JPH0316369Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an electric lock with an anti-panic mechanism (hereinafter simply referred to as an electric lock).In particular, it is equipped with a cylinder lock in case of a power outage, and the cylinder lock is activated in the event of a power outage. The duplicate key keeps the locking member inactive and allows the door to be opened at any time, thereby preventing the occurrence of a panic situation in an emergency such as an earthquake or fire. The present invention relates to an electric lock in which the above-mentioned cylinder lock is prevented from operating in the above condition.

[Conventional technology and problems] Electric locks are more difficult to unlock than mechanical cylinder locks, and they are also easier to centrally control and remotely control using computers, so they have become increasingly popular in recent years. It's here.

However, due to its essential structure, electric locks have the disadvantage that they do not function at all in the event of a power outage. It is no exaggeration to say that power outages are extremely rare accidents, and the power supply system has been in place for some time now.
For example, power outages are unavoidable in emergency situations such as earthquakes and fires. In preparation for such emergencies, some electric locks are equipped with a cylinder lock, but in this case, the resistance against unauthorized unlocking is as low as that of a cylinder lock.

In addition, electric locks with a locking member protruding from the side edge of the door have a locking member that functions as a latch bolt, and are automatically locked when the door is closed. If you open the door with a duplicate key and accidentally close it during evacuation or transporting important documents, the door will become locked and you will have to unlock it again.

[Purpose of invention]

Therefore, the purpose of this invention is to install a cylinder lock in preparation for a power outage, keep this cylinder lock inactive while receiving power, and maintain the resistance of the electric lock to unauthorized unlocking. To provide an electric lock which can maintain an unlocked state with a duplicate key during a power outage, thereby preventing the occurrence of panic in an emergency situation.

[Means for solving problems]

In order to achieve the above object, the present invention is movably guided in the front and back direction perpendicular to the free edge of the door in the lock box, is biased forward, and has an impingement substantially parallel to the door surface. It has a locking member with a latch head attached to the front end, which has a surface and a slope obliquely intersecting the locking surface in front of the locking surface, and when the door is closed, the latch head is locked by the engagement of the slope and the striker of the door frame. In an electric lock that locks automatically when pushed in, the electric lock is rotatably supported on the inside surface of the lock box, has a lock notch and a drive arm on the outer edge, and is connected to the inner cylinder of the cylinder lock. an actuating plate which is pivotally supported substantially in the center so as to be swingable, and has one end facing a part of the locking member so as to be engageable from the front;
A push lever whose other end faces into the rotation locus of the drive arm of the actuating plate; a second electromagnetic actuator that is constantly supplied with power and is separate from the first electromagnetic actuator for electric lock control; is pivotably supported, one end is engaged with the movable part of the second electromagnetic actuator, the other end is engaged with the lock notch of the actuating plate, and this other end is separated from the lock notch. A lock lever is biased in the direction of disengagement, one end is swingably supported near the locking member, and a locking step is formed on the side facing the locking member, and the locking step is A holding member is provided which is biased in a direction approaching the locking member and whose other end is engaged with the movable part of the second electromagnetic actuator, while on the side of the locking member facing the holding member, When the latch head is pushed into the lockbox, it forms a latch step that engages with the locking step, and during power supply, the second electromagnetic actuator operates to lock the other end of the lock lever into the lock notch of the actuating plate. When engaged, the rotation of the actuating plate is prevented and the cylinder lock is kept in an inoperative state, and in the event of a power outage, the holding member is released and the master key of the cylinder lock is moved rearward via the actuating plate's drive arm and push lever. It is characterized in that the pushed locking member is locked by a holding member.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates a lock box, and this lock box 1 is housed, for example, in a lock box cavity (not shown) dug into the free edge of the door and fixed with bolts or the like.

Inside the lock box 1, a locking member, generally designated by the reference numeral 2, is provided so as to be movable in the front-rear direction perpendicular to the free edge of the door, that is, in the left-right direction in FIG. For example, as shown in FIG. 2, this locking member 2 has a first latch board 3 whose overall shape is bent into a substantially U-shape, and a second latch board 4 which is also bent into a U-shape. The front and rear plates of each of the latch boards 3 and 4 are provided with latch rod holes 6 which are rotatably fitted with latch rods 5 (see FIG. 1).

