JPH0824770B2 - Electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electric shaver using a battery as a power source.

[Conventional technology]

Conventionally, as a battery type electric shaver, for example,
As shown in Japanese Patent Publication No. 51-29197, a battery case is formed separately from the main body case for holding and incorporating a motor, and the battery case is fitted into the main body case below the motor to load the battery into the battery case. There are things I tried to do.

However, this electric razor takes a form in which a motor mounting base is formed separately from the main body case when the motor is mounted inside the main body case, and the motor is mounted on the motor mounting base and then mounted in the main body case. Because
Not only is it troublesome to assemble the motor, but it is also troublesome to align the cathode terminal of the motor and the cathode of the battery. Further, the switch opening / closing member interposed between the motor and the cathode terminal of the battery is mounted on the bottom of the main body case, but this positioning mounting tends to be difficult.

[Problems to be solved by the invention]

The present invention provides an electric shaver capable of solving the problems of assembling a motor, a battery, a switch opening / closing member and the like of the conventional battery type electric shaver, and thereby improving the assembling property of the electric shaver as a whole. With the goal.

[Means for solving problems]

In order to simplify the assembling of the motor 4 into the main body case 1, the present invention divides and forms an upper open type motor storage cylinder portion 7 in the upper part of the battery case storage chamber 9 in the main body case 1. The motor 4 is directly housed in the motor housing cylinder 7 from above the opening.

In addition, the present invention relates to a cathode / anode terminal board 20 for the body case 1.
In order to simplify the assembling of 19, the battery case 8 to be stored from the open bottom of the battery case storage chamber 9 is formed in a cylindrical shape with an open bottom, and the battery 6 can be freely taken in and out from the open bottom. The battery 6 on the outer surface of the cylinder upper wall 8a.
Cathode terminal plate 20 that contacts the cathodic anode terminal of
It is equipped with 19.

Further, according to the present invention, the motor 4 and the battery case 8 are incorporated into the main body case 1, and at the same time, in order to obtain the connection state of the positive and negative electrode terminals between them, the opening 26. Is provided so as to correspond to the negative and positive electrode terminal plates 20 and 19, and a positioning means for restricting the storage direction of the battery case 8 with respect to the battery case storage chamber 9 is provided between the main body case 1 and the battery case 8. One terminal plate (20 or 19) of the negative and positive electrodes is connected to the opening through the matching means.
24 (see FIG. 7), which is in contact with and separable from the terminal of the same polarity side as that of the motor 4 and the other terminal plate (19 or
20) contacts the terminal of the motor 4 on the side different from the terminal through the opening 26.

Furthermore, in order to facilitate the inspection of the contact failure of the negative and positive terminal plates 20 and 19 and the drive test of the motor 4 during assembly, the present invention provides a chamber 60 for housing the switch opening / closing member 50 in the main body case 1. Are formed side by side in the motor housing cylindrical portion 7, and an opening 61 is provided in the bottom portion 60a of the chamber 60 corresponding to the position of the switch opening / closing member 50, and the switch opening / closing member 50 is moved by the alignment means of the battery case 8. The terminal plate 19 on the side that can be contacted and separated is abutted through the opening 61.

〔The invention's effect〕

According to the present invention, since the motor housing cylinder portion 7 of the upper open type is integrally formed in the main body case 1 and the motor 4 is housed directly therein, the above-described conventional motor mounting base is used. The motor 4 can be installed very easily as compared with the case where the motor is installed and installed in the main body case.

In addition, the battery case 8 stored in the battery case storage chamber 9
Since the cathode and anode terminal plates 20 and 19 are mounted on the outer surface of the upper wall 8a of the cathode, the cathode and anode terminal plates 20 to the inside of the main body case 1 are attached.
・ 19 complicated assembly can be omitted.

Further, openings 26 and 24 are provided in the bottom portion 7a of the motor housing cylindrical portion 7 so as to correspond to the negative and positive electrode terminal plates 20 and 19, while the battery for the battery case storage chamber 9 is provided between the main body case 1 and the battery case 8. A positioning means for restricting the storing direction of the case 8 is provided, and one terminal plate (20 or 19) of the cathode and the anode is provided on the same pole side as that of the motor 4 through the opening 24 through the positioning means. Since it contacts the terminal and the other terminal plate (19 or 20) contacts the terminal of the motor 4 on the side different from the terminal through the opening 26, the main body case It is possible to install the motor 4 and the battery case 8 to the unit 1 and simultaneously obtain a connection state between the positive and negative electrode terminals of the both.

