JPH03129074A - Electric lock - Google Patents

Abstract

PURPOSE:To permit the locking by a solenoid in a mechanically unlocked state by constituting an electric lock so that the engagement between a slider which is urged in the locking direction and a control body is released when the solenoid conducts, in the mechanically unlocked state. CONSTITUTION:When a solenoid 28 conducts in the state where lock is released by a key or thumb-turn, the fifth engagement part 34 at the top edge of an unlock lever is engaged with the third engagement part 19 of a control body 16, and the movable part of the solenoid 28 is shifted in the direction for turning the control body 16 in the lock release direction. Then, the fifth engagement part 34 shifts along the eighth engagement part 37 of a slider 24, and engaged with the ninth engagement part fixed in a lock box 1. At the same time, the engagement between the seventh engagement part at the top edge of the movable part and the sixth engagement part 36 of the slider 24 is released, and the slider 24 is shifted in a lock direction by the urging force. Then, the engagement between the fourth engagement part 27 of the slider 24 and the second engagement part 18 of the control body 16 is released, and an electric lock acts.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electric lock, and in particular, it is possible to lock and unlock the lock with a key or thumb turn in addition to locking and unlocking with an electromagnetic actuator. This invention relates to an electric lock that enables locking operation using an electromagnetic actuator when unlocking with a thumb turn.

[Conventional technology]

There are various types of locking mechanisms for electric locks.
The electric lock described in Publication No. 55567 uses an electromagnetic actuator to control the latch bolt, which also functions as a dead bolt.If the door is unlocked and the door is closed after entering the room, it can be automatically relocked, making it highly safe. For this reason, they are often used in hotel guest rooms, and because of their relatively simple structure, they are beginning to become popular as electric locks for general household use.

This electric lock has a locking bar that is swingably supported near the latch bolt on the inside surface of the lock box and extends almost parallel to the latch bolt, and the outer end of the locking bar is attached to the tip of the latch bolt. The locking bar is biased in the direction of engagement with the installed latch head, and under normal conditions when no external force is applied to the locking bar, the locking bar prevents the latch head from retracting into the lock box, thereby keeping the electric lock in the locked state. For example, when an unlocking signal is generated by manual code code operation by pressing a button on a so-called numeric keypad, the electromagnetic actuator rotates the locking bar in the opposite direction to the direction in which it is biased, and the outer end of the locking bar is connected to the latch head. By retracting the latch bolt out of the movement trajectory, the latch bolt is freed, thereby unlocking the electric lock while the electromagnetic actuator is energized.

[Problem to be solved by the invention]

However, electric locks configured as described above cannot be unlocked in the event of a power outage, and even when entering or exiting a home for a short time, such as going to the front door to retrieve newspapers or mail, the user must enter the PIN number. Since inputting data is complicated, such electric locks are usually equipped with a dead cam with an actuating arm that can be engaged with the inner end of the locking bar. Controlled by the cylinder lock and from the inside by an operating member such as a thumb turn, the locking bar is locked in the unlocking angle position by the actuating arm, thereby mechanically unlocking the electric lock, and the next key or thumb turn is activated. The unlocked state can be maintained until the lock is operated by someone else.

However, the locking/unlocking operation using the key or thumbturn described above can only be performed at the door, so if you unlock the door using the thumbturn, go to the mailbox to pick up a newspaper, and forget to relock the door using the thumbturn, then enter the room. This has the disadvantage that the electric lock cannot be locked unless the user returns to the doorway, which halves the advantage of electric locks, which allow locking and unlocking to be remotely controlled from inside the room. In addition, mechanically locking such an electric lock with a key or thumb turn means that
In principle, it is easy to unlock an electric lock mechanically locked with a key or a thumb turn using an electromagnetic actuator, since it is necessary to free the locking bar.

The present invention provides an electric lock that can be locked using an electromagnetic actuator when unlocked using a key, thumb turn, etc.
The purpose is to eliminate the above-mentioned inconvenience.

[Means to solve the problem]

