KR20160015907A - Locking device for folding door - Google Patents

Abstract

The present invention provides a locking device for a folding door. The locking device for a folding door includes: a handle unit installed in a door frame; and a locking unit connected to the handle unit and locking a folding door according to an operation of the handle unit. The handle unit includes: a body fixed to the door frame; a handle supported on the body to be rotated; a square bar connected between the handle and the locking unit and operating the locking unit when the handle is rotated; and an elastic member installed in the body and elastically coming into contact with the side of the square bar to maintain a rotated position of the handle. The locking device for a folding door prevents the handle from returning to an initial position, thereby maintaining a locked position of the folding door and an unlocked position.

Description

LOCKING DEVICE FOR FOLDING DOOR

The present invention relates to a locking device for a folding door installed in a folding door to lock and unlock the folding door.

Generally, a folding door can be opened to more than 95% because two or more doors are opened or closed by folding, and the door can be used as an indoor partition.

Conventional folding door handle devices are sequentially formed in a state in which the first, second, and third storage spaces are isolated from the front side to the rear side, as disclosed in Japanese Patent Registration No. 10-1255238 (Apr. 10, 2013) A housing accommodated in a frame of the unit door in which the handle device is installed; a helical pinion gear disposed in the center of the second housing space; and a housing accommodated in the second housing space and disposed above and below the helical pinion gear, An upper lock member formed with a gear guide block that is threadedly coupled to guide the helical pinion gear and a rack gear that meshes with one side of the helical pinion gear and is vertically moved up and down according to the rotational direction of the helical pinion gear, A lower lock member having a rack gear engaged with the other side and being operated to move up and down in the direction opposite to the upper lock member in accordance with the rotation direction of the helical pinion gear, And a stick-shaped handle coupled to the tip of the handle shaft for rotating the handle shaft in a forward or reverse direction.

In such a conventional handle device, when the handle is turned, the upper lock member and the lower lock member are linearly moved by the helical pinion gear and the rack gear to unlock or lock the folding door.

However, the conventional handle device has no structure for fixing the position of the handle, and when the handle is turned after the handle is turned, there is a possibility that the handle is returned to the original state, and the folding door can not be kept locked .

Patent Document 1: Registered Patent Publication No. 10-1255238 (April 10, 2013)

It is an object of the present invention to provide a foldable door which is capable of locking the folding door when the handle is rotated in one direction and locking the folding door when the handle is rotated in the other direction, , Thereby enabling to maintain the locked position and the unlocked position of the folding door.

A handle unit mounted on a door frame for a folding door of the present invention; and a lock unit connected to the handle unit and locking the folding door according to the operation of the handle unit, , A handle rotatably supported on the body, a rectangular bar connected between the handle and the lock unit to actuate the lock unit when the handle is rotated, and a resilient contact And an elastic member for holding the rotated position of the handle.

The elastic member is formed in one of a plate shape, a band shape, and a circular bar shape, and is composed of a pair, both ends of which are fixed to the inside of the body and are elastically contacted with two of four sides of the square bar .

Wherein the square bar has a rectangular cross section and is connected to the lock unit, a support part formed at one end of the rod part, fixed to the handle, formed to have a larger cross-sectional area than the rod part, .

Wherein the handle comprises a handle having a hinge groove formed therein at one end thereof for receiving the hinge pin, a cover member inserted in the hinge groove and having a pin hole through which the hinge pin passes, and a cover member disposed inside the hinge groove, And may include a spring that provides elastic force.

Wherein the locking unit comprises a housing inserted into the door frame, a rotary member rotatably installed at a center of the housing and connected to the rectangular bar, and a rotary member disposed linearly in a vertical direction inside the upper portion of the housing, A lower actuating member arranged linearly in a vertical direction inside the lower portion of the housing and linearly reciprocating when the rotary member is rotated, and a lower actuating member connected to the upper actuating member An upper rod that is engaged with a lock groove of the upper frame, and a lower rod that is connected to the lower operation member and is engaged with a lock groove of the lower frame.

