JPH10292681A - Strike of door latch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable enhancing a driver's controllability and rationally combining each member into a grow guard. SOLUTION: A strike for a door latch has a grout guard 1 fitted into a recess 3 in the jamb 2 of a building. The strike includes a slide box 10 fitted into the grout guard 1 in such a way as to be movable relative to side walls 6a, 6b on the right and left of the grout guard 1 and provided at its open edge with engaging projecting pieces 13, 14 along the outward direction, the slide box 10 having a through hole 16 in its bottom wall 12e; a slide-box driving cam 30 interposed between the bottom wall 12e of the slide box 10 and the bottom wall 6e of the grout guard 1 and having in its center a driver engaging part 32 and an eccentric cam groove 31 in which an engaging projection 17 provided on the bottom wall 12e is engaged; and a mounting cover 20 secured to the jamb in such a way as to cover the grout cover 1 assembled into the recess 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical frame side door latch receiving bracket which engages with a door side dead bolt and a latch bolt (herein, collectively referred to as "door latch").

[0002]

2. Description of the Related Art Conventionally, an example of this type of bracket is described in Japanese Utility Model Publication No. 6-49780. The embodiment described in this publication basically has a troyoke (receiving case) fitted into a recess of a vertical frame of a building, and is fitted into the troyoke so as to be movable with respect to the left and right side walls of the troyoke. And, a slide box having an engagement projection on the outer edge at the opening edge and having a fitting hole in the bottom wall, interposed between the bottom wall of the slide box and the bottom wall of the troyoke, And, a moving disk for a slide box having an eccentric projection fitted on the fitting hole on one side upper surface,
And a mounting cover secured to the vertical frame to cover the troyoke incorporated in the recess.

[0003] In the above configuration, although there is an advantage that the number of constituent parts is small, when the slide box is moved with respect to the left and right side walls of the troyoke, the tip of the driver is moved to the eccentric projection of the moving disk. The driver had to move the driver so as to draw a trajectory while turning the driver and inserting the driver into the engaging groove formed on the slide box, thereby adjusting the horizontal movement of the slide box. .

Therefore, there is a problem that the driver must be carefully operated and fine adjustment of the slide box is not easy.

[0005] Further, the above configuration has an advantage that the combination of the respective members is easier than the other embodiments which require a spring member, but for example, a troyoke is previously placed in the recess of the vertical frame. After fitting, insert the moving disk into the bottom surface in the case portion of the troyoke, and then when trying to fit the eccentric projection of the moving disk to the fitting hole of the slide box,
Since the disc falls under its own weight below the slide box, it is practically difficult to combine both.

Therefore, in actuality, before fitting the troyoke into the dent of the vertical frame, the members (troyoke, moving disk, slide box) are arranged in a horizontal state and appropriately combined, and the combined state is set in the dent of the vertical frame. It is necessary to fit in. In this case, the mounting cover is finally fixed to the vertical frame, whereby the troyoke is fixed in the recess of the vertical frame. At this time, when the above members are combined, the pressing on the slide box is not performed. If the slide box moves in the forward direction with respect to the trojan fitted in the recess, there is a problem that the moving disk comes off the fitting hole of the slide box. Therefore, at present, a rational device is required for the combination of the members due to such inconvenience.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and a first object of the present invention is to provide an operability of a driver while making use of the advantage of the conventional embodiment of reducing the number of parts. Therefore, fine adjustment of the slide box can be easily performed. A second object is to be able to efficiently combine the constituent members. A third object is to prevent the slide box from swinging up and down during fine adjustment of the slide box. A fourth object is that the drive cam can be easily incorporated in the troyoke in particular.

[0008]

According to the present invention, a bracket for a door latch according to the present invention can move with respect to a trojan 1 fitted into a recess 3 of a vertical frame 2 of a building and left and right side walls 6a and 6b of the trojan. A slide box 10 which is fitted into the trowel so as to be able to be engaged, and which has engaging projections 13 and 14 on the opening edges in the outward direction and has a through hole 16 in a bottom wall 12e; A slide that is interposed between the bottom wall 12e and the bottom wall 6e of the trojan, and has, at the center, a driver engaging portion 32 and an eccentric cam groove 31 with which the engaging projection 17 provided on the bottom wall 12e engages. Box driving cam 30 and the recess 3
And a mounting cover 20 fixed to the vertical frame so as to cover the troyoke incorporated therein.

In the above construction, the engaging projection is provided on the left side wall 1.
The first engagement protrusion 13 extends from the edge of the right side wall 12b and projects rightward from the edge of the right side wall 12b. The one engaging protrusion 13 is a plurality of engaging claw pieces that slide in contact with each other while sandwiching the engaging edge portions 22 forming the central opening 21 of the mounting cover 20.

