Patent Application
20240384569
The present disclosure relates to a push-pull door lock, and more specifically, to a push-pull door lock having an anti-panic function that automatically releases the lock when an indoor side handle of a door lock is operated even in a state in which the door lock is locked.
In general, a door lock is a locking means mounted on a door to open and close the door, and digital door locks operated by mortises and keypads and handle-type door locks operated by a retaining jaw unit (locking device) and a handle unit have been widely used.
Especially, recently, in addition to the digital door locks or the handle-type door locks, push-pull door locks that lock and unlock doors by pushing or pulling push-pull handles provided on the indoor and outdoor sides of the doors have been widely used.
Although various forms of such push-pull door locks have been proposed, the push-pull door lock mainly includes handles installed on the inside and outside of the door, and a door locking device embedded in the door to lock and unlock the door. By pushing or pulling the handle according to the opening and closing direction of the door, the locking state of the door locking device is released, thereby opening the door.
Such conventional push-pull door locks have been proposed as “push/pull bidirectional push-pull door lock” in Korean Patent No. 10-2141548.
Such a conventional push-pull door lock is configured to open the door by pulling or pushing and rotating a handle body in the back-and-forth direction (vertical direction) at support parts, which are respectively installed on the inside and outside of the door. Each support includes the handle body installed to be pulled or pushed, and a structure capable of opening the door by releasing the locking state of the door locking device.
Since the operating direction of the handle body is different depending on the direction of opening the door, the operating structure of the door locking device by each handle body must also be differently provided on the indoor and outdoor sides.
In other words, in a case that the door is in a form that rotates outward to be opened, the locking device should be configured to release the locking device when the outdoor side handle body is rotated and pulled outward from the support part and the indoor side handle body is rotated and pushed from the support part. Then, the direction of opening the door matches the direction of rotation of the handle body, thereby making the use of the push-pull door lock convenient.
Furthermore, in such a push-pull door lock, when the door locking device is locked when a user rotates a key assembly outdoors or rotates a key knob indoors, the operation of the indoor and outdoor handles is locked.
However, in conventional push-pull door lock, when the door locking device is locked, it is necessary to rotate the key knob in the opposite direction indoors to release the lock. In emergencies such as fire, since it is difficult for people inside to quickly find the key knob of the push-pull door lock, the people may be in a panic state where accidents cannot be avoided. cl PATENT LITERATURE
Korean Patent No. 10-2141548
Accordingly, the present inventive concept has been made in view of the above-mentioned problems occurring in the related art, and it is an object of the present inventive concept to provide a push-pull door lock having an anti-panic function which automatically releases a locked state when a user operates an indoor side handle indoors even in a state in which a door locking device is locked.
To accomplish the above-mentioned objects, according to the present inventive concept, there is provided a push-pull door lock having an anti-panic function including: a door locking device which is provided inside a door to open and close the door; a handle device which includes bodies fixedly provided on the indoor side and the outdoor side of the door, and handles which are respectively provided on the bodies to be pushed or pulled; and a locking means which is provided in each of the bodies of the handle device and locks the operation of the handle to lock the door, wherein the locking means comprises: a key knob assembly which is rotatably provided in the indoor side body; a key assembly which is rotatably provided in the outdoor side body and is connected to the key knob assembly to be rotated along with the key knob assembly; and a stopper which is connected to the key assembly, is rotated along with the key assembly, and locks the operation of the handle, wherein the locking means includes guide plates which are respectively provided on the indoor side and outdoor side bodies and are moved up and down on the bodies by push and pull operations of the indoor side and outdoor side handles, wherein the outdoor side guide plate has a through-hole through which the stopper passes to be rotatable and to which the stopper is coupled after being rotated so as to stop the moving-up/down operation of the guide plate during locking of the locking means, and wherein the key knob assembly passes through the indoor side guide plate to be rotatable, and is rotated when the guide plates are moved up and down.
Moreover, the stopper is rectangular in shape, and has curved parts formed on both sides in the longitudinal direction and having the same circumferential surface as the arc formed during rotation of the stopper, and the through hole of the outdoor guide plate has a retaining jaw which is formed to expand in one direction arc formed on the inner circumferential surface thereof to correspond to the curved part, such that the curved part of the stopper are in surface contact and engaged with the retaining jaw of the outdoor side guide plate when the locking means is locked.
