JPS6138716B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver in which a comb-shaped movable blade reciprocates with respect to a comb-shaped fixed blade to shave unwanted hair.

Conventionally, an electric shaver having a comb-shaped fixed blade 16' and a movable blade 17' that reciprocates with respect to the fixed blade 16' has been constructed as shown in FIG. 1, for example. Here, 23' is a joint, 21' is a joint spring, and 1
8' is an eccentric shaft, and 19' is a drive rod. In such a conventional example, if the drive block (motor shaft) and the drive transmission part (eccentric shaft) are not in the same block (integrated), the transmission part (eccentric shaft)
It is not possible to suppress vibrations such as vertical movement. Furthermore, in the conventional example described above, in the drive transmission component, the joint spring 21' that suppresses vibration can only be placed above the drive conversion component (drive rod), and the dimension above the drive conversion component (drive rod) must be large. The upper surface of the notch block 30 and the fixed blade 16' and movable blade 1
Since the dimension between 7' and the trimmer blade has increased, the difference in dimension a becomes a nuisance during use, especially when shaving armpit hair, making it difficult to use.

The present invention has been made in view of the above points, and an object of the present invention is to provide an electric shaver that can prevent vertical vibration of the reciprocating motion transmission means and reduce noise. be.

The present invention will be explained in detail below with reference to Examples. Reference numeral A denotes the electric shaver main body, in which a power supply block consisting of a motor 3 and a battery is housed inside a housing 2.
The motor 3 is driven by the power source of the power supply block, and the rotating shaft 6 of the motor 3 projects upward, and a gasket 7 is attached around the rotating shaft 6 to protect the motor 3 from dust. It has been done. Here 11
is a blade mount provided at the upper end of the housing 2, and has a female thread 12 carved on the inner periphery. C is a cutting blade block, which consists of a base 14 and a rotating plate 15 fixed to the base 14, a blade holder 1, and a rotating plate 1.
A cylindrical mounting base 26 to which the blade 5 is rotatably attached, a comb-shaped fixed blade 16, a comb-shaped movable blade 17, an eccentric shaft 18 that transmits driving force to the movable blade 17, and a drive rod 1.
9, a cover 20 that holds the eccentric shaft 18, a joint spring 21 that prevents vibration of the eccentric shaft 18, and the like. Male thread 2 provided on the lower outer periphery of the cylindrical mounting base 26
8 is screwed into the female thread 12 of the blade mount 11. A trimmer blade consisting of a fixed blade 16 and a movable blade 17 is held on the base 14 by fitting the locking portion 22a of the push-up spring 22 into the locking hole of the base 14. The eccentric shaft 18 is fitted into a joint 23 attached to the rotating shaft 6, and the drive rod 1 is swingably fixed to the boss 15a of the rotary plate 15 with a press-fit pin 24 depending on the eccentricity of the eccentric shaft portion 18a.
The rotational force is transmitted to the drive rod 19 and converted into a reciprocating motion, and the leg portion 25 is inserted into the notch 19a of the drive rod 19.
The signal is transmitted to the driver 25 that hooks a, and the driver 25
The movable blade 17 is driven back and forth. Joint spring 21
A ring plate-shaped body portion 21c is fixed to the cover 20 by a press-fitting claw portion 21a, and a spring portion 21b extending in an arc shape from the inner circumference and having a free end serves as the eccentric shaft 18.
The flange 18b is pressed against the flange 18b. The rotating plate 15 is fixed by fitting into the recess 14a of the base 14 at the locking part 15b, and the hook part 15c of the rotating plate 15 is fitted with the hook fixing part 26a of the cylindrical mount 26, and the base is fixed. A blade holder 1 consisting of a stand f14 and a rotating plate 15 is rotatably attached to a cylindrical mount 26.
Here, 29 is a rotation knob for rotating the blade holder 1. Cylindrical mounting base 26 and blade holder 1
The contact surface 27 with the blade holder 11 is a sloped surface inclined at a certain angle with respect to the upper surface of the blade mount 11, and by rotating the blade holder 1, the outer surface of the cylindrical mount 26 and the fixed blade 16 or the movable blade are connected to each other. The angle with the 17 trimmer blades can be changed.

As described above, the present invention includes a comb-shaped fixed blade, a comb-shaped movable blade that slides back and forth on the fixed blade, a push-up spring that brings the movable blade into elastic contact with the fixed blade, and a reciprocating blade that transmits the reciprocating motion to the movable blade. A blade holder is provided with an eccentric shaft serving as a transmission means, a joint provided on the rotating shaft of a rotating motor is protruded toward the blade holder, and the joint and the eccentric shaft are removably engaged, and the eccentric shaft is Since a flange is provided on the outer periphery and the flange is pressed toward the rotating shaft by a joint spring, even if the blade holder with an eccentric shaft can be attached to and removed from the electric shaver body that has a motor, the joint and eccentric shaft At the engagement part with the eccentric shaft, the eccentric shaft is pressed by the joint spring so that the eccentric shaft deeply engages with the joint, preventing vibrations that float upward of the eccentric shaft, and ensuring that the joint and eccentric shaft are engaged. This prevents the generation of noise, and since a flange is provided on the outer periphery of the eccentric shaft and the joint spring is pressed against the flange, the joint spring is placed between the trimmer blade of the fixed blade or movable blade and the motor. This makes it easier to use by reducing the distance between the trimmer blade and the top surface.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional example, FIG. 2 is a front sectional view of an embodiment of the present invention, and FIG. 3 is a side sectional view of FIG.
FIG. 4 is an exploded perspective view of FIG. 2, in which 1 is a blade holder, 3 is a motor, 6 is a rotating shaft, 16 is a fixed blade, 17 is a movable blade, 18 is an eccentric shaft, 21 is a joint spring, 23 is the joint, and A is the electric shaver body.

Claims (1)

[Claims] 1. A comb-shaped fixed blade, a comb-shaped movable blade that slides back and forth on the fixed blade, a push-up spring that brings the movable blade into elastic contact with the fixed blade, and an eccentric as a reciprocating motion transmission means that transmits the reciprocating motion to the movable blade. The shaft and the blade holder are equipped,
A joint provided on the rotating shaft of a rotating motor is projected toward the blade holder, the joint and the eccentric shaft are removably engaged, a flange is provided on the outer periphery of the eccentric shaft, and the flange is connected to the rotating shaft side. An electric shaver characterized by being pressed by a spring.