JPH1068260A - Door guard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door guard which allow a door to define a slight gap in order to confirm a suspicious visitor, which can surely be retracted during no use so as to prevent occurrence of unexpected erroneous operation. SOLUTION: In a door guard, a locking protrusion 21 having a bulged head is provided to a stationary seat 22 so as to constitute a receiving fixture 23 while the base part of a U-like latching fixture 11 is enlarged so as to define an insertion part 12 for receiving therein the locking protrusion 21, and the end part of the base part is rotatably jouralled to a door attaching seat 13 through a pivot shaft 18 so that the barrel part of the locking protrusion 21 is freely moved in an oblong hole 16 defined between opposite sideS of the latching fixture 11. In this case, the latching fixture 11 is freely fitted on the pivot shaft 18 so as to be vertically movable. The locking protrusion 21 is prevented from entering the insertion part 12 when the latching fixture 18 is located in the lower pat of the pivot shaft 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door guard that allows a door to be slightly opened or closed for checking a suspicious visitor.

[0002]

2. Description of the Related Art Door guards of this type have been conventionally used to protect against suspicious intruders. FIG. 4 shows a conventional door guard of this type.

The door guard has a locking projection 2 having a huge head.
1 is provided on a fixed seat 22 to form a receiving bracket 23, while the base of the U-shaped latch 11 is expanded to form an insertion portion 12 of the locking projection 21, and an end of the base is a door mounting seat. 1
3, the body of the locking projection 21 is freely movable in the long hole 16 between the both sides of the hook 11.

The receiving bracket 23 is fixed to the door frame 31,
The latch 11 is fixed to the door 32.

When the door guard is not used, the latch 11 is folded on the surface of the door 32 as shown by the imaginary line, and when the door guard is used, the latch 11 is closed with the door 32 closed.
Is raised approximately 90 degrees, and the locking projection 21 is inserted into the insertion portion 12.

In this state, when the door 32 is opened,
The body of the locking projection 21 moves freely in the elongated hole 16 toward the free end, and stops at the end of the elongated hole 16. At this time, the head of the locking projection 21 does not come out of the elongated hole 16. Therefore, the door 32 is no longer opened any more, and an intruder from outside can be prevented.

[0007]

However, in the above-mentioned conventional device, since the latch 11 is free to rotate, even if the latch 11 is folded on the surface of the door 32, When the door 32 is closed violently, the latch 11 jumps up due to the impact, and the latch 11 is locked to the locking projection 21 in an unexpected state.
There is a disadvantage that it is difficult to open the door 32 from outside.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door guard which ensures the operation when not in use and does not cause an unexpected malfunction. .

[0009]

The door guard according to the present invention comprises:
A locking projection 21 having a large head is provided on a fixed seat 22 to form a receiving bracket 23, while a locking projection 2 is provided on the base of the latch 11.
One insertion portion 12 is provided, and the end of the base is
A door guard that is rotatably attached to the door mounting seat 13 through the through hole, and that the body of the locking projection 21 is freely movable in the elongated hole 16 starting from the insertion portion 12 between both sides of the latch 11. In this embodiment, the latching projection 11 is loosely fitted to the pivot 18 so as to be freely movable up and down, and the locking projection 21 does not enter the insertion portion 12 when the latch 11 is positioned below the pivot 18.

With this configuration, when the latch 11 is lifted to make the insertion portion 12 correspond to the locking projection 21, the latch 11 is inserted and engaged with the locking projection 21.

On the other hand, when the latch 32 is folded on the surface of the door 32 and the door 32 is closed violently, the latch 11 is pivoted even if the latch 11 jumps up due to the impact. Since it is located at the lower part of 18, the insertion portion 12 of the latch 11 does not lock on the locking projection 21.

Here, if the locking projection 21 is made to correspond to the center of the pivot 18, the left and right doors can be
Even if the hook 11 is turned upside down, the locking projection 21 does not enter the insertion portion 12 when the hook 11 is positioned below the pivot 18, so that one door guard can be used for the left-hand and right-hand doors. There is an advantage that both can be handled.

When the latch 11 is positioned below the pivot 18, if the upper side of the latch 11 corresponds to the locking projection 21, even if the latch 11 jumps up, The insertion portion 12 of the latch 11 is the locking projection 2
The latch 11 is rotated around the pivot 18 from the surface of the door 32 to the tip of the locking projection 21. The swing range of the metal fitting 11 is reduced, and the effect of preventing the fluctuation is large.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a door guard according to the present invention.
This will be described with reference to FIG.

In this door guard, a locking projection 21 having a huge head is provided on a fixed seat 22 to form a receiving bracket 23. On the other hand,
The base of the U-shaped latch 11 is expanded, and the locking projection 21 is opened.
And the end of the base is rotatably attached to the door mounting seat 13 via the pivot 18, and the inside of the elongated hole 16 between both sides of the latch 11 is provided with the locking projection 21. The body is a free-moving door guard.
Is loosely fitted to the pivot 18 so as to be vertically movable, and the latch 11
The lock projection 21 does not enter the insertion portion 12 when is positioned below the pivot 18.

