JP6524027B2 - Folding storage and holding device for folding and storing type stage - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a foldable storage holding device for a foldable storage type stage which is stored in a storehouse in a state of being folded up in a recess in a wall.

Conventionally, as a stage installed in a gymnasium, various halls, etc., it can be seen that the stage can be folded and stored so as to effectively use the place when not in use.
For example, as disclosed in Patent Document 1, this folded and stored stage supports the horizontal state of the stage board by the elevator legs and the installation legs at both ends of the central connecting portion which bisects the stage board, and the elevator legs Because the stage board is heavy, the lifting board is lifted using a winch device to fold and deform the stage board.
And, in many fold-up and storage-type stages, as disclosed in Patent Document 2, one of the installation footings is fixed to the floor, and in the folded up state, it fits snugly in a recessed storage in the wall. It is

  However, when a winch device is used as in the case of the foldable storage type stage disclosed in Patent Document 1, the equipment cost is high, the maintenance thereof is also required, and maintenance is troublesome, requiring time and effort. In the foldable storage type stage disclosed in the above, on the bundle pole of the stage, a non-loaded compression coil spring is externally fitted in the staged state of the stage plate below the proximal pivot of the stage plate, and the compression coil spring A proximal end of a spring supporting rod provided on the proximal side with a spring holder for holding the one end in a pivoting manner in the elevation direction of the stage plate, and abut on the other end of the non-loaded compression coil spring; A spring retainer for loosely fitting the tip end side of the spring support rod is configured to be fixed to an appropriate position of the stage plate.

With this configuration, when the stage plate is folded and deformed, the compression coil spring in the compressed state is urged in the folding direction of the stage plate when the stage plate is extended , and the biasing force of the compression coil spring causes the heavy stage plate to be folded. In order to assist the lifting force, the stage is smoothly folded and deformed with a light force, while in the case of extending the stage plate, it is gradually compressed against the biasing force of the compression coil spring, The stage plate can be safely transformed into the stage without causing the stage setting surface to rapidly extend and causing an impact on the stage setting surface.

Utility model registration No. 2515974 Patent No. 5860826 gazette

By the way, in a foldable storage type stage (see Patent Document 1) using a winch device, the fold state of the lift plate is maintained by winding the wire in the fold state of the lift plate, and the winch device is operated. The stage plate can not be extended unless the wire is pulled out, however, in the folded and stored stage of Patent Document 2, it is not configured to forcibly hold the folded state of the stage plate with the winch device of Patent Document 1 Although it is necessary at the time of initial movement to have a considerable force against the biasing force of the compression coil spring, it has the problem that it can be extended freely without use for the stage plate, and its safety is not sufficient.
Therefore, it is an object of the present invention to provide a folding storage holding device for a folding storage type stage which can not freely extend the stage plate in the folding state.

In view of the above problems, according to the present invention, the foldable storage and holding device of the foldable storage type stage of the present invention comprises: a front bundle pillar uprightly fixed on the inner floor surface of a storage cabinet recessed in a wall; The stage plate is horizontally connected by pivotally connecting the base end of the front and rear pair of stage plates to each of the rear bundle pillars arranged so as to be able to move back and forth so that they can bend back and forth. Folding the stage board in a foldable storage type stage where the stage board in the extended state is bent at its connection part to be folded and deformed into a two-fold stage board by turning it upside down. A locking means is provided for restraining movement of the rear bundle pole in the state.
The locking means is, in the folded state, at the fixed side selected from among the floor surface in the storage, the wall surface in the storage, and the front component members of the foldable storage type stage arranged in front of the connecting portion, It is characterized in that a rear component of the folding stage is disposed at the rear of the connecting portion so as to be able to be engaged and disengaged via a fastening means.
The securing means is capable of engaging and disengaging with the projecting piece projecting toward the rear component from the fixed side suitable place and the notch provided in the direction orthogonal to the longitudinal direction of the projecting element in the folded state. And an engaging element provided on the rear component.
The engaging element is rotatably provided so as to be able to be engaged with and disengaged from the cut, and the support shaft of the engaging element is a rear component member in the folded state of the key handle capable of rotating the support shaft. It is characterized by being provided so as to be able to be disengaged from the outside.
In the vicinity of the engaging element in the rear component, in the folded state, a receiving plate formed with a separate cut in which the engaging element can be engaged and disengaged is provided in parallel with the projecting piece.
In addition, in the above-mentioned erected state, a car stop having a height allowing the wheel to get over is laid behind the wheel of the rear bundle pole.

