JPH0320274B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric hair clipper and aims to reduce power consumption.

Conventionally, electric hair clippers can be used for round cutting as well as
It is made so that plowing can be carried out. However, even though the number of hairs cut in plow cutting is extremely small compared to round cutting, the motor is driven with the same power (rotation speed) as in round cutting, which wastes electricity accordingly. Ta.

The present invention has focused on this fact, and aims to provide an electric hair clipper that can reduce power consumption by reducing the power of the motor when mowing other than round mowing, and can reduce camera shake and cut accurately. It is something.

The details will be explained below based on the drawings.

1 to 5 illustrate an electric hair clipper according to the present invention, in which a hair clipper type reaping device 2, a vibrator 3 for driving the same, a motor 4, and a battery 5 are installed in the main body case 1 in order from the front. be equipped.

The vibrator 3 is entirely made of integrally molded plastic, and includes a thick rear frame 3b that is guided and mounted on the bottom wall 1b of the main body case 1 so as to be movable in the front and rear directions;
A front frame 3a having a forwardly protruding interlocking arm 6 is integrally connected by thin left and right frames 3c and 3d to form a substantially parallel rectangular frame shape as a whole, and a vertical direction formed on the rear surface of the front frame 3a By rotating the crank pin 8, which is engaged with the long groove 7, by the motor 4, the front frame 3a is reciprocated to the left and right through the elastic deformation of the left and right frames 3c and 3d. Further, the vibrator 3 has an operation knob 9 integrally formed on the rear frame 3b so that the operation knob 9 can be attached to the upper wall 1a of the main body case 1.
The vibrator 3 is arranged so as to face an operation opening 10 which is opened, and by pinching it, the entire vibrator 3 can be slid in stages to a round cutting position and a plowing position in the front and back direction orthogonal to the vibration direction. In this case, even when the operation knob 9 is moved to the circular cutting position and the vibrator 3 is moved to the most forward position, the crank pin 8 remains in the groove 7.
The length of the crank pin 8 is set to be large so that the state of interlocking engagement with the groove 7 is maintained without coming off.

The reaping device 2 has a fixed blade 13 fixed to a fixed blade support 12 which is removably pivoted to the main body case 1 via a support shaft 11, and a movable blade support 14.
The movable blade 15 fixed to the fixed blade support 12 is pressed against the upper surface of the fixed blade 13 by a helical spring 17 attached to the fixed blade support 12 via a spindle 16 so as to be able to freely slide into contact with the upper surface of the fixed blade 13. An interlocking arm 6 at the tip of the vibrator 3 is engaged with a protrusion 18 protruding from the upper surface of the movable blade 15 so that the movable blade 15 vibrates in the left-right direction via the vibrator 3 due to the rotation of the motor 4.

As shown in FIG. 4, the fixed blade 13 has a shallow groove cutting edge 13a and a deep groove cutting edge 13b arranged in alternating rows, and after sliding the operating knob 9 to the circular cutting position, the cutting edge of the movable blade 15 is fixed. Circular cutting is performed by moving the blade 13 in the left-right direction between the tip A of the cutting edge and the depth B of the shallow groove, and after moving the operation knob 9 to the plowing position, the cutting edge of the movable blade 15 is moved to the fixed blade 1.
Plow mowing can be performed by sliding the blade in the left-right direction within the range of the blade depth B of the shallow groove and the blade depth C of the deep groove No. 3.

There is a switch operation knob 1 on the side of the main case 1.
9 is attached, and in conjunction with the sliding operation of the knob 19, a power switch 21 interposed in the energizing circuit of the motor 4 can be turned on and off.

As shown in FIG. 5, the power changeover switch 20 built into the main body case 1 is a one-circuit, two-contact switch, and changes its switching position in conjunction with the aforementioned operation knob 9. That is, the movable electrode 22 of the power changeover switch 20 and the power switch 21 are connected, the first contact 23 of the power changeover switch 20 is directly connected to the motor 4, and the second
The contact 24 is connected to the motor 4 via a diode 25.

In such a case, when the operation knob 9 is stopped at the circular cutting position, the power changeover switch 20 will close to the first contact 23.
When the power switch 21 is closed, the motor 4 is directly connected to the battery 5, and the output voltage of the battery 5 is directly applied, and the motor 4 rotates at the normal rotation speed and high power to drive the movable blade 15. Drive to enable circular cutting. When the operating knob 9 is switched to the plowing position, the power selector switch 20 is automatically switched to the second contact 24 side, and the power switch 2 is switched to the second contact 24 side.
1, the battery 5 is connected to the motor 4 via the diode 25. Therefore, a voltage lower than the output voltage of the battery 5 by the voltage drop caused by the diode 25 is applied to the motor 4, and the motor 4 rotates at a rotation speed lower than the normal rotation speed to drive the movable blade 15. This means that the power consumption will be lower than in the case of round cutting.

