JPH063081B2 - Lock device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a latch bolt that is engaged with a door frame side in conjunction with an operation of releasing the operation of a trigger bolt that locks the latch bolt before locking in a temporarily tightened state. The present invention relates to a lock device that allows the operation of releasing the engagement from the door frame side to be performed by remote control and allows the door to be opened without rotating the knob.

[Prior art]

Conventionally, when a door is closed in a temporarily tightened state where locking with a dead bolt is not performed, a latch bolt in a case of a lock attached to the door is projected and engaged in an engagement hole of a strike on the door frame side. At the same time, the trigger bolt comes into contact with the strike and is pulled into the case of the lock on the door side to lock the latch bolt, and the outer knob is also locked so as not to rotate.

By the way, when there is a resident in the room, when the alien calls the resident with an interphone, etc., the resident operates the switch and operates the trigger bolt by remote control to open the door. A lock device has been proposed in which the latch bolt is unlocked by projecting it to the frame side, and the door can be opened by an outsider turning the knob.However, in the above lock device, the lock bolt of the trigger bolt is attached to the door frame side. Even if the occupant releases the contact of the trigger bolt by remote control and unlocks the outer knob by providing a device for releasing the contact, the visitor cannot open the door unless the outer knob is turned. However, there is a drawback that it is inconvenient when both hands of an outpatient are blocked by luggage or the like.

Therefore, the present inventor interlocks with the operation of releasing the engagement of the trigger bolt that locks the latch bolt by the remote operation with the first solenoid, from the outside of the lock without rotating the knob. A locking device has been proposed in which the latch bolt engaged with the strike on the door frame side is pushed into the case of the lock on the door side by the second solenoid and the door can be opened by simply pushing the door. However, since two solenoids are used, a large amount of electric power is used, wiring of the unlocking device on the door frame side becomes complicated, and if the holding time of the solenoid is set long, the solenoid may be burnt. was there.

[Outline of Invention]

The present invention has been made to solve the above drawbacks, and holds a holding plate at a position where a trigger bolt is pressed toward the door side, and pushes a latch bolt toward the door side to release the engagement between the door and the door frame. In order to hold the pressing tool, each one is equipped with an electromagnet that consumes less power and can be operated by energizing for a long time.When rotating the pressing tool for pressing the latch bolt, the solenoid is momentarily operated to keep the energized state. It is designed so that no operation is performed. The present invention will be described below.

Example of Invention

FIGS. 1 (a), (b) and (c) show an embodiment of the present invention, and FIGS. 1 (a) and (b) respectively show a partially cutaway front view and side view, FIG. 1 (c) is a perspective view of a main part. In these figures, I is a lock part attached to the door A side, and II is a fixed part on the door frame B side.

In the locking portion I, 1 is a case, which accommodates a latch bolt 3 and a trigger bolt 4 which come in and out of the door A by turning an outer knob 2 and an inner knob (not shown). 5 is a keyhole, 6
Is the front. The inner knob is attached to the opposite side of the door A. The latch bolt 3 is constantly projected by a first spring (not shown) in the case 1 and is retracted by turning the knob 2. The trigger bolt 4 is constantly projected by a second spring (not shown) in the case 1,
When the door A is closed, it is retracted into the case 1 and the latch bolt 3 is locked so that it functions like a dead bolt.

In the fixed portion II, 7 is a strike, 8 is a through hole through which the latch bolt 3 is inserted / extracted formed in the strike 7, 9 is a through hole through which the trigger bolt 4 is inserted / extracted, 10 is the trigger bolt 4 in / out from the case 1. Presser plate to control 1
Reference numeral 1 denotes a shaft integrally fixed to a corner portion 10a of the pressing plate 10, 12 denotes a bearing for rotatably supporting the shaft 11, and 13
Is a side plate, and the bearing 12 is fixed by a mounting screw 14 (shown in FIG. 1 (c)) or the like. 15 is the latch bolt 3
A pressing tool 15a for pressing the lower end of the pressing tool 15,
Reference numeral 15b is an upper end portion, 16 is a shaft fixed integrally with the pressing tool 15, and 17 is a bearing that rotatably supports the shaft 16, and is fixed to the side plate 13 by a mounting screw 14 or the like.
18 is an engaging shaft integrally fixed to the lower end portion 15a of the pressing tool 15, 19 is a long operating plate, 20 is the operating plate 1
The engaging shaft 18 is slidably engaged with the engaging groove formed in the lower portion 19a of the shaft 9. Reference numeral 21 denotes a plunger which is engaged with the upper end portion 19b of the operating plate 19, 22 denotes a solenoid for moving the plunger 21 and the operating plate 19 up and down, 2
Reference numeral 3 is a first electromagnet for holding the pressing plate 10 at the position shown by the solid line in FIG. 1 (b), and is smaller than the solenoid 22. Reference numeral 24 is a first adsorber made of a magnetic material that is attracted to the first electromagnet 23, and is fixed to the side surface of the horizontal portion 10b of the holding plate 10. 25 is a pressing tool 1 when the solenoid 22 is energized and the operating plate 19 is raised.
A second electromagnet for holding 5 at the position indicated by the alternate long and two short dashes line in FIG. 1 (b) and having the same shape as the first electromagnet 23 is used. A second adsorber 26 is attached to the second electromagnet 25 and fixed to the upper surface of the horizontal portion 19c of the lower portion 19a of the operating plate 19. Reference numeral 27 is a latch bolt that is pulled into the interior of the door frame B side by pressing the door A when the door A is closed, 28 is a compression spring, 29 is an operating piece of the latch bolt 27, and 29 is an operation when the latch bolt 27 is retracted. Door A that is turned on and off by moving the piece 29
When closed, turns on and when open, turns off. Also, 3
1 is a bottom plate.

