KR20070040611A - 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 on which a first boss mounted on the substrate to cover the encoder and having one side of the encoder disposed therein protrudes in front; A knob that is rotatably seated on a front surface of the supporter and rotatably inserted into the first boss so as to be connected to one side of the encoder, and a knob protruding from the rear surface, and mounted to all of the first bosses and on one side And a bushing having an elastic portion elastically rotatably supporting the second boss, and the knob is elastically rotatably supported by the bushing to prevent the knob from shaking or tilting. have.

Controller, Control Panel, Board, Knob Device, Encoder, Knob, Knob Supporter, First Boss, Second Boss, Bushing

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 an exploded perspective view showing a supporter and a bushing of a knob device according to an embodiment of the present invention;

6 is a perspective view showing the bushing rear surface 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;

<Explanation of symbols on main parts of the drawings>

7,8: controller 28,29: knob device

30: knob 32: flange

34: first boss 40: encoder

42: main body 44: rotary rod

50, 70: knob supporter 52, 72: sliding seat

53, 73: guide rib 54: LED support

56, 76: second boss 58, 78: transparent window

60,80 bushing 62,82 outer diameter

63, 83: incision 64, 84: internal diameter

66,86: connection portion 68,88: elastic portion

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 are 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. Therefore, the user can directly adjust the operation of the machine through the operation unit 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 and the encoder and the knob are very vulnerable to impact, the connection portion of the encoder and the knob is externally impacted and operated. 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 in which the knob shakes up and down and left and right is reduced, but friction is generated when the knob is rotated to decrease friction noise and operation feeling. There is a problem that it is greatly increased, and workability is also lowered when assembling 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.

In addition, another object of the present invention is to provide a knob device of the controller that can be implemented only by a simple structure change prevention of the shaking and friction noise of the knob, the workability can be improved when assembling the knob device.

The knob device of the controller according to an embodiment of the present invention for realizing the above object is a first boss mounted on the substrate so as to cover the encoder and one side of the encoder is disposed therein to cover the encoder A knob protruding from the back of the supporter protruding from the front side thereof, and a second boss rotatably seated on the front side of the supporter and rotatably inserted into the first boss so as to be connected to one side of the encoder; It is characterized in that it comprises a bushing is mounted to all of the one boss and provided with an elastic portion for supporting the second boss to elastically rotatable on one side.

The bushing is characterized in that formed of a material having excellent lubricity and wear resistance.

The bushing may include an outer diameter portion in close contact with the outer surface of the first boss, an inner diameter portion in close contact with the inner surface of the first boss, a connecting portion connecting the outer diameter portion and the inner diameter portion, and an outer surface of the second boss. It is composed of an elastic portion formed inside the inner diameter portion to be in close contact with the elastic.

Here, at least one of the outer diameter portion and the connection portion is provided with an incision cut in the radial direction.

The cutouts are formed to be spaced apart at the same angle in the circumferential direction from the outer diameter portion or the connecting portion.

The elastic part may be an elastic rib protruding inward along an inner circumference of the inner diameter part such that a through hole through which the second boss is press-fitted is formed at the center thereof.

The through-hole of the elastic portion is formed with a slit groove in the radial direction.

The slit grooves are formed to be spaced apart from each other at the same angle along the through hole.

The elastic portion is formed to be inclined rearward toward the through hole from the inner surface of the inner diameter portion.

In addition, the knob device of the controller according to another embodiment of the present invention includes an encoder installed on the substrate of the controller, a control panel in which the first boss is mounted on the rear side and one side of the encoder is disposed therein protrudes in front A knob that is rotatably seated on a front surface of the control panel and rotatably inserted into the first boss so as to be connected to one side of the encoder, and a knob protruding from a rear surface of the first boss; And a bushing having an elastic portion elastically rotatably supporting the second boss on one side, wherein the bushing has an outer diameter portion in close contact with an outer surface of the first boss and an inner portion of the first boss. An inner diameter portion in close contact with a side surface, a connecting portion connecting the outer diameter portion and an inner diameter portion, and an inner diameter portion inside the inner diameter portion so as to be elastically in close contact with an outer surface of the second boss. It is characterized by consisting of the formed elastic portion.

