KR200419098Y1 - Valve opening-closing apparatus - Google Patents

Abstract

The present invention relates to a valve opening and closing device. Valve opening and closing device according to the present invention is for opening and closing the on-off valve for supplying or supplying the fluid, the valve opening and closing is provided with a motor for forward and reverse rotation to drive the on-off valve, and a control unit for applying a drive signal to the motor An apparatus, comprising: a drive gear (320) coupled to a rotating shaft (311) of the motor (310); A driven gear 340 geared to the drive gear 320 so as to rotate together with the drive gear 320; A rotating body 350 that is rotatable when the driven gear 340 is rotated, and is rotatably installed at a predetermined section with respect to the driven gear 340; A power transmission member for operatively connecting the rotating body 350 and the opening / closing valve 225 so that the opening / closing valve 225 rotates together when the rotating body 350 rotates; And a rotation angle sensing means by sensing a rotation angle of the rotating body 340. When it is detected that the predetermined angle is rotated by the rotation angle sensing means, the driven gear 340 is rotated based on the signal. It characterized in that it is configured to be reversely rotated by the motor 310 in a section capable of idling with respect to the entire (350).

Description

Valve opening-closing apparatus

1 is a perspective view separately showing a preferred embodiment of the valve opening and closing device according to the present invention.

Figure 2 is a plan view showing a coupled state of the embodiment of the present invention in the upper case is separated.

3 is a plan view showing a coupled state of the present invention embodiment.

4 is a cross-sectional view of the driving unit according to the embodiment of the present invention.

5 is a perspective view of a driven gear and a rotating body of the driving unit according to the embodiment of the present invention.

Figure 6a is an operation diagram showing an operation process in which the driven gear is automatically rotated in one direction according to an embodiment of the present invention.

6b is an operation diagram showing an operation process in which the driven gear is automatically rotated in reverse according to an embodiment of the present invention.

Figure 7a is an operation diagram showing an operation process in which the driven gear is automatically rotated in the other direction according to an embodiment of the present invention.

Figure 7b is an operation diagram showing an operation of automatically rotating the driven gear in accordance with an embodiment of the present invention.

8a, 8b is an operation diagram showing an operation process of rotating the rotating body manually according to an embodiment of the present invention.

Figure 9a, 9b is an operation diagram showing an operation process of rotating the rotating body manually according to an embodiment of the present invention.

Figure 10 is a block diagram showing a control process of the embodiment in the present invention.

11 is a state diagram used in the present invention embodiment.

* Description of the symbols for the main parts of the drawings *

310 .... motor 320 .... drive gear

330 .... Reduction Gear Group 340 .... Following Gear

350 .... Rotatable 360 ... Variable resistance

341 .... Jagged section 351 .... Jagged jaw

The present invention relates to a valve opening and closing device, and more particularly, when the valve is operated in the manual mode, the structure is improved to prevent breakage and failure of parts by avoiding a large load on the motor and gears for driving the valve. To a valve opening and closing device.

In general, the valve is disposed in the connection pipe through which the fluid flows, and serves to supply or block the fluid flowing in the connection pipe to a product such as a gas range or a gas heater.

In particular, a gas stove mainly used in the home is an essential product for the life to be able to cook food, conventionally open the valve by using a valve knob to supply gas such as LPG to the gas range, and supply The cooked food is cooked by igniting the gas into a gas range.

Of course, once the food is cooked, for safety, the valve is manually closed using the valve handle to block the gas supply to the gas range.

In this type of manual opening and closing of the valve, if the user does not close the valve manually after cooking food, there is a problem that a gas leaks and a fire occurs.

Therefore, recently, even when the user does not close the valve manually, the development of a valve opening and closing device that automatically closes the valve after a certain time has been made.

However, even when the valve is automatically opened and closed, the user frequently operates the valve knob manually. Therefore, even in this type, a large force acts on the motor and gears for automatically opening and closing the valve, resulting in a problem that the motor and the gears are damaged or the life thereof is shortened.

In particular, in a structure in which reduction gears are provided in order to reduce the torque acting on the motor and increase the torque acting on the load, more force is applied to the motor and the gears, thereby reducing the durability of the motor and the gears. .

