JP2005030118A - Crescent lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a firm crescent hardly pried open by a bar or the like by increasing the strength of a crescent fitting. <P>SOLUTION: In the crescent lock 1 having a locking side hardware 4 provided with a crescent 7 mounted freely rotatably and fixed to the inside screen side part and a crescent fitting 8 provided with a substantially L-shaped cross-section hook 8a to be engaged with the crescent 7 and fixed to the outside screen side, the fitting 8 is provided with a deformed restrictive member 9 regulating the deformation of the hook 8a at the adjacent position of the hook 8a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a crescent lock in which the strength of a crescent bracket is reinforced.

Conventionally, a crescent lock is known as a locking device for a sash such as a sliding window. As shown in FIG. 5, the crescent lock has a base metal 51 attached to the vertical shaft of the indoor shoji 54, and a bezel-like shape attached to the base metal 51 via a crescent shaft 53 so as to be rotatable. Of the crescent 52 and a crescent bracket 56 having a hook portion 56a attached to the outdoor shoji 55 and engaged with the crescent 52 (see, for example, Patent Document 1 below).
Japanese Patent Laid-Open No. 11-93488

  However, as shown in FIGS. 6 (A) and 6 (B), the crescent bracket 56 uses a bracket obtained by bending a thin plate cut into a predetermined shape. When the force is applied in the opening direction of the shoji by forcibly inserting the hook, as shown in FIG. 7, the hook portion 56a of the crescent bracket 56 is greatly deformed to the outside and disengages from the crescent 52, so that the shoji can be pry open. was there.

  On the other hand, if the member has no limit on the fit, it is possible to make a structure in which deformation does not occur by applying a general rigidity increasing process such as increasing the thickness or forming a reinforcing rib. However, in the case of the crescent bracket, since the shojis adjacent to the interior and exterior surfaces are opened and closed with each other, there are restrictions such as processing within a predetermined thickness, and processing is also simple from the viewpoint of manufacturing cost. There is a strong demand for it.

  Therefore, a main object of the present invention is to provide a strong crescent lock that is not unlocked even by prying with a bar or the like by reinforcing the strength of the crescent bracket.

In order to solve the above-mentioned problem, as the present invention according to claim 1, a locking side metal fitting which is provided with a crescent mounted rotatably and is fixed to the indoor shoji side, and a substantially L-shaped cross section with which the crescent engages. In the crescent lock consisting of a crescent bracket that has a hook part and is fixed to the outdoor shoji side,
The crescent lock is provided with a deformation restricting member that restricts deformation of the hook portion at a position adjacent to the hook portion.

  In the present invention described in claim 1, a deformation restricting member for restricting deformation of the hook portion is provided at a position adjacent to the hook portion. Although the shape of the deformation regulating member is not limited, for example, it can be a button shape having a certain height, and by arranging it adjacent to the hook portion, the shoji is pry open by a bar, etc. When a large force in the tilting direction is applied to the hook portion, the deformation restricting member supports the hook portion on the back side to prevent deformation, and is prevented from being unlocked even by prying with a bar or the like.

  According to a second aspect of the present invention, the crescent bracket is cut out from a substantially rectangular metal plate, and has a front end frame piece portion, an upper frame piece portion, and a lower frame piece portion, and the front end side frame piece portion. The crescent lock according to claim 1, wherein a hook portion that engages with the crescent is formed on the inner side and a standing rib that is bent in a substantially L-shaped cross section is formed on the outer side.

  According to a third aspect of the present invention, the crescent bracket is cut out from the inside of a substantially rectangular metal plate, and has a front end frame piece portion, an upper frame piece portion, and a lower frame piece portion, and the upper frame piece portion. The crescent lock according to any one of claims 1 and 2, wherein planar ribs are formed on the surfaces of the lower frame piece part along the longitudinal direction of the member.

  As a fourth aspect of the present invention, standing ribs that are bent in a substantially L-shaped cross section are formed on the outer side of the upper frame piece, and are bent in a substantially L-shaped cross section on the outer side of the lower frame piece. The crescent lock according to claim 3, wherein the standing rib is formed.

  As the present invention according to claim 5, in the tip side frame piece portion, a flat rib is formed between the hook portion and the standing rib along the width direction of the frame piece portion. A crescent tablet according to any of the above is provided.

  As described above, according to the present invention, it is possible to reinforce the strength of the crescent bracket, and it is possible to obtain a solid crescent lock that is not unlocked even by prying with a bar or the like.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a crescent lock 1 according to the present invention, FIG. 2 is a side view and a front view of a crescent bracket 8, and FIG. 3 is a plan view thereof.

