JPH1046884A - Electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of freedom of design of an electric lock by two-dimensionally developing and arranging the inside and outside operation shafts and a thumb-shaft of the electric lock and a cylinder lock along the side plate of a lock case, and connecting these member by connection material. SOLUTION: A latch bolt 2 serving both as a dead bolt and a dead bolt 3 in a lock case 1 are movably guided in the forward and rearward direction perpendicular to the front plate 4 of the lock case 1. The latch bolt 2 is urged in the direction of being projected from the front plate 4 by resiliency of a latch spring. In addition, the latch bolt 2 is sandwiched to vertically arrange inside and outside operation shafts 6, 7, and rotation can be performed in the circumference of a rotation shaft perpendicular to the side plate of the lock case 1. Next, in order to pull the dead bolt 2 in the lock case 1, the dead bolt 3 is driven in the direction of being pulled in the lock case 1 by wedge action produced between the drive pin 22b of the lever and a skew hole 3a formed in the dead bolt when a thumb-turn shaft 8 is operated from the indoor side and a lever 22 is rotated clockwise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock,
In particular, the present invention relates to a new and rational electric lock in which each operation shaft for locking and unlocking operation is made a different axis to increase the degree of freedom of design, and the constituent members are constituted by components that can be manufactured by press working such as cams and levers.

[0002]

2. Description of the Related Art In an electric lock, an unlocking signal is received, and a lock mechanism in a lock box is driven in an unlocking direction by an electromagnetic actuator such as a solenoid, which is energized, and a door is locked to a door frame. The dead bolt and / or the latch bolt which also serves as the dead bolt is driven by an outside operation member such as a handle or a knob on the outdoor side in a direction of being immersed in the lock box and unlocked.

[0003] Normally, an unlocking operation can be performed at any time by an inner operating member such as a handle or a knob provided on the indoor side, regardless of control of a locking mechanism by an electromagnetic actuator.

Further, the electric lock is usually provided with a cylinder lock in case of a power failure or forgetting of a personal identification code.
The locking and unlocking operation can be performed by the inner cylinder of the cylinder lock.

[0005] In addition, a thumb turn is provided on the indoor side corresponding to the cylinder lock, and it is possible to lock and unlock the electric lock by operating the thumb turn.

[0006]

By the way, in the conventional electric lock, although there is no definite rational reason, there are many design examples in which the operation shafts of the outer and inner operation members are coaxially arranged.

Similarly, the rotation axis of the cylinder lock and the operation axis of the thumb turn are usually arranged coaxially.

However, if the outer and inner operating members are arranged coaxially, there arises a problem in manufacturing management that a plurality of operating shafts must be prepared according to the thickness of the door.

If only one kind of long operation shaft for a thick door is prepared, which also serves as a small door, an outer operation member such as a handle or a knob will rise greatly from the door surface in the case of a thin door. Because.

[0010] An anti-panic mechanism is mounted on a lock installed at a door of a building where many people gather. For example, in an emergency such as a fire or an earthquake, the anti-panic mechanism is used.
The dead bolt and the latch bolt in the locked position can be simultaneously retracted by one operation of the outer operation member or the inner operation member.

However, in an electric lock in which the outer and inner operating members are arranged coaxially, since the dead bolt and the latch bolt, which are usually provided at distant places in the lock box, are simultaneously driven in the unlocking direction, the outer operating member is required. Alternatively, a mechanism for transmitting the operation force of the inner operation member in two directions, that is, the thickness direction of the lock box and the spreading direction of the side plate is required, and the mechanism is usually complicated.

The present invention increases the degree of freedom of design by using different operation shafts for the locking and unlocking operations, and also provides a new and rational electric machine in which the constituent members are constituted by parts that can be manufactured by press working such as cams and levers. It is intended to provide tablets.

