KR101859943B1 - Device for controlling valve operation - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve opening / closing actuator, and more particularly, to a valve opening / closing actuator installed in a valve provided in a cold / hot water distribution pipe or a pipe body,
A valve opening and closing actuator of the present invention includes: a case coupled to an upper portion of a valve; A motor installed inside the case; A driving gear which rotates about a first rotational axis by the motor; A base panel on which a circuit board is mounted; A second rotating shaft coupled to rotate through the base panel and perpendicular to the first rotating shaft; A driven gear which meshes with the driving gear at a lower portion of the base panel and rotates about the second rotation axis and has an upper cam formed at a lower portion thereof; And a lower cam formed on the upper portion to be in contact with the upper cam to open and close the valve while moving up and down.

Description

[0001] The present invention relates to a device for controlling valve operation,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve opening / closing actuator, and more particularly, to a valve opening / closing actuator installed in a valve provided in a cold / hot water distribution pipe or a pipe body,

Generally, the indoor space of a house or a building requires heating. In order to heat the room, warm water is supplied to each room and then collected. In order to control the heating water supplied to each room, a distributor is installed. The distributor is composed of a part where hot water is supplied and a water return part circulating and returning to each room. A valve is installed in the water return part to control the flow rate of hot water supplied to each room.

2. Description of the Related Art In recent years, an automatic heating system capable of automatically maintaining a room temperature close to a set temperature has been widely spread when a user sets a desired temperature of the indoor space. In order to realize such an automatic temperature control heating system, a control unit is basically required, and a valve driving device for automatically controlling the opening and closing of the valve is required in the hot water distributor.

At this time, the control unit compares the room temperature set by the user with the actual room temperature to determine whether additional heating is necessary, and generates a signal for opening and closing the valve. The valve driving device opens the valve or closes the opened valve in order to supply the hot water in order to maintain the set room temperature by the signal generated from the control part.

However, the conventional valve driving apparatus has poor durability due to frequent opening and closing operations, and there is a problem that the valve can not be opened and closed quickly and precisely due to friction and power loss of the power transmission system.

Korean Patent Publication No. 10-2006-0097869 (2006.09.18.) Korean Patent Publication No. 10-2007-0048493 (2007.05.09.)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve opening and closing actuator that minimizes friction and power loss of a power transmission system and is excellent in durability.

According to an aspect of the present invention, there is provided a valve opening / closing actuator comprising: a case coupled to an upper portion of a valve; A motor installed inside the case; A driving gear which rotates about a first rotational axis by the motor; A base panel on which a circuit board is mounted; A second rotating shaft coupled to rotate through the base panel and perpendicular to the first rotating shaft; A driven gear which meshes with the driving gear at a lower portion of the base panel and rotates about the second rotation axis and has an upper cam formed at a lower portion thereof; And a lower cam formed on the upper portion to contact with the upper cam to open and close the valve while moving up and down.

The driving gear is spaced apart from the second rotary shaft at a lower portion of the driven gear and engaged with the driven gear. A plurality of first receiving grooves are formed in the upper portion of the driven gear, And the first ball member is in contact with the base panel to support the driven gear in a downward direction in which the drive gear is located and rotate in the first receiving groove when the driven gear is rotated.

Further, the valve opening and closing actuator of the present invention further includes a handle coupled to an upper portion of the second rotation shaft, wherein a plurality of engagement portions are formed inside the driven gear surrounding the second rotation shaft, And the driven gear is coupled to the motor via the latch gear, the motor being connected to the driven gear via the drive gear, the latch gear being connected to the motor via the latch gear, the latch gear being engaged with the engaging portion to rotate the driven gear in only one direction, And is rotated by any one of the handles.

And a second receiving groove into which the second ball member is inserted is formed at the uppermost end of the lower cam.

In addition, a connection portion is formed in the lower portion of the case, and a coupling nut for coupling the connection portion and the valve is provided in the connection portion, a fixing groove for inserting the elastic ring is formed on the outer side of the connection portion, So as to prevent the connection portion from being separated from the coupling nut.

The valve opening and closing actuator of the present invention can minimize the friction and power loss of the power transmission system, perform quick and precise opening and closing operation of the valve, and have excellent durability.

1 is a perspective view of a valve opening and closing actuator according to an embodiment of the present invention;
2 is a view showing the upper case and the lower case of the present invention separated;
3 is an exploded perspective view of a valve opening and closing actuator except for the case of the present invention.
4 is a longitudinal sectional view of a valve opening and closing actuator according to an embodiment of the present invention.
5 is an operational state diagram of a valve opening and closing actuator according to an embodiment of the present invention.

The present invention relates to a valve opening / closing actuator that is installed on a valve provided in a cold / hot water distribution pipe or a pipe body to automatically open or close a valve automatically and minimizes frictional and power loss of the power transmission system and provides excellent durability.

