KR0122524Y1 - Device for automatically closing a door - Google Patents

Abstract

The present invention relates to an automatic door closing device of a refrigerator, the gear driving means is installed in an appropriate place inside the refrigerator door to act as a gear drive, and the shaft gear which is properly installed on one side of the refrigerator body and driven in engagement with the gear driving means. A drive shaft which is integrally formed with the drive shaft, a push switch installed at one side of the refrigerator door and the body to switch according to opening and closing of the door, and a door open signal detected by the push switch to determine a warning sound control signal and a door close A microcomputer for generating a control signal, a D / A converter for converting the digital warning sound control signal of the microcomputer into an analog signal, a warning sound driving unit for generating a warning sound through a speaker according to the analog warning sound control signal of the D / A converter; The motor driving unit for driving the driving motor in accordance with the door close control signal of the microcomputer In addition, by generating a warning sound according to the door open detection signal and driving the gear drive means to automatically close the refrigerator door, it is possible to prevent the damage of the storage caused by the opening of the refrigerator door accordingly the functionality of the system In addition, since the refrigerator door is automatically closed without a separate manual operation, convenience of use is also improved.

Description

Automatic door closing device of the refrigerator

1 is an explanatory diagram for explaining a door open warning device of a conventional refrigerator,

2 is an explanatory diagram for explaining a refrigerator equipped with the present invention device,

3 is a block diagram for explaining the operation of the present device,

4 is an operation explanatory diagram for explaining the operation of the gear drive means of the present invention device,

5 is a flowchart according to the present invention.

* Explanation of symbols for main parts of the drawings

1: door 2: gear driving means

3: Body 4, 4A, 4B: Shaft gear, 7th gear and 8th gear

5: drive shaft 6: push switch

7: Micom 8: D / A converter

9: speaker 10: warning sound driving unit

11: drive motor 12: motor drive unit

13: first gear 14: second gear

15: third gear 16: fourth gear

17: fifth gear 18: sixth gear

19A, 19B: Shaft

The present invention relates to an automatic door closing device for a refrigerator of the present invention, in particular, by fixing a gear driving means to a part of the refrigerator body and generating a warning sound according to a door open detection signal, and automatically closing the refrigerator door, thereby opening the refrigerator door. By preventing the damage caused by the storage, the increase of the functionality of the system, as well as automatically closes the refrigerator door without manual operation, automatic door closing device of the refrigerator to improve the convenience of use It is about.

In general, a refrigerator is used to store food for a long time by using cold air generated according to a refrigerant cycle. Therefore, if the door is opened has a significant impact on the freshness of the stored contents, recently, door open warning devices for informing the user of such a door open state has been developed and used. And such a refrigerator door open warning device is installed on one side of the refrigerator door 70 and the body portion 71 as shown in FIG. 1 and the push switch 72 to switch according to the opening and closing of the door 70 and The microcomputer 73 determines the door open signal detected through the push switch 72 and generates an alarm sound control signal, and the D / A converter 74 converts an analog signal from the digital alarm sound control signal of the microcomputer 73. And a warning sound driver 76 for generating a warning sound through the speaker 75 according to the analog warning sound control signal of the D / A converter 74.

On the other hand, looking at the operation of the door opening warning device as described above, first, the user opens the door 70 in the usual way to store the food and then close the door 70, in which case if the user door 70 is not completely closed If left unattended, the push switch 72 is turned on. That is, when the door 70 is opened, the switching contact of the push switch 72 is turned on, so that the door open detection signal of the push switch 72 is input to the microcomputer 73. Then, it is determined whether the door open detection signal of the push switch 72 is continuously input for the predetermined time for which the microcomputer 73 is set, and if the detection signal is continuously input even after the set time, the warning sound control signal is set to D. To the / A converter 74. The D / A converter 74 converts the digital warning sound control signal into an analog signal and inputs it to the warning sound driving unit 76. Accordingly, a sound such as a warning sound set in the warning sound driving unit 76, for example, a melody signal, is input. The signal is generated and emitted to the outside through the speaker 75. Therefore, the user hears the warning signal and recognizes that the door of the refrigerator is open and takes appropriate action.

