KR20120140511A - Auto locking device of gas valve - Google Patents

Abstract

PURPOSE: An auto locking device of a gas valve capable of preventing the overheating and the leaking of gas is provided to prevent the unnecessary usage of the gas. CONSTITUTION: An auto locking device of a gas valve includes an upper side opened type main body, a lid(5), a valve operation unit(6), a motor, a driven gear, a cam for operating a first micro-switch, the first micro-switch, a second micro-switch, a third micro-switch, a bodily sensor(10), a set-up time selection switch, and a motor driver. The lid is detachably combined to the upper side of the main body. The valve operation unit is for automatically closing the gas valve and manually opening the gas valve.

Description

Auto locking device of gas valve

The present invention relates to an automatic locking device for a gas valve, and more particularly, a user opens a gas valve for a while in a state where a person is not detected by a human body sensor while leaving the gas valve to go out or see other things in the room. If you forget that it is invented to prevent the use of unnecessary gas, and to prevent the occurrence of fire due to overheating and gas leakage by automatically closing the gas valve when a predetermined time (settable by the user) elapses.

In general, the gas is useful as an economical fuel with low pollution, and since the gas is inherently excellent in vaporization, it has a characteristic of rapidly diffusing and filling into the atmosphere (indoor) once leaking, and at this time, the ignition factor When applied, it contains a very dangerous element that can cause a large explosion.

Therefore, gas safety devices have been developed and used in the prior art, and most of them detect a gas leak and warn or close the gas valve, and a timer is mounted so that the user can set it regardless of whether the user is near the valve. In most cases, the valve is simply closed after a certain time.

However, in case of the gas leak detection device, gas leakage accident and gas overheating accident due to user's carelessness or carelessness cannot be prevented in advance, and the gas safety device using a timer is inconvenient to set a time every time. If the setting is incorrect, there is a possibility that a fire caused by a gas leakage accident or a gas overheating accident cannot be prevented in advance.

In addition, there is no conventional device that detects whether a human body is detected around the valve (ie, around the kitchen) and automatically shuts off the gas valve itself when there is no user, thus preventing unnecessary use of gas. There was also a problem that can not prevent the occurrence of fire due to overheating.

The present invention has been made in order to solve such a conventional problem, the human body detecting function, the time setting function, the continuous function, the automatic opening and closing function and the manual opening and closing function, etc. In addition, when the user goes out of the gas or forgets to open the gas valve, and leaves the gas valve for a while to see other things in the room, when the preset time has elapsed without a person being detected by the human body sensor, By closing the gas valve, it is possible not only to suppress unnecessary gas use, but also to prevent the occurrence of fire due to overheating and gas leakage, and to provide convenience for use without having to set a time. In addition, when the battery voltage drops below a certain voltage, an alarm sound or a light It is possible to know exactly when to replace the battery by displaying it, and in particular, when the voltage of the battery is weak and the motor for automatic opening and closing of the valve cannot be driven, it is possible to open and close the valve automatically to ensure the stability. The purpose is to provide.

The present invention device for solving the above problems,

A top opening main body having a rectangular housing-type valve fixing part provided with a valve operating port and a space in which a motor can be installed at one bottom thereof, and a battery accommodating part and a mechanism installing part respectively formed on both sides of the upper surface;

A lid having a valve operating hole through-hole and a battery accommodating lid and detachably coupled to an upper surface of the main body;

Corresponding to the direction of power of the knob and the motor rotated by the user is provided with a rotating rod coupling hole in the bottom is fitted with a rotating rod of the gas valve is fixed to the rotating through hole drilled in the mechanism installation portion of the main body A valve actuating mechanism which rotates and allows the gas valve to be manually opened or automatically closed;

A motor fixedly installed at one side of the mechanism installation part of the main body to generate power required to automatically lock the valve through a driven gear engaged with a drive gear fixed to a rotating shaft;

The first and second projections for driving the second and third micro switches at a predetermined angle on the bottom surface thereof, respectively, and are rotatably axially rotatable to the gear guide projections protruding out of the shaft through-holes from the mechanism installation portion of the main body. A driven gear that rotates in a clockwise or counterclockwise direction in response to the rotational direction of the locker, and locks the valve through the first microswitch operating cam and the valve operating port to turn on / off the second and third micro switches;