At least one of the outer diameter portion and the connection portion is provided with a cut out portion in the radial direction.

The elastic part may be an elastic rib projecting inward along an inner circumference of the inner diameter part such that a through hole through which the second boss is press-fitted is formed at the center thereof.

Hereinafter, exemplary 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 a position opposite to the transparent window 12, and a tact switch 24 is mounted at a 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 an exploded perspective view illustrating a supporter and a bushing of a knob device according to an embodiment, and FIG. 6 is a perspective view illustrating a bushing rear surface 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, the encoder 40 is installed on the substrate 20 so that one end is connected to the back of the knob 30 and rotated by the knob 30 to generate various control signals according to the rotation angle, and the encoder 40 is disposed therein and includes a knob supporter 50 mounted to the substrate 20 such that the knob 30 is rotatably seated.

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.

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

In addition, the second boss 34 protrudes to the rear in the center of the rear surface of the knob 30 so that one end of the encoder 40 is press-fitted and fixed.

The encoder 40 is mounted on 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 34 of the knob 30. It consists of a rotation rod 44 rotatably installed.

The hollow part of the second boss 34 as described above and one end of the rotary rod 44 may be 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.

The knob supporter 50 is a part in which the knob 30 is rotatably seated, and a sliding seat 52 in which the flange part 32 of the knob 30 is rotatably seated is formed in a circular shape on the front surface. On the outside of the sliding seat 52, an LED support 54 for supporting a plurality of LEDs indicating the rotation angle of the encoder 40 is formed in a circular shape.

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 53 protrude along the perimeter.

In addition, one end of the encoder 40 is inserted into the center of the sliding seat 52 and the first boss 56 protrudes forwardly so as to be inserted into the second boss 34. .

The first boss 56 is formed to a larger diameter than the second boss 34 so that the second boss 34 is easily inserted therein.

In addition, the LED support part 54 guides the rotation of the knob 30 similarly to the guide rib 53, and prevents the vertical movement of the knob 30 up and down, left and right, and the sliding seat 52. Protrude stepwise forward around the outer periphery.

In the LED support unit 54, a plurality of LED holes 54A in which the LEDs are disposed are spaced apart in the circumferential direction. The LED hole 54A supports the LED installed in the substrate 20 not to fall and guides the light of the LED in a desired direction.

The front of the LED support 54 is a ring-shaped transparent window 58 is projected to project the light of the LED is disposed.

Meanwhile, all of the first bosses 56 are mounted with a bushing 60 for rotatably supporting the second boss 34 and elastically supporting the second boss 34.

The bushing 60 is a member formed of a material having excellent lubricity and wear resistance, and has a circular cap having a hole formed at the center thereof so that the second boss 34 is penetrated and fitted to all ends of the first boss 56. It is formed into a structure.

That is, the bushing 60 has an outer diameter portion 62 in close contact with the entire outer surface of the first boss 56, an inner diameter portion 64 in close contact with all the inner surfaces of the first boss 56, and A connecting portion 66 connecting the outer diameter portion 62 and the inner diameter portion 64 and an elastic portion formed inside the inner diameter portion 64 so as to be elastically in close contact with the outer surface of the second boss 34. 68).

Here, the outer diameter portion 62 and the inner diameter portion 64 are formed to be spaced apart at intervals smaller than the thickness of the first boss 56 so that the end of the first boss 56 can be pressed.

At a predetermined angle, the first boss 56 is easily pressed between the outer diameter portion 62 and the inner diameter portion 64 on the rear inner surface of the outer diameter portion 62 or the rear outer surface of the inner diameter portion 64. Inclined surfaces 62A and 64A are formed.

In addition, at least one of the outer diameter portion 62 and the connection portion 66 has a cutout 63 for compensating for the dimensional error of the first boss 56 and the bushing 60 when the bushing 60 is mounted. Is formed.

Hereinafter, the present invention will be described by limiting the cutout portion 63 to the outer diameter portion 62 and the connection portion 66 in a continuous manner.

The cutout portion 63 is a slit having a shape that is long cut in a radial direction, so that the bushing 60 is stably mounted on the first boss 56 so as to be circumferentially opened or closed in mounting the bushing 60. Compensation for the dimensional error of the first boss 56 and the bushing 60 while being made.

