JP2501278Y2 - Movable floor tilting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a movable floor inclining device equipped in a theater stage device or the like.

[Conventional technology]

FIG. 10 is a plan view of a movable floor tilting device used in a conventional stage apparatus, and FIG. 11 is a sectional view taken along line XX of FIG.

In the figure, 1 is a fixed floor of the stage, 2 is a pit provided in the lower part of the stage, 3 is a fixed pit floor, 4 is a movable floor provided above the pit 2, and H is a movable floor in the pit floor 3. 4 is a hinge device for supporting the front part of J.
Is a jacking device for supporting the rear part of the movable floor 4.
The set of movable floor tilting devices is made up of the parts denoted by the above-mentioned symbols H and J. In FIG. 10, three sets of this device are provided on one movable floor, but generally, a plurality of sets of devices are provided according to the lateral width of the movable floor.

In FIG. 11, H ₁ is a lower support member of the hinge device H fixed to the pit floor 3, H ₂ is an upper support member of the hinge device H fixed to the movable floor 4, and H ₃ is a lower support member H. A pin connecting ₁ and the upper support material H ₂ . The hinge device H consists portions denoted the reference numeral H ₁ to H _3, the movable bed 4 can be rotated about the pin H ₃ in a fixed position of the lower front. J ₁ is a lower support member of the jacking device J fixed to the pit floor 3, J ₂ is an upper supporting member of the jacking device J fixed to the movable floor 4, J ₃ is a jacking body, and J ₄ is a lower supporting member. J ₁ is a pin connecting the jack main body J ₃ and J ₅ is a pin connecting the upper support J ₂ and the jack main body J ₃ . The jacking device J is composed of the parts indicated by the above-mentioned symbols J _{1 to} J ₅ and supports the rear part of the movable floor 4.

FIG. 12 is a cross-sectional view when the jacking device is operated in the above device. At this time, the front part of the movable floor rotates around the pin H ₃ whose position is fixed below the front part of the movable floor, and the rear part of the movable floor is pushed up, and the entire movable floor is occupied by the seats of the passengers. To tilt so that the actors above it can see better.

As shown in FIG. 10, the gap between the fixed floor 1 and the movable floor 4 is usually about 6 mm. This means that making the gap wider than this causes a safety problem for the performer, and making the gap narrower than this causes the movable floor to not tilt sufficiently due to the contact of the portion A in FIG. Because there is a problem.

[Problems to be solved by the device]

In the conventional device, the movable floor 4 is adapted to rotate about a pin H ₃ whose position is fixed below the front part thereof. Therefore, with the rotation, the front edge of the movable floor 4 moves forward and after moving about 6 mm, the rear edge of the fixed floor 1 at the floor edge facing portion A as shown in FIG. To contact. For this reason, the inclination of the movable floor 4 is limited until this contact occurs, and even if a larger inclination angle is required for the stage effect, the inclination angle could not be increased. Further, if the tilt angle is increased more than the limit, the contact may cause damage to the device.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned drawbacks and to provide a movable floor inclining device in which the front edge of the movable floor does not contact the rear edge of the fixed floor even if the inclination angle of the movable floor is increased.

[Means for solving the problem]

The present invention has been made to solve the above-mentioned problems, and in the horizontal position, a hinge device for supporting the front part of the movable floor forming the same horizontal plane as the horizontally adjacent front floor, a guide device for guiding the movement of the movable floor in the middle part, and a rear part. In a movable floor tilting device equipped with a jacking device that pushes up the movable floor at
The hinge device includes a pin and an elongated hole that holds the pin rotatably and slidably so as to regulate the vertical and horizontal movement range of the front edge of the movable floor, and the guide device includes the jack. The present invention relates to a movable floor tilting device, which comprises a link mechanism for restricting a horizontal movement range of the movable floor when the rear portion of the movable floor is pushed up by the operation of the apparatus.

