KR100388275B1 - Mounting device of knob for cleaning machine - Google Patents

Abstract

The present invention relates to a mounting structure of the operating knob of the washing machine. The mounting structure of the present invention, the operating knob mounting structure of the washing machine, the front panel is formed with a switch coupling hole; A casing installed on the rear surface of the front panel and provided with a rotary switch; An operation knob connected to the rotary switch through the switch coupling hole; And an LED module including a body part surrounding the outside of the rotary switch and a drain part extending downwardly from the body part and having a drain groove. The LED module, when the operation knob is pressed over a predetermined interval, at least one side is in contact with one side of the operation knob, to prevent excessively pressed. The upper surface of the LED module is provided with a light emitting part that emits light when an electric current is applied, so that it is possible to provide partial lighting such as to confirm the position of the washing machine and the operation knob even in a dark place.

Description

Mounting structure of washing machine operation knob {Mounting device of knob for cleaning machine}

The present invention relates to a mounting structure of an operating knob of a washing machine, and more particularly, to a structure for mounting an operating knob for operating a rotary switch mounted on a front panel of a washing machine.

1 is a perspective view of a general washing machine. As shown, the top cover 6 is provided on the upper surface of the outer casing 4 in which the washing tank 2 is located. And the front panel 10 is provided with a constant inclination on the rear side of the top cover (6). The front panel 10 is a part for inputting a washing function desired by a user when performing washing in a washing machine or for displaying a washing process performed according to the input to the user.

Next, the configuration of the rear surface of the front panel 10 will be described with reference to FIG. 2. As shown in the drawing, the rear surface of the front panel 10 is provided with a controller operation unit 20 incorporating a PCB substrate 26 and a controller load unit 30 including electrical components for driving. do.

The controller operation unit 20 is provided with a PCB substrate 26 for driving a washing machine. Various electrical components and a display unit 22 and a rotary switch 24 are installed on the PCB substrate 26. The display unit 22 displays a driving state of the washing machine, and the rotary switch 24 is used to move or move the contents displayed on the display unit 22 with a cursor to select a selected function. to be.

The information displayed on the display unit 22 is configured to be recognized by the user through the display window 12 of the front panel 10. The rotary switch 24 is connected to a knob (not shown) coupled through the switch coupling hole 14 of the front panel 10. Therefore, the user operates the rotary switch 24 substantially by rotating the operation knob.

3 shows a connection relationship between the rotary switch 24 and its surroundings. As shown, the rotary switch 24 is connected to the operation knob 40. And the operation knob 40, as described above is coupled to the rotary switch 24 through the switch coupling hole 14 formed in the front panel 10. The rotary switch 24 is electrically connected to the PCB substrate 26, and the PCB substrate 26 is installed inside the casing 21 of the controller operator 20, as described above.

The operation knob 40 includes a circular body portion 42 and a connection portion 44 extending downward from the central portion of the rear surface of the body portion 42 and connected to the rotary switch 24. The rear end 42a of the body portion 42 is provided to be spaced apart from the front panel 10 by a predetermined interval. Reference numeral 16 denotes a control panel in which a film on which the various printed phrases required by the front panel 10 are printed is inserted and ejected.

Looking at the assembly process of the rotary switch peripheral relationship of the structure as described above, first, on the PCB case 21, the PCB substrate 26 is fixed. Here, various electrical components such as the display unit 22, the rotary switch 24, and a power switch are mounted on the PCB 26.

When the PCB substrate 26 is fixed in this way, in order to secure the waterproof performance, the urethane coating layer 27 is formed by performing a urethane coating. Then, this partial assembly is installed on the top cover 6 of the outer casing 4 of the washing machine, and then the front panel 10 is assembled to the upper part. In the state where the front panel 10 is assembled, the assembly of the above-described parts will be completed by inserting the operation knob 40 into the rotary switch 24 and connecting them to each other.

However, according to such a conventional technique, the following disadvantages are pointed out.

