JPH0331821Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention a. Industrial application field The present invention is a door lock used for, for example, the entrance door of a general house or condominium, or the door of a hotel room. This relates to a door lock that can be unlocked by turning on a current.

b. Conventional technology Conventional door locks are generally locked and unlocked using a duplicate key, but recently magnetic cards have been used to turn the current on and off, or to switch from inside the room.
Devices that operate mechanisms to lock and unlock locks by turning them on and off to excite and demagnetize electromagnets are beginning to be used.

c Problems that the invention aims to solve
Devices that excite and demagnetize electromagnets by turning them on and off have complex mechanisms, require strong force to operate, or require the electromagnet to be energized for a long time for each operation. There are many. Furthermore, since it is difficult to wire a power source to a door that is opened and closed, there are other problems such as having to attach the lock body to the door frame, contrary to a regular lock.

The present invention is an attempt to solve the problems of the above-mentioned conventional locks. That is, the object is to provide a door lock that is relatively simple in construction, does not require strong force to operate, and can be attached to the door itself.

B. Structure of the invention a. Means for solving the problems The door lock according to the invention includes a latch 4 and a trigger 5 that protrude from the case 1 by means of springs 2 and 3, respectively, and a latch 4 that locks when the trigger 5 is retracted. In the door lock having a latch stopper 6, an electromagnet 7 which is energized and excited by an appropriate unlocking means is provided in the case 1, and a first slide plate 9 interlocking with the outdoor operation part 8 and a latch 4 are provided. A second slide plate 12 integral with the latching stopper and a third slide plate 14 for releasing the latch stop are provided so as to be slidable back and forth, and the first slide plate 9 has a suction plate 10 that is attracted by the electromagnet 7 back and forth. A hook plate 11 is provided so as to be slidable and can be operated by being hooked by a suction plate 10 when the first slide plate 9 retreats. Hooking portions 24 and 25 are respectively provided to be hooked to the hooking plate 11 that operates when the vehicle is retracted, and the third slide plate 14 is provided with a convex portion 13 that operates the latch stopper 6 in the releasing direction when the vehicle is reversing. .

The above configuration will be explained based on the drawings. The electromagnet 7 is mounted inside the case 1 in front of the first slide plate 9. As shown in FIGS. 1 and 2, the slide plates include first, second, third, and fourth slide plates 9, 12, 14, and 15 overlapping each other when viewed from the outdoor side, and the first slide plate 9 is the rotation of the knob 8 as the outdoor operation part, and the spring 1 is activated via the spindle plate 16 and the hub 17.
It is possible to retreat against 8. The second slide plate 12 is fixed to the rear part of the latch 4.
can be slid together. Third slide plate 14
is the pin 1 protruding from the rear of the second slide plate 12.
9 is pushed forward, and the slide plate 14
A pin 13 is provided as a convex portion for releasing the latch stopper 6, which is rotated by contacting the latch stopper 6. The fourth slide plate 15 is rotated by the rotation of the handlebar 20 as an indoor operation part, and the square shaft 21 and the hub 22
It is possible to retreat against the spring 23 via.
The second and third slide plates 12 and 14 have locking pieces 24 and 25 protruding from common positions on the sides thereof, and the fourth slide plate 15 has locking pieces 24 and 25 protruding from the second and third slide plates 12 and 14, respectively. A locking claw 2 for retracting both 12 and 14
7 is provided.

The suction plate 10 is provided near the front of the first slide plate 9 so as to be able to slide slightly back and forth through a long hole 28, and has a locking convex portion 29. A hook plate 11 is also rotatably provided on the first slide plate 9 adjacent to the suction plate 10, and when the first slide plate 9 retreats while the suction plate 10 is attracted to the electromagnet 7,
The base 30 is rotated by being hooked on the locking convex portion 29 of the suction plate 10, and is hooked on the locking pieces 24, 25 of the second and third slide plates 12, 14, so that both can be retreated.

