JPS592796A - Solenoid case of 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 The present invention relates to a solenoid that simultaneously operates a brake device, a clutch device, and a drain valve of a washing tub.

Conventionally, in a single-tub dehydrating washing machine, a solenoid is used to operate the brake device of the washing/dehydrating tank, the clutch device for switching between washing and dehydrating, and the opening/closing of the drain valve. It has a structure that allows these operating bodies to be pulled, and is disposed along with the operating bodies such as the drain valve on the outside of the bottom of the outer tank that receives water. Therefore, when a current is applied to the solenoid, the armature of the solenoid is suddenly attracted and collides with the core of the solenoid, producing a loud sound, which is transmitted to the outer tank, amplified, and further A large t is transmitted to the outer frame, etc. that make up this washing machine, and is often accompanied by reverberant sound and resonance, which has been a problem with conventional washing machines.Also, in the solenoid mounting structure, It is necessary to provide a dam part 4 to reduce the transmission of sound mentioned above and to provide electrical insulation from the mounting part, and furthermore, it is necessary to prevent solenoid water from splashing from the floor to the bottom of the outer tank. Wet prevention 11- etc. also required a part.

Therefore, in recent years, the solenoid and its armature have been inserted into case A and sealed with insulating oil in case B.
A system was developed in which the part connected to the armature and the operating body such as the aforementioned drain valve were connected via an oil seal placed in the center of the case B, and the solenoid case was placed outside the bottom of the outer tank. has been done. By housing the solenoid and the armature inside the solenoid case, this prevents the collision noise caused by the electric current application mentioned above from being transmitted to the outside of the solenoid case. The aim is to reduce the collision noise between the solenoid and armature by making it work to alleviate the collision when suctioning the armature.

In a solenoid case with this type of structure, a connection is made to one wall of case A or case B for electrical communication between the solenoid winding inside the solenoid case and an operating device (times inch, etc.) outside the solenoid case. A hole is drilled through which the solenoid winding terminal is exposed to the outside of the solenoid case.

Some models do not have a winding terminal and the ', J-1-' sensor from the solenoid directly passes through the communication hole and communicates with the outside. The better one is selected.

After passing a terminal or a lead sensor through the communication hole, the communication hole is closed by solidifying it watertight with epoxy resin or the like.

The solenoid case of the present invention has a structure in which the winding terminal is exposed outside the solenoid case, and has a great quality effect when plugging the communication hole with the epoxy resin or the like.

We are proposing a solenoid case that can be used outside of work.

Next, the solenoid case of the present invention will be explained with reference to FIGS. 1 to 5.

Fig. 1 is a vertical cross-sectional view of an example of a single-pan centrifugal dewatering washing machine using the solenoid case of the present invention, and Fig. 2 is an expanded relationship diagram of the solenoid case, solenoid drain valve, and outer tank of the present invention. This is the P arrow in Figure 1. Figures 3 to 5
The figure is an explanatory diagram of part Q.

The structure of a single-tub centrifugal dewatering washing machine using the solenoid 1-key of the present invention and the role of the solenoid will be briefly explained with reference to FIGS. 1 and 2, and the solenoid case of the present invention will be explained with reference to FIG. explain.

In Figure 1, 1 is an outer tank that receives washing water, and 2 is an outer tank 1.
The washing and dehydration tank is installed inside, and a pulsator 3 is installed at the bottom.
A large number of small holes 4 for draining water are provided on the side wall. Reference numeral 5 denotes a flange fixed to the washing and dehydration tank 2, and is also fixed to a shaft 6 passing through the center of the flange, and when dehydrating, this shaft 6
The washing/dehydrating tank 2 is rotated by the rotation of the washing/dehydrating tank 2. 7 is a shaft for rotating the pulsator 3, which passes through the inside of the shaft 6, and the drive from the motor 8 is connected to the lower end of the shaft.
A pulley 10 is connected to the pulley 10, which is transmitted by the shaft 7 during washing, by means of a spring clutch (not shown).
The shaft 6 rotates together with the shaft 7 during dewatering.

11 is an impeller with a spring clutch fixed inside;
12 is a brake wheel fixed to the shaft 6, 13
A brake band is a brake band which can be pressed against the brake wheel 12 and detached from the band at will, and performs a braking action. 17 is outer tank 1
18 is an arm to be described later, 19 is a spring brake for preventing reverse rotation of the shaft 6, 2o is a support plate,
A mechanism case 21 for housing the outer tub 1, the motor 8, the above-mentioned washing/dehydration switching mechanism, and the like are provided, and are suspended from the outer box 23 by rods 22 and the like. 24 is a washing and dehydrating tank.”・
25 is a lint collection device, 2
6 is a drainage hose.

