JP2005304646A - Electric razor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise and vibrations generated at the time of using an electric razor. <P>SOLUTION: A vibration proof member 8 is attached to the end part on the side of a cutter 2 of a main body case 1 provided with the cutter 2, and the end face and/or inner surface of a frame 3 provided with a foil 4 is in close contact with the vibration proof member 8. The vibration proof member 8 performs damping, prevents the transmission of the vibrations from the main body case 1 to the side of the frame 3 and the transmission of the vibrations from the side of the blade frame 3 to the side of the main body case, and reduces the vibrations of the entire electric razor. It is effective for reducing the noise as well. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric razor that can reduce vibration and noise generated by the movement of an inner blade of the electric razor.

A conventional electric shaver is configured by detachably covering a body case having an inner blade and an inner blade driving device with a blade frame having an outer blade (Patent Document 1).
The scissors that have penetrated a large number of small holes provided in the outer blade are sheared in cooperation with the outer blade by reciprocating or rotating the inner blade.

Japanese Patent Laid-Open No. 2001-232078

Generation of vibration and noise due to the movement of the inner blade is inevitable. In particular, the electric razor in which the inner blade reciprocates is greatly vibrated, and there is an uncomfortable feeling due to the equipment failure due to the vibration or the vibration being transmitted to the hand.
Further, due to an error in the component dimensions, a fitting failure between the outer blade mounting blade frame and the main body case may occur, which may promote generation of vibration and noise.
The present invention clarifies an electric razor that can solve the above problems.

  The present invention relates to an electric shaver in which a body case (1) having an inner blade (2) and an inner blade driving device (5) is detachably covered with a blade frame (3) having an outer blade (4). In addition, one or a plurality of vibration isolation members (8) are attached to the blade frame attachment portion (13) of the main body case (1), and the vibration isolation members (8) are connected to the end surface of the blade frame (3) and / or Or close to the inner surface.

The anti-vibration member (8) on the main body case (1) is in close contact with the end face and / or inner surface of the blade frame (3). The transmission of vibration from the blade frame (3) side to the blade case (3) side and the transmission of vibration from the blade frame (3) side to the main body case side can be prevented, and the vibration of the entire electric shaver can be reduced. Moreover, noise can be reduced by interposing an anti-vibration member (8) between the main body case (1) and the blade frame (3).
Furthermore, even when a fitting failure due to a dimension error occurs in the fitting portion between the blade frame (3) and the main body case (1), the elastic deformation of the vibration isolating member (8) in close contact with the blade frame (3). Therefore, it is possible to absorb dimensional errors and eliminate poor fitting.

FIG. 1 shows a main body case (1) and a blade frame (3).
The main body case (1) is formed in a vertically long shape so that it can be easily held by hand. As shown in FIG. 2, a long blade frame attaching portion (13) is formed in the upper end portion in a direction perpendicular to the longitudinal direction of the case.
The blade frame mounting portion (13) is fitted with an annular flat surface (13a) that covers the end surface of the first blade frame (31) described later and the inner surface of the first blade frame (31) with a fitting clearance. And a low wall surface (13b).
The wall surface (13b) extends along the inner peripheral surface of the first blade frame (31), but is divided at a plurality of locations.
An ON-OFF switch (10) is arranged at the upper front of the main body case (1).
A substantially elliptical land portion (11) is provided inside the blade frame attaching portion (13), and a concave portion (14) is formed in the center of the land portion (11).
Two inner blade mounting shafts (21) and (21) project through the bottom surface of the recess (14) and protrude adjacent to each other in a direction perpendicular to the longitudinal direction of the land portion (11).
At the tip of the inner blade mounting shaft (21) (21), the inner blade (2) (2) can be swung relative to the shaft (21) (21), slidable in the axial direction, and detachably attached. It has been.
The inner blade (2) is urged outward by a spring (22).
The inner blade (2) has a known configuration in which a number of arcuate blades are arranged in the longitudinal direction of the land portion (11).

The inner blade mounting shafts (21) and (21) are connected to an inner blade driving device (5) built in the main body case (1).
The inner blade drive device (5) may be configured as long as the inner blade mounting shafts (21) and (21) can be reciprocated in the longitudinal direction of the land portion (11).
As shown in FIG. 4, the inner blade driving device (5) of the embodiment is connected to a rotating shaft (52) of a motor (51) with a cam shaft (53) having two eccentric shafts (53a) and (53b). Each eccentric shaft (53a) (53b) is slidably fitted in the groove (54a) (55a) of the slide member (54) (55).
The eccentric shafts (53a) and (53b) are shifted by 180 ° with respect to the rotation center of the cam shaft (53), and the rotation of the rotation shaft (52) causes the slide members (54) and (55) to be opposite to each other. Move back and forth.
Inner blade mounting shafts (21) and (21) are provided on the slide members (54) and (55) so as to be able to move somewhat with respect to the slide members (54) and (55).

