JPH0432462Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic lock, and more particularly to an electronic lock that can be held in an unlockable state mechanically without using electrical force.

Electronic locks are being used as door locks. In this electronic lock, when a code number is entered using a keyboard, for example, a signal based on the code is used to enable the lock to be unlocked, and in this state, for example, by operating a knob, the door can be opened. This electronic lock does not require a key, so there is no inconvenience such as having to carry a key individually for each user or leaving it in a place known only to each user.
Since there is no risk of losing it, its utility value is extremely great.

By the way, in conventional electronic locks, the above-mentioned unlockable state is maintained by electric force, for example, by operating a solenoid and electromagnetic force. If the lock is not unlocked, it is necessary to continue applying electromagnetic force to maintain the unlocked state. In such a case, if you cannot immediately unlock the door using the knob,
Power is consumed to maintain the unlockable state, shortening the life of the battery normally used as a power source.
To avoid this, it is possible to turn off the power after the unlockable state continues for a certain period of time, but if you do this, if the unlocking operation cannot be performed within this certain period of time, you will have to enter the PIN number again. This is troublesome.

Therefore, as described above, the present invention aims to improve the problem that conventional electronic locks use electrical force to maintain the unlockable state, which leads to high battery consumption. Once the lock is enabled, it is held by mechanical means, and thereafter it can be unlocked at any time by operating the operating section.
To provide an electronic lock that can be mechanically locked only by operating an operating part.

Next, one embodiment of the present invention will be described based on FIGS. 1 to 7.

FIG. 1 is an exploded view of an electronic lock, with reference numeral 1 indicating an operation panel mounted on the outdoor side, and 2 a locking mechanism section mounted on the indoor side. Reference numeral 3 denotes a lock main body that is embedded in the side of the door, and has a shaft 4 passed through it, and a built-in crank mechanism that converts the rotational motion of the shaft into linear motion, thereby enabling the lock body to act as a locking bolt 3a. It can now move forward and backward, allowing it to protrude outside when advancing.

The operation panel body 1 has a keyboard 1b for inputting a code number and a pilot lamp 1c for displaying the switch-on state attached to the panel frame 1a, and furthermore, the shaft 4 is passed through the panel frame 1a and an operation section is attached to the tip of the shaft 4. An outdoor knob 1d is installed.

As shown in the main part exploded view of FIG. 2, in the lock mechanism section 2, an operation control plate 21 as a fixing member is formed in an oblong U-shape in horizontal cross section, and a slide frame 22 is vertically slidable in a recessed part of the operation control plate 21. A cam accommodating recess 2 that is fitted into the slide frame and has a cam sliding surface that is slightly enlarged from the short axis of an ellipse provided on the slide frame.
2a is fitted with a cam 23 having a sliding protrusion 23a, a shaft portion 23b of this cam 23 is inserted into a circular shaft hole 21a formed in the operation control plate 21, and the shaft 4 is passed through this shaft portion. Fixed. Here, a two-step engaging portion 22b is provided on one side of the upper end of the slide frame 22 toward the other side, and the tip of this engaging portion 22b is connected to a pressing piece 22'b of a constant width. It's summery. Further, on one side of the upper end of the operation control plate 21, there is formed a U-shaped piece 21b which has a vertically elongated U-shape in horizontal section and is open on the front side. A guide hole 21c for an actuating body, which will be described later, is formed, and a solenoid 24 is provided in a notched portion of the other side plate of the actuation control plate 21, and an actuating shaft 24a is provided at the tip of an actuating shaft 24a that is actuated by the solenoid. An actuating body 24c is provided which is always biased forward by a spring 24b wound around 24a. The actuating body 24c has a substantially L-shaped cross section, and one protrusion can be inserted into the guide hole 21c. Further, shaft holes are provided on both sides of the U-shaped piece 21b, into which the shaft 25a is inserted.
A stopper 25 is rotatably attached to a, and is fitted between the inner surface of the one side plate of the operation control plate 21 as a fixed member and the actuating body 24c to form a gap 25c.
hold. This stopper 25 is the U-shaped piece 21
The shaft 25a is formed to be smaller than the width between both sides of the shaft 25a.
The spring 25b, which is wound around the large-diameter portion provided in the main body, is always biased downwardly in a weak state. Further, a spring 26a is wound around a shaft portion protruding from the base end of the push button 26, and one end of the filament is wound around the spring 26a in the horizontal direction U.
An almost T-shaped unlocking lever 2 that is bent in a letter shape, and then bent at a horizontal right angle and then at a vertical right angle.
No. 7 U-shaped bent portions are fitted. This unlocking lever 27 has a horizontal free end that is formed in a lever insertion hole 24d formed in a protrusion at the upper part of the base end of the actuating body 24c.
The lower end of the vertical portion is inserted into the operation control plate 21.
It is inserted into the insertion part 21d provided in the raised part in the upper center of the upper end. Reference numeral 28 designates the lock mechanism section 2 frame, in which the operation control plate 21 is attached, the push button 26 is inserted into the button operation hole 28a in this attached state, and the mounting screw portions protrude from both sides of the lower end. Threaded portion 28b of 28b, 28'b
Wind the spring 28c (Fig. 3), and
One end of c is engaged with a locking piece 22c protruding from the lower end of the slide frame 22, thereby urging the slide frame downward. Further, the shaft 4 passes through the frame 28 and is connected and fixed to an indoor knob 29 as an operating section shown in FIG.

