JPH08210002A - Locking device for door guard arm - Google Patents

Abstract

PURPOSE: To make the removal of a strike plate impossible at the time when a guard arm device is operated, and to widen the range of application. CONSTITUTION: Supporting pieces 8 are integrally formed in the upper and lower end parts of a grout guard 1 that is previously fixed to a door frame or the like independently of a strike plate 3 respectively, and in the respective supporting pieces 8, both a large diameter part through which the flange of a connecting pin 7 that has been projectedly provided to the rear surface of the strike plate 3 can be inserted and a potbellied locking hole 9 having a groove part continuously provided horizontally so as to be slidable with the shaft part are opened. By sliding the strike plate 3 in the combining direction, the strike pate 3 is temporarily stopped to the grout guard 1 through the engagement of the connecting pin 7 with the locking hole 9. The movement of the strike plate 3 in the separating direction can be prevented by the interference of the control projection 13 that is lifted when the guard arm device is operated with the control lever 14 that has been projected on the rear surface of the strike plate.

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 guard arm of a door (hereinafter simply referred to as a locking device), and more particularly to a locking device which cannot be removed when the guard arm device is activated.

[0002]

2. Description of the Related Art The present applicant has previously filed Japanese Patent Application No. 1-4368.
With No. 1, we proposed a new locking device for a heartbeat of the type having a guard arm rotatably attached to the free end expected surface of the door.

In this locking device, a hole for allowing a flange of a locking pin with a flange projectingly provided at the tip of a guard arm to enter and exit, and a long hole for vertically guiding a shaft portion of the locking pin are vertically moved. A box-shaped body having a strike plate continuously opened in a direction and attached to the prospective surface of the door or the door frame facing the door, the bottom surface of the box-shaped body is set with a set screw to face the opposite door or An engaging piece that is fixed to the door frame and accommodates a slider provided with a cover of this set screw so as to be vertically movable in the internal space of the box-like body, and engages with the locking pin at the tip of the guard arm in this slider. Is projected.

[0004]

The locking device proposed by the applicant of the present invention, of course, fulfills the intended function and is in practical use.

However, the above-mentioned locking device has a precondition that the bottom surface of a so-called troyoke is fixed to the other door or door frame by a set screw.

[0006] Normally, the troyooke is fixed by being inserted into the other side through the opening of the other door or door frame. Therefore, in order to fix the bottom part of the troyoke to the door frame or the like, the troyoke bottom plate is inserted into the opening. The fixing surface to be joined must be formed.

This means that it is necessary to prepare a dedicated one such as a door frame according to the size of the locking device in advance, and there is a disadvantage that the applicable range of the locking device is limited.

It is an object of the present invention to provide a locking device which does not require a fixing surface in the door frame to be joined to the bottom plate of the troyoke and can be attached to any door frame or a counterpart door.

[0009]

In order to achieve the above object, the invention according to claim 1 is a through hole through which a flange of a locking pin with a flange projecting from the tip of a guard arm can enter and exit. , And a long hole that vertically guides the shaft portion of the locking pin is vertically connected and opened, and a strike plate in which flanged coupling pins are planted on the upper and lower ends of the rear surface A vertically elongated elongated box-shaped body that has attachment pieces integrally connected to the upper and lower opening edges, and support pieces that project inside the box-shaped body at the upper and lower ends of the opening-side edge. Each support piece has a large-diameter portion through which the flange of the connecting pin can be inserted, and a horizontally polished locking hole formed by horizontally connecting a groove portion capable of sliding contact with the shaft portion of the connecting pin. Up and down in the Troyoke and the inner space of this Troyoke A slider that is guided so as to be movable in the direction and that has an engaging piece that engages with the locking pin, a vertically elongated control projection formed on this slider, and a control rod that is provided on the back side of the strike plate. And a first mounting screw that penetrates only the above-mentioned mounting piece of the troyoke and first fixes only the troyoke to the opposing door or the door frame, and a connecting pin of the strike plate that covers the first mounting screw is a locking hole of the supporting piece of the troyoke. After inserting the strike plate into the large diameter part, move the strike plate in the horizontal connecting direction to engage the shaft part of the connecting pin with the groove part of the locking hole to connect the strike plate to the troyoke, and then at least the strike plate. And a second mounting screw for fixing the strike plate to the troyoque mounting piece or the opposing door or the door frame by penetrating through the hole, and the protruding position of the control rod of the strike plate and the forming position of the control protrusion of the slider. Length, When engaged with the locking pin of the rider and the guard arm, and the coupling direction of the control rod, characterized in that set to prevent movement in the opposite direction.