[0013]

In order to achieve the above object, the present invention provides a lock box which is vertically disposed with a latch bolt serving as a dead bolt urged in a direction protruding from a front plate interposed therebetween. Inner and outer operation shafts rotatably supported around a rotation axis perpendicular to the side plate of the lock box,
A thumb-turn shaft, which is disposed on the opposite side of the outer operation shaft from the latch bolt and parallel to the inner and outer operation shafts and is rotatably supported, is disposed near the thumb-turn shaft, and is provided with a keyhole. A cylinder lock opened on the outer surface, a deadbolt arranged in parallel with the latch bolt near the thumb turn shaft in the vertical direction of the lock box, a first cam integrally mounted on the inner operation shaft, and one end. A first driven roller rotatably supported near the inner operation shaft and engaged with the first cam and pushed in a direction away from the inner operation shaft is provided at a central portion, and the other end is provided with a latch bolt at the other end. A first retractor facing the inner end so as to be engaged, a second cam integrally mounted on the outer operation shaft, and a plate coaxially and rotatably supported by the lock box with the outer operation shaft. Center cam and one end near the outer operation shaft A second retractor having a second driven roller rotatably supported and having a free end engaged with the second cam and pushed in a direction away from the outer operation shaft; The second retractor is coaxially supported at one end, and the other end is engaged with the inner end of the latch bolt so as to engage with the second retractor;
The second edge of the retractor on the side opposite to the second cam
A third retractor having a projecting piece engaged with a side edge of the retractor, integrally attached to the thumb-turn shaft, and a distal end slidably engaged with an oblique hole formed in the deadbolt; Dharma lever with a first sector gear at the end,
A second sector gear connected to the inner cylinder of the cylinder lock and meshingly engaged with the first sector gear; a base end rotatably supported near a front plate in the lock box; one end of the second sector gear; The other ends of the latch cams are extended so as to be engageable with the center cam, respectively. When the second sector gear rotates in the unlocking direction, the second sector gear engages with the second cam and is driven in the unlocking direction. In the vicinity, a central lever is swingably supported, one end of which is engaged with the actuator of the deadbolt, and the other end of which is engaged with the locking portion of the second cam. A locking lever rotatably supported in the vicinity of the latch bolt, one end of which is urged in a direction to engage the head step of the latch bolt, and the other end of which is engaged with the center cam. And rocking around the center cam A first engaging portion that engages with the other end of the locking lever when the center cam is driven in the unlocking direction and drives one end of the locking lever away from the head step of the latch bolt at a portion facing the lever; The third part around the center cam facing the third retractor
The second engaging portion, which is a projection that engages with the concave portion formed in the retractor, has a portion facing the dharma lever of the center cam, and the dharma lever is unlocked when the center cam is driven in the unlocking direction. The third engagement portion, which is driven in a direction opposite to the other end of the latch cam of the center cam, receives the swing in the unlocking direction of the latch cam and converts it into a driven operation in the unlocking direction of the center cam. Each part is formed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. In FIG. 1, reference numeral 1 denotes a lock box, in which a latch bolt 2 and a dead bolt 3 serving also as a dead bolt are arranged in a front-rear direction perpendicular to a front plate 4 of the lock box (see FIG. (Left / Right direction).

The latch bolt 2 is urged in a direction to protrude from the front plate 4, that is, leftward in FIG. 1 by the elastic force of a latch spring as a compression coil spring, not shown for clarity of the drawing. .

The latch spring is fixed in the lock box 1 and slidably engages with the latch rod 2a.
And a latch rod 2a between the head and the latch bolt.

Inside the lock box 1, inside and outside operation shafts 6 and 7 are arranged vertically with the latch bolt 2 interposed therebetween.
Each is guided so as to be rotatable around a rotation axis perpendicular to the side plate of the lock box.

At the indoor end of the inner operating shaft 6, that is, at a portion protruding from the door surface toward the indoor, an inner operating member such as a knob or a handle is similarly provided at the outer end of the outer operating shaft 7. Are equipped with outer operation members such as knobs and handles.

A thumb-turn shaft 8 is provided below the outer operation shaft 7, and a cylinder lock is provided below the thumb-turn shaft 8.
Each is arranged and guided so as to be rotatable around a rotation axis perpendicular to the side plate of the lock box 1.

In FIG. 1, the cylinder lock is not shown directly, but the presence of the cylinder lock is indicated by the illustration of the clutch plate 9 which engages with the tailpiece mounted on the inner cylinder of the cylinder lock. .

Although this is not an essential component of the present invention, the thumb turn shaft 8 is provided near the inner end of the dead bolt 3, and a U-shaped notch formed at the inner end of the dead bolt 3. Is to avoid the interference of the deadbolt 3 with the movable character thumb-turn shaft 8 into the lock box.

