JPS6014222B2 - Vibration isolators for electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolator for an electrical appliance that generates vibrations.

Conventionally, in order to absorb vibrations from a vibrating body used in a massager, for example, a vibration-proof rubber 46 as shown in FIG. 1 has been used between the lower surface of the legs 47 of the massager and the floor surface. .

That is, the anti-vibration rubber 46 shown in FIG. 1a has a comb-shaped cross section, and the anti-vibration rubber 46 shown in FIG. 1b has protrusions on both lower ends. However, these anti-vibration rubbers 46 have high elasticity, and therefore cannot exhibit sufficient anti-vibration effects on the floor. Furthermore, in the case of a vibration isolating rubber 46 consisting of a foamed rubber body 49 made of foamed urethane and a rubber body 48 provided on the upper surface of the foamed rubber body 49 as shown in FIG. A foamed rubber body 4 as shown in the figure
9 had a problem in that tearing A was likely to occur.

The present invention has been provided in view of the above-mentioned points, and provides a vibration isolator for electrical appliances that has the effect of isolating vibrations on floor surfaces and reducing noise, and that is not easily damaged during use. It is something to do.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Electric appliance 41 used as the vibration isolator of the electric appliance of this embodiment
For example, there is a floor-standing foot pipe generator, which is provided with a pipe generator main body 1 provided with a vibrating body 3 that generates vibrations. That is, to briefly explain the foot noisy brake system based on FIG. A frame cover 13 is attached to the outer side of each of the pair of pillars erected from the base 7, which has a rectangular pipe. be. The housing 2 is formed into a thin box shape by joining a first housing 11 and a second housing.
The first housing 1 and the second housing are both molded products made of rigid hard synthetic resin such as Amo resin, and the first housing 1 1
The surface is provided with an arcuate curved surface, and a large number of small protrusions are integrally provided over the entire surface. The outer surface of the second housing is coated with an elastic material such as foamed urethane resin, and the surface of the elastic material is further covered with cloth, so that the surface of the second housing is hard compared to the hard surface of the first housing 11. It is there as a surface. A vibrating body 3 is mounted within the housing 2. This vibrating body 3 has a zero weight 10 and a cooling fan 19 attached to both ends of the output koji 18 of a motor 17. There is. Motor mounting plate 2
This vibrating body 3, which is fixedly fixed, is disposed within the housing 2 by screwing a motor mounting plate 20 to the inner surface of the first housing 11. Base 7 configured as above
and the pipelator main body 1 are connected via a pair of arms 8.

Each arm 8, which has a substantially L-shaped flat plate shape, has a shaft supported by a bearing bush at the upper end of the column at one end, and two pipes installed between the pair of arms 8, 8 at the other end. shaped axis 2
7,27. The housing 2 is supported by these shafts 27, 27. A pair of mounting plates 28, 28 are installed in the housing 2 between both shafts 27, 27 passing through the housing 2, and both ends of each mounting plate 28 are attached to the inner surface of the first housing 11 via a vibration isolator. Fixed. The cylindrical vibration isolators made of rubber-based elastic material have one end fixed to the mounting plate 28 and the other end fixed to the first housing 11, and in the illustrated example, a total of four vibration isolators are used. Furthermore, each rattan 27 passes through the first housing 11, and a vibration-proof bearing 29 made of the same rubber-based elastic material is attached to the first housing 11.
9 is suitable for the shaft 27. However, this anti-vibration bearing 29
The inner diameter of the shaft 27 is larger than the outer diameter of the shaft 27, so that when an excessive weight load is applied to the housing 2 and the elastic limit of the vibration isolating material is exceeded, the pith 27 and the vibration isolating bearing 29 come into contact with each other. There is. In the figure, 35 is a power cord, 36 is a power lamp, and 3' is a switch. In the figure, reference numeral 42 denotes a metal plate on which, for example, the above-mentioned foot pipe plate is remounted, and this metal plate 42 has a substantially semicircular cross section.

Reference numeral 45 denotes a peripheral rubber body, and the upper part of the peripheral rubber body 45 has a recess with a circular cross section corresponding to the shape of the sheet metal 42, and the lower part of the peripheral rubber body 45 is shown in FIGS. 5 and 7. As shown, a box-shaped accommodating portion 45a with an open bottom is formed, and a foam 43 is housed within this accommodating portion 45a as described later.

The lower surface and surrounding green of the sheet metal 42 are adhesively fixed to the upper surface and upper end peripheral edge of the surrounding rubber body 45. Reference numeral 43 denotes a rectangular parallelepiped foam made of a soft synthetic resin with a low elastic modulus and a low viscosity coefficient, such as foamed rubber or foamed urethane, and is disposed in the housing portion 45a of the surrounding rubber body 45. 43 is adhesively fixed to the ceiling surface of the accommodating part 45a below the surrounding rubber body 45, and the surrounding rubber body 45 protects the foam 43 by disposing the foam 43 in this accommodating part 45a. be.

Reference numeral 44 denotes a rubber sheet harder than the foam 43. This rubber sheet 44 is formed to have the same size as the lower surface of the foam 43, and is adhesively fixed to the lower surface of the foam 43.

