JP3203415B2 - Guard arm lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel guard arm lock in which a visitor can be confirmed or a postal matter can be delivered by restricting an opening angle of an inward opening door.

[0002]

2. Description of the Related Art A guard arm lock of the type in which one or a plurality of arms have a base end pivotally connected to a door frame and a front end side thereof can be selectively engaged with a deadbolt of a door side lock is known. It is more well known and is under active development recently.

However, in the conventional guard arm lock of this type, the guard arm is housed in the gap (dust) between the free side edge of the door and the door frame. Chile dimensions must always be considered for mounting, and the pivoting of the guard arm proximal end is made on the horizontal axis (horizontal axis), and the distal side is horizontal (horizontal direction)
Since the dead bolt that projects into
When the guard arm is opened when the door is opened, the guard arm has a twisting action, and the guard arm has a gouging action between the horizontal arm and the guard arm and the dead bolt. There is a problem that it is easy to perform, and a dug part for attaching the lock box and the strike to the door and the door frame must be prepared, so that the attaching work is troublesome.

[0004]

SUMMARY OF THE INVENTION The guard arm lock of the present invention solves all of the above-mentioned problems so that it is not affected by the size of the dust in mounting, and the operation of the guard arm is free from twisting or gouging. The purpose of the present invention is to provide a smooth and easy attachment of the lock box and the strike to the door and the door frame.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is directed to an inner free side end of an inward opening door.
It is imposed on the edge, extends beyond the dust and extends in the direction of the door frame, and partially
Is on the side of the lock box that covers the inside of the door frame,
Is formed to expose a part of the
On one of the parts of the lock box facing up and down
It is guided movably in the vertical direction along with the unlocking position of the stored state, the guard arm operating position of the semi-projected state into the cutout , and the maximum driving over three positions of the locking position
The dead bolt is provided, whereas, in a portion aligned with notch closing time lock box of the strike that is fixed to the door frame, the chamber
A protruding piece that protrudes inward and has an opening for locking
Extends in the horizontal direction and swings the base end strike
A guard arm that is movably pivoted is vertically connected,
The tip of the dead bolt is inserted into the base end of this guard arm
When a guard arm actuating hole of the size
Both are connected to this and the width of the deadbolt tip is narrowed.
A long hole is formed in the length direction that can slide on
Specifications of the piece, guard arm and deadbolt and mutual position
When the door is closed, the protruding piece and the base end of the guard arm are
Freely fits into the notch and engages, locking engagement hole, guard arm
Actuating entry holes and dead bolts are aligned in the horizontal projection plane.
And the dead bolt activates the guard arm
When in the position, its tip engages only the guard arm,
When the deadbolt is in the locked position, the guard arm guard
Lock arm for locking the protruding piece through the arm for actuation of the arm
Is set so as to engage with .

[0006]

When the door is freely opened and closed, the dead bolt, which is displaced and guided in the lock box in the vertical direction (vertical direction) in FIG.
As shown in FIGS. 3 to 7 and FIG. 7, the storage position is in the unlocked position.

Therefore, when the door is closed with the dead bolt stored, the locking engagement hole of the strike protrusion located in the notch of the lock box and the guard arm operation engagement hole provided on the base end side of the guard arm. , The tip of the dead bolt is of course not engaged.

Therefore, the thumb turn on the indoor side is for example 45
When the dead bolt is protruded to the guard arm operating position in the semi-projected state by operating the rotation degree and the appropriate linkage mechanism,
As shown in FIG. 8, the tip of the dead bolt is engaged with the guard arm actuating engagement hole of the guard arm.

When the door is opened in this state, the dead bolt on the door slides along the elongated hole from the engagement hole for operating the guard arm, and swings the guard arm in the horizontal direction (horizontal direction) with the vertical axis. Let it.

Then, as shown in FIGS. 4 and 5, the dead bolt reaches the end of the long hole and limits the half-open state of the door to a predetermined opening angle. Here, confirmation of visitors, delivery of mail, and the like are performed.