As shown in FIG. 4, the two outer blades (4) and (4) covering the two inner blades (2) and (2) are held by the blade frame (3).
The outer blade (4) has a known configuration in which a thin metal plate in which a large number of small holes through which the blade passes is formed at close intervals is bent in an arc shape corresponding to the arc of the inner blade (2).
The blade frame (3) includes a first blade frame (31) that fits into the blade frame mounting portion (13) of the main body case (1), and a second blade frame (32) that covers the first blade frame (31). It is comprised by.
The outer blades (4) and (4) are attached to the second blade frame (32) so as to be slidable and detachable in the axial direction of the inner blade mounting shafts (21) and (21).
In the case of the embodiment, the second blade frame (32) is fitted in a fixed state with respect to the first blade frame (31), but the second blade frame (32) with respect to the first blade frame (31). The second blade frame (32) can be naturally swung according to the unevenness of the face.

Lock means (7) and (7) for locking the blade frame (3) are provided at both ends of the blade frame attachment portion (13) of the main body case (1).
The lock means (7) includes a lock claw (71) that can be hooked in a recess (33) provided on the inner surface of the first blade frame (31), and a spring that biases the lock claw (71) outward. (72) and a lock release piece (73) formed integrally with the lock claw (71) and slidably penetrating the main body case (1) and projecting laterally.
When the blade frame (3) is fitted to the blade frame mounting portion (13) of the main body case (1), the lock claw (71) is pushed against the end surface of the first blade frame (31) and resists the spring (72). When the end face of the first blade frame (31) comes into contact with the flat surface (13a) of the blade frame mounting portion (13), the lock claw (71) is recessed in the blade frame (3). Fit into (33) and lock the blade frame (3).
When the unlocking piece (73) is pressed, the lock claw (71) is retracted and the blade frame (3) is unlocked.

A cover plate (6) is attached to the inside of the blade frame attachment portion (13).
The cover plate (6) is fixed to the land portion (11) with screws (62) and (62), and covers the recessed portion outside the land portion (11). The cover plate (6) is provided with a window hole (61) through which the inner blade mounting shafts (21) and (21) pass through with a margin for the movement of the shaft.
Further, the cover plate (6) is provided with notches (62) and (62) within a range in which the lock claw (71) of the lock means (7) moves.

The feature of the present invention is that an anti-vibration member (8) is interposed between the main body case (1) and the blade frame (3) as shown in FIG.
The vibration isolation member (8) is formed of a member having appropriate hardness and elasticity for vibration isolation, such as natural rubber and synthetic rubber. As shown in FIG. 2, the vibration isolating member (8) of the embodiment has an L-shaped small block body having a horizontal portion (82) at the lower end of the vertical portion (81).
The main body case (1) is formed with vibration-proof member accommodating portions (12) by notching the blade frame attaching portions (13) at two locations near both ends of the blade frame attaching portion (13).
The vibration isolating member (8) is accommodated in the vibration isolating member accommodating portion (12) with the lateral portion (82) facing downward and outward.
As shown in FIG. 7, the anti-vibration member accommodating portion (12) includes a recess (12a) into which the horizontal portion (82) of the anti-vibration member (8) is fitted, and a vertical guide that guides the back and both sides of the vertical portion (81). It has a groove-like wall (12b).
The upper surface (82a) of the horizontal portion of the vibration isolator (8) protrudes above the plane (13a) of the blade frame mounting portion (13), and the front surface (81a) of the vertical portion of the vibration isolator (8) is the blade frame. It protrudes outside the wall surface (13b) of the attachment portion (13).
The amount that the horizontal part (82) of the vibration isolator (8) protrudes from the flat surface (13a) of the blade frame mounting part (13) is the state where the end surface of the blade frame (3) slightly presses the horizontal part (82). Thus, the blade frame (3) can be locked by the locking means (7).
Further, the amount of the vertical portion (81) of the vibration isolating member (8) protruding from the wall surface (13b) of the blade frame mounting portion (13) is such that the blade frame (3) extends from the wall surface (13b) to the vertical portion (81). The blade frame (3) is fitted to the blade frame mounting portion (13) in a state where is slightly pressed inward.
The cover plate (6) is partially covered with a slight pressing force except for the front side of the vertical portion (81) of the vibration isolation member (8), and the vibration isolation member (8) is attached to the vibration isolation member accommodating portion (12 ) Is prevented from escaping.