A converting unit may be formed between the rotating member and the upper operating member and between the rotating member and the lower operating member to linearly move the upper operating member and the lower operating member when the rotating member is rotated.

Wherein the converting unit includes a first operating projection and a second operating projection projecting at an interval of 180 degrees on the outer surface of the rotating member and a pair of first and second operating projections formed on the upper operating member, And a pair of second protrusions formed on the lower operation member and protruding at regular intervals to insert the second operation protrusions.

The upper operation member may include a rod insertion portion into which the upper rod is inserted, and a support portion extending downward from the rod insertion portion and supported so as to be linearly movable in the housing, wherein the first operation projection is formed.

As described above, the locking device for the folding door of the present invention is configured such that the elastic member is brought into contact with the outer surface of the square bar connected to the handle to fix the rotated position of the handle, thereby preventing the handle from returning to its original state, Whereby the locked position of the folding door and the unlocked position can be maintained.

1 is a top view of a folding door according to an embodiment of the present invention.
2 is an exploded perspective view of a locking device for a folding door according to an embodiment of the present invention.
3 is an exploded perspective view of a locking unit of a locking device according to an embodiment of the present invention.
4 is an exploded perspective view of a handle unit of a locking device according to an embodiment of the present invention.
5 is a sectional view of a lock unit according to an embodiment of the present invention.
6 is an operational state diagram of a lock unit according to an embodiment of the present invention.
7 is a cross-sectional view of a handle unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification.

FIG. 1 is a top view of a folding door according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a folding door locking device according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a folding door 100 according to an embodiment of the present invention is foldably connected to a plurality of folding doors 100, one end of which is rotatably mounted on a side frame 110, A lower roller device (not shown) is installed on the lower frame 130 so as to be slidable and a lower roller device (not shown) is installed on the lower frame 130 so as to be slidable on the upper frame 120, At least one locking device 140 is provided for locking the folding door 100 to the upper frame 120 and the lower frame 130 when the folding door 100 is closed.

Here, the folding door 100 may be made of a transparent glass substrate, and metal, wood or synthetic resin may be used, and the door frame 10 is mounted on the outer surface thereof.

The locking device 140 includes a handle unit 30 mounted on a side surface of the door frame 10 and operated by a user and a handle unit 30 inserted into the door frame 10 and connected to the handle unit 30, And a locking unit 20 for locking the folding door 100 by engaging with a locking groove formed in the lower frame 130.

3, the handle unit 30 includes a body 32 fixed to the door frame 10, a handle 50 rotatably supported by the body 32, a handle 50, A rectangular bar 34 connected between the unit 20 and operating the lock unit 20 when the handle 50 is rotated and a pair of resilient members 34 provided on the body 32 and resiliently contacting the sides of the square bars 34 And an elastic plate 60 for holding the rotated position of the handle 50.

4, the body 32 is formed with a through hole 62 in which a handle 50 is rotatably supported, and a cylindrical shape in which a bolt 68 is inserted to be fastened to the door frame 10 A bolt hole portion 64 is formed on both sides. Both ends of the pair of elastic plates 60 are inserted into the body 32 to form an elastic plate supporting portion 66 for fixing both ends of the elastic plate 60. [

5, the square bar 34 has a rectangular shape and includes a rod portion 56 connected to the lock unit 20, a rod portion 56 formed at one end of the rod portion 56, And a support portion 58 to which the elastic plate 60 is contacted. The square bar 34 is formed with a circular plate portion 59 which is engaged with the inner surface of the body to prevent the rectangular bar 34 from being separated from the body 32. The support portion 58 is formed with a bolt fastening hole 53 to be fastened by the handle 50 and the bolt 51. [

The rod section 56 and the support section 58 are formed in a rectangular shape in cross section and the cross section area of the support section 58 is formed wider than the cross sectional area of the rod section 56, It is possible to widen the contact area of the handle, thereby improving the elastic supporting force, and thereby to more stably maintain the rotated position of the handle.

