KR20100063175A - Rotary switch and washing machine having the same - Google Patents

Abstract

PURPOSE: A rotary switch and a washing machine including the same are provided to improve the manipulating feeling of a dial knob to user by forming a concave-convex on the outer circumference of a rotator while a locking ball moves by a step. CONSTITUTION: A rotary switch comprises: a rotator(120) wherein a concavo-convex(122) is formed in the outer circumference; and a rotator auxiliary section which supports the operation of the rotator and comprises a locking ball(113) which elastically contacts to the concavo-convex of the rotator; a spring(112) which supplies the elastic force to the locking ball; and a vibration plate(300) which is located in the rear end of the spring.

Description

Rotary switch and washing machine having the same {Rotary Switch and Washing Machine Having The Same}

The present invention relates to a washing machine, and more particularly, to a washing machine that enables a rotary switch to produce a clear and refined operation sound and improves the operation feeling of a dial knob.

In general, a washing machine is a device that removes stains from laundry, so that the laundry is soaked in the detergent solution in which the detergent is dissolved so that the stain on the laundry can be removed by the chemical action of the detergent, and it can be removed from the laundry by mechanical action such as friction or vibration. Water flow is forced into the detergent solution so that it can be easily removed. Among them, the drum washing machine has a drum on which the laundry is placed horizontally to prevent damage and tangling of the laundry, and has a washing effect of knocking and rubbing.

The drum washing machine is a device for lifting laundry to the upper side and dropping the laundry to be washed by the drop. The drum washing machine includes a main body forming an exterior, a tub installed inside the main body to contain laundry water, and A rotating drum is rotatably installed inside the tub.

The drum washing machine washes and dehydrates the laundry by moving the laundry along the inner circumferential surface of the rotating drum up and down with the washing water as the rotating drum arranged horizontally rotates in a clockwise and counterclockwise direction.

On the other hand, the drum washing machine as described above is provided with a control panel in which a dial knob and various operation buttons are installed so that the user can select and adjust the functions of the drum washing machine at the upper front side of the main body.

The inside of the control panel is provided with a circuit board for controlling the internal devices of the drum washing machine to perform the operation input through the dial knob and the operation button. In addition, the circuit board is provided with a rotary switch for transmitting a manipulation of the dial knob by the user to the circuit board. The shaft of the rotary switch is coupled to the dial knob, and the rotary switch transmits the operation of the dial knob to the circuit board.

In the rotary switch, the elastic plate of the metal material is brought into sliding contact with the switch pattern, thereby making the switch on / off.

The rotary switch is assembled with a switch pattern on the bottom surface of the circular groove, the terminal protrudes to the outside, and is rotatably received in the circular groove of the body, and irregularities are formed on the outer circumferential surface at regular intervals, and sliding contact with the switch pattern on the bottom surface. And a rotating body having a shaft formed on the upper side thereof, a locking ball assembled to be protruded toward the circular groove side of the body and elastically contacting the unevenness, a spring for providing elastic force to the locking ball, and a rotating body from the fixed body. The cover plate is coupled to the fixture to prevent the separation of the.

When the rotary switch rotates the dial knob in a desired operation mode, the rotating body is rotated and the elastic plate is in sliding contact with the switch pattern to turn on the power of the corresponding operation mode.

At this time, the locking ball is elastically in contact with the irregularities on the outer circumferential surface of the rotating body by the spring to generate the operation sound as well as to accurately control the contact position of the elastic plate and the switch pattern.

However, when the rotary switch rotates the rotary body by the operation of the dial knob, the operation sound is generated by the locking ball and the spring. The operation sound is not clear, and the operation sound generated by the collision with the plastic body is dull. There is a problem that the sound is generated, the emotional quality is poor.

Instead of the locking ball and the spring, a leaf spring having a protrusion that elastically contacts the unevenness of the rotating body may be used. In this case, the protrusion of the leaf spring may be recessed one by one by operating the dial knob. There is a problem that the operation feeling transmitted to the dial knob is weak every time it moves, so that the user feels insensitive.

One aspect of the present invention is to provide a clear and refined sound of operation when operating the dial knob, to disclose a washing machine with improved operation feeling of the dial knob.

