JPH0334451Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a folding device for a platform that connects a front platform and a rear platform at an intermediate portion and can be folded vertically.

[Problems that conventional technology and ideas try to solve]

This type of vertically foldable stand is well known for use on stages in schools, beds for home use, and the like. If these are unfolded on the floor and not folded toward the wall, the angle between the front platform and the floor is at a non-right angle, so it looks unsightly and cannot be used as a building wall. . Therefore, this is extremely inconvenient when it is desired to use the entire room in the building.

Therefore, an object of the present invention is to provide a folding device that can solve the above-mentioned disadvantages.

[Means to solve the problem]

In the present invention, the front stand and the rear stand are pivotally connected via an intermediate connecting piece, and an intermediate leg with a rotating arm pivotally connected to the intermediate connecting piece is suspended from the intermediate connecting piece. Then, the rotating arm is raised up by winding a wire using a wire winding means such as a winch, and the wheels of the rotating arm are pressed against the floor, and the lower end of the front leg connected to the front stand is raised. A folding device for folding a front stand and a rear stand toward a wall side while pulling the front side towards the rear; the front stand consists of a floor plate and a lower underframe, and the front end of the floor plate and the lower underframe are folded. The front end of the front leg is pivotally connected to the upper end of the front leg, and a resilient member such as a coil spring that pulls the floorboard toward the wall is connected to the rear end of the floorboard and the upper end of the intermediate leg. A regulating member is provided at the upper end of the intermediate leg to maintain the upper plane of the floor plate at a predetermined angle with respect to the floor by coming into contact with the floor plate in the folded state.

[Effect]

In the unfolded state, the floorboard is held on the lower frame, and from this state, if the front legs are pulled rearward by the winding means, the front and rear platforms can be folded toward the wall. Can be folded. In this case, the rear end of the lower underframe is pivotally connected to the connecting piece, but the rear end of the floorboard is not pivotally connected to the connecting piece and is pulled to one side by the elastic member, so the floorboard The rear end portion and the rear end portion of the lower underframe can swing in a separated state.

Thus, in the folded state, the rear end of the floorboard is pulled rearward by the elastic member, and the front end is held in that position by the winding means,
Furthermore, since the floorboard is in contact with the regulating member, its folded state is reliably maintained, and the angle between the upper plane of the floorboard and the floor surface can be maintained at a predetermined angle.

〔Example〕

Embodiments of the present invention will be explained in detail based on the drawings.

In FIG. 1, reference numeral 1 denotes a stand that can be folded vertically, and shows a state in which it is folded toward a wall surface 5. This table consists of a front table 2 and a rear table 3.
The front stand 2 and the rear stand 3 have a pair of intermediate connecting parts 4,
4, and each is bent in a substantially parallel manner. The front stand 2 includes a floor plate 2a and a lower frame 2.
b, and when the platform 1 is laid out horizontally in the shape of the floor surface G, the entire floor plate 2a is covered by the lower frame 2.
It is placed on the upper side of b.

As shown in FIG. 7, the front end of the front stand 2 is attached to a front leg 6, and the rear end of the rear stand 3 is attached to a rear leg 7 which is erected and fixed to a wall surface 5. Also,
The intermediate connecting portion 4 includes an intermediate connecting piece 4a and the connecting piece 4.
It consists of an intermediate leg 4b that is vertically installed on the intermediate leg 4b, and is pivotably attached to the intermediate leg 4b. In addition, between the intermediate connecting parts 4, 4, the horizontal member 12b...
connected by.

As shown in FIGS. 3, 4, and 5, the front end of the floor plate 2a of the front stand 2 is supported by the upper end of the front leg 6. It is rotatably connected by a support pin 9 via a bracket 10 fixed to the support pin 9. Similarly, the lower frame 2b of the front stand 2 is rotatably connected to the support pin 9 via another bracket 10 fixed to its front end. In addition, the lower underframe 2
The rear end portion of b is rotatably supported by a connecting piece of the intermediate connecting portion 4 by a connecting pin 11 (FIG. 7). A horizontal member 12... is attached to the back surface of the floor plate 2a, and when the platform 1 is deployed, the floor plate 2a is attached to the horizontal member 12.
... is placed on the upper side of the lower frame 2b.
The above bracket 1 attached to the back side of the floorboard 2a
0 is specifically fixed to a vertical member 13 provided inside the floorboard 2a.

