KR101188042B1 - Door-Closer for Prevention of Fire - Google Patents

Abstract

The present invention relates to a door closer for fire protection, the body, the piston and the rack, etc.
In a conventional door closer constructed and operated by working oil, a flow path (working oil passage) formed in the body 10 is used to control the temperature or smoke in the event of a fire and a general flow path 11 used for opening and closing a normal door. The fire protection channel 12 is configured to open the fire protection valve 70 is installed separately in the flow path to close the door by itself, and the auxiliary valve is installed separately inside the piston 20 as ,
When the piston 20 is advanced over a certain distance, the piston flange 22 is configured to block the movement of the hydraulic fluid to maintain a stop state, in case of fire by the operation of the fuse 76 in the fire 12) is configured to open the fire protection valve 70 is installed at the end so that the door can be closed by itself, and a part of the piston 20 is a separate auxiliary valve to switch the door of the stop state to the operating state Characterized in that configured separately attached.

Description

Fire-proof door closer {Door-Closer for Prevention of Fire}

The present invention is to allow the door to close slowly after opening

It relates to a door closer installed at the top of the door, and more particularly, when the door is opened or closed at a certain angle to operate so as to close slowly like a normal door closer,

In case of opening over a certain angle, the door is opened without additional operation or equipment.

In particular, the present invention relates to a fire door closer configured to automatically close a door at a predetermined temperature when detecting a fire.

In general, the top of the swing door is designed to allow the door to close itself slowly.

A door closer is installed, and a door stopper is installed at one portion of the lower part to keep the door stopped.

Such a swinging door has to be separately installed at the top and bottom of the door closer and door stopper, not only aesthetically good, but also has a very troublesome problem because the door stopper must be operated using the foot or hand when using the door stopper.

Many inventors do not use door stoppers to remedy this problem.

Stationary door closers have been developed that can be self-stopping over a certain angle without a need.

However, most of the stationary door closers developed in this way are opened at a certain angle.

Since it is possible to keep only the stopped state in an open state, it is not possible to close the door automatically in case of fire and prevent the spread of fire.

The use was extremely limited because it could not be used in shopping mall buildings.

On the other hand, the fire door door closer already developed and used was configured to automatically close the door by adding a separate stop device to the body of the door closer and release the stop device by melting the fuse above a certain temperature.

The fireproof door closer configured as described above maintains the stop state and releases the stop state by mechanical force, such as a stop pin, which is separately configured on the outside, thus increasing the production cost due to the complicated structure and the smooth operation. There was a downside.

The present invention is to improve the above problems,

First, to provide a fireproof door closer with a simple structure and low production cost.

Second, the operation is smooth, and to provide a fire-proof door closer that can be stopped at a certain angle or more without additional operation.

Third, in the event of a fire is to provide a fire-proof door closer that can close the fire door by releasing the stop state without a separate additional operation at a certain temperature or more.

Fourth, to provide a fire door door closer that can close the fire door by the operation of the yearbook keeper.

Fifth, when the door is closed due to fire detection, the door can be closed faster and with stronger force than when it is normally closed, which can block the spread of fire and smoke more quickly.

It is an object to provide a fireproof door closer.

In general, the door closer is mounted to a part of the door, and a space is formed therein, and a working oil is accommodated in the space, and a body 10 in which a general flow path 11, a fire path 12, and a pinion housing 16 are formed. ) And: the body 10 is inserted into the inner space and sliding contact, in one part

It is elastically supported by the spring 40 and the other end is composed of a check valve 26,

A piston 20 having a rack 20a formed at one portion of the outer circumferential surface thereof; and a spring 40 mounted at one portion of the body 10 and configured to elastically return the piston 20:

The pinion gear 30, which is housed in the pinion housing 16 of the body 10 and is combined with the rack 20a formed in the piston 20, transmits power.

The present invention is a conventional door closer configured as described above,
A flow path (working oil passage) formed in the body 10 opens a general flow path 11 used for opening and closing a normal door and a fire protection valve 70 separately installed in the flow path by temperature or smoke during a fire. As a fire protection passage 12 is formed separately to be able to close the door by itself, and the auxiliary valve is installed separately inside the piston 20,

The general purpose flow path 11 has a flow path connecting the general front room side hole 11a formed in the body front chamber 10a and the general rear thread side hole 11b formed at the distal end of the body rear chamber 10b, and has a general front room side hole. 11a is formed at a position where the piston 20 is blocked by the piston flange 22 when the piston 20 is advanced over a predetermined distance to block the movement of the working oil, and when the piston 20 is advanced by the predetermined distance.