These first and second latch boards 3, 4 are
The second latch board is located between the front plate and the rear plate of the first latch board 3.
Insert the latch board 4 and the four latch holes 6,
6 are joined together in mutual alignment, for example by spot welding.

As shown in FIG. 1, a latch rod 5 has a latch head 7 integrally attached to the front end of the frame body in which the first and second latch boards 3 and 4 are integrally connected.
is inserted from the front, and a latch body 10 bent into a substantially S-shaped cross section is rotatably fitted into the rear end of the latch rod 5 which protrudes rearward from the rear plate of the first latch board 3. A stopper plate 8 is crimped to the rear end of the latch rod 5 to prevent the stopper rod from slipping out of the latch boards 3 and 4, thus forming the locking member 2. . By mounting the latch body 10, a latch stepped portion 10a is formed at the upper rear end of the locking member 2.

Like the head of a normal latch bolt, the latch head 7 has a blocking surface 7a that is substantially parallel to the door surface and engages with the opening edge of a bolt slot opened in a striker (not shown) of the door frame. , the lock box 1 is a block body having a vertical generatrix that is the same as the stop surface and a slope obliquely intersecting with the stop surface 7a in front of the stop surface 7a.
It is supported and guided in a rectangular hole 9a opened in the front plate 9 of the front plate 9 so as to be slidable in the front-rear direction. On the other hand, the second
As shown in the figure, a guide piece 3a is integrally protruded from one side edge of the rear plate of the first latch board 3, and this guide piece 3a has a guide hole that is long in the front and back in the side plate of the lock box. (not shown). As a result, the locking member 2 is guided so as to be movable in the front and rear directions within the lock box 1.

Further, as shown in FIG. 1, a latch spring receiver 11 having, for example, a U-shaped cross section is fixedly installed on the side surface of the lock box 1 so as to interfere with the latch rod 5. A latch spring 12 as a compression coil spring is wound around the latch rod 5 between the latch board 4 and the front plate. Therefore, the locking member 2 is urged forward by the elasticity of the latch spring 12 and seems to come out of the square hole 9a of the front plate, but the locking piece formed on the first latch board 3 3b (see Figure 2) engages with and is locked to the locking pin 13 implanted on the inner surface of the lock box, so the maximum amount of protrusion of the latch head 7 from the front plate 9 is as shown in Figure 1. It is regulated as follows. The latch rod hole 6 (see Fig. 2) is opened in the portion of the latch spring receiver 11 that interferes with the latch rod, and the latch rod 5 is rotatably fitted into this hole. Of course.

Furthermore, since the latch head 7 is integrally connected to the latch rod 5 which is rotatably fitted to the latch boards 3 and 4, when the front plate 9 of the lock box is removed, the latch head 7 can be rotated around the axis of the latch rod 5. Can be rotated freely. Therefore, the abutment surface and the slope of the latch head 7 can change their positions with respect to each other. For example, Fig. 1 is a side view of the electric lock of the present invention, which opens to the left and is attached to the free edge of the outward-opening arc, when viewed from the outside, and in this case, the impact surface 7a of the latch head is in the front. However, the above operation allows you to move the slope toward you.

On the other hand, an electric locking mechanism is provided below the locking member 2. As will become clear later, this electric lock is configured so that it can be attached to either a door that opens to the left or a door that opens to the right by a simple switching operation, but the present invention is applicable to the electric lock mechanism shown in the figure. It is not limited.

The electric lock mechanism is equipped with an elongated plate-shaped retractor 14 as an output member for operating the locking member 2. The retractor 14 has one end rotatably supported by a first support shaft 15, and the other free end thereof extends upward and is formed on the first latch board 3 of the locking member. It is inserted through the insertion notch 3c (see FIG. 2) and faces the rear plate of the first latch board 3 so as to be engageable from the front.

In addition, as shown in FIGS. 1 and 3, this retractor 14 is connected to
One end of the retractor 14 and a reinforcing plate 19 having the same shape are integrally connected to each other while maintaining a mutually parallel position. An operating roller 21 is rotatably fitted on the outside of the first connecting pin 16, and a retractor spring 22 as a torsion coil spring is mounted on the first support shaft 15.
is wrapped. As a result, the retractor 14 moves in the direction in which its free end moves forward, i.e. in the first direction.
Although the actuating roller 21 is biased counterclockwise in the figure,
are engaged with operating cams 23 and 24, which will be described later, and normally maintain the position shown in the first figure.