Further, an opening 61 is provided in a bottom portion 60a of a switch opening / closing member storage chamber 60 formed by being arranged side by side in the motor housing cylinder 7 in the main body case 1, and the switch opening / closing member 50 is contacted and separated via the opening 61. Since it contacts the terminal plate 19 that can be connected, the negative / anode terminal plate 20 can be opened and closed by opening and closing the switch opening / closing member 50 in the main body case 1.
・ 19 has the advantage that inspection of contact failure and drive test of the motor 4 can be performed easily, and in addition, the work of correcting the defective portion can be done easily.

〔Example〕

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

In this embodiment, a battery-operated electric shaver that can be washed with water is shown. The outline is that the outer blade 2 and the rotary inner blade 3 as shown in FIG. And the blade unit 65 shown in FIG.
, Which are replaceable, drive the motor 4 by using the battery 6 housed inside the main body case 1 as a power source.
To rotate the inner blade 3 or to use the comb blade unit 65
The movable comb blade 67 is linearly reciprocated.

In FIG. 1, a main body case 1 which also serves as a grip is a plastic molded product whose whole is formed in a conical shape that spreads downward, and a motor 4 is dropped from above and housed in an upper opening inside the plastic case. Type motor housing cylinder portion 7 is integrally formed, and below the motor housing cylinder portion 7 in the main body case 1, there is a bottom open type battery case storage chamber 9 into which the battery case 8 is concentrically fitted from its open bottom. Has been formed. As shown in FIG. 7, the cross-sectional shape of the motor housing cylinder portion 7 is formed so as to match the outer shape of the motor 4 having parallel flat surfaces 4a, 4a so that the motor 4 can be housed in a fixed direction.

In FIG. 2, a battery case 8 is a plastic molded product formed in a cylindrical shape with an open bottom that can accommodate the AA type battery 6 vertically. As shown in FIG. 8, the battery case 8 has flanges 29, 29 integrally projecting outward from the lower peripheral surface. Further, as shown in FIGS. 2 and 4, one side portion (see FIG. 4) on the lower peripheral surface of the battery case 8 on which the flange 29 is projected and the other side portion (second
(See the drawing), a U-shaped notch 30 is formed in a front view, and an elastic wall piece 31 that is elastically deformable in the radial direction is formed with an upper end 31a connected to the battery case 8 as a fulcrum. Its elastic wall pieces 31
Are provided on one side (see FIG. 4) on the lower peripheral surface of the battery case 8 and two on the other side (see FIG. 2). As shown in FIG. 8, at the lower end of each elastic wall piece 31, there is an engaging claw 32 that projects a little more radially outward than the outer peripheral edge of the flange 29.
Are integrally formed between the flanges 29 and 29 so as to be flush with the flanges.

In FIGS. 1 and 2, the battery case 8 is preliminarily attached with the anode terminal plate 19 and the cathode terminal plate 20 that connect the battery 6 and the motor 4. 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-shaped plan view, and has an intermediate portion in the longitudinal direction.
19a is caulked and welded to the upper surface of the upper wall 8a of the battery case 8 with a welding pin 21. As shown in FIG. 1, the contact point 19b at one end in the longitudinal direction of the anode terminal plate 19 is introduced from the notch 22 of the upper wall 8a to the inner surface side, and the anode terminal at the upper end of the battery 6 in the battery case 8 is connected.
The contact 19c at the other end, which contacts 23, is elastically deformable in the vertical direction on the upper wall 8a as shown in FIG. 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 the cathode terminal plate 20 is projected upward from the upper wall 8a of the battery case 8, and the battery cover 36 is provided at the lower end of the cathode terminal plate 20. The conical coil spring 28, which contacts the cathode terminal 27 on the lower end side of the battery 6 under the pressing action of, is rotatably supported at its one end.

Thus, the battery case 8 is fitted into the battery case storage chamber 9 of the main body case 1 from the open bottom, and at this time, as shown in FIG. By forming a space S that gradually widens as it goes downward from the substantially lower end portion of the main body case 1 and the battery case 8, the motor 4 and the inner blade 3 are separated from each other.
Resonance caused by the vibration of is attenuated or prevented as much as possible.

