JPS6148393B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric shaver.

A counter device for an electric shaver notifies you in advance of the end of battery life or the time to replace the battery, so that you can always shave properly. but,
This counter device has the problem that it is necessary to return to zero each time the battery is replaced, which increases the number of operations required and makes it difficult to use.

Therefore, an object of the present invention is to provide an electric shaver that can automatically return to zero without increasing operations.

In this invention, the return to zero of the counter device is linked to the battery replacement operation, and since the counter device returns to zero at the same time as the battery is replaced, there is no need for any operation, making the electric shaver more convenient to use.

An embodiment of the invention is shown in FIGS. 1 to 7. That is, in this electric shaver, a head block 3 is attached to the head part 2 of the razor body 1, a counter block 5 is attached to the front recess 4 of the razor body 1, and a battery holder 6 with a switch spring is installed in the copper part of the razor body 1. A battery cover 8 is detachably attached to the bottom opening 7 of the body.

In the head block 3, a motor 10 is attached to a blade mount 9 from below, a blade block 11 is attached to the upper side of the blade mount 9, and an inner blade body (not shown) of the blade block 11 and a joint 12 of the motor 10 are connected. Join. The switch handle 13 is rotatably fitted around the outer periphery of the blade mount 9, and the body of the blade mount 9 is fitted and supported in the opening 2a of the head portion 2 of the razor body 1. At the switch handle 13, 14
15 is a lock button, 15 is a click projection, 16 is a rotation range regulating projection, and 17 is a switch projection.

The battery holder 6 has two battery receiving recesses 1 on the top surface.
8, an anode 20 and a cathode 21 are provided on the front wall 19 of the holder 6, and motor pressure contact springs 23, 24 and one motor pressure contact spring 24 are provided on the front end 22 of the holder 6.
A switch spring 25 is provided with the directional contact being .
A press spring 23 is connected to the anode 20 and a switch spring 25 is connected to the cathode 21. When this battery holder 6 is set in a predetermined position within the barrel of the razor main body 1, the tips of the motor pressure contact springs 23 and 24 come into contact with motor terminals (not shown) located on the bottom surface of the motor 10 and protruding from the bottom surface. Further, the switch spring 25 is located at the lower end of the switch protrusion 17 of the switch handle 13, and when the switch handle 13 is rotated, the switch protrusion 17 pushes the switch spring 25 and contacts one pressure contact spring 24, thereby operating the switch. That's what I do.

The battery cover 8 has tabs 26 on both sides,
A hook 27 is provided at the tip of the knob 26, and an energizing spring 28 and a locking plate 29 for zero return are installed inside.
has been established. A locking recess 28 is formed inside the opening 7 at the bottom of the body of the razor body 1 to correspond to the hook 27, and the hook 27 is locked in the locking recess 28 by the resin elasticity of the knob 26 to be in a closed state. . Therefore, when a dry battery (not shown) is inserted into the recess 18 and the battery cover 8 is closed, the battery is pushed by the energizing spring 28 and held between the anode 20 and the cathode 21. In this case, the two batteries are arranged in opposite directions to form a series connection.

