JP7323935B2 - Gradient tool - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sloper, and more particularly to a sloper used in boccia, which is a competitive sport for people with severe cerebral palsy.

Boccia is a competitive sport devised in Europe for people with severe cerebral palsy and people with equally severe impairments in the extremities. ) is a competitive sport. In recent years, in addition to being held as an official Paralympic sport, it is also attracting attention as a recreational sport that can be enjoyed by men and women of all ages, regardless of whether they have disabilities or not.

International competitions such as the Boccia Paralympics are divided into four classes, BC1 to BC4, depending on the type and degree of disability. It is designed to pitch using a slope tool (ramp, ramp). According to the rules, the slope tool has a free structure, except that the size must fit within an area of 2.5m x 1m when it is laid down. good too.

In a general sloper, a slope (inclined surface) is composed of a straight portion that is inclined with respect to the floor surface and an end portion that curves smoothly so as to connect the straight portion and the floor surface. When the ball (sphere) is released at an arbitrary position on the slope, it rolls on the slope while being accelerated, passes through the straight part and the end part, and is emitted forward. Depending on the development of the game, it is necessary to increase the launch speed of the ball, i.e., the power of the ball, in order to throw the ball farther or collide with another ball. You can increase the power of the ball by releasing the ball from above.

The sloper of Patent Document 1, which does not use an extension member, has a pair of air storage bags, which have a circular cross-section when filled with air, and are arranged side by side to form a slope extending in the longitudinal direction. A ball is adapted to roll on the upper surface between a pair of air storage bags. This slope tool is made of vinyl chloride, and since it is possible to change the shape of the slope, it is possible to adjust the height at which the ball is released and change the power of the ball.

Japanese Patent Application Laid-Open No. 2001-137414 (page 4, FIG. 1)

However, although the above-mentioned sloper using the extension member can increase the power of the ball by attaching the extension member, the structure of the sloper becomes large and difficult to handle. Since it has a component, energy loss occurs when passing through the end part, and the pitch cannot be sufficiently increased. In addition, since the energy loss at the end part differs depending on whether or not the extension member is attached, there is a problem that it is difficult to predict the power of the ball depending on the height at which the ball is released, and the feel of operation changes.

In addition, since the shape of the sloper of Patent Document 1 is manually deformed, it is difficult to deform the sloper accurately and reliably. required skill. In addition, it is difficult to form the end portion into a smooth curve in order to prevent energy loss at the end portion, because there is a limit to the deformation margin of the slope shape.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sloper capable of easily launching a ball with a desired power.

In order to solve the above problems, the gradient tool of the present invention is
An inclined portion having an inclined surface on which a sphere rolls, an adjusting portion capable of deforming the inclined surface into a plurality of shapes along cycloidal curves with different dynamic circle radii, and a support portion supporting the inclined portion. Characterized by
According to this feature, since the inclined surface can be deformed into a shape along each cycloidal curve with a different dynamic circle radius by the adjusting section, the inclined surface having different height positions of the highest point of the inclined section can be easily formed and desired. You can shoot the ball with ball power.

The inclined portion is a thin plate having flexibility, and the inclined surface can be deformed into a shape along a cycloidal curve by placing and supporting the thin plate on the adjustment portion.
According to this feature, it is possible to easily construct an inclined surface having a shape along a cycloidal curve.

The support portion includes at least one side plate in which a plurality of holes are formed at intervals along a shape along each cycloidal curve having a different dynamic circle radius, and the adjustment portion is provided in the plurality of holes. It is characterized by a plurality of support rods that can be detachably inserted.
According to this feature, the inclined surface can be deformed into a shape along a desired cycloidal curve by inserting the plurality of supporting rods into the plurality of specific holes and placing and supporting the inclined surface on the plurality of supporting rods. .

The support portion includes at least one side plate having grooves formed along cycloidal curves having different radii of dynamic circle, and the thin plate can be detachably fitted into the grooves. The adjusting portion is characterized by being a lower wall that partitions the lower side of the groove.
According to this feature, by fitting the thin plate into the specific groove and supporting the thin plate on the lower wall, the thin plate can be deformed into a shape along each desired cycloidal curve.

A plurality of the thin plates are placed and supported on the plurality of adjusting portions provided on the side plate.
According to this feature, by removing the thin plate having the inclined surface placed and supported along the shape along the cycloidal curve with the small radius of dynamic circle, it is placed along the shape along the cycloidal curve with the large radius of dynamic circle. Since a thin plate having an inclined surface supported in place can be used, the thin plate to be used can be smoothly changed.

