JPS5977899A - Electric washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric washing machine, and particularly to a front panel type electric washing machine having an operation panel section on the front surface of an outer frame.

Conventional configuration and its problems Conventionally, this type of electric washing machine has a top cover with an opening/closing lid, and a lid switch mechanism that operates by opening and closing the lid and detects abnormal vibrations in the outer tub. was attached to a pulp support fixed to the underside of the corner plate at the top of the outer frame.

Therefore, there is a problem in that the lid switch mechanism comes into contact with water splashing or steam during the dehydration operation, causing various accidents.

Purpose of the Invention The present invention solves the above-mentioned conventional problems and improves performance by attaching a highly waterproof lid switch mechanism to the top cover and preventing enamel cracking of the top cover when attached to the top cover. This provides a stable electric washing machine.

Structure of the Invention The present invention provides an opening/closing lid on a top cup made of an iron plate, etc., and a lid switch mechanism that is operated by opening and closing the lid and is activated by detecting abnormal vibrations in the outer tank. The switch mechanism is surrounded by a cover formed from a sheet-like material that is easy to assemble, and the lid switch mechanism and the top cup are screwed together using a part of this cup (-) to connect the lid switch mechanism and the top cup (-). Description of an embodiment that also prevents enamel cracking An embodiment of the present invention will be described below with reference to the accompanying drawings.

On the top surface of the outer frame 1, corner corners V-)2 are provided diagonally.
．． A is welded and fixed via bent flanges 2A and 3A formed on the outer frame side surface.

Hanging rods 6 on which outer tubs 4 are suspended are attached to the corner plates 2 and 3, and a basket 6 for washing and dewatering is rotatably attached to the outer tub 4 at a concentric position.
A pulsator 7 is rotatably attached to the center of the bottom of the basket 6.

On the outside of the front surface of the outer frame 1, an operation panel is formed as shown in FIG. It covers the part fixed to the outer frame 1.

Each switch is attached directly to the outer frame 1 or via a switch base, and this panel includes a timer 9 that controls the operating process, a water level selector switch 1o, and a washing and rinsing switch. In addition to switches such as a temperature selector switch 11 and a dehydration selector switch 12, an indicator lamp, a buzzer, etc. are installed, and lead wires are connected from the switches to each electrical component using the inner periphery of the upper end of the outer frame 1. It is wired.

The arrangement of the main electrical components will be explained with reference to FIGS. 1 to 4.

First, a drive unit consisting of a motor 13 that drives the pulsator 7 during washing and rotationally drives the basket 6 during dehydration, and a clutch that switches between washing and dehydration is attached to a board fixed to the lower part of the outer tub 4. Next, in the panel section, there are 115 timers, 19 i+, 1. J1'i: I'llll'I
In order to effectively use the space between the small outer frame 1 and the outer tank 4 having a circular cross section, the water level selector switch 1 is placed at the right end of the panel section in order of size from the left end of the panel section.
o, a temperature changeover switch 11, and a dehydration changeover switch 12 are arranged.

The air chamber of the outer tank 4 and the water level switch 10 are communicated with each other by an air hose 14, and a water supply valve 15 is provided at the rear of the outer frame 1.
is fixed to the outer frame 1 with screws 17 via a mounting plate 16, and faces the connection port of the water supply hose led from the water faucet. Note that the hot water supply connection port 18 is a water supply connection port.

Further, a drainage pump 20 is fixed below the outer frame 1 and has a discharge port 21 facing therein, and the bottom of the outer tank 4 and the pump 2° are connected by a hose 22.

The front panel of the outer frame 1 has operation parts for various switches, and the rear part has a water supply valve 16 and a water supply hose connection port 18.1.
9 and the discharge ports of the pump 20 are protruding, and hose hooks etc. are also attached, so it is not possible to tilt the outer frame 1 sideways in the front and rear directions. Since it is necessary to perform repair work, buffer members 23 are attached to the left and right inner surfaces of the outer frame 1.