According to the spirit of the present invention, in a washing machine including a main body forming an appearance and a rotary switch provided on an internal circuit board of a control panel of the main body, the rotary switch is a body having a stator assembled to a bottom surface of a circular groove. And a rotatable body which is rotatably received in the circular groove of the body and has a concave-convex shape formed at regular intervals on the outer circumferential surface thereof, and a rotor having sliding contact with the stator on the bottom surface thereof, and a shaft having a shaft to which the rotary knob is coupled to the upper side thereof. A cover plate coupled to the body to prevent detachment of the rotating body, and a rotating body auxiliary part for assisting the operation of the rotating body, wherein the rotating body auxiliary part is assembled to be protruded toward the circular groove side of the body and is burnt in the unevenness. A locking ball in sexual contact, a spring for providing an elastic force to the locking ball, and a rear side of the spring It characterized in that it comprises a diaphragm.

The locking ball, the spring, the diaphragm may be made of iron.

Washing machine according to an embodiment of the present invention described above by installing a locking ball, a spring and a diaphragm on the body of the rotary switch, it can generate a clear and refined operation sound when operating the dial knob, the user through the dial knob Operation feeling delivered to the hand is improved. Thus, there is an effect of improving the emotional quality, which is a trend of today's home appliances.

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

1 is a perspective view schematically showing a drum washing machine according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the drum washing machine shown in Figure 1, Figure 3 is a rotary switch according to an embodiment of the present invention 4 is an exploded perspective view of the main assembly of FIG. 3.

As shown in Figure 1 and 2, the drum washing machine according to an embodiment of the present invention and the main body 10 to form an appearance, installed inside the main body 10 and the washing water is stored at the time of washing The tub 20 and the tub 20 is rotatably installed in the tub 20 and has a rotating drum 30 in which laundry is washed.

At this time, the door 11 is installed on the front or upper surface of the main body 10 so as to open and close the opening for input of laundry.

Then, the lifter 31 is mounted to the inside of the rotating drum at regular intervals so as to wash the laundry by lifting the laundry to the upper portion of the rotating drum 30 when the rotating drum is rotated.

Inside the main body 10, a water supply pipe 51 for supplying washing water and detergent to the tub 20 and a detergent supply device 52 are installed. Detergent supply device 52 has an inner space for receiving a detergent therein, is installed on the front side of the main body 10 to facilitate the user to put the detergent. In addition, a drain pump 56 and a drain pipe for draining the wash water contained in the tub 20 to the outside of the main body 10 are installed below the main body 10.

The lower side of the tub 20 is provided with a drive motor 41 for rotating the rotary drum 30, between the drive motor 41 and the rotary drum 30 to rotate the rotational force of the drive motor 41 a rotating drum ( 30 is provided with a drive belt 43 for transmission.

At this time, in order to transmit the rotational force of the drive motor 41 to the rotary drum 30 through the drive belt 43, a motor pulley 42 is formed on one side of the drive motor 41, the rotary drum 30 At the rear of the drum pulley 33 is formed. That is, when the driving motor 41 rotates, the driving belt 43 wound around the motor pulley 42 is rotated to rotate the drum drum 30 by rotating the drum pulley 33.

On the other hand, the drum washing machine as described above is provided with a control panel 15 is installed on the front side of the main body 10, the dial knob 140 and various operation buttons so that the user can select and adjust the function of the drum washing machine.

Inside the control panel is provided a circuit board for controlling the internal devices of the drum washing machine to perform the operation input through the dial knob 140 and the operation button. Then, the circuit board is provided with a rotary switch for transmitting the operation of the dial knob 140 by the user to the circuit board. The shaft 121 of the rotary switch is coupled to the dial knob, and the rotary switch transmits the operation of the dial knob 140 to the circuit board so that the operation of the washing machine is controlled.

Referring to FIGS. 3 and 4, the rotary switch is rotatably received in the body 110 having the stator 114 assembled to the bottom surface of the circular groove 111, and the circular groove 111 of the body 110. Concave and convexity 122 is formed on the outer circumferential surface and the rotor 123 sliding contact with the stator 114 is assembled on the bottom surface, and the rotating body having a shaft 121 to which the dial knob 140 is coupled to the upper side ( 120 and a rotating body auxiliary part that assists the operation of the rotating body 120. The rotor 123 is composed of an elastic plate capable of elastic deformation, the stator 114 is electrically connected to the terminal 115 as a switch pattern according to the operation mode. Reference numeral 130 is coupled to the body 110 as a cover plate to prevent the departure of the rotating body 120.

