JP2003035061A - Locking apparatus for window paper screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking apparatus for a window paper screen, which allows a locking rod, such as a latch bolt or a dead bolt, to automatically protrude when the window paper screen is closed. SOLUTION: According to the locking apparatus, a latch (5) is arranged in a main body (1) thereof, which is energized by a spring (10) in a protruding direction. The apparatus includes a stopper lug (16) which is swayably arranged therein, and when the latch (5) assumes a receding position, an engaging portion (15) of the stopper lug (16) engages with a hook portion (14) of the latch (5) to hold the latch in the receding position. The stopper lug (16) has an operating portion (22) which extends toward a door stop of a window frame. When the window paper screen (2) is closed, the operating portion (22) abuts on the door stop (26) of the window frame (21), and the stopper lug (16) is rotated to detach the hook portion (15) from the latch (5), whereby the latch (5) protrudes due to the operation of the spring (10).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a window shoji, such as an opening window, a projecting window, a sliding window, etc., in which one end of the window shoji is supported and opened by a support fitting.

[0002]

2. Description of the Related Art As a locking device for window doors such as hinged windows and hinged doors, a manual locking device is provided in which a locking rod such as a latch or dead bolt is provided with a knob for locking and unlocking by hand. There is known an automatic latch device that is biased by a spring so that the latch always protrudes, then automatically engages the latch at the closed position to lock it, and then manually returns the latch to unlock it. ing. The manual locking device is troublesome to handle because the locking rod has to be manually operated each time the window sliding door is opened and closed. In addition, the automatic latch device is convenient for locking because the tip of the latch is always protruding, but a part of the window frame is protruding in front of the seat, and other obstacles are provided. If so, the tip of the latch cannot hit those obstacles to open or close the window shoji.

[0003]

The problems to be solved by the present invention are as follows.
When opening and closing the window shoji so that it can be opened and closed without hindrance, the tip of the locking rod such as the latch does not project, and the locking mechanism of the window shoji can be locked automatically by projecting the locking rod in the closed position. Is to provide.

[0004]

According to the present invention, a lock rod is provided in the main body so as to be able to move in and out, and the lock rod is urged toward the projecting position to hold the lock rod in the retracted position. Forming a stopper piece having a locking portion that engages with the lock rod, and hitting the door stop portion of the window frame when the window shovel moves to the closed position, in a direction to disengage the lock portion from the lock rod. A locking device for a window shoji is provided in which the stopper piece is provided with an action portion extending in the direction toward the door stop portion so as to move the stopper piece.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention can be applied to a window door, a sliding window, and other window locking devices for windows, and the locking rod used for locking can also be applied to latch bolts and dead bolts. 1 to 3 show an embodiment of a locking device using a latch. In the figure, the body (1)
Is a mounting leg (3) for mounting on the frame of the window shoji (2)
And has a storage part (4) formed therein, and the storage part (4)
A latch (5) is inserted in and out of the body, and a tip (6) of the latch (5) protrudes from the opening (7) of the accommodating portion to the outside of the main body or the tip (6) is opened. It can be retracted so as not to project from (7).

The latch (5) has a knob (9) protruding from the operation window (8) formed on the main body (1) on the front surface, and is biased by a spring (10) toward the protruding position, The base of the knob projects to a position where it abuts the hole edge of the operation window (8). The back surface (11) of the latch (5) is in sliding contact with the back plate (13) fixed to the main body (1) with screws (12).

Within the body (1) is the latch (5).
A stopper piece (16) having an engaging portion (15) at an inner end for engaging with a latching portion (14) of the latch so as to hold the lever in a retracted position is swingably provided (Fig. 3). (A)). The stopper-piece
(16) is pivotally attached to the side plate (17) of the back plate (13) by a pin (18), and the locking portion (15) is inserted into the through hole (19) of the back plate (13). Are formed. In the embodiment shown in the drawings, the engaging portion (15) is formed in a claw shape, and the latch engaging portion (14) is formed into a concave hole into which the engaging portion (15) is inserted. pin
A torsion spring (20) provided around (18) causes the stopper piece (1) to move in the direction in which the claw of the engaging portion (15) enters the recess hole.
6) is biased, and reinforcing ribs (16a) are formed at appropriate portions.

The structure of the hooking portion (14) and the locking portion (15) may be any structure as long as it has a function of holding the latch (5) in the retracted position. Instead of the recessed hole, a projection or a step may be provided on the back surface of the latch, or the stopper piece may be linearly moved back and forth to be engaged.

