KR101166195B1 - Knob apparatus of controller - Google Patents

Abstract

The present invention relates to a knob device of a controller, comprising: an encoder provided on a substrate of a controller, a supporter mounted on the substrate so as to cover the encoder, and a first protruding hollow in the supporter so that one side of the encoder is disposed therein. A boss, a knob rotatably seated on the front of the supporter, and a second boss rotatably inserted in the first boss to protrude hollowly on the rear surface of the knob to be connected to one side of the encoder, The protrusions protrude along the circumference of the inner side of the first boss and the outer side of the second boss, so that the contact areas of the first and second bosses are reduced by the protrusions, so that the knob is rotated. There is an advantage that the friction noise is reduced, and the deterioration of the operation feeling due to the friction is prevented.

Controller, control panel, board, knob device, encoder, knob, knob supporter, first boss, second boss

Description

Knob apparatus of controller

1 is a perspective view of a washing machine equipped with a knob device according to an embodiment of the present invention;

2 is an exploded perspective view of a controller with a knob device according to an embodiment of the present invention;

3 is a cross-sectional view showing a knob device to the control according to an embodiment of the present invention;

Figure 4 is a perspective view of the knob of the knob device according to an embodiment of the present invention,

5 is a perspective view showing a supporter of the knob device according to an embodiment of the present invention;

6 is a configuration diagram showing the main part of the knob device according to an embodiment of the present invention;

7 is an exploded perspective view of a controller with a knob device according to another embodiment of the present invention;

8 is a cross-sectional view showing a knob device to a control according to another embodiment of the present invention;

DESCRIPTION OF THE REFERENCE NUMERALS

7,8: controller 28,29: knob device

30: knob 32: flange

40: encoder 42: main body

44: rotation rod 50, 80: knob supporter

52, 82: sliding seat 54: LED support

56,86: Guide rib 58,88: Clear window

60,90: first boss 62,92: first protrusion

70,100: second boss 72,102: second projection

84: LED display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knob device of a controller, and more particularly, to a knob device of a controller in which shaking of a knob is reduced during operation of the knob device, and noise generation and deterioration of operation feeling due to friction can be minimized.

In general, various machines are equipped with a controller for automatically controlling the operation of the machine to meet the user's desired purpose or purpose.

In the controller as described above, an operation unit to which various commands are input by a user is formed, and a display unit which displays an operating state of the machine to the outside is formed. Thus, the user can directly adjust the operation of the machine through the operation panel or change / set the program of the controller that controls the operation of the machine as appropriate.

In such an operation unit, various switches are installed to be operable so that various commands can be input by a user. The switches include a push switch, a slide switch, a rotary switch, and the like according to an operation method.

Here, a knob device is typical of the rotary switch, and the knob device is connected to a knob knob having a cylindrical shape rotatably disposed at the operation unit, and is connected to a rotational center of the knob to be in accordance with a rotation angle of the knob. It is configured to include an encoder (Encoder) for generating another control signal.

The knob is disposed to protrude from the control panel forming the exterior of the controller, the encoder is mounted on a substrate installed inside the controller and one end is connected to the back of the knob.

On the other hand, since the separation space is formed with a predetermined size between the control panel and the substrate, one end of the encoder is protruded long toward the knob side, the boss is inserted into the center of the back of the knob so that one end of the encoder can be connected to the encoder side It protrudes long.

However, since the knob device of the controller according to the related art has a structure in which one end of the encoder and the boss of the knob are formed long so that the encoder and the knob are very vulnerable to impact, the connection portion of the encoder and the knob is connected to external impact and operation force. There is a problem that is easily broken by.

Therefore, the recent knob device is provided with a support boss for rotatably supporting the boss of the knob to reinforce the connecting portion of the encoder and the knob to solve the above problem.

That is, the support boss is formed in the control panel so that the connection portion of the encoder and the knob is supported by the control panel, or a component in which the support boss is formed on the control panel or the substrate is separately mounted so that the encoder and the encoder The connection part of the knob is supported.