One side hole of the flow path is blocked by the outer circumferential surface of the piston 20 to block the movement of the operation oil to maintain a stop state, the fire passage 12 is formed in the body front chamber 10a as shown in FIG. A flow path for connecting the fire prevention chamber side hole 12a and the fire protection chamber side hole 12b formed at the distal end of the body rear chamber 10b is formed. A fire valve 70 is separately attached to the end of the fire path 12 to open the flow path that is normally sealed by the operation of the fuse 76 to resume the movement of the operation oil, and the piston 20 In one part of the door is opened under a certain condition to switch the door in the operating state to the operating state so that the working oil in the body rear chamber (10b) can move to the front body chamber (10a)

Auxiliary valve is configured to be installed separately, usually when the door is opened more than a certain range serves as a stationary door closer, in case of fire

By melting the fuse 76, the fire passage 12 is opened so that the door in the stopped state can be closed by itself.

The present invention can provide a fireproof door closer with a simple structure and low production cost.

In addition, the operation is smooth because the flow path is kept in a stopped state, and the stop state can be maintained if the door is opened beyond a certain range without additional movement.

do.

In case of fire, it stops without any additional action above a certain temperature.

The fire door can be closed by itself, and the fire door can be closed by detecting smoke by an additional power detector and external power.

In addition, when the door is closed due to the fire detection, the general flow passage and the fire passage flow simultaneously.

Since the door can be closed faster and with stronger force than usual, it is possible to provide a fireproof door closer that can block fire and smoke more quickly.

1 is a preferred embodiment of the present invention
Cross-sectional view showing the operating state of normal door opening and closing
Figure 2 is a detailed view of the auxiliary check valve showing a normal operating state
3 is a detailed view of the auxiliary valve valve showing a state when the door in the stopped state is closed;
4 is an exploded perspective view of the present invention;
5 is a preferred embodiment of the present invention
Cross-sectional view showing the state with the fire protection valve attached
Figure 6 is a cross-sectional detailed view showing a fire valve
7 is a conceptual diagram illustrating an operation state of the elastic support and the fuse of the fire protection valve of FIG.
8 is a view showing another embodiment when using a smoke detector and an external power source

In the accompanying drawings a preferred embodiment of the present invention for achieving the above object

If described in detail as follows.

The present invention is a conventional door closer composed of a body, a piston and a rack and operated by the operating oil.

The body 10 has a general flow passage 11 used for opening and closing a normal door, and a fire prevention passage 12 configured to open the flow passage in response to temperature or smoke in case of fire and to close the door by itself. Become,

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One part of the piston 20 is provided with an auxiliary check valve is installed separately to switch the door of the stationary state to the operating state.

1 to 4 will be described in more detail.

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The general purpose flow path 11 is a general purpose electric power formed at a position that can block the oil hole by the piston flange 22 of the piston 20 when the piston 20 moves to the body front chamber 10a by opening the door. The primary and secondary door closing speeds are measured when the piston 20 is returned to the body rear chamber 10b by the measured air hole 11a and the door closing operation.

General rear-vessel side holes (11b.11c), each formed at a distance to control

It is composed of a connection, the end of the body rear thread (10b) side of the flow path (11)

Speed adjusting screw (13) is configured to adjust the closing speed of the door by adjusting

It will be provided.

The fire passage 12 has a portion connected to the body front chamber 10a side as shown in FIG.

A hole is formed, and the other side is formed with a hole to be connected to the body rear thread (10b) side, the other end flow path is provided with a fire valve (70) is installed so that it is normally blocked by the fire valve valve (71). It is composed.

Referring to Figure 6 in detail the structure of the fire valve 70,

Fire protection body 74 is connected to the end of the fire protection channel 12 of the body 10,

The fire protection valve side 71 is inserted into the fire passage 12, and the sliding support on the inner circumferential surface and configured to open and close the fire passage 12, the elastic valve side 71 to elastically support. Spring 72, which is configured to be inserted into the fire protection body 74, one part supports the fire valve valve 71 and the other is elastically supported by the elastic support 75

Support rod 73, the elastic support 75 is formed of an elastic body in a predetermined shape and inserted into a groove formed in the fire protection body 74 to surround the outer circumferential surface to elastically support the support bar 73 by the inner protrusions, Installed at the end of the elastic support (75) to a certain temperature or more

When the smoke is detected by the rise or yearbook it is melted to be composed of a fuse 76 is configured to detach the elastic support 75 from the fire protection body (74).

Looking at the operation state of the fire valve configured as described above with reference to Figures 6 to 8 as follows.

When the surroundings rise above a certain temperature due to the fire, the fuse 76 is melted as shown in FIG. 7. By melting the fuse 74, the elastic support 75 is subjected to its elastic force.