Further, in the battery case 8, the outer peripheral edge of the flange 29 is brought into contact with the lower end of the inner peripheral surface of the main body case 1, so that the space S is reliably held between the inner peripheral 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 so that the engaging claw 32 is opened at the lower edge of the main body case 1.
It is inserted into the inner peripheral edge side from 34 and slides upward, and engages with an engaging hole 35 provided in the lower peripheral surface of the case 1 (see FIGS. 1 and 8). By this engagement, the battery case 8 is prevented from coming out of the main body case 1 and rattling in the main body case 1.

As shown in FIG. 1, the tip of the engaging claw 32 of the battery case 8 is provided with a taper 32a. According to this, when the battery case 8 is fitted into the main body case 1, the taper 32a hits the lower edge 34 of the opening of the main body case 1, and at this time, the battery case 8 is pushed a little strongly upward, so that the elastic wall piece 31 is radially extended. The taper 32a slides on the lower edge 34 of the opening through the inward elastic deformation and enters the inner surface side of the lower edge 34, so that the fitting can be smoothly performed.

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

As shown in FIG. 8, recesses 38 are provided at several locations on 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 recess 38 and the rib 39 constitute a positioning means for the battery case 8 so that the battery case can be stored in the main body case 1 in a fixed orientation.

Thus, when the battery case 8 is stored in the main body case 1 in the predetermined direction via the alignment means, the anode terminal plate is
The contact 19c of 19 elastically abuts 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 contact at the upper end of the cathode terminal plate 20. 20a elastically abuts on the cathode case 4a of the motor 4 which faces the opening 26 in a part of the peripheral wall of the motor housing cylinder 7.

In FIG. 1, a screw 37 is engraved on the outer periphery of the lower end of the main body case 1 having the engaging hole 35, and a battery lid 36 is screwed into this. As shown in FIG. 2, when the lower end 8b of the battery case 8 is fitted into the main body case 1, its lower edge
The length is set to project downward from 34. Thus, when the lower end 8b of the battery case 8 projects from the opening lower edge 34 of the main body case 1, it becomes easy to insert the battery 6 into the battery case 8, and the battery cover 36 is removed to place the main body case 1 on a desk or the like. The lower end of the battery case 8 sits on the table when standing upright, and the lower edge 34 of the opening of the main body case 1 can be floated from the table. Therefore, the screw 37 engraved on the outer periphery of the lower edge 34 may rub against the table. Protected without.

In the figure, the battery lid 36 is formed in a round dish shape that spreads upwards, and a rubber or plastic O-ring 48 for waterproofing 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 peripheral surface of the battery lid 36 and the lower peripheral surface of the main body case 1 form a convex curved surface having a middle bulge so that the bulging portion does not give a feeling of pressure to the palm.

1 and 4, between the anode terminal 23 of the battery 6 and the anode terminal 25 of the motor 4, a switch opening / closing member 50 for connecting and disconnecting both terminals 23, 25 is provided. The switch opening / closing member 50 includes a plunger holding base 53 and a pin plunger 52 which is slidably overlapped on the plunger holding base 53 by a predetermined stroke. Pin plunger 52 has pin 54, boss 55
And a pair of elastically deformable detent arms 56 are integrally formed. On the other hand, the plunger holding base 53 has a pin hole 57 into which the pin 54 of the pin plunger 52 is inserted, a pawl 56a at the tip of the pawl arm 56, and pawls 58 and 58 that engage and disengage, and an elastically deformable engaging pawl 59. It becomes.

As shown in FIGS. 1 and 6, the pin plunger 52 and the plunger holding base 53, which have been combined in advance, are formed between the inner peripheral surface of the upper portion of the peripheral wall of the main body case 1 and the outer peripheral surface of the upper end of the motor housing cylinder portion 7. The switch opening / closing member storage chamber 60 formed therebetween is dropped from above and mounted. At this time, as shown in FIG. 1, the pin of the pin plunger 52
54 is inserted into an opening 61 formed in the bottom portion 60a of the storage chamber 60 and protrudes into the battery case storage chamber 9, and is pressed slightly toward the fixed end side from the contact point 19c on the anode terminal plate 19 on the battery case 8. The position is set so as to press the point 19d.

Further, as shown in FIG. 1 and FIG. 7, the plunger holding base 53 is formed by engaging an engaging claw 59 integrally formed at the upper end thereof with an engaging hole 62 provided in an upper portion of the inner wall of the storage chamber 60. ， The inside of the containment room 60 is kept from becoming hard.

