JPS5923204Y2 - Electric record cleaner - Google Patents

Description

[Detailed explanation of the invention] This invention relates to the improvement of an electric record cleaner, and is particularly capable of cleaning not only lint on the surface of the record, but also dust and cotton dust within the groups (sound grooves) of the record. The purpose is to provide a record cleaner with

Generally, as shown in FIG. 1, this type of cleaner has a motor 51 housed in the upper part of a main body case 50 that houses a dry cell battery 49 as a power source.
The lower surface of the motor 5 is opened in the longitudinal direction, and the roll brush 53 is attached to the main body case 50 along this opening 52 so that its bristles 54 protrude slightly.
1 and a belt 55 to drive rotation.

However, the bristle 54 of the conventional roll brush 53
As shown in FIG. 2, is planted in the core 56 at a right angle Ra = 90° to the cleaning surface such as the record surface R. Therefore, in the actual usage condition as shown in FIG. The cleaning effect was only that of sweeping away large lint on the board surface R, and it was not effective at all against dust and cotton dust within the group.

This shortcoming is due to the following factors.

(2) Group G of record R is a standard type shown in FIG. 3, and has a cross-sectional shape with a group opening width W of about 0.1 mm and an opening angle α of about 90°.

■ The minimum wire diameter T of the bristles 54 of the roll brush 53 is 0.2 mm, and 0.3 mm is generally used, considering mechanical strength and ease of flocking the bristles 54. .

Therefore, as shown in FIG. 3, since the bristle wire diameter T is larger than the opening width W of the glove G, the bristle 54 is bent with respect to the record surface R, and the abdomen 5 of the bristle 54 is bent.
4 A will cause the ball to slide on the board R, making it impossible to scrape out the dust in group G.

Therefore, in order to eliminate the above-mentioned drawbacks, this invention has been developed by arranging the core of a rotating roll brush connected to a motor in the main body case parallel to the surface to be cleaned, and at the same time disposing the bristles of the roll brush at the core. It is planted in the core at an angle to the ground.

Examples of this invention will be described below with reference to the drawings.

In Figure 4, 1 is a core made of two steel wires coated with vinyl chloride and twisted together, and 2 is a bristle, which attracts dust and dirt due to static electricity during use since the material of the record is vinyl chloride or hard vinyl. In consideration of this, vinyl chloride is used as the base material, and the wire diameter T1 is selected to be 0.2 mm.

When twisting the core parts 1 together, this bristle 2 can be made by cutting the bristle 2 to a length longer than the diameter as shown in FIG.
The bristle 2 is planted while maintaining an inclination angle Rb with respect to the base line P of the core portion 1.

After planting, the length of each bristle 2 is cut uniformly to correct it into a cylindrical shape.

This inclination angle Rb is preferably set in the range of 40° to 70°, and the most excellent effect is obtained at 60°.

That is, if the roll brush L is attached to the main body case 50 shown in FIG.
Since it rotates at 4000 revolutions per minute, each bristle 2 acts like an umbrella opening as shown by arrow A in FIG. 4 due to centrifugal force.

For this reason, when the roll brush L is applied to the record surface R,
As shown in FIG. 5, each bristle 2 enters into the group G from the periphery of each bristle 2, and the amount of entry is further strengthened by the centrifugal force.

The increase in the penetration force due to this centrifugal force is maximized when the inclination angle Rb of the bristle 2 is 60°, and when it is smaller than 40°, the bristle 2 is tilted against the record surface R from the beginning. Since it hits at the belly part, it cannot penetrate into the greep G and the scraping effect cannot be obtained.

Moreover, if the above-mentioned inclination angle Rb is made larger than 70°, the centrifugal force is reduced and the amount of intrusion into the group G becomes small.

In addition, in FIG. 4, 3 is a pulley, and 4 is a shaft body.

As described above, according to this invention, since the bristles 2 of the roll brush L are inclined with respect to the surface to be cleaned such as the record surface R, the bristles 2 are subjected to centrifugal force due to the high speed rotation of the roll brush L. When the bristles 2 are opened, the tip of the bristle 2 enters into the group G and even the dust inside the group G is completely scraped out, thereby enhancing the cleaning action and making it possible to always provide records with good sound quality.

Note that the opening angle α of group G is 8T in the standard type group, whereas it is 90° for bristle 2, so the tip of bristle 2 does not reach the bottom of group G, but the record stylus does not reach the trough of group G. Since it detects the deflection of the surface, there is no need to clean even the bottom of the valley.On the other hand, with this device, the tip of the Bunotsuru 2 actively hits the slope, making it excellent for cleaning record groups. It is effective.

Furthermore, according to this invention, even if the wire diameter of the bristle 2 is selected in consideration of mechanical strength and abrasion resistance, it is possible to clean the inside of the group G, and moreover, it is possible to clean the inside of the group G. The tip of the bristle 2 is cut diagonally to make it tapered, so that it can be cut into pieces at right angles without increasing processing time or reducing mechanical strength, and manufacturing processing can be simplified.

[Brief explanation of drawings]

Figure 1 is a perspective view of the bottom side of a general record cleaner, Figure 2 is a front view of a conventional roll brush, Figure 3 is an enlarged view of the same conventional example in use, and Figure 4 is an implementation of this invention. FIG. 5 is an enlarged view of the roll brush in use using the same embodiment. 1... Core, 2... Bristle, 50
...Body case, 51...Motor, R
b...Inclination angle.

Claims (2)

[Scope of utility model registration request] (1) Roll brush L connected to motor 51 and rotating
A core part 1 of the roll brush L is arranged in a main body case 50 parallel to the surface to be cleaned, and the bristles 2 of the roll brush L are implanted in the core part 1 at an angle with respect to the core part 1. . (2) The electric record cleaner according to claim 1, wherein the inclination angle Rb of the bristle 2 is selected in the range of 40° to 70°.