The cutout 63 as described above is formed in the outer diameter portion 62 and the connecting portion 66 to be spaced apart in the circumferential direction.

In addition, the elastic portion 68 is an elastic rib protruding inward along the inner circumference of the inner diameter portion 64 such that a through hole 68A through which the second boss 34 is press-fitted is formed at the center thereof.

The through hole 68A is formed to be smaller than the outer diameter of the second boss 34 so that the second boss 34 can be press-fitted.

Such an elastic portion 68 is formed to be inclined rearward toward the through-hole 68A from the inner surface of the inner diameter portion 64.

That is, the elastic portion 68 is formed in a funnel structure, the outer end is integrally connected around the inner surface of the inner diameter portion 64, the inner end forming the through hole 68A is at the outer end. Compared to the rear.

A plurality of slit grooves 68B are formed at the inner end of the elastic portion 68 along the circumference of the through hole 68A so that the through hole 68A is elastically opened when the second boss 34 is inserted. It is formed spaced at an angle.

Such a slit groove 68B is elongated in the radial direction at the inner end of the elastic portion 68.

On the other hand, the material of the bushing 60 is a polyacetal resin (POM, Polyoxymethylene) is typically used.

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.

The knob supporter 50 is inserted such that the LED is inserted into the LED hole 54A of the LED support 54 and at the same time the rotary rod 44 of the encoder 40 is inserted into the hollow of the first boss 56. It is mounted on the substrate 20.

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.

Bushing 60 is press-fit to the end of the first boss 56 of the knob supporter 50 as described above.

That is, the first boss 56 is press-fitted between the outer diameter portion 62 and the inner diameter portion 64 of the bushing 60 so that the outer diameter portion 62 is in close contact with the outer surface of the first boss 56. The inner diameter portion 64 is in close contact with the inner side surface of the first boss 56.

If there is a dimensional error between the bushing 60 and the first boss 56 when the bushing 60 is mounted to the first boss 56, the cutout 63 of the bushing 60 is circumferentially directed. The gap between the first boss 56 and the bushing 60 is compensated for while being opened or retracted.

Therefore, since the bushing 60 and the first boss 56 do not need to be manufactured very precisely, the bushing 60 and the knob supporter 50 are easily manufactured, and the bushing 60 is the first one. Since it is simply attached to the boss 56, workability is improved when the knob device 28 is assembled.

The knob 30 is rotatably seated on the front surface of the knob supporter 50, and the flange portion 32 of the knob 30 is slidably seated on the sliding seat 52 of the knob supporter 50. The second boss 34 of the knob 30 is inserted into the through hole 68A formed in the elastic part 68 of the bushing 60 to be rotatable inside the first boss 56. Is placed.

In this case, since the through hole 68A is formed to have a smaller diameter than the second boss 34, the rear end of the second boss 34 is inserted into the through hole 68A, and thus the inner end of the elastic part 68. Is elastically deformed to open about the slit groove 68B formed in the through hole 68A, and the inner end of the elastic portion 68 is elastically in close contact with the outer surface of the second boss 34.

In particular, since the inner diameter of the first boss 56 is larger than the outer diameter of the second boss 34, the second boss 34 is formed in the hollow part of the first boss 56 when the knob 30 is assembled. ) Is easily inserted, and no friction occurs between the first boss 56 and the second boss 34 during the rotation operation of the knob 30.

As described above, as the second boss 34 is inserted into the hollow portion of the first boss 56, one end of the rotary rod 44 is press-fitted to the hollow portion of the second boss 34.

On the other hand, since the outer surface of the second boss 34 is elastically in close contact with the inner end of the elastic portion 68, the second boss 34 is rotatably supported by the bushing (60). Instead, the second boss 34 is elastically supported in place.

Therefore, since the knob 30 is elastically supported by the bushing 60, the phenomenon in which the knob 30 is inclined downward by the load during assembly of the knob device 28 is prevented, and the knob device is prevented. Even when the knob 30 is moved up, down, left and right by operation force or external force during the operation of the 28, the flow of the knob 30 is absorbed by the bushing 60 and then returns to the correct position.