A locking projection provided with a switch operating piece and fixedly installed on the shaft of the valve operation port is formed by engaging a protrusion formed in an arc-shaped guide hole drilled in the driven gear, and the user manually rotates the valve operation port to turn the gas valve. When the motor is opened, the movable terminal of the first micro switch is connected to the normally open fixed terminal, but the human body is not detected during the set time, and the driven gear rotates in a predetermined direction and rotates itself because the microcomputer of the controller drives the motor. A first micro switch operation cam for allowing the movable terminal of the first micro switch to be connected to the normally closed fixed terminal;

The movable terminal is connected to the positive terminal of the battery, and the normally open fixed terminal is connected to the normally closed fixed terminal of the second micro switch, and is connected to the microcomputer in the control unit through a power on / off switch. Installed on the outside of the operation cam, when the user manually turns the valve operation opening to open the gas valve, the movable terminal is connected to the normally open fixed terminal by the first micro switch operation cam so that power voltage is supplied to each part. A first micro switch in which the movable terminal is connected to the normally closed fixed terminal when the gas valve is operated in the closing direction;

The movable terminal has a form connected to the positive terminal of the battery and is usually installed on one side of the bottom of the driven gear at a predetermined angle with the first micro switch, including when the user manually opens the gas valve. Since the movable terminal is pressed by the first projection of the driven gear and is connected to the normally open fixed terminal, and the human body is not detected for the set time, the motor rotates the driven gear by a predetermined angle so that the first valve is closed when the gas valve is closed. Prior to the switch's movable terminal, the corresponding movable terminal is connected to the normally closed fixed terminal so that the supply voltage is continuously supplied to each part until the gas valve is completely closed, and then the microcomputer's control is controlled by the "on" operation of the third micro switch. Receiving motor rotates reversely, moving terminal is always open by the first projection A second micro switch which cuts off battery power at the moment of being connected to and cuts off power of each part including a motor;

The movable terminal and the offset open fixed terminal are respectively connected to the microcomputer and the motor driving unit, and are installed on one side of the bottom of the driven gear having a predetermined angle with the second micro switch. The second projection of the driven gear is performed when the gas valve is completely closed. A third micro switch for generating a reverse drive signal, the movable terminal being connected to the normally open fixed terminal and generating a trigger pulse to the microcomputer to drive the microcomputer in the reverse direction;

A human body sensor fixedly installed at an upper portion of the lid and detecting whether the human body exists within a predetermined distance by an electrical signal;

Several set time selection switches for allowing a user to select and set any desired time;

A control unit having a microcomputer and performing an overall control function according to driving of each unit;

And a motor driver for driving the motor in a forward or reverse direction in response to a signal output from the microcomputer in the controller.

In addition, the control unit includes a low voltage detection unit for detecting whether the voltage of the battery falls below a predetermined voltage and delivers to the microcomputer; And a low voltage state notification unit for displaying a low voltage state of the battery by a light or an alarm sound under the control of the microcomputer when the low voltage detection unit detects that the voltage of the battery falls below a predetermined voltage.

In addition, the microcomputer input terminal of the control unit is characterized in that additionally installed for the valve forced restraint switch for operating the motor to lock the gas valve forcibly regardless of the user set time.

In addition, the above-mentioned several set time selection switches and the valve forcibly restraint switch installed to be exposed to the outside of the lid are further provided with light emitting diodes which indicate whether the operation state is blinking or lit. do.

In addition, between the case and the upper surface of the lid of the human body sensor is installed by the angle adjusting means consisting of a hinge is characterized in that the user can adjust the sensing range of the human body within a predetermined angle range.