In the knob device of the controller configured as described above, the boss of the knob is rotatably disposed inside the support boss, so that the boss of the knob and the support boss are in surface contact, so that friction noise is generated when the knob is rotated or frictional resistance. As a result, the operation feeling is greatly reduced, and the knob is shaken due to the gap between the boss and the support boss.

That is, when the gap between the boss of the knob and the support boss is largely formed, noise and operation feeling decrease due to friction during rotation of the knob are reduced, but there is a problem that the knob is greatly shaken in the vertical direction.

On the other hand, if the gap between the boss of the knob and the support boss is formed small, the phenomenon that the knob shakes up and down, left and right direction is reduced, but the friction is generated during the rotation of the knob to greatly reduce the friction noise and operation feeling There is a problem that the workability is also increased during assembly of the boss of the knob and the support boss.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a knob device of a controller that can improve the operation feeling of the knob when the knob device is operated, and the friction noise can be reduced.

In addition, another object of the present invention is to provide a knob device of the controller that can prevent the knob from shaking in the vertical, horizontal direction.

Still another object of the present invention is to provide a knob device of a controller that can be easily assembled with the knob and can sufficiently supply lubricant to the boss of the knob.

The knob device of the controller according to an embodiment of the present invention for realizing the above object is such that an encoder installed on a substrate of the controller, a supporter mounted on the substrate to cover the encoder, and one side of the encoder are disposed therein. A first boss protruding hollow on the supporter, a knob rotatably seated on a front surface of the supporter, and a hollow on a rear surface of the knob to be rotatably inserted into the first boss so as to be connected to one side of the encoder It is composed of a second boss protruding, characterized in that the protrusions protrude along the periphery of all or the rear portion on the inner surface of the first boss and the outer surface of the second boss.

An inclined surface is formed on the inner side surface of the first boss and the outer side surface of the second boss so that the inner diameter of the first boss and the outer diameter of the second boss are reduced toward the rear side, and a plurality of protrusions are spaced apart a predetermined distance along the circumference of the inclined surface. Is formed.

The projections are formed on all of the first protrusions protruding from the rear side of the first boss so as to be in contact with and supported on the outer side of the second boss, and all of the outer surfaces of the second boss so as to be in contact with and supported on the inner side of the first boss. It is composed of a second projection formed protruding.

Lubricant is provided between the inner side of the first boss and the outer side of the second boss.

In addition, the knob device of the controller according to another embodiment of the present invention is a control panel for forming the appearance of the controller, an encoder provided on the substrate mounted on the back of the control panel, and the control so that one side of the encoder is disposed therein A first boss projecting to be hollow on the panel, a knob rotatably seated on the front of the control panel, and a hollow on the back of the knob to be rotatably inserted into the first boss and connected to one side of the encoder It is composed of a second boss protruding, characterized in that the protrusions protrude along the periphery of all or the rear portion on the inner surface of the first boss and the outer surface of the second boss.

An inclined surface is formed on the inner side surface of the first boss and the outer side surface of the second boss so that the inner diameter of the first boss and the outer diameter of the second boss are reduced toward the rear side, and a plurality of protrusions are spaced apart a predetermined distance along the circumference of the inclined surface. Is formed.

The projections are provided on all of the first protrusions protruding from the rear side of the first boss so as to be in contact with and supported on the outer side of the second boss, and all of the outer surfaces of the second boss so as to be in contact with and supported on the inner side of the first boss. It is composed of a second projection formed protruding.

Lubricant is provided between the inner side of the first boss and the outer side of the second boss.

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

1 is a perspective view of a washing machine equipped with a knob device according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a controller equipped with a knob device according to an embodiment of the present invention.