Next, in FIGS. 1 and 2, 14 is a solenoid,
The armature 15 is connected to a drain valve 17 via a connecting part 16.
It is connected to the. When washing, solenoid 14 and pin 3
4 is not energized, therefore, the ＼drain valve 17 is closed by the force of the spring (not shown) held by the arm 18 via the connecting fitting 16 and by the force of the spring built into the υ1 water valve 17. . Also, since the arm 18 engages the impeller 11, the built-in spring clutch does not transmit the rotation of the pulley 10 to the shaft 6, and the brake bunt '13 presses against the brake wheel/L/12 to rotate the shaft 6. The washing/dehydrating tub 2, which is fixed and fixed to the tub via the flange 5, does not rotate, and only the pulsator 3 rotates. During drainage and dewatering, the solenoid 14 is energized, the connecting fitting 16 is attracted together with the armature 16, the arm 1B is moved, and the drainage force 17 is opened. Arm 18 is connecting fitting 1
6 opens the brake band 13 and separates it from the brake wheel/v12, thereby making the shaft 6 freely rotatable. However, due to the spring brake 19, the dehydrating rotation direction (always rotating in one direction) and the opposite direction,
The shaft 6 is a mechanism that cannot rotate. Further, the arm 18 is separated from the impeller 11, and the spring clutch is in a state of transmitting the rotation of the pulley 1o to the shaft 6. When the motor 8 is energized, the washing and dewatering tub 2 rotates together with the shaft 6. It becomes a dehydration operation.

Next, the present invention will be explained in detail with reference to FIG.

A case A32 made of synthetic resin is attached to the outer surface of the bottom of the outer tank 1 by a boss 27, and the solenoid 14 is placed inside the storage case A32. Case B3
The case B30 is fixed by fitting the flange part 31 of the case B30 to the flange part 33 formed at the open end of the case A32, and the convex part 28 and the rib 2
9 fixes the solenoid 14. In addition, the solenoid winding is molded, so there is no risk of fire caused by breakage of the winding.

There are 11 insulating oils in the case A32, and 16 is an armature, which is connected to the pin 34 loosely fitted from the case A32 (1111) and the connecting fitting 16.

and is connected to the drain valve 17. 35 is a sleeve passed through the hole 1v1- on which the arm 18 is hooked. An oil seal (v36) is placed in the hole for sliding the bottle 34 in the middle of the case B30 to prevent the insulating oil from leaking. 37 is the terminal of the solenoid winding, case A
A communication hole 38 for connecting the terminal 3 provided at the terminal 32 to the outside is made of epoxy resin to prevent leakage of insulating oil.

By the way, the epoxy resin 40 of this sealant generally has a high viscosity, and the case A 32 of the communication hole 38 and the solenoid 14
Since the gap is narrow, the insulating oil tends to flow into the gap and become incompletely sealed, causing the insulating oil to leak out. FIG. 3 shows this, and FIG. 3a is an explanatory view of the Q portion, and FIG. 3 is a perspective view thereof. Therefore, in general, communication hole 38
Although the epoxy resin 40 is made to flow upward into the gap by gravity (so that the R direction is upward), much of the epoxy resin ends up being washed away. Therefore, if a rib 39 is provided around the communication hole 38 to surround it, as shown in FIG. 4, the epoxy resin 40 can be prevented from flowing out, but if too much epoxy resin 40 is poured into the communication hole 38, the terminal 37 will be damaged. If the terminal 37 is buried and the lead +a/41 cannot be connected, or if the epoxy resin 4o surrounds the terminal 37, its insulation performance and anti-tracking performance will become a problem.

Therefore, in the present invention, at least a portion of the height of the rib 39 surrounding the wiring hole 38 and provided on the outer wall of the case A32 is
It was made to be approximately the same as the root of the word.

38, it will not flow away immediately, but will flow sufficiently into the above-mentioned gap, and even if too much is poured into the area surrounded by this rib 39, it will not bury the terminal, and it will take time to pour slowly. This rib 3 overflows the lower rib and finally reaches the base of the terminal.
At 9, stay in the encircled area. Therefore, the epoxy resin 40 sufficiently flows into the gap of the communication hole 38 to eliminate leakage of insulating oil, and also prevents hindrance and frizz when connecting the black lead 41.
It's ugly.

Also, as shown in Figure 2, if the height of the rib 39 on the upper part of the solenoid case is increased so that the terminal 37 is hidden when the solenoid case is attached to the washing machine, water will not overflow from the outer tub 1 of the washing machine. It plays the role of an umbrella against water droplets falling from the roof, and provides a waterproof effect to the end-r portion.

As described above, according to the solenoid case of the present invention, it is possible to realize a solenoid case that is highly effective and has good workability by improving quality with respect to insulating oil leakage and waterproofing.

Fig. 1 is a vertical sectional view of a single-tub centrifugal dehydrating washing machine using a solenoid case showing a first embodiment of the present invention, Fig. 2 is a relationship diagram of the solenoid case and the solenoid, Fig. 3a,
b, FIGS. 4a and 4b are explanatory views of the Q part in FIG. 2 and their perspective views, and FIGS.
FIG. 2 is a partial explanatory diagram and a perspective view.

14... Solenoid, 15... Armature, 16... Connection member, 17... Drain valve, 18... Arm, 30... ...Case B132...Case A133...Flange surface, 4o...Epoxy resin.

Name of agent: Patent attorney Toshio Nakao and 1 other person
3t! A(e+ Fig. 5 (α) +R inertia

Claims (1)

[Claims] It is equipped with a washing tub in which a pulsator is arranged at the bottom and a solenoid that opens and closes a drain valve communicating with the washing tub, and the solenoid and its armature are housed in a case made of synthetic resin, and a sealing member is provided. A case B made of synthetic resin is sealed in a watertight manner to the case A with insulating oil sealed therein, and a winding terminal of a solenoid in the solenoid case is mounted on at least one wall of the case A or the case B. A communication hole that communicates with the inside of the solenoid case is bored, a lip is protruded from the case body or the outer wall of case B surrounding the communication hole, and at least a part of this rib is at the base height of the winding terminal. It almost matches the washing machine solenoid case.