JPS63174686A - Electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electric shaver using a battery as a power source.

[Conventional technology]

Conventionally, there are two examples of battery-powered electric shavers.

As shown in Japanese Utility Model Publication No. 51-29197, a battery case is made separately from the main body case that also serves as a grip and has a built-in motor, and this battery case is fitted below the motor in the main body case, and the battery is inserted into the battery case. There is one that can be loaded into the

However, when assembling the motor inside the main body case, this electric shaver adopts a configuration in which a motor mounting base is made separately from the main body case, the motor is mounted on this motor mounting base, and then the motor is assembled into the main body case. Therefore, not only is it extremely troublesome to assemble the motor, but it also tends to be time-consuming, especially in aligning the cathode terminal of the motor with the cathode of the battery. Furthermore, the switch opening/closing member interposed between the motor and the cathode terminal of the battery is attached to the bottom of the main body case, but this positioning and attachment tends to be difficult.

[Problems to be Solved by the Invention] The present invention provides a motor for the conventional battery-powered electric shaver,
It is an object of the present invention to provide an electric shaver that solves problems in assembling a battery, a switch opening/closing member, etc., and thereby improves the ease of assembling the electric shaver as a whole.

[Means for solving problems]

In order to simplify the incorporation of the motor 4 into the main body case 1, the present invention forms an upwardly open motor storage cylindrical portion 7 in the upper part of the battery case storage chamber 9 in the second main body case 1. The motor 4 is directly housed in the motor housing cylindrical part 7 from the open upper side.

In addition, this invention provides a method for attaching the negative and anode terminal plates 20 to the main body case 1.
・To simplify the assembly of 19.

The battery case 8 stored in the battery case storage chamber 9 from its open bottom is formed into a cylindrical shape with an open bottom, and the battery 6 can be taken in and taken out from the open bottom.

On the outer surface of the cylinder upper wall 8a, cathode and anode terminal plates 20 and 19 are mounted, which contact the cathode and anode terminals of the battery 6, respectively.

Furthermore, the present invention incorporates the motor 4 and the battery case 8 into one main body case 1, and at the same time establishes the connection between the negative and positive terminals between them.

Openings 26 and 24 are provided at the bottom 7a of the motor storage cylinder 7 to correspond to the negative and anode terminal plates 20 and 19. A positioning means for regulating the storage direction is provided, and one terminal plate (20 or 19) of the cathode and anode is connected to the opening 24 (see FIG. 7) through this positioning means.
The other terminal plate (19 or 20) contacts the terminal on the same side of the motor 4 through the opening 26 so as to be able to come into and out of contact with the terminal on the same side as the terminal of the motor 4 through the opening 26. It was assumed that this corresponds to

Furthermore, the present invention provides a chamber 60 in which the switch opening/closing member 50 is housed in the main body case 1 in order to inspect poor contact between the negative and anode terminal plates 20 and 19 during assembly and to simplify the drive test of the motor 4. are lined up in the motor storage cylindrical portion 7 to form a section, and an opening 61 is provided in the bottom 60a of the chamber 60 to correspond to the position of the switch opening/closing member 50, and the switch opening/closing member 50 is positioned by the positioning means of the battery case 8. It is arranged to come into contact with the terminal plate 19 on the removable side through the opening 61.

〔Effect of the invention〕

According to the present invention, the upper open type motor housing cylinder part 7 is integrally formed in the two-body case 1, and the motor 4 is directly stored in this. Compared to the case where the motor is attached and assembled into the main body case, the motor 4 can be assembled very easily.

In addition, since the negative and anode terminal plates 20 and 19 are attached to the outer surface of the cylindrical upper wall 8a of the battery case 8 stored in the battery case storage chamber 9, the negative and anode terminal plates 20 and 19 are attached to the inside of the main body case 1. 19 complicated assemblies can be omitted.

