KR19980033938A - Automatic stopper device and fire door closer - Google Patents

Abstract

The heat detection device is provided in the automatic stopper device and the door closer, which has the basic function of the door closer without automatically installing a separate stopper device at the bottom of the present invention, so that the door can be fixed automatically by stages. The purpose is to provide a series of organic connections that allow the door to be opened and closed controlled only by the stopper device in normal times, and the heat sensing device to control the stopper device in an emergency (in case of fire).

The present invention provides a heat sensing member (4) on the support plate (8) of the door closer, so that the front end of the wedge (11) fixing the piston rod (13) in the cylinder (10) is supported by the heat sensing member (4). The rear end allows the auxiliary lever 17 to be pushed, and the disc gear 20 is fixed to the other end of the rotating shaft 2 of the main body, and the clutch gear 25 which is elasticized by the spring 24 is installed at the front end thereof. Covered and secured with the protective cylinder 23, and through the shaft hole 28 of the protective cylinder through the shaft rod 28 through the inner side of the clutch gear long hole 26, and fasten the levers 27 and 17 to both ends thereof, respectively, 28, it is characterized in that one side is fixed to the bowl-type cam 30 of the cutting surface 31 is installed so as to be connected to the small bowl (35) supported by the spring.

Description

Automatic stopper device and fire door closer

1 is a perspective view showing the overall configuration of the present invention

Figure 2 is a front view of the thermal zone operating in the fire

3 is a normal state diagram of the heat sensing device;

4 is an operation state in the event of a fire

5 is an exploded perspective view of the automatic stopper device;

6 is a state in which the clutch gear of the automatic stopper device is coupled;

7 is a state in which the clutch gear is separated

(A) and (b) of FIG. 8 are connected and disengaged states of the clutch unit.

9 is an enlarged cross-sectional view of the clutch gear.

* Description of the symbols for the main parts of the drawings *

A: Thermal sensing and transmission device B: Automatic stopper device

2: rotating shaft 4: heat sensing body

10 cylinder 11: wedge rod

20: disc gear 25: clutch gear

26: long hole 30: cam

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door closer having an automatic stopper device and to a stopper function capable of fixing a door opening interval in multiple stages while having the basic functions of a conventional door closer.

[Purpose of invention]

It is an object of the present invention to provide an automatic stopper device for automatically fixing an open state of a door step by step while having the basic function of the door closer without installing a separate stopper device at the bottom of the door.

Another purpose is to install a heat sensing device in the door closer so as to organically connect with the automatic stopper device so that the open door can be closed rapidly in the event of a fire so as to prevent the spread of fire. The purpose of the present invention is to provide a series of organic connection configurations in which the door is opened and closed by only the stopper device, and in case of an emergency (in case of fire), the heat sensing device can control the stopper device.

[TECHNICAL FIELD OF THE INVENTION]

The present invention is characterized in that the stopper device coupled to the door closer for controlling the opening and closing of the door and the open door is automatically fixed, and the stopper device is connected to the heat detection device of the fire door.

[Private Technology]

Conventional door closers have elastic closing action such as springs and rack gears installed inside the main body to suppress the metal closing action of the door through the connecting arm, while allowing the door to close slowly but have a certain closing function.

In addition, when the door is opened for indoor ventilation, a separate foot is installed at the bottom of the door to artificially lower the door so as to prevent the door from closing and to fix the door open at a necessary position. It is known to lift.

In addition, the door closer installed in the building aisle or the entrance door has a heat sensing zone on the arm for the purpose of closing the door open rapidly in the event of a fire. (About 90 degrees), and in case of fire, the heat sensing zone is deformed and the pressing piece is released to stop the stopper function, so that the door closes rapidly to prevent the fire from spreading to the opposite side.

[Problem to Invent]

Conventional door closers simply allow the door to close slowly and have a certain closing function, and there is no function of fixing the open state of the door at each required position.

Conventionally, a separate fixed leg is installed at the bottom of the door, but it is inconvenient to raise or lower artificially every time. If the rubber plate is worn by frequent use, the stopper function cannot be performed. There were inconveniences such as having to descend and remount.

