JP4507136B2 - Electric razor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric razor in which a slide blade unit and a slide knob such as a switch knob for starting a motor and a switching knob for operating the tip unit are arranged on one side of the razor body.
[0002]
[Prior art]
This type of electric shaver is known, for example, in Japanese Utility Model Publication No. 6-1108. In this case, as shown in FIG. 9, a saw blade unit 41 is disposed on one side of the razor head 40, and a switch knob 42 for starting the motor and a switching knob for raising and lowering the saw blade unit 41 are provided therebelow. 43. Reference numeral 44 is an outer blade, and 45 is an inner blade.
[0003]
[Problems to be solved by the invention]
When shaving with the scraper blade unit 41 stored in a non-use position, a part of the cut shavings falls along the surface of the razor body, and the switch knob 42 and the switching knob 43 are accommodated. The slide recess 46 may enter the slide recess 46 and may become clogged between the sliding contact surfaces between the knobs 42 and 43 and the slide recess 46. In some cases, fluff enters the inside of the case through an opening formed in the slide recess 46, causing the movable part to malfunction and the electrical part to malfunction.
[0004]
An object of the present invention is to provide an electric razor capable of preventing the cut flakes from falling into the slide recess as much as possible, and preventing malfunction of the movable parts and poor conduction of the electric parts due to the penetration of the fluff. There is to do. The object of the present invention is to form a spindle-shaped fluff guiding portion formed of a partial spherical shell wall on the outer surface of the upper end of the crease case, and to detour the fluff sliding off the outer blade by the fluff guiding portion. An object of the present invention is to provide an electric razor that can prevent hair dust from entering the slide recess as much as possible.
[0005]
The object of the present invention is to utilize a spindle-shaped fluff guiding portion and to provide a shaft support structure on the inner surface thereof. An object of the present invention is to provide an electric razor capable of reducing the size of the recess for accommodating the blade unit and making it compact. The object of the present invention is to prevent the side wobbling of the squeezing case during squeezing and to ensure a sufficient oscillating stroke of the movable blade. An object of the present invention is to provide an electric razor that can eliminate the generation of noise associated with the lateral swing of a sled case.
[0006]
[Means for Solving the Problems]
The electric razor according to the present invention is provided with a groove recess 10 for accommodating the scraper blade unit 7 and a slide recess 11 for accommodating the slide knobs 8 and 9 on one side of the main body case 1. The saw blade unit 7 includes a scraper case 15 that is pivotably supported by the main body case 1, and a fixed blade 16 and a movable blade 17 that are assembled to the inner surface of the scraper case 15. A spindle-shaped fuzz guide portion 23 made of a partial spherical shell wall is formed on the upper outer surface of the wrinkle case 15 so as to bulge toward the outer surface of the case.
[0007]
The wrinkle case 15 is a plastic molded product that integrally includes a blade mounting portion 22 for mounting the fixed blade 16 and the movable blade 17 and a fluff guide portion 23 bulging at the upper end of the blade mounting portion 22. Consists of. The left and right width W1 of the fuzz guide 23 is set to be larger than the left and right width W2 of the slide recess 11. Furthermore, the outline of the fluff guide 23 as seen from above protrudes outward from the outline of the slide knobs 8 and 9.
[0008]
The connecting piece 24 projecting from the inner surface of the fuzz guide 23 is pivotally supported by a bracket 25 projecting from the upper part of the inner surface of the recess 10. As a result, the scraper blade unit 7 is supported in an undulating manner at a non-use position where it fits in the scraper recess 10 and a use position protruding laterally from the scraper recess 10. The slide knobs 8 and 9 include a switch knob 8 for starting the motor and a switching knob 9 for raising and lowering the sliding blade unit 7.
[0009]
A concave arc-shaped receiving wall 30 that matches the outer shape of the fluff guiding portion 23 is provided on the upper edge of the wrinkle recess 10. An inclined surface wall 33 for receiving the peripheral surface of the fuzz guide portion 23 is provided inside the upper edge of the wrinkle recess 10 in a state in which the wrinkle blade unit 7 is swung up and swung to the use position. The left and right widths of the slide recess 11 and the left and right widths of the blade mounting portion 22 are substantially matched, and both ends of the fluff guiding portion 23 are protruded from the left and right side edges of the blade mounting portion 22 to the left and right outer sides.