Hereinafter, a valve opening and closing actuator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a valve opening and closing actuator according to an embodiment of the present invention, FIG. 2 is a view showing the upper case and the lower case of the present invention separated from each other, FIG. 3 is an exploded perspective view to be. 4 is a longitudinal sectional view of a valve opening and closing actuator according to an embodiment of the present invention, and FIG. 5 is a view showing a valve opening and closing actuator according to an embodiment of the present invention in which a case is removed to show an internal operation structure.

1 to 5, a valve opening and closing actuator according to an embodiment of the present invention includes a case 100, a motor 200, a driving gear 300, a first rotation shaft 400, a base panel 500, A second rotary shaft 600, a driven gear 700 and a lifting portion 800. The case 100 is coupled to the upper portion of the valve. The case 100 may be divided into an upper case 110 and a lower case 120 as shown in FIGS. A handle 130 is positioned on the upper case 110 to manually open and close the valve. The handle 130 is coupled to the second rotary shaft 600.

The lower case 120 is coupled to the upper case 110, and the connection part 121 is formed at the lower part. Guide grooves (not shown) are formed on the inner side of the connecting portion 121 to guide the up and down movement of the elevating portion 800. The guide groove is formed at a position corresponding to the guide projection 820 formed on the elevation part 800, though not shown. The connection part 121 is provided with a coupling nut 122 for coupling the connection part 121 and the valve and a fixing groove 124 for inserting the elastic ring 123 is formed on the outer side of the connection part 121. The elastic ring 123 is inserted into the fixing groove 124 to prevent the connection portion 121 and the coupling nut 122 from separating from each other. The coupling nut 121 is fixed to the coupling portion 121 by using the elastic ring 123 and the coupling portion 121 is coupled to the valve using the coupling nut 122, It is not necessary to form a separate coupling structure in the coupling part 121 for coupling the coupling part 121 and the valve and the durability of the coupling part 121 connected to the valve can be improved.

The motor 200 is installed inside the case 100 to rotate the driving gear 300. That is, by a control signal for opening and closing the valve, thereby rotating the driving gear 300, thereby automatically opening and closing the valve.

The driving gear 300 rotates about the first rotating shaft 400 by the motor 200. The first rotary shaft 400 as shown in FIG. 3 connects the motor 200 and the driving gear 300 to transmit the power of the motor 200 to the driving gear 300. The driving gear 300 will be described in detail with the driven gear 700. [

The base panel 500 is mounted inside the case 100, and the circuit board PCB is mounted thereon. The circuit board is mounted with a micro switch or the like which cuts off electricity according to the rotation amount of the second rotation shaft 600. A driven gear 700 is positioned below the base panel 500.

The second rotary shaft 600 is coupled through the center of the base panel 500, the circuit board, and the driven gear 700 as shown in FIG. 4 and perpendicular to the first rotary shaft 400. 3, a latch gear 610 for rotating the driven gear 700 in only one direction is formed on the outer side of the second rotation shaft 600 passing through the center of the driven gear 700. As shown in FIG. A coil spring 620 is coupled to the lower portion of the second rotating shaft 600 to provide a resilient force to the driven gear 700 and the lifting portion 800. The second rotary shaft 600 may be manually rotated by the handle 130 located at the upper portion of the case 100. Although the structure of the second rotary shaft 600 is simplified, it may be formed of a plurality of parts for assembly with other components.

The driven gear 700 meshes with the driving gear 300 at a lower portion of the base panel 500 and rotates about the second rotating shaft 600. More specifically, the driving gear 300 and the driven gear 700 rotate about the first rotation axis 400 and the second rotation axis 600 which are perpendicular to each other, and the driving gear 300 rotates at a lower portion of the driven gear 700 And is engaged with the driven gear 700 by being spaced apart from the second rotary shaft 600.

An upper cam 710 is formed below the driven gear 700. 3, a plurality of first receiving grooves 730 through which the first ball member 720 is inserted are formed on the driven gear 700 facing the base panel 500, The ball member 720 contacts the base panel 500 and supports the driven gear 700 in a downward direction in which the driving gear 300 is located. The first ball member 720 minimizes the friction that may occur between the driven gear 700 and the base panel 500 while rotating in the first receiving groove 730 when the driven gear 700 is rotated. The drive gear 300 meshes with the driven gear 700 at the lower portion of the driven gear 700 and transmits the power to the driven gear 700. As a result, And receives a pressing force in the upward direction by the driving gear 300. The pressing force by the driving gear 300 generates friction between the rotating driven gear 700 and the base panel 500 located above the driven gear 700. Therefore, A first ball member 720 is disposed between the base panels 500. [ Since the driving gear 300 is in the form of a gear engagement that is partly engaged with the driven gear 700 by being spaced apart from the second rotary shaft 600, the moment generated in the driven gear 700 by the driving gear 300 The first ball member 720 is disposed between the driven gear 700 and the base panel 500 so that the rotational shaft of the driven gear 700 does not turn and the driven gear 700 rotates horizontally Respectively.