However, when the blade frame (3) is fitted to the blade frame mounting portion (13) of the main body case (1), the inner surface on the lower end side of the first blade frame (31) is the vertical portion of the vibration isolation member (8). The front surface (81a) of (81) fits on the wall surface (13b) of the blade frame mounting portion (13) with a slight pressing force. Further, the lock claw (71) of the lock means (7) is attached to the first blade frame (31) while the end surface of the first blade frame (31) presses the lateral portion (82) of the vibration isolating member (8). The blade frame (3) can be attached to the main body case (1) in a locked state by fitting into the recess (33).
When the switch (10) is turned on, the inner blade driving device (5) is activated and the two inner blades (2) and (2) are reciprocated in opposite directions to each other. The outer blade (4) and the inner blade (2) can jointly shear the wrinkles that have entered
The vibration isolator (8) interposed between the blade frame (3) and the main body case (1) cushions, transmits vibration from the main body case (1) to the blade frame (3) side, and the blade frame ( 3) Transmission of vibration from the side to the main body case side can be prevented, and vibration of the entire electric razor can be reduced.
Moreover, noise can be reduced by interposing an anti-vibration member (8) between the main body case (1) and the blade frame (3).
Furthermore, even if the first blade frame (31) and the blade frame mounting portion (13) of the main body case (1) have poor fitting due to dimension error, the vibration isolating member is in close contact with the blade frame (3). Due to the elastic deformation of (8), it is possible to absorb dimensional errors and eliminate poor fitting.

The anti-vibration member (8) of the above-mentioned embodiment is effective in reducing vibration and noise in effect droplets with a small number since the individual anti-vibration members (8) are in close contact with both the end face and the inner face of the blade frame (3) Although effective, even if the vibration isolating member (8) is in close contact with only the inner surface or only the end surface of the blade frame (3), it is effective in reducing the occurrence of vibration and noise.
FIG. 7 shows another embodiment of the vibration isolating member (8), and the vibration isolating member (8) is formed in a T-shaped small block body as viewed from above. The anti-vibration member (8) has the anti-vibration member housing portion (12) of the main body case (1) such that the end face of the blade frame (3) is partially in close contact with the upper surface (8a) of the anti-vibration member (8). ). Alternatively, the anti-vibration member (8) is attached to the anti-vibration member accommodating portion (12) so that the tip surface (8b) is in close contact with the inner surface of the blade frame (3).
In the implementation of the present invention, vibration and noise can be reduced even if the number of the anti-vibration members (8) is not limited to plural.
When a plurality of vibration isolating members (8) are provided, a part of the anti-vibration members (8) are in contact with the inner surface of the blade frame (3), and the remaining anti-vibration members (8) ) Can also be configured to abut against the end face.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
For example, the present invention can also be implemented for an electric razor with a rotating inner blade.

It is a perspective view of a main body case and a blade frame. It is a perspective view of the state which decomposed | disassembled the blade frame, the cover plate, and the vibration isolator. It is a top view of the main body case which abbreviate | omitted the inner blade. It is principal part sectional drawing of an electric razor. It is a top view of the main body case which omitted the inner blade and the cover plate. It is a top view of a cover board. It is an expanded sectional view which shows the close_contact | adherence state of a vibration isolator and a blade frame. It is a disassembled perspective view of the attachment part of the vibration isolator of another Example.

Explanation of symbols

1 Body case
12 Anti-vibration member housing
13 Blade frame mounting part 2 Inner blade
21 Inner blade mounting shaft 3 Blade frame
31 1st blade frame
32 Second blade frame 4 Outer blade 5 Inner blade drive device 7 Locking means 8 Anti-vibration member

Claims (4)

  Main body case with an electric shaver in which a main body case (1) having an inner blade (2) and an inner blade driving device (5) is detachably covered with a blade frame (3) having an outer blade (4). One or more anti-vibration members (8) are attached to the blade frame attachment part (13) of (1), and the anti-vibration members (8) are in close contact with the end face and / or inner surface of the blade frame (3). Electric razor.   The electric shaver according to claim 1, wherein some of the vibration isolating members (8) are in intimate contact with the end face of the blade frame (3) and the remaining vibration isolating members (8) are in intimate contact with the inner surface of the blade frame (3). .   The anti-vibration member (8) is fitted into the anti-vibration member accommodating portion (12) formed on the blade frame attachment portion (13) of the main body case (1), and the anti-vibration member (8) is connected to the blade frame (3). The electric razor according to claim 1 or 2, wherein a contact surface of the metal is exposed.   A lid plate (6) covering the inside of the blade frame mounting portion (13) of the main body case (1) partially covers the vibration isolating member (8) to prevent the vibration isolating member (8) from coming off. The electric shaver according to any one of claims 1 to 3.

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