JPH02126888A - Washing machine - Google Patents

Abstract

PURPOSE:To prevent the vibration generated in a motor from transmitting to a motor support member and reduce the noise by forming a motor blanket by a plate material having a sticking resin disposed between two metal plates. CONSTITUTION:Blankets 13, 14 are mounted to the both end parts of a stator 12 of a washing motor 9. The blankets 13, 14 are formed of a damping steel plate 18 of a plate material having a viscoelastic resin 17 having about 40-80mu thickness disposed between two steel plates 16, 16. The lower blanket 14 has a collar form mounting plate part 19 integrally formed, which mounting plate part 19 is placed on motor mounting bases 20, 20 provided on the motor support member 8 and fixed by screws 23 through cushions 21 and washers 22, whereby a washing motor 9 is installed to the motor support member 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a washing machine in which a motor for washing or dewatering is attached to a motor support member.

(Prior Art) In a washing machine, for example, a two-tub type washing machine, when a motor for washing or dehydration is attached to plywood that is a motor support member, the mounting plate provided on the motor bracket is attached to the motor support member. It is fixed to the motor mounting base with screws, for example.

(m2i to be solved by the invention) In the above conventional configuration, since the motor bracket is made of an ordinary steel plate, vibrations generated in the motor are transmitted from the motor stator through the bracket and reach the motor support member. There has been a problem in that large noise is generated due to resonance of the motor support member.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a washing machine that can prevent vibrations generated by a motor from being transmitted to a motor support member, thereby reducing noise, and that can achieve this with a simple configuration.

[Structure of the Invention] (Means for Solving the Problems) The washing machine of the present invention has a motor for washing or dehydration attached to a motor support member, and the bracket of the motor is attached to two metal sheets. It is characterized by being constructed from a plate material with a viscoelastic resin sandwiched between the plates.

(Function) According to the above means, when the vibration generated by the motor is transmitted to the bracket, the vibration is absorbed by the viscoelastic resin, so that it is possible to prevent the vibration from being transmitted to the motor support member.
Resonance of motor support members.

Resonance can be prevented. Therefore, noise can be reduced.

Moreover, in this case, since a complicated vibration-proofing and sound-proofing structure is not required, it can be realized with a simple structure.

(Example) An example of the present invention will be described below with reference to the drawings.

First, in FIG. 2, reference numeral 1 denotes an outer case of, for example, a two-tub washing machine, and an operation box 2 is provided at the rear of the upper surface of the outer case. 3
is an operation panel section provided on the left side of the front surface of the operation box 2. As shown in FIG. 4 is a washing tub, and 5 is a dehydration tub, which are arranged in parallel inside the outer box 1. Reference numeral 6 denotes a substantially bowl-shaped agitator disposed at the inner bottom of the washing tub 4, and numeral 7 denotes a dewatering basket disposed inside the dehydrating tub 5. Reference numeral 8 denotes a motor support member, such as plywood, which supports the outer box 1. This synthesis 8 includes a washing motor 9 and a dehydrating motor 10.
is installed. The stirring body 6 is a motor 9 for washing.
It is configured to be rotationally driven via a rotation transmission mechanism 11. Further, the dewatering basket 7 is rotatably driven by a dewatering motor 10.

Here, regarding the washing motor 9, FIGS.
The details will be explained with reference to the figures. In FIG. 1, 12 is a stator, and 13 and 14 are brackets attached to both upper and lower ends of the stator 12 in the figure. A rotor shaft 15 is rotatably supported by these brackets 13 and 14 via bearings (not shown). Here, the brackets 13 and 14 have a thickness of about 40 to 80 mm between two metal plates, e.g.
Vibration-damping steel plate 18 (trade name: “Pipeless”, manufactured by Nippon Steel Corporation), which is a plate material made by sandwiching μ viscoelastic resin 17
It is constructed by molding. A flange-shaped mounting plate portion 19 is integrally formed on the lower bracket 14.

This mounting plate part 19 is placed on the motor mounting base 20.20 provided on the motor support member 8, and in this state, it is fixed with the screws 23 via the cushion 21 and the countersunk 22. A motor 9 is attached to a motor support member 8.

Also, regarding the motor 10 for dewatering, the brackets 24 and 25 are made of vibration-damping steel plates 18, similar to the motor 9 for washing described above, and the mounting plate formed on the bracket 25 at the lower part in FIG. The plate portion 26 is connected to the motor support member 8
It is placed on a motor mount 27 provided on the motor mount 27 and fixed with screws 28.

According to the above configuration, when the washing motor 9 is driven by executing the washing operation, vibrations generated by the motor 9 are transmitted from the stator 12 to the bracket 14. At this time, the bracket 14 is composed of a distributed steel plate 18, and this vibration damping steel plate 18 converts vibration energy into thermal energy by shear deformation A of the viscoelastic resin 17 accompanying bending vibration, as shown in FIG. This provides a vibration damping effect. Therefore, since the vibrations of the motor 9 are absorbed by the viscoelastic resin 17, transmission of the vibrations to the motor support member 8 can be prevented. Therefore, resonance 9 of the motor support member 8 can be prevented, and noise can be reduced. Moreover, in this case, since the brackets 13 and 14 are simply constructed from vibration-damping steel plates 18 instead of ordinary steel plates, complex vibration-proofing and sound-proofing structures can be easily constructed without the need to change the bracket mold. This can be realized with a configuration.

Furthermore, even in the case of dehydration operation, since the brackets 24 and 25 of the dehydration motor 10 are made of the split steel plate 18, noise can be reduced in the same manner as described above.

In the above embodiment, the present invention is applied to a two-tub type washing machine, but the present invention may also be applied to a dehydrating and dehydrating washing machine. In this case, the motor support member to which the motor for washing and dewatering is attached is the outer bottom of the water tank, and conventionally, vibrations generated by the motor are transmitted to the water tank and then further transmitted to the outer box via the hanging rod. There was a problem in that the outer box vibrated and generated a lot of noise. In contrast, in the present invention, the vibrations generated by the motor are absorbed by the bracket and are not transmitted to the water tank, so that noise can be reduced.

[Effects of the Invention] As is clear from the above description, the present invention relates to a washing or dehydrating motor attached to a motor support member,
Since the bracket of the motor is made of a plate material made by sandwiching a viscoelastic resin between two metal plates, it is possible to prevent vibrations generated by the motor from being transmitted to the motor support member, thereby reducing noise. Moreover, it has the excellent effect of being able to realize this with a simple configuration.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of a washing motor, Fig. 2 is a front view of the entire broken section, and Figs. 3 and 4 show vibration damping steel plates in different states. FIG. In the drawing, 8 is plywood (motor support member), 9 is a washing motor, 10 is a dehydration motor, 13, 14.24.25
1 is a bracket, 16 is a steel plate (metal plate), 17 is a viscoelastic resin, and 18 is a damping steel plate (plate material). Figure Figure Figure Figure

Claims (1)

[Claims] 1. A motor for washing or dehydration is attached to a motor support member, and the bracket of the motor is constructed from a plate material made by sandwiching a viscoelastic resin between two metal plates. washing machine.