JP2005200881A - Lock for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a lock for a sliding door capable of sufficiently protecting the left-right edge sections of an opening window for a strike from a violent destructive action by a drill, a crowbar or the like used by a thief. <P>SOLUTION: The lock for the sliding door has an external case member 3 installed to the external sliding door, an internal case member 13 mounted on the internal sliding door 11 and an internal lock mechanism 14 being fitted to the internal case member 13 and having a hook piece. In the lock for the sliding door, a reinforcing plate body for the strike is interiorly finished fixedly into an internal space between the case body 4 of the external case member 3 having the function of a bracket and the strike so as to support the left-right edge sections of the opening window 38 for the strike by left-right leg sections 45c and 45c. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lock for a sliding door such as a door lock and a sliding door lock.

  In general, the lock for the sliding door is made to project the sickle piece from the thumb turn side lock body provided on the sliding door, and to engage the strike (engagement plate) of the receiving bracket provided on the door frame or the counterpart sliding door. Then, it is impossible to open the sliding door. Conventionally, a receiving metal fixture constituting a sliding door lock called a door lock, a sliding door lock, etc. has a recessed troyoke, and covers the troyoke and has a sickle entry hole (opening window). It consists of strikes.

  By the way, at the time of locking, since the sickle piece repeatedly engages with the back edge of the strike, in the cited document 1, the engagement strength with the kama lock, the maintainability at the time of deterioration, and the crime prevention are improved. A sliding door bracket has been proposed. In the metal fitting of the cited document 1, the troyoke, the hook engaging metal, and the strike are formed separately, and the hook engaging metal is accommodated in the recess of the troyoke and the strike is fixed together with the troyoke. For example, it is attached to a vertical frame.

  Therefore, in cited document 1, although each member has an advantage that it can be manufactured with an optimal material suitable for the use of the member, or finish, the left and right edges of the opening window of the strike are U-shaped projections. Since it was not reinforced by a hook engaging bracket having an engaging portion, it was not perfect for violent destruction such as drills and bars used by thieves.

Further, Patent Document 2 proposes a configuration in which a plate-like backup member is disposed in the troyoke via a fixing means in order to reduce the bending moment generated in the upper portion of the strike engaging portion of the metal fitting. ing. However, Patent Document 2 also has a problem to be solved similarly to Cited Document 1 because the left and right edges of the opening window of the strike are not reinforced.
Japanese Patent Publication No. 2002-313116 Japanese Patent Publication No. 2002-201829

  The first object of the present invention is to sufficiently protect the left and right edges of the opening window of the strike against violent destructive acts such as drills and crowbars used by thieves, in view of the problems with conventional locks for sliding doors. It is to propose a lock for sliding doors. The second purpose is to sufficiently exhibit the protective function of the reinforcing plate. For other incidental purposes, to propose a lock for sliding doors with a strong outer case member, for sliding doors that are less likely to be attacked through the gap between the outer peripheral surface of the intermediate part of the sickle piece and the edge of the opening of the front plate Such as proposing a lock.

  The sliding door lock of the present invention includes an outer case member 3 attached to the outer sliding door, an inner case member 13 attached to the inner sliding door 11, an inner locking mechanism 14 provided on the inner case member 13 and provided with a sickle piece. In the interior of the case body 4 and the strike (7.7A) of the outer case member 3 having the function of the receiving bracket, at least the left and right edges of the opening window 38 of the strike Left and right feet 45c. The reinforcing plate for strike (45.45A) is fixedly installed so as to be supported by 45c.

  In the above configuration, the reinforcing plate (45.45A) is a hard protector that is carburized and hardened. Further, the reinforcing plate body includes a waist portion 45a joined to the inner wall surface of the vertical wall 4c at the back of the case body 4, a pair of left and right leg portions 45b and 45b extending from the left and right sides of the waist portion 45a to the strike 7 side, respectively. A pair of leg portions 45c extending from the tip end portions of the plate-like leg portions 45b, 45b and surface-bonding to the back surface of the edge portion of the opening window 38 of the strike 7. 45c.

