JPS6218190B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a battery-powered electric shaver, particularly a rechargeable electric shaver.

[Background Art] Rechargeable electric shavers and dry cell electric shavers have a risk of running out of battery during use. In this case, if you are using a battery-powered device, you can easily deal with this by having a spare battery, but if you are using a rechargeable device, you will need to charge the device, which is often a time-consuming operation, and there is no commercial power available. There's nothing I can do if it's not nearby. The same applies if you do not have spare batteries, even if they are battery-powered. In view of these points, it has been proposed to incorporate an auxiliary battery. Under normal conditions, only the main battery is used, but if the main battery runs out, it can be switched to the auxiliary battery. Even if the main battery runs out, it can be used immediately. It is something that will never become impossible. However, since the main battery and auxiliary battery are built into a small electric shaver, the arrangement density of each component is inevitably high, making it difficult to place the switch where it can be easily operated. It becomes difficult.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to provide an auxiliary battery to cope with the main battery running out, and to make it possible to reduce the size of each component even though it is small. In particular, it is an object of the present invention to provide an electric shaver in which the switch can be easily arranged.

[Disclosure of the Invention] The present invention provides an electric shaver that is equipped with a motor and a movable blade driven by the motor via a drive element, and also has a main battery and an auxiliary battery as power sources. The length of the auxiliary battery in the direction perpendicular to the direction in which the motor and both batteries are arranged in parallel is shorter than that of the main battery, and one of the auxiliary batteries in the length direction is shorter than the main battery. It is characterized by arranging the contact part of the switch and the click member at the bottom of the switch.The length of the auxiliary battery is short, and the main battery, motor, and auxiliary battery are arranged in parallel, and the length of the auxiliary battery is short. By arranging the switch parts on one side in the length direction, the switch parts can be easily arranged while maintaining a small size, especially a thin profile. If more importance is placed on the operability of the switch, it is preferable to arrange the switch component on the drive element side located on one side in the length direction of the auxiliary battery.

The present invention will be described in detail below based on a rechargeable embodiment shown in the drawings. This electric shaver is equipped with a reciprocating movable blade 17 and has a thin thickness at the front and rear. It is said to be divided into two parts, the front and the back. A decorative panel 2 is adhered to the surface of the front housing 1, and three handles, a circular switch handle 3, an auxiliary switch handle 4, and a lock handle 5, are attached as operating parts. A trimmer block 7 is rotatably mounted in a recess on the back surface of the rear housing 6 located on the rear side, and a trimmer handle 8 for rotating the trimmer block 7 is provided on the side surface. It is arranged to be able to slide up and down. The outer cutter frame 19 has a removable lead 21 which is biased by a lock spring 22 at the upper end of the housing.
It is attached by engagement with the The movable blade 17 that comes into sliding contact with the inner surface of the outer blade 18 is arranged in the internal space of the outer blade frame 19, and is connected to a drive element 16 whose upper end projects upwardly from the upper surface of the housing. This drive element 16 converts the rotation of the motor 9 into reciprocating motion, and engages with an eccentric shaft 14 attached to the output shaft of the motor 9 together with an eccentric balancer 15, and also engages with the trimmer block 7. It has a department. 20 is a dustproof plate that prevents debris from entering the housing, 23
2 is a screw for connecting the front and rear housings 1 and 6, and 25 is a cushion for preventing vibration and noise.

Inside the housing are a main battery 10, an auxiliary battery 11, a chassis 12, and a plug 1 for the motor 9.
3. Parts such as a charging module 36 for both batteries 10 and 11 are housed. The chassis 12 is arranged along the inner surface of the front housing 1, the motor 9 is located in the center of the housing, and the main battery 10 is connected to the motor 9.
On one side of the motor 9, the auxiliary battery 11 is arranged side by side on the other side of the motor 9. A charging module 36 equipped with a step-down and rectifier element and a light-emitting element 24 for displaying charging, which faces the surface of the front housing 1, connects both batteries 10 and 11 of the motor 9.
The plug 13 is housed in the bottom of the housing so as to be slidable laterally. When charging the main battery 10 and the auxiliary battery 11, this plug 13 is made to protrude from the side and connected to a commercial power source.

