JPH05103843A - Door stopper and fireproof door - Google Patents

Abstract

PURPOSE:To provide a door stopper and fireproof door capable of being received surely normally in a room and operated surely in a fire. CONSTITUTION:A door stopper S is composed of a main body 1 mounted on a ceiling surface facing the upper surface of a door, a releasing lever 3 pivotably connected to the main body, a locking member 4 supported by one end of the releasing lever 3 to be locked by the upper surface of the door and an urging means 5 for urging normally the releasing lever 3 in the direction of locking the locking means 4 in the upper surface of the door. The other end of the releasing lever 3 is provided with a press part 6 for pivoting the releasing lever 3 against an urging force of an urging means 5 in the direction of releasing the locking means 4 from the upper surface of the door. The door stopper S thus constructed is used for a fireproof door.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door stopper for retaining a door on a ceiling surface and a fireproof door using the door stopper.

[0002]

2. Description of the Related Art Normally, in middle-rise and high-rise buildings such as condominiums, commercial buildings, and office buildings, as a fire prevention measure, if a fire should occur, fire or smoke should not reach the lower or upper floors. As shown in FIG. 7, the fire door 10 is provided at the entrance 31 of the elevator passage 30.

When the elevator is normally used, the fire door 10 is located on both sides of the entrance 31 of the elevator, and is folded into two in the storage chamber 20 of the wall body through the door stopper. Have been stored. If a fire should occur, the electromagnetic release releases the door stopper in response to a signal from a fire detector, etc.
The fire door 10 stored in a folded state starts to open due to the elastic force of the spring, extends to the front of the entrance 31 of the elevator passage 30, and finally closes the entrance 31 of the elevator passage 30 from both sides. Is configured.

[0004]

However, in the above-mentioned conventional fire door 10, the door release is electrically released by the electromagnetic release, and the door stopper is not mechanically released. , The fire door does not work well in case of fire due to malfunction, and
When the elevator is normally used, the fire door 10 may be activated to close the doorway 31 of the elevator passage 30.

Further, the electromagnetic release is attached to each of the front and rear door members 11 and 12 of the fireproof door 10 folded into two, and the electromagnetic releases at two locations are simultaneously operated. Therefore, the front and rear door members 11 of the fire door 10 may be opened at the same time, and the tip of the front door member 11 of the fire door 10 may hit the corner of the storage chamber 20, and the fire door 10 may not be opened and extended. There was also.

The present invention has been made in view of the above-mentioned problems, and a door stopper capable of reliably storing a fire door in a storage chamber during normal operation and capable of reliably operating the fire door when a fire occurs, and The purpose is to provide a fire door.

[0007]

Therefore, in the door stopper of the present invention, a main body portion attached to the ceiling surface facing the upper surface of the door, a release lever pivotally supported by the main body portion, and A locking means supported by one end of the release lever and locked on the upper surface of the door, and a biasing means for constantly biasing the release lever in a direction in which the locking means locks on the upper surface of the door. And pressing the release lever at the other end of the release lever in a direction to release the locking state of the locking means against the upper surface of the door against the biasing force of the biasing means. Providing a section is the solution.

Further, the fire door of the present invention is a fire door composed of two front and rear door members that can be opened at a desired angle from a state of being folded via a hinge, and a ceiling facing the upper surface of the rear door member. On the surface, a door stopper for locking the rear door member to the ceiling surface is attached to an end portion near the hinge portion, and the door stopper includes a main body portion attached to the ceiling surface and a main body portion. A release lever rotatably supported, a locking means supported by one end of the release lever and locked on the upper surface of the rear door member, and a locking lever for the release lever of the rear door member. And a biasing means for constantly biasing the locking lever on the upper surface, the release lever being provided at the other end of the release lever against the biasing force of the biasing means. Locking to the upper surface of the rear door member A pressing portion that rotates in a direction to release the locked state of the step is provided, and on the side surface near the hinge portion of the front door member, when both door members are opened at a desired angle from the folded state. Providing an operating portion that presses the pressing portion is a means for solving the problem.

[0009]

In the door stopper according to the present invention, by pressing the pressing portion at the other end of the release lever, the release lever is rotated against the biasing means, and the locking means at one end of the release lever becomes the rear door. The member is moved in a direction to release the locked state on the upper surface, and the locked state on the ceiling surface of the rear door member is released.

Further, in the fire door of the present invention, both door members are stored in the storage chamber in a folded state, and from this state, the front door member is locked to the ceiling surface by an electromagnetic release or the like. Is released, the front door member opens at a desired angle with respect to the rear door member by the spring of the hinge portion, etc., and the front door member extends out of the storage chamber and comes out, the operating portion of the front door member is released. Presses the pressing part of the door stopper, mechanically operates the door stopper to release the locked state of the rear door member, the rear door member is opened at a desired angle by the spring of the rear hinge part, and the entire fire door Comes out of the storage room.