By returning to the original shape is separated from the fire protection body (74).

When the elastic support 74 is separated from the fire protection body 74, as shown in Figure 6 is supported by the elastic support 74 to close the support rod 73 and the fire valve valve closing the fire passage (12) ( 71 pushes back by the elastic force of the spring 72 provided in the fire prevention flow path 12, and opens the fire prevention flow path 12. FIG.

When the fire passage 12 is opened, the working oil in the body rear chamber 10b moves to the body front chamber 10a as shown in the arrow of FIG. 6, so that the piston 20 moves to the body rear chamber 10b and the door itself. It will be closed.

8 is another embodiment when using the yearbook detector 90 and an external power source,

Yearbook sensor 90 and external power is additionally supplied is configured to be directly connected to the fuse (76).

That is, when the smoke detector 90 detects the smoke, the fuse 76 is melted by a separate external power supply supplied through the auxiliary contact of the smoke detector 90, so that the elastic support 75 is removed.

The fire protection channel 12 can be opened by being separated from the fire protection body 74.

When using an external power source, the elastic support 75 and the fuse 76 are configured to be insulated from each other by the insulator 77 so that the external power does not flow into the elastic support 75 or other devices.

Since the fire valve 70 configured as described above can be used continuously only by replacing the fire fuse 76 after operating in a fire, the maintenance cost is also reduced.

Will be.

The piston 20 has a part for forming a space for accommodating the spring 40, and the other part is formed with a through hole 24 through which the working oil can move, and in the through hole 24,

To transfer the hydraulic fluid to the body rear thread 10b from the body front chamber 10a in a constant direction

첵 A valve 26 is installed.

In addition, two to four auxiliary oil holes 27 are separately formed around the through hole 24. The auxiliary oil holes 27 configured as described above are oil holes of the auxiliary valves described below, and usually, the auxiliary valve valve side ( 50) to be blocked.

In addition, the outer peripheral surface of both ends of the piston 20 is in close contact with the inner peripheral surface of the body 10

Piston flange 22 is formed, the outer peripheral surface portion of the pinion (30) and

The rack 20a is formed by a predetermined length so as to be bound and transmit power.

In addition, through the piston outer peripheral surface and the piston inner peripheral surface for the movement of the operating oil

The hole 21 is formed.

The piston 20 configured as described above is configured to be inserted into the inner space of the body 10 to perform a sliding motion, and the front body 10a is elastically supported by the spring 40, and the piston 20 The rack 20a formed at one portion of the outer circumferential surface is engaged with the pinion 30 to be described below, so that the power can be transmitted.

Referring to the accompanying drawings, a second check valve will be described with reference to FIG.

The auxiliary check valve is inserted into the piston 20 is formed for the book valve of the piston 20

One or two to four auxiliary oil holes 27 formed separately around the through hole 24,

Blocking the auxiliary oil hole (27) is configured to control the movement of the operation oil

The auxiliary check valve side 50 is configured.

The central part of the auxiliary valve valve side 50 is formed with a hole 52 so that the working oil flows,

A portion of the auxiliary oil hole 27 in contact with the oil hole 52 and the auxiliary convex valve valve groove 51 is formed concentrically, is inserted into the inner peripheral surface of the piston 20 is configured, one part

It is elastically supported by the spring 40, the other side is configured to be in contact with a portion in the piston 20 to block the auxiliary oil hole 27 formed in the piston 20.

A cylindrical auxiliary valve valve groove 51 formed in the auxiliary valve valve side 50 is the pressure of

When the valve valve 50 is lifted due to the increase, it does not get caught in the inner peripheral surface of the piston 20.

It is configured to be easily lifted at the same pressure.

The auxiliary check valve configured as described above usually has a spring (40) for the auxiliary check valve side (50).

Since it is pressed, the auxiliary oil hole (27) is blocked so that the working oil cannot be moved.

However, when the piston 20 is moved to the rear body chamber 10b by an external force, the hydraulic fluid on the rear body chamber 10b side is lifted by lifting the auxiliary valve side 50 due to the increase in pressure.

Because it can move to the front of the chamber 10a, it is not possible to close the stationary door.

Will be.

The pinion 30 is housed in the pinion housing 16 of the body 10, and is directly connected to the lever mounted on the door, and rotates by a certain angle according to the opening and closing angle of the door, and a portion of the outer peripheral surface of the piston 20. It is configured to transmit power by being engaged with the rack (20a) formed in the.