To lock the door, after the door is closed, a key on the indoor side is turned, for example, by 90 degrees, and as shown in FIGS.
As shown in the figure, the deadbolt penetrates the guard arm operating engagement hole of the guard arm in the notch of the lock box, and reaches the maximum protruding state, and the strike engagement piece fixed to the door frame is locked. Is engaged. Here, the door is kept in a locked state that is immovable with respect to the door frame.

Needless to say, to release the guard arm operating state of the door or the locked state of the door, the thumb turn or the key may be operated in the opposite direction to that described above.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A guard arm lock according to the present invention will be described below with reference to an embodiment shown in the drawings. In the drawings, FIGS.
3 and 7 show an unlocked state in which the door can be freely opened and closed, and FIGS. 4, 5 and 8 show an operating state of the guard arm.
9 shows a locked state of the door.

In FIGS. 1 to 3 and 7, reference numeral 1 denotes an inward-opening door, 11 denotes an exterior side of the door 1, 12 denotes an interior side of the door 1, 13
Is a free side edge of the door 1, 2 is a fixed door frame, 21 is an outdoor side of the door frame 2, 22 is an indoor side of the door frame 2, and 23 is a step to which the door 1 contacts when the door is closed. I have.

The lock box 3 fixed to the indoor side 12 of the inward opening door 1 by imposing with screws 91 is a free side edge 13 of the door 1.
Is positioned on the side having the cut-out portion 31 of the lateral shaped form is that (horizontal direction) in an opening formed in example cuboid fits in. The lock box 3 switch the notch 31 from the free side edge 13 of the door 1
It is fixed at the position where it protrudes to a position that covers the door frame over the door frame .

The lock box 3 has an exterior cylinder lock 41 into which a key (not shown) is inserted, and an interior thumb turn 42.
And they are associated with the dharma assembly 51.

Referring to FIGS. 7 to 9, reference numeral 61 denotes a dead board integrally connected to the dead bolt 6 by a stud 62 or the like. To slide.

The joined dead bolt 6 and dead board 61 have a generally upward U-shape in side view. As the sliding guide means of the dead board 61, a known guide means such as a combination of a guide slot 33 or a guide slot provided in the side plate 32 of the lock box 3 and a pin 63 fixed to the dead board 61 is employed.

The vertical advance of the dead board 61 is caused by the first contact portion 64 of the dead board 61 in which the first cam 52 and the second cam 53 assembled to the above-mentioned dharma assembly 51 have a U-shaped cross section. It is achieved by contacting the second abutting portions 65, respectively, and the dead board 6
1 is retracted when the first cam 52 is moved backward to the third contact portion 6.
6 is achieved.

In short, the dead bolt 6 including the dead board 61 is rotated by the thumb turn 42 or the key to rotate the darma assembly 51, the first cam 52 and the second cam 52.
The unlocked position in the retracted state (see FIG. 7), the guard arm operating position in the semi-extended state (see FIG. 8), and the locked position in the maximum extended state (see FIG. 9) via the linkage mechanism 5 including the cam 53 and the like.
It is operated in the vertical direction (vertical direction) over the three positions.

Reference numeral 34 denotes the dead bolt 6 formed in the notch 31.
Reference numeral 35 denotes a through hole provided in the lock box 3 so as to protrude into the lock box 3, and 35 denotes a receiving hole provided in the lock box 3 to which the tip of the dead bolt 6 is fitted when the dead bolt 6 is maximally protruded.

The first contact portion 64 is formed on one side plate of the dead board 61 having a U-shaped cross section, and the second contact portion 65 is formed on the other side plate of the dead board 61. In the space of the dead board 61, a stopping means 10 for preventing the dead bolt 6 from being intentionally pulled out at the guard arm operating position (FIG. 8) is provided.

The stop means 10 is mounted on the dead board 61 by means of a torsion spring 102 which urges the rocking plate 101 urged in the direction in which the locking portion 103 engages with the corresponding portion 36 of the lock box 3 on the horizontal shaft 10.
In the guard arm operating position, the locking portion 103 of the swing plate 101 is engaged with the corresponding portion 36, and when the dead board 61 further advances toward the locking position, Before the second cam 53 comes into contact with the second contact portion 65 of the dead board 61, the second cam 53 comes into contact with the swinging plate 101 to release the engagement of the stopping means 10.

