JPH034702Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) This invention relates to a locking device that is attached to a swinging door that is installed in a window of a house and that opens and closes around a hinge on one side to hold the swinging door in an open state.

(Background Art) Sliding type glass shoji are installed on the windows of houses, and double-folding type shutters are further installed on the outdoor side of the glass shoji. Figures 1 and 2 show windows equipped with such shutters. There are hinges 3, 3 between the left and right vertical frames 1a, 1a of the window frame 1, which has a glass shoji (not shown) installed inside, and the vertical frame 2 of the shutter.
A pair of left and right shutters 4, 4 are installed so that they can be opened and closed freely. These shutters 4, 4 can be rotated 180 degrees around the hinges 3, 3, so the window can be opened as shown by the solid line in Figure 2, or closed as shown by the chain line in the same figure. You can do it.

By the way, in order to hold a hinged door such as this one that opens and closes around a hinge in an open state, a locking device is installed between the lower frame 5 of the window frame 1 and the shutter 4 (part A in FIG. 1). It is being established.
However, with the conventional locking device, it is troublesome to lock the hinged door in the open position or in the half-open position shown by the chain line a in FIG.

(Objective of the present invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a locking device for a hinged door that can easily lock the hinged door at a predetermined opening degree.

(Structure of the present invention) The locking device for a hinged door of the present invention has one end of a second arm pivotally connected to the other end of a first arm whose one end is pivotally connected to the lower surface of the hinged door, and the second arm The other end of the third arm is pivotally connected to the upper surface of a bracket fixed to the upper surface of the lower frame of the window frame, and the other end of the third arm is pivotally connected to the upper surface of this bracket at a portion slightly apart from the second arm. The pivoted slider is slidably engaged with a long hole formed in the second arm, and the lower surface of the knob fixed to the head of a screw screwed into the screw hole formed in the slider from above is inserted into the second arm. It can freely come into contact with the top surface of the arm.

(Operation of the present invention) In the hinged door locking device of the present invention configured as described above, when the hinged door is closed, the first, second, and third arms overlap each other and are attached to the upper surface of the lower frame. The first and second arms are held approximately parallel to the lower frame and the hinged door, and when the hinged door is rotated about the hinge to open the hinged door, the first and second arms open the angles formed by each other, and the brackets on the upper surface of the hinged door or the lower frame respectively. It also rotates against. At the same time, one end of the third arm rotates relative to the bracket, and a slider pivotally connected to the other end of the third arm slides within an elongated hole provided in the second arm. Therefore, with the hinged door open to the desired angle, tighten the screw that is threaded into the screw hole of the slider, and press the bottom surface of the knob fixed to the head of this screw against the top surface of the second arm, so that the slider is long. Avoid sliding in the hole. Since the slider becomes unable to slide, the first to third arms become unable to rotate, and the hinged door is held open by the desired angle.

(Embodiments of the present invention) Next, the present invention will be explained in more detail with reference to drawings showing embodiments.

3 to 5 show a locking device for a hinged door according to the present invention. The bracket 6 fixed to the upper surface of the lower frame 5 (FIG. 1) has through holes 7, 7 at both ends for inserting screws for fixing the bracket 6 to the upper surface of the lower frame, and one end of the upper surface. One end of a second arm 8 is pivotally attached to the upper surface of the second arm 8, and one end of a third arm 9 is pivotally attached to the upper surface of a portion of the second arm 8 that is slightly closer to the center than the pivot portion. Further, one end of a first arm 10 is pivotally attached to the upper surface of the other end of the second arm 8 via a spacer 11, and furthermore, a mounting plate is attached to the upper surface of the other end of the first arm 10. 12 is pivotally mounted. This mounting plate 12 has a plurality of small circular holes 1.
3, 13 are bored, and these small circular holes 13, 1
The mounting plate 12 is fixed to the lower surface of the lower stile 14 by screwing the screws inserted through the shutter 3 from below into the screw holes provided in the lower stile 14 (FIG. 1) and tightening them. Further, a long hole 15 is formed in the second arm 8 and extends almost the entire length of the arm 8, and a slider 16 pivotally connected to the other end of the third arm 9 slides into this long hole 15. freely engaged. The slider 16 is provided with a screw hole 17 (FIG. 5), and the head 18a of the screw 18 screwed into the screw hole 17 from above has a thick disk shape and a diameter similar to that of the elongated hole 18. A knob 19 larger than the width of the head 18a is fixed non-rotatably to the head 18a.

Since the hinged door locking device of the present invention is constructed as described above, when the shutter is opened from the closed state by rotating around the hinge 3, the first and second arms 10, 8 The slider 1 moves through the state shown by the chain line x in FIG.
6 slides in this elongated hole 15, and a third arm 9, which has one end pivotally connected to the bracket 6 and the other end to this slider 16, also follows the rotation of the first and second arms 10, 8. It rotates accordingly. Therefore, with the shutter open to a desired angle, rotate the knob 19 to insert the screw 18 into the screw hole 17, and forcefully press the lower surface of the knob 19 against the upper surface of the second arm 8, and the slider 16 can no longer slide along the elongated hole 15, and each arm 8, 9, 10 is held in that state. When closing the shutters or opening them wider,
If the screw 18 is loosened by rotating the knob 19 and the lower surface of the knob 19 is separated from the lower surface of the second arm 8, each arm 8, 9, 10 becomes rotatable, and the shutter 4 is rotated around the hinge 3. Be able to open and close.

(Effects of the Present Invention) Since the hinged door locking device of the present invention is constructed and operates as described above, it is possible to open the hinged door to a predetermined position and lock it at that position with great ease.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a hinged door, Fig. 2 is a schematic cross-sectional view thereof, Fig. 3 is a perspective view showing an embodiment of the locking device of the present invention, Fig. 4 is a plan view thereof, and Fig. 4 is a plan view thereof. Figure 5 is a longitudinal sectional side view of the same part. 1: window frame, 1a: vertical frame, 2: vertical stile, 3: hinge,
4: Storm door, 5: Bottom frame, 6: Bracket, 7: Through hole, 8: Second arm, 9: Third arm, 1
0: First arm, 11: Spacer, 12: Mounting plate, 13: Small circular hole, 14: Lower stile, 15: Long hole, 1
6: Slider, 17: Screw hole, 18: Screw, 18
a: head, 19: knob.

Claims (1)

[Scope of utility model registration request] One end of the second arm is pivoted to the other end of the first arm, which has one end pivoted to the bottom surface of the hinged door, and the other end of the second arm is attached to the top surface of the bracket fixed to the top surface of the bottom frame of the window frame. A third arm is pivotably mounted, and one end of the third arm is pivoted to a portion of the upper surface of the bracket that is a little apart from the second arm.A slider that is pivoted to the other end of the third arm is slid into a long hole formed in the second arm. freely engage,
A locking device for a hinged door, in which the lower surface of a knob fixed to the head of a screw screwed into a screw hole provided in the slider from above can come into contact with the upper surface of a second arm.