JPH0442035B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric shaver in which a head case having inner and outer cutters can be swung back and forth.

[Conventional technology]

Conventionally, electric shavers have been able to have a head case with inner and outer blades placed in an upright position, almost in a straight line with the main case, so that they can be stored compactly when not in use, and when in use, the outer blades can be placed against the skin. There is a head case with a swinging head that allows the head case to be tilted for easy application and ease of use.

[Problem that the invention seeks to solve]

However, in this type of conventional electric shaver with a swinging head, the head case, which has inner and outer blades, is generally operated by directly holding the head case in the hand. The operation is cumbersome as you have to hold each one in your hand.

The present invention has focused on this fact, and aims to make it possible to easily swing the head with one touch operation without changing the grip at all while holding the main body case firmly and securely during use.

[Means for solving problems]

In order to achieve the above object, in this invention, an operation button that can be operated by swinging is mounted on the main body case 1, and the operation button takes the form of a push operation that appears and retracts from the main body case 1, and the head case 1 The position is set on the front surface of the main body case in the same direction as the tilting direction of the main body case.

〔Example〕

The drawing shows an embodiment of an electric shaver according to the present invention.

(Body case structure) In Figs. 1 to 6, the main body case 1 is formed into a rectangular cylindrical shape by abutting front and rear plastic cases 1a and 1b and integrally connecting them with screws 2, etc. A mounting base 3 is fixed to the upper part, and the head case 4 is placed on the upper part of the mounting base 3 in an upright position in which it is substantially in a straight line with respect to the main body case 1, and in a forward tilted position in which it is tilted toward the front side of the main body case 1. It is pivotally connected around a shaft 5 so as to be freely swingable.

Specifically, as shown in FIG. 4, shafts 5, 5 protruding from the left and right ends of the mounting base 3 are rotatably inserted into shaft holes 6, 6 recessed in the left and right inner surfaces of the head case 4. Holes 8 are fitted and provided at the front and rear of the elastic moderation plates 7, 7, which are installed upright at the left and right ends of the mounting base 3.
9 is selectively engaged with the engagers 10, 10 provided on the left and right inner surfaces of the head case 4, the head case 4 can be placed in an upright position (see Fig. 1) and a forward tilted position ( (see Figure 2).

(Inner blade drive mechanism) In FIGS. 4 and 5, a plastic vibrating body 11 that elastically swings and deforms in the left-right direction is attached to the inside of the head case 4, and a vibrator 1
1 has a pin 12 erected in a forward-slanted manner at the center of the upper end surface and protrudes upward from the central opening 13 of the head case 4;
An inner cutter 14 is attached to this pin 12 via an inner cutter holder 15. On the other hand, inside the main body case 1, a motor 18 is interposed and fixed between the mount 3 and the motor lower end receiver 94, and the motor shaft 18a protrudes upward from the opening 19 of the mount 3 and has an eccentric pin 20 at this protruding end. An eccentric cam 21 is fixed, and the eccentric pin 20 is engaged with a longitudinally long long groove 24 provided on the lower surface of the slider 23, which is slidably engaged with a groove 22 provided longitudinally on the lower surface of the vibrating body 11. match. In such a case, the eccentric cam 21 is rotated by the drive of the motor 18, and the slider 23 that engages with the eccentric pin 20 of this cam 21 vibrates back and forth to the left and right, vibrating the vibrating body 11 in the same direction. The inner cutter 14 vibrates back and forth from side to side due to the vibration.

Between the overlapping surface of the inner upper surface of the head case 4 and the vibrating body 11, there is a rubber-made rubber member that closes the gap between the central opening 13 of the head case 4 and the pin 12 that penetrates thereto to prevent hair from entering. This hair stopper plate 25 and this hair stopper plate 2
A fixing plate 26 made of a relatively heavy material such as mild steel or brass is interposed and fixed to press and fix the head part 5 to the head case 4. In such a case, the weight of the head case 4 is increased by the fixing plate 26 which exerts a weight function, so vibrations are suppressed even during use, and propagation to the main body case 1 can be reduced as much as possible.

