JPS5948524B2 - Anti-vibration support device for electromagnetic solenoid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in a vibration-proof support device for an electromagnetic solenoid.

[Background of the invention]

In household appliances such as electric washing machines, there is a strong desire to reduce vibration and noise, and there is also a desire to reduce the noise of electromagnetic solenoids themselves.

For example, in the case of a fully automatic whirlpool washing machine, the electromagnetic solenoid is used as a drain valve that controls the draining of washing liquid and rinsing liquid,
It operates the clutch that switches between washing and spin-drying power, and the brake that operates when washing and spin-drying are completed.
Since it makes a lot of noise during operation, it is supported through anti-vibration rubber, but it does not provide sufficient cushioning force. Furthermore, in order to obtain a sufficient shock absorbing force, simply making the vibration isolating rubber a flexible support is insufficient in terms of strength and cannot be used in household products such as electric washing machines. [Object of the Invention] In view of the above-mentioned drawbacks, an object of the present invention is to provide a vibration-proof support device for an electromagnetic solenoid that can reduce noise during operation by effectively supporting the electromagnetic solenoid in a vibration-proof manner. It is in.

[Summary of the invention]

The gist of the present invention is to provide a plunger, an electromagnetic solenoid into which the plunger is loosely fitted, a holding plate that holds the electromagnetic solenoid, a support plate that supports this holding plate, and a An electromagnetic solenoid comprising at least two elastic members disposed at positions perpendicular to a suction direction of the solenoid, and both sides of a bobbin of the electromagnetic solenoid are sandwiched and elastically supported by the two elastic members. In the vibration isolating support device, a bent portion of the elastic member that supports the outer side in the suction direction of the electromagnetic solenoid is provided on the retaining plate, and a buffer portion consisting of a hole or unevenness that buffers in the suction direction of the electromagnetic solenoid is provided. , provided in the elastic member.

[Embodiments of the invention]

Hereinafter, one embodiment of the electromagnetic solenoid vibration isolation support device of the present invention will be described.

In FIG. 1, a dewatering tank 4 is disposed concentrically within a water receiving tank 3 suspended within an outer frame 1 by an anti-vibration support device 2. Ru. A pulsator 5 is attached to the center of the bottom of the dehydration tank 4. Attached to the bottom surface of the water receiving tank 3 are a pulsator 5 during washing, a motor 6 for driving the dehydration tank 4 during dehydration, and a clutch 7 for switching the power for washing and dehydration. During washing, rinsing, and rinsing, the pulsator 5 is driven to rotate and the laundry 8 is washed. During dehydration, the dehydration tank 4 is driven to rotate at high speed to remove water from the laundry 8. During this spin-drying rotation, the laundry 8 is not evenly distributed in the spin-drying tank 4, but is usually distributed unevenly as shown in FIG.

This cannot be avoided because the cycle of washing → rinsing → spin-drying is automatically controlled by the timer 9, so that the unevenness of the laundry 8 during washing and rinsing directly transfers to spin-drying. Therefore, a balance ring 10 is attached to the upper part of the spin-drying tank 4 in order to correct the unbalance caused by the bias of the laundry 8 during the spin-drying rotation. The discharge port 11 of the water receiving tank 3 is connected to the inlet port 12a of the drain valve 12.

The drain valve 12 is connected to a plunger 14 of an electromagnetic solenoid 13 using a lever operation part 15. The electromagnetic solenoid 13 is attached to a support plate 16 fixed to the outer bottom surface of the water receiving tank 3. The lever operation section 15 has a protrusion 15a, and is operated by the operation force of the electromagnetic solenoid 13.
Simultaneously with the operation of the drain valve 12, a clutch lever 7 for switching between clutch and brake is driven. Since an impact sound is generated when the electromagnetic solenoid 13 operates, the electromagnetic solenoid 13 is supported in a vibration-proof manner. As shown in FIG. 2, the electromagnetic solenoid 13 includes
A plunger 14 is loosely fitted. Electromagnetic solenoid 13
Two side plates 18 and 18a are provided on the sides of the electromagnetic solenoid 13 and at positions perpendicular to the suction direction x of the electromagnetic solenoid 13. A holding plate 19 that holds the electromagnetic solenoid 13 is fixed to the support plate 16 with screws or the like. An elastic member 20 made of rubber or the like is provided between the side plates 18, 18a and the holding plate 19. The elastic member 20 causes the electromagnetic solenoid 13 to
Both sides of the bobbin 21 are clamped and elastically supported.

The elastic member 20 is formed with a buffer portion 20a consisting of a hole or unevenness that buffers the electromagnetic solenoid 13 in the suction direction x. As shown in FIGS. 3 and 4, the elastic member 20 supports the bobbin 21, includes a buffer section 20a consisting of a large number of holes, a through hole 20b for passing the current-carrying protrusion 21a of the bobbin 21, and It also has an uneven portion 20C for buffering in the suction direction x.

The holding plate 19 is integrally formed with a bent portion 19a that supports the outer side of the elastic member 20 in the suction direction of the electromagnetic solenoid 13.

With the above configuration, the elastic member 20 is reliably held by the holding plate 19.

Moreover, since the electromagnetic solenoid 13 is entirely elastically supported by holding the bobbin 21 between the elastic members 20, vibrations during operation are effectively absorbed.
Further, since the elastic member 20 is formed with a buffer portion 20a such as a hole, it expands and contracts when the electromagnetic solenoid 13 is operated, and can more effectively absorb vibrations of the electromagnetic solenoid 3. In addition, a buffer portion 20 such as a hole is provided on the entire surface of the elastic member 20.
If a is provided, the dimensional error including the elastic member 20 when inserting the electromagnetic solenoid 13 into the holding plate 19 can be made larger than when there is no buffer part 20a such as a hole, and it is easy to manufacture. Since it is easy to assemble, it is possible to improve productivity.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a vibration-proof support device for an electromagnetic solenoid that can improve productivity and reduce noise during operation of the electromagnetic solenoid. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a fully automatic washing machine showing an embodiment of the electromagnetic solenoid vibration isolation support device of the present invention, FIG. Figure 3 is a plan view of the main parts, Figure 4 is I-111 in Figure 3.
FIG. 13... Electromagnetic solenoid, 14... Plunger, 1
6... Support plate, 18, 18a... Side plate, 19...
Holding plate, 19a... bending part, 20... elastic member,
20a...Buffer part, 21...Bobbin.

Claims (1)

[Claims] 1 A plunger 14, an electromagnetic solenoid 13 into which the plunger 14 is loosely fitted, a holding plate 19 that holds this electromagnetic solenoid 13, a support plate 16 that supports this holding plate 19, and a side of the electromagnetic solenoid 13. and at least two elastic members 20 provided at positions perpendicular to the suction direction of the electromagnetic solenoid 13, and both sides of the bobbin 21 of the electromagnetic solenoid 13 are sandwiched between the two elastic members 20 to provide elasticity. In the vibration-proof support device for an electromagnetic solenoid, the elastic member 20 includes:
A bent portion 19a that supports the outside in the suction direction of the electromagnetic solenoid 13 is provided on the retaining plate 19, and a buffer portion 20a consisting of a hole or unevenness that buffers the electromagnetic solenoid 13 in the suction direction is provided on the elastic member 20. A vibration-proof support device for an electromagnetic solenoid.