KR20100004362A - Automatic closing apparatus for fire door - Google Patents

Automatic closing apparatus for fire door Download PDF

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Publication number
KR20100004362A
KR20100004362A KR1020080064486A KR20080064486A KR20100004362A KR 20100004362 A KR20100004362 A KR 20100004362A KR 1020080064486 A KR1020080064486 A KR 1020080064486A KR 20080064486 A KR20080064486 A KR 20080064486A KR 20100004362 A KR20100004362 A KR 20100004362A
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KR
South Korea
Prior art keywords
hook
holder
door
fire door
sliding
Prior art date
Application number
KR1020080064486A
Other languages
Korean (ko)
Inventor
신양섭
Original Assignee
삼화금속 주식회사
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Publication date
Application filed by 삼화금속 주식회사 filed Critical 삼화금속 주식회사
Priority to KR1020080064486A priority Critical patent/KR20100004362A/en
Publication of KR20100004362A publication Critical patent/KR20100004362A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/102—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Abstract

PURPOSE: An automatic closing apparatus for a fire door is provided to rapidly close a fire door in a fire and maintain the opened state of the fire door. CONSTITUTION: An automatic closing apparatus for a fire door comprises a door closer(20), a sliding hanger loop unit(30), a door release(40), and a casing(10). The door closer automatically closes a fire door. The sliding hanger loop unit horizontally reciprocates according to the opening and closing of the fire door. The door release locks the sliding hanger loop unit. The door release unlocks the locking of the sliding hanger loop unit due to the signals of the smoke installed on the building. The casing is fixed on the fire door.

Description

Automatic closing apparatus for fire door

The present invention relates to a fire door that is installed in the entrance or passage of various building structures to prevent the spread of flames and smoke to an adjacent area in the event of a fire, more specifically, consisting of a single body, as well as new, (旣) Installation The fire door automatic closing device is designed to be easily mounted on the fire door to keep the fire door open in normal (non-fire), and to close the fire door quickly in the event of a fire.

In general, various building structures have passages for entry and exit, especially in large buildings such as buildings or apartments where many people reside in the building, and several passageways such as elevators and emergency stairs and / or corridors are provided together. have.

Therefore, in the event of a fire, the flame spreads rapidly through these passages and there is a high possibility of spreading to a large fire disaster, and in fact, many fire accidents occurring in apartments, etc., are leading to a large fire by spreading the flames rapidly through these passages.

As a result, mandatory installation of fire doors that block spaces in order to suppress or delay the spread of fire in case of emergency in the case of large group residential buildings such as buildings and apartments, in particular, the entrance and the boundary of each passage, etc. have.

Such a fire door is fixed to an open state for the convenience of users and is made to close automatically only in the event of a fire. To this end, the fire door is provided with a device for automatically closing the door, and a fixing release means such as a door release operated by a signal of the fire detection means is provided on the wall.

On the other hand, door closer and auto hinge device are mainly used to close the door automatically.They need to install a door release on the wall to fix the fire door in the open state and release it in case of fire. There is a troublesome problem.

In addition, in the case of auto hinge, it has an external advantage because it is embedded in the door, but it is difficult to install in the door which is already installed. Have

Accordingly, in recent years, many devices have been provided that can be easily installed by directly installing the fire door in the door closer without fixing the release means for fixing the position in the open state and releasing the fire in the wall.

For example, Korean Patent Registration No. 10-0567769 and Utility Model Registration Nos. 20-0432692 and 20-0410354 can be found, and these technologies are simply the top or door of a door closer that is commonly used. It is installed in the door frame frame separately from the connection link or door closer connecting the closure to the door frame, and still has a disadvantage in that the installation is not only complicated and weak in appearance.

The present invention was devised in view of the above-mentioned conventional problems, and consists of a single body, as well as a new installation, and easily installed in a pre-installed fire door, which keeps the fire door stable in an open state during normal (non-fire) The purpose of the present invention is to provide an automatic fire door closing device that can close the fire door quickly in case of fire.

