JP2606856Y2 - Sliding door guard arm device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a guard arm device for a sliding door.

[0002]

2. Description of the Related Art In recent years, a guard arm device for a sliding door in which a so-called guard arm device having a door chain function is applied to a sliding door (hereinafter simply referred to as a guard arm device) has been proposed and put into practical use.

In this guard arm device, as shown in FIG. 1, an engagement pin 1 with a flange is implanted at one end (the lower end in FIG. 1), and the other end is rotatable and swingable. 2, a lock box 3 provided with a guard arm 2 supported by a lock arm, as shown in FIG. 2, an insertion / removal hole 4 through which the engagement pin 1 enters and exits when the sliding door is closed, and the engagement pin 1 slides when the guard arm device operates. And a strike plate 6 in which a movable locking groove 5 is connected.

One end of the guard arm 2 is inserted into a storage groove 9 formed in the front plate 8 of the lock box 3 by the elastic force of a guard arm spring 7 as a compression coil spring wound around the other end. It is biased in the direction of immersion.

When the sliding door is closed, a lock box 3 is placed on one of a pair of frames facing each other (when there are two sliding doors) or a vertical frame of the frame and the door frame (when there is one sliding door), and the lock box 3 is placed on the other. Strike plate 6
When the guard arm device is operated, the guard arm 2 is protruded from the position shown by the chain line in FIG. 1 to the position shown by the solid line in FIG.

Then, the engaging pin 1 of the guard arm is inserted into the insertion / removal hole 4 of the strike, and in this state, when the sliding door is opened, the insertion / removal hole 4 is positioned below the locking groove 5 as in the illustrated embodiment. In this case, the engagement pin 1 slides up with the locking groove 5 and slides up.

When the engaging pin 1 reaches the upper end of the locking groove 5, the sliding door cannot be opened any more.
Alternatively, the degree of polymerization of the two sliding doors is limited. That is, since the opening of the sliding door is limited to a constant value, an effective security device can be added to the sliding door similarly to a conventional door chain.

[0008]

However, in the guard arm device constructed as described above, when the guard arm device is operated from the indoor side, the guard arm device is kept operating. If the housekeeper falls asleep, there is a disadvantage that those who return home are locked out.

It is an object of the present invention to provide a guard arm device that can be released from the outdoor side even if the guard arm device is operated from the indoor side, thereby solving the above-mentioned disadvantages.

[0010]

In order to achieve the above object, the present invention provides a lock box mounted on a frame inside a pair of frames facing each other when the sliding door is closed, or a lock box mounted on a vertical frame of the door frame. A strike plate mounted on a frame facing the front plate of the lock box, wherein an engagement pin with a flange is implanted on an outer surface of one end of the lock box, and the other end is a front plate of the lock box. And one end thereof is guided so as to be able to swing in the front-rear direction perpendicular to the front plate, and one end is urged in a direction of immersion into a storage groove formed in the front plate. A guard arm, and a protruding member that protrudes the guard arm in a direction in which the engaging pin protrudes from the front plate by operating the guard arm from the indoor side. Is inserted and removed, and connected to this insertion and removal hole. In the one formed with the stop groove, the lock box is guided so as to be movable in the front-rear direction through the rear plate on the indoor side of the lock box, the front end is engaged with the protruding member, and the locking pin is provided on the side surface. A push button is provided to be implanted and urged rearward, while being supported near the push button so that one end can rotate in a plane perpendicular to the locking pin,
A hook-shaped free end is provided to guide the plate cam so that it can swing in the thickness direction, and this plate cam is urged in the hooking direction and locked to the outer edge of the hook-shaped free end. A slanted edge is formed obliquely with the movement trajectory of the pin, so that the plate cam rotates in a direction in which the hook is released by a wedge action generated between the locking pin moving forward and the slanted edge, At the inner edge of the hook-shaped bent portion, an inclined piece extending in the front-rear direction and inclined so as to be more distant from the locking pin toward the front is integrally formed, and the other end is the free end of the plate cam from the push button side. A releasing member guided so as to be engageable with the portion and movable in the length direction of the locking pin, and the releasing member is driven by a locking / unlocking member in a direction away from the push button. It is characterized by the following.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A push button for controlling a guard arm device provided on the indoor side and a locking / unlocking member of a sliding door are linked to each other via a plate cam and a releasing member to open the sliding door from the outdoor side. When locking, the guard arm device is released from the operating state at the same time.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 3, reference numeral 3 denotes a lock box, and this lock box 3 is a pair of frames facing each other when the sliding door is closed.
(In the case of two sliding doors) or the vertical frame of the door frame (in the case of one sliding door).