In order to achieve the above object, the invention according to claim 1 provides a latch that is guided so as to be movable in the front and back direction perpendicular to the front plate in the lock box, and that the latch head attached to the outer end is guided in the direction in which the latch head protrudes from the front plate. a latch bolt biased forward;
External operating members such as knobs and handles attached to the door and the latch bolt are interconnected, and the latch head is driven into the lockbox against the biasing force of the external operating member. A latch bolt operation mechanism, which extends substantially parallel to the latch bolt, is swingably supported in the vicinity of the latch bolt, and its front end engages with the latch head to prevent it from moving inward into the lock box. a locking bar that is biased in the direction of An unlocking angle change position that engages with a part of the locking bar, rotates in conjunction with the locking bar, and retracts the front end of the locking bar out of the locus of movement of the latch head; and The control body is configured to be able to take a locking angle position that interferes with the movement locus, and is rotatably supported on the side plate of the lock box, and is connected to the inner cylinder of the cylinder lock via the clutch, and the thumb turn on the indoor side. A dead cam integrally formed with an actuating arm and a fourth engaging part facing the second engaging part of the control body so as to be engageable with the second engaging part of the control body, a part of which is connected to the tip of the actuating arm. When the dead cam is rotated, the actuating arm is guided so as to be engaged with the movement of the actuating arm, and when the dead cam is rotated in the unlocking direction, the control body is engaged and rotated in the unlocking direction. At the same time, the slider is biased in the locking direction, and it is disposed so as to partially overlap with this slider, extends in a direction substantially perpendicular to the guide direction of the slider, and has its base end connected to the movable part of the electromagnetic actuator. A fifth engaging part is formed at the distal end to be swingably supported, and is capable of engaging with the third engaging part of the control body, and further maintains an angular position in substantially the same direction as the guiding direction of the movable part. When the unlock lever is energized and the movable part is energized, the fifth
The control body is driven in the unlocking direction via the engaging part, and the movable part is biased in the locking direction.
an electromagnetic actuator formed with a seventh engaging part that engages with a sixth engaging part formed on the slider to lock the slider in the unlocked position; and an electromagnetic actuator that extends in a direction substantially perpendicular to the direction of movement of the slider. When the slider moves in the unlocking direction, it engages with the fifth engaging part at the tip of the unlock lever to rotate the unlock lever, thereby causing the fifth engaging part to engage with the third engaging part of the control body. an eighth engaging part that is moved away from the locking lever; the center part is swingably supported by a slider, one end is engaged with the tip of the actuating arm of the dead cam, and the other end is connected to the fifth engaging part at the tip of the unlock lever. A lock lever with one end shaped so that when the actuating arm rotates in the locking direction, the other end drives the fifth engaging part in the unlocking direction, and the slider The lock box is fixedly installed in the lock box so as to engage with the fifth engaging part of the unlock lever from the control body side when the movable part is moving in the unlocking direction when the electromagnetic actuator is in the locked position and the electromagnetic actuator is energized. A ninth engaging portion.

Further, the invention according to claim 2 is such that the latch head is guided so as to be movable in the front-rear direction perpendicular to the front plate in the lock box, and the latch head attached to the outer end is biased forward in the direction of protruding from the front plate. The latch bolt is connected to an external operating member such as a knob or handle attached to the door, and the latch bolt, and the latch head is pulled into the lockbox against the urging force of the external operating member. The latch bolt operating mechanism extends substantially parallel to the latch bolt, is swingably supported in the vicinity of the latch bolt, and its front end engages with the latch head to move the latch bolt toward the inside of the lock box. a locking bar that is biased in a direction to prevent movement; a locking bar that is rotatably supported at its center near the locking bar; 1. An unlocking angle position in which the engaging portion engages with a part of the locking bar, rotates in conjunction with the locking bar, and retracts the front end of the locking bar out of the locus of movement of the latch head, and the front end of the locking bar. The control body is configured to be able to assume a locking angle position that interferes with the locus of movement of the latch head, and the control body is rotatably supported on the side plate of the lock box and is connected to the inner cylinder of the cylinder lock via the clutch. A dead cam is connected to the thumb turn on the indoor side and has an integrally formed actuating arm, and a fourth engaging part that engages with the second engaging part of the control body is integrally formed, and a part of the dead cam is connected to the thumb turn on the indoor side. When the dead cam is rotated by engaging with the tip of the arm, it is guided so that it can follow the movement of the arm, and when the dead cam is rotating in the unlocking direction, it engages with the control body and rotates it in the unlocking direction. The slider is configured such that it is biased in the locking direction, and is disposed so as to partially overlap with the slider, extends in a direction substantially perpendicular to the guide direction of the slider, and has a proximal end connected to an electromagnetic actuator. A fifth member is supported at the tip of the movable portion of the controller, and faces the tip of the movable portion so as to be engageable with the third engaging portion of the control body.
When the unlock lever forming the engaging part is energized, the movable part drives the control body in the unlocking direction via the fifth engaging part, and the movable part is urged in the locking direction. An electromagnetic actuator has a seventh engaging part formed on the tip thereof that engages with a sixth engaging part formed on the slider to lock the slider in the unlocked position, and the center part is swingably supported by the slider. , one end is engaged with the tip of the actuating arm of the dead cam, and the other end is made to face the fifth engagement part at the tip of the unlock lever, so that when the actuating arm rotates in the locking direction, the other end is engaged with the tip of the actuating arm of the dead cam. 5
It is characterized by having a lock lever whose one end is shaped so as to drive the engaging portion in the unlocking direction.

[For production]

The electric lock according to the invention as set forth in claim 1 configured as described above is in a locked state when the electromagnetic actuator is not energized and the slider is in the locked position. At this time, the fourth engaging portion formed on the slider is connected to the second engaging portion of the control body.
The fifth engaging portion formed at the tip of the unlock lever is spaced apart from the engaging portion and from the third engaging portion of the control body, so that the control body is free. Therefore, the locking bar engaged with the control body and the first engaging portion of the control body is at a locking angle position where the tip thereof interferes with the locus of movement of the latch head due to the biasing force of the locking bar.