Fire door automatic closing device according to the present invention in order to achieve the above objects, the one end is connected to the door frame frame through a connecting link has a rotating shaft which is rotated forward and backward by the opening and closing of the fire door, closing the fire door by hydraulic Giving door closers; A sliding hook unit having a hook, the hook hook unit being electrically connected to the other end of the rotating shaft of the door closer and reciprocating horizontally according to opening and closing of the fire door; A door release fixed to one side of the sliding hook unit in a moving direction to lock the sliding hook unit when the fire door is opened, and releasing the locking of the sliding hook unit by a smoke detection signal; A hook length adjusting means installed on the sliding hook unit, the hook length adjusting means for adjusting the position and fixing the distance of the hook to the door release; It is characterized in that it comprises a; casing attached to the fire door by embedding the entire component except the connection link.

According to one preferred feature of the present invention, the sliding hook unit has a pinion mounted to the other end of the rotation shaft of the door closer, the sliding rack is arranged in parallel with the door closer having a rack gear meshing with the pinion, and supported by the guide; A hook is movably coupled to one end of the sliding rack and protrudes to face the door release.

According to another preferred feature of the present invention, the door release, and the case is guided to the guide means having a hook insertion hole into which the hook is inserted; A hook-type hook holder which is hinge-assembled in the case to lock the sliding hook, and has a hooking jaw at one end and is elastically biased in a direction to release the locking of the hook; A holder locker which is hinge-assembled in the case with a catching protrusion elastically caught on the catching jaw of the hook holder and elastically biased so that the catching protrusion contacts the outer circumference of the hook holder; It is provided in a case, and is provided with the solenoid which rotates a holder locker in the elastic opposite direction according to the smoke detection signal from the exterior.

According to another preferred feature of the invention, the hook length adjusting means, the rack gear is formed on the engaging portion with the sliding rack of the hook, and is formed to be orthogonal to the hook on the sliding rack, a part of which is coupled with the hook portion of the hook; An adjusting hole overlapping and having a spline hole at one end; A spline shaft coupled to the spline hole of the adjustment hole and a pinion to be engaged with the rack gear of the hook, and the rack gear has a length longer than that of the spline shaft, and is coupled to the assembly hole to pull out the spline shaft to the outside. ; And an elastic means for elastically biasing the adjusting shaft in the direction opposite to that of the adjusting shaft.

According to the present invention, all the components including the door closer is built in a single casing, as well as beautiful appearance, since it is made of a single body, as well as a new installation, as well as a conventional door closer is very good It is easy to install.

In addition, it keeps the fire door open and stable in normal (non-fire), but can close the fire door quickly in case of fire, which can greatly reduce the damage caused by the fire. If necessary, the fire door can be opened and closed easily.

Therefore, this invention has the effect which contributes greatly to the improvement of the construction property, reliability, and ease of use of a fire door.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

1 to 6, the automatic fire door closing device according to the present invention, the door closer 20 to automatically close the fire door (D) in the open state, and the door closer 20 in accordance with the opening and closing of the fire door (D) Sliding hook unit 30 to reciprocate horizontally in conjunction with the rotary shaft 23 of the, and fixedly spaced on one side of the sliding hook unit 30 is fixed at the time of opening the fire door (D) when sliding in its maximum open position The door release 40 which locks the hook unit 30 and releases the sliding hook unit 30 by the signal of a smoke detector (not shown) installed in the building, It comprises a casing (casing: 10) fixed to the fire door (D).

The casing 10 is composed of a rectangular base 11 made of a metal plate on which other components are installed, and a cover 12 detachably assembled to the base 11 to cover the components installed on the base 11. do.

The door closer 20 is a conventional one widely used for the automatic closing of the swing door. However, only the configuration of the rotating shaft 23 has a configuration in which the sliding hook unit 30 reciprocates horizontally according to the opening and closing of the fire door D.

