JPS6154430B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver, and an object of the present invention is to make it possible to use a rotary blade and a reciprocating blade as desired, and to make the shaver simple in structure, small in size, and convenient to carry.

An embodiment of the invention is shown in FIGS. 1 to 10. That is, this electric shaver consists of a razor main body A, a reciprocating blade B, and a rotary blade C.

The razor body A has a cylindrical housing 1 with both ends open, which also serves as a grip, and a partition plate 2 is provided in the middle part of the housing 1, slightly on the upper end side, and a switch hole 3 is formed in the circumferential side of the upper end side, connected to the partition plate 2. ing. A notch 6 for a switch is formed at the rear end of a cylindrical motor mounting base 5 with a threaded tube 4 formed on the top, and the front end side of the motor 7 is inserted from the rear end, and the motor shaft 8 is inserted into the screw tube. 4, the motor 7 is attached to the motor mount 5 at the front end using two screws 9, and the motor mount 5 is inserted into the upper opening of the housing 1 and fixed by the concave-convex engaging portion 10. Also housing 1
A female thread 11 is formed at the lower end opening of the female thread 11.
Screw the battery cover 12 onto the partition plate 2 of the housing 1.
The lower end side space is a battery storage chamber, and the battery 13 is placed in this space.
to store. The switch 14 is attached to the switch hole 3 and the switch notch 6, and the button 14a is positioned in the hole 3. For electrical connection, a first band-shaped current-carrying metal fitting 15 is installed in the longitudinal direction of the inner circumferential surface of the battery storage chamber, the lower end 15a of which is configured to be elastically bent at right angles, and the battery cover 12 is screwed onto the housing 1. This makes elastic contact with the cathode of the battery 13, and the upper end 15b of the current-carrying metal fitting 15 is soldered to the upper terminal 14b of the switch 14. Next, in the longitudinal direction of one opposing portion of the inner peripheral surface of the housing 1 on the motor mounting base 5 side, there are band-shaped second and third energizing metal fittings 16,
Install 17. First, the second energizing metal fitting 16 has an arcuate plate 16a formed at right angles on its upper end, is positioned on the upper surface of the motor mounting base 5, and its lower end 16b is connected to the switch 14.
solder to the terminal 14b on the upper side. The third current-carrying metal fitting 17 has an arcuate plate 17a formed at a right angle on its upper end, and a ring plate 17b connected at a right angle at its lower end. One motor terminal 7a on the rear end surface of the motor 7 and the terminal 14c on the lower side of the switch 14 are each soldered at their contact parts, and the arc plate 17a is located on the top surface of the mounting base 5 and is connected to the second current-carrying metal fitting 16. The arc plate 16a and the motor shaft 8 are arranged at symmetrical positions. Attach the anode fitting 18 to the central protrusion 7' on the rear end surface of the motor 7 and solder it to the other motor terminal 7b.
enters the central hole 2a of the partition plate 2 and contacts the anode of the battery 13. In this way, the first current-carrying metal fitting 1
5. A motor drive circuit (Fig. 10) for the motor 7, battery 13, and switch 14 is formed via the anode metal fitting 18 and the ring plate 17b, and the switch 14
When the switch 14 is turned on, the motor 7 is driven, and the second
Since the third current-carrying metal fittings 16 and 17 extend, the motor 7 can also be driven by short-circuiting the arc plates 16a and 17a. A joint 19 for rotation transmission is attached to the motor shaft 8.

