JPH0631659U - Electric razor - Google Patents

Abstract

(57) [Summary] [Purpose] The outer cutter and the inner cutter are made to adhere sufficiently over almost the entire area to prevent the sharpness of both ends of the outer cutter from being deteriorated and to cover the entire area of the outer cutter. Provide an electric razor capable of obtaining a good sharpness. [Structure] An outer blade 13 and an inner blade 14 that slides in contact with the outer blade 13 are provided.
The electric razor that is cut by has a magnetic force generating unit (electromagnet 20) and a magnetic force attracting unit (iron core 31) that brings the outer blade 13 and the inner blade 14 into close contact with each other by the attracting action of the magnetic force generated by the electromagnet 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric shaver in which the outer blade and the inner blade have improved adhesion.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, there is known an electric shaver that has an outer blade and an inner blade that slides in contact with the outer blade, and that the inner blade cuts whiskers that have entered the outer blade.

An electric razor 1 shown in FIG. 5 has an outer blade 4 detachably attached to an outer blade case 3 mounted on an upper part of a main body case 2, and has a thin hole innumerable holes. Inside the outer blade 4 made of a plate and held in a mountain shape in the outer blade case 3, an inner blade 5 having an upper shape similar to the upper back surface shape of the outer blade 4 is arranged.

The inner blade 5 has cutting blades 5 a juxtaposed in the longitudinal direction of the outer blade 4 and is formed in a rectangular parallelepiped shorter than the length of the outer blade 4. The center of the longitudinal direction is built in the main body case 2. The drive unit 7 driven by the driven motor 6 is pivotally supported on the upper end of the support shaft 7a.

Then, by the operation of the drive unit 7, the inner blade 5 reciprocates along the longitudinal direction of the outer blade 4 in a sliding state in which the upper end of the cutting blade 5 a is brought into contact with the back surface of the outer blade 4, The beard that has entered from the hole of the blade 4 is sandwiched between the outer blade 4 and the inner blade 5 and cut to shave the beard.

By the way, in order to obtain a good sharpness of the electric razor, it is necessary to make the outer blade 4 and the inner blade 5 closely adhere to each other. Therefore, the electric razor 1 has the spring 8 mounted on the support shaft 7a. The inner blade 5 is pushed up in the direction of the outer blade 4 by the biasing force of, and is pressed against the back surface of the outer blade 4, and is slid in this pressed state.

[0007]

[Problems to be solved by the device]

 However, since the spring 8 is attached to the support shaft 7a located at the center of the inner blade 5 in the longitudinal direction, the urging force of the spring 8 concentrates on the central portion of the inner blade 5 and acts sufficiently on both ends. Therefore, there is a problem in that both ends of the inner blade 5 are not sufficiently adhered to the outer blade 4 and the sharpness of both ends of the outer blade 5 is poor.

The present invention has been made in view of the above problems, and an object thereof is to make the inner blade sufficiently adhere to the outer blade over the entire area of the inner blade so that both ends of the outer blade are The purpose of the present invention is to provide an electric razor capable of preventing the sharpness on the part side from being deteriorated and obtaining a good sharpness over the entire area of the outer blade.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, an electric shaver according to the present invention has an outer blade and an inner blade that slides in contact with the outer blade. The inner blade cuts whiskers that have entered the outer blade. The electric shaver has a magnetic force generating means and a magnetic force attracting means for bringing the outer blade and the inner blade into a close contact state by an attracting action by the magnetic force generated by the magnetic force generating means.

[0010]

[Action]

 With the electric shaver having the above configuration, the inner blade slides in contact with the outer blade to reciprocate along the longitudinal direction of the outer blade, but the magnetic force generated by the magnetic force generating means acts on the magnetic force attracting means. Since the outer and inner blades are attracted to each other and adhere to the outer blade over the entire area of the inner blade, the beard that has entered the outer blade must be sandwiched between the outer and inner blades for reliable cutting. It is possible to obtain good sharpness over the entire outer blade.

[0011]

【Example】

 An embodiment of an electric shaver according to the present invention will be described below with reference to the drawings.

The electric shaver 10 shown in FIGS. 1 to 3 includes a main body case 11, an outer blade case 12 mounted on the upper portion of the main body case 11, an outer blade 13 mounted on the outer blade case 12, and an outer blade. 13 and an inner blade 14 that slides in contact with the inner blade 13.

The electric razor 10 has a reciprocating inner blade 14 that slides in contact with the outer blade 13, and the whiskers that have entered the outer blade 13 are sandwiched between the outer blade 13 and the inner blade 14 and cut. It is a so-called reciprocating electric razor.

