WO2024090763A1

WO2024090763A1 - Door lock for exit device

Info

Publication number: WO2024090763A1
Application number: PCT/KR2023/012703
Authority: WO
Inventors: 이승원
Original assignee: 이승원
Priority date: 2022-10-26
Filing date: 2023-08-28
Publication date: 2024-05-02
Also published as: KR20240058345A

Abstract

The present invention provides a door lock for an exit device, the exit device being characterized by comprising: a slider that is mounted to a door panel and pushed by pressure applied by a user, and is made to slidingly reciprocate along a device frame by a pushing part; a slide bar that has one side coupled to the slider; a door lock in which a deadbolt is coupled to the other side of the slide bar and locks and unlocks the door; and a braking piece which is mounted to one side of the door lock and restricts or allows the movement of the deadbolt.

Description

Door lock for exit device

The present invention relates to a door lock for an exit device, and more specifically, when the deadbolt constituting the door lock is pressed while the push bar that opens and closes the door is not operated, the retraction of the deadbolt is limited, the door does not open, and the push bar is pressed. It relates to a door lock for an exit device that includes a braking piece that allows the deadbolt to retract and the door to open only when the bar is operated.

In general, a door-lock device is a device that allows the latch installed on one side of the door to enter and exit the striker installed on the door frame. When the door is closed, the latch is inserted into the striker by elasticity and enters a locked state to limit rotation so that the door does not open on its own. Then, when the person entering turns the handle installed on the door, the square bar-shaped lever spindle connected to it rotates the latch, unlocking the door, and pushing the door forward opens the door.

The door lock device is a very simple door opening and closing structure, and there will be no problem in normal times, but since the user must turn the handle, it not only becomes an obstacle to quick escape in urgent emergency situations such as fire or earthquake when many people flock to the doorway at once, but it can also cause problems. If you do so, it may become a factor in causing a terrible fatal accident. Therefore, an exit device, an emergency escape device, is installed at the entrance door or emergency exit of the building.

The exit device has a push bar installed in the middle of the inside of the door, so simply pushing the push bar without using your hands unlocks the latch installed on the door, and the door opens by itself by pushing the push bar. It opens. Therefore, in the event of an emergency, it is possible to escape the disaster scene much more quickly and easily than with a conventional door lock device.

Exit devices are classified into rim type, mortise type, and vertical type. Among them, the mortise type includes a mortise lock unit that is embedded in one side of the door and rotates the latch, and a mortise type that rotates the latch. It has a structure in which push bar units installed horizontally inside are separated from each other.

With this prior art, a head assembly for a panic device in Registered Patent Publication No. 10-2028575 (2019.09.27.) was proposed, and the proposed head assembly constitutes a head assembly for a panic device applied to an escape door or fire door of an emergency staircase. In doing so, the series of configurations that implement the lock operating mechanism are simplified and a configuration that prevents unauthorized release of the latch bolt is installed to ensure safe and smooth operation. However, the push bar remains exposed to the front of the escape door or fire door. There was a problem that it looked clunky, and there was a problem that noise was generated during operation.

In addition, if a specific person located on the other side of the push bar presses the deadbolt of the door lock by any means and moves the deadbolt while the push bar is not operated, the lock state may be released arbitrarily and the door may be opened unintentionally. There were also problems. In this case, problems such as trespassing and theft may occur.

The present invention was made to solve the problems of the prior art described above. The purpose of the present invention is to provide a door lock for an exit device that restricts the movement of the deadbolt of the door lock when the push bar is not pressed.

In order to achieve the above-described object, the present invention provides a door lock for an exit device, wherein the exit device is installed on a door panel, is pushed by a user's pressure, and is provided to slide and move along the device frame by a pushing unit. slider; and a slide bar on one side of which is coupled to the slider. And a door lock in which a deadbolt is coupled to the other side of the slide bar to lock and unlock the door, and a braking piece installed on one side of the door lock to restrict or allow movement of the deadbolt. A door lock for the exit device is provided.

