KR20240051405A - Device for maintaining opened state of door with door check - Google Patents

Abstract

The electromagnet type door opening maintenance device connected to the door check according to the present invention is an electromagnet type door opening maintenance device connected to the door check, in which a link rotator having a semicircular groove is rotatably installed within the case. An insertion port having a tip roller inserted into and detached from the groove of the link rotating body is movably installed in the insertion port installation portion of the linear moving body so as to be movable to the center of the link rotating body, and is provided with the insertion port mounting portion and is provided on a side surface. The linear moving body having a side extension portion is installed in the case to be movable in a direction perpendicular to the moving direction of the insertion hole, and a compression spring for elastically supporting the insertion hole is installed in the insertion opening installation portion of the linear moving body, An adjustment bolt for adjusting the elastic force of the compression spring is fastened to the insertion hole installation part of the linear moving body, a semicircular lever roller insertion groove is formed in the side extension of the linear moving body, and a lever roller insertion groove of the linear moving body is formed. A lever having a lever roller to be inserted and removed at one end is installed to rotate within the case, and a lever return spring for returning the lever to its initial state is installed between the other end of the lever and one side of the case, A magnetic material is fixedly installed on one side of the other end of the lever, and an electromagnet that generates magnetic force by applied electricity is fixed to the case. When the magnetic material is fixed by the magnetic force of the electromagnet, the lever roller of the lever moves in the straight line. It is inserted into the lever roller insertion groove of the moving body to hinder the movement of the linear moving body.
Therefore, in the present invention, when a magnetic body is fixed by the magnetic force of an electromagnet, the lever roller of the lever is inserted into the lever roller insertion groove of the linear moving body to hinder the movement of the linear moving body, so that the linear moving body can be easily stopped even when a small capacity electromagnet is used. It has the effect of maintaining the condition.

Description

Electromagnet type door opening maintenance device connected to the door check {DEVICE FOR MAINTAINING OPENED STATE OF DOOR WITH DOOR CHECK}

The present invention relates to an electromagnet-type door open maintenance device connected to a door check installed on a door through a link. More specifically, it not only maintains the open state of the door by an electromagnet, but also maintains the door open by an external force or external signal. It relates to an electromagnet type door opening maintenance device connected to a door check that allows the state to be released.

Generally, a door check that closes the door is installed on a door such as a front door, and a door open maintenance device is installed on the door frame to keep the door with the door check installed in an open state.

Of course, the door check is fixed to the door, and the door open maintaining device is installed on the door frame. The door check and the door open maintaining device are usually coupled to each other by two links. Accordingly, the spring in the door check increases the closing force of the door. This occurs, and not only can the door be maintained in a completely open state by the door open maintenance device, but the motor in the door open maintenance device (applicable to the motor type) is activated to release the stopped state of the door, allowing the door to be checked. It is closed by .

For example, in the past, an electromagnet-type technology that stops the open state of the door was developed and registered as Patent Application No. 10-2015-0030427. When comparing the contrast with the technology of the present invention, the restraint part is A confining wheel fixed to the coaxial axis and having a confining groove recessed into the outer diameter; a pressure lever that is fixed to the body in a hinged structure at one end through a hinge pin and rotates inward and outward around the hinge pin; A restraining pin disposed in a forward-retracting structure on one side of the restraining wheel, the rear end of which is inscribed and supported on the inner wall of the pressing lever; And an electromagnet unit that generates electromagnetic force through the fire current applied from the power control unit and secures the other end of the pressure lever by magnetically pulling it inward through the electromagnetic force. The pressure lever is connected to the electromagnetic force provided by the electromagnet unit. It is configured to restrain the restraint wheel by rotating the restraint pin into the restraint groove of the restraint wheel while rotating in the inward direction, so that the fire door is restrained in an open state by the magnetic coupling generated between the pressure lever and the electromagnet unit, and the fire door is When a relatively larger closing force than the magnetic coupling force that restrains an open fire door is provided or the application of fire current to the electromagnet unit is blocked, the restraining pin is released from the restraining groove of the restraining wheel and the fire door is automatically closed, and the pressure lever is configured to close. The pressure lever is constantly pressed in the inward direction by the elastic member, and is configured to always elastically adhere to the rear end of the restraining pin and the magnetic force surface of the electromagnet unit by the elastic force provided through the elastic member.

