JP3072356B2 - Sliding door electric lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock for a sliding door, and more particularly to an electric lock for a sliding door in which the locking and unlocking operation by an electromagnetic actuator and the manual locking and unlocking operation can be used at the same time, and the operation is ensured. .

[0002]

2. Description of the Related Art Conventionally, as an electric lock for a sliding door, a deadbolt insertion hole is opened at an upper edge of the sliding door, and a door frame driven by, for example, a micromotor is driven at a portion of the door frame that matches the deadbolt insertion hole when the sliding door is closed. In some cases, a dead bolt is provided so as to be movable in the vertical direction, and the sliding door is locked by inserting the dead bolt into a dead bolt insertion hole.

In the electric lock for a sliding door disclosed in Japanese Patent Application Laid-Open No. 61-290176, a hook-shaped broom is swung out of a door frame by utilizing the movement of a sliding door just before the sliding door is closed, and the crab is removed from the door. It is configured so that it is thrown into the opening of the frame and this camera is fixed by a solenoid.

Further, in the electric lock for a sliding door disclosed in Japanese Patent Application Laid-Open No. 62-55383, when one rack is moved by a pair of racks and a gear meshing with these racks, the other rack moves in the opposite direction. When the sliding door is closed, one of the racks is moved up and down by a solenoid, and like a so-called Gremon lock, the operating rods connected to these racks are thrown into the upper and lower openings of the door frame to open the sliding door. Lock.

[0005] In addition, JP-A-62-41880,
Japanese Patent Laid-Open Publication No. Sho 62-78383 discloses a similar electric lock for a sliding door.

[0006]

However, in general, many conventional electric locks for sliding doors use solenoids having a small operating stroke as electromagnetic actuators. In consideration of the play of mechanical parts, stable and reliable operation is achieved. Is difficult to expect.

[0007] An electric lock for a sliding door of the type in which the dead bolt is driven by the above-mentioned micromotor, which is considered to be surely operated, is provided with a dead bolt inserted to prevent dust from entering the dead bolt insertion hole. A hole must be opened in the upper edge of the sliding door, which in turn makes manual locking and unlocking operations inconvenient.

Further, in particular, the above-mentioned Japanese Patent Application Laid-Open No. 61-29017
The electric lock for a sliding door described in Japanese Patent Application Laid-Open No. 6-55383 and Japanese Patent Application Laid-Open No. 62-55383 are not suitable for manual locking / unlocking operation due to its mechanism.

Therefore, it is not an exaggeration to say that electric locks for sliding doors have not been practically used.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric lock for a sliding door which can perform an unlocking operation by an electromagnetic actuator and a manual locking and unlocking operation, and can be expected to operate reliably.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lock box mounted on a door frame of a sliding door, and an inside of the lock box having a front end near a front plate. A hook-shaped clasp rotatably supported and guided vertically movably along the side plate of the lock box, and the end of the clasp side is engaged near the support point of the clasp, and An operating plate connected to the operating member, a connecting rod carried by the operating plate, extending in the front-rear direction perpendicular to the front plate, and guided to be movable in the length direction thereof, and a side plate of the lock box. The trigger rod is disposed substantially in parallel with the connecting rod, is guided so as to be movable in the front-rear direction, and is biased in a direction in which the front end portion penetrates the front plate and projects outward. It is arranged between the trigger rod and the connecting rod, and the center part is rotatably supported on the side plate of the lock box. And a guide bar having one end engaged with the trigger rod and the other end detachably engaged with the connecting rod, a horizontal guide hole opened in the side plate of the lock box, and a front end of the guide hole. An L-shaped control hole having a vertical escape hole, a control pin implanted on a side surface of the connecting rod, penetrating an operating plate and slidably engaging with the control hole, and a lock when the sliding door is closed. A strike plate mounted on a door frame facing the front plate of the box, and an engaging portion that is guided on the back side of the strike plate so as to be movable in the vertical direction and engages with the connecting rod protruding forward. A rack body formed, a drive gear meshing with the rack body, and a micromotor connected to the drive gear via a reduction gear and a clutch, the front plate and the strike plate interfering with a connecting rod moving up and down. The vertical hole was opened to prevent And wherein the door.