Drum washing machine according to an embodiment of the present invention, as shown in Figure 1 or 2, the tub (2) forming the appearance, the tub is installed to be buffered inside the cabinet (2) to accommodate the wash water (Not shown), a drum (3) rotatably installed inside the tub to accommodate laundry, and installed on an inner side of the drum (3) so that laundry can be dropped by gravity at a predetermined height. A plurality of lifters 4 for pumping up the gas, a drive motor (not shown) mounted at the rear of the tub to generate the rotational force of the drum 3, and laundry mounted at the front of the cabinet 2. And a cabinet cover 5 having a laundry entrance to be drawn out, a door 6 rotatably installed at the cabinet cover 5 to open and close the laundry entrance, and mounted on the front upper part of the cabinet 2. Drum washing machine (1) It is configured to include a controller 7 for controlling the operation.

On the other hand, the controller 7 is detachably mounted to the cabinet 2 and the cabinet cover 5, the control panel 10 to form the appearance of the controller 7 and the interior of the control panel 10 It is composed of a substrate 20 which is disposed in and mounted with various components for controlling the operation of the drum washing machine (1).

Here, a plurality of display holes 11, button holes 13, and knob holes 15 are formed in the control panel 10, and the transparent window 12 made of a transparent material is formed in the display hole 11. The button hole 13 is provided with a button 14 so as to be pressed.

In addition, the display member 22 is mounted on the substrate 20 at the position opposite to the transparent window 12, and the tact switch 24 is mounted at the position opposite to the button 14.

The display member 22 is a display component such as an LCD or an LED, and displays the operation state of the drum washing machine 1 to the user through the transparent window 12, and the tact switch 24 is an on-off switch. As the button 14 is pressed, the on / off of the drum washing machine 1 is controlled.

The front of the substrate 20 is equipped with an LED supporter 26 supporting the LED and guiding the light of the LED to the transparent window 12.

On the other hand, the knob device 28 is installed on the substrate 20 facing the knob hole 15, the knob device 28, the encoder 40 is rotated with each other according to the rotationally operated angle of the knob 30 It is a rotary switch for generating various signals to control the operation of the drum washing machine (1).

3 is a cross-sectional view showing a knob device to the control according to an embodiment of the present invention, Figure 4 is a perspective view showing a knob of the knob device according to an embodiment of the present invention, Figure 5 is a view of the present invention 6 is a perspective view illustrating a supporter of a knob device according to an embodiment, and FIG. 6 is a configuration diagram illustrating a main part of the knob device according to an embodiment of the present invention.

3 to 6, the knob device of the controller according to an embodiment of the present invention is disposed to penetrate through the knob hole 15 of the control panel 10 to be rotated by the user knob 30 And an encoder 40 installed at the substrate 20 so that one end thereof is connected to the rear surface of the knob 30 and rotated by the knob 30 to generate various control signals according to a rotation angle, and the encoder ( The knob supporter 50 mounted on the substrate 20 and the knob supporter 40 are disposed inside the knob supporter 50, and the one end of the encoder 40 is disposed therein so that the knob 30 is rotatably seated therein. The first boss 60 protruding in the center of the front surface of the 50 and the first boss 60 is rotatably inserted into the first boss 60 so that one end of the encoder 40 is press-fitted and fixed. The second boss 70 protruding hollow in the center of the back It is configured to hereinafter.

The knob 30 is a cylindrical handle disposed to penetrate the knob hole 15. The knob 30 is disposed to protrude forwardly in front of the control panel 10, and a rear portion rotates in front of the knob supporter 50. Possibly seated.

The rear end of the knob 30 is formed to protrude outward along the circumference of the flange portion 32 to form a smooth seating surface to be more securely seated on the front of the knob supporter 50.

The encoder 40 is connected to the main body 42 such that the main body 42 is mounted to enable transmission of signals to the substrate 20 and one end thereof is press-fitted to the second boss 70 of the knob 30. It consists of a rotation rod 44 rotatably installed.

The knob supporter 50 is a component on which the knob 30 is rotatably seated. The knob supporter 50 is mounted on the substrate 20 such that one end of the rotary rod 44 is inserted through the inside of the first boss 60. It is fixed.

