JPS6110622Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric shaver, and relates to a switch structure provided in a cylindrical body.

Conventional electric shavers of this type are, for example, published in Japanese Patent Application Publication No. 1983
- As described in Publication No. 156758, a structure in which a switch for opening and closing the power supply circuit of the motor is provided in the space formed between the inner surface of the cylindrical body and the motor or battery holder provided inside the body. However, with this structure, a space for the switch must be formed inside the main body, and by forming a space for the switch mechanism, the entire main body becomes large. This was an obstacle to miniaturization.

The present invention was developed in view of the above-mentioned drawbacks, and includes a switch contact piece and an operating knob that are clamped and held between the main body and a battery holder that is inserted and fixed into the main body, and are formed on the outer peripheral surface of the battery holder. By arranging the switch contact piece and the operating knob on the cut surface, the switch mechanism can be incorporated without creating a space for arranging the switch mechanism in the main body, making it possible to make the main body ultra-slim and improving ease of assembly. An improved electric shaver is provided.

The electric razor of the present invention has a razor blade assembly attached to its tip, houses an electric motor for operating the movable blade of the razor blade assembly, and a battery as a power source for the electric motor, and opens and closes an electric circuit between the electric motor and the battery. A main body provided with a switch is formed into a cylindrical shape, and a cathode piece that comes into contact with the cathode of the battery through the inner surface of the main body and a battery holder inserted and fixed in the main body, and a cathode piece that comes into contact with the cathode piece and the An operation knob body having a switch contact piece provided inside the main body and connected to and separated from a fixed contact piece constituting the switch, and a knob operation part exposed outside the main body is clamped and held, and the outer circumferential surface of the battery holder is The invention is characterized in that a switch contact piece and an operating knob are disposed on the cut surface formed in the cut surface.

In the electric shaver of the present invention, when the operating knob is moved, the switch contact piece is moved along the cutting surface of the battery holder, and is brought into contact with and separated from the fixed contact piece. A battery circuit is formed and the motor is activated or stopped.

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes a razor body, which is composed of a lower body member 2 and an upper body member 3. The lower body member 2 is made of synthetic resin or the like and is molded into an elongated cylindrical shape with a bottom. A mounting hole 4 is formed. Further, an opening 5 is formed in the lower part of the circumferential side of the lower main body member 2.

Further, the upper main body member 3 is molded from synthetic resin or the like into an elongated cylindrical shape with an open lower end surface. A shaft insertion hole 6 is provided in the center of the upper end surface of the upper body member 3.
A protrusion 7 is formed, and this protrusion 7
A locking pawl 8 is provided on the outside of the holder.

Next, a motor 9 is fitted into the upper main body member 3, and the rotating shaft 10 is projected from the shaft insertion hole 6.
The upper end of this electric motor 9 is fixed to the upper body member 3 with a screw 11.

Next, reference numerals 12 and 13 denote battery holders, each made of an insulating material such as a synthetic resin and formed into a cylindrical shape with an outer diameter that fits into the main body members 2 and 3, and the upper battery holder 12 has an open bottom. Approximately L-shaped locking pieces 14 and 15 are provided symmetrically and protruding downward from the lower opening edge, and each of the locking pieces 14 and 15 has a locking edge 17 at its tip. A latching protrusion 18 is provided in a protruding manner. This upper battery holder 12 is fixed to the lower end of the electric motor 9 with a screw 19, and the hooking pieces 14 and 15 of this upper battery holder 12 are located inward from the lower end opening of the main body member 3. It is becoming more and more common.

Further, the lower battery holder 13 has an open upper surface, and approximately L-shaped hooking pieces 20 and 21 are provided symmetrically and protruding upward from the upper opening edge, and each of the hooking pieces A latching protrusion 23 is provided at the tip of the latching edge 22 of 20, 21 in a protruding manner. Further, a cut surface 24 is formed which is located in the middle of the protruding positions of the hooking pieces 20 and 21 of the lower battery holder 13 and is cut leaving the upper end. A kerf 25 that is open at the upper end is formed in the center. The lower end surface of the lower battery holder 13 is fixed within the lower body member 2 with a screw 26 inserted through the mounting hole 4 of the lower body member 2.
The latching pieces 20 and 21 of the lower battery holder 13 protrude from the upper opening surface of the lower body member 2, and the latching pieces 20 and 21 of the lower battery holder 13 are attached to the lower opening surface of the upper body member 3. into the upper battery holder 12.
4 and 15, and by rotating the lower main body member 2 in one direction (clockwise in FIG. 3), the latching pieces 15, 16, 2 of both battery holders 12, 13 are
The locking edges 22, 22 of 0, 21 engage with each other,
The main body members 2 and 3 are combined to form the main body 1, and the main body 1 is divided into two parts at the battery storage portions 27 of the main body members 2 and 3.
That is, a battery storage section 27 is formed within the main body 1 by both the holders 12 and 13.