[0012]

The electric lock for a sliding door according to the present invention constructed as described above is used by mounting a lock box on a door frame of a sliding door and mounting a strike plate on a door frame facing the door frame.

When the sliding door is open, the front plate of the lock box is separated from the strike plate of the door frame. Therefore, the trigger rod in the lock box projects outward from the front plate by the urging force, and the connecting rod engaged with the other end of the pull lever moves symmetrically with the trigger rod.
It is in the lock box.

At this time, the control rod is implanted in the control rod,
The control pin engaged with the U-shaped control hole is engaged with the rear end of the horizontal guide hole of the control hole, so it works even if you try to move the operation plate from the indoor side via the operation member The board does not move. Therefore, the kama does not move.

When the sliding door is closed, the trigger rod projecting outward from the front plate of the lock box is pushed into the lock box by the front plate of the door frame.

Accordingly, the connecting rod, which is connected to the trigger rod via the extension bar and moves symmetrically with the trigger rod, protrudes outward from the front plate and passes through the vertically elongated hole opened in the front plate. Engage with the engaging portion of the rack body.

At this time, the control pin implanted in the connecting rod slides forward in the horizontal guide hole and is located at the bent portion of the L-shaped control hole. In other words, since the control pin is located at the end of the escape hole that is long in the vertical direction, the operating plate can move in the vertical direction.

After the sliding door is closed, when the operating plate is manually moved up and down from the indoor side via an operating member, the control pin is brought into sliding contact with the escape hole of the control hole, and the connecting rod is moved to the other end of the lever. , The working plate moves in a predetermined direction,
In this process, the end of the operation plate on the side of the stirrer moves the stirrer, swings the stirrer out of the front plate, and throws it into the stirrer insertion hole opened in the strike plate. Therefore, the sliding door can be manually locked.

When the lock is manually performed, since the connecting rod is integrally engaged with the rack body, the rack body also moves in a predetermined vertical direction integrally with the operation plate. Sometimes, the rack body is mechanically separated from the speed reducer and the micromotor by the clutch mechanism, so that no extra load is applied to the hands of the person operating the operation member.

On the other hand, when a positive or negative predetermined voltage is applied to the micromotor for the purpose of locking after the sliding door is closed, the clutch mechanism is operated and the drive gear is connected to the micromotor via the reduction gear and the clutch, and the rack The body is driven in a predetermined vertical direction, that is, a direction in which the operation plate is manually moved.

Then, since the rack body is connected to the operating plate via the connecting rod, the operating plate moves in the locking direction integrally with the rack body, and as described above, the stick is swung out of the front plate to slide the sliding door. Is locked.

As described above, the electric lock of the sliding door locked manually or by the micromotor can be obtained by manually moving the operating plate from the indoor side in the unlocking direction, that is, in the direction opposite to the locking. By rotating the micromotor in the opposite direction to the locking, the operation plate is moved in the unlocking direction, and the stick is swung back into the lock box to unlock the electric lock of the sliding door.

[0023]

An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. 1, reference numeral 1 denotes a lock box, and this lock box 1 is mounted on a door frame 2 of a sliding door as shown in FIG.

As shown in FIG. 1, a lock 4 is provided in the front of the lock box 1 below and near the front plate 3. The kama 4 is a hook-shaped member as a whole, one end (upper end) of which is rotatably supported by a kama shaft 5.
Are guided so as to be rotatable in a plane parallel to the side plate.

On the other hand, below the inside of the lock box 1, there is provided an operating plate 6 which is slidably contacted with the side plate 1a of the lock box and is movably guided in the vertical direction.

In the front of the lower end of the operating plate, a camera driving pin 7 is implanted, and the camera driving pin 7 is
It is loosely fitted in the receiving hole 4a opened in the vicinity. With the above-described configuration, when the operation plate 6 is lowered in the unlocked state of the electric lock of the sliding door shown in FIG. 1, the boom 4 driven by the boom driving pin 7 rotates clockwise with the boom shaft 5 as a rotation axis. As shown by a chain line in FIG. 1, a strike plate 8 (see FIG. 3) which is swung out of the front plate 3 of the lock box and attached to the door frame.
(See FIG. 2), the sliding door is locked.

