KR101881042B1 - Dead latch - Google Patents

Abstract

The present invention relates to a door latch device capable of opening a locked state of a door by a key. According to the present invention, the door latch device comprises: a box-shaped housing having at least one outlet formed on one surface facing a frame having a strike installed therein, having a cylinder coupling groove formed on the other surface, and installed in the door; a cylinder having a key groove formed on an exposed surface, having a rotary lever formed on an opposite surface, and detachably coupled to the housing the cylinder coupling groove; a latch part installed in the housing to be able to be slid by being engaged with the rotary lever, elastically drawn in and out through the outlet to allow the latch to be received in or separated from the strike so as to maintain an openable state or a locked state of the door; a sub latch part installed in the housing parallel with the latch part and restricting movement of the latch in at least the locked state of the door so as to maintain the locked state of the door; and a release rod engaged with the rotary lever to move the sub latch part, which restricts the movement of the latch, so as to release restriction of the latch. As such, the sub latch part to restrict the movement of the latch in a closed state of the door is additionally installed to enhance security as a locking device, thereby providing effects of preventing the door from being opened by damage of the latch at least even if a strong external pressure occurs and locking the door simultaneously with action to close the door without a key.

Description

Door Lock Device {Dead latch}

The present invention relates to a door locking device, and more particularly, to a door locking device which includes a latch for maintaining a locked state of a door and an auxiliary latch for restricting movement of the latch in a closed state of the door, To a door lock device capable of preventing a door from being opened due to at least latch damage even if a strong external pressure is generated.

Generally, the door locking device is a device for restricting access to dangerous goods or valuables inside the door by restricting the door's locked state by restricting entrance and exit between the inside and the outside of the door.

Such a door locking device has been registered as, for example, Korean Utility Model Registration Utility Model No. 20-0151583 entitled "Actuation Device of Door Latch" (hereinafter referred to as "Prior Art").

The prior art is a latch unit 1 which is inserted into a door 100 provided between a cylinder protecting cap 40 and a passive hanging handle 80 so that two plates And a through hole 20 into which the operating piece 30 is inserted at the center is inserted and formed so that the through hole 41 is formed at one side of the moving piece 21, And the leaf spring 60 is fixed to the lower end of one side of the plate 10 or 10 ' 20, 22 ', 22') of the upper and lower legs (20, 20). Thus, it is possible to easily open and lock the key when the key is rotated.

Although this prior art is simple in structure, it is easy to be damaged by external pressure, and the handle (80) or the key (70) must be used for locking. Therefore, the lock is released due to the carelessness of the manager, and the lock function can be lost, thereby causing damage such as theft or breakage.

That is, when a strong physical pressure is applied between the hooks of the prior art, there is a possibility that breakage may occur in the mover or the groove which is connected to and supports the hook, which is a problem caused by the simplification of the structure.

Accordingly, the locking device is required to have a function as its own function, and in particular, a locking device capable of maintaining a closed state even under a strong external pressure is required, and furthermore, a door locking device capable of providing the convenience of locking and unlocking of the door Development is urgent.

Korean Intellectual Property Office Registered Utility Model No. 20-0151583

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-described problems of the prior art, and it is an object of the present invention to provide a door locking device and a door locking device, The present invention provides a door locking device capable of preventing a door from opening due to at least latch damage even if a strong external pressure is generated by enhancing security as a locking device.

Another object of the present invention is to solve the restriction elements of the auxiliary latch which restricts the movement of the latch only by the rotation of the key, and it is possible to sequentially carry out the opening of the door until the door is kept in a stable closed state, And a door locking device that can simultaneously satisfy the convenience of the door locking device.

In order to achieve the above-mentioned object, the present invention provides a door structure, comprising: a housing having a housing structure in which at least one outflow opening is provided on a face facing a frame provided with a strike, and a cylinder coupling groove is formed on the other face; A cylinder having a key groove formed on an exposed surface thereof, a rotating lever provided on an opposite surface thereof, and detachably coupled to the housing through the cylinder coupling groove; And the latch can be slidably received in the housing by being engaged with the rotary lever, and the latch can be retracted or retracted through the retractor by the elasticity so that the latch is received in or released from the striker, A latch portion for maintaining the state; An auxiliary latch portion disposed in parallel with the latch portion in the housing to maintain the closed state of the door by restricting movement of the latch at least in a closed state of the door; And a release rod releasing the restriction of the latch by moving an auxiliary latch unit that restricts movement of the latch to engage with the rotation lever.