The braking piece is rotatably fixed around a rotating portion formed adjacent to the slide bar, and in an area adjacent to the rotating portion, contacts a protrusion formed on an end of the slide bar body in the deadbolt direction, It is preferable that the slide bar rotates up and down around the rotating portion as the slide bar advances and retreats, and if the slide bar does not advance or retreat, the end or part of the slide bar supports the deadbolt to limit the movement of the deadbolt.

It is preferable that the thickness of the braking piece increases in the direction of the rotating portion.

According to the present invention as described above, the movement of the deadbolt of the door lock is restricted when the push bar is not pressed, and the deadbolt is arbitrarily pressed from the opposite side of the push bar to move the deadbolt backward, thereby preventing the door from being opened without permission. It is expected that it will be effective in preventing problems such as opening and closing.

Figure 1 is a perspective view showing a door to which an exit device according to the present invention is applied.

Figure 2 is a perspective view showing an exit device according to the present invention.

Figure 3 is a perspective view showing the interior of the exit device according to the present invention.

Figure 4 is a perspective view showing the rear of the exit device according to the present invention.

Figure 5 is an enlarged perspective view showing the main part of the exit device according to the present invention.

Figure 6 is an enlarged perspective view showing the main part of the exit device according to the present invention.

Figure 7 is an enlarged bottom perspective view showing the main part of the exit device according to the present invention.

Figure 8 is an enlarged, separated perspective view of the main part of the exit device according to the present invention.

9 is a plan view showing the movement of the brake piece of the exit device according to an embodiment of the present invention;

Figure 10 is a plan view showing the movement of the brake piece of an exit device according to another embodiment of the present invention, along with a cross-sectional view of the slide bar body.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts unrelated to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

Additionally, terms such as “… unit” and “… unit” used in the specification refer to a unit that processes at least one function or operation.

The exit device according to the present invention has all parts except the pressing part embedded in the interior of the door to provide a simple appearance, and allows the door lock to be quickly released and operated slowly when released, thereby reducing vibration or impact noise. This was done to prevent it from happening.

Figure 1 is a perspective view showing a door to which an exit device according to the present invention is applied, Figure 2 is a perspective view showing the exit device according to the present invention, Figure 3 is a perspective view showing the interior of the exit device according to the present invention, Figure 4 is a perspective view showing the rear of the exit device according to the present invention, Figure 5 is an enlarged perspective view showing the main part of the exit device according to the present invention, and Figure 6 is an enlarged view showing the main part of the exit device according to the present invention. It is a perspective view, Figure 7 is an enlarged bottom perspective view showing the main part of the exit device according to the present invention, Figure 8 is an enlarged and separated perspective view showing the main part of the exit device according to the present invention, and Figure 9 is an embodiment of the present invention. It is a plan view showing the movement of the brake piece of an exit device according to an example, and FIG. 10 is a plan view showing the movement of the brake piece of an exit device according to another embodiment of the present invention, along with a cross-sectional view of the slide bar body.

As shown in FIGS. 1 to 10, the exit device according to the present invention includes a device frame 100, a damper unit 200, a pushing unit 300, a slider 400, and a slide bar 500. do.

Here, the device frame 100 is inserted into the door panel (P) so that the damper part 200, the pushing part 300, the slider 400, and the slide bar 500 can be stably supported. , "

"A frame member (110) with a shape, each on the inside of both ends."

"The frame reinforcement member 120 having a shape is fitted and coupled to prevent deformation.

The damper unit 200 is provided to be inserted into the device frame 100 to absorb and relieve impact force generated according to the operation of the pushing unit 300.

The damper unit 200 includes a damper plate 210, a reduction unit 220, a fixed buffer unit 230, and a movable buffer unit 240. The damper plate 210 has a rack gear ( 211) is provided with a long slide hole 212, and the reduction unit 220 has a pinion gear 221 engaged with the rack gear 211, and is provided to reduce the rotation of the pinion gear 221. there is. At this time, it is desirable for the pinion gear 221 to be decelerated using a spring type or hydraulic type. Accordingly, by adjusting the pressure or operation of the pushing part by the damper part 200, the door lock can be quickly released during operation and operated slowly when released.