Furthermore, a retaining jaw or a stepped portion is formed in the through hole of the indoor guide plate to rotate the key knob assembly when the indoor side guide plate is raised, and a rotation protrusion which is retained and engaged with the retaining jaw or the stepped portion is formed on the key knob assembly penetrating the through hole.
Additionally, the indoor handle device includes a coupling bushing coupled to the key knob assembly, and a retaining protrusion limiting the rotation of the key knob assembly to 90 degrees is formed on the coupling bushing.
In addition, rotation plates are provided on the body to be rotatable, respectively connected to the guide plate and the door locking device to operate the door locking device while rotating when the guide plate rises, and a return spring for returning the rotated rotation plate to the original position is provided on the rotation plate.
Moreover, a stop protrusion limiting the rotation of the rotation plate is formed on the rotation plate, and a select pin, which engages with the stop protrusion, is provided on the cover.
Additionally, a protrusion block protruding towards the guide plate is provided on the rotation plate, and a coupling protrusion, which is coupled to the protruding block, is provided on the guide plate corresponding to the protrusion block, such that the raising and lowering operation of the guide plate is converted into the rotation operation of the rotation plate.
According to an embodiment of the present inventive concept, the push-pull door lock having the anti-panic function, even in the state in which the door locking device of the push-pull door lock is locked, when the user operates the indoor side handle indoors, the locked state of the door locking device is automatically released, so the indoor and outdoor side handles are also released from the locked state to be operated normally. Therefore, the push-pull door lock having the anti-panic function according to an embodiment of the present inventive concept allows people to escape rapidly by swiftly opening the door in emergencies.
Hereinafter, preferred embodiments of the present inventive concept will be described in detail with reference to the accompanying drawings.
The terms used in the present inventive concept are defined considering the functions of the present inventive concept. The terms may vary depending on the intention or convention of the user or operator, so the definitions of the terms should be interpreted in accordance with the meanings and concepts consistent with the technical aspects of the present inventive concept.
In addition, the embodiments of the present inventive concept are merely exemplary of the components listed in the claims of the present inventive concept and do not limit the scope of the claims of the present inventive concept. In addition, the embodiments include interchangeable components as equivalent elements in the components listed in the claims throughout the specification.
Furthermore, optional terms in the following embodiments are used to distinguish one component from another component, and the components are not limited by the above terms.
Accordingly, detailed descriptions of relevant prior art that may unnecessarily obscure the essence of the present inventive concept are omitted.
As illustrated in
Specifically, the push-pull door lock 100 as described above is configured to open the door D by pushing or pulling each of the handle devices 200 and 200′ provided on the indoor and outdoor sides of the door D according to the opening direction of the door, thereby releasing the locking state of the door locking device 300.
As illustrated in
The outdoor side handle and the indoor side handle, respectively, have spindles 240 which are provided on sides facing each other and are respectively coupled to both ends of a rotary shaft protruding to both sides of the locking device 300 respectively not to be rotatable, such that the outdoor side handle and the indoor side handle interlock each other through the rotary shaft of the door locking device 300.
Furthermore, the outdoor side handle and the indoor side handle have internal configurations which are symmetrical to each other. The outdoor side handle includes a key assembly 290 and a stopper 293, and the indoor side handle includes a key knob 280 and a coupling bushing 250 operated in conjunction with the key assembly 290.
Therefore, hereinafter, in the following description of the outdoor side handle and the indoor side handle, the handles are collectively called handles 210, and are distinguished between the outdoor side handle and the indoor side handle only regarding the differences between the two handles 210.
Moreover, as illustrated in
Lower ends of the handles 210 are hinge-coupled to the body 220, and when a user pushes or pulls upper ends of the handles 210, the handles 210 can rotate around a hinge part of the lower end.
Moreover, as illustrated in
Furthermore, a rotation link 230 in the shape of “L” is inserted into the hinge pin 231, wherein the handle 210 is coupled and fixed to the upper end of the rotation link 230 and a guide plate 260 which is provided inside the body 220 is coupled to the side end of the opposite side.
Thus, when the user pushes or pulls and rotates the handle 210 towards the body 220, the rotation link 230 rotates together with the rotated handle 210 to lift the guide plate 260 positioned within the body 220.
Additionally, as illustrated in
The guide plate 260, as illustrated in
In this instance, the through hole includes an upper through hole 261 formed on the upper portion of the guide plate 260 and a lower through hole 262 formed on the lower portion of the guide plate 260. The upper through hole 261 and lower through hole 262 are mutually aligned, but the lower through hole 262 is designed to have a larger inner diameter than the upper through hole 261.