The body case 11 is formed into a thin and wide tubular body, and an opening 15 is opened in the center of the upper surface. Inside the main body case 11, a motor 16 and a drive unit 18 connected to an upper portion of the motor 16 via a connecting member 17 are housed (see FIGS. 1 and 2).

The drive portion 18 has spring portions 18b at both ends of the base portion 18a, and an upper portion of the drive portion 18 is moved upward from the opening 15 by being sandwiched by an elastic member 15a attached to the opening 15 at the center of the upper surface of the base portion 18a. A support shaft 19 is formed so as to protrude.

Then, by the operation of the motor 16, the drive unit 18 reciprocates in the longitudinal direction of the outer blade 13, and the support shaft 19 also reciprocates in the opening 15.

An electromagnet 20 is incorporated inside the support shaft 19, and the electromagnet 20 is mounted on both sides of the base portion 18 a via conductive wires 21 and is a long plate-like movable contact piece 22. , 22 are electrically connected to each other (see FIG. 2). Both the movable contact pieces 22 1 and 22 2 have a length equal to or larger than the reciprocating movement amount of the inner blade 14.

Both fixed contact pieces 23, 23 pressed against the movable contact pieces 22, 22 are installed on both inner wall surfaces of the main body case 11 corresponding to the movable contact pieces 22, 22. The fixed contact pieces 23, 23 are electrically connected to a power source section (not shown) of the electric razor 10 via a conductive wire 24 (see FIGS. 1 and 3).

Therefore, the fixed contact pieces 23, 23 are constantly slid on the movable contact pieces 22, 22 of the reciprocating base portion 18a in a pressure contact state, and the fixed contact pieces 23, 23 are energized. In some cases, the electromagnet 20 in the energized state will generate a magnetic force via both the movable contact pieces 22, 22.

The fixed contact pieces 23, 23 and the power source of the electric shaver 10 can be connected and disconnected by an electromagnet switch (not shown), and this switch turns on the electric shaver 10.・ Because it is linked with an operation switch (not shown) for OFF operation, when the operation of the operation switch stops the energization of the motor 16 that operates the electric razor 10, the electromagnet 20 also energizes. Be stopped.

The inner blade 14 is attached to the upper end of the support shaft 19.

The outer blade case 12 is detachably attached to the upper part of the main body case 11 to integrally form an upper outer shell shape of the electric shaver 10 with the main body case 11, and both end portions 25a, 25a. Also, it has a chevron-shaped opening 26 that extends from one side surface to the other side surface, leaving the side surface lower parts 25b and 25b. The outer blade 13 is detachably attached to the opening 26 (see FIG. 1).

The outer blade 13 is made of a thin plate having an elastic force in which innumerable holes (not shown) are opened over the entire surface, and is formed of a magnetic material such as nickel. The outer cutter 13 holds the engaging plates 27 formed on both opposite sides thereof and bends the engaging plates 27, 27 into a mountain shape. By being locked to the stopper portion 25c, it is held in a mountain shape along the shape of the opening 26 of the outer blade case 12 (see FIG. 2).

The inner blade 14 includes a thin plate-shaped cutting blade 28 made of, for example, a magnetic material such as stainless steel, and a base 29 on which the cutting blade 28 is juxtaposed in the longitudinal direction of the outer blade 13 at equal intervals. The outer cutter 13 has an elongated rectangular parallelepiped shape whose length in the longitudinal direction is shorter than the length of the outer blade 13 in the longitudinal direction. At the center of the base 29 in the longitudinal direction, a cylindrical tubular portion 29a that opens downward is formed (see FIGS. 1 and 2).

The inner blade 14 inserts and locks the upper end portion of the support shaft 19 into the tubular portion 29a via the spring 30 mounted outside the support shaft 19 with the support shaft 19 inserted. The inner blade 14 is attached to the drive unit 18, and is pushed up toward the outer blade 13 by the urging force of the spring 30 to be pressed against the back surface of the outer blade 13.

When the drive unit 18 reciprocates in the longitudinal direction of the outer blade 13, the inner blade 14 is also inscribed in the outer blade 13 over the entire longitudinal direction of the outer blade 13 via the support shaft 19. Slide.

Further, the cutting blade 28 has an iron core 31 made of a magnetic material, for example, a rod-shaped body made of iron, which penetrates through the substantially central portion of each cutting blade 28 (see FIGS. 1 and 2). .

Therefore, as shown in FIG. 4, when the electromagnet 20 generates the magnetic force M, the iron core 31, the inner blade 14, and the outer blade 13 are magnetized, respectively, and the outer blade 13, the iron core 31, and the The inner blade 14 and the inner blade 14 are attracted to each other, and the inner blade 14 is in close contact with the outer blade 13 over the entire area.