Now, the main battery 10 and the auxiliary battery 11 are lined up on both sides of the motor 9.
On the other hand, the auxiliary battery 11 is shorter than the motor 9 and has a small battery capacity that can be used several times. A space is created between the upper end and the driver element 16 by arranging the drive element 16 so as to be positioned in the same position. In this space, the switch handle 3 and a pair of contact springs 32, 3 are placed.
3 and a click member that provides a click feeling when _{the switch S 1 is} operated. The above pair of contact springs 32, 33
As shown in FIG. 6, the chassis 12, which is formed of a metal conductive part forming a circuit and an insulating synthetic resin, is led out from the end surface of the chassis 12, and protrudes from the back end of the switch handle 3. Both contact springs 3 are pressed by the contact spring 32 by the driving rib 30
2 and 33 come into contact to close the circuit to the motor 9. Further, a click rib 29 is protruded from the back side of the switch handle 3 adjacent to the drive rib 30, and the switch handle can be freely moved as a seesaw by engaging a shaft 27 with a bearing 28 on the inner surface of the front housing 1. When one side of the surface of the switch handle 3 is pressed, the projection rib 31 protruding from the inner surface of the front housing 1 engages with the click rib 29, so that a click feeling is generated when the switch handle 3 is operated. FIG. 7 shows a state in which the switch S ₁ is in the off position and the tip of the lock handle 5 is located between the chassis 12 and the protrusion 34 on the back of the switch handle 3, preventing the switch handle 3 from being turned on. When the switch handle 3 is operated by pulling the lock handle 5, the driving rib 30 at the end of the switch handle 3, which swings as shown in FIG. It is brought into contact with the spring 33. At this time, the click rib 29 rides on the protrusion at the tip of the protrusion rib 31, causing a click sensation when the switch handle 3 is operated. When the opposite side of the switch handle 3 is pushed, these are restored and turned off. The reason why the positions of the contact springs 32 and 33 from the chassis 12 are shifted is as follows. That is, when the drive rib 30 of the switch handle 3 presses the contact spring 32, both the contact springs 32, 33 rotate around their respective base ends, but as shown in FIG. In other words, since the lead-out position from the chassis 12 is deviated, the contact spring 32 having the contact 35 moves downward from the initial position, and the contact spring 33 moves upward from the initial position. In other words, when both contact springs 32 and 33 come into contact, the wiping distance is approximately equal to the sum of both distances shown by α and β in the figure, and the contact life is long and foreign matter such as hair shavings is removed. Even if the foreign matter gets mixed in, the foreign matter is pushed out from the contact portion, so that it does not cause contact failure.

The auxiliary switch handle 4 has a movable contact piece 24 attached to its back surface that contacts a contact spring 42 provided on the chassis 12, and drives a changeover switch _S2 having two interlocking contact parts as shown in FIG. The battery connected to the motor 9 is switched from the main battery 10 to the auxiliary battery 11.
The auxiliary switch handle 4 has a stepped portion 41 that comes into contact with the switch handle 3 in the OFF position, as shown in FIG. Switching to the auxiliary battery is not possible unless it is in the on position. The switch _S3 shown in FIG. 2 is opened and closed in conjunction with the sliding of the plug 13, so it is turned off when the plug 13 is protruded to prevent the motor 9 from being driven during charging. It is something that exists.

[Effects of the Invention] As described above, since the present invention has an auxiliary battery, even if the main battery runs out, it can be used frequently by connecting the auxiliary battery. Since the batteries are arranged together with the main battery on both sides of the motor, it is possible to maintain a small size, especially a thin design, and the auxiliary battery is shorter than the main battery so that the auxiliary battery can be Since the contact parts and click members of the switch are placed in the space that will be created on one side of the switch, the switch must be placed in a position that makes it easy to arrange these parts while sacrificing operability. There will be no need to do otherwise.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a circuit diagram of the same, Fig. 3 is a longitudinal cross-sectional view of the same, Fig. 4 is a cross-sectional view of the same, and Fig. 5 is an exploded perspective view of the same. Figure 6 is an exploded perspective view of the same switch part, Figures 7 and 8 are sectional views of the same switch part, Figure 9 is an explanatory diagram of the operation of the contact spring as above, and Figure 10 is the same as above. It is a sectional view of the switch section, and 3 is a switch handle, 9 is a motor, 10 is a main battery, 11 is an auxiliary battery, 16 is a driver, 17 is a movable blade, and _S1 is a switch.

Claims (1)

[Scope of Claims] 1. An electric shaver equipped with a motor and a movable blade driven by the motor via a drive element, and also equipped with a main battery and an auxiliary battery as power sources, which are arranged on both sides of the motor. Both of these batteries installed are
The length of the auxiliary battery in the direction orthogonal to the direction in which the motor and both batteries are arranged in parallel is shorter than that of the main battery, and one of the lengths of the auxiliary battery is provided with a switch contact part and a switch for the click. An electric shaver characterized in that parts are arranged. 2. The electric shaver according to claim 1, wherein the contact portion of the switch and the click member are arranged between an auxiliary battery and a driver located above the auxiliary battery.