KR20050090567A - Door-closer - Google Patents

Abstract

The present invention relates to a door closer, and more particularly, it is possible to prevent smoke or toxic gas from spreading through the door passage in the event of a fire in a building, and also to easily control the open or closed state of the door. To a door closer.

The door closer is provided with link rods that are capable of linkage movement between the door and the wall, and rotation shafts that are capable of power transmission with the link rods, and means for accumulating tension by the rotational force of the shafts. It includes a main body having a locking device for fixing the door in an open or closed state while controlling the rotation of the rotary shaft,

The locking device includes a pressurizing port for controlling the rotational motion by physical contact corresponding to the circumferential surface of the rotary shaft, a power generating unit for generating power for the locking or releasing operation of the pressurizing port, and controlling the operation of the unit. Contains the control unit.

Description

Door closer {door-closer}

The present invention relates to a door closer, and more particularly, it is possible to prevent smoke or toxic gas from spreading through the door passage in the event of a fire in a building, and also to easily control the open or closed state of the door. To a door closer.

In general, a door closer is installed in a swing door of a building to smoothly open or close a door by repeatedly accumulating tension and linkage movement, and keep the door always closed by the accumulated tension. For example, in case of fire in a building, smoke or toxic gas is used for the purpose of preventing the diffusion of the other area through the passage of the door.

Briefly describing the structure of the door closer, the link rods are connected between the door and the wall to enable the linkage movement, and the rotary shafts are connected to the link rods so as to transmit power. It consists of a structure including a main body having a means for accumulating tension by means of, the compression coil spring having a constant modulus of elasticity is mainly used.

Briefly describing the action of the tension accumulating means, the rotational force is transmitted to the rotating shaft by the linkage movement of the link rod when opening or closing the door, for example, while receiving the rotational force of the rotating shaft, for example, When the tension is accumulated by the rotation of the rotating shaft and the external force is removed while the door is opened, the accumulated tension is transmitted to the rotating shaft and the door is automatically closed by the link rods.

At this time, the power transmission unit of the rotary shaft and the tension accumulating means for transmitting power by the interaction of the rotary motion and the linear motion, for example, the accumulation of power as described above when opening and closing the door by a pair of rack and pinion engagement and It is made of a structure that can be delivered.

However, since the conventional door closer has only a single function for closing the door by the tension accumulated by the tension accumulating means, such a structure is such that the passage is always blocked by the door. There is a structural limitation in implementing a function for improving the air permeability of the inside, and to easily control the opening and closing state of the door when there are a lot of goods or pedestrians to improve the ease of use and walking environment.

In addition, in most buildings, the door is fixed by opening a wedge between the bottom and the bottom of the door in order to solve the above problems. Therefore, smoke or gas can easily spread to the evacuation area through the door passage, causing large accidents, and also the hinges of the door are easily broken and deformed by the wedges sandwiched between the door and the floor, which reduces the durability of the door. It is a factor.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to guide the opening or closing operation of the door as well as to easily control the opening or blocking state of the door by a simple operation. To provide a door closer that can be.

In order to realize the object of the present invention as described above, link rods are connected between the door and the wall so that the linkage movement is possible, and a rotating shaft is connected to the link rod so as to transmit power. A main body having a means for accumulating tension, and a locking device for fixing the door in an open or closed state while controlling the rotation of the rotary shaft,

The locking device includes a pressurizing port for controlling the rotational motion by physical contact corresponding to the circumferential surface of the rotary shaft, a power generating unit for generating power for the locking or releasing operation of the pressurizing port, and controlling the operation of the unit. Provided is a door closer including a control unit.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 to 2 and 3, the door closer according to the present invention, the link rod (2) is connected to the linkage movement between the door (D) and the wall (W), the link A rotating shaft S, which is connected to the rod 2 and capable of power transmission, is installed and has a main body 4 having means for accumulating tension by the rotating force of the shaft S, and controls the rotation of the rotating shaft S. While locking the door (D) in the open or closed state includes a locking device (6).

In the present embodiment, the main body 4 is installed on the side of the door D in the same posture as in FIG. 1, and the door D and the wall W correspond to the main body 4 as shown in the drawing. As an example, the link rods 2 are connected to each other so that the link node movement is possible.

As shown in FIG. 1, the link rods 2 are connected in a pair, and one end thereof is fixed by a hinge coupling on the side of the wall W, and the other end thereof is driven by the rotation shaft S of the main body 4. Delivery is secured.

In addition, the rotation shaft (S) is rotatably installed in the posture as shown in the figure so as to enable the power transmission and the tension accumulating means described later in the main body 4, as shown in Figs.

The link rod 2 having the above-described structure opens the door D so that the rotation shaft S may perform an operation for tension accumulation inside the main body 4 by a predetermined linkage movement. When the external force is removed from the door (D), it is made of a conventional link structure that receives power from the rotating shaft (S) rotated by the accumulated tension and performs the linkage movement so that the door (D) is closed.

The main body 4 serves as a kind of case for providing a space for installing the means for tension accumulation therein, in the present embodiment is made in the shape as shown in Figure 2 in the drawing on the door (D) side The one installed in the same posture is shown as an example.