The housing includes a first pull-out port of the pull-out port, a pulling column mounting groove on which a pulling column is provided for the elastic pulling of the latching portion, and a pulling rod mounting groove for pulling the latching portion, Installation part; An auxiliary latch mounting portion that is provided in parallel with the first outflow port of the outflow port and has a second outflow port that allows the auxiliary latch to be drawn out or drawn into the housing and has at least one auxiliary latch fixing groove; A fixing device mounting portion in which a fixing device for restricting the rotation of the cylinder is installed; And a release rod mounting groove on which the release rod is installed.

Wherein the latch portion comprises: a pulling panel having a latching protrusion formed on one surface of the latching portion, the latching portion being opposed to the latching portion; A connecting bracket installed between the tow panel and the latch; And a pull rod rotatably installed between the opposite ends of the pull rod mounting groove, the pull rod having one end engaged with the pulling panel and the other end engaged with the pivoting lever.

Wherein the pull rod is provided between both ends thereof and has a pull rod rotating shaft for allowing the pull rod to be rotatably coupled to the pull rod mounting groove; A traction piece provided at one end to engage with the traction panel; And a rotating piece provided at the other end and engaged with the rotating lever.

The auxiliary latch includes a bar-shaped guide rod having one end coupled to the auxiliary latch, sliding along the auxiliary latch in the longitudinal direction, and supporting the auxiliary latch to be drawn into or out of the housing, A guide bracket disposed parallel to the guide rod and including a guide ring whose end portion is bent at a predetermined angle; A fixing bracket fixed to the first auxiliary latch fixing groove of the auxiliary latch fixing groove and serving to support the guide bracket when the guide bracket is moved; A slider installed parallel to the fixing bracket through a second auxiliary latch fixing groove of the auxiliary latch fixing groove and slidably installed to elastically support the latching jaw; And an auxiliary latch elastic body installed between the guide rod and the fixing bracket to induce elastic withdrawal of the auxiliary latch. The slider is supported at a bent end of the guide ring, desirable.

The fixing bracket includes a fixing bracket body, which is a six-sided block body and has a fixing bracket coupling protrusion protruded on at least one surface thereof and is coupled to the first auxiliary latch fixing groove; A guide hole for supporting the slide movement of the guide bracket by penetrating the guide rod; And a fixed wall provided on the other surface to elastically support the slider.

The slider includes a slider body having a slider coupling protrusion protruding from at least one surface thereof and being slidably coupled through the second auxiliary latch fixing groove, A slider slope part which is present in the shape of a negative angle between both ends of one surface of the slider body which is in contact with the guide ring and in which the slider in a pulled-out state is brought into contact with the guide ring; And a slider releasing protrusion formed to protrude from one end of the same surface as the slider slope and to force the slider to be pulled in a pulled-out state by the urging of the release rod, wherein the slider includes a slider elastic body It is preferable that the drawn state is maintained by the coil-shaped slider elastic body accommodated in the accommodating portion.

The release rod includes a release rod fastening hole provided between both ends; A pressing piece portion provided at one end and pressing the slider releasing projection by rotating about the releasing rod fastening hole; And a pushing piece portion which is provided at the other end and rotates about the release rod fastening hole in a state in which it is in contact with the rotary piece so that the pushing piece portion presses the slider releasing projection, And is rotatably coupled to the release rod mounting groove by a release rod rotary shaft coupled to the release rod installation groove.

According to the present invention as described above, there is further provided a latch for maintaining the locked state of the door and an auxiliary latch for restricting the movement of the latch in the closed state of the door, It is possible to prevent the door from being opened due to the latch damage.