Further, in the above structure, the engaging portion 3 with which the tip of the driver engages is located at the center of the upper surface of the driving cam 30A.
A projection shaft 35 having 2A is provided, and the projection shaft 35 is fitted into the elongated hole 16A of the slide box 10A.

Further, in the above configuration, the troyoke 1B
A fitting hole 40 is formed in the bottom wall 6e of the case portion 6B, and the driving cam 30B is fitted into the fitting hole 40.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention shown in the drawings is attached to a recess 3 of a vertical frame 2 of a building in relation to a door latch (dead bolt, latch bolt) 50 on the door side. Will be described.

First, a troyoke is fitted into a recess 3 formed in a vertical frame 2 of a building (especially for doors). The trowel 1 is fixed in the recess directly through the fixing means 4 or through a mounting cover described later. The surface of the troyoke 1 has a rectangular opening 5, and a pair of mounting projections 7, 7 are provided at upper and lower opening edges of a case portion 6 which forms a recess inward from the opening 5. ing. Note that these mounting projections 7, 7 enter into the surface cutouts of the vertical frame 2 communicating with the recesses 3, and are flush with the surface of the vertical frame 2.

Referring to FIG. 1, the case portion 6 of the troyoke 1 will be described. 6a is a left side wall, 6b is a right side wall, 6c is an upper wall, 6d is a lower wall, and 6e is a bottom wall. Bottom wall 6
e is in contact with the inner surface of the bottom wall in the recess 3.

Next, 10 is the left and right side walls 6a of the troyoke 1,
6b is a slide box fitted into the troyoke 1 so as to be slidable with respect to 6b. The slide box 10 includes a case-like latch housing 12 having a rectangular opening 11 slightly smaller than the opening 5 of the trojan 1, and a plurality of engaging projections 13 extending from the opening edge of the latch housing 12 to the left and right. , 14.

Referring to FIG. 1, a description will be given of the latch housing portion 12 which is loosely fitted to the troyoke 1. The reference numeral 12a denotes a left side wall facing the left side wall 6a of the troyoke 1, and 12b
Is a right side wall facing the right side wall 6b of the troyoke 1, and
12c is an upper wall, 12d is a lower wall, and 12e is a bottom wall. When the slide box 10 is incorporated in the troyoke 1, a required space is formed between the bottom wall 12e and the bottom wall 6e of the troyoke 1, and a drive cam described later is slidably interposed in the required space. .

The engaging projections 13 and 14 are common in that they have a function of preventing the slide box 10 from rattling. However, a first projection protruding leftward (outward) from the edge of the left side wall 12a. The engaging projection 13 is divided into three parts for preventing vertical swinging, particularly during adjustment, and for convenience in mounting the slide box 10 to the trowel 1. The three engaging claws 13a, 13b, and 13c are slid while sandwiching (clamping) the engaging edges 22 forming the square central opening 21 of the mounting cover 20. Touch On the other hand, the right wall 12
The second engaging projection 14 which extends from the edge of b and projects rightward is formed into a single long plate. And
As shown in FIG. 4, the engaging projection 14 is formed in a gap formed between the edge of the right side wall 6 b of the trojanke 1 and the surface opening side of the recess of the vertical frame 2 and the inner wall surface of the mounting cover 20. 15. Therefore, the engaging projection 14 slides on the inner wall surface of the mounting cover 20 and the edge of the right side wall 6b of the trowel 1.

The engaging claw pieces 13a, 13b, 13
c is devised so as to be guided by the opening edge 22 of the mounting cover 20. In the present embodiment, for example, the opening edge 22 is a depressed guide groove 23, and the guide groove 23 has a central engaging claw 1
3b is engaged.

An elongated hole, which is an example of a through hole 16 for inserting a driver, is formed in the center of the bottom wall 12e of the latch accommodating portion 12 in the width direction. An appropriate portion away from the hole and the outer wall surface of the bottom wall 12e (the surface facing the bottom wall 6e of the troyoke 1)
Is provided with one engagement projection 17.

Reference numeral 30 denotes a bottom wall 12e of the slide box 10.
And a drive cam having an eccentric cam groove 31 interposed between the engaging projection 17 of the slide box 10 and interposed between the bottom wall 6e of the trowel 1 and the bottom wall 6e. The drive cam 30 is formed in a disk shape, and an engagement portion (an engagement groove, an engagement hole) 32 with which a distal end portion of the driver 51 is engaged is formed at a substantially central portion.