[Action]

In the movable floor tilting device of the present invention, when the rear end of the movable floor is pushed up by the operation of the jacking device, the movable floor whose front end is pivotally and slidably supported by the hinge device is guided. It is moved within the horizontal movement range regulated by the link mechanism of the device. At this time, the range of movement of the front edge of the movable floor is restricted by the interaction between the pin of the hinge device and the long hole, so that the front edge of the movable floor is not in contact with the rear edge of the horizontal floor adjacent to the front of the movable floor. To be prevented.

〔Example〕

FIG. 1 is a plan view of the first embodiment of the present invention, and FIG.
The XX sectional drawing of a figure is shown. In the figure, 1 is a fixed floor of the stage, 2 is a pit provided at the bottom of the stage, 3 is a fixed pit floor, 4 is provided above the pit 2, and is flush with the fixed floor in a horizontal state. Movable floor, K is a hinge device for supporting the front part of the movable floor 4 in the pit floor 3, which is different from the conventional device, G is a guide device which does not exist in the prior art, and J is the same structure as the conventional device. It is a jack device having a function. The set of movable floor tilting devices of this embodiment is composed of the parts designated by the above-mentioned symbols K, G and J. Although FIG. 1 shows an example in which three sets of this device are provided on one movable floor, a plurality of sets are generally provided according to the lateral width of the movable floor.

FIG. 3 shows an enlarged detailed view of portion B in FIG. In the figure, K ₁ is a lower support member of the hinge device K fixed to the pit floor 3, K ₂ is an upper support member of the hinge device K fixed to the movable floor 4, and K ₃ is an upper support member K ₂ . The pin K ₄ , which is fixed, is a slot provided in the lower support K ₁ , and the pin K ₃ is rotatably and slidably fitted therein. The hinge device K functions to regulate the movement of the front edge of the movable floor in combination with the action of the guide device described later.

In FIG. 2, G ₁ is a lower support member of the guide device G fixed to the pit floor 3, G ₂ is an upper support member of the guide device G fixed to the movable floor 4, G ₃ is a guide lever, G Reference numeral ₄ is a pin that rotatably connects the lower support member G ₁ and the guide lever G _3, and G ₅ is a pin that rotatably connects the upper support member G ₂ and the guide lever G ₃ . The guide device G is a kind of link mechanism, and, together with the action of the hinge device K,
It functions to regulate the movement of the movable floor 4 when the jacking device J is operated.

FIG. 4 is a cross-sectional view of the movable device in the final inclined position when the jacking device J is operated in the above device,
FIG. 5 is an enlarged detailed view of portion B in FIG. By the operation of the jacking device J, the rear part of the movable floor 4 is pushed up,
As a result, the pin G ₅ of the guide device G occupies its final position after moving on the circumference around the pin G ₄ as shown in FIG. Also, the pin K ₃ of the hinge device K is the fifth
As shown in the figure, move in the direction regulated by the shape of slot K ₄ ,
It occupies the position of the end of the slot on the side opposite to the original position.

The purpose of this device is to incline the movable floor to a large angle required for the stage effect without causing contact between the front edge of the movable floor and the trailing edge of the fixed floor, which is the case in the prior art. An object of the present invention is to provide a tilting device that can be operated. As a matter of course, it is necessary that the space between the floor edge facing portions A is not excessively opened, and that no excessive step is generated in the floor edge facing portions. An example of the design procedure of the movable floor tilting device that satisfies the above conditions is as follows.