In addition, the arc-shaped guide hole length and angle of the driven gear, which protrude on both bottom surfaces of the first micro switch operation cam and restrict the rotational angle of the first micro switch operation cam, are not rotated at all when the motor is stopped. Regardless of the driven gear, the user can rotate the first micro switch operation cam and the valve operation knob through the knob to fully open the gas valve, and the motor is not detected for the set time so that the motor When the gas valve is closed by rotating by a predetermined angle, the movable terminal of the second micro switch is first connected to the normally closed fixed terminal, and after a certain time, the first micro switch operation cam is rotated together with the driven gear so that the first micro switch Until the gas valve is completely closed. The power supply voltage is continuously supplied to the perception part. Also, when the gas valve is completely closed, the third micro switch is “on” and the motor rotates in reverse to rotate the driven gear in the reverse direction. The first micro switch operation cam keeps its stop until all power is shut off by connecting the movable terminal of the terminal to the normally open fixed terminal. It is characterized in that it is set so as to have a length and an angle sufficient to rotate when the gas valve is fully opened by rotating to independent of the driven gear in a stationary state.

At this time, the angle between the both ends of the arc-shaped guide hole is characterized in that it is set to be any value between 65-75 degrees from the center point of the driven gear.

As described above, according to the automatic locking device of the gas valve of the present invention, the opening and closing device mounted on the gas valve includes a human body detecting function, a time setting function, a continuous function, an automatic opening and closing function, and an opening and closing function by selective manual operation. In addition, when the user goes out of the gas or forgets to open the gas valve, and leaves the gas valve for a while before watching other things in the room, the user automatically detects when the preset time has elapsed without the detection of the human body sensor. By closing the gas valve, firstly, unnecessary use of gas can be suppressed, secondly, the occurrence of fire due to overheating and gas leakage can be prevented, and thirdly, the usability can be greatly improved by not having to set a time manually. Fourthly, when the battery voltage drops below a certain voltage, it sounds an alarm or lights. If the battery is weak and the voltage of the battery is too low to drive the motor for automatic opening and closing of the valve, it can be opened and closed manually. It is a very useful invention that can greatly secure and improve.

Figure 1 is an illustration of the installation state of the device of the present invention.
2 is an exploded perspective view of the apparatus of the present invention.
Figure 3 is a block diagram showing a connection state of the control unit and each unit of the present invention.
Fig. 4 (a) (b) is an operating state diagram of each micro switch, driven gear and first micro switch operation cam when the gas valve is in a completely closed state;
Fig. 5 (a) (b) is an operating state diagram of each micro switch, driven gear and first micro switch operation cam when the gas valve is fully opened by the user;
6 (a) and 6 (b) are diagrams illustrating the operation of the initial micro switches, driven gears, and first micro switch operation cams when the gas valve is automatically wound;
Figure 7 (a) (b) is an operating state of each micro switch, the driven gear and the first micro switch operation cam at the moment when the gas valve is automatically closed.
(A) and (b) of FIG. 8 shows the operating states of the first and second micro switches, the driven gears and the first micro switch operating cams at the moment when the third micro switch is "on" after the gas valve is automatically wound completely. Degree.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing an installation state of the apparatus of the present invention, FIG. 2 is an exploded perspective view of the apparatus of the present invention, and FIG. 3 is a block diagram showing a connection state between the control unit and each unit of the apparatus of the present invention.

4 (a) and 4 (b) show an operating state diagram of each micro switch, driven gear, and first micro switch operation cam when the gas valve is in a completely closed state, and FIG. b) shows an operation state diagram of each micro switch, driven gear and the first micro switch operation cam when the gas valve is completely opened by the user. FIG. 6 (a) (b) shows that the gas valve is Fig. 7 (a) (b) shows an operation state diagram of the initial micro switch, the driven gear and the first micro switch operation cam when the coil is automatically wound. And a state diagram of the driven gear and the first micro-switch operating cam. FIG. 8 (a) (b) shows the first and second moments when the third micro switch is “on” after the gas valve is automatically wound.The operation state diagram of the 2nd micro switch, a driven gear, and a 1st micro switch operation cam is shown.

First, the apparatus of the present invention is largely the top open main body 4 and the lid 5, the valve operating port 6, the motor 1, the driven gear (2), the first micro switch operation cam (3), the first Main technical components including the third micro switch (7)-(9), the human body sensor (10), several set time selection switches (11, -11n), the control unit (12), and the motor driving unit (13). Shall be.

