JPH0217545Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a reciprocating electric shaver.

[Conventional technology]

In a conventional electric shaver, the inner blade is pressed against the blade of the outer blade and is operated by the driving force of the driver.
The reciprocating type is formed by embedding a large number of inner cutters made of thin steel plates into an inner cutter base made of synthetic resin or light metal.

[Problem that the invention attempts to solve]

However, when manufacturing the inner cutter body of this conventional electric shaver, the reciprocating type requires a large number of inner cutters to be set one by one into a mold, making production cumbersome and time-consuming. There was a problem. Furthermore, since the blades of the outer blade body and the inner blades of the inner blade body rub against each other, there is a problem in that the friction noise is annoying.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a reciprocating electric shaver in which the inner cutter support of the inner cutter body has an arcuate upper surface and an opening at the lower surface, and the inner cutter support base of the inner cutter body has an arcuate upper surface and an opening at the lower surface. It is formed into a substantially semi-cylindrical shape with a communicating internal space, and the inner cutter support and the inner cutter provided on its arcuate upper surface are integrally formed of ceramic.

[Effect]

According to this electric shaver, the inner cutter of the inner cutter body and the inner cutter support are integrally formed of ceramic, so there is no need to manufacture the inner cutter separately, and it is also possible to set the inner cutter into the mold. Since it is not necessary, the inner cutter body can be manufactured easily and the manufacturing time can be shortened. In addition, since the ceramic inner blade slides into contact with the metal blade of the outer blade during use, the friction noise can be quieter than the conventional friction noise caused by two metals. Furthermore, since ceramic has excellent wear resistance, the edge of the inner cutter is not damaged and good sharpness can be maintained.
Moreover, since the inner cutter support base is formed into a substantially semi-cylindrical shape with an arcuate upper surface, an opening at the lower surface, and an internal space communicating with the opening at the lower surface, the inner cutter body can be made lightweight. .

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is the main body of a reciprocating electric shaver, which is made up of a pair of cases 2 made of synthetic resin. 3 and a blade 4 that is removably attached to the case 3. Attachment and detachment between the outer blade body 5 and the main body 1 is achieved by connecting elastic locking bodies 6 provided on the left and right sides of the upper part of the main body 1 and engagement protrusions protruding inwardly on the left and right sides of the opening of the outer cutter case 3. This is done by engaging and disengaging from 7. A driving body such as a motor 9 driven by a storage battery 8, for example, is provided within the main body 1.
Then, the main shaft 1 of the motor 9 protrudes upward.
A cam 11 having an eccentric shaft 11a is attached to the cam 10, and the eccentric shaft 11a is engaged with a conversion member 12 that converts the eccentric rotational motion into horizontal reciprocating motion in the figure. Further, the conversion member 12 is provided with a drive shaft 13 that projects upward, and the tip of this drive shaft 13 projects from the upper wall 14 of the main body 1 . In addition,
The drive shaft 13 passes through a seal 15 made of a foamed urethane sheet that is provided in the upper wall 14 of the main body 1 so as to be movable from side to side in FIG. .

Reference numeral 16 denotes an inner cutter body formed by molding and sintering ceramic, and this inner cutter body 16 includes an inner cutter support stand 17,
A large number of inner cutters 18 are arranged at approximately constant intervals in the longitudinal direction of the support base 17 and are integrally formed with inner cutters 18 that protrude upward along the arcuate upper surface of the support base 17. The inner blade support 17 has a substantially semi-cylindrical configuration with an arcuate upper surface, an open bottom, and an internal space communicating with the opening of the lower surface. An inner cutter connecting member 19 is attached approximately at the center of the section. The connecting member 19 is connected to the distal end of the drive shaft 13 so that the inner blade 16 can swing around the drive shaft 13 and can move up and down along the drive shaft 13. Furthermore, this connecting member 19
A spring 20 is provided between the drive shaft 13 and the seal 15, and this spring 20 is connected to the inner blade body 1.
6 is pushed up, and the arcuate blade surface of the inner cutter 18 is brought into pressure contact with the inner surface of the blade 4 of the outer cutter body 5.

In this configuration, the inner blade 1 is pressed against the inner surface of the blade 4 of the outer blade 5 as the motor 9 is driven.
6 reciprocates along the longitudinal direction of the blade 4 of the outer blade body 5. This operation performs shaving. During this use, since the inner cutter 18 of the ceramic inner cutter 16 comes into sliding contact with the metal blade 4 of the outer cutter 5, the frictional sound is replaced by the conventional frictional noise between metal members of the outer cutter and the inner cutter. It can be made quieter. The inner blade support 17 has a substantially semi-cylindrical structure with an arcuate upper surface, an opening at the lower surface, and an internal space communicating with the opening at the lower surface. Can reduce weight. Therefore, the inner blade body 16 has a low load on the driving body 9, and the usage time of the storage battery 8 can be extended.

In addition, the inner cutter support stand 17 of the inner cutter body 16 and the inner cutter 18
Since these are integrally molded and sintered from ceramic, there is no need to manufacture a large number of inner cutters when manufacturing the inner cutter body 16. There is no need to set the Therefore, the inner cutter body can be manufactured easily and the manufacturing time can be shortened.

Furthermore, since ceramic has excellent wear resistance, the edges of the inner cutter 18 are not damaged and can maintain good sharpness.

Furthermore, although the driving body is the motor 9 driven by the storage battery 8, it goes without saying that the motor may be driven by alternating current electricity, and the inner blade body may be reciprocated by an electromagnetic type. Furthermore, if the ceramic inner blade 18 is molded to be as thin as the current metal inner blade,
The weight of the entire inner blade body 16 can be made lighter than that of the conventional one. Therefore, the discharge current required to operate the drive body 9 such as a motor can be reduced, and the usage time of the storage battery 8, in other words, the number of times of shaving can be increased. This allows the storage battery 8 to be made smaller and is useful for making the main body 1 smaller.

[Effect of idea]

According to the present invention, the inner cutter of the inner cutter body and the inner cutter support are integrally formed of ceramic, making it easy to manufacture the inner cutter body and shortening the manufacturing time. The friction noise between the blade and the inner cutter can be suppressed, and good sharpness can be maintained. Since it has a substantially semi-cylindrical structure with a communicating internal space, the weight of the inner blade can be reduced.

[Brief explanation of drawings]

FIGS. 1 and 2 show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view of an electric shaver, and FIG. 2 being a perspective view of the inner cutter body. 1...Main body, 4...Blade, 5...Outer blade body, 9...
Drive body (motor), 16... Inner cutter body, 17... Inner cutter support stand, 18... Inner cutter.

Claims (1)

[Scope of utility model registration request] Consisting of a main body with a built-in drive body, an outer cutter body that is removable from the main body, a number of inner cutters that are pressed against the inner surface of the blades of the outer cutter body, and an inner cutter support that supports these inner cutters, In the reciprocating electric shaver, the inner cutter support base includes an inner cutter body connected to a drive shaft that is reciprocated by the drive body via an inner cutter connecting member, and the inner cutter of the inner cutter body. The support base is formed into a substantially semi-cylindrical shape having an arcuate upper surface, an opening at the lower surface, and an internal space communicating with the opening on the lower surface. An electric shaver characterized in that the provided inner cutter is integrally formed of ceramic.