear fins (protrusions) is less than 1 / 2 or 1 / 3 of the maximum longitudinal dimension X1 of the snow sled S. Therefore, compared to a sled in which the fins (protrusions) 3 are provided along substantially the entire length of the snow sled 3 in the longitudinal direction X, the rider can shift his or her weight to control the amount of weight applied to the sled, allowing the rider to make turns and enjoy riding the snow sled S.
[0022] Example 2 (Figs. 11 to 14) The back side 2 of the snow sled S of the first embodiment (FIGS. 1 to 10) is cut on both sides in the longitudinal direction X of the snow sled S, with M1 being the right groove and M2 being the left groove. Except for the right groove M1 and the left groove M2, the structure is the same as that of the first embodiment (FIGS. 1 to 10) described above, and therefore the same parts are denoted by the same reference numerals and description thereof will be omitted. By providing the right groove portion M1 and the left groove portion M2, the speed of the snow sled S can be reduced or the snow sled S can be stopped while traveling.
[0023] Example 3 (Figs. 15 to 17) A front fin (projection) 4 is provided on the front side of the back surface 2 of the snow sled S of the first embodiment (FIGS. 1 to 10) described above.
[0024] That is, the front fin (protrusion) 4 is provided closer to the front end A than the rear end Z of the snow sled S, on the back side of the snow sled S, which is the snow contact surface, and the length of the front fin (protrusion) 4 is less than 1 / 2 or 1 / 3 of the maximum dimension X1 in the longitudinal direction X of the snow sled S.
[0025] According to the snow sled S described above, in addition to the effects of the invention described in the above-mentioned Example 1 or Example 2, the rider can use either the rear fin (protrusion) 3 or the front fin (protrusion) 4, or either the rear fin (protrusion) 3, the right side rear fin (protrusion) 5, or the left side rear fin (protrusion) 6 described later, to shift the rider's weight to make turns and other movements depending on the situation, thereby enjoying the snow sled S.
[0026] Example 4 (Figs. 18 to 23) Instead of the rear fin (protrusion) 3 provided in the center of the back side 2 of the snow sled S of the above-mentioned Example 1 (Figures 1 to 10), a right side rear fin (protrusion) 5 and a left side rear fin (protrusion) 6 are provided.
[0027] That is, at least two rear fins (protrusions) are provided on the underside 2 of the snow sled A, which is the surface that contacts the snow, closer to the rear end Z than to the front end A of the snow sled S. Of the two, one is a right-side rear fin (protrusion) 5 located closer to the right side of the longitudinal centerline of the center of the snow sled S, and the other is a left-side rear fin (protrusion) 6 located closer to the left side of the center of the snow sled S. The lengths of the right-side rear fin (protrusion) 5 and the left-side rear fin (protrusion) 6 are less than 1 / 2 or 1 / 3 of the maximum dimension X1 in the longitudinal direction X of the snow sled S, and the longitudinal lengths of the right-side rear fin (protrusion) 5 and the left-side rear fin (protrusion) 6 are, for example, approximately 25 cm.
[0028] According to the snow sled S described above, at least two rear fins (protrusions) are provided on the underside of the snow sled S, which is the surface that comes into contact with snow, closer to the rear end Z than the front end A of the snow sled S. Of the two, one is a right-side rear fin (protrusion) 5 located closer to the right side of the center line in the longitudinal direction of the center of the snow sled S, and the other is a left-side rear fin (protrusion) 6 located closer to the left side of the center of the snow sled S. Therefore, compared to a snow sled with fins (protrusions) provided along approximately the entire length of the longitudinal direction, the rider can shift his or her weight to use the right-side rear fin (protrusion) 5 or the left-side rear fin (protrusion) 6 to make turns, etc., depending on how much weight the rider is putting on the snow sled S, allowing for more enjoyment of the snow sled S.
[0029] Example 5 (Figs. 24 to 26) This sled has a front fin (projection) 4 on the front side of the back surface 2 of the snow sled S of the fourth embodiment (FIGS. 18 to 23) described above.