Near the retractor 14 (see Figures 1 and 3)
In the illustrated embodiment, first and second actuating cams 23 and 24 are stacked in the thickness direction of the lock box 1 between the retractor 14 and the reinforcing plate 19 (at a location that interferes with one end of the retractor 14). They are installed consecutively. As shown in FIG. 1, these actuating cams 23 and 24 each have a concave portion in the rear edge of the lock box 1 that makes elastic contact with the actuating roller 21, and a locking notch 25 in the lower part. As shown in FIG. 3, the plate cams are of the same shape, and boss portions each having an irregularly shaped (square) shaft hole are formed integrally and in a mutually symmetrical direction, with spacer rings 26 interposed between them.
They are supported by the lock box 1 so that they can rotate coaxially and independently of each other. Note that these operating cams 23,
In order to avoid interference with the boss portion of the retractor 24 and to enable rotation of the retractor 14, which will be described later, the retractor 14 and the reinforcing plate 19 are provided with arc-shaped openings.

Further, the first and second operating cams 23, 24
First and second locking levers 27 and 28 corresponding to each other are provided below. These locking levers 27 and 28
4, and 5, the overall shape is approximately linear, and approximately the center portion is pivotally supported by a second support shaft 29, and one end of each The right end in Figure 1) is formed into a hook shape, and the tip thereof is connected to the locking notch 25 of the corresponding operating cam.
It is now possible to engage with Further, the lower edges of the other end of each of the locking levers 27 (28) are bent symmetrically to each other to form a contact surface 31 with the tip of a release screw to be described later (FIG. 5). Furthermore, second spring hook pins 32 and 32 are implanted symmetrically to one end of the locking levers 27 and 28.
One end of a locking lever spring 33 as a torsion coil spring wound around the boss portion of each locking lever 27 (28) is in elastic contact with each of the locking levers 27 (28) from below. is biased counterclockwise, that is, in a direction in which one end thereof engages with the locking notch 25 of the actuating cam 24 .

In addition, a total of two female threaded holes are opened in the lower plate of the lock box 1 that aligns with the contact surface 31 of each locking lever (see Fig. 1), and as will be described later, one of the female threaded holes is opened. In order to fix one end of the locking lever at a release position away from the operating cam and keep the locking lever in an inoperative state, a release screw 30 is screwed into one of the female threaded holes and its tip is used to lock the contact surface 31. It is configured to push.

Furthermore, a first solenoid 34 as an electromagnetic actuator is disposed below the rear surface of the lock box 1. This first solenoid 34 is of a type that attracts the plunger 35 into the coil when it is energized, that is, when activated, and is arranged with the plunger 35 facing downward, as shown in FIG. do. A connecting pin 36 is driven into the tip of the plunger 35, and the connecting pin 36 passes through the plunger 35, with both ends protruding from the outer peripheral surface of the plunger (see FIG. 5).

Further, a drive lever 37 is provided near the locking lever 27 (28). This drive lever 37, as shown in FIGS. 1 and 4,
It is a double lever body of the same shape whose substantially central portion is swingably supported by a third support shaft 38 and integrally connected by a connecting piece 37a, and one end of which is connected to the connecting pin 36 and this. It is connected to the tip of the plunger 35 through engagement with a long groove in sliding contact with the plunger 35, and its double other ends are connected to the second spring hook pins of the first and second locking levers 27, 28, respectively. 32,3
2 so that they can be engaged with each other from above.

On the other hand, an actuating plate 39 is disposed above the lock box 1, as shown in FIG. This operating plate 3
Reference numeral 9 denotes a plate cam that is rotatably supported within a certain angle range on the inner surface of the lock box.A lock notch 39a and a drive arm 39b are formed at the outer edge of the plate cam, respectively, and an opening is provided at the center of rotation. Drilled clutch hole 3
It is connected to a cylinder lock attached to the door via a connection bar (not shown) with an irregular cross section that engages with the lock 9c.

