JPH04302634A - Wall device of building such as concert hall - Google Patents

Abstract

PURPOSE:To enhance attractive appearance and to improve adjustment workability in a wall device provided with a plurality of wall plates and having an adjusting function of sound effect by means of posture of the wall plates by smoothing and synchronizing movement of respective wall plates. CONSTITUTION:Required quantity of wall plates 10 each having a reflection plate 24 at least in a room interior side is rotatably provided, respective wall plates 10 are connected to each other by means of a rod-like transmission member 31 so that respective wall plates 10 can be turned synchronously, and a drive member 32 is connected to the rod-like transmission member 31 with the same connecting condition as that of the wall plate 10 to the transmission member 31. A motor 38 is connected to the transmission 31 and rotation of the motor 38 is decelerated by means of a reduction mechanism including inverter control 47, 48. Rotation speed of the motor 38 is reduced to desired speed to be transmitted to all the wall plates 10 so as to adjust posture of the wall plates 10.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to wall devices for buildings such as concert halls and theaters where various events are held, and particularly to wall devices having acoustic control functions such as sound reflection, sound absorption, and adjustment of reverberation time. be.

0002

[Prior Art] In halls where various events are held, depending on the type of event, the walls of the hall are designed to reflect the sound effectively to increase the acoustic effect or to suppress sound reflection. Preferably, the acoustic performance is controlled.

[0003] The time it takes for sound generated in a room such as a theater to disappear is called reverberation time, and the length of the reverberation time depends on the properties of sound reflection and absorption of the members that make up the room. In general, when events such as music require rich reverberations, it is desirable to have a property with a long reverberation time, and when events such as lectures require clear audibility, it is desirable to have a property with a short reverberation time. It is desirable that there be.

[0004] Therefore, some halls and other venues for holding events are equipped with wall devices that have acoustic control functions such as reverberation time adjustment.

FIG. 6 shows the concept of a conventional wall device, in which strip-shaped wall plates 1a, 1b, 1c, . has been done. Also, sprockets 2a, 2b, 2c... are fitted to the rotating shafts of the wall plates 1a, 1b, 1c..., and these sprockets 2a, 2b, 2c... It is connected to the fitted sprocket 4 by a chain 5.

By driving the motor 3, each of the wall plates 1a, 1b, 1c, . . . rotates via a chain 5, and the angle of the wall plate surface can be changed. By changing the angle of this wall plate surface, the direction in which the performance sound is reflected changes, making it possible to adjust the acoustic effect.

[0007]

However, in the above-mentioned conventional wall device, the wall plates 1a, 1b, 1c, .
The angles of 1b, 1c... do not match, and the wall plates 1a, 1b, 1
c... did not return completely, resulting in an unsightly appearance. In addition, chains elongate over time or due to temperature changes, and a certain amount of slack is required during installation, so it is impossible to completely eliminate chain slack, and the above-mentioned problems may occur. had become inevitable.

Furthermore, in the conventional type, the reduction ratio is fixed by the reduction gear 3a, and when a large reduction ratio is used, it takes time to fully open the reduction gear, and when a small reduction ratio is used, the chain becomes slack. Yes, it was difficult to make slight angle adjustments.

[0009] In view of the above-mentioned circumstances, the present invention aims to enable the movement of the wall panels to be completely synchronized, and to allow optimum angle adjustment in any state such as fully open, fully closed, and subtle adjustments. be.

0010

[Means for Solving the Problems] The present invention provides a wall plate provided with a reflecting plate on at least the indoor side so as to be rotatable a required number of times, and connects each wall plate with a rod-shaped transmission member, so that each wall plate can be rotated synchronously. A driving member is connected to the rod-shaped transmission member under the same conditions as the connection between the wall plate and the transmission member, a motor is connected to the transmission member, and the rotation of the motor is decelerated by a deceleration mechanism including inverter control. It is characterized by being configured to do so.

[0011]

[Operation] The rotational speed of the motor is reduced to a desired speed and transmitted to the driving member, and further transmitted to all the wall plates via the transmission member. Accordingly, the wall plate is rotated quickly or slowly depending on the adjustment situation, and its posture is adjusted.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a side wall of a venue such as a concert hall, in which wall devices 7, 8, 9, . . . are embedded. As shown in FIG. 2, each wall device 7, 8, 9... has horizontally long strip-shaped wall plates 10, 10, 10... in multiple stages, and has a height from the floor to the ceiling. Changes are handled by increasing or decreasing the number of wall panels 10.