1 is a perspective view showing a sloper in Example 1 of the present invention. FIG. FIG. 4 is an exploded perspective view showing a sloper; It is a side cross-sectional view of the sloper when a thin plate is attached to the rear. It is a side cross-sectional view of the sloper when a thin plate is attached to the front. FIG. 4 is a side cross-sectional view of the sloper with thin plates attached to the front and rear; (a) is an enlarged perspective view showing a set hole formed in the inclined surface of the thin plate, and (b) is an enlarged perspective view showing a set piece attached on the inclined surface of the thin plate. FIG. 10 is a perspective view showing a sloper in Modification 1 of Embodiment 1; FIG. 11 is a perspective view showing one side plate in Modification 2 of Embodiment 1; Fig. 10 is a perspective view showing a sloper in Example 2 of the present invention; It is a side view which shows partially fractured slope tool in Example 2 of this invention.

A mode for carrying out the sloper according to the present invention will be described below based on an embodiment.

A sloper according to a first embodiment will be described with reference to FIGS. 1 to 8. FIG. Hereinafter, the lower right side of the paper surface of FIG. 1 and the right side of the paper surface of FIG.

As shown in FIGS. 1 and 3, the sloper 1 includes a thin plate 2 as an inclined portion, a pair of left and right side plates 3 and 3 as a support portion for supporting the thin plate 2, and a pair of side plates 3 and 3. Mainly by a plurality of support rods 4, 4, . It is configured.

The thin plate 2 is formed of a flexible soft acrylic resin or the like, and has an inclined surface 21 that can be deformed into a shape along a cycloidal curve, which will be described later, and a flat surface 22 that extends rearward from the upper end of the inclined surface 21 . A sphere B (sphere) can roll on the flat surface 22 and the inclined surface 21 . A set hole 23 having a diameter smaller than that of the ball B is formed in the flat surface 22, and the ball B can be set by fitting the lower end of the ball B into the set hole 23 (Fig. 1 and 3 (see double-dot chain lines). Since the thin plate 2 has translucency, it is possible to improve the visibility of the players and the game assistants, but the thin plate 2 may not have translucency.

Here, the cycloidal curve is a curve that can be represented by Equation 1 using the parameter θ, and is also called the slowest descent curve. The a in Equation 1 is the radius of the dynamic circle, and the horizontal and vertical dimensions of the cycloidal curve are proportional to the radius of the dynamic circle a. Hereinafter, in this embodiment, a figure (horizontal dimension πa, vertical dimension 2a, length 4a) that is vertically inverted with respect to the range of θ from 0 to π radians is referred to as a cycloid curve.

As shown in FIG. 2, the side plate 3 has holes F1 to F6 and holes R1 to R11 in order from the top along two cycloidal curves (not shown) having different dynamic circle radii a and having the same lowest point. formed. Since the holes F1 to F6 are along the cycloid curve with a small radius of dynamic circle a, they are positioned in front of the holes R1 to R11 along the cycloid curve with a large radius of dynamic circle a, and near the lowest point. Both curves pass through the hole X formed. Further, a hole F0 is formed at the same height position behind the hole F1, and a hole R0 is formed at the same height position behind the hole R1. In addition, the hole F0 and the hole R0 are not limited to one, and a plurality of holes may be provided so as to be arranged in the front-rear direction. Furthermore, the number of holes F0 to F6 and holes R0 to R11, the intervals between holes F0 to F6 and the intervals between holes R0 to R11 are not limited to those shown in FIG.

The inner surface of the wall portion 31 located above the holes F0 and F1 of the side plate 3 and in front of the holes F1 to F6 and X functions to prevent the rolling ball B from falling off the flat surface 22 and the inclined surface 21. have Similarly, the inner surface of the wall portion 32 positioned above the holes R0, R1 and in front of the holes R1 to R11, X functions to prevent the rolling ball B from falling off the flat surface 22 and the inclined surface 21. have. In addition, since the vertical dimension of the wall portion 31 is smaller than the diameter of the ball B, when the player releases the ball B, the ball B set in the set hole 23 of the flat surface 22 of the thin plate 2 attached to the front can be accessed. It's easy to do. The vertical dimension of the wall portion 31 may be larger than the diameter of the sphere B. Furthermore, the side plates 3 are made of translucent acrylic resin in order to improve the visibility of the athletes and competition assistants, but are not limited to this, and may be made of wood for ease of processing, for example. good.