The drive arm 39b of the actuating plate and the rear end of the locking member 2 are linked to each other via a push lever 41. This push lever 41 is
In the illustrated embodiment, the lever body is a substantially linear lever body whose substantially central portion is swingably supported by a fourth support shaft 42, and one end (lower end) of the lever body is connected to the retractor 14 and the locking plate. It is inserted between the second latch board 4 and faces the rear plate of the second latch board 4 so that it can be engaged from the front, and the other end faces the rotation locus of the drive arm 39b of the actuating plate.

Further, behind the actuating plate 39, a second solenoid 43 separate from the first solenoid 34 for controlling the electric lock is provided. Like the first solenoid 34, the second solenoid 43 is of a type that draws in the plunger 35 when energized, but unlike the first solenoid, it is directly connected to a power source so as to be constantly supplied with power. .

A linking pin 44 is driven into the plunger 35 of the second solenoid 43, and the linking pin 44 protrudes from the outer peripheral surface of the plunger. A long groove formed at one end of a lock lever 45, which will be described below, is freely engaged with the linking pin 44.

In the illustrated embodiment, the lock lever 45 includes:
It is a plate-like body having an L-shape as a whole, and its approximately center portion (the bent portion in the illustrated embodiment) is connected to a fifth support shaft 4.
6, and is urged to rotate clockwise by the elasticity of a lock lever spring 47, which is a torsion coil spring. The other end (the upper end in FIG. 1) of the lock lever 45 faces the lock notch 39a of the actuating plate so that it can be engaged with the lock notch 39a, and in the normal state where the plunger 35 is attracted by the second solenoid, the plunger 35 The lock lever 45 is removed by eliminating the elasticity of the lock lever spring 47.
is rotated counterclockwise, and the other end is engaged with the lock notch 39a of the actuating plate.

Further, a holding member 48 is provided below the lock lever 45. As shown in FIGS. 1 and 6, this holding member 48 is a double lever body in which approximately magatome-shaped plates are connected by an engaging piece 48a, and one end (the left end in FIG. 1) is connected to the sixth lever. Support shaft 4
9, and its other end is engaged with the tip of the plunger of the second solenoid 43. For this engagement, for example, as shown in FIG. 6, a cross-shaped notch with one long end is provided in the engaging piece 48a, and the head of the plunger, which is cut into a T-shape, is inserted into the longer notch. This is done by rotating the rear plunger 35 by 90 degrees and locking the engagement piece 48a to the head of the plunger 35 so that it can tilt.

A locking step portion 48 is provided on the lower side of this holding member 48.
a is formed. This locking step portion 48a engages with the latch step portion 10a to lock the locking member 2, and is directed toward the latch step portion 10a by the elasticity of the hold spring 51 as a torsion coil spring. However, in a normal state where the plunger 35 is attracted by the second solenoid 43, the other end of the holding member 48 is biased toward the plunger 35.
As shown in FIG. 1, it is outside the movement trajectory of the latch step 10a.

Although this is not an essential component of the present invention, a security device is provided above the locking member 2 (see FIG. 1). This security device is a precautionary device that prevents the latch head 7 exposed in the gap between the door and the door frame from being unlocked by some method when the door is locked. It is divided into two systems: the electric lock side and the cylinder lock side.

That is, on the electric lock side, the security device has a first security lever 52 that is pivotally supported in a swingable manner and is pushed by a third security lever 55, which will be described later, and urged counterclockwise in FIG. And this first safety lever 5
2, which is also pivotably supported in the center and biased counterclockwise.
The front end of the second safety lever 53 is engaged from above with a first interlocking pin 54 implanted in the rear end of the first safety lever 52 and is locked thereto. The rear end portion engages with the tip of the retractor 14. Then, as shown in FIG. 1, the free end of the retractor 14 does not engage with the locking member 2, and the latch head 7
In the normal state in which it protrudes from the latch head 7, the biasing force of the first safety lever 52 is greater than that of the second safety lever, so the front end of the first safety lever 52 is tilted forward and downward from the upper surface of the latch head 7. Therefore, the latch head 7 cannot be moved back, so that the locked state remains stable.

The safety device on the cylinder lock side includes a third safety lever 55 that is pivotally supported coaxially with the first safety lever 52 and is biased counterclockwise in FIG. It has a security plate 56 which has an open hole and which is loosely fitted into the fourth support shaft 42 .

