JPH0424513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lock device in which the operation of a trigger bolt that locks a latch bolt of a lock in a temporarily tightened state can be released by remote control.

Conventionally, when the latch bolt of a lock installed on the door side is locked into the engagement hole of a strike installed on the door frame side, in order to unlock the latch bolt at a distance from the door, use the case of the strike. One side of the door, that is, the side that forms the engagement hole on the side where the door opens, is rotated horizontally by electrical operation to open it, and the latch bolt locked in the engagement hole is opened. Even if the door is not unlocked and the latch bolt protrudes from the front of the lock and remains locked, the door can be opened.

However, in the above case, there were drawbacks such as the size of the strike on the door frame side becoming stronger and the need for a device such as a solenoid with a relatively large electric capacity.

This invention was made in order to solve the above-mentioned drawbacks, and by releasing the trigger bolt that locks the latch bolt, the outer knob can be rotated and the latch bolt can be retracted to open the door. The present invention provides a locking device that enables This invention will be explained below.

Figures 1, 2a and 2b show an embodiment of the present invention. Figure 1 is a partially cutaway side view showing the locked state, and Figures 2a and 2b show the main parts of Figure 1. FIG. 2 is an enlarged partially cutaway side view and a sectional view taken along the - line. In these figures, denotes a locking part attached to the door side, and denotes a fixed part attached to the door frame side, wall, etc. In the locking part, 1 is the case, 2 is the knob, 3 is the thumb turn, 4 is the front,
Reference numeral 5 denotes a latch bolt, which is always projected by a spring (not shown) within the case 1 and retracted by rotation of the knob 2. Reference numeral 6 denotes a dead bolt that enters and exits from the front 4 by turning the thumb turn 3 or a key (not shown), and 7 a trigger bolt, which is always protruded by a spring (not shown) in the case 1 and is attached to the case 1.
It can be moved in and out of the case 1, and when the door is closed, it is pulled into the case 1 and locks the latch bolt 5. In the fixed part, 8 is a case, 9 is a strike, 10 is a through hole in which the latch bolt 5 is fitted in and out, 11 is a through hole in which the dead bolt 6 is fitted in and out, and 12 corresponds to the trigger bolt 7. A lid 13 that controls the movement of the trigger bolt 7 into and out of the case 1 is removably fitted into the through hole formed in this way. 14 is a support shaft of the lid 13; 15 is a guide tube into which the support shaft 14 is slidably fitted and guided; 16 is a lifting metal fitting that moves vertically within the case 8; and 17 is a support shaft for the lid 13. A protrusion provided on the side of the lid 13 connects the through hole 12.
Lifting fitting 16 to act in the direction of retraction from the
A long guide hole 18 formed obliquely on the side surface of the
is slidably engaged with. 19 is the lid 13
A compression spring that presses the trigger bolt 7 toward the door side has a larger output than that of the spring provided inside the case 1 to move the trigger bolt 7 in and out. 20
operates the lifting fitting 16 in the vertical direction to lift the lid 1.
A solenoid 21 is a plunger which is integrally attached to the lifting fitting 16 by a screw 22 to form a lid movement control means for horizontally moving the lid 13 and separating it from the trigger bolt 7.

Next, the operation will be explained.

First, FIG. 1 shows a state in which the door is closed. The trigger bolt 7 contacts the lid 13 on the door frame side and is retracted into the case 1, and the latch bolt 5 is locked in the position shown by the two-dot chain line in Fig. 2b, and the knob 2 on the outside of the door is turned. The door cannot be opened from the outside because it does not move.

Although FIG. 1 shows a state in which the dead bolt 6 is protruding and locked, in the following description, a case will be described in which the dead bolt 6 is not locked.

First, if a visitor wants to open a closed door by turning the knob 2 from outside the door, the visitor calls the resident through an interphone, etc., and the resident turns the switch inside the room. (not shown) to operate the solenoid 20 on the door frame side. Then, when the solenoid 20 operates, the plunger 21 is attracted and raised, the elevating metal fitting 16 is pulled up, and the protrusion 17 is moved horizontally along the guide hole 18. Therefore, the support shaft 14 of the lid 13 is connected to the guide tube 1.
5, the compression spring 19 is biased to move in the direction of arrow A, and the wire is disengaged from the through hole 12.
When the through hole 12 is opened, the trigger bolt 7, which has been pushed into the case 1, protrudes and returns from the position indicated by the two-dot chain line in FIG. 2b to the position indicated by the solid line, so that the latch bolt 5 is unlocked. The knob 2 can be rotated from the outside and the door can be opened. After the door is opened, when the occupant turns off the switch and the suction operation of the solenoid 20 is released, the lifting metal fitting 16 becomes free and the lid 13 moves as shown by the arrow A due to the biasing force of the compression spring 19. It moves in the opposite direction, fits into the through hole 12, and returns to its original position.