Further, the present invention not only eliminates the restriction elements of the auxiliary latch that restricts the movement of the latch by rotation of the key but also can be performed sequentially until the door is opened, so that the stable state of the door can be maintained, It is possible to expect the effect of satisfying convenience at the same time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a locking device for explaining a locking device according to a preferred embodiment of the present invention;
FIG. 2 is an installation state diagram of a locking device for explaining a locking device according to a preferred embodiment of the present invention; FIG.
3 is a side view of a housing for explaining a housing according to a preferred embodiment of the present invention;
FIG. 4 is a perspective view of a latch shown for explaining a latch according to a preferred embodiment of the present invention, FIG.
5 and 6 are side views of a locking device for explaining an operating state of a latch portion according to a preferred embodiment of the present invention,
FIG. 7 is a perspective view of an auxiliary latch unit for explaining an auxiliary latch unit according to a preferred embodiment of the present invention;
FIG. 8 is a cross-sectional view of an auxiliary latch portion for explaining an auxiliary latch portion according to a preferred embodiment of the present invention;
9 and 10 are side views of a locking device for explaining the operation of the slider according to a preferred embodiment of the present invention,
11 is a perspective view of a release rod shown for explaining a release rod according to a preferred embodiment of the present invention,
12 and 13 are side views of a locking device for explaining an operating state of a release rod according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the present invention, the defined terms are defined in consideration of the function of the present invention, and it can be changed according to the intention or custom of the technician working in the field, and the definition is based on the contents throughout this specification It should be reduced.

FIG. 1 is a perspective view of a locking device for explaining a locking device according to a preferred embodiment of the present invention, and FIG. 2 is an installation state view for illustrating a locking device.

As shown in FIG. 2, the locking device 100 can prevent the door 10 from being opened due to at least the damage of the latch 210 even if a strong external pressure is generated. As shown in FIG. 2, The door 210 can be prevented from being damaged due to damage to the latch 210 or removal from the strike 31 or entrance of the door 110 into the housing 110, The security of the locking device can be doubled.

This locking device 100 is a door locking device capable of releasing the locked state of the door 10 through a key. The locking device 100 includes a housing 110 of a hermetic structure provided on the door 10, a key groove 41 on the exposed surface, A cylinder 40 provided with a rotation cam 43 on the opposite face and detachably coupled to the housing 110, a cylinder 40 provided on one side of the housing 110, and a striker 31 provided on the frame 30, An auxiliary latch unit 300 for restricting the movement of the latch unit 200 at least in a closed state of the door, a latch unit 200 A releasing rod 400 for releasing the restriction to the auxiliary latch unit 300 for restricting the movement of the cylinder 40 and the fixing unit 500 for maintaining the state of engagement between the cylinder 40 and the housing 110, do.

As shown in the figure, the housing 110 is a housing structure having at least one outlet 111 on one side and a cylinder coupling groove 160 on the other side. The housing 110 is embedded in the housing 20 of the door 10, And is fixed to the door 10 through the opening 113.

At this time, a cover C corresponding to the housing 110 is further coupled to one surface of the installed door 10 to prevent the housing 110 from being exposed to the outside. The cylinder 40 is detachably coupled to the cylinder coupling groove 160 through the bore 21 after the housing 110 is embedded in the door 10. [

3, the housing 110 includes a latch mounting portion 120 in which the latch portion 200 is installed, an auxiliary latch mounting portion 130 in which the auxiliary latch 310 is installed, There are a fixing device mounting portion 140 in which the fixing rod 500 is installed and a releasing rod mounting groove 150 in which the releasing rod 400 is installed.

The latch mounting part 120 includes a first pull-out port 111 of the pull-out port 111 and a pulling column mounting groove 121 and a rotation lever (not shown) provided with a pulling column 230 for resilient pulling of the latch part 200 And a pull rod installation groove 123 in which a pull rod 250 is installed to rotate and engage with the latch portion 200 to guide the pull of the latch portion 200.

The latch butane body 260 is a coil shaped spring whose one end is connected to the pull rod 250 and the other end is connected to the latch part 200. The latch butane body 260 is connected to the latch part 200 ) For the elastic withdrawal and entry.

The auxiliary latch mounting portion 130 is provided with a second outlet 111-2 which is formed in parallel with the first outlet 111-1 of the outlet 111 and allows the auxiliary latch 310 to be drawn out or drawn into the housing 110 And includes at least one auxiliary latch fixing groove (131, 133).

The auxiliary latch mounting portion 130 is parallel to the latch mounting portion 120.

The fixing device mounting portion 140 includes a first fixing device mounting groove 141 in which the adjusting portion 510 is installed and an adjusting portion 510 that presses the cylinder 40 to restrict the rotation of the cylinder 40, And a second fixing device installation groove 143 in which the component 520 is installed.