At this time, even if the handle or knob is turned, the latch head is locked to the tip of the locking bar and the latch bolt cannot be moved inside the lock box, so the door cannot be opened.

When this electromagnetic actuator is energized during locking, the movable part of the electromagnetic actuator and the unlock lever integrally connected thereto move in the unlocking direction.
The fifth engaging portion at the tip engages with the third engaging portion of the control body to rotate the control body in the unlocking direction. Then, following the rotation of the control body, the tip of the locking bar moves in a direction away from the locus of movement of the latch head against the urging force. Therefore, by turning the knob or handle, the latch head can be removed from the front plate and the door can be opened.

When the electromagnetic actuator is de-energized, the movable part and the unlock lever integrated therewith move in the locking direction in which the fifth engaging part at the tip of the unlock lever separates from the third engaging part of the control body, and the control is activated. The plate becomes free and the electric lock enters the above-mentioned locked state, and this locked state is mechanically maintained by the next energization of the electromagnetic actuator.

When the dead cam is turned in the unlocking direction using a key or thumb turn, the tip of the operating arm that is integrated with the dead cam pushes the slider in the unlocking direction. Then, the slider moves in the direction in which the fourth engaging part engages with the third engaging part of the control body against the biasing force, and as a result, the control body rotates in the unlocking direction and generates electricity. The lock is unlocked. At the same time, a seventh engaging part at the tip of the movable part of the electromagnetic actuator comes into elastic contact with a sixth engaging part formed on the slider,
The engagement of the two locks the slider in the unlocked position, and the unlocked position of the slider is mechanically and stably maintained.

Note that when the slider moves in the unlocking direction, the eighth engaging portion formed on the slider engages with the fifth engaging portion at the tip of the unlock lever.
The engaging portion is pushed and the unlock lever is rotated in a direction opposite to its biasing direction. As a result, the fifth engaging portion separates from the control body.

When the electromagnetic actuator is energized with the lock unlocked by the key or thumb turn as described above, the movable part resists the biasing force and moves in the unlocking direction, that is, the fifth engaging part engages with the third engaging part. At the same time, the control body moves in the direction of rotating the control body in the unlocking direction, but as described above, since the fifth engagement part is separated from the control body by the eighth engagement part of the slider, the movable part Due to the movement, the fifth engaging part moves in the unlocking direction along the eighth engaging part of the slider so as to graze the control body, and engages with the ninth engaging part fixed in the lock box. Together, this ninth
It is locked in the engaging part. At the same time, the engagement between the seventh engagement part at the tip of the movable part of the electromagnetic actuator and the sixth engagement part of the slider is released, so that the slider rapidly moves in the locking direction due to the biasing force. As a result, the fourth engaging part of the slider and the second engaging part of the control body are disengaged, and the control body becomes free, so that the locking bar is moved to the locking angle position by the biasing force thereof. As mentioned above, the unlock lever
Since the fifth engaging part is locked by the ninth engaging part and is separated from the control body, the control body and the locking bar instantly move to the locking angle position without interfering with the fifth engaging part. do. When the power to the electromagnetic actuator is cut off, the movable part and the unlock lever integrated therewith are moved in the locking direction by the biasing force of the movable part. Therefore, the fifth engagement part and the ninth engagement part are disengaged, and the unlock lever rotates in a direction in which the fifth engagement part approaches the rotation center of the control body. As a result of this rotation, the fifth engaging portion returns to the position facing the third engaging portion of the control body, resulting in the aforementioned locked state.

On the other hand, in order to lock an electric lock that has been unlocked with a key or thumbturn, not with the electromagnetic actuator as described above, but with the key or thumbturn, the dead cam is rotated in the locking direction with the key or thumbturn. Then,
The lock lever is rotated by the engagement between one end of the lock lever supported by the slider and the tip of the operating arm of the dead cam.
The other end engages with the fifth engaging portion at the tip of the unlock lever, thereby pushing the unlock lever and the movable portion of the electromagnetic actuator in the unlocking direction against the biasing force thereof. Since the movements of these movable parts and the unlock lever are the same as those of the electromagnetic actuator energized section described above, the fifth engagement part is engaged with the ninth engagement part, and then the sixth engagement part of the slider is engaged. The engagement between the mating part and the seventh engaging part of the movable part of the electromagnetic actuator is released, and the slider moves in the locking direction due to the biasing force, and the fourth engaging part of the slider and the second engaging part of the control body are disengaged. Since the lock is released and the control body becomes free, the locking bar moves to the locking angle position. At the same time, as the slider moves in the locking direction, the engagement between the lock lever and the fifth engaging portion of the unlock lever is released, and the unlock lever and the electromagnetic actuator become free, so that they are moved in the locking direction by the biasing force. Moreover, the engagement between the fifth engagement part and the ninth engagement part is released, and the electric lock is in a locked state.