In the above, what is particularly important is that the width of the pressing piece 22'b and the stopper 25 and the distance between the actuating body 24c and the inner end of the guide hole 21c are set to 2 mm, 3.0 mm, etc.
It is to be formed to 3.5 mm, which enables the specific operation described below.

Next, the operation of this embodiment will be explained.

In the assembled state shown in FIG. 3, the above-mentioned components are locked. In this state, when the keyboard 1b in FIG. 1 is operated to input a recitation number, this input signal is subjected to the processing described later, and based on this processing, the solenoid 24 is operated, thereby causing the numbers A and 5 in FIG. The state shown in Figure A changes to the states shown in Figures 4B and 5B. In this state, the actuating body 24c is guided by the guide hole 21c and exits, and the front surface of the proximal end protrusion of this actuating body 24c and the actuation control plate 21
Since the distance 25c from the inner surface of the side plate instantaneously becomes larger than the width of the stopper 25, the stopper 25 is fitted into the gap of this distance by the spring 25b.
At the same time, the solenoid 24 is
is deactivated, whereby the actuating body 24c is advanced by the spring 24b and comes into contact with the side surface of the stopper 25. When the outdoor knob 1d shown in FIG. 1 is rotated to the left in this state, this rotational force is transmitted to the cam 23 via the shaft 4, the cam 23 is thereby rotated, and the slide frame 22 is raised accordingly. Here, since the width of the pressing piece 22'b at the upper end of the slide frame 22 is formed to be smaller than the width of the stopper 25, this pressing piece 22'b pushes up the aforementioned stopper 25 fitted into the gap of the above-mentioned interval. Rise through the void. When the stopper 25 is removed from this gap, the actuating body 2
4c is advanced by the spring 24b, and the pressing piece 22'b
comes into contact with. At the same time, a portion of the stopper 25 engages with the upper surface of the actuating body 24c. This state is the fourth
This is shown in Figures C and 5C, and in this state the bolt 3a is retracted and unlocked.
In addition, in Fig. 4, 3b is the front back plate of the lock, and 3c is the front back plate of the lock.
is the front plate. As a result of the above, the door is opened and a person can enter the room. At this time, even if the door is closed, the state shown in FIG. 4C is maintained. Next, when the person goes outside and closes the door again and wants to lock it, when the person turns the outdoor knob 1d to the right as shown in FIG. Body 24c is spring 2
Advance by 4b. In this state, turn the outdoor knob 1 again.
Even if d is rotated to the left, the tip of the pressing piece 22'b and the stepped portion of the engaging portion 22b are prevented from rising by the actuating body 24c, and the actuating body 24 is prevented from rising by the U-shaped piece 21b. Therefore, the outdoor knob 1d does not rotate. Note that when the lock is unlocked from inside the room, when the push button 26 is pressed, the unlock lever 27 pressed by the spring 26a is inserted through the lever of the operating body 24c centering on the vertical part inserted into the insertion part 21d. The other end inserted into the hole 21d rotates in a horizontal plane, and the actuating body 24c is moved out against the spring 24b, resulting in the state shown in FIG. It is unlocked because it can be set to the state shown in Figure 4 (c). From this state, the door can also be locked using the indoor knob 29. In the figure, , indicates the order of operation.

