JPH0749836B2 - Electromagnetic drain valve device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic drainage valve device for a washing machine used in general households, and more particularly to an electromagnet mounting structure.

2. Description of the Related Art In the conventional electromagnet mounting of an electromagnetic drainage valve, as shown in FIG. 7, a mounting portion 16 provided at a lower portion of a core crimping bracket 15 is provided with a fixing tool 18 to which a buffer spring 17 is attached. It was fixed on the cock lid 19.

Problems to be Solved by the Invention In the conventional configuration, the electromagnet 20 is placed on the buffer spring 17. Therefore, the electromagnet 20 works during drainage, and the stroke for pulling up the movable iron core 21 is determined by the force of the buffer spring 17 and the balance with the cock spring 24 pushing down the cock packing 23 in the cock frame 22, The stroke variation was large due to the variation of parts, which caused the variation of the drainage time to be large.

Further, the buffer spring 17 was originally intended to protect the electromagnet 20 from vibration and shock during transportation, and at the same time, to alleviate the shock during suction. However, since it is a spring, the buffer spring 17 that receives a large impact when the product is dropped is largely deformed, and a bar-shaped spring support rod provided on the cock lid 19 is provided.
In many cases, this support rod 25 was destroyed when hitting 25. As a countermeasure, it is possible to increase the spring constant of the buffer spring 17, but this time, the shock during suction cannot be sufficiently absorbed, and a large shock noise is generated during suction, which is not a good measure.

On the other hand, as for the impact sound at the time of suction, since it is a spring, it has no sound-proof effect, particularly no sound-absorbing effect, but only the sound-proof effect by suppressing the vibration caused by the shock at the time of suction. Therefore, a sound that was rather harsh was generated during suction.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electromagnetic drainage valve device which has a structure that is strong and is not damaged by a large impact, such as a product drop, and which produces a small impact sound when an electromagnet is attracted. It is also an object of the present invention to enable stabilization of the cock stroke at the same time.

Means for Solving the Problems In order to solve the above problems, the present invention extends a part of a set of core crimping brackets for holding the core of an electromagnet from both sides, The structure is such that the core crimping bracket is mounted so that the mounting portions are formed by bending into L-shapes to form the mounting portions.

Action With this configuration, even if a force acts in the weak direction (wide direction) in which the electromagnet is attached, the L-shaped side wall surfaces of the attachment portion face each other and receive the force, which makes the structure strong.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 6. In the figure, 1 is a tank, and a washing machine 1a
And the dehydration tank 1b. Reference numeral 2 denotes a cock frame connected to the bottom portion of the tank 1, which holds the cock packing 7 in a watertight manner by fitting the cock lid 3 with the cock lid 3 (not shown). An electromagnet 4 is attached to the upper part of the cock lid 3, and when the power is turned on and off, the movable iron core 5 is moved up and down, and a spring that is interlocked with the movable iron core 5.
The cock packing 7 is moved up and down through the cock rod 6 that houses 6a to control the drainage operation.

The structure of the electromagnet 4 will be described in detail. Both sides of the core 8 of the electromagnet 4 are crimped by brackets 9 for crimping the core. The caulking bracket 9 has a substantially triangular extension 9a on the side surface, and the lower surface of the extension 9a is bent in an L shape toward the core 8 side to form a mounting portion 9b. A mounting through hole 10 is provided in the mounting portion 9b. Therefore, when the mounting portion 9b of the electromagnet after caulking is viewed from above, the extension portion 9a and the mounting portion 9b are in a positional relationship of facing each other, as shown in FIG.

On the other hand, the attachment of the electromagnet 4 will be described.
Is composed of a cylindrical portion 11a that can be inserted into the mounting through hole 10, a substantially cylindrical receiving portion 11b having a diameter larger than that of the cylindrical portion for receiving the electromagnet 4, and a washer 11c attached to the lower surface of the receiving portion 11b. The washer 12 and the stepped screw 13 through the cushioning rubber 11 and the cock lid 3
Is mounted on a mounting seat 14 provided on the upper part of the. Also,
As shown in FIG. 6, the dimensional relationship between the cushioning rubber 11 and the stepped screw 13 is A> B, where A is the dimension from the upper end of the cushioning rubber 11 to the upper surface of the washer 11c and stepped dimension B of the stepped screw 13 is A> B. Has become.

In the above structure, the arrow X shown in FIG. 3 and FIG.
When the directional force is applied to the electromagnet 4, the extension portion 9a that is difficult to bend
It becomes stronger because there is a side of. On the other hand, in the force in the opposite direction, the force in the direction of the arrow Y is strong because the opposite side of the extension 9a exists. Further, with respect to the force in the directions of the arrows V and W, since the cross-sectional area in that direction is small, it does not cause much problem.

Further, since the electromagnet 4 is attached via the cushioning rubber 11, it has excellent vibration and soundproofing. In particular, the effect can be further enhanced by making the material of the cushioning rubber 11 excellent in the vibration and soundproof effect.

Also, the dimension A from the upper end of the cushioning rubber 11 to the upper surface of the washer 11c
Is larger than the step size B of the stepped screw 13, the cylindrical part 11a of the buffer rubber 11 slightly bulges outward as shown in FIG. 6 (b) when the electromagnet 4 is attached. It prevents it from coming out upward. Besides, stepped screws 13
Since the position of the electromagnet 4 is determined by the step portion, the cock stroke becomes constant and the drainage time becomes stable.

EFFECTS OF THE INVENTION As described above, according to the present invention, since the electromagnet is attached via the cushion rubber, the soundproofing / vibrationproofing effect is enhanced,
It is possible to mitigate the impact noise when attracting the electromagnet. Further, by making the mounting portion L-shaped and facing the side wall surface, a mounting structure that is strong against external force can be provided, and damage or the like due to impact during transportation can be prevented. In addition, variations in cock stroke are reduced, and drainage time is stable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an electromagnetic drainage valve device according to an embodiment of the present invention, FIG. 2 is a perspective view of a washing machine using the electromagnetic drainage valve when a rear opening is performed, and FIG. 3 is a perspective view of a core caulking bracket. Fig. 4 is a plan view of an electromagnet, Fig. 5 is an exploded perspective view of an essential part of the electromagnetic drainage valve device, Fig. 6 (a) is a sectional view of a mounting part before tightening a stepped screw, and Fig. 6 (b). ) Is a sectional view of a mounting portion when a stepped screw is tightened, and FIG. 7 is an enlarged sectional view of a main portion of a conventional electromagnetic drainage valve device. 4 ... electromagnet, 9 ... core caulking bracket, 9a ...
Extension part, 9b ... Mounting part.

Claims (1)

[Claims] 1. A part of a set of core crimping brackets for sandwiching the core of the drain valve electromagnet from both sides is extended to the outside,
An electromagnetic drainage valve device in which the lower surface of the extension portion is bent into an L shape to form an attachment portion, and the core caulking brackets are attached so that the attachment portions are opposed to each other.