JPS645852Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a soundproof and moisture-proof electro-magnetic device having an electromagnet with a movable iron core.

Technical background of the invention Conventionally, for example, a washing machine with a dehydrating function has been equipped with an electromagnet device that controls the opening/closing operation of a drain valve and the activation/release of a brake device. The movable iron core is attracted and moved by the electromagnetic attraction action of the electromagnet, and after the movement, the movable iron core is attracted and held by bringing the contact plate portion of the movable iron core into close contact with the end face of the electromagnet. The rod of the drain valve and the lever of the brake device, which are the loads, are connected to the connecting part of the movable core so that they operate in conjunction with the movable core, and an electromagnetic device is used to control the drain valve and the brake device in a predetermined manner. It is becoming like this.

Problems with the Background Art The conventional electromagnet devices described above generate noise such as the collision sound between the movable core and the electromagnet and the buzzing sound of the electromagnet during operation, and also have problems such as being susceptible to moisture and rusting. It was hot.

Purpose of the invention Therefore, the purpose of the present invention is to provide a soundproof and moisture-proof electromagnetic device that can prevent noise and eliminate the influence of moisture.

Summary of the invention The present invention is characterized in that the electromagnet and the movable core are entirely covered with a protective cover made of an elastic material and a plug that closes the opening of the protective cover.

Embodiment of the Invention Hereinafter, one embodiment of the invention will be described by applying the present invention to an electromagnet device for a washing machine with dehydrating function. First, in FIG. 1, the schematic structure of a washing machine with dehydrating function will be described. 1
is an outer box in which a water receiving tank 2 is disposed via an elastic suspension mechanism 3 and a support substrate 4.
A rotating tank 5 serving as a washing and dehydrating tank is disposed within the water receiving tank 2, and a pulsator 6 is disposed within the rotating tub 5. A drive motor 7 is attached to the support substrate 4, and the rotational power of the drive motor 7 is transmitted to the pulsator 6 or the rotating tank 5 via a belt transmission mechanism 8 and a clutch mechanism 9. Reference numeral 10 denotes a drain valve, which is attached to the support substrate 4 so as to be interposed in the middle of the drain channel 11. Reference numeral 12 denotes a brake device, which has a well-known construction as shown in FIGS. 2 and 3. That is, 1
3 is a drum attached to the dewatering shaft 14, 15 is a brake band attached to this drum 13, 16
17 is a brake lever whose one end is pivoted so that it can be engaged with and disengaged from the pawl 15a of the brake band 15; 17 is a brake lever that rotates the brake lever 16 in the direction of engagement with the pawl 15a (in the direction of arrow A in FIG. 3); It is a spring that strengthens the body.
Now, 18 is an electromagnet device, which is constructed as follows. That is, in FIGS. 4 and 5, 1
Reference numeral 9 denotes an electromagnet, which is a well-known electromagnet consisting of an electromagnetic coil 20 and a fixed core (not shown) provided inside the electromagnet. Reference numeral 21 denotes a movable iron core, which is movably attached to the electromagnet 19, and at its tip is formed a patch plate part 22 that projects upward and downward, and at the tip of this patch plate part 22 is a movable iron core. Plate-shaped connecting parts 2 for connecting loads from both side edges
3 and 23 are provided protrudingly. Reference numeral 24 denotes a protective cover formed by integrally molding an elastic material such as rubber, and this includes a rectangular bag-shaped main body portion 25 with a telescopic bellows portion 26 extending therefrom.
A slit-shaped fitting hole 27 is formed in each edge of the opening 24a of the four openings 24a. Reference numeral 28 denotes a lid body shaped like a rectangular plate and formed in a size that can close the opening 24a, and has two vertically elongated insertion holes 29, 29 formed approximately at the center thereof, and at each edge. Fitting protrusions 30 are formed on the respective sides. The lid body 28 is attached to the movable core 21 by passing the connecting portions 23, 23 of the movable core 21 through the insertion holes 29, 29 so as to be pressed against the contact plate portion 22. . Further, the protective cover 24 has an opening 24a located at the abutment plate portion 22 of the movable core 21, so that the entire electromagnet 19 and the abutment plate portion 22 of the movable core 21 are covered.
In this case, the opening 24a of the protective cover 24 is provided so that each fitting hole 27 is fitted with each fitting protrusion 30 of the cover 28, and the opening 24a of the protective cover 24 is provided so as to surround the cover 28. and the lid body 28
It is blocked by. In this electromagnet device 18 , the connecting portion 23 projects outward from the lid 28 ; The electromagnet 19 and the protective cover 24 are surrounded by mounting fittings 31, 31 and attached to the support substrate 4. Further, a rod 32 led out from the drain valve 10 serving as a load is connected to the connecting portions 23, 23 of the movable iron core 21.
are connected to each other via a pin 33, and a stop joint 34 is attached to the rod 32 in an upright manner with a screw 34a. They are brought into contact via a protective tube 35 made of an insulator.

The electromagnet device 18 is activated during dewatering, that is, when the electromagnet 19 is energized, its electromagnetic attraction action attracts and moves the movable core 21 in the direction of arrow B in FIG. Hold the contact plate part 22 of the movable iron core 21 by suction,
With this, the rod 32 is moved in the direction of arrow C in Fig. 3 (arrow B
At the same time, the other end of the brake lever 16 is rotated in the opposite direction of arrow A, thereby opening the drain valve 10 and releasing the braking state of the brake device 12.