  In short, according to the present invention, there are provided a front bundle pole uprightly fixed on the inner floor of a storage cabinet recessed in a wall, and a rear bundle pole provided with wheels at the rear of the front bundle pole so as to be movable back and forth. , The base plate of the front and rear pair of stage boards can be freely pivoted, and by connecting the stage boards so that it can bend and stretch, the stage boards can be transformed into a stage by horizontally extending them, and the stage boards in an extended state In the foldable storage type stage that bends at the connecting part and folds the half-folded stage plate back to back, a locking means is provided to prevent movement of the rear bundle pillar in the folded-up state of the stage plate. Because the stage board can not be extended freely, it is possible to prevent mischief and improve the safety when folding and storing the folding stage.

  The locking means is, in the folded state, at the fixed side selected from among the floor surface in the storage, the wall surface in the storage, and the front component members of the foldable storage type stage arranged in front of the connecting portion, Since the rear components of the folded and stored type stage arranged behind the connecting portion are provided so as to be able to be engaged and disengaged via the anchoring means, the floor surface inside the fixed storage and the wall surface within the storage by the engagement of the anchoring means And the movable-side rear component can be anchored to the fixed-side suitable place selected from among the front-component members, whereby the movement of the rear bundle pillar in the erected state of the stage plate can be suppressed, and the engagement by the anchoring means The rear bundle pole can be moved to extend the stage plate by releasing the rear cover from the fixed side suitable position.

  The securing means is capable of engaging and disengaging with the projecting piece projecting toward the rear component from the fixed side suitable place and the notch provided in the direction orthogonal to the longitudinal direction of the projecting element in the folded state. Since it consists of an engaging element provided on the rear component, when the engaging element is engaged with the notch, the rear component can not move rearward via the engaging element, so that the movement of the rear bundle pole can be suppressed, and from the incision When the engaging element is released to release the engagement, the movement restraint of the rear bundle pole is released, and the stage plate can be extended.

  The engaging element is rotatably provided so as to be able to be engaged with and disengaged from the cut, and the support shaft of the engaging element is a rear component member in the folded state of the key handle capable of rotating the support shaft. Since the key handle is engaged with the pivot of the key handle, the key handle and the engager can be linked to allow the engager to be pivotably operated with respect to the cut. Since the operation of the engaging element can be disabled by the disengagement from the support shaft, the holding and release of the stage plate in the folded state can be managed by engagement and disengagement with the support shaft of the key handle.

  In the vicinity of the engaging element in the rear component, in the folded state, a receiving plate formed with a separate cut in which the engaging element can be engaged and disengaged is provided in parallel with the projecting piece. By engaging the engaging element in an orthogonal manner in each cut of the parallel projecting piece and the receiving plate, even if an external force acts on the engaging element in such a state, this external force is dispersed at two places where the engaging element engages. Can be made difficult to bend, and its strength can be improved.

  In the above erected state, a car stop having a height allowing the wheel to ride is laid behind the wheel of the rear bundle pole, so when the wheel crosses the car stop at the time of folding deformation of the stage board, the stage board is erected The deformation can be completed, and a rear wheel stop prevents the wheel from moving backwards to hold the wheel in place, allowing accurate positioning of the wheel in the folded state, and for the rear bundle pole The practical effect is such that the lock can be reliably engaged to prevent movement, that is, the engaging element can be reliably engaged with the notch of the projection.

It is a side view of a stage storage type stage. It is the partially broken plan view which abbreviate | omitted the stage board. It is AA sectional drawing of FIG. It is a BB sectional view of FIG. It is CC sectional drawing of FIG. It is a side view of the stage which shows a folded up storage state. It is a partially omitted front view of FIG. It is a top view of FIG. It is DD sectional drawing of FIG.

