JPH0247966Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use This invention relates to an auxiliary mat for balance beams, etc., which is used by being attached to the main body of balance beams, etc., especially for the purpose of preventing injuries during performance practice of balance beams and vaulting.

Conventional Techniques Advanced performance training such as spinning techniques on the balance beam is
This often involves failures such as missteps, and there is a risk of injury, as well as the risk of joints and muscles being damaged by repeatedly placing your hands and feet on the top surface of the hard balance beam body with strong impact. It often hurts. For this reason, in order to eliminate fear and allow children to practice with peace of mind, it has recently become necessary to cover the body of the balance beam with an auxiliary mat made of felt or the like, especially when targeting children. Acting practice is being conducted with safety in mind.

In addition, instead of such an auxiliary mat, an elastic sheet covering the top surface and both side surfaces of the main body of the balance beam is loaded in a bag-shaped cover member made of canvas or the like, and the elastic sheet covers both lower edges of the cover member. An auxiliary mat has been proposed in which tightening strings are attached at predetermined intervals at corresponding positions (for example, Japanese Utility Model Publication No. 129955/1984).

Problems to be Solved by the Invention However, the former type of auxiliary mat does not fit well to the balance beam body, impairing the accuracy of the balance beam. In particular, the surface edges of the balance beam body become rounded and the balance beam becomes less flexible, which poses a problem for performance practice.

On the other hand, in the case of the latter auxiliary mat, in order to attach it to the main body of a balance beam, etc., it is necessary to tie the auxiliary mat in a state where the lower edges of the auxiliary mat are strongly pulled together on the underside of the main body using the above-mentioned string. There is. However, with such a mounting structure in which strings are tied at predetermined intervals, if the strings are tied particularly strongly, some parts will come into close contact with the main body of the balance beam and others will rise, resulting in a wavy surface. Such a condition is visually harmful and impairs the accuracy of the balance beam, etc. Furthermore, neither of the auxiliary mats is well fitted to the main body, and there is often a risk that the auxiliary mats may slip during performance practice.

This invention was made in order to solve the above-mentioned problems, and it can be fitted well to the main body of the balance beam, etc. in the installed state, without impairing the accuracy of the balance beam, etc. To provide an auxiliary mat for a balance beam, etc., which does not cause slippage.

Means for Solving the Problems The auxiliary mat according to this invention is attached to the main body of a balance beam or the like in a wrapped manner, and the both lower edges thereof extend over the entire length to the lower surface of the main body. In order to tighten the ends evenly, cylindrical parts are provided at predetermined intervals along the length direction of both lower edges through notches, and rod-shaped bodies are inserted through the rows of cylindrical parts. However, the rod-shaped bodies are tightened together using a tightening member.

That is, this invention is based on the main body A of the balance beam or vaulting horse.
an elastic sheet 1 that covers at least the upper surface of the main body A; and an elastic sheet 1 that covers the upper surface of the sheet 1 and both side surfaces of the main body A, and has notches 5 along the length of both lower edges.
a cover member 2 with cylindrical portions 6 extending therethrough at predetermined intervals; a pair of rigid rod-like bodies 3, 3 inserted through both of the six cylindrical portions; The gist of the present invention is an auxiliary mat for a balance beam, etc., characterized by comprising a tightening member 4 that tightens the left and right corresponding exposed portions of the cutout portion 5 on the lower surface side of the main body A. .

Example This invention will be explained based on illustrated embodiments.

In the embodiment shown in FIGS. 1 to 3, 1
2 is an elastic sheet, 2 is a cover member, 3 is a rigid rod-shaped body, and 4 is a tightening member.

The elastic sheet 1 includes an upper surface sheet 1a having a predetermined width, which covers the upper surface of the balance beam main body A, and is formed in a shape that is approximately the same width as the main body A or slightly wider, and the main body A.
It consists of side sheets 1b and 1c formed in a size that can cover both sides of the.