A protruding piece 6a (FIG. 1) formed below the operating plate 6 protrudes out of the lock box 1 through the cutout portion of the lock box 1, and is formed in an elongated hole opened in the protruding piece 6a. The inner end of an operating member such as a knob (not shown), which is projected on the indoor side surface of the door frame of the sliding door and is movably guided in the vertical direction, is inserted therein. In this way, the operation plate 6 is connected to the operation member on the indoor side, and is configured to be able to move up and down from the indoor side.

Although this is not an essential configuration of the present invention, in the illustrated embodiment, as shown in FIG. 1, an open leg spring 11 is provided as a torsion coil spring. One end of the spring hook pin 1 implanted in the operating plate 6
The other end is rotatably locked to a column 13 implanted in the side plate 1a of the lock box.

For this reason, the leg-spring spring 11 constitutes a kind of thought-point mechanism, and when the operation plate 6 moves beyond the thought-point in the process of moving up and down, the leg-spring which had been acting as a resistance until then. Since the elastic force of the spring 11 becomes an external force for driving the operation plate, the operation plate 6 is provided with a snap action property, so that the movement of the operation plate 6 is improved.

At the upper end of the operating plate 6, a front slope 3
A connecting rod 14 extending in the front-rear direction (the left-right direction in FIG. 1) perpendicular to the front end is carried, and is guided to be movable in the length direction, that is, the front-rear direction.

The connecting rod 14 in the embodiment shown in FIG.
As shown in FIG. 4, the control plate 15 is an elongated plate-like body, and stepped control pins 15 are caulked at two places along the length direction of the horizontal portion so as to penetrate the connecting rod 14.

On the other hand, as shown in FIG. 4, the upper end of the operation plate 6 is bent so as to have a U-shape when viewed from above.
A guide hole 16 formed in the bent portion and extending in the front-rear direction.
The connecting rod 14 is slidably engaged with the end of the control pin 15 so that the connecting rod 14 is guided to be movable in the front-rear direction.

As shown in FIG. 1, at least one side plate 1a of the lock box has a horizontal guide hole 1 long in the front-rear direction.
7, and an L-shaped control hole 19 having a substantially vertical relief hole 18 connected to the front end of the guide hole 17 is opened. At least one small diameter of the control pin 15 is formed in the control hole 19. The ends are slidably engaged.

In the illustrated embodiment, the control hole 19 is designed to be locked when the operating plate 6 is lowered.
Has an inverted L-shape, but it is also possible to design the lock by pushing up the operation plate 6, and in this case, the control hole 19 becomes an L-shape.

On the other hand, a trigger rod 21 is provided at the upper end of the lock box 1 as shown in FIG. The trigger rod 21 is an elongated member extending in the front-rear direction, and is guided on the side plate 1a of the lock box so as to be movable in the front-rear direction independently of the operation plate 6, and is provided with a compression coil elastically mounted at its rear end. The front end portion is urged in a direction to penetrate the front plate 3 and protrude outward by the elastic force of the trigger spring 22 as a spring.

On the other hand, the trigger rod 21 and the connecting rod 1
4, a suspension lever 23 is provided. The suspension lever 23 is a substantially linear plate-like body, and its center is located at the side plate 1 of the lock box.
a is rotatably supported.

Connecting pins 24 are implanted at both ends of the extension lever 23. One connecting pin 24 is inserted into a U-shaped unnumbered receiving groove formed below the trigger rod 21 and the other is connected to the other. The connecting pins 24 are respectively engaged with U-shaped receiving grooves with chamfers formed above the connecting rod 14.

In particular, since the receiving groove of the connecting rod 14 is formed with a chamfered portion, the connecting pin 14 can be engaged and disengaged even if the connecting rod 14 moves up and down integrally with the operating plate 6.

The lever 23 in the embodiment shown in FIG.
1 is urged in the counterclockwise direction in FIG. 1 by the elastic force of the urging spring 25 as a torsion coil spring, one end of the extension lever 23 is engaged with the trigger rod 21, and As long as the trigger rod 21 is biased forward,
It goes without saying that the suspension lever 23 is also urged in the counterclockwise direction, so the urging spring 25 is not an essential component of the present invention.