A design example will be shown under the condition that the upper surface front edge of the movable floor in the horizontal position and the upper surface front edge of the movable floor in the final tilt position occupy the same position. The front edge of the upper surface of the movable floor is the point C shown in FIGS. 3 to 5, which is a point fixed in the space. Pin K ₃ of the hinge device being secured via an upper supporting member K ₂ to the movable floor, and the position when the movable floor is horizontal, the movable floor is assumed to KoTsuta the rotation about said point C Find the final position of pin K ₃ . These two positions are equidistant from point C. An elongated hole K ₄ having a side edge of a straight line or a curved line (for example, an arc centering on the point C) is provided in the lower support member K ₁ so that the pin K ₃ can move between the both pin positions. Then the position when the pin G _5, the movable floor horizontal guide devices fixed through the upper support member G ₂ to the movable floor, and KoTsuta the rotating movable bed about said point C Find the final position of pin G _{5 under} the assumption. These two positions are equidistant from point C. Above two pins
On the perpendicular bisector of the line segment connecting the position of the G _5, the side of the point C closer than the midpoint of the both pin positions, under the movable bed 4, fixed through the lower support member G ₁ of pit floor is the set position of the pin G _4, providing a guide lever which connects the pin G ₄ and the pin G _5. The vertical bisector of the line segment between the two pin positions described above is a line passing through the point C. Further, due to structural restrictions, the fixing pin G ₄ of the guide device is provided at an appropriate position between the point C and the midpoint between the two pin positions, so that the guide lever G ₃ has dimensions of the point C and the pin G. Shorter than the distance between ₅ and.

In the device designed by the above procedure, when the jacking device is activated and the movable floor is rotated and tilted to reach the final tilt angle, the top edge position of the upper surface of the movable floor is the same as when the movable floor is horizontal. Since it returns to the position of the front edge of the upper surface and coincides with each other, no contact or step is generated during the final inclination. When the movable floor is tilted at the above intermediate angle, the upper front edge of the movable floor moves,
The space between the floor edge facing portions A is slightly opened and some steps are formed, but these are small enough to be ignored. As a result of the above, the apparatus of the present embodiment can incline the movable floor until the required final inclination angle is reached, without contact with the floor edge facing portion, excessive opening, or a large step.

FIG. 6 is an enlarged sectional view of a hinge device according to a second embodiment of the present invention. In the present embodiment, the parts other than those shown in the drawings are the same as the corresponding parts in the first embodiment described above, and therefore their explanations are omitted. In the first embodiment, the pin K ₃ is fixed to the upper support member K ₂ , but in this embodiment, the pin K ₃ is fixed to the lower support member K ₁ . Further, in the first embodiment, the elongated hole K ₄ is provided in the lower supporting member K ₁ , but in the present embodiment, it is provided in the upper supporting member K ₂ . FIG. 7 shows a state in which the movable floor 4 is tilted by the operation of the jacking device. In the present embodiment, when the rear part of the movable floor is pushed up by the jacking device and the guide device acts, the elongated hole K ₄ moves along the fixed pin K ₃ , so in the case of the first embodiment It has the same effect as.

In the above setting example, when the movable floor rotates, the point C becomes the center of rotation only at the moment of rotation at the horizontal position and the moment of rotation at the final tilt position, but at the intermediate tilt position, The center of rotation at each moment moves slightly off point C. Therefore, since point C is not the true center of rotation, it will be called the quasi-rotation center in the following description.

In the above-mentioned design example, an example in which the upper front edge of the movable floor in the horizontal position is selected as the quasi-rotation center C is shown.
It does not matter if it is designed by selecting the rear edge of the upper surface of the fixed floor or another position where contact does not occur and a large step does not occur on the floor surface. Generally, if the quasi-rotation center C is below the fixed floor upper surface, the floor edge facing portions are closer to each other, and if the quasi-rotation center C is above the fixed floor upper surface, the facing portion spacing is open. If the quasi-rotation center is behind the facing portion, the front edge of the movable floor becomes a step,
If it is in front of the facing portion, the front edge of the movable floor becomes a step.