Each wall plate 10 is rotatably provided on a frame 11, 12, 13, etc. about a horizontal axis, and each wall plate 10 is mounted on a frame 11, 12, 13...
, 8, 9... all the wall plates 10 are connected by links (described later) so that they rotate integrally.

Further, an opening/closing drive unit 14 is provided on the ceiling, and the output shaft of the drive unit 14 and the uppermost wall plate 10 are connected by a link, and the drive unit 14 is connected to the uppermost wall plate 10. By rotating the wall devices 7, 8, 9...
All the wall plates 10 rotate in complete synchronization.

This will be explained in detail below with reference to FIGS. 3 and 4. Note that since each wall device is mechanically the same, the description will be given for the wall device 9.

An opening 16 for installing the wall device 9 is provided in the wall 15 of the venue, the frame 13 is attached to the opening 16 via metal fittings 17, and a required number of wall plates are attached to the frame 13. 10 is rotatably attached.

An interior panel 18 is attached around the opening 16 to hide the mechanical part of the wall device 9. Further, an outer wall 19 is provided on the outdoor side of the wall 15, and a sound absorbing material 20 is pasted on the indoor side of the outer wall 19.

The wall plate 10 has a hollow shaft holding member 21 aligned with the rotational axis passing through it in the horizontal direction, and a U-shaped frame 22 is fixed to the top and bottom of the shaft holding member 21 to form a panel frame. 23, the space of the panel frame 23 is filled with a sound absorbing material (not shown) such as glass wool, and a reflecting plate 24 made of a synthetic board, cement board, etc. is attached to the indoor side of the panel frame 23, Expanded metal is attached to the outdoor side of the panel frame 23.

An end shaft 27 is fixed to both ends of the shaft holding member 21 through a shaft end block 25 and an internal fixing plate 26, and the end shaft 27 is connected to the frame 13 through a bearing 28.
is rotatably supported. A driven link 29 is fixed to one of the shaft end blocks 25, and all the driven links 29 are connected via pins 30 by two transmission links 31, 31 on both sides. The upper end of the transmission link 31 is pivotally connected to a drive link 32, which will be described later. Note that the operating arm lengths of the drive link 32 and the driven link 29 are made the same.

Side seal members 33 made of rubber or mohair are attached to both sides of the wall board 10 to close the gap with the interior panel 18. Further, a lower sealing member 34 made of rubber material or mohair is also provided on the lower end surface of the wall plate 10, and when the wall plate 10 is in the closed state, the lower sealing member 34 is attached to the lower side as shown in FIG. It comes into close contact with the upper end of the wall board 10.

[0022] Also, a floor seal member 35 is provided on the floor surface, which abuts against the lowermost wall plate 10.

As mentioned above, the wall device has a drive unit 14 on the ceiling side, and the drive unit 14 and all the wall plates 1
0 is connected by the transmission link 31.

A frame-shaped base frame 37 is installed on the upper floor 36, and a motor 38 is fixed to the base frame 37.
A drive shaft 39 is rotatably mounted so as to be in the same plane as the end shaft 27. The drive shaft 39 includes the drive link 32,
A driven sprocket 40 is fixed, and the driven sprocket 40 is connected via a chain 41 to a driving sprocket 43 fixed to the output shaft of the motor 38.

In FIG. 3, reference numeral 44 indicates an opening provided in the upper floor 36 for installing a wall device, and reference numeral 45 indicates a window hole provided in the outer wall 19 for eliminating sound.

Next, the opening/closing control device will be explained with reference to FIG.

In the figure, 46 is an operation panel, 47 is a control circuit for the motor 38 of the drive unit 14, 48 is an inverter, and 4
9 is a safety switch provided on the rotating shaft of the motor 38;
0 is a switch for limiting the opening/closing degree of the wall plate 10.

The operation panel 46 is equipped with an input section for inputting opening/closing operation conditions such as operation switches for opening/closing commands and an opening/closing speed regulator.

[0029] The safety switch 49 is, for example,
A slide nut is screwed onto a screw shaft connected to a rotating shaft of No. 8, and the movement of the slide nut in the axial direction is detected by a micro switch or a proximity switch.

Further, the opening/closing degree control switch 50 is connected to the wall plate 10.
Although not particularly shown, the movement of the opening/closing machine is detected using a limit switch or the like. For example, rotation of the drive link 32,
Alternatively, the vertical movement of the transmission link 31, the rotation of the driven link 29, or the rotation of the wall plate 10 itself, or the movement of the groove by making the drive link 32 into a disk shape and carving a groove on its outer peripheral surface. is detected by a limit switch, and furthermore, the drive link 3
2 is shaped like a disk, a detection hole is bored therein, and the hole is detected by a photosensor or a proximity switch.