According to this embodiment having the above configuration, the following effects can be obtained. That is, when the movable core 21 is attracted, a collision sound is generated between it and the electromagnet 19, but the electromagnet 19 and the movable core 21 are not protected by the protective cover 2.
4 and the lid body 28, it is possible to prevent the leakage of the collision sound, and since the protective cover 24 is made of an elastic material, it also has a sound absorbing effect. Due to the closed configuration,
A great air damper effect can also be expected, which can contribute to the reduction of the above-mentioned collision noise, and can achieve soundproofing of the collision noise as a whole. In addition, since the electromagnet 19 is entirely surrounded by the protective cover 24, it is possible to prevent the humming noise generated in the electromagnet 19 from leaking out, and therefore the noise prevention effect is great. Furthermore, since the electromagnet 19 and the movable iron core 21 are sealed with the protective cover 24 and the lid 28, the influence of moisture can be prevented, and the occurrence of rust can also be prevented. Furthermore, since the entire electromagnet 19 is surrounded by the protective cover 24, there is no risk of injury from the edges of the electromagnet 19 during assembly, and the entire electromagnet 19 can be protected.
Even if a situation occurs where the electromagnetic coil 20 burns out, further fire can be prevented.

Furthermore, according to this embodiment having the above configuration,
The electromagnet 19 is surrounded by the protective cover 24, and the insertion hole 29 of the cover plate 28 is inserted into the connecting part 23 to arrange it on the movable core 21, and the cover body 28 and the protective cover 2
4, and the fitting protrusion 30 and the fitting hole 27.
Since the opening 24a is closed by the lid 28, the electromagnet device 18 can be easily assembled. In addition, in the movable iron core 21, a drain valve 10, a brake device 12
The connecting portion 23 connected to the load is connected to the lid body 28.
Since it is configured to be exposed outside, these drain valves 1
0. Connection with the brake device 12 can be easily performed.

In the above embodiment, the present invention is applied to an electromagnetic device for a washing machine that also serves as a dehydrator, but the present invention is not limited to this and can be widely applied to electromagnetic devices in general.

In addition, the present invention can be implemented with various modifications without departing from the gist.

Effects of the invention As is clear from the above description, the invention can obtain the following effects.

() Sealed configuration with a protective cover and lid body,
By making the protective cover made of an elastic material, it is possible to block not only the collision noise between the electromagnet and the movable core, but also the humming noise of the electromagnet, and it is also expected to have an air damper effect, providing a cushioning effect to the movable core. Therefore, the occurrence of the collision sound itself can be suppressed, and overall noise can be largely prevented.

() The above-mentioned sealed structure can prevent the electromagnet and the movable core from being exposed to moisture, and thus can also prevent rust on these as a whole.

() Since the entire electromagnet is surrounded by a protective cover, there is no risk of injury from the edges of the electromagnet during assembly, and furthermore, in the event that the electromagnet burns out, further fire can be prevented, improving safety. can be achieved.

() Surround the electromagnet with a protective cover that is open on one side, insert the insertion hole of the lid body into the connecting part, arrange it on the movable iron core, and connect the lid body and the opening of the protective cover 4 with the fitting protrusion. The cover plate is fixed by fitting into the fitting hole, and the opening is closed by the cover plate.
The electromagnet device can be easily assembled.

() Since the connecting portion connected to the load in the movable core is exposed outside the lid, the connecting portion and the load can be easily connected at the outer portions of the protective cover and the lid.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a vertical side view of the entire dehydrating/washing machine, Fig. 2 is an enlarged longitudinal side view of the brake device section, and Fig. 3 is a plan view of the brake device and electromagnet device section. 4 are longitudinal sectional side views of the same portion, and FIG. 5 is an exploded perspective view of the same portion. In the figure, 10 is a drain valve (load), 12 is a brake device (load), 16 is a brake lever, 18 is an electromagnet device, 19 is an electromagnet, 21 is a movable iron core, 22
2 is the contact plate part, 23 is the connecting part, 24 is the protective cover, 2
4a is an opening, 27 is a fitting hole, 28 is a lid body, 29
30 is an insertion hole, 30 is a fitting protrusion, and 32 is a rod.

Claims (1)

[Scope of utility model registration request] an electromagnet; and a movable iron core that is movable relative to the electromagnet and has an overhanging contact plate at its tip and a plate-like connection part for connecting a load at a portion beyond the contact plate. , a protective cover made of an elastic material that is shaped like a bag and has a slit-like fitting hole formed at the edge of the opening, and a protective cover that is large enough to close the opening of the protective cover and is approximately in the center. a lid body having an insertion hole through which the connecting part is inserted and a fitting protrusion formed on a peripheral edge thereof, the opening of which is connected to the abutting plate part of the movable iron core; The lid body is located at a portion to surround the entire electromagnet and a portion of the movable iron core up to the abutment plate portion, and the lid body is pressed against the abutment plate portion by inserting the insertion hole into the connecting portion. is provided on the movable iron core, and the fitting hole of the protective cover is fitted to the fitting protrusion of the lid, so that the opening of the protective cover is closed by the lid. Shape electromagnet device.