KR20210152902A - Actuator and Electronic Device comprising the same - Google Patents

Abstract

The present invention relates to an actuator comprising: a driving motor having a worm gear installed at an output shaft to manipulate a valve for adjusting the flow of heating water supplied to each room from a heating boiler; a deceleration gear train toothing with the worm gear; and an output gear toothing with the deceleration gear train. More specifically, the present invention relates to an actuator and an electronic device including the same, wherein the gears arranged on the deceleration gear train are formed with two stages, and at least one among the gears has a gear toothing release part installed thereon to be able to temporarily release a toothing state between the gears, thereby adding a manual release function for emergency by simple structural addition to enable a user to temporarily release the transmission of the driving force of the driving motor in emergency by simple manipulation.

Description

Actuator and electronic device including same {Actuator and Electronic Device comprising the same}

The present invention relates to a drive motor having a worm gear installed on an output shaft to operate a valve for controlling the flow rate of heating water supplied to each room from a heating boiler, a reduction gear train meshing with the worm gear, and an output meshing with the reduction gear train It relates to an actuator composed of gears and the like, and more particularly, at least one of the gears disposed in the reduction gear train is formed in two stages, and at least one of the gears temporarily releases the meshing state between the gears. By installing a gear disengagement to make it possible. It relates to an actuator and an electronic device including the same, by adding an emergency manual release function in addition to a simple structure so that a user can temporarily release the transmission of the driving force of the driving motor by a simple operation in an emergency.

A heating boiler is installed to supply heating water to each room in a general house, public facility, or office, and the heating boiler has a worm gear on the output shaft to operate a valve that controls the flow rate of heating water supplied to each room. An actuator is installed including an installed driving motor, a reduction gear train meshed with the worm gear, and an output gear meshed with the reduction gear train. Since the actuator does not have a function to temporarily release the transmission of the driving force of the driving motor in an emergency, there is a problem in that the heating water supply cannot be urgently adjusted in an emergency.

In addition, the actuator has a problem in that a slip phenomenon occurs due to the rotational force of the driving motor even when the external appearance of the motor having a circular structure is fixed in using the conventional driving motor fixing structure, and the power and control signals of the driving motor A lead wire connection method is used for electrical connection with the provided PCB. This lead wire connection method also has a problem in that disconnection occurs frequently due to the slip phenomenon of the driving motor.

In relation to gear release from the actuator for operating the valve for controlling the flow rate as described above, it is disclosed in Utility Model Registration No. 20-0393331 and Patent Registration No. 10-1590841.

The present invention has been researched and developed in order to solve the problems of the prior art as described above, and a drive motor having a worm gear installed on an output shaft to operate a valve for controlling the flow rate of heating water supplied to each room in a heating boiler, At least one of the gears arranged in the reduction gear train in the actuator consisting of a reduction gear train meshing with the worm gear and an output gear meshing with the reduction gear train is formed in two stages, and at least one of the gears is the By installing the gear meshing release unit to temporarily release the meshing state between the gears. An object of the present invention is to provide an actuator capable of temporarily releasing the transmission of the driving force of the driving motor by a simple operation by a user in an emergency by adding an emergency manual release function in addition to a simple structure, and an electronic device including the same.

An actuator according to the present invention for achieving the above object includes a case; a cover covering the case; and a drive motor mounted inside the case and the cover and having a worm gear installed on an output shaft; and the worm A reduction gear train meshed with a gear; And an output gear meshed with the reduction gear train; At least one of the gears disposed in the reduction gear train is formed in two stages, and at least one of the gears is It is characterized in that a gear engagement release unit is installed to temporarily release the meshing state between the gears.

In addition, the present invention is characterized in that the gear shaft formed long in the vertical direction is inserted into the center of the gear to which the gear engagement release unit is installed.

In addition, the present invention is characterized in that an elastic member is installed on the gear shaft so that the position of the gear at which the gear engagement releasing unit is installed can be restored.

In addition, in the present invention, a release cap for releasing a meshing state of some of the gears disposed in the reduction gear train is installed at the upper end of the gear shaft, and the release cap is accommodated in a groove formed in the cover and is received from the outside It is characterized in that when the release cap is pressed, the meshing state between the gears is temporarily released.

In addition, the present invention is characterized in that the drive motor is such that both sides of the outer cover are cut to form a flat surface.