At this time, the main body 4 has a rectangular housing type valve fixing portion 41 having a space for the valve operating port 6 and the motor 1 can be installed on one side of the bottom protruding and the number of batteries respectively on both sides of the upper surface It has a form that is injection-molded so that the payment portion 42 and the mechanism installation portion 43 is formed.

In addition, the lid 5 is injection-molded to include a valve operating hole through hole 51, a battery accommodating part lid 52, several switch exposed holes 53, and the like, and the lid 5 is provided on the upper surface of the main body 4. It has a form detachably coupled through a screw or the like.

In addition, the valve operating port (6) has an injection-molded form so that the rotary rod coupling port 61 is provided with the rotary rod of the gas valve 19 is fixed to the bottom end and the fixture installation portion of the main body (4) The valve 62 is pivotally rotatable in the axial passage hole 431 perforated in 43 to be rotated corresponding to the direction of power generation of the knob 62 and the motor 1 rotated by the user, and the gas valve 19 is manually opened. It will perform a function that causes it to be lost or closed automatically.

On the other hand, the motor 1 is a forward and reverse drive type DC motor fixedly installed to penetrate the valve fixing portion 41 on one side of the mechanical installation portion 43 of the main body 4, the output signal of the control unit 12 It generates the power necessary to automatically lock the gas valve through the driven gear (2) which is driven clockwise or counterclockwise and engaged with the drive gear (1a) fixed to the rotating shaft.

In addition, the driven gear 2 is provided with the first and second protrusions 21 and 22 for driving the second and third micro switches at a predetermined angle on the bottom thereof, respectively. It has a pair of arc-shaped guide holes 23 to which the engaging projections 32 which protrude on both sides of the cam 3 for switch operation are fitted and engaged, and pass through the shaft in the mechanism installation part 43 of the said main body 4. It has a configuration rotatably motivated by the gear guide protrusion 432 protruding out of the ball 431.

The driven gear 2 rotates in a clockwise or counterclockwise direction corresponding to the rotational direction of the motor 1 and locks the gas valve through the first micro switch operating cam 3 and the valve operating port 6. In addition to the motor power transmission function, the second and third micro switches 8 and 9 are operated on / off.

In addition, the first micro switch operation cam 3 is provided with a switch operating piece 31 at one end thereof, and is provided with a locking protrusion 32 protruding from both bottom surfaces in a state of being fixed to the shaft of the valve operation port 6. Is fitted into the arc-shaped guide hole 23 perforated in the driven gear 2 to have a combined shape.

When the gas valve is closed, the first micro switch operation cam 3 having such a configuration is in the form as shown in FIG. 4 (b), but when the user grasps the knob 62, the valve operation port ( When 6) is turned to open the gas valve 19, it rotates together with the valve operation port 6 and presses the movable terminal C of the first micro switch 7 as shown in FIG. 5 (a) (b). While maintaining the state connected to the normally open fixed terminal (A), since the human body is not detected for a set time, the driven gear (2) is driven by driving the motor (1) in the microcomputer 121 in the control unit 12 Direction so that the movable terminal (C) of the first micro switch (7) is connected to the normally closed fixed terminal (B) (that is, the battery power voltage supplied through the self is cut off) when rotating in the direction. Will be performed.

In addition, the first micro switch 7 has a movable terminal C connected to the positive terminal of the battery 17, and the normally open fixed terminal A is a normally closed fixed terminal of the second micro switch 8 ( It is connected to B) and at the same time has a form connected to the microcomputer 121 in the control unit 12 through the power on / off switch 14, and has a configuration installed outside the first micro switch operation cam (3).

When the user manually opens the gas valve 19 by turning the valve operating port 6, the first micro switch 7 is connected to the first micro switch operating cam 3 as shown in FIG. As shown in FIG. 5A, the movable terminal C is pressed and connected to the normally open fixed terminal A so that the voltage of the battery 17 is supplied to each part through itself, and the gas valve 19 is closed. And the movable terminal C is connected to the normally closed fixed terminal B when the first micro switch operation cam 3 is removed from the movable terminal C as shown in FIG. It is to perform the function to cut off the battery voltage supplied to each part through itself.