One portion of the spring 40 is supported on the body front chamber 10a side, and the other

The piston 20 is configured to be supported with a portion of the auxiliary valve valve side 50 inside the door

By opening the piston 20 by the elastic force accumulated at the time of opening is to serve to close the door slowly.

Looking at the operation state of the fireproof door closer configured as described above by the accompanying drawings

As follows.

First, the operation state when the door closer is stopped will be described with reference to the accompanying drawings.

As shown in FIG. 1, when the door is slowly opened, the pinion gear 30 connected by the lever will rotate slowly in the counterclockwise direction as shown by the arrow.

At this time, the piston 20 which is engaged with the pinion gear 30 is in the body front direction 10a.

Will move.

When the piston 20 is moved, the compression spring 40, which is an elastic body, is in close contact with the body front chamber 10a and accumulates elastic force to be used as return energy when the door is closed.

At this time, the hydraulic fluid in the body front chamber (10a) is moved from the body front chamber (10a) to the body rear chamber (10b) like the normal door closer by the check valve 26 in the piston (20).

At this time, when the hand is released from the door by the elastic force of the spring (40) 20

Slowly move to the body rear thread (10b) side, at this time

Hydraulic fluid flows from the body rear chamber 10b to the body front chamber 10a through the general use flow passage 11.

Since it moves, it serves to close slowly like a normal door closer.

However, when the door (not shown) is continuously opened, the general front chamber side hole 11a is formed by the piston flange 22 formed on the outer circumferential surface of the piston 20 at a predetermined point or more.

Will be blocked.

In this way, if the external force is removed in a state in which the general-purpose front chamber side hole 11a is blocked.

The spring 40 strongly pushes the piston 20 in the direction of the body rear thread 10b, but the movement of the operating oil is blocked so that the hydraulic oil cannot move.

Therefore, the piston 20 does not move in the direction of the body rear chamber (10b) is to keep the door stopped.

Referring to FIG. 3, the operation state of the auxiliary check valve when the door closer maintained in the stopped state is switched to the closed state of the door is as follows.

When an external force is applied to the door (not shown) in the closing direction, the pinion 30 rotates clockwise.

And the piston 20 engaged therewith is also the body rear thread 10b.

Will try to move in the direction.

At this time, the hydraulic oil in the body rear chamber (10b) is to increase the pressure.

When the working oil pressure on the body rear thread (10b) side is increased, as shown in Figure 3 the hydraulic oil to overcome the elastic force of the spring (40) through the auxiliary oil hole (27) formed in one portion of the piston (20) Lifting the valve valve 50 to open the auxiliary flow path (27).

When an external force is applied in the direction of closing the door for a certain period of time,

By the hydraulic fluid of the body rear thread (10b) is gradually moved to the body front chamber (10a),

Due to the movement of the operating oil, the piston 20 moves in the direction of the body rear thread 10b

The general use flow passage 11 blocked by the piston flange 22 gradually opens.

Thus, the movement of the operating oil is freed by opening the general use flow path 11,

From the point of view, even if the external force is removed from the door will be able to function like a normal door closer.

Referring to Figures 5 and 6 attached to the operation state during the fire as follows.

 With the door open and still, the ambient temperature is constant due to fire.

If the above rises to the end of the elastic member 75 of the fire valve 70 as shown in FIG.

The fixed fuse 76 is to be directly melted.

When the fuse 76 is melted, the elastic support 75 supported by the fuse 76 is removed from the fire protection valve body 74 by the elastic force.

When the elastic support 75 is removed from the fire protection valve body 74 to the elastic support 75

By the elastic force of the spring 72 formed in the fire passage 12, the supporting rod 73 and the fire protection valve side 71, which were elastically supported, are retracted.

The oil passage 12 is opened so that the hydraulic oil is discharged from the body rear chamber 10b as shown by the arrow.

Since the body is moved to the front chamber 10a, the door can be closed by itself.

8 shows another embodiment when using the yearbook detector 90 and an external power source.

In general, the yearbook detector (90) is built in itself when the operation to detect the smoke

Contact is operated so that the signal can be output to the outside.

According to the present invention, the fire valve valve 71 can be opened by melting the fuse 76 by an external power supply separately supplied using the contact point of the yearbook sensor 90 in the event of a fire.

.

That is, when the yearbook detector 90 detects a fire, the auxiliary point in the yearbook is attached, so that the fuse 76 connected to the external power source is melted so that the fireproof body 74

The elastic support 75 can be separated.

Therefore, since the fire passage 12 is opened in the same manner as above,

In the same way, the door can be automatically closed.

When such a fire path 12 is opened in the body rear chamber (10b) of high pressure

The hydraulic oil moves to the lower pressure body chamber (10a) so that no additional force is applied.

