Door locking mechanism

Abstract

To provide a locking mechanism for a door body which can prevent rattling of the door body in a locked state, has safety against unauthorized unlocking, and is excellent in design. [Solution] The door body locking mechanism comprises a first locking member 1 fixed to a first member D1, a second locking member 2 fixed to a second member D2, and a door body restraining member 3 equipped with a locking mechanism 31 attached to the second locking member 2, the first locking member 1 having an extension portion 12 extending from a fixed portion 11 to the first member D1 and reaching the surface of the second member D2, the second locking member 2 having an upright portion 22 extending from a fixed portion 21 to the second member D2 and on which the door body restraining member 3 is attached, and the door body restraining member 3 has a bottom surface 30 which abuts against the extension portion 12 of the first locking member 1 located on the surface of the second member D2 and the fixed portion 21 of the second locking member 2 when attached to the upright portion 22 of the second locking member 2.

Description

[Technical field]

[0001] The present invention relates to a door locking mechanism that can be attached to, for example, a double-door door. [Background technology]

[0002] 2. Description of the Related Art As a locking mechanism for a door, for example, a double door, a metal fitting called a latch (see, for example, Patent Documents 1 to 3) has conventionally been widely used. The latch can be locked by fitting a padlock into the latch hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-185304 A [Patent Document 2] Japanese Utility Model Application Publication No. 4-122169 [Patent Document 3] Japanese Utility Model Application Publication No. 3-40463 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, while the door locking mechanisms described in Patent Documents 1 to 3 can be easily installed as door locking mechanisms, they cannot prevent the door body from rattling when locked, and since the padlock including the shackle is exposed, there are problems with safety against unauthorized unlocking and with design.

[0005] The purpose of this invention is to provide a locking mechanism for a door that can prevent the door from rattling when locked, and that is safe against unauthorized unlocking and has an excellent design, in consideration of the problems associated with the metal fittings called latches. [Means for solving the problem]

[0006] In order to achieve the above object, the door locking mechanism of the present invention is as follows: A locking mechanism for a door, comprising a first locking member fixed to a first member, a second locking member fixed to a second member, and a door restraining member having a locking mechanism attached to the second locking member, the first engaging member has an extension portion extending from a portion fixed to the first member to a surface of the second member; The second locking member has a rising portion extending from a fixed portion relative to the second member and to which the door body restraining member is attached, The door body restraining member has a bottom surface that comes into contact with the extension portion of the first locking member located on the surface of the second member and the fixed portion of the second locking member when the door body restraining member is attached to the upright portion of the second locking member. It is characterized by:

[0007] In this case, the extension of the first locking member may have an opening into which the second locking member fits.

[0008] The first locking member may also be provided with an upright portion extending from a portion fixed to the first member and to which a door body restraining member is attached.

[0009] The first member and the second member may be formed of a door body.

[0010] Also, one of the first member and the second member may be a door body, and the other may be a door frame. Effect of the Invention

[0011] According to the door locking mechanism of the present invention, when the door restraining member is attached to the upright portion of the second locking member, it has a bottom surface that abuts on the extension portion of the first locking member located on the surface of the second member and the fixed portion of the second locking member, thereby preventing the door from rattling in the locked state and providing a door locking mechanism that is safer against unauthorized unlocking and has an excellent design. [Brief description of the drawings]

[0012] [Figure 1] 1 shows one embodiment of the door locking mechanism of the present invention, in which (a) is a front view when locked, (b) is a cross-sectional view from the bottom side of the same, and (c) is a cross-sectional view from the bottom side when unlocked and the door restraining member is stored. [Diagram 2] 1A, 1B, and 1C are explanatory views of a first locking member of the locking mechanism of the door body, in which (a) is a front view, (b) is a right side view, and (c) is a bottom view. [Diagram 3] 1A, 1B, and 1C are explanatory views of a second locking member of the locking mechanism of the door body, in which (a) is a front view, (b) is a left side view, and (c) is a bottom view. [Figure 4] FIG. 13 is an explanatory diagram of the door restraint member of the door locking mechanism, (a) is a front view, (b) is a bottom view, (c) is a rear view, (d) is a right side view, (e) is an AA cross-sectional view of (a), and (f) is a BB cross-sectional view of (b). [Diagram 5] 1A and 1B show the state before the locking mechanism of the door body is locked, with (a) being a perspective view and (b) being a front view. [Figure 6] 1A and 1B show the state in which the locking mechanism of the door body is locked, with FIG. [Figure 7] 1A and 1B show the state in which the locking mechanism of the door body is unlocked and the door body restraining member is stored, (a) being a perspective view and (b) being a front view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the door locking mechanism of the present invention will be described with reference to the drawings.