Therefore, the present invention has been devised to solve the above problems, the object of the present invention is to open and close the valve automatically, the user can open and close the valve manually without a large force, and at the same time the motor It is an object of the present invention to provide an improved valve opening and closing device for improving durability of gears and gears.

The present invention for achieving the above object is to open and close the opening and closing valve for supplying or supplying fluid, the motor is forward and reverse rotation to drive the opening and closing valve, and the control unit for applying a drive signal to the motor is provided A valve opening and closing device, comprising: a drive gear coupled to a rotating shaft of the motor; A driven gear geared to the drive gear to rotate with the drive gear; A rotating body which is rotatable when the driven gear is rotated and is installed to be idling for a predetermined period with respect to the driven gear; A power transmission member for operatively connecting the rotating body and the opening / closing valve so that the opening / closing valve rotates together when the rotating body is rotated; And a rotation angle sensing means for sensing a rotation angle of the rotating body, and when it is detected that the predetermined angle has been rotated by the rotation angle sensing means, the driven gear can idle with respect to the rotating body based on the signal. It is configured to be reversely rotated by the motor.

The rotating body has a locking jaw and a transmission gear portion coaxially disposed with the driven gear, and the power transmission member is a driven gear connected to the transmission gear of the rotating body and dynamically connected to the on / off valve, The driven gear is provided with a locking portion provided at a position capable of pressing the locking jaw while the driven gear is rotated. In the section where the locking portion presses the locking jaw, the rotating body is rotated together with the driven gear. In the section spaced apart from the locking step, the rotating body is configured to idle against the driven gear.

In order to reduce the rotational ratio of the driven gear with respect to the drive gear, it is preferable that a reduction gear group is disposed between the drive gear and the driven gear.

The rotation angle detecting means is preferably a variable resistor.

Valve opening and closing device according to the present invention having such a configuration does not take a large force when manually operating the on-off valve can increase the user's convenience, has the advantage of improving the durability of the gears and the motor.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.

Figure 1 is a perspective view showing a separate embodiment of the valve opening and closing device according to the present invention, Figure 2 is a plan view showing a coupling state of the present invention embodiment in the upper case is separated, Figure 3 is a combination of the present invention embodiment 4 is a cross-sectional view of a driving unit according to an embodiment of the present invention, and FIG. 5 is a perspective view of a driven gear and a rotating body of the driving unit according to an embodiment of the present invention.

As shown in these drawings, the external appearance of the valve opening and closing device of the present embodiment includes the first and second case members 210 and 220 forming the lower case and the third and fourth case members 230 and 240 forming the upper case.

The battery unit 212, the control unit 260, and the driving unit 300 are accommodated in the first case member 210, and the opening and closing valve 225 is disposed in the second case member 220. The third case member 230 is provided with an operation unit 232 for allowing a user to automatically open and close the on / off valve 225, and a through hole to allow the on / off valve 225 to be exposed to the outside. 230a).

The fourth case member 240 is detachably coupled to the third case member 230 to facilitate replacement of the battery accommodated in the battery unit 212.

The drive unit 300 is for transmitting power to the on-off valve 225, the control unit 260 is for applying a drive signal to the motor 310 provided in the drive unit 300, the operation unit ( 232 transmits an input signal to the controller 260 to allow the motor 310 to perform a specific operation.

Of course, although not shown, the control unit 260 and the operation unit 232 are electrically connected, and the control unit 260 and the driving unit 300 are electrically connected.

Here, the driving unit 300 for transmitting power to the on-off valve 225 includes a motor 310, a drive gear 320, a driven gear 340, a rotating body 350 and the rotation angle detecting means 360. It is done by

In addition, the drive unit 300 includes a reduction gear group 330 disposed between the drive gear 320 and the driven gear 340 to reduce the rotation ratio of the driven gear 340 with respect to the drive gear 320. It is preferred to be provided. The reduction gear group 330 includes a first reduction gear 331, a second reduction gear 332, a third reduction gear 333, and a fourth reduction gear 334, and each reduction gear includes a large reduction gear and a small diameter. Have a gear

The motor 310 is capable of forward and reverse rotation, and the drive gear 320 is coupled to the rotation shaft 311 of the motor 310.

The first reduction gear 331 is rotatably coupled to the first fixed shaft 301, and the large gear 331a of the first reduction gear 331 is connected to the drive gear 320.