Next, the operation will be described.

1 (a) and 1 (b) show a state in which a resident is present in the room and the door A is closed. At this time, the first electromagnet 23 is energized, attracts the first adsorber 24, and presses the holding plate 1.
Since 0 is held at the position indicated by the solid line in FIG. 1 (b), the trigger bolt 4 is brought into contact with the holding plate 10 and retracted into the case 1. Therefore, even if the latch bolt 3 itself is pressed from the outside, it will not be pushed into the case 1.

Next, when the resident calls the resident with the interphone, when the resident turns on the switch in the room, the electric current of the first electromagnet 23 is turned off.
Then, the holding plate 10 can be rotated and the trigger bolt 4 returns to the through hole 9 by the restoring force (which is always biased by a spring (not shown) so as to project) to unlock the latch bolt 3. Then, the latch bolt 3 can be pressed from the outside and pushed into the case 1. At this time, the pressing plate 10 is moved to the shaft 1 as shown in Fig. 1 (b).
It rotates clockwise about 1 to the position indicated by the chain double-dashed line.

Next, when the solenoid 22 is energized, the plunger 2
Since the operating plate 19 is pulled up via the
While the sliding member 8 slides in the engaging groove 20 in the lower portion 19a of the operating plate 19, the pressing tool 15 is rotated clockwise about the shaft 16 to press the latch bolt 3 and hold it at the position indicated by the chain double-dashed line. To disengage the strike 7. At this time, the trigger bolt 4 is also pushed into the case 1 together with the latch bolt 3 so that the door A can be opened. Therefore, the visitor can open the door A by simply pushing the door A without rotating the outer knob 2. At the same time when the latch bolt 3 is pulled into the case 1, the holding plate 10 rotates counterclockwise and returns to the position indicated by the solid line, and the first adsorber 24 is attracted to the energized first electromagnet 23 and initially. Held in the state of.

Further, as the actuating plate 19 is pulled up, the second adsorbent 26 also rises and is attracted to the second electromagnet 25 in the energized state, so that the door A is opened even if the current of the solenoid 22 is turned off. To maintain a stable state.

Then, when the door A is opened, the latch bolt 27 pushed by the door A is pushed out by the repulsive force of the compression spring 28 and the operating piece 29 moves to turn off the door switch 30, so that the second electromagnet 25 also. It is turned off, the actuating plate 19 descends by its own weight due to the detachment of the second adsorber 26, and the pressing tool 15 rotates counterclockwise and returns to the position of the initial solid line.

Further, when the door A is closed, the door A presses the latch bolt 27 to turn on the door switch 30, and at the same time, the first electromagnet 23 is energized to adsorb the first adsorbent 24 and the pressing plate 1
Since 0 is maintained in the state of the solid line, the trigger bolt 4 is pressed by the holding plate 10 and can be pulled into the case 1.

