JP2558375Y2 - Theater hall chairs - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair for a theater hall capable of improving the acoustic characteristics in a theater hall.

[0002]

2. Description of the Related Art Generally, in a theater in which a chair having a conventional structure is installed, the reverberation characteristic in the theater changes depending on the seating rate of spectators. This is due to the large sound absorption of the costumes and the like of the audience, and the reverberation time when the seat is full is shorter than the reverberation time when the seat is empty. Therefore, conventionally, when performing a music performance, there is a difference in performance sound between a rehearsal performance performed when the seat is vacant and a production performance performed when the seat is full, resulting in an inconvenience such as the performance of the performer during the performance performance.

[0003] The applicant of the present invention has proposed a technique disclosed in Japanese Utility Model Laid-Open Publication No. 2-16140.
Japanese Patent Laid-Open Publication No. H11-157, proposes a chair for a theater hall that can solve the above-mentioned disadvantages. This theater hall chair is shown in FIGS.
The structure shown in FIG. That is, the seat 22 provided at the lower part of the backrest 21 has a fixed seat 23 fixed substantially horizontally to the lower part of the backrest 21, and a substantially central portion thereof positioned at the front end of the fixed seat 23 by the shaft 24. The movable seat 25 is pivotally attached to the front and rear so as to be able to be turned upside down. The movable seat 25 is tilted substantially horizontally on the fixed seat 23 to allow the audience to sit.

The backrest 21 is manufactured by fixing a cushion 21b to almost the entire front surface of a back plate 21a and covering the surface with a decorative cloth 21c.
The fixed seat 23 of the seat 22 is formed by fixing the cushion body 23b to the entire upper surface of the lower plate 23a fixed substantially horizontally to the lower portion of the back plate 21a, and covering the surface of the cushion body 23c with the close 23c as described above. . The movable seat 25 of the seat 22
Is a surface (a part of the back surface) of the core plate 25a whose center portion is pivotally mounted on the shaft 24 in contact with the close 23c of the fixed seat 23.
And the cushion body 25b on the entire surface on the opposite side.
And its surface is covered with a cloth 25c. The back plate 21a, the lower plate 23a, and the shaft 24 are fixed between a pair of left and right side plates 26, 26 (which overlap in the drawing) fixed to the floor, and the upper surface of the side plate 26 is an armrest. .

[0005] The cushion bodies 21b, 23b, 25b are
It is made of a material having excellent elasticity and sound absorption such as polyurethane and glass wool, and the cloths 21c, 23c and 25c are excellent in sound absorption. Also, the rear plate 21a and the lower plate 23
a and the side plate 26 are made of metal, wood, plastic, or the like, and are closed 21c, 23c, 25c.
The exposed surface which is not covered with the like has low sound absorption and reflects sound.

The chair for a theater hall having the above-described structure is used by moving the movable seat 25 on the fixed seat 23 as shown in FIG. In this use state, the close 23c of the fixed seat 23 and the close 25c on the back surface of the movable seating resistance 25 come into contact with each other and are hidden inside the seat 22, so that sound is not absorbed. When the audience leaves the chair and becomes vacant,
The movable seat 25 stands upright about the shaft 24 as shown in FIG. In this state, the closing 23
Then, the cloth 25c on the back surface of the movable seat 25 is separated from the movable seat body 25c so as to absorb sound from each other. As a result, the sound absorption when the seat is vacant is improved, and the difference in the sound absorption volume between the seated state and the vacant state and the difference in the reverberation time are reduced.

[0007]

As will be understood from the above, in the above-mentioned theater hall chair, the fixed seat 2
3 and the cloth 2 on the back surface of the movable seat body 25, which is in contact with the cloth 23c when seated.
The width of 5c (sound absorbing surface) determines the width of change of the sound absorbing surface,
Since the seat 22 of the chair for the theater hall is of a half-fold type that is folded in half from the center, the above-mentioned close 23
There is a complaint that the area of c and 25c cannot be increased, and therefore the additional sound absorbing power for reducing the difference in sound absorption volume between when seated and when vacant cannot be increased. In the chair for the theater hall described above, the movable seat 25 when the seat is vacant.
Rises to make it easier for the audience to pass, but this is not sufficient because only the front part of the seat 22 stands up. Also,
There are many problems in that the movement of the movable seat 25 is opposite to the movement of the movable seat of a general chair.