[0011]

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

1 to 3 show a door stopper S according to the present invention. The same members as those shown in FIG. 7 are designated by the same reference numerals. This door stopper S
Is a device for holding the fire door 10 in the storage chamber 20 in a folded state. This door stopper S is a fire door 1
A box-shaped main body 1 attached to the ceiling surface of the storage chamber 20 facing the upper surface of 0, and an L-shaped release lever rotatably supported by a rotary shaft 2 provided inside the main body 1. Three
A stopper roller (locking means) 4 which is axially movably supported by one end 3a of the release lever 3 and is locked in a recess 16 on the upper surface of the fire door 10, and the release lever 3 which locks the stopper roller 4 Is provided with a spring 5 that constantly urges the upper surface of the fire door 10 in a direction in which it is locked. Then, at the other end 3b of the release lever 3, the release lever 3 is rotated in the direction of releasing the locked state of the stopper roller 4 with respect to the upper surface of the fire door 10 against the biasing force of the spring 4. A pressing portion 6 is provided.

As shown in FIG. 4, the door stopper S having the above structure has a fireproof door 10 which is stored in a folded state in a storage chamber 20 formed inside a wall beside the elevator passage 30.
Is attached to. That is, in the storage chamber 20, the fire door 10 configured by the front door member 11 and the rear door member 12 so as to be freely opened at a desired angle via the hinge portion 13, has the hinge portion at the rear end of the rear door member 12. It is stored in such a manner that it is rotatably supported between the ceiling surface and the floor surface of the storage chamber 20 via 14.

Of these, the main body portion 1 of the door stopper S is attached to the ceiling surface of the storage chamber 20 facing the hinge portion 13 on the upper surface of the rear door member 12. Then, the rear door member 12 is locked to the ceiling surface of the storage chamber 20 by locking the stopper roller 4 of the door stopper S in the recess 16 provided on the upper surface of the rear door member 12. Further, a stopper roller 7 that locks the front door member 11 is attached to the ceiling surface of the storage chamber 20 facing toward the tip of the upper surface of the front door member 11, and the stopper roller 7 is attached to the ceiling. The electromagnetic release 40 is configured to release the locked state of the front door member 11 to the upper surface. In addition, the electromagnetic release 40
Is configured to operate the stopper roller 7 in response to a signal from the fire detector. Further, the front door member 1
The front door member 11 is provided on the upper end of the side surface near the hinge portion 13 of FIG.
There is provided an operating part 15 for pressing the pressing part 6 of the door stopper S when the door is opened at a desired angle with respect to the rear door member 12.

Further, the hinge portion 13 has a built-in spring for urging the front door member 11 toward the rear door member 12 in the opening direction. Similarly, the rear door member 12
The hinge portion 14 has a built-in spring for urging the rear door member 12 in the opening direction. A similar storage chamber 20 is formed on the opposite side of the elevator passage, and the fire doors of the same structure are stored in a folded state.

Next, the operation of the fire door having the above structure will be described.

(1) During normal use of the elevator, as shown in FIG. 4, the fire door 10 is installed in the elevator passage 30.
It is stored in the storage chambers on both sides in a folded state and is held by the door stopper S and the electromagnetic release 40.

(2) In the unlikely event that a fire occurs, the electromagnetic release 40 is activated by a signal from the fire detector to pull up the stopper roller 7 from the front door member 11 to engage with the front door member 11. By releasing, the front door member 11 starts to open due to the biasing force of the spring. When the front door member 11 is rotated by a predetermined angle with respect to the rear door member 12, as shown in FIGS. 5 and 6, due to the reaction thereof, the operating portion 1 near the hinge portion 13 of the front door member 11 is moved.
5 is a door stopper S that locks the rear door member 12
The pressing portion 6 of is pressed.

(3) When the operating portion 15 of the door member 11 pushes the pushing portion 6 of the door stopper S, the release lever 3 mechanically pulls up the stopper roller 4 as shown in FIGS. 1 and 2. The engagement with the rear door member 12 is released, and the rear door member 12 is rotated in the opening direction about the hinge portion 14 as an axial center by the urging force of the spring. In this case, the operating portion 15 is configured to release the door stopper S and start the rotation of the rear door member 12 from the time when the front end surface of the front door member 11 does not contact the side wall surface of the storage chamber 20.
It is sufficient to set the operating conditions of. As a result, the electromagnetic release 40 first operates to start rotation of the front door member 11, and after that, the mechanical operation of the door stopper S causes the rear door member 12 to start rotation in a relay type. Therefore, there is no problem that the front end surface of the front door member 11 hits the side surface of the storage chamber 20 and the fire door 10 does not open smoothly, and the operation of the fire door 10 becomes reliable.

(4) The front door member 11 rotates 90 degrees around the hinge portion 13, and the rear door member 12 rotates 90 degrees around the hinge portion 14 in the opposite direction, so that the front doorway 31 of the elevator passage 30 is forwarded. Extending in an L shape in plan view (two-dot chain line in FIG. 4). On the other hand, the fire door 1 that is also stored in the storage chamber 20 on the opposite side with the fire door 10 and the elevator passage 30 in between.
0 is also opened by the above procedure, and both are in the elevator passage 3
The entrance 31 of 0 will be closed from both sides, and the function as a fire door will be exhibited.