On the other hand, as shown in FIG. 1 and FIG. 2, the door frame portion facing the front panel 3 of the door frame when the sliding door is closed,
The strike plate 8 and the trowel 26 integrated with the strike plate 8 are mounted.

A micromotor 27 is mounted on the upper part of the troyoke 26 with its output shaft facing downward. The micromotor 27 is mounted on the back side of the strike plate 8 below the micromotor 27 and on the back plate 26a of the troyoke 26. Along each, the first
And second rack bodies 28 and 29 are provided so as to be movable in the vertical direction.

A connecting gear 30 is provided between the first and second rack bodies 28 and 29.
0 always meshes with these rack bodies 28 and 29. Therefore, if one of the first and second rack bodies rises, the other falls symmetrically.

A first gear 31 which is a bevel gear is mounted on the output shaft of the micromotor 27, and the first gear is a second gear which is a large-diameter bevel gear rotatably supported by the troyoke 26. 32 is engaged.

A small-diameter third gear 33 coaxially and integrally connected with the second gear 32 meshes with a drive gear 34. The drive gear 34 does not mesh with the connection gear 30.

Further, the second and third gears 32, 33
The drive gear 34 and the drive gear 34 are rotatably supported by a swing arm 35, respectively. In particular, the drive gear 34 is supported only by the swing arm 35.

The gear train from the first gear 31 to the drive gear 34 constitutes a speed reducer and also constitutes a known differential gear mechanism.

Therefore, as shown by arrows in FIG. 1, when the output shaft of the micromotor 27 rotates counterclockwise as viewed from above the troyoke 26, the second and third gears 32, 33 are rotated.
1, the drive gear 34 rotates clockwise, and the swing arm 35 also rotates counterclockwise about the rotation axis of the second gear 32.

As a result, the drive gear 34 comes into mesh with the first rack body, and thereafter the drive gear 34 continues to rotate clockwise, so that the first rack body 28 descends. Then, the second rack body 29 is raised as described above.

Conversely, if the output shaft of the micromotor 27 rotates counterclockwise as viewed from above, the drive gear 34 rotates counterclockwise while the swing arm 35 rotates clockwise. This time, the second rack body 29 engages with the second rack body 29 and descends.

As described above, the gear train including the swing arm 35 operates in the same manner as a speed reducer having a built-in clutch. In other words, these can be replaced with a speed reducer with a clutch.

FIGS. 1 and 3 show the first rack body 28.
As shown in FIG. 5, an engaging portion 36 having a rectangular opening is formed.

The front plate 3 and the strike plate 8 are provided on the front plate 3 and the strike plate 8 in order to avoid interference with the connecting rod 14 moving up and down.
An elongated hole 37 in the vertical direction is open (see FIG. 3).

Although this is not an essential configuration of the present invention, a protection cylinder 38 having a vertically long and narrow rectangular cross section is loosely fitted in the long hole (not numbered) opened in the front plate 3. I have.

The protective cylinder 38 is guided in the lock box 1 so as to be movable in the front-rear direction, and has a side surface extending vertically, as shown in FIG. A slightly inclined cam hole 39 is opened, and the control pin 15 implanted in the connecting rod 14 is slidably engaged with the cam hole 39 (see FIG. 4).

In FIG. 1, reference numeral 41 denotes a permanent magnet,
Reference numeral 42 indicates a reed switch, and the permanent magnet 41 and the reed switch 42 generate a sliding door closing signal. However, since they are not the gist of the present invention, further detailed description is omitted.

An electric lock for a sliding door according to an embodiment of the present invention
With the configuration described above, when the sliding door is open, the trigger rod 21 projects from the front plate 3 due to the elastic force of the trigger spring 22, and therefore, the connecting rod 14 is in a state of being pulled into the lock box. .

At this time, since the control pin 15 implanted in the connecting rod 14 is engaged with the horizontal portion of the control hole 19, that is, the guide hole 17, the operation plate 6 cannot be pushed down.