At the outer end of the stopper piece (16), when the window screen (2) is moved to the closed position, it hits the window frame (21) and the locking portion (15) and the latch (5). An action portion (22) is provided so that the latch piece (5) can be projected by moving the stopper piece (16) in the direction of disengaging the latching portion (14) (Fig. 3 (B)). )). The action portion (22) is formed by bending in a substantially L shape so as to extend in the direction of the door stop portion of the window frame, and preferably holds the latch in the retracted position as shown in FIG. 3 (A). While it is inserted into the notch (23) formed in the small edge portion of the window shoji and its tip projects toward the facing surface side of the window shoji, the notch (23) is not necessarily provided.
Further, a plastic cap (24) is fitted on the acting portion (22) so as not to damage the window frame or the like.

For example, as shown in FIG. 4, the locking device is attached to the free end side of the window shovel (2) pivotally attached to the window frame (21) at one end by a hinge (25). ) Is provided with a door stop (26) for stopping the window shoji (2) in the closed position. Further, a groove frame is provided on the front side of the door contact portion (26).
(27) is provided, but the tip of the groove frame (27) is projected inward for functional reasons, and when the latch of the locking device is projected, the tip of the latch is moved to the groove. The window shoji cannot be opened or closed by hitting the frame (27).

As shown in FIG. 4A, when the window shovel (2) is open, the latch (5) is in the retracted position and is held by the stopper piece (16). Three
(A)). Therefore, even if the window shovel (2) is rotated in the direction of the arrow (28), there is no risk that the latch (5) will hit the groove frame, and the window shoji can be closed without trouble.

As shown in FIG. 4 (B), when the window screen (2) is rotated to the closed position, the action portion (2) of the stopper piece (16).
2) hits the door stop (26), the stopper piece (16) is rotated, and the engagement between the locking portion (15) and the latching portion (14) is released,
The latch (5) projects by the action of a spring (10), and the tip (6) of the latch engages with a receiving hole (29) formed in the window frame (21) and can be locked automatically (Fig. 3). (B)). Window shoji (2)
To open the door, you can unlock it by moving the knob (9) in the direction of the arrow (30) with your hand, and when you rotate the window shoji with the knob, the action part separates from the door stop and the stopper −
Since the locking portion (15) of the piece engages with the hooking portion (14), the latch is held in the retracted position by the stopper piece (16), and the window shoji (2) can be opened without any trouble. .

[0013]

The present invention is constructed as described above, and when the locking rod such as the latch urged in the protruding direction is held in the retracted position by the stopper piece and the window screen is closed, the door frame door is stopped. Since the action portion is formed on the stopper piece so as to move the stopper piece against the portion and the action portion is provided in the direction of the door stop, the tip of the lock rod and the action portion are opened and closed when opening and closing the window shoji. You can prevent it from protruding outward from the free end side of the window shoji, and you can open and close the window shoji without obstacle even if obstacles are provided in the window frame,
When the window sliding door moves to the closed position, the action piece hits the door stop portion of the window frame, the engagement between the stopper piece and the locking rod is disengaged, and the locking rod moves to the projecting position to lock automatically. It can also be used for various types of hinged windows and hinged doors.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view.

FIG. 3A is a cross-sectional view in a state in an open position and FIG. 3B in a state in a closed position.

FIG. 4 is an explanatory view showing a usage state, (A) showing a state where a window shoji is opened, and (B) showing a state where the window shoji is closed.

[Explanation of symbols]

1 body 2 window shoji 5 latch 8 operation window 9 knobs 10 springs 13 Back plate 14 Hook 15 Locking part 16 Stopper piece 21 window frame 22 Working part

Continued front page    (72) Inventor Yukio Katogi             3-37-38, Kuma Sakumacho, Chiyoda-ku, Tokyo             No. Nakanishi Sangyo Co., Ltd. (72) Inventor Rie Iwate             3-37-38, Kuma Sakumacho, Chiyoda-ku, Tokyo             No. Nakanishi Sangyo Co., Ltd. (72) Inventor Toshihiko Izumiyama             1-11-1 Osaki, Shinagawa-ku, Tokyo Shin Nikkei             Within the corporation

Claims (3)

[Claims] 1. A lock rod is provided so as to be able to move in and out of the main body, and a locking portion is provided to urge the lock rod toward a projecting position and engage the lock rod so as to hold the lock rod in a retracted position. Forming a stopper piece having the door so as to move the stopper piece in such a direction as to hit the door contact portion of the window frame and disengage the engagement portion and the locking rod when the window shovel moves to the closed position. A locking device for a window shoji, in which an action portion extending in the contact portion direction is provided on the stopper piece. 2. The lock rod has a knob protruding from the operation window of the main body on the front surface, and a hooking portion with which the locking portion of the stopper piece engages is formed on the rear surface, and the stopper piece is The swing piece is pivotally mounted in the body, the locking portion is formed at an inner end of the stopper piece, and the acting portion is formed at an outer end of the stopper piece protruding from the main body. 1. A device for locking a window shoji according to 1. 3. The locking device for a window shoji according to claim 2, wherein the hooking portion is a concave hole, and the stopper piece is biased in a direction in which the locking portion enters the concave hole.