In addition, the present invention is characterized in that the shaft housing, which is a space in which the gear shaft can be moved up and down when the release cap installed on the upper end of the gear shaft is pressed, protrudes from the inside of the case, while the gear shaft is rotationally supported. do it with

In addition, the present invention is characterized in that an elastic member is installed inside the output gear to absorb an external shock.

In addition, the present invention is characterized in that the electronic device including the actuator as described above.

The actuator according to the present invention includes a drive motor having a worm gear installed on an output shaft to operate a valve, a reduction gear train meshed with the worm gear, and an output gear meshed with the reduction gear train. At least one of the gears is formed in two stages, and at least one of the gears is provided with a gear disengagement unit to temporarily release the meshing state between the gears. In addition to the simple structure, an emergency manual release function is added so that the user can temporarily release the transmission of the driving force of the driving motor by a simple operation in an emergency.

In addition, the present invention has the effect of absorbing the shock during abnormal high pressure of the fluid in the valve and preventing damage to the actuator in advance by installing an elastic member inside the output gear to absorb the shock generated from the outside. .

1 is an exploded perspective view of an actuator according to the present invention;
Figure 2 is an external perspective view of the actuator assembly according to the present invention is completed;
3 is an exploded perspective view of the motor and gear assembly, the case and the cover in which the driving motor and the gear train are assembled in FIG. 1;
4 is a view showing a case, a motor and a gear assembly in the present invention;
5 is a detailed enlarged view of the coupling structure of the gear shaft and the fourth gear in the present invention;
Figure 6 (a) is a cross-sectional view of the motor and the gear assembly before the meshing state between the gears is released, Figure 6 (b) is a cross-sectional view of the motor and the gear assembly when the meshing state between the gears is released
7 is a partial detailed view of the motor and gear assembly in the present invention;

The actuator according to the present invention includes a drive motor 41 having a worm gear 42 installed on an output shaft to operate a valve for controlling the flow rate of heating water supplied to each room from a heating boiler, and the worm gear 42 and It relates to an actuator composed of a reduction gear train 50 meshed with the reduction gear train 50 and an output gear 61 meshed with the reduction gear train 50, and will be described in detail with reference to the accompanying drawings.

The actuator according to the present invention is mounted inside the case 11, the cover 12 covering the case 11, the case 11 and the cover 12 as shown in FIGS. 1 to 4 An assembly (hereinafter referred to as 'motor and gear assembly 30') in which the driving motor 41 and the reduction gear train 50 are assembled, and a PCB for providing power and control signals of the driving motor 41 (80) and the like. In addition, a lever 21 that is coupled with the output shaft of the output gear 61 of the motor and gear assembly 30 to transmit power to an electronic device such as a valve and a nut 22 that covers the opening of the case 11 consists of, etc.

When the driving motor 41 is mounted inside the case 11 and the cover 12 by cutting both sides of the outer cover to form a flat surface rather than an arc shape, the driving motor 41 is the driving motor By making the flat surfaces formed on the upper and lower surfaces of 41 come into contact with the case 11 and the cover 12, the problem in which the driving motor 41 flows is improved.

The motor and gear assembly 30 includes a drive motor 41 having a worm gear 42 installed on an output shaft, a reduction gear train 50 meshed with the worm gear 42, and the reduction gear train 50 and It is composed of an output gear 61 to be meshed, and at least one of the gears disposed in the reduction gear train is formed in two stages and has a meshed structure. The plurality of gears are, for example, as shown in FIG. 4 , a first gear 51 meshed with the worm gear 42 and a second gear 52 that is an idle gear meshed with an upper portion of the first gear 51 . ), a third gear 53 that is a reduction gear meshed with the second gear 52, a fourth gear 54 meshed with a lower portion of the third gear 53, and an upper portion of the fourth gear It is composed of a fifth gear 55 meshed with the gear 54 and the lower portion thereof meshed with the output gear 61 .

At least one of the gears (for example, the fourth gear 54) is provided with a gear engagement release unit that enables temporary release of the meshing state between the gears. That is, by adding an emergency manual release function to the addition of a simple structure by the gear engagement release unit installed on the fourth gear, the user can temporarily release the transmission of the driving force of the driving motor through a simple operation in an emergency.