[0010]
[Operation and effect of the invention]
Since the spindle-shaped fuzz guide part 23 made of a partial spherical shell wall is bulged on the upper outer surface of the wrinkle case 15, the fuzz that has slid down from the outer blade 3 side is removed from the fuzz guide part 23. Then, it is guided to fall to either the left or right along the surface. Therefore, it is possible to prevent the fluff from falling toward the slide concave portion 11 below the crease blade unit 7. It is possible that the fluff falls down over the fuzz guide 23. However, since the fuzz guide part 23 bulges out in a spindle shape, the fuzz falls outside the case by the swelled dimension of the fuzz guide part 23. Therefore, it is possible to prevent well the hair chips that have passed over the hair guide part 23 from entering the slide recess 11.
[0011]
According to the sliding case 15 in which the blade mounting portion 22 and the spindle-shaped fluff guide portion 23 are integrally molded with plastic, the bulge-formed fluff guide portion 23 acts as a reinforcing body. The structural strength of the wrinkle case 15 can be increased. If the left and right width W1 of the fuzz guide part 23 is set to be larger than the left and right width W2 of the slide concave part 11, the falling trace of the fuzz that is guided by the fuzz guide part 23 and falls from both side ends thereof is Therefore, it is possible to more reliably prevent the dust from entering the slide recess 11. The outer line of the fluff guiding part 23 protrudes outward from the outer line of the slide knobs 8 and 9 because the trace of the fluff that falls over the fluff guiding part 23 is moved outward from the slide knobs 8 and 9. This is because the fluff is prevented from entering the slide recess 11.
[0012]
According to the shaft support structure in which the connecting piece 24 is provided on the inner surface using the internal space of the fuzz guide 23 and the connecting piece 24 is pivotally supported by the bracket 25 provided in the recess 10. The total thickness including the fixed blade 16 and the movable blade 17 of the blade mounting portion 22 of the case 15 can be made smaller than that of a conventional blade blade unit of this type. Accordingly, it is possible to make the razor more compact by forming the shallow recess 10 as shallow as the total thickness can be reduced, or by reducing the projecting dimension of the scraper blade unit 7 from the main body case 1. According to the electric shaver in which the switch knob 8 for starting the motor and the switching knob 9 for raising and lowering the squeezing blade unit 7 are arranged adjacent to the slide recess 11, the switch knob 8 is turned on when the shaver is shaved. Since the knob 8 can be displaced to the upper end side of the slide recess 11 to cover the upper opening surface of the slide recess 11, it is possible to well prevent the dust from falling into the slide recess 11.
[0013]
According to the electric razor provided with the concave arc-shaped receiving wall 30 that matches the outer shape of the fluff guiding portion 23 at the upper edge of the slide concave portion 11, the fluff guiding portion 23 is used when the kirizori blade unit 7 is used. Can be prevented by the receiving wall 30 and the case 15 can be prevented from shaking due to the vibration force for driving the blade. In the case where the fluff guide portion 23 is received by the inclined surface wall 33, it is possible to more effectively suppress the lateral vibration of the wrinkle case 15. Accordingly, the effective amount of the crossing stroke between the fixed blade 16 and the movable blade 17 can be increased to improve the cutting function of the scraper blade, and the generation of noise due to the lateral vibration of the scraper case 15 can be eliminated.
[0014]
The both ends of the fluff guiding portion 23 are protruded from the left and right side edges of the blade mounting portion 22 to the left and right outer sides as described above. In addition to being effective in preventing direct fall, the external force in both the vertical and horizontal directions can be received by the protruding parts on both sides, so even if, for example, an electric razor falls on the floor and receives impact force, By avoiding the external force from concentrating on the shaft support structure portion of the case 15, it is possible to reliably prevent the shaft support structure from being damaged.