In this prior art, the closing force of the door and the elastic force within the door closer are overcome by the force of the user trying to keep the door open and then manually close the door, thereby overcoming the elastic force of the elastic member and the magnetic force of the electromagnet, thereby causing the magnetic force of the magnetic body fixed in contact with the electromagnet. The door can be closed as the fixing piece is spaced apart from the electromagnet, and since a pressure lever in the form of a lever is needed to increase the fixing force with the power of the electromagnet, when the user opens and closes the door in normal times, magnetic force is continuously generated in the electromagnet and the magnetic force Since the fixing pieces operate to separate and come into close contact, there is a disadvantage in that shock occurs between the electromagnet and the pressure lever during the adhesion process, which adversely affects the durability of the electromagnet when the door opening and closing process is repeated by the user.

Therefore, in order to improve the above shortcomings, the applicant of the present invention developed a technology filed under Patent Application No. 10-2022-107550, but in this technology, the capacity of the electromagnet increases, so an improvement measure to reduce the capacity of the electromagnet is needed. This was needed.

The present invention was invented to solve the problems of the prior art as described above. In particular, the purpose of the present invention is not only to release the open state of the door by an electromagnet, but also to use the electromagnet and the magnetic body during the door opening and closing process by the user in normal times. By maintaining the attached state, the durability of the electromagnet can be easily increased as no shock occurs to the electromagnet in normal times. An electromagnet type door opening maintenance device that is connected to the door check is provided using a small-sized electromagnet. It lies in doing it.

In order to achieve the above object, the present invention is an electromagnet type door opening maintenance device connected to a door check, wherein a link rotator having a semicircular groove is rotatably installed in the case, and the link rotor is provided. An insertion port having a tip roller that is inserted and removed (inserted or removed) from the entire groove is movably installed in the insertion port installation portion of the linear moving body so as to be movable to the center of the link rotating body, and is provided with the insertion port installation portion and is provided on the side. The linear moving body having a side extension portion is installed in the case to be movable in a direction perpendicular to the moving direction of the insertion hole, and a compression spring for elastically supporting the insertion hole is installed in the insertion opening installation portion of the linear moving body, An adjustment bolt for adjusting the elastic force of the compression spring is fastened to the insertion hole installation part of the linear moving body, a semicircular lever roller insertion groove is formed in the side extension of the linear moving body, and a lever roller insertion groove of the linear moving body is formed. A lever having a lever roller to be inserted and removed at one end is installed to rotate within the case, and a lever return spring for returning the lever to its initial state is installed between the other end of the lever and one side of the case, A magnetic material is fixedly installed on one side of the other end of the lever, and an electromagnet that generates magnetic force by applied electricity is fixed to the case. When the magnetic material is fixed by the magnetic force of the electromagnet, the lever roller of the lever moves in the straight line. Provided is an electromagnet type door opening holding device connected to a door check that is inserted into the lever roller insertion groove of the moving body and prevents the movement of the linear moving body.

Unlike the conventional technology, the electromagnet type door opening maintenance device connected to the door check according to the present invention, which is made in this way, is different from the conventional technology when the user holds the door and applies an external force in the direction of closing the door while the door is normally maintained open. The rotational force of the rotating body, together with the elastic force of the spring within the door check, allows the user's external force to overcome the elastic force of the compression spring to close the door, and the electromagnet and magnetic material remain attached during the normal door opening and closing process. There is an advantage that the durability of the electromagnet can be easily increased because external shock is not generated.

Of course, when the electricity applied to the electromagnet is cut off, the insertion port and the linear moving body are moved by the rotational force of the link rotating body, and the insertion hole is easily moved in a straight line, so that the inserting hole is separated from the groove of the linking rotating body, so that the door is kept open quickly and smoothly. The door open maintenance state can be canceled.

In particular, in the present invention, when the magnetic body is fixed by the magnetic force of the electromagnet, the lever roller of the lever is inserted into the lever roller insertion groove of the linear moving body to hinder the movement of the linear moving body, so even if a small capacity electromagnet is used, the linear moving body can be easily maintained in a stopped state.

