JP3889359B2 - Multipurpose Hindan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stepped platform used for multiple purposes, such as taking a picture, performing a concert, chorusing, or displaying a work or the like.
[0002]
[Prior art]
Conventionally, three kinds of box-like bodies a, b, and c having different heights as shown in FIGS. 9 and 10 have been used side by side in a staircase pattern as shown in FIGS. 9 and 10, and on the back of the box-like bodies b and c when not in use. Box-shaped bodies a and b are accommodated in the formed notches b 'and c'. At the time of storage and installation, two people must face each other, put their hands in the finger holes d, and carry them while lifting them.
[0003]
[Problems to be solved by the invention]
The present invention makes it possible to quickly and surely and easily expand and fold when in use and when not in use, to enable easy and quick movement, and to perform these operations by one person. Let it be an issue.
[0004]
[Means for Solving the Problems]
The present invention is provided with a plurality of pairs of left and right lifting cylinders and columns that stand vertically, and the plurality of pairs of lifting cylinders and columns are arranged side by side with a height difference in the front-rear direction and with a gap therebetween. Each lifting cylinder and column are separated from each other at the center and connected by a horizontal first connecting member, and a pair of support arms are integrally and upwardly projected in the vicinity of both ends of the first connecting member, and are arranged at the front and rear. The lower cylinders having a height difference and the lower portions of the support columns are connected to each other by horizontal second connecting members, and a pair of casters are attached to the front and rear of each second connecting member. Each of the support legs having a difference in height is penetrated correspondingly, and a spring bearing with a smooth upper surface is provided on the head of each support leg to be integrated, and a floor contact cap having a diameter larger than each of the lifting cylinders is attached to the bottom part, Coil bar on the support leg protruding from the lifting cylinder The upper end of the coil spring is provided on the lower surface of the spring support, the lower end of the coil spring is engaged with the upper end of the lifting cylinder, and a plurality of base plates made of a pair of left and right elongated plates are provided, A pair of elongate plates having an inner lower surface rotatably attached to the upper end of the support arm, and a push pin having a convex arc surface formed at the lower end is disposed on the lower surface of the elongate plate and perpendicular to the position corresponding to each spring receiver. The lower end of the push pin is placed on the upper surface of each spring support, and the outer support legs having a height difference are placed on the outer lower surface of each elongate plate at intervals in the front-to-rear direction and pivotally attached. The plurality of outer support legs are connected by a third connecting member, and at least the ends of the pair of left and right fourth connecting members are rotatably attached to the third connecting member and the support column or the lifting cylinder, respectively. Next-stage elongated plates are connected to the inner and outer lower surfaces of each elongated plate. 5 Each end of the connecting member is rotatably attached, and the inner end surface of each of the elongated plates is cut outward as it goes downward, and the upper edges of the inner ends of each pair of the elongated plates are brought into line contact. It is characterized by this.
[0005]
Only the casters touch the floor when the elongated plate is folded. In the middle of developing the elongated plate, the support leg is lowered by the push pin, touches the floor with the caster, and when the elongated plate is further deployed, the support leg is in contact with the floor so that the lifting cylinder and the caster integrated therewith rise. To do. In addition, the third connecting member for connecting a plurality of outer support legs having different heights and the support column or the lifting cylinder are connected by the fourth connecting member, and the elongated plates at the next stage are connected by the fifth connecting member so as to be rotatable. As a result, multiple steps of the platform can be easily and reliably closed and opened with a single up / down rotation.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the present invention is for a child facility such as a kindergarten or a nursery school, and its structure will be described in detail based on the embodiment shown in FIGS. 1 to 8 of the accompanying drawings. As shown in FIGS. 1 and 2, three sets of floor boards 10 are provided with a pair of left and right elongated plates 10 'and 10'. As shown in FIGS. 1, 5, and 8, angles 10c and 10c are attached around the back surface of each of the elongated plates 10 'and 10', and a rectangular tube 10d is attached inward, and each of the elongated plates 10 'and the inner end face of each angle 10c. As it goes down 10a, it cuts about 45 degrees outward and makes the inner edge upper edges 10b of the pair of elongated plates 10 ', 10' line-contact. Hinges 17a, 17b, 17c, 17d, and 17e are attached to the inner side of the back surface of each square tube 10d, and a push pin 11 is vertically projected slightly outward from the front and rear hinges 17a and 17e. The lower end is formed in a hemispherical shape or a disk, or a ball bearing or a roller bearing is attached to the lower end, that is, a convex arc surface 11 'is formed at the lower end of the push pin 11, and each elongated plate 10' is supported by the support structures X, Y , Z and the outer support leg 12 made of metal pipe.
