JP5764512B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine, and more particularly to a moisture-proof treatment applied to a dial-type controller.

  In a dial-type controller provided on an operation panel of a washing machine or the like, moisture-proof treatment is generally performed using urethane resin or the like in order to prevent corrosion of terminals and the like of board-mounted components. For example, in Patent Document 1 below, a rotary encoder incorporated inside a dial and a display element made of LEDs are installed on separate substrates, respectively, and the substrate on which the display element is installed is subjected to moisture-proof treatment using a resin. A structure of an operation panel of a washing machine is disclosed.

JP 2011-136221 A

  In the conventional operation panel described above, since the rotary encoder and the display element are installed on separate substrates, wiring for connecting both substrates is required, and each substrate needs to be moisture-proof, so that productivity is improved. Is not expensive.

  The objective of this invention is providing the washing machine provided with the setting dial which raised the productivity, aiming at moisture prevention.

A washing tub for storing clothes, an outer tub containing the washing tub, a dial for setting operation details, a rotary encoder attached to the dial and outputting a signal as the dial rotates, and the operation details In a washing machine provided with a correspondingly lit display element, the rotary encoder and the display element are arranged on a common substrate, and have a partition wall that covers the entire circumferential direction of the rotary encoder, On the substrate, the resin is filled from the outside to the inside of the partition wall, the height of the resin inside the partition wall is made lower than the height of the outside resin, and the front end side of the rotary encoder is covered, The resin is filled on the substrate in a state where a resin intrusion prevention component is mounted on the partition wall .

  ADVANTAGE OF THE INVENTION According to this invention, a washing machine provided with the setting dial which aimed at moisture prevention and improved productivity can be provided.

It is a figure which shows the external appearance of the drum type washing machine which concerns on the Example of this invention, (a) is a top view, (b) is a front view. It is the figure which expanded the operation panel of the drum type washing machine which concerns on the Example of this invention. It is an exploded view of the operation panel of the drum type washing machine according to the embodiment of the present invention. It is a figure which shows the detail of the structure on the board | substrate just before resin injection | pouring (resin injection auxiliary cap mounting | wearing state). It is a figure which shows the detail of the structure on the board | substrate just after resin injection | pouring (resin injection auxiliary cap mounting | wearing state). It is a figure which shows the detail of the structure on a board | substrate in the state which removed the resin injection | pouring auxiliary cap and attached the course setting dial after resin injection.

  Embodiments of the present invention will be described below with reference to the drawings.

  1A and 1B are views showing an external appearance of a drum type washing machine 100 according to the present embodiment, where FIG. 1A is a plan view and FIG. 1B is a front view.

  As shown in FIG. 1, the drum type washing machine 100 has an outer frame 1 whose outer shell is configured by combining a steel plate and a resin molded product. The outer frame 1 includes a base 1f, and left and right side plates 1a, 1b, a front cover 1c, a back cover 1d, and a top cover 1e are attached above the base 1f to form a box-shaped outer frame 1. ing.

  At the approximate center of the front cover 1c, there is formed a slot for loading and unloading laundry such as clothes into and out of the drum. A door 7 that is opened and closed when the laundry is loaded and unloaded through the slot is a hinge mechanism. It is attached so that it can be opened and closed. A handle 7 a for releasing the lock mechanism of the door 7 is provided on the right side of the door 7. By pulling the handle 7a forward, the locking mechanism is released and the door 7 is opened, and the door 7 is pressed against the front cover 1c to be locked and closed.

  In addition, a drawer type detergent box (detergent input unit) 11 for supplying detergent, finishing agent, and the like is disposed on the outer frame 1, and an operation panel 6 is provided on the right side of the detergent box 11. ing.

  Further, although not shown, the outer frame 1 of the drum type washing machine 100 includes a drum as a washing tub for storing clothing and an outer tub for containing the drum. And it is possible to perform a washing process, a rinsing process, a dehydrating process, etc. by rotating a shaft coupled to the drum with a drive motor. In this embodiment, a drum type washing machine will be described, but it should be understood that a drum type washing machine may be provided.

  As shown in FIGS. 2 and 3, the operation panel 6 includes a power switch 2, an operation switch 3, a course setting dial 4, a liquid crystal display unit 5, and the like. Here, the operation switch 3 is a button for appropriately changing the washing time, the number of times of rinsing, and the like, and the course setting dial 4 is for selecting operation details such as a careful course and a blanket course as appropriate. When this course setting dial 4 is rotated, corresponding driving courses are switched one after another, and a display element 8 such as an LED in a place showing the corresponding driving course contents is lit to notify the user.

  The course setting dial 4 is installed coaxially with the rotary encoder 9, and when the rotating portion of the rotary encoder 9 rotates as the course setting dial 4 rotates, the detecting portion of the rotary encoder 9 detects it. The rotary encoder 9 outputs a position signal when a contact provided on the rotating unit comes into contact with a contact connected to the output terminal.

  Next, the structure of the substrate 10 on which the rotary encoder 9 and the like are installed will be described with reference to FIG.

  As shown in FIG. 6, the bottom surface of the rotary encoder 9 and the support member 11 is disposed on the common substrate 10 in addition to the display element 8 such as an LED. The support member 11 includes an element mounting portion 11a for inserting and supporting a plurality of display elements 8, an annular wall surface 11b positioned on the outer peripheral side of the rotary encoder 9 and extending in the axial direction thereof, and a tip of the annular wall surface 11b. It has an engaging portion 11c provided on the side for holding the detachable component. Since the rubber packing 13 is attached to the concave engaging portion 11 c of the support member 11, it is possible to prevent water from entering the rotary encoder 9 from the back side of the course setting dial 4. .