Figure 1 is a plan view of a portion of a door to which an electromagnet type door open maintaining device connected to the door check of the present invention is applied.
Figure 2 is a partial cross-sectional view showing an enlarged view of the electromagnet type door opening maintaining device connected to the door check according to the present invention.
Figure 3 is a partial cross-sectional view showing the door opening maintaining device according to the present invention, illustrating when an external force is applied by the user.
Figures 4 and 5 are partial cross-sectional views showing the door opening maintaining device according to the present invention, illustrating when the electricity applied to the electromagnet is cut off.
Figures 6 and 7 are partial cross-sectional views showing another example of an electromagnet type door opening maintaining device connected to a door check according to the present invention.

Preferred embodiments of the present invention will be described in more detail based on the attached drawings.

1 to 7 are diagrams showing an electromagnet type door open maintaining device connected to the door check according to the present invention. The door open maintaining device 1 according to the present invention is installed on the frame 2a of the door 2. A door check (3) equipped with a closing force to close the door (2) is installed on the door (2), and two links (4) are installed between the door open maintenance device (1) and the door check (3). are interconnected.

Of course, normally, the door 2 is always closed by a spring (not shown) in the door check 3, and the door open maintaining device 1 has two doors to maintain the fully open state of the door 2. This is a structure that stops one of the links (4).

Anyway, in the present invention, the link rotating body 12 is rotatably installed in the case 11, a semicircular groove portion 12a is formed on the circumferential surface of the link rotating body 12, and the link rotating body 12 ), an insertion hole 13 that is inserted or removed from the groove 12a is disposed on the outside of the circumferential surface of the link rotating body 12 within the case 11.

In addition, a roller may be installed at the front end of the insertion hole 13 that is inserted into and removed from the groove portion 12a of the link rotary body 12 to make it easier to insert and remove from the groove portion, and the insertion hole 13 is inserted into the groove portion 12a of the link rotating body. It is movably installed within the insertion hole installation portion 14a of the linear moving body 14, which will be described later, so that it can be moved to the center of (12).

The linear moving body 14 is not only provided with the insertion hole installation portion 14a, but also has a side expansion portion 14b formed on its side, and the side expansion portion 14b has a semicircular lever roller insertion groove portion 14c. ) is formed, and the linear moving body 14 is installed to be movable in the case 11 in a direction perpendicular to the moving direction of the insertion hole 13.

A compression spring 15 that elastically supports the insertion hole 13 toward the center of the link rotating body 12 is installed in the insertion opening installation portion 14a of the linear moving body 14, and the compression spring 15 An adjustment bolt 16 for adjusting the elastic force is fastened to the insertion hole installation portion 14a of the linear moving body 14.

In particular, a lever 17 having a lever roller at one end that is inserted and removed into the lever roller insertion groove 14c of the linear moving body 14 is installed to rotate within the case 11, and the lever 17 is initially installed. A lever return spring 18 that returns the lever to its original state is installed between the other end of the lever 17 and one side of the case 11.

A magnetic material 19 is fixedly installed on one side of the other end of the lever 17, and an electromagnet 20 that generates magnetic force by applied electricity is fixed to the case 11, so that the magnetic material 19 When is fixed by the magnetic force of the electromagnet 20, the lever roller of the lever 17 is inserted into the lever roller insertion groove 14c of the linear moving body 14, thereby interfering with the movement of the linear moving body 14. .

Of course, when electricity is applied to the electromagnet 20, the magnetic material 19 in close contact with the electromagnet 20 is firmly fixed by the magnetic force of the electromagnet 20, and when the electricity to the electromagnet 20 is cut off, the magnetic material 19 is The holding force is removed.

In addition, the pins, protrusions, and groove shapes required for linear movement or rotation of each of the above-mentioned components are well known in the prior art in this technical field, and are general techniques, so detailed description will be omitted.

Meanwhile, as shown in FIG. 4, the insertion hole 13, which moves together with the linear moving body 14 when the electricity is cut off, moves downward while being moved by the link rotating body 12, and also restricts the movement of the linear moving body 14, thereby rotating the link rotating body. When the entire body 12 is rotated to its initial state, the insertion hole 13 can be smoothly inserted into the groove 12a of the link rotating body 12, and can be smoothly returned to the state shown in FIG. 2.

In order to increase the smoothness of this return, in the present invention, as shown in FIGS. 6 and 7, one or two moving body return springs 21 that return the linear moving body 14 to the initial state are provided with the linear moving body ( 14) It includes a structure that elastically supports one or both sides.