The front surface of the knob supporter 50 is formed in a circular sliding seat 52, the flange seat 32 of the knob 30 is rotatably seated, the outer side of the sliding seat 52 The LED support part 54 which supports the several LED which shows the rotation angle of the encoder 40 is formed circularly.

Here, the inner side of the sliding seat 52 is in contact with the inner surface of the knob 30 to guide the rotation of the knob 30 and to prevent the vertical movement of the knob 30 up and down, left and right. Guide ribs 56 protrude along the perimeter.

In addition, the LED support 54 guides the rotation of the knob 30 similarly to the guide rib 56, and the sliding seat 52 to prevent the knob 30 from moving up, down, left, and right. Protrude stepwise forward around the outer periphery.

The LED support 54 is formed with a plurality of LED holes 54A in which the LEDs are disposed in the circumferential direction. The LED hole 54A supports the LED installed in the substrate 20 so that the LED does not fall and guides the light of the LED in a desired direction.

The front of the LED support 54 as described above is arranged a ring-shaped transparent window 58 is projected the light of the LED.

On the other hand, the first boss 60 is projected to communicate in the forward direction from the front center of the knob supporter 50 so that the rotary rod 44 of the encoder 40 is rotatably disposed therein, the second boss The first boss 60 is rotatably disposed therein and protrudes rearward from the center of the rear surface of the knob 30 such that one end of the rotary rod 44 is press-fitted.

The inner surface of the first boss 60 and the outer surface of the second boss 70 may have the same inclination angle such that the inner diameter of the first boss 60 and the outer diameter of the second boss 70 decrease from the front side to the rear side. It is formed to be inclined.

That is, the inclined surface is formed on the inner surface of the first boss 60 so that the hollow portion extends forward, and the inclined surface is formed on the outer surface of the second boss 70 so that the end of the boss is sharply formed to the rear. Therefore, when assembling the first and second bosses 60 and 70, the second boss 70 is easily inserted into the first boss 60.

On the inclined surfaces of the first boss 60 and the second boss 70 as described above, the knob 30 may be stably supported while the friction between the first boss 60 and the second boss 70 is reduced. In order to be able, the protrusions are formed to protrude along the perimeter of the whole or the rear part.

In the present embodiment, the protrusions 62 and 72 are formed on all of the inner side rear portion of the first boss 60 and the outer side surface of the second boss 70, respectively.

That is, the protrusions include a first protrusion 62 protruding inwardly to the rear side of the inner side of the first boss 60 so as to be in contact with and supported on all of the outer surfaces of the second boss 70, and the first boss 60. And a second protrusion 72 projecting outwardly on all of the outer side surfaces of the second boss so as to be in contact with and supported on all of the inner side surfaces.

The first protrusions 62 are formed to be spaced apart from each other by a predetermined distance along the circumference of the inner side of the first boss 60, and the second protrusions 72 are the outer side of the second boss 70. A plurality of the plurality is formed spaced apart from each other by a predetermined distance.

The first protrusion 62 and the second protrusion 72 as described above are elongated in the axial direction of the first boss 60 and the second boss 70, and the first protrusion 62 and the second protrusion part 72. The protruding end of the 72 is the same angle as the inclined surfaces of the first and second bosses 60 and 70 so as to stably contact the outer surface of the second boss 70 and the inner surface of the first boss 60. The inclined surface is formed.

Therefore, since the first boss 60 and the second boss 70 are in contact with all but the rear part except the middle part by the first and second protrusions 62 and 72, the knob 30 rotates. In operation, the contact area of the first and second bosses 60 and 70 is reduced, thereby reducing the frictional resistance.

In addition, since all of the second boss 70 and the rear part are rotatably supported on all and the rear of the first boss 60, the second boss 70 connected to the rotating rod 44 is the first boss. The boss 60 is installed more stably in a structure in which both ends are supported.

In addition, a lubricant such as grease is provided between the inner surface of the first boss 60 and the outer surface of the second boss 70 so as to reduce friction during operation of the knob 30.

