JPH0137648Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a balance beam that can be adjusted in height and tilted.

(Prior technology) Conventionally, as a balance beam that can be adjusted in height and tilted, a round pipe-shaped fixed leg is vertically installed on the upper surface of a grounding leg formed in a prismatic shape, and a round pipe-shaped fixed leg is raised and lowered to this fixed leg. A pair of supporting legs is formed by inserting and connecting the legs so that the height can be adjusted freely, the upper end of each elevating leg is swingably attached to the balance beam body, and a pair of bracing members are strung between the balance beam body and the supporting legs. What has been done is known.

(Problem that the invention aims to solve) In the conventional example, the round pipe-shaped lifting leg is inserted into the round pipe-shaped fixed leg, which causes slight movement in the circumferential direction.
Moreover, this combined with the fact that the grounding legs are prismatic, results in poor stability, and it is necessary to take other measures such as screwing to prevent the above-mentioned slight movement in the circumferential direction. Furthermore, since the pair of support legs in the conventional example are disposed at the same dimensions from both ends of the balance beam main body, the grounding legs collide with each other when two balance beams are placed side by side. For this reason, the two balance beams have to be placed side by side with offsets, and the ends of the two balance beams may shift, and if the user is a small child, the user may miss a step or
It is dangerous to hit a corner, and storing them side by side creates wasted space.

(Means for solving the problem) This invention is an attempt to solve the above-mentioned problem, that is, the fixed leg 3 is vertically installed on the upper surface of the grounding leg 2, and the fixed leg 3 is A pair of supporting legs 9, 9 are formed by connecting the lifting legs 4 so as to be adjustable in height, and the upper end of each lifting leg 4 is swingably attached to the balance beam main body 10, and a pair of bracing members 16, 16 are In the balance beam that spans between the stand body 10 and the supporting legs 9, the grounding leg 2 is formed into a flat shape, and the fixed leg 3 is formed into a flat shape.
is formed into a square pipe shape, the lifting leg 4 is formed into a square pipe shape that fits into the fixed leg 3, and the balance beam main body 10 is formed into a square pipe shape to fit into the fixed leg 3.
A point that is inward from one end by a predetermined dimension l, and a part that is a predetermined dimension l from the other end of the balance beam main body 10.
The supporting legs 9 are disposed inwardly by the sum of the width m of the grounding leg 2 and the width m of the grounding leg 2.

(Embodiment) In the embodiment shown in the figure, the grounding surface 1 is flat and wide, and a square pipe-shaped fixed leg 3 is vertically attached to the upper surface of the central part of the grounding leg 2, which has rubber covers 20 and 20' on both ends. the fixed leg 3 from the upper end of the fixed leg 3.
Square pipe-shaped lifting legs 4 with a slightly smaller diameter
Connect by inserting them so that the height can be adjusted freely. This connecting means has through holes 5, 6, and 6' that communicate with the middle part of the fixed leg 3 and the lower and intermediate parts of the lifting leg 4 when the lifting leg 4 is raised and lowered. A known stopper pin that cannot be removed when the tip is folded down perpendicular to the communicating through holes 5 and 6 and the communicating through holes 5 and 6' when descending, but allows removal when the tip is raised to be in a straight line. 7, and a pull-stopper ring 8 is formed at the base end of the stopper pin 7. Then, insert the stopper pin 7 into the through holes 5, 6 or through holes 5, 6'.
By selectively inserting the support legs 9, 9 into the
Configure.

In addition, as shown in Figure 5, there is a part that goes inward from one end of the balance beam main body 10 by a predetermined dimension l, and a part that goes inward from the other end by a predetermined dimension l plus the width m of the grounding leg 2 mentioned above. A pair of mounting plates 11 and 11' are fixed to the lower surface of the inward part, and each of these mounting plates 1
As shown in the fourth figure, a support shaft member 13 having a wide inverted U-shape is fixed to the central portion of 1 and 11', and a support shaft member 14 having a narrow inverted U-shape is fixed to the inner end portion thereof, The upper end of the lifting leg 4 is supported by the horizontal shaft 15 on the wide support shaft member 13, so that the support legs 9, 9 can be swung in and out of the balance beam main body 10, and the grounding leg 2
It is installed so that it is perpendicular to the balance beam main body 10 when viewed from above.