The reciprocating blade B is formed by fitting a cylindrical blade holder 20 with the same diameter as the housing 1 into a semi-cylindrical base 21 and an outer blade body 22 with a hook 23.
Through holes 24 and 25 are formed at the center of both ends of the blade holder 20, and a female threaded portion 24a to be screwed into the threaded tube 4 of the razor body A is formed in the lower end side of the through hole 24, and a rotary blade is inserted between the through holes 24 and 25. A drive shaft 26 for rotation is inserted therethrough, and a recess 26a that fits into the joint 19 and transmits rotation is formed at the lower end thereof, and a protrusion 26b for rotation transmission is formed at the upper end. A recess 27 corresponding to the outer diameter of the housing 1 is formed in the center of the outer surface of the base 21, a female thread 27a to be screwed into the threaded cylinder 4 is formed in the center, and a hole 27b is formed in the center. . On the other hand, a large notch 22a is formed on the peripheral side of the outer cutter body 22, and the outer cutter 22 is opened from the inside.
is fitted and bent into a semi-cylindrical shape to close the notch 22a, and a pair of tension coil springs 29 are stretched between the outer cutter 28 and the base 21 inside both ends of the outer cutter 28. It is biased toward the inner base 21 side. An inner cutter body 31 with a large number of arcuate inner cutters 30 arranged in the longitudinal direction of the side surface.
A through hole 32 is formed in the longitudinal direction of the drive shaft 26, and the drive shaft 26 is passed through the through hole 32 and supported so as to be slidable back and forth. Tension coil spring 29 on the cutting edge of 30
The outer cutter 28 is pressed by. Further, a long hole 33 in the width direction is formed in the central part of the back side of the inner blade body 31, and the tip shaft 34a of the rotation/reciprocating conversion mechanism 34, which is an example of an eccentric shaft, is inserted into the long hole 33 through the hole 27b of the female threaded portion 27a. Rotating/reciprocating conversion mechanism 3 with non-removal fitting
The rear end of 4 forms a recess 34b into which rotation transmission is fitted into the joint 19, and when the tip shaft 34a of the rotation/reciprocating conversion mechanism 34 rotates within the elongated hole 33, rotational motion is converted into reciprocating motion. The inner cutter body 31 is supported by the drive shaft 26 and reciprocates stably. Furthermore, fourth and fifth band-shaped energizing metal fittings 35 and 36 are attached to the blade holder 20 to constitute a floating switch S (FIG. 10). These current-carrying metal fittings 35 and 36 each have an arcuate plate 35 at both ends.
a, 35b, 36a, 36b at right angles, and is fitted into a groove 37 formed at the joint between the base 21 and the outer blade 22, and the arc plates 35a, 35b, 36a, 36b
It is fixed by claws 38 protruding from both ends of the blade, and at the same time serves to connect the base 21 and the outer blade body 22.
The arcuate plates 35b and 36b serve as fixed contacts of the opposing floating switch S. With this configuration, when the female threaded portion 24a at the end of the reciprocating blade B is screwed into the threaded tube 4 of the razor body A, the joint 1
9 and the recess 26a of the drive shaft 26 are fitted, and the arc plate 16a of the second and fourth energizing fittings 16, 35,
35a are in contact with each other, and the arcuate plates 17a, 37a of the third and fifth current-carrying metal fittings 17, 36 are in contact with each other. Further, when the female threaded portion 27a of the base 21 is screwed into the threaded tube 4 of the razor main body A, the joint 19 and the recessed portion 34b of the rotation/reciprocation conversion mechanism 34 are fitted. Note that the surface of the outer cutter 28 is covered with a protective cover 39 when not in use.

The rotary blade C has a partially spherical net-like outer cutter 41 fitted from the inside into the upper end of a cylindrical outer cutter body 40 having the same diameter as the housing 1, a female threaded portion 40a is formed at the lower end of the outer cutter body 40, and a female screw portion 40a is formed at the lower end of the outer cutter body 40. The ring plate-shaped contact fitting 42 that becomes the movable contact of the floating switch S is attached to the claw 42.
It is attached by a. On the other hand, a coil spring 44 is fitted inside a cylinder 43 formed inside the arcuate plates 35b and 36b at the upper end of the reciprocating blade B, and the cylinder 43
The joint 45 is fitted into the convex portion 26b of the drive shaft 26 that protrudes inward for rotation transmission, and the coil spring 4 is secured by the collar 45a formed on the joint 45 which also serves as a stopper.
It is attached to the upper end of 4. Pass the center hole 46b of the lid 46, which has a male threaded portion 46a on the periphery, through the joint 45 and hook it onto the stopper collar 45a, and then tighten the two screws 47.
It is attached to the upper end surface of the cylinder 43 by. An inner cutter body 49 having a plurality of inner cutters 48 arranged radially is attached to the upper end of the joint 45. Furthermore, a compression coil spring 50 is installed inside the outer blade body 40 to form a female threaded portion 40a.
is screwed into the lid 46 until it is unscrewed, compressing the compression coil spring 50. In this way, the outer blade body 4
0 is pressed against the reciprocating blade B, the coil spring 50 is bent and at the same time the coil spring 44 is compressed and the inner blade 4
8 comes into elastic contact with the inner surface of the outer cutter 41, and when the rear end of the outer cutter body 40 comes into contact with the upper end of the reciprocating blade B, the contact fitting 42 contacts the arc plate 35b of the fourth and fifth current-carrying fittings 35 and 36. , 36b, and the floating switch S is closed.