In this embodiment, the support rods 4 are composed of pins (see FIG. 2), and can be detachably fitted into the holes F0 to F6, the holes R0 to R11 and the holes X of the side plate 3. As shown in FIG. By fitting the support rods 4 into these holes, the thin plate 2 can be placed between the pair of left and right side plates 3, 3, and the thin plate 2 is placed on the plurality of support rods 4, 4, . . . It can be placed and supported.

As shown in FIG. 2 , the auxiliary tool 5 has an E-shape when viewed from above, and includes a base portion 51 that extends left and right, a left leg portion 52 that extends forward from the left end of the base portion 51 , and a left leg portion 52 that extends forward from the left end of the base portion 51 . It has a central leg portion 53 extending forward and a right leg portion 54 extending forward from the right end of the base portion 51 . In addition, the auxiliary tool 5 has a left groove 55 defined by the left leg portion 52, the central leg portion 53 and the base portion 51, and a right groove 56 defined by the right leg portion 54, the central leg portion 53 and the base portion 51. formed. The left side plate 3 can be detachably fitted into the left groove 55, and the right side plate 3 can be detachably fitted into the right groove 56, so that the side plates 3, 3 can be tilted left and right by the auxiliary tool 5. can be prevented. In addition, since the central leg portion 53 has a predetermined width in the left-right direction, the pair of left and right side plates 3, 3 have a predetermined separation dimension, so that the support rods 4, 4, . . . can be done. In addition, since the auxiliary tool 5 is not an essential component of the slope tool 1, it may be omitted.

Next, regarding the assembly of the sloper 1, the case where the thin plate 2 is attached to the rear side will be described. Referring to FIG. 2, the left and right side plates 3, 3 are fitted into the left groove 55 and the right groove 56 of the auxiliary tool 5, respectively, and the left and right side plates 3, 3 are erected with a predetermined left-right separation dimension. . Then, a plurality of support rods 4, 4, . . . are fitted into the holes R0 to R11, X of the pair of side plates 3, 3. A thin plate 2 is deformed along a plurality of support rods 4, 4, . . . Specifically, the flat surface 22 of the thin plate 2 is placed and supported along the support rods 4, 4 corresponding to the holes R0, R1, and the inclined surface 21 of the thin plate 2 is supported corresponding to the holes R1 to R11, X. The rods 4, 4, . Hereinafter, the thin plate 2 attached to the rear in this way may be referred to as the "rear thin plate 2". Furthermore, a magnetic seal (not shown) may be attached to the left and right ends of the back surface of the thin plate 2 in the longitudinal direction, and these may be magnetically attracted using a support rod 4 made of metal. The thin plate 2 is placed and supported stably without sliding down on the support rods 4, 4, .

Also, when the same thin plate 2 is attached to the front, a plurality of support rods 4, 4, . . . A thin plate 2 is deformed along a plurality of support rods 4, 4, . . . Specifically, first, the flat surface 22 of the thin plate 2 is placed and supported along the support rods 4, 4 corresponding to the holes F0, F1, and then the inclined surface 21 of the thin plate 2 is made to correspond to the holes F1 to F6, X. , along the top of the support rods 4, 4, . At this time, since the length of the cycloidal curve increases as the dynamic circle radius a increases, the front end portion of the thin plate 2 extends further forward than the side plate 3 while being in contact with the floor surface G as a surplus (see FIG. 4). ). Although an example in which the thin plate 2 is arranged with reference to the support rods 4, 4 corresponding to the holes F0 and F1 has been described, the thin plate 2 is arranged with the front end portion of the side plate 3 as a reference. The end portion may be used as a surplus portion. Furthermore, hereinafter, the thin plate 2 attached to the front as described above may be referred to as the "front thin plate 2".

In this way, the support rods 4 corresponding to the holes X support the front thin plate 2 and the rear thin plate 2 thereon. In order to improve the accuracy of each cycloidal curve with a different dynamic circle radius a, the side plate 3 may be formed with a hole X in the front and back, and the hole X is provided at a position close to the floor surface G. Hole X may be omitted.

As shown in FIGS. 3 and 4, when the sloper 1 is assembled, the front end of the inclined surface 21 forming a cycloidal curve is in contact with the floor surface, so that the ball B rolling on the inclined surface 21 falls. The ball B can be smoothly emitted forward without being impacted. Also, if the inclined surface 21 is transformed from a cycloidal curve with a small radius of dynamic circle a to a cycloidal curve with a large radius of dynamic circle a, the vertical dimension increases and the position where the ball B is released can be raised, thereby increasing the power of the ball B. be able to. In this manner, by deforming the inclined surface 21 into a cycloidal curve with a different dynamic circle radius a in accordance with the development of the game, it is possible to easily launch the ball B with a desired power.