According to the second aspect of the present invention, a hole for allowing the flange of the locking pin with a flange provided at the tip of the guard arm to enter and exit, and a shaft portion of the locking pin are vertically guided. The vertical holes are connected to each other in the vertical direction and opened, and the connecting pins with flanges are planted at the upper and lower ends of the back surface. Is a vertically elongated elongated box-shaped body, and the attachment pieces are integrally coupled to the upper and lower opening edges, and the support pieces projecting inside the box-shaped body are provided at the upper and lower ends of the opening side edge, respectively. Formed integrally, each support piece has a large-diameter part through which the flange of the connecting pin can be inserted, and a dull-polish-type locking hole in which a groove part that can slidably contact the shaft part of the connecting pin is connected in a horizontal direction. And troyoke, and up and down in the interior space of this troyoke A slider that is movably guided and projects an engaging piece that engages with a locking pin; and a first mounting screw that penetrates only the above-mentioned mounting piece of the troyoke and first fixes only the troyoke to the facing door or door frame. After inserting the connecting pin of the strike plate that covers the first mounting screw into the large diameter part of the locking hole of the supporting piece of the troyoke, move the strike plate in the horizontal connecting direction to move the shaft part of the connecting pin into the locking hole. By engaging the strike plate with the groove by engaging the groove portion, at least through the strike plate, the strike plate has a mounting piece for fixing the strike plate to the trooke, or a second mounting screw for fixing to the opposite door or door frame, When the engagement piece of the slider and the locking pin of the guard arm are engaged, the control projection interferes with the engagement piece of the slider to prevent the strike plate from moving in the direction opposite to the connecting direction. As above Characterized in that setting the formation position and length of the trike plate back surface of the control protrusion.

[0011]

The locking device according to the first aspect of the present invention configured as described above has the first mounting screw 5, which is inserted through the first mounting screw holes 4a and 4a opened in the mounting piece 4 shown in FIG. 5 (see FIG. 2), first, only the troyooke 1 is fixed to the door frame 2.

Next, a strike plate 3 covering the first mounting screws 5 and 5 is arranged so as to cover the opening of the troyooke 1, and the flange of the connecting pin 7 projecting on the back side thereof is
Dramatic-shaped locking hole 9 (Fig. 3) opened in the supporting piece 8 of the troyoke.
When the strike plate 3 is pressed against the troyooke 1, the flange of the connecting pin 7 passes through the large diameter portion of the locking hole 9 and penetrates to the back surface side of the support piece 8.

In this state, when the strike plate 3 is displaced in the connecting direction, that is, to the left in FIG. 3, the shaft portion of the connecting pin 7 engages with the groove portion of the locking hole 9, so that the strike plate 3 is thereafter directed in the plane of the drawing. Is restrained from moving.

The movement of the strike plate 3 in the connecting direction is, as shown in FIGS. 2 and 3, when the guard arm device is not operating, that is, the slider 12 is at the lowermost position in the troyoque internal space. Do it at some point.

When the strike plate 3 is temporarily fixed to the trowel plate 1 as described above, the second mounting screws 11 and 11 penetrating both the strike plate 3 and the trowel plate mounting piece 4.
(See FIG. 1 and FIG. 2)
Fixed to.

When the guard arm device is actuated, the locking pin 16 inserted into the hole 17 (see FIG. 1) opened in the strike plate 3 allows the free end of the door to be projected as the door is rotated in the opening direction. Due to the relative movement of the surface and the door frame 2, the door arm 2 is pulled by the guard arm and enters the elongated hole 18 of the guide hole 10.

In this process, the locking pin 16 engages with the engaging piece 12a of the slider, and thereafter moves integrally with the slider 12.

The control protrusion 13 on the slider is the slider 1
As soon as 2 engages with the locking pin 16 and starts to follow it, the control rod 14 (FIG.
(See reference), that is, on the right side, that is, in the direction opposite to the direction in which the strike plate 3 and the troyooke 1 are connected, it is located above this.