[0007]
The support structure X is formed by connecting a pair of right and left elevating cylinders 1, 1 and cylindrical columns 1 ′, 1 ′ standing upright with a horizontal first connection member 2, 2 ′ at an interval. A pair of support arms 3 and 3 and a pair of support arms 3 ′ and 3 ′ are integrally protruded upward and vertically in the vicinity of both ends of the members 2 and 2 ′. The upper ends of the support arms 3 and 3 'are rotatably attached to the rectangular tube 10d of the elongated plate 10' via the hinges 17a, 17b, 17c, 17d and 17e and the pins 18. A supporting leg 6 is vertically passed through each lifting cylinder 1, and a spring receiver 7 having a smooth top surface and a circular plane is attached horizontally to the head of the supporting leg 6, and the lifting cylinder 1 is attached to the bottom of each supporting leg 6. A large-diameter floor contact cap 8 is attached, and a coil spring 9 is wound around a support leg portion 6 ′ protruding from each lifting cylinder 1, and the upper end of the coil spring 9 is locked to the spring support 7 and the lower end is locked to the upper end of the lifting cylinder 1. Then, the lower end of the push pin 11 is brought into contact with the upper surface of the spring receiver 7. The support structure Z is different in height from the support structure X and the outer support legs 12 but has the same structure in principle. The support structure Y has a structure of the lifting cylinder 1 portion from the support structures X and Z. The structure of the support 1 'and the support arm 3' is removed, and the elongated plate 10 'is rotatably supported in the same manner as the support structures X and Z.
[0008]
As shown in FIGS. 2 and 5, a horizontal second connecting member 4 is fixedly connected to the left and right elevating cylinders 1 and 1 and the supports 1 ', 1', and 1 'having a height difference in the front-rear direction. Then, hinges 19, 19 are attached horizontally and outwardly in front of and behind each second connecting member 4, and casters 5 are attached to each hinge 19. In the present embodiment, the height positions of the upper ends of the first connecting members 2 and 2 'and the supporting arms 3 and 3' located on the lower surface of the front elongated plate 10 'are the same, and the rear elongated plate 10' has the same height. The height positions of the upper ends of the first connecting members 2, 2 'and the supporting arms 3, 3' located on the lower surface are the same. On the lower surface of the middle elongated plate 10 ', a pair of support pillars 1' are erected in the center and supported as described above.
[0009]
Four outer support legs 12 are formed on the left and right sides, respectively, at the front of the front elongate plate 10 ', behind the rear elongate plate 10', and before and after the middle elongate plate 10 'via angles 10c and hinges 20, respectively. The outer support leg 12 is rotatably attached, and the third connecting member 13 is fixed to the lower side of the outer support legs 12, 12, 12 having a difference in height between left and right.
[0010]
As shown in FIGS. 1 and 3, angles 10c, hinges 21 and pins 22 are provided inward and outward of each of the front and middle elongated plates 10 'and 10' and the middle and rear elongated plates 10 'and 10'. The opposite ends of the fifth connection members 15 and 15 having a square shape are rotatably attached to each other, and the pair of left and right third connection members 13 and the middle column 1 'are connected to hinges 23 and 23', pins 24 and 24, respectively. ′ Is connected to the fourth connecting member 14 having a square shape so as to be freely rotatable. It should be noted that two right and left fourth connecting members 14 may be prepared and connected to the front and rear elevating cylinders 1 and 1 by the above means so as to be rotatable, and the left and right third connecting members 13 and 13 and the column 1 '. Or the 4th connection material 14 which connects the raising / lowering cylinder 1 may be at least one by one.
