KR100901314B1 - Angle adjust appratus for sound refrection board in stage - Google Patents

Abstract

A non-power tilting device for the sound reflecting board of the stage is provided, which enables to control the angle of the sound reflecting board manually without the drive unit. A non-power tilting device for the sound reflecting board of the stage comprises: a perpendicular frame(30) fixed to the ceiling of the stage; a sound reflecting board(10) which is rotatably connected to the bottom of the perpendicular frame; a principal axis(41) which is rotatably equipped in the backplane of the sound reflecting board; a handle(42) which is detachably combined in order to rotate the principal axis; an arm(51) in which one end is fixed to the principal axis; a connecting rod(52) in which one end is hinge-connected to the other end of the arm and the other end is hinge-connected to the perpendicular frame; and a fixing device which maintains the rotation angle of the principal axis.

Description

ANGLE ADJUST APPRATUS FOR SOUND REFRECTION BOARD IN STAGE}

The present invention relates to an acoustic reflector of a stage, and more particularly, to a non-powered angle adjusting device for an acoustic reflector of a stage capable of lightening and precisely adjusting the rotation angle of the acoustic reflector.

The ceiling of the stage used for various performances is provided with an acoustic reflector in order to effectively reflect the sound generated on the stage to provide an optimum sound effect to the audience.

The sound reflection plate is angled to a state capable of transmitting various sounds generated on the stage to an optimal state by the angle adjustment device for the sound reflection plate provided with the sound reflection plate.

Looking at the configuration of the angle adjusting device for the acoustic reflector of the stage according to the prior art through Figures 1 and 2, the drive motor 112 and the reducer 113 and the drum 114 connected to the rotating shaft of the drive motor 112 is A sound reflecting plate 111 is provided, and a rear side of the sound reflecting plate 111 is hinged to a vertical frame 131 connected to the hanger wire 121, and the drum 114 has a vertical frame 131 and one end. Is coupled and the other end is provided with a plurality of ropes 116 wound on the drum 114, a plurality of rollers 115 for guiding the rope 116 between the drum 114 and the vertical frame 131 Is provided, by adjusting the length of the rope 116 existing between the drum 114 and the vertical frame 131 by rotating the drive motor 112, thereby adjusting the angle of the acoustic reflection plate 111.

However, the angle adjusting device for the acoustic reflection plate of the stage according to the prior art as described above by the weight of the drive motor 112, the reducer 113 and the drum 114 to provide the power necessary for the angle adjustment of the acoustic reflection plate. Excessive load is applied to the hanger wire 121 supporting the reflector plate 111. That is, the weight of the driving motor 112, the reduction gear 113, and the drum 114 is additionally applied to the hanger wire 121 to the load of the acoustic reflection plate 111.

In addition, since the capacity of the driving motor 112 needs to be increased to further rotate the additional load, the weight of the driving motor 112 must be increased, and a vicious cycle in which the aforementioned problems become larger due to the increased load occurs.

In addition, since the rope 116 wound on the vertical frame 131 and the drum 114 is stretched by the load, the rope 116 is stretched when the acoustic reflector 111 is manipulated through the driving motor 112. The problem of not operating at an angle occurs.

In addition, play may occur in the drum 114 as the rope 116 is extended, such that the ropes 116 may be twisted in the drum 114.

The present invention has been invented to solve the above problems, and can reduce the weight of the driving unit required for driving the acoustic reflector, and the power of the acoustic reflector of the stage that can accurately control the angle of the acoustic reflector manually without a driving device The purpose is to provide an angle adjuster

In order to achieve the above object, the non-powered angle adjusting device for the acoustic reflector of the stage according to the present invention, in the stage acoustic reflector rotatably connected to the lower end of the vertical frame hanging on the ceiling of the stage using a hanger wire The plurality of vertical frames are arranged in a straight line, and each upper end is connected to a lower end of a hanger wire connected at intervals on the ceiling of the stage, and the acoustic reflection plate has a plurality of connection brackets provided at intervals on the rear side. A main shaft connected to a lower end of the vertical frame through the hinge and rotatably provided with respect to the vertical frame, the main shaft being rotatably provided on a rear surface of the acoustic reflector so as to be parallel to a hinge axis connecting the vertical frame and the acoustic reflector. An arm having one end fixed to the main shaft to rotate simultaneously with the main shaft and one end of the arm It hinged to the other end and comprises a fixing mechanism which is provided on the rear surface of the connecting rod and the acoustic reflector is hinged to the vertical frame maintaining the rotational angle of the main shaft.