In addition, when only the inner end of the bushing 60 is in contact with the entire outer surface of the second boss 34 and the bushing 60 is formed of a material having excellent lubrication performance, the knob 30 may be rotated. Friction action is significantly reduced between the knob 30 and the knob supporter 50 to prevent noise and deterioration of operation feeling due to friction.

Since the knob 30 is elastically supported by the bushing 60 as described above, even if the gap between the first boss 56 and the second boss 34 is wide, the top, bottom, left and right of the knob 30 are formed. Shake is prevented to improve operation.

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 seated on the knob supporter 70 formed on the front of the control panel 10 and rotated by the user, is disposed to penetrate the control panel 10 and is disposed on the rear surface of the knob 30. It is configured to include an encoder 40 is installed on the substrate 20 so that one end is connected and generates various control signals according to the angle rotated by the knob 30.

The knob 30 is a cylindrical handle rotatably seated on the knob supporter 70, and at the rear end, a flange portion which forms a smooth seating surface to be more stably seated on the knob supporter 70. 32 is formed to protrude outward along the circumference, and the second boss 34 protrudes to the rear so that one end of the encoder 40 is press-fitted to the center of the rear surface of the knob 30.

The encoder 40 is mounted on 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 34 of the knob 30. It consists of a rotation rod 44 rotatably installed.

The knob supporter 70 is a portion in which the knob 30 is rotatably seated, and a sliding seat portion 72 in which the flange portion 32 of the knob 30 is rotatably seated is formed on the front surface thereof. On the outer side of the sliding seat 72, the LED display portion 74 is formed in a circular shape projecting the light of the LED indicating the rotation angle of the encoder 40.

Here, the guide ribs 73 protrude forward along the circumference so as to contact the inner surface of the knob 30 on the inner side of the sliding seat portion 72, and the encoder (on the outer side of the sliding seat portion 72). The LED display unit 74 on which the light of the LED indicating the rotation angle of 40 is projected protrudes forward.

Accordingly, the knob 30 is not only guided by the guide ribs 73 and the LED display 74, but also prevents the vertical movement of the knob 30.

In the LED display unit 74 as described above, a plurality of display holes 11 are formed to be spaced apart from each other at a position opposite to the LEDs installed in the substrate 20, and the transparent windows 78 are formed in the plurality of display holes 11. ) Is placed.

In addition, one end of the encoder 40 is inserted into the center of the sliding seat 72 and the first boss 76 protrudes forwardly to be hollow so that the second boss 34 is inserted therein. .

The first boss 76 is formed with a larger diameter than the second boss 34 so that the second boss 34 is easily inserted therein.

On the other hand, all of the first boss 76 is mounted with a bushing 80 for rotatably supporting the second boss 34 and elastically supporting the second boss 34.

The bushing 80 is a member formed of a material having excellent lubricity and abrasion resistance, and includes an outer diameter portion 82 which is in close contact with an entire outer surface of the first boss 76 and an inner inner surface of the first boss 76. The inner diameter portion 84 that is in close contact, the connection portion 86 connecting the outer diameter portion 82 and the inner diameter portion 84, and the inner diameter portion (20) to be elastically in close contact with the outer surface of the second boss 34. 84 is composed of an elastic portion 88 formed inside.

Here, the outer diameter portion 82 and the inner diameter portion 84 are formed to be spaced apart at intervals smaller than the thickness of the first boss 76 so that the end of the first boss 76 can be pressed.

At a predetermined angle so that the first boss 76 is easily pressed between the outer diameter portion 82 and the inner diameter portion 84 on the rear inner surface of the outer diameter portion 82 or the rear outer surface of the inner diameter portion 84. Inclined surfaces 82A and 84A are formed.

In addition, at least one of the outer diameter portion 82 and the connection portion 86 has a cutout portion 83 for compensating for the dimensional error of the first boss 76 and the bushing 80 when the bushing 80 is mounted. Is formed.

The cut portion 83 is a slit having a shape that is long cut in the radial direction, and a plurality of the cut portions 83 are formed to be spaced apart in the circumferential direction from the outer diameter portion 82 and the connecting portion 86.