As described above, the guard arm 2 having the engaging pin 1 with a flange implanted on the outer surface of the lower end is housed in the housing groove 9 formed in the front plate 8 of the lock box 3. is there.

In the vicinity of the lower end of the storage groove 9 in the lock box 3, a protruding member 12 having a lower end rotatably supported and having a substantially L-shaped overall shape is provided. Faces the back surface of the guard arm 2 from the opening at the lower end of the bottom surface of the storage groove 9. The projecting member 12 is urged counterclockwise in FIG. 3 by a spring member (not shown).

On the other hand, as shown in FIG. 3, a push button 16 is provided at the rear of the projecting member 12 for controlling the guard arm 2 to be moved in and out of the storage groove 9.

The push button 16 is a block having a rectangular cross section and is held by a holder 17 formed by bending a plate material into, for example, a U-shaped cross section, and penetrates the rear plate 3a of the lock box 3 on the indoor side. And is urged rearward by the elastic force of the restoring spring 18 as a compression coil spring.

A step (not shown) is formed in front of the push button 16, and the projecting member 12 abuts on the step to define a standby position of the projecting member shown in FIG. The lower surface of the push button 16 has a locking pin 19 (FIG. 1).
See).

On the other hand, below the push button 16, a push button 16
, A plate cam 21 is provided.

As shown in FIG. 5, the plate cam 21 is rotatably supported at one end (right end in FIG. 5) so that the hook-shaped free end 21a can swing in the plate thickness direction. The supported plate-like body is urged by the elastic force of the cam spring 22 as a torsion coil spring in a direction in which the free end 21a is hooked, that is, counterclockwise in FIG.

In order to swingably support the plate cam 21, the support shaft 23 is lengthened, one end of the plate cam 21 is loosely fitted to the support shaft 23, and a flange is formed at the lower end thereof (see FIG. 1). 1 and FIG. 3).
The coil portion of the cam spring 22 which has been loosely wound is wound.

As shown in FIG. 5, a slanted edge 21b is formed on the outer edge of the free end of the plate cam 21 so as to obliquely intersect with the movement locus of the locking pin 19.

Further, on the inner edge of the bent portion of the hook of the plate cam 21, the inclined piece 2 is cut and raised from the plate cam.
1c is integrally formed. The inclined piece 21c extends in the front-rear direction (the left-right direction in FIG. 5) and is inclined so as to be more distant from the push button 16 toward the front (rightward) as shown in FIG.

Since the plate cam 21 is constructed as described above, when the push button 16 is pushed forward (to the right) from the standby position shown by the solid line in FIG. When the push button 16 is further pushed forward when it comes into contact with the inclined edge 21b of the end, the wedge action generated between the locking pin 19 and the inclined edge 21b causes the plate cam 21 to move as shown by a chain line in FIG. Is
Against the urging force, the hook is turned in a direction in which the hook at the free end of the hook is released, that is, clockwise in FIG.

Then, as shown by a chain line in FIG.
When 1 is fully rotated in the direction in which the hook is released, the inclined edge 21
The plate cam 21 which has become free from the engagement between the lock pin 19 and the locking pin 19 is disengaged by the urging force of the plate cam 21 in the direction in which the hook at the free end is hooked.
That is, the locking pin 19 is rotated counterclockwise in the figure so as to cut off the retreat of the locking pin 19, and as shown in FIG.
abuts on c.

In this state, even if the finger is released from the push button 16, the finger is locked to the hook of the plate cam 21.
And the push button 16 integrated therewith does not return to the rear.

In this state, as described above, the projecting member 12 projects the guard arm 2 forward, and the guard arm device can be operated.

When the push button 16 is further pushed forward from the position shown in FIG. 5, the locking pin 19 advances while slidingly contacting the side edge of the inclined piece 21c of the plate cam. At this time, the sliding contact between the locking pin 19 and the side edge of the inclined piece 21c moves downward (upward in FIG. 5).

Eventually, the engagement between the locking pin 19 and the inclined piece 21c is released. Then, as shown in FIG. 6, the plate cam 21 is slightly rotated counterclockwise by the urging force. That is, the locking pin 19 rides on the front end of the inclined piece 21c.

When the finger is released from the push button 16 in this state,
The push button 16 and the locking pin 19 integrated therewith are moved rearward by the urging force.