(1) The invention described in claim 1 can sufficiently protect at least the left and right edges of the opening window of the strike against violent destructive acts such as drills and bars used by thieves.
(2) The invention described in claim 3 can sufficiently exert the protective function of the reinforcing plate.
(3) The invention according to claim 4 is hardly attacked from a gap between the outer peripheral surface of the intermediate portion of the sickle piece and the edge of the opening of the front plate.

  The first embodiment of the present invention shown in FIGS. 1 to 8 will be described below. The lock X of the first embodiment is attached to the sliding door, but may be appropriately attached to the sliding door in general.

  X is a sliding door lock, 1 is an outer sliding door, 2 is an outer casing, 3 is an outer case member having a strike function, 11 is an inner sliding door, 12 is an inner casing, and 13 is an inner casing member. First, these basic components will be mainly described, and then the strike reinforcing plate 41 of the outer case member 3 which is a main part of the present invention will be described.

(1) Lock X for sliding door
As shown in FIG. 1, the sliding door lock X of the present embodiment includes at least an outer case member 3 attached to the outer casing 2 of the outer sliding door 1, an inner case member 13 attached to the inner casing 12 of the inner sliding door 11, The inner case member 13 is provided with an inner lock mechanism 14 provided with a sickle piece. The outer case member 3 does not have an outer lock mechanism such as a cylinder lock or a power transmission member. Therefore, the outer case member 3 of the present embodiment is a sickle piece receiving fitting provided with a trojan, a strike, and the like.

(2) Outer case member 3
The outer case member 3 is fixed to the outer casing 2 via a case body 4 having one side opening that is housed in the opening of the outer casing 2 and a hard defense back plate 5 on the outdoor side end face or wall surface of the casing body 4. And a strike 7 that is positioned on the inner sliding door 11 side of the case body 4 and is fixed to the opening end face of the case body 4. The case body 4, the hard defense back plate 5, the outer decorative plate 6, and the strike 7 constituting the outer case member 3 constitute a single unit that can be attached to the outer sliding door 1 (outer casing 2) regardless of its shape. .

  In this embodiment, the hard defense back plate 5 and the strike 7 are carburized and quenched. The outer decorative plate 6 has horizontal female screws 6a, 6a at the upper and lower ends of the inner wall surface, and the fixing tools 8, 8 penetrating through the mounting holes at the upper and lower ends of the strike 7 into the horizontal female screws 6a, 6a. Screw together. The structure of the strike 7, the strike reinforcing plate body fixedly mounted in the case body 4, the strike fixing means, and the like will be described later.

(3) Inner case member 13
On the other hand, the inner case member 13 includes a case main body 15 housed in the opening of the inner casing 12, a hard defense front plate 16 on the outdoor side end surface or wall surface of the case main body 15, and an end surface or wall surface on the indoor side of the case main body 15. And an inner cover (commonly known as “inner escation”) 18 fixed through a fixing tool 17. The case body 15, the hard defense front plate 16, and the inner cover 18 constituting the inner case member 13 constitute a single unit that is attached to the inner sliding door 11 (inner collar 12) regardless of its shape. In this embodiment, the hard defense front plate 16 is also carburized and quenched.

  Accordingly, a sickle piece opening 19 through which a sickle piece 23 described later enters and exits is formed at the lower end of the inner case member 13 (the hard defense front plate 16 and the case main body 15). The opening 19 is rectangular.

  The inner cover (inner escation) 18 has horizontal female threaded rods 18a and 18a at the upper and lower ends of the inner wall surface, and the horizontal female threaded rods 18a and 18a penetrate through the mounting holes at the upper and lower ends of the front plate 16. The fixing tools 20 and 20 to be screwed together.

(4) Inner lock mechanism 14
The inner lock mechanism 14 moves up and down by an operating portion (a thumb turn knob member in this embodiment) 21 that is slidable in the vertical direction at least in the center of the inner cover 18 and the operating force of the operating portion 21. An operation plate 22 having an appropriate shape provided in the case body 15 and a sickle piece 23 pivotally supported at one end of the operation plate 22 are provided.