However, since the door open warning device of the conventional refrigerator as described above only emits a beep sound when the refrigerator door is opened, when the user is left for a long time without hearing or ignoring this sound, the freshness of the stored matter stored in the refrigerator is severely reduced or severely Injury has occurred, and because the user must close the refrigerator door by manual operation whenever an alarm sounds, accordingly, there is a problem that considerably lowers the convenience of use.

The present invention has been devised to solve the above problems, by mounting a gear driving means to a part of the refrigerator body and generating a warning sound according to the door open detection signal and driving the gear driving means to automatically open the refrigerator door. By closing the door, it is possible to prevent the damage of the storage caused by the opening of the refrigerator door to increase the functionality of the system accordingly, as well as automatically close the refrigerator door without a separate manual operation so that the convenience of use is improved. It is an object of the present invention to provide an automatic door closing device of a refrigerator.

The present invention for achieving the above object, the gear drive means is installed in a suitable place inside the refrigerator door and the gear drive action, and the shaft gear is properly installed on one side of the refrigerator body and driven in conjunction with the gear drive means; An integrated drive shaft, a push switch installed between one side of the refrigerator door and the body to switch according to opening and closing of the door, and a door open signal detected by the push switch to determine an alarm sound control signal and a door close A microcomputer for generating a control signal, a D / A converter for converting the digital warning sound control signal of the microcomputer into an analog signal, a warning sound driver for generating a warning sound through a speaker in accordance with the analog warning sound control signal of the D / A converter; A motor driving unit for driving the driving motor in accordance with the door closing control signal of the microcomputer It is characterized by being built.

Hereinafter, the present invention will be described in detail based on the accompanying drawings. The apparatus of the present invention, as shown in Figs. 2 and 3, is installed in a suitable place inside the refrigerator door (1), and has a gear driving means (2) which acts as a gear driving function, and is properly installed on one side of the refrigerator body (3). And a drive shaft 5 integrally formed with the shaft gear 4 driven in engagement with the gear driving means 2, and between the refrigerator door 1 and one side of the body 3, A push switch 6 for switching according to opening and closing, a microcomputer 7 for judging a door open signal detected through the push switch 6 and generating a warning sound control signal and a door close control signal; 7) a D / A converter 8 for converting the digital beep control signal of the digital signal into an analog signal and a beep driver 10 for generating a beep sound through the speaker 9 according to the analog beep control signal of the D / A converter 8; ) And according to the door close control signal of the microcomputer 7 It consists of a motor driving section 12 for driving the same motor 11.

As shown in FIG. 3, the gear driving means 2 is configured such that a plurality of small gears and large gears are engaged with each other and rotates. For example, in the device of the present invention, the sixth gears 13 to 13 may be formed. 18). In addition, the fifth gear 17 is engaged to interlock with the seventh gear 4A of the drive shaft 5, and the sixth gear 18 is engaged to interlock with the eighth gear 4B of the drive shaft 5. . The first gear 13 of the gear driving means 2 is connected to the shaft 9A of the drive motor 11.

Next, the action of the subject innovation in the configuration as described above. Explain the effect.

First, the user opens the door 1 of the refrigerator and removes or inserts food as needed, and then closes the door 1, if the user leaves the seat without completely closing the door 1. Push switch 6 is turned on. That is, when the door 1 is opened, as shown in FIGS. 3 and 4, the switching contact of the push switch 6 is turned on, and accordingly, the door open detection signal of the push switch 6 is controlled by the microcomputer 7. ) Is entered. Then, the microcomputer 7 determines whether the door open detection signal of the push switch 6 is continuously input for a predetermined time, for example, for about one minute, and as a result of the determination, the microcomputer 7 continues after the set time. If it is being input, the beep control signal is input to the D / A converter 8 and the door close control signal to the motor driver 12, respectively. Then, the D / A converter 8 converts the digital warning sound control signal into an analog signal and inputs the signal to the warning sound driving unit 10. Accordingly, the sound signal such as a horn set by the warning sound driving unit 10 is transmitted. It is generated and emitted to the outside through the speaker 9 for a predetermined time. At the same time as the above operation, the motor driving unit 12 is also operated in accordance with the door close control signal of the microcomputer 7 to drive the driving motor 11. Accordingly, the driving motor 11 is driven to drive the gear driving means 2. The first gear 13 of) also rotates. Then, the second gear 14 meshed with the first gear 13 is also rotated in conjunction with the third and fourth gears connected together to the same shaft 19B as the second gear 14 rotates. 15, 16) will also rotate.