8 and 9 show an example of use of the above-mentioned first or second embodiment. FIG. 8 is a plan view, and FIGS. 9 (a), (b) and (c) are It is a side view in each operating state. This example shows a stage having three movable floors 4a, 4b, 4c, and each movable floor has the movable floor inclining device of the above-mentioned embodiment on each of the ridges 5a, 5b, 5c. Is installed through. In this example, the apex of the press acts as a pit floor. Figure 9 (a) shows the last movable floor.
This is the case when 4c is tilted. At this time, due to the action of the tilting device described above, contact between the horizontal movable floor and the floor edge facing portion of the inclined movable floor is prevented at the position shown in FIG. FIG. 9 (b) shows a case where both the movable floors 4b and 4c are inclined. In this case, the pressure 5c supporting the movable floor 4c is raised so that no step is formed between the front edge of the rearmost movable floor 4c and the rear edge of the movable floor 4b in front of it. At this time, contact between the horizontal movable floor at the position shown in FIG. 10E and the floor edge facing portion of the inclined movable floor is prevented. Figure 9 (c) shows the movable floor
The case where 4a, 4b, and 4c are both inclined is shown. In this case, contact at the position shown in FIG.

As described above in detail through the first embodiment, the second embodiment, and the application example, the movable floor tilting device of the present embodiment brings the front edge of the movable floor into contact with the rear edge of the horizontal floor in front of it. Instead, the movable floor can be tilted at a large angle determined as needed.

[Effect of device]

In the movable floor tilting device of the present invention, the hinge device is
The guide device is provided with a pin and an elongated hole that holds the pin so as to be rotatable and slidable so as to regulate the vertical and horizontal movement range of the front edge of the movable floor, and the guide device is operated by the jacking device. Since the link mechanism that regulates the horizontal movement range of the movable floor when the rear part of the movable floor is pushed up, contact the front edge of the movable floor with the rear edge of the horizontal floor in front of it. Instead, the movable floor can be tilted at a large angle determined as needed.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, FIG. 3 is an enlarged detailed view of a portion B of FIG. 2, and FIG. FIG. 5 is an enlarged detailed view of a portion B of FIG. 4, FIG. 6 is a sectional view of a hinge device according to a second embodiment of the present invention, and FIG. 7 is an operation of the above embodiment. FIG. 8 is a plan view of a usage example of the first or second embodiment, FIGS. 9 (a), (b) and (c) are side views of the above usage example during operation, and FIG. FIG. 11 is a plan view of a conventional movable floor inclining device, FIG. 11 is a sectional view taken along line XX of FIG. 10, and FIG. 12 is a sectional view of the above conventional example in operation. 1 ... Fixed floor, 2 ... pit, 3 ... pit floor, 4 ...
Movable floors, 4a, 4b, and 4c ... Each movable floor in a set of three, 5a, 5
b, and 5c …… Squeezing each movable floor of the three-piece set, H ……
Hinge device, H ₁ ...... Lower support, H ₂ ...... Upper support, H ₃
...... Pin, K …… Hinge device, K ₁ …… Lower support, K ₂ …
… Upper support, K ₃ …… Pin, K ₄ …… Slot, G …… Guide device, G ₁ …… Lower support, G ₂ …… Upper support, G ₃ …… Guide lever, G ₄ … … Pin, G ₅ …… Pin, J …… Jacking device, J ₁ …… Lower support material, J ₂ …… Upper support material, J ₃ …… Jacky body, J ₄ …… Pin, J ₅ …… Pin.

Claims (1)

(57) [Scope of utility model registration request] 1. A hinge device for supporting a front part of a movable floor that forms the same horizontal plane as a horizontally adjacent front floor in a horizontal position, a guide device for guiding the movement of the movable floor in the middle part, and a jacking device for pushing up the movable floor in the rear part. In the movable floor inclining device having the above, the hinge device includes a pin, and an elongated hole that holds the pin rotatably and slidably to regulate the vertical and horizontal movement range of the movable floor front edge, And,
The guide device comprises a link mechanism that regulates a horizontal movement range of the movable floor when the rear part of the movable floor is pushed up by the operation of the jacking device. apparatus.