JP3073659B2 - Emergency door opening / closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for an emergency doorway, and more particularly to a door opening / closing device for preventing unlocking due to a malfunction while ensuring easy unlocking from an evacuation direction.

[0002]

2. Description of the Related Art With regard to entrances and exits to the outdoors, various regulations are set forth in the Building Standards Law (structure of locking devices such as exits to the outdoors). According to this, if management of a key locked for security reasons at an entrance door provided on an evacuation route is performed elsewhere, it will hinder evacuation in an emergency,
Unlocking in the evacuation direction (from inside to outside) is required so that it can be performed without using a key. In addition, there is a demand for a sign that allows an unspecified person to easily understand the unlocking method, and an opening / closing structure that can escape from the inside with one action.

FIG. 5 is a perspective view of a door provided with a conventional emergency door opening / closing device, and FIG. 6 is an enlarged view of a main part of the conventional emergency door opening / closing device. For example, in the case of a door with a glemon-type locking structure,
A horizontal unlocking handle 3 protrudes from the inside of the door 1, and the unlocking handle 3 is unlocked by being manually pressed. As shown in FIG. 6, a release arm 5 is connected to the unlocking handle 3, and the release arm 5 has a rod 9 that drives a lock case mechanism 7 provided on the door 1. The lock case mechanism 7 is provided with a connecting rod 13 for moving the latch 11 and a deadbolt 15 inserted into a keyhole of the other door. The connecting rod 13 and the deadbolt 15 are driven by the rod 9. The lock case mechanism 7
Can be unlocked by inserting the key handle 17 from the outside.

In the conventional emergency door opening / closing device configured as described above, when the unlocking handle 3 is pushed down during evacuation, the lock case mechanism 7 is driven via the rod 9 of the release arm 5, At the same time as the latch 11 is pulled in through the connecting rod 13, the dead bolt 15 is pulled in,
Easy unlocking from the inside of the door 1 was performed.

[0005]

However, in the conventional emergency door opening / closing device, the unlocking handle 3 is attached to the door 1 so that an unspecified person can easily unlock the door by one action.
The door 1 is unexpectedly pressed when the unlocking handle 3 is erroneously depressed when a person misunderstands the handrail or leans on, or when a luggage hits the baggage. In some cases, there is a risk that safety and security problems may occur. Further, the unlocking handle 3 provided in a protruding state from the surface of the door 1 fits into other parts and has a poor appearance (for example, only the unlocking handle 3 prominently protrudes from a continuous flat wall surface). ), And the design (aesthetic appearance) is reduced.
The present invention has been made in view of the above circumstances, and provides an emergency door opening / closing device that does not require the unlocking handle to protrude from the surface of the door while ensuring easy unlocking in one action. It is an object of the present invention to prevent erroneous operation due to hanging and the like and to improve appearance.

[0006]

In order to achieve the above object, an emergency door opening / closing device according to the present invention is characterized in that a latch for locking the emergency door to the opening frame side is provided on upper and lower end surfaces of the emergency door. A pair of connecting rods for vertically moving the latch are provided slidably in the vertical direction of the emergency door, and a lock case mechanism for sliding the connecting rod by driving the release arm is provided. In the emergency door opening / closing device, a concave portion is formed on the inner surface of the emergency door, and a pressing plate that is slidable in the pushing direction in the concave portion is arranged on the same surface as the inner surface of the emergency door, A gear mechanism is provided to convert the sliding of the push plate to the vertical sliding of the release arm. When the emergency door is closed, the push plate is located on the same plane as the inner surface of the emergency door. When the push plate is pushed into the recess from the same surface, conversion by the gear mechanism The lock case mechanism is configured to slide the connecting rod, release the latch between the emergency door and the opening frame by the latch, and open the emergency door in the pushing direction of the push plate. It is characterized by the following.