The second reduction gear 332 is rotatably coupled to the second fixed shaft 302, and the large reduction gear 332a of the second reduction gear 332 is a small reduction gear of the first reduction gear 331. 331b.

The third reduction gear 333 is rotatably coupled to the third fixed shaft 303, and the large reduction gear 333a of the third reduction gear 333 is the small reduction gear of the second reduction gear 332. 332b.

The fourth reduction gear 334 is rotatably coupled to the second fixed shaft 302 coaxially with the second reduction gear 332, and the large gear of the fourth reduction gear 334 ( 334a is connected to the small-diameter gear 333b of the third reduction gear 333.

The driven gear 340 is disposed to be spaced apart from the drive gear 320, and is rotatably coupled to the third fixed shaft 303 coaxially with the third reduction gear 333. It is connected to the small-diameter gear 334b of the four reduction gear 334. In addition, the driven gear 340 is provided with a locking portion 341 in a position to press the locking step 351 to be described below during the rotation of the driven gear 340.

The rotor 350 is disposed coaxially with the driven gear 340 and rotatably coupled to the third fixed shaft 303.

As shown in FIG. 5, a locking jaw 351 is formed in the rotor 350. Therefore, in the section in which the locking portion 341 presses the locking jaw 351, the rotating body 350 is rotated together with the driven gear 340, and the locking portion 341 is moved from the locking jaw 351. In the spaced apart section, the rotor 350 is idling with respect to the driven gear 340.

The rotating body 350 is provided with a rotating angle detecting means capable of measuring the rotating angle of the rotating body 350. The rotation angle detecting means is used that can measure the rotation angle with respect to the third fixed shaft 303 of the rotating body 350, such as an infrared sensor, an encoder, a variable resistor 360.

In this embodiment, a variable resistor 360 is used as the rotation angle detecting means. The variable resistor 360 has a resistance value different according to the rotation angle of the rotating body 350, as is well known, and thus the variable resistance 360 is measured by measuring the resistance value. The rotation angle of the rotating body 350 can be calculated.

As such, the rotation angle detecting means measures the rotation angle of the rotating body 350 and generates a signal corresponding thereto when the measured rotation angle coincides with a predetermined angle. In the present embodiment, the predetermined angle refers to 90 degrees that the opening and closing valve 225 is rotated, the controller 260 is rotated in one direction after determining whether the rotation angle of the rotating body 350 is equal to 90 degrees The program for rotating the rotated motor 310 in the other direction by a predetermined angle is stored.

Here, the predetermined angle is when the on-off valve 225 is rotated in one direction by the rotation of the motor 310, when the on-off valve 225 is rotated in the other direction by manually operating the valve handle 224, The rotating body 350 refers to an angle that can be rotated relative to the driven gear 340 without being constrained to the driven gear 340.

Based on the signal generated from the variable resistor 360, the control unit 260 drives the motor 310 to cause the motor 310 to be rotated back at a predetermined angle. In this case, the driven gear 340 that is dynamically connected to the motor 310 is reversely rotated to the section that can be idle with respect to the rotating body 350, the rotating body 350 is driven driven 340 Can be rotated relative to).

In addition, the rotating body 350 has a transmission gear portion 352 disposed coaxially with the driven gear 340 and gear connected to the driven gear 250 to be described below. The transmission gear 352 is connected to the on-off valve 225 to provide a rotational force.

On the other hand, the present invention is provided with a power transmission member for dynamically connecting the rotary body 350 and the on-off valve 225 so that the on-off valve 225 rotates together when the rotating body 350 is rotated. . In this embodiment, the power transmission member is a driven gear 250 that is geared to the transmission gear portion 352 and is dynamically connected to the on-off valve 225 through the valve handle 224.

And, the valve handle 224 is coupled relative to the connection pipe 222 connected to the transport pipe (see Fig. 11, 100) for transporting the fluid, the on-off valve 225, the on-off valve It is coupled to be rotated with the 225, it is possible to manually rotate the opening and closing valve 225. Here, the on-off valve 225 is disposed inside the connecting pipe 100, a known ball valve is used as the on-off valve 225.

Hereinafter, the operation of the valve opening and closing device according to the present invention having the configuration as described above will be described in detail.

