JPS6183779A - Clock lock - 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 relates to a clock lock that is attached to a metal door or an emergency exit door and that enables unlocking at a preset time, and in particular, relates to a clock lock that is attached to a metal door or an emergency exit door and that enables unlocking at a preset time. This invention relates to a clock lock that measures time more accurately and has a more precise time lock.

[Conventional technology]

Time locks, which have a built-in clock mechanism and allow unlocking only at the desired time, are essential equipment for metal doors and emergency exit doors.
Conventionally, a mechanical clock mechanism was used, and when locking the watch, the mainspring was turned up in time with the unlocking time. With such a clock lock, it is easy to tell if the unlock time is about one day later, but it is difficult to calculate when it is several tens of hours later, including a holiday, and in the case of a one-week scale, 168 hours are marked around the dial. Therefore, it was difficult to see and the accuracy was poor. If you turn it wrong, it won't open at the scheduled unlocking time and will unlock at an unexpected time, so it's a lot of stress when you turn it up, and it's difficult to set, inaccurate, and has to be set frequently. Considering these inconveniences, the application of today's electronic clocks has been awaited as soon as possible.

[Problem that the invention seeks to solve]

In view of the above-mentioned problems, an object of the present invention is to use a clear and easy unlocking time setting means to set unlocking times for one week as a basic schedule, and once set, the unlocking time can be repeatedly set at the scheduled time. You can temporarily change the unlocking time for that setting, and you can set irregular holidays such as holidays on a weekly basis, and on those holidays, you can perform unlocking with priority over the basic schedule. , to provide a clock lock that allows these changes and preferences to be cleared once implemented and unlocked by returning to the basic schedule the following week.

[Means and actions to solve the problem]

In order to achieve the above object, the present invention uses an electronic timer circuit as a clock mechanism, and uses a combination of logic gates to set and change a basic unlocking time schedule, and to prevent unlocking on irregular holidays. It is characterized by carrying out.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to drawings and examples.

FIG. 1 is a circuit diagram showing an example of a clock lock embodying the present invention. In the figure, the clock lock is assumed to have a basic schedule of one week as the desired period, and
It is equipped with a digital clock 1 that counts minutes and days of the week, a basic schedule memory 2 that sets the unlocking time for each day of the week, and a temporary setting memory 3 that also sets changes for each day of the week, and has a logic gate at the output terminal. combinations are connected. The first stage of the logic gate is an exclusive OR gate, and the second stage is an AND gate. A pair of exclusive OR gates and 14 AND gates are provided for each day of the week, and the outputs of the exclusive OR gates are A to N, and the outputs of the AND gate are A.
' to N'. In addition, the temporary setting memory 3
A flip-flop 4, which receives the output S of the digital clock 1 and the output R from the day-of-week count of the digital clock 1, is arranged to check whether there is a temporary setting, and the outputs Q and P of the flip-flop 4 are "1" or "0" is input to each of the pair of AND gates.

Needless to say, the weekly basic schedule is set in the basic schedule memory 2, and the changes or priorities are set in the temporary setting memory 3.

FIG. 2 is a partial circuit diagram showing only one day's worth of data in order to clearly explain the above embodiment. Hereinafter, the present invention will be explained in more detail with reference to two drawings.

Now, the hours and minutes of each day are output from the digital clock 1, and if the contents match the contents of the basic schedule memory 2 or the contents of the temporary setting memory 3, the output A of the first stage exclusive OR gate is output. ~N becomes “0”. As a result, the outputs A' to N' of the activated AND elements can be output only from the gate having the day of the week output. For example, if it is Sunday, it is A' or B'. Therefore, if the hour and minute data in the Sunday memory in the basic schedule and the hour and minute data from digital clock l match, A will be "0".
'', which activates the AND element of output A', and furthermore, if that time is the day of the week and there is an output from the day count of digital clock 1, it will be output from A', and becomes an unlock signal. Also, if there are settings in temporary setting memory 3 (
When setting, if the S input is set to "0"), the output Q of flip-flop 4 is "1' and P is 0", and the AND gate A' is not output, but can be output from B', and the change is made. Otherwise, the priority settings are executed. This flip-flop 4 is reset on the next day since the day of the week is different, and the output from the basic schedule memory 2 side becomes valid from the next period.

In addition, during irregular holidays, if you store data that will never match, such as 25:00, in the temporary setting memory, even if the output of B' takes priority, the hours and minutes will not change. Since they do not match, the unlock signal is not output and the purpose is achieved. When the day of the week arrives, a reset output is output from Q, the flip-flop returns to its original state, and the normal schedule can be executed again from the next period.

Therefore, to show an example of the conventional operation of the clock lock according to the present invention, the basic schedule memory is set to 8230 from Monday to Saturday, and the clock is unlocked at 8:30 from Monday to Saturday.

If you want to avoid unlocking on these irregular holidays, or change the unlocking time at the end of the month, etc., set the temporary setting memory to the previous day, etc. That way, the door will normally be unlocked at 8:30, and if you set a holiday or time change, the latter will be used thereafter, and the door will be unlocked again at 8:30 from the next week.

〔Effect of the invention〕

As explained above, according to the present invention, unlike conventional watch locks, there is no need to wind up the mainspring each time, the unlocking accuracy is high, and by having a temporary setting memory, it can be used even during irregular holidays. The present invention provides a clock lock that can be set and when this is executed, the unlocking time can be controlled according to the basic schedule, making the operation dramatically easier.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram showing an embodiment of a watch lock according to the present invention, and FIG. 2 is a partial circuit diagram thereof. 1... Digital clock 2... Basic schedule memory 3... Temporary setting memory 4... Flip-flop 5... Combination of logic gates

Claims (1)

[Claims] A clock lock that allows a clock signal emitted from a digital clock to pass through a preset clock by passing it through a combination of logic gates to activate the lock mechanism to the unlocking side. The setting is to set each unlocking time for a desired period as a basic schedule, and this setting will be repeated and continued unless there is a new setting, and the setting will be changed temporarily and irregularly. Either or both of the above is possible, such as giving priority to non-unlocking for holidays, and furthermore, once these changes or priorities are executed, they are cleared and the schedule returns to the basic schedule from the next period. Clock lock.