Further, reference numeral 28 denotes a fixed contact piece whose base end 29 is formed into an annular shape and into which the rotating shaft 10 of the electric motor 9 is inserted. This fixed contact piece 28
Contact pieces 31 and 32 are integrally provided to protrude downward from opposing positions on the outer peripheral edge of the base end. This fixed contact piece 28 has its base end 29 connected to the upper body member 3.
The motor 9 and the fixed contact piece 28 are fixed to the upper main body member 3 by the screw 11 which is inserted between the inner surface of the upper end and the upper end part of the electric motor 9, and the contact pieces 31, 32 of the fixed contact piece 28 is attached to the inner surface of the upper body member 3.

Reference numeral 33 denotes an anode piece, which is provided on the upper end surface of the upper battery holder 12 so that the anode 35 of the dry battery 34 inserted into the upper battery holder 12 comes into contact with the anode piece 33. The fixed contact piece 28 is connected to one terminal of the electric motor 9.
is fixed to the other terminal with the screw 11.

36 is a cathode piece, and the base end 3 of this cathode piece 36 is
7 is formed in an annular shape, and an elastic curved portion 38 is integrally formed in an arc shape from the outer peripheral edge of this base end portion 37, and the lower battery holder 1 is attached to the tip of this curved portion 38.
A contact piece portion 40 is formed with which the cathode 39 of the dry battery 34 inserted into the battery 3 comes into contact. The contact piece 40 of the cathode piece 36 is inserted into the inner bottom surface through the cut groove 25 of the lower battery holder 13, and the curved part 38 is led out from the cut groove 25, and the base end part 37 is inserted into the inner bottom surface of the lower battery holder 13. It is clamped between the bottom surface of the battery holder 13 and the inner bottom surface of the lower main body member 13 and fixed together with the lower battery holder 13 using the screws 26 .

Next, 41 is a switch 42 with the fixed contact piece 28.
This switch contact piece 4 constitutes the switch contact piece 4.
Reference numeral 1 has a width corresponding to the cut groove 25 of the lower battery holder 13, and an elastic articulated portion 43 is formed in a curved manner at the lower end thereof to be brought into contact with the curved portion 38 of the cathode piece 36. Further, a contact portion 44 which is brought into contact with and separated from either one of the contact portions 31 and 32 of the fixed contact piece 28 is formed in a bulging manner at the tip of the switch contact piece 41 . Further, the cut surface 24 of the lower battery holder 13 and the lower body member 2 are connected to the upper part of the switch contact piece 41.
A clamping piece 45 is formed perpendicularly to be slidably clamped to the inner surface of the housing. Further, a locking hole 46 is formed in the center of the switch contact piece 41.

Further, 47 is an operation knob, and the lower body member 2
A knob operation part 48 that is slidably engaged with the opening 5 is formed protrudingly formed in a circular shape on the outer surface, which is formed into an arcuate surface so as to be able to slide in the axial direction along the inner surface. A protruding shaft 49 that is engaged with the locking hole 46 of the switch contact piece 41 is formed protruding from the inner surface of the operating knob 47 . And this operation knob body 47
is held slidably in the axial direction between the cutting surface 24 of the lower battery holder 13 and the inner surface of the lower main body member 2, and the protruding shaft 49 is slidably held in the axial direction by sliding the operating knob 47.
The switch contact piece 41, which is engaged with the locking hole 46, can be moved up and down. This switch contact piece 41 is connected to the hooking piece 14 of the upper battery holder 12,
15 and the locking pieces 20, 21 of the lower holder 13, the switch contact piece 41 is brought into contact with or separated from one of the contact pieces 31, 32 of the fixed contact piece 28. That is, there is a two-way engagement mode in which one of the latching pieces 20 of the lower battery holder 13 is engaged with one of the latching pieces 14 or the other latching piece 15 of the upper holder 12. Both main body members 2,
In either of the three two-way engagement modes, the switch contact piece 41 can move toward or away from either of the contact piece parts 31, 32 of the fixed contact piece 28.

Reference numeral 50 denotes a razor blade assembly, and a crank arm 51 is detachably connected to the upper end of the main body 1 by an engaging claw 8 and formed on the rotating shaft 10 of the electric motor 9.
A movable blade 52 that is engaged with the movable blade 52 and a fixed blade 53 on which the movable blade 52 slides are incorporated, and the movable blade 52 is reciprocated by the drive of the electric motor 9.