(5) sickle piece 23
The sickle piece 23 is pivotally supported by a fixed support shaft 24 that is horizontally installed on the case body 15, and has a T-shaped engagement hole 26 with which the operation shaft 25 of the operation plate 22 is engaged. An end portion 23a, an intermediate portion 23b connected to the wide rear end portion 23a in a fan shape and having an arc-shaped outer peripheral surface 27 on an arc centered on the fixed support shaft 24, and an intermediate portion 23b. And a fingertip-shaped tip 23c having an arcuate outer peripheral surface 28 that is continuous with the arcuate outer peripheral surface 27 with the same curvature (including the case where the arcuate outer peripheral surface 27 is substantially the same).

  Accordingly, the sickle piece 23 does not substantially form a gap between the left and right edges 19a and 19a of the opening 19 of the hard defense front plate 16 and the left and right engaging pieces 29 and 29 as shown in FIG. A total of four hook pieces are integrally joined to each other. Further, the arc-shaped outer peripheral surface 27 of the intermediate portion 23b of the sickle piece 23 is formed so as not to generate a substantially gap with one edge portion (lower edge portion in FIG. 2) 19b of the opening 19 during locking. Here, “no gap” means the gap that the drill or bar used by the thief cannot easily insert. Therefore, for example, when there is a gap of 5 mm or 6 mm between the arc-shaped outer peripheral surface 27 of the intermediate portion 23 b of the sickle piece 23 and the edge 19 b of the opening 19 of the front plate 16, the tip of the drill or bar However, in such a case, it is not said that no gap is formed. However, for example, about 2 mm or 3 mm is acceptable.

(6) Click spring and spring receiver The sickle piece 23 of this embodiment includes a click spring 31 and a spring mounting shaft 32. Two intermediate engaging pieces 30, 30 interposed between the left and right engaging pieces 29, 29 of the sickle piece 23 are provided with a rear end portion 23 a having a shaft hole 33 for a fixed shaft and an engaging hole 26. Absent. That is, the rear end portion 23a of the intermediate hook piece 30 is appropriately cut.

  Therefore, a support hole 34 for the spring mounting shaft 32 is formed at the boundary portion between the rear end portion 23a and the intermediate portion 23b of the left and right engaging pieces 29, 29, and the spring mounting shaft is inserted into the support hole 34. A click spring 31 is wound around 32, with one end 31 a being in pressure contact with the intermediate hooking piece 30 and the other end 31 b being in pressure contact with the operating shaft 25.

(7) Strike 7
One side of the long box-like case body 4 of the outer case member 3 has an opening 36 as shown in FIG. A vertically long strike 7 is fixedly attached to the opening end surface 36 a of the case body 4 via a strike fixing means 50. When the strike 7 is fixed to the opening end surface 36a, both end portions having the through holes 37.37 for the fixing tool 8 protrude from the upper wall 4a and the lower wall 4b of the case body 4 as shown in FIG.

  Thus, reference numeral 38 denotes an opening window that is punched and formed at a portion near one end of the strike 7, and inclined protrusions 39.39 that are bent inward are provided on the left and right edges forming the opening window 38. It has been. The pair of left and right projecting pieces 39.39 are opposed to a "C" shape so that the sickle piece 23 rotating in the hooking direction can be caught during locking. In addition, a recess 41.41 having a pair of left and right through small holes 40.40 is formed in a portion of the strike 7 near the upper and lower through holes 37.37.

(8) Strike reinforcement plate body The strike reinforcement plate body 45 that reinforces the edge of the opening window 38 of the strike 7 is separate from the strike 7 in this embodiment, and the upper and lower end surfaces are formed in a “hat shape”. Has been. The reinforcing plate body 45 of the present embodiment is a hard protector that has been carburized and quenched.

  5 is a perspective view including the reinforcing plate 45, FIG. 6 is a front view of the case body 4 as viewed from the opening end face 36a side, FIG. 7 is a plan view based on the front view, and FIG. 8 is a line AA in FIG. It is sectional drawing. The reinforcing plate body 45 will be described as an example of a human body waist, legs, and feet.

  With reference to FIG. 5, 45 a is a trapezoidal plate-like waist, and the waist 45 a is surface-bonded to the inner wall surface of the vertical wall 4 c at the back of the case body 4. The waist portion 45 a has a fixing tool mounting hole 46 that matches a mounting hole formed in the hard defense plate 5 and the outer decorative plate 6 at the center.