[0015]
【Example】
1 to 8 show an embodiment of an electric shaver according to the present invention. In FIG. 2, the electric razor has a head portion including an inner blade 2 and an outer blade 3 on the upper part of the main body case 1. Inside the main body case 1, there are provided a motor 4, a secondary battery 5, an inner blade driving vibrator 6 for converting the rotational power of the motor 4 into reciprocating motion, and the like. On the top and bottom of the front side surface of the main body case 1, a saw blade unit 7 and a pair of left and right slide knobs 8 and 9 are arranged.
[0016]
The crease blade unit 7 and the slide knobs 8 and 9 are accommodated in the crease recess 10 and the slide recess 11 provided in the main body case 1, respectively. In the figure, reference numeral 12 denotes an outer blade holder that supports the outer blade 3. Of the pair of slide knobs 8 and 9, the left slide knob 8 in FIG. 2 is a switch knob for starting the motor, and the motor 4 can be started by sliding the knob upward.
[0017]
In FIG. 4, the crease blade unit 7 presses the crease case 15, the fixed blade 16 fixed to the inner surface thereof, the movable blade 17 supported so as to be slidable left and right, and the movable blade 17 so as not to fall off. The holding plate 18 is held. The movable blade 17 is provided with a passive piece 19, and the movable piece 17 can be driven back and forth by the vibrator 6 by engaging the passive piece 19 with a driving piece 20 provided at the center of the front surface of the vibrator 6.
[0018]
In FIG. 6, the wrinkle case 15 is formed by integrally forming a square blade mounting portion 22 for mounting the fixed blade 16 and the movable blade 17 and a fluff guide portion 23 provided at the upper end of the blade mounting portion 22. Made of plastic molded products. The fuzz guide part 23 is formed of a spindle-shaped bulging wall made up of a partial spherical shell wall, and connecting pieces 24 project from two left and right positions closer to the center of the inner surface. By pivotally supporting the connecting piece 24 with a pair of brackets 25 (see FIG. 5) protruding from the inner surface of the recess 10, the entire scraper blade unit 7 is supported in an up and down manner. The connecting piece 24 is pivotally supported by a shaft 25a provided on the bracket 25 side.
[0019]
A slide knob (switching knob) 9 is provided to switch the sliding blade unit 7 between the use position and the non-use position as necessary, and the operation thereof is performed through the relay piece 26. To tell. 5 and 6, the relay piece 26 is disposed on the inner surface of the case 1 of the main body case 1, and is engaged and connected to the slide knob 9 and the four claw pieces 9 a so as to be slidable together. Further, the operation pin 28 at the upper end of the arm portion 27 is connected to one connecting piece 24. Accordingly, when the slide knob 9 is slid upward from the state shown in FIG. 2, the squeezing blade unit 7 swings upward about the shaft 25a, and the whole is squeezed laterally from the recess 10 as shown in FIG. Switch to position. Only in this position is the passive piece 19 engaged with the drive piece 20.
[0020]
When shaving by operating the inner blade 2, a part of the cut fluff falls along the outer blade holder 12. In order to prevent the hair dust from entering the slide recess 11, a hair dust guiding portion 23 is provided on the upper portion of the creaking case 15. The left and right width W1 of the fluff guiding portion 23 is set to be larger than the left and right width W2 of the slide concave portion 11 and the wrinkle concave portion 10, and both ends thereof are protruded from the both side edges of the blade mounting portion 22 to the left and right. Furthermore, the outline of the fluff guide 23 in a plan view protrudes outward from the outline of the pair of slide knobs 8 and 9 as shown in FIG.
[0021]
When the scraper blade unit 7 is used, the scraper case 15 tends to sway from side to side under the vibration of the movable blade 17 reciprocally driven by the vibrator 6. In order to restrict this lateral vibration and increase the effective amount of the crossing stroke of the fixed blade 16 and the movable blade 17, a concave arc-shaped receiving wall 30 (see FIG. 3) is provided on the upper edge of the crease recess 10, The peripheral surface of the fuzz guide 23 at the use position is received by the receiving wall 30. Further, as shown in FIG. 8, an inclined surface wall 33 is provided inside the inner surface of the receiving wall 30 to receive the peripheral surface of the fuzz guide portion 23 in a surface contact state.