According to the related art, since the operation knob 40 is connected to the rotary switch 24 only by the connecting portion 44, the operation knob 40 may easily be separated from the top in the drawing. Therefore, when the user is used for a long time, the rotary switch 24 and the operation knob 40 are arbitrarily disassembled, thereby causing the separation of the operation knob 40.

In addition, since the rear end 42a of the body portion 42 of the manipulation knob 40 is assembled in a state close to the front panel 10, an external force applied to the manipulation knob 40 is directly applied to the front panel 10. Will be delivered. Therefore, it is pointed out that the front panel 10 may be damaged by an external force applied to the operation knob 40 protruding from the front panel 10.

And there is a slight gap between the rear end 42a of the operation knob 40 and the front panel 10, through which the water penetrates inside, foreign matter such as detergent powder, rotary switch 24 There is a risk of penetrating into the inner side where is installed. If foreign matter such as detergent powder or water penetrates into the inside of the rotary switch 24, the internal electrical components may be damaged, which may cause a serious problem on the reliability of the product. .

The present invention is to solve the problems described above, an object of the present invention is to provide a structure that can prevent the penetration of water or foreign matter into the controller portion of the washing machine through the operation knob portion.

Another object of the present invention is to provide a structure in which the operation knob installed on the front panel of the washing machine is not dismantled arbitrarily and can maintain a solid support state.

1 is a perspective view of a typical washing machine.

2 is an exploded perspective view showing the configuration of a general control unit of the washing machine.

3 is a cross-sectional view showing the configuration of a conventional operation knob.

Figure 4 is a cross-sectional view showing the configuration of the operation knob according to the present invention.

Figure 5 is a perspective view of the LED module portion according to the present invention.

6 is a front view of the LED module according to the present invention.

Explanation of symbols on the main parts of the drawings

50 ..... Operation knob 54 ..... Body

54a ..... Rear extension 54b ..... Outsourcing extension

70 ..... Front panel 72 ..... Switch mounting hole

74 ..... Inner extension 80 ..... Rotary switch

90 ..... LED Module

Operation knob mounting structure of the washing machine according to the present invention for achieving the above object, the switch panel is formed with a front panel; A casing installed on the rear surface of the front panel and provided with a rotary switch; An operation knob connected to the rotary switch through the switch coupling hole; And an LED module configured to include a body part surrounding the outer side of the rotary switch, and a molded part extending downward from the body part and having a drain part having a drain groove.

And since the LED module is provided at regular intervals from the operation knob, when the operation knob is pressed for a predetermined interval or more, at least one side is in contact with one side of the operation knob. Therefore, it is possible to prevent the operation knob from being pressed excessively, and it is possible to prevent damage to the peripheral parts by the operation knob as much as possible.

According to an embodiment of the present invention, the upper side of the LED module, the light emitting unit for emitting light by applying the current, it is possible to provide a partial light, such as to determine the location of the washing machine and the operation knob in the dark. It is configured to be.

According to another embodiment of the present invention, the rear end of the operation knob extends radially from the rear surface of the front panel in a state of passing through the switch coupling hole, so that the operation knob does not fall out in front of the front panel. Therefore, even if it is used for a long time, it is possible to alleviate the inconvenience that the operation knob is detached arbitrarily.

And a rear end of the operation knob includes a rear end extension extending radially from the rear end of the operation knob and a rear end peripheral edge extended upward from the rear end extension; The inner circumference of the switch coupling hole is formed to extend downward from the inner side of the rear outer circumference. According to this structure, it will be possible to prevent the penetration of water or foreign matter between the operation knob and the front panel as much as possible.

The rotary switch and the LED module are installed on a PCB board installed inside the casing, and a urethane coating layer is formed on the PCB board so that a part of the rotary switch and the LED module is buried. By this urethane coating layer, it will be possible to more surely ensure the waterproofing of the PCB substrate and the peripheral parts connected thereto.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

4 shows the structure according to the present invention in a sectional view. As shown, according to the present invention, the operation knob 50 is composed of a body portion 54 that the user grips during operation, and a connecting portion 52 extending to the rear surface of the body portion 54. The rear ends 54a and 54b of the body portion 54 of the passage knob 50 are located on the rear surface of the front panel 70. The rear end portions 54a and 54b of the body portion 54 are located on the rear surface of the front panel 70 so that the operation knob 50 can be prevented from actually moving forward of the front panel 70. do.