[0008] This invention relates to the movement of the movable seat, while increasing the additional sound absorbing power while minimizing the uncomfortable feeling with the general chair, to reduce the variation width of the reverberation time between when the seat is occupied and when the seat is vacant, and It is an object of the present invention to provide a chair for a theater hall, which can widen the space.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a seat provided at a lower portion of a backrest, which is attached to a lower portion of the backrest by pivoting a rear end thereof so that the seat can be turned up and down. The movable seat is pivoted at one end to the front end of the movable seat, and is mounted to be movable up and down forward and backward. A movable seat body that enables the movable seat body to be provided with an urging means for raising the movable seat body with respect to the movable seat, and a front face of the backrest and a movable seat body that is tilted forward. Almost all of the upper surface of the seat and both the front and back surfaces of the movable seat are made of a sound absorbing material.

[0010]

[Function] The seat is constructed by pivotally connecting one end of a movable seat body to the front end of a movable seat, and the entire seat is divided into two parts in the thickness direction from its front end to the rear end to be a folding type. The areas of the upper surface (sound absorbing surface) of the movable seat and the lower surface (sound absorbing surface) of the movable seat that come into contact with each other when seated are maximized, and the additional sound absorbing power is increased to increase the reverberation time between seated and empty seats. Can be reduced. In addition, the movable seat can be raised on the movable seat, and then the movable seat can be raised to widen the passage. The movable seating body that has been raised with the movable seat and widened the passage is urged by the urging means and pushes the backrest at its tip, so after the audience has passed,
The movable seat falls down reliably, and the movable seat body automatically stands up with respect to the movable seat body.

[0011]

1 to 3 show one embodiment of the present invention. In the drawings, reference numeral 1 denotes a backrest. The backrest 1
The cushion body 1b is fixed to almost the entire front surface of the back plate 1a (the left side is the front and the right side is the back in FIGS. 1 and 2), and the surface is covered with a decorative cloth 1c. It is fixed between the side plates 2 and 2 (which overlap in the figure). A seat 3 is provided below the backrest 1. The seat 3 includes a movable seat 4 and a movable seat 5. The movable seat 4 is formed by fixing a cushion body 4b to almost the entire upper surface of a receiving plate 4a and covering the surface with a cloth 4c.
The rear end of a is pivotally mounted on a shaft 6 and is provided so as to be able to be turned up and down. The shaft 6 is installed horizontally between the side plates 2 and 2. The side plate 2 is provided with a stopper 2a, which locks the movable seat 4 tilted forward to stabilize it substantially horizontally.
Further, the movable seating body 5 is formed by fixing the cushion bodies 5b and 5c to almost the entire front and back surfaces of the core plate 5a and covering the surfaces thereof with the cloths 5b and 5e. One end of the core plate 5a is pivotally attached to the shaft 7 so as to be vertically movable.

The movable seat 5 is tilted substantially horizontally on the movable seat 4 which is tilted substantially horizontally forward to enable seating. Conventionally, cushion bodies 1b, 4b, 5b, 5c
Is made of a material such as polyurethane or glass wool excellent in elasticity and sound absorption, and the cloths 1c, 4c, 5d and 5e are excellent in sound absorption. Also, a back plate 1a, a receiving plate 4a,
The core plate 5a and the side plate 2 are made of, for example, metal, wood, plastic, or the like having low sound absorption. Therefore, the exposed surfaces of the back plate 1a and the receiving plate 4a that are not covered with a sound-absorbing material such as cloth reflect sound well.

Reference numeral 8 denotes an urging means. The urging means 8 is for raising the movable seat body 5 with respect to the movable seat 4, and is attached to the seat 3. As the urging means 8, a hydraulic / spring type dashpot is used. In this dashpot, a valve 12 is provided in a portion of the flow 11a of the piston 11 in the cylinder 10 in which the oil 9 is filled, and the piston rod 13 is extended between the cylinder 14 and a flange 14 attached to the piston rod 13. The compression spring 15 acting as described above is provided.