Next, a lid switch 25 has a function to detect abnormal vibrations in the outer tank 4 during dewatering and interrupt the operation, and a function to similarly interrupt the operation if the lid 24 is moved beyond a safe angle. is arranged on the rear inner surface of a top cover 26 made of an iron plate that covers the upper part of the outer frame 1, and a lever 27 for detecting abnormal vibrations of the outer tank 4 is suspended from the lid switch 26.

The lid switch 25 is operated by a lever unit 28 that is pivotally supported by support shafts 29 and 30 attached to both rear side surfaces of the lid 24.

In addition, to prevent the lid 24 from being opened more than necessary,
This is done by a strut horn part 31 formed integrally with the support shaft 3o. When fixing the lid switch 26 to the outer frame 1,
The installation location of the lid switch 26 is limited to the corner space between the circular outer periphery of the outer tank 4 and the corner of the rectangular outer frame 1 because it is necessary to detect abnormal vibrations of the outer tank 4, so the weight of the drive unit etc. It is necessary to install it near the corner plate 3 from which the
There wasn't.

Therefore, when a load is applied to the basket 6, the corner plate 3 and the outer frame 1 are elastically deformed, and the lid switch 2
5 and the lever 27 are displaced, causing abnormal vibration of the outer tank 4 and lid 2.
There is an inconvenience that the safety angle of 4 cannot be detected accurately.
The lid switch 25 is arranged on the top cover 26. A rectangular step 32 is formed in the center of the top cover 26 to accommodate the lid 24, and a laundry loading/unloading port 33 is provided in the center of the step 32. Lid 2
4 is provided with a recess 34 where a hand is placed for opening and closing. In addition, since the top cover 26 is made of an iron plate, it has excellent strength, and the lid switch 25 attached to the top cover 26 can be operated accurately.

A water injection device 35 is attached to the inner surface of the top cover 26 located behind the laundry input and output port 33 of the top cover 26, and a water supply valve 16 and a hose 3 are attached to the rear surface of the outer frame.
They are connected by 6.

Next, a configuration for attaching the top cover 26 to which the lid 24, the lid switch 25, and the water filler 36 are attached to the outer frame 1 will be described. A support metal fitting 37 is fixed to the rear surface of the outer frame 1 with screws 38, and this support metal fitting 37 has a flat plate portion 3.7 that is in close contact with the rear surface of the outer frame 1, an arcuate curved portion 37B, and a flat plate portion 37A. The rising portion 370 consisting of parallel surfaces, the bent portion 37D and the angle θ
and are connected to the bent tongue portion 37 forming the curved tongue portion 37, and the relationship between the width F of the arcuate bent portion 37B and the width G of the bent tongue portion 37 is F)G. It has a section 39. On the other hand, the rear surface of the top cover 26 is provided with a square hole 40 whose height and width J are K)H, F)J)G. As shown in FIG. 8, the bent tongue piece 371Ei of the support fitting 37 is inserted into the square hole 4o of the tab cover 26, and the rear surface of the top cover 26 is brought into contact with the rising portion 37G of the support fitting 37. The inwardly bent flange 26A on the lower surface of 26 is formed with a notch 26B in a part of the corner, thereby forming a corner 7'L/- on the upper surface of the outer frame 1.
The stepped portion 26 is formed on the front side of the top cover 26 to avoid hitting the bent flanges 2 and 3 of the top cover 26.
Screw located at G 41i7i: yor) Coat-t-7”
Lz-) 2 and 3 bent flanges.