(Means for mounting the outer cutter) In FIGS. 4 and 5, a mesh-shaped outer cutter 16 is removably fitted to the head case 4 via an outer cutter holder 17, and is attached to the inner surface of the outer cutter 16. Inner blade 1
4 makes sliding contact. The outer cutter holder 17 has means for maintaining the attached state to the head case 4. As a specific example of the mounting and holding means, a moderation plate 7 and an engaging member 10 used for regulating the swinging position of the head case 4 are used. That is, the engagement button 28 is fitted into the openings 27 formed in the left and right side walls of the head case 4 so as to be movable in and out of the case and in a manner that prevents it from coming out in the outward direction of the case. The engaging element 10 is fixed in a protruding manner, and the outer end surface 28a of the engaging button 28 is formed to have a mountain-shaped cross section. Thus, the engagement button 28 is always urged to protrude due to the elasticity of the moderation plate 7, and the retaining recesses 29 formed on the inner surfaces of the left and right side walls of the outer cutter holder 17 lock the outer cutter into the outer surface 28a of the engagement button 28. It can be engaged freely as the holder 17 is attached and detached.

(Interior parts to the main body case) In FIG. 6, inside the main body case 1, in addition to the motor 18, there is a first battery 30 used in normal operation that supplies power to the motor 18, and a capacity of the first battery 30. Spare second battery 3 for use when the battery is low
1 and a press circuit board 32 are built in. The first battery 30 and the second battery 31 may be either storage batteries or dry batteries, and it does not matter whether they are rechargeable or not. On the pressed circuit board 32,
An inner blade drive switch 33 that opens and closes the energization circuit to the motor 18, a changeover switch 34 that can switch the energization circuit to the motor 18 from the first battery 30 in a steady state to the second battery 31 side, the transformer 35, and the charging A contact plate 37 and the like that open and close the charging circuit when the plug 36 is inserted or removed is assembled. FIG. 17 shows the electrical circuit.

(Off swing operation mechanism and inner blade drive switch on/off mechanism) In FIG.
A push-type first operation button 38 and a second operation button 39 are arranged side by side on the left and right, and the inner blade drive switch 33 is activated by the push operation of the first operation button 38.
At the same time that the head case 4 is turned on, the head case 4 changes to a forward tilted position, and the inner blade drive switch 33 is turned off by pushing the second operation button 39.
The head case 4 returns to the upright position.

Specifically, in FIGS. 1 to 4 and FIGS. 7 to 9, the first operation button 38
A seesaw plate 40 is arranged inside the main body case 1 corresponding to the second operation button 39. Seesaw board 4
A support plate 42 is bent into a dogleg shape, and a fulcrum part 40a, which is a bent part at the center thereof, hangs downward from the mounting base 3 and is supported on a protruding support base 41 of the main body case 1. The first operation button 38 is placed on one end 40b above the fulcrum portion 40a, and the first operation button 38 is placed on the other end 40.
A second operation button 39 is mounted on each c,
By alternately pushing the first operation button 38 and the second operation button 39, one end 40b and the other end 40c alternately move back and forth (seesaw movement). One end 40b is attached with the first operation button 38.
A switch operation piece 43 is formed at the tip of the blade to extend to the position of the inner blade drive switch 33, and a swing operation piece 44 is formed at the tip of the other end 40c to which the second operation button 39 is attached. , the operating piece 44 is linked to the head case 4 via a swing plate 45.
The swing plate 45 is formed in a generally triangular shape, and a shaft 47 is mounted on a bearing 95 near the right side wall 46 of the main body case 1.
A pin 49 is protruded from the lower end of the shaft 47 of the front beveled edge 48, and this pin 49 is attached to the swing operation piece 44 with a long vertically extending length. A pin 51 is engaged with the hole 50 and also protrudes from the end above the shaft 47 of the same front end bevel 48, and this pin 51 extends the length of the lever 52 extending downward from the right end of the head case 4. Hole 53
is engaged with.