On the other hand, the first cam 11 is
Are integrally connected. The first cam 11 is a member for retracting the latch bolt 2 into the lock box from the indoor side through a first retractor 12 described below to unlock the electric lock, and as shown in FIG. A pair of camber-shaped cam bodies are integrally connected with the convex curved surface on the outside.

The first cam 11 corresponds to the first cam 11.
Inside the lock box 1 inside the first retractor 1
2 is pivotally supported at one end, which is the upper end, and is swingably guided.

A first driven roller 13 is rotatably supported at a portion facing the first cam 11 at the center of the first retractor 12.

Further, an engaging pin 14 is implanted at the other end, which is a free end of the first retractor 12, and the engaging pin 14 extends below the latch rod 2a. ,
In addition, it faces from the outside via a free end of a third retractor, which will be described later, with a flange 15 which is crimped to an inner end of the latch bolt.

With the above-described structure, the first cam body 11 can rotate the first driven roller 1 even if the inner operation member is rotated clockwise or counterclockwise from the indoor side.
3 is pushed in a direction away from the inner operation shaft 6.

As a result, the first retractor 12 rotates counterclockwise in FIG. 1, and the engaging pin 14 at the other end moves the inner end of the latch bolt rightward through the free end of the third retractor. Press to unconditionally unlock the electric lock.

The first retractor 12 is urged counterclockwise by a torsion spring (not shown), and the first driven roller 13 carried at the center of the first retractor 12 is driven by the first cam 11.
It is supposed that it is always urged to suppress.

On the other hand, as shown in FIG. 1, a second cam 16 is integrally mounted on the outer operation shaft 7.

The second cam 16 includes a third retractor-driving cam portion which is formed by symmetrically connecting a pair of beveled cam bodies similarly to the first cam, and a cam portion for rotating shaft. Lock notch 16a formed at an angular position symmetrical to the part
(See FIG. 1).

A center cam 17 is rotatably supported in the lock box 1 coaxially with the outer operation shaft 7.

As shown in FIG. 2, the center cam 17 has a first engagement portion 17a extending in a clockwise direction from the top to the periphery, and a second engagement portion as a projection, each of which extends in the shape of an arm to be described later. 17b, a plate-like body formed with third and fourth engagement portions.

The center cam 17 has a central opening rotatably fitted to a guide ring (not shown) formed by burring on the side plate of the lock box 1, for example. Can rotate independently of the second cam 16 integral with the second cam 16.

By the way, since a plurality of engaging portions for driving a plurality of members are integrally formed around the center cam 17, the structure as an electric lock is simplified as a whole, but this will become clear later. .

Returning to FIG. 1, a second retractor 18 having a lower end rotatably supported near the outer operation shaft 7 is provided inside the outer operation shaft.

A second driven roller 19, which is engaged with the second cam 16 when it is rotated and is pushed in a direction away from the outer operation shaft 7, is provided on the upper end, which is the free end of the second retractor 18, at the time. Are rotatably supported.

The second retractor 18 is disposed in front of the second cam 16 in FIG. 1, and the second driven roller 19 is required to engage with the second cam. Are shown in FIG. 1 by dotted lines.

On the other side of the second cam 16 opposite to the second retractor 18, in other words, on the lower side of the second cam 16 in FIG. The third retractor 21 is disposed so as to sandwich a part of the second cam 16 together with the tractor.

As shown in FIG. 3, the third retractor 21 is a lever body having a circular arc portion 21a which is joined to the center of the center cam 17 at a side edge facing the outer operation shaft 7, and has a lower end. Is rotatably supported coaxially with the second retractor 18.

As described above, the free end of the third retractor 21 is connected to the engaging pin 14 implanted at the free end of the first retractor 12 and the flange 15 at the inner end of the latch rod 2a. , So as to engage with the inner end of the latch bolt 2.

Further, as shown in FIGS. 1 and 3, a projecting piece 21b is formed integrally with a side edge of the second retractor 18 opposite to the second cam 16 so as to protrude toward the viewer. ing.

Therefore, as is apparent from FIG. 1, the second retractor 18 is sandwiched between the second cam 16 and the protruding piece 21b, and is driven by the second cam 16 to be driven clockwise in FIG. When retracted, the third retractor 21 also rotates integrally clockwise, but when the third retractor 21 is driven by the center cam as described later, the third retractor 21 alone remains clockwise except for the second retractor 18. Rotate.