The top sheet 1a has a thickness of approximately 10 mm on the top surface of the polyurethane synthetic resin foam layer 1a' having a thickness of approximately 10 mm.
It has a two-layer structure that integrates laminated ethylene-vinyl acetate copolymer (EVA) resin foam layers 1a'' of about 10 mm, and balances the characteristics of both impact resilience and shock absorption, so that it is so-called bottomed out when landing on the platform. It is made to have no feeling, has good firmness, and has excellent mounting stability.From this point of view, the content of vinyl acetate in the EVA resin foam layer 1a'' is 25%.
It is desirable that the elasticity is about 28%, and the rebound modulus is preferably about 45 to 65%, particularly preferably about 53 to 56%. Further, it is desirable that the impact resilience modulus of the polyurethane synthetic resin foam layer 1a' is about 35 to 55%, particularly preferably about 44 to 46%.

Further, for the side sheets 1b and 1c, EVA resin foam similar to the above with a thickness of about 10 mm is preferably used.

The cover member 2 is made of a strong fabric such as canvas or artificial leather, and has a bag portion 2 partitioned in the width direction as shown in FIGS. 2 and 3.
a, 2a, and 2a are arranged in parallel, and the elastic sheets 1a, 1b, and 1c are loaded into these bag portions, respectively. Further, on both ends of the cover member 2 in the width direction, a plurality of cylindrical portions 6 are provided extending at predetermined intervals along the length direction through notches 5, and six rows of the cylindrical portions are provided. Rigid rod-shaped bodies 3, 3 are removably inserted into the respective portions.

As the rod-shaped bodies 3, 3, for example, a solid wooden rod or a hollow pipe made of stainless steel is used.

Then, the notch portion 5 of one of the rod-shaped bodies 3
By passing the rod-shaped body 3 through the cylindrical part 4a formed at one end of the tightening member 4, which is made of a strong band made of canvas or synthetic resin, etc. It is attached removably. This band-like tightening member 4...
Hook-and-loop fasteners 7, 7 are attached to the proximal end on one side and the distal end on the same surface, respectively, so that they can be releasably connected to each other.

This auxiliary mat is attached to the balance beam main body A in the following manner.

The balance beam main body A is covered with the top sheet 1a and the side sheets 1b and 1c so as to be disposed on the upper surface and both side surfaces of the balance beam main body A, respectively. Then, the tips of each band-shaped tightening member 4 attached to one rigid rod-shaped body 3 are guided from the lower surface side of the main body A to the other rod-shaped body 3 side, and the corresponding notch 5 of the cover member 2 is guided. It is wound around the exposed portion of the rod-shaped body 3 exposed at step 3, folded back, and tightened so that the distal end portion overlaps the proximal end portion and is releasably connected via the hook-and-loop fasteners 7, 7. As a result, the auxiliary mat can be attached to the main body A in close contact with the main body A over its entire length without any undulations on the upper surface, and inadvertent displacement can be reliably prevented.

Next, a second embodiment shown in FIGS. 4 and 5 will be described.

The auxiliary mat of this embodiment is used by being attached to the main body A of the balance beam as in the above embodiment, but the elastic sheet 10 and the cover member 20 are separated.

This elastic sheet 10 is made up of a top sheet 10a and side sheets 10b, 10c similar to those in the embodiment described above, which are fixed in a substantially U-shape facing downward when viewed from the side.

On the other hand, the cover member 20 includes the elastic sheet 1
0 is formed in a size that can cover the upper surface and both side surfaces of the main body A when it is attached to the main body A, and cylindrical portions 6 are provided on both lower edges of the same as in the previous embodiment.
0... are extended, and rigid rod-shaped bodies 30, 30 are inserted through the 60 rows of the cylindrical portions, and one of the rod-shaped bodies 30 is provided with a band-shaped tightening member 40...
is installed.

As shown in FIG. 5, the cover member 20 in this embodiment has both end portions in the length direction at the bent portions folded inward and sewn. Thus, in the attached state, both ends of the cover member 20 in the length direction are in contact with both ends of the elastic sheet 10, so the user can practice acting with peace of mind without tripping or tripping over the cover member 20. It is something that can be done.

The installation method is to first attach the elastic sheet 10 to the main body A.
The cover member 20 is placed over the top of the cover member 20 and tightened using the tightening members 40 as in the previous embodiment.

Next, a third embodiment shown in FIG. 6 will be described.