The front end of the third safety lever 55 is brought into elastic contact with the front bent portion of the first safety lever 52, and the second interlocking pin 57 implanted in the rear end is connected to the safety plate 5.
6 from below.

On the other hand, the safety plate 56 is biased to be pushed diagonally upward by the elasticity of a compression coil spring 59 that is elastically mounted between the safety plate 56 and the sixth support shaft 49. Therefore, the fourth support shaft 42 It is in elastic contact with the lower end opening edge of the elongated hole opened in the security plate 56.

[Effect]

In the electric lock according to an embodiment of the present invention configured as described above, an external operating member such as a knob is connected to an operating cam located on the outdoor side, and an internal operating member such as a knob is connected to the other operating cam located on the indoor side. Use by concatenating.
In the illustrated embodiment, the operating member and the operating cam are connected by fitting a square rod integral with the operating member into a rectangular shaft hole in the boss portion of the operating cam. However, in this case, it goes without saying that the tip of the square bar of one operating member should not come into contact with the rectangular shaft hole of the operating cam corresponding to the other operating member.

As mentioned above, since FIG. 1 is a side view of an electric lock attached to a door that opens to the left and opens outward, it is assumed that the internal operating member is attached to the first operating cam 23.
External operating members are respectively connected to the second operating cams 24 .

The operation members are connected to these operating cams using the lock box 1.
This is done after storing and fixing in the lock box cavity, but prior to this, the first locking lever 27 corresponding to the first operating cam 23 is fixed in an inoperable state. Therefore, as shown in FIG. 1, the release screw 30 is screwed into a female threaded hole formed on the lower surface of the lock box 1 that is aligned with the contact surface 31 (FIG. 5) of the first locking lever 27. The contact surface of the first locking lever 27 is pushed by its tip. Then, the first locking lever 27
It rotates clockwise in the figure, and the hook portion formed at one end of the hook portion is disengaged from the engagement notch 25 of the first operating cam 23.
The first actuating cam 23 becomes free.

Further, after the lock box 1 is attached to the door and before the front plate 9 is attached, the angular position of the latch head 7 is adjusted so that its blocking surface 7a is on the outside. Note that at this time, the latch step portion 10a of the latch body is
It should face upward as shown.

After that, attach the front plate 9 and open the square hole 9.
The positive engagement between latch head 7 and latch head 7 fixes the angular position of latch head 7 and also connects the external and internal operating members to the actuating cam in the lockbox, as described above.

In the electric lock according to the embodiment of the present invention, which is attached to the door as described above, in a normal state without a power outage, the second solenoid 43 is constantly supplied with power as described above. Therefore, the plunger 35
The other end of the lock lever 45, which is drawn into the solenoid 43 and engaged with the plunger as shown in FIG. 1, is engaged with a lock notch 39a in the actuating plate. Therefore, even if the cylinder lock attached to the electric lock is combined and unlocked during power supply, the operating plate 39 cannot be rotated and the locking member 2 cannot be operated.

Furthermore, in the locked state shown in FIG.
Since it is locked in place, it does not move, so the electric lock cannot be unlocked.

On the other hand, when an unlock signal is generated by entering a code using the numeric keypad or by inserting a magnetic card serving as a duplicate key into a card reader, the first solenoid 34 is energized for a certain period of time, and the plunger of the solenoid is activated as shown in FIG. 35 is pulled in and moved upward. Then, the drive lever 37 rotates counterclockwise, and the other end (left end) pushes the second spring hook pins 32, 32 of the first and second locking levers 27, 28 downward. , as described above, the second spring hook pin 3 of the first locking lever 27
2 has already been retracted downward, in this case, only the second spring hook pin 32 of the second locking lever 28 is pushed downward, and therefore only the second locking lever 28 is moved clockwise. The hook portion formed at one end of the second actuating cam 24 comes off from the locking notch 25 of the second actuating cam 24 .

When the external operating member is rotated clockwise or counterclockwise in this state, the second operating cam 24 also rotates together, and as a result, the retractor 14 that has been engaged in the recess of the second operating cam 24 operating roller 21
The retractor 14 rides on either the upper or lower convex portion of the recessed portion (not shown), and the retractor 14 is therefore pushed so as to rotate clockwise in FIGS. 1 and 4.