In addition, the second micro switch 8 has a movable terminal C connected to the positive terminal of the battery 17 similarly to the first micro switch 7, and the normally closed fixed terminal B has a first micro switch. The bottom of the driven gear 2 has a form that is in contact with the normally open fixed terminal (A) of the (7) and the power on / off switch 14, and has a predetermined angle with the first micro switch (7) It has a configuration installed on one side.

Such a second micro switch 8 is normally used in FIG. 4 (a) (b) and FIG. 5 (a) (b), including when the user manually turns and opens the gas valve 19. Similarly, the movable terminal C is pressed by the first protrusion 21 of the driven gear 2 and connected to the normally open fixed terminal A (that is, the power supply through the second micro switch is cut off). Since the motor 1 is rotated the driven gear 2 by a predetermined angle as shown in (b) of FIG. 6, the first micro switch 7 is closed when the gas valve 19 is closed. The movable terminal C is connected to the normally closed fixed terminal B before the movable terminal C of FIG. 6) (this state is the first and second micro switches 7 and 8 as shown in FIG. 6A). The voltage of the battery 17 is simultaneously supplied to the respective parts), and then the movable end of the first micro switch 7 after a predetermined time (for example, 1-2 seconds). (C) is connected to the normally closed fixed terminal (B) as shown in Fig. 7 (a) (b) until the gas valve 19 is completely closed even if the power supply through the first micro switch 7 is cut off. Make sure the power supply voltage is continuously supplied to each part.

After that, the third micro switch 9 is operated as shown in FIG. 8 (a) (b) by the second protrusion 22 of the driven gear 2 which rotates while the motor is continuously driven and the gas valve 19 is closed. Due to the " on ", the microcomputer 121 reversely rotates the motor 1 again in response to the motor control program stored in the microcomputer 121, and again by the first projection 21 of the driven gear 2, FIG. As shown in b), when the movable terminal C is connected to the normally open fixed terminal A (that is, both the first and second micro switches 8 having the two-column connection state together) As soon as the electrical "off" as described above) to cut off the power supply voltage of the battery 17 to cut off the power supplied to each part, including the motor (1).

In addition, the third micro switch 9 has a configuration in which the movable terminal C and the normally open fixed terminal A are connected between the microcomputer 121 and the motor driving unit 13, respectively, and the second micro switch 8 And a second projection 22 of the driven gear 2 at the moment when the gas valve 19 is forcibly completely closed due to the driving of the motor 1. 8, the movable terminal C pressed as shown in (b) of FIG. 8 is connected to the normally open fixed terminal A and generates a trigger pulse to the microcomputer 121, thereby causing the microcomputer 121 to drive the motor (1). ) Is driven in the reverse direction opposite to the previous driving direction.

On the other hand, in the above, the driven gear (2) for engaging the locking projections 32 protruding on both bottom surfaces of the first micro switch operation cam (3) is fitted to limit the rotation angle of the first micro switch operation cam (3). The length and angle (theta) of the arc-shaped guide hole 23 of were set within the range which can satisfy | fill three conditions.

Firstly, regardless of the driven gear 2 which is not rotated at all when the motor 1 is stopped, the user drives the first micro switch operation cam 3 and the valve operating port 6 via the knob 62. The gear 2 was set to have a length and an angle sufficient to rotate without sanction of the gear 2 to fully open the gas valve 19.

Secondly, when the human body is not detected for a time set by the user and the motor 1 rotates the driven gear 2 by a predetermined angle to close the gas valve 19, the first of the driven gear 2 is performed. The projection 21 is disengaged from the movable terminal C of the second micro switch 8 so that the movable terminal C of the second micro switch 8 is first connected to the normally closed fixed terminal B (actually the second). After the micro switch 8 is turned "on" and after a certain time (for example, 1-2 seconds), the first micro switch operating cam 3 is rotated together with the driven gear 2 so that the second micro switch ( 8) and the movable terminal C of the first micro switch 7, which is connected in the form of a two-row switch, are connected to the normally closed fixed terminal B (actually, the first micro switch 7 is " off " ") The voltage of the battery 17 causes the second micro switch 8 to close until the gas valve 19 is fully closed. We were set to have a sufficient length and angle to allow continuous supply to the legs.