On the other hand, the electric lock according to the invention according to claim 2 is different from that according to claim 1 in that the unlock lever is fixed to the electromagnetic actuator, and there is no eighth engagement part of the slider, and furthermore, the lock lever is fixed to the electromagnetic actuator. There is no ninth engaging portion that maintains the deviation of the fifth engaging portion caused by movement of the unlock lever in the unlocking direction. All of these omitted configurations prevent the third engaging portion of the control body from interfering with the fifth engaging portion when the electromagnetic actuator locks an electric lock that has been mechanically unlocked with a key or thumb turn. , is for preventing rotation of the control body in the locking direction. Among the functions of the electric lock according to claim 2,
The actions of unlocking with an electromagnetic actuator when the slider is in the locked position, mechanically unlocking with a key or thumbturn, and mechanically locking with a key or thumbturn of an electric lock that is mechanically unlocked are as described above. The function is almost the same as that of the electric lock according to claim 1.

Furthermore, when an electric lock that is mechanically unlocked by movement of the slider in the unlocking direction is locked by an electromagnetic actuator, the movable part moves in the unlocking direction and the sixth engagement part of the slider and the movable part are locked. It is the same as that described in claim 1 until the engagement with the seventh engaging portion is released and the slider moves in the locking direction due to the biasing force thereof. The difference is that even if the slider moves in the locking direction and the control body escapes from the restraint by the fourth engagement part, the fifth engagement part at the tip of the unlock lever interferes with the third engagement part of the control body. The electric lock cannot be locked if the control body is locked in the unlocking angle position.

However, if the power is turned off immediately after the electromagnetic actuator is energized and the slider is released, that is, if a pulse-like operating current is supplied to the electromagnetic actuator, the fifth engaging part of the unlock lever will be connected to the movable part of the electromagnetic actuator. The urging force causes the control body to immediately move in the locking direction, that is, in the direction away from the third engaging portion of the control body, and eventually the control body is moved away from the fourth engaging portion of the slider and also from the fifth engaging portion of the unlock lever. The electrical lock is then released and rotated in the locking direction by the biasing force of the locking bar, thereby locking the electric lock.

〔Example〕

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

In FIG. 1 showing the unlocked state of the electric lock according to claim 1 by the electromagnetic actuator, reference numeral 1 indicates a lock box, and inside this lock box 1, a latch bolt 2 is attached to a front plate 3 of the lock box.
It is guided so as to be movable in the front-rear direction (left-right direction in FIG. 1) perpendicular to . The tip of the latch bolt 2 has a blocking surface that is parallel to the plane of the paper in FIG. A latch head 5 having oblique slopes is attached, and a locking step 6 is formed between the latch head 5 and the main body inside the lock box 1.

The latch bolt 2 is biased in the direction of protruding from the front plate 3 by the elasticity of the latch spring 7 as a compression coil spring, but in a normal state where no external force is applied to the latch bolt 2, the bolt operation member 8 to maintain the position shown in the first diagram.

The bolt operation member 8 has a base end rotatably supported on the side plate of the lock box 1, and an elongated plate-shaped operating part integrally connected to the base end, and the free end thereof That is, the tip of the actuating portion is engaged with the inner end of the latch bolt 2 from the front (left side in FIG. 1).

The bolt operation member 8 also has a drive shaft (not shown) with a square cross section that passes through its base end, the lock box, and the free edge of the door.
is connected to an external operating member such as a knob or handle. Furthermore, although the bolt operation member 8 is biased counterclockwise in FIG. 1 by the elasticity of the return spring 9 as a torsion spring, the stopper is 11.11 is locked in the angular position shown in the first diagram.

With the above configuration, when the bolt operating member 8 is rotated clockwise in FIG. 1 by turning a knob or the like (not shown), the latch bolt 2 is pushed by the free end of the bolt operating member 8.
moves inward to the lock box, and the latch head 5 and strike plate 4
The engagement with the door is released and the door can be opened. On the other hand, when the door is closed with the latch head 5 protruding, the wedge action caused by the engagement between the slope of the latch head 5 and the door frame causes
The latch head 5 is automatically pushed into the lock box, and when the door is completely closed and the latch head and the bolt locking hole of the strike plate are aligned, the latch head 5 is automatically pushed into the bolt locking hole by the elasticity of the latch spring 7. will be put into use. Note that the configuration and function of the latch bolt 2 and the bolt operating member 8 described above are similar to those of a conventional lock latch bolt device, so a more detailed explanation will be omitted.

On the other hand, as shown in FIG. 1, a locking par 12 is disposed near the latch bolt 2. The locking par 12 in the illustrated embodiment is a plate-shaped body whose central portion is bent into a U-shape in cross section in order to increase rigidity, and the locking par 12 is rotatably supported approximately at its central portion by a support shaft 13. The tip of this locking par 12 (left end in FIG. 1) is the locking end 1
4, and the locking par 12 is connected to the above-mentioned support shaft 13.
1, the locking end 14 is separated from the locking step 6 of the latch bolt, and the locking end 14 is away from the locking step 6, as shown in FIGS. 4 and 5. It is guided so as to be movable between the locking angle position where it engages with the portion 6. Further, the locking par is biased in the locking direction, that is, counterclockwise in FIG. 1, by the elasticity of a locking spring 15, which is a torsion coil spring wound around the support shaft 13, for example.

