JPH07197945A - Clutch plate - Google Patents

Abstract

PURPOSE:To instantaneously transmit and interrupt power by forming a plurality of scattered projections each having height smaller than thickness of a rubber plate, which projections are made of resin having hardness compared to rubber on a surface of the rubber plate. CONSTITUTION:A rubber plate 1 having thickness of 1mm is cured by NBR having Shore A hardness of 50 degrees. Epoxy liquid resin is mounted semi- spherically on the surface of the rubber plate 1 by 0.5mm, and heated to form a projection 2. When the thus formed clutch plate is pressed against a flat reception part, the resin projection 2 enters the rubber plate 1 having small hardness. An end of the projection 2 has the same level of the surface of the rubber plate 1. The clutch plate is in close contact with the flat reception part. Sufficient frictional resistance is generated by the viscosity and elasticity of the rubber plate 1. Force such as rotation of a driving part is transmitted to the reception side. When the clutch plate is cut, compression of the driving part is abruptly eliminated. Compression of the rubber plate which is pressurized by the projections 2 is released. Frictional resistance is eliminated, and power transmission is instantaneously stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch plate for transmitting rotation of a drive unit to a passive unit, particularly for electric appliances.

[0002]

2. Description of the Related Art In a conventional clutch plate, the surfaces of a driving portion and a passive portion both have a concavo-convex structure, and transmission of rotation or the like is carried out by engaging them, or the surface of the passive portion is a flat surface and is pressed. There is a material that transmits a force such as rotation by frictional resistance, and rubber or sponge having good compression elasticity is used as a material for improving frictional resistance and thus having poor slipperiness.

[0003]

The conventional clutch structure based on the engagement of the concavo-convex surface structure cannot transmit and disconnect the instantaneous force, and when the passive side is a flat surface, it increases the pressing force on the drive side and produces a strong frictional resistance. In order to transmit the rotating force and the like downward, one of them requires a strong pressing force on the drive unit.

Further, when a rubber material having a good frictional resistance is used, there is a drawback that separation does not occur instantly even if the clutch is disengaged due to the adhesiveness of the rubber. Furthermore, when a sponge material is used, the elasticity is strong and the disengageability of the clutch is good, but this time, on the contrary, it has a drawback that it is difficult to obtain a large friction resistance and is easily worn.

[0005]

Therefore, according to the present invention, the surface of the clutch plate is a rubber plate, and the surface of the rubber plate is made of a resin having a height lower than the thickness of the rubber plate and a hardness higher than that of the rubber plate. Multiple protrusions were formed.

The rubber material is not particularly limited, such as silicone type, butyl type, fluorine type, NBR type and EP type.
A material having a small compression set and a large adhesiveness is used, and the material of the protrusion is not particularly limited, such as acrylic, polycarbo, epoxy, and silicone.
A material having a low coefficient of friction, low elasticity, and strong toughness is desirable.

Further, in consideration of scratches on the surface on the passive side, it is advantageous that the shape of the projection is hemispherical.

[0008]

When the clutch plate of the present invention is compressed into a flat passive portion, the resin protrusion first dents into the rubber plate having a small hardness, and the height between the tip of the protrusion and the rubber plate surface becomes constant. At that point, the clutch plate comes into close contact with the flat passive part,
Due to the adhesiveness and elasticity of the rubber plate, sufficient frictional resistance is generated, and the force such as the rotation of the drive unit is transmitted to the passive unit side.
Then, when the clutch plate is cut, the compression of the drive part is suddenly removed, the compression of the rubber plate pressed by the resin protrusion is released, the rubber expands, the protrusion protrudes, the contact of the entire rubber is released, and the friction resistance disappears. , Power transmission is instantly released.

[0009]

The present invention will be described below with reference to the embodiments shown in the drawings.

Sure A hardness 50 degree NBR thickness 1
A rubber plate 1 having a thickness of 0.5 mm was vulcanized, and an epoxy liquid resin (TB-2103 manufactured by ThreeBond Co., Ltd.) was hemispherically laid on the surface of the rubber plate to a thickness of 0.5 mm and heat-cured to form a protrusion 2.

The clutch plate 1 of the present invention is sandwiched between glass plates having good slipperiness, and the lower glass plate does not move even if the upper glass plate 3 is moved. Then, after applying pressure, the upper glass plate 3
When was moved, the lower glass plate 4 also moved at the same time.

When the upper plate 3 was moved while releasing the pressure of the drive plate, the lower glass plate 4 did not move. Figure 2
Indicates a state where pressure is applied.

[0013]

Since the present invention is based on a rubber plate having good elasticity, force transmission / separation / cutting can be performed instantaneously, and there is no fear of abrasion due to friction, and a material having a large adhesiveness can be used. Power transmission efficiency is high.

Further, since the drive section is compressed, it can be used as a passive section having an arbitrary shape.

[Brief description of drawings]

FIG. 1 is a sectional view of a clutch plate of the present invention.

FIG. 2 is a sectional view showing a state in which pressure is applied.

[Explanation of symbols]

 1 rubber plate 2 protrusion 3 upper glass plate 4 lower glass plate

Claims (3)

[Claims] 1. A clutch plate formed on a surface of a rubber plate by spreading a plurality of projections made of a resin having a hardness higher than that of the rubber and having a height lower than the thickness of the rubber plate. 2. The clutch plate according to claim 1, wherein the rubber plate has a small permanent set and a large adhesiveness. 3. The clutch plate according to claim 1, wherein the protrusion has a small coefficient of friction, a small elasticity, and a tough resin.