Third, the motor 1 under the control of the controller 12 is turned on by the third micro switch 9 being turned on by the second projection 22 of the driven gear 2 at the moment when the gas valve 19 is completely closed. Rotates the driven gear 2 in the reverse direction in the opposite direction to the previous rotation direction, and the first protrusion 21 presses the movable terminal C of the second micro switch 8 again to always open the fixed terminal ( All powers are cut off by connecting to A) (i.e., the movable terminal C of the first micro switch 7 is connected to the normally open fixed terminal A due to the closing of the gas valve, and the second micro The first micro switch is operated until the movable terminal C of the switch 8 is pressed by the second protrusion 22 to be connected to the normally closed fixed terminal B so that the supply of the battery 17 voltage is cut off. The rotation of the cam 3 is kept stationary so that the user can use the knob 62 to Forcibly operating the first micro switch regardless of the driven gear 2 in a state in which rotation is impossible when the switch operating cam 3 and the valve operating port 6 are forcibly rotated to completely open the gas valve 19. The cam 3 and the valve actuator 6 were set to have a length and an angle sufficient to be able to rotate.

In view of these conditions, the inventors have selected and tested various angles. As a result, the angle θ between both ends of the arc-shaped guide hole 23 is any one of 65 to 75 degrees from the center of the driven gear 2. When set to a value, all three above conditions could be satisfied.

In addition, the human body sensor 10 is fixed to the upper portion of the lid 5 detects whether the human body is present within a certain distance to be transmitted to the microcomputer 121 in the control unit 12, the electrical signal, At this time, the human body sensor 10 is limited to the distance and angle to detect the human body itself.

Therefore, in the present invention, when the human body sensor 10 is not simply fixed when installing the lid 5, the angle adjusting means 101 consisting of a hinge and the like between the case and its upper surface of the lid 5 is further included. By installing it, the user can adjust the human body detection range of the human body sensor 10 in the predetermined angle range as shown in the virtual line of FIG. 10) Significantly improve human detection efficiency.

On the other hand, the several set time selection switches (11₁-11n) described above allow the user to select and set any desired time, for example, a setting capable of selecting 7 minutes, 15 minutes, 2 hours, continuous, and the like. A time selection switch may be installed, but the present invention is not limited thereto. If necessary, a user may set a 24-hour timer to set an arbitrary time, or install a time switch and a time up / down switch to set an arbitrary time. You can adopt any of a variety of other methods, such as setting it up.

Of course, when the human body is detected through the human body sensor 10 in the microcomputer 121 in the control unit 12, at the time set by any one of the set time selection switches (11₁-11n) described above. Only when the human body is not detected for a predetermined time, but the counting is performed using the built-in timer, the human body detection signal is detected from the human body sensor 10 while counting the predetermined time. Will reset the counting values up to now.

In addition, the control unit 12 includes a microcomputer 121 in which a predetermined control program and the like are embedded, and performs the overall control function according to the driving of each unit, and the motor driving unit 13 includes the microcomputer in the control unit 12. In response to the signal output from 121, the motor 1 is driven in the forward or reverse direction to control the driving of the motor that supplies the power required to automatically close the gas valve 19.

On the other hand, in the present invention, in addition to the above-described components in addition to the low voltage detecting unit 15 for detecting whether the voltage of the battery 17 is lowered below a predetermined voltage in the input terminal of the microcomputer 121 in the control unit 12 and At the same time, the output terminal of the microcomputer 121 receives the low voltage state of the battery 17 under the control of the microcomputer 121 when the low voltage detecting unit 15 detects that the voltage of the battery 17 is lower than the predetermined voltage. By installing a low voltage status notification unit 16 to display a light or an alarm sound so that the user can recognize the low voltage state of the battery as a visual or auditory and replace it in a short time.