A control body 16 is disposed behind the locking par 12 (to the right in FIG. 1). The control body 16 in the illustrated embodiment is a plate-like body whose overall shape is approximately T-shaped, and is rotatably supported approximately at the center thereof. The parts of the control body 16 that protrude in three directions are first, second, and third engaging parts 17, 18, and 19, respectively, and among these, the elongated hole opened in the first engaging part 17 has an elongated hole. A connecting pin 21 implanted at the rear end of the locking par 12 is slidably fitted therein. With the above configuration, the locking par 12
and the control body 16 rotate in conjunction with each other, and once the angular position of the control body 16 is determined, the angular position of the locking par is uniquely determined.

Further, a dead cam 22 is disposed above the locking par 12 and the control body. This dead cam 22 is
It is connected to the inner cylinder of a cylinder lock (not shown) via a clutch, and is also connected to the thumb turn on the inner surface of the door, and can be rotated at a certain angle by the master key of the cylinder lock from the outdoor side and by hand from the indoor side. It is supported on the side plate of the lock box 1 so that it can be An operating arm 22a is integrally formed on this dead cam 22, and a driving pin 23 implanted at the tip of the operating arm 22a engages with a slider to be described below.

A plate-shaped slider 24 is disposed above the control body 16 so as to partially overlap with the control body 16 . This slider 24 is guided so as to be movable in the vertical direction,
The spring retainer fixed to the bent part of the lower end and the side plate of the lock box is plate 25.
The slider spring 26, which serves as a compression coil spring, is loaded between the two and is biased downward. Also,
A bottle-like fourth engaging portion 27 is integrally protruded from the lower end of the slider 24, and this fourth engaging portion 27 faces from below the control body 16 so as to be able to engage with the second engaging portion 18. I'm here. Furthermore, a rectangular notch 24a is formed at the upper end of the slider 24 on the side edge facing the dead cam 22, and the drive pin 23 of the operating arm is engaged with this notch 24a. Therefore, when the dead cam 22 rotates counterclockwise in FIG. 1, the slider 24 is pulled upward against the elasticity of the slider spring 26, and as a result, as shown in FIG. 27 pushes up the second engaging portion of the control body, the control body 16 rotates counterclockwise, and in conjunction with the rotation of the control body, the locking par 12 resists the biasing force and rotates clockwise. It rotates and is unlocked mechanically with a key or thumb or turn. That is, in the slider 24 of the illustrated embodiment, the upper direction is the unlocking direction and the lower direction is the locking direction, and in the dead cam 22, the counterclockwise direction is the unlocking direction and the clockwise direction is the locking direction.

On the other hand, an electromagnetic actuator 28 is arranged above the locking par 12. The electromagnetic actuator 28 in the illustrated embodiment is a solenoid type that attracts a plunger, which is a movable part, when energized. To avoid complicating FIG. 1 any further, the configuration of the main parts of the electric lock of the present invention will be explained with reference to FIGS. 2 and 3. Slits 31 are formed at the tips of the two movable parts of the electromagnetic actuator 28. A roller 32 serving as the seventh engaging portion is rotatably supported in the slot 31. Further, at the distal end of the movable portion 29, a U-shaped bent base end of an elongated plate-shaped unlock lever 33 is rotatably supported coaxially with the seventh engaging portion 32. . As is clear from FIG. 2, the unlock lever 33 extends in a direction substantially perpendicular to the moving direction of the slider 24 so as to overlap with the slider 24 (see FIG. 1).
A long bottle-shaped fifth engaging portion 34 is provided at the free end of the fifth engaging portion 34 toward the slider 24 .

Furthermore, a plunger spring 35 as a compression coil spring is wound around the two movable parts. Due to the elasticity of the plunger spring 35, the movable part 29 is pulled out from the electromagnetic actuator 28 and urged in the locking direction to approach the slider 24. Because of the elastic contact with the edge, the unlock lever 33 is biased to maintain an angular position substantially perpendicular to the direction of movement of the slider 24 when no external force is applied (see FIG. 1).

The slider 24 has a slot 31 at the tip of the movable part 29.
(Fig. 3), it moves vertically while slidingly contacting the tip of the movable part 29, but when it is in the unlocked position as shown in Fig. 2, the seventh engaging part 32 A stepped sixth engaging portion 36 is formed on the side edge of the matching slider (see FIG. 1). Therefore, the mechanical unlocking position of the slider 24 with the key or thumb turn is not the same as that of the seventh engaging portion 32 and the mechanically unlocked position of the slider 24, despite the biasing force in the locking direction (downward) by the slider spring 26 (see FIG. 1). It is maintained stably by engagement with the 6-engaging portion 36.