Further, openings 26 and 24 are provided at the bottom 7a of the motor housing cylinder 7.
are provided to correspond to the negative and anode terminal plates 20 and 19, while positioning means is provided between the main body case 1 and the battery case 8 for regulating the storage direction of the battery case 8 with respect to the battery case storage chamber 9. hand.

One terminal plate (2
0 or 19) contacts the terminal of the motor 4 on the same polarity side through the opening 24, and the other terminal plate (19 or 20) contacts the terminal of the motor 4 through the opening 26. Since the motor 4 and the battery case 8 are assembled into one main body case 1, since the terminals are brought into contact with and separated from terminals on different sides, it is possible to connect the negative and positive terminals between the two at the same time.

Furthermore, an opening 61 is provided in the bottom part 60a of the switch opening/closing member storage chamber 60 which is partitioned in parallel to the motor housing cylindrical part 7 in the two-body case 1, and the switch opening/closing member 50 is connected and separated through this opening 61. Since the switch opening/closing member 50 is installed in the main body case 1, it can be operated to open and close to check for poor contact between the negative and anode terminal plates 20 and 19, and to inspect the motor 4. It has the advantage that driving tests can be easily performed, and that defective parts can be repaired easily.

〔Example〕

An embodiment of the electric shaver according to the present invention will be described based on the drawings.

This example shows a battery-powered electric shaver that can be washed with water, and its outline is as follows.

The upper part of the main body case 1 which also serves as a gripper is provided with an outer cutter 2 and a rotary inner cutter 3 as shown in FIG. 1, and a comb blade unit 65 as shown in FIG. The motor 4 is driven by using a battery 6 housed in the comb as a power source, and the motor 4 rotates the inner cutter 3 or causes the movable comb blade 67 of the comb blade unit 65 to reciprocate linearly.

In Fig. 1, a main body case 1 which also serves as a single grip is a plastic molded product formed into a conical shape that spreads downward, and the inside thereof has an upper opening into which a motor 4 is dropped and stored from above. Type motor storage cylinder part 7
are integrally formed.

An open-bottom battery case storage chamber 9 is formed below the motor storage cylindrical portion 7 in the main body case 1, into which a battery case 8 is fitted concentrically from its open bottom. As shown in FIG. 7, the cross-sectional shape of the motor storage cylinder 7 is formed to match the outer shape of the motor 4 having parallel flat surfaces 4a, so that the motor 4 can be stored in a fixed orientation.

In FIG. 2, the battery case 8 is a plastic molded product formed into an open-bottom cylindrical shape that can store a AA battery 6 vertically. As shown in FIG. 8, the battery case 8 has flanges 29 integrally projecting outward from the lower circumferential surface. Further, as shown in FIGS. 2 and 4, one side (see FIG. 4) of the lower peripheral surface of the battery case 8 where the flange 29 extends and the other side (see FIG. 2) ) is provided with a cut groove 30 having a U-shape when viewed from the front to form an elastic wall piece 31 that can be elastically deformed in the radial direction using the upper end 31a connected to the battery case 8 as a fulcrum. The elastic wall piece 31 is located on one side (fourth side) on the lower peripheral surface of the battery case 8.
One side (see figure) and two on the other side (see figure 2). As shown in FIG. 8, at the lower end of each elastic wall piece 31, an engaging pawl 32 that protrudes slightly longer radially outward than the outer peripheral edge of the flange 29 is provided between the flanges 29 and on the same plane. It is integrally formed.

In FIGS. 1 and 2, the battery case 8 includes a battery 6.
An anode terminal plate 19 and a cathode terminal plate 20 connecting the motor 4 and the motor 4 are attached in advance. As shown in FIG. 5, the anode terminal plate 19 is made of an elastic conductive metal plate that is pressed into a generally U-shape when viewed from above, and its longitudinal intermediate portion 19a is connected to the battery case 8. It is caulked and welded to the upper surface side of the upper wall 8a using a welding pin 21. As shown in FIG. 1, the contact 19b at one end of the anode terminal plate 19 in the longitudinal direction is introduced into the inner surface through the notch 22 of the upper wall 8a, and the battery 6 in the battery case 8 is
The contact point 19C at the other end is in contact with the anode terminal 23 at the upper end of the
As shown in FIG. 4, it is elastically deformable in the vertical direction on the upper wall 8a. on the other hand.