Here, the end of the main shaft is preferably provided with a handle that is detachably coupled to rotate the main shaft.

In addition, the connection bracket is characterized in that formed along the center of gravity line in the vertical direction of the sound reflection plate.

According to one aspect of the invention, the fixing mechanism, the disk is inserted into and fixed to the main shaft and a plurality of stop grooves are formed on the outer peripheral surface at intervals, the sliding surface is provided to be slidable on the rear surface of the acoustic reflection plate, It is preferable that the inclined surface is formed to include a stopper rod to maintain the rotation angle of the main shaft in contact with the stop groove, and a spring for elastically supporting the tip portion of the stopping rod to the stop groove.

In addition, a cam member having an operation surface protruding in the sliding direction of the stopping rod is fixed to the stopper rod, and a stopper housing in which the stopper rod is accommodated is provided with a protrusion selectively contacting with the operation surface, thereby operating When the surface is in contact with the projection, the front end portion of the stopping rod is characterized in that separated from the stop groove.

According to the non-powered angle adjusting device for the acoustic reflector of the stage according to the present invention as described above, by reducing the drive unit, such as a drive motor for rotating the acoustic reflector at a desired angle, it is possible to reduce the weight of the angle reflector for the acoustic reflector.

In addition, the angle of the acoustic reflection plate can be accurately rotated to the desired angle through the link structure, and because the sagging of the wire does not occur, durability and accuracy during operation can be improved.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the non-powered angle adjusting device for the sound reflection board of the present invention.

Figure 3 is a perspective view of the non-powered angle adjusting device for the acoustic reflector of the stage according to an embodiment of the present invention, Figures 4 to 6 is a side view showing the operating state of the non-powered angle adjusting device for the acoustic reflector of the stage of Figure 3 7 is an enlarged perspective view of the fixing mechanism in the non-powered angle adjusting device for the acoustic reflector of the stage.

The non-powered angle adjusting device for the acoustic reflection plate of the stage according to an embodiment of the present invention, the upper end is connected to the hanger wire 21 connected to the ceiling of the stage and a plurality of vertical frames 30 are arranged in a line with each other, respectively A sound reflecting plate 10 is hinged to the rear end of the vertical frame 30, the main shaft 41 is rotatably provided on the rear of the sound reflecting plate 10, and one end is fastened to the main shaft 41 Arm 51, a connecting rod 52 hinged at both ends of the arm 51 and the vertical frame 30, and the main shaft 41 to rotate the main shaft 41. A handle 42 that is selectively coupled to one end.

A plurality of vertical frames 30 are provided so that each vertical frame 30 is connected to the lower end of the hanger wire 21. The vertical frame 30 made of a rigid body such as steel is connected to the ceiling of the stage by being connected to the hanger wires 21 arranged at intervals from the ceiling of the stage. The upper end of the vertical frame 30 is formed with a connecting portion 31 protruding laterally to be connected to the hanger wire (21). That is, in order to facilitate connection with the hanger wire 21, a connection portion 31 protruding in a direction perpendicular to the vertical frame 30 is formed.

The vertical frame 30 is provided in plurality, so as to be arranged in a straight line at intervals from each other. Then, the connecting ring 22 is fastened to the connecting portion 31, and the lower end of the hanger wire 21 is connected to the connecting ring.

By winding or unwinding the hanger wire 21 to adjust the height of the vertical frame 30, it is possible to adjust the height of the angle adjusting device for the acoustic reflector of the stage.

The acoustic reflector 10 is rotatably connected to the vertical frame 30.

The acoustic reflector 10 is hinged to the lower end of the vertical frame 30 in the rear to reflect various sounds generated on the stage through the front surface to the audience. The sound reflector 10 is rotated at a desired angle with respect to the vertical frame 30 to reflect the sound generated on the stage to the sound reflector 10 to be transmitted in a desired direction.

At this time, the rear surface of the acoustic reflector 10, the support 11 for reinforcing the strength of the acoustic reflector 10, and to facilitate the connection with the vertical frame 30 in the same number as the vertical frame 30 It is provided. The support 11 is provided in the height direction of the acoustic reflection plate 10 on the rear surface of the acoustic reflection plate 10, that is, the direction from the lower left side to the upper right side in FIG. 3.

Fastening the connecting bracket 12 on the upper portion of each of the support 11, and by connecting the lower end of the connecting bracket 12 and the vertical frame 30, respectively, the vertical frame 30 and the sound reflection plate 10 This hinge is connected.