2 (a) and 2 (b) are a diagram showing a circuit of the lock device of FIG. 1 and a waveform diagram of a main part for explaining the operation. A is a door, B is a door frame, and C is a control room. The door opening / closing operation circuit is provided as a closed loop across the door frame B and the control room C. Further, the control room C is provided with a control circuit. E
C ₂₂ is an exciting coil for operating the solenoid 22, E
C ₂₃ is an exciting coil of the first electromagnet 23, EC ₂₅ is an exciting coil of the second electromagnet 25, and the first and second electromagnets 23 and 25 operate at a voltage lower than that of the solenoid 22. ing. S ₃₀ is a door switch, E is a power supply for the door opening / closing operation circuit, D is a diode, P ₁ and P ₂ are + and − power supply terminals of the control circuit, R is a resistor, and S ₁ is in the control room C. An operation switch provided, INV is an inverter, MM ₁ MM ₂ is a monostable multivibrator, AM
P _1, AMP ₂ are amplifiers, Ry ₁ is operated by the output of the monostable multivibrator MM _1, the relay coil, Ry ₂ to turn off the contact point y ₁ is operated by the output of the monostable multivibrator MM _2, contact A relay coil that turns on the y _2-1 and switches the contacts y _2-2 and y _2-3 , and Ry ₃ is a relay coil that turns off the contact y ₃ of the ground circuit G by turning off the contact y _1. In addition, the relay coil Ry ₃ causes the voltage of the power source E to drop by the resistance of the coil and causes a minute current to flow through the exciting coils EC ₂₃ and EC ₂₅ . In FIG. 2 (b), the symbol I _C indicates the magnitude of the current value of the door opening / closing circuit.

Next, the operation will be described.

Initially, the door opening / closing circuit when the door A is closed is shown in FIG.
As shown in (a), at the time of t _{0 in} FIG.
From the power supply E → contact y ₁ → relay coil Ry ₃ → contact y
_2-2 → Excitation coil EC ₂₃ (or excitation coil EC ₂₅ ) →
Since a small amount of current is flowing in the direction of the door switch S ₃₀ → contact point y _2-3 → power source E, the operation of the exciting coil EC ₂₃ causes the first attractor 24 shown in FIG. 1 to move to the first electromagnet 23. The trigger bolt 4 is adsorbed, and the trigger bolt 4 is pressed by the pressing of the holding plate 10 into the case 1.
It is retracted inside. At this time, since the diode D is in the opposite direction to the power source E, no current flows through the exciting coil EC ₂₂ .

Next, at the time t ₁ when the switch S _{1 of the} control circuit is turned on, the signal “1” is generated by the inverter INV, the output Q is output from the monostable multivibrator MM _1, and the amplifier AM is output.
The relay coil Ry ₁ is amplified by P ₁
Is operated for a while to turn off its indirect point y ₁ , so the coil EC
₂₃ , EC ₂₅ no current flows. For this reason, the first electromagnet 23 is no longer attracted to the first attractor 24, and the trigger bolt 4 projects, so that the holding plate 10 rotates clockwise.

When the contact y ₁ turns off, the relay coil Ry ₃ loses its attractive force, and the contact y ₃ turns off, and the inverter INV causes “0”.
Is generated, the output of the monostable multivibrator MM ₁ is amplified by the amplifier AMP ₂ at time t ₂ , the relay coil Ry ₂ is activated for, for example, 200 ms, and its indirect point y _2-1 is turned on. The circuit of the relay coil Ry ₂ is short-circuited (at this time, the contact y ₁ is turned on by the return of the relay coil Ry ₁ , but the relay coil Ry ₃ is in a short-circuited state, so that almost no current flows and the contact y ₃ is turned off. The state is maintained), and at the same time, the contacts y _2-2 and y _2-3 are switched to set the polarity of the diode D in the forward direction with respect to the power source E, so that the current from the power source E changes from the power source E to the contact y. _2-1 → contact y
_2-2 → Door switch S ₃₀ → Excitation coil EC ₂₂ → Diode D → Contact y _2-3 → A large current flows in the direction of power supply E.
Then, when the exciting coil EC ₂₂ is energized, the solenoid 22 is actuated, the actuating plate 19 is pulled up, the pressing tool 15 is rotated, and the latch bolt 3 is drawn into the door A. At the same time, the second adsorber 26 is adsorbed by the second electromagnet 25 and maintains the adsorbed state.

Further, at the time of t _2, a current is flowing in the exciting coil EC ₂₅ , so that the second attractor 26 is attracted to the second electromagnet 25 and the attracted state is maintained.

Then, at time t _3, the contact y _2-1 is turned off by the relay coil Ry ₂ is turned off, the initial current flows in the circuit of the relay coil Ry _3, to turn on the contact y _3. Also,
At the same time, the contacts y _2-2 and y _2-3 are restored, so the exciting coil R
No current flows in y ₂₂ .