When the sliding door is closed, as shown in FIG.
The trigger rod 21 is pushed into the lock box 1 while the connecting rod 1
Reference numeral 4 protrudes from the front plate 3 and penetrates an elongated hole 37 (see FIG. 3) opened in the strike plate 8 to engage with an engaging portion 36 opened in the first rack body 28.

When the micromotor 27 is rotated in a predetermined direction in this state, as described above, the swing arm 35 connects the driving wheel train to the first rack body, and the first rack body 28 connects the connecting rod 14. The operating plate 6 is lowered through the door to lock the sliding door.

In the above locking process, when the connecting rod 14 moves down together with the operating plate 6, a wedge action generated between the control pin 15 implanted in the connecting rod and the cam hole 39 of the protection cylinder 38. Thereby, the protection cylinder 38 protrudes outward from the front plate 3 and surrounds and protects the connecting rod 14. Accordingly, it is possible to prevent the connecting rod exposed in the gap (so-called dust) between the front plate 3 and the strike plate 8 from being operated from the outside to prevent unauthorized unlocking.

When the micromotor 27 is rotated to the side opposite to the locking, the driving wheel train is connected to the second rack body 29 in which the swing arm 35 is raised, and this is lowered. Then, the first rack body 28 rises symmetrically, and at the same time, the operation plate 6 also rises to unlock.

[0062]

As is apparent from the above description, according to the present invention, the operating plate for controlling the lock for locking the sliding door can be driven from the front plate side by the micromotor via the clutch and the speed reducer. It is possible to obtain an electric lock for a sliding door that can be operated manually or electrically to lock and unlock the sliding door.

Further, since a micromotor is employed as the electromagnetic actuator, there is no restriction on the operation stroke and there is no structural restriction on the locking mechanism, so that reliability of operation can be expected.

Further, the trigger rod is projected from the front plate of the lock box, and when the sliding door is closed, the trigger rod is pushed into the lock box by the strike plate of the door frame, thereby connecting the connecting rod and the first rod.
Since the rack body is connected to the rack body, various effects such as erroneous operation due to the connection mechanism being exposed to the outside when the door is opened can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electric lock of a sliding door according to an embodiment of the present invention, showing a state where the sliding door is closed and the electric lock is unlocked.

FIG. 2 is a plan view of the electric lock shown in FIG.

FIG. 3 is a front view of a strike plate.

FIG. 4 is a sectional view of a lock box near a connecting rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock box 2 Door frame 3 Front plate 4 Kama 6 Operation plate 7 Kama drive pin 8 Strike plate 9 Kama insertion hole 14 Connection rod 15 Control pin 17 Guide hole 18 Escape hole 19 Control hole 21 Trigger rod 23 Coupling lever 24 Connection pin 27 Micromotor 28 First rack body 37 Slot

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 65/08 E05B 47/00

Claims (1)

(57) [Claims] 1. A lock box mounted on a door frame of a sliding door, a hook-shaped hook which is rotatably supported at one end in front of a front plate near the front side of the lock box, and a lock box. An actuation plate connected to an operation member on the indoor side, the actuation plate being connected to an operation member on the indoor side while being guided so as to be movable in the vertical direction along the side plate of A connecting rod extending in the front-rear direction perpendicular to the front plate and movably guided in the longitudinal direction, and disposed substantially parallel to the connecting rod on the side plate of the lock box; And a trigger rod whose front end is urged in a direction to penetrate the front plate and protrude outward, is disposed between the trigger rod and the connecting rod, and locks the central part. It is rotatably supported on the side plate of the box, one end is engaged with the trigger rod, and the other end is connected An extension bar removably engaged with the rod, a horizontal guide hole opened in the side plate of the lock box, and an L-shaped control hole having a vertical escape hole connected to the front end of the guide hole; A control pin planted on the side surface of the connecting rod, slidably engaged with the control hole through the operating plate, and a strike plate mounted on a door frame facing the front plate of the lock box when the sliding door is closed. On the back side of the strike plate, a rack body which is guided movably in the up-down direction and has an engaging portion that engages with the connecting rod protruding forward, a drive gear meshing with the rack body, And a micromotor connected to the driving gear via a clutch and a clutch, and a vertically long slot is opened in the front plate and the strike plate so as not to interfere with the connecting rod moving up and down. And sliding door electric lock.