 The handle 50 includes a handle 52 having a hinge groove 12 at which a hinge pin 14 is supported at one end thereof and a hinge hole 52 inserted into the hinge groove 12 and through which the hinge pin 14 passes A spring member 18 disposed inside the hinge groove 12 and provided between the handle member 52 and the cover member 54 to provide an elastic force to the handle member 52; ).

A ring member 13 is provided between the cover member 54 and the body 32 to rotatably support the cover member 54.

The handle 50 is kept in a state where the handle 52 is positioned close to the door frame 10 by the spring 18. When the user grasps the handle 52 for operating the handle, The lower end of the handle 52 is pulled outward so that it is convenient to use. When the handle 52 is not used, the handle 52 is positioned close to the door frame 10, so that the protrusion of the handle can be minimized, .

The elastic plate 60 may be formed in various shapes such as a plate shape, a band shape, and a cylindrical shape, and is formed of a material having an elastic force that returns to the original shape when bent.

Here, the handle rotates 90 degrees or 180 degrees to actuate the locking device. However, when the user releases his / her hand at a position where the handle is rotated 90 degrees, the handle may return to its original state and the lock may be released.

Therefore, in the present embodiment, the elastic plate 60 is elastically contacted to the outer surface of the square bar 34 to support the rotated position of the handle 50, thereby preventing the handle 60 from returning to its original state can do.

6 and 7, the lock unit 20 includes a housing 72 and 74 inserted into the door frame 10 and opened at the upper and lower ends thereof, A rotary member 76 that is rotatably installed and connected to the square bar 34 and rotates together with the rotation of the square bar 34 and a rotary member 76 which is disposed so as to be linearly movable in the vertical direction inside the upper portion of the housings 72 and 74 An upper operation member 78 which is linearly reciprocated when the rotary member 76 is rotated; and an upper operation member 78 which is linearly reciprocally moved when the rotary member 76 is rotated, An upper rod 82 connected to the upper actuating member 78 and engaged with a locking groove of the upper frame 120 and a lower rod 82 connected to the lower actuating member 80, And a lower rod 80 which is engaged with a lock groove of the upper and lower plates 130 and 130.

The first and second housings 72 and 74 are formed by coupling the first housing 72 and the second housing 74 to each other and the rotating member 76 is rotated at the center of the first housing 72 and the second housing 74 A first passageway 83 is formed at the upper side of the housings 72 and 74 so that the upper operating member 78 is drawn out and drawn in. The housings 72 and 74 A second passage 84 through which the lower operating member 80 is drawn and drawn is formed.

The rotary member 76 is formed with a square hole 85 for inserting the rectangular bar 34 of the handle unit 30. The outer surface of the rotary member 76 has a first actuating projection 86 for actuating the upper actuating member 78, A second actuating projection 87 for actuating the lower actuating member 80 is formed to protrude at intervals of 180 degrees.

The upper operating member 78 includes a rod inserting portion 90 into which the upper rod 82 is inserted and a movable rod 80 extending downward from the rod inserting portion 90 and supported in a linearly movable manner inside the housings 72, And a pair of protrusions 94 formed at the moving rod portion 92 and protruding at regular intervals to insert the first actuating protrusions 86 thereinto.

That is, when the first operating projection 86 is inserted between the pair of projections 94 and the rotating member 76 is rotated, the first operating projection 86 is rotated, and the upper operating member 78 is rotated in the vertical direction And is linearly moved.

The lower operating member 80 includes a rod inserting portion 152 into which the lower rod 84 is inserted and a movable rod extending upward from the rod inserting portion 152 and supported so as to be linearly movable in the housings 72, And a pair of protrusions 156 formed on the moving rod 154 and protruding at regular intervals so as to insert the second actuating protrusion 87.