Meanwhile, at least one of the connection brackets 12 may be provided with a goniometer 13. As shown in FIG. 3, among the connecting brackets 12 fastened to the respective supports 11, preferably, the scale is shown at a predetermined angle on the annual bracket 12 located at the outermost side, or a separate goniometer can be fastened. Can be. In addition, the guide 32 is shown in the vertical frame 30 adjacent to the goniometer 13, it is possible to easily recognize the rotation angle when the acoustic reflector 10 rotates.

The main shaft 41 is rotatably provided at the rear of the acoustic reflector 10.

The bearing block 14 is fastened to the upper surface of each support 11 at intervals from the connection bracket 12, and the main shaft 41 is provided through the bearing blocks 14.

Meanwhile, the handle 42 is detachably provided at an end of the main shaft 41. Since the handle 42 is provided, the handle 42 can be rotated to rotate the main shaft 41, and when the main shaft 41 is not rotated, the handle 42 can be stored separately from the main shaft 41. At this time, the handles are preferably provided at both ends of the main shaft (41).

Arm 51 is connected to the main shaft 41 at the bottom. The arm 51 is provided in plural with the same length, and fastens the lower end of the arm 51 to the main shaft 41 so as to rotate simultaneously with the main shaft 41 at regular intervals on the main shaft 41.

One end of the connecting rod 52 is linked to the other end of the arm 51, and the other end thereof is linked to the middle of the vertical frame 30. The connecting rod 52 is formed in a 'T' shape, as shown in Figure 3, the upper end is rotatably connected to the vertical frame 30, the lower end is hinged to the upper end of the arm 51 do.

Therefore, the vertical frame 30, the sound reflector 10, the arm 51 and the connecting rod 52 is a four-section link, and rotates the lower end of the arm 51 as an axis to adjust the sound The reflector 10 is rotated.

Meanwhile, the arm 51 and the connecting rod 52 are provided in plural. Since the arm 51 and the connecting rod 52 are disposed at the rear surface of the acoustic reflection plate 10 at intervals, the rotation force is evenly applied to the entire length of the acoustic reflection plate 10 when the acoustic reflection plate 10 is rotated. I can deliver it. That is, as shown in Figure 3, by arranging a plurality of arms 51 to have the same length and arranged at intervals of the vertical frame 30, and fastening each end on the main shaft 41, the arm ( A connecting rod 52 is provided in the same number as 51 to connect the other end of the arm 51 and the vertical frame 30, respectively.

On the other hand, by rotating the handle 42 to rotate the main shaft 41, the acoustic reflector 10 can be rotated at a desired angle, but by returning to the original position by the load of the acoustic reflector 10, the acoustic reflector ( 10) It may not be possible to maintain the desired angle.

To this end, a fixing mechanism is provided to prevent the main shaft 41 from rotating arbitrarily.

The fixing mechanism includes a disk 43 fixed to the main shaft 41 and rotating together with the main shaft, and a stopper 60 for controlling the rotation of the disk 43.

Referring to FIG. 7, the disk 43 in which the stop groove 43a is repeatedly formed along the circumference is inserted and fixed in the main shaft 41.

The stopper 60 is selectively inserted into the stop groove 43a by the front end of the stopper rod 62 provided in the stopper 60, thereby preventing the main shaft 41 from rotating arbitrarily. The stopper 60 is, for example, a stopper housing 61, a stopper rod 62 penetrates the inside of the stopper housing 61 so as to be slidable, and the stopper rod 62. A spring 63 elastically supporting toward the disk 43 and a cam member 64 to allow the stopper rod 62 to be spaced or engaged with the disk 43.

The stopper housing 61 is provided on the rear surface of the acoustic reflection plate 10, and its position is adjacent to the disk 43.

The stopper rod 62 penetrates through the inside of the stopper housing 61 and is slidable toward the disk 43. The front end of the stopping rod 62 is selectively engaged with the disk 43, and the rear end of the stopping rod 62 is formed with a handle so that the user can easily operate the stopping rod 62.

The stopping rod 62 is elastically supported through the spring 63 so that the tip of the stopping rod 62 is selectively engaged with the disk 43. Therefore, in general, the stopper rod 62 is engaged with the disk 43 by the spring 63 to prevent the main shaft 41 from rotating and when the main shaft 41 needs to be rotated, The rear end of the stopper rod 62 is separated from the disc 43 by pulling 62).