The thumb turn 42 is used for sliding in both the forward and backward directions at the storage position of the dead board 61 carrying the dead bolt 6, the backward sliding at the guard arm operating position, and the forward and backward sliding at the locking position. Unless operated, each can be blocked and held at each position because of the abutment at the start or end of the guide means and the abutment of the dead board 61 of the first cam 52 or the second cam 53. This is because the contact with 64, 65 or 66 acts as a stopper.

The unlocking position, guard arm operating position and locking position of the dead board 61 including the first cam 52 or the second cam 53 and the dead bolt 6 are near the dharma assembly 51 and near the tip of the dead board 61. Publicly-known click means 50, 60 provided respectively for
Is stably held by Then, the click means 50 and 60 inform the fingers grasping the thumb turn 42 of each position tactilely.

The linkage mechanism 5 for vertically displacing the dead bolt 6 over three positions by the operation of the thumb turn is not limited to the illustrated example. If various conventional linkage mechanisms used for bolts are set by changing the direction by 90 degrees, it can be adopted also in the guard arm lock of the present invention.

On the indoor side 22 of the door frame 2, a plate-shaped strike 7 integrally or separately provided with a projecting piece 71 protruding toward the indoor side in the horizontal direction (horizontal direction) is screwed with a screw 92.
Fix by imposition. The strike 7 is attached to an arbitrary position in the door frame 2 such that the protruding piece 71 is loosely fitted in the notch 31 of the lock box 3 when the door 1 is closed.

The protruding piece 71 is provided with a vertical locking engagement hole 72 with which the dead bolt 6 can be engaged in the maximum protruding state when the door is closed.

On the indoor side 22 of the door frame 2, a swingable guard arm having a base end pivotally mounted on a vertical axis 84 (vertical axis) via a mounting piece (71) fixed to the door frame 2 is provided. 8 is provided.

In the example shown in FIG. 1 (see FIG. 1), the base end of the guard arm 8 is pivotally connected to a mounting piece also serving as the projecting piece 71 of the strike 7 with a longitudinal axis 84. ) May be provided at another place of the door frame 2 as a separate body from the strike 7.

In the figure, reference numeral 73 denotes a semi-cylindrical spacer formed integrally with the strike 7 and the protruding piece 71 and having a vertical axis 84 penetrating therethrough.

The base end of the guard arm 8 is aligned with the locking hole 72 of the projecting piece 71 of the strike 7 on the horizontal projection plane when the door is closed, and the dead bolt 6 can be engaged in a half-projected state. A vertical guard arm actuating engagement hole 83 is provided.

The guard arm 8 is provided with an elongated hole 86 which is continuous with the engagement hole 83 for operating the guard arm and extends toward the distal end along the longitudinal direction of the guard arm 8.

When the door 6 is closed and the dead bolt 6 is projected to the maximum projecting state, it engages with the locking engagement hole 72 and the guard arm operation engagement hole 83 as shown in FIG.
The door 1 is locked to the projection 71 of the strike 7. At this time, the guard arm 8 cannot be operated, of course.

As shown in FIGS. 1 and 7, when the door is closed in the unlocked state in which the dead bolt 6 is housed, both the protruding piece 71 of the strike 7 and the base end side of the guard arm 8 are formed by the cutouts of the lock box 3. 31 is loosely fitted and engaged .

[0036] Here, the base end side of the guard arm 8, loosely fitted in the side near the through hole 34 of the lock box 3 and about the longitudinal direction, i.e., the side closer to the tip of the dead bolt 6, the cutout portion 31 Is done.

When the guard arm in which the deadbolt 6 is in a semi-projected state is operated, as the door 1 is opened, the deadbolt 6 extends from the engagement hole 83 for operation of the guard arm 8 to the elongated hole 86, and follows the elongated hole 86. Sliding the guard arm 8
As shown in FIGS. 4 and 5, the dead bolt 6 reaches the end of the elongated hole 86 to limit the door 1 to a predetermined half-open state.