FIGS. 6 and 7 show another embodiment of the present invention, in which the amount of plowing can be switched to two levels: a large amount and a small amount. That is, the cutting edge 13a with a shallow groove, the cutting edge 13c with an intermediate depth groove, and the cutting edge 13b with a deep groove are arranged alternately on the cutting edge of the fixed blade 13, and the cutting edge of the movable blade 15 is arranged at the tip A of the cutting edge of the fixed blade 13. The blade is slid between the blade depth B of the shallow groove and the blade depth B of the shallow groove to perform circular cutting, and the blade is slid between the blade depth B of the shallow groove and the blade depth C of the intermediate depth groove to perform a wide plow cut.
It is made to slide between the blade depth C of the intermediate depth groove and the blade depth D of the deep groove, so that less plow cutting can be performed. In response to this, the operation knob 9 can be switched to three stages: a high-grow position, a low-grow position, and a round-cut position, and the power changeover switch 20 is a three-contact type, so that when it is in the low-grow position, the diode 25 plus diode 26
By connecting the battery 5 to the motor 4 through the , the motor 4 rotates at the normal rotation speed and high power in the round cutting position, and when the operating knob 9 is switched to the wide position, the motor 4 rotates at the normal rotation speed. less than the number of revolutions. For example, if the motor 4 rotates at 1/2 rotation speed and then switches to the low clearance position, the rotation speed of the motor 4 will be even lower than the normal rotation speed. For example, make it rotate at 1/4 rotation speed. That is, the rotation speed of the motor 4 is reduced in proportion to the amount of hair introduced into the fixed blade 13. Further, when the motor 4 is driven using a commercial power source, the power can be controlled by switching between full-wave rectification and half-wave rectification.

In the above embodiment, the movable blade 15 was moved forward and backward relative to the fixed blade 13 in adjusting the amount of hair cut.
Conversely, the amount of hair cut may be adjusted by moving the fixed blade 13 forward and backward relative to the movable blade 15.

As explained above, according to the present invention, in the electric clipper in which the fixed blade 13 and the movable blade 15 can be moved back and forth relatively to perform circular cutting and plow cutting, the movable blade 15 or the fixed blade 13 can be moved forward and backward. When mowing the plow, the power of the motor 4 is suppressed via the power changeover switch 20, which is different from the conventional method, which uses the same power for both round mowing and plow mowing. In comparison, battery-operated batteries can extend the usable life of the battery. Moreover, the switching operation of the power changeover switch 20 can be changed to the movable blade 15 or the fixed blade 13.
It is very easy to use because it can be performed automatically in conjunction with the forward and backward movements of the robot. In addition, by lowering the rotational speed of the motor 4 during mowing, there are advantages such as alleviating the fear of over-cutting and allowing the amount of hair to be trimmed to be grasped intuitively by the change in the sound of the rotational speed change. Furthermore, in the case of plow mowing or edge cutting, the cutting edge must be accurately placed at the cutting position, but by saving power, unnecessary camera shake can be reduced and accurate cutting can be achieved.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an embodiment of the electric hair clipper according to the present invention, FIG. 2 is a plan view showing the inside,
FIG. 3 is a partially cutaway side view, FIG. 4 is a plan view of the blade edge showing circular cutting and plowing conditions, and FIG. 5 is an electric circuit diagram. FIG. 6 is an internal plan view showing another embodiment of the electric hair clipper according to the present invention, and FIG. 7 is an electric circuit diagram. 1... Body case, 4... Motor, 13... Fixed blade, 15... Movable blade, 20... Power changeover switch.

Claims (1)

[Claims] 1. A fixed blade 13, a movable blade 15 in sliding contact with the fixed blade 13, and a means for adjusting the amount of hair cut by relatively moving the fixed blade 13 and the movable blade 15 back and forth in a direction orthogonal to the sliding direction. An electric hair clipper comprising: a motor 4 that drives a movable blade 15; and a power changeover switch 20 that switches the motor 4 to low power in conjunction with relative forward movement of the fixed blade 13 and the movable blade 15.