As shown in FIG. 2, the intermediate connecting portion 4 includes a regulating member 14 that holds the upper plane P of the floor plate 2a in the folded state at a predetermined angle θ with respect to the floor surface G, and a regulating member 14 that holds the upper plane P of the floor plate 2a in the folded state at a predetermined angle θ. A resilient member 15 made of a coil spring or the like that provides a resilient force for attracting the rear end portion rearward is attached to each of them. In the illustrated embodiment, the regulating member 14 includes a rod 14a having a predetermined length and a threaded portion, and an abutment piece 14b attached to the rod 14a, and the rod 14a is fixed to the intermediate leg 4b. Natsu 16,
16 so that it can be screwed forward and backward in the front and back direction of the stand 1. Moreover, corresponding to the above-mentioned regulating member 14,
A receiving member 18 that comes into contact with the regulating member 14 when folded
is provided on the floorboard 2a. This support member 18 is fixed to the back surface of the floorboard 2a via the horizontal members 12, and specifically has a substantially U-shaped cross-sectional shape provided so as to span the horizontal members 12, 12. The case of a member will be exemplified. During folding, the floor plate 2a swings as shown by the arrow in the figure, and after folding, the support member 18 comes into contact with the regulating member 14 as shown by the imaginary line in the figure.

Next, the above elastic member 15 will be explained.
The mounting position of one end thereof is the upper end of the intermediate leg 4b of the intermediate connecting portion 4, and the above-mentioned regulating member 14
The following example shows the case where it is installed in a lower position. The other end of the resilient member 15 is attached to the back side of the floorboard 2a, and in the illustrated embodiment is supported by a connecting pin 19 via the receiving member 18.

Next, a wire winding means such as a winch used when unfolding or folding the stand 1 will be explained. As shown in FIG. 6, the winding means 20, 20 are disposed on the rear end side of the table 1 and on both sides of the table 1. The wire W whose one end is fixed to the winding means 20 is passed through the through hole 22 of the wall body 21 and let out, and after being bent forward by a pulley 23 disposed on the rear end side of the rear stand 3. , is hung on a pulley 23 provided on the front end side of the front stand 2 and turned back, and its end is fixed to the rotating arm 8. Specifically, this end portion is attached to the tip 8a of the rotating arm 8 via a connecting piece 24. In addition, the connecting piece 24
A tension adjustment member such as a turnbuckle may be provided between the wire W and the wire W to prevent the wire W from loosening.

A pressing means 25 is disposed on the rear stand 3, and the pressing means 25 includes a pressing member 27 having a roller 26 at its tip, and a gas spring 29 having a telescopic rod 28 pivotally connected to the pressing member 27. , consists of. Specifically, the pressing member 27 and the gas spring 29 are attached to a horizontal member 12a that connects the rear legs 7, and are swingable in the direction of the arrow shown in the figure. That is, as shown in FIG. 9, during the folding operation of the table 1, the front legs 6...the horizontal member 12 connecting the lower portions moves in the direction of the arrow in the figure, comes into pressure contact with the roller 26, and is pressed. The entire means 25 is swung to the position shown in phantom lines. Therefore, at least in the folded state, the rod 2 of the gas spring 29 is always connected to the front leg 6 through the transverse member 12.
A pressing force in the deployment direction is applied by the reaction force of 8. Note that, instead of the gas spring 29, a resilient member such as a coil spring may be used.

To explain the folding operation of the table 1 with reference to FIGS. 7, 8, and 1, first, the winding means 20 is activated from the state shown in FIG. 8a in the direction of arrow A,
When the rotating arm 8 is swung counterclockwise, as shown in FIG. The middle part of platform 1 is lifted,
The wheel 8b of the rotating arm 8 moves in the direction of the arrow A,
Eventually, the rotating arm 8 hits the stopper 30 and stops. As the wire W is further wound, the front leg 6 is pulled rearward and the wheel 8b rises, and the front end of the front stand 2 is supported by the wheel 6a provided on the front leg 6 side. , the stand 1 is folded vertically, and finally the front stand 2 and the rear stand 3 are in a folded state. By the way, during the folding process, the floor plate 2a of the front stand 2 does not touch the regulating member 1.
4, the member 14 prevents the rocking from then on, and therefore, only the lower frame 2b, which is no longer in contact with the floorboard 2a, moves separately in the direction of arrow B (see Fig. 1). oscillate. It should be noted that during this operation of folding and unfolding, the front leg 6 and the intermediate leg 4b
maintains a vertical position.

In the folded state as shown in FIG. 1, the rear end of the floor plate 2a is pulled rearward by the resilient member 15, so that the floor plate 2a and the regulating member 14 are They are held in contact via the material 18. That is, the angle θ between the floor surface G and the upper plane P of the floor plate 2a is determined by the distance H from the tip of the regulating member 14 to the center of the intermediate connecting portion 4 (see FIG. 2).