As is well known, the door closer 20 has an oil chamber 21 having an oil chamber 21a therein and a rack gear 22a around its outer circumference with an oil chamber 21 of the body cylinder 21. The body cylinder has a piston rack 22 accommodated in 21a and a pinion 23a engaged with the rack gear 22a of the piston rack 22 so as to be orthogonal to the moving direction (vertical direction) of the piston rack 22. The rotating shaft 23 penetrates 21, and the one end is fixed to this rotating shaft 23, and the other end is the connection link | route 24 of the one-piece structure which is pivotally supported by the door frame frame.

The body cylinder 21 is provided with a flow passage 21b for communicating the two zones of the oil chamber 21a partitioned by the piston rack 22 to induce the movement of oil, and the flow passage 21b is a body cylinder ( 21 may be adjusted by the hydraulic control valve 25 provided.

The piston rack 22 is elastically biased in the closing direction of the door by the compression coil spring 26, and has a check valve 27 for reducing the closing speed of the door at one end thereof.

The sliding hook unit 30 has a pinion 23b mounted on the other end of the rotation shaft 23 of the door closer 20 and a rack gear 31a engaged with the second pinion 23b on the upper surface of the door closer 20. Sliding rack (31) installed side by side and reciprocating horizontally installed side by side, and protruding to one end of the sliding rack 31, hook 32 is locked to the door release 40, It consists of a guide (33) that supports the sliding rack (31) on the base (11) of the casing (10) to be movable.

The rack gear 31a of the sliding rack 31 is formed to have a length corresponding to the opening angle of the fire door D. In general, a swing door such as the fire door D has an opening degree of 90 ° to 180 °. It is formed to a length corresponding to the angle. By the way, depending on the building, sometimes it may have an opening degree of 90 degrees or less, Preferably it is set to correspond to the opening degree of about 70 degrees-180 degrees.

This sliding rack 31 is preferably provided with a plurality of bearings, for example roller bearings 34, as shown in FIG. 11, as shown in FIG. 11 for smooth movement.

Hook 32 is formed in a substantially U-shape, the rod portion (32a) is formed long enough to correspond to the opening angle of the different fire door (D) different head 31b provided at one end of the sliding rack (31) Movably coupled).

The guide 33 may be configured in various forms. In this embodiment, for example, as shown in the drawing, the sliding rack 31 is wrapped at intervals so as to stably support the movement of the sliding rack 31. It consists of two guide blocks 35 and 36 supporting.

On the other hand, when the fire door (D) is closed due to the fire, it should not be opened easily even by the wind pressure of the fire zone, preferably, at least one of the two guide blocks (35, 36) to close the fire door (D) The closing and holding means 37 may be further provided to keep it firmly in a closed state.

As shown in FIG. 11, the closing and holding means 37 of the present invention forms a ball seat 31b on the surface in sliding contact with the sliding rack 31 of the guide block 35, and the guide block. It is comprised by attaching the locking ball 38 which is elastically matched to the ball seat 31b of the sliding rack 31 in 35. As shown in FIG.

The locking ball 38 is inserted into the guide block 35 to form a receiving hole 35a so as to be orthogonal to the sliding rack 31, and is supported by the compression coil spring 38a and a screw 39 at the rear thereof. A part of the body protrudes out of the sliding contact surface of the guide block 35.

At this time, the ball seat 31b of the sliding rack 31 is formed at a position where the locking ball 38 can be seated correctly (the position of the opening degree of the fire door) in the closed state of the fire door (D).

Accordingly, in the state in which the fire door D is opened, the protruding portion of the locking ball 38 enters the receiving hole 35a of the guide block 35 while compressing the compression coil spring 38a, and the fire door D is closed. Only the state protrudes by restoring elasticity of the compression coil spring 38a and elastically matches the ball seat 31b of the sliding rack 31, thereby preventing opening of the fire door D due to wind pressure or the like.

