JP2587106Y2 - Beware - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a door mounted inside a door, wherein when the door is set, the opening angle of the door is restricted to prevent intrusion of a person from outside, and when the door is reset, the door is fully opened. It relates to a guard that can be used.

[0002]

2. Description of the Related Art Regarding precautionary metal fittings, see Japanese Utility Model Application Publication No.
There is a technique described in Japanese Patent No. 0279 gazette. In this precautionary metal fitting, a pedestal is screwed to the indoor side surface of the door that opens outward, one end of a rotating rod is pivotally attached to the pedestal, and a locking metal fitting is attached to the frame side. A wide portion is formed at one end of the rotating rod, a long groove is formed continuously with the wide portion, and a shaft that can be inserted into the long groove is provided upright on the locking metal fitting. A head that is larger than the width of the long groove and that can be inserted into the wide portion is provided.

In a reset state in which the head of the latch is removed from the wide portion, the rotating rod is released from the restraint of the latch, so that the door can be fully opened. In the set state inserted in the wide portion, the shaft portion travels in the long groove as the door is opened, and the running is blocked at the end of the long groove, so the opening angle of the door is limited, and an outside person enters the room. Can not do. The following problems have been left in such a guard metal fitting.

[0004]

When the precautionary metal fitting is set, the opening of the door is restricted to prevent the intrusion of a person, but the hand of the person can be inserted. Therefore, inserting the hand holding the driver through this gap and removing the screw of the pedestal allows the guard to be removed from the door,
It was not possible to prevent a malicious crime that opened the door and entered the room. An object of the present invention is to provide a safe guard that cannot remove the set guard from the outside.

[0005]

In order to achieve the above object, a guard fitting of the present invention has a pair of upright walls erected on a mounting wall having a screw insertion hole, and is inserted into the screw insertion hole. A bracket that is fastened to one of the door and the frame side by a fastening screw, a cover that covers the fastening screw, and is fixed to the bracket between the pair of upright walls, and a pair of the uprights One end is pivotally attached to the wall,
The guard metal fitting portion composed of a wide portion formed at the one end portion and a rotating arm having a long groove connected to the wide portion, and a striker bracket attached to the other of the door and the frame side, A shaft that can be inserted into the long groove is erected,
A striker having a head that is larger than the width of the long groove and that can be inserted into the wide portion is provided at the tip of the shaft portion. An elastic arm having a locking projection that engages with the long hole can be formed integrally with the cover.

[0006]

When the pivot arm falls down in the direction away from the striker, the long groove of the pivot arm separates from the striker, and the pivot arm is locked by the locking projection. The metal fitting is held in the reset state. In this reset state, since the guard member and the striker are not engaged, the door can be fully opened.

When the pivot arm is raised in the direction of the striker when the door is closed, the long groove of the pivot arm coincides with the moving direction of the shaft of the striker, and the guard metal fitting is set. In this set state, when the door is opened, the shaft slides along the long groove, and when the shaft reaches the end of the long groove, the sliding stops, and the door cannot be opened any more.
The opening of the door is limited to a narrow width that cannot be entered by a person.

The fastening screw for fastening the bracket to the door or the frame side cannot be removed by a screwdriver because it is covered by the cover. Therefore, there is no danger of the guard being removed from the outside. When the door is closed, the shaft portion of the striker returns to a wider portion than the long groove, so that the turning arm can be lowered in a direction away from the striker to return to the original reset state.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a reset state of a guard fitting A, FIG. 2 is a plan view of FIG. 1, and FIG. View, FIG.
Is a cross-sectional view taken along the line Y-Y in FIG. 1, and FIG. As shown in FIG. 5, the bracket 1 has an upper wall 1b cut and bent from a stainless steel plate fixed on a mounting wall 1a cut from a stainless steel plate by welding or the like.

At both ends of the mounting wall 1a, screw insertion holes 2 are provided.
The upper wall 1b is provided with upright walls 3 and 3 which are bent upward at both ends, and a screw hole 4 is provided at the center of the upper wall 1b. Then, the bracket 1 is fastened to the inward opening type frame side C or the outward opening type door D by the fastening screw 13 inserted into the screw insertion hole 2 (FIG. 6, FIG. 6).
(See FIG. 7).