In addition, in the present invention, the valve forced restraint switch 18 is further provided at the multi-function input terminal of the microcomputer 121 in the control unit 12, so that the situation where the gas valve must be forcibly locked as necessary. When this occurs), the user can forcibly lock the gas valve 19 by pressing the switch 18 for forced restraint regardless of the set time by forcibly operating the motor 1.

In addition, in the present invention, the light emitting diodes (LED'-LEDn) are respectively provided in the knobs of the several set time selection switches 11₁-11n and the valve forcing restraint switch 18 which are installed to be exposed to the outside of the lid 5. Is further installed to blink which setting time selection switch (11₁-11n), the user himself selected which setting time selection switch has not been detected by the human body, or whether the switch for forced valve restraint 18 has been operated. Alternatively, the user can easily visually recognize how many minutes or hours the timer is currently operating or whether the switch 18 for operating the valve force restraint has been operated.

It should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1: Motor 1a: Drive Gear
2: driven gear
21, 22: 1st and 2nd protrusion 23: arc-shaped guide hole
3: cam for first micro switch operation
31: switch operation piece 32: locking projection
4: Body
41: valve fixing portion 42: battery compartment
43: fixture mounting portion 431: shaft through hole
432: gear guide protrusion
5: Cap 51: Valve operating hole through hole
52: battery compartment lid 53: switch exposure hole
6: valve operation port
61: rotating rod coupler 62: knob
7-9: First to third micro switch
A: Normally open fixed terminal B: Normally closed fixed terminal
C: movable terminal
10: human body detection sensor 101: angle adjustment means
11₁-11n: Setting time selection switch
12 control unit 121 micom
13 motor drive unit
14: power on / off switch
15: low voltage detection unit 16: low voltage state notification unit
17: battery
18: switch for valve forced confinement
19 gas valve
LED₁-LEDn, LEDx: Light Emitting Diode

Claims (7)