In addition, since the heat sensing device installed on the fire door is formed with a protruding jaw on the rotational path of the arm that needs to be flexibly rotated, when the door is closed, the arm can be closed only by forcing the protruding jaw to be closed. When excessive force is applied to the heat sensing bundle and screw fastened part, the flow force is generated, and if the fastening part flows due to frequent use, the heat sensing bundle is damaged and the original door closer function cannot be exerted. There was a problem such as refastening by moving the position of the fastening sideways, and there was also a problem that the heat detection device is not clean and complicated in appearance by attaching to the arm.

The present invention is to provide a convenience in use by organically connected to the automatic stopper device and the automatic stopper device of the new technical configuration that can solve such a conventional problem and only in case of fire. When described in detail by the accompanying drawings, preferred embodiments of the present invention as follows.

[Configuration and Function of Invention]

Figure 1 is a schematic diagram of the overall configuration of the present invention, the heat detection and delivery device (A) is installed on one side of the door closer main body (1) is roughly divided into the automatic stopper device (B) is installed on the other side.

In the present invention, the basic configuration of the door closer to install the reaction force by the spring in the main body 1 and to install the rotary arm 3 for the door connection on one side of the rotary shaft 2 is known.

In addition, the forceps-type heat sensing member 4 shown in FIG. 2 is also known in itself, and the heat sensing center 5 holds both tail pieces 6 and 6 'in a fixed state when a fire occurs. When the temperature is higher than this level, the heat sensing center 5 expands and breaks, thereby releasing both tail pieces 6 and 6 'and causing the body to be deformed by the elasticity of the compressed spring 7. Same as

The main part of this invention installs the new heat sensing and transmission apparatus A in the support plate 8 using the heat sensing body 4 mentioned above.

The heat detection and transmission device (A) is made up of a combination of the heat detection unit and the operation indicator. The heat sensing unit consists of installing the heat sensing body 4 on the front surface of the support plate 8, and the operation indicator consists of a combination of the cylinder 10 fixed to the support plate 8 and the wedge rod 11 controlling it. .

As shown in FIG. 3, the piston rod 13 supported by the spring 12 is fitted to the cylinder 10, and the wedge rod 11 is also provided to have a force to be moved forward by the elastic body 4.

The front end of the wedge bar 11 is installed to be supported on the inner surface of the front end of the heat sensing member 4, and the rear end thereof is the wedge groove 16 of the piston rod 13 through the hole 15 formed in the side wall of the cylinder 10. It is configured to be inserted into.

Therefore, if the heat sensing member 4 is opened at the time of fire, the wedge rod 11 is immediately discharged as shown in FIG. It is to perform a series of interlocking actions to release the automatic stopper device (B) to be described later.

5 illustrates the configuration of the automatic stopper device (B) by fastening the power transmission disc gear (20) to the other end of the rotating shaft (2) with the bowl seat (21) and the screw (22) and rotating shaft (2). The clutch gear 25 is built in the protection cylinder 23 fixed to the main body 1 so that it may be pushed forward by the spring 24.

The clutch gear 25 is a retraction operation connected to or separated from the disc gear 20 fastened to the rotation shaft 2, the retraction operation is instructed by a separate clutch device.

The long hole 26 is vertically penetrated in front of the clutch gear 25, and the shaft 27 is penetrated from the upper part to the lower part through the shaft hole 29 of the protective cylinder 23, and the levers 27 ( 17) The clutch gear 25 is configured to be retracted and operated within the range of the long hole 26 by fastening. The upper lever 27 is used as a manual lever and the lower lever transmits the heat sensing unit. It is used as the auxiliary lever 17.

Bowl-shaped cap 30 is installed in the middle of the shaft 28, the rear end is formed of the cutting surface 31 and the remaining portion is formed round the spherical surface 32 is formed so as to rotate with the shaft 28 It is united in one piece.

In addition, a spring housing chamber 33 is formed at the rear end of the clutch gear 25, and the small bowl 35 is supported to have a resilient force at the front end of the spring 34 installed therein. The sheet 36 is restrained from being able to move forward or more.