The dashpot is a cylinder 1
0 and the piston rod 13 are connected to the movable seat 4 and the other is connected to the movable seat 5 with pins or the like. When the movable seat 5 is dropped on the movable seat 4, , The valve 12 is opened to facilitate the contraction movement of the piston 11, and when the spectator moves away from the movable seating body 5 that has fallen on the movable seat 4, the valve 12 is closed, and the force of the compression spring 15 is applied. A resistance is applied to the extension operation, and the movable seat body 5 is slowly erected.

The dash pot uses a tension spring,
There are various types, such as a type in which the valve 12 is provided below the piston 11 and a rotary type. There is no restriction on the structure or type of the urging means, and the urging means is not limited to the dashpot. A sound-absorbing material such as closet is also attached to the exposed surfaces of the side plate 2, the back plate 1a, and the receiving plate 4a as necessary.

The operation of the theater hall chair configured as described above will be described. The solid line in FIG. 1 shows the vacant seat state, in which the movable seat 4 is tilted substantially horizontally forward, and the movable seat body 5 is standing almost vertically by the action of the urging means 8. In this state, the cloth 1c of the backrest 1 and the movable seat 4
4c of the movable seat body 5 and 5d and 5 of the movable seat 5
The entire surface of e absorbs the sound. Among them, the close 4c of the movable seat 4 and the close 5e of the movable seat body 5 have a wider sound absorbing surface than a normal chair to increase the sound absorbing power and increase the additional sound absorbing power. I do.

In order to take a seat, the movable seat 5 is moved to the position 2 in FIG.
The user sits down on the movable seat 4 as indicated by the chain line. The sound absorbing power in this case is the same as that of a normal chair. Also, when passing in front of the chair, the movable seat 5 is lowered onto the movable seat 4,
The entire seat 3 is erected on the axis 6 as a fulcrum as shown by the solid line in FIG. When you release your hand from seat 3 after passing, seat 3
1 falls down by its own weight, and the movable seat body 5 stands up with respect to the movable seat 4 by the action of the urging means 8, and the state shown in FIG. 1 is obtained. When the seat 3 falls forward, the front end (lower end) of the movable seating body 5 pushes the backrest 1 with the force of the urging means 8, so that the seat 3 can reliably fall forward.

[0018]

As described above, the chair for a theater hall according to the present invention has the above-mentioned structure, so that the area of the upper surface of the movable seat and the sound absorbing surface of the back surface of the movable seat that come into contact with each other when seated are seated. Can be maximized to increase the additional sound absorbing power. Therefore, the difference between the sound absorption volume when the seat is occupied and when the seat is vacant, and the difference in the reverberation time are reduced, and the rehearsal performance performed when the seat is vacant can be performed in the full performance. In addition, the seat can be raised to widen the aisle and pass in front of the chair without hindrance.In addition, the movable seating body is automatically erected by the urging means, which saves time and makes the seat fall forward. There is an effect that is surely performed.
In addition, the movement of the movable seat is the same as that of a general chair,
Discomfort can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a chair for a theater hall according to the present invention in an empty seat state.

FIG. 2 is a cross-sectional view showing a state in which the passage is widened by raising the entire seat.

FIG. 3 is a schematic sectional view showing an example of a biasing means.

FIG. 4 is a sectional view of a conventional theater hall chair in an empty seat state.

FIG. 5 is a cross-sectional view of a seated state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backrest 1c Close 3 Seat 4 Movable seat 4c Close 5 Movable seat 5d, 5e Close 8 Biasing means

Claims (1)

(57) [Scope of request for utility model registration] A seat provided at a lower portion of the backrest, a rear end pivotally attached to the lower end of the backrest and attached to the lower portion of the backrest so as to be able to pivot back and forth, and one end pivotally connected to a front end of the movable seat. A movable seat that is mounted so as to be able to be worn up and down freely, and is tilted substantially horizontally on a movable seat that is tilted substantially horizontally forward to enable seating. A biasing means for erecting the movable seat body with respect to the seat is provided, and the front surface of the backrest, the upper surface of the movable seat in the state of being tilted forward, and both the front and back surfaces of the movable seat body are substantially separated from each other. A chair for a theater hall, the entire surface of which is made of a sound absorbing material.