The release rod installation groove 150 is a groove for installing the release rod 400 so that the release rod 400 is rotatable. At this time, the release rod 400 is rotated through the release rod rotation axis 410 to the release rod installation groove 150 And a description thereof will be given later.

4 to 6, the latch unit 200 installed in the latch installation unit 120 may be configured such that the latch 210 is elastically drawn out or restored through the first outlet 111 to open the door 10 Or closed state, and will be described with reference to the accompanying drawings.

Fig. 4 is a perspective view of a latch shown for explaining a latch according to a preferred embodiment of the present invention, and Figs. 5 and 6 are side views of a locking device for explaining an operating state of the latch portion.

The latch portion 200 is connected to the other end of the latch butt 260 and is capable of elastic sliding movement. The latch portion 200 includes a pull panel 220 having protruding latching protrusions 223 protruding from one side thereof facing the auxiliary latch portion 300, And a pull rod 250 rotatably installed between the opposite ends of the pull rod mounting groove 123 and having one end engaged with the pull panel 220 and the other end engaged with the rotating piece 255.

As shown in the figure, the pulling panel 220 is formed with a rectangular pulling groove 221 to which one end of the pulling rod 250 is engaged, and protrudes from the exposed face to connect the other end of the latching butt 200 The first elastic ring 225 and the second elastic ring 241 provided on the adjacent side of the connection bracket 240 and coupled to the connection bracket 240 and the second elastic ring 270 elastically connected through the latch portion auxiliary elastic body 270, And an elastic ring 227.

The connecting bracket 240 is a member for connecting the latch 210 and the towing panel 220, and is intended to induce a smooth closing of the door by generating a predetermined clearance.

Since the connecting bracket 240 is coupled to the draw panel 220 through the fastening holes H of the long sides as shown in the drawing, the latch 210 coupled with the draw panel 220 through the connecting bracket 240 is fastened It is possible to flow by an interval corresponding to the sphere H. Accordingly, when the door is closed, the latch 210 can reduce the frictional impact with the frame, so that a smooth closing of the door can be realized.

It is preferred that such a connection bracket 240 is coupled in a manner such that a predetermined elastic flow is possible through the traction panel 220 and the latch portion auxiliary elastomer 270 to allow the latch 210 to move in a direction corresponding to the fastener H So that they can flow elastically in the interval.

The latch 210 is disposed in a direction in which the first latch 211 and the second latch 213 of the triangular structure are opposed to each other to improve the security, ) In order to limit the flow of water.

The pulling rod 250 is provided at one end of the pulling rod rotary shaft 251 provided between both ends and has a pulling piece 253 engaged with the pulling groove 221 and a rotating piece 255 provided at the other end to engage with the pivoting lever 43 .

When the rotary lever 43 rotates in the clockwise direction as shown in FIG. 3, the pulling rod 250 is rotated counterclockwise around the pulling rod rotary shaft 251. At this time, due to the reaction, the pulling piece 253 pulls the pulling panel 220 in a direction opposite to the elasticity, and eventually the latch 210 is pulled into the housing 110.

As described above, the latch unit 200 allows the latch 210 to be pulled into or pulled out from the housing 110 by the principle of action reaction that operates in conjunction with the rotation lever 43, thereby opening or closing the door 10 And the closed state is physically reinforced through the auxiliary latch unit 300, thereby further improving the security.

The auxiliary latch unit 300 restricts the movement of the latch unit 200 as shown in FIGS. 7 to 10, which will be described below with reference to the drawings.

FIG. 7 is a perspective view of an auxiliary latch portion for explaining an auxiliary latch portion according to a preferred embodiment of the present invention, FIG. 8 is a sectional view for explaining an operation state of an auxiliary latch, FIGS. Is a side view of the locking device shown for purposes of illustration.

The auxiliary latch unit 300 includes a guide bracket 320 coupled with the auxiliary latch 310 and slidable in the longitudinal direction thereof, a fixing bracket 330 installed in the first auxiliary latch fixing groove 131 of the auxiliary latch fixing groove, A slider 340 installed in the second auxiliary latch fixing groove 133 of the auxiliary latch fixing groove so as to be slidable and an auxiliary latch elastic member provided between the guide bracket 320 and the fixing bracket 330 360).

