RU84290U1 - ELECTRIC SAFETY RAZOR - Google Patents

Abstract

1. An electric safety razor, consisting of a handle-body, with a rotating drum with blades placed at the end and driven by an electric motor, characterized in that the blades in the rotating drum are made safe and are plane along the surface of rotation of the drum and inclined at a slight angle in the direction of rotation of the drum. ! 2. Electric safety razor according to claim 1, characterized in that the rotary drum drive from the electric motor is made in the form of a flexible shaft or cable, or rigid shafts, or gears, or a combination thereof. ! 3. Electric safety razor according to claim 1 or 2, characterized in that lubricating strips are installed on the rotating drum, alternating between the blades at regular intervals.

Description

Application area

The utility model relates to razors and is intended for cutting the hair of a human stela. More specifically, the device relates to a combination of safety razors and electric razors.

State of the art

A device is known that uses third-party sources of electrical power, and without power sources, related to electric shavers and safety razors, in which a device is proposed along the base of a shaving machine of a certain design made of soft material (see US 6516518).

Also known is an electric shaver containing hair cutting means and an activating electrode located near electrically isolated cutting means with a reverse electrode on a razor and remote from the activating electrode (see GB 1120349).

Also known is a safety razor containing razor blades mounted in grips, characterized in that the grippers are made of metal, the razor is provided with an element for contact with skin and hair and an electric current source connected to it and with grippers with the possibility of creating negative polarity on the grippers, and on element for contact with skin and hair - positive polarity (see RU 2346805).

The disadvantage of all known solutions is that safety razors usually contain 1-3 blades, which become very dull very quickly due to the fact that the user guides the razor with his hand at a slow speed, which increases the resistance of the hair to the blades and dulls them.

Also known patent EP1900487 for electric razor. This solution describes a rotating drum with blades.

The disadvantage of this solution is that the blades on the drum are perpendicular to the direction of rotation of the drum, and as a result, the razor is not safe, but is a type of conventional electric razor with knives.

This razor is easy to cut the skin when shaving, it requires high speeds of rotation of the drum in order to effectively cut hair with knives located perpendicular to the direction of rotation. Thus, a razor needs a powerful electric motor, and therefore a powerful current source (either a high-capacity battery or a mains power adapter). The razor becomes cumbersome in size, as can be seen from this solution.

The objective of the utility model is to expand functionality by combining the benefits of a safety razor and the properties of an electric razor.

The technical result of the claimed device is a more effective safe and easy shave, longer blade life.

Brief Description of the Drawings

Figure 1 shows a constructive device for an electric safety razor, where 1 is a cutting drum, 2 is a drive gear, 3 is a flexible shaft, 4 is an electric motor, 5 is a battery or adapter for connecting power from the network, 6 is the surface of the skin of a person’s body, 7 - hair, 8 - lubricating strip, 9 - blade, 10 - direction of rotation of the cutting drum.

Figure 2 shows the device electric safety razors in the assembly, where 11 is the button on / off of the electric motor.

Utility Model Implementation

The claimed technical result is achieved due to the fact that (see Figure 1) an electric safety razor, consisting of a handle body, with a rotating drum (1) located at the end with blades (9), driven into rotation by an electric motor (4), characterized in that the blades (9) in the rotating drum are made safe and are positioned along the surface of rotation of the drum and inclined at a slight angle in the direction of rotation of the drum.

The rotary drum drive from the electric motor (4) can be made in the form of a flexible shaft (3) or a cable, or rigid shafts, or gears, or a combination thereof.

Lubricating strips (8) are installed on the rotating drum (1), alternating between the blades (9) at regular intervals.

The electric safety razor consists of a cutting drum (1) and a handle body. In the housing are an electric motor (4), a battery (5) of the electric motor and a drive that transmits torque from the electric motor to the cutting drum. Since the rotation of the drum requires little power (since the blades are located along the surface of rotation of the drum, and not across), and therefore a small electric motor in volume, a battery, battery or adapter can be used as a battery (5) to connect power through the network.

Also on the case is the on / off button (11) (see Figure 2) of the electric motor (4) of an electric safety razor.

The cutting drum is a cylinder, in the body of which there are blades (9) and, possibly, lubricating strips (8) alternating between themselves and the blades at regular intervals.

The drive transmitting torque from the electric motor (4) to the cutting drum (1) can be performed by any of the known methods: by means of a flexible shaft (3) or by rigid shafts and gears, or a combination thereof.

Figure 1 shows an example of a drive in the form of a flexible shaft.

Principle of operation

The electric motor (4) with the help of the drive transmits torque to the cutting drum (1). The cutting drum (1), rotating, using the blades (9) cuts the hair (7) from the skin (6) of the human body and at the same time lubricates the skin with the help of lubricating strips (8).

After wear of the blades (9) and / or lubricating strips (8), the cutting drum changes to a new one.

This design involves the combination of an electric and safety razor.

In existing safety razor systems, the movement of the blades occurs only when the razor is moved along the surface of the body with the hand of a person and in exactly one direction. In this design, the movement of the blades causes the torque of the electric motor. Thus, shaving becomes easier and simpler, can be carried out by moving the razor with your hand in any direction.

Greater shaving safety is due to the fact that the blades rotate at a high speed and the mowing of the hair by the blades occurs even if the blades become dull. The dull blades will become longer, because during shaving with a high speed of rotation of the drum with blades, the hair resistance decreases. As a result of all this, the service life of the blades is significantly increased (due to an increase in the possibilities of using more blunt blades and due to a decrease in the wear rate of the blades).

Claims (3)

1. An electric safety razor, consisting of a handle-body, with a rotating drum with blades placed at the end and driven by an electric motor, characterized in that the blades in the rotating drum are made safe and are plane along the surface of rotation of the drum and inclined at a slight angle in the direction of rotation of the drum. 2. Electric safety razor according to claim 1, characterized in that the rotary drum drive from the electric motor is made in the form of a flexible shaft or cable, or rigid shafts, or gears, or a combination thereof. 3. Electric safety razor according to claim 1 or 2, characterized in that lubricating strips are installed on the rotating drum, alternating between the blades at regular intervals.