The auxiliary mat of this embodiment is used by being attached to the main body A of the vaulting horse, and is substantially the same as the first embodiment, except that the elastic sheet 100 loaded in the cover member 200 is attached to the main body A. The difference is that it is made up of a single seamless piece that covers the circumferential surface except for the bottom surface. Since the other configurations and attachment methods are substantially the same as those of the first embodiment, corresponding parts are given the same reference numerals and their explanations will be omitted.

The elastic sheet 100 in this embodiment has a urethane resin foam layer 100b with a thickness of about 10 mm laminated on the top surface of an EVA resin foam layer 100a with a thickness of about 20 mm, and a urethane resin foam layer 100b with a thickness of about 10 mm on the top surface of the EVA resin foam layer 100a with a thickness of about 10 mm. A three-layer structure in which foam layers 100c are laminated and integrated is preferably used. Any of the above-mentioned foam layers 100a, 100b, and 100c having the same composition and characteristics as those shown in the first embodiment can be suitably used. With this configuration, both rebound resilience and shock absorption characteristics are harmoniously satisfied, and there is no feeling of bottoming out, allowing you to practice repeatedly without hurting your wrist joints. It is said that it is possible to jump high based on its repulsion elasticity, making it possible to practice more advanced acting.

In each of the above embodiments, a band-like member equipped with a hook-and-loop fastener was used as the tightening member, but the present invention is not necessarily limited to this. It is also permissible to use a shaped member or the like.

Effects of the invention Since the auxiliary mat for balance beams, etc. according to this invention is equipped with an elastic sheet that covers at least the upper surface of the main body of the balance beam or vaulting horse, it can ensure the safety of those practicing performance. Of course, the mounting structure includes cylindrical parts that cover the upper surface of the sheet and both side surfaces of the main body, and extend at predetermined intervals along the length of both lower edges through notches. Using a cover member, a rigid rod-like body is inserted through both rows of cylindrical parts, and the left and right corresponding exposed parts of the notch of the rod-like body are tightened with a tightening member on the lower surface side of the main body. Because of this structure, both lower end edges of the cover member are tightened substantially uniformly over the entire length thereof. Therefore,
The entire auxiliary mat is attached to the main body in a parallel state, which not only provides a good visual appearance and maintains good accuracy as a balance beam, etc.
Unexpected accidents such as spraining a wrist or ankle due to tripping or getting caught on an uneven surface can be prevented.

Furthermore, as described above, since the auxiliary mat is well fitted to the main body in the attached state, the auxiliary mat does not accidentally shift during use and can be used safely.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Fig. 1 is a perspective view of the entire body with a partial cutout showing the state where it is attached to the balance beam body, Fig. 2 is an enlarged cross-sectional view along the line of Fig. 1, and Fig. 3 is an enlarged sectional view along the line of Fig. The figure is a partially cutaway plan view showing the unfolded state, FIGS. 4 and 5 show other embodiments, FIG. 4 is a sectional view showing the installation in progress, and FIG. Partially cutaway perspective view of the section, No. 6
The figure is a sectional view corresponding to FIG. 2 showing the state in which it is attached to the main body of the vaulting horse. A...Body of balance beam, etc., 1, 10, 100...
Elastic sheet, 2, 20, 200... Cover member, 3, 30... Rigid rod-shaped body, 4, 40... Tightening member, 5... Notch, 6, 60... Cylindrical part.

Claims (1)

[Claims for Utility Model Registration] (1) An elastic sheet 1 that covers at least the upper surface of the main body A of a balance beam or vaulting horse, and an elastic sheet 1 that covers the upper surface of the sheet 1 and both sides of the main body A, and that has long edges on both lower edges. A cover member 2 in which cylindrical portions 6 are extended at predetermined intervals along the width direction through notches 5, and a pair of rigid rod-shaped bodies 3, 3 inserted into both six rows of cylindrical portions. and a tightening member 4 for tightening the left and right corresponding exposed portions of the notch portions 5 of the rod-shaped bodies 3, 3 on the lower surface side of the main body A, for use on balance beams, etc. Auxiliary mat. (2) The tightening member 4 consists of a strong band whose one end is attached to one of the rod-like bodies 3, and hook-and-loop fasteners 7, 7 are fixed to the tip and base ends of the band on the outer surface side, respectively. An auxiliary mat for balance beams, etc. as described in Claim 1 of the Utility Model Registration Claim.