[0014] 1 to 7 show an embodiment of the door locking mechanism of the present invention. This door locking mechanism relates to a door locking mechanism for locking various doors of buildings and furniture, such as double doors, outward opening doors, and inward opening doors, and is a door locking mechanism including a first locking member 1 fixed to a first member D1 (in this embodiment, the first door body D1), a second locking member 2 fixed to a second member D2 (in this embodiment, the second door body D2), and a door restraining member 3 equipped with a locking mechanism 31 attached to the second locking member 2. The first locking member The material 1 has an extension portion 12 extending from a fixing portion 11 to the first member D1 and reaching the surface of the second member D2, the second locking member 2 has a standing portion 22 extending from a fixing portion 21 to the second member D2 and to which the door body restraining member 3 is attached, and the door body restraining member 3 has a bottom surface 30 that abuts against the extension portion 12 of the first locking member 1 located on the surface of the second member D2 and the fixing portion 21 of the second locking member 2 when attached to the standing portion 22 of the second locking member 2.

[0015] Here, the extension portion 12 of the first locking member 1 is provided with an opening 12a into which the second locking member 2 fits. As a result, with the fixing portion 21 of the second locking member 2 inserted into the opening 12a of the extension portion 12 of the first locking member 1, the bottom surface 30 of the door body restraining member 3 can be abutted against the extension portion 12 of the first locking member 1 and the fixing portion 21 of the second locking member 2, and the door bodies D1 and D2 in the locked state can be locked. This can reliably prevent rattling of 2.

[0016] The first locking member 1 is provided with an upright portion 13, which extends from a fixed portion 11 for the first member D1 and to which the door body restraining member 3 is attached. As a result, when the door body locking mechanism is unlocked, the door body restraining member 3 can be stored by attaching it to the standing portion 13 of the first engaging member 1, and loss of the door body restraining member 3 can be prevented.

[0017] The door body restraining member 3 is equipped with a locking mechanism 31 (a cylinder lock in this embodiment). By locking the locking mechanism 31, the steel ball 32 fits into the hole 22a formed in the upright portion 22 of the second locking member 2 inserted into the groove 33 of the door body restraining member 3 (or the hole 13a formed in the upright portion 13 of the first locking member 1), and is thereby attached to the upright portion 22 of the second locking member 2 (or the upright portion 13 of the first locking member 1).

[0018] The fixing means for the fixing portion 11 of the first locking member 1 to the first member D1 and the fixing means for the fixing portion 21 of the second locking member 2 to the second member D2 can be a male screw (including a screw) or double-sided tape depending on the constituent materials (metal, wood) of the first member D1 and the second member D2.

[0019] In this embodiment, the first member D1 and the second member D2 are described as an example of a first door body D1 and a second door body D2 that open like a double door. However, the locking mechanism of this door body can also be applied to an outward-opening door body or an inward-opening door body. Depending on the installation form of the door body's door frame, the first member can be made up of the door body and the other can be made up of the door frame, or the first member can be made up of the door frame and the other can be made up of the door body.

[0020] According to this door body locking mechanism, when the door body restraining member 3 is attached to the upright portion 22 of the second locking member 2, it has a bottom surface 30 that abuts against the extension portion 12 of the first locking member 1 located on the surface of the second member D2 and the fixed portion 21 of the second locking member 2, thereby preventing rattling of the door bodies D1, D2 in the locked state and providing a door body locking mechanism that is safe against unauthorized unlocking and has an excellent design.

[0021] The above describes the door locking mechanism of the present invention based on its embodiment, but the present invention is not limited to the configuration described in the above embodiment, and the configuration can be changed as appropriate within the scope of the spirit of the invention. [Industrial Applicability]

[0022] The door locking mechanism of the present invention can prevent the door from rattling when locked, and is excellent in safety against unauthorized unlocking and design, so it can be widely used as a mechanism for locking door bodies, such as double-door doors, in both existing and new buildings. [Explanation of symbols]

[0023] D1 First member (first door body) D2 Second member (second door body) 1 First locking member 11 Fixed part 12 Extension section 13 Standing part 13a hole 2 Second locking member 21 Fixed part 22 Standing part 22a hole 3 Door body restraining member 30 Bottom 31 Locking mechanism 32 steel ball 33 Groove

Claims

1. A locking mechanism for a door, comprising a first locking member fixed to a first member, a second locking member fixed to a second member, and a door restraining member having a locking mechanism attached to the second locking member, the first engaging member has an extension portion extending from a fixing portion for the first member to a surface of the second member; The second locking member has a rising portion extending from a fixed portion relative to the second member and to which the door body restraining member is attached, The door body restraining member has a bottom surface that comes into contact with the extension portion of the first locking member located on the surface of the second member and the fixed portion of the second locking member when the door body restraining member is attached to the upright portion of the second locking member. A door locking mechanism characterized by the above.

2. The extension of the first locking member has an opening into which the second locking member is inserted.

2. The door locking mechanism according to claim 1.

3. The first locking member has an upright portion extending from a fixed portion for the first member and to which a door body restraining member is attached.

3. A locking mechanism for a door body according to claim 1 or 2.

4. The first member and the second member are made of a door body.

3. A locking mechanism for a door body according to claim 1 or 2.

5. One of the first member and the second member is a door body, and the other is a door frame.

3. A locking mechanism for a door body according to claim 1 or 2.

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