As shown in Figs. 6 to 7C, the door release 40 includes a case 41 having a hook insertion opening 42 on one side facing the hook 32 of the sliding hook unit 30, and the case ( 41) The hook holder 43 which is hinged to the inside and hangs the hook 32, and the holder locker 49 which locks the hook holder 43 in the fixed state of the hook 32, and from the outside. In accordance with the smoke detection signal of the holder locker (49) is made of a solenoid (solenoid: 52) to release.

The case 41 is divided into upper and lower cases 41a and 41b which are assembled with each other to accommodate the hook holder 43 and the holder locker 49, and accordingly, the hook inserting hole for entering the hook 32 ( 42) is also divided into upper and lower hook insertion holes (42a, 42b). In addition, a guide hole 41c is formed in the upper case 41b so that the release pin 50 of the holder locker 49 described later can penetrate and rotate.

The hook holder 43 has a hook-shaped first holder 44 having a hook catching groove 44c on which the hook 32 is fitted, and a hooking jaw 45b at one end thereof. 44 and the L-shaped second holder 45 connected to the lower portion so as to be relatively rotatable and coupled to the first hinge 43a coaxially together.

The first and second holders 44 and 45 are provided with lugs 44a and 45a corresponding to the other ends so as to protrude upwards, and the adjustment screw 47 is interposed between the compression coil springs 46. By passing through the lug (44a) of the first holder 44 and screwed to the lug (45a) of the second holder 45 is connected integrally with each other to rotate together.

That is, the compression coil spring 46 is positioned between the lug 44a of the first holder 44 and the head of the adjusting screw 47 so that the first and second holders 44 and 45 are integrated by the elastic force. Will be connected so as to overlap, by adjusting the tightening and loosening of the adjusting screw 47 will be able to adjust the coupling force.

In addition, the head 44b of the first holder 44 is a selective sole rotation of the first holder 44, and thus the locking protrusion 49a of the holder locker 49 described later is the locking jaw 45b of the second holder 45. The outer circumferential surface is convexly bent at approximately the middle portion to release it so as to escape from the side), and only the tip side portion thereof contacts with the locking protrusion 49a of the holder locker 49 during rotation.

The hook holder 43 is elastically biased toward the opening of the hook insertion hole 42 of the case 41 by the first torsion spring 48 of the head 44b of the first holder 44.

On the other hand, the hook holder 43 is composed of the first and second holders 44 and 45 which are connected to each other so as to overlap each other as described above, even when the fire door D, which is always open, is needed even in a non-fire situation. In order to be able to close manually by applying a constant force according to this, the required external force required for manual opening is the adjustment screw that integrally connects the first and second holders 44, 45 of the hook holder 43 ( 47) by adjusting the elasticity of the compression coil spring 46.

The holder locker 49 has a locking protrusion 49a fitted to a hook holder 43 and a locking projection 45b of a second holder 45 on one side of the body, and the solenoid 52 is caught on the other side according to a smoke detection signal. And a release pin 50 for releasing the locking device 49a from the locking step 45b of the second holder 45. The holder locker 49 is coupled to the second hinge 49b to be elastically biased in a direction opposite to the elastic direction of the hook holder 43 by the second torsion spring 51 so as to fix the hook holder 43 in position. do.

Although the locking protrusion 49a may have a configuration that protrudes separately from the body of the holder locker 49, the locking protrusion 49a may be inserted into and removed from the locking jaw 45b of the second holder 45 by the rotation of the holder locker 49. It can only be released by the head 44b of the first holder 44 that rotates during manual closing, as shown in the figure corresponding to the locking jaw 45b on one side of the body of the holder locker 49 It is enough to construct the corners.

The release pin 50 has an arm 49c positioned on the upper portion of the hook holder 43 so as not to interfere with the rotation of the hook holder 43, and is installed vertically upwardly at the distal end of the arm 49c. It passes through the guide hole 41c of the upper case 41b.