In addition, here, the sixth section regarding the control of the electronic lock will be explained.
A brief explanation will be given based on the configuration diagram in the figure and the operation explanatory diagram in FIG. 5 is the main control section, 6 is the calculation section, 7
8 is a memory unit, 8 is a recitation number set switch, 9 is a timer, 10 is a battery checker, and 11 is a buzzer. These are built into the lock mechanism section 2. In this configuration, when the start button on the keyboard 1b is pressed, (1) a power switch (not shown) is turned on, and this signal is sent to the main control section 5, which causes the main control section 5 to (2) turn on the pilot Turn on the lamp. Next, the main control unit 5 (3) stores 0 in the matching number storage area of the storage unit 7 and stores 1 in the key input circuit storage area. After this, the main control section 5 (4) resets the timer 9 and waits for a key input. (5) When a key input is made here, the main control section 5 determines this, and (6) waits for the input of the first digit or code of the recitation number. Here, the recitation number is set in advance to, for example, a four-digit number by the recitation number set switch 8. This set number is stored in the storage section 7.
is stored in In this state, (7) when the first number is input, the main control unit 5 causes the calculation unit 6 to compare and calculate the first number set above and the input first number, and if they match, ( 7)' This calculation unit 6 adds 1 to 0 in the matching number storage area and stores this total value 1 in the matching number storage area. After this, the main control unit 5 (8) irrespective of whether the numbers match or do not match, the calculation unit replaces 1 in the key input frequency storage area with 4 indicating the four digits stored in another storage area of the storage unit 7. 6, and based on this result, add 1 to the total value 2 in the key input number storage area (8)' in the same way as stored in the matching number storage area.
to remember. Then return to (4) above. The above is repeated every time the second to fourth numbers are input, and when the memory value in the key input frequency storage area reaches 4, the main control unit 5 (9) stores the number of matches. The calculation unit 7 determines whether the numerical value stored in the area is 4 or not.
If the result is 4, (10) reset the timer, and then (11) turn on the solenoid for 0.2 seconds. Also, if the above matching circuit is not 4, (12) reset the timer and (13) turn on the buzzer.
Let it ring for 10 seconds. This indicates that there was an error in inputting the PIN number. After the states (11) and (13) above, the main control unit 5 (14) causes the battery checker 10 to check whether the battery voltage is less than the specified volt, and when the battery output is equal to or higher than the specified volt, (14)
5) Turn off the pilot lamp 1c, then (1
6) Turn off the power. Additionally, if the above check results that the voltage is less than the specified voltage, (17) the buzzer will sound intermittently three times. This indicates that it is time to replace the battery. After this, move on to (15).
In addition, in the above (5), if there is no key input within 10 seconds, the main control section 5 shifts to the above (14).

In addition, if the outdoor knob 1d and the indoor knob 29 are made to rotate freely when the torque exceeds a certain level, it is possible to prevent the lock mechanism from being damaged.

As explained above, in the end, according to the present invention, once the unlockable state is made possible by electromagnetic force, this state can be maintained mechanically even if the electromagnetic force is removed, and after this, the mechanical Since it is possible to unlock and lock the door by means of the following means, it is possible to suppress power consumption of the power supply. In addition, the actuating body is moved by electromagnetic force to form a gap, this gap is held mechanically, and this holding can be detached by mechanical force through the gap, so these mechanical configurations By adjusting the dimensions of the parts, the gap formed by the electromagnetic force can be made smaller, and the moving distance of the actuating body can also be shorter, which also results in energy savings. Further, since the electromagnetic force only needs to operate the actuating body, if the actuating body is made lightweight, the electromagnetic force generating device can be operated with a light load.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the overall outline of an embodiment of the present invention, Fig. 2 is an enlarged exploded perspective view of the lock mechanism, Fig. 3 is a perspective view of the assembled state, and Fig. 4 is the same. FIG. 5 is an enlarged explanatory diagram of the main parts, FIG. 6 is a control configuration diagram of this embodiment, and FIG. 7 is a flowchart showing the operation. In the figure, 1d and 29 are outdoor knobs as operation parts;
Indoor knob, 3a is a dead bolt as a lock, 4
21 is a shaft, 21 is an operation control plate as a fixed member, 22 is a slide frame, 22b is an engaging part,
25c is the interval, 23 is the cam, 24 is the solenoid,
24b is a spring, 24c is an operating body, and 25 is a stopper as a spacing member.

Claims (1)

[Scope of utility model registration request] By rotating the operation part, the lock rod of the lock body is moved forward and backward through the shaft, and the cam is rotated and in conjunction with this, the slide frame is moved forward and backward along the fixed member, and the solenoid and spring operate. controls the movement of the slide frame by moving the actuating body forward and backward with respect to the fixed member;
When the slide frame is prevented from advancing, the electronic lock disables the rotation of the operating section and the exit of the lock lever, and the solenoid operates for a certain period of time upon input of a specific unlocking signal. and the actuating body which is urged in the advancing direction by a spring and is moved out by the operation of the solenoid against the elastic force of the spring to form a gap between the solenoid and the fixed member, and this actuating body is the solenoid. When the above-mentioned gap is formed by the operation of , it enters the gap,
The slide frame includes a spacing holder that is sandwiched between the fixed member and the actuating body to maintain a gap between them when the solenoid completes its operation, and an engagement portion that is narrower than the spacing holder, When the spacing body is sandwiched in the gap, the engaging portion can disengage the spacing body and advance into the gap, and when the actuating body is advanced into the gap, the actuating body An electronic lock characterized in that the electronic lock is provided with the slide frame that is prevented from advancing into the gap.