JP4301418B2 - Reciprocating electric shaver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reciprocating electric shaver provided with a cleaning tool for cleaning an inner blade in a posture rotated and displaced 90 degrees from a normal state.
[0002]
[Prior art]
Electric razors equipped with this type of cleaning tool are known in Japanese Utility Model Laid-Open No. 59-40078 and Japanese Utility Model Laid-Open No. 60-151484. Each includes an attachment frame that is press-fitted and engaged with the razor head, and a brush base that is orthogonal to the longitudinal side portion of the attachment frame, and a cleaning brush is implanted on the lower surface of the brush base.
[0003]
[Problems to be solved by the invention]
As described above, according to the cleaning mode in which the inner blade is rotated 90 degrees from the normal state to perform cleaning, the bristles and the blade body slide relative to each other along the blade groove. Sebum etc. can be cleaned and removed well. However, there are the following problems.
[0004]
At the time of cleaning, the outer blade holder is removed from the razor head, the inner blade is rotated and displaced 90 degrees around the drive shaft, and then the cleaning tool is mounted on the razor head. At this time, the exposed inner blade is rotated with the fingertip, and if the switch is accidentally turned on, it may be injured. Even in the cleaning state, since most of the inner blade is exposed, the inner blade that is reciprocally driven may be touched and injured. Since the shavings and sebum adhere to the inner blade before cleaning, there is a sanitary problem in operating the inner blade with a fingertip. Since the cleaning tool is attached to the razor head after the inner blade is pivoted, if the posture of the inner blade after rotation is inappropriate, the cleaning tool may not be attached to the razor head. There is also inconvenience that it takes time.
[0005]
An object of the present invention is to provide an electric razor equipped with a cleaning tool suitable for cleaning in a state where the inner blade is displaced in a direction intersecting with the driving direction during shaving. The object of the present invention is to rotate the cap provided with the brush so that the inner blade can be displaced from the normal position to the cleaning position. Therefore, when the inner blade is displaced, it is injured even if the switch is accidentally turned on. This is to ensure safety.
[0006]
Still another object of the present invention is that the cleaning tool cannot be removed from the razor head during the inner blade cleaning, and therefore, it is possible to reliably prevent the inner blade from being driven in a state of being exposed during the cleaning. It is to provide an electric razor with an excellent cleaning tool. Another object of the present invention is to perform cleaning more effectively by optimizing the contact state between the brush and the inner blade when the inner blade is displaced to the cleaning position with the cap.
[0007]
Another object of the present invention is to provide an electric shaver equipped with a water-washing cleaning tool that can clean an inner blade by a water washing action in addition to a scraping action by a brush. Still another object of the present invention is to provide an electric shaver that can prevent accidental touching of the inner blade during cleaning and improve safety during cleaning.
[0008]
[Means for Solving the Problems]
In the present invention, a cleaning tool G for cleaning the inner blade is detachably attached to the razor head 4 and reciprocally drives the inner blade 5 that is rotationally displaced in a direction crossing the driving direction of the vibrator 8. However, it is a reciprocating electric shaver that cleans the inner blade 5 with the brush 22 provided on the cleaning tool G. The cleaning tool G includes a cap 21 that is rotatably supported by the razor head, and a brush 22 provided on the cap 21. In the state where the cleaning tool G is mounted on the razor head 4, the inner blade 5 is covered with the cap 21. Displacement operation can be performed between a normal position and a cleaning position.
[0009]
The cleaning tool G includes a base frame 20 attached to the razor head 4, a cap 21 rotatably supported by the base frame 20, and a brush 22 provided on the inner surface of the cap 21. A locking mechanism is provided between the cleaning tool G and the razor head 4 to prevent the cleaning tool G from coming off the razor head 4 at the cleaning position.
[0010]
In a state where the cleaning tool G is mounted on the razor head 4, a regulating piece 32 for holding the inner blade 5 at the normal position in contact is provided on the cleaning tool G. Therefore, the shift | offset | difference of the rotation direction of the inner blade 5 and the brush 22 in a cleaning position is controlled. The peripheral wall of the cap 21 has a water opening 27 that allows the cleaning water to enter and exit.
[0011]
The cap 21 includes an arch wall 25 having a tunnel cross-section and end walls 26 that close both side ends of the arch wall 25, and covers the periphery of the inner blade 5 at the cleaning position with the cap 21 so as not to be contacted.