The solenoid 52 is mounted on the upper case 41b, and has a pin hole 53a at the distal end of the shaft 53 to be coupled to the release pin 50 of the holder locker 49.

Meanwhile, brackets 55a and 55b for attaching the door release 40 to the base 1 of the casing 10 are respectively attached to the front and rear surfaces of the door release 40, among which the front side (entrance of the hook) is attached. On the bracket 55a attached to the side surface), a slot 55c for accessing the hook 32 is formed.

As shown in FIGS. 8 to 10, the hook length adjusting means 60 includes a rack gear 61 formed on one rod portion 32a of the hook 32 having a U-shape, and a sliding rack 31. It is provided so as to penetrate through the head 31b of the adjusting shaft 64 for forcibly moving and fixing the hook 32 in the longitudinal direction (moving direction of the sliding rack).

To this end, the head 31b of the sliding rack 31 has a pair of spaced coupling holes 62a to which the rod portion of the hook 32 is movably coupled, and one adjustment hole to which the adjustment shaft 64 is assembled. 62b) is formed to be orthogonal to each other, and one of the pair of coupling holes 62a is formed so that a part thereof overlaps with the adjustment hole 62b.

And the adjusting hole 62b has the spline hole part 63 in which the spline was formed by the fixed length at one end part.

The adjustment shaft 64 is a spline coupled to the pinion 65 engaged with the rack gear 61 formed in one rod portion 32a of the hook 32 on the outer circumference and the spline hole portion 63 of the adjustment hole 62b. The shaft 66 is spaced apart. The spacing between these pinions 65 and the spline shaft 66 is set to a length such that the spline shaft 66 can completely escape from the adjusting hole 62b when the adjusting shaft 64 is pulled out.

The pinion 65 of the adjustment shaft 64 is engaged with the rack gear 61 of the hook 32 in relation to the stroke of the adjustment shaft 64 even when the spline shaft 66 is pulled out of the adjustment hole 62b. It has a longer length than the spline shaft 76 so that it can always bite with the rack gear 61 of the hook 32.

The adjustment shaft 64 has one end portion protruded out of the adjustment hole 62b of the sliding rack 31, and the adjustment shaft 64 is provided on the upper surface of the sliding rack 31 head 31b on which the adjustment shaft 64 protrudes. The support plate 67 through which 64 passes is spaced apart by a plurality of pins 67a. Compression coil spring 68 for automatically returning the adjustment shaft 64 drawn out for adjusting the protruding length of the hook 32 between the support plate 67 and the spline shaft 66 of the adjustment shaft 64. This intervenes.

The remaining reference numeral 64a is a knob assembled to the protruding end of the adjusting shaft 64, and 69 is an end ring for supporting the other end of the adjusting shaft 64 so as not to be detached.

Next, the operation of the automatic fire door closing device according to the present invention configured as described above will be described.

First, the hook 32 and the door release 40 are adjusted by adjusting the protruding length of the hook 32 to the sliding rack 31 according to the maximum opening angle of the fire door D to which the closing device 1 of the present invention is to be installed. Adjust the interval between At this time, if the opening angle of the fire door (D) is small, the protruding length of the hook 32 is long to narrow the distance between the hook 32 and the door release 40, and if the opening angle of the fire door (D) is large, the hook (32) By shortening the protruding length of the hook 32 and the door release 40 to widen the interval.

That is, as shown in Fig. 9, the adjustment shaft 64 is pulled out to disengage the spline shaft 66 from the spline hole portion 63 of the adjustment hole 62b. Then, the adjustment shaft 64 is in a rotatable state, and in this case, the pinion 65 of the adjustment shaft 64 is in engagement with the rack gear 61 of the hook 32.