When the door is opened when the guard arm device is activated and the strike plate is exposed to the external space, a malicious third party inserts a screwdriver or the like through the gap between the door and the door frame to attach the second mounting screws 11 and 11. Even if it is removed, in order to separate the strike plate 3 from the troyoque 1, it is necessary to move the former to the right relative to the latter.

At this time, even if an attempt is made to move the strike plate 3 to the right, the control rod 14 integrated with the strike plate is prevented from moving by the control projection 13, so that the strike plate 3 cannot be removed. No, the guard arm device cannot be unlocked.

The operation of the locking device according to the second aspect of the invention is substantially the same as that of the invention according to the above-mentioned first aspect, so only the differences will be described.

That is, in the locking device according to the second aspect of the present invention, the control projection 13 is not provided on the slider side, but is provided on the back surface of the strike plate 3 along the elongated hole. As shown by the chain double-dashed line in FIG. 5, when the locking pin 16 of the guard arm is engaged with the slider 12 when the guard arm device is operating, the second mounting screw 1
Even if the strips 1 and 11 are removed and the strike plate is moved to the right (the direction opposite to the coupling direction), the control projection 13 interferes with the slider engagement piece 12a, so that the strike plate 3 is finally removed from the trowel. It is not possible to break the guard arm device.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 showing an embodiment of the invention described in claim 1, reference numeral 1 indicates a so-called troyoke, and this troyoke 1 is an elongated box with one surface opened, as is particularly clear in FIGS. 2 and 4. It is a state.

As shown in FIG. 2, this troyooke 1 has an opening on the prospective surface of the door frame 2 facing the free end prospective surface of the door when closed (the free side edge of the door). And is embedded so that the longitudinal direction is vertical, and is fixed to the door frame 2 independently of the strike plate 3 as described below.

That is, as shown in FIG. 3, mounting pieces 4 are integrally connected to the upper and lower opening end edges of the troyooke 1, respectively, and a first mounting screw hole 4a with a plate opened in the mounting piece 4. With the first mounting screw 5 (see FIG. 2) passing through
It is screwed to the door frame 2.

The strike plate 3 is provided on the prospective surface of the door frame 2 in which the troyoke 1 is embedded so as to cover the opening of the troyoke 1.
Is mounted (see FIGS. 2 and 3).

As shown in FIG. 1, the strike plate 3 is, for example, a plate-shaped member having a dead bolt locking hole 6 opened downward and a guide hole 10 for a guard arm opened upward. In order to increase the rigidity, the left side edge in FIG. 1 is bent at a right angle.

As shown in FIGS. 3 and 4, coupling pins 7 with flanges are planted at the upper end and the lower end on the rear surface side of the strike plate 3, and the central portion on the rear surface side. A control rod 8 which will be described later is provided on the projection.

The above-mentioned connecting pins 7 and 7 detachably connect the strike plate 3 and the trousers 1, and corresponding to the connecting pins, the upper end and the lower end of the trowels 1 are shown in FIG. As shown in FIG. 3, the support pieces 8 projecting inside the box-shaped body which is the main body of the troyoke are integrally formed.

In the illustrated embodiment, the supporting piece 8 is formed by bending the protruding pieces provided at the upper end and the lower end of the opening side edge of the troyooke 1 inside the box-shaped body.

As shown in FIG. 3, each supporting piece 8 has a large-diameter portion through which the flange of the connecting pin 7 can be inserted and a groove which can be slidably contacted with the shaft of the connecting pin in a horizontal direction. Shaped locking holes 9 are open.

In the embodiment shown in FIG. 3, the polishing hole 9 is a polishing hole.
The large-diameter part of is arranged on the right side, and the groove part is arranged on the left side. Therefore, when connecting the strike plate 3 to the troyooke 1, after aligning the latter connecting pin with the large-diameter part of the locking hole,
The strike plate 3 is moved in the direction approaching the troyooke 1 to make the engaging hole 9 submerge in the connecting pin 7.

Next, when the strike plate 3 is moved to the left in FIG. 1, the shaft portion of the connecting pin comes into engagement with the groove portion of the locking hole 9 and moves at least in the direction of the paper surface as shown in FIG. become unable. In this case, the direction from the right side to the left side in FIG. 1 is the coupling direction described above.

