JP2016067595A - skateboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skateboard capable of preventing damage to a ground surface.SOLUTION: A skateboard 1 comprises a twist pipe 40 for connecting a front board 10 and a rear board 20. Inclination type eccentric casters 13, 23 are attached to the bottom surfaces of the front and rear boards 10, 20. The inclination type eccentric casters 13, 23 are provided with rollers 26, 36 having rotary shafts. The rotary shafts of the rollers 26, 36 are configured to be rotatable around rotary shafts 5. The rotary shafts 5 are inclined obliquely forward with respect to a vertical axis in a side view. The twist pipe 40 is provided with a plate spring 55 which is twisted when receiving a torsional force from each of the front and rear boards 10, 20, and is restored to an original state when the torsional force is released. Cushioning members 60 are provided at the edges of each of the front and rear boards 10, 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a skateboard in which wheels are provided on the bottom surface of a plate-like member.

  Conventionally, a skateboard is formed by attaching wheels to the front and rear of the bottom surface of a plate-like member. As such a skateboard, for example, a skateboard described in Patent Document 1 below is a board in which a front board and a rear board each having casters attached thereto are connected by a twisted pipe. In this skateboard, the user twists his body and moves his / her weight to twist the torsion pipe, and the front board and the rear board meander and slide while tilting with respect to the ground.

Japanese Patent No. 4411200

  However, as described above, in the skateboard described in Patent Document 1, the twisted pipe is twisted, and the front board and the rear board meander and slide while tilting with respect to the ground. May come into contact. In this way, since sliding causes damage to the ground, sliding in indoor facilities may be avoided.

  The present invention has been proposed in view of the above circumstances. That is, an object is to provide a skateboard that can prevent damage to the ground.

  In the present invention, the “rotation axis” is an axis that intersects the ground, and “rotation” refers to rotation about the rotation axis.

  In order to achieve the above object, a skateboard according to the present invention includes a connecting member that connects a front board and a rear board, and casters are attached to the bottom surface of the front board and the bottom surface of the rear board. The caster is provided with a roller having a rotation axis, and each of the rotation axes of the roller is configured to rotate around a rotation axis, and each of the rotation axes is a vertical axis in a side view. The connecting member is provided with an elastic member that is inclined obliquely forward, twisted when receiving a torsional force from the front and rear boards, and restored to its original state when the torsional force is released, A buffer member is provided on an edge of the front board and / or the rear board.

  The skateboard according to the present invention has the above-described configuration. With this configuration, when sliding, if the front and rear boards are tilted with respect to the ground due to twisting of the elastic member, the board is in direct contact with the ground by the buffer member provided at the edge of the board contacting the ground. Is prevented. Therefore, damage to the ground can be prevented.

It is a bottom perspective view of a skateboard according to an embodiment of the present invention. It is a side view of the caster of the skateboard which concerns on embodiment of this invention. It is a section construction figure of the connecting member of the skateboard concerning the embodiment of the present invention. It is an external appearance perspective view of the connection member of the skateboard which concerns on embodiment of this invention. It is explanatory drawing by which the motion at the time of sliding the skateboard which concerns on embodiment of this invention was shown.

  Below, the skateboard which concerns on embodiment of this invention is demonstrated based on drawing. FIG. 1 shows a skateboard 1 according to an embodiment of the present invention as seen from the bottom side.

  As shown in FIG. 1, the skateboard 1 according to this embodiment is a connecting member in which a front board 10, a rear board 20, and front and rear boards 10, 20 are connected in a separated state. And a twisted pipe 40. Further, the front and rear boards 10 and 20 are attached to the plates 11 and 21, the inclined eccentric casters 13 and 23 attached to the bottom surfaces of the plates 11 and 21, and the edges of the front and rear boards 10 and 20. It is comprised with the buffer member 60. FIG.

  The buffer member 60 is, for example, rubber or the like, and when the front and rear boards 10 and 20 are tilted toward the ground due to the twisted pipe 40 being twisted, the edges of the front and rear boards 10 and 20 are not brought into direct contact with the ground. Is for. That is, as shown in FIG. 1, it is formed following the shape of the edge of each of the front and rear boards 10 and 20, and is attached to the edge of the bottom surface of each of the front and rear boards 10 and 20. In addition, as long as it is a member which does not damage the ground even if it contacts the ground, the material, shape, mounting position, and number are arbitrary. Therefore, for example, the shape which pinches | interposes the plane side and the bottom face side with the edge of each board 10 and 20 before and behind may be sufficient.

  Next, the inclined eccentric caster 13 will be described with reference to the drawings. FIG. 2 shows the side of the tilted eccentric caster 13 attached to the previous board 10. In addition, since each inclination type eccentric caster 13 and 23 is the same structure, the inclination type eccentric caster 23 attached to the board 20 of the back is abbreviate | omitted.

