JPS58138494A - Washing machine combining dehydration - 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 an improvement in a structure for installing a drain cock in a dehydrating/washing machine, and an object of the present invention is to reliably weld the main body of the drain cock to the bottom of the water receptacle.

Conventionally, a dehydrating and washing machine has a configuration as shown in Fig. 1, in which 1 is an outer box, 2 is a top lid 4 placed and fixed on the top of the outer box 1, and 3 is placed on the top lid 2. A fixed operation box 4 is an electrical unit provided inside the operation box 3 to control the operation of the washing machine. Reference numeral 5 denotes a bottomed cylindrical water receptacle provided inside the outer box 1, and a cover 6 is disposed on the annular dewatering receptacle at the upper opening. Reference numeral 7 denotes a bottomed, substantially cylindrical inner tank rotatably provided in the water receiver 6, which has a large number of dewatering holes 8 in its side wall, and has a substantially donut-shaped balance ring 9 at its upper opening end. 1o is a pulsator rotatably provided at the inner bottom of the inner tank 7. Reference numeral 11 denotes a motor provided at the lower part of the water receiver, and reference numeral 12 denotes a mechanical unit, which includes a clutch mechanism, a brake device, etc. that switches between the dehydration rotation of the inner tank 7 during dehydration and the rotation of the pulsator 1o during washing and rinsing. has. 13t/'i is a V-belt that transmits the power of the motor 11 to the mechanism section 12 via a pulley. Reference numeral 14 denotes a reinforcing plate for attaching and supporting the motor 11 and the mechanism section 12, which is fixed to the bottom of the water tray 6 and suspended from the outer box 1 via a vibration isolator 16 and a rod 16.

Reference numeral 17 denotes a drain cock for discharging the water in the water receiver 6, which leads the water out of the machine through a drain hose 18. 19 is outer box 1
The height can be adjusted using the adjustable legs provided at the bottom of the washing machine to eliminate wobbling when it is installed on the bottom of the washing machine. 2
0 is a leg that does not have an adjustment function, 21 is a reinforcing plate 14 and a water receiver 5
This is a bolt that fixes it to the bottom.

Fig. 2 shows the structure near the conventional drain cock 17. The body 23 is a 7L magnet attached to the bottom of the water receiver 6 and the reinforcing plate 14. When energized, the plunger (adsorption plate) 24 moves in the direction of arrow A. is adsorbed.

One end of a cock joint 25 is connected to the plunger 24 with a split bottle 26, and the other end of the cock joint 25 is linked to a drain cock 17. When the electromagnetic magnet 23 is energized, the water extraction cock 171 (f) is opened, and energized and closed.

l'lj' +jl-: A stopper 27 is provided in the middle of the Konokun I India 25, and the clutch lever 28 is operated in accordance with the operation of the electromagnetic magnet 23.

The clutch lever 28 is interlocked with a brake lever ~29, and further interlocked with a brake bunt 30.

When the electromagnet 23 is energized, the brake band 30
releases the bias and does not restrict the rotation of the inner tank 7.

When energized, the brake shoe 33, which is bonded to the brake bunt 30, is pressed against the outer periphery of the brake wheel 32, which is integrally attached to the main shaft 31, and the rotation of the inner tank 7 is stopped.

Figures 3 and 4 show the details of the structure of the drain cock 17, and the outer bottom of the water receiver 6 made of synthetic resin, for example polypropylene, has a cylindrical drain port 34 and a drain cock. 17. Boss 35 for installation, and drain cock 17
The receiver has ribs 36 integrally formed to protrude. 37
is a leg part formed integrally with the main body 17a of the drain cock 17, and a screw 38 for attaching the screw y is arranged in the center part.

A well 39 (l) made of Go 11 in the main body 17a of the drain cock 17
−[, tensile joint 1 (combined with 40, total tensile length with 4
0 and the cock joint 25 are connected by a cock spring 41, and the valve 39 is opened and closed by the operation of the electromagnetic magnet 23 mentioned above.

When the electromagnet 23 is not energized, the rubber valve 39 is pressed in the closing direction by the F compression spring 42 to prevent water leakage.

Reference numeral 43 denotes a cross-section, which serves as a guide for the compression spring 42.

The washing water in the water tray 6- flows from arrow B to arrow C and is drained.

The drain port 34 is fitted into the inlet port 44 of the main body 17a of the drain cock 17, and is further sealed with an adhesive.

Further, the receiver for receiving the drain cock 17 is provided with two ribs 36 spaced apart from each other, and a boss 35 for attaching the drain cock protrudes from inside thereof.