A cover 5 made of a synthetic resin material mounted on the bracket 1 has a covering wall 6 having a lower end 6b on both sides of a central portion 6a, and an elastic arm standing upright on the central portion 6a. 7 and two rectangular holes 8 and 9 are provided in the central portion 6a. The elastic arm 7 is formed in a substantially U-shape by a slit 10 opening at the upper end, and locking projections 11 project from both side surfaces of the upper end.

A recess 12 is provided on the lower surface of the covering wall 6 (see FIG. 4), and the upright walls 3, 3 of the bracket 1 housed in the recess 12 project from the rectangular hole 8. Then, the screw 14 inserted into the hole 9 is screwed into the screw hole 4, and the cover 5 is attached to the bracket 1. Therefore, bracket 1
Is covered by the cover 5 except for the upright wall 3.

A hole 15 penetrates the upright walls 3, 3, and a headed pin 16 having a head 16 a on one side and an annular groove 17 provided on the other side is provided outside the upright walls 3, 3. After that, the hole 19 and the washer 20 provided at one end of the rotating arm 18 are inserted into the headed pin 16, and then the E-shaped clip 21 is fitted into the annular groove 17. You. Therefore,
One end of the pivot arm 18 is pivotally connected to the pin 16 with a head. At one end of the rotating arm 18, a wide portion 22 opposed to each other with a space therebetween is provided, and a long groove 23 with a narrow space is continuously provided in the wide portion 22.

The strikes engaged and disengaged from the guard member A constructed as described above include a strike B attached to the inward-opening door D and a strike B 'attached to the frame side C of the outward-opening door D. (See FIGS. 6 and 7).
Strike B includes a striker bracket 24 having a mounting wall 25 provided with mounting holes 26 at both ends, an upright wall 27 bent and extended from the mounting wall 25, and an upright wall 2.
6 and a shaft 28 having a head 29 at the tip.
It is fastened to the inward-opening door D by a screw 30 inserted into the mounting hole 26 (see FIGS. 5 and 7).

In the case of the inward opening type door D, a guard metal part A is attached to the frame side. The strike B 'attached to the frame side C of the door D of the outward opening type has mounting holes 3 at both ends.
A shaft 33 having a head portion 34 at the tip is erected on a striker bracket 31 provided with 2 and attached to the frame side by screws 35 inserted into the attachment holes 32 (see FIGS. 5 and 7). In this case, the guard part A is an open door D
Attached to.

Next, the operation of the guard metal fitting constructed as described above will be described. The operation of the guard metal fitting in the case of the inward-opening type door and the case of the outward-opening type door is the same, so the guard metal fitting (see FIG. 6) attached to the inward-opening type door will be described. When the pivot arm 18 of the guard metal part A falls down in the direction away from the striker B, the pivot arm 1
The long groove 23 of 8 moves away from the shaft 28 of the striker B (see FIG. 1), and the guard metal is reset.

In this reset state, when the door D is opened,
Since the shaft 28 of the striker B in the wide portion 22 moves in the direction of arrow F in FIG. 2 and moves away from the guard fitting A, the door D can be fully opened at any time. Further, by a reset operation of lowering the rotating arm 18 in a direction away from the striker B, the rotating arm 18 collides with the locking projection 11, and the elastic arm 7 is elastically deformed to allow the rotating arm 18 to pass. Since the elastic arm 7 elastically returns to the old shape after the rotation arm 18 passes through the locking projection 11, the locking projection 11 engages with the rotation arm 18 (see FIGS. 2 and 3). Therefore, the rotating arm 18 is locked in the lying state, and the guard metal is held in the reset state.

As described above, when the guard is reset and the door D is closed and the turning arm 18 is turned in the direction of the striker B, the locking projection 11 is attached to the turning arm 18. The pressed elastic arm 7 is elastically deformed (see FIG. 9A), and the rotation of the rotation arm 18 is allowed. When the turning arm 18 is turned upright by approximately 90 degrees, the long groove 23 of the turning arm 18 coincides with the moving direction of the shaft portion 28 of the striker B, and the guard metal fitting is set.