Even in case of fire, the door can be closed automatically.

The fire door closer operating in this way is a fire path 12 and

Since the general purpose flow path 11 is opened at the same time, the movement of the flow path is smooth, so that the door can be closed more quickly and powerfully than when the general purpose flow path 11 is normally operated.

As described above with reference to the accompanying drawings and embodiments,

The invention is not limited to the specific embodiments and in the technical field to which the invention pertains.

Modifications that can be easily carried out by those skilled in the art of the present invention

It is obvious that it belongs to the technical idea.

10: body 10a: body front thread 10b: body rear thread
11: General-use flow path 11a: General-use chamber side hole 11b, 11c: General-use chamber side hole
12: Fire prevention channel 12a: Fire prevention chamber side hole 12b: Fire protection rear thread side hole
13: Speed adjusting screw
15: body cap
16: pinion compartment
20: piston 20a: rack
21: piston hole
22: piston flange
24: through hole
26: check valve
27: Auxiliary Merit
30: pinion gear
40: spring
50: auxiliary valve valve side 51: auxiliary valve valve groove 52: auxiliary valve valve flow path
70: fire protection valve
71: fire valve valve 72: spring 73: support rod 74: fire protection body
75: elastic support 76: fuse 77: insulator
90: Yearbook Keeper

Claims (4)

It is mounted to a part of the door and has a space formed therein, the hydraulic fluid is received inside the space, the body 10 and the flow path (working oil passage) and the pinion housing 14 is formed:
The body 10 is inserted into the inner space is in sliding contact, one side is elastically supported by the spring 40, the other side is composed of a check valve 26, the outer peripheral surface of the piston is formed a rack ( 20 and: a spring 40 mounted inside the body 10 and configured to elastically return the piston 20; In the conventional door closer consisting of a pinion gear (14), which is received in the pinion housing (14) of the body (10) and is assembled with the rack (20a) formed in the piston (20) to transmit power.
A flow path (working oil passage) formed in the body 10 opens a general flow path 11 used for opening and closing a normal door and a fire protection valve 70 separately installed in the flow path by temperature and smoke in a fire. As a fire protection passage 12 is formed separately to be able to close the door by itself, and the auxiliary valve is installed separately inside the piston 20,
The general purpose flow path 11 has a flow path connecting the general front room side hole 11a formed in the body front chamber 10a and the general rear thread side hole 11b formed at the distal end of the body rear chamber 10b, and has a general front room side hole. 11a is formed at a position where the piston 20 is blocked by the piston flange 22 when the piston 20 is advanced over a predetermined distance to block the movement of the hydraulic oil,
The fire prevention flow path 12 has a flow path connecting the fire prevention chamber side hole 12a formed in the front chamber 10a and the fire prevention chamber side hole 12b formed at the distal end of the body rear chamber 10b, and the fire path is formed in the fire path. Fire door type door closer, characterized in that the valve 70 is installed to shut off during normal times and open the flow path by the operation of the fuse (76) in case of fire. Claim 1
The auxiliary check valve is an auxiliary oil hole (27) formed in a portion of the piston (20); Is inserted into the piston 20 is configured to be blocked by pressing the auxiliary oil hole (27), the auxiliary valve valve side 50 is formed with a separate hole in the center; consisting of, the auxiliary valve valve side (50) One side of is characterized in that it is elastically supported by the spring 40 is configured to move the hydraulic fluid from the body rear chamber (10b) to the front body chamber (10a) when the hydraulic oil pressure of the body rear chamber (10b) rises above a certain pressure Fireproof door closer. Claim 1
The fire protection valve 70 includes a fire protection body 74 which is coupled to the end of the body rear chamber 10b side of the fire passage 12 formed in the body 10; A fire prevention valve side 71 inserted into an end portion of the fire prevention channel 12 and configured to open and close the channel and the other side supported by the support rod 73; Spring 72 is inserted into one side of the fire passage (12) to elastically support the fire valve side 71: a support rod inserted into the fire body body 74 to support the fire valve side 71 ( 73); An elastic support (75) formed of an elastic body having a predetermined shape and surrounding the outer circumferential surface of the fire protection valve body (74) and supporting the support rod (73); It is installed at both ends of the elastic support 75 to maintain the elastic support 75 in a predetermined shape, the fire protection door closer characterized in that it is composed of a fuse (76) that is melted at a predetermined temperature or more and is separated from the fire protection body (74). . Claim 3
Fuse 76 is installed at the end of the elastic support 75 is characterized in that configured to connect the power source so that it can be directly melted at a predetermined temperature or melted during operation of the annual sensor by the power drawn from the outside Fireproof door closer.

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