In the above configuration, the appropriate means for unlocking means, for example, a magnetic card, a fingerprint, voice, a numeric keypad for pressing the correct number, or any other means that can turn on the current. The hook plate 11 is connected to the spring 3
3, it is kept away from the second, third, and fourth slide plates 12, 14, and 15 under normal conditions.
34 is a limit switch, and the third slide plate 14
When the motor moves backward, the pin 13 is pressed to turn off the current. The latch stopper 6 is pushed by a spring 35 in order to lock the neck of the latch 4 in the protruding state. The latch 4 is detached from the neck of the latch 4 by being hooked and rotated. 37 is a guide pin;
Guide holes 38 of the first and fourth slide plates 9 and 15,
39 to maintain sliding in the front-rear direction. The illustrated lock is an inward-opening type lock for opening the door 40 toward the indoor side, and in the case of an outward-opening door, the inclined surfaces of the latch 4, trigger 5, etc. are oriented in the opposite direction. 41 is a receiving plate attached to the door frame.

b. Operation To explain the operating state of the present invention, first, when entering a room and locking the door 40, it is sufficient to simply close the door 40. This causes the head of latch 4 to
After it hits the receiving plate 41 of the door frame and is once retracted, it is projected by the spring 2 and engaged with the locking hole. At this time, the trigger 5 comes into contact with the receiving plate 41 and is retracted, so the latch stopper 6, which is released from the side plate 36 of the trigger 5, is pushed by the spring 35 and holds the neck of the latch 4. This locks the latch 4 and prevents the latch 4 from being retracted, resulting in a locked state, as shown in FIG.

In the above case, even if a third person turns the knob 8 on the outdoor side, the first slide plate 9 simply moves back via the hub 17. That is, in this state, the electromagnet 7 is not energized and the suction plate 10 retreats together with the first slide plate 9, so the hook plate 11 is not caught on the locking protrusion 29 of the suction plate 10 and is not rotated ( (See Figures 1 and 8). Therefore, even if the first slide plate 9 retreats, the hook plate 11 does not hook the hook pieces 24 and 25 of the second slide plate 12 and the third slide plate 14, so the second slide plate 12 and the third slide plate 14 does not retreat and latch 4
does not move back and the latch stopper 6 is not released.

Next, when opening the door 40 to go out from the room, the user only needs to turn the handlebar 20 on the indoor side. As a result, the fourth slide plate 15 moves backward via the square shaft 21 and the hub 22, but the fourth slide plate 15
5 has a locking pawl 27, which causes both the second and third slide plates 12 and 14 to retreat. Therefore, the pin 13 of the third slide plate 14 is attached to the latch stopper 6.
Push the rear side of the latch 4 and release the stopper 6 from the neck of the latch 4 to unlock it. On the other hand, since the second slide plate 12 is integral with the latch 4, the latch 4 retracts when the slide plate 12 retreats. Therefore, by pulling the handlebar 20 on the indoor side, the door 40 will be opened.

In addition, if you want to lock the door from outside, simply lock the door 40.
Just close it. This is similar to the above-mentioned case of locking from inside the room, and the head of the latch 4 engages with the locking hole in the receiving plate 41 of the door frame. At this time, since the trigger 5 is retracted by the receiving plate 41, the trigger 5
The latch stopper 6, whose side plate portion 36 is released, is pushed by the spring 35 and locks the neck of the latch 4, thereby preventing the trigger 5 from being retracted and becomes locked. Furthermore, in the same way as above, even if you turn the knob 8 on the outdoor side,
In this state, the first slide plate 9 simply retreats and the hook plate 11 does not rotate as shown in FIGS. 1 and 8, so the second and third slide plates 12 and 14 do not retreat. Therefore, the latch stopper 6 is not released, and the latch 4 remains in the locked state.

When unlocking the door from outside, if the appropriate unlocking means is, for example, a magnetic card, the electromagnet 7 is excited by turning on the current using the magnetic card. As a result, the first slide plate 9 as shown in FIG.
The upper suction plate 10 is suctioned. When the knob 8 on the outdoor side is turned in this state, the first slide plate 9 retreats via the hub 17, and the hook plate 11 provided there
also tries to retreat. However, the suction plate 10 that has been sucked is provided with a long hole 28 in the first slide plate 9, and does not retreat immediately. It hits the stop protrusion 29. Therefore, the hook plate 11 rotates, and its rear end hooks on the locking piece 24 of the second slide plate 12, and as the first slide plate 9 retreats, the second slide plate 12 also retreats as shown in FIG. .
At the same time, although not shown in FIGS. 8 to 10, since the hook plate 11 is also hooked on the locking piece 25 of the third slide plate 14, the third slide plate 14 also moves backward.