In addition, the elastic portion 88 is an elastic rib protruding inward along the inner circumference of the inner diameter portion 84 so that the through hole 88A into which the second boss 34 is press-fitted is formed at the center thereof.

The through hole 88A is formed to be smaller than the outer diameter of the second boss 34 so that the second boss 34 can be press-fitted.

Such an elastic portion 88 is formed to be inclined rearward toward the through-hole 88A from the inner surface of the inner diameter portion 84.

That is, the elastic part 88 is formed in a funnel structure, the outer end is integrally connected around the inner surface of the inner diameter portion 84, the inner end forming the through-hole 88A is at the outer end. Compared to the rear.

A plurality of slit grooves 88B are formed at the inner end of the elastic part 88 along the circumference of the through hole 88A such that the through hole 88A is elastically opened when the second boss 34 is inserted. It is formed spaced at an angle.

Such a slit groove 88B is formed long in the radial direction at the inner end of the elastic portion 88.

Meanwhile, polyacetal resin (POM, Polyoxymethylene) is typically used as the material of the bushing 80.

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, and the display member 22 and the tact switch 24 are disposed at the rear of the transparent window 12 and the buttonhole 13, respectively. The rotary rod 44 of the encoder 40 is inserted into the first boss 76 of the control panel 10.

Bushing 80 is press-fit to the end of the first boss 76 of the knob supporter 70 as described above.

That is, the first boss 76 is pressed between the outer diameter portion 82 and the inner diameter portion 84 of the bushing 80 such that the outer diameter portion 82 is in close contact with the outer surface of the first boss 76. The inner diameter portion 84 is in close contact with the inner side surface of the first boss 76.

If there is a dimensional error between the bushing 80 and the first boss 76 when the bushing 80 is mounted to the first boss 76, the cutout 83 of the bushing 80 is circumferentially directed. The gap between the first boss 76 and the bushing 80 is compensated for while being squeezed or retracted.

Thus, since the bushing 80 and the first boss 76 do not need to be manufactured very precisely, the bushing 8 and the knob supporter 70 can be easily manufactured, and the bushing 80 is the first one. Since it is simply mounted on the boss 76, the workability is improved when the knob device 29 is assembled.

The knob 30 is rotatably seated on the front surface of the knob supporter 70, and the flange portion 32 of the knob 30 is slidably seated on the sliding seat 72 of the knob supporter 70. The second boss 34 of the knob 30 is inserted into the through hole 88A formed in the elastic part 88 of the bushing 80 to be rotatable inside the first boss 76. Is placed.

In this case, since the through hole 88A is formed to have a diameter smaller than that of the second boss 34, the rear end of the second boss 34 is inserted into the through hole 88A so that an inner end of the elastic part 88 is provided. Is elastically deformed to be opened around the slit groove 88B formed in the through hole 88A, and the inner end of the elastic portion 88 is elastically in close contact with the outer surface of the second boss 34.

As described above, as the second boss 34 is inserted into the hollow of the first boss 76, one end of the rotary rod 44 is press-fitted to the hollow of the second boss 34.

On the other hand, since the outer surface of the second boss 34 is elastically in close contact with the inner end of the elastic portion 88, the second boss 34 is rotatably supported by the bushing (80). Instead, the second boss 34 is elastically supported in place.

In addition, when only the inner end of the bushing 80 is in contact with the entire outer surface of the second boss 34 and the bushing 80 is formed of a material having excellent lubrication performance, the knob 30 may be rotated. Friction action is significantly reduced between the knob 30 and the knob supporter 70 to prevent noise and deterioration of operation feeling due to friction.

Since the knob 30 is elastically supported by the bushing 80 as described above, even if the gap between the first boss 76 and the second boss 34 is wide, the top, bottom, left and right of the knob 30 are formed. Shake is prevented to improve operation.

As described above, the knob device of the controller according to the present invention has been described with reference to the illustrated drawings. Of course it is possible.

Since the knob device of the controller according to the present invention configured as described above has a bushing mounted to the second boss of the knob supporter so as to support the second boss of the knob rotatably and elastically, the knob is burnt by the bushing. Sexually rotatable is supported to prevent the knob from shaking or tilting.