Since the lubricant can be stored in a sufficient amount in the space spaced by the first and second protrusions 62 and 72, the shortage of the lubricant is prevented even if the knob device 28 is used for a long time.

On the other hand, the hollow portion of the second boss 70 and one end of the rotary rod 44 is preferably formed in a cross-sectional shape other than a circular shape so that the rotational force of the knob 30 can be easily transmitted to the encoder 40.

Looking at the assembly and operation of the knob device of the controller according to an embodiment of the present invention configured as described above are as follows.

First, an LED, an LED supporter 26, a tact switch 24, a display member 22, an encoder 40, and the like are mounted on a front surface of the substrate 20, and the LED and the encoder 40 are mounted on a portion thereof. The LED supporter 26 and the knob supporter 50 are mounted.

At this time, the knob supporter 50 is inserted into the LED hole 54A of the LED support portion 54 and at the same time the rotary rod 44 of the encoder 40 in the hollow inside of the first boss 60 It is mounted to the substrate 20 to be inserted.

Accordingly, the LED is not only stably supported by the LED support 54 of the knob supporter 50 but also the light is irradiated in the desired direction.

The knob 30 is rotatably installed on the front surface of the knob supporter 50 as described above, and the flange portion 32 formed at the rear of the knob 30 is provided at the sliding seating portion 52 of the knob supporter 50. ) Is slidably seated, and the second boss 70 of the knob 30 is rotatably inserted into the first boss 60.

At this time, since the inclined surface is formed on the inner surface of the first boss 60 so as to extend the hollow portion forward, and the inclined surface is formed on the outer surface of the second boss 70 to be sharply rearward, the knob 30 When assembling the second boss 70 is simply inserted into the hollow portion of the first boss 60.

As the second boss 70 is inserted into the hollow of the first boss 60, one end of the rotary rod 44 is press-fitted to the hollow of the second boss 70.

On the other hand, a plurality of first and second protrusions 62 and 72 protrude from the inner side of the rear side of the first boss 60 and the outer side of the second boss 70 so as to be spaced apart from each other by a predetermined distance. The first boss 60 and the second boss 70 are contacted and supported only by the first and second bosses 62 and 72 except for the middle part.

When all of the first boss 60 and the second boss 70 are supported by the first and second protrusions 62 and 72 except for the intermediate part, only the whole part and the rear part of the first boss 60 and the second boss 70 are rotated when the knob 30 is rotated. The first and second protrusions 62 and 72 are stably supported to prevent shaking of the knob 30, and the first and second protrusions 62 and 72 are formed of the first boss 60. The area in contact with the inner side and the outer side of the second boss 70 is reduced, so that the frictional resistance is also greatly reduced.

Therefore, by changing the protruding length of the first and second protrusions 62 and 72, the spaced intervals of the first and second bosses 60 and 72 are easily adjusted.

In addition, a space in which lubricant may be stored is sufficiently formed by the protrusions 62 and 72 between the first boss 60 and the second boss 70, and the first boss 60 and the second boss 70 are formed. The feeling of operation of the knob 30 is greatly improved by the lubricant supplied between the bosses 70.

In the control panel 10, the transparent window 12 is installed in the display hole 11 and the button 14 is elastically pressed in the button hole 13, and the display member 22 and the tact switch are installed. The substrate 20 is mounted on the rear surface of the control panel 10 so that the 24 is disposed behind the transparent window 12 and the buttonhole 13, respectively.

In this case, the knob device 28 is inserted into the knob hole 15 formed in the control panel 10 so that the entirety of the knob 30 penetrates, and the transparent window is disposed between the knob 30 and the knob hole 15. 58 is disposed.

7 is an exploded perspective view of a controller provided with a knob device according to another embodiment of the present invention, Figure 8 is a cross-sectional view showing a knob device to the control according to another embodiment of the present invention.

