JPH0638863U - Electric equipment with fixed blade and movable blade - Google Patents

Abstract

(57) [Abstract] [Purpose] An electric device equipped with a fixed blade and a movable blade that captures irregularities on the skin as appropriate and that allows the cutting edge to reach dented or intricate parts of the skin and does not leave unshaved parts. provide. [Structure] The knurled blade block 4 includes a blade base 7, a fixed blade 8 connected to the blade base 7, a movable blade 9, and a movable blade that is reciprocated by a motor to be connected to the movable blade 9. 9, a vibrating lever 10 that transmits the force to the movable blade 9, a pressing piece 11 that adjusts the contact pressure between the fixed blade 8 and the movable blade 9, and a pedestal 12 that engages with the blade base 7 and supports the pressing piece 11. Has been done. A boss 13 is projectingly provided at a central portion of the blade base 7, the fixed blade 8 is rotatably attached to the boss 13, and the fixed blade 8 is pushed forward on both left and right sides of the boss 13. The spring 14 is attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric device having a fixed blade and a movable blade, such as an electric hair clipper and a razor blade additionally provided to an electric razor.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, an electric device having a fixed blade and a movable blade, such as an electric hair clipper or a razor blade additionally provided to an electric razor, has been disclosed in, for example, Japanese Utility Model Publication No. 62-26055. As shown, the fixed blade is completely fixed to the base, and the movable blade connected to the oscillator that converts the rotational movement of the motor into reciprocating movement slides on the fixed blade, so that hair and whiskers are removed. It is widely known that cutting is done.

However, since this fixed blade is completely fixed to the blade base, and even the movable blade cannot move in the direction perpendicular to the sliding contact direction, it sufficiently follows unevenness of the skin. Can not do it. For this reason, there is a drawback in that the blade edge does not hit the dented or intricate parts of the skin, and the unshaved part can be left.

[0004]

[Problems to be solved by the device]

 The purpose of this invention is to eliminate the above-mentioned drawbacks, by appropriately grasping the irregularities of the skin, etc., the cutting edge can reach the recessed or complicated places of the skin, and the fixed blade and the movable blade that do not leave unshaved The present invention provides an electric device equipped with.

[0005]

[Means for Solving the Problems]

 This invention relates to a blade base, a fixed blade rotatably supported by a boss protruding from the blade base, a vibrator for converting a rotational motion of a motor into a reciprocating motion, and the fixed blade. It is characterized in that it is composed of a movable blade that is in sliding contact with.

Further, in this invention, a boss projecting from the blade base rotatably supports the fixed blade at a central portion in the longitudinal direction of the fixed blade, and the blade base always supports the fixed blade of the fixed blade. It is characterized by having a spring that urges it toward the blade edge.

[0007]

[Action]

 According to this invention, since the fixed blade is rotatably supported by the boss protruding from the blade base, the fixed blade can be properly grasped on the unevenness of the skin and also on the dented or complicated place of the skin. The blade edge of wraps around and catches the beard in the recess, eliminating the unshaved portion.

Further, according to this invention, since the spring constantly urges the fixed blade in the blade tip direction, a force for preventing the fixed blade from moving and constantly pushing the fixed blade in the blade tip direction is exerted. Therefore, when the fixed blade is pressed against the skin, or when the skin is raised, the fixed blade presses against the skin by the elastic force of the spring in accordance with the pressing against the skin, and further adheres. As a result, the unevenness of the skin is properly captured and the unshaved portion is eliminated.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings by taking a razor blade of an electric shaver as an example.

FIG. 1 is a perspective view showing an external appearance of an electric shaver using the present invention. The electric shaver has a main body case 1 and a shaver head 2 detachably attached to the upper end of the main body case 1 to form an outer shell. The main body case 1 is provided with a drive switch 3 that slides up and down along the main body case 1 and a knurled blade block 4 that can be freely projected and stored in the main body case 1. On the side surface of this, there is provided a slitting blade switch 5 for projecting and storing the slitting blade block 4 mentioned above. On the other hand, inside the main body case 1, a Ni-Cd battery and a motor for driving the electric razor are provided, which are not shown. Further, the shaver head 2 has an outer blade 6 stretched in an arch shape, and the inner surface of the outer blade 6 is attached in a state where an inner blade (not shown) is in pressure contact with the outer blade 6 and the inner blade. The beard is cut by the cooperation of the blade.

