JP2015155616A - door structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door structure which can prevent an excessive increase of a pressure difference between both sides of a door even if not operating a handle.

SOLUTION: A door 1 can be opened by operating a lever handle 30. An opening 11 is formed through the door 1. The door 1 comprises: a plurality of vanes 40 which are rotatably pivoted to the opening 11; an opening/closing mechanism 50 which opens and closes the opening 11 by synchronously rotating a plurality of the vanes 40; an energization mechanism 60 which is connected to the opening/closing mechanism 50, and energizes the vanes 40 to a direction in which the opening 11 is closed; and a handle linking mechanism 70 which does not connect the lever handle 30 and the opening/closing mechanism 50 in a state that the lever handle 30 is not operated, connects the lever handle 30 and the opening/closing mechanism 50 when the lever handle 30 is operated, and rotates the vanes 40 to a direction in which the opening 11 is opened.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to a door structure for adjusting pressure.

Conventionally, a pressurized smoke-proof facility may be installed in a room for getting on and off an emergency elevator. A wall of a fire prevention compartment is provided between the attached room and the corridor, and a door for entering and exiting the attached room is provided on this wall.
This pressurized smoke proofing equipment pressurizes the room and supplies fresh air to the attached room when a fire occurs, thereby preventing the fire smoke from entering the attached room. Is.

  However, in such a pressurized smoke-proof facility, driving the pressurized fan increases the differential pressure between the attached room and the corridor, which may prevent the attached door from being opened.

  Therefore, a structure has been proposed in which an opening is provided in the door and a differential pressure relaxation mechanism is provided in the opening (see Patent Document 1). That is, the differential pressure relaxation mechanism includes a movable body that is rotatably supported in the opening, and the rotation shaft of the movable body is urged in a direction in which the movable body is always closed by the urging device. The movable body is provided with a latch for fixing the operating body to the wall and a latch for fixing the movable body to the door. These latches are connected to the door knob via a transmission drive mechanism, and the door knob door. It is released by opening operation.

  According to the door structure shown in Patent Document 1, by opening the door knob, the differential pressure relief mechanism is released to eliminate the differential pressure, and the door can be easily opened by removing the door latch.

Japanese Patent Laid-Open No. 7-259407

  However, in the door structure shown in Patent Document 1, the movable body does not rotate even if a large differential pressure is generated between the attached room and the corridor unless the door knob is opened. For this reason, the pressure in the attached room is greatly increased, and the ceiling material in the attached room and the door of the emergency elevator may be damaged.

  An object of this invention is to provide the door structure which can prevent that the differential pressure | voltage of both sides of a door becomes large too much, even when not operating a handle.

  The door structure according to claim 1 is a structure of a door (for example, door 1 to be described later) that can be opened by operating a handle (for example, a lever handle 30 to be described later). (For example, an opening 11 described later) is provided, and a plurality of blades (for example, blades 40 and 40A described later) rotatably supported in the opening and the plurality of blades are rotated in synchronization. And an opening / closing mechanism (for example, an opening / closing mechanism 50 described later) and an urging mechanism (for example, described later) that is connected to the opening / closing mechanism and urges the blade in a direction to close the opening. In a state where the urging mechanism 60) and the handle are not operated, the handle and the opening / closing mechanism are not connected, and when the handle is operated, the handle and the opening / closing mechanism are connected and the opening is opened. A handle chain that rotates the blade in a direction to open the part Mechanism (e.g., the handle interlocking mechanism 70 described later), characterized in that it comprises a a.

According to this invention, when the handle is not operated, the handle and the opening / closing mechanism are not coupled by the handle interlocking mechanism. Therefore, only the opening / closing mechanism and the urging mechanism operate. In this case, when the differential pressure on both sides of the door reaches a predetermined value, the blade is pushed by this differential pressure, and the blade rotates against the urging force of the urging mechanism, and the opening is opened. Thereby, air distribute | circulates through this opening part, and the differential pressure | voltage of the door both sides falls.
Thereafter, when the differential pressure on both sides of the door becomes less than a predetermined value, the blade 40 is rotated by the biasing force of the biasing mechanism, and the opening is closed.

  On the other hand, when the passerby grasps and operates the handle, the handle and the opening / closing mechanism are connected by the handle interlocking mechanism. In this case, the blade rotates in conjunction with the handle, and the opening is opened. Thereby, air distribute | circulates through this opening part, and the differential pressure | voltage of the door both sides falls.

  As described above, when there is a differential pressure between the attached room and the corridor, the door opening is opened regardless of whether or not the handle is operated. It is possible to prevent an increase in pressure in the attached chamber.

  According to the present invention, it is possible to prevent the differential pressure on both sides of the door from becoming excessively large even when the handle is not operated.