First, the operation of the valve opening and closing device according to the present invention to automatically supply the gas flowing into the connection pipe 222 to a product such as a gas range will be described.

When the operation unit 232 is operated, the control unit 260 operates the motor 310 provided in the driving unit 300 according to the operation signal.

When the motor 310 is rotated in one direction, the drive gear 320 coupled to the rotation shaft 311 of the motor 310 is rotated, so that the reduction gear group 330 by the drive gear 320 While rotating, the rotation ratio of the drive gear 320 is reduced.

In addition, the driven gear 340 rotates in one direction according to the rotation of the fourth reduction gear 334 of the reduction gear group 330. For reference, the one direction is clockwise, and the other direction to be described below is a counterclockwise direction.

As shown in FIG. 6A, when the locking portion 341 of the driven gear 340 presses the locking jaw 351 of the rotating body 350 while the driven gear 340 is rotated in one direction, The rotating body 350 along with the driven gear 340 is rotated in one direction to be in the position shown in the virtual line.

In this state, the on / off valve 225 which is dynamically connected to the rotor 350 is rotated in another direction by the rotation of the rotor 350 to maintain the supply of gas flowing into the connection pipe 224. To be able.

As such, when the rotating body 350 is rotated by a predetermined angle (90 degrees in this embodiment) by the driving of the motor 310, the rotating angle detecting means has the rotating body 350 moving in one direction. After detecting whether it has been rotated by 90 degrees, the detected signal is transmitted to the controller 260, and the controller 260 rotates the motor 310 in the other direction by the predetermined angle based on the signal. Release. The state in which the motor 310 is reversely rotated by a predetermined angle so that the driven gear 340 is reversely rotated by a predetermined angle is illustrated by a virtual line in FIG. 6B.

After the valve opening and closing device according to the present invention is operated as described above, the opening and closing valve 225 is in a state (open state) to maintain the supply of gas, and the driven gear 340 is rotated by a predetermined angle. It becomes the state that it is. Here, when the valve handle 224 is rotated in the other direction so that the on-off valve 225 can block the supply of gas, the state is shown in Figure 9a, this manual operation will be described later.

As described above, the motor 310 is operated in the other direction by operating the operation unit 232 as opposed to an operation process in which the motor 310 is automatically rotated in one direction so that the opening / closing valve 225 can maintain the supply of gas. The operation process of rotating will be described.

As shown in FIG. 7A, when the motor 310 is rotated in another direction while the on / off valve 225 is open, the engaging portion of the driven gear 340 is rotated while the driven gear 340 is rotated in the other direction. When the 341 presses the latching jaw 351 of the rotating body 350, the rotating body 350 is rotated in the other direction together with the driven gear 340 to be in the position shown in the virtual line.

In this state, the opening / closing valve 225, which is dynamically connected to the rotating body 350, is rotated in one direction by the rotation of the rotating body 350 to supply the gas flowing into the connecting pipe 222. Will block.

As such, when the rotating body 350 is rotated by a predetermined angle (90 degrees in this embodiment) by the driving of the motor 310, the rotating angle detecting means may be rotated by the rotating body 350. After sensing that the rotation by 90 degrees in the direction, and transmits the detected signal to the control unit 260, the control unit 260 rotates the motor 310 in one direction by the predetermined angle based on the signal Let it be. As shown in FIG. 7B, the motor 310 is rotated by a predetermined angle and the driven gear 340 is rotated by a predetermined angle.

After the valve opening and closing device according to the present invention is operated as described above, the opening and closing valve 225 is in a state (closed state) that allows the supply of gas to be shut off, and the driven gear 340 is rotated by the small vertical angle. It becomes the state that it is.

Next, a case of manually opening and closing the on-off valve 225 will be described.

8A is a state in which the on-off valve 225 is closed. In this state, when the valve handle 224 is rotated in the other direction (opening / closing valve opening direction), the on-off valve 225 is rotated by 90 degrees to supply gas to a product such as a gas range. When the on-off valve 225 is manually opened in this way, the driven gear 340 is reversely rotated by the predetermined angle as described above, so that the rotating body 350 rotates relative to the driven gear 340, that is, idle. You can do it.