In this state, when the adjusting shaft 64 is rotated to the left or the right, the hook 32 is moved by the rack gear 61 engaged with the pinion 65 as shown in FIG. Direction of the protrusion is adjusted.

Then, after adjusting the protruding length of the hook 32, if the external force applied to the adjusting shaft 64 is removed, the spline shaft 66 of the adjusting shaft 64 is resilient by the restoring elasticity of the compression coil spring 68. It is inserted into the adjustment hole 62b of the sliding rack 31 again and engages with the spline hole 63.

Accordingly, the rotation of the adjustment shaft 64 is prevented, and the adjustment shaft 64 is prevented from rotating so that the hook 32 is fixed in the adjusted state by the pinion 65 and the engaged rack gear 61. do.

When the length adjustment of the hook 32 is completed, the fire door (D) automatic closing device (1) of the present invention is attached to the upper portion of the inner surface of the fire door (D) as in the conventional door closer as shown in Figs. Then, the free end of the link link 24 of the door closer 20 is fixed to the door frame frame F to be installed in the fire door D.

In the state in which the fire door D is closed after the first installation, the sliding hook unit 30 is located at the far left (initial position) in the drawing. At this time, the hook holder 43 of the door release 40 is the first torsion spring ( 48, it is rotated clockwise in the drawing so that the hook insertion hole 42 of the case 41 remains open, and thus the holder locker 49 deforms the second torsion spring 51 in the clockwise direction. It is rotated so that the locking projection 49a is in close contact with the outer circumference of the first holder 44 of the hook holder 43.

In this state, when the fire door D closed as shown by the virtual line in FIG. 2 is opened, the rotating shaft 23 of the door closer 20 fixed to the one end to the connection link 24 as shown in FIG. This is rotated clockwise, whereby the piston rack 22 engaged with the pinion 23a of the rotation shaft 23 is moved to the right side in the drawing while compressing the compression coil spring 26.

At this time, the oil is in the right region of the oil chamber 21a of the body cylinder 21, the oil of the oil chamber 21a through the flow passage 21b of the body cylinder 21 and the check valve 27 of the piston rack 22. Exit to the left section.

At the same time, the sliding rack 31 of the sliding hook unit 30 engaged with the pinion 23b mounted on the other end of the rotating shaft 23 is moved in the right direction in the drawing so that the hook 32 is shown in Fig. 7A. As shown above, the hook insertion slot 42 of the door release 40 is entered.

Then, the hook holder 43 of the door release 40 is pushed by the hook 32 which enters, and as shown in FIG. 7B, the first torsion spring 48 is rotated counterclockwise while deforming the first torsion spring 48. The head 44b of the 44 blocks the hook insertion slots 42a and 42b so that the hook 32 is locked in the hook catching groove 44c.

When the hook holder 43 is rotated in the clockwise direction by the hook 32 entering, the holder locker 49 held by the head 44b of the hook holder 43 is second torsion spring 51. It is rotated counterclockwise by the restoring elasticity of the locking projection (49a) is elastically fitted to the locking projection (45b) of the hook holder 43, the second holder (45). Then, the hook holder 43 is restrained by the holder locker 49 to fix the hook 32.

On the other hand, when it is necessary to close the fire door D when necessary in the case of non-fire, if the fire door D is opened and closed by the door release 40 by applying a predetermined force or more, as shown in Fig. 7C. As described above, the second holder 45 of the door release holder 40 and the hook holder 43 remain as they are, and only the first holder 44 is rotated in the clockwise direction while the head 44b is pulled by the hook 32 to close it manually. It becomes possible.

That is, the hook holder 43 of the door release 40 of the present invention is elastically connected by the compression coil spring 46 by overlapping the first and second holders 44 and 45 which can be rotated relative to each other. The second holder 45 is restrained by the holder locker 49, and only the head 44b of the first holder 44 hangs the hook 32. The fire door D has a predetermined force (compression coil spring). When closed by a force greater than the elasticity of the second holder 45 is intact and only the first holder 44 is rotated by a predetermined angle clockwise while deforming the compression coil spring 46 to release the restraint of the hook 32 It is to let.

