JPH05317539A - Electric razor with protective cap - Google Patents

Abstract

PURPOSE:To display a service life of a blade by a simple constitution, and also, at a low cost by utilizing a protective cap. CONSTITUTION:In a protective cap 2 fitted to an electric razor main body 5 so as to cover it, a space part 21 having an air hole 20 is provided. In the inside of this space part 21, a sublimate material 4 is contained. On the wall surface facing the outside for closing the space part 21, a transparent plate 22 is fitted and attached. By adjusting the quantity of the sublimate material 4 by allowing it to correspond to a service life of a blade, a change time which becomes the service life of the blade is known by looking at the decrease quantity of the sublimate material 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective cap for an electric shaver with a protective cap.

[0002]

2. Description of the Related Art Conventionally, in this type of electric shaver, as a blade life display method for notifying the blade replacement time, a main body display section A is provided as shown in FIGS. The number of times the blade is turned on and off is counted and stored in an electronic circuit (not shown) built into the electric razor body 5, and when the life of the blade is reached, the body display section A is notified of the blade replacement time. It is designed to display. 2 is a protective cap.

[0003]

However, in the conventional method of displaying the life of the blade by using an electronic circuit or the like, it is necessary to provide a sensor section for counting the number of times the blade has been used and the electronic circuit, the display section A, etc. This allows the electric razor body 5
However, there is a problem that the structure is complicated and the cost is increased.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to use a protective cap to display the blade life with a simple structure and at low cost. To provide an electric razor with a protective cap.

[0005]

In the electric shaver with a protective cap of the present invention, a space portion 21 having a ventilation hole 20 is provided in a protection cap 2 which detachably covers the outer blade 12, and sublimation is performed inside the space portion 21. The transparent material has a transparent wall surface that closes the space 21 while accommodating the permeable material 4. By adopting such a configuration, the problems of the conventional example described above are solved. The object of the present invention is achieved.

The sublimable material 4 has an inner core portion 4a.
And the outer core portion 4b, and each portion may have a different color.

[0007]

Thus, the protective cap 2 fitted to the electric razor body 5 to protect the outer blade 12 is provided with the space 21 having the ventilation hole 20, and the sublimable material 4 accommodated in the space 21 is provided. Although it is visible from the outside through the transparent wall surface, in this case, the amount of sublimable material 4 is reduced by adjusting the amount of sublimable material 4 and the life of the blade in correspondence with each other. You can know when to replace the blade to reach its end of life.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. As a first embodiment of the present invention, FIGS. 2 and 3 show a front view and a side view of a state in which the protective cap 2 is fitted on the electric razor body 5 of the plurality of heads 1, and the inside of the protective cap 2 is shown. The sublimable material 4 (FIG. 1) is stored in the formed space portion 21, and the transparent plate 22 is fitted to the wall surface that closes the space portion 21.

The protection cap 2 is shown in FIGS. 4 (a) and 4 (b).
As shown in FIG. 3, it is composed of an upper cap 2a and a lower cover 2b. The upper cap 2a has a substantially arcuate cross section, and the transparent plate 22 is fitted on the top thereof. The transparent plate 22 is made of a light-transmissive material such as polycarbonate or acrylic, and the amount of the sublimable material 4 can be seen from the outside so that the replacement time of the blade can be easily known. Further, a plurality of vertically elongated slit-shaped ventilation holes 20 for drying are formed on both side surfaces of the upper cap 2a, and a pair of projecting hook portions 6 are provided inwardly on both inner surfaces thereof so as to face inward. .. On the other hand, the lower cover 2b has an opening hole 24 in the top recess 23, and a slit-shaped ventilation hole 20 'is formed on both side surfaces of the lower cover 2b so as to face the ventilation hole 20 of the upper cap 2a. A breathable sheet 8 such as a mesh-like polyester sheet is attached to the lower cover 2b so as to cover the pores 25 from above. The valley 3 between the heads 1 is provided in the lower cover 2b to which the breathable sheet 8 is attached.
Granular sublimable material 4 is filled in a position corresponding to (see FIG. 3).