After the pin plunger 52 and the plunger holding base 53 are assembled, the switch knob 51 is provided with a pin 51a projecting integrally with the knob 51 and a hole 63 opened in the upper portion of the outer peripheral surface of the body case 1.
It is integrally connected with the pin plunger 52 by inserting it from above and inserting it into the boss 55 of the pin plunger 52. Therefore, in the normal state, as shown in FIGS. 1 and 4, the switch knob 51 is in the lower OFF position, and the pin plunger is
52 is a lowered position, and the tip of the pin 54 is pressed onto the anode terminal plate 19.
The contact 19c of the anode terminal plate 19 is separated from the anode terminal 25 of the motor 4 in order to press and contact the contact 19d. When the switch knob 51 is slid upward, the pressing force by the pin plunger 52 is released, so that the contact 19c of the anode terminal plate 19 becomes the anode terminal 25.
An on-state is obtained in contact with.

As shown in Fig. 1, the switch opening / closing member storage chamber
The numeral 60 is provided on the side opposite to the drainage opening 41 described later. Further, an O-ring 64 made of rubber or plastic is interposed between the pin 54 of the pin plunger 52 and the pin hole 61 at the bottom of the switch opening / closing member storage chamber 60, so that water can enter the storage chamber 60 through the hole 63 during washing. Even so, it does not enter the battery case storage chamber 9.

In FIGS. 1 and 7, a drainage port 40 is provided in a part of the inner bottom of the bristle tray 10, and this drainage port 40 is used as the main body case 1.
Is exposed to an opening 41 provided in a part of the peripheral surface at the upper end of the. on the other hand,
A ring-shaped shutter 42 is rotatably fitted in the circumferential direction on the outer peripheral surface of the upper end having the opening 41 of the main body case 1, and a drain port 43 provided in a part of the circumference of the shutter 42 is provided. The hair tray 10 is rotatable between a drain port opening position that is in communication with the drain port 40 of the hair tray 10 and a position that closes the drain port 40. As a moderation means for this rotation, as shown in FIG. 7, a moderation arm 44, which is elastically deformable in the radial direction from a part of the inner circumference of the shutter 42, is connected in a cantilever manner, and is provided at the tip of this arm 44. The engaging claws 45 can be freely engaged with and disengaged from the engaging protrusions 46 and 47 provided on the outer peripheral surface of the upper end of the motor housing cylindrical portion 7 of the main body case 1.

A finger hooking portion 42a is provided on a part of the outer peripheral surface of the shutter 42. As shown in FIG. 3, the finger hooking portion 42a is set so as to be located right above the switch knob 51 when the drain outlet is closed. Therefore, when the shutter 42 is opened and closed, the shutter 42 can be easily opened and closed by moving the finger on the switch knob 51 and the thumb usually upward without changing the holding of the main body case 1.

In FIG. 1 and FIG. 2, after the motor 4 and the switch opening / closing member 50 are assembled, the hair tray 10 is placed on the upper end of the opening of the main body case 1 and the motor housing cylinder portion 7 and screwed.
The hair bristle tray 10 presses the motor 4 together as a unit. An O-ring 48a for waterproofing is interposed between the overlapping surface of the upper end of the motor housing cylinder portion 7 and the bristle tray 10. Hair saucer 1
0 indicates an opening 13 through which the shaft 12 of the motor 4 projects at the center of the bottom.
And a screw 15 into which the outer blade holder 14 of the outer blade 2 is screwed is engraved on the outer periphery. Also, the central opening of the hair tray 10
A rubber or plastic packing 49 is provided between the motor shaft 12 and the motor shaft 13 to close the gap between the motor shaft 13 and the motor shaft 12 to prevent the infiltration of dust.

A rotor 17 is press-fitted and fixed to the shaft 12 of the motor 4 in the bristle tray 10, and an inner blade holder 18 of the rotary inner blade 3 is detachably inserted into the outer periphery of the rotor 17 and fitted in a non-rotating manner. To be done. The rotor 17 has an eccentric pin 16 protruding from the upper end thereof so that it can be used also as a drive shaft of a vibrating comb blade unit 65 as shown in FIG.

