JP2568718Y2 - Pest Invasion Prevention Device in Time Clock - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing pest infestation in a time clock which automatically outputs an ultrasonic wave for repelling pests by using an internal mechanism as it is and automatically switches the frequency of the ultrasonic waves periodically. .

[0002]

2. Description of the Related Art Since the operation of an apparatus such as office equipment involves heat generation, a gap for heat dissipation is formed in a case of the apparatus. However, when the inside is warm, it is easy to induce pests such as cockroaches to invade, and the above-mentioned heat-dissipating gap often serves as a doorway for the pests. As a result, the insect pest touches the internal wiring and is electrocuted, body fluid oozes out and dissolves the pattern of the circuit board of the IC (integrated circuit), short-circuits the circuit board, or catches on the mechanism, causing an operation failure. Sometimes. In this way, invasion of pests causes equipment failure and removal work is difficult, so to prevent the pests from approaching the equipment, incorporate a device that outputs ultrasonic waves in a frequency band that the pests dislike Things are going on. However, if only the same frequency is output continuously, the pest eventually gets used to it, and it is not possible to expect a practical pest repelling effect unless the frequency is changed from time to time. Therefore, the conventional sound generating device is configured to switch and output some frequencies.

However, since the conventional frequency switching is performed by turning the knob by hand periodically, the switching may be forgotten, and even if it is forgotten, the operation failure does not immediately occur. In many cases, switching will not be performed. Therefore, it was not very practical.

[0004]

The object of the present invention is to solve the above-mentioned drawbacks, to output an ultrasonic wave that does not attract pests without adding special parts, and to prevent pest invasion in a time clock that automatically switches its frequency periodically. Its purpose is to provide.

[0005]

Means for Achieving the Object In order to achieve the above object, an apparatus for preventing pest infestation in a time clock according to the present invention includes a clock IC (integrated circuit), a sounding body, and a frequency band over which the pest is hated. A storage means for storing a program relating to clock-in and clock-out including a program for periodically switching a plurality of frequencies selected from sound waves and outputting the frequency from the sounding body; and a program stored in the clock IC and the storage means. And a control device for causing the card to stamp the time to and from work and outputting the ultrasonic wave selected from the sounding body.

[0006]

According to the above construction, a plurality of ultrasonic waves disliked by pests are controlled to be automatically switched periodically and output from the sounding body based on the program stored in the storage means by the control device. Therefore, the pest does not get used to the sound, and the invasion can be effectively prevented. In addition, since the frequency switching is performed automatically, no special attention needs to be paid to pest control. Further, the configuration can be made by using the components necessary for the time clock, and there is no need to equip new components, so that the cost can be reduced.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a block diagram of a time clock. This time clock includes a clock IC 1 and a sound generator (buzzer).
2, a storage device 3, a printing device 4, a control device 5 for instructing operations such as embossing and error sounds, a display device 6, a keyboard 7, and other attached devices.

The clock IC 1 is an integrated circuit for counting the date and hours, minutes, and seconds, and operates independently of turning on and off the power supply.

The sounding body 2 outputs, in addition to sound waves in the audible frequency range, ultrasonic waves in a certain frequency band that the pests dislike. Pests hate about 3 experimentally
It is known that the sound is in a frequency band from 1 KHz to 63 KHz. If there are any other valid frequencies, they can be input to the program.

[0010] The storage means 3 is a memory for storing a program relating to when and under what conditions the clock is printed on the clock, and under what conditions when the sounding body 2 sounds. As will be described later, a program for periodically switching four types of frequencies (31 KHz, 37 KHz, 47 KHz, and 62 KHz) selected from ultrasonic waves in a frequency band that is disliked by pests and outputting the same from the sounding body 2 is described below. include.

The display means 6 is a monitor for displaying the date, current time, error, work procedure and the like based on the operation of the clock IC 1, and the printing device 4 is provided at a predetermined date position on the attendance card. The keyboard 7 is for inputting setting of work or leaving, correction of time, manual operation, and the like.

The control device 5 instructs the printing device 4 and the sounding body 2 to perform predetermined operations based on a program stored in the storage means 3, and is constituted by a central processing unit (CPU). ing.

As other accessory devices, a card sensor 8, a step motor 9, and the like are additionally provided.

Each of the above-mentioned components is essential for the construction of a general time clock. In a normal case, when a time and attendance card is inserted into the slot of the time clock,
The controller 5 operates the stepping motor 9 in accordance with the time information such as the date, time and the like obtained from the clock IC 1 based on the detection by the card sensor 8 and the command information programmed in the storage means 3 to go to and from work. After the card has been introduced to a predetermined depth, the printing device 4 causes the time entry / exit time to be stamped in a predetermined column of the time entry / exit card.
Eject the attendance card. Then, when a key on the keyboard 7 is pressed or a card insertion failure occurs, the sounding body 2 emits a confirmation sound or a warning sound.

By the way, the storage means 3 stores the sounding body 2
A program for outputting a sound from is stored. In other words, as shown in FIG. 2, the program outputs a sound having a frequency in the audible band of 4 KHz when the key of the keyboard 7 is pressed and confirmed or when an error occurs. It is configured to be.

The above-mentioned sound generation program includes a program for automatically switching the frequency at midnight on Sunday once a week. In this case, whether or not it is Sunday is confirmed by the clock IC 1, and if it is not Sunday, the flag is turned off and the process proceeds to the next step. If it is Sunday, the flag is turned on and 1 is added to the number of the counter. The counter is set so that 1 is added to each number from "0" to "3", and when the total becomes 4, the counter returns to 0. The operation of adding 1 to the number of the counter may be performed based on a signal when the flag is turned on, as shown in FIG. Note that the setting is made so that the above-mentioned frequency is not oscillated from the sounding body 2 during printing.

Next, a sound of a frequency of 31 KHz is outputted when the number of the counter is "0", a sound of a frequency of 37 KHz when the counter is "1", and a sound of 47 KHz when the counter is "2". , And when the counter is "3", an ultrasonic wave having a frequency of 62 KHz is set to be output. Therefore, according to the number of the counter after the addition, the ultrasonic waves in the four inaudible bands are always output from the sounding body 2 except in the case where the ultrasonic waves are constant.

As described above, the ultrasonic waves disliked by the pests are always output except when the key is confirmed, an error warning is issued, and the printing operation is performed. In addition, since the sounds of the four kinds of frequencies are periodically switched, the pests are disturbed. Does not get used to the sound, and the intrusion can be effectively prevented. In addition, since automatic switching is performed, it is not necessary to pay special attention to repel pests. Furthermore, the above-mentioned pest invasion prevention apparatus can be configured by using components necessary for the time clock, and it is not necessary to equip new parts and devices, so that the cost can be reduced.

In the above example, the frequency is divided into four types, but the present invention is not limited to this. There may be three types, five types, and the like. Further, the frequency switching time is not limited to once a week.

[Brief description of the drawings]

FIG. 1 is a block diagram of a time clock according to the present invention.

FIG. 2 is a flowchart of prevention of invasion of pests in the storage means of the time clock.

FIG. 3 is a time chart of frequency switching of the pest intrusion prevention device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clock IC 2 Sounding body 3 Storage means 5 Control device

Claims (1)

(57) [Scope of request for utility model registration] A clock IC (integrated circuit), a sounding body,
Storage means for storing a program relating to clock-in and clock-out including a program for periodically switching a plurality of frequencies selected from ultrasonic waves in a frequency band disliked by pests and outputting from the sounding body, and the clock IC and storage means And a control device for stamping the time to and from work on the card based on a program stored in the memory and outputting an ultrasonic wave selected from the sounding body.