FIG. 2 is an exploded perspective view of the knurling blade block 4. The knurling blade block 4 includes a blade base 7, a fixed blade 8 connected to the blade base 7, a movable blade 9, and a movable blade 9 connected to the movable blade 9 for reciprocating movement by a motor. A vibration lever 10 for transmission, a pressing piece 11 for adjusting the contact pressure between the fixed blade 8 and the movable blade 9, and a pedestal 12 that engages with the blade base 7 and supports the pressing piece 11. Has been done.

A boss 13 is provided at the center of the blade base 7, and the fixed blade 8 is rotatably attached to the boss 13. Further, the fixed blade 8 is mounted on both left and right sides of the boss 13. A spring 14 is attached so as to push it toward the cutting edge. The fixed blade 8 is supported by the boss 13 and can rotate about the boss 13 as a fulcrum, but it is always pushed out uniformly in the blade tip direction by the action of the spring 14.

As described above, the fixed blade 8 can rotate about the boss 13 as a fulcrum when it is pressed against the skin or the like with a force larger than the spring biasing force of the spring 14, but at this time as well. The spring biasing force of the spring 14 acts to push back the skin. On the other hand, if the fixed blade 8 is not pressed against the skin or the like, the fixed blade 8 is uniformly pushed out in the blade tip direction by the spring biasing force of the spring 14, and is stably maintained so as to be parallel to the movable blade 9 (see FIG. See a)). That is, the spring 14 can prevent the fixed blade 8 from moving. On the other hand, the cutting edge of the fixed blade 8 is provided with an end portion 15 protruding from both sides in the longitudinal direction, and at the time of assembly, the end portion 15 is located at a position facing the end wall surface 16 of the blade base 7 and has a slight gap X. The fixed blade 8 is rotatable by the gap X, and the rotation of the fixed blade 8 is restricted by the contact of the end portion 15 with the end wall surface 16. (See Fig. 3 (b)). This prevents the fixed blade 8 from rotating excessively and losing the proper cutting edge angle between the fixed blade 8 and the movable blade 9.

In the above-mentioned structure, when using the knurling blade according to the present invention, when the knurling blade is used on a smooth place with less unevenness of the skin, the pressing force against the skin is small, and the fixed blade 8 has the spring 14 The beard is shaved while being kept parallel to the movable blade 9 by the action of. On the other hand, when it is used on dented or intricate parts of the skin, the cutting edge of the fixed blade 8 wraps around and catches the beard in the dented area, leaving no shaving left. In addition, when the skin is raised, the skin and the fixed blade are elastically pressed against each other against the force of pressing the fixed blade, and even more closely contact with each other, so that the unshaved portion does not remain.

[0015]

[Effect of device]

 According to this invention, since the fixed blade is rotatably supported by the boss protruding from the blade base, the fixed blade can be properly grasped on the unevenness of the skin and also on the dented or complicated place of the skin. The blade edge of the can wraps around to catch the beard in the recess and eliminate the unshaved portion.

Further, according to this invention, the spring constantly urges the fixed blade in the blade tip direction, so that the fixed blade is prevented from moving and the fixed blade is constantly pushed in the blade tip direction. Therefore, when the fixed blade is pressed against the skin, or when the skin is raised, the fixed blade presses against the skin by the elastic force of the spring in accordance with the pressing against the skin, and further adheres. As a result, it is possible to properly capture the unevenness of the skin and eliminate the unshaved portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external appearance of an electric shaver using the present invention.

FIG. 2 is an exploded perspective view of a razor blade block according to the present invention.

FIG. 3 is a front view showing a stationary state (a) and a rotationally moved state (b) of the fixed blade according to the present invention.

[Explanation of symbols]

 1 Body Case 2 Shaver Head 3 Drive Switch 4 Creasing Blade Block 5 Creasing Blade Switch 6 Outer Blade 7 Blade Stand 8 Fixed Blade 9 Movable Blade 10 Vibrating Lever 11 Pressing Piece 12 Cradle 13 Boss 14 Spring 15 End 16 Edge wall

Claims (2)

[Scope of utility model registration request] 1. A blade base, a fixed blade rotatably supported by a boss protruding from the blade base, a vibrator for converting the rotational movement of a motor into a reciprocating movement, and the fixed blade. An electric device comprising a fixed blade and a movable blade, which is characterized by comprising a movable blade slidably contacting the blade. 2. A boss projecting from the blade base rotatably supports the fixed blade at a central portion in the longitudinal direction of the fixed blade, and the blade base constantly positions the fixed blade in the blade tip direction of the fixed blade. An electric device comprising a fixed blade and a movable blade according to claim 1, further comprising a spring for urging.