An embodiment of the present invention will be described below based on the drawings.
The foldable storage type stage 1 shown in the figure is provided so as to be foldable and storable in the storage box S recessed in the wall W of the stage setting room R, and is provided with anchor bolts on the inner floor surface f of the storage box S A pair of front and rear stage plates 4 for the front bundle pillar 2 fixed upright and the rear bundle pillar 3 oppositely arranged with wheels 3 b movably back and forth at the same height to the rear of the front bundle pillar 2 By pivoting the base end of 5 and 5 freely and connecting the tips of the stage plates 4 and 5 so that they can bend and stretch, the stage plates 4 and 5 are horizontally extended to be transformed into a stage, and in an extended state The stage plates 4 and 5 are bent at the connecting portions 6 to fold and fold the half-folded stage plates 4 and 5 in reverse.

  As shown in FIG. 2, the front and rear bundle pillars 2 and 3 (hereinafter, also referred to as bundle pillars 2 and 3) are vertically arranged at predetermined intervals in the lateral (left and right) direction, and correspond to front and rear The bundle pillars 2 and 3 to be arranged are arranged in parallel in the left-right direction (displacement), and the adjacent front bundle pillars 2 and the rear bundle pillars 3 are connected by upper, lower, and lower tie straps 7, 7a, 7b, The ties 7, 7a, 7b are integral with the front and rear bundles 2, 3 (see FIGS. 3, 5).

Further, eight middle bundle pillars 8 are arranged upright on the front of the rear bundle pillar 3 in the middle of the bundle pillars 2 and 3, and the adjacent middle bundle pillars 8 are tied up and down at the upper and lower portions 9, They are linked by 9a (see FIGS. 2 and 4).
The lower binding tie 7b of the front bundle pole 2 and the lower binding tie 9a of the middle bundle pole 8 and the lower binding tie 7b of the rear bundle pole 3 and the lower binding tie 9a of the intermediate bundle pole 8 are separated by a predetermined distance (each Each of the bundle poles 2, 3 and 8 is pivotally connected by eight connecting rods 10).
In addition, the continuous rod 10a is constructed in parallel in the front and rear in two parallel connecting rods 10 parallel in the front and rear of the left and right end side.

  Stage plates 4 and 5 are horizontally long rectangular floor plates 11 and 12 (indicated by a two-dot chain line in FIG. 2 for convenience of explanation) and joists arranged in parallel at predetermined intervals in the front and rear direction of the floor plates 11 and 12 It consists of 13 (it omits for convenience of explanation in FIG. 2), and the large pulls 14 and 15 which were orthogonally arranged to this joist 13 and were arranged in parallel at predetermined intervals in the lateral direction.

  Although the floor plate 12 (hereinafter also referred to as the rear floor plate 12) has a depth (longitudinal direction length) longer than that of the floor plate 11 (hereinafter also referred to as the front floor plate 11), each floor plate 11 The width of 12 is set to the same length.

  The joists 13 are interposed and fixed between the floor boards 11, 12 and the large pulls 14, 15. The total length of the joists 13 at the lower part of the floor board 11 is set to the same length as the distance between the bundle poles 2 at the left and right ends. The total length of the joists 13 is set to be the same as the distance between the bundle poles 3 at the left and right ends.

  The large pulls 14 and 15 are pivotably attached to the upper portions of the bundle poles 2 and 3 so that they can pivot from horizontal to vertical or vice versa. Set the rear large pull 15 (hereinafter also referred to as rear large pull 15) pivoted to the rear bundle pole 3 longer than the pivoted front large pull 14 (hereinafter also referred to as front large pull 14) There is.

Thereby, in the horizontal state of the front and rear large pulls 14, 15, they project at right angles to the upper portions of the inward surfaces 2a, 3a of the front and rear bundle columns 2, 3, and in the vertical state, It stands upright on the upper end (see FIGS. 2, 3, 5, 6).
Then, the tip of the front large pull 14 and the tip end portion of the rear large pull 15 corresponding to the tip are connected so as to be bendable and extendable in parallel with each other.

  The above-described tip end portion of the rear large pull 15 is pivotally attached to the front end of a bracket 8a having a pair of tongues projecting backward from the upper end upper left and right of the middle bundle pillar 8, and the middle bundle pillar 8 between the left and right tongues of the bracket 8a. The intermediate bundle pillar 8 is rotatable from the tip end of the rear large pull 15 which is the middle of the bundle pillars 2 and 3 in the horizontal state of the rear large pull 15. It projects downward at a right angle to be landed, and is connected to the rear large pull 15 via the bracket 8 a so as to be parallel to the rear large pull 15 in the upright state of the rear large pull 15.