On the other hand, a rectangular hole is opened in the approximate center of the slider 24, and when the slider 24 is lowered to the locked position as shown in FIG. It fits loosely into the rectangular hole. The lower opening edge of this rectangular hole serves as an eighth engaging portion 37, and when the slider 24 moves upward in the unlocking direction, it engages with the fifth engaging portion 34 and pushes it up (the second (see figure), fifth engaging portion 34
is spaced M from the third engaging portion of the control body.

Further, as shown in FIG. 2, a ninth engaging portion 38 is provided protruding from the inner surface of the lock box side plate that aligns with the left end portion of the eighth engaging portion 37 when the slider 24 is in the unlocked position. This ninth engaging portion 38 is activated when the slider 24 rises to the unlocked position as shown in FIG.
), the fifth engaging portion 3 at the tip of the unlock lever 33
4 from below, that is, from the control body 16 side,
Its location has been set.

Furthermore, the dead cam 22 is located above the slider 24.
Three lock levers are provided on the side edge portion of the opposite side. The lock lever 39 in the illustrated embodiment is a lever whose overall shape is approximately in the shape of a rectangle.The lock lever 39 is rotatably supported at its substantially central portion by the side edge of the slider 24, and the lock lever 39 is a torsion spring. - It is biased counterclockwise by the elasticity of the spring 41. The upper end of the lock lever is connected to the drive pin 23 at the tip of the operating arm 22a of the dead cam.
The lower end portion is engaged with the fifth engaging portion 34 pushed up by the eighth engaging portion 37 of the slider.
is coming. As shown in FIG. 1, the vertical dimension of the rectangular notch 24a of the slider 24 that engages with the drive bin 23 is set to be considerably larger than the diameter of the drive bin 23 so that the drive bin 23 can freely move. In addition to being
The upper end of the lock lever 39 is located in the notch 24a of the drive bin 2.
Slider 24 has a shape that interferes with slider 3.
When the operating arm 22a of the dead cam is rotated in the locking direction, that is, in the clockwise direction in FIG. It is rotated clockwise, and the other end pushes the fifth engaging portion 34 in the unlocking direction (see FIG. 6).

In the electric lock according to the invention as set forth in claim 1 configured as described above, when the slider 24 is in the locking position, that is, when it is lowered, the electromagnetic actuator 28 is energized as shown in FIG. Then, the fifth engaging portion 34 pushes the third engaging portion 19 of the control body 16 forward, causing the control body 16 to rotate counterclockwise. Then, rocking par 12
takes the unlocking angular position against the biasing force (see Figure 1). On the other hand, when the electromagnetic actuator 28 is de-energized, as shown in FIG. The engagement between the portion 34 and the third engaging portion 19 is released, and the locking par 12 and the control body 16 become free, and the elasticity of the locking spring 15 causes the locking par 1 to be released.
2 assumes the locking angle position, and the electric lock is locked.

In the locked state shown in FIG. 4, when the dead cam 22 is turned counterclockwise with a key or thumb turn, the operating arm 22a
The drive pin 23 at the tip of the slider 24 pulls the slider 24 upward. Then, the fourth engaging part 27 of the slider engages the second engaging part 27 of the control body.
The engaging portion 18 is pushed upward, and as a result, the control body 16 rotates in the unlocking direction, and the electric lock enters the mechanically unlocked state shown in FIG. 2. In this case, as described above, the unlocked position of the slider is maintained stably by the engagement between the sixth engaging part 36 of the slider and the seventh engaging part of the movable part of the electromagnetic actuator. At the same time, the fifth engaging part 34 at the tip of the unlock lever is pushed up by the eighth engaging part 37 of the slider and separated from the control body 16.

When the electromagnetic actuator 28 is energized in the mechanically unlocked state shown in the second figure, the two movable parts move to the left and the seventh
The slider 24 is unlatched by the engaging portion 32, and at the same time, the fifth engaging portion 34 at the tip of the unlock lever engages with the ninth engaging portion 3.
8 (see Figure 5). Then, as shown in FIG. 5, the slider 24 descends due to its own biasing force, and the fourth engaging portion 27 separates from the second engaging portion 18.
The control body 16 becomes free and the electric lock is locked.

Note that at this time, since the fifth engaging part 34 is locked by the ninth engaging part 38 at a position where it does not interfere with the control body 16,
The locking par 12 and the control body 16 are rotated, that is, locked, instantaneously after the electromagnetic actuator 28 is energized. At the same time, the dead cam 22 engaged with the slider 24 also rotates to assume the locking angular position. After that, when the electromagnetic actuator 28 is de-energized, the movable part 29 moves to the right due to the elasticity of the plunger spring 35, and the engagement between the fifth engagement part 34 and the ninth engagement part 38 is released, and as shown in the fourth figure. It becomes locked.

