JPS63312479A - Lock device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a locking device in a temporarily tightened state that locks the door after a certain period of time has elapsed even if the door is not opened after the trigger bolt for locking the latch bolt is released. The present invention relates to a locking device in which the latch bolt is locked by operating the trigger bolt again.

(Prior art) Conventionally, when a door is closed in a temporarily tightened state without locking with a put bolt, the door side latch bolt in the case of the lock attached to the door side is inserted into the engagement hole of the strike on the door frame side. When the trigger bolt protrudes and is engaged, the trigger bolt contacts the strike plate and is retracted into the case of the lock on the door side, locking the latch bolt on the door side, and locking the outer knob as well, preventing it from turning. There is.

In order to perform the above-mentioned unlocking operation, the inventor of the present invention proposed the following locking device.

In other words, the door lock device is electrically unlocked from the door frame side, and the unlocking operation activates the electric strike solenoid on the door frame side, which moves the trigger bolt of the door lock device toward the door frame side. The latch bolt on the door side is released by protruding, and the lock is unlocked by simply energizing the solenoid momentarily (about 0.5 seconds), and this unlocked state is mechanically maintained. After the door is opened, it is restored from the mechanically held unlocked state to the original locked state.

[Problem that the invention seeks to solve]

By the way, with the above conventional locking device, if you leave the door closed without opening it after unlocking the strike on the door frame side, the door will remain closed and unlocked. There was a problem in that the unlocked state of the door could not be noticed, making it undesirable for doors intended for crime prevention.

This invention was made to solve the above problems, and by changing the restoring force of the spring that returns the solenoid to its original state after being energized or turned off, the door can be locked or unlocked without opening it. The purpose is to obtain a locking device that can be set to any of the following.

[Means for solving problems]

In this invention, a suppressor is provided on the door frame side to press the trigger bolt toward the door at a position facing the trigger string bolt, and the presser is configured to press the trigger bolt and release the pressure on the trigger bolt. An actuating plate i is provided,
A solenoid is provided to move the actuating plate when energized, and a spring is further provided to return the actuating plate to a desired position when the solenoid is de-energized or turned on.

[Effect]

In this invention, the actuating plate is raised by energizing the solenoid, disengaging the pressing tool and drawing it in, thereby protruding the trigger bolt and placing the latch bolt in the unlocked state. Also,
When the solenoid is energized or turned off, the actuating plate is lowered and engaged as a suppressor to press the latch bolt and lock the latch bolt. Furthermore, by changing the combined restoring force of the spring that returns the operating plate to the spring of the latch bolt, it is possible to maintain the unlocked state or return the door to the locked state without opening the door.

〔Example〕

Figures 1(a), (b), and (c) show an embodiment of the present invention, with Figure 1(a) being a partially cutaway side view, and Figure 1(b) being a partially cutaway side view. is a cross-sectional view taken along the line II--II in FIG. 1(a), and FIG. 1(c) is a cross-sectional view taken along the line II--II in FIG. 1(b). In these figures, A is a locking part on the door 1 side, and B is a fixing part on the door frame 2 side.

In the locking part A, 3 is a lock, 4 is a case of the lock 3, and 5 is a lock.
1 is a knob, 6 is a thumb turn, and 7 is a latch bolt, which is always projected by a spring (not shown) in the lock 3 and retracted by rotation of the knob 5. Reference numeral 8 denotes a trigger bolt, which is always biased in the protruding direction by a spring 8a inside &i'3, and can move in and out of the case 4, and is pulled into the case 4 when the door 1 is closed. The latch bolt 7 is configured to be locked. Reference numeral 9 denotes a dead bolt, which is moved in and out of the case 4 by turning the thumb turn 6 or a key (not shown). 10 is the front.