At this time, the stop groove 43a has a square cross section, preferably a square, and the end of the stopping rod 62 has a stop surface whose cross section is in contact with the stop groove 43a and the stop groove 43a. It is preferable that the inclined surface that can be detached is formed so that the disk 43 can rotate in one direction but not in the opposite direction.

That is, as shown in FIG. 8, when the disk 43 rotates in the direction of ①, the stop groove 43a may push the inclined surface so that the stopping rod 62 may retreat in the direction of ① ′. When the 43 is rotated in the direction of ②, the stop groove 43a and the stop surface are in contact to prevent the rotation of the disk 43.

At this time, the stop surface and the inclined surface formed on the stopping rod 62 may be rotated in the direction in which the acoustic reflecting plate 10 is erected, so as not to rotate in the direction of laying the acoustic reflecting plate 10, the stopping At the tip of the rod 62, a stop surface is formed on the upper surface and an inclined surface is formed on the lower surface.

In addition, a cam member 64 may be provided to easily control the position of the stopper rod 62. That is, when the cam member 64 is fastened to the stopper rod 62, and the operating surface of the cam member 64 is in contact with the protrusion 61a formed at the stopper housing 61, the stopper rod 62 is closed. When the tip portion of the stopping rod 62 is retracted from the stop groove 43a and the operating surface of the cam member 64 is separated from the protrusion 61a of the stopper housing 61, the tip portion of the stopping rod 62 is retracted. Is inserted into the stop groove 43a to prevent the disk 43 from rotating.

In addition, the fixing mechanism is preferably provided at both ends of the main shaft (41).

Looking at the operation of the non-powered angle adjusting device for the acoustic reflection plate of the stage according to an embodiment of the present invention having the configuration as described above with reference to the accompanying drawings.

In order to rotate the acoustic reflector 10 in a state substantially perpendicular to the ground in the state shown in FIG. 6 in a state in which the acoustic reflector 10 is substantially parallel to the ground as shown in FIG. By rotating 41, the angle of the sound reflection plate 10 is adjusted.

First, when the angle adjusting device for the acoustic reflector of the stage is elevated to the desired position on the stage by adjusting the length of the hanger wire 21, the main shaft 41 is rotated to rotate the acoustic reflector 10 at the desired angle.

For example, in the state of FIG. 4, when the handle 42 is coupled to the main shaft 41 and the handle 42 is rotated clockwise, the main shaft 41 and the arm 51 also rotate clockwise.

When the arm 51 rotates in the clockwise direction, the size of the angle between the arm 51 and the connecting rod 52 increases, and the size of the angle between the arm 51 and the acoustic reflection plate 10 decreases, and the acoustic reflection plate ( 10) rotates counterclockwise to a state as shown in FIG.

Subsequently, when the handle 42 is rotated clockwise, the acoustic reflector 10 can be brought into a state substantially perpendicular to the ground, as shown in FIG.

The user can stop the handle 42 at a desired angle in the middle of the state shown in FIG. 4 and the state shown in FIG. 6, thereby rotating the acoustic reflector 10 at a desired angle.

On the contrary, in order to make the acoustic reflector 10 horizontal to the ground in the state shown in FIG. 6 in the state shown in FIG. 4, when the handle 42 is rotated counterclockwise, the acoustic reflector 10 is reversed as described above. ) Rotates clockwise. When the rotating sound reflecting plate 10 is rotated by a desired angle, the sound reflecting plate 10 may be stopped by stopping the manipulation of the handle 42.

On the other hand, since the sound reflector 10 is rotatably connected to the middle of the vertical frame 30, if the external force is not applied, the sound reflector 10 will be rotated to be horizontal.

At this time, by operating the fixing mechanism to fix the angle of the sound reflection plate 10 rotated to a desired position.

In general, the stopper rod 62 is advanced toward the disk 43, and the tip portion of the stopping rod 62 is inserted into the stop groove 43a of the disk 43. Since the 43 may not rotate by the stopper rod 62, the acoustic reflector 10 may maintain an angle with respect to the vertical frame 21.

In this state, the stopper rod 62 is reversed to rotate the sound reflection plate 10 at a desired angle in a state where the tip portion of the stopper rod 62 is spaced apart from the stop groove 43a. That is, when the stopper rod 62 is reversed and rotated so that the operating surface of the cam member 64 is in contact with the protrusion 61a of the stopper housing 61, the tip of the stopper rod 62 Since it is possible to maintain the separated state from the stop groove (43a), it is possible to adjust the angle of the acoustic reflector 10 by rotating the main shaft (41).