Figures 1 and 3 show the rotary blade in use.
In this case, the outer blade 41 of the rotary blade C is pressed against the skin and the contact fitting 42 is used in contact with the arcuate plates 35b and 36b. As a result, the floating switch S connected in parallel to the switch 14 is closed as shown in FIG.
The inner cutter body 49 rotates via the joint 45.
Therefore, since the motor 7 can be operated only when shaving, the battery 13 can be saved. FIG. 9 shows the reciprocating blade in use. In this case, when the switch 14 is turned on, the rotation/reciprocating conversion mechanism 34 is rotated by the operation of the motor 7, so that the inner blade 31 is supported by the drive shaft 26 and reciprocates. The contact state between the inner cutter 30 and the outer cutter 28 is maintained by a spring 29.

FIG. 11 shows a modification of the rotary blade for shaving nose hair. That is, the outer cutter 41' is shaped like a protrusion that can be inserted into the nostril, and the inner cutter 48' of the inner cutter body 49' is brought into contact with the inner peripheral surface of this protrusion. The other configuration is the same as that of the rotary blade.

As described above, the electric shaver of the present invention includes a reciprocating blade, a rotary blade connected to one end of the reciprocating blade in the reciprocating direction, and a rotary blade connected to the other end of the reciprocating blade in the reciprocating direction and an intermediate portion of the reciprocating blade. a razor body that is connected and has a built-in motor that has a motor shaft;
a rotation/reciprocation conversion mechanism provided in the intermediate portion and connected to the motor shaft; a rotation/reciprocation conversion mechanism that penetrates in the reciprocating direction of the inner cutter body of the reciprocating blade and connects one end to the inner cutter body of the rotary blade; Since it includes a drive shaft whose end portion is connected to the motor shaft, the following effects can be obtained.

In other words, compared to a structure in which the inner cutter body of the reciprocating blade is supported reciprocally independently of the drive shaft, the structure is simpler and can be formed into a smaller size, making it easier to use and more portable. It has the effect of not inhibiting movement.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention with the protective cover removed, Fig. 2 is a partial perspective view of the razor body, Fig. 3 is a sectional view of the rotary blade in use, and Fig. 4
The figure is a cross-sectional view of the line, and Figure 5 is Figure 3.
Line sectional view, Fig. 6 is a line sectional view of Fig. 3 - line sectional view, Fig. 7
The figures are a sectional view taken along the lines shown in Fig. 3, Fig. 8 an exploded perspective view, Fig. 9 a partial sectional view of the reciprocating blade in use, and Fig. 1
0 is a motor drive circuit diagram, and FIG. 11 is a sectional view of the rotary blade for shaving nose hair. A... Razor body, B... Reciprocating blade, C... Rotating blade, 7... Motor, 8... Motor shaft, 26...
Drive shaft, 31... Inner blade body of reciprocating blade, 34... Rotation/reciprocating conversion mechanism, 49, 49'... Inner blade body of rotary blade.

Claims (1)

[Claims] 1. A reciprocating blade, a rotary blade connected to one end of the reciprocating blade in the reciprocating direction, and a built-in motor selectively connected to the other end and intermediate portion of the reciprocating blade in the reciprocating direction and having a motor shaft. a rotating/reciprocating conversion mechanism provided in the intermediate portion and connected to the motor shaft; and a rotating/reciprocating converting mechanism provided in the intermediate portion and connected to the motor shaft; an electric shaver comprising: a drive shaft connected to the motor shaft and having the other end connected to the motor shaft;