The operation will be explained below.

[0032] When it is necessary to adjust the acoustic effects such as adjusting the reverberation time using the wall board 10, such as when a concert is held,
The rotation speed and rotation direction of the wall plate 10 are commanded from the operation panel 46. In response to a command from the operation panel 46, the control circuit 47 and the inverter 48 reduce the rotational speed of the motor 38 to a required state and drive the motor 38 to rotate at an extremely low speed. The driven motor 38 rotates the drive link 32 via the chain 41, driven sprocket 40, and drive shaft 39. The rotation of the drive link 32 is transmitted to the driven link 29 of each wall plate 10 via the transmission link 31. Drive link 32 and driven link 29
The two are in a parallel link relationship, and exactly the same movement is transmitted.

[0033]The wall plate 10 rotates slowly, and the operator can reliably adjust it to a desired position. Furthermore, since each wall plate 10 and the drive unit 14 are connected by a link, there is almost no play, so delicate adjustments can be made.

[0034] Therefore, there is no possibility that gaps will be created due to deviations in movement between the wall plates, and the appearance will not be impaired due to irregular postures between the wall plates.

[0035] Next, when releasing reverberant sound, or when an event changes from a concert to a lecture, it is desirable to shift to the full-throttle state as soon as possible. In this case, the operation panel 46
If you specify a higher opening/closing speed and open/close, the control circuit 4
7. Drive the motor 38 at an increased speed with the inverter 48 to bring it into a fully open (or fully closed) state within a short time.

The above-mentioned safety switch 49 and opening/closing degree control switch 50 are provided to prevent the wall plate 10 from overrunning and damaging the mechanism, and normally the opening/closing degree control switch 50 is The operating positions of both switches 49 and 50 are set so that the safety switch 49 is activated slightly before the motor 38 is activated, and the rotation of the motor 38 is stopped.

As described above, the position of the wall plate 10 can be adjusted at a desired speed, and even if the safety switch 49 is operated by mistake,
, the dual safety measures of the opening/closing degree control switch 50 prevent the device from being damaged.

It goes without saying that a mechanical speed reducer such as a worm speed reducer may also be used to reduce the speed of the motor.

[0039] Also, although two transmission links 31 were used as a set, one
Alternatively, one transmission link 31 may be sandwiched between two drive links 32 and two driven links 29 and connected. Further, the transmission link 31 is not one continuous link in the upper and lower directions, but may be divided into each connection section. Alternatively, the transmission link may be a rack, and the drive link and driven link may be gears and rack-pinion type to rotate each wall plate.

Further, although the drive unit 14 is provided on the ceiling side, it may be provided on the floor side.

Furthermore, although the wall device was placed in a vertical position in the above embodiment, it goes without saying that various changes can be made without departing from the gist of the present invention, such as it being possible to install it in a horizontal position. do not have.

[0042]

[Effects of the Invention] As described above, according to the present invention, each wall plate moves smoothly and in perfect synchronization, so the appearance is good, and the posture of the wall plate can be controlled quickly and finely adjusted. It is also easy to perform and has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a wall of a building in which a wall device according to an embodiment of the present invention is implemented.

FIG. 2 is a view taken along the line A-A in FIG. 1;

FIG. 3 is an enlarged partially cutaway view of FIG. 2;

FIG. 4 is a view taken along the line BB in FIG. 3;

FIG. 5 is a block diagram of a control device in this embodiment.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

10 Wall board 24 Reflector 29 Driven link 31 Transmission link 32 Drive link 38 Motor 47 Control circuit 48 Inverter 50 Opening/closing limit switch

Claims (3)

[Claims] Claim 1: A wall plate provided with a reflective plate on at least the indoor side is provided so as to be rotatable a required number of times, each wall plate is connected by a rod-shaped transmission member, and each wall plate can be rotated synchronously, the rod-shaped transmission member A drive member is connected under the same conditions as the connection conditions between the wall plate and the transmission member, a motor is connected to the transmission member, and the rotation of the motor is decelerated by a deceleration mechanism including inverter control. Wall equipment for buildings such as concert halls. 2. The wall device for a building such as a concert hall according to claim 1, wherein a safety switch is connected to the rotating shaft of the motor. 3. The wall device for a building such as a concert hall according to claim 2, further comprising an opening/closing degree limiting switch for a necessary component of an opening/closing mechanism that transmits the rotation of the motor to the wall plate or for the wall plate.