In this embodiment, as shown in FIG. 5, a front thin plate 2 and a rear thin plate 2 having different lengths may be used. According to this, the thin plates 2 can be used that match the length of each cycloidal curve, so that the thin plates 2 can be placed and supported on the support rods 4, 4, . . . easily and reliably.

In this case, the front thin plate 2 may be placed and supported on the support rods 4, 4, . According to this, by removing the front thin plate 2, the rear thin plate 2 can be used, so that the thin plate 2 to be used can be smoothly changed. Although the front thin plate 2 is superimposed on the rear thin plate 2 at the front end, the thickness of the thin plate 2 is sufficiently thin so that the influence of the superposition on the rolling motion of the ball B can be ignored.

1, 3, and 4, the ball B can be set in the setting hole 23 of the flat surface 22 of the thin plate 2, so that the ball B can be reliably set from the highest point of the thin plate 2. It can be released, and high ball power can be obtained. In addition, since the inclined surface 21 has a cycloid curve shape, the ball B rolling on the inclined surface 21 and emitted from the end portion travels only in a substantially horizontal direction, resulting in energy loss at the end portion. Even when the rear thin plate 2 is used, there is almost no energy loss at the end, and it is easy to predict sufficient power from the height at which the ball B is released, and it can be used without changing the feeling of operation. It should be noted that the present invention is not limited to this, for example, as shown in FIG. The ball B may be set on a set piece 23b that can be detachably mounted on the inclined surface 21 as shown.

As described above, the thin plate 2 having the inclined surface 21 on which the ball B rolls, the supporting rod 4 capable of deforming the inclined surface 21 into two shapes along cycloidal curves with different dynamic circle radii a, and the thin plate 2 Since the sloper 1 includes the supporting side plates 3, it is possible to easily form the inclined surfaces 21 having different height positions of the highest points of the thin plates 2 and to shoot the ball B with a desired power.

In addition, the thin plate 2 has flexibility, and by placing and supporting the thin plate 2 on the support rods 4, 4, . An inclined surface 21 having a shape along a cycloidal curve can be configured.

Further, the side plate 3 is formed with holes F1 to F6, X and holes R1 to R11, X spaced apart along the shape along each cycloidal curve having a different dynamic circle radius a. 4, . By placing and supporting the inclined surface 21 on a plurality of supporting rods 4, 4, .

Modification 1 of Embodiment 1 will be described. It should be noted that the same reference numerals are given to the same components as those shown in the above embodiment, and redundant explanations will be omitted. As shown in FIG. 7, the sloper 1a is provided with a support tripod 5a as a support portion. 4, . . . and a pair of side plates 3a, 3a. Since the rear lower part of the side plate 3a is notched, the weight of the sloper 1a can be reduced.

Modification 2 of Embodiment 1 will be described. It should be noted that the same reference numerals are given to the same components as those shown in the above embodiment, and redundant explanations will be omitted. As shown in FIG. 8, on one side plate 3b, support rods 4, 4, . are placed. More specifically, support rods 4, 4, . 4, . According to this, when the other side plate 3 (not shown) is brought close to the one side plate 3b from the right side, the support rods 4, 4, . . . can be fitted into the holes F0 to F6, X of the other side plate 3. When the other side plate 3 is approached from the left side, the support rods 4, 4, . . . can be inserted into the holes R1 to R11, X of the other side plate 3. Since the support rods 4, 4, . It can quickly transform into any shape.

A sloper according to a second embodiment will be described with reference to FIGS. 9 and 10. FIG. It should be noted that the description of the configuration that is the same as that of the first embodiment and overlaps will be omitted. The sloper 101 in this embodiment has grooves 104F, 104R, 104F, and 104R along two cycloidal curves (not shown) with different dynamic circle radii a having the same lowermost points on the pair of side plates 103 and 103, respectively. formed. More specifically, the grooves 104F, 104F are open inwards to the left and right, and the upper rear ends of the grooves 104F, 104F are also open upwards, defining the lower sides of the grooves 104F, 104F. Horizontal surfaces 142F, 142F facing rearward are formed at the rear upper end portions of the lower walls 141F, 141F as adjustment portions, and the upper portions of the horizontal surfaces 142F, 142F are open. Similarly, the grooves 104R, 104R are opened inwards to the left and right, and the upper rear ends of the grooves 104R, 104R are also opened upwards, so that the grooves 104R, 104R are adjusted to partition the lower sides thereof. Horizontal surfaces 142R, 142R extending rearward are formed at the rear upper end portions of the lower walls 141R, 141R as parts, and the upper portions of the horizontal surfaces 142R, 142R are open. Further, in front of the pair of side plates 103, 103, concave grooves 104F, 104R are merged, respectively, and both are closed at the front ends.