On the other hand, when the key or thumb turn is turned in the locking direction in the unlocked state shown in FIG. 2, the dead cam 22 rotates clockwise as shown in FIG. Therefore, the drive bin 23 starts to move downward, but at this time, the slider 24 is locked by the seventh engaging part 32 and does not move (see FIG. 2), so the drive bin 23 is moved to the upper end of the lock lever 39. to the right to rotate the lock lever 39 clockwise. Then, the lower end portions of the three lock levers engage with the fifth engaging portion at the tip of the unlock lever 33 and push it to the left in FIG. 6. Then, the engagement between the sixth engagement part of the slider and the seventh engagement part of the two movable parts is disengaged, and the slider 24 is lowered by the biasing force, and at the same time, the engagement between the drive bin 23 and the three lock levers is also disengaged. , the electric lock is in the locked state shown in the fourth figure.

On the other hand, in the electric lock according to the invention according to claim 2, as described above, the unlock lever 33 is fixed without being able to rotate with respect to the movable part of the electromagnetic actuator, and the parts 37 and 38 are absent, and its fraction 5
The engaging portion 34 is short (not shown).

Therefore, when an electric lock that has been mechanically unlocked is locked by an electromagnetic actuator, the two movable parts move and the engagement between the seventh engaging part and the sixth engaging part of the slider is released, and the slider 24 is released. Even when the control body 16 is lowered, the third engagement portion 19 of the control body 16 is engaged with the fifth engagement portion 34 of the unlock lever (see FIG. 1), so that the lock state does not occur as it is. However, as soon as the electromagnetic actuator 28 is de-energized, it becomes locked. That is, in the electric lock according to the second aspect of the invention, in order to lock the mechanically unlocked electric lock using the electromagnetic actuator, a pulsed operating current may be supplied to the electromagnetic actuator.

〔Effect of the invention〕

As is clear from the above description, the present invention provides a control body that rotates in conjunction with a locking bar biased in the locking direction, respectively forming second and third engaging portions, and A slider formed with a fourth engaging part corresponding to the engaging part,
The fourth engaging part engages with the second engaging part and guides it movably in the unlocking direction in which the control body is rotated, and in the locking direction in which it moves away from the second engaging part, and is biased in the locking direction. On the other hand, a fifth engaging part corresponding to the third engaging part is formed at the tip of the unlock lever connected to the electromagnetic actuator, and this is controlled by the electromagnetic actuator. When the electromagnetic actuator is not energized by driving in the unlocking direction and engaging the third engaging part to rotate the control body in the unlocking direction, and biasing the fifth engaging part in the locking direction. further, a seventh engaging part is formed on the movable part of the electromagnetic actuator, and the slider is unlocked by engagement of this seventh engaging part with a sixth engaging part formed on the slider. In addition, the slider is provided with a lock lever that drives the fifth engaging portion so that it can be controlled by a key or thumb turn, so the position of the slider can be controlled by the key or thumb turn. The electric lock can be locked and unlocked mechanically, and the electric lock can be locked and unlocked electrically by controlling the position of the fifth engaging part by an electromagnetic actuator, and furthermore, the electric lock can be mechanically unlocked by a key or a thumb turn. By releasing the lock of the slider of the electric lock using the electromagnetic actuator and moving it in the locking direction by the urging force, an electric lock that has been mechanically unlocked with a key or thumb turn can be remotely locked using the electromagnetic actuator. play.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of an electric lock according to an embodiment of the invention as set forth in claim 1, and Fig. 2 is a side view showing only the essential parts of the electric lock showing mechanical unlocking with a key or thumb turn. figure,
Figure 3 is a side view of the movable part of the electromagnetic actuator and the unlock lever connected to its tip, Figure 4 is a side view similar to Figure 2 showing the locked state of the electric lock, and Figure 5 is a mechanically unlocked side view. A side view similar to Fig. 2 showing a locked electric lock in the middle of being locked with an electromagnetic actuator, and Fig. 6 showing a mechanically unlocked electric lock in the middle of being mechanically locked with a key or thumb turn. FIG. 2 is a side view similar to FIG. 2 showing the state; 1...Lock box, 2...Latch bolt, 3...Front plate, 4...Strike plate, 5...Latch head,
6... Locking step portion, 7... Latch spring, 8... Bolt operation member, 12... Locking bar, 14... Locking end, 15... Locking spring, 16... control body,
17...First engaging part, 18...Second engaging part, one
...Third engaging portion, 22... Dead cam, 22a...
Operating arm, 23... Drive pin, 24... Slider, 2
6...Slider spring, 27...4th engaging portion, 28.
...Electromagnetic actuators, 2...Movable parts, 32...
- Seventh engaging portion, 33... unlock lever, 34...
5th engaging part, 35... Plunger spring, 36... 6th engaging part, 37... 8th engaging part, 38... 9th engaging part, 39... Lock lever 142 ...Lock lever
Spring.