A gear shaft 71 elongated in the vertical direction is inserted and installed in the center of the fourth gear 54 on which the gear engagement release unit is installed. An elastic member 74 such as a coil spring is installed on the gear shaft 71 to restore the position of the fourth gear. A release cap 72 for releasing a meshing state of some of the gears disposed in the reduction gear train 50 is installed at an upper end of the gear shaft 71 , and the release cap 72 is the cover 12 . ) has a structure that is accommodated in a groove formed on the outside and can press the release cap 72 from the outside, and when the release cap 72 is pressed, the meshing state between the gears is temporarily released. The gear shaft 71 is supported inside the groove portion formed in the cover 12 so that the release cap 72 is not excessively pressed when the release cap 72 is pressed, and the release cap 72 is A stopper 12a is formed to block the lowering of the release cap 72 at a specific position so as not to be excessively pressed.

The coupling structure between the gear shaft 71 and the fourth gear 54 will be described with reference to FIG. 5 as follows.

A groove 71a is formed in the gear shaft 71, and a separation preventing member 71b, that is, an e-ring, is formed in order to prevent separation of the fourth gear 54 in which the gear engagement release unit is installed in the groove 71a. (E-Ring) is installed. In the gear shaft 71, a separate guide pipe 73 is inserted and fixed to the gear shaft 71 between the separation preventing member 71b and the inner surface of the cover 12 in which the groove portion is formed. When the fourth gear to which the gear engagement release unit is installed is restored by the restoring force of the elastic member 74, the lower end of the guide pipe 73 abuts against the upper end of the fourth gear so that the fourth gear 54 is excessive. to be prevented from being restored. In addition, the fourth gear 54 has an accommodation space 54a for accommodating the elastic member 74 therein. The accommodating space 54a is sized to the extent that the elastic member 74 can be compressed and stretched smoothly. In addition, the gear shaft 71 forms a step portion 71c that allows the upper end of the accommodation space 54a to be caught when the fourth gear 54 is inserted into the gear shaft 71 to form the gear. The shaft 71 may be formed to have different outer diameters, or in another embodiment, the gear shaft 71 may be formed to have the same outer diameter without the stepped portion 71c. In addition, while the gear shaft 71 is rotationally supported inside the case 11 , the gear shaft 71 moves up and down when the release cap 72 installed on the upper end of the gear shaft 71 is pressed. The shaft housing 11a, which is a space that can be formed, is formed to protrude.

In the reduction gear train, the gear engagement release unit for temporarily releasing the meshing state between the gears is based on the gear shaft 71 inserted and installed in the center of the fourth gear 54, which is the target of disengagement, as a basic configuration, and the release cap (72), the guide pipe (73) and the elastic member (74) and the like.

On the other hand, the process of releasing the meshing state between the gears in the reduction gear train 50 by pressing the release cap 72 exposed to the outside of the cover 12 will be described with reference to FIGS. 6(a) and 6(b). As follows.

6 (a) is a cross-sectional view of the motor and gear assembly 30 in a normal operating state before the meshing state between the gears in the reduction gear train 50 is released, that is, in a normal operating state, the The fourth gear 54, in which the gear engagement release unit is installed, has a lower portion meshed with a lower portion of the third gear 53, and an upper portion thereof is meshed with an upper portion of a fifth gear 55 that meshes with the output gear 61. The driving force of the driving motor 41 is transmitted to the fifth gear 55 by the meshing of a plurality of gears.

6 (b) is a cross-sectional view of the motor and gear assembly 30 in a state in which the meshing state between the gears in the reduction gear train 50 is released when the release cap 72 is pressed, and the release cap When (72) is pressed, the gear shaft 71 is lowered while the lower surface of the release cap 72 is in contact with the upper surface of the stopper 12a to prevent the lower surface, and the guide is inserted and fixed in the gear shaft 71 The lower end of the pipe 73 abuts against the upper end of the fourth gear 54 to lower the fourth gear 54 . When the fourth gear 54 descends, the fourth gear 54 is disengaged from the third gear 53 and the fifth gear 55 , so that the driving force of the driving motor 41 is increased to the fifth gear 53 . It cannot be transmitted to the gear 55 , and thus the emergency release function is activated in the output gear 61 .

As described above, there is an advantage that the transmission of the driving force of the driving motor can be temporarily released by a simple operation of the user pressing the release cap 72 exposed to the outside of the cover 12 in an emergency.

Meanwhile, in the present invention, as shown in FIG. 3 , a guide hole 83 is formed in a specific position of the PCB 80 to be elongated and protrudes at a position corresponding to the guide hole 83 inside the cover 12 . The protrusion piece 12b is penetrated and fixed to the guide hole 83 by forming a piece 12b, and the penetrating protrusion piece 12 connects one end (rear end) of the driving motor 41 to the guide hole 83 . By being pressed, the flow of the driving motor 41, that is, slip can be prevented.