As shown in FIG. 3, the base of the side edge of the third retractor 21 facing the center cam is
A concave portion 21c is formed, and a second engaging portion 17b projecting from the center cam is engaged with the concave portion 21c.

Therefore, the second engaging portion 17 of the center cam
b becomes one tooth of one gear, while the concave portion 21c of the third retractor acts in the same way as the inter-tooth space of the other gear, and the center cam 17 and the third retractor 21 rotate relative to each other. Communicate each other.

In FIG. 1, the second engaging portion 17b of the center cam and the concave portion 21c of the third retractor are not numbered in order to avoid complicating the drawing.

On the other hand, as shown in FIG. 1, a dharma lever 22 is integrally mounted on the thumb turn shaft.

The dharma lever 22 is a long arm-shaped block body provided with a first sector gear 22a at a base end thereof. It is slidably engaged with the hole 3a.

Therefore, when the dharma lever 22 rotates clockwise in FIG. 1, the dead bolt 3 is pulled into the lock box 1 (see FIG. 6).

By the way, since the lower end of the oblique hole 3a is vertical, the dead bolt 3 is fixed to the front plate 4 of the lock box.
In the locked state protruding from the drive pin 2, the locking force of the dead bolt 3 is
2b, carried on the thumb turn shaft 8 via the dharma lever 22.

In FIG. 1, reference numeral 23 denotes a click spring. The click spring 23 engages with a mountain-shaped spring hooking projection 22c protruding from the dharma lever 22 to provide a snap action to the operation of the dharma lever 22. Give.

On the other hand, a second sector gear 24 is coaxially and integrally connected to the clutch plate 9 below the thumb turn shaft 8, and the second sector gear 24 meshes with the first sector gear 22a. Have a match.

As shown in FIG. 1, a latch cam 25 is provided below the lock box 1 in the vicinity of the front plate 4.

The latch cam 25 in the illustrated embodiment is
The whole shape is a substantially inverted Y-shaped plate-like body, and the right end thereof is rotatably supported by the side plate of the lock box 1.

The lower right end, which is one end of the latch cam 25, extends into the rotation locus of the second sector gear 24 so as to be able to engage with it.

Further, the upper end, which is the other end of the latch cam 25, is connected to the fourth engaging portion 17d of the center cam (see FIG. 2).
From the outside, that is, from the left side.

With the above configuration, when the second sector gear 24 is rotated in the unlocking direction by a key, for example, in the counterclockwise direction in FIG. 1, one end of the latch cam is driven by the second sector gear 24. , The latch cam 25 rotates clockwise, and the upper end, which is the other end, pushes the fourth engagement portion 17d of the center cam to the right, so that the center cam 17 rotates in the unlocking direction, that is, the counterclockwise direction. I do.

On the other hand, a swing lever 26 for electrically controlling the locking of the second cam 16 mounted on the outer operation shaft 7 is pivotably supported above the lock box.

The lower end of the U-shaped notch of the lever 26 is engaged with a link pin 28 (see FIG. 4) of a lock piece 27 shown in FIGS.

The lock piece 27 is guided by an elongated hole (not shown) opened in the side plate of the lock box so that the steps formed above and below the lock piece 27 are in sliding contact with the inner surface of the side plate of the lock box. In FIG. 1, it can be moved left and right.

Then, the lock piece 27 is moved to the second cam 16.
Is engaged with the lock notch 16a of the electric lock. In this case, even if the knob or handle is turned from the outside of the room, the second cam 16 integrated therewith is locked by the lock piece 27. Since it does not move, this electric lock cannot be unlocked from outside.

To unlock this electric lock, the lever 26
Need to be rotated clockwise to remove the lock piece 27 from the lock notch 16a of the second cam by the movement of its lower end.

At the time of unlocking, the upper end of the extension lever 26 is normally driven to be pushed rightward in FIG. 1 by, for example, a plunger of a solenoid. In the illustrated embodiment, a combination of a motor and a loosely wound coil spring is used. A new electromagnetic actuator is used.

That is, as shown in FIG. 5, the output shaft of the small DC motor 29 has flanges 31a, 31a at both ends.
A spring guide member 31 formed with a is connected coaxially, and a loosely wound coil spring 32 is wound around this spring guide member 31 so as to be movable in the axial direction.