  As shown in FIG. 1, the crescent lock 1 includes a base metal 5 attached to the vertical shaft of the indoor shoji 2, and a crescent 7 attached to the base metal 5 via a crescent shaft 6 so as to be rotatable. And a crescent bracket 8 having a hook portion 8a that is attached to the outdoor shoji 3 and engages with the crescent 7.

  Then, the operation lever 7A formed integrally with the crescent 7 is picked, and the crescent 7 is rotated in a range of about 180 degrees, so that the wall height formed around the crescent 7 is gradually changed to a tapered shape. The annular peripheral wall 7B is engaged with and disengaged from the L-shaped hook portion 8a formed on the crescent bracket 8, and the window is locked or unlocked.

  In particular, in the present invention, the strength of the crescent metal fitting 8 is reinforced in view of the fact that burglar cases in which shojis are forcibly opened by bar or the like and invaded into the house are frequently occurring. Hereinafter, it will be described in detail based on FIG. 2 and FIG.

  The crescent bracket 8 is a member formed by processing a substantially rectangular metal plate. As shown in FIG. 2, the fixing portion 8A for the outdoor shoji 3 in which the screw holes 8b and 8b are formed and the crescent 7 are engaged. It is comprised from the bracket part 8B in which the hook part 8a for joining was formed.

  As shown in FIG. 3, a stepped portion 8C is formed at the boundary portion between the fixed portion 8A and the bracket portion 8B so that the bracket portion 8B is biased to the outdoor side, and is attached to the outdoor shoji 3, The hook portion 8 a, the deformation regulating member 9, which will be described later, and the standing rib 8 c do not contact or collide with the indoor shoji 2.

  In the bracket portion 8B, the inside is cut out, and a front end frame piece portion 8D, an upper frame piece portion 8E, and a lower frame piece portion 8F are formed so as to surround the cut out portion, and the front end side frame piece portion 8D is formed. A hook portion 8a that engages with the crescent 7 is formed continuously on the inner side of the hook portion, and a deformation restricting member 9 that restricts deformation of the hook portion 8a is provided at a position adjacent to the front end side of the hook portion 8a. ing.

  The deformation restricting member 9 prevents deformation by supporting the hook portion 8a on its back side when a large force in the falling direction is applied to the hook portion 8a due to the shoji being pry open by the bar. Although it does not matter in shape, it is desirable that it has substantially the same height as the hook portion 8a and is in contact with the proximal end portion of the hook portion 8a in the installed state. In this embodiment, a member having a button shape having a certain height is used.

  The shaft portion 9a is provided on one surface side, and the shaft portion 9a of the deformation restricting member 9 is passed through the shaft hole 8j formed in the crescent bracket 8, and the tip is crimped on the opposite surface side. It is permanently fixed.

  In addition, standing ribs 8c that are bent in a substantially L-shaped cross-section are formed continuously to the outer side of the distal end side frame piece 8D, and on the surfaces of the upper frame piece portion 8E and the lower frame piece portion 8F, Planar ribs 8e and 8f are formed along the longitudinal direction of the member by unevenness provided by pressing.

  The standing rib 8c is formed to extend to the upper region and the lower region of the distal end side frame piece portion 8D, and the planar ribs 8e and 8f are continuously formed on the distal end side frame piece 8D side, In the upper region and the lower region of the distal end side frame piece 8D, the standing rib 8c and the planar ribs 8e, 8f are formed with overlapping margins S, S. In the illustrated example, a flat rib 8g having irregularities is formed along the horizontal direction (width direction) between the hook portion 8a and the standing rib 8c at the center portion of the distal end side frame piece portion 8D.

  In the case of a conventional crescent bracket (see FIG. 6B) that does not have the upstanding ribs 8c and the planar ribs 8e and 8f, the shoji 2 and 3 are pry open with a bar to apply an excessive force F to the hook portion 8a. The upper frame piece portion 8E and the lower frame piece portion 8F are subjected to bending deformation along with the deformation of the hook portion 8a, and the upper region of the tip side frame piece portion 8D and The experiment revealed that the lower region was deformed so as to be twisted and the hook portion 8a was detached from the annular peripheral wall 7B of the crescent 7.