The fixed buffer 230 is spaced apart from the damper plate 210 to prevent interference during the slide reciprocating movement of the damper plate 210.

"A cushioning member (CS) is provided at each corner of the shape and is fixed to the device frame 100.

The movable buffer 240 is in contact with the fixed buffer 230 of the buffer member CS, and is provided with corresponding buffer members CS on both sides of the damper plate 210, so that during the operation process. It is possible to prevent noise caused by the generated shock.

The pushing part 300 is provided on both sides of the damper part 200 so that it can be interlocked when the user presses the pushing bar (PB) provided at the end, and is attached to the device frame 100 with a pushing support piece ( 310) is fixed, and a pushing arm 320 is provided on the pushing support piece 310 to be rotatable about the first hinge axis 321.

In addition, the inclined arm is rotatably coupled to the second hinge shaft 331 in the middle of the pushing arm 320 and is connected to the third hinge shaft 332 provided at the end so that one side of the spring 340 is hung. (330) is provided, and the pushing piece 350 is coupled to the fourth hinge axis 351 at the end of the pushing arm 320, and the other side of the spring 340 is connected to the first hinge axis 321. It is equipped so that it can be hung on.

The slider 400 is provided to slide and reciprocate along the device frame 100 by the other side of the pushing unit 300, and can be interlocked with the slide bar 500.

For this purpose, the above "

A slider body 410 having a shape and a rod coupling piece 420 provided with upper and lower rod coupling holes 421 are provided at the end of the slider body 410 to be bent at a right angle toward the front. At this time, the upper and lower The rod coupling hole 421 is intended to be easily used even when the door lock is turned up and down during the installation process.

The slide bar 500 is unlocked by pushing or pulling the deadbolt (D) of the door lock (R). One side is coupled to the slider 400, and the other side is a door lock ( It is provided to be coupled to the deadbolt (D) of R).

The slide bar 500 has a locking groove 511, and the first slide shaft 520 is coupled to the slide bar body 510 to which the nut 512 is coupled, and the first slide shaft 520 ) so that the first spring (SP1) inserted into the

A handle rotation piece 530 having a shape is provided to be fitted.

In addition, a slide guide piece 560 provided to be coupled to the third slide shaft 550 through which the second slide shaft 540 is inserted is provided in contact with the handle rotation piece 530, and the third slide shaft While the second spring (SP2) is inserted into the outer periphery of the door (550), the second slide shaft (540) penetrating the third slide shaft (550) is the dead body of the door lock (R) where locking and unlocking of the door is performed. It is connected to the bolt (D).

The second slide shaft 540 is provided with a slide head 544 at the end of a second slide shaft body 541 having a predetermined diameter. The slide head 544 has a concavo-convex groove 542 on the outer periphery. It is provided repeatedly and is larger than the diameter of the second slide shaft body 541, and a pinhole 543 is provided through it in a direction perpendicular to the axial direction.

The slide head 544 is inserted into the deadbolt D and coupled by the fixing pin 545, thereby preventing separation and enabling smooth operation.

The third slide shaft 550 has a hollow shape and is provided with a spiral groove 551 on the outer periphery, so that separate lubricating oil can be injected while reducing frictional resistance during operation.

Meanwhile, as shown in FIGS. 6 and 9, a protrusion 513 is provided at the end of the slide bar 500 in the direction of the deadbolt (D). There is at least one protrusion 513, and the retraction of the deadbolt (D) A braking piece 570 is provided to prevent the door from opening by contacting the push bar (PB) direction surface (rear portion) of the deadbolt (D) and restricting the movement of the deadbolt (D).

The braking piece 570 is rotatably fixed around a rotating portion 571 formed on one side of the door lock (R). Normally, when the deadbolt (D) moves, the end of the braking piece (570) is positioned horizontally so as to contact the deadbolt (D), and when the push bar (PB) is pressed, it is centered around the rotating portion (571). It is configured to rotate counterclockwise to allow free movement of the deadbolt (D).

When the slide bar 500 moves forward and backward according to the pressure of the push bar (PB), the brake piece 570 moves in the direction of the rotating portion 571 of the brake piece 570 (push bar direction). The braking piece 570 acts to move counterclockwise.