On the other hand, both ends of the sparsely wound coil spring 32 are extended and fitted in slits 33 formed at the upper end of the extension lever 26 and parallel to the side plate of the lock box.

On the other hand, a projection 34 is provided at the center of the body of the spring guide member 31 so as to be able to float between gaps in the coil portion of the sparsely wound coil spring 32.

For this reason, when the motor 29 is rotated, a wedge effect generated between the rotating projection 34 and the coil portion of the loosely wound coil spring 32 causes the wedge effect in FIG. Move to the right.

The spring guide member 3 of the loosely wound coil spring 32
1 along the movement of its two ends via the movement of its two ends.
Is rotated clockwise or counterclockwise, so that the lower end of the lock piece 27 (see FIG. 1) is inserted into and removed from the lock notch 16a of the second cam, and the locking and unlocking of the electric lock is performed. Do.

The applicant of the present invention has disclosed, with reference to Japanese Patent Application No. 8-184175, the electromagnetic actuator shown in FIG.
Since a patent application has been filed independently and is described in detail in this specification, further detailed description will be omitted.

Returning to FIG. 1, a locking lever 35 is swingably disposed near the above-mentioned suspension lever 26.

The locking lever 35 is an L-shaped lever body in the illustrated embodiment, and its bent portion is pivotally supported by the side plate of the lock box.

One end (left end) of the locking lever 35 is formed by a torsion coil spring (not shown).
Are biased in the direction of engagement with the head step.

The other end of the locking lever 35 extends downward, and an arc portion (not numbered) is formed at the inner side edge facing the center cam 17.

When the center cam 17 moves counterclockwise, which is the unlocking direction, the first engagement portion 17a (see FIG. 2), which is the upper end of the center cam 17, slides on the circular arc portion while locking. Drive lever 35 clockwise,
One end is separated from the step of the head of the latch bolt 2 to release the latch bolt 2.

By the way, a certain kind of electric lock drives the other end of the locking lever 35 by an electromagnetic actuator which operates upon receiving an unlocking signal, and engages and disengages one end of the locking lever 35 with the head step of the latch bolt 2. Then, the electric lock is unlocked.

Although this is not an essential component of the present invention, an outwardly biased trigger bolt 36 is provided between the latch bolt 2 and the dead bolt 3 in the lock box.

The trigger bolt 36 is released from the door frame pressed at the time of opening the door and projects outward. The inner end of the trigger bolt 36 moves the lower end of the locking lever 35 outward. As a result of disengagement of the bolt 2 with the step of the head, the latch bolt 2 can temporarily enter into the lock box when the door is closed.

As shown in FIG. 1, the third engaging portion 17c (see FIG. 2) of the center cam is in contact with the projection 22d formed on the dharma lever 22 from the front plate 4 side.

FIG. 1 shows the locked state of the electric lock according to an embodiment of the present invention constructed as described above when the door is closed.

However, the final tightening state using the latch bolt 2 and the dead bolt 3 as shown in FIG. 1 is a carefully locked state, and usually, as shown in FIG. Is used as an electric lock in which the latch bolt 2 also serves as a dead bolt in a state where the lock is retracted.

In order to retract the dead bolt 3 into the lock box, the thumb turn shaft 8 is operated from the indoor side to rotate the dharma lever clockwise.

Then, the dead bolt 3 is driven in the direction of being pulled into the lock box by the wedge effect generated between the drive pin at the tip of the dharma lever and the oblique hole 3a formed in the dead bolt 3.

At this time, the projection 22d formed on the dharma lever 22 moves in a direction away from the third engagement portion 17c of the center cam, and therefore does not exert any external force on the center cam 17. The same applies to other members.

On the other hand, in the locked state shown in FIG. 1, a password is input by a ten-key device (not shown), and when the input password is a valid password, an unlocking signal is generated. Motor 29
Operates, and as shown in FIG. 7, the pull lever 26 rotates clockwise to lock the lock piece 27 engaged with the lower end thereof.
From the lock notch 16a of the second cam.

In the unlocked state of the electric lock shown in FIG. 7, when the outer operation shaft 7 is rotated clockwise from the outdoor side via the handle or the knob, as shown in FIG. The second cam 16 also rotates clockwise.