In this set state, when the door D is opened, the shaft 28 slides along the long groove 23, and stops sliding when it reaches the end of the long groove 23, so that the door D cannot be opened any more. , The opening of the door D is limited to a narrow width that a person cannot enter (see FIG. 6).

Even if the driver inserts his / her wrist into the gap limited to the narrow width and tries to remove the fastening screw 13, the fastening screw 13 is covered by the cover 5. Can not. Also, cover 5
Even if it is attempted to remove the screw 14 to which the screw 14 is attached, both sides of the screw 14 are surrounded by the upright wall 3 and one end of the turning arm 18 is close to the upper part of the screw 14, so the screw 14 is removed with a screwdriver. It is not possible. Even if it is assumed that the screw 14 has been removed, one end of the rotating arm 18 prevents the cover 5 from being removed. Therefore, there is no danger of removing the guard from outside.

When the door D is tightened, the shaft 2 of the striker B
8 returns to the wide portion 22 from the long groove 23, so that the rotating arm 18 can fall down in the direction away from the striker B to return to the original reset state. In the case of the outward opening type door, the guard metal fitting attached to the back surface of the door D projects outside the door together with the door D, so that it becomes easy to use a driver. However, for the same reason as above, the fastening screw 13 is used. Cannot be removed (see FIG. 7).

[0022]

[Effects of the Invention] The present invention is configured as described above, and has the following effects. (1) In the present invention, since the fastening screw of the guard metal part is covered by the cover, the guard metal part can be removed even if the wrist holding the driver etc. is inserted through the gap of the door whose opening is limited. Can not. Therefore, there is no danger of a person intruding from the outside, and the reliability of the precautionary metal fittings is enhanced. (2) In the present invention, since the rotating arm is lightly locked at the reset position, there is no possibility that the rotating arm will be shaken during the reset.

[Brief description of the drawings]

FIG. 1 is a front view showing a reset state of a guard fitting A;

FIG. 2 is a plan view of FIG.

FIG. 3 is a view as viewed in the direction of the arrow X in FIG. 1;

FIG. 4 is a sectional view taken along line YY of FIG. 1;

FIG. 5 is a perspective view of components constituting a guard metal fitting.

FIG. 6 is a plan view of a guard fitting attached to an inward-opening door.

FIG. 7 is a plan view of a guard metal fitting attached to the inward-opening type door.

FIGS. 8A and 8B are plan views of a guard fitting A for explaining a process of shifting from a reset state to a set state.

9A and 9B are FIGS. 8A and 8B, respectively.
FIG. 3B is a view as viewed in the direction of the arrow X.

[Explanation of symbols]

 A Guard metal parts B, B 'strike C Frame side D Door 1 Bracket 1a Mounting wall 2 Screw insertion hole 3 Standing wall 5 Cover 6 Covering wall 7 Elastic arm 11 Locking projection 13 Fastening screw 18 Rotating arm 22 Wide part 23 Long grooves 24, 31 Strike brackets 28, 33 Shafts 29, 34 Head

Claims (2)

(57) [Scope of request for utility model registration] 1. A pair of upright walls are erected on a mounting wall having a screw insertion hole, and fastened to one of a door and a frame side by a fastening screw inserted into the screw insertion hole. A bracket, which covers the fastening screw, is fixed to the bracket between the pair of upright walls, and one end is rotatably pivotally connected to the pair of upright walls, and is formed at the one end. A guard member constituted by a wide portion having a wide portion and a rotating arm having a long groove connected to the wide portion; and a shaft which can be inserted through the long groove into a striker bracket attached to the other of the door and the frame side. And a striker provided at a tip of the shaft portion and having a head larger than the width of the long groove and capable of being inserted into the wide portion. 2. The guard fitting according to claim 1, wherein an elastic arm having a locking projection that engages with the long groove is formed integrally with the cover.