JPS58175576A - Step plate for gymnastics - Google Patents

Abstract

1. Spring board for gymnastics, wherein a curved top board (6) having a jumping-off area and a curved supporting board (1) form an acute angle and are separated at a distance from the angle apex by means of an S-shaped spring leaf (2), the top board (6) and the supporting board (1), the top board (6) and the spring leaf (2), as well as the spring leaf (2) and the supporting board (1) forming an abutment area in each case where they rest against one another, and a resiliently compressible, interposed spring element (4) is associated with at least one of the abutment areas, characterised in that the spring element (4) is interposed in at least one of the abutment areas, shears, and comprises a resilient property, which is softer than that of the spring board without the spring element.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the following features:
Two curved headboards and one curved bed board make an acute angle9, and at a distance from the sharp angle, an S-shaped spring board separates the headboard and bed board. With a railroad crossing board that seems to be separated.

Moreover, in this case, where the headboard and bedboard, the headboard and spring board, and the spring board and bedboard each overlap and support each other,
Each forming a support area.

This invention relates to such a railroad crossing board.

C17) Known woodcutter (7) (DI-P81032140
, DI-A82725401) In the level crossing board, the headboard,
The floor plate and the spring plate are adjacent to each other in the support area and are fixed to each other. Due to its spring characteristics, this board can only be set for a relatively narrow jump load range each time it is used. Therefore, if a lightweight person uses a board that is set for a heavy user, the results will not be good, and vice versa.

Therefore, one of the objects of the present invention is to create a new type of takeoff board that exhibits spring characteristics that are as similar as possible even if the jump load range is widened.

The level crossing board according to the present invention solves this problem and is characterized by the following. That is, in at least one support area, a spring element is provided which is elastic and capable of contracting, and this spring characteristic makes the spring element also more flexible than that of a railroad crossing board. Something.

The spring elm F is placed between the headboard and the floor board, the headboard and the spring board, or the spring board and the board.

When loaded, it absorbs downward or pushing forces. This spring element is more effective when a lighter person jumps, whereas other take-off boards work better when a heavier person jumps. The spring element placed between the two absorbs the pushing force, so
Damage due to fasteners in the support area is avoided.

The spring element absorbs the pushing forces, so that no damage occurs in the support area as a result of the pushing movements.

The volume of headboard and/or floorboard can be increased. The fact that it is now possible to amplify the deflection or curvature of the board means that it is not just a matter of increasing the amplitude of the crossing board;
It also contributes to expanding the range of loads for which level crossing boards can be used.

%, if the spring element is mounted only between the headboard and the spring plate. That is, the spring elements are scattered throughout the length of the crossing board. However, the tread plate is usually only formed by two crossbars which are connected to each other by a tie when the spring element is supported on the tread plate.

The spring element can also be made of a series of steel coils, for example. However, this is difficult to assemble,
Makes a loud noise when in use.

It is therefore particularly expedient for the spring element to
This is the case when the block element is made of an elastic and compressible material. This spring block element is small in size when assembled, and does not make noise during use. The spring block element is made, for example, of rubber or of a suitable plastic, for example polyurethane.

The spring element extends, for example, over the span of the takeoff board. It may also be a square piece of plastic. However, it is reasonable for 1% to have a spring element of 1%.
This is a case where each board is formed of an elastic body that is distributed independently over the length of the board. Them,
The spring properties of the PL spring element and the stepping board are improved by the elastic bodies arranged independently and spaced apart from each other.

The splash element may be solid, for example.

However, it may be advantageous for 4+1 if the spring block element is of hollow construction.

For example, desirable spring characteristics are particularly well achieved with relatively thick-walled, onion-like block elements.

The spring characteristics of the take-off board according to the present invention are generally softer than those of conventional take-off boards;
So, it is the ratio of load/spring amplitude. Under a constant maximum load, the spring amplitude of the level crossing board made by DI-M 82745401 is 帥■, while the main crossing board made according to this application shows a spring amplitude of 9120■ with the same maximum load. ing.

This has a total amplitude of about 50 birds, but it occurs when the total height of the board is correspondingly large.

The spring element carries a portion of the total amplitude of the takeoff board ~66X. If the headboard and floorboard are made available by application, 9. If it were to be amplified and bent so strongly, the amplitude of the spring element would be only 4096 of the total possible amplitude.If the same load was applied to each, the level crossing board according to the application would Patent application-
Compared to the level crossing board based on DI-M12725401, the sinkage (spring amplitude) is about 40% thicker on average: Furthermore,
When a static load of 200# is applied, about 219 degrees of sinking is large, and when a static load of 600# is applied to the warehouse, about 6 geese sinks.