The auxiliary latch 310 has a conical shape and is formed at one side facing the frame 30 at a sharp angle and has an extended structure that is coupled to the guide bracket 320 at one side and has a slope between one side and the other side Which is intended to allow the auxiliary latch 310 to be pulled into the housing 110 by its friction when it comes into contact with the frame 30.

The guide bracket 320 includes a guide rod 321 in the form of a bar for guiding the auxiliary latch 310 into or out of the housing 110. The guide bracket 320 is disposed side by side with the guide rod 321, And one end of the guide rod 321 and the guide ring 323 are formed as an integral structure so that the auxiliary latch 321 is coupled to the auxiliary latch 321 through the auxiliary latch engaging pin 311, 0.0 > 310 < / RTI >

The guide ring 323 is spaced apart from the guide rod 321 so as to surround the guide rod 321. The end ring is bent at a predetermined angle and preferably has an end portion The shape of wrapping the slider 340 through the two bends, and the angle and number of bending are not limited to the illustrated form.

8A, the guide hook 323 may be formed to surround one side of the slider to suppress the elastic pulling and to prevent the auxiliary latch 310 (for example, the auxiliary latch 310 from coming into contact with the frame 30) The guide bracket 320 is moved away from the slider 340 by moving the guide bracket 320 together with the guide bracket 320 as shown in FIG. 8B so that the slider 340 is pulled out in the elastic direction.

The pulled slider 340 restricts the movement of the pull panel 220 as shown in FIG. 10, which will be described later.

The fixing bracket 330 exists as a support for supporting the elastic movement of the guide rod 321 and the slider 340. The fixing bracket 330 is a hexahedral block body and has at least one fixing bracket coupling protrusion 333 A guide bracket body 331 which is protruded to be coupled to the housing 110 through the first auxiliary latch fixing groove 131 and a guide bracket 331 which penetrates the guide bracket body 321 and which supports the sliding movement of the guide bracket 320 The hole 335 is provided on the other surface of the fixing bracket 330 so that the fixing wall 337 for elastically supporting the slider 340 and the elasticity of the guide bracket 320 relative to the fixing bracket 330 And an auxiliary latch elastic body 360 to which the latch latch 360 is attached.

Since the fixing bracket coupling protrusion 333 corresponds to the first auxiliary latch fixing groove 131, it is possible to stably engage the fixing bracket 330 and thereby support the stable elastic movement of the guide rod 321 and the slider 340 It is possible.

The guide hole 335 supports the guide rod 321 sliding along with the auxiliary latch 310 to ensure smooth movement of the guide bracket 320.

The fixed wall body 337 supports the slider elastic body 351 protruded from one side adjacent to the slider 340 so as to be housed in the slider so that the slider 340 can be elastically moved.

The auxiliary latch elastic body 360 is disposed on the outer side of the guide rod 321 so that one end thereof is supported by the guide bracket 320 and the other end is supported by the fixing bracket 330 and the external pressure When the auxiliary latch 310 is moved to the indicated direction (indicated by an arrow) by the closing of the auxiliary latch 310 when the auxiliary latch 310 comes into contact with the frame 30 and pressure is applied in the direction opposite to the elasticity) So as to elastically restore the auxiliary latch 310 as shown in FIG. 8A.

The slider 340 exists as an element for restricting the movement of the latch portion 200 by engaging with the latching jaw 223 of the pulling panel 220 through slide movement.

The slider 340 includes a slider body 341 having a slider coupling protrusion 343 formed on at least one surface thereof and coupled through a second auxiliary latch fixing groove 133, A slider slope surface portion 345 which is present in the shape of an obtuse angle between both ends of one surface of the slider body 341 and which forces the slider 340 to be pulled in the elastic drawn state by pulling the guide ring 323, And a slider releasing protrusion 347 which protrudes from one end of the same surface of the slider 340 and protrudes from one end of the same surface as the slider 340 protruding from one end of the same surface as the slider 340, The elastic withdrawing state is maintained through the slider elastic body 351 in the form of a coil housed in the slider elastic body accommodating portion 349 with the elastic member 337 therebetween.

Further, the second auxiliary latch fixing groove 133 is a rectangular groove, which is longer than the slider coupling protrusion 343 in the longitudinal direction, so that the slider can elastically slide and move in the longitudinal direction.