The cathode terminal plate 20 is attached to the outer surface of the peripheral wall of the battery case 8 in the vertical direction. As shown in FIGS. 1 and 2, the contact 20a at the upper end of this cathode terminal plate 20 is provided to protrude upward from the upper wall 8a of the battery case 8, and the lower end of the cathode terminal plate 20 is provided with a battery cover 36. A conical coil spring 28 which comes into contact with the cathode terminal 27 on the lower end side of the battery 6 under the pressing action of is rotatably connected to one end of the conical coil spring 28 .

Thus, the battery case 8 is fitted into the battery case storage chamber 9 of the main case 1 from the open bottom, but at this time, there is a gap between the inner circumference of the main case 1 and the mounting position of the motor 4 as shown in FIG. By forming a space S that gradually becomes wider as it goes downwards from approximately the lower end of the housing, resonance of the main body case 1 and the battery case 8 caused by the vibrations of the motor 4 and the inner blade 3 can be damped as much as possible. or can be prevented.

Further, the battery case 8 reliably maintains the space S between the battery case 8 and the inner circumferential surface of the main body case 1 by bringing the outer peripheral edge of the flange 29 into contact with the lower end of the inner circumferential surface of the main body case 1 .

When the battery case 8 is fitted, the elastic wall piece 31 is elastically deformed inward in the radial direction, the engaging claw 32 is inserted into the inner peripheral surface side of the opening lower edge 34 of the main case 1, and the case 1 is slid upward. It engages with a retaining hole 35 provided on the lower circumferential surface (see FIGS. 1 and 8). Due to this connection, the battery case 8
is prevented from being pulled out downward from the main body case 1 and from wobbling within the main body case 1.

As shown in FIG. 1, the tip of the engagement claw 32 of the battery case 8 is tapered 32a. According to this.

When fitting the battery case 8 into the main body case l, taper 3
2a hits the opening lower edge 34 of the main body case 1, and at this time, by pushing the battery case 8 upward a little forcefully, the taper 3 is caused to elastically deform inward in the radial direction of the elastic wall piece 31.
2a slides along the lower edge 34 of the opening and enters the inner surface thereof, so that it can be fitted smoothly.

Further, as shown in FIG. 1, a reinforcing rib 33 is provided at the corner where the elastic wall piece 31 and the engaging claw 32 intersect, which also serves as a guide when the battery case 8 is fitted into the main body case 1.

As shown in FIG. 8, recesses 38 are provided at several locations around the periphery of the flange 29 of the battery case 8, while ribs 39 that fit into the recesses 38 are provided on the inner peripheral surface of the lower end of the opening of the main body case 1. The concave portion 38 and the tab 39 constitute positioning means for the battery case 8 so that the battery case 8 is stored in a fixed orientation with respect to the main body case 1.

In this way, the battery case 8 is stored in the main body case 1 in a predetermined orientation via the positioning means.

The contact 19c of the anode terminal plate 19 is in elastic contact with the anode terminal 25 of the motor 4 facing the opening 24 (see FIG. 7) provided in the bottom 7a of the motor housing cylinder 7, and the cathode terminal plate 20
A contact point 20a at the upper end of the motor housing cylindrical portion 7 elastically contacts the cathode case 4a of the motor 4 facing an opening 26 in a part of the peripheral wall of the motor housing cylinder portion 7.

In FIG. 1, a screw 37 is carved on the outer periphery of the lower end of the case 1 having the engagement hole 35. As shown in FIG.