In the fixed part B, 11 is a strike, 12 is a strike plate, 13 is a through hole into which the latch bolt 7 is removably fitted, 14 is a through hole into which the trigger bolt 8 is removably fitted, and 15 is the dead hole. A through hole into which the bolt 9 is fitted in such a way that it can be moved in and out; 16 is a pressing tool that controls the trigger port 8 going in and out of the case 4; 17 is a guide shaft that is fixed integrally with the pressing tool 16; both ends have large diameters; The inside of the pressing tool 16 has a small diameter. Reference numeral 18 denotes a spring biased in a direction to push out the pressing tool 16 from the strike plate 12, and a spring weaker than the spring 8a of the trigger port 8 is used. 19 is a guide frame for the pressing tool 16, and 20 is a side plate provided on both sides, which are connected by a connecting portion 20a, the details of which are shown in FIG. 21 is a guide hole of the guide shaft 17; 22
2 is a protruding piece that engages the guide frame 19, and 23 is an operating plate that operates the pressing tool 16, which are arranged on both left and right sides and are connected by a connecting portion 23a. A cutout portion 23b and an inclined portion 23c are formed. 24 is a guide hole; 25 is a guide shaft that is attached to the side plate 20 and engages with the guide hole 24 of the operating plate 23; 26 is a solenoid that operates the operating plate 23;
7 is a plunger of the solenoid 26, which fixes the actuating plate 23. 28 is a spring biased in a direction to push out the plunger 27 from the solenoid 26, and 29 is a cover for the strike 11.

Next, the operation will be explained.

Figure 1(a) shows the door 1 closed and the deadbolt 9
This indicates a temporarily tightened state in which the press tool 1 is not locked.
The guide shaft 17 of 6 is connected to the actuating plate 23 as shown in FIG.
, the pressing tool 16 is pushed out toward the lock 3, presses the trigger bolt 8, and draws it into the case 4.
The latch bolt 7 is locked (this part is well known, so its details will be omitted). Therefore, even if the latch bolt 7 is pressed from the outside of the lock 3, for example, from the gap between the door 1 and the door frame 2, it can only be pulled into the case 4, and the door 1 cannot be opened.

Next, the case of opening the door 1 will be explained.

When the solenoid 26 is energized, the plunger 27 is attracted and pulls up the actuating plate 23 while compressing and biasing the spring 28. At the same time, both ends (large diameter portions) of the guide shaft 17 of the pressing tool 16 in the position shown in FIG.
Since the engagement with the trigger bolt 8 is released, it is pressed by the restoring force of the spring 8a of the trigger bolt 8 shown in FIG.
As shown in b), both ends (large diameter portions) of the guide shaft 17 are passing over the inclined portion 23c of the actuating plate 23, and the side plate 2o
As the trigger bolt 8 moves while being guided by the guide hole 21 of the lock 3, the trigger bolt 8 is pushed out from the lock 3. At this time, the spring 18 of the pressing tool 16 is compressed and urged, resulting in the state shown in FIG. 4. For this reason, the latch bolt 7 is released from the lock of the trigger bolt 8, so that it can move freely, and the door 1 can be opened by turning the knob 5.

Next, when the door 1 is opened, the pressing tool 16 engages the trigger bolt 8.
is released from the engagement, and returns to the initial position shown in FIG. 1(a). Next, the solenoid 26 is energized for a predetermined period of time set by a timer (not shown), for example, 10 seconds, and the actuating plate 23
Since the door is being pulled up, door 1 can be opened for these 10 seconds. Then, while the timer is running, open door 1 and
After 0 seconds have elapsed, the solenoid is de-energized due to time-up, the actuating plate 23 is lowered by the combined restoring force of each spring 1B and 2B, and the guide shaft 17 of the suppressor 16 moves toward the inclined portion 23.
3(a), and this state is fixed between the pressing tool 16 and the actuating plate 23.

Therefore, when the door 1 is closed, the trigger bolt 8 is
6 and pulls into the lock 3, fixing the latch bolt 7.

In the above embodiment, the door 1 is opened after the solenoid 26 is energized, but in the case where the door 1 is not opened, the combined restoring force of the spring 28 of the solenoid 26 and the spring 18 of the pressing tool 16 is the trigger voltage. A case where the restoring force of the spring 8a is weaker and a case where it is stronger than the restoring force of the spring 8a will be explained.

First, the combined restoring force of each spring 2B and 1B or the latch bolt 8
If the restoring force is weaker than the restoring force of the trigger bolt 8, even if 10 seconds have elapsed since the actuating plate 23 was pulled up by the energization of the solenoid 26 and the energization of the solenoid 26 is turned off, Since the door 1 can be opened at any time by keeping the unlocked state pressed, the door 1 can be used as an emergency door 1 in the event of a disaster. Therefore, a timer is not required in this case.