It is the perspective view which looked at the door concerning one embodiment of the present invention from the corridor side. It is the front view which looked at the lower part of the door concerning the embodiment from the attached room side. FIG. 2 is an enlarged view of a portion surrounded by an alternate long and short dash line A in FIG. 1. It is a perspective view of the door opening and closing mechanism according to the embodiment. It is the perspective view of the urging | biasing mechanism of the door which concerns on the said embodiment, and the side view of an opening / closing mechanism. It is a figure for demonstrating operation | movement of the urging | biasing mechanism of a door and the opening / closing mechanism which concerns on the said embodiment. It is a top view of the handle interlocking mechanism of the door which concerns on the said embodiment. It is a figure for demonstrating operation | movement of the handle interlocking mechanism of the door which concerns on the said embodiment. It is a side view of the opening and closing mechanism of the door which concerns on the modification of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Drawing 1 is a perspective view which looked at door 1 concerning one embodiment of the present invention from the corridor 2 side.
The door 1 is provided, for example, on a wall 4 of a fire prevention compartment that partitions a corridor 2 and an emergency elevator bay 3.
The door 1 is opened toward the attached chamber 3 side by operating a lever handle 30 as a handle.

  The door 1 includes a plate-shaped door body 10 having an opening 11 penetrating the front and back at a lower portion, a plurality of blades 40 rotatably supported by the opening 11, and the plurality of blades 40. And a lever handle 30 for projecting and retracting the latch 31.

FIG. 2 is a front view of the lower part of the door 1 as viewed from the side of the attached room 3.
The pressure adjustment mechanism 20 is connected to the opening / closing mechanism 50 that opens and closes the opening 11 by rotating the plurality of blades 40 synchronously, and the blade 40 is attached to the opening / closing mechanism 50 in the direction of closing the opening 11. In a state where the biasing mechanism 60 and the lever handle 30 are not operated, the lever handle 30 and the opening / closing mechanism 50 are not coupled, and when the lever handle 30 is operated, the lever handle 30 and the opening / closing mechanism 50 are not connected. And a handle interlocking mechanism 70 that rotates the blades 40 in a direction to open the opening 11.

FIG. 3 is an enlarged view of a portion surrounded by a one-dot chain line A in FIG. FIG. 4 is a perspective view of the opening / closing mechanism 50.
As shown in FIG. 2, the plurality of blades 40 are arranged side by side in the height direction.
Each blade 40 is provided on one of the pair of rotating shafts, a slat 41 extending in a plate shape in the horizontal direction, a pair of rotating shafts 42 provided on both ends in the length direction of the slat 41 and extending substantially horizontally. Pulley 43.

The opening / closing mechanism 50 includes a rotating belt 51 wound between the pulley 72 and the pulleys 43 of the blades 40.
Therefore, in this opening / closing mechanism 50, when the rotating belt 51 rotates, the pulley 72 and each pulley 43 rotate synchronously, and as a result, the blades 40 open and close synchronously.
Here, the pair of rotating shafts 42 is provided on the lower end side of the slat 41. In the opening / closing mechanism 50, when the rotating shaft 42 rotates, the upper side of the blades 40 opens and closes (see FIGS. 5 and 6).

FIG. 5 is a perspective view of the urging mechanism 60 and a side view of the opening / closing mechanism 50.
The biasing mechanism 60 is supported by being suspended by a winding shaft 61 connected to a pulley 72, a wire 62 attached to the outer peripheral surface of the end portion of the winding shaft 61 so as to be capable of winding, and the wire 62. A weight 63.

  When the pressure in the attached room 3 is not so high as compared with the pressure in the hallway 2, that is, when the differential pressure on both sides of the door 1 is less than a predetermined value, as shown in FIG. Since 63 is pulled downward, the urging force acts on the winding shaft 61 in the direction of closing the opening 11, and the opening 11 is closed as shown in FIG. 5B.

  From this state, when the pressure in the attached chamber 3 becomes higher than the pressure in the hallway 2 and the differential pressure on both sides of the door 1 exceeds a predetermined value, the blade 40 is pushed by this differential pressure, and the urging force by the weight 63 is applied. The blades 40 are rotated in resistance, and the opening 11 is opened. That is, as shown in FIG. 6B, the blade 40 rotates, and the rotating belt 51, the pulley 72, and the winding shaft 61 rotate as the blade 40 rotates. At this time, as shown in FIG. 6A, the wire 62 is wound around the winding shaft 61 and the weight 63 is raised.

  As described above, by changing the weight of the weight 63, the threshold value of the differential pressure at which the blade 40 operates can be set as appropriate.