In addition, since the bushing is formed of a material having excellent abrasion resistance and lubricity, the knob is smoothly slid and rotated by the bushing when the knob device is operated to improve the feeling of operation, and the bushing increases durability of the knob device, thereby enabling long-term use. There is this.

In addition, since the knob is elastically supported by the inner end of the elastic portion of the bushing even if the gap between the first and second bosses is large, the shock is absorbed by the elastic portion even when the impact and external force are applied to the knob in the vertical, horizontal direction. After returning to the home position, the contact area of the first and second bosses is reduced, so that noise generated due to friction and operation deterioration of the knob device are prevented.

In addition, the outer diameter portion and the connecting portion of the bushing is formed in the radially incision is cut, the mounting of the bushing is compensated for the dimensional error of the bushing and the first boss by the incision when the bushing is easily mounted, The bushing and the first boss do not need to be manufactured precisely, so the knob device is simply manufactured.

In addition, the shaking and frictional noise of the knob is reduced, and there is an advantage that is simply implemented by a simple structural change to mount the bushings to the entire first boss to improve the operation feeling of the knob.

Claims (12)

An encoder installed on the substrate of the controller; A supporter mounted on the substrate so as to cover the encoder and having a first boss protruding in a front surface thereof, the first boss having one side of the encoder disposed therein; A knob which is rotatably seated on a front surface of the supporter and a second boss protruding from the rear of the second boss is rotatably inserted into the first boss so as to be connected to one side of the encoder; And a bushing having an elastic part mounted on all of the first bosses and having an elastic part rotatably supporting the second boss on one side thereof. The method according to claim 1, The bushing is a knob device of the controller, characterized in that formed of a material having excellent lubricity and wear resistance. The method according to claim 1 or 2, The bushing includes an outer diameter portion in close contact with the outer surface of the first boss, an inner diameter portion in close contact with the inner surface of the first boss, a connection portion connecting the outer diameter portion and the inner diameter portion, and an outer surface of the second boss. The knob device of the controller, characterized in that consisting of an elastic portion formed inside the inner diameter portion to be in close contact with the elastic. The method according to claim 3, At least one of the outer diameter portion and the connecting portion of the knob device of the controller, characterized in that provided with a cut in the radial direction. The method according to claim 4, The cut portion is a knob device of the controller, characterized in that formed in the outer diameter portion or the connecting portion spaced apart at the same angle in a plurality of circumferential direction. The method according to claim 3, And the elastic part is an elastic rib protruding inwardly along an inner circumference of the inner diameter portion such that a through hole through which the second boss is press-fitted is formed at the center thereof. The method according to claim 6, Knob device of the controller, characterized in that the through-hole of the elastic portion is formed with a slit groove in the radial direction. The method according to claim 7, The slit groove is a knob device of the controller, characterized in that formed in the plurality of spaced apart at the same angle along the through hole. The method according to claim 8, The controller of claim 2, wherein the elastic part is formed to be inclined rearward from the inner side of the inner diameter part toward the through hole. An encoder installed on the substrate of the controller; A control panel on which the substrate is mounted on a rear surface and a first boss on which one side of the encoder is disposed protrudes in front; A knob which is rotatably seated on a front surface of the control panel and protrudes on a rear surface of a second boss rotatably inserted into the first boss so as to be connected to one side of the encoder; It is configured to include a bushing is mounted to all of the first boss and having an elastic portion on one side to support the second boss to be elastically rotatable, The bushing may include an outer diameter portion in close contact with the outer surface of the first boss, an inner diameter portion in close contact with the inner surface of the first boss, a connecting portion connecting the outer diameter portion and the inner diameter portion, and an outer surface of the second boss. The knob device of the controller, characterized in that consisting of an elastic portion formed inside the inner diameter portion to be in close contact with the elastic. The method according to claim 10, At least one of the outer diameter portion and the connecting portion of the knob device of the controller, characterized in that provided with a cut in the radial direction. The method according to claim 10, And the elastic part is an elastic rib protruding inwardly along an inner circumference of the inner diameter portion such that a through hole through which the second boss is press-fitted is formed at the center thereof.

Images