Further, the breathable sheet 8 such as the mesh-like polyester sheet is a sheet that allows only gas to pass through well and does not allow the solid content of the sublimable material 4 to pass, and the granular sublimable material 4 is Even if it becomes smaller due to sublimation, it does not fall from the opening hole 24 of the lower cover 2b. According to the above configuration, the granular sublimable material 4 housed in the space 21 of the valley 3 between the heads 1 of the protective cap 2 gradually sublimes from the solid surface as time passes, and becomes a gas state. , The amount of which gradually decreases, but this space 2
The way in which the sublimable material 4 in 1 is reduced can be visually confirmed from the outside through the transparent plate 22 of the upper cap 2a. At this time, as shown in FIG. 5, with the protective cap 2 in an upright state, it is checked whether the amount of the sublimable material 4 is less than the mark A marked on the transparent plate 22, and the blade is replaced. You can determine at a glance whether it is time for you. Therefore, it is only necessary to adjust the amount of the sublimable material 4 in accordance with the life of the blade, and the structure is simpler than the conventional display method using an electronic circuit or the like, and the cost can be reduced.

In this embodiment, the upper cap 2a is also used.
Since the ventilation holes 20 for drying provided on both side surfaces of the are formed in a vertically elongated slit shape, the aperture ratio can be increased as compared with, for example, a case of being formed in a circular shape, and moreover than a case of forming the slit in a horizontally elongated shape. Also, the holding force for setting the protective cap 2 on the outer cassette can be increased. That is, since the ventilation hole 20 has a vertically long slit shape, there is an advantage that a large bending moment from the holding portion can be secured and the holding force that is reduced due to the slit can be minimized.

Further, in FIG. 1B, when the inner blade 31 and the inner blade base 32 are coated with a thin film of copper, silver or the like (PVD method or the like) to generate copper ions or silver ions. It is possible to further suppress the growth of bacteria. The second embodiment of the present invention is shown in FIGS.
Shown in. In this embodiment, the sublimable material 4 has two layers of an inner core portion 4a and an outer core portion 4b, and the respective portions 4a and 4b are set to have different colors. In this case, the outer core portion 4b disappears and the inner core portion 4a is exposed to cause a color change, and the total amount also decreases. Therefore, the outer core portion 4b is adjusted so that the disappearance time of the outer core portion 4b coincides with the life of the blade.
By simply adjusting the amount of b, it is possible to more easily know the replacement time, which is the life of the blade, by seeing the change in color and the decrease in amount. By the way, when the shape and the spherical diameter of the sublimable material vary, the surface area of the sublimation amount of the material changes and the sublimation amount largely changes. In the present embodiment, as shown in FIG. Since the material 4 is formed in a spherical and substantially uniform sphere diameter, the sphere diameter is reduced substantially uniformly by sublimation of the material. Therefore, it is possible to reduce the variation in the amount of change in reduction due to sublimation, and accordingly, the transparent plate 22 of the protective cap 2
It is possible to prevent variations in the display as seen from above. Note that FIG.
In (a), it is necessary to sublimate the outer core portion 4b.
The inner core portion 4a may be a material that does not sublime such as sucrose and corn starch.

As a third embodiment of the present invention, in addition to the sublimation material for displaying the life of the blade, sublimation materials for deodorization such as antibacterial agents, deodorants, aromatics, etc. are mixed to form a space. You may make it store in 21. In this case, as the sublimable material for displaying the life, a material having a small change in the amount of sublimation with respect to a change in temperature and hardly affected by temperature, for example, naphthalene or thymol is used. As a result, there is no great difference in the amount of sublimation even in areas where the annual average temperature is different, and the blade replacement time does not change significantly depending on the area. On the other hand, the sublimable material for deodorization is a material in which the sublimation amount changes greatly when the temperature is high, particularly in the range of 20 ° C to 40 ° C, that is, in an environment where the growth of bacteria is active. To use. For example, antibacterial and deodorant agents include benzoic acid, salicylic acid, isopropylphenol, dehydroacetic acid, etc., and aromatic agents, such as vegetable essential oils and fragrances, sublimate from a granular solid surface by sustained release and are in a gaseous state. Use the following. This deodorant sublimable material suppresses bacterial growth in the head 1 of the electric razor, and further promotes antibacterial and disinfection in the head 1 by sustained release of antibacterial agents and aromatic agents.
The deodorizing effect is enhanced to prevent an unpleasant odor from the blade of the electric razor.