In addition, in the folded state, the rear end, that is, the upper end of the floorboard 2a is pulled toward the wall surface 5, so that the front end, that is, the lower end of the floorboard 2a is pulled toward the wall surface 5 by the reaction. This means that it is being pushed in the opposite direction. Therefore, when the wire W of the winding means 20 is loosened from this folded state, the lower end of the floor plate 2a will naturally expand, and it can be easily brought into the unfolded state. Note that, unlike the front stand 2, the floor stand 3a and lower frame 3b of the rear stand 3 are integrally connected. Reference numeral 32 designates an anchor that is implanted in the wall surface 5 to secure the rear leg 7. As for the resilient member 15, it is preferable to use a fluid pressure cylinder or the like. front leg 6
A curtain plate 33 may be provided to block the view of the rear side from the curtain plate 33.

The intermediate connecting portion 4, the resilient member 15, the regulating member 14, and the like provided thereon may be provided at symmetrical positions on both sides of the base 1, or it is preferable to provide a plurality of them.

[Effect of idea]

Since the present invention is constructed as described above, it produces the following effects.

During the folding operation, the regulating member 14 is brought into contact with the floorboard 2a to prevent it from swinging beyond a certain level, and at the same time, the resilient member 15 is used to attract and hold the member 14.
The angle θ that the floorboard 2a forms with the floor surface G of the building can be set to a desired angle, such as a right angle. In particular, by making the angle θ a right angle, the front platform 2 can be made into an erected wall that is almost the same in terms of appearance and function as the wall of the building, which can improve the effective use of the facility. This has practical effects.

In addition, in the folded state, the rear end (that is, the upper end) of the floorboard 2a is pulled toward the wall surface 5 by the resilient member 15, so that the front end (that is, the lower end) of the floorboard 2a due to the reaction, the wall surface 5
will be pushed in the opposite direction. Therefore,
From this folded state, the winding wire W of the winding means 20 is
When loosened, the lower end of the floorboard 2a will naturally expand, allowing it to be easily unfolded.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional side view showing an embodiment of the present invention;
Figure 2 is an enlarged sectional view of the main part, Figure 3 is E in Figure 1.
4 is an enlarged cross-sectional view of the main part of the front stand in the unfolded state; FIG. 5 is a cross-sectional view of FIG. 4;
Fig. 6 is a partially cutaway plan view of the stand in the unfolded state, Fig. 7 is a cross-sectional side view in the unfolded state, Fig. 8 is a cross-sectional side view in the middle of unfolding, and Fig. 9 is a cross-sectional side view in the unfolded state.
The figure is an explanatory diagram of the operation of the pressing means. 2... Front stand, 2a... Floor plate, 2b... Lower underframe, 3... Rear stand, 4a... Intermediate connection piece, 4b...
...Intermediate leg, 5...Wall surface, 6...Front leg, 8...Rotating arm, 8b...Wheel, 14...Regulation member, 15...
... Resilient member, 20 ... Wire winding means, W ... Yaiya, P ... Upper plane, G ... Floor surface, θ ... Angle.

Claims (1)

[Claims for Utility Model Registration] The front stand 2 and the rear stand 3 are pivotally connected via an intermediate connecting piece 4a, and the intermediate connecting piece 4a
, an intermediate leg 4b to which a rotating arm 8 is pivotably attached
vertically, the rotating arm 8 is raised by winding up the wire W by a wire winding means 20 such as a winch, the wheels 8b of the rotating arm 8 are pressed against the floor G, and the front stand 2 This is a folding device that folds a front stand 2 and a rear stand 3 toward a wall surface 5 side while pulling the lower ends of front legs 6 connected to the front leg 6 rearward, the front stand 2 being connected to a floor plate 2a. The front end of the floor plate 2a and the front end of the lower underframe 2b are pivotally connected to the upper end of the front leg 6, and the rear end of the lower underframe 2b is pivotably connected to the upper end of the front leg 6. is pivotably connected to the intermediate connecting piece 4a, and the floor plate 2
Resilient member 1 such as a coil spring that pulls a toward the wall surface 5 side
5 is interposed between the rear end portion of the floor plate 2a and the upper end portion of the intermediate leg 4b, and contacts the floor plate 2a in the folded state, thereby making the upper plane P of the floor plate 2a relative to the floor surface G. A folding device characterized in that a regulating member 14 for holding the intermediate leg 4b at a predetermined angle is provided at the upper end portion of the intermediate leg 4b.