Next, the combined restoring force of each spring 2B and 1B is the latch bolt 8
If the restoring force is stronger than that of spring 8a, solenoid 2
If the door 1 is kept closed for 10 seconds after the solenoid 26 is energized and the timer is activated, the restoring force of each spring 2B and 1B will be reduced. Since the pressing tool 16 presses the latch bolt 8 and holds the lock 3 in a locked state, it can be used as a security door 1.

FIG. 5 is a plan view of essential parts showing another embodiment of the actuating plate 23 of the present invention. In this embodiment, the shape of the notch 23b is vertically reversed from that of FIG. 3, and therefore the sloped portion 230' is reversed from the sloped portion 23c of FIG. Therefore, when the actuating plate 23 shown in FIG.
to unlock. That is, all operations are the reverse of the previous embodiment. In this case, the latch bolt 7 will not be kept unlocked unless the solenoid 26 is energized, but once the plunger 27 is attracted, a small holding current is sufficient, so there is no problem.

〔Effect of the invention〕

As explained above, the present invention provides a pressing tool that presses the trigger bolt toward the door at a position facing the trigger bolt on the door frame side, and the pressing tool presses the trigger bolt,
Further, an actuation plate is provided to release the pressure on the trigger bolt, a solenoid is provided to move the actuation plate when energized, and a spring is provided to return the actuation plate to the desired position when the solenoid is energized or turned off. So,
By appropriately selecting the combined restoring force of the solenoid and the spring of the pressing tool relative to the restoring force of the trigger hold spring, the door remains unlocked even if the door remains closed after the solenoid is energized or turned off. Because the door is maintained, it can be used as an emergency system where the door can be opened at any time, and it can also be used as a crime prevention system where the door cannot be opened after a predetermined period of time has elapsed after it has been locked. It can also be made into a world. In this way, there is an advantage that by replacing the spring, a locking device suitable for the purpose of use can be obtained.

[Brief explanation of drawings]

FIGS. 1(a) to (c) show one embodiment of the present invention. FIG. 1(a) is a partially cutaway side view, and FIG.
Figure 1(b) is a cross-sectional view taken along line ■-■ in Figure 1(a), Figure 1(c) is a cross-sectional view taken along line II-II in Figure 1(b), and Figure 2 is a cross-sectional view taken along line II--II in Figure 1(b). 1, FIGS. 3(a) and 3(b) are explanatory diagrams showing the operation of the actuating plate in FIG. 1 and the guide shaft of the pressing tool, and FIG. 4 is a diagram showing the shape of the side plate in FIG. FIG. 5 is a side view showing the state after the operation in a), and FIG. 5 is a plan view showing another embodiment of the actuating plate of the present invention. In the figure, A is the locking part, B is the fixed part, 1 is the door, 2 is the door frame, 3
is a lock, 5 is a knob, 7 is a latch bolt, 8 is a trigger bolt, 8a is a spring, 11 is a strike, 12 is a strike plate, 16 is a pressing tool, 18°28 is a spring, 19 is a guide frame, 2
0 is a side plate, 21 is a guide hole, 23 is an operating plate, 26 is a solenoid, and 27 is a plunger. Figure 5

Claims (1)

[Claims] a latch bolt that is attached to the door side and is constantly protruded by a spring and retracted by rotation of a knob; and a locking portion that includes a trigger bolt on the door side that locks the latch bolt; when the door is closed, the latch bolt is A locking device comprising: a fixing part having a strike on the door side that forms a through hole to be fitted and is retractable when the trigger bolt comes into contact with the fixing part; A pressing tool is provided to press the trigger bolt toward the door, and the pressing tool releases the action of pressing the trigger bolt toward the door by turning on or off the solenoid, and pushes the trigger bolt toward the door frame. an actuating plate that protrudes toward the door, and when the solenoid is energized or turned on, the pressing tool protrudes toward the door when the door is opened; and when the door is closed, the pressing tool projects toward the door; A locking device characterized in that the strike is provided with a spring that causes the pressing tool to protrude toward the door or holds it in a position where it does not protrude.