  As shown in FIG. 2, the tilt type eccentric caster 13 is supported by the roller support portion 34 formed on the bottom surface of the plate 11 and the roller support portion 34 via the rotation shaft 5, and the roller support portion. The roller arm 35 is rotatable about the rotation shaft 5 relative to the rotation shaft 5, and the roller 36 is supported by a shaft at the center of the arm of the roller arm 35. The roller support portion 34 is formed in a wedge shape by being formed thicker on the front side than on the rear side, and is formed with an inclined surface 37 that is inclined toward the ground side from the rear side toward the front side. The angle of the inclined surface 37 with respect to the plate 11 (the angle formed between the connecting surface between the roller support portion 34 and the plate 11 and the inclined surface 37) is an acute angle θ. Since the rotation shaft 5 is attached to the inclined surface 37 at a right angle with respect to the roller arm 36, the rotation shaft 5 is inclined obliquely forward with respect to the vertical axis in a side view. The inclination angle of the rotation shaft 5 with respect to the vertical axis is the same as the acute angle θ.

  Next, the twisted pipe 40 will be described with reference to the drawings. FIG. 3 shows a cross-sectional structure of the twisted pipe 40, and FIG. 4 shows a perspective view of the appearance of the twisted pipe.

  As shown in FIG. 3, the twisted pipe 40 includes two front and rear pipes 41 and 50, an inner pipe 52 attached to the inner side of the rear pipe 50, and a front end of the inner pipe 52. The latch springs 53 and 54 connected to the pipe 41 and the plate spring 55 as an elastic member disposed inside the rear pipe 50 are configured.

  The rear pipe 50 and the inner pipe 52 are connected to each other through a bearing 51 disposed in the groove formed with an annular groove on the side surfaces facing each other. That is, the rear pipe 50 and the inner pipe 52 can be rotated on the same axis via the bearing 51 and are restricted from being separated from each other in the axial direction.

  The latch spring 53 is a leaf spring, and is attached to the inner side of the inner pipe 52 in a state of being bent and compressed in a dogleg shape. The latch spring 54 is formed to protrude from the side surface of the tip of the leaf spring, and protrudes from the holes formed in the side surface of the inner pipe 52 and the side surface of the previous pipe 41 by the restoring force of the compressed leaf spring. ing. With this configuration, the front pipe 41 and the inner pipe 52 are connected via the latch spring 53 by the restoring force of the latch spring 53, while the front pipe 41 and the inner pipe 52 are compressed by the latch spring 53 being compressed. Is separated. That is, the latch springs 53 and 54 restrict the front pipe 41 and the inner pipe 52 from rotating on the same axis and can be attached to and detached from each other in the axial direction. When the front pipe 41 and the inner pipe 52 are separated and the front and rear boards 10 and 20 are separated, the bulk can be reduced, and storage and carrying are convenient.

  As shown in FIG. 4, the plate spring 55 is disposed inside the rear pipe 50, the front end is connected to the inner pipe 52, and the rear end is connected to the holder 56. The plate spring 55 is elastically deformed when it receives a torsional force due to the relative torsional motion of the front and rear pipes 41 and 50 (see FIG. 3), and is restored to its original state when the torsional force is released. By this action, the twisted pipe 40 is twisted or returned to its original state.

  As described above, the skateboard 1 according to the present embodiment is configured. Next, the effect | action in the propulsion | promotion of the skateboard 1 which concerns on this embodiment is demonstrated based on drawing. FIG. 5 shows the movement of the skateboard 1 as it slides and turns.

  As shown in FIG. 5 (a), the skateboard 1 to which the inclined eccentric casters 13 and 23 are attached has a user who puts one foot on each of the front and rear boards 10 and 20, respectively. By tilting the foot 2 on the board 10 side to the right in the traveling direction 4, the roller arm 35 of the tilt type eccentric caster 13 of the previous board 10 rotates to the right (the left side that is the opposite direction to the direction in which the foot 2 is tilted). The roller 36 rolls to the right. That is, since the front board 10 rotates to the right with respect to the rear board 20, the skateboard 1 turns to the right.

  On the other hand, as shown in FIG. 5B, the user tilts the foot 3 on the rear board 20 side to the right in the traveling direction 4, so that the roller arm 25 of the inclined eccentric caster 23 of the rear board 20. Rotates to the right (sway to the left, which is the direction opposite to the direction in which the foot 3 is tilted), and the roller 26 rolls toward the right. That is, since the rear board 20 rotates to the left with respect to the front board 10, the skateboard 1 turns to the left.

  Further, as shown in FIG. 5C, the front board 10 is tilted to the right in the traveling direction 4 and the rear board 20 is tilted to the left in the traveling direction 4. Rotate to the right on a small circular orbit with the total length of. Further, the skateboard 1 moves in parallel in the tilted direction when both the front and rear boards 10 and 20 are tilted in the same direction during sliding.