According to this embodiment, the following effects are obtained.

(A) Since the door stopper S of the present embodiment is constructed so as to mechanically release the engagement with the rear door member 12 by utilizing the principle of leverage, as compared with the electromagnetic release, The engagement of the rear door member 12 can be reliably released without the risk of malfunction. Therefore, it can be said that the fire door 10 that combines the electromagnetic release with the door stopper S is excellent in safety because the fire door 10 operates reliably.

(B) The fire doors 10 housed in the storage chambers 20 on both sides of the elevator passage 30 are surely operated, so that both fire doors 10 are lifted.
It is possible to surely close the entrance / exit 31 of 0 and to surely exhibit the function as a fire door.

(C) The door stopper S is the operating portion 1
When used in combination with No. 5, it can be applied to an existing folding type fire door, so that the fire door having a wide range of application and excellent function can be provided at low cost.

(2) The door stopper S has a simple structure, is easy to manufacture, and is easily attached to the fire door. Therefore, compared with the case of only the conventional electromagnetic release, there is an advantage that it is advantageous in terms of construction and price.

Although the door stopper S having the above-described structure has been described as an example applied to a fire door, the scope of application of the door stopper is not limited to a fire door, and is used as a means for locking a normal door. You can do it.

[0027]

As described above, the present invention has the following excellent effects. (A) The door stopper according to the present invention includes a main body portion attached to a ceiling surface facing the upper surface of a door, a release lever pivotally supported by the main body portion, and one end of the release lever supported by the release lever. A configuration is provided that includes locking means that is locked to the upper surface of the door, and biasing means that constantly biases the release lever in the direction in which the locking means locks to the upper surface of the door. Since the release lever is provided at the end with a pressing portion that rotates in the direction of releasing the locking state of the locking means with respect to the upper surface of the door against the biasing force of the biasing means, Compared with an electromagnetic release or the like, the lever can be used to mechanically unlock the door, and the door can be reliably locked and unlocked. Further, since the door stopper has a simple structure, it is advantageous in terms of construction and price as compared with an electromagnetic release or the like. (B) In the fireproof door of the present invention, the door stopper is attached to the ceiling surface facing the upper surface of the rear door member, and the side surface of the front door member is opened at a desired angle from a state where both door members are folded. When the front door member is opened at a desired angle, the door stopper can be reliably operated and the rear door member can be unlocked because the operating portion that presses the pressing portion is provided. Therefore, as compared with the case where the fire door is opened by the electromagnetic release, by using the door stopper together, the fire door can be surely operated and the function as the fire door can be surely exhibited. Further, since it can be applied to an existing fire door, it is possible to provide a fire door having an excellent function at a low cost.

[Brief description of drawings]

FIG. 1 is a side sectional view of a door stopper showing an embodiment of the present invention.

FIG. 2 is a side sectional view of the door stopper.

FIG. 3 is a front sectional view of the door stopper.

FIG. 4 is a plan view showing a fire door using the door stopper.

FIG. 5 is a main part plan view showing the operation of the fire door.

FIG. 6 is a plan view of an essential part showing the operation of the fire door.

FIG. 7 is a schematic plan view showing fire doors provided on both sides of an elevator passage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Rotating shaft 3 Release lever 4 Stopper roller (locking means) 5 Spring (biasing means) 6 Pressing part 10 Fire door 11 Front door member 12 Rear door member 13 Hinge part 20 Storage room S Door stopper.

Claims (2)

[Claims] 1. A main body portion attached to a ceiling surface facing an upper surface of a door, a release lever pivotally supported by the main body portion, and an upper surface of the door supported by one end of the release lever. Locking means for being stopped, and biasing means for constantly biasing the release lever in the direction in which the locking means locks on the upper surface of the door, and the release lever is provided at the other end of the release lever. A door stopper, characterized in that a pressing portion is provided for rotating in a direction of releasing the locking state of the locking means against the upper surface of the door against the biasing force of the biasing means. 2. A fire door comprising two front and rear door members that can be opened at a desired angle from a state of being folded via a hinge portion, and a ceiling surface facing the upper surface of the rear door member,
A door stopper for locking the rear door member to the ceiling surface is attached to an end portion near the hinge portion, and the door stopper is a main body portion attached to the ceiling surface,
A release lever pivotally supported by the main body portion, a locking means supported by one end of the release lever and locked on the upper surface of the rear door member, and the release lever by the locking means. And a biasing means for constantly biasing in the direction of locking the upper surface of the rear door member, and the release lever is provided at the other end of the release lever to resist the biasing force of the biasing means. Then, a pressing portion that rotates in a direction to release the locking state of the locking means with respect to the upper surface of the rear door member is provided, and both door members are folded on the side surface near the hinge portion of the front door member. A fire door, characterized in that an actuating portion is provided which pushes the pushing portion when the folded portion is opened at a desired angle.