The counter block 5 has a counter component assembled into a flat base 30, which is housed in the front recess 4 of the razor body 1, and hooks 31 formed on both sides of the base 30 are engaged with locking holes 32 formed in the recess 4. It can be installed by stopping. A recess 32 is provided at the center of the front edge of the surface of the base 30, and the rotation range regulating protrusion 16 of the switch handle 13 is located within the recess 32 when the switch handle 13 is attached to the razor body 1. On the back side of the base 30, as shown in FIG.
A semicircular arc-shaped display slit 36 (throughout the surface side) is formed between the display slits 35 and 35 . A display plate 37 is rotatably supported on the shaft 33, and the shafts 34 and 35 have a retaining split 38 formed at their tips, and a feed wheel 39 is provided on the shaft 34, and a feed lever 40 is provided on the shaft 35, respectively. Pivotally supported. The display plate 37 is disc-shaped, and a partially toothed gear 41 is formed in a part of the outer peripheral surface, that is, in a range where the display plate 37 can rotate up to a predetermined maximum value on the scale. It has a color display section 42 (FIG. 1) that displays the remaining capacity, and a cam section 43 is formed at the center on the opposite side of the color display section 42.
The cam surface 44 on the outer periphery of this cam portion 43 is connected to the display plate 37.
The diameter is made to gradually become shorter in the direction opposite to the return rotation direction (forward rotation). Further, a stopper protrusion 45 is formed at a position a predetermined distance away from the center on the cam portion side of the display plate 37, and the color display portion 42 of the display plate 37
Rotation regulating arcuate grooves 46 are formed at symmetrical positions (fifth
(Fig.), when the base 30 is supported on the shaft 33, the protrusion 47 formed on the base 30 engages with the arcuate groove 46. A feed wheel 39 supported by a shaft 34 has a gear 48 and a ratchet 4 that mesh with a partially toothed gear 41 of the display plate 37.
9, and when the feed wheel 39 rotates, the display plate 37
rotates. The feed lever 40 includes a lever portion 51 extending in the radial direction from the bearing portion 50, an L-shaped spring portion 52 integrally formed at the tip of the lever portion 51, and extending from the bearing portion 50 at a substantially right angle to the lever portion 51. It consists of an L-shaped elastic claw 53, and when supported on the shaft 38, the tip of the spring portion 52 touches the base 30 as shown in FIG.
Under the spring action, the vicinity of the tip of the lever portion 51 is supported by the positioning protrusion 55 formed on the base 30, and at this time, the tip of the elastic pawl 53 engages with the spring receiving protrusion 54 formed on the feed wheel 39. The ratchet wheel 49 faces the ratchet wheel 49. In addition, when the base 30 is attached to the recess 4, the tip of the lever portion 51 is positioned so as to intersect the switch protrusion 17 in the ON operation direction, as shown in FIG. When operated, the lever part 51 is pushed by the switch protrusion 17 and rotates toward the imaginary line in FIG. Mountain-minute feed, motto display board 3
7 by a predetermined angle.

The return member 56 is a substantially rectangular flat plate as shown in FIG.
A detection rod 57 extends from the rear end, and a support plate 58 and a notch 59 formed on the base 30 make the detection rod 57
A coil spring 61 is compressed between a flange 60 attached to the detection rod 57 and the support plate 58 to urge the detection rod 57 backward, and the battery cover 8 is returned to zero. It is in contact with a locking plate 29. Therefore, when the battery cover 8 is removed to replace the battery, the coil spring 61 causes the detection rod 57 to
moves backward by a predetermined amount. Furthermore, the positioning protrusion 62 protruding from the side surface of the return member 56 is engaged with the positioning rib 63 of the base 30 when the battery cover 8 is attached, resulting in a stable state. In its stable state, the return member 56 has a claw 64 which serves as a resilient locking means by forming a folded portion 63 at the front end.
is elastically locked to the ratchet wheel 49 by its elastic action,
The claw 64 holds the feed wheel 39 and prevents it from reversing. Further, the return arm 65 protruding from the front end shoulder of the return member 56 is connected to the cam surface 4 of the cam portion 43.
4 (FIG. 6), and with the battery cover 8 removed, the return arm 65 comes into pressure contact with the cam surface 44 and the cam surface 4
4, the return arm 65 finally locks on the cam surface 44 and the return member 5 is rotated by the spring 61.
The maximum protrusion amount of 6 is determined. Further, as will become clear in the operation described later, a projection 66 for initial return drive and display plate rotation stopper is formed on the side surface of the return member 56, and the projection 4
I am trying to face 5.