Looking at the configuration of the body portion 54 of the operation knob 50 in more detail, the rear end portion extending radially extending back from the outer periphery of the rear end portion 54a and the rear end extension portion 54a It consists of a rear end outer periphery 54b. By the rear end extension 54a and the rear end outer periphery 54b, the outer circumferential portion of the rear end of the body portion 54 actually forms an overall circular groove shape opened to the upper surface (front panel side).

The groove portion formed by the rear end extension 54a and the rear end outer periphery 54b is formed by bending the inner circumferential portion of the switch coupling hole 72 formed in the front panel 70 downward. The inner peripheral extension portion 74 is assembled.

In summary, the rear end portions 54a and 54b of the body portion 54 of the operation knob 50 are located on the rear surface of the front panel 70. In addition, since the rear end portions 54a and 54b extend radially from at least the switch engagement hole 72 of the front panel 70, the operation knob 54 can be prevented from escaping toward the front panel 70 side. .

Here, among the rear end portions 54a and 54b, the rear end extension portion 54a extends radially from the rear surface of the front panel 70 to substantially prevent the operation knob 50 from escaping to the front surface. You can see that it performs the function. In addition, the rear end outer periphery 54b of the rear ends 54a and 54b assists the function of preventing the operation knob 50 from escaping to the front side as described above, and at the same time, the inner peripheral edge of the front panel 70. It can be seen that it is configured to be combined with the book 74 is to act to prevent the maximum penetration of water or foreign matter into the interior.

And the connection portion 52 of the operation knob 50 is configured to be connected to the rotary switch 80 as in the prior art, it is possible to operate the rotary switch 80 by the rotation operation of the operation knob 50. In addition, a control plate on which a predetermined print is printed is attached to the front surface of the front panel 70 in the same manner as the conventional configuration.

Next, the configuration of the rear surface of the operation knob 50 as described above will be described. The rotary switch 80 is connected to the PCB board 84 inside the casing 81 of the controller operation unit (see FIG. 2). The rotary switch 80 is a switch configured to move a cursor with respect to the content displayed on the display unit by rotating it, and to press the button to perform a selected function.

In the casing 81, a urethane coating layer 82 is formed on the upper and lower portions of the PCB substrate 84 to prevent the penetration of moisture. Therefore, the electrical connection between the PCB board 84 and the rotary switch 80 may be sufficiently waterproof by the urethane coating layer 82.

According to the present invention, the LED module 90 is installed outside the rotary switch 80. The LED module 90 is also installed on the PCB board 84 and electrically connected as described above. Referring to FIG. 4 to FIG. 6, the LED module 90 installed to surround the rotary switch 80 has a body portion 92 formed with a circular groove for centering the rotary switch 80. And a drain portion 96 connected to the lower end of the body portion 92 and having a drain groove 96a.

As shown in FIG. 4, the body portion 92 is substantially installed on the lower surface of the operation knob 50, and the PCB substrate 84 may be generated by excessively pushing the operation knob 50. ) To prevent damage and the like. That is, when the operation knob 50 for operating the rotary switch 80 is pressed downward over the set interval, one lower end portion of the operation knob 50 is in contact with at least one side of the body portion 92, the operation knob It will prevent 50 from falling anymore.

And the upper surface of the body portion 92 is provided with a circular light emitting portion 94. The light emitting unit 94 is a part that is configured to emit light by the application of a power source is built in the LED. As shown in FIG. 6, when power is supplied by the power connection pin 94a, the light emitting unit 94 emits light.

The light emitting unit 94 may provide a function of informing a position of the operation knob 50 in a dark place or providing a predetermined amount of illumination, and may provide aesthetic benefits such as light emission. There will be.