On the other hand, when the main shaft 41 is rotated in the direction in which the sound reflecting plate 10 is erected, the stop groove 43a is inclined surface of the stopping rod 62 even if the stopper rod 62 is not reversed and fixed. Since the stopping rod 62 may be reversed by contacting the stopper rod 62, the stopping rod 62 may not be reversed and fixed separately.

1 is a front view of a non-powered angle adjusting device for the acoustic reflector of the stage according to the prior art.

Figure 2 is a side view of the non-powered angle adjusting device for the acoustic reflector of the stage according to the prior art.

Figure 3 is a perspective view of a non-powered angle adjusting device for the acoustic reflector of the stage according to an embodiment of the present invention.

4 to 6 is a side view showing the operating state of the non-powered angle adjusting device for the acoustic reflector of the stage of FIG.

7 is an enlarged perspective view of the fixing device of the non-powered angle adjusting device for the acoustic reflection plate of the stage of FIG.

Figure 8 is a side view showing the operating state of the fixing mechanism of the non-powered angle adjusting device for the acoustic reflector of the stage of Figure 3;

Description of the main symbols in the drawings

10: sound reflection board 11: support

12: connecting bracket 13: goniometer

14: bearing block 21: hanger wire

22: loop 30: vertical frame

31: connection 32: instructions

41: spindle 42: handle

43: disc 43a: stop groove

51: arm 52: connecting rod

60: stopper 61: stopper housing

61a: protrusion 62: stopping rod

63: spring 64: cam member

111: sound reflection plate 112: drive motor

113: reducer 114: drum

115: roller 116: rope

121: hanger wire 131: vertical frame

Claims (5)

In the angle adjusting device for the acoustic reflector of the stage for adjusting the angle of the acoustic reflector 10 for the stage rotatably connected to the lower end of the vertical frame 30 hanging on the ceiling of the stage using a hanger wire (21), The vertical frame 30 is provided in plurality and arranged in a straight line, each upper end is connected to the lower end of the hanger wire 21 connected at intervals on the ceiling of the stage, The acoustic reflector 10 is hingedly connected to the lower end of the vertical frame 30 through a plurality of connecting brackets 12 provided at intervals on the rear surface, and rotatably provided with respect to the vertical frame 30. A main shaft 41 rotatably provided on a rear surface of the sound reflection plate 10 so as to be parallel to a hinge axis connecting the vertical frame 30 and the sound reflection plate 10, An arm 51 having one end fixed to the main shaft 41 so as to rotate simultaneously with the main shaft 41; A connecting rod 52 having one end hinged to the other end of the arm 51 and the other end hinged to the vertical frame 30; A non-powered angle adjusting device for the acoustic reflection plate of the stage, characterized in that it comprises a fixing mechanism which is provided on the rear of the acoustic reflection plate 10 to maintain the rotation angle of the main shaft (41). The method of claim 1, The end of the main shaft 41 is a non-powered angle adjusting device for the acoustic reflection plate of the stage, characterized in that the handle 42 is further detachably coupled to rotate the main shaft (41). The method of claim 1, The connection bracket 12 is a non-powered angle adjusting device for the sound reflection board of the stage, characterized in that formed along the center of gravity line in the vertical direction of the sound reflection plate (10). The method of claim 1, The fixing mechanism, A disk 43 inserted into the main shaft 41 and fixed to the outer circumferential surface, and having a plurality of stop grooves 43a formed at intervals; A stopper rod 62 is provided to be slidably on the rear surface of the acoustic reflection plate 10, and a stop surface and an inclined surface are formed at a tip thereof so that the stop surface contacts the stop groove to maintain the rotation angle of the main shaft 41. , Non-powered angle adjusting device for the acoustic reflection plate of the stage, characterized in that it comprises a spring (63) for elastically supporting the leading end of the stopper rod (62) as a stop groove. The method of claim 4, wherein A cam member 64 having a working surface protruding in the sliding direction of the stopper rod 62 is fixed to the stopper rod 62. The stopper housing 61 in which the stopping rod 62 is accommodated is provided with a protrusion 61a in contact with the operating surface selectively. When the operating surface is in contact with the projection, the tip end portion of the stopper rod 62 is a non-powered angle adjusting device for the acoustic reflection plate of the stage, characterized in that separated from the stop groove (43a).

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