Fixed at 3 people. Therefore, the lid switch 25 and the like can be firmly and reliably fixed to the top cover 26, and the lid switch 25 can operate reliably. The rear surface of the top cover 26 is connected to a support metal fitting 3 that is in contact with the rear surface of the outer frame 1.
7, the outer edges of the outer frame 1 and the top cover 26 do not shift, which is preferable in terms of appearance, and the assembly can be easily performed. Furthermore, by removing the screw 41''f, the top cover 26 can be rotated as a fulcrum at the bent portion 37D'i of the support fitting 37 arranged at the back end of the outer frame 1. At this time, the 7 langes 26 of the top cover 26 In order to maintain the open state of the top cover 26 by touching the tongue portion 37KKl of the support fitting 37, wiring to the lid switch '26, attachment of the hose 36 to the water injection device 35, and removal of the peek can be done on the assembly line. As a result, the assembly workability is improved, and the above-mentioned repair work as well as the inspection and repair of the inside of the outer frame 1 are facilitated, which is an excellent effect.

Next, the structure of the lid switch 25 will be described with reference to FIG. A microswitch 44 is fixed to the substantially U-shaped switch plate 42 with a screw 43, and the microswitch 44 in parentheses
A switch lever 46 provided at the tip of the contact portion 45Ai corresponding to the operation button 44A of No. 4 is rotatably engaged in a square hole 42 of the switch base 42 provided at the other end of the engagement portion 45B'ii. . When the lid 24 is opened and closed, the lid lever 4e, which is operated by the integrated lever 28, engages the engaging portion 46 provided at one end with the square hole 42B of the switch (-seat 42). 42 in a rotatable manner.Furthermore, a bent portion 46B provided at the other end of the lid lever 14
An adjustment fitting 47 is fixed to the elongated adjustment hole 460f, and this adjustment fitting 47 becomes a contact portion with the lever unit 2B fixed to the lid 24. Next, outer tank 4
The upper end of the lever 27 that detects abnormal vibrations is the bottom hole 42G of the switch base 42 and the hole 46D of the lid lever 46.
The square hole 27A inserted at the top end is the lid lever 46.
It is rotatably inserted into the protrusion 46IC positioned in the hole 46D. A protruding piece 4sO of the switch lever 45 is engaged with the square hole 278 at the upper end of the lever 27, one end of which is engaged between the hole 27C92TA of the lever 27, and the other end is engaged with the switch lever 45. It is made detachable by a tension spring 4e that is engaged with the engagement portion 42D.

The switch base 42 is fixed to the board 50 with screws 61, and the mounting surface 50A of the board 6o is fixed to the rear surface of the top cover 26 with screws 62.

The bent portion esoB of the board 60 comes into elastic contact with the inner surface of the top cover 26 when placed on the tongue piece cut and raised on the rear wall of the storage step portion 32 of the top cover 26 with the bent flange 50Gf provided at the other end. come into contact with Therefore, the lid switch 26 is fixed to the rear surface of the top cover 26 by the base plate 60 with the screw 52, and the other end 50C is cut and raised by the reaction force of the bent portion s o and B, and is pressed against and engaged with the tongue piece 26G. The outer tank 4 suspended within the outer frame 1 can be stably mounted without being deformed by the weight.

In addition, there is no need to use screws to attach the board 60 to the top surface of the top panel 26, and there is no need to fix it by welding to the board, so there is no impact on the appearance, resulting in an effective lid switch mounting structure. becomes. Next, the operation of the lid switch 25 will be explained.

The lid switch 25 assembled as shown in FIG.
When 4 is opened, the lid lever 46 is displaced by the spring 49 to the position shown by the chain line, the lever 27 engaged with the protrusion 46K is also displaced downward, and the switch lever 46 engaged with the square hole 27B is also displaced downward. The contact part 45A rotates as shown by the chain line, and the contact part 45A releases the energization of the operation button 44A of the microswitch 44, and the microswitch 44 closes the internal circuit to stop the operation. When the lid 24 closes, the contact part 45A is the operation button 44A
is pushed up to close the microswitch 44 and return to the operating state. Further, if abnormal vibration occurs in the outer tank 4 during operation, the lever 27 is displaced to the chain line state using the protruding piece 4eg of the lid lever 46 as a fulcrum, and the square hole 27B is moved to the position of the switch lever 46.
The switch lever 45 is rotated to the chain line state, closing the microswitch 44 and stopping the operation. In this case, to return, open the lid 24, move the lid lever 46 downward, and lower the lever 27 to the square hole 27B.
After locking the protruding piece 46C of the switch lever 46 with the biasing force of the i5 spring 49, the switch lever 45 is re-engaged with the contact portion 45A by closing the lid 24.
4A'ii is pushed up to close the microswitch 44 and continue operation.