[0030] That is, the front fin (protrusion) 4 is provided closer to the front end A than the rear end Z of the snow sled S, on the back side of the snow sled S, which is the snow contact surface, and the length of the front fin (protrusion) 4 is less than 1 / 2 or 1 / 3 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 the above-mentioned embodiment 1 or embodiment 2, the rider can enjoy turning by shifting his / her weight by manipulating the weight distribution on the rear sides of the feet, and in some cases by positioning the front fins (projections) 4 behind the rider (when the front fins (projections) 4 are positioned behind the rider, the rear fins (projections) 3 will be positioned in front of the rider), thereby manipulating the weight distribution on the rear sides of the rider's feet. [Explanation of symbols]
[0032] S: Snow sled A: Tip D: Deck pad E: Lee shoe coat Z: rear end X: Longitudinal direction of snow sled X1: Maximum longitudinal dimension of snow sled M1: Right groove M2: Left groove 1: Surface side 2: Back side 3: Rear fin (protrusion) 4: Front fin (protrusion) 5: Right side rear fin (protrusion) 6: Left side rear fin (protrusion)
Claims
1. A rear fin is provided on the rear side 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. A snow sled characterized by:
2. A rear fin is provided on the rear side of the snow sled, which is the snow contact surface, closer to the rear end than the front end, and the rear fin passes through the center of the width of the snow sled. The rear side of the snow sled where the rear fin is provided is curved toward the front side of the snow sled. A snow sled characterized by:
3. A rear fin is provided on the rear side of the snow sled, which is the snow contact surface, closer to the rear end than the front end, and the rear fin passes through the center of the width of the snow sled. a cross section of a right edge portion of the snow sled, which is located to the right of the rear fin, perpendicular to the longitudinal direction of the snow sled, has an L-shaped groove shape in a front view; When viewed from the front, the left edge of the snow sled, located to the left of the rear fin, has a cross section perpendicular to the longitudinal direction that has an inverted L-shaped groove shape. A snow sled characterized by:
4. A rear fin is provided on the rear side of the snow sled, which is closer to the rear end than the front end, and is provided on the back side of the snow sled, which is the surface that contacts the snow, and passes through the center of the width of the snow sled. A front fin is provided closer to the front end than the rear end of the snow sled, and is provided on the back side of the snow sled, which is the snow contact surface, and passes through the center of the width of the snow sled. The rear fin and the front fin are arranged in a straight line. A snow sled characterized by:
5. At least two rear fins are provided on the underside of the snow sled, which is the surface that contacts the snow, closer to the rear end than the front end of the snow sled. One of the two rear fins is a right-side rear fin that is closer to the right side of the center line in the longitudinal direction of the center of the snow sled, and the other is a left-side rear fin that is closer to the left side than the center of the snow sled. An opening facing outward in rear view is provided between the right-side rear fin and the left-side rear fin. A snow sled characterized by:
6. At least two rear fins are provided on the back side of the snow sled, which is the surface that contacts the snow, closer to the rear end than the front end of the snow sled. Of the two, one is a right-side rear fin that is closer to the right side of the center line in the longitudinal direction of the center of the snow sled when viewed from the back, and the other is a left-side rear fin that is closer to the left side of the center of the snow sled when viewed from the back. The front fin is provided closer to the front end than the rear end of the snow sled, and is provided on the back side of the snow sled, which is the surface that contacts snow. When viewed from behind, the front fin is located within an extension line of the rear right fin and the rear left fin, and the front fin passes through the center of the width of the snow sled. A snow sled characterized by:
7. A rear fin is provided on the back side of the snow sled, which is the snow contact surface, closer to the rear end than the front end of the snow sled, and the rear fin passes through the center of the width of the snow sled, a right groove portion in the longitudinal direction of the right edge portion of the snow sled, the right side of the rear fin when viewed from the front; A left groove is provided in the longitudinal direction of the left edge of the snow sled, located to the left of the rear fin when viewed from the front. A snow sled characterized by:
8. The cross-sectional shape perpendicular to the longitudinal direction of the fin is tapered outward.
8. The snow sled according to claim 1, wherein the sled is made of a material that is not resistant to snow.
9. The longitudinal length of the fin is less than or equal to half the maximum longitudinal dimension of the snow sled.
8. The snow sled according to claim 1, wherein the sled is made of a material that is not resistant to snow.
Citation Information
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