In such a case, move the seesaw plate 4 as shown in Figure 9.
0 is pushed with the first operation button 38, its one end 40b moves backward, and the other end 40b moves backward.
When c moves forward, the switch operation piece 43 contacts the inner blade drive switch 33 and turns it on, and at the same time, the swing plate 45 moves the shaft 47 through the engagement of the elongated hole 50 and the pin 49. The head case 4 is pivoted around the shaft 5 into a forward tilted position by swinging in the direction of the arrow A in FIG. 1 (see FIG. 2). At this time, the engaging element 10 of the head case 4 falls into one hole 8 of the moderation plate 7 shown in FIG. 6 and engages with the head case 4, so that the head case 4 is regulated in the forward tilted position shown in FIG. At the same time, the tilted posture of the seesaw plate 40 is maintained via the swing plate 45 that links the seesaw plate 40 and the head case 4.

As shown in FIGS. 1 and 8, the seesaw plate 4
0 is pushed in the opposite direction by the push operation of the second operation button 39, the switch operation piece 43 turns off the inner blade drive switch 33,
At the same time, the swinging plate 45 swings around the shaft 47 in the opposite direction to rotate the head case 4 back to the upright position around the shaft 5 (see FIG. 1). At this time, the engaging element 10 moves into the hole 8 through the inward elastic deformation of the moderation plate 7 as the head case 4 rotates.
It comes off from the moderation plate 7, slides on the outer surface of the moderation plate 7, and connects to the other hole 9.
The upright position of the head case 4 and the tilted position of the seesaw plate 40 are maintained.

In the illustrated example, the oscillating plate 45 is also provided with moderation means for regulating the position of its oscillating angle. That is, as shown in FIGS. 8 and 9, an elastic moderation plate 55 having an engager 54 is provided on the main body case 1 side, and one of the protrusions 56 having a mountain-shaped cross section provided on the swing plate 45 One of the slope 56a and the other slope 56b can be freely engaged with and disengaged from the engaging element 54 according to the swing of the swing plate 45, and the swing plate 45 is in a first swing angle position in which the head case 4 is in a forward tilted position. and a second swing angle position in which the head case 4 is in an upright position.

In FIGS. 1 and 8, the first operation button 38 and the second operation button 39 are each formed by overlapping inner and outer disks 57a and 57b with a dish-shaped cross section, and are provided protruding from the center of the inner disk 57a. Button mounting hole 5 with clawed leg 58 in seesaw plate 40
9 in a locking manner, and the upper end arcuate surface 60a of the claw 60 of the claw leg 58 and the outer disc 5
It is attached to the seesaw plate 40 by sandwiching the periphery of the button mounting hole 59 of the seesaw plate 40 between a semicircular protrusion 61 protruding from the inner surface of the seesaw plate 7b (see FIG. 15). As a result, while the first operation button 38 or the second operation button 39 moves in and out of the case in a straight line in and out of the case under the guidance of the button hole 62 on the main case 1, the seesaw plate 40 moves back and forth (seesaw plate 40). Even when the seesaw board 40 tilts due to movement, the buttons 38 and 39 can smoothly escape from the tilt of the seesaw board 40 without rattling in the front-back direction.

As shown in FIG. 9, a part of the periphery of the outer circular plate 57b of each button 38, 39 is pressed against the button receiver 64 provided at the innermost end of the button hole 62 of the main body case 1, so that each button can be depressed. The amount consumed is regulated.

(Lock Means) A lock means is provided to prevent the head case 4 from swinging inadvertently or the inner blade drive switch 33 from being turned on when the first operation button 38 is pressed during carrying, storage, or storage. 1 and 7, the lock means includes a lock button 65 on the outer surface of the right side wall 46 of the main body case 1, which can be slid vertically.
5 has a lock pin 66 on this inner surface, and in normal conditions, the lock pin 66 is located at a position below the shaft 47 on the front end bevel 48 of the swing plate 45, and when the first operation button 38 is pressed. Make sure that the oscillating head 45 does not oscillate even if the lock button 6
5 is slid downward, the lock pin 66 comes off the front end oblique edge 48 of the oscillating plate 45, and when the first operation button 38 is pushed, the oscillating plate 45 swings as described above via the seesaw plate 40. can.