The portion 68 in which the dead bolt 6 having a circular cross section slides with the elongated hole 86 of the guard arm 8 is formed with the tip head 67 and the trunk 69 corresponding to the width of the elongated hole 86 of the guard arm 8. Although the diameter is formed smaller than the diameter, this structure is adopted to prevent the guard arm 8 engaged with the dead bolt 6 from being illegally removed from the outdoor side when the guard arm is operated. It is.

The dead bolt 6 in the illustrated example is formed by cutting the lock box 3.
The guard arm can be projected to the guard arm operating position or the locking position by displacing the notch 31 upward. However, the guard bolt can be displaced downward by displacing the deadbolt downward with only a slight design change. It may also be possible to project into a locking or locking position.

In order to position the guard arm 8 provided to be able to swing with respect to the door frame 2 at a predetermined position when unlocked, a guard arm 8 is provided between the base end of the guard arm 8 and the mounting piece (71). A well-known click means comprising a compression spring, a sphere and a concave portion into which the sphere fits, or a well-known positioning means comprising a stopper and a torsion spring for urging the guard arm in a direction in which the stopper comes into contact with the stopper may be provided. It goes without saying that it is good.

[0041]

According to the guard arm lock of the present invention described above, the guard arm is not provided along the dust portion between the door and the door frame, but is provided horizontally (horizontally) on the indoor side of the door frame. Direction), so that it is not necessary to consider the dust method at all, and the operation of the guard arm can be made extremely smooth without twisting or digging. It works.

Furthermore, since the mounting of the lock box to the door and the mounting of the strike to the door frame can be performed without requiring any dug portions, the work of mounting the entire guard arm lock at the site is significantly improved. I will do it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an unlocked state in an embodiment of a guard arm lock of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a front view thereof as viewed from the line III-III in FIG. 2;

FIG. 4 is a perspective view of the guard arm in an operating state.

FIG. 5 is a plan view thereof.

FIG. 6 is a plan view of the lock box in a locked state with a part of the lock box cut away.

FIG. 7 is an enlarged partial longitudinal side view when the door is closed in an unlocked state, showing a relationship between a lock mechanism, an engagement hole of a strike protrusion, and an engagement hole of a guard arm.

FIG. 8 is an enlarged partial longitudinal side view of the guard arm when the door is closed in an activated state.

FIG. 9 is an enlarged partial longitudinal side view of the locked state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Door 12 Indoor side 13 Free side edge 2 Door frame 22 Indoor side 3 Lock box 31 Notch 42 Thumb turn 5 Linkage mechanism 6 Deadbolt 7 Strike 71 Protrusion piece 72 Locking hole 8 Guard arm 83 Guard arm operation Inlet 84 Vertical axis 86 Slot

Claims (2)

(57) [Claims] An inner door is provided with an edge on an inner free side edge thereof.
It extends in the direction of the door frame beyond Chile, and partly inside the door frame.
A part of the door frame is exposed on the side of the lock box that covers
To form a notch, and face up and down with the notch
One side of the lock box, along the length of the lock box
In addition to being guided movably to the unlocked position of the storage state,
Dead driven in three positions: the guard arm operating position in the semi-projected state into the notch, and the locking position in the maximum projected state
Bolts, while closing the strike secured to the door frame
The part that matches the notch of the door lock box protrudes in the indoor direction.
And a protruding piece with an opening for locking, and extending horizontally
And pivotally pivot the base end to strike through the mounting piece.
The guard arm is connected vertically to the guard arm.
Large enough to allow the tip of the dead bolt to pass through the base end of the
Of the guard arm operation of the
Can be connected to slide the width of the constricted part at the tip of the deadbolt
A slot with a width is formed in the longitudinal direction, while the protruding piece and guard
Door and dead bolt specifications and mutual positional relationship
When the protruding piece and the base end of the guard arm fit loosely into the cutout of the lock box
Locking holes, guard arm actuating holes and
And the deadbolt are aligned in the horizontal projection plane,
When the deadbolt is in the guard arm operating position
The tip engages only with the guard arm, and the dead bolt
When the guard arm is in the locked position, the guard arm operates
Through the locking hole of the projection to engage with the locking hole of the projection.
Guard arm lock characterized by having been set to . 2. The guard arm lock according to claim 1, wherein a mounting piece for pivotally connecting the strike projection and the guard arm is formed integrally.