Claims (1)

[Scope of Claims] 1. A latch bolt that is guided so as to be movable in the front-rear direction perpendicular to the front plate within the lock box, and is biased forward in the direction in which the latch head attached to the outer end protrudes from the front plate. The external operating member such as a knob or handle attached to the door and the latch bolt are interconnected, and the latch head is pulled into the lockbox against the biasing force of the external operating member. A latch bolt operation mechanism to be driven, which extends substantially parallel to the latch bolt, is swingably supported near the latch bolt, and whose front end engages with the latch head to move it inward of the lock box. a locking bar that is biased in a direction to prevent the locking bar; the center portion is rotatably supported near the locking bar; an unlocking angle position in which the locking bar engages with a portion of the locking bar, rotates in conjunction with the locking bar, and retracts the front end of the locking bar out of the locus of movement of the latch head;
A control body configured to be able to take a locking angle position that causes the front end of the locking bar to interfere with the locus of movement of the latch head, and a control body that is rotatably supported on the side plate of the lock box and is inserted into the cylinder lock via a clutch. A dead cam which is connected to the cylinder and the thumb turn on the indoor side and has an integrally formed operating arm, and a fourth engaging part which faces the second engaging part of the control body so as to be engageable, are integrally formed. The part is engaged with the tip of the operating arm and is guided so that it can follow the movement of the operating arm when the dead cam rotates, and when the dead cam is rotated in the unlocking direction, it engages with the control body and moves it in the unlocking direction. The slider is configured to be rotated in the lock direction and is biased in the locking direction. a fifth engaging portion whose end is swingably supported by the tip of the movable portion of the electromagnetic actuator and which faces the third engaging portion of the control body so as to be engageable with the third engaging portion of the control body;
Furthermore, an unlock lever is biased to maintain an angular position in substantially the same direction as the guiding direction of the movable part, and when energized, the movable part drives the control body in the unlocking direction via the fifth engaging part. , the movable part is biased in the locking direction, and a seventh engaging part is formed at the tip of the movable part to engage with a sixth engaging part formed on the slider to lock the slider in the unlocked position. The electromagnetic actuator is formed to extend in a direction substantially perpendicular to the direction of movement of the slider and engages with the fifth engaging portion at the tip of the unlock lever when the slider moves in the unlocking direction. an eighth engagement part that rotates the lock lever and thereby separates the fifth engagement part from the third engagement part of the control body;
The center portion is swingably supported by a slider, one end is engaged with the tip of the operating arm of the dead cam, and the other end is exposed to a fifth engagement portion at the tip of the unlock lever to lock the operating arm. A lock lever has one end shaped so that the other end drives the fifth engaging part in the unlocking direction when the slider is in the unlocking position and the electromagnetic actuator is energized. and a ninth engaging part fixedly installed in the lock box so as to engage with the fifth engaging part of the unlock lever from the control body side when the movable part is moved in the unlocking direction. An electric lock featuring 2. A latch bolt that is guided so as to be movable in the front-back direction perpendicular to the front plate in the lock box and is biased forward in the direction in which the latch head attached to the outer end protrudes from the front plate, and the latch bolt that is attached to the door. A latch bolt operating mechanism that interconnects an external operating member such as a knob or handle and a latch bolt, and that operates in conjunction with the external operating member to pull the latch head into the lockbox against the biasing force of the latch bolt. The latch bolt extends substantially parallel to the latch bolt, is swingably supported in the vicinity of the latch bolt, and has its front end oriented in a direction that engages with the latch head and prevents the latch head from moving inward. The central portion of the rocking bar is rotatably supported in the vicinity of the locking bar, and first to third engaging portions are formed in the peripheral portions, and the first engaging portion is connected to the locking bar. an unlocking angle position that engages with the latch head, rotates in conjunction with the locking bar, and retracts the front end of the locking bar out of the movement trajectory of the latch head;
A control body configured to be able to take a locking angle position that causes the front end of the locking bar to interfere with the locus of movement of the latch head, and a control body that is rotatably supported on the side plate of the lock box and is inserted into the cylinder lock via a clutch. A dead cam which is connected to the cylinder and the thumb turn on the indoor side and has an integrally formed operating arm, and a fourth engaging part which faces the second engaging part of the control body so as to be engageable, are integrally formed. The part is engaged with the tip of the operating arm and is guided so that it can follow the movement of the operating arm when the dead cam rotates, and when the dead cam is rotated in the unlocking direction, it engages with the control body and moves it in the unlocking direction. The slider is configured to be rotated in the lock direction and is biased in the locking direction. An unlock lever has an end supported by the tip of the movable part of the electromagnetic actuator, and has a fifth engagement part formed at the tip so as to be engageable with the third engagement part of the control body, and when energized, the movable part moves to the fifth engagement part. The control body is driven in the unlocking direction via the engaging portion, and the movable portion is biased in the locking direction, and the distal end of the movable portion is further engaged with a sixth engaging portion formed on the slider. An electromagnetic actuator is provided with a seventh engaging portion for locking the slider in the unlocked position, the center portion of which is swingably supported by the slider, one end of which is engaged with the tip of the actuating arm of the dead cam, and the other end one end thereof faces the fifth engaging part at the tip of the unlock lever, and the other end drives the fifth engaging part in the unlocking direction when the operating arm rotates in the locking direction. An electric lock characterized by having a lock lever having a shape set as follows.