  Next, a mechanism for generating a propulsive force necessary when the skateboard 1 slides will be described with reference to the drawings. FIG. 5 (d) shows the state of the force acting on the skateboard 1 when the user exercises to twist the body to the left side in the traveling direction 4. As shown in FIG. 5 (d), the skateboard 1 moves the front board 10 in the positive direction of the y-axis by moving the user to twist the body to the left side in the traveling direction 4. On the other hand, a force is applied to the rear board 20 in the negative direction of the y-axis. In accordance with the magnitude of such force, the direction of each inclined eccentric caster 13, 23 (each roller arm 25, 35) changes, and each inclined eccentric caster 13, 23 (each roller arm 25, 35). And the x-axis (traveling direction 4) form constant angles α and β.

  Due to the wedge-shaped shape of the roller support portions 24 and 34 of the inclined eccentric casters 13 and 23, the inclined eccentric casters 13 and 23 (respective roller arms 25 and 35 ), Component forces F1 and F2 are generated. The horizontal (x-axis) components (F1 cos α, F2 cos β) of the component forces F1 and F2 are propulsive forces that advance the skateboard 1 in the traveling direction 4. Thus, it is not necessary for the user to kick the ground with his / her foot to obtain the propulsive force of the skateboard 1 during the slide, and the user can move his / her body left and right with respect to the traveling direction 4 on the front and rear boards 10 and 20. The skateboard 1 moves forward by twisting to the side. The vertical (y-axis) components (F 1 sin α, F 2 sin β) of the component forces F 1 and F 2 serve as moments that generate a rotational motion around the weight center of the skateboard 1.

  Next, the effect of this embodiment will be described.

  In the skateboard 1 according to this embodiment, the buffer member 60 is formed following the shape of the edge of each of the front and rear boards 10 and 20, and is attached to the edge of the bottom surface of each of the front and rear boards 10 and 20. With this configuration, when the board springs 55 are twisted and the front and rear boards 10 and 20 are inclined with respect to the ground during the sliding, the buffer members 60 come into contact with the ground, so that the front and rear boards 10 and 20 are Direct contact with the ground is prevented. Therefore, damage to the ground can be prevented. For example, even when used in an indoor facility, damage to the floor can be prevented.

  The skateboard 1 according to the present embodiment can rotate with a small radius during sliding. In addition, it is not necessary for the user to kick the ground with his / her foot to obtain the propulsive force of the skateboard 1 during the slide, and the user moves his / her body left and right with respect to the traveling direction 4 on the front and rear boards 10 and 20. The skateboard 1 can be advanced by twisting.

  The skateboard 1 according to the present embodiment has a twisted pipe 40 attached thereto. With this configuration, when the front and rear boards 10 and 20 are tilted left and right with respect to the traveling direction in order to change the direction in which the skateboard 1 is sliding or to generate a propulsive force, the restoring force of the leaf spring 55 is obtained. Acts to maintain the user's balance and to make the skiing safe.

  Next, another embodiment according to the present invention will be described.

  In the skateboard 1, the inclined eccentric casters 13 and 23 attached to the bottom surfaces of the front and rear boards 10 and 20 may be arranged in two or more in-line forms or aligned along the horizontal axis. Good. In these cases, the rotation radius is slightly increased, but the stability can be increased.

  In the skateboard 1, the inclined eccentric caster 13 may be attached to the front board 10, and one or more non-rotating axial tires may be attached to the rear board 20. In this case, rotation is only possible with the previous board 10 and can be safely used by an infant or child.

  In the skateboard 1, the front and rear boards 10, 20 may be connected by arranging an elastic body such as elastic rubber on both sides of the twisted pipe 40 in parallel therewith. An elastic restoring force can be obtained in the case of twisting or the like.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Skateboard 2 Front board side foot 3 Rear board side foot 4 Traveling direction 5 Rotating shaft 10 Front board 11, 21 Plate 13, 23 Inclined eccentric caster (caster)
20 Back board 24, 34 Roller support 25, 35 Roller arm 26, 36 Roller 27, 37 Inclined surface 40 Twisted pipe (connection member)
41 front pipe 50 rear pipe 51 bearing 52 inner pipe 53, 54 latch spring 55 leaf spring (elastic member)
56 Holder 60 Buffer member F1, F2 Component force θ Acute angle α, β angle

Claims (1)

A connecting member for connecting the front board and the rear board is provided,
Casters are attached to the bottom surface of the front board and the bottom surface of the rear board, and the caster is provided with a roller having a rotation shaft, and each of the rotation shafts of the roller rotates around the rotation shaft. Each of the rotating shafts is inclined obliquely forward with respect to the vertical axis in a side view,
An elastic member that is twisted when receiving a torsional force from the front and rear boards and that returns to its original state when the torsional force is released is provided in the connecting member,
A buffer member is provided on an edge of the front board and / or the rear board,
Skateboard characterized by that.

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