Although the eccentric cam groove 31 may be an arc-shaped or semi-circular eccentric groove, the eccentric groove is employed in this embodiment in consideration of the convenience of the combination of the members. .

In the above configuration, each member 1, 30, 1
The combination order of 0 and 20 will be described. First, the troyoke 1 is fitted into the recess 3 of the vertical frame 2 of the building. Next, the first engaging projection 13 of the slide box 10 is engaged with the engaging edge 22 of the mounting cover 20. At this time, the guide groove 23 of the mounting cover 20 is held so that the slide box 10 is sandwiched between the mounting cover 20 via the first engaging projection 13.
One (middle) engaging claw piece 13b is inserted into and engaged with the upper surface of the mounting cover 20, and the other (upper and lower) engaging claw pieces 13a and 13c are inserted into the inner wall surface side of the mounting cover 20. Thus, the slide box 10 is integrally combined with the mounting cover 20.

Next, before the latch housing 12 of the slide box 10 is fitted into the trowel 1,
Drive cam 3 through the eccentric cam groove 31
Hang 0. In this case, since the drive cam 30 is rotated to some extent by its own weight, the position of the drive cam 30 does not coincide with the opening 5 of the trocar 1. Then, while appropriately turning the drive cam 30 with a finger, align it with the opening 5 of the troyoke 1,
At the place where they match, the latch housing 12 of the slide box 10
Into the troyoke 1. Then, the upper and lower mounting projections 7 of the troyoke 1 are fitted flush with the surface cutout communicating with the recess 3 of the vertical frame 2. Then, the attachment cover 20 and the trowel 1 are fixed to the vertical frame 2 via the fixing means 4.

In the above configuration, the door latch 50
Slide box 1 to obtain a good engagement with
In order to adjust the position of the driver 0 relative to the left and right side walls 6a and 6b of the troyoke, the driver 51 is inserted into the through hole 16 of the slide box 10 from the central opening 21 of the mounting cover 20 and the tip of the driver is driven by the driving cam. 30 engaging parts 3
2 is engaged. When the driver 51 is rotated clockwise around the engaging portion 32 of the drive cam 30, the drive cam 30 rotates in the same direction as the driver 51 at that position. Then, due to the sliding contact between the engagement protrusion 17 of the slide box 10 and the eccentric cam groove 31 of the drive cam 30, the slide box 10 slides to the right side wall 6b of the toyoke as shown in FIG. At this time, the slide box 10 moves stably (without swinging up and down) via the first engagement protrusion 13 and the guide groove 23 of the mounting cover 20. Further, since the through hole 16 is a long hole, even if the driver 51 is left as it is, it does not hinder the movement of the slide box 10.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first embodiment, for example, the drive cam 30 is supported on the inner surface of the bottom wall 6e of the case portion 6 of the troyoke 1 so that the drive cam 30 can be easily incorporated into the troyoke 1. Two or more drive cam support protrusions may be provided.

In the following, another embodiment of the present invention will be described. In the description of the other embodiments, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and overlapping description will be omitted.

First, FIGS. 9 and 10 show a door latch receiving member according to a second embodiment. The feature of the second embodiment is that a projection shaft 35 having an engaging portion 32A at the center of the upper surface (front surface) of the driving cam 30A with which the tip of the driver engages.
And the projection shaft 35 is fitted into the elongated hole 16A of the slide box 10A.

With this configuration, when assembling the drive cam 30A into the trowel 1A, the drive cam 30A is attached in advance so as to adhere to the bottom wall 12e of the latch housing portion 12 of the slide box 10A. The box 10A and the mounting cover 20A can be assembled together and assembled into the troyoke 1A.

That is, when the drive cam 30A is attached to the bottom wall 12e of the latch housing portion 12 of the slide box 10A, the projection shaft 35 of the drive cam 30A fits into the elongated hole 16A of the slide box 10A, while the slide box The engagement projection 17 of 10A is provided on the eccentric cam groove 3 of the drive cam 30A.
1, the driving cam 30A looks like it is supported at two points. Therefore, the drive cam 30A does not easily fall from the slide box 10A, and each member can be rationally combined.

FIGS. 11 and 12 show a third embodiment of a door latch receiving member. The feature of the third embodiment is that a large-diameter fitting hole 40 is formed in the bottom wall 6e of the case portion 6B of the troyoke 1B, and the drive cam 30B is fitted into the fitting hole 40. In this case, the same is true even if a fitting recess for the driving cam 30B is formed in the bottom wall 6e of the case portion 6B.