The material of the main body 4 may be a metal material such as aluminum or a synthetic resin material may be used and is firmly fixed to the door (D) side by a fastening member such as a bolt. Although not shown in the drawing, the main body 4 may be provided on the wall W side.

A means for accumulating tension is installed in the space part inside the main body 2 so that the door D is automatically closed after the door D is opened. In this embodiment, the sleeve 8 has a constant length as shown in FIG. ) Is installed in the main body 4 so as to be movable along a predetermined section, and the elastic member 10 for accumulating tension is installed in the sleeve 8 as an example.

As shown in FIG. 2, the elastic member 10 is set such that both ends of the elastic member 10 are held in the same posture as shown in the figure between the inner wall surface of the sleeve 8 and the inner wall surface of the main body 4.

In addition, the sleeve 8 is connected to the rotating shaft (S) so as to transmit power so that the tension is accumulated in the elastic member 10 when opening the door (D), in the present embodiment rack as shown in FIG. And the pinion structure of the power transmission unit 12, and the rotation shaft (S) and the sleeve (8) is set to enable mutual power transmission by their engagement.

In the structure of the power transmission unit 12, as shown in FIG. 4, when the door D is opened, the rotational power of the rotating shaft S rotated by the linkage movement of the link rods 2 is engaged with the rack and the pinion. 5, the sleeve 8 is slid to the left side so that tension is accumulated by the elastic member 8, and the door D is opened by this operation. When the external force is removed from the linear shaft of the sleeve (8) moving to the right when the reference to Figure 6 based on the accumulated tension of the elastic member 10, that is, the elastic repulsion force is converted into rotational power (S) In addition to the rotation and the rotation of the shaft (S) as shown in Figure 7 is a power transmission structure to automatically close the door (D). Such a structure has been described as an example of one of the conventional power transmission method widely used in the field according to the present invention, a more detailed description thereof will be omitted.

On the other hand, the main body 4 is provided with a locking device 6 for controlling the rotation operation of the rotary shaft (S), the locking device 6 is physically corresponding to the circumferential surface of the rotary shaft (S) A pressurizing opening 14 for controlling the rotation operation by contact, a unit 16 for generating power for the locking or releasing operation of the pressing opening 14, and a control for controlling the operation of the power generating unit 16; In this embodiment, the unit 18 is provided, and as shown in FIG. 2, the unit 18 is provided in an auxiliary space formed above the main body 4 to correspond to the rotation shaft S.

The pressure port 14 is for pressing the circumferential surface of the rotary shaft (S) by physical contact, and is installed as a hinge coupling to the bottom surface of the auxiliary space of the main body 4 in a posture as shown in FIG. At one end, a protrusion 14a as shown in the drawing is formed.

In addition, the rotary shaft S rotates in the same direction as the shaft S, as shown in FIG. 2, so that the rotation operation of the rotary shaft S can be smoothly controlled by the contact of the pressure port 14. In addition, for example, a plurality of grooves 20a for fitting the protrusions 14a of the pressing hole 14 in the circumferential direction, for example, the pinion-shaped connector 20 is integrally fixed.

As shown in FIG. 8, the locking structure of the pressing hole 14 is easily locked or released from the rotation shaft S while the protrusion 14a is fitted into the grooves 20a of the connector 20. Not only this, but also according to the opening angle of the door (D) can be a structure that can be easily fixed correspondingly.

In addition, the grooves 20a formed in the connector 20 may be, for example, a power generation unit described later when the protrusion 14a of the pressing hole 14 is fitted into one groove to lock the rotation shaft S. It is made to be able to open the door D with a physical force greater than the control power of (16). In the present exemplary embodiment, when the grooves 20a formed on the outer circumferential surface of the connector 20 are applied to the grooves 20a when the physical force is applied to the grooves 20a, the protrusions 14a that are in the locked state are locked. As shown in FIG. 9, a one-way locking structure that can ride over the surfaces of the grooves 20a, for example, has a latch gear structure.

The power generating unit 16 is capable of transmitting power for the locking operation of the pressure port 14 to the opposite end of the projection 14a with the hinge portion of the pressure port 14 therebetween as shown in FIG. 2. Connected. In this embodiment, the power generating unit 16 is composed of a magnetic cylinder for generating a linear power, the piston rod of the cylinder is connected to the pressure port 14, as shown in the drawing so as to enable power transmission as an example. It is shown.

In addition, the power generation unit 16 is a structure that generates power by receiving electricity from the device, although not shown in the drawing, is connected to a separate electricity supply device to supply electricity.

The control unit 18 is for controlling the operation of the power generating unit 16, that is, the magnetic cylinder. In this embodiment, the control unit 18 is capable of turning on / off for controlling the operation of the power generating unit 16. An example of a switch, which is provided outside the auxiliary space of the main body 4 as shown in FIG.

The control unit 18 is set on a section for supplying electricity to the power generating unit 16 as shown in FIG. 2 to control the operation of the power generating unit 16 by a switching operation to supply or cut off electricity. It is a structure. As such, the control method may be easily implemented by those skilled in the art, and thus a detailed description thereof will be omitted.

