JPH0751565Y2 - Flat-bed mobile bleachers - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a flat-bed type moving bleaching seat device installed on a multi-purpose ball such as a gymnasium. The present invention relates to a device capable of being separated from a driving part.

[Conventional technology]

Recently, in gymnasiums, etc., in order to use the hall and floor for multiple purposes effectively, a flat stand with a large number of foldable bleachers is pulled out to the floor when necessary, and stored under the floor of the stage when not needed. It is becoming more common to install such flat-bed type mobile bleachers (see Japanese Utility Model Publication No. 63-159055 and Japanese Utility Model Publication No. 1-13143).

[Problems to be solved by the device]

When seating and watching plays and events held on the stage, it is preferable that the front row seats are slightly away from the stage, which allows you to see the entire stage, A good field of view is obtained,
And there is little feeling of fatigue.

However, in the above-mentioned conventional apparatus, the stage and the flat base were relatively close to each other when pulled out to the floor, and the flat base could not be installed at a position completely separated from the stage.

The present invention has been made in view of the above problems, and includes a flat base,
It is an object of the present invention to provide a flat stand type moving spectacle device in which the flat stand can be installed at an appropriate position which is completely separated from the stage by making it possible to separate it from a drive device that drives it back and forth.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a storage room with a front opening under the floor of a stage provided in a part of a gymnasium, etc., and a large number of foldable seats are placed in the storage room. A flat stand type moving spectator device in which a flat stand is housed and, when necessary, pulled out through the opening onto a floor completely separated from the stage in front of the stage, can be rotated forward and backward to the rear of the flat stand. A drive unit that can be self-propelled in the front-back direction independently of the flat base from a position housed in the storage chamber to a predetermined position in front of the stage by a different drive motor, and the front end of the drive unit can be placed at a proper position. In addition, a connector is provided which can be engaged with and disengaged from the flat base at the time of contact with the rear end of the flat base.

Preferably, the storage chamber is provided with a pair of slide guides for guiding the drive unit.

[Action]

Since the flat base and drive unit are independent, the drive unit can be moved forward to push the flat base onto the floor in front of the stage, and then the coupler can be released to retract only the drive unit to the storage chamber. Therefore, the flat base can be installed at a position completely apart from the stage.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIG. 1 and FIG. 2, (1) is a stage provided in a part of the multipurpose hall such as a gymnasium, and the front edge of the floorboard (1a) has a hanging wall (eyes) of a predetermined length. A cover plate (1b) is provided in series.

An opening (3) is formed in a horizontally long rectangular shape between the hanging wall (1b) and the floor (2), and an empty space between the floorboard (1a) and the floor (2) is a storage room (4). .

Reference numeral (5) is a single moving bleaching stand arranged side by side on the stage (1), that is, a flat plate having a horizontal plate shape, and is housed in the housing chamber (4) by a large number of rollers (6) pivotally supported on the lower surface. It is possible to move on the floor (2) from a certain position to an appropriate position in front of the stage (1).

On the flat base (5), a large number of publicly known foldable bleachers (7) are placed in rows at predetermined intervals in the front and rear.

(8) is a horizontally-long rectangular obturating plate that is erected on the front edge of the flat base (5), and closes the opening (3) when the flat base (5) is stored up to the front end of the storage chamber (4). , To prevent the appearance is damaged.

(9) is a self-propelled drive unit that drives the flat base (5) forward and backward, and is normally stored behind the flat base (5) in the storage chamber (4).

FIG. 3 and FIG. 4 show the details of the drive unit (9). The upper and lower support frames (11) and (11) are horizontally installed on both sides of the front and rear frame members (10a) and (10b). And (12) (12)
Between them, one pair of front and rear urethane wheels (13)
(13), (14) and (14) are pivotally supported so as to be rotatable about a horizontal axis that faces the left-right direction.

(15) and (15) are drive motors (geared motors) integrated with the reduction mechanism, and support plates (17) fixed to the lower support frames (11), (11) and (12) (12). ) (16) are placed symmetrically with respect to each other.

The drive sprocket (17) fixed to the output shaft of each drive motor (15) and one driven sprocket (18) (18) fixed to the rotation shaft of each rear wheel (13) (14) Endless chains (19) and (19) are respectively wound between them. Similarly, the other driven sprockets (20) (20) on the other side of the rear wheels (13) (14) and the respective front wheels (13).
Each sprocket (21) (2) fixed to the rotating shaft of (14)
A long endless chain (22) (22) is wound between 1).

When each drive motor (15) rotates, front and rear wheels (13)
The wheels (13), (14) and (14) rotate at a constant speed, and the left and right wheels (13) and (14) rotate in synchronization with each other.

Thus, the entire drive unit (9) is
By driving 5) forward and backward, it is self-propelled in the front-back direction independently of the flat base (5) from the position stored in the storage chamber (4) to a predetermined position in front of the stage (1). can do.