8B, the slider 340 is engaged with the latching protrusions 223 of the pulling panel 220, as shown in FIG. 10, so that the latches 210 are engaged with the housing 110 Thereby restricting the entrance of the door, thereby maintaining the locked state of the door.

7 and 8, the slider slope portion 345 exists in the shape of a depressed portion between at least one end of at least one surface of the slider body 341 corresponding to the end portion of the guide ring 323, (E.g., when the contact between the auxiliary latch 310 and the frame 30 is released, that is, when the door 10 is opened) due to elasticity, such as 8a, The slider 340 rubs against the slider slope portion 345 while being restored, so that engagement with the slider 340 is released.

However, when the door 10 is closed, the slider 340 maintains the engagement with the latching jaw 223, so that the forced release can not be made. The rotary lever 43 is operated through the key, The release rod 400 presses the slider releasing projection 347 so that the engaging protrusion 223 and the slider 340 are disengaged from each other.

This release load 400 is described with reference to FIGS. 11 to 13 together.

Fig. 11 is a perspective view of a release rod shown for explaining a release rod according to a preferred embodiment of the present invention, and Figs. 12 and 13 are side views of a lock device shown for explaining the operation state of the release rod.

The release rod 400 includes a release rod coupling hole 405 provided between both ends, a pressing piece 401 provided at one end and rotating around the release rod coupling hole 405 to press the slider release projection 347, And a pushing piece portion 403 configured to come into contact with the rotating lever 43.

The release rod 400 is rotatably coupled to the release rod installation groove 150 by a release rod rotation axis 410 coupled to the release rod engagement hole 405.

12, when the rotary lever 43 is rotated in the clockwise direction as shown in Fig. 12, the rotary lever 43 presses the pushing piece portion 403, and the pushing piece portion 401 presses the slider releasing protrusion 347, 13, the engaging state of the slider 340 and the pressing piece 520 is released so that the element for restricting the movement of the latch portion 200 is removed.

The rotation lever 43 further rotates in the clockwise direction to engage with the rotation piece 255 of the pulling rod 250. At this time the reaction force causes the pulling piece 253 to pull the pulling panel 220, 210 into the housing 110 to convert the door 10 into an openable state.

As described above, according to the present invention, the locking device allows the auxiliary latch to release the restriction of the movement of the latch by rotation of the key only, and makes the opening of the door easier because the latch is pulled out of the strike to open the door.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Door 20:
21: perforation 30: frame
31: Strike 40: Cylinder
41: keyway 43: rotation lever
100: locking device 110: housing
111: Outlet 113: Housing bracket
120: latch mounting portion 121: pull column mounting groove
123: pull rod mounting groove 130: auxiliary latch mounting portion
131: first auxiliary latch fixing groove 133: second auxiliary latch fixing groove
140: fixing device mounting part 141: first fixing device mounting groove
143: second fixing device mounting groove 145: fixing device slide groove
150: Release rod installation groove 160: Cylinder coupling groove
200: latch portion 210: latch
211: first latch 213: second latch
220: Towing panel 221: Towing groove
223: hooking jaw 225: first elastic ring
227: second elastic ring 230: pulling column
240: connection bracket 241: third elastic ring
250: tow rod 251: pull rod rotary shaft
253: Towing piece 255: Rotating piece
260: latch-buttung body 270: latch portion auxiliary elastic body
300: auxiliary latch unit 310: auxiliary latch
311: Auxiliary latch engaging pin 320: Guide bracket
321: guide rod 323: guide ring
330: Fixing bracket 331: Fixing bracket body
333: fixing bracket coupling protrusion 335: guide hole
337: fixed wall body 340: slider
341: Slider body 343: Slider coupling projection
345: Slider inclined surface portion 347: Slider releasing projection
349: Slider elastic body accommodating portion 351: Slider elastic body
360: Auxiliary latching elastic body 400: Release rod
401: pressure piece portion 403:
405: Release rod fastening hole 410: Release rod rotation axis
500: Fixing device 510: Adjusting part
520:

Claims (8)