The battery cover 36 is screwed into this. As shown in FIG. 2, the lower end 8b of the battery case 80 is set to such a length that it protrudes downward from the lower edge 34 of the opening when it is fitted into the main body case 1. If the lower end 8b of the battery case 8 protrudes from the lower opening edge 34 of the main case 1 in this way, it becomes easier to insert the battery 6 into the battery case 8, and it is also possible to remove the battery M36 and place the main case 1 on a tabletop or the like. When the battery case 8 is stood up, the lower end of the battery case 8 sits on the tabletop, and the lower edge 34 of the opening of the main case 1 can be lifted off the tabletop.
The screws 37 carved on the outer periphery of the tabletop are protected from rubbing against each other.

In the figure, the battery cover 36 is formed into a round dish shape that spreads upward, and a waterproof rubber or plastic O-ring 48 is attached to the screw 37 at the lower end of the main body case 1 so as to cover the lower end 8b of the battery case 8. Screwed through. The upper end circumferential surface of the battery M36 and the lower end circumferential surface of the main body case 1 form a convex curved surface with a bulge in the middle, so that the bulged portion does not give a feeling of pressure to the palm when gripped.

1 and 4, a switch opening/closing member 50 is provided between the anode terminal 23 of the battery 6 and the anode terminal 25 of the motor 4 for connecting and disconnecting both terminals 23 and 25. This switch opening/closing member 50 consists of a plunger holding base 53 and a bin plunger 52 which is slidably superimposed on the plunger holding base 53 by a predetermined stroke. Vin plunger 52
is formed by integrally molding a pin 54, a boss 55, and a pair of elastically deformable moderation arms 56. On the other hand, the plunger holding base 53 has a bottle hole 571 into which the pin 54 of the pin plunger 52 is inserted, and moderation projections 58, 58. and an elastically deformable engagement claw 59.

As shown in FIGS. 1 and 6, these pin plungers 52 and plunger holding bases 53, which are combined in advance, are connected to the inner circumferential surface of the upper part of the peripheral wall of the main body case 1 and the outer circumferential surface of the upper end of the motor housing cylinder part 7. It is dropped into the switch opening/closing member storage chamber 60 formed in between from above and installed. At this time.

As shown in FIG. 1, the pin 54 of the pin plunger 52 is inserted into the opening 61 made in the bottom 60a of the storage chamber 60 and protrudes into the battery case storage chamber 9, and the pin 54 of the pin plunger 52 is inserted into the opening 61 formed in the bottom 60a of the storage chamber 60 and protrudes into the battery case storage chamber 9. The position is set so as to press a pressing point 19d that is slightly closer to the fixed end side than the upper contact point 19C.

Furthermore, as shown in FIGS. 1 and 7, the plunger holding base 53 has an engaging claw 59 integrally formed on its upper end that engages with a retaining hole 62 provided in the upper part of the inner wall of the storage chamber 60. , so as not to shake inside the storage chamber 60.

After assembling the pin plunger 52 and the plunger holding base 53, the switch knob 51 inserts the pin 51a, which is integrally provided on the knob 51, through the hole 63 opened at the upper part of the outer peripheral surface of the main body case 1, and inserts it into the boss 55 of the pin plunger 52. By inserting.

It is integrally coupled with the pin plunger 52. Therefore, under normal conditions, the switch knob 51 is in the lower OFF position, as shown in FIGS. 1 and 4.

Since the pin plunger 52 presses the tip of the pin 54 into contact with the pressed portion 19d of the anode terminal plate 19 in the lowered position, the contact point 19c of the anode terminal plate 19 is separated from the anode terminal 25 of the motor 4. When the switch knob 51 is slid upward, the pressure by the pin plunger 52 is released, so that the contact point 19c of the anode terminal plate 19 is brought into contact with the anode terminal 25, thereby achieving an on state.

In addition, as shown in FIG. 1, the switch opening/closing member storage chamber 6
0 is provided on the opposite side to a drainage opening 41 which will be described later. In addition, a rubber or plastic circle 64 is interposed between the pin 54 of the pin plunger 52 and the bottle hole 61 at the bottom of the switch opening/closing member storage chamber 60, so that water enters the storage chamber 60 from the hole 63 during washing. It is designed to prevent any liquid from entering the battery case storage chamber 9.