As shown in FIG. 3, a plurality of engaging portions 740 are formed on the inner side of the driven gear 700 surrounding the second rotation shaft 600. The engaging portion 740 is engaged with the latch gear 610 formed on the outer side of the second rotation shaft 600, so that the driven gear 700 is rotated in only one direction.

The driven gear 700 as described above can be rotated by the operation of any one of the motor 200 connected through the driving gear 300 and the handle 130 connected through the latch gear 610. [

The elevating part 800 is formed with a lower cam 810 which is in contact with the upper cam 710 at an upper portion thereof and is provided with a lower cam 810 at the upper part thereof, The valve is opened and closed while moving up and down. A guide protrusion 820 that moves along the guide groove is formed on the outside of the elevating part 800 so that the elevating part 800 moves only up and down without rotating. An opening / closing means (not shown) for shutting off the valve is coupled to the elevating portion 800 and is vertically moved together with the elevating portion 800 to open / close the valve.

3, a second receiving groove 840 into which the second ball member 830 is inserted is formed at the uppermost end of the lower cam 810. As shown in FIG. The second ball member 830 inserted into the second receiving groove 840 reduces the frictional force generated between the upper cam 710 and the lower cam 810 which are in contact with each other.

The operation of the valve opening and closing actuator according to the embodiment of the present invention will now be described in detail.

First, when a control signal is generated to shut off the valve while the valve is open, the motor 200 is operated to rotate the driving gear 300. Accordingly, the driven gear 700 engaged with the driving gear 300 rotates about the second rotation shaft 600. As the driven gear 700 rotates, the upper cam 710 and the lower cam 810 are brought into contact with each other while the upper cam 710 and the lower cam 810 are in contact with each other. At this time, the elevating part 800 descends and compresses the coil spring 620.

Thereafter, when a control signal for opening the valve is generated, the motor 200 is operated to rotate the driving gear 300, and the driven gear 700 meshing with the driving gear 300 rotates about the center of the second rotating shaft 600 . As the driven gear 700 rotates, the upper cam 710 rotates together, and the valve 800 is lifted by the elastic force of the coil spring 620 which is compressed.

In addition, the user may rotate the handle 130 directly to open or close the valve. At this time, when the user rotates the handle 130 in the direction of the arrow indicated on the valve, the latch gear 610 engages with the latching portion 740, and the driven gear 700 rotates. Closing operation of the valve by the upper cam 710 and the lower cam 810 is the same as the opening and closing operation by the motor 200. [

The valve opening and closing actuator according to the present invention is not limited to the above-described embodiment but can be variously modified and embodied within the scope of the technical idea of the present invention.

100: case, 110: upper case, 120: lower case,
121: connecting portion, 122: engaging nut, 123: elastic ring,
124: fixing groove, 130: handle, 200: motor,
300: driving gear, 400: first rotating shaft, 500: base panel,
600: second rotation shaft, 610: latch gear, 620: coil spring,
700: driven gear, 710: upper cam, 720: first ball member,
730: first receiving groove, 740: engaging portion, 800: elevating portion,
810: lower cam, 820: guide projection, 830: second ball member,
840: second receiving groove,

Claims (5)

A case coupled to an upper portion of the valve;
A motor installed inside the case;
A driving gear which rotates about a first rotational axis by the motor;
A base panel on which a circuit board is mounted;
A second rotating shaft coupled to rotate through the base panel and perpendicular to the first rotating shaft;
A driven gear which meshes with the driving gear at a lower portion of the base panel and rotates about the second rotation axis and has an upper cam formed at a lower portion thereof;
And a lower cam formed on an upper portion of the upper cam to be in contact with the upper cam to open and close the valve while moving up and down;
Wherein the drive gear is spaced apart from the second rotary shaft at a lower portion of the driven gear to engage with the driven gear,
A plurality of first receiving grooves into which the first ball members are inserted are formed in an upper portion of the driven gear facing the base panel,
Wherein the first ball member is in contact with the base panel to support the driven gear in a downward direction in which the drive gear is located and to rotate in the first receiving groove when the driven gear is rotated. delete The method according to claim 1,
And a handle coupled to an upper portion of the second rotation shaft,
A plurality of engagement portions are formed inside the driven gear that surrounds the second rotation shaft,
A latch gear is formed on an outer side of the second rotation shaft passing through the center of the driven gear to engage with the engaging portion to rotate the driven gear in only one direction,
Wherein the driven gear is rotated by one of the motor connected through the drive gear and the handle connected through the latch gear. The method according to claim 1,
And a second receiving groove into which the second ball member is inserted is formed at the uppermost end of the lower cam. The method according to claim 1,
A connection portion is formed at a lower portion of the case, and a coupling nut for coupling the connection portion and the valve is provided in the connection portion,
Wherein a fixing groove for inserting an elastic ring is formed on an outer side of the connection portion, and the elastic ring is inserted into the fixing groove to prevent separation of the connection portion and the coupling nut.

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