(Battery switching means) On the front outer surface of the main body case 1, the first
7, and FIGS. 10 to 12, a push-type third operation button 67 is provided below the first and second operation buttons 38, 39. Main body case 1 corresponding to the third operation button 67
A switching plate 68 is arranged inside. Switching plate 6
8 is disposed on the fixed terminal of the changeover switch 34 when sliding in the vertical direction, has an inclined surface 69 on a part of its front side, and has a movable terminal 70 on its rear side. The third operation button 67 has a leg portion 72 having a slope 71. When the third operation button 67 is pushed and the slope 71 slides on the slope 69 and the switching plate 68 slides downward, the movable terminal 70 is opened. By contacting the fixed terminal of the changeover switch 34, the first battery 30 in a steady state is switched to the second battery 31 side. However, this switching operation is not possible when the head case 4 is in the upright position, and becomes possible only when the head case 4 is in the forward tilted position. Further, when the head case 4 is returned from the forward tilted position to the upright position, the state is switched to the first battery 30 side in a steady state in conjunction with this.

Specifically, a switching lever 73 is disposed between the switching plate 68 and the swinging plate 45, and the switching lever 73 has a recess 7 at the upper end of the lever body.
4, and an engaging element 75 protruding from the lower edge of the oscillating plate 45 is engaged in this recess 74, and an engaging stepped part 76 is provided on one side of the lower end of the lever body to engage this engaging element 75. An engaging step portion 77 provided on one side of the upper end of the switching plate 68 is engaged with the joining step portion 76 . Therefore, when the head case 4 is in the upright position, the engagement step 76 of the switching lever 73
and the engagement step portion 77 of the switching plate 68 are engaged with each other, and therefore, at this time, the third operation button 67
Even if the switch is pushed, the switching plate 68 cannot be slid downward, making it impossible to switch to the second battery 31 side. However, the first operation button 3
8 is pushed and the inner blade drive switch 33 is turned on via the seesaw plate 40, at the same time the swinging plate 45 swings and the head case 4 assumes a forward tilted position.
At the same time, the switching lever 73 slides downward via the engaging member 75 due to the swinging of the swing plate 45, and the engaging step 76 of the switching plate 68 is moved downward.
Separate downward from 7. Only at this time can the switching plate 68 be slid downward. Therefore, when the third operating button 67 is pushed at this time, the switching plate 68 slides downward through the contact action of the slopes 69 and 71, thereby switching the switching switch 34 to the second battery 31 side. When the second operation button 39 is pushed from the switching state to the second battery 31 side, the switching lever 73 slides the switching plate 68 upward via the seesaw plate 40, and the switching plate 68 is returned to its original position. At the same time, the third operation button 67 is moved to the slope 69, 71.
protrudes through the abutting action of.

(Sliding blade extension/retraction operation mechanism) In FIGS. 13 and 15, a cutting edge unit 80 moves in and out around a shaft 81 in an opening 79 opened at the upper end of the rear case 1b of the main body case 1. Can be installed freely. Kiwazori blade unit 80
In the protruding state, the engagement piece 82 protruding from the rear of the sharp edge unit 80 engages the slider 23.
The movable blade 80a of the sharpening blade unit 80 slides left and right with respect to the fixed blade 80b by engaging with the groove 83 formed in the groove 83 and moving the slider 23 left and right. When the edge cutting blade unit 80 is in the retracted state, the engaging piece 8
2 comes off from the groove 83 of the slider 23.

This sharp blade unit 80 has a main body case 1.
It is also possible to move in and out by sliding a sharp ingress/egress operation button 85 mounted on the outer surface of the left side wall 84. Specifically, inside the main body case 1, the edge blade unit 80 and the edge egress/egress operation button 85 are connected.
A swing plate 86 and a diversion lever 87 are arranged between the two. The rocking plate 86 is swingable around a shaft 88, and the pin 90 of the egress/retraction operation button 85 is inserted into a recess 89 at the front end of the shaft 88, and the lever 87 is inserted into a pin 94 at the rear end of the swing plate 86. recess 91 at the lower end of
are respectively engaged, and the hook portion 92 at the upper end of the edge lever 87 is engaged with the left shoulder portion 93 of the edge edge unit 80. Then, press the edge button 8
When the lever 5 is slid upward, the swing plate 86 swings and slides the offset lever 87 downward. This downward slide causes the hook portion 92 to pull down the shoulder portion 93 of the edge cutting blade unit 80, and the edge cutting blade unit 80 projects and rotates around the shaft 81. When the edge button 85 is slid downward in the opposite direction, the edge lever 8 is moved through the swing plate 86.
7 slides upward and the hook part 92 touches the shoulder part 93.
is pushed up, and the blade unit 80 rotates in and out around the shaft 81.