In any case, in the present invention, in the above-described technology, the insertion force of inserting the tip of the insertion hole 13 into the groove 12a of the link rotation body 12 due to the elastic force of the compression spring 15 is applied to the door check (3). ) than the force causing the insertion hole 13 in the groove portion 12a of the link rotary body 12 to separate from the groove portion 12a due to the rotational force of the link rotating body 12, which is rotated through a link, etc. by the elastic force of the spring in the Make it large.

And when electricity is applied to the electromagnet, the adhesive force of the magnetic material 19 attached by the magnetic force of the electromagnet 20 is the link rotor 12, which is rotated through a link, etc. by the elastic force of the spring in the door check 3. The linear moving object 14, which is to be moved by the rotational force, must be firmly stopped with the lever 17.

The electromagnet type door open holding device connected to the door check according to the present invention, which is made in this way, continues to apply electricity to the electromagnet 20 when the door 2 is completely open as shown in FIGS. 1 and 2. By authorizing it, the door can be kept open.

In this state, when the user holds and closes the door, as shown in FIG. 3, the external force exerted by the user and the elastic force of the spring in the door check cause the force to rotate the link rotating body 12 through the link 4 to the compression spring 15. The compression spring is compressed by overcoming the elastic force.

Then, the tip of the insertion hole 13 in the groove 12a of the link rotating body 12 deviates from the groove 12a, and the link rotates as shown in the solid line in FIG. 3, and the elastic force of the spring in the door check 3 causes the link to rotate. As the door 2 continues to close, the link 4 rotates as shown in the chain line in FIG. 3.

On the other hand, when an external signal is applied or the electricity to the electromagnet 20 is cut off due to a power outage, etc., the magnetic force between the electromagnet 20 and the magnetic material 19 is removed as shown in FIGS. 4 and 5, thereby causing the door check. The insertion hole 13 and the linear moving body 14 move to the left in the drawing due to the rotational force of the link rotating body 12, which rotates through the link 4 by the elastic force of the spring inside.

At this time, the distal end of the lever 17 may deviate from the lever roller insertion groove 14c of the linear moving body 14, and at the same time, the distal end of the insertion hole 13 may deviate from the groove of the link rotating body 12, and the door may deviate from the groove of the link rotating body 12. It can be completely closed by checking.

In this way, the electromagnet type door opening maintenance device connected to the door check according to the present invention can not only smoothly maintain the open state of the door using the magnetic force of the electromagnet, but can also manually open the door without adversely affecting the electromagnet even when the door needs to be closed. Alternatively, the door can be closed automatically and the door can be kept open smoothly even if a small capacity electromagnet is used.

1: Door open maintenance device 2: Door
2a: Frame 3: Door check
11: Case 12: Link rotation body
12a: groove 13: insertion hole
14: straight moving body 14a: insertion hole installation part
14b: side extension 14c: lever roller insertion groove
15: compression spring 16: adjustment bolt
17: Lever 18: Lever return spring
19: magnetic material 20: electromagnet

Claims (2)

In the electromagnet type door opening maintenance device connected to the door check,
A link rotating body having a semicircular groove is rotatably installed within the case, and an insertion hole having a tip roller inserted into and detached from the groove of the link rotating body is an insertion hole of a linear moving body so that it can move to the center of the link rotating body. The linear moving body, which is movably installed in the installation portion and includes the insertion hole installation portion and has a side extension on a side, is movably installed in the case in a direction perpendicular to the direction of movement of the insertion hole, and has the insertion hole. A compression spring for elastic support is installed in the insertion installation portion of the linear movable body, an adjustment bolt for adjusting the elastic force of the compression spring is fastened to the insertion installation portion of the linear movable body, and a semicircular shape is formed on the side extension of the linear movable body. A lever roller insertion groove is formed, and a lever having a lever roller at one end that is inserted and removed into the lever roller insertion groove of the linear moving body is installed to rotate within the case, and a lever return spring returns the lever to its initial state. It is installed between the other end of the lever and one side of the case, and a magnetic material is fixedly installed on one side of the other end of the lever, and an electromagnet that generates magnetic force by applied electricity is fixed to the case. When the magnetic body is fixed by the magnetic force of the electromagnet, the lever roller of the lever is inserted into the lever roller insertion groove of the linear moving body to prevent the movement of the linear moving body. An electromagnet type door opening holding device connected to a door check. According to paragraph 1,
An electromagnet type door opening holding device connected to a door check, including one or two moving body return springs that return the linear moving body to its initial state and elastically supporting one or both sides of the linear moving body.