Next, at time t ₄ when the door A is opened, the door switch S ₃₀
Is turned off, no current flows through the entire door opening / closing operation circuit. For this reason, since the exciting coils EC ₂₃ and EC ₂₅ are not energized, the second electromagnet 25 loses the attraction force to the second attractor 26 and the operating plate 19 descends to depress the pressing tool 1.
Return 5 to its original position. At this time, the relay coil Ry
_Since the contact force of ₃ also disappears and the contact y ₃ is turned off, even if the switch S ₁ is turned on, the control circuit does not operate.

Next, when the door A is closed, at time t ₅ , the door switch S
_{Since 30} is turned on, the exciting coils EC ₂₃ and EC ₂₅ are energized, and the first electromagnet 23 of the holding plate 10 is moved to the first adsorber 23.
Adsorb. At this time, the relay coil Ry ₃ also operates to turn on the contact y ₃ .

When the door A is closed, the door switch S ₃₀ is turned on to energize the exciting coil Ry ₃ and then the position of the door switch 30 is set so that the trigger bolt 4 comes into contact with the holding plate 10.

〔The invention's effect〕

As described above, the present invention provides a pressing plate that presses the trigger bolt toward the door at a position facing the trigger bolt on the door frame side, and strikes a through hole for contacting the trigger bolt with the pressing plate. A first electromagnet is formed to hold the holding plate at a position where the trigger bolt is pressed toward the door, and the pressing bolt is released to cause the trigger bolt to project toward the door frame, and then the latch bolt is attached to the door. Since the solenoid that pushes the door to the door frame to release the engagement between the door and the door frame is provided, and the second electromagnet that keeps the latch bolt pushed to the door side is provided, wiring of the door opening / closing operation circuit is simplified. As a result, the lock device can be easily assembled and attached. Also,
The solenoid for opening the door can be operated instantaneously, and since the first and second electromagnets are used to hold the pressing plate and pressing plate for a long time, it consumes less power and burns the solenoid. It has advantages such as never happening.

[Brief description of drawings]

FIGS. 1 (a), (b) and (c) show an embodiment of the present invention, and FIGS. 1 (a) and (b) respectively show a partially cutaway front view and side view, 1 (c) is a perspective view of a main part, and FIGS. 2 (a) and 2 (b) are a diagram showing a circuit of the lock device of FIG. 1 and a waveform diagram of the main part showing the operation thereof. In the figure, I is a locking part, II is a fixed part, 1 is a case, 2 is an outer knob, 3 is a latch bolt, 4 is a trigger bolt, 5 is a key hole, 6 is a front, 7 is a strike, 8 and 9 are through holes, 1
0 is a holding plate, 11 and 16 are shafts, 12 and 17 are bearings, 13
Is a side plate, 14 is a mounting screw, 15 is a pressing tool, 18 is an engaging shaft, 19 is an operating plate, 20 is an engaging groove, 21 is a plunger,
22 is a solenoid, 23 is a first electromagnet, 24 is a first adsorbent, 25 is a second electromagnet, 26 is a second adsorbent, 2
7 is a latch bolt, 28 is a compression spring, 29 is an operating piece, 3
Reference numeral 0 is a door switch, 31 is a bottom plate, A is a door, B is a door frame, and C is a control room.

Claims (1)

[Claims] 1. A latch bolt, which is always projected from a case by a first spring, and retracted by pressing from the outside or rotation of a knob, and a second bolt which is constantly projected from the case by an outside spring from the outside. By engaging the latch bolt when pushed in by pressing, a lock part having a trigger bolt that locks the latch bolt in a state of protruding from the case is attached to the door side, and when the door is closed. In a locking device, which comprises a fixing portion having a strike hole formed with the latch bolt fitted to the door frame side, a strike hole on the door frame side is formed with a through hole through which the trigger bolt comes in and out. At the same time, a rotatable pressing plate that comes into contact with the trigger bolt by rotation at a position facing the trigger bolt is provided. A rotatable pressing tool is provided which comes into contact with the latch bolt by rotating at a position facing the latch bolt, and in the energized state, the pressing plate is rotated to press the trigger bolt to the door side. A first electromagnet for holding the plate is provided, and after the energization of the first electromagnet is stopped and the holding by the holding plate is released so that the trigger bolt projects into the through hole of the strike, energization is performed. A solenoid is provided that moves upwards by moving the plunger that can be moved up and down, and the upward movement of the plunger pushes the latch bolt into the case through the operating plate to engage the door with the door frame. A second electromagnetic device which is provided with a pressing tool for releasing and further holds a state in which the latch bolt is pressed into the door side by the pressing tool in an energized state. Lock device, wherein a provided.