A valve opening having a valve operating port and a space in which a motor can be installed at one bottom thereof, and a valve fixing part protruding from each other, and an upper surface open type body having a battery accommodating part and a mechanism installing part at both sides of the upper surface;
A lid having a valve operating hole through-hole and a battery accommodating lid and detachably coupled to an upper surface of the main body;
A valve operating mechanism pivotally rotatable in the shaft passage hole drilled in the mechanism installation part of the main body to rotate corresponding to the power direction of the knob and the motor rotated by the user and allow the gas valve to be manually opened or automatically closed;
A motor for generating power required for automatically closing the valve through a driven gear engaged with the drive gear fixed to the rotating shaft;
The first and second projections for driving the second and third micro switches at a predetermined angle on the bottom surface thereof, respectively, and are rotatably axially rotatable to the gear guide projections protruding out of the shaft through-holes from the mechanism installation portion of the main body. A driven gear that rotates in a clockwise or counterclockwise direction in response to the rotational direction of the locker, and locks the valve through the first microswitch operating cam and the valve operating port to turn on / off the second and third micro switches;
The locking projections protruding on both bottom surfaces of the valve operating port are fixedly fitted into the arc-shaped guide holes perforated by the driven gear, and when the user manually turns the valve operating hole to open the gas valve, the first micro Since the movable terminal of the switch is connected to the normally open fixed terminal, but the human body is not detected during the set time, the motor is driven by the microcomputer of the control unit, so the driven gear rotates in a predetermined direction and the movable terminal of the first micro switch rotates itself. A first micro switch operating cam for allowing the terminal to be connected to the normally closed fixed terminal;
The movable terminal is connected to the positive terminal of the battery, and the normally open fixed terminal is connected to the normally closed fixed terminal of the second micro switch, and is connected to the microcomputer in the control unit through a power on / off switch. Installed on the outside of the operation cam, when the user manually turns the valve operation opening to open the gas valve, the movable terminal is connected to the normally open fixed terminal by the first micro switch operation cam so that power voltage is supplied to each part. A first micro switch in which the movable terminal is connected to the normally closed fixed terminal when the gas valve is operated in the closing direction;
The movable terminal has a form connected to the positive terminal of the battery and is usually installed on one side of the bottom of the driven gear at a predetermined angle with the first micro switch, including when the user manually opens the gas valve. Since the movable terminal is pressed by the first projection of the driven gear and is connected to the normally open fixed terminal, and the human body is not detected for the set time, the motor rotates the driven gear by a predetermined angle so that the first valve is closed when the gas valve is closed. Prior to the switch's movable terminal, the corresponding movable terminal is connected to the normally closed fixed terminal so that the supply voltage is continuously supplied to each part until the gas valve is completely closed, and then the microcomputer's control is controlled by the "on" operation of the third micro switch. Receiving motor rotates reversely, moving terminal is always open by the first projection A second micro switch which cuts off battery power at the moment of being connected to and cuts off power of each part including a motor;
The movable terminal and the offset open fixed terminal are respectively connected to the microcomputer and the motor driving unit, and are installed on one side of the bottom of the driven gear having a predetermined angle with the second micro switch. A third micro switch for generating a reverse drive signal, the movable terminal being connected to the normally open fixed terminal and generating a trigger pulse to the microcomputer to drive the microcomputer in the reverse direction;
A human body sensor fixedly installed at an upper portion of the lid and detecting whether the human body exists within a predetermined distance by an electrical signal;
Several set time selection switches for allowing a user to select and set any desired time;
A control unit having a microcomputer and performing an overall control function according to driving of each unit; And a motor driving unit for driving the motor in a forward or reverse direction in response to a signal output from the microcomputer in the control unit.
The method according to claim 1,
The control unit includes a low voltage detection unit for detecting whether the voltage of the battery falls below a predetermined voltage and delivers to the microcomputer;
A low voltage state notification unit configured to display a low voltage state of the battery by a light or an alarm sound under the control of the microcomputer when the low voltage detection unit detects that the voltage of the battery falls below a predetermined voltage; Automatic locking of the valve.
The method according to claim 1,
The microcomputer input terminal of the control unit is a gas valve automatic lock device, characterized in that additionally installed for the valve forced restraint switch to forcibly lock the gas valve by operating the motor regardless of the user set time.
The method according to any one of claims 1 to 3,
Each of the knobs of the set time selection switch or the valve forced restraint switch installed to be exposed to the outside of the lid is further provided with light emitting diodes each of which indicates that the corresponding switch is operated by a user by flashing or lighting. Automatic locking of gas valve.
The method according to claim 1,
Between the case of the human body sensor and the upper surface of the lid further installed an angle adjusting means consisting of a hinge so that the user can arbitrarily adjust the detection range of the human body within a predetermined angle range characterized in that the automatic locking device of the gas valve .
The method according to claim 1,
The arc-shaped guide hole length and angle of the driven gear, which are provided with locking projections protruding from both bottom surfaces of the first micro switch operation cam, to limit the rotation angle of the first micro switch operation cam,
Regardless of the driven gear that does not rotate at all when the motor is stopped, the user can rotate the first micro switch operation cam and valve operation via the knob to fully open the gas valve, and the human body is not detected for the set time. Therefore, when the motor rotates the driven gear by a predetermined angle to close the gas valve, the movable terminal of the second micro switch is first connected to the normally closed fixed terminal, and after a predetermined time, the cam for operating the first micro switch is connected with the driven gear. Rotated together, the movable terminal of the first micro switch is connected to the normally closed fixed terminal so that the power supply voltage can be continuously supplied to each part until the gas valve is completely closed, and at the moment the gas valve is completely closed, the third micro The switch is "on" and the motor rotates in reverse to rotate the driven gear in the reverse direction. The rotation of the first micro switch operation cam remains stopped until the first projection connects the movable terminal of the second micro switch to the normally open fixed terminal and shuts off all power. An automatic locking device for a gas valve, which is set to have a length and an angle sufficient to rotate the operating cam and the valve operating port so that the gas valve can be rotated independently of a stationary driven gear when the gas valve is fully opened.
The method of claim 6,
And an angle between both ends of the arc-shaped guide hole is set to be any value between 65 and 75 degrees from the center of the driven gear.

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