Furthermore, as shown in the third figure, a brace member 1 that maintains the support legs 9, 9 at right angles to the balance beam main body 10 on a line passing through the narrow support shaft member 14 and the stopper pin 7.
6, and the upper end of this bracing member 16 is swingably supported on the narrow support shaft member 14 with a pin shaft 17,
In addition, in each bracing member 16, the stopper pin 7 is
A pair of upper and lower shaft holes 18, 18' are drilled at locations corresponding to the upper and lower shaft holes 18, 18', and the stopper pins 7 inserted in the through holes 5, 6, 6' are selectively inserted into these pairs of shaft holes 18, 18'. In order to maintain the vertical state of the support legs 9, 9, a torsion spring 19 is wound around the pin shaft 17 as shown in the fourth figure, and one end of this torsion spring 19 is attached to the narrow support shaft member 14.
Similarly, the other ends are respectively locked to the bracing members 16,
Twisting the brace member 16 so that it does not wobble,
In addition, the lower end of the bracing member 16 is connected to the stopper pin 7.
The balance beam body 10 does not stop there, but is pressed against the lower surface of the balance beam main body 10 as shown by the dashed line in FIG. 1 when the balance beam is released. In addition, this idea is based on the lifting leg 4.
In some cases, the fixed leg 3 is made slightly larger than the fixed leg 3, and the height is adjusted in three or more stages.

In the above, when both support legs 9, 9 are in the extended state, the balance beam main body 10 is in a high position and horizontal state, and when it is in the shortened state, it is in a low position and horizontal state, and one support leg 9 is extended. state, and when the other supporting leg 9 is in the shortened state, the first,
As shown by the two-dot chain line in Figure 3, the tilted state is maintained, and the upper end of each lifting leg 4 can swing freely in the horizontal state (solid line in Figure 3) and tilted state (dashed line in Figure 3). Since the lifting legs 4 are fitted into and connected to the vertical fixed legs 3, the supporting legs 9, 9 always maintain a vertical state. In addition, not only one balance beam but also two balance beams can be arranged side by side as shown in Figure 5, and the balance beam main body 10 can be placed in a wide state, in an uneven state, or in an upright state (only one balance beam is in an inclined state and the other is in a horizontal state). In this embodiment, the mounting positions of one support leg 9 and the other support leg 9 are shifted so that both ends of both balance beams are aligned.

(Effects of the invention) This invention uses square pipe shapes for the fixed legs and square pipe shapes for the lifting legs that fit into the fixed legs, so it is possible to prevent rotation and slight movement in the horizontal direction. Combined with the flat legs, it has extremely good stability. Furthermore, this device has two areas: one that extends inward from one end of the balance beam body by a predetermined dimension, and one that extends inward from the other end of the balance beam body by the predetermined dimension plus the width of the grounding leg. Since the supporting legs are provided, when two balance beams are placed side by side, the ends can be immediately aligned without any adjustment.This allows for various side-by-side installations such as wide, uneven, or one-sided positions. In this state, when a child exercises, the child will not step on the edge of the balance beam or bump into the edge, making it safe, and there is no wasted space when storing the balance beam in parallel. Moreover, there is no chance of bumping into the protruding end during storage or removal work, and the work can be done safely.

[Brief explanation of drawings]

The figures show an embodiment of the balance beam of this invention, in which Fig. 1 is a front view showing the whole, Fig. 2 is a partially cutaway plan view, and Fig. 3 is an enlarged sectional view taken along line A-A.
FIG. 4 is an enlarged sectional view taken along the line B-B, and FIG. 5 is a partially omitted bottom view showing two balance beams arranged side by side. 2...Grounding legs, 3...Fixed legs, 4...Elevating legs,
9... Support leg, 10... Balance beam main body, 16... Bracing member.

Claims (1)

[Scope of utility model registration request] A fixed leg 3 is vertically installed on the upper surface of the grounding leg 2, and a lifting leg 4 is connected to the fixed leg 3 in a height-adjustable manner to form a pair of supporting legs 9, 9, with the upper end of each lifting leg 4 being averaged. In the balance beam which is swingably attached to the table main body 10 and in which a pair of bracing members 16, 16 are spanned between the balance beam main body 10 and the support legs 9, 9, the grounding leg 2 is formed into a flat shape, and the fixed leg 3 is formed in the shape of a square pipe, and the lifting leg 4 is formed in the shape of a square pipe that fits into the fixed leg 3; A balance beam characterized in that supporting legs 9, 9 are disposed inward from the other end of the main body 10 by the predetermined dimension l plus the width m of the grounding leg 2.