  Therefore, in the present crescent lock 1, a deformation restricting member 9 for restricting the deformation of the hook portion 8a is provided at a position adjacent to the distal end side of the hook portion 8a to prevent the hook portion 8a from being deformed. Further, by forming flat ribs 8e and 8f with irregularities on the surfaces of the upper frame piece portion 8E and the lower frame piece portion 8F, respectively, the sectional rigidity is enhanced and deformation due to bending is suppressed, and the front end side frame is also provided. By forming the standing rib 8c that bends in a substantially L-shaped cross section continuously from the outer side of the piece 8D, the cross-sectional rigidity of the distal end side frame piece portion 8D is increased, and bending deformation and torsion deformation are suppressed.

  Further, in the experiment in which the planar ribs 8e and 8f are formed linearly along the member longitudinal direction of the upper frame piece portion 8E and the lower frame piece portion 8F, the distal end side frame piece portion 8D, the upper frame piece portion 8E and the lower frame piece portion 8E A discontinuous portion of reinforcement, that is, an unreinforced portion that is not reinforced by the standing ribs 8c and the planar ribs 8e and 8f is formed at the joint portion with the frame piece portion 8F, and a large twist deformation occurs here. It was found that. Therefore, as described above, the standing rib 8c is formed to extend to the upper region and the lower region of the distal end side frame piece 8D, and the planar ribs 8e and 8f are continuously formed on the distal end side frame piece 8D side. The standing rib 8c and the planar ribs 8e and 8f are formed with overlap margins S and S in the upper region and the lower region of the distal end side frame piece 8D. As a result, there is no reinforcing discontinuity at the joint between the tip side frame piece 8D, the upper frame piece 8E, and the lower frame piece 8F, and the crescent lock 1 is unlocked even if the shoji 2 and 3 are pry open with a bar. It is now possible to reliably prevent this.

[Other examples]
(1) In the above embodiment, only the planar ribs 8e and 8f are formed on the upper frame piece portion 8E and the lower frame piece portion 8F as reinforcements. However, as shown in FIG. Standing ribs 8h bent in a substantially L-shaped cross section are formed on the outer side of the portion 8E, and standing ribs 8i bent in a substantially L-shaped cross section are formed on the outer side of the lower frame piece 8F. Good.

It is a perspective view of the crescent lock 1 concerning the present invention. The crescent socket 8 is shown, (A) is a side view, and (B) is a front view. FIG. The modification of the crescent receiving metal fitting 8 is shown, (A) is a front view, (B) is a plan view. It is a perspective view of the conventional crescent lock 50. FIG. It is a perspective view of the crescent receiving metal fitting 56. FIG. It is a perspective view which shows the deformation | transformation state of the crescent receiving metal fitting 56 when the shoji 2 and 3 are pry open.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Crescent lock, 2 ... Indoor shoji, 3 ... Outdoor shoji, 4 ... Locking side hardware, 5 ... Base hardware, 6 ... Crescent shaft, 7 ... Crescent, 7B ... Annular peripheral wall, 8 ... Crescent metal fitting, 8a ... Hook part , 8D: distal end side frame piece, 8E: upper frame piece, 8F: lower frame piece, 8c: upright rib, 8e, 8f: flat rib, 9: deformation regulating member

Claims (5)

A locking metal fitting that is provided with a crescent mounted rotatably and is fixed to the indoor shoji side, and a crescent socket metal fitting that is provided with a hook portion having a substantially L-shaped cross section to engage the crescent and is fixed to the outdoor shoji side. In the Crescent tablet
The crescent lock is provided with a deformation restricting member for restricting deformation of the hook portion at a position adjacent to the hook portion. The crescent bracket is cut out from the inside of a substantially rectangular metal plate, and has a tip side frame piece portion, an upper frame piece portion and a lower frame piece portion, and is engaged with the crescent on the inner side of the tip side frame piece portion. The crescent lock according to claim 1, wherein a hook portion is formed, and a standing rib that is bent in an approximately L-shaped cross section is formed on the outer side. The crescent bracket is cut out from the inside of a substantially rectangular metal plate and has a front end frame piece portion, an upper frame piece portion and a lower frame piece portion, respectively on the surfaces of the upper frame piece portion and the lower frame piece portion. The crescent tablet according to any one of claims 1 and 2, wherein planar ribs are formed along the longitudinal direction of the member. A standing rib that is bent in a substantially L-shaped cross section is formed on the outer side of the upper frame piece, and a standing rib that is bent in a substantially L-shaped cross section is formed on the outer side of the lower frame piece. Item 4. A crescent tablet according to item 3. The crescent lock according to any one of claims 1 to 4, wherein, in the distal end side frame piece portion, a flat rib is formed between the hook portion and the standing rib along the width direction of the frame piece portion.

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