To ensure that the operation is interrupted when the lid 24 is opened beyond the full safe angle, tighten the lid lever 46 and adjustment fitting 47 with screws 48, and attach the lid 24 and lid switch 25 to the top cover 26. Since the parts are attached together and can be assembled and adjusted in advance, there is no confusion in the assembly line, improving assembly work efficiency and ensuring reliable operation of the lid switch.Furthermore, the compact structure allows parts to be made smaller. It can also be measured.

Next, referring to FIG. 12, we will describe how to attach a cover to the above-mentioned lid switch structure to protect it from water droplets being sprayed by the water injector 36 or during dewatering, or from adhering to water droplets due to steam.

The waterproof cover 63 made of a 7-metal material such as polypropylene or polyethylene has slits 53A, 53Bssc, 5
3D, 53K are provided discontinuously, and the! Jy)53
A to 53K are bent as shown in FIG. 13, and a box-shaped cover 53 is formed by inserting and engaging the tongue pieces 53Gi at the other end into the square holes 53F at both ends. In addition, square hole 63HK
The lever 27 for detecting abnormal vibrations of the outer tank is inserted therethrough, and the round hole 53Hfd screw 61 and the round hole eisK are the insertion holes for the screw 62. The square hole 53L is the tongue piece 5o of the board 50.
D, and the flat part 53M is inserted into the microswitch 4.
It covers the terminal portion 44B of No. 4. -! , flat surface portion 53N
By interposing it between the rear mounting portions of the top cover 26 on the substrate 60, it also has the effect of preventing enamel cracking due to tightening of the screws 53 when the top cover is finished with enamel. In this way, a waterproof cover containing the switch structure is constructed by carefully bending the 7-tooth-shaped member, and the material is used to provide an integrated lid switch cover that is inexpensive, reliable, and easy to install without using expensive molded parts. can.

Effects of the Invention As is clear from the examples above, the electric washing machine of the present invention can provide an electric washing machine with stable performance by attaching a lid switch mechanism with excellent waterproofness to the top cover. It is something.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a front panel type fully automatic washing machine according to an embodiment of the present invention, Fig. 2 is a plan view when the top cover of Fig. 1 is completely removed, and Fig. 3 shows the arrangement of attachment parts on the top cover. FIG. 4 is a perspective view from the rear of FIG. 1, FIG. 5 is a sectional plan view of the right front mounting part of FIG. 1, and FIG.
The figures are a sectional view taken along the line X-X of Fig. 6, Fig. 7 is an enlarged exploded perspective view of the mounting bracket, Fig. 8 is a sectional view of the mounting bracket, Fig. 9 is an exploded perspective view of the lid switch, and Fig. 9 is an exploded perspective view of the lid switch. Figure 10 is a sectional view of the lid switch installation, Figure 11 is a plan view of the top cover from Figure 10 with the top surface removed, Figure 12 is a developed view of the cover, and Figure 13 is a perspective view of the cover shown in Figure 12. be. 4... Outer tank, 24... Lid, 25...
... Lid switch, 26 ... Top cover, 53
...Waterproof cover. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 26p+ Figure 4 Figure 5 Figure 6 Figure 6 δ ~ -)

Claims (1)

[Claims] A lid switch mechanism that operates by opening and closing a lid provided on the top cover and detecting abnormal vibrations in the outer tank is attached to the top cover, and the lid switch mechanism is surrounded by a waterproof cover. washing machine.