This is to provide space for the rotation of a knob shaft 242 of an indoor side handle device 200 and a stopper 292 of an outdoor side handle device 200′, which will be described later, to be rotatably provided within the lower through hole 262 and the upper through hole 261, respectively.
Additionally, the guide plate 260 has a coupling protrusion 263, which protrudes on the surface facing the rotation plate 270 to engage with a protrusion block 272 of a rotation plate 270, and enables the lifting operation of the guide plate 260 and the rotational operation of the rotation plate 270 to be interlocked.
Meanwhile, on the lower through hole 262 of the guide plate 260 as described above, there is provided a retaining jaw 264 and a stepped portion 265 for rotating a key knob assembly 240, which will be described later, when the guide plate 260 operates to lift. The retaining jaw 264 and the stepped portion 265 are provided on opposite sides facing each other within the lower through hole 262.
The retaining jaw 264 protrudes inward from the lower portion of the lower through hole 262, and the stepped portion 265 is provided on the opposite side of the lower through hole 262 above the retaining jaw 264, specifically above a rotation protrusion 243 of the key knob assembly 240.
Therefore, as illustrated in the enlarged views in
In this instance, only one of the retaining jaw 264 and the stepped portion 265 may be configured, but both are provided on the single guide plate 260 to universalize the guide plate 260, thereby enabling the rotation of the key knob assembly 240 regardless of the push-pull operation direction of the indoor side handle 210.
In other words, in a case that the indoor side handle 210 operates as a push type, the guide plate 260 descends to cause the stepped portion 265 to rotate the key knob assembly 240 clockwise, and in a case that the indoor side handle 210 operates as a pull type, the guide plate 260 rises to cause the retaining jaw 264 to rotate the key knob assembly 240 clockwise.
Furthermore, laterally expanded retaining jaws 266 are formed in the lower through hole 262 of the guide plate 260 provided in the outdoor side handle device 200′, and both sides of the retaining jaws 266 are rounded in an arc shape to correspond to the curved parts 292a of the stopper 292, which will be described later.
When the curved parts 292a of the stopper 292 are coupled to the retaining jaws 266 as illustrated in
That is, even when the push-pull door lock 100 is locked, the indoor side handle 210 is configured to operate to provide an anti-panic function that allows a person inside to easily open the door D in emergencies and evacuate quickly. Detailed description regarding the anti-panic function will be provided in the description of the locking means, which will described later.
Meanwhile, a cover 280 in the form of a plate for finishing the body 220 is provided on the body 220, and a rotation plate 270 is rotatably provided on one side of the cover 280, facing the interior of the body 220.
The rotation plate 270 has a spindle 271 formed in its center, and a square-shaped insertion groove 271a that penetrates the cover 280, and is engaged with and matched to the rotation axis of the door lock 300 to prevent relative rotation is formed at the end of the spindle 271.
Moreover, on one side of the rotation plate 270, protrusion blocks 272 are formed. Each of the protrusion blocks 272 has a pair of protrusion plates spaced apart vertically. As a result, when the coupling protrusions 263 of the guide plate 260 are inserted and coupled between the upper and lower protrusion blocks 272, the lifting operation of the guide plate 260 is converted into the rotational operation of the rotation plate 270.
Furthermore, at the top of the rotation plate 270, stop protrusions 273 protruding to restrict the rotation of the rotation plate 270 are formed. The stop protrusions 273 are formed at regular intervals from the top of the rotation plate 270, thereby ensuring that the rotation plate 270 is always properly positioned when it returns to its original position.
Meanwhile, a select pin 281 is provided on the cover 280 to engage with the stop protrusions 273 of the rotation plate 270. Depending on whether the select pin 281 is provided on the left or right side of the cover 280, the push-pull direction of the handle 210 can be switched.
In other words, as illustrated in
Furthermore, between the rotation plate 270 and the cover 280, a return spring 274 is provided to compress and then return the rotated rotation plate 270 to its original position. The return spring 274 is a torsion spring, with one end fixed to the cover 280 and the other end fixed to the rotation plate 270.
Meanwhile, the locking means is configured to forcibly stop the lifting operation of the guide plate 260 of the handle devices 200 and 200′ described above, thereby locking the operation of the push-pull door lock 100.