  45b and 45b are a pair of left and right plate-like leg portions that extend orthogonally from the left and right sides of the waist portion 45a to the strike 7 side. These plate-like leg portions 45b and 45b are inclined to face each other in a "C" shape. ing. The inclination angles of the plate-like leg portions 45b and 45b correspond to the inclined protrusions 39.39 of the strike 7. When the members are joined, the plate-like leg portions 45b, 45b of the reinforcing plate 45 are arranged to sandwich the inclined protrusions 39.39 in a surface contact state, so that the inner wall surfaces of the plate-like leg portions 45b, 45b are inclined protrusions. It makes surface contact with the wall surface of the piece 39.39. 45c. 45c is a pair of left and right plate-like foot portions that extend orthogonally outward from the tip portions of the plate-like leg portions 45b, 45b. These left and right plate-like foot portions 45c. 45c is surface-bonded to the edge of the opening window 38 of the strike 7 (in the present embodiment, around the inclined protrusion 39.39). Reference numeral 47 denotes a fixing tool for the reinforcing plate 45.

  The plate-like foot portion 45c. Although 45c is formed in the shape of a rectangle with a slight inclination, the shape and the inclination angle can be arbitrarily changed. Therefore, in order to achieve the object of the present invention, for example, the plate-like foot portions 45c. 45c may be formed annularly or annularly so as to be able to surround the entire periphery of the inclined protrusion 39.39.

(9) Strike Fixing Means In this embodiment, the strike fixing means 50 is fixed to the upper wall 4a and the lower wall 4b of the case body 4 and has a pair of upper and lower fixing blocks 50a. 50a and their fixed blocks 50a. 50a, and a plurality of strike male screws 52.52 that are respectively screwed into the female screws 51.51.

  The lock X of the first embodiment of the present invention is attached to the sliding door, but may be appropriately attached to the sliding door in general. For example, when the lock X is a door lock, the case main body of the outer case main body is incorporated in the door frame, and the strike reinforcing plate is fixedly provided in the case main body (in this case, the outer decorative plate). Is not required).

  Further, the outer case member 3 of the first embodiment does not have an outer lock mechanism such as a cylinder lock, a power transmission member, and a rotary lock piece. A power transmission member including a lock, a pinion fixed to the output shaft of the cylinder lock, and a rack vertically disposed in the case body 4 so as to mesh with the pinion, and an appropriate portion of the power transmission member An outer lock mechanism may be provided that includes a fixed projection shaft and an engagement hole that engages with the projection shaft and includes a rotary locking piece that engages with the inner case member. In the case of this embodiment, it is necessary to provide an opening through which the rotary locking piece enters and exits at the opposing portion of the strike 7 of the outer case member 3 and the front plate 16 of the inner case member 13. It is desirable to appropriately form or provide a protective wall so that tools such as a drill and a bar do not enter.

The operation plate 22 of the inner lock mechanism 14 of the inner case member 13 moves up and down by the operation force of the operation member 21, but may be replaced with an inner cylinder lock depending on the mounting specifications of the sliding door, the lock, the operation member, and the like. it can. Furthermore, the upper and lower end surfaces of the main reinforcing plate 45 are formed in a “hat shape”, but it is sufficient that at least the upper end surface is formed in a “hat shape”.
Next, a second embodiment will be described. In the description of the second embodiment, the reference numerals of the first embodiment are used for convenience in order to avoid redundant description. In the second embodiment, the plate-like foot portion 45c. The difference is that 45c is integrally provided on the rear surface of the edge of the opening window 38 of the strike 7A. The reinforcing plate body 45 of the first embodiment is fixed to the outer case member 3 through a fixing tool 47 that passes through the attachment hole 46 and is screwed to the case main body 4 or the outer decorative plate 6. The reinforcing plate body 45A of the embodiment is fixedly provided in advance on the rear surface of the edge of the opening window 38 of the strike 7A by a welding or locking structure.

  Therefore, the hard reinforcing plate 45A subjected to carburizing and quenching according to the second embodiment does not require a fixing member or a mounting hole for the reinforcing plate as in the first embodiment. In short, the strike reinforcing plate (45.45A) is fixedly installed in the internal space of the case body 4 and the strike (7.7A), and the edge of the opening window 38 of the strike can be easily formed by a tool. Left and right feet 45c. It may be supported by 45c.