For reference, the same components as those of the exemplary embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 7 or FIG. 8, the knob device of the controller according to another embodiment of the present invention forms the appearance of the controller 8 and the control panel 10 having the substrate 20 mounted on the rear thereof. The knob 30, which is mounted on the knob supporter 80 formed on the front surface of the control panel 10 and rotated by the user, is installed on the substrate 20 so that one end thereof is connected to the rear surface of the knob 30. And the encoder 40 which is rotated by the knob 30 and generates various control signals according to the rotation angle, and one end of the encoder 40 is hollow in the front center of the knob supporter 80 so as to be disposed therein. A protruding first boss 90 and a protruding hollow in the center of the rear surface of the knob 30 so that one end of the encoder 40 is press-fitted and rotatably inserted into the first boss 60. It is configured to include two bosses (100).

The knob 30 is a cylindrical knob rotatably seated on the knob supporter 80, and a rear end portion includes a flange portion forming a smooth seating surface to be more stably seated on the knob supporter 80. 32 is formed to protrude outward along the perimeter.

The encoder 40 is mounted on the main body 42 such that a signal can be transmitted to the substrate 20 and one end thereof is press-fitted to the second boss 100 of the knob 30. It consists of a rotation rod 44 rotatably installed.

The knob supporter 80 is a portion in which the knob 30 is rotatably seated. The encoder 40 is inserted into the first boss 90 so that the rotary rod 44 of the encoder 40 penetrates. It is formed in the control panel 10 at the position opposite to).

The knob supporter 80 is formed to be stepped to a predetermined depth on the front of the control panel 10 so that the rear portion of the knob 30 is inserted, and a sliding seat in which the knob 30 is rotatably seated therein. The portion 82 is formed in a circular shape.

In addition, the guide ribs 86 protrude forward along the circumference to contact the inner surface of the knob 30 on the inner side of the sliding seat 82, and the encoder on the outer side of the sliding seat 82. The LED display unit 84 on which the light of the LED indicating the rotation angle of 40 is projected protrudes forward.

Therefore, the knob 30 is not only guided by the guide rib 86 and the LED display 84, but also prevented from moving up, down, left and right.

In the LED display unit 84 as described above, a plurality of display holes 11 are formed to be spaced apart from each other in a circle at a position opposite to the LEDs installed in the substrate 20, and the transparent windows 88 are formed in the plurality of display holes 11. ) Is placed.

Meanwhile, the first boss 90 protrudes forwardly from the center of the front surface of the knob supporter 80 so that the rotary rod 44 of the encoder 40 is rotatably disposed therein, and the second boss The first boss 90 is rotatably disposed therein and protrudes rearward from the center of the rear surface of the knob 30 such that one end of the encoder 40 is press-fitted.

The inner side surface of the first boss 90 and the outer side surface of the second boss 100 have the same inclination angle such that the inner diameter of the first boss 90 and the outer diameter of the second boss 100 decrease from the front side to the rear side. It is formed to be inclined.

That is, the inclined surface is formed on the inner surface of the first boss 90 so that the hollow portion extends forward, and the inclined surface is formed on the outer surface of the second boss 100 so as to point sharply backward. Therefore, when assembling the first and second bosses 90 and 100, the second boss 100 is easily inserted into the first boss 90.

On the inclined surfaces of the first boss 90 and the second boss 100 as described above, the knob 30 may be stably supported while friction between the first boss 90 and the second boss 100 is reduced. In order to be able, the protrusions are formed to protrude along the perimeter of the whole or the rear part.

That is, the protrusions include a first protrusion 92 protruding inwardly to a rear side of the inner side of the first boss 90 so as to be in contact with and supported on all of the outer surfaces of the second boss 100, and the first boss 90. And a second protrusion 102 protruding outwardly to the entire outer surface of the second boss so as to be in contact with and supported on the entire inner surface of the second boss.

The first protrusion 92 is formed to be spaced apart a predetermined distance along the circumference of the inner surface of the first boss 90, the second protrusion 102 is the outer surface of the second boss 100 A plurality of the plurality is formed spaced apart from each other by a predetermined distance.