In other words, as illustrated in
The key knob assembly 240 includes a knob 241 rotatably provided on the indoor side body 220, a knob shaft 242 protruding inwardly from the key knob 241 into the body 220, and the rotation protrusion 243 protruding from both sides of the key knob shaft 242.
When the key knob 241 is rotated on the indoor side body 220, the present inventive concept can lock the operation of the push-pull door lock 100 from the inside.
Additionally, the key knob shaft 242 at the front end of the key knob 241 protrudes inward into the body 220, and is sequentially provided through a coupling bushing 250 and a lower through hole 262 of the guide plate 260, and an insertion groove 242a is formed on the front surface thereof so that the locking shaft 291 of the key assembly 290, which will be described later, is inserted and coupled into the insertion groove. The insertion groove 242a is rectangular in shape and is engaged with the locking shaft 291 to rotate together.
Moreover, the rotation protrusions 243 are symmetrically formed on both sides of the key knob shaft 242, wherein the rotation protrusion 243 of one side is located on the upper side of the retaining jaw 264 of the guide plate 260 and the rotation protrusion 243 of the other side is located on the lower side of the stepped portion 265 of the guide plate 260.
Therefore, in the state in which the rotation protrusions 243 of the key knob shaft 242 are positioned on both sides, since the rotation protrusions 243 are respectively in contact with the retaining jaw 264 and the stepped portion 265 of the guide plate 260, when the guide plate 260 rises, the key knob 241 and the key knob shaft 242 rotate unidirectionally, and the rotation protrusions 243 of the rotated knob shaft 242 are positioned vertically. In this state, the locking of the locking means, namely the key knob assembly 240, is released, and the guide plate 260 operates independently of the key knob assembly 240.
Furthermore, between the indoor side body 220 and the guide plate 260, a coupling bushing 250 through which the key knob shaft 242 penetrates is provided, and a retaining protrusion 251 is provided at the front of the coupling bushing 250 to limit the rotation of the key knob shaft 242 to 90 degrees.
The retaining protrusion 251 is formed in a rounded shape protruding into one quadrant area when the front of the coupling bushing 250 is divided into quadrants. In this exemplary embodiment, as illustrated in
Therefore, in the state in which the rotation protrusions 243 of the key knob shaft 242 are positioned horizontally, the rotation protrusion 243 of one side is engaged with the lateral retaining jaw 251b of the coupling bushing 250, and in the state in which the rotation protrusions 243 of the key knob shaft 242 are positioned vertically after rotation, the rotation protrusion 243 of the other side is engaged with the lower retaining jaw 251a of the coupling bushing 250, thereby ensuring that the key knob shaft 242 and the key knob 241 of the key knob assembly 240 always rotate only 90 degrees.
Meanwhile, the key assembly 290 is rotatably provided on the outdoor side body 220. When the user puts the key in the key assembly 290 and rotates the key assembly 290 outdoors, the present inventive concept can lock the operation of the push-pull door lock 100 outdoors.
The key assembly 290 is provided rotatably on the outdoor side body 220, as illustrated in
In addition, the stopper 292 is coupled to the locking shaft 291 in a manner that prevents relative rotation, and the stopper 292 is coupled in a state penetrating the lower through hole 262 of the guide plate 260.
The stopper 292 is longitudinally rectangular, and both ends in the longitudinal direction are formed as rounded protrusions 292a having the same circumferential surface as the arc formed when the stopper 292 rotates. In the middle portion of the stopper 292, a square-shaped coupling hole corresponding to the locking shaft 291 of the key assembly 290 is formed to be coupled in shape, such that the stopper 292 is also rotated integrally when the locking shaft 291 rotates.
Therefore, when the stopper 292 rotates, the rounded protrusions 292a formed at the long end parts of the stopper 292 rotate 90 degrees, so as to be in intimate contact with the corresponding shape of the retaining jaw 266 of the guide plate 260, thereby allowing smooth rotation of the stopper 292 without interference due to the shape of the rounded protrusions 292a and the retaining jaw 266. Moreover, since the lifting operation of the guide plate 260 is blocked by the intimate contact of the rounded protrusions 292a and the retaining jaw 266, the operation of the push-pull door lock 100 can be locked.