At this time, the head 44b of the hook holder 43 and the first holder 44 is convexly bent in the middle of the outer circumferential surface so that only the tip portion of the head 44b contacts the locking protrusion 49a of the holder locker 49. Rotation of the first holder 44 by manual external force causes the hook 32 to escape from the hook catching groove 44c, and at the same time, the bent portion (bend edge) of the outer circumferential surface of the head 44b of the holder locker 49 The restraint of the second holder 45 is also released at the same time by pushing the catching protrusion 49a to separate from the catching jaw 45b of the second holder 45.

Accordingly, the hook 32 is pulled out and the second holder 45 is returned to its initial state such that the first and second holders 44 and 45 are overlapped again by the restoration elasticity of the compression coil spring 46. The holder 43 itself is rotated clockwise as shown in FIG. 7A to return to the initial state before the hook 32 is caught.

On the other hand, the present invention may be manufactured in various types so as to correspond to the opening angle of the conventional fire door (D), respectively, and can be manufactured to be applied to both the maximum opening angle at the minimum opening angle of the conventional fire door (D). It may be.

And, even if made exclusively according to a specific opening angle, the actual opening angle of the fire door (D) may be somewhat different depending on the installation process of the fire door (D) and the structure of the building, even in this case the present invention is as described above By properly adjusting the protruding length of the hook 32, it is possible to fix the position accurately according to the actual opening angle of the fire door (D).

1 is a perspective view schematically showing a state in which a fire door automatic closing device according to the present invention is attached to a fire door;

FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1;

Figure 3 is an exploded perspective view of the automatic fire door closing device according to the present invention,

4 is a plan view of the coupled state of FIG.

5 is a cross-sectional view schematically showing a door closer;

6 is an exploded perspective view showing a door release of the present invention;

7a to 7c are plan views showing the operating state of the door release,

8 is a perspective view showing a hook length adjusting means of the present invention;

9 is a cross-sectional view of the coupled state of FIG. 8;

10 is a cross-sectional view taken along the line VII-VII of FIG. 9;

11 is a sectional view showing the fire door closing and keeping means of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: casing 11: base

12: cover 12a: coupling slot

20: door closer 21: body cylinder

21a: oil chamber 22: piston rack

22a: rack gear 23: rotating shaft

23a, 23b: Pinion 24: Link

30: sliding hook unit 31: sliding rack

31b: ball seat 32: hook

32a: rod 35, 36: guide block

38: Rocking Ball 40: Door Release

41: case 41a, 41b: upper and lower cases

42: hook holder 43: hook holder

44, 45: first and second holder 44b: head

44c: hook locking groove 45b: hooking jaw

47: adjusting screw 49: holder locker

49a: engaging protrusion 50: release pin

52: solenoid 60: hook length adjusting means

61: rack gear 62b: adjustment hole

63: spline hole 64: adjustment shaft

65: pinion 66: spline shaft

D: Fire door F: Door frame

Claims (7)