That is, when the second operating projection 87 is inserted between the pair of projections 156 and the rotating member 76 is rotated, the second operating projection 87 is rotated, and the lower operating member 84 is rotated in the vertical direction And is linearly moved.

The operation of the locking device for a folding door of the present invention thus constructed will be described below.

First, when pulling the handle 52 of the handle 50 to unlock the folding door 100, the handle 52 overcomes the elastic force of the spring 18 and is pulled outward. In this state, when the handle 52 is held and turned in one direction, the square bar 34 connected to the handle 50 is rotated and the rotary member 76 connected to the square bar 34 is rotated.

The first operating projection 86 of the rotating member 76 is then rotated to linearly move the upper operating member 78 downward and the second operating projection 87 of the rotating member 76 is rotated, Thereby linearly moving the member 80 in the upward direction. Then, the upper rod 82 is released from the lock groove of the upper frame 120, and the lower rod 84 is released from the lock groove of the lower frame 130, whereby the folding door is unlocked.

At this time, since the pair of elastic plates 60 are elastically contacted to the outer surface of the support portion 58 of the square bar 34, the handle 50 can be maintained in the rotated position without returning to the original state.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: Door frame 20: Locking unit
30: Handle unit 32: Body
34: square bar 50: handle
60: elastic plate 72, 74: housing
76: rotating member 78: upper operating member
80: lower operating member 86: first operating projection
87: second operating projection 100: folding door

Claims (8)

And a locking unit which is connected to the handle unit and locks the folding door according to the operation of the handle unit,
The handle unit includes a body fixed to the door frame,
A handle rotatably supported on the body,
A rectangular bar connected between the handle and the lock unit to actuate the lock unit by rotating the handle,
And an elastic member installed on the body and resiliently contacting the side surface of the square bar to maintain the rotated position of the handle. The method according to claim 1,
The elastic member is formed in one of a plate shape, a band shape, and a circular bar shape, and is composed of a pair, both ends of which are fixed to the inside of the body and are elastically contacted with two of four sides of the square bar And a locking device for locking the folding door. 3. The method of claim 2,
Wherein the square bar has a rectangular cross section and is connected to the lock unit, a support part formed at one end of the rod part, fixed to the handle, formed to have a larger cross-sectional area than the rod part, And a locking device for locking the folding door. The method of claim 3,
Wherein the handle comprises a handle having a hinge groove formed at one end thereof for receiving a hinge pin, a cover member inserted in the hinge groove and having a pin hole through which the hinge pin passes, and a cover member disposed inside the hinge groove, A locking device for a folding door comprising a spring providing an elastic force. The method according to claim 1,
The locking unit includes a housing inserted into the door frame,
A rotating member rotatably installed at the center of the housing and connected to the rectangular bar,
An upper actuating member disposed linearly in a vertical direction inside the upper portion of the housing and linearly reciprocating when the rotary member is rotated,
A lower operating member arranged linearly movably in a vertical direction inside the lower portion of the housing and linearly reciprocating when the rotary member is rotated;
An upper rod connected to the upper operating member and engaged with a lock groove of the upper frame,
And a lower rod connected to the lower operating member and engaged with a locking groove of the lower frame. The method according to claim 1,
Wherein a converting unit is formed between the rotating member and the upper operating member and between the rotating member and the lower operating member to linearly move the upper operating member and the lower operating member when the rotating member is rotated. The method according to claim 6,
The converting unit includes a first operating projection and a second operating projection projecting from the outer surface of the rotating member at intervals of 180 degrees,
A pair of first protrusions formed on the upper operation member and protruding at regular intervals to insert the first operation protrusions,
And a pair of second protrusions formed on the lower operation member and protruding at regular intervals to insert the second operation protrusion. 8. The method of claim 7,
The upper operation member includes a rod insertion portion into which the upper rod is inserted,
And a support portion extending downward from the rod insertion portion and being supported in the housing so as to be linearly movable, wherein the first operation protrusion is formed.

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