In FIGS. 1 and 7, the double-hair tray has a drain port 40 recessed in a part of the inner bottom of the dish 10, and this drain port 40 is an opening provided in a part of the circumferential surface of the upper end of the main body case 1. 41.

On the other hand, a ring-shaped shutter 42 is fitted onto the outer circumferential surface of the upper end having the opening 41 of the main body case 1 so as to be rotatable in the circumferential direction, and a drain port 43 is provided at a part of the circumference of the shutter 42. However, the hair catcher is rotatably operable between a drain opening position where it matches and communicates with the drain opening 40 of the dish 10 and a drain opening position where the drain opening 40 is closed. As shown in FIG. 7, a moderation arm 44 that can be elastically deformed in the radial direction is connected in a cantilevered manner from a part of the inner periphery of the shutter 42, and a moderation arm 44 is provided at the tip of this arm 44, as shown in FIG. The engaging claws 45 can be freely engaged with and detached from engaging protrusions 46 and 47 provided on the outer circumferential surface of the upper end of the motor housing cylindrical portion 7 of the main body case 1.

A finger rest part 42a is provided on a part of the outer peripheral surface of the shutter 42, and as shown in FIG. 3, this finger rest part 42a is located directly above the switch knob 51 when the drain outlet is in the closed position. It is set to do so.

Therefore, when opening and closing the shutter 42, the shutter 42 can be easily opened and closed by simply moving the finger 9, usually the thumb, on the switch knob 51 upward without changing the main body case 1.

1 and 2', after the motor 4 and the switch opening/closing member 50 have been assembled, a hair tray 10 is placed on the upper opening of the main body case 1 and the motor housing cylinder 7, and a screw 1) is shown. Combined as one.

This hair holder holds down the motor 4 with a plate 10. A waterproof O-ring 48a is interposed between the upper end of the motor accommodating cylinder 7 and the overlapping surface of the hair receiver and the plate 10. The hair tray 10 has an opening 13 in the center of its bottom from which the shaft 12 of the motor 4 projects.
A screw 15 into which the outer cutter holder 14 of the outer cutter 2 is screwed into the outer periphery.
is engraved.

In addition, the two-hair receiver is located between the opening 13 in the center of the plate 10 and the motor shaft 12.
A gasket 49 made of rubber or plastic is installed between the two to close the gap therebetween and prevent hair from entering.

The hair holder is attached to the rotor 17 on the shaft 12 of the motor 4 in the dish 10.
is press-fitted and fixed, and the inner cutter holder 18 of the rotary inner cutter 3 is fitted to the outer periphery of the rotor 17 so as to be removable and non-rotating. The rotor 17 has an eccentric pin 16 at its upper end.
is provided in a protruding manner so that it can also be used as a drive shaft for a vibrating comb blade unit 65 as shown in FIG.

The comb blade unit 65 is as shown in FIG.

A cap-shaped comb blade case 70 incorporates movable and fixed comb blades 67 and 68 and a plastic vibrator 66 that engages with the movable comb blades 67. Each cutting edge is made to protrude from an opening in a part of the peripheral surface of the comb blade case 70. This comb blade unit 6
5, remove the outer cutter holder 14 of the outer cutter 2 from the hair tray 10, pull out the rotary inner cutter holder 18 from the rotor 17, and then remove the vibrator 66 of the cutter unit 65. is fitted to the eccentric pin 16 on the rotor 17, and the rotation of the eccentric pin 16 is changed into a linear reciprocating motion by the vibrator 66, and the movable comb blade 67 linearly reciprocates on the lower surface of the fixed comb blade 68. be.

The comb blade unit 65 has a chamfered portion 71 formed on the upper surface side of the comb blade case 70. As shown in Figure 1), this chamfered portion 71 is formed into a semicircular plane with the cutting edges of the comb blades 67 and 68 in the diametrical direction.

By applying this chamfered portion 71 to the skin, the comb blade 67
・The 68 blade edge makes it easy to touch the skin.