FIG. 7 is a plan view of the handle interlocking mechanism 70.
The handle interlocking mechanism 70 is provided perpendicularly to the rotation shaft 32 of the lever handle 30 and is rotatably held, and is provided on one end side of the rotation shaft 71 and connected to the opening / closing mechanism 50. Pulley 72, a first bevel gear 73 provided on the other end of the rotary shaft 71, and a lever handle 30 that is integrated with the lever handle 30 so as to be movable along the rotary shaft 32. A meshed second bevel gear 74 and a spring 75 that urges the second bevel gear 74 in a direction away from the first bevel gear 73 are provided.

When the lever handle 30 is not operated, the second bevel gear 74 is separated from the first bevel gear 73 by the spring 75, so that the lever handle 30 is not connected to the opening / closing mechanism 50.
On the other hand, when the lever handle 30 is operated, the lever handle 30 is pushed into the door body 10 as shown in FIG. Then, the second bevel gear 74 moves while resisting the spring 75 and meshes with the first bevel gear 73. As a result, the lever handle 30 is connected to the opening / closing mechanism 50.

The operation of the door 1 is as follows.
First, it is assumed that the door 1 is not opened. Specifically, this is the case where the evacuees have not yet reached the attached room 3 after the pressurized smoke-proofing equipment has been activated.
In this case, since no force is applied to the lever handle 30, the first bevel gear 73 and the second bevel gear 74 are not meshed, and only the opening / closing mechanism 50 and the urging mechanism 60 operate.

  Therefore, in this case, when the differential pressure between the attached chamber 3 and the hallway 2 reaches a predetermined value, the blade 40 is pushed by this differential pressure, and the blade 40 rotates against the urging force by the weight 63, The opening 11 is opened. Thereby, air flows through this opening part 11, and the differential pressure | voltage of the both sides of the door 1 falls.

  Thereafter, when the pressure difference between the attached chamber 3 and the corridor 2 becomes less than a predetermined value, the blade 40 is rotated by the urging force by the weight 63 of the urging mechanism 60 and the opening 11 is closed. .

Next, it is assumed that the door 1 is opened. Specifically, it is a case where the evacuee reaches the attached room in a state where the pressurized smoke-proof equipment is activated.
In this case, the evacuee grabs the lever handle 30 and pushes the lever handle 30 toward the door body 10 side. Then, the second bevel gear 74 moves while resisting the spring 75 and meshes with the first bevel gear 73. Next, when the evacuee turns the lever handle 30, the second bevel gear 74, the first bevel gear 73, the rotating shaft 71, the pulley 72, the rotating belt 51, and the pulley 43 rotate, and the blade 40 also rotates. The opening 11 is opened. Thereby, air flows through this opening part 11, and the differential pressure | voltage of the both sides of the door 1 falls.

  Thereafter, when the evacuee passes through the door 1, the lever handle 30 is moved away from the door body 10 by the biasing force of the spring 75, and returns to the original position. At the same time, the blade 40 is rotated by the urging force of the weight 63 of the urging mechanism 60, and the opening 11 is closed.

According to this embodiment, there are the following effects.
(1) When a differential pressure is generated between the attached room 3 and the hallway 2, the opening 11 of the door 1 is opened regardless of whether the lever handle 30 is operated or not. It is possible to prevent the differential pressure from becoming excessively large and to prevent the pressure increase in the attached chamber 3.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the present embodiment, the pair of rotating shafts 42 is provided on the lower end side of the slat 41, and the rotating shaft 42 rotates to open and close the upper side of the blade 40. However, the present invention is not limited to this. That is, as shown in FIG. 9, a pair of rotating shafts 42 may be provided on the upper end side of the slat 41, and the rotating shaft 42 may rotate to open and close the lower side of the blade 40A. Even if it does in this way, there exists an effect similar to the above-mentioned (1).

DESCRIPTION OF SYMBOLS 1 ... Door 2 ... Corridor 3 ... Attached room 4 ... Wall 10 ... Door main body 11 ... Opening part 20 ... Pressure adjustment mechanism 30 ... Lever handle (grip)
31 ... Latch 32 ... Rotating shaft 40, 40A ... Blade 41 ... Slat 42 ... Rotating shaft 43 ... Pulley 50 ... Opening / closing mechanism 51 ... Rotating belt 60 ... Biasing mechanism 61 ... Winding shaft 62 ... Wire 63 ... Weight 70 ... Handle interlock Mechanism 71 ... Rotating shaft 72 ... Pulley 73 ... First bevel gear 74 ... Second bevel gear 75 ... Spring

Claims (1)

It is a door structure that can be opened by operating the handle,
The door is provided with an opening,
A plurality of blades pivotally supported in the opening,
An opening and closing mechanism for opening and closing the opening by rotating the plurality of blades synchronously;
An urging mechanism coupled to the opening / closing mechanism and urging the blade in a direction of closing the opening;
When the handle is not operated, the handle and the opening / closing mechanism are not connected, and when the handle is operated, the handle and the opening / closing mechanism are connected to open the opening. A door structure comprising: a handle interlocking mechanism that rotates the blades.

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