FIG. 3 is a partially cutaway side view showing another embodiment of the present invention, in which the same reference numerals as in FIGS. A possible lid 32 is a guide case for the lid 31 and is made of a non-magnetic material. 33 is a lifting metal fitting, which is attached integrally with the plunger 21,
Lid movement control means for horizontally moving the lid 31 and separating it from the trigger bolt 7 is formed. 34 is a tension spring that urges the elevating metal fitting 33 downward; 35 is a magnet embedded in the lid 31;
Reference numeral 36 denotes a magnet embedded in the elevating metal fitting 33, and the magnets 35 and 36 are set so that the same polarity faces each other. Reference numeral 37 denotes a stopper for positioning the elevating metal fitting 33, and is set so that the magnet 36 and the magnet 35 are in opposing positions.

Next, the operation will be explained.

As shown in FIG. 3, when the door is closed, the magnet 35 is repelled by the magnet 36, so the trigger bolt 7 is in contact with the lid 31.

Next, operate the solenoid 20 to lift the lifting fitting 3.
3, the magnet 36 is pulled up as shown in Figure 4.
is far away from the magnet 35, and the repulsive force disappears and the lid 3
1 becomes free, the trigger bolt 7 protrudes and releases the lock of the latch bolt 5.

Furthermore, when the solenoid 20 is deactivated, the elevating metal fitting 33 is lowered by the biasing force of the tension spring 34, and the repulsive force of the magnets 35 and 36 acts to fit the lid 31 into the through hole 12.

Note that the lid movement control means for horizontally moving the lid 13 shown in FIGS. 2a and 2b is not limited to the one described above, and although not shown,
A rack is formed in a horizontal position, a pinion is meshed with this rack, and this pinion is attached to a rod or wire (elevating metal fitting 16) integrally attached to the solenoid 20.
The same operation as described above can also be performed by engaging the connectors by means such as (equivalent to). Of course, a compression spring 19 for return operation is attached to the lid 13.

As explained above, the present invention provides a lid on the door frame side at a position facing the trigger bolt on the door side and presses the trigger bolt toward the door side, and also forms a through hole in the strike into which the lid fits, On the other hand, since a lid movement control means for moving the lid away from the trigger bolt is provided, the configuration is extremely simple, and the trigger bolt can be brought into contact with the strike lid by electrical control using a small solenoid. The latch bolt can be unlocked by releasing the latch bolt, and therefore the knob for moving the latch bolt in and out can be turned even from the outside, and by checking the signal from the outsider, the latch bolt can be unlocked. This has the advantage that the occupant can unlock the door at a location far away from the door without having to directly turn the lock knob from inside.

[Brief explanation of drawings]

Figures 1, 2a and 2b show an embodiment of the present invention. Figure 1 is a partially cutaway side view showing the locked state, and Figures 2a and 2b show the main parts of Figure 1. An enlarged partially cutaway side view and a sectional view taken along the - line, 3rd
The figure is a partially cutaway side view showing another embodiment of the invention, and FIG. 4 is a side sectional view showing the state after the operation of FIG. 3. In the figure, is the locking part, is the fixed part, 1 is the case,
2 is the knob, 3 is the thumb turn, 4 is the front, 5 is the latch bolt, 6 is the dead bolt, 7 is the trigger bolt, 8 is the case, 9 is the strike, 10,1
1 and 12 are through holes, 13 is a lid, 14 is a support shaft, 15 is a guide tube, 16 is a lifting metal fitting, 17 is a protrusion, 18 is a guide hole, 19 is a compression spring, 20 is a solenoid, 21
is a plunger, and 22 is a screw.

Claims (1)

[Claims] 1. A locking part equipped with a latch bolt that is always protruded by a spring and retracted by rotation of a knob, which is attached to the door side, and a through hole which is attached to the door frame side and into which the latch bolt fits when the door is closed. In a lock device equipped with a strike and a trigger bolt that locks the latch bolt by being brought into contact with the strike and retracted, the trigger bolt is pressed toward the door at a position facing the trigger bolt on the door frame side. 1. A lock device comprising: a lid that fits the trigger bolt; a through hole into which the lid fits is formed in the strike; and lid movement control means for moving the lid and separating it from the trigger bolt.