As shown in FIG. 12, the comb blade unit 65 includes movable and fixed comb blades 67 and 68 inside a hat-shaped comb blade case 70.
And a plastic oscillator 66 engaged with a movable comb blade 67
The blade tips of the movable and fixed comb blades 67 and 68 are projected from the opening of a part of the peripheral surface of the comb blade case 70. When using the comb blade unit 65, the outer blade holder 14 of the outer blade 2 is removed from the bristle tray 10 and the rotary inner blade holder 18 is pulled out from the rotor 17, and then the vibrator of the comb blade unit 65 is removed. 66 is fitted to the eccentric pin 16 on the rotor 17, and by this the rotation of the eccentric pin 16 is converted into a linear reciprocating motion by the vibrator 66, and the movable comb blade 67 is fixed and the lower surface of the comb blade 68 is linearly reciprocated. Of.

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 FIG. 11, the chamfered portion 71 is formed in a flat semicircular shape having the blade edges of the comb blades 67 and 68 in the diametrical direction, and the chamfered portion 71 is applied to the skin to form the comb blades 67 and 68. The edge of the blade makes it easy to hit 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 does not come into surface contact with the skin but comes into point-contact with the skin so as to easily slide on the skin.

In the comb blade unit 65, as shown in FIG. 13, the comb blades 67 and 68 have the switch knob 51 and the shutter 42.
It is set so as to be right above the finger hook 42a.

In Fig. 14, after washing the electric razor with water, turn it upside down and insert it into the cradle / drainer case 72 to remove water adhering to the outer surface of the razor,
The water that has been poured into the inside of the baffle is made to flow out from a large number of hair introduction holes formed in the outer blade 2. The draining case 72
The outer surface of the water drainage function that adheres to this outer surface,
An uneven strip 73 having a drainage case 72 and a non-slip function for the hand is formed in a spiral shape, and a drain hole 74 is formed in the bottom 72a.
Is open.

[Brief description of drawings]

The drawings show one embodiment of the electric shaver according to the present invention. Fig. 1 is a vertical sectional side view of the whole, Fig. 2 is a vertical sectional front view of a main body case and a battery case, and Fig. 3 is an external perspective view of the whole. 4, FIG. 4 is a front view of the switch and the battery case, FIG. 5 is a plan view of the battery case, FIG. 6 is a sectional view taken along line AA in FIG. 1, and FIG. 7 is line BB in FIG. Sectional view, FIG. 8 is a sectional view taken along line CC in FIG. 1, FIG. 9 is a sectional view taken along line DD in FIG. 1, FIG. 10 is an exploded perspective view of the whole, and FIG. 11 is a comb blade unit. Plan view, FIG. 12 is a partial vertical cross-sectional view of the comb blade unit assembled, FIG. 13 is a front view of the comb blade unit assembled, and FIG. 14 is a semi-cutaway cross-sectional view showing the draining condition. is there. 1 ... Main body case, 2 ... Outer blade, 3 ... Inner blade, 4 ... Motor, 6 ... Battery, 7 ... Motor housing cylinder part, 8 ... Battery case, 9 ... Battery case storage chamber, 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.

Claims (1)

[Claims] 1. A bottom opening in which the battery 6 can be freely inserted and taken out from the open bottom, and negative and positive terminal plates 20 and 19 for contacting the negative and positive terminals of the battery 6 are mounted on the outer surface of the cylindrical upper wall 8a. Type battery case 8, an upper open type motor housing cylinder portion 7 in which the motor 4 is housed from the open top, and an open bottom type battery case storage chamber 9 in which the battery case 8 is housed from the open bottom. A main body case 1 which is vertically partitioned and formed, a chamber 60 which is formed in the main body case 1 side by side with the motor housing tubular portion 7 to compartmentally store the switch opening / closing member 50, and a bottom 7a of the motor housing tubular portion 7 is provided with the cathode and anode ends. Child board 20
Openings 26 and 24 provided corresponding to the position of 19, and an opening 61 provided at the bottom portion 60a of the switch opening / closing member storage chamber 60 in accordance with the position of the switch opening / closing member 50, the main body case 1 and the battery case 8 and a positioning means for restricting the storage direction of the battery case 8 with respect to the battery case storage chamber 9, and the positioning means stores the battery case 8 in the battery case storage chamber 9. As a result, one terminal plate (19 or 20) of the cathode and anode contacts the terminal of the same pole side as that of the motor 4 through the opening 24 so that the terminal plate (19 or 20) can contact and separate from the other 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 plate 19 on the side that can be contacted / separated through the opening 61. An electric razor characterized by being adapted to.