Therefore, the electromagnet 20 functions as a magnetic force generating means, and the iron core 31 functions as a magnetic force attracting means for bringing the outer blade 13 and the inner blade 14 into a close contact state by the attracting action of the magnetic force M generated by the electromagnet 20. To do.

By the way, since the magnetic force M generated by the electromagnet 20 is transmitted through the iron core 31 and distributed between both ends of the iron core 31 (see FIG. 4), the length of the iron core 31 is changed. The magnetic force distribution can be adjusted more. Therefore, in this embodiment, since the adhesion between the inner blade 14 and the outer blade 13 on both end sides is emphasized, both ends of the iron core 31 reach both ends of the inner blade 14, but are necessary. The length should be optimized according to

Next, the operation of the electric shaver having the above structure will be described.

First, the electric razor 10 is operated. The motor 16 is operated by operating the operation switch, and the inner blade 14 reciprocates along the longitudinal direction of the outer blade 13 in a sliding state in which the upper end of the cutting blade 28 is brought into contact with the back surface of the outer blade 13. , The beard that has entered through the hole of the outer blade 13 is sandwiched between the outer blade 13 and the inner blade 14 and cut to shave the beard.

At this time, the outer cutter 13 and the inner cutter 14 push the inner cutter 14 toward the outer cutter 13 by the urging force of the spring 30 to press it against the back surface of the outer cutter 13 and slide in this pressure contact state. In addition to the above, since the electromagnet 20 generates a magnetic force, the outer blade 13, the iron core 31 and the inner blade 14 attract each other, and the outer blade 13 and the inner blade 14 come into close contact with each other. The beard that has entered the outer blade 13 can be sandwiched between the outer blade 13 and the inner blade 14 for reliable cutting, and a good sharpness of the electric razor 10 can be obtained.

That is, the magnetic force generated by the electromagnet 20 causes the outer blade 13 and the inner blade 14 to sufficiently adhere to each other over the entire area of the inner blade 14, so that the biasing force of the spring 30 causes the center of the inner blade 14 to move. By compensating for the poor sharpness on both ends of the outer blade 13 due to concentration on the part, it is prevented that the sharpness on both ends of the outer blade 13 is poor, and good sharpness is obtained over the entire area of the outer blade 13. be able to.

Further, since the electromagnet switch is interlocked with the operation switch for turning the electric razor 10 on and off, when the electric razor 10 is turned off, the energization of the electromagnet 20 is stopped, and the electric razor is turned off. When 10 is turned off and the outer blade 13 is removed, magnetic force does not act between the outer blade 13 and the inner blade 14 and the iron core 31, and the outer blade 13 can be easily removed.

In the above embodiment, the electromagnet 20 and the iron core 31 are used to make sufficient contact with the outer blade 13 over the entire area of the inner blade 14, but instead of the electromagnet 20 and the iron core 31, a permanent magnet is used. A magnet may be used. As a method of using the permanent magnets, for example, the permanent magnets 32 are attached to both ends of the lower end portions of both the locking plates 27 of the outer blade 13, and the openings 15 on the upper surface of the main body case 11 are opposed to the permanent magnets 32. By arranging the permanent magnets 33 on both sides (see the dashed line in FIG. 1), the outer blade 13 can be pulled toward the upper surface of the main body case 11 and can be brought into close contact with the outer blade 13 over the entire area of the inner blade 14. .

[0037]

[Effect of device]

 Since the electric shaver according to the present invention has the above-mentioned configuration, it is possible to prevent the sharpness of both end portions of the outer blade from being deteriorated by fully adhering the outer blade to the outer blade over the entire area of the inner blade. It is possible to obtain good sharpness.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional explanatory view of an electric shaver according to the present invention.

2 is a partial cross-sectional explanatory view of the electric shaver of FIG. 1 from another direction. FIG.

FIG. 3 is an explanatory view seen from above a main body case.

FIG. 4 is a perspective view illustrating a state in which an iron core, an inner blade, and an outer blade are magnetized by a magnetic force generated from an electromagnet.

FIG. 5 is a partial cross-sectional explanatory view of a conventional electric shaver.

[Explanation of symbols]

 10 Electric Razor 13 Outer Blade 14 Inner Blade 20 Electromagnet (Magnetic Force Generation Means) 31 Iron Core (Magnetic Force Adsorption Means)

Claims (1)

[Scope of utility model registration request] 1. An electric razor having an outer blade and an inner blade that slides in contact with the outer blade, wherein the inner blade cuts whiskers that have entered the outer blade, and magnetic force generating means, An electric shaver comprising a magnetic attraction means for bringing the outer blade and the inner blade into a close contact state by an attraction action by a magnetic force generated by the magnetic force generating means.