It is a device to fix the fire door installed in the building in the open state and to close the fire door automatically by the smoke detection signal in case of fire. A door closer having one end connected to the door frame frame through a connecting link and having a rotating shaft rotated forward and backward by opening and closing the fire door, and closing the fire door by hydraulic pressure; A sliding hook unit having a hook, which is rotatably connected to the other end of the rotating shaft of the door closer and reciprocates horizontally according to opening and closing of the fire door; A door release fixedly installed at one side in a moving direction of the sliding hook unit to lock the sliding hook unit when the fire door is opened, and releasing the locking of the sliding hook unit by a smoke detection signal; Hook length adjusting means installed on the sliding hook unit to adjust and position the distance of the hook with respect to the door release; And a casing attached to the fire door by embedding the entirety of the component except the connection link. The method of claim 1, wherein the sliding hook unit, A pinion mounted on the other end of the rotating shaft of the door closer, a sliding rack disposed in parallel with the door closer with a rack gear engaged with the pinion, and supported by a guide, and movably coupled to one end of the sliding rack Fire door automatic closing device characterized in that it has a hook protruding to face the door release. The method according to claim 1 or 2, wherein the door release, A case guided to the guide means with a hook insertion hole into which the hook is inserted; A hook-type hook holder which is hinge-assembled in the case and locks the hook, and has an engaging jaw at one end and is elastically biased in a direction to release the locking of the hook; A holder locker which is hinge-assembled in the case with a catching protrusion elastically caught to the catching jaw of the hook holder and elastically biased so that the catching protrusion contacts the outer circumference of the hook holder; And a solenoid mounted on the case, the solenoid rotating the holder locker in the direction opposite to the elasticity in response to a smoke detection signal from the outside. The method of claim 3, wherein the hook holder, The hook has a hook catching groove to be hooked and has a lug at the other end vertically having a head at one end having a head for rotating the holder locker in the opposite direction to contact the locking protrusion of the holder locker only when unlocking the sliding hook. The first holder of the hook form, An L-shaped second holder overlapping a lower portion of the first holder and having the locking jaw at one end thereof and vertically having a lug at the other end thereof; Penetrated through the lug of the first holder and screwed to the lug of the second holder, integrally connecting the first and second holder via a compression coil spring between the head and the lug of the first holder. With adjustment screw, Fire door automatic closing device, characterized in that the intermediate portion is assembled in one hinge in the state where the first and second holders overlap each other. According to claim 1 or 2, The hook length adjusting means, Rack gears formed on the engaging portion of the hook and the sliding rack, An adjustment hole formed in the sliding rack so as to be orthogonal to the hook, a portion of which overlaps with a portion of the engaging portion of the hook, and having a spline hole at one end; A spline shaft coupled to the spline hole of the adjusting hole and a pinion to be engaged with the rack gear of the hook, wherein the rack gear has a length longer than that of the spline shaft and is coupled to the adjusting hole to bring the spline shaft to the outside. An adjustable shaft which can be pulled out; And an elastic means for elastically biasing the adjusting shaft in a direction opposite to that of the adjusting shaft. The fire door automatic closing device according to claim 2 or 5, further comprising a fire door closing and holding means for maintaining a closed state of the fire door closed by the fire in the sliding hook unit. The fire door closing and holding means includes: a receiving hole formed to be orthogonal to the sliding rack in a guide for movably supporting the sliding rack, and a part of which is inserted into the receiving hole to be in contact with the sliding rack. And a locking ball elastically biased to protrude toward the ball, and a ball seat formed on a contact surface of the sliding rack to guide the locking ball.
KR1020080064486A 2008-07-03 2008-07-03 Automatic closing apparatus for fire door KR20100004362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080064486A KR20100004362A (en) 2008-07-03 2008-07-03 Automatic closing apparatus for fire door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080064486A KR20100004362A (en) 2008-07-03 2008-07-03 Automatic closing apparatus for fire door

Publications (1)

Publication Number Publication Date
KR20100004362A true KR20100004362A (en) 2010-01-13

Family

ID=41813944

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080064486A KR20100004362A (en) 2008-07-03 2008-07-03 Automatic closing apparatus for fire door

Country Status (1)

Country Link
KR (1) KR20100004362A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101251973B1 (en) * 2011-01-17 2013-04-08 김진억 Dual Door Control System
CN110487078A (en) * 2019-09-10 2019-11-22 中健省力(天津)工业炉有限公司 A kind of split fire door of novel link type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101251973B1 (en) * 2011-01-17 2013-04-08 김진억 Dual Door Control System
CN110487078A (en) * 2019-09-10 2019-11-22 中健省力(天津)工业炉有限公司 A kind of split fire door of novel link type

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