As a fourth embodiment of the present invention, the color and shape of the sublimable material for displaying the life of the blade and the sublimable material for deodorization may be different. In this case, there is an advantage that the life display of the blade can be visually recognized more easily.
Here, as the sublimable material for displaying the life of the blade, a material having a large sublimation property, that is, a material having a large amount of sublimation per unit time may be used. In this case, the storage amount of the sublimable material for displaying the life of the blade can be increased, the decrease change due to the sublimation of the sublimable material can be increased, and the decrease can be easily understood. The color and shape of the sublimable material are formed by granulation. On the other hand, as a sublimable material for deodorization,
You may make it use the material which has the minimum sublimation property which can satisfy a deodorizing effect. In this case, the storage amount of the sublimable material for deodorization can be minimized, and the decrease change of the sublimable material for displaying the life of the blade can be displayed more easily. Further, the sublimable material itself for displaying the life of the blade may be composed of a deodorant sublimable material having various functions such as antibacterial, deodorant and aroma. In this case, if the sublimable material for deodorization has the maximum sublimability that can satisfy the deodorization effect, the storage amount of the entire sublimable material can be increased, and the decrease change of the material can be increased to make it easier to understand. It can be a display.

As a fifth embodiment of the present invention, the function of matching the start of sublimation of the sublimable material with the use start time of the electric shaver will be described. The sublimable material is sublimated before the electric shaver is used. Don't If sublimated, it will not be able to function as a blade life indicator. Therefore,
Before using the electric razor, pack only the protective cap or the protective cap with a blade in a sealed state, and reduce the amount of sublimation loss from the initial amount to the beginning before use. For example, the saturated vapor pressure can be reduced by hermetically packing at atmospheric pressure or a low pressure lower than atmospheric pressure. Further, by storing at a low temperature, the saturated vapor pressure can be further reduced, variation in the amount of reduction of the sublimable material can be eliminated, and variation in life display can be reduced.

The present invention is not limited to the protective cap fitted to the electric razor having a plurality of heads as in the above embodiment, but is widely applied to the protective cap fitted to various electric razor bodies. It can be applied.

[0017]

According to the present invention, as described above, in the electric shaver with a protective cap which detachably covers the outer blade with the protective cap, the protective cap is provided with a space portion having a vent hole, and this space portion is provided. Since the sublimable material is housed inside and the wall surface facing the outside that closes the space is made transparent, simply adjust the amount of sublimable material to correspond to the life of the blade. The life of the blade can be indicated by an inexpensive method with a simpler structure than the conventional display method using an electronic circuit or the like.

When the sublimable material has two layers, an inner core portion and an outer core portion, and each portion has a different color, the outer core portion disappears and the inner core portion is exposed, so that the color is changed. Changes appear. Therefore, if the amount of the outer core portion is adjusted in correspondence with the life of the blade, it is possible to more reliably notify the replacement time when the life of the blade is reached by observing the color change.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (a) of FIG.
A line sectional view, (b) is a BB line sectional view in FIG.

FIG. 2 is a partially cutaway front view of a portion fitted to the protective cap and the electric razor body of the above.

FIG. 3 is a partial side view of a portion of the electric razor body fitted with the above protective cap.

4A and 4B show the same protective cap, FIG. 4A is a perspective view of an upper cap, and FIG. 4B is a perspective view of a lower cover.

FIG. 5 is an operation explanatory view for visually checking the amount of sublimable material reduced with the protection cap being set up.

FIG. 6 is a cross-sectional view showing a sublimable material used in another embodiment of the present invention, in which (a) is a state before the outer core portion is in a state of being sublimated;
(B) is a sectional view showing a state after sublimation of the outer core portion.

FIG. 7 shows a conventional electric shaver, (a) is a side view,
(B) is a front view.

[Explanation of symbols]

 2 Protective cap 4 Sublimable material 4a Inner core part 4b Outer core part 12 Outer blade 20 Vent hole 21 Space part 22 Transparent plate

Claims (2)

[Claims] 1. An electric razor with a protective cap that detachably covers an outer blade with a protective cap, wherein a space portion having a ventilation hole is provided in the protective cap, and a sublimable material is housed in the space portion. An electric razor with a protective cap, characterized in that the wall surface facing the outside that blocks the space is made transparent. 2. The electric shaver with a protective cap according to claim 1, wherein the sublimable material comprises two layers of an inner core part and an outer core part, and each part has a different color.