On the door mounting seat 13, a holding piece 17 is provided so as to face and protrude, and a pivot 18 is provided between the holding pieces 17;
The base of the U-shaped latch 11 is pivotally supported on the pivot 18. Therefore, the latch 11 rotates around the pivot 18.

The end of the base of the latch 11 is merely loosely fitted to the pivot 18 so as to be vertically movable.
As shown in FIG. 3, unless it is locked by the locking projection 21, it is located under the pivot 18 by its own weight. At this time, the upper side of the latch 11 corresponds to the locking projection 21. Does not enter the insertion section 12.

As shown in FIG. 2, this latch 11 is substantially 9
When raised by 0 degrees, the expanded insertion portion 12 of the base corresponds to the locking projection 21, and the locking projection 21 is inserted into the elongated hole 16. When the door 32 is opened, the locking projection 21 moves toward the free end of the latch 11 in the elongated hole 16.
At this time, since the enlarged head of the locking projection 21 does not come out of the elongated hole 16, the locking projection 21 reaches inside the elongated hole 16 to reach the free end of the metal fitting 11 when the door 32 is opened. Stop at stage. FIG. 4 shows this state. Thus, the opening of the door 32 is stopped within a certain range.

The removal of the latch 11 from the locking projection 21 is performed by performing the above-described reverse operation. FIG.
In the state of FIG.
In the case corresponding to 1, the locking projection 21 is taken out of the elongated hole 16.

When the latch 11 is folded on the surface of the door 32 and the door 32 is closed violently, the latch 11 is pivoted even if the latch 11 jumps up due to the impact. Since it is located at the lower part of 18, the insertion portion 12 of the latch 11 does not lock on the locking projection 21. In this case, as shown in FIG. 3, since the upper side of the latch 11 corresponds to the latching projection 21, the latch 11 rotates around the pivot 18 only when the latch 32 is engaged from the surface of the door 32. The swing range of the latch 11 due to opening and closing of the door 32 is reduced to the tip of the projection 21,
Wander is prevented.

In the above case, the locking projection 21
If the door guard is arranged at the center of the pivot 18, the above-described effect can be obtained even when the door guard is used upside down. Therefore, it can be used for both right-handed and left-handed doors.

[0022]

According to the door guard of the present invention, when the latch 11 is lifted to make the insertion portion 12 correspond to the locking projection 21, the latch 11 is inserted and engaged. On the other hand, when the latch 11 is folded on the surface of the door 32 and the door 32 is closed violently,
Even if the metal fitting 11 jumps up due to the impact, the metal fitting 1
1 is located at the lower part of the pivot 18, so that the latch 11
Is not locked to the locking projection 21.

Here, if the locking projection 21 is made to correspond to the center of the pivot 18, the left and right doors can be
Even if the latch 11 is turned upside down, when the latch 11 is positioned below the pivot 18, the locking projection 21 does not enter the insertion portion 12. There is an advantage that both can be handled.

When the latch 11 is positioned below the pivot 18, if the upper side of the latch 11 corresponds to the locking projection 21, even if the latch 11 jumps up, Just by hitting the locking projection 21, the latch 1
In addition to the fact that the insertion portion 12 is not locked to the locking projection 21, the latch 11 rotates about the pivot 18 from the surface of the door 32 to the tip of the locking projection 21. Thus, the swing range of the latch 11 due to the opening and closing of the door 32 is reduced, and the effect of preventing wobble is large.

[Brief description of the drawings]

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

FIG. 2 is a sectional view showing an operation state of the above.

FIG. 3 is a side view showing an operation state of the above.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Hook fitting 12 Insert part 13 Mounting seat 16 Long hole 17 Holding piece 18 Axis 21 Locking projection 22 Fixed seat 23 Receiving metal fitting

Claims (3)

[Claims] An engaging projection having a large head is fixed to a fixing seat.
2 and a receiving bracket 23, on the other hand, an insertion portion 12 of a locking projection 21 is provided at a base of the latch 11, and an end of the base is rotatably attached to a door mounting seat 13 via a pivot 18. And an insertion portion 12 between both sides of the latch 11
In the door guard in which the body of the locking projection 21 is freely movable in the elongated hole 16 starting from the beginning, the latch 11 is loosely fitted to the pivot 18 so as to be freely movable up and down, and the latch 11 is positioned below the pivot 18. A door guard characterized in that the locking projection (21) does not enter the insertion portion (12) when being closed. 2. The door guard according to claim 1, wherein the locking projection is arranged to correspond to the center of the pivot. 3. The door guard according to claim 1, wherein when the latch is positioned below the pivot, an upper side of the latch corresponds to the locking projection.