As described above, troyoke 1 and strike plate 3
The second mounting screw 11 (see FIGS. 1 and 2) passing through the second mounting screw hole 4b (see FIG. 3) of the strike plate 3 and the mounting piece 4 of the troyoke after provisionally coupling them through the coupling pins 7, 7. ) To fix the strike plate 3 to the door frame 2.

In the illustrated embodiment, the second mounting screw 1
1 penetrates both the strike plate and the troyoke mounting piece 4, and is screwed into the female screw hole opened in the door frame or the like which is the mounting surface. The strike plate 3 is screwed to the troyoke mounting piece 4. You can also think of a fixing method to do, in this case,
The second mounting screw 11 penetrates only the strike plate 3 and is screwed into a female screw hole opened in the mounting piece 4.

On the other hand, a slider 12 which is vertically movable is housed inside the troyooke 1.

As shown in FIGS. 2 and 3, the slider 12 in the illustrated embodiment is a frame having a U-shaped cross section in a horizontal plane, and the upper end of the slider 12 is engaged with the guard arm when the guard arm device is activated. An engaging piece 12a having an L shape as a whole and engaging with the stop pin is provided in a protruding manner.

As shown in FIGS. 2 and 3, on the slider 12, a vertically elongated control ridge 13 formed by joining members having an L-shaped cross section by spot welding, for example.
Is protruding.

When the control projection 13 extends into the dead bolt locking hole 6 as in the illustrated embodiment, it does not interfere with a dead bolt (not shown) inserted into the dead bolt locking hole. It is good to make it low. In case of interference, a groove perpendicular to the surface of the dead bolt is formed to avoid interference with the control protrusion 13.

On the other hand, on the rear surface side of the strike plate 3, as shown in FIGS.
A control rod 14 is provided so as to project.

The relative positions of the control rod 14 and the control projection 13 are set so that the control rod 14 is in the left direction with respect to the control projection 13 in the horizontal direction, that is, in the connecting direction, as shown in FIG. Has been done.

In the vertical direction, when the slider 12 is at the lowermost position, that is, when the locking pin 16 of the guard arm 15 is not engaged with the slider engagement piece 12a as shown in FIG. The relative relationship between the two is set so that the control rod 14 is above the upper end of the control projection 13.

With the above settings, when the guard arm device is operating, that is, when the door is open and the slider 12 is rising, even if the second mounting screw 11 is removed, the strike plate 3 is opposite to the connecting direction. As described above, the strike plate 3 cannot be separated from the troyooke 1 because the control rod 14 is locked by the control protrusion 13 even if the strike plate 3 is moved in the direction.

According to the second aspect of the present invention, the control projection 13 is not provided on the slider, but is provided on the rear surface of the strike plate 3 along the elongated hole 18 as shown in FIGS. ing.

The control projection 13 is, for example, a vertically long member having an L-shaped cross section as shown in the drawing, and is fixed to the back surface side of the strike plate 3 by spot welding.

In the horizontal direction, the control projection 13 extends vertically in the connecting direction of the strike plate 3 with respect to the elongated hole 18.

Further, in the vertical direction, as shown in FIG. 5, when the slider 12 is not engaged with the locking pin of the guard arm and is at the lowermost position in the troyooke 1, it is further above the engaging piece 12a. So strike plate 3
When the is attached to the troyoke 1, the strike plate 3 can be moved in the connecting direction (leftward).

[0048]

As is apparent from the above description, according to the present invention as well as the one described in claim 1 and claim 2, the door is independent of the strike plate by the first mounting screw. The strike plate that covers the first mounting screw is temporarily fixed to the troyoke fixed to the frame by horizontal movement in the connecting direction, and then the second mounting screw that commonly penetrates the strike plate and the troyoke mounting piece. The strike plate is fixed to the door frame by the above, and when the guard arm device is activated, the strike plate is prevented from moving horizontally in the direction opposite to the connecting direction. The intended effect is that the strike plate cannot be separated from the troyoke even if the mounting screw is removed.

Further, since the first and second mounting screws are screwed onto the surface of the door frame, the range of application of this locking device is unlimited regardless of the structure of the door frame, etc. Produce an effect.

[Brief description of drawings]

1 is a front view of a locking device according to an embodiment of the invention as set forth in claim 1; FIG.