[0022]
In a state where the kirizori blade unit 7 is incorporated in the knurled recess 10, both ends of the fluff guiding portion 23 protrude from the left and right edges of the blade mounting portion 22 to the left and right, and this protruding portion is formed on the receiving wall 30. It is received by a continuous V-shaped corner wall 31. As described above, when both ends of the fluff guiding portion 23 are supported by the corner wall 31, it is possible to load the corner wall 31 with external forces in the vertical and horizontal directions that act on the sliding case 15 due to a drop impact. Therefore, it is possible to prevent the drop impact from concentrating on the shaft support structure portion between the connecting piece 24 and the bracket 25, and to prevent the shaft 25a from coming off and the connecting piece 24 and the bracket 25 from being damaged.
[0023]
In the above-described embodiment, the slide knob 11 for starting the motor and the slide knob 9 for raising and lowering the sliding blade unit 7 are disposed adjacent to each other in the slide recess 11, but only one of the knobs 8 and 9 is provided. May be arranged in the slide recess 11.
[Brief description of the drawings]
FIG. 1 is a perspective view.
FIG. 2 is a front view.
FIG. 3 is a front view showing a crease blade unit and its peripheral structure.
FIG. 4 is a vertical sectional side view of the slash blade unit when not in use.
FIG. 5 is a longitudinal sectional side view of the sledge blade unit in use.
FIG. 6 is an explanatory diagram showing a posture switching structure of a crease blade unit.
FIG. 7 is a plan view of an electric razor.
FIG. 8 is a plan view in which a part of the crease case is broken.
FIG. 9 is a perspective view showing a conventional electric razor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case 7 Kiseki blade unit 8 Slide knob 9 Slide knob 10 Kiseki recess 11 Slide recess 15 Kisori case 16 Fixed blade 17 Movable blade 22 Blade mounting part 23 Fluff guide part

Claims (6)

On the upper and lower sides of the main body case (1), there are provided a groove recess (10) for accommodating the blade edge unit (7) and a slide recess (11) for accommodating the slide knob (8, 9). And
The rivet blade unit (7) includes a crease case (15) that is pivotably supported by the main body case (1), and a fixed blade (16) assembled to the inner surface of the crease case (15). And a movable blade (17),
An electric shaver characterized in that a spindle-shaped fuzz guide part (23) made of a partial spherical shell wall is formed to bulge toward the outer surface of the case on the upper outer surface of the wrinkle case (15). The wrinkle case (15) has a blade attachment portion (22) for mounting the fixed blade (16) and the movable blade (17), and a fluff guide portion bulged at the upper end of the blade attachment portion (22). (23) and a plastic molded product integrally provided with
The left and right width (W1) of the fuzz guide part (23) is set to be larger than the left and right width (W2) of the slide concave part (11), and the outline of the fuzz guide part (23) viewed from above is a slide knob ( The electric razor according to claim 1, wherein the electric razor protrudes outward of the case from the outer line of 8-9). A connecting piece (24) protruding from the inner surface of the fluff guiding portion (23) is pivotally supported by a bracket (25) protruding from the upper surface of the inner surface of the groove recess (10). (7) is supported in a undulating manner at a non-use position that fits in the crease recess (10) and a use position that projects laterally from the crease recess (10),
The electric shaver according to claim 1, wherein the slide knob (8, 9) comprises a switch knob ( 9) for activating the sliding blade unit (7) when the switch knob (8) for starting the motor.   The electric shaver according to claim 1, wherein a concave arc-shaped receiving wall (30) matching the outer shape of the fluff guiding portion (23) is provided on the upper edge of the wrinkle recess (10).   An inclined surface wall (33) that receives the peripheral surface of the fluff guiding portion (23) on the inner side of the upper edge of the groove recess (10) in a state where the blade blade unit (7) is swung up to the use position and swung. The electric shaver according to claim 1 or 4, wherein:   The left and right widths of the slide recess (11) and the left and right widths of the blade mounting portion (22) are substantially the same, and both ends of the fluff guiding portion (23) are left and right outside the left and right side edges of the blade mounting portion (22). The electric shaver according to claim 2, which protrudes in the direction toward the surface.

Images