Therefore, the pin 13 on the third slide plate 14 hits the rear part of the latch stopper 6 and rotates it.
Even when the trigger 5 is retracted, the stopper 6 is released from the locked state of the neck of the latch 4. At the same time, as the second slide plate 12 retreats, the latch 4 integrated therewith is removed from the locking hole of the retractable receiving plate 41. Therefore, the door is unlocked as shown in FIG. 2, and can be opened by pushing the door 40.

In the above case, the suction plate 10 attracted to the electromagnet 7 serves its purpose by rotating against the hook plate 11, and retreats following the first slide plate 9 to release the suction state. Further, unlike the above, when an incompatible magnetic card or the like is used, the electromagnet 7 is not energized, so that the attraction plate 10 cannot be attracted at the same time as shown in FIGS. 1 and 8. Therefore, even if the outdoor side operation part 8 is turned, the hook plate 11 simply retreats according to the first slide plate 9, and each hook piece 2
4 and 25 are not hooked, the second and third slide plates 12 and 14 do not move and remain locked.

Further, although the details are omitted, in addition to the latch 4, a bolt 42 is provided as shown in FIG. It is also conceivable to enable operation at 32.

C. Effect of the invention As is clear from the above, the door lock of the invention is provided with an electromagnet that is energized and excited only by a proper unlocking means, and a first slide plate that is retracted by the rotation of the outdoor operating section. In addition, a suction plate that is attracted by the electromagnet is slidably provided, and a hook plate that is rotatable by hitting the suction plate when the first slide plate retreats is provided, and a second slide plate integrated with the latch and a latch stopper release plate are provided. It is provided so that it can be locked to a third slide plate having a convex portion.

Therefore, according to the present invention, the mechanism is relatively simple, and since strong force is not required to operate each part and batteries are sufficient, there is no need for wiring using an AC power source as in the past. It has the advantage of being able to be attached to the door like a regular lock.

[Brief explanation of the drawing]

Figure 1 is a front view of the locked state with some side plates removed, Figure 2 is a front view of the unlocked state, Figure 3 is a side view of the door when it is installed, and Figure 4 is a front view of the first sliding plate. Front view, Figure 5 is a front view of the second slide plate, Figure 6 is a front view of the third slide plate, Figure 7 is a front view of the fourth slide plate, and Figure 8 is a front view of a part before energization. Figure 9 is a front view of a portion of the outdoor operation section when the outdoor operation section is slightly turned after being energized, and FIG. 10 is a front view of a portion after the outdoor operation section is turned sufficiently after being energized. Drawing code, 1...Case, 2, 3...Spring, 4
... Latch, 5 ... Trigger, 6 ... Latch stopper, 7 ... Electromagnet, 8 ... Outdoor operation section, 9 ...
...First slide plate, 10...Suction plate, 11...Hook plate, 12...Second slide plate, 13...Protrusion,
14...Third slide board.

Claims (1)

[Scope of Claim for Utility Model Registration] A door lock having a latch 4 and a trigger 5 that protrude from the case 1 by means of springs 2 and 3, and a latch stopper 6 that locks the latch 4 when the trigger 5 is retracted. , an electromagnet 7 that is energized and excited by an appropriate unlocking means is provided, a first slide plate 9 interlocked with the outdoor operation section 8, a second slide plate 12 integrated with the latch 4, and a latch stopper release. The first slide plate 9 is provided with a suction plate 10 that is attracted by the electromagnet 7 so as to be slidable back and forth. A hook plate 11 is provided that can be hooked to the suction plate 10 when the first slide plate 9 is moved backward, and a hook plate 11 that can be hooked to the hook plate 11 that is activated when the first slide plate 9 is moved backward is provided on the second slide plate 12 and the third slide plate 14. 24 and 25 respectively, and the third slide plate 14 is provided with a protrusion 13 that operates the latch stopper 6 in the releasing direction when the third slide plate 14 is retracted.