The front side frame member (10a) has an extrusion plate that abuts against the rear end of the flat base (5) and pushes the entire flat base (5), and the opening (3) when stopped at the front end of the stage (1). It also functions as a closing plate.

Reference numerals (23) and (23) are a pair of left and right couplers, and a tow hook (25) having an intermediate portion pivotally attached to a bracket (24) fixed to the front end portions of the inner support frames (11) and (12). ), And also to the support frames (11) (12), with the piston rod (26a) facing downward, and the lower end of the piston rod (26a) is connected to the rear end of the tow hook (25). Solenoid (2
6) consists of

The tip of each tow hook (25) is located in the vertically long hole (27) formed in the frame material (10a), and the electromagnetic solenoid (2
When 6) is activated, it can be rotated up and down in the vertically long hole (27).

At the rear end of the flat base (5), when it comes into contact with the drive unit (9), the flat base (5) is loosely inserted into both the vertically long holes (27), and
A pair of hooking pieces (28) (28) that can engage with both hooks (25) when the tow hooks (25) are rotated downward are fixed.

Reference numerals (29) and (29) are a pair of left and right slide guides having a C-shape when viewed from the front for guiding the drive unit (9). The floor (2) is located in the storage chamber (4) and extends from a substantially middle portion to a front side.
A pair of left and right fixed rails (30) (30) fixed to the upper side, and a plurality of guide rollers (31) (31) pivotally supported on the upper and lower sides and side surfaces of the inner surface of the slide rail (29). And (32) are slidably fitted (see FIG. 5).

The dimension between the slide guides (29) is set to be equal to or slightly larger than the width of the drive unit (9).

As shown in FIG. 5, stopper pieces (33) that can come into contact with the front end of the drive unit (9), that is, both sides of the frame member (10a) are fixed to the inner surface of the tip of each slide guide (29). There is.

When the drive unit (9) stopped at the rear of the stage (1) reaches near the front end of the stage (1), both sides of the front end contact the stopper pieces (33) of the slide guide (29). By both slide guides (29)
Are guided together with the drive unit (9) and moved forward.

Reference numerals (34) and (34) are a pair of left and right electromagnetic solenoids provided at the rear of the drive unit (9) so that the piston rod (34a) can project outward. When the piston rod (34a) is extended during extension, the tip end of each piston guide (29)
Can come into contact with the locking projection (35) fixed to the upper surface near the front end in () (see FIG. 5).

As a result, both slide guides (29) are moved rearward integrally with the drive unit (9) when the drive unit (9) is retracted, and are housed in the fixed rail (30) in the storage chamber (4).

Next, the operation of the above embodiment will be described with reference to FIGS. 6 (a) to 6 (d).

First, a description will be given of the case where the flat base (5) stored in the storage room (4) is pulled out onto the floor (2) in front of the stage (1) to view an event or the like performed on the stage (1). To do.

As shown in FIG. 6 (a), the tow hook (25) of the drive unit (9) is pre-engaged with the hooking piece (28) at the rear end of the flat base (5), and the storage chamber (4 When both drive motors (15) of the drive unit (9) stopped at the innermost part of () are driven in the forward direction, for example, the left and right wheels (13) (14) are synchronized in a counterclockwise direction in side view. Then, the whole drive unit (9) advances.

As a result, the flat base (5) is gradually pushed onto the floor (2) in front of the stage (1).

When the drive unit (9) advances to the vicinity of the front end of the stage (1) as shown in FIG. 6 (b), the front end contacts the stopper piece (33) of the slide guide (29), and from this position. When the drive unit (9) further advances, the sixth
As shown in FIG. (C), the slide guide (29) slides forward integrally while guiding the drive unit (9).

When the drive unit (9) advances to a predetermined position, the power supply to the drive motor (15) is cut off by the operation of a limit switch (not shown) that detects the movement of the slide guide (29), and the drive unit (9) is cut off. Will stop automatically.

Then, the engagement between the tow hook (25) and the hooking piece (28) is released, and the electromagnetic solenoid (34) is operated,
After the piston rod (34a) is projected, the drive motor (15) is driven in the opposite direction.

Then, the drive unit (9) starts retreating, and at the same time, the piston rod (34a) and the locking projection (35) of the slide guide (29) come into contact with each other, so that the slide guide (29) is again moved. While guiding the drive unit (9), it slides backward integrally.

As shown in FIG. 6 (C), when the drive unit (9) and the slide guide (29) are retracted until they are stored just below the front end of the stage (1), a limit switch (not shown) is activated to drive the drive unit. (9) automatically stops.

At this time, since the front frame member (10a) of the drive unit (9) acts as a blinder covering the opening (3) at the front end of the stage (1), the inside of the storage chamber (4) is exposed and the appearance is improved. There is no loss.