At the initial stage of rotation of the retractor 14, the rear end of the second safety lever 53 (see FIG. 1) that is engaged with the front end of the retractor 14 is pushed upward, and thus The second safety lever 53 rotates counterclockwise in FIG.
Rotate clockwise. Therefore, the front end of the first security lever 52 springs up, and the latch head 7 can be retracted into the lock box 1.

When the retractor 14 rotates further, its free end engages the rear plate of the first latch board 3 of the locking member 2 from the front, causing it to retreat against the elasticity of the latch spring 12. As a result, the latch head 7 is retracted into the lock box 1, and the door is unlatched to the door frame.
The door can be opened.

When the door is closed after entering the room, the locking member 2 moves rearward due to the wedge action between the slope of the latch head and the striker, and the door is completely closed and the latch head 7 and the striker When the opened bolt slot is aligned,
The latch head 7 is inserted into the bolt insertion slot by the elasticity of the latch spring 12, and relocking is thus performed automatically.

When an internal operating member such as a knob is rotated from the indoor side, the first actuating cam 23 connected thereto is always free from the first locking lever 27 by the release screw 30, so the second actuating The retractor 14 rotates independently of the cam 24 in the same manner as described above.
The door can be opened by retracting the locking member 2 through the .

When the electric lock of the present invention is attached to a door that opens to the right, the mechanism shown in the first diagram is turned over, with the first actuating cam 23 facing outside and the second actuating cam 24 being placed inside, so that the lock can be released before being attached to the lock box. The screw 30 is inserted into a female threaded hole in the lower plate of the lock box that is aligned with the contact surface 31 of the second locking lever 28 to fix the second locking lever 28 in an inoperative state. And before installing the front plate 9,
The direction of the blocking surface 7a of the latch head 7 is set depending on whether the door opens inward or outward. Since the subsequent operation is the same as described above, detailed explanation will be omitted.

On the other hand, in the event of a power outage, the above-mentioned electric lock stops functioning, so the door can be opened using the duplicate key of the cylinder lock as described above to prevent panic.

That is, when a power outage occurs, the power supply to the second solenoid 43 is cut off, and the plunger 35 is pulled out from the second solenoid 43 by gravity and the elasticity of the lock lever spring 47 and the hold spring 51. Then, the lock lever 45 rotates clockwise in FIG. 1, and the other end dissociates from the lock notch 39a of the actuating plate 39 (see FIG. 7), making the actuating plate 39 rotatable.

In this state, insert the duplicate key into the keyhole of the cylinder lock,
When the actuating plate 39 is rotated clockwise in FIG. 1 through the inner cylinder, the safety plate 56 is brought into elastic contact with the tip of the drive arm 39b by the elasticity of the compression coil spring 59.
is moved downward by rotation of the drive arm, and its front end rotates the third safety lever 55 clockwise via the second interlocking pin 57. Then, this third
The second safety lever 53 pushes downward the first interlocking pin 54 implanted in the first safety lever 52 released from the safety lever, and the front end of the first safety lever springs up in the same manner as described above, and the lock is released. The locking member 2 is unlocked.

When the actuation plate 39 further rotates, the drive arm 3
The tip of the push lever 9b engages with the other end of the push lever 41 and rotates it counterclockwise in FIG. Then, one end of the push lever 41 engages with the rear plate of the second latch board 4, pushing the locking member 2 backward against the elasticity of the latch spring 12. At this time, as the plunger of the second solenoid 43 descends, the hold member 48 whose other end is released is free, so that the latch head 7 is completely retracted from the front plate 9 as shown in Figure 7. At this time, the latch step 10a of the locking member 2 is locked with the locking step 48b of the holding member, and this locking of the locking member 2 is maintained even after the duplicate key is pulled out (see FIG. 7). Therefore, the door is in an open state, and unnecessary panic is prevented from occurring in an emergency.

When the power is restored and power is supplied to the second solenoid 43, the solenoid 35 is attracted again, the locking member 2 is released from the holding member 48, and the latch head 7 is moved against the front plate by the elasticity of the latch spring 12. 9, the function of the electric lock is restored, and the other end of the lock lever 45 engages with the lock notch 39a of the operating plate, and the cylinder lock becomes inoperative.