FIG. 2 is a side view thereof.

FIG. 3 is a front view of the troyoke.

FIG. 4 is a side view of the strike plate.

FIG. 5 is a front view of the troyoke of the locking device according to the embodiment of the invention as set forth in claim 2;

FIG. 6 is a side view of the strike plate.

[Explanation of symbols]

 1 Troyoke 2 Door frame 3 Strike plate 4 Mounting piece 5 First mounting screw 7 Coupling pin 8 Supporting piece 9 Locking hole 10 Guide hole 11 Second mounting screw 12 Slider 12a Engaging piece 13 Control projection 14 Control rod 15 Guard arm 16 Locking pin 17 Removal hole 18 Long hole

Claims (2)

[Claims] 1. A hole for allowing a flange of a locking pin with a flange protruding from the tip of a guard arm to enter and exit,
And a long hole that guides the shaft part of the locking pin up and down is continuously provided in the up and down direction to open, and a strike plate in which coupling pins with flanges are planted at the upper and lower ends on the back side and one side is open. The vertically elongated slender box-like body is integrally joined to the upper and lower opening edges, and at the upper and lower ends of the opening-side edge, the supporting pieces projecting inward of the box-like body are integrally formed. A troyooke having a large-diameter portion through which the flange of the above-mentioned connecting pin can be inserted and a groove that can be slidably contacted with the shaft portion of the above-mentioned connecting pin and which is continuously connected in a horizontal direction to each supporting piece. And a slider provided with an engaging piece projecting vertically movably in the internal space of the troyooke and engaging with the locking pin, a vertically elongated control projection formed on the slider, and a strike plate. The control rod protruding from the back side and the troyo The first mounting screw that penetrates only the above-mentioned mounting piece and first fixes only the troyoke to the opposite door or the door frame, and the connecting pin of the strike plate that covers the first mounting screw is the large diameter portion of the locking hole of the supporting piece of the troyoke , The strike plate is moved in the horizontal connecting direction to engage the shaft part of the connecting pin with the groove part of the locking hole to connect the strike plate to the troyoke and then at least penetrate the strike. The strike plate has a mounting piece for fixing the troyoke, or a second mounting screw for fixing to the opposite door or the door frame, and the protruding position of the control rod of the strike plate and the forming position and length of the control protrusion of the slider are A door guard arm locking device, characterized in that it is set so as to prevent movement of the control rod in a direction opposite to the connecting direction when the slider and the locking pin of the guard arm are engaged. 2. A hole for allowing a flange of a locking pin with a flange protruding from the tip of a guard arm to enter and exit,
Also, elongated holes that guide the shaft part of the locking pin up and down are continuously provided in the vertical direction to open, and coupling pins with flanges are planted at the upper and lower ends on the back side and control is performed along the elongated holes. A strike plate with protruding ridges and a vertically long and slender box-shaped body with one surface open.The upper and lower opening edges are integrally connected with mounting pieces, and the box is provided at the upper and lower ends of the opening-side edge. The support pieces projecting inward of the body are integrally formed, and a large diameter portion through which the flange of the coupling pin can be inserted and a groove portion capable of sliding contact with the shaft portion of the coupling pin are connected to each support piece in the horizontal direction. A troyoke with a Dharma-shaped locking hole
The slider, which is guided so as to be movable in the vertical direction in the inner space of the troyoke and projects from the engaging piece that engages with the locking pin, and only the above-mentioned mounting piece of the troyoke, penetrates only the troyoke first to the opposite door or door frame. After inserting the 1st mounting screw to be fixed to and the connecting pin of the strike plate that covers the 1st mounting screw into the large diameter part of the locking hole of the supporting piece of the troyoke, move the strike plate in the horizontal connecting direction for connection. By engaging the strike plate with the troyooke by engaging the shaft of the pin with the groove of the locking hole, at least penetrate the strike plate and fix the strike plate to the troyoque mounting piece, or the opposite door or door frame. When the engagement piece of the slider and the locking pin of the guard arm are engaged with each other, the control projection interferes with the engagement piece of the slider and the above-mentioned connecting direction of the strike plate is provided. As the movement of the pair direction is prevented, the locking device of the guard arm of the door, characterized in that setting the formation position and length of the strike plate rear surface of the control protrusion.