Further, in the intermediate bundle pillars 8 adjacent to each other, the bracket 8a at the upper stage thereof is connected with the tie-through 9 and the lower stage is connected with the tie-through 9a (see FIG. 4).
The front large pull 14 is pivotally connected to a bracket 16 whose tip end is horizontally projected on the surface of the upper tie-in between the middle bundle columns 8 and opposed to the front bundle columns 2 (see FIGS. 2 and 4).

  Here, the bracket 16, the upper end of the middle bundle pillar 8 (bracket 8a), and the tie-in 9 formed by integrally connecting these form the connecting portion 6 of the stage plates 4, 5 that bends and stretches the front and rear large pulls 14, 15. .

  A rear floor plate 12 having a depth equivalent to the length of the rear large pull 15 is provided via a joist 13 to configure a stage board 5 (hereinafter also referred to as the rear stage plate 5), and the front large pull is configured. The stage plate 4 (14) is provided with a front floor plate 11 of a predetermined depth continuous on the same plane with the rear floor plate 12 at the front end of the rear floor plate 12 in horizontal extension with the rear large pull 15 via the joists 13. Hereinafter, it is also called the front stage board 4.).

  With such a configuration, the front large pull 14 and the rear large pull 15 are bent in half by the connecting portion 6 and the front stage plate 4 and the rear stage plate 5 are folded and deformed in reverse, Corresponding to the front end of the rear stage board 5, the ceiling height of the storage room S is set, and the rear stage board 5 is positioned on the same vertical plane as the wall surface W at the upper end of the opening section of the housing S to close the opening Similarly, it can be accommodated in the storage S (see FIG. 6).

  Below the base end pivots of the stage plates 4 and 5 (large pulls 14 and 15) in each bundle column 2 and 3 with the stage plates 4 and 5 erected, a non-loaded compression coil spring 17 is externally fitted. The proximal end of a spring support rod 19 provided on the proximal side with a spring receiver 18 holding the one end of the compression coil spring 17 in a pivoting manner pivotally in the elevation direction of the stage plates 4 and 5 The spring retainer 20 which abuts on the other end of the compression coil spring 17 and loosely fits the tip end side of the spring support rod 19 is fixed at an appropriate position of the stage plates 4 and 5 (large pulls 14 and 15 in the illustrated example) A vessel 21 is provided.

  The compression coil spring 17 is formed by connecting in series two or more (three in the illustrated example) compression coil springs 17a, 17b and 17c having the same inner and outer diameters but different spring constants, and the compression coil springs 17a, 17b and 17c The length and the spring constant are set appropriately.

The spring support rod 19 is formed of a screw rod longer than the series length of the compression coil springs 17a, 17b and 17c in the unloaded state, and the lower end of the bundle pole 2 and 3 is lower than the proximal pivot of the large pulls 14 and 15. It is pivotally attached to a bracket 22 horizontally provided on the inward facing surfaces 2a and 3a of the housing.
Further, two nuts 23 and 23a are screwed to the base end of the spring support rod 19, and the spring support rod 19 is inserted through the nut 23 on the tip end side of the spring support rod 19 and the outer diameter is compressed. A disk-shaped spring receiver 18 larger than the inner diameter of the coil springs 17a, 17b, 17c is in contact.

  The distance between the spring receiver 18 and the spring presser 20 can be adjusted by the movement of the nuts 23 and 23a on the spring support rod 19, whereby the biasing force of the compression coil springs 17a, 17b and 17c can be adjusted. .

  The spring retainer 20 is a rectangular plate larger than the outer diameter of the compression coil springs 17a, 17b and 17c vertically installed on the back of the large pulls 14 and 15 so as to face the inward facing surfaces 2a and 3a of the bundle poles 2 and 3. Only the spring support rod 19 is inserted through the center of the spring.

Next, the folding and storing device provided in the folding and storing type stage 1 will be described.
The folded storage holding device is a locking means 24 for restraining movement of the rear bundle pole 3 in the erected state of the stage plates 4 and 5. The locking means 24 is in the storage space S in the folded state. Floor side f, wall surface W1 in storage S, and fixed side suitable place selected from the front component members 1a of the foldable storage type stage 1 disposed in front of the connecting portion 6 (in the illustrated example, each on the left and right sides) The rear component 1b of the foldable storage type stage 1 disposed at the rear of the connecting portion 6 is provided so as to be able to be engaged with or disengaged from the one side surface of the front bundle pillar 2 located at

  The front component 1 a is a component of the front stage plate 4 (floor plate 11, joist 13, large pull 14), a front bundle pole 2, and tie-throughs 7, 7 a, 7 b integrally formed with the front bundle pole 2. .