[0011]
Next, the operation of the embodiment of the present invention will be described. When the floor plate 10 of each stage is folded, the elongated plates 10 'and 10' are erected as shown in FIGS. 4 and 6, and each coil spring 9 is extended. Each support leg 6 is pulled up, and each floor contact cap 8 is locked to each lift cylinder 1 so that the support leg 6 is in the upper limit position, and only each caster 5 is in contact with the floor. Here, since the multi-purpose bed of the present invention is not touched by the support leg 6, it can be easily pushed and moved to a desired position, and the operation can be made extremely quick.
[0012]
Next, if the third connecting member 13 is gripped and rotated downward, the respective stages are rotatably connected by the fifth connecting members 15 and 15 as shown in FIG. The elongated plate 10 ′ rotates around the pin 18, the convex arc surface 11 ′ of the push pin 11 contacts the spring receiver 7, and then the spring receiver 7 is pushed down vertically while sliding on the surface of the spring receiver 7. As a result, the support leg 6 integrated with the spring receiver 7 descends vertically, the coil spring 9 begins to contract, and the floor contact cap 8 and the caster 5 attached to the support leg 6 eventually touch the floor.
[0013]
When the elongate plate 10 'is further lowered, the floor contact cap 8 is in contact with the floor, so that the support arms 3, 3', the first connecting members 2, 2 ', and the lifting cylinder 1 are shown in FIG. The column 1 'and the caster 5 are pulled up vertically, and the coil spring 9 further contracts. The elongated plate 10 'rotates about the ascending pin 18 and expands horizontally. Similarly, the other elongated plate 10 'is developed. At the time of expansion, the inner edges 10b and 10b of the elongated plates 10 'and 10' are in line contact with each other as shown in FIG. Further, in the process of changing from the folded state to the halfway state and further to the unfolded state, each outer support leg 12 is connected by the third connecting member 13 and the third connecting member 13 and the middle column 1 'are the fourth. Each of the outer support legs 12 is unfolded at the same time and touches the floor. Here, the caster 1 leaves the floor, and only the support leg 6 and the outer support leg 12 touch the floor, and the stability is good.
[0014]
Next, in order to fold the floor plate 10, the operation reverse to the above may be performed. When the outer end of the third connecting member 13 or any one of the elongated plates 10 'is lifted, the inner end face 10a of the elongated plates 10', 10 '. If 10a is vertical, the inner end surfaces 10a and 10a try to collide with each other. However, as shown in FIG. 1, the inner end is cut off, so that one inner end smoothly pushes into the other cut portion. The push pin 11 is tilted while sliding on the spring support 7, the coil spring 9 is extended, and the lifting cylinder 1, the column 1 ′, the caster 5, the support arms 3, 3 ′ and the pin 18 are vertically lowered, The elongated plate 10 ′ is rotated upward about the descending pin 18. When the caster 5 is grounded and the elongate plate 10 'is lifted halfway, the push pin 11 is separated from the upper surface of the spring receiver 7, and the supporting leg 6 is pulled up vertically by the extending coil spring 9, and the pin that has stopped after this is stopped. The elongated plate 10 ′ rotates around the center 18 and eventually stands up completely and is folded. At this time, as shown in FIG. 6, the flooring cap 8 of the support leg 6 leaves the floor, the flooring cap 8 is locked to the lower end of the elevating cylinder 1, and the support leg 6 stops without further rising. Yes, only casters 5, 5 touch the floor and are easy to move. In this embodiment, the base plates 10, 10, 10 have a plurality of stages, specifically, three stages, but the next stages are rotatably connected by the fifth connecting member 15 and the columns 1 ′, 1 ′, 1 ′ support arms 3 ′, 3 ′, 3 ′ are also provided so that each elongated plate 10 ′ can be freely rotated, and each elongated plate 10 ′ can be reliably and smoothly folded without deformation. A plurality of outer support legs 12, specifically, four outer support legs 12, 12, 12, 12 are connected by a third connecting member 13, and the third connecting member 13 is connected to the column 1 ′ by a fourth connecting member 14. Therefore, even if one person can quickly close and open the multi-stage floor boards 10, 10, and 10 by one raising / lowering operation.