In addition, as shown in Fig. 4, the drive motor 41 outer cover installation position is also formed flat so that the flat surface of the drive motor 41 outer cover can be easily seated inside the case 11, , Protrusions 11c and 11d are respectively formed on both ends of the flat surface formed inside the case 11 so that the outer cover of the drive motor 41 does not flow, and the protrusions 11c and 11d have the drive motor 41 , respectively. A groove capable of accommodating a portion protruding from one end (rear end) of the motor 41 and a groove capable of receiving an output shaft of the other end (front end) of the driving motor 41 are formed.

In addition, the PCB 80 for providing the power and control signals of the driving motor 41 has two protruding terminals 82 for supplying power to the PCB 80 on one side as shown in FIGS. 4 and 7 . The two protrusions are fixedly installed, and the protruding protrusion terminals 82 are inserted into the fixing grooves 41a formed on one side of the flat surface of the driving motor 41 and are fixedly installed while supplying power to the PCB 80 . . In this way, when the PCB 80 is electrically connected to the driving motor 41, there is an advantage in that incomplete fixing of the lead wire connection method can be improved.

In addition, the output gear 61 includes a cam guide 62 for controlling the operation of the output gear 61 at a lower portion thereof, and a pressure to absorb an external shock generated inside the output gear 61 . An elastic member 63 such as a spring, and a pressure cap 64 for accommodating the elastic member 63 and supporting the lower portion thereof are installed. The elastic member 63 installed inside the output gear 61 can absorb shock when the fluid in the valve is abnormally high pressure and prevent damage to the actuator in advance.

In the above, the actuator for operating the valve for controlling the flow rate of heating water supplied to each room from the heating boiler has been described, but the present invention is an electronic device to which the actuator having the above structure as well as the actuator for operating the valve is applied This also applies to inventions related to

In addition, although the above has been described with reference to the preferred embodiment of the present invention, those skilled in the art can variously modify and modify the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be changed.

11: case 11a: shaft housing
11c, 11d: protrusion 12: cover
12a: stopper 12b: protruding piece
21: lever 22: nut
30: motor and gear assembly 41: drive motor
41a: fixing groove 42: worm gear
50: reduction gear train 51: first gear
52: second gear 53: third gear
54: fourth gear 54a: receiving space
55: fifth gear 61: output gear
62: cam guide 63: elastic member
64: pressure cap 71: gear shaft
71a: groove 71b: separation preventing member
71c: step 72: release cap
73: guide pipe 74: elastic member
80: PCB 81: terminal block
82: protruding terminal 83: guide hole

Claims (8)

case; and a cover for covering the case; and a drive motor mounted inside the case and the cover and provided with a worm gear on an output shaft; and a reduction gear train meshing with the worm gear; and an output meshing with the reduction gear train gear; including,
At least one of the gears disposed in the reduction gear train is formed in two stages, and at least one of the gears is provided with a gear engagement release unit for temporarily releasing the meshing state between the gears.
Actuator characterized in that.
According to claim 1,
A gear shaft elongated in the vertical direction is inserted and installed in the center of the gear where the gear engagement release unit is installed
Actuator characterized in that.
3. The method of claim 2,
An elastic member is installed on the gear shaft so that the position of the gear in which the gear engagement release unit is installed can be restored
Actuator characterized in that.
3. The method of claim 2,
At the upper end of the gear shaft,
A release cap for releasing the meshing state of some of the gears disposed in the reduction gear train is installed,
The release cap is accommodated in a groove formed in the cover so that when the release cap is pressed from the outside, the meshing state between the gears is temporarily released
Actuator characterized in that.
According to claim 1,
The drive motor is such that both sides of the outer cover are cut to form a flat surface
Actuator characterized in that.
5. The method of claim 4,
Inside the case,
As the gear shaft is rotationally supported,
When the release cap installed on the upper end of the gear shaft is pressed, the shaft housing, which is a space in which the gear shaft can move up and down, is formed to protrude
Actuator characterized in that.
According to claim 1,
Inside the output gear,
An elastic member installed to absorb external shocks
Actuator characterized in that.
A one comprising the actuator according to any one of claims 1 to 7
An electronic device characterized by

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