[0012]
[Operation and effect of the invention]
When the cleaning tool G is mounted on the razor head 4 and the cap 21 is rotated, the inner blade 5 is displaced along with the cap 21 and operated to a cleaning position that intersects the driving direction of the vibrator 8. Even if the switch is turned on halfway, there will be no injury.
[0013]
Since the cleaning tool G has a base frame 20 attached to the razor head 4 and a cap 21 rotatably supported by the base frame 20, the cap 21 can be rotated between the cap 21 and the base frame 20. Therefore, the structure of the razor head can be avoided from being specialized as compared with the case where the structure is provided on the razor head 4 side. Therefore, the cleaning tool G can also be applied to existing electric razors.
[0014]
According to the electric razor provided with the lock mechanism, the cleaning tool G can be prevented from coming out of the razor head 4 at the time of cleaning, and the inner blade 5 can be prevented from being driven while being exposed.
[0015]
【Example】
1 to 5 show an embodiment of an electric shaver according to the present invention. In FIG. 2, the electric razor has a main body 3 that houses the motor 1, the battery 2, and the like. A blade holder 7 is provided. The rotational power of the motor 1 is converted into reciprocating vibration through the vibrator 8 and then transmitted to the inner blade 5 through a drive shaft 9 protruding from the upper surface of the vibrator 8. The inner blade 5 is composed of a group of blades 5a arranged in parallel and a plastic base frame 5b for fixing and supporting the blade group. The base frame 5b is rotatably supported by a drive shaft 9, and further driven. It can slide up and down along the axis of the shaft 9. Reference numeral 10 denotes a spring that slidably biases the inner blade 5 toward the outer blade 6. In FIG. 2, a switch knob 11 for turning on and off a motor start switch is provided on the front side of the main body 3.
[0016]
The razor head 4 is formed in a similar cross-sectional shape that is slightly smaller than the laterally long rectangular cross-sectional shape of the main body 3, and the outer blade holder 7 is attached to the fitting portion 4 a in an outer fitting shape, and a pair of left and right locking claws 13. Thus, the engaging portion 7a of the outer blade holder 7 is retained. When the button 14 provided at the lower end of the lock claw 13 is pushed against the urging force of the spring 15, the engagement state between the lock claw 13 and the outer blade holder 7 is released, and the outer blade holder 7 is removed from the razor head 4. be able to.
[0017]
In order to perform the cleaning operation while moving the inner blade 5 in a state orthogonal to the left and right drive directions of the vibrator 8 and further driving the inner blade 5 in a reciprocating manner, a cleaning tool G dedicated for cleaning is provided. As shown in FIG. 3, the cleaning tool G includes a base frame 20 that is mounted on the razor head 4, a cap 21 that is rotatably supported by the base frame 20, and a brush 22 that is provided on the inner surface of the cap 21. Constitute.
[0018]
The base frame 20 is made of a plastic frame having a horizontally long cross-sectional shape with an open top and bottom surface, and is attached to the previous fitting portion 4a in an outer fitting shape. Engaging portions 23 that are the same as the outer blade holder 7 are provided on the inner surfaces of the left and right side walls of the base frame 20, and the mounting state can be maintained by engaging and holding the engaging portions 23 with the lock claws 13. A partially arcuate guide rib 24 is integrally formed at the center of the upper end of the front and rear walls of the base frame 20. The arc centers of these ribs 24 coincide with the rotation center of the inner blade 5, and the cap 21 is rotatably supported by these guide ribs 24. The upper end opening surface of the base frame 20 in a state of being mounted on the razor head 4 is positioned slightly above the upper end surface of the razor head 4.
[0019]
As shown in FIG. 3, the cap 21 is made of a plastic molded product having an arch wall 25 having a tunnel cross-section and a pair of end walls 26 that close both left and right ends of the arch wall 25. A group of water outlets 27 for washing is opened. In the center of the lower end of the front and rear walls of the cap 21, a partial arc-shaped turning rib 28 that is engaged with the previous guide rib 24 and guided to rotate is integrally provided. As shown in FIG. 4, the guide rib 24 and the turning rib 28 are vertically engaged with each other so that they cannot be detached from each other. The circumferential length of the front and rear turning ribs 28 is set to be larger than the circumferential length of the missing portion of the front and rear guide ribs 24. This is because the engagement state of both the ribs 24 and 28 is maintained even when the cap 21 is rotated and the longitudinal direction line thereof is orthogonal to the longitudinal direction line of the base frame 20.