With this configuration, when assembling the components, first, the trocar 1B is fitted into the recess 3 of the vertical frame 2,
Next, the drive cam 30B is fitted into the fitting hole 40 of the trocar 1B. In this case, since the outer diameter (diameter) of the driving cam 30B is designed in consideration of the diameter of the hole of the fitting hole 40, the outer peripheral wall of the driving cam 30B is formed with the fitting hole 4 of the trocar 1B.
0, and does not easily fall off the bottom wall 6e of the trowel 1B.

Therefore, the engaging edge 2 of the mounting cover 20B
2, the first engaging projection 13 of the slide box 10B is engaged, and the slide box 10B is fitted into the case portion 6B of the troyoke 1B while holding the mounting cover 20B. Therefore, there is an advantage that each member can be rationally combined even with this configuration.

[0033]

As is clear from the above description, the present invention has the following effects. (1) An engagement portion for a driver is provided at a central portion, and
Since the slide box drive cam is provided with an eccentric cam groove that engages with the engagement protrusion on the bottom wall of the slide box on the upper surface, the operability of the driver is improved, and this allows fine adjustment of the slide box. It can be done easily. (2) According to the second aspect of the present invention, the constituent members can be efficiently combined, and the slide box does not swing up and down when finely adjusting the slide box. (3) According to the third and fourth aspects of the present invention, when the drive cam is incorporated in the troyoke, the drive cam does not easily come off the slide box or the troyoke. Therefore, each member can be rationally combined in the troyoke.

[Brief description of the drawings]

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,
FIGS. 11 and 12 are explanatory views showing a third embodiment of the present invention.

FIG. 1 is an exploded perspective view of a first embodiment.

FIG. 2 is an explanatory view from the front of a use state.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is an exploded perspective view of a main part (drive cam, trowel).

FIG. 6 is an exploded perspective view of main parts (mounting cover, slide box).

FIG. 7 is an explanatory view of a main part from the front.

FIG. 8 is an explanatory view in which a slide box is moved by a driver based on FIG. 7;

FIG. 9 is an exploded perspective view of the second embodiment.

FIG. 10 is an explanatory diagram of a main part.

FIG. 11 is an exploded perspective view of the third embodiment.

FIG. 12 is an explanatory view of a main part.

[Explanation of symbols]

1, 1A, 1B ... Troyoke, 2 ... vertical frame, 3 ... recess, 4 ...
Fixing means, 5: opening, 6, 6B: case part, 7: mounting projection, 10, 10A, 10B: slide box, 12
.., Latch housing portions, 6e, 12e, bottom wall, 13, 14, ..., engagement projections, 13a, 13b, 13c, engagement claw pieces, 16, 1
6A: Through-hole, 17: Engagement projection, 20, 20A, 20B
... Mounting cover, 21 ... Central opening, 22 ... Edge, 23
... Guide grooves, 30, 30A, 30B ... Driving cams, 31 ... Eccentric cam grooves, 32, 32A ... Engagement parts, 35 ... Projection shafts, 40
... fitting hole, 41 ... inner peripheral wall, 50 ... door latch, 51 ...
driver.

Claims (4)

[Claims] 1. A troyoke 1 fitted in a recess 3 of a vertical frame 2 of a building, and an open end fitted into the troyoke so as to be movable with respect to left and right side walls 6a, 6b of the troyoke. Engagement projections 13 and 14 are provided on the edges in the outward direction, and a slide box 10 having a through hole 16 in a bottom wall 12e is interposed between the bottom wall 12e of the slide box and the bottom wall 6e of the troyoke. A slide box drive cam 30 having a driver engagement portion 32 at the center and an eccentric cam groove 31 with which the engagement protrusion 17 provided on the bottom wall 12e engages; And a mounting cover fixed to the vertical frame so as to cover the troyoke incorporated in the door latch. 2. The engagement projection according to claim 1, wherein the engagement projection is connected to an edge of the left side wall 12a and protrudes leftward, and is connected to an edge of the right side wall 12b. And a second engaging projection 14 protruding rightward. The first engaging projection 13 sandwiches an engaging edge 22 forming a central opening 21 of the mounting cover 20. A plurality of engaging claw pieces 13a, 13b, 13c that slide in contact with each other. 3. The engaging portion 32 according to claim 1, wherein a front end portion of a driver is engaged with a central portion of an upper surface of the driving cam 30A.
A bracket for a door latch, wherein a projection shaft 35 having an A is provided, and the projection shaft 35 is fitted into the elongated hole 16A of the slide box 10A. 4. The driving cam 3 according to claim 1, wherein a fitting hole 40 is formed in the bottom wall 6e of the case portion 6B of the trocar 1B.
0B is fitted in the fitting hole 40. A metal latch for a door latch.