Next, the operation of this embodiment will be explained.

Insert the dry battery 34 into either one of the main body members 2, 3, and remove the battery holders 12, 13 of both main body members 2, 3.
When the hooking pieces 14, 15, 20, and 21 are engaged, the dry battery 34 is stored in the battery storage section 27 formed between the battery holders 12 and 13 by the connection of the main body members 2 and 3. . In addition, both battery holders 12,
When the latching pieces 14, 15, 20, 21 of 13 are engaged, the latching protrusions 18, 23 are engaged with each other, and the contact piece 40 of the cathode piece 36 of the dry battery 34 is connected to the elasticity of the curved part 38. Because it is pressed by the latching protrusion 18,
23 is prevented from rotating and is held without disengaging,
Both main body members 2 and 3 never come out of engagement.

Further, due to the connection between the two main body members 2 and 3, the switch contact piece 41 is located at a position where it can come into contact with either one of the contact piece parts 31 and 32 of the fixed contact piece 28.
When the operating knob 47 is moved upward, the switch contact piece 41 engages with the protruding shaft 49, so that the switch contact piece 41 cuts into the cut groove 25 of the lower battery holder 13, and its clamping piece 45 engages with the cutting surface 25. The contact portion 44 is moved along the contact piece portion 3 of either one of the fixed contacts 28.
1, the anode 35 of the dry battery 34, the motor 9, the fixed contact piece 28, the switch contact piece 41, the cathode piece 3
6 and the cathode 39 of the dry battery 34, a circuit is formed, the electric motor 9 is driven, and the movable blade 52 is reciprocated to perform a shaving operation. Further, when the operating knob 47 is lowered, the switch contact piece 41 is lowered, and the contact piece 41 is released from the fixed contact piece 28, and the electric motor 9 is stopped.
When the switch contact piece 41 moves, its articulating portion 43 slides into engagement with the curved portion 38 of the cathode piece 36, providing a feeling of articulation and maintaining the switch in the open or closed state.

In the above embodiment, the razor blade assembly 50 has a structure in which the movable blade 52 moves back and forth, but it may also have a structure in which a rotating inner blade as a movable blade slides along the inner surface of a reticulated outer blade.

According to the present invention, a cathode piece that contacts the cathode of the battery through the inner surface of the main body and a battery holder inserted and fixed into the main body, a switch contact piece that comes into contact with this cathode piece and constitutes a switch, and an operation Since the switch contact and the operating knob are arranged on the cut surface of the outer peripheral surface of the battery holder, the switch contact piece and the operating knob are arranged on the thick part of the battery holder. This eliminates the need for space in the main body to accommodate a switch consisting of a switch contact piece and an operating knob, making the main body extremely thin and compact, making it especially suitable as a women's razor, and improving ease of assembly. It is something that will be done.

By bending the articulating part that contacts the curved part of the cathode piece on the switch contact piece, a sense of moderation can be obtained with a simple structure, and the switch can be prevented from opening or closing accidentally.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electric shaver showing an embodiment of the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is an exploded perspective view of the same. DESCRIPTION OF SYMBOLS 1... Main body, 9... Electric motor, 13... Battery holder, 24... Cutting surface, 28... Fixed contact piece, 36...
... Cathode piece, 38 ... Curved part, 39 ... Cathode, 34
...Dry battery, 42...Switch, 43...Article, 47...Operation knob body, 48...Knob operation unit,
50...Razor blade assembly, 52...Movable blade.

Claims (1)

[Claims for Utility Model Registration] (1) A razor blade assembly is attached to the tip of the razor blade assembly, and an electric motor for operating the movable blade of the razor blade assembly and a power source battery for the electric motor are housed, and electricity between the motor and the battery is provided. A main body provided with a switch for opening and closing a circuit is formed into a cylindrical shape, and a cathode piece is brought into contact with the cathode of the battery through the inner surface of the main body and a battery holder inserted and fixed in the main body, and this cathode piece an operating knob body having a switch contact piece that is in contact with the main body and is brought into contact with and separated from a fixed contact piece constituting the switch, and a knob operating part that is exposed outside the main body, and the battery holder; An electric shaver characterized in that a switch contact piece and an operating knob are disposed on a cutting surface formed on the outer peripheral surface of the body. (2) The electric shaver according to claim 1 of the utility model registration, characterized in that the switch contact piece has a bent joint part that slides into contact with the curved part of the cathode piece.