When the pickup is picked up, the driving force of the second cam 16 is reduced by the second driven roller 19, the second retractor 18,
b to the third retractor 21, and the free end of the third retractor 21 pushes the flange 15 at the inner end of the latch bolt 2 inward.
Pull in.

At the same time, the recess 21c of the third retractor
The second engaging portion 17b of the center cam engaged with the center cam 17 (see FIG. 3) is pushed upward by the opening edge of the concave portion 21c and moves upward. As a result, the center cam 17 rotates counterclockwise. I do.

When the center cam 17 rotates counterclockwise, the first engaging portion 17a at the upper end thereof is
As the other end of the lock lever 5 is pushed, one end of the locking lever 35 moves upward to release the latch bolt 2, so that the latch bolt can be pulled into the lock box 1.

Further, the rotation of the center cam 17 causes the third engagement portion 17 c to move to the projecting portion 2 of the dharma lever 22.
As 2d is pushed into the lock box, the dharma lever 22 rotates clockwise, and as a result, the dead bolt 3 is also retracted into the lock box as described above.

That is, after the electric lock is unlocked, if the outer operating member is operated in the unlocking direction, both the latch bolt 2 and the dead bolt 3 which also serve as the dead bolt are used in the lock box even if the dead bolt is used. Which is nothing but the function of a so-called anti-panic mechanism.

On the other hand, even when the electric lock is not unlocked, the latch bolt 2 and the dead bolt 3 which also serve as dead bolts can be locked in the lock box by operating the inner operation member in the unlocking direction even if the electric lock is not unlocked. Can be retracted inside.

In other words, in the electric lock according to the present invention, the anti-panic mechanism operates also from the inside, and the latch door 2 and the dead bolt 3 are simultaneously moved to the lock box 1 by operating the emergency operation door in the unlocking direction of the inner operation member. It can be retracted inside, allowing people in the room to escape safely outside the room.

That is, when the electric lock is locked as shown in FIG. 1 and the inner operating member is operated in the unlocking direction in the careful locking state in which the latch bolt 2 and the dead bolt 3 are used together, As shown in FIG. 9, the inner operation shaft 6 and the first cam 11 integrated therewith rotate clockwise in the figure.

Then, driven by the first cam 11, the first driven roller 13 and the first retractor integrated therewith rotate counterclockwise, and the engagement pin 14 at its free end is moved to the third retractor 21. The flange at the inner end of the latch bolt 2 is pushed inward through the end of the latch bolt, and the latch bolt 2 is pulled into the lock box.

At this time, since the third retractor 21 simultaneously rotates clockwise independently of the second retractor 18, the center cam 17 is rotated counterclockwise similarly to the anti-panic operation from the outside shown in FIG. And the dead bolt 3 is also pulled into the lock box.

Note that, even when the electric lock is locked, the anti-panic unlocking can be performed at any time from the outdoor side by using the duplicate key of the cylinder lock.

That is, in the locked state shown in FIG.
When the clutch plate 9 is driven counterclockwise by the duplicate key, the second sector gear 24 pushes one end of the latch cam 25 downward as shown in FIG.

Then, the other end of the latch cam 25 pushes the fourth engaging portion 17d (see FIG. 2) of the center cam.
The center cam 17 rotates counterclockwise. If the center cam 17 rotates counterclockwise as described above, the latch bolt 2 and the dead bolt 3 are locked by the operation of the peripheral members. And thus, anti-panic unlocking with the duplicate key is possible.

[0098]

As is apparent from the above description, according to the present invention, the inner and outer operation shafts of the electric lock, the thumb-turn shaft and the cylinder lock are arranged in a plane along the side plate of the lock box. Each member can be connected by a lever or a cam, so that the degree of freedom of design is increased and a reasonable electric lock can be obtained.

Further, since it is not necessary to transmit the operating force in the thickness direction of the lock box, that is, in the thickness direction of the door, various effects such as a reduction in the thickness of the lock box can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a lock box of an electric lock according to an embodiment of the present invention, showing a state in which an electric lock is locked and a dead bolt and a latch bolt protrude from a front plate.

FIG. 2 is a plan view of a center cam.

FIG. 3 is a plan view of a third retractor.

FIG. 4 is a side view of the lock piece.

FIG. 5 is a diagram showing a configuration of an electromagnetic actuator.