[0007]

When the push plate is pushed into the recess, the movement of the push plate moves the release arm via the gear mechanism, and the lock case mechanism draws in the latch via the connecting rod. The lock between the door and the opening frame is released. That is, when the push plate is pushed in, the emergency door opening / closing device is unlocked by one action. At this time, the part operated by hand is constituted by the push plate located on the same plane as the inner surface of the emergency door, thereby eliminating the operation part protruding from the door surface. The erroneous operation of opening and closing the emergency door due to being hung or luggage is less likely to occur.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an emergency door opening / closing device according to the present invention will be described below in detail with reference to the drawings. 1 is an external perspective view showing an emergency door opening / closing device according to the present embodiment, FIG. 2 is a cross-sectional view of a push plate portion, FIG. 3 is a perspective view showing a main part of the emergency door opening / closing device according to the present embodiment, and FIG. FIG. 2 is a sectional view taken along line AA of FIG. An opening frame 21 is provided on the wall of the building.
Is provided with a double-sided emergency door 23. A rectangular recess 25 long in the frontage direction is formed slightly below the center of the inner surface of the emergency door. The recess 25 is provided with a push plate 27 having substantially the same shape as the recess 25.
3 are arranged in the same plane as the surface. As shown in FIG. 2, the shaft 2 perpendicular to the pressing plate surface is provided on the back surface of the pressing plate 27.
9 are projected from four corners, and the shaft 29 is slidably inserted into slide bearings 31 provided at the four corners of the recess 25.

Further, a coil-shaped spring 33 is loosely inserted into the shaft 29, and the spring 33 urges the shaft 29 from the slide bearing 31 in the pulling-out direction so that the push plate 27 is flush with the surface of the emergency door 23. They are arranged in a plane. The push plate 27 arranged on the same plane as the surface of the emergency door 23 is pushed in parallel into the recess 25 by a shaft 29 and a slide bearing 31. The push plate 27 has slide bearings 31 at the four corners.
, So that it is pushed in parallel regardless of which position is pressed. On the surface of the pressing plate 27, in an emergency, a sign such that the pressing device can easily determine or a character such as "Please press in an emergency" is displayed.

As shown in FIGS. 3 and 4, a gear mechanism including a rack and a plurality of gears is provided on the back surface of the push plate 27. That is, a rack 35 is provided on the rear surface of the push plate 27 so as to project in a direction perpendicular to the push plate surface.
Is moved linearly in the pressing direction with the movement of. Rack 35
A driven gear 39 fixed to a support shaft 37 parallel to the horizontal surface of the push plate and in the horizontal direction is meshed with the driven gear 39.
Is rotated with the movement of. A drive gear 41 is fixedly provided at the end of the support shaft 37, and the drive gear 41 is engaged with a rack-shaped release arm 45 projecting vertically from the lock case mechanism 43. Therefore, when the support shaft 37 is rotated by the movement of the rack 35, the drive gear 41 moves the release arm 45 in the vertical direction.

The lock case mechanism 43 is provided with a connection rod 49 for moving the latch 47 and a dead bolt 51 inserted into the keyhole of the mating door.
9. The dead bolt 51 is driven by the vertical movement of the release arm 45 by a link mechanism or a gear mechanism (not shown) according to a well-known technique. Further, a recovery knob 53 is recessed in the lock case mechanism 43 outside the emergency door 23, and the knob 53 can be operated by inserting a dedicated handle 55. Therefore, the lock cannot be unlocked from the outside of the emergency door 23 where only the knob 53 is exposed. Note that the lock case mechanism 43 may be provided with the knob 53 operable inside the emergency door 23. Recess 2
5, push plate 27, slide bearing 31, rack 35,
Driven gear 39, drive gear 41, lock case mechanism 4
3. Emergency door opening / closing device 57 including release arm 45, latch 47, connecting rod 49, and dead bolt 51 as main members.
Is configured.

The emergency door opening / closing device 5 thus configured
7, when the push plate 27 is pushed during evacuation, the push plate 27
Is pushed into the recess 25, the rack 35 rotates the driven gear 39 and the drive gear 41, and the release arm 45 meshed with the drive gear 41 is moved upward. When the release arm 45 is moved upward, the latch 47 is pulled in via the connecting rod 49, the dead bolt 51 is pulled in, and the emergency door opening / closing device 57 is unlocked from the inside.

In this emergency door opening / closing device 57, since the part operated by hand is constituted by the push plate 27 which is flush with the door surface, there is no operation part projecting from the door surface. As a result, erroneous operation due to being leaned on by mistake as a handrail or being hit by luggage is less likely to occur. It should be noted that, as described above, it can be easily determined that the emergency operation part for evacuation is indicated by marking the push plate 27 and the like. In addition to the markings, the pressing plate 27 may be subjected to an uneven surface treatment. By performing such an identifiable process based on the tactile sensation, it is possible to improve the visibility at the time of a decrease in visual acuity due to smoke at the time of fire and the easiness of recognition for a low vision person. In addition, the elimination of the protruding operation section from the door surface makes it possible to better fit other parts (for example,
Only the release handle does not prominently protrude from the continuous flat wall surface), so that the appearance is improved and the design is not reduced.