Thus, the flat base (5) is installed at a predetermined position completely separated from the stage (1), separated from the drive unit (9), and on the floor (2) between the flat base (5) and the stage (1). There are no obstacles left behind, so that the space can be effectively used as a passage.

Next, a description will be given of how to store the pulled out flat base (5) when using the inside of the hall over a wide area such as competition or physical education.

First, the front end of the stage (1), that is, FIG. 6 (d).
The drive motor (15) of the drive unit (9) standing by at the position shown in FIG.
As shown in FIG. 6 (C), the limit switch is moved forward again, that is, to the position where it comes into contact with the rear end of the flat base (5).

Then, the electromagnetic solenoid (26) is operated to engage the pulling hook (25) with the hooking piece (28), thereby connecting the flat base (5) and the drive unit (9) to each other.

At this time, the electromagnetic solenoid (34) is returned so that the piston rod (34a) does not come into contact with the locking projection (35).

Next, when the drive motor (15) is driven in reverse, the drive unit (9) retracts while pulling the flat base (5),
As shown in FIG. 3A, when the flat base (5) is completely stored in the storage chamber (4), a limit switch (not shown) is activated to stop the drive unit (9).

When the flat base (5) is stored, the slide guide (29) protruding forward has its front end fixed to both sides of the front end of the flat base (5). The downward pushing plates (5a) (5a).
(See FIG. 2) When it is brought into contact with the fixed rail (30) in the storage chamber (4), it is slid backward and stored.

As described above, in the moving bleachers apparatus of the above-described embodiment, all the drive mechanisms such as the motor are provided on the drive unit (9) side, so that the flat base (5) is located at a position away from the stage (1). It can be installed easily, and there are no obstacles such as power supply cables left on the floor surface between the separated flat base (5) and drive unit (9), and it can be used for passages, etc. .

The distance between the stage (1) and the flat stand (5) is within the length of the slide guide (29), or by selecting the length, depending on the event held on the stage.
It can be set appropriately.

Since the slide guide (29) is provided, the straightness of the drive unit (9) when traveling is improved.

In the present invention, if the straightness of the drive unit (9) itself is improved, the slide guide (29) may be omitted. In this case, the movable range of the drive unit (9) becomes large. The flatbed (5) can be installed at a position farther from the stage (1).

[Effect of device]

According to the present invention, by providing the independent self-propelled drive unit with the connector that can be engaged with and disengaged from the flat base, only the flat base can be installed on an appropriate floor completely separated from the stage. Moreover, there is no obstacle left on the floor surface between the stage and the flat stand, and the space can be used effectively.

When the drive unit is guided by the slide guide, the straightness of the drive unit can be improved.

[Brief description of drawings]

1 is a partially cutaway plan view showing an embodiment of the present invention, FIG. 2 is a vertical sectional side view taken along line XX in FIG. 1, and FIG. 3 is a plan view showing details of a drive unit. 4 and 5 are side views of the same, FIG. 5 is a vertical sectional front view of the main part taken along the line Y-Y in FIG. 1, and FIGS. 6 (a) to 6 (d) show how to pull out the flat base. It is a schematic plan view. (1) Stage, (1a) Floor board (1b) Hanging wall, (2) Floor (3) Opening, (4) Storage room (5) Flat stand, (6) Roller (7) Seat, (8) Closure plate ( 9) Drive unit, (10a) (10b) Frame material (11) (12) Support frame, (13) (14) Wheel (15) Drive motor, (17) Drive sprocket (18) (20) (21) Driven Sprocket, (19) (22) endless chain (23) coupler, (35) tow hook (26) electromagnetic solenoid, (26a) piston rod (28) hooking piece, (29) slide guide (30) fixed rail, ( 31) (32) Guide roller (33) Stopper piece, (34) Electromagnetic solenoid (34a) Piston rod, (35) Locking projection piece

Claims (2)

[Scope of utility model registration request] 1. A storage room with a front opening is provided under the floor of a stage provided in a part of a gymnasium, etc., and a flat stand on which a large number of foldable bleachers are placed is stored in the storage room. Occasionally, in the flat-bed-type moving spectator device, which is configured such that the flat base is pulled out through the opening onto the floor in front of the stage and completely separated from the stage, the flat base is housed behind the flat base by a drive motor capable of rotating in the normal and reverse directions. Between a position housed in the room and a predetermined position in front of the stage, a drive unit that is capable of self-propelling in the front-rear direction independently of the flat base is provided, and at a proper position of the front end of the drive unit,
A flat stand type moving bleaching apparatus comprising a connector that can be engaged with and disengaged from the flat stand when the flat stand contacts the rear end of the flat stand. 2. The drive unit is guided by a pair of slide guides which are fitted to fixed rails provided on both left and right sides in the storage chamber so as to be slidable in the front-rear direction. (1) A flat-bed type mobile bleaching apparatus.