The operation of this counter device is such that when the switch handle 13 is rotated from OFF to ON, the switch protrusion 17 moves from the solid line to the imaginary line as shown in FIG.
1 is pushed by the switch protrusion 17, bends the spring part 52 and rotates as shown in the imaginary line, and accordingly the claw 53
rotates and engages with the groove of the ratchet wheel 49, rotating the ratchet wheel 49 by one thread. This rotation of the ratchet 49 causes the gear 4
8 and 41 rotate, and the display board 37 rotates. As a result, the color display portion 42 appears at one end of the display slit 36 of the display on the base 30, and moves on the display slit 36 by one scale corresponding to one use. When the switch handle 13 is turned off, the lever portion 51 is released from being pressed by the switch protrusion 17, so that the lever portion 51 returns to its original position due to the action of the spring portion 52, and at the same time the pawl 53 separates from the ratchet wheel 49.
At this time, the pawl 64 of the return member 56 is elastically engaged with the ratchet wheel 49, so there is no reverse rotation and no excessive rotation. Similarly, when the switch handle 13 is turned on again from OFF, the display plate 37 further rotates by a predetermined angle, and thus the display plate 37 continues to rotate according to the number of times the electric shaver is used. The number of uses is indicated by the number of arc-shaped graduations from one end. Therefore, each time the user uses the electric shaver, he or she can know how many times the shaver has been used since the battery was replaced or how much remaining capacity the battery has left. Furthermore, the number of teeth of the gear 41 is generally set according to the battery capacity.
7 has finished rotating, if the switch handle 13 is turned on or off any further, the feed wheel 39 will only rotate, and the display board 37 will not rotate. Furthermore, further rotation of the display board 37 is caused by the stopper protrusion 45 of the display board 37 and the protrusion 66 of the return member 56 being engaged, and furthermore, the base 3 is engaged with the circular arc groove 46 of the display board 37.
This is regulated by the engagement of the projection 47 of 0. Therefore, when returning the display board 37, the battery cover 8 is removed and the battery is replaced. battery cover 8
When removed, the return member 56 moves due to the action of the spring 61 (FIGS. 5 to 7), and this movement causes the pawl 64 of the return member 56 to separate from the ratchet wheel 49 of the feed wheel 39, and the feed wheel 39 becomes free. At the same time, the protrusion 66 hits the stopper protrusion 45, and the protrusion 66 pushes the stopper protrusion 45, thereby rotating the display plate 37 in the reverse direction as indicated by the arrow M in the initial stage of return. Further, as the return member 56 continues to move, the side surface of the return arm 65 is aligned with the cam surface 44 of the cam portion 43.
, and by pushing the cam surface 44 with the return arm 65, the display plate 37 continues to rotate in reverse and returns to its original position.
Return to zero. During this time, the gear 41 of the display board 37 meshes with the gear 49 of the feed wheel 39. On the other hand, when the battery is replaced and the battery cover 8 is attached to the razor body 1, the detection rod 57 is pushed up by the locking plate 29, and the pawl 64 elastically engages with the ratchet wheel 49 to hold the ratchet wheel 49. Then it enters a count waiting state.

As described above, in the electric shaver of the present invention, since the zero return means is linked to the battery replacement operation, there is no need for a return operation, and there is no need to forget to return the shaver, resulting in improved usability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is an enlarged side view thereof, Fig. 3 is an exploded perspective view, Fig. 4 is an exploded perspective view of the counter block, and Fig. 5 is a count operation state. A broken plan view of the substrate, FIGS. 6 and 7 are broken plan views of the substrate showing the zero return operation process. 1...Razor body, 5...Counter block, 8
...Battery cover (battery support member), 37...Display board,
39...Feeding wheel, 40...Feeding lever, 56...Returning member, 64...Claw (locking means).

Claims (1)

[Scope of Claims] 1. A razor body, a battery detachably attached to the razor body, and a battery disposed in the razor body that displays the number of uses or the remaining capacity of the battery and is linked to the attachment/detachment operation of the battery. An electric shaver equipped with a counter device that returns to zero. 2. The Ukanta device includes a display board, a feed wheel that engages with the display board, a feed lever that rotates the feed wheel, a return means with a locking means that restricts the reverse rotation of the feed wheel, and the return means. The electric shaver according to claim 1, further comprising a spring that presses the battery or the battery support member.