  The rear component 1b is a component of the rear stage plate 5 (floor plate 12, joist 13, large pull 15), the rear bundle pole 3, the tie-ins 7, 7a, 7b integrally formed with the rear bundle pole 3, and left and right The curtain plate 26 is constructed between the rear end faces of the rear bundle poles 3 of the above.

  The securing means 25 is formed so as to be able to engage and disengage with the projecting piece 27 projecting toward the rear component 1b from the fixed side suitable position (one side surface of the front bundle pole 2 on the left and right end sides). And an engaging piece 28 provided on the rear component 1b.

  The projecting piece 27 is formed of a long strip in the front and rear direction in which the thickness is matched in the left and right direction, and a tie 7b (hereinafter referred to as a front tie 7b) ) And fixed to one side surface of the front bundle pole 2, the tip of which protrudes horizontally from the front bundle pole 2 toward the rear bundle pole 3, with the stage plates 4 and 5 folded up The tip end portion of the projecting piece 27 is disposed on a tie 7b (hereinafter referred to as a rear tie 7b) integrated with the rear bundle pillar 3 on the left and right ends.

  Further, a notch 27a is provided at the tip of the projecting piece 27 from the upper end thereof in a direction (vertical direction in the illustrated example) orthogonal to the front and rear direction, and an engaging element 28 is detachably engaged with the notch 27a.

In the folded state of the stage plates 4 and 5, the engagement piece 28 is attached to a support plate 29 which is erected at a right angle to the projecting piece 27 on the rear side of the rear tie-through 7b. There is.
At the lower end of the support plate 29, a horizontal plate 29a is continuously formed at a right angle to this, and the horizontal plate 29a is fixed to the upper surface of the rear tie-through 7b, and a notch 27b for avoiding collision with the horizontal plate 29a. Is formed at the lower end of the projecting piece 27.

  On the front surface of the support plate 29, the proximal end of an elongated disc-like engaging element 28 disposed parallel to the supporting plate 29 is pivotally attached, and the spindle 30 bearing the proximal end of the engaging element 28 is supported The bearing is orthogonally supported to the plate 29 and the base end face is exposed on the rear surface of the support plate 29.

  A substantially T-shaped key handle 31 capable of pivoting the support shaft 30 is provided on the support shaft 30 of the engaging element 28 so as to be engageable with and disengageable from the outside of the rear component 1a in the folded state of the stage plates 4 and 5. ing.

  A key hole 30a is recessed in the base end face of the support shaft 30, and the key hole 30a communicates with the outside through a through hole 26a provided in the curtain plate 26, and can be inserted into the through hole 26a. A key portion 31a which is fitted to the key hole 30a and connected to the support shaft 30 is provided at the end of the shaft portion.

  Then, the key portion 31a of the key handle 31 is inserted into the key hole 30a, and the tip of the engaging element 28 which rotates in conjunction with the rotation of the key handle 31 is freely engageable with the notch 27a. By locking it in such a way as to restrain the movement of the rear bundle pole 3, and by releasing the engaging element 28 from the cut 27 a, the locking is released (unlocked) and the movement of the rear bundle pole 3 is possible And

  Also, in the vicinity of the engaging element 28 on the back tie 7b of the rear component 1b, similarly to the projecting piece 27, the receiving plate 32 capable of engaging and disengaging the tip of the engaging element 28 is perpendicular to the front surface of the support plate 29. The receiving plate 32 is provided with a separate cut 32a similar to the cut 27a from the upper end thereof, and the engaging piece 28 is the projecting piece 27 and the projecting piece in the folded state of the stage plates 4 and 5 The engaging plate 28 is orthogonally engaged with the two parallel projecting pieces 27 and the notches 27a and 32a of the receiving plate 32. Thus, the external force applied when the external force acts on the engaging element 28 is dispersed in two places to make it difficult to bend and improve the strength.

  Further, in the state where the stage plates 4 and 5 are folded up, a stop stopper 33 and a car stop 34 are provided in front of and behind the wheels 3 b of all or specific rear bundle poles 3.