Further, as shown in FIG. 12, the chamfered portion 71 is provided with a gentle radius R so that the chamfered portion 71 contacts the skin in a point-to-point manner without making surface contact with the skin, thereby making it easier to slide on the skin.

In addition, the comb blade unit 65 is, as shown in FIG.
The comb blades 67 and 68 are set so that the finger hooks of the switch knob 51 and the shutter 42 are positioned directly above the portion 42a.

In FIG. 14, after washing the electric shaver with water, turn it upside down and insert it into the standless draining case 72 to drain the water adhering to the outer surface of the razor or pour it into the inside of the outer blade 2. The water is allowed to flow out from a large number of hair-warming holes provided in the outer blade 2. Note that the outer surface of the drainer case 72 is spirally formed with an uneven strip 73 that serves both as a drainer for water adhering to the outer surface and as an anti-slip function for the hand holding the drainer case 72, and on the bottom 72a. The drain hole 74 is opened.

[Brief explanation of the drawing]

The drawing shows an embodiment of an electric shaver according to the present invention. Figure 1 is a longitudinal side view of the whole. FIG. 2 is a longitudinal sectional front view of the main body case and battery case. FIG. 3 is a perspective view of the overall appearance. Figure 4 is a front view of the switch and battery case. FIG. 5 is a plan view of the battery case. FIG. 6 is a sectional view taken along line A-A in FIG. 1. FIG. 7 is a sectional view taken along the line B-B in FIG. 1. FIG. 8 is a sectional view taken along the line CC in FIG. 1. FIG. 9 is a sectional view taken along the line D-D in FIG. 1. FIG. 10 is an exploded perspective view of the whole. Figure 1) is a plan view of the comb blade unit. FIG. 12 is a partial vertical sectional view of the assembled comb blade unit. FIG. 13 is a front view of the comb blade unit assembled. FIG. 14 is a cross-sectional view of Ushiku cutting showing the drained state. 1... Main body case. 2... Outer blade. 3...Inner blade. 4...Motor. 6...Battery. 7...Motor storage tube. 8...Battery case. 9...Battery case storage room. 19...Anode terminal plate. 20...Cathode terminal plate. 24, 26, 61...opening. 50...Switch opening/closing member. 60...Switch opening/closing member storage chamber. 65... Comb blade unit. Inventor Einosuke Mura Patent Applicant Kyushu Hitachi Maxell Co., Ltd. Figure 1 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 1) Figure bΦ Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] (1) An open-bottom type in which the battery 6 can be taken in and taken out from the open bottom, and cathode and anode terminal plates 20 and 19 are mounted on the outer surface of the cylinder top wall 8a to make contact with the anode and cathode terminals of the battery 6. The battery case 8, the upwardly open motor storage cylinder part 7 in which the motor 4 is stored from its open top, and the open-bottom battery case storage chamber 9 in which the battery case 8 is stored from its open bottom are shown vertically. The main body case 1 is divided into sections, a chamber 60 is formed in the main body case 1 in parallel with the motor housing cylindrical portion 7 and stores the switch opening/closing member 50, and the cathode and anode terminal plates are provided at the bottom 7a of the motor housing cylindrical portion 7. 2
Openings 26 and 24 provided corresponding to the positions of 0 and 19, and an opening 61 provided in the bottom 60a of the switch opening and closing member storage chamber 60 in accordance with the position of the switch opening and closing member 50.
and positioning means provided between the main body case 1 and the battery case 8 for regulating the storage direction of the battery case 8 with respect to the battery case storage chamber 9. By storing it in the case storage chamber 9, one terminal plate (19 or 20) of the cathode and anode comes into contact with the terminal on the same polarity side of the motor 4 via the opening 24, and the other The terminal plate (20 or 19) contacts the terminal of the motor 4 on the side different from the terminal through the opening 26, and the switch opening/closing member 50 contacts the terminal on the side which can be connected and separated through the opening 61. An electric shaver characterized in that the electric shaver is brought into contact with a terminal plate 19 of the electric shaver.