FIG. 6 is a side view of the electric lock similar to FIG. 1, showing a state in which the electric lock is locked and a deadbolt is pulled into the lock box.

FIG. 7 is a side view of the electric lock similar to FIG. 1, showing a state where the electric lock is unlocked.

FIG. 8 is a side view of the electric lock similar to that of FIG. 1, showing anti-panic unlocking by the outer operation member when the electric lock is unlocked.

FIG. 9 is a side view of the electric lock similar to FIG. 1, showing anti-panic unlocking by the inside operation member when the electric lock is locked.

FIG. 10 is a side view of the electric lock similar to FIG. 1, showing anti-panic unlocking by a duplicate key when the electric lock is locked.

[Explanation of symbols]

 Reference Signs List 1 lock box 2 latch bolt 3 dead bolt 4 front plate 6 inner operation shaft 7 outer operation shaft 8 thumb turn shaft 9 clutch plate 11 first cam 12 first retractor 13 first driven roller 14 engagement pin 16 second cam 16a lock Stop notch 17 Center cam 18 Second retractor 19 Second driven roller 21 Third retractor 22 Dharma lever 22a First sector gear 22b Driving pin 24 Second sector gear 25 Latch cam 26 Pillar lever 27 Lock piece 29 DC motor 31 Spring guide Member 32 Sparsely wound coil spring 34 Projection 35 Locking lever 36 Trigger bolt

Claims (1)

[Claims] In a lock box, a latch bolt serving as a dead bolt biased in a direction protruding from a front plate is disposed vertically above and below a lock box, and rotates around a rotation axis perpendicular to a side plate of the lock box. An inner and outer operating shaft movably supported, and a thumb-turn shaft rotatably supported on the outer operating shaft opposite to the latch bolt and parallel to the inner and outer operating shafts; It is arranged near the thumb turn axis,
A cylinder lock having a keyhole opened on the outer surface of the door, a deadbolt disposed parallel to the latch bolt near the thumb turn shaft in the vertical direction of the lock box, and a first cam integrally mounted on the inner operation shaft A first driven roller rotatably supported at one end near the inner operation shaft, and a first driven roller engaged with the first cam and pushed in a direction away from the inner operation shaft at a central portion; A first retractor facing the inner end of the latch bolt so as to be engageable, a second cam integrally mounted on the outer operation shaft, and a lock box coaxially and rotatably with the outer operation shaft. A supported plate-shaped center cam, and a second end rotatably supported at one end near the outer operation shaft, engaged with the second cam at the free end, and pushed in a direction away from the outer operation shaft. A second retractor provided with a driven roller, and the second retractor The second retractor is disposed coaxially with the second retractor, and the other end is engaged with the inner end of the latch bolt so as to engage with the second retractor. Is a third retractor having a protruding piece formed on the opposite side edge to be engaged with the side edge of the second retractor, and an oblique hole formed integrally with the thumb turn shaft and having a tip formed in a dead bolt. And a second sector gear coupled to the inner cylinder of the cylinder lock and meshingly engaged with the first sector gear; When the base end is rotatably supported in the vicinity of the front plate, one end is extended to be engageable with the second sector gear and the other end is engaged with the center cam, and the second sector gear is rotated in the unlocking direction. A latch cam that is engaged with this and is driven in the unlocking direction In the vicinity of the latch bolt in the lock box, it is supported a central portion swingably,
One end is engaged with the actuator of the dead bolt, and the other end is engaged with the locking portion of the second cam so as to be engaged with the locking lever. The base end is rotatably supported near the latch bolt, and has one end. And a locking lever having the other end facing the center cam so as to be engaged with the locking step, and a portion facing the locking lever around the center cam. A first engaging portion that engages with the other end of the locking lever when the center cam is driven in the unlocking direction and drives one end of the locking lever away from the head step of the latch bolt; A portion of the periphery of the cam facing the third retractor has a second engaging portion, which is a projection that engages with a recess formed in the third retractor, and a portion of the center cam facing the dharma lever has a center cam. Is unlocked When the third cam is driven in the unlocking direction, the third engaging portion for driving the dharma lever in the unlocking direction is attached to a portion of the center cam facing the other end of the latch cam in the unlocking direction of the latch cam. 4. An electric lock, wherein a fourth engagement portion for converting into a driven operation in an unlocking direction is formed.