If necessary, the spring element can also be left in place without being fixed. In order to prevent the spring element from changing its position automatically without blindness, the spring element should be pasted to the board on which it is sandwiched, or
He is arrested and arrested.

In any case, it is particularly expedient if the supporting area with spring elements and the two plates making up the supporting area are held together by one flexible and bendable frame. . In this frame, three plates made of, for example, several pieces of leather, with a spring element sandwiched between them, are placed in contact with the spring element, and these plates are made so that they do not work any further loosened. I try not to. In this case, the spring element must not be prevented from compressing.

In #A11I, a 9-layer structure suitable for this invention is displayed.

The tread fiJ board in the drawing has an elongated slat #i board l at the bottom, which is placed on top of the yuka and is made of two crossbars running parallel to each other and apart from each other.

The rib is curved or curved upward between its ends. Its length is 7 in., with a medium ciple, and it rests only at the ends. A single spring board is fixed on top of the paving board,
The shape of this spring plate is a sharp figure eight. The lower end is
6j) on top of the sill plate L, and is fixed with the sill plate IK screws.
Ru. Spring 4 [! teeth.

It is elastic and pliable over its entire width and is elastic and flexible over its entire length, and is located in the front half of the floor plate L.

The spring plate 2 has an elastic body s at its upper front end. -This series of elastic bodies is...

A total of one spring element 4 is formed.

Each elastic body 8 is cylindrical with a hollow #116, but is otherwise solid and formed as a wholesale block, and is made of plastic such as polyurethane. , the 0 elastic body 8 is arranged with the central axis perpendicular to the cavity bOIt, so that one 0 IIithi is attached to the upper part of the spring plate @CD1a, and the 0 elastic body 8 is
They are @ each other.

One foam rubber leg tag 9 is attached to l1IlllK on the lower side of the spring 412, and this is attached to wI4
1ri.

It softens the shock of collision.

111 seconds of St* in front of the head plate 60 is attached to the front of the elastic body 80. lI Ei 6 is.

The margin below is solid across its entire width, elastic and pliable over its entire length, and curved or curved between its ends. It rests on the edge of the l and is fixed to it with a screw.

At the corner between the headboard 6 and the floorboard 10, there is a gap formed by stacking several layers, and blocks 7 and 9 are attached.
On the underside of the II plate, a single band-shaped elastic and flexible reinforcing member 8 is attached to the rear 6. The head plate 6 and the spring plate 2 have a U-shaped cross section. <10
It is summarized by. 10 is formed as a hood, pushed over from the front, and pasted. The hood is made of ioam fibers or a plastic with a similar effect. The frame is made of a tensile material, such as PVO, and reinforced with fiberglass. According to 10, the head plate 6 and the spring plate 2 cannot be separated in the unloaded state by more than a distance determined by the height of the spring in the same support area.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a gymnastics takeoff board. FIG. 2 is a top plan view of the plane of the take-off board shown in FIG. 1 that leaves the board during a jump, and is a schematic diagram of the cross-sectional structure. The figure is smaller than that in Figure 1. l...11 plate, 2...spring plate, 3...elastic body, 4...
...Spring element, 5...Cavity, 6...Headboard, 7
... Gap block, 8... Reinforcement material, 9... Foamlano (- tape%lO... Hood-shaped frame...

Claims (1)

[Scope of Claims] (1) When jumping, one curved headboard and one curved footboard, which form the surface that separates from the board, form an acute angle9, and from this acute angle At the 9th place, the headboard and the bottom board are separated by a single spring board with a figure 8 shape, but in this case, the headboard and the bottom board, the headboard and the spring board, and the spring board and the bottom board are separated. where each overlaps and supports each other,
Gymnastics take-off boards each forming one support area. capable of elastically contracting into at least one support area;
A take-off board for gymnastics, in which a spring element is inserted, and the spring characteristics of the spring element are more flexible than those of a take-off board without a spring element. (a) The spring element has an elastic It must be a block element made of a material that can be reduced to t%.
A gymnastics track cutting board according to claim 1 or 2, which is a mold. (4) Any one of claims 1 to 3, characterized in that the spring element is formed by 1') N independent spring bodies scattered over the entire width of the railroad crossing board. The gymnastics stepping board described in item 1. (6) The gymnastics take-off board according to claim 3 or 4, wherein the spring block element has a hollow shape. (6) In the support area of this spring, the plates of the support area are held together by a flexible and bendable frame. Claims 1 to 3 The gymnastics stepping board according to any of Item 5.