  The stopper 35 arranges the base 35 at an appropriate height position on the side of the front bundle pole 2 corresponding to the wheel 3b (see FIG. 2) to be stopped, and back and forth on the rear end face of the base 35 A base shaft consisting of an adjustable-length screw is projected, and the center of a disk 36 of a predetermined diameter is fixed to the tip of the base shaft, and a rubber shock absorbing material is made on the surface of the disk 36 (opposite to the wheel 3b) 37 is stuck.

  The car detent 34 is a thin plate-like car detent 34 having a height allowing the wheel 3 b to ride over the track behind the wheel 3 b (see FIG. 2) to be detent in the erected state of the stage plates 4 and 5. It is laid on the surface f, and the front and rear end portions of the car stop 34 are formed to be inclined toward the floor surface f.

  In the foldable storage type stage 1 configured as described above, the front large pull 14 and the rear large pull 15 are bent in half by the connecting portion 6 to make the front stage 4 and the rear stage 5. The rear stage plate 5 is positioned on the same vertical plane as the wall surface W at the upper end of the opening of the storage S in a state of being folded upside down and housed in the storage S so as to close the opening. Ru.

  Therefore, by setting the depth (height) of the rear stage board 5 that has been folded and deformed in half to be longer than the front stage board 4, the rear stage board 5 that blocks the opening of the storage S in the folded storage state. The ceiling of the housing S can be set to a desired height so as to correspond to the highest front end (upper end) of the head, and the desired height from the stage 1 configured by extension of the stage plates 4 and 5 to the ceiling of the housing S is desired. You can pull it up.

  When the stage plates 4 and 5 are erected, the stoppers 33 hold the wheels 3b of the rear bundle pole 3 and the stoppers 34 located behind the wheels 3b prevent the wheels 3b from returning backward. The wheel 3b is held in place, enabling accurate positioning of the wheel 3b, and the cut 27a of the projection 27 is disposed on the rotation path of the engagement piece 28. As described later, the engagement piece 28 is securely held in the cut 27a. It is engaged.

Then, the shaft portion of the key handle 31 is passed through the through hole 26a of the curtain plate 26, the key portion 31a at the tip is inserted into the key hole 30a, and the key handle 31 and the support shaft 30 are linked via the curtain plate 26 The key handle 31 is turned from the outside of 26.
Thereby, the engaging element 28 similarly rotated via the support shaft 30 by the rotation of the key handle 31 engages orthogonally to the cut 27a of the projecting piece 27, and the engagement moves the rear component 1b Can be locked to prevent movement of the rear bundle pole 3, and the locking is completed by releasing the key handle 31 from the support shaft 30, and the above-described erected storage state of the stage plates 4 and 5 is firmly fixed. It can hold.

  In such a locked state, the engaging element 28 exerts an external force on the engaging element 28 by orthogonally engaging not only the projecting pieces 27 but also the notches 27a and 32a of the receiving plate 32 parallel to the projecting pieces 27. The external force applied sometimes is dispersed in two places to make the engaging element 29 less likely to bend, and its strength is improved.

  In order to release the locking, the shaft portion of the key handle 31 is connected to the support shaft 30 through the through hole 26a, and the engaging element 28 is released from the notch 27a by the turning operation of the key handle 31. The lock is released to allow the movement of the rear bundle pole 3.

  The front and rear stage plates 4 and 5 and the spring support rod 19 have the same elevation (rocking) direction, but their rotation centers are different, and the tip end of the spring support rod 19 is a large pull on the stage plates 4 and 5 Since the spring retainers 20 fixed to each of 14 and 15 can be inserted and moved back and forth, it follows the elevation of the stage plates 4 and 5.

For this reason, when the stage plates 4 and 5 in the folded state shown in FIG. 6 are tilted, the through projection length of the tip end side of the spring support rod 19 with respect to the spring retainer 20 gradually becomes longer. The interval between them is narrowed and the compression coil spring 17 with free height is gradually compressed in the unloaded state with the stage plates 4 and 5 erected, load is applied, and the stage plates 4 and 5 are in the extended state Stage is composed.