A housing having a housing structure in which at least one outflow opening is provided on one surface facing the frame provided with the strike and a cylinder coupling groove is formed on the other surface;
A cylinder having a key groove formed on an exposed surface thereof, a rotating lever provided on an opposite surface thereof, and detachably coupled to the housing through the cylinder coupling groove;
The latch is slidably received in the housing by being engaged with the rotary lever, and the latch is drawn or drawn through the outlet by the elasticity so that the latch is received in or released from the strike, A latch portion for holding the latch portion;
An auxiliary latch portion disposed in parallel with the latch portion in the housing and configured to maintain a closed state of the door by restricting movement of the latch at least in a closed state of the door; And
And a release rod for releasing the restriction of the latch by moving the auxiliary latch portion for restricting the movement of the latch to engage with the rotation lever. The method according to claim 1,
The housing includes:
A latch mounting part including a first pull-out port of the pull-out port, a pulling column mounting groove on which a pulling column is installed for elastic pulling of the latch part, and a pulling rod mounting groove for pulling the latch part by engaging with the rotating lever;
An auxiliary latch mounting portion that is provided in parallel with the first outflow port of the outflow port and has a second outflow port that allows the auxiliary latch to be drawn out or drawn into the housing and has at least one auxiliary latch fixing groove;
A fixing device mounting portion in which a fixing device for restricting the rotation of the cylinder is installed; And
And a release rod installation groove on which a release rod is installed. 3. The method of claim 2,
The latch unit includes:
A pulling panel having a latching butt protruding from one side of the latching butane member, the other side of the latching butane member being connected to the latching unit,
A connecting bracket installed between the tow panel and the latch; And
And a pull rod rotatably installed between the opposite ends of the pull rod installation groove, the pull rod having one end engaged with the pull panel and the other end engaged with the pivot lever. The method of claim 3,
The tow rod
A pull rod rotating shaft provided between the opposite ends of the pull rod, the pull rod being rotatably coupled to the pull rod mounting groove;
A traction piece provided at one end to engage with the traction panel; And
And a rotation piece provided at the other end to engage with the rotation lever. 3. The method of claim 2,
The auxiliary latch unit
A guide rod in the form of a bar, one end of which is engaged with the auxiliary latch, is slid in the longitudinal direction together with the auxiliary latch and supports the auxiliary latch to be drawn into or withdrawn from the housing, A guide bracket including guide rails arranged at predetermined angles and bent at a predetermined angle at an end thereof;
A fixing bracket fixed to the first auxiliary latch fixing groove of the auxiliary latch fixing groove and serving to support the guide bracket when the guide bracket is moved;
A slider installed parallel to the fixing bracket through a second auxiliary latch fixing groove of the auxiliary latch fixing groove and slidably installed to elastically support the latching jaw; And
And an auxiliary latch elastic body installed between the guide rod and the fixing bracket to induce elastic drawing of the auxiliary latch,
Wherein the slider is supported at the bent end of the guide ring, thereby limiting the slide movement. 6. The method of claim 5,
The fixing bracket includes:
A locking bracket body, which is a six-sided block body, having a fixing bracket coupling protrusion protruded at least on one surface thereof and coupled to the first auxiliary latch fixing groove;
A guide hole for supporting the slide movement of the guide bracket by penetrating the guide rod; And
And a fixed wall provided on the other surface for elastically supporting the slider. The method according to claim 6,
The slider
A slider body having a slider coupling protrusion formed on at least one surface of the block body and slidably coupled through the second auxiliary latch fixing groove;
A slider slope part which is present in the shape of a negative angle between both ends of one surface of the slider body which is in contact with the guide ring and in which the slider in a pulled-out state is brought into contact with the guide ring; And
And a slider releasing protrusion formed protruding from one end of the same surface as the slider slope portion and forcibly pulling the slider in a pulled-out state by the pressing of the release rod,
Wherein the slider is configured to hold the drawn state by a coil-shaped slider elastic body accommodated in the slider elastic body accommodating portion with the fixed wall interposed therebetween. 8. The method of claim 7,
The release rod
A release rod fastening hole provided between both ends;
A pressing piece portion provided at one end and pressing the slider releasing projection by rotating about the releasing rod fastening hole; And
And a pushing piece portion provided at the other end and rotating about the release rod fastening hole in a state in which the pushing piece portion abuts on the rotating piece to press the slider releasing protrusion,
Wherein the release rod is rotatably coupled to the release rod installation groove by a release rod rotation shaft coupled to the release rod installation groove via the release rod fastening hole.

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