Therefore, in the door closer according to the present invention having the above-described structure, when the door D is opened, the elastic member 10 is tensioned in the main body 4 while the sleeve 8 moves as shown in FIG. 5. And the external force is removed while the door D is opened, the door D has an ordinary function as shown in FIG. 7 by the accumulated tension, that is, the elastic repulsive force of the elastic member 10. Instead, the pressing device 14 controls the rotation of the rotary shaft S by an operation of switching the locking device 6, that is, the control unit 18, so that the door D is opened as shown in FIG. 5. For example, it is possible to fix the furnace, for example, to transport the goods through the passage of the door (D) or to provide an optimal passage environment in times of heavy pedestrian traffic.

In the above embodiment, a structure for fixing the door D to an open state at a specific angle using the locking device 6 is illustrated in the description and drawings as an example, but is not limited thereto.

Referring to FIG. 10, a sensor 22 is installed on the electricity supply section applied to the power generating unit 16 to sense the flow of current flowing through the section, and the door D is opened by the sensor 22. It may be made of a structure for easily sensing the open and closed state of the.

The sensor 22 is, for example, a well-known current sensing sensor that can easily sense if the operating current for the operation of the power generating unit 16 is supplied over the set range through the electricity supply section. Can be used.

Although the sensor 22 is not shown in the drawing, the sensor 22 is set to transmit a signal sensed to a central management office or a security company, and the like may be transmitted by an existing communication cable or wireless communication.

As described above, if the locking device 6 is configured to sense the electric flow supplied to the power generating unit 16, additional security and method functions, for example, intrusion of the outside through the door D at night. It can be easily confirmed.

That is, when the locking device 6 is set to be locked by the pressing hole 14 in a state in which the door D is closed, the connection port of the rotary shaft S when the door D is forcibly opened from the outside. The pressure port 14 caught in the groove of the groove 20 is pushed backward, and the power generating unit 16 connected to the pressure port 14, that is, the magnetic cylinder, is kept in the locked state without the pressure port 14 being pushed. It can consume more current than average current for operation.

Therefore, when a current exceeding a permissible range is supplied to the unit 16 in a section in which electricity is supplied to the power generation unit 16, the sensor 22 senses it and transmits it to, for example, a central management office or a security company. Further improved security and method effects can be obtained against external intrusion through the passage area of the door D.

In the above, a preferred embodiment of the door closer according to the present invention has been described, but the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. This also belongs to the scope of the present invention.

As described above, the door closer according to the present invention not only guides the opening or closing operation of the door, but also can easily control the opening or closing state of the door to correspond to the passage environment required by the locking device. Improved aisle environment and ease of use are obtained.

The locking device has a structure capable of fixing or releasing the rotating shaft by physical contact by the linkage movement of the link rods during the opening or closing of the door, so that the structure for locking the rotating shaft is simple and simple switching. By operation, the door can be easily fixed within various opening angle ranges.

1 is a use state diagram showing a state in which the door closer according to the present invention installed on the door.

Figure 2 is a partial cutaway perspective view for explaining the internal structure of the door closer according to the present invention.

3 is a side cross-sectional view of FIG.

Figure 4 is a plan view for explaining the action when the door opening of the door closer according to the invention.

5 is an enlarged cross-sectional view illustrating a process of accumulating tension for the closing operation of the door by the action of FIG.

6 is an enlarged cross-sectional view for explaining a process in which the door is closed by the tension accumulated in the state of FIG.

7 is a plan view showing a state in which the door is closed by the tension action of FIG.

8 is a plan sectional view for explaining the internal structure of the locking device of FIG.

9 is an enlarged view illustrating main parts for explaining the locking structure of FIG. 8;

10 is a partial cutaway perspective view for explaining another embodiment of the door closer according to the present invention.

Claims (6)

Link rods are connected between the door and the wall so that the linkage movement is possible, and a rotating shaft is connected to the link rod so as to transmit power, and has a main body having means for accumulating tension by the rotational force of the shaft, It includes a lock to secure the door in the open or closed state while controlling the rotation of, The locking device includes a pressurizing port for controlling the rotational motion by physical contact corresponding to the circumferential surface of the rotary shaft, a power generating unit for generating power for the locking or releasing operation of the pressurizing port, and controlling the operation of the unit. Door closer with control unit. The door closer of claim 1, wherein the pressing hole locks or releases the rotation shaft while being detachably fitted to correspond to the circumferential surface of the rotation shaft. The door closer of claim 1, wherein the power generating unit comprises a magnetic cylinder that generates linear power for the locking operation of the pressure port. The door closer of claim 1, wherein the control unit comprises a switch capable of a switching operation for applying or cutting off electricity on the electricity supply section supplied to the power generating unit. The door closer of claim 2, wherein the groove part and the protrusion part have a mating structure in which the rotation shaft can be locked in one direction by physical contact therewith. The method of claim 1, wherein the door closer further comprises a sensor for sensing the supply environment of the current supplied to the power generating unit side, The sensor is located on the electricity supply section of the power generating unit door closer is set to enable the sensing of the flow or strength of the current supplied through this section.