10, the thin plate 2 is inserted into the concave grooves 104R, 104R from above, and the inclined surface 21 of the thin plate 2 is aligned with the lower walls 141R, 141R along a cycloidal curve with a large dynamic circle radius a. After being deformed and placed and supported, the flat surface 22 of the thin plate 2 is placed and supported on the horizontal surfaces 142R, 142R, whereby the thin plate 2 can be attached to the rear of the pair of side plates 103, 103. FIG. Similarly, referring to the double dashed line in FIG. 10, the thin plate 2 is inserted into the concave grooves 104F, 104F from above, and the inclined surface 21 of the thin plate 2 is aligned with the lower walls 141F, 141F, and the dynamic circle radius a is small. After deforming along the cycloidal curve and placing and supporting, the flat surface 22 of the thin plate 2 is placed and supported on the horizontal surfaces 142F, 142F, whereby the thin plate 2 can be attached in front of the pair of side plates 103, 103. . According to this, the thin plate 2 is fitted into the grooves 104F, 104F or the grooves 104R, 104R, and the inclined surface 21 is supported on the lower walls 141F, 141F or the lower walls 141R, 141R. It can be transformed into a shape along each cycloid curve.

Regarding the mounting of the pair of side plates 103, 103 of the thin plate 2, an example in which the thin plate 2 is inserted into the grooves 104F, 104F or the grooves 104R, 104R from above has been described, but the present invention is not limited to this. The side plates 103, 103 may be sandwiched from the left and right.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and any changes or additions within the scope of the present invention are included in the present invention. be

For example, although it has been described that the inclined surface 21 of the thin plate 2 can be deformed along two cycloidal curves with different dynamic circle radii a, the present invention is not limited to this, and the inclined surface 21 can be deformed along three or more cycloidal curves. can be done.

In addition, the structure in which two thin plates 2 having cycloid curved inclined surfaces 21 with different dynamic circle radii a can be arranged in front and behind has been described, but the present invention is not limited to this. It can be structured.

Also, the manner in which the ball B is released from near the highest point of the inclined surface 21 has been described, but the ball B may be released at any position on the inclined surface 21 without being limited to this.

Also, by using a thin plate 2 with a rough surface, the power of the ball B may be intentionally reduced by frictional resistance.

1, 1a Gradient tool 2 Thin plate (inclined part)
3 side plate (supporting part)
3a, 3b Side plate 4 Support rod (adjustment part)
5a Supporting tripod (supporting part)
21 Inclined surface 101 Gradient tool 103 Side plate 104F Groove 104R Groove 141F Lower wall (adjustment part)
141R lower wall (regulator)
B sphere (sphere)
F0 to F6 hole G floor surface R0 to R11 hole X hole

Claims (5)

An inclined portion having an inclined surface on which a sphere rolls, an adjusting portion capable of deforming the inclined surface into a plurality of shapes along cycloidal curves with different dynamic circle radii, and a support portion supporting the inclined portion. Characteristic ramp. The inclined portion is a thin plate having flexibility, and the inclined surface can be deformed into a shape along a cycloidal curve by placing and supporting the thin plate on the adjusting portion. Item 1. The sloper according to item 1. The support portion includes at least one side plate in which a plurality of holes are formed at intervals along a shape along each cycloidal curve having a different dynamic circle radius, and the adjustment portion is provided in the plurality of holes. 3. A sloper according to claim 2, characterized in that it is a plurality of support bars that can be removably fitted. The support portion includes at least one side plate having grooves formed along cycloidal curves having different radii of dynamic circle, and the thin plate can be detachably fitted into the grooves. 3. The sloper according to claim 2, wherein the adjustment part is a lower wall that defines the lower side of the groove. 5. The sloper according to claim 3, wherein a plurality of said thin plates are placed and supported on said plurality of adjusting portions provided on said side plate.

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