A pilot hole 46 is provided in the boss 35 so that a screw can be screwed into the boss 35.

According to the structure of the above-mentioned installation of the drain cock 17, the legs 37 of the drain cock 17 were tightened and fixed with metal screws 38, so the height dimension was sufficient to absorb the length of the screws 38. It is necessary to provide a boss 35 on the outer periphery of the bottom of the water pan 6, and a large amount of molding material for the water pan 6 is required.

Furthermore, there is a pilot hole 4 inside this post 36 that fits the screw 38.
6, and if the diameter of the pilot hole 46 is large, the tightening torque will be insufficient, and if the pilot hole 46 is small, the tightening torque will be too high, destroying the entire post 36. This phenomenon occurs. Furthermore, the hardness of the material of the water receiver 6 that forms the boss 36, for example, polypropylene resin itself, also affects the selection of the material to determine the tightening force of the screw 38. Destroyed, boss 3
6. When forming the ribs 36 etc. of the bridge, it is necessary to add a complex mold shape with many grooves to the resin mold that forms the water reservoir 6. It is necessary to arrange a pin for forming the pilot hole 45 in a deep place, which inevitably complicates the mold structure.

The present invention solves the above-mentioned conventional problems, and embodiments thereof will be described below. In FIGS. 6 and 6, the main body 17a of the drain cock 17 is made of synthetic resin such as polypropylene, and a part of the drain cock 17 has a leg portion 37 that has a forked shape.
．． 37 are integrally formed.

Reference numeral 46 denotes a convex portion protruding from the outer bottom of the water pan 6 made of synthetic resin, and the inside thereof communicates with the inside of the water pan 6. Therefore, the thickness of the wall portion of the convex portion 46 is equal to the circumference of the water pan 6. Approximately 1.
? ] etc. 47 is the outer bottom surface of the convex portion 46, which includes:
A guide rib 48 and a guide pin 49 are integrated with the convex portion 46.
is formed protrudingly.

The end surfaces of the legs 37, 37 run along the 011i guide lip 48, and the guide pin 49 is inserted into a hole 50.60 formed in the leg 37.37. Reference numeral 61 denotes a rivet-like visible part formed by melting the end of the guide pin 49, and is shaped into the shape Ij12 using ultrasonic heating, hot plate heating, or the like.

An inlet [ ] 44 formed integrally with the main body 17 & of the water control cock 17 is fluid-tightly inserted into the cylindrical drain port 34 formed integrally with the water receiver 6 .

FIG. 7 shows the guide pin 49 and the main body 17a of the drain cock 17.
The figure shows the process of forming the welded part with the leg 37, where the length of the guide pin 49 is d, it is inserted into the hole 60 of the leg 37, and the plate thickness of the leg 37 is b, and a) and b. For this reason, the tip of the guide pin 49 is made to protrude. Then, the protruding end is melted by the tip concave portion 52a of a welding machine 62 such as an ultrasonic welding machine, forming a rivet-shaped head 61 as described above, and supporting the drain cock 17.

63 is a thick part formed integrally with the water receiver 6 on the inner surface of the bottom of the water receiver 6 corresponding to the guide pin 49, and its thickness C is thicker than the thickness d of the bottom other than the thick part 63. . e indicates the diameter of the thick portion 63, and it goes without saying that the guide pin 49 corresponds to a substantially circular range based on the diameter e.

Note that the amount indicates the diameter dimension of the guide pin 49.

In FIG. 8, the length of the guide pin 49 is the same as the plate thickness of the leg 37, and the guide pin 49 is welded using a welding machine 62 that has a protrusion s2b having the same shape as the guide pin 49. The resin is melted at the protrusion 62b and poured into the abutment surface between the leg 37 and the outer bottom surface 47 of the convex part 46, and the water receiver 6 and the leg 37 are joined by the welded part 64. Thick part 6
3 approximately corresponds to the formation range of the welded portion 64. q indicates the diameter dimension of the protruding portion 62b, and is f''-, q.

FIG. 9 shows a state in which the leg 37 of the drain cock 17 is regulated in position by the guide rib 48 without providing a guide pin on the side of the water receiver 6.
to act on. The position where this is applied is approximately the same as the thick part 63, and the resin for forming the leg 37 applied thereby is applied to the contact surface between the leg 37 and the outer bottom surface 47 of the convex part 46, as in FIG. The welded portion 64 is formed by flowing into the welded portion 64 .