Therefore, it is possible to turn the valve handle 224 without applying a large force, and since the force is not applied to the drive gear 320, the driven gear 340 and the motor 310 and the drive gear 320 and There is an advantage that can prevent damage to the driven gear 340 and the motor 310. Of course, since the force is not applied to the reduction gear group 330 disposed between the drive gear 320 and the driven gear 340, there is also an advantage that can prevent the damage to the reduction gear group 330.

In this state, when the valve handle 224 is rotated in one direction again (the opening / closing valve is closed), as shown by a dotted line in FIG. 8B, the on / off valve 225 is rotated by 90 degrees to block the supply of gas. Done. Even when the closing valve 225 is manually closed in this manner, the rotating body 350 is rotated relative to the driven gear 340 to prevent damage to the gears 320, 330, 340 and the motor 310. do.

On the other hand, the operating state shown by the solid line in Fig. 9a is a state in which the driven gear 340 is reversely rotated by a predetermined angle after the on-off valve 225 is automatically opened. In this state, when the valve handle 224 is rotated in one direction, the on-off valve 225 is rotated by 90 degrees to be in the position shown by the solid line in FIG. 9B. In this case, the on-off valve 225 blocks the supply of gas.

On the contrary, when the valve handle 224 is rotated in the other direction, the on-off valve 225 is rotated by 90 degrees to be in the position shown by the dotted line in FIG. 9B. In this case, the on-off valve 225 is in a position to supply gas.

As described with reference to FIGS. 9A and 9B, when the on-off valve 225 is manually opened and closed, the rotor 350 is rotated relative to the driven gear 340 so that the gears 320, 330, 340 and the motor ( It is possible to prevent damage to the 310.

The present invention is not limited to the embodiments described above but is defined by the claims, and it is obvious that various modifications and adaptations can be made in the technical field to which the present invention belongs.

For example, in the above, the case where the variable resistor 360 is used as the rotation angle detection means has been described as an example, but the rotation angle detection means may be an infrared sensor, an encoder, or the like.

The valve opening and closing apparatus according to the present invention having the configuration as described above is expected the following effects.

That is, in the present invention by improving the structure of the drive unit of the valve opening and closing device to enable the user to operate the on-off valve in the manual mode without applying a large force, there is an effect to increase the user convenience, the drive unit in the case of operating in the manual mode The gears and the motor provided in the do not have a large force is applied to prevent the damage to the gears and the motor.

Claims (4)

In the valve opening and closing device for opening and closing the on-off valve for supplying or supplying the fluid, the motor is rotated forward and backward to drive the on-off valve and the control unit for applying a drive signal to the motor, A drive gear 320 coupled to the rotation shaft 311 of the motor 310; A driven gear 340 geared to the drive gear 320 so as to rotate together with the drive gear 320; A rotating body 350 that is rotatable when the driven gear 340 is rotated, and is rotatably installed at a predetermined section with respect to the driven gear 340; A power transmission member for operatively connecting the rotating body 350 and the opening / closing valve so that the opening / closing valve 225 rotates together when the rotating body 350 rotates; And a rotation angle detecting means for detecting a rotation angle of the rotating body 340. When it is detected that the predetermined angle is rotated by the rotation angle detecting means, based on the signal, the driven gear 340 is configured to be reversely rotated by the motor 310 in a section capable of idling with respect to the rotating body 350 Valve opening and closing device characterized in that. The method of claim 1, The rotating body 350 has a locking jaw 351 and a transmission gear portion 352 coaxially disposed with the driven gear 340, The power transmission member is a driven gear 250 geared to the transmission gear portion 352 of the rotating body 350 and is dynamically connected to the on-off valve 225, The driven gear 340 is formed with a catching portion 341 provided at a position capable of pressing the catching jaw 351 while the driven gear 340 is rotated, and the catching portion 341 is caught with the catching jaw 351. In the pressing section, the rotating body 350 is rotated together with the driven gear 340, and in the section in which the locking part 341 is spaced apart from the locking step 351, the rotating body 350 is Valve opening and closing device characterized in that configured to idle against the driven gear (340). The method of claim 1, A valve opening and closing device, characterized in that the reduction gear group 330 is disposed between the drive gear 320 and the driven gear 340 to reduce the rotation ratio of the driven gear 340 relative to the drive gear 320. . The method according to any one of claims 1 to 3, The rotation angle detecting means 360 is a valve opening and closing device, characterized in that the variable resistance.

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