To achieve this, the surface in contact with the protrusion 513 of the braking piece 570 has a stepped structure. That is, the thickness of the brake piece 570 gradually becomes thicker from the deadbolt (D) direction to the push bar (PB) direction, preferably in stages, and the protrusion 513 moves around the displacement point where the thickness changes. While doing so, it acts to enable the rotation of the braking piece 570.

In this case, when trying to open the door by artificially pressing only the deadbolt (D) without operating the push bar (PB), the braking piece 570 does not rotate counterclockwise, preventing the movement of the deadbolt (D). It acts to restrict it, and thus has the effect of preventing the door from being opened without operating the push bar (PB).

The movement of the braking piece in FIG. 10 is the same as that in FIG. 9. However, if the first spring (SP1) in FIG. 9 is located outside the slide bar body 510, in FIG. 10 the first spring (SP1-1) is located outside the slide bar body (510). The difference is that it is located inside the 510). This case describes the case of pressing the deadbolt (D) without operating the push bar (PB). The first slide shaft 520 inserted into the slide bar body 510 has a distal end diameter that is larger than the diameter of the inlet portion of the first slide shaft 520 of the slide bar body 510, so the first slide shaft 520 It does not fall out of the slide bar body 510, and thus the first slide axis 520 moves left and right inside the slide bar body 510. At this time, the distal end of the first slide shaft 520 functions as a stopper and the first spring SP1-1 functions to apply elastic force without deviating from the first slide shaft 520. When the deadbolt (D) is pressed inward, the second elastic spring (SP2) is compressed, and the first slide axis 520 is tensioned by the first spring (SP1-1) inside the slide bar body 510. move in the direction The reason why the first slide axis 520 is movable is because a space 514 is formed inside the slide bar body 510. Due to this space 514, the first spring (SP1-1) can freely flow inside the slide bar body 510. When the force applied to the deadbolt (D) is relieved, the first spring (SP1-1) returns to its original state and the first slide axis 520 moves toward the original position of the deadbolt (D).

This means that the inside of the slide bar body 510 is formed in a hollow shape so that when the deadbolt (D) is pressed to change the direction of the deadbolt (D) back and forth on the door, the first slide axis (520) is inside the slide bar body. By allowing it to flow freely, the deadbolt (D) can retract and advance without pressure from the push bar, thereby making it easy to change the direction of the deadbolt (D) forward and backward on the door. As shown, the deadbolt (D) has one side curved and one side is flat. When the door is closed, the curved side of the deadbolt (D) is pressed and allows it to move forward and back. This curved surface may face the front or the back of the door as needed, and it must be freely switchable. For this, the deadbolt (D) must be configured to freely move forward and backward within the door lock. In order to make this possible, the present invention implements the inside of the slide bar body 510 to be hollow, and the first slide axis 520 can freely move back and forth through this.

It should be noted that the above-described embodiments are for illustrative purposes only and are not intended for limitation. Additionally, an expert in the technical field of the present invention will understand that various embodiments are possible within the scope of the technical idea of the present invention.

Claims

In the door lock for the exit device,

The exit device includes a slider installed on the door panel, pushed by a user's pressure, and provided to slide and move along the device frame by the pushing unit; and a slide bar on one side of which is coupled to the slider. And a door lock in which a deadbolt is coupled to the other side of the slide bar to lock and unlock the door,

A braking piece installed on one side of the door lock to restrict or allow movement of the deadbolt;

A door lock for an exit device, characterized in that it includes.
According to paragraph 1,

The braking piece is,

It is rotatably fixed around a rotating part formed adjacent to the slide bar,

In the area adjacent to the rotating portion, the slide bar contacts a protrusion formed at the end of the slide bar body in the deadbolt direction, and rotates up and down around the rotating portion as the slide bar advances and retreats, and the slide bar does not advance or retreat. A door lock for an exit device, characterized in that its end or part supports the deadbolt and limits the movement of the deadbolt.
According to claim 1 or 2,

An exit device, characterized in that the thickness of the braking piece increases in the direction of the rotating portion.