The first protrusion 92 and the second protrusion 102 as described above are formed long in the axial direction of the first boss 90 and the second boss 100, the first protrusion 92 and the second protrusion The protruding end of the 102 is the same angle as the inclined surfaces of the first and second bosses 90 and 100 so as to stably contact the outer surface of the second boss 100 and the inner surface of the first boss 90. The inclined surface is formed.

Accordingly, since the first boss 90 and the second boss 100 are in contact with all but the rear part except the middle part by the first and second protrusions 92 and 102, the knob 30 rotates. In operation, the contact areas of the first and second bosses 90 and 100 are reduced to reduce the frictional resistance.

In addition, since the entirety and the rear portion of the second boss 100 are rotatably supported on the entirety and the rear portion of the first boss 90, the second boss 100 connected to the rotating rod 44 is the first boss. Both ends are supported by the boss 90 so as to be installed more stably.

In addition, a lubricant such as grease is provided between the inner surface of the first boss 90 and the outer surface of the second boss 100 so as to reduce friction during operation of the knob 30.

Since the lubricant can be stored in a sufficient amount in the space spaced by the first and second protrusions 92 and 102, the lack of the lubricant is prevented even if the knob device 29 is used for a long time.

Looking at the assembly and operation of the knob device of the controller according to another embodiment of the present invention configured as described above are as follows.

First, an LED, an LED supporter 26, a tact switch 24, a display member 22, an encoder 40, and the like are mounted on the front surface of the substrate 20, and the LED supporter 26 is mounted on a portion where the LED is mounted. Is fitted.

In the control panel 10, the transparent window 12 is installed in the display hole 11, and the button 14 is elastically pressed in the button hole 13.

The substrate 20 is mounted on the rear surface of the control panel 10 as described above, and the display member 22 and the tact switch 24 are disposed behind the transparent window 12 and the buttonhole 13, respectively. The rotary rod 44 of the encoder 40 is inserted into the first boss 90 of the control panel 10.

Further, the knob 30 is rotatably seated on the knob supporter 80 of the control panel 10, and the sliding seat 82 of the knob supporter 80 is formed at the rear of the knob 30. The flange part 32 is slidably seated, and the second boss 100 of the knob 30 is rotatably inserted into the first boss 90.

In this case, an inclined surface is formed in the middle portion of the inner surface of the first boss 90 so that the hollow portion extends forward, and an inclined surface is formed in the middle portion of the outer surface of the second boss 100 so as to point sharply to the rear. When assembling the knob 30, the second boss 100 is simply inserted into the hollow part of the first boss 90.

As described above, as the second boss 100 is inserted into the hollow part of the first boss 90, one end of the rotary rod 44 is press-fitted to the hollow part of the second boss 100.

Meanwhile, a plurality of first and second protrusions 92 and 102 are protruded from the inner side of the rear side of the first boss 90 and the outer side of the second boss 102 so as to be spaced apart from each other by a predetermined distance. The first boss 90 and the second boss 102 are contacted and supported only by the first and second bosses 92 and 102 except for the middle part.

When only the first and second bosses 90 and 102 are contacted and supported by the first and second protrusions 92 and 102 except for the intermediate portion, the first boss 90 and the second boss 102 are rotated when the knob 30 is rotated. The first and second protrusions 92 and 102 are stably supported to prevent shaking of the knob 30, and the first and second protrusions 92 and 102 are formed of the first boss 90. The area in contact with the inner side and the outer side of the second boss 102 is reduced, so that the frictional resistance is also greatly reduced.

Therefore, by changing the protruding length of the first and second protrusions 92 and 102, the spaced apart intervals of the first and second bosses 90 and 102 are easily adjusted.

In addition, a space for storing lubricant is sufficiently formed between the first boss 90 and the second boss 102 by the protrusions 92 and 102, and the first boss 90 and the second boss 102 are formed. The feeling of operation of the knob 30 is greatly improved by the lubricant supplied between the bosses 102.

As described above, the knob device of the controller according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited to the above-described embodiments and drawings, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. Of course it is possible.