[0020]
The brush 22 includes a brush base 30 and a group of brush bristles 31 planted on the lower surface thereof. The brush base 30 is fixed to the inner surface of the ceiling wall of the cap 21 and integrated with the cap 21. After the outer blade holder 7 is removed, the cleaning tool G is attached to the razor head 4 so that the lower ends of the group of brush bristles 31 enter between the blades 5a of the inner blade 5 at the normal position. The inner surface of the cap 21 in this state faces the inner blade 5 with a small gap. Therefore, when the cap 21 is twisted, the inner blade 5 is delayed by the amount of the previous gap, and rotates together with the cap 21. Therefore, even if the cap 21 is turned 90 degrees from the original position, the turning angle of the inner blade 5 does not reach 90 degrees.
[0021]
In order to solve the inconvenience as described above, in the state in which a regulating piece 32 for preventing slippage is provided on the inner surface of the cap 21 and the cleaning tool G is replaced with the outer blade holder 7 as shown in FIGS. The pieces 32 are in contact with the front and rear surfaces near the both ends of the inner blade 5. Each restricting piece 32 comprises a cantilevered elastic arm extending downward from the upper part of the inner surface of the cap 21, and the restricting piece 32 is also reciprocally deformed following the reciprocating drive of the inner blade 5 during cleaning.
[0022]
According to the cleaning tool G configured as described above, after removing the outer blade holder 7, the base frame 20 is attached to the fitting portion 4a of the razor head 4, and the cap 21 is rotated, whereby the inner blade 5 can be rotated together with the cap 21 and the longitudinal center line thereof can be displaced to the cleaning position so as to be orthogonal to the reciprocating drive direction of the vibrator 8. In this state, the bristles 31 are turned on by turning on the switch knob 11 while pouring running water through the water flow port 27 of the cap 21 or immersing the entire cap 21 in the accumulated water. The fluff, sebum, and the like attached to the blade body by the brush bristles 31 can be reliably cleaned and removed by the relative washing along the face wall of each of the blade bodies and the washing action of water.
[0023]
When the cleaning is finished, the cap 21 is returned to the original state, the inner blade 5 is returned to the normal position, and the button 14 of the lock claw 13 is pushed in to remove the entire cleaning tool G from the razor head 4. Thereafter, the water is cut off and the outer blade holder 7 is mounted on the razor head 4 again.
[0024]
As described above, during cleaning, the turning rib 28 is engaged with the front and rear guide ribs 24 so as to straddle the missing portion. On the other hand, the inner blade 5 is in a posture protruding from the front and rear surfaces of the razor head 4. Therefore, even if the button 14 is operated in this state and the engagement between the lock claw 13 and the engagement portion 23 is released, the base frame 20 is caught by the inner blade, and therefore the cleaning tool G is removed from the razor head 4. It cannot be removed.
[0025]
In the above embodiment, the cleaning tool G is configured by the base frame 20, the cap 21, and the brush 22, but this is not necessary. For example, as shown in FIGS. 6 and 7, guide ribs 24 are provided on the left and right of the upper end surface of the razor head 4, and after the cap 21 is put on the inner blade 5, the turning ribs 28 are engaged with the guide ribs 24. Then, the inner blade 5 may be rotated from the normal position to the cleaning position by rotating. Also in this embodiment, the razor head 4 cannot be removed unless the cap 21 is rotated to return the inner blade 5 to the normal position. That is, the guide rib 24 and the turning rib 28 in this embodiment also serve as a lock mechanism that prevents the cleaning tool G from coming off during cleaning.
[0026]
The inner blade 5 at the time of cleaning is driven to reciprocate in a direction orthogonal to the longitudinal center line of the cap 21. When the brush 22 is displaced in the direction opposite to the moving direction of the inner blade 5 using this reciprocating motion, the relative sliding stroke between the inner blade 5 and the brush 22 can be expanded. At this time, the reciprocating motion of the inner blade 5 is transmitted to the brush 22 through the lever, so that the direction of movement of the both 5 and 22 can be easily reversed. Moreover, the stroke can be expanded according to an appropriate lever ratio. The detailed structure will be described below.