In addition, when the third and fourth gears 15 and 16 rotate, the fifth and sixth gears 17 and 18 interlocked with each other also rotate. Accordingly, the seventh and eighth gears 4A and 4B of the drive shaft 5, which are engaged with and driven to the fifth and sixth gears 17 and 18, respectively, are also interlocked with each other. Since the fifth and sixth gears 17 and 18 are rotated along the meshing teeth of the seventh and eighth gears 4A and 4B. Therefore, the door 1 equipped with such gears 13 to 18 is pivoted toward the body with respect to the drive shaft 5, so that the door 1 is closed quickly. Therefore, the food inside the refrigerator is protected.

On the other hand, when described in more detail based on the accompanying drawings illustrating the operation of the present invention as follows.

First, as shown in FIG. 5, a flow chart shows that the door of the refrigerator is currently open by going to the door open determination step S2 through an initial state S1 which is a system power-on and initial setting step. Then, when it is determined that the door of the refrigerator is opened, that is, the push switch is turned on, the microcomputer driving process (a) proceeds to the counting time of the microcomputer. The process proceeds to the determination step S3.

Then, if it is determined that the result determined in the set time elapsed judging step S3 is a predetermined time, e.g., 1 minute has passed, the alarm sound output step S4 and the drive motor control step S7 proceed, and the microcomputer alerts. Outputs a pulse signal corresponding to the negative and at the same time outputs a motor drive control signal for closing the door of the refrigerator.

Therefore, the signal output in the alarm sound output step (S4) proceeds to the D / A conversion step (S5), converts and outputs the digital signal output from the microcomputer to an analog signal, and then through the speaker output step (S6) To emit an alarm sound. And the control signal output in the motor drive control step (S7) is the control signal output in the motor drive step (S7) by operating the drive motor for driving the refrigerator door close through the motor drive step (S8), By rotating the two gears, the door of the refrigerator is rotated and closed.

At this time, it proceeds to the push switch off determination step (S9) to determine whether the door of the refrigerator is completely closed, it is determined that the door of the refrigerator is not completely closed, that is, the switch provided on one side of the refrigerator continues to be on state If it is determined that the operation, the push switch off judging step (S9) is repeated, and if it is determined in the push switch off judging step (S9), it is determined that the door of the refrigerator is completely closed, that is, the push switch is turned off If determined to be switched, the process ends.

As described above, the present invention, by mounting the gear drive means to a part of the refrigerator body and generates a warning sound according to the door open detection signal, and by driving the gear drive means to automatically close the refrigerator door, opening the refrigerator door It is possible to prevent the damage of the storage caused by this will increase the functionality of the system accordingly, as well as automatically close the refrigerator door without a separate manual operation to improve the convenience of use, and also to quickly open the door of the refrigerator By closing, there is an effect to reduce unnecessary power consumption due to the door open.

Claims (1)

Gear drive means (2) is installed so as to enable a plurality of interlocking rotation in a suitable place in the refrigerator door (1), and gear drive means (2) is properly installed on one side of the refrigerator body (3) A drive shaft 5 integrally formed with the shaft gears 4, 4A, and 4B driven in engagement with the drive shaft, and installed between one side of the refrigerator door 1 and the body 3 to switch according to opening and closing of the door 1; The push switch 6 which functions, the microcomputer 7 which judges the door open signal detected by this push switch 6, and generates a warning sound control signal and a door close control signal, and the digital of this microcomputer 7; A D / A converter 8 for converting a beep control signal into an analog signal, a beep driver 10 for generating a beep through the speaker 9 in accordance with the analog beep control signal of the D / A converter 8, and According to the door close control signal of the microcomputer (7) Automatic door closing device of a refrigerator according to claim consisting of the motor driving unit 12 for driving (11).