The rotatable auxiliary part is assembled to be protruded toward the circular groove 111 side of the body, the locking ball 113 to elastically contact the concave-convex 122, and the spring 112 to impart an elastic force to the locking ball 113 ) And a diaphragm 300 positioned on the back side of the spring 112. The locking ball, spring, diaphragm is made of iron.

Hereinafter will be described the operation of the rotary switch and the washing machine according to an embodiment of the present invention.

When the user rotates the dial knob 140 in the desired operation mode, the rotary switch rotates the rotor 120 and the rotor 123 is in sliding contact with the stator 114 to turn on the power of the corresponding operation mode. .

The spring 112 is elastically deformed while the locking ball 113 elastically contacts the outer circumferential surface irregularities 122 of the rotating body 120 while the spring 112 is elastically deformed and returned to its original state. The vibration plate 300 generates a friction sound and a collision sound, and the user recognizes this as the operation sound of the rotary switch.

By using the locking ball 113 and the spring 112 as the rotational auxiliary portion, the user's hand through the dial knob 140 each time the locking ball 113 moves the concave-convex 122 of the rotating body 120 by one space. This improves the feeling of operation, and the user can intuitively control the degree of control of the rotary switch.

And, by placing the diaphragm 300 made of iron on the back side of the spring 112, the operation sound is generated by friction and collision between the spring 112 and the diaphragm 300, the operation sound is hit by a plastic material It's not a dull sound, but a crisp and sophisticated sound.

That is, the user can obtain a great satisfaction in terms of touch and hearing when operating the dial knob 140.

When the operating mode of the washing machine is selected by the above process, the washing machine performs a process of washing, rinsing, dehydrating, drying, etc. according to the selected function.

Although the above-described embodiment has been described with respect to the rotary switch mounted on the washing machine, the rotary switch may be applied to various electronic products such as a microwave oven, a DVD, a car, and the like to control the operation mode by operating the dial knob.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains can variously change without departing from the gist of the technical idea of the present invention described in the claims below. Could be done.

1 is a perspective view schematically showing a drum washing machine according to an embodiment of the present invention.

2 is a cross-sectional view showing the drum washing machine shown in FIG.

Figure 3 is an exploded perspective view of the rotary switch according to an embodiment of the present invention.

4 is a plan view of essential parts assembly of FIG. 3.

Description of the Related Art [0002]

10: body 11: door

15: control panel 20: tub

30: rotating drum 31: lifter

110: body 111: circular groove

112: spring 113: rocking ball

114: stator 115: terminal

120: rotating body 121: shaft

122: unevenness 123: rotor

130: cover 140: dial knob

300: diaphragm

Claims (4)

In the rotary switch comprising a rotary body coupled to the rotary knob rotates and the irregularities formed on the outer circumferential surface, and a rotating body auxiliary portion for assisting the operation of the rotating body, And the rotating body auxiliary part includes a locking ball elastically contacting the concavities and convexities of the rotating body, a spring for providing an elastic force to the locking ball, and a diaphragm positioned at a rear side of the spring. The method of claim 1, The locking ball, the spring, the diaphragm is a rotary switch, characterized in that made of iron. In the washing machine comprising a main body forming an appearance and a rotary switch provided on an internal circuit board of one side control panel of the main body, The rotary switch is a body in which the stator is assembled on the bottom surface of the circular groove, and rotatably received in the circular groove of the body, and irregularities are formed on the outer circumferential surface at regular intervals, and a rotor which is in sliding contact with the stator on the bottom is assembled. Rotating body is formed with a shaft coupled to the dial knob, a cover plate coupled to the body to prevent the departure of the rotating body from the body, and a rotating body auxiliary portion for assisting the operation of the rotating body, The rotating body auxiliary part includes a locking ball which is assembled to be protruded toward the circular groove side of the fixed body and elastically contacts the unevenness, a spring that provides elastic force to the locking ball, and a diaphragm positioned on the rear side of the spring. Washing machine characterized in that. The method of claim 3, The locking ball, the spring, the diaphragm is a washing machine, characterized in that made of iron.

Images