In the above-described embodiment, the push plate 27 is arranged flush with the door surface. However, the push plate 27 may be arranged slightly submerged in the recess 25. With such a structure, a depression in the shape of a push plate is formed on the surface of the door, and the recognizability can be improved by the step with the surface of the door. Further, the push plate 27 may be provided with a marking device which is turned on by an emergency power supply or the like. With such a configuration, the sign can be easily recognized even at night or when the visual acuity is reduced due to smoke.

[0015]

As described above in detail, according to the emergency door opening / closing device according to the present invention, a recess is formed on the inner surface of the emergency door, and the recess can be slid in the pushing direction. The push plate is placed flush with the inner surface of the emergency door, and a gear mechanism is provided to convert the sliding of the push plate into the vertical sliding of the release arm, so that the part can be manually operated. Is flush with the door surface, and there is no projecting operation part from the door surface. This makes it difficult for the user to mistakenly lean on the handrail or hit the baggage to open or close the emergency door erroneously. As a result, it is possible to prevent erroneous operation and improve the appearance while ensuring easy unlocking in one action.

[Brief description of the drawings]

FIG. 1 is an external perspective view illustrating an emergency door opening / closing device according to an embodiment.

FIG. 2 is a sectional view of a pressing plate portion.

FIG. 3 is a perspective view illustrating a main part of the emergency door opening and closing device according to the embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a perspective view of a door provided with a conventional emergency door opening / closing device.

FIG. 6 is an enlarged view of a main part of a conventional emergency door opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Opening frame 23 Emergency door 25 Concave part 27 Push plate 29 Shaft 31 Slide bearing 35 Rack 37 Support shaft 39 Follower gear 41 Drive gear 43 Lock case mechanism part 45 Release arm 47 Latch 49 Connecting rod 57 Emergency door opening / closing device

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Nobuyuki Wada 5-2-10 Higashi Tokorozawa, Tokorozawa City, Saitama Prefecture (72) Inventor Keiji Takeuchi 2048 Tatsuzawa, Moriyacho, Kitasoma-gun, Ibaraki Prefecture (72) Inventor Masayuki Higashida Yokohama, Kanagawa Prefecture 11-7, Torihama-cho, Kanazawa-ku, Tanaka Inside Tanaka Sash Industry Co., Ltd. , U) Hikaru 4-129281 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 65/10

Claims (4)

(57) [Claims] 1. A latch for locking an emergency door to an opening frame is provided on upper and lower end surfaces of the emergency door, and a pair of connecting rods for vertically moving the latch slide in a vertical direction of the emergency door. An emergency door opening / closing device provided so as to be capable of sliding the connecting rod by driving a release arm, wherein a recess is formed on an inner surface of the emergency door, A gear that is slidable into the recess in the pushing direction and that is arranged flush with the inner surface of the emergency door, and that converts the sliding of the pushing plate into the vertical sliding of the release arm. When the emergency door is closed, the push plate is located on the same surface as the inner surface of the emergency door, and when the push plate is pushed into the recess from the same surface, the gear The lock case mechanism section is connected to the lock case mechanism through conversion by a mechanism. To release the latch between the emergency door and the opening frame by the latch, so that the emergency door is opened in the pushing direction of the push plate. Emergency door opening and closing device. 2. The depression and the pressing plate are formed in substantially the same rectangular shape, and shafts orthogonal to the pressing plate surface are provided at four corners of the rear surface of the pressing plate, and the shafts are formed at four corners of the depression. 2. The emergency door opening / closing device according to claim 1, wherein the emergency door opening / closing device is slidably inserted into a slide bearing provided. 3. The gear mechanism is provided with a rack protruding from a back surface of the push plate in a direction orthogonal to a surface of the push plate, and fixed to the rack on a support shaft parallel to the surface of the push plate and in a horizontal direction. A driven gear is fixedly provided at the tip of the support shaft, and the drive gear is meshed with the rack-shaped releasing arm protruding vertically from the lock case mechanism. The emergency door opening / closing apparatus according to claim 1, wherein the rack, the driven gear, the drive gear, and the release arm are provided in the emergency door. 4. A marking device illuminated by an emergency power supply is provided on the push plate.
Emergency door opening and closing device as described.