In addition, when the stage plates 4 and 5 are tilted, the same load acts on any of the compression coil springs 17a, 17b and 17c, and at the beginning of a small load, the spring constants of the three compression coil springs 17a, 17b and 17c Because the rate of contraction is larger than when only one is used, the stage boards 4 and 5 can be tilted gently even if only the same load is applied.
Then, when the gradient of the stage plates 4 and 5 becomes gentle and the load becomes extremely large and the compression coil springs 17a, 17b and 17c do not contract in order from the one with the smallest spring constant, the entire spring constant is the largest spring constant. It becomes the same and becomes large, and the rate of contraction becomes small.

Thus, the spring constant can be changed according to the size of the load, and can be relatively smoothly tilted at the beginning of tilting, and when the gradient approaches horizontal, this is gradually resisted against the biasing force of the compression coil spring 17 Therefore, the stage plates 4 and 5 do not extend rapidly and cause no shock on the floor surface, and the rocking becomes gentle, so that the stage plates 4 and 5 can be favorably tilted, and the stage is safely placed on the stage It is transformed.

  And, in the horizontal extension state of the front and rear stage plates 4, 5, the joint between the front large pull 14 and the rear large pull 15 and the joint between the front and rear stage plates 4, 5 are misaligned; The strength of the stage 1 can be improved because the front large pull 14 and the rear large pull 15 are disposed in a staggered manner in the left-right direction and they receive the front end side of the rear stage plate 13 in the stage deformation state.

  Further, when the stage plates 4 and 5 in the extended state are folded and deformed, the compression coil spring 17 in the compressed state is urged in the direction in which the stage plates 4 and 5 are folded. Helping the lifting force in the folding directions 4 and 5, the stage can be smoothly folded and deformed with light force.

  At this time, since the compressed compression coil springs 17a, 17b and 17c are extended in the reverse procedure to the above, initially, the stage plate is operated slowly with a small movement and a small movement with a large biasing force only by the largest spring constant. Since the compression coil springs 17a, 17b and 17c are extended when the inclination is increased, the stage plates 4 and 5 can be erected relatively smoothly, and the stage plates 4 and 5 can be favorably erected. It can operate.

1 Folded storage type stage
1a Front component
1b Rear component 2 Front bundle pole 3 Rear bundle pole
3b Wheels 4 Stage board 5 Stage board 6 Connection part
24 Locking means
25 Means of securing
27 pieces
27a incision
28 engagement child
30 spindle
31 key handle
32 Receiving board
32a incision
34 car stops f floor S hangar W wall
W1 wall

Claims (5)

A front bunch pillar fixed upright on the inner floor surface of a storage cabinet recessed in a wall, and a rear bunch pillar provided with wheels behind the front bunch pillar and arranged so as to be movable back and forth are a pair of front and rear stages By pivotally attaching the base end of the board to the base and freely connecting the stage board, the stage board is deformed horizontally by extending the stage board, and the stage board in the extended state is bent at the connection portion in the folding stand Murphy stage in such deforming freshly folding clamshell stage plate back together, a locking means for inhibiting the movement of the rear bundle columns folded fresh state of the stage plate is provided Te,該施tablet means, the In the folded state, on the fixed side selected from among the floor components in the storage, the wall surface in the storage, and the front components of the foldable stage set forward of the connection, behind the connection A hand that anchors the rear component of the folding stage that is placed Folding stand retractable stage of the folding stand housing holding apparatus being characterized in that it arranged to be disengaged through. The securing means is capable of engaging and disengaging with the projecting piece projecting toward the rear component from the fixed side suitable place and the notch provided in the direction orthogonal to the longitudinal direction of the projecting element in the folded state. 2. The folding and holding device for a folding stage according to claim 1, comprising an engaging element provided on the rear component . The engaging element is rotatably provided so as to be able to be engaged with and disengaged from the cut, and the support shaft of the engaging element is a rear component member in the folded state of the key handle capable of rotating the support shaft. The foldable storage holding device for a foldable storage type stage according to claim 2, characterized in that it is provided so as to be able to be detached from the outside . 4. A receiving plate in which a separate cut is formed in the rear component near the engaging element in the folded state, the engaging element is provided in parallel with the projecting piece. A folded storage holding device for the folded storage type stage described above. 5. A foldable storage type stage according to claim 1, 2, 3 or 4 characterized in that a car stop having a height allowing said wheel to ride over is laid behind the wheel of the rear bundle pole in said folded state. Storage and holding device.

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