[Another example]

In the above embodiment, the head case 4 can be freely switched between the forward tilted position and the upright position by pushing the two first and second operation buttons 38 and 39, but the present invention is not limited to this. The head case 4 can also be freely switched between a forward tilted position and an upright position by pushing one of the operating buttons 38 or 39. In this case, for example, when the first operation button 38 is pressed inward of the main body case 1, the head case 4 tilts forward, but it does not return to its original position even after releasing the button, and when pressed again, it returns to its original position. The head case 4 may be returned to the upright position by returning to the position shown in FIG.

〔Effect of the invention〕

As explained above, according to the present invention, since the operation button is mounted on the main body case 1 and the head case 4 can be swung by operating the operation button, the swiveling operation is easy. The button is
This is a push-button operation mode that allows the user to move in and out of the main body case 1, and is positioned on the front outer surface of the main body case 1 in the same direction as the tilting direction of the head case 4, so that the hand that grips the main body case 1 when in use is The head case 4 can be moved from swinging to ready for use without having to change its grip, and after use, the head case 4 can be returned to an upright position without having to change its grip, making it extremely convenient to use. In good condition. In particular, when pressing the operation button, the main body case 1 must be gripped firmly with the fingers, so the device can be used in a securely gripped state, which is extremely convenient for use.

[Brief explanation of drawings]

The drawings show an embodiment of the electric shaver according to the present invention, and FIG. 1 is a cross-sectional view of the main part with the head case in an upright position, and FIG. 2 is a cross-sectional view of the main part with the head case in a forward tilted position. 3 is a perspective view of the overall appearance, 4 is a longitudinal front view, 5 is a longitudinal side view, 6 is an exploded perspective view of the entire structure, and 7 is a swinging operation. An exploded perspective view of the system. Figure 8 is a sectional view showing the first operation button and seesaw plate with the second operation button pressed. Figure 9 is a cross-sectional view of the first operation button and seesaw plate with the first operation button pressed. 10 is a front view showing the arrangement of the third operating button, switching plate, and switching lever of the battery switching operation system; FIG. 11 is the state before pushing the third operating button. 12 is a sectional view showing the third operation button pressed, FIG. 13 is an exploded perspective view of the egress/retraction operation system of the edge cutting blade unit, and FIG. 14 is the edge cutting blade unit. Cross-sectional view of this entry/exit operation button, 1st
Figure 5 is an operational diagram of the opening and closing operation of the edge cutting blade unit.
FIG. 16 is a partial sectional view of the first and second operation buttons, and FIG. 17 is an electric circuit diagram. 1...Main case, 1a...Front case, 1b...
...Rear case, 4...Head case, 5...Shaft, 14
...Inner blade, 16...Outer blade, 38...First operation button, 39...Second operation button, 40...Seesaw board.

Claims (1)

[Claims] 1. Consisting of a main body case 1 and a head case 4 having inner and outer cutters 14 and 16, the main body case 1 and the head case 4 are arranged so that the head case 4 is substantially in a straight line with respect to the main body case 1. The case is pivotably connected to be rotatable around an axis 5 between an upright position and a forward leaning position where the main case 1 is tilted toward the front side, and a push-type operation button is provided on the front outer surface of the main case 1. An electric shaver that is mounted so as to be retractable in and out of the case, and that the head case 4 is tilted forward in conjunction with the push operation of the operation button inward of the case. 2. The electric shaver according to claim 1, wherein the operation button also has the function of turning on a drive switch for the inner cutter 14.