In addition, the drain portion 96 having a drain groove 96a is formed at the lower end of the LED module 90 according to the present invention. The drain 96 will drain the water penetrating the inside so as not to contact the electrical components such as a printed circuit board installed in the controller operation unit. When the LED module 90 including the drain portion 96 is installed around the rotary switch in the controller operation part, the LED module 90 is installed with a constant inclination toward the front, so that water collected in the drain portion 96 is inclined. By flowing downward, the surrounding electrical components will be protected from water. And the drain portion 96 may be molded only in the lower portion of the LED module 90 as shown, it is also possible to form along any portion of the body portion 92 of the LED module 90, of course. . However, it is sufficient that the drain portion 96 can drain the water to the lower side of the front panel of the washing machine or the controller operating portion 24 by having the drain groove 96a extending downward.

And the fastening hook 98 is molded in the lower end of the LED module 90 according to the present invention. The fastening hook 98 is fastened to the PCB board 84 to support the LED module 90 as a whole.

As described above, according to the present invention, it is a basic technical idea to form a drain having a drain groove in the LED module 90 and to prevent the operation knob from leaving the front. Within the scope of the basic technical idea of the present invention, of course, many other modifications are possible to those skilled in the art. It is apparent that the present invention should be determined based on the description in the appended claims.

According to the present invention configured as described above will be expected the following effects.

According to the LED module of the present invention, by having a drain groove, it can be seen that it is configured to easily drain the water penetrating into the outside. Therefore, it can be expected that the advantages that can solve various problems of the electrical components due to the penetration of water. In addition, by the LED module, it is possible to completely eliminate the fear that the peripheral parts are damaged by excessively pressing the operation knob. And by the configuration of the light emitting portion formed in the LED module, it is possible to provide a convenience that can provide lighting so that the location of the washing machine and the operation knob can be easily known even in a dark place.

In addition, according to the connection relationship between the operation knob and the front panel according to the present invention, it is possible to prevent the operation knob from leaving the front arbitrarily, as well as to allow water to penetrate into the controller of the washing machine through the operation knob. You can expect the benefits of being prevented. This structure, combined with the above-described drainage part of the LED module, can completely solve the electrical problems inside the controller by the water, and will appear as an effect that can substantially improve the reliability of the product.

Claims (7)

A front panel formed with a switch coupling hole; A casing installed on the rear surface of the front panel and provided with a rotary switch; An operation knob connected to the rotary switch through the switch coupling hole; And Washing machine operation knob mounting structure characterized in that it comprises a body portion surrounding the outer side of the rotary switch, and the LED module is formed by extending down the body portion, the drain portion having a drain groove. A front panel formed with a switch coupling hole; A casing installed on the rear surface of the front panel and provided with a rotary switch; An operation knob connected to the rotary switch through the switch coupling hole; And It is installed to surround the outside of the rotary switch, the operation knob mounting structure of the washing machine, characterized in that it comprises an LED module that at least one side is in contact with one side of the operation knob when the operation knob is pressed over a predetermined interval. . The operating knob mounting structure of a washing machine according to claim 1 or 2, wherein a light emitting part for emitting light by application of an electric current is provided on an upper surface of the LED module. 3. The operation knob mounting structure of claim 1, wherein the rear end of the operation knob extends radially from the rear surface of the front panel while passing through the switch coupling hole. The rear end of the operation knob comprises: a rear end extension extending radially from the rear end of the operation knob, and a rear end peripheral edge extended upward from the rear end extension; The inner periphery of the switch coupling hole is the operating knob mounting structure of the washing machine, characterized in that extends downward from the inner side of the outer peripheral portion. The method of claim 1 or 2, wherein the rotary switch and the LED module is installed on a PCB substrate installed inside the casing, the urethane coating layer is formed on the PCB substrate so that a portion of the rotary switch and the LED module is buried. Operation knob mounting structure of washing machine. According to claim 1, wherein the body portion of the LED module, the operating knob mounting structure of the washing machine, characterized in that at least a portion of the operating knob is in contact with the operation knob when pressed.