Therefore, the clutch gear 25 exists as a non-rotating body that performs only the function of the forward and backward operation, and when connected to the counter disk 20 on the opposite side, the rotation of the disk gear 20 is suppressed while the disk gear 20 If it is disengaged from then, the disc gear 20 is in a state capable of free rotation.

9 is an enlarged cross-sectional view showing the tooth structure of the disc gear 20 and the clutch gear 25 of the present invention is formed of a gentle inclined surface (C) so as to rotate in one direction like a conventional ratchet gear and the opposite step (D) Is formed by a steep slope of about 105 degrees rather than a right angle.

In the above-described tooth structure, the stepped portion D is not formed at right angles like a ratchet gear, but is formed at a steep inclination portion. When it is necessary to close the opened door urgently, the door is urged without using the clutch lever 27. When closed, reverse rotation is possible (door closing).

If the step C is formed at a right angle, reverse rotation is impossible, and thus, if the door is forcibly closed, the gear teeth or the door may be damaged.

7 and 8, the cam 30 rotates and the spherical surface 32 presses the small bowl 35 in the state where the lever 27 is removed. ) Is retracted by the range of the long hole 26 and is separated from the disc gear 20 so that the stopper function is released. In this case, the stopper function is used as a normal door closer.

However, when it is necessary to open the door, when the lever 27 is turned, the cam 30 rotates in reverse as shown in FIGS. 6 and 8, and the small bowl 35 moves forward on the cutting surface 31. Since it is connected, the entire clutch gear 25 is moved forward by the advance interval thereof and is coupled to the disc gear 20. From this time, the rotation of the disc gear 20 is restricted by the clutch gear 25 by the engagement of both gears. do.

Since the clutch gear 25 is a non-rotating member, the rotation of the disc gear 20 is easy in the opening direction of the door, but not easily in the closing direction of the door.

Therefore, if the door is opened as much as desired, it can be stopped in that state. Since the step D of the gear teeth is formed as a steep inclined surface, the stopper function of the door is performed unless more than a force is applied in the closing direction of the door. do.

In addition, the door can be stopped at the user's desired open position without any manipulation.

During operation as described above, the auxiliary lever 17 located on the heat sensing unit side only flows left and right irrespective of the heat sensing unit as shown by the arrow of FIG. 3, and when a fire occurs, the auxiliary lever 17 is deformed by the deformation of the heat sensing body 4. As the wedge rod 11 is rapidly discharged and is subsequently moved forward by the piston rod 13 to push the auxiliary lever 17, the axial rod 28 and the cam 30 connected together relax the clutch device. As soon as it is released, the door closes quickly to prevent the fire from tipping inside.

In the present invention, it is indicated that the use of the ball clutch is not limited thereto, but the clutch gear may be advanced and retracted by another means, and the effect is the same.

[Effects of the Invention]

The present invention can automatically fix the open state of the door without a separate operation compared to the conventional operation of the separate fixed leg artificially by installing an automatic stopper device in the existing door closer and automatically stops only by opening the door. There is the simplicity that the ping operation is performed, and also has the effect of automatically stopping operation at every position depending on the degree of opening the door.

In addition, since the heat detection device is installed to be interlocked with the automatic stopper device, only the stopper device can be operated alone in the standby state, and the stopper device can be released only in the event of a fire. Accurate instruction can be done without giving.

Claims (1)

The heat sensing member 4 is installed on the support plate 8 of the door closer so that the front end of the wedge 11 fixing the piston rod 13 in the cylinder 10 is supported by the heat sensing member 4, and the rear end thereof is assisted. The lever 17 can be pushed, and the disc gear 20 is fixed to the other end of the rotating shaft 2 of the main body, and a clutch gear 25 driven by a spring 24 is installed in front of the protective cylinder 23. Cover and fix the shaft rod 28 through the shaft hole 28 of the protective cylinder through the shaft gear 28 in the inner side thereof, and fasten the levers 27 and 17 to the both ends thereof, respectively. A fire door door closer having an automatic stopper device, characterized in that one side is fixed to the bowl-type cam 30 having a cutting surface 31 so as to be connected to a small bowl 35 supported by a spring.