  With this configuration, the same operation and effect as in the first embodiment can be obtained, and positioning and fixing work of the reinforcing plate body can be omitted when the lock X is attached. There is an advantage that the outer case member 3 can be easily fixed.

  INDUSTRIAL APPLICABILITY The present invention is used for locks for sliding doors such as sliding doors, draw doors, and door-end types that collide with door frames.

1 to 8 are explanatory views showing a first embodiment of the present invention. 9 and 10 are explanatory views showing a second embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. The schematic cross-section explanatory drawing of the principal part. Explanatory drawing from the front of a sickle piece. Explanatory drawing from the left side based on FIG. FIG. The front view of a reinforcement board. The top view based on the front view of a reinforcement board. AA line sectional view of Drawing 6. Overall schematic cross-sectional explanatory drawing of the second embodiment. FIG.

Explanation of symbols

X: Lock for sliding door, 1 ... Outer sliding door, 2 ... Outer casing, 3 ... Outer case member, 4 ... Case main body, 4a ... Upper wall, 4b ... Lower wall, 4c ... Vertical wall, 5 ... Hard defense back plate, 6 ... outer decorative plate, 7, 7A ... strike, 8, 17, 20 ... fastener, 11 ... inner sliding door, 12 ... inner casing, 13 ... inner case member, 14 ... inner locking mechanism, 15 ... case body, 16 ... front Plate, 18 ... Inner cover, 19 ... Opening for sickle piece, 19a ... Left and right edges, 19b ... One edge, 21 ... Operation member, 22 ... Actuation plate, 23 ... sickle piece, 23a ... Wide rear end, 23b ... intermediate portion, 23c ... fingertip tip portion, 24 ... fixed support shaft, 25 ... acting shaft, 26 ... engagement hole, 27 ... arc-shaped outer peripheral surface of the intermediate portion, 28 ... arc-shaped outer peripheral surface of the tip portion, 29 ... left and right 30 ... intermediate engagement piece 31 ... click spring 32 ... spring mounting shaft 36 ... opening 37 ... through Hole, 38 ... Opening window, 39 ... Projection piece, 40 ... Through hole, 41 ... Recess, 45, 45A ... Reinforcing plate body, 45a ... Lumbar part, 45b ... Leg part, 45c ... Foot part, 47 ... Fastener, 50 ... Strike fixing means, 51 ... Female screw, 52 ... Male screw.

Claims (5)

Before the sliding door lock provided with the outer case member 3 attached to the outer sliding door, the inner case member 13 attached to the inner sliding door 11, and the inner locking mechanism 14 provided on the inner case member 13 and provided with a sickle piece. In the inner space between the case body 4 and the strike (7.7A) of the outer case member 3 having the function of the receiving bracket, at least the left and right edges of the strike opening window 38 are connected to the left and right foot portions 45c. A lock for a sliding door, wherein a strike reinforcing plate (45.45A) is fixedly mounted so as to be supported by 45c. The sliding door lock according to claim 1, wherein the reinforcing plate (45.45A) is a hard protector that is carburized and hardened. In claim 1, the reinforcing plate body includes a waist portion 45a joined to the inner wall surface of the vertical wall 4c at the back of the case body 4, and a pair of left and right legs 45b extending from the left and right sides of the waist portion 45a to the strike 7 side, 45b and a pair of foot portions 45c. A sliding door lock comprising 45c. In claim 1, the intermediate portion 23 b of the sickle piece 23 is formed in a slightly fan shape from the wide rear end portion 23 a having the shaft hole 33 and the engagement hole 26, and is centered on the fixed support shaft 24. An arcuate outer peripheral surface 27 is provided on the arc, and the sickle piece 23 does not generate a substantially gap between the arcuate outer peripheral surface 27 and the sickle opening edge 19b of the front plate 16 of the inner case member when locked. The sliding door lock is characterized by being pivotally supported. The sliding door lock according to claim 1, wherein the outer sliding door 1 is a door frame, and the inner sliding door 11 is a sliding door for a door lock that collides with the door frame.

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