〔effect〕

As is clear from the above description, the present invention provides an electric lock in which a locking member having a latch function is controlled by the action of a latch head formed with an inclined surface.
It is operated by a cylinder lock, a second solenoid that is constantly supplied with power, a holding member that locks the locking member when it is retracted from the front plate, and an actuating plate that is linked to the rotation of the inner cylinder of the cylinder lock. and a lock lever that engages with and locks the lock notch of the actuating plate, the holding member and the locking lever are each controlled by a second solenoid, and the holding member is placed in an inoperative position while power is being supplied. The lock lever is locked in a position where it engages with the operating plate, thereby keeping the cylinder lock in an inoperative state and ensuring the operation of the locking member.In the event of a power outage, the lock lever and holding member are released to free the operating plate. ,
This actuating plate mechanically locks the locking member pushed into the lockbox via the push lever with the holding member, so the door can be opened during a power outage by operating only the master key of the cylinder lock. This has the effect of preventing panic in emergencies such as fires and earthquakes.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional side view of an electric lock with an anti-panic mechanism according to an embodiment of the present invention, Fig. 2 is an external perspective view of a latch board for explaining the structure of the locking member, and Fig. 3 is a retractor and its operation. FIG. 4 is a partially sectional rear view for explaining the configuration of the cam, and FIG. 4 is a partially sectional side view of the main operating part of the electric lock in the unlocked state, with some members cut away. Its bottom view, Fig. 6 is a side view of the holding member, Fig. 7 is a side view of the holding member.
The figure is a side view showing the operating state of the anti-panic mechanism. DESCRIPTION OF SYMBOLS 1... Lock box, 2... Locking member, 3, 4... Latch board, 5... Latch rod, 7... Latch head, 7a... Collision surface, 10... Latch body, 10a
... Latch step, 12 ... Latch spring, 14 ...
Retractor, 21... Operating roller, 23, 24...
...Operating cam, 25...Latching notch, 27, 28...
Locking lever, 31... Collision surface, 34... First solenoid, 35... Plunger, 37... Drive lever, 39... Operating plate, 39a... Lock notch, 3
9b... Drive arm, 41... Push lever,
43...Second solenoid, 45...Lock lever, 48...Hold member, 48b...Lock step.

Claims (1)

[Claims for Utility Model Registration] Inside the lockbox, there is a blocking surface that is biased in the front-rear direction perpendicular to the free edge of the door and is approximately parallel to the door surface, and a blocking surface that is located in front of this blocking surface. It has a locking member having a latch head formed with diagonal slopes attached to the front end, and when the door is closed, the latch head is pushed into the lock box by the engagement of the slope and the striker of the door frame, and the lock is automatically locked. In an electric lock, it is rotatably supported on the inside surface of the lock box, has a lock notch and a drive arm on the outer edge, and has an actuating plate connected to the inner cylinder of the cylinder lock, which is swingable at approximately the center. The lock member is pivotably supported by the locking member, and has one end facing a part of the locking member so as to be engageable from the front.
A push lever whose other end faces into the rotation locus of the drive arm of the actuating plate; a second electromagnetic actuator that is constantly supplied with power and is separate from the first electromagnetic actuator for electric lock control; is pivotably supported, one end is engaged with the movable part of the second electromagnetic actuator, the other end is engaged with the lock notch of the actuating plate, and this other end is separated from the lock notch. A lock lever is biased in the direction of disengagement, one end is swingably supported near the locking member, and a locking step is formed on the side facing the locking member, and the locking step is A holding member is provided which is biased in a direction approaching the locking member and whose other end is engaged with the movable part of the second electromagnetic actuator, while on the side of the locking member facing the holding member, When the latch head is pushed into the lockbox, it forms a latch step that engages with the locking step, and during power supply, the second electromagnetic actuator operates to lock the other end of the lock lever into the lock notch of the actuating plate. When engaged, the rotation of the actuating plate is prevented and the cylinder lock is kept in an inoperative state, and in the event of a power outage, the holding member is released and the master key of the cylinder lock is moved rearward via the actuating plate's drive arm and push lever. An electric lock with an anti-panic mechanism, characterized in that a pushed locking member is locked by a holding member.