  Next, a process for filling the substrate 10 with the resin 14 and moisture-proofing the mounted components will be described with reference to FIGS.

  First, the display element 8, the rotary encoder 9, and the support member 11 are attached on the substrate 10 (step S1).

  Subsequently, as shown in FIG. 4, the engaging portion 11 c of the support member 11 is fitted with the engaging portion of the resin injection assisting cap 15 as a resin intrusion preventing component to cover the distal end side of the rotary encoder 9 (step S2).

  Thereafter, as shown in FIG. 5, urethane resin is injected from a resin injection port 11 d (not shown) provided on the outer surface of the annular wall surface 11 b and provided on the upper surface of the support member 11 (step S <b> 3). After the injection, the resin 14 spreads over the entire top surface of the substrate 10, and the resin 14 also enters the inner peripheral side of the annular wall surface 11 b of the support member 11 from the gap between the bottom end of the annular wall surface 11 b of the support member 11 and the substrate 10. . However, the annular wall surface 11b of the support member 11 is formed with a partition wall without a gap from the bottom end to the engagement portion 11c at the tip, and the resin injection auxiliary cap 15 is attached to the engagement portion 11c. Yes. For this reason, air leakage is prevented from the height position of the surface of the resin 14 to the resin injection auxiliary cap 15, and the liquid level of the resin 14 entering the inside of the partition wall is equal to the liquid level height outside the partition wall. Compared to lower. That is, since the area inside the partition wall where the rotary encoder 9 exists is in an airtight state, the liquid level of the resin 14 is unlikely to rise extremely. Specifically, at the time of resin injection, even if the height of the resin 14 outside the partition wall is higher than the joint portion of the pedestal of the rotary encoder 9, the height of the resin 14 inside the partition wall is the height of the rotary encoder 9. Lower than the base joint.

  Here, when the resin 14 enters the parts of the rotary encoder 9 from the joint portion of the pedestal, conduction between the contact provided on the rotating portion and the contact connected to the output terminal is hindered, and the rotary encoder 9 is May impair performance. However, by making the inside of the partition wall airtight as described above, the resin 14 is prevented from entering the parts of the rotary encoder 9, and as a result, the reliability of the rotary encoder 9 is improved.

  Next, the resin injection auxiliary cap 15 is removed, and instead the rubber packing 13 is attached to the engaging portion 11c of the support member 11 (step S4).

  Finally, as shown in FIG. 6, the locking portion of the course setting dial 4 is supported while being in contact with the sliding surface portion of the support member 11, and the bottom center concave portion of the course setting dial 4 is placed on the tip side of the rotary encoder 9. (Step S5).

  As described above, according to the present embodiment, since the display element 8 and the rotary encoder 9 are installed on the common substrate 10, wiring for connecting the display element 8 and the rotary encoder 9 is unnecessary, and productivity is improved. Not only will it improve, but it will also increase the accuracy of alignment. Further, even when the display element 8 and the rotary encoder 9 are installed on the common substrate 10 and moisture-proofing with the resin 14 is performed, the partition wall that covers the entire circumferential direction of the rotary encoder 9 is provided. It is possible to prevent the resin 14 from entering the parts of the encoder 9.

DESCRIPTION OF SYMBOLS 1 Outer frame 2 Power switch 3 Operation switch 4 Course setting dial 5 Liquid crystal display part 6 Operation panel 7 Door 8 Display element 9 Rotary encoder 10 Board | substrate 11 Support member 12 Detergent box 13 Rubber packing 14 Resin 15 Resin injection auxiliary cap

Claims (4)

A washing tub for storing clothes;
An outer tub containing this washing tub;
Dial to set the operation details,
A rotary encoder that is attached to the dial and outputs a signal along with the rotation of the dial;
In a washing machine equipped with a display element that lights up according to the driving details,
The rotary encoder and the display element are arranged on a common substrate,
A partition wall covering the entire circumferential direction of the rotary encoder,
On the substrate, resin is filled from the outside to the inside of the partition wall,
The direction of the inside of the resin height of the partition wall, rather lower than the outer resin height,
The washing machine according to claim 1 , wherein the resin is filled on the substrate in a state in which a resin intrusion prevention component is mounted on the partition wall so that the front end side of the rotary encoder is covered . A washing tub for storing clothes;
An outer tub containing this washing tub;
Dial to set the operation details,
A rotary encoder that is attached to the dial and outputs a signal along with the rotation of the dial;
In a washing machine equipped with a display element that lights up according to the driving details,
The rotary encoder and the display element are arranged on a common substrate,
A partition wall covering the entire circumferential direction of the rotary encoder,
On the substrate, resin is filled from the outside to the inside of the partition wall,
An engagement portion for holding a detachable component is provided on the distal end side of the partition wall,
The partition wall is configured without a gap so that air does not leak from the height of the surface of the resin to the height of the engaging portion ,
The resin is filled on the substrate in a state in which the engagement portion of the resin intrusion prevention component is fitted to the engagement portion of the partition wall so that the front end side of the rotary encoder is covered. A washing machine featuring. In claim 2 ,
A washing machine, wherein a rubber packing is attached to the engaging portion. Dial to set the operation details,
A rotary encoder that outputs a signal as the dial rotates;
In the mounting method of attaching the display element that displays corresponding to the predetermined operation content to the operation panel of the washing machine,
The rotary encoder and the display element are arranged on a common substrate,
A resin intrusion prevention component is attached to the partition wall that covers the entire circumferential direction of the rotary encoder so that the tip end side of the rotary encoder is covered .
After filling the resin from the outside of the partition wall, remove the resin intrusion prevention parts,
A mounting method comprising mounting the dial coaxially with the rotary encoder.