Further, this rubber sheet turtle 4 is used to protect the lower surface of the foam body 43 and to maintain an appropriate level of sliding force against the floor surface.
Reference numeral 51 denotes a lower end surface of the surrounding rubber body 45, that is, a rubber sheet 44 from the side pieces of the surrounding rubber body 45 located on both sides of the foam body 43.
A tongue piece that protrudes integrally so as to almost reach the bottom surface of the
Three tongue pieces 51 are formed on each side of the surrounding rubber body 45.

In this way, the sheet metal 42, the surrounding rubber body 45 and the foam body 43
and the rubber sheet 44 constitute a vibration isolator main body 50. The pipe-shaped base 7 of the foot pipe generator described above is mounted on the upper surface of the vibration isolator main body 50 as shown in FIG. The connection between the base 7 and the vibration-proof odor main body 50 is established by drilling a screw hole (not shown) that passes through the vibration-proof odor main body 50 from the lower surface to the upper surface, and on the other hand, the base 7 is tapped. Attach the base 7 and the vibration isolator body 50 with screws.
The connection is fixed. In the case of this foot pipe generator, two vibration-proof odor main bodies 5 are placed below the base 7 on the left and right sides.
0 is set. Since the upper surface of the vibration isolator main body 50 is made of the sheet metal 42, the connection with the base 7 is ensured. As shown in FIG. 8, when the foot pipe plater with the vibration isolator body 50 attached thereto is used by placing the foot on the floor, vibrations are generated from the vibrating body 3 of the foot pipe plate.

The foam body 43 of the anti-vibration and odor main body 50 supports the weight of the foot pipe plate itself and the weight of the legs of the human body, and as shown in FIG. In this case, it is deformed as shown in the figure. That is, the vibration-proof odor main body 50
The lower rubber sheet 44' has a lower coefficient of friction against the floor surface than the foam 43, and a higher coefficient of friction than plastic or metal, so it does not slip. Further, the tongue piece 51 of the surrounding rubber body 45 is rolled downward, and the tearing force applied to the foam body 43 is reduced by the tongue piece 51 taking charge of this force, thereby preventing the foam body 43 from tearing.
This foamed body 43 with a small elastic modulus absorbs vibrations and sound to the floor surface. As described above, the present invention includes disposing a foam made of a soft synthetic resin with a low modulus of elasticity, such as foamed rubber or foamed urethane, below a sheet metal on which an electrical appliance is mounted; Since a rubber sheet that is harder than foam is glued to the bottom surface of the foam, the weight of the appliance is supported by the foam, which has a modulus of elasticity of 4.0 and a low viscosity coefficient, so it has great vibration and soundproofing effects. Because the rubber sheet is glued to the bottom surface of the foam, it has a lower coefficient of friction than the foam on the floor, and when used against plastic or metal surfaces, the rubber sheet has a higher coefficient of friction than the foam, so it is less likely to cause vibrations or electricity. It has the effect of not slipping even with the weight of the instrument, and the above-mentioned sheet metal is fixed on the upper surface of the upper part, and a box-shaped housing part with a bottom surface is formed in the lower part, and the foam is inserted into the housing part. A surrounding rubber body for accommodating is provided between the sheet metal and the foam body, and a plurality of tongue pieces are integrally protruded from the side pieces of the surrounding rubber body located on both sides of the foam body and reach approximately the bottom surface of the rubber sheet. Therefore, damage to the foam is prevented, and the surrounding rubber body and the floor surface come into contact only at the tongues, resulting in a higher soundproofing effect.

[Brief explanation of the drawing]

Figures 1a and b are side views of a conventional vibration isolating rubber, Figure 2 is a side view of another conventional vibration isolating rubber, and Figure 3 is a second housing of an electrical appliance using an embodiment of the invention. Fig. 4 is a perspective view of the same as the above, Fig. 5 is an enlarged perspective view of the main parts showing the state where the vibration-proof odor main body and the base are fixed, Fig. 6 is the main parts of the same as the above. 7 is an enlarged side view showing a state in which the same vibration isolating device is applied; FIG. 8 is an explanatory diagram showing the state in which the electric appliance to which the above vibration isolator is attached is used; 41 is an enlarged perspective view. Electric appliance, 42 is a sheet metal, 43 is a foam, 44 is a rubber sheet,
45 is a surrounding rubber body, and 51 is a tongue piece. Figure 1 Figure 2 Figure 5 Figure 7 Figure 3 Figure 4 Figure 6 Figure 8

Claims (1)

[Claims] 1. A foam made of a soft synthetic resin with a low elastic modulus, such as foamed rubber or foamed urethane, is placed below the sheet metal on which the electrical appliance is placed, and the lower surface of the foam is made of a soft synthetic resin that is harder than the foam. The sheet metal is fixed on the top surface of the upper part, and a box-shaped housing section with an open bottom is formed at the bottom. A vibration isolator for an electrical appliance, comprising a plurality of tongue pieces integrally provided between the body and the rubber sheet and protruding from the side pieces of the surrounding rubber body located on both sides of the foam body, reaching approximately the bottom surface of the rubber sheet.