At this time, as shown in FIG.
Due to the wedge action generated between the plate cam 9 and the inclined piece 21c of the plate cam, the locking pin 19 pushes over the free end of the plate cam 21 downward and gets over the hook portion. Then, it returns to the standby position indicated by the solid line in FIG.

Thus, in the embodiment shown in FIG.
The free end of the plate cam 21 is bent into a U-shaped cross section, and the upper end of the release member 24 that extends long in the up-down direction and is movably guided in the same direction is formed by a push button. 16
It can be engaged from the side.

As shown in FIG. 8, the upper end of the release member 24 is bent in a U-shape in cross section, and the U-shaped portion faces the free end of the plate cam 21 as described above. As described above, the lower end of the release member 24 is also bent in a U-shape in cross section, and an inclined cam 24a (see FIG. 3) is formed in a shorter vertical portion of the U-shaped portion.

As shown in FIGS. 3 and 9, the inclined cam 24a is provided with a locking bar 25 opened on the front plate 8 of the lock box.
And at the lower end of the bar hole 27 into which the unlocking bar 26 is inserted,
It is disposed so as to be able to engage with the tip of the unlock bar 26.

As shown in FIG. 3, the release member 24 is urged upward by the elastic force of a push-up spring 28 as a compression coil spring elastically mounted on the lower end thereof.

Although this is not the gist of the present invention, FIG.
The mechanism for locking and unlocking the sliding door shown in FIG.

As shown in FIG. 3, a lock 29 having a substantially C-shape is supported on the lower end of the lock box 3 so as to be rotatable around a lock shaft 31 fixed to the lock box. On the other hand, a pin 32 implanted on the side surface of the hook 29 is engaged with a slider 33 guided in the lock box 3 so as to be movable in the vertical direction.

A locking / unlocking bar 34 having a substantially T-shape is rotatably supported in the bar hole 27, and the inner end thereof is engaged with the slider 33. Therefore, when the unlocking bar 26 is projected, as shown in FIG.
The torso 29 is stored in the lock box.

On the other hand, if the locking bar 25 is projected,
As can be seen from FIG. 7, the locking / unlocking bar 34 rotates counterclockwise, and as a result, the slider 33 descends, so that the stick 29 swings outward and is swung into the stick insertion hole 35 to be locked.

To drive the locking bar 25 and the unlocking bar 26, as shown in FIG.
6 and a pinion 38 connected to the inner cylinder of the cylinder lock 37 (see FIG. 3).

As shown in FIG. 10, a vertically long U-shaped cam hole 39 is opened below the rack 36.
A first operating pin 41 implanted at the outer end of an unlocking L-shaped lever 40 rotatably supported at the center in the vicinity of the rack 36 is slidably engaged with the cam hole 39. ing.

Further, a second operating pin 42 implanted at the base end of the unlocking bar 26 is engaged with an unnumbered long hole opened at the inner end of the unlocking L-shaped lever 40.

Then, the inner cylinder of the cylinder lock 37 (see FIG. 3) is turned in a predetermined direction with
When the 6 is raised, the first operating pin 41 comes into contact with the bottom of the cam hole 39 as shown in FIG. 11, and the unlocking L-shaped lever 40 rotates counterclockwise by further raising the rack 36. Therefore, the first operating pin 41 enters the lower end horizontal bar portion of the cam hole 39.

The unlocking L-shaped lever 40 connected to the rack 36 in this way rotates counterclockwise with the rise of the rack, and releases the unlocking bar 26 as shown in FIGS. It protrudes toward the locking / unlocking bar 34.

Then, as shown in FIG.
Is engaged with the inclined cam 24a of the release member 24, and the release member 24 is lowered by the wedge action generated therebetween.

Then, the free end of the plate cam 21 is lowered to release the locking pin 19 locked up to that time. As a result, the push button 16 moves rearward and the guard arm device is released.

Therefore, even if a housekeeper falls asleep while the guard arm device is operated from the indoor side, there is no possibility that a late returnee will be shut out.

In FIG. 10, reference numeral 43 denotes a first operating pin of the locking L-shaped lever.

In the illustrated embodiment, the release member 24 is driven by the unlocking member. However, the present invention is not limited to the illustrated embodiment, and may be implemented in various modifications. Can be.

For example, while the stirrer and the stirrer mechanism arranged in the lock box 3 are arranged in a frame outside the room,
The tip of the stirrer may be swung down in a counterclockwise direction (not shown), and the tip of the stirrer may move the release member 24 downward.