[0015]
【The invention's effect】
According to the present invention, even though it is a stepped floor board, even one person can quickly and surely and easily expand and fold it, and when it is unfolded, it is stable and can be moved very easily when folded. it can.
[Brief description of the drawings]
FIG. 1 is a front view showing a developed state of the present invention.
FIG. 2 is a partially cutaway plan view of the same.
FIG. 3 is a side view of the above.
FIG. 4 is a front view showing a folded state of the present invention.
FIG. 5 is a side view of the above.
FIG. 6 is a partially enlarged cross-sectional view in which some members are omitted in the folded state.
FIG. 7 is a partial enlarged cross-sectional view in which a part of the member showing folding is omitted.
FIG. 8 is a partially enlarged cross-sectional view in which some members are omitted in the developed state of the present invention.
FIG. 9 is a perspective view showing a use state of a conventional example.
FIG. 10 is a perspective view showing the storage state of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lifting cylinder 1 'Support | pillar 2 1st connection material 3 Support arm 4 2nd connection material 5 Caster 6 Support leg 6' Support leg part 7 Spring support 8 Floor contact cap 9 Coil spring 10 Platform board 10 'Elongated board 10a Inner end surface 10b On inner end Edge 11 Push pin 11 'Convex arc surface 12 Outer support leg 13 Third connecting member 14 Fourth connecting member 15 Fifth connecting member

Claims (1)

A plurality of pairs of left and right lifting cylinders and columns that stand vertically are provided, and the plurality of pairs of lifting cylinders and columns are arranged side by side with a difference in height in the front-rear direction. And the struts are spaced apart from each other at the center and connected by a horizontal first connecting member, and a pair of support arms projecting integrally and upward in the vicinity of both ends of the first connecting member. The lower cylinders and the columns having lower ends are connected by horizontal second connecting members, and a pair of casters are attached to the front and rear of each second connecting member, and the height difference between the upper and lower cylinders having the height difference. Each of the supporting legs is provided with a spring support with a smooth upper surface provided at the head of each supporting leg, and a floor contact cap having a diameter larger than that of each of the lifting cylinders is attached to the bottom of each of the lifting cylinders. Coil bar on the support leg protruding from The upper end of the coil spring is provided on the lower surface of the spring support, the lower end of the coil spring is engaged with the upper end of the lifting cylinder, and a plurality of base plates made of a pair of left and right elongated plates are provided, A pair of elongate plates having an inner lower surface rotatably attached to the upper end of the support arm, and a push pin having a convex arc surface formed at the lower end is disposed on the lower surface of the elongate plate and perpendicular to the position corresponding to each spring receiver. The lower end of the push pin is placed on the upper surface of each spring support, and the outer support legs having a height difference are placed on the outer lower surface of each elongate plate at intervals in the front-to-rear direction and pivotally attached. The plurality of outer support legs are connected by a third connecting member, and at least the ends of the pair of left and right fourth connecting members are rotatably attached to the third connecting member and the support column or the lifting cylinder, respectively. Next-stage elongated plates are connected to the inner and outer lower surfaces of each elongated plate. 5 Each end of the connecting member is rotatably attached, and the inner end surface of each of the elongated plates is cut outward as it goes downward, and the upper edges of the inner ends of each pair of the elongated plates are brought into line contact. A multi-purpose hinadan characterized by that.

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