Meanwhile, since the outdoor side guide plate 260 constrained by the stopper 292 as described above cannot be lifted and lowered, the outdoor side handle 210 is locked, so the user cannot open the door D outdoors. However, the rotation protrusions 243 of the key knob assembly 240, which are rotated together with the stopper 292, are positioned at right and left sides to be in contact with the retaining jaw 264 and the stepped portion 265 of the guide plate 260. In this state, when the indoor side handle 210 is operated, the indoor side guide plate 260 is lifted to rotate the key knob shaft 242 of the key knob assembly 240 without manipulating the key knob 241 indoors. With just the operation of the indoor handle 210, the lock of the push-pull door lock 100 is released to open the door D, thus providing an anti-panic function.
Furthermore, the outdoor handle device 200′ includes a stop plate 293 that restricts the rotation of the stopper 292 to 90 degrees between the guide plate 260 and the rotation plate 270. The stop plate 293 has a through hole 293a formed for the stopper 292 to rotate through, and the inner surface of the through hole 293a is provided with a retaining jaw with which the stopper 292 is in contact to be coupled.
The retaining jaw includes an upper retaining jaw 293b formed at the upper portion of the inner surface of the through hole 293a and a side retaining jaw 293c formed at the side to limit the rotation of the stopper 292 to 90 degrees.
The stop plate 293 is fixedly coupled to the outdoor side body 220, and a cover plate 294 covering the stopper 292 is fixedly coupled to the outer surface of the stop plate 293.
The operational relationship of the push-pull door lock according to the present inventive concept will be described as follows.
First,
When the indoor side handle 210 is pulled to open the door D, as illustrated in
As a result, the rotation protrusions 243 of the key knob assembly 240, which were coupled with the retaining jaw 264 of the guide plate 260, rotate clockwise as the guide plate 260 rises, and the rotation protrusions 243 of the rotated knob assembly 240 move up and down, thereby releasing the lock of the locking means.
In addition, as the guide plate 260 rises, the rotation plate 270 rotates counterclockwise relative to the front view of
The opening operation of the door D described above is also performed by the outdoor side handle device 200′ in the same manner as the indoor side handle device 200, so repeated descriptions thereof will be omitted.
Meanwhile, when the key knob 241 of the key knob assembly 240 is rotated indoors or a key is coupled and rotated to the key assembly 290 outdoors, the locking shaft 291 is rotated by the rotation of the key knob 241 or the key assembly 290. Consequently, as the locking shaft 291 rotates, the coupled stopper 292 also rotates as illustrated in
That is, the curved parts 292a, formed on both ends of the long part, of the rotated stopper 292 are located on both right and left sides within the lower through hole 262 of the outdoor side guide plate 260, thereby engaging the stopper 292 in the retaining jaw 266 in a surface contact state.
Thus, since the stopper 292 is engaged to the retaining groove 266 of the outdoor side guide plate 260, the outdoor side guide plate 260 becomes locked, and consequently, the outdoor side handle 210 remains in a locked state.
However, even in this state, the indoor handle device 200 operates normally. When the stopper 292 is coupled to the retaining groove 266 of the outdoor side guide plate 260, the rotation protrusions 243 of the key knob assembly 240 rotated together with the stopper 292 are located at the right and left sides to be in contact with the retaining jaw 264 and the stepped portion 265 of the guide plate 260. However, in this state, when the user pulls the indoor side handle 260 to operate, the indoor side guide plate 260 rises and the rotation protrusion 243 contacting the indoor side guide plate 260 is rotated, so the key knob assembly 240 is rotated by 90 degrees and the coupled locking shaft 291 is also rotated by 90 degrees to rotate the coupled stopper 292 by 90 degrees.
As a result, the stopper 292 rotated by 90 degrees moves up and down within the lower through hole 262 as its curved parts 292a disengages from the retaining jaw 266 of the outdoor side guide plate 260, thereby releasing the lock of the door lock device 300 and enabling both indoor and outdoor side handle devices 200 and 200′ to operate normally.
Thus, in the present inventive concept, the locking state of the door lock device 300 can be released by simply operating the indoor handle 210 without manipulating the key knob 241 of the indoor side handle device 200, thereby allowing for swift evacuation by opening the door D in emergencies.
Although the present inventive concept has been described in detail with reference to specific embodiments, it is to be understood that the inventive concept is not limited thereto. Those skilled in the art will recognize that various modifications and improvements can be made within the scope of the present inventive concept, as defined by the appended claims.
Simple modifications or changes to the present inventive concept all fall within the scope of the inventive concept, and the specific protection scope of the present inventive concept will be clarified by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2021-0122646 | Sep 2021 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2021/018603 | 12/9/2021 | WO |