υF, as shown in FIGS. 7, 8, and 9, whether or not the guide pin 49 is included, there is a head 61 (considered as a welded part) on the inner surface of the bottom of the water receiver 6. , welded part 6
Since the thick portion 63 is formed in a range that substantially corresponds to 4,
It is widely used because of its high reliability in terms of welding strength and water leakage prevention in the six water receivers.

That is, according to the above-described configuration, there is no need to use screws to attach the drain cock 17, and the molding surface of the water receiver 6 and the main body 17a of the drain cock 17 and the working surface of the connection reservoir thereof are excellent. The conditions for welding as seen in this embodiment require that both the water receiver 6 and the main body 17a of the drain cock be made of a weldable resin material such as polypropylene. Moreover, a drawback of resin materials is the problem of thermal shrinkage, and in particular, as the wall thickness increases, flatness tends to be difficult to achieve. Therefore, it is necessary to make the mounting surface that requires flatness thin, but if it is made thin, not only will the strength not be obtained, but the protruding part at the tip of the welding machine 62 will become thinner, as shown in FIGS. 8 and 9. 62b is pushed into the leg 37 of the drain cock and welded, due to the variation in the push-in position,
It is assumed that the protruding portion 62b reaches the mounting surface at the bottom of the water pan 6, and in some cases, breaks through the bottom of the water pan 6.

However, as shown in FIGS. 8 and 9, a thick part 63 is formed in the bottom inward direction of the water pan 5, in a range that substantially corresponds to the welded part 54, and the water pan other than the thick part 63 is 5. By making the bottom part thinner than the thick wall part 63, when the protruding part 52b at the tip of the welding machine 62 is pushed into the leg 37 for welding, there is sufficient margin in the pushing direction dimension, and water is removed. The washing water in the water tray does not leak out by breaking through the bottom of the tray 6.

Further, the thick portion 63 is formed locally, and the thick portion 63 is formed locally.
In the other parts, it is possible to make the wall thinner so that flatness can be achieved, and the leg 37 can be reliably joined.

As shown in FIG. 7, even when the tip of the guide pin 49 is changed to a rivet-shaped head 51 using a welding machine 62, the strength of the guide pin 49 itself, especially the strength against falling, improves as the wall thickness at the base becomes thicker. Therefore, providing the thick portion 63 as shown in 1: M+' is effective in this respect.

In addition, in the embodiment, the forming range of the thick part approximately corresponds to the forming range of the welded part, but the welded part herein includes the head 61 shown in FIGS. 6 and 7. , and approximately corresponding means that one is somewhat larger than the other,
It also includes Izuo if it is somewhat small. In particular, it goes without saying that forming the thick portion over a wide range is superior in terms of strength and water leakage prevention, but it is necessary to fully consider the flatness depending on the size of the wall thickness.

As described above, according to the present invention, by taking into account the local dimensions of the opposite bank at the bottom of the water receptacle, the drain cock can be accurately attached by welding with great strength and water leakage prevention. be able to.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a conventional general dehydrating and washing machine;
The diagram shows an electromagnetic magnet and the brake operated by it.
, a horizontal cross-sectional view showing the relationship with the drain cock, Fig. 3 is a vertical cross-sectional view showing the structure of the installation of the drain cock, Fig. 4 is a perspective view of main parts showing the shape of the outer bottom surface of the water receiver, and Fig. 6 is a vertical cross-sectional view showing the structure of the drain cock. The installation of the drain cock in the embodiment of the present invention is shown in an exploded perspective view showing the structure.
Figure 6 is a vertical sectional view of the same, Figures 7, 8 and 9 are for explaining the process of installing the drain cock, and each figure is
is a longitudinal sectional view before welding and fixing, and each figure (b) is a longitudinal sectional view after welding and fixing. 6... Water receiver, 7... Inner tank, 10... Pulsator, 17... Drain cock, 17a...
...Main body, 37...Legs, 49...Guide bin, 61...Head, 63...Thick part, 64... ...Welded area. Name of agent: Patent attorney Toshio Nakao and one other person II
Figure 12 Figure 3 11L3 Figure 14 Figure a7 Figure /A1 6 Figure 8 (7111+ 1/A9 Figure (A)

Claims (1)

[Claims] It is equipped with an inner tank with a pulsator on the inner bottom that rotates during washing, and a synthetic resin water receiver in which the inner tank is rotatably installed for dewatering. A dehydrating/washing machine in which a welded portion for welding and fixing is formed, and a local portion of the water tray bottom that substantially corresponds to the welded portion is thicker than other portions of the water tray bottom.