In the knob device of the controller according to the present invention configured as described above, the second boss of the knob is rotatably inserted into the first boss of the knob supporter to be connected to one side of the encoder, and the inner side of the first boss and the outer side of the second boss. Since the projections protrude along the periphery of all or the rear portion, the contact areas of the first and second bosses are reduced by the projections, so that the friction noise during the rotation operation of the knob is reduced, and the deterioration of the operation feeling due to the friction is prevented. There is an advantage.

In addition, since the first and second bosses are slidably contacted with all of the protrusions and the rear part, the second bosses are stably supported by the first boss while the contact area of the first and second bosses is reduced. Up and down, left and right shake of the knob is minimized.

In addition, since the separation distance between the first and second bosses is easily changed according to the projected height of the protrusion, there is an advantage that the design and dimension change of the knob device is very simple.

In addition, since the inclined surface is formed on the inner surface of the first boss and the outer surface of the second boss so as to reduce the diameter to the rear, an assembling operation for inserting the second boss into the interior of the first boss is easily performed. There is an advantage that workability is improved when assembling the knob mechanism.

In addition, the contact area of the first and second bosses is reduced by the protrusion, and a space for supplying a sufficient amount of lubricant is secured between the first and second bosses, so that the operation noise is prevented while the noise of the knob is rotated. This greatly improves, and the phenomenon that the lubricant is insufficient during long time use is advantageously prevented.

Claims (8)

An encoder installed on the substrate of the controller; A supporter mounted to the substrate to cover the encoder; A first boss protruding hollow in the supporter so that one side of the encoder is disposed inside; A knob rotatably seated on a front surface of the supporter; A second boss rotatably inserted into the first boss and protruding hollow on the rear surface of the knob to be connected to one side of the encoder, The inner side of the first boss and the outer side of the second boss, the knob device of the controller, characterized in that the projection protrudes along the periphery in all or the rear. The method according to claim 1, An inclined surface is formed on the inner side surface of the first boss and the outer side surface of the second boss so that the inner diameter of the first boss and the outer diameter of the second boss are reduced toward the rear side, and a plurality of protrusions are spaced apart a predetermined distance along the circumference of the inclined surface. Knob device of the controller, characterized in that formed to be. The method according to claim 1 or 2, The projections are formed on all of the first protrusions protruding from the rear side of the first boss so as to be in contact with and supported on the outer side of the second boss, and all of the outer surfaces of the second boss so as to be in contact with and supported on the inner side of the first boss. The knob device of the controller, characterized in that consisting of a second projection formed protruding. The method of claim 3, The knob device of the controller, characterized in that the lubricant is provided between the inner surface of the first boss and the outer surface of the second boss. A control panel forming an appearance of the controller; An encoder installed on a substrate mounted on a rear surface of the control panel; A first boss protruding hollow in the control panel so that one side of the encoder is disposed inside; A knob rotatably seated on a front surface of the control panel; A second boss rotatably inserted into the first boss and protruding hollow on the rear surface of the knob to be connected to one side of the encoder, The inner side of the first boss and the outer side of the second boss, the knob device of the controller, characterized in that the projection protrudes along the periphery in all or the rear portion. The method of claim 5, An inclined surface is formed on the inner side surface of the first boss and the outer side surface of the second boss so that the inner diameter of the first boss and the outer diameter of the second boss are reduced toward the rear side, and a plurality of protrusions are spaced apart a predetermined distance along the circumference of the inclined surface. Knob device of the controller, characterized in that formed to be. The method according to claim 5 or 6, The projections are formed on all of the first protrusions protruding from the rear side of the first boss so as to be in contact with and supported on the outer side of the second boss, and all of the outer surfaces of the second boss so as to be in contact with and supported on the inner side of the first boss. The knob device of the controller, characterized in that consisting of a second projection formed protruding. The method of claim 7, The knob device of the controller, characterized in that the lubricant is provided between the inner surface of the first boss and the outer surface of the second boss.

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