[0027]
As shown in FIG. 8, four inverted L-shaped support arms 33 are integrally provided on the front and rear surfaces near the left and right ends of the brush base 30, and the fulcrum shaft 34 provided near the lower end of the support arm 33 is attached to the cap. It is pivotally supported on the left and right end walls 26 of the 21. As shown in FIG. 9, the arm portion below the fulcrum shaft 34 is in contact with the front and rear circumferential surfaces of the inner blade 5, serving also as the restriction piece 32 in the previous embodiment. The support arm 33 and the brush base 30 are connected via a thin hinge portion 35, and the entire brush 22 is floatingly supported via the four support arms 33.
[0028]
Therefore, for example, when the inner blade 5 is displaced in the direction of arrow R in FIG. 9, the support arm 33 on the side pressed by the inner blade 5 tilts in the S direction about the fulcrum shaft 34. In addition, the support arm 33 tilts with a larger stroke in the upper part than the fulcrum shaft 34 than in the lower part. Even when the inner blade 5 is displaced in the direction opposite to the arrow R, the support arm 33 can be similarly amplified and tilted in the opposite direction. As a result, the dust and sebum adhering to the inner blade 5 can be more effectively cleaned.
[0029]
In addition to the above embodiment, the cleaning tool G can be used as a cleaning tool when water washing is not used together. In this case, the water inlet 27 can be omitted. The base frame 20 does not need to be attached to the razor head 4 using the attachment structure of the outer blade holder 7, and a dedicated joint structure can be provided in the razor head 4. The present invention can also be applied to an electric razor having a plurality of inner blades 5. The inner blade at the time of cleaning is preferably orthogonal to the driving direction of the vibrator 8, but if necessary, cleaning can be performed in a non-orthogonal posture. The cross-sectional shape of the cap 21 can be a cross-sectional shape other than the tunnel cross-section, and the water inlet 27 may be opened on almost the entire peripheral surface.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a cleaning tool mounted on a razor head.
FIG. 2 is a front view of an electric razor in a state where an outer blade holder and a cleaning tool are separated.
FIG. 3 is an exploded perspective view of the cleaning tool.
FIG. 4 is a vertical side view of the cleaning tool during cleaning.
FIG. 5 is a cross-sectional view taken along line AA in FIG.
FIG. 6 is a longitudinal side view showing another embodiment of the cleaning tool.
7 is a cross-sectional view taken along line BB in FIG.
FIG. 8 is a longitudinal sectional front view showing still another embodiment of the cleaning tool.
FIG. 9 is a cross-sectional view of a state in which a cap is twisted.
[Explanation of symbols]
3 Main Body 4 Razor Head 4a Fitting 5 Inner Blade 8 Vibrator 20 Base Frame 21 Cap 22 Brush G Cleaning Tool

Claims (6)

A cleaning tool G for cleaning the inner blade is detachably attached to the razor head 4, and while the inner blade 5 rotated and displaced in a direction crossing the driving direction of the vibrator 8 is reciprocally driven, the cleaning tool A reciprocating electric shaver for cleaning the inner blade 5 with a brush 22 provided on G,
The cleaning tool G includes a cap 21 rotatably supported by the razor head 4 and a brush 22 provided on the cap 21.
A reciprocating electric shaver characterized in that the inner blade 5 can be displaced by a cap 21 between a normal position and a cleaning position in a state where the cleaning tool G is mounted on the razor head 4. 2. The cleaning tool G comprises a base frame 20 attached to the razor head 4, a cap 21 rotatably supported on the base frame 20, and a brush 22 provided on the inner surface of the cap 21. Reciprocating electric razor. The reciprocating type electric shaver according to claim 1 or 2, wherein a lock mechanism is provided between the cleaning tool G and the razor head 4 to prevent the cleaning tool G from coming off the razor head 4 at the cleaning position. In the state where the cleaning tool G is mounted on the razor head 4, the cleaning tool G is provided with a regulating piece 32 that holds the inner blade 5 in the normal position.
The reciprocating type electric shaver according to claim 1, 2 or 3, wherein the displacement between the inner blade 5 and the brush 22 in the rotation position at the cleaning position can be regulated. The reciprocating type electric shaver according to claim 1, 2, 3, or 4, wherein a water inlet 27 for allowing the washing water to enter and exit from the peripheral wall of the cap 21. The cap 21 includes an arch wall 25 having a tunnel cross-section, and end walls 26 that block both side ends of the arch wall 25;
The reciprocating electric shaver according to claim 1, 2, 3, 4 or 5, wherein the periphery of the inner blade 5 at the cleaning position is covered with a cap 21 so as not to be contacted.

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