In addition, various methods for driving the release member 24 can be considered.

[0051]

As is clear from the above description, this invention sets the operating position in the front-rear direction of the push button that projects the guard arm forward in a plane perpendicular to the locking pin implanted in the push button. And a so-called double push mechanism using a plate cam having two degrees of freedom, that is, swinging in the thickness direction of the free end of the hook, and controlling the plate cam from the push button side. Since a release member facing the engagement is provided, and this release member is driven from the outdoor side using a locking / unlocking member,
There is an effect that the guard arm device operated from the indoor side can be released from the outdoor, so-called lock-out can be prevented.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a main part of a guard arm device according to an embodiment of the present invention, showing a sliding door closed.

FIG. 2 is a front view of a strike plate.

FIG. 3 is a cross-sectional view of the sliding door provided with the guard arm device according to the embodiment of the present invention, showing the sliding door closed.

FIG. 4 is an enlarged bottom view of the push button for explaining the operation of the plate cam, wherein a solid line indicates a state before engagement of the locking pin and the plate cam, and a chain line indicates that the plate cam has a hook at a free end by a wedge action. 2 shows a state where it has been rotated in a direction in which the comes off.

FIG. 5 is an enlarged bottom view of the push button for explaining the operation of the plate cam, and shows a state in which a locking pin is locked to a hook of the plate cam.

FIG. 6 is an enlarged bottom view of the push button for explaining the operation of the plate cam, and shows a state in which the locking pin has passed over the inclined piece of the plate cam because the push button has been further advanced.

FIG. 7 is an enlarged side view of the push button unit for explaining the operation of the plate cam, and shows a state in which the locking pin moves over the plate cam and retreats to the standby position.

FIG. 8 is a front view of a release member.

FIG. 9 is a front view of a front plate of the lock box.

FIG. 10 is a diagram showing a drive mechanism of an unlocking bar, showing a standby state.

FIG. 11 is a diagram showing a drive mechanism of the unlock bar, showing a state in which the unlock bar is protruding.

FIG. 12 is a diagram showing a drive mechanism of the unlock bar, showing a state in which the unlock bar is completely protruded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engagement pin 2 Guard arm 3 Lock box 4 Insertion and removal hole 5 Lock groove 6 Strike plate 7 Guard arm spring 8 Front plate 9 Storage groove 11 Frame 12 Projecting member 13 Stopper 14 Connection lever 15 Trigger body 16 Push button 19 Lock Pin 21 Plate cam 21a Free end 21b Inclined edge 21c Inclined piece 22 Cam spring 24 Release member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05C 17/06 E05B 65/08 E05C 17/60

Claims (1)

(57) [Scope of request for utility model registration] 1. A lock box mounted on an inner frame of a pair of frames facing each other when a sliding door is closed or a vertical frame of a door frame, and a strike mounted on a frame facing a front plate of the lock box. A lock pin is implanted on the outer surface of one end of the lock box, and the other end is rotatably supported on the front plate of the lock box, and one end is perpendicular to the front plate. A guard arm guided so as to be able to swing in an anteroposterior direction, and one end is urged in a direction to be immersed in a storage groove formed in the front plate, and the guard arm is operated from the indoor side, A projecting member for projecting in a direction in which the engaging pin protrudes from the front plate; and a strike plate in which the forwardly projecting engaging pin is inserted, and a connecting member provided in connection with the inserting and removing hole. The rear plate on the indoor side of the lock box, , The front end is engaged with the protruding member, a locking pin is implanted on the side surface, and a push button urged rearward is provided. Close to the button, one end is supported so that it can rotate in a plane perpendicular to the locking pin, and a plate cam is provided so that the hook-shaped free end can swing in the plate thickness direction. A bias pin is urged in the direction in which the hook is hooked, and a slanted edge is formed on the outer edge of the free end of the hook to obliquely intersect with the movement locus of the latch pin. The plate cam is rotated in the direction in which the hook is released by the wedge action generated between the inclined edge and the hook, and extends in the front-rear direction on the inner edge of the hook-shaped bent portion. An inclined piece that is inclined so as to be separated is integrally formed, and one end is connected to the free end of the plate cam from the push button side. Possible to face,
A guard arm for a sliding door, comprising a release member guided movably in the length direction of the locking pin, and the release member is driven by a locking / unlocking member in a direction away from the push button. apparatus.