JPS6110620Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an outer blade attachment device for an electric shaver.

Conventionally, the structure for attaching the outer cutter body to the outer cutter case was to form a groove on the inner surface of the outer cutter case into which the outer cutter attachment plate of the outer cutter body is fitted, or to provide a protrusion on a part of the outer cutter case. It is sometimes formed into a stopper. As a result, undercuts occur in the outer cutter case molded from plastic, and a slide mold must be used as the mold, resulting in high processing costs and an extremely complex mold structure. has.

This idea was developed in view of these points, and it is an electric razor outer case in which the outer cutter case is easy to mold and the outer cutter body can be easily held movably by using a decorative frame. The purpose is to obtain a blade mounting device.

This idea involves integrally forming a protrusion on the decorative frame when attaching the decorative frame to the outer cutter case, and by making this protrusion protrude into the inside of the outer cutter case, it becomes a protrusion that prevents the outer cutter body from falling. The case can be molded using a conventional two-piece mold, and is designed to be easily molded.

An embodiment of this invention will be described based on the drawings. First, an outer cutter case body 2 is attached to the upper part of the main body case 1 so that it can be attached and detached by engagement claws 3 and 4. An inner cutter body 5 is provided at the upper part of the main body case 1 so as to be reciprocated by a drive section (not shown). Further, the outer cutter case body 2 is an outer cutter case 6 made of plastic.
The outer cutter case 6 has a downward opening except for the engaging claw 3, and an opening 7 for exposing an outer cutter, which will be described later, is formed in the upper part. A stepped portion 8 is formed at the upper side of both inner side edges, and a hole 9 is formed at the lower side. The surface on which the hole 9 is formed is an inclined surface 10 whose central portion protrudes inward.

Next, a concave fitting part 11 is formed at both ends of the outer cutter case 6, excluding the lower part, and is concave in an angular shape over the entire circumference. The formed horseshoe-shaped decorative frame 12 is fitted and fixed with adhesive. This decorative frame 12 has the holes 9
Furthermore, a protrusion 14 is formed which fits into a hole 13 formed in the upper part, thereby increasing the stability of the decorative frame 12. Furthermore, the protrusion 14 that fits into the hole 9 is formed to be slightly longer and slightly protrudes from the inclined surface 10 to serve as a fall prevention protrusion 15.

Next, an outer cutter body 16 is attached to the outer cutter case 6 to form an outer cutter case body 2. The outer cutter body 16 consists of a thin outer cutter 17 formed by means such as vacuum deposition, and outer cutter mounting plates 18 made of plastic fixed to both side edges of the outer cutter 17. Both ends of the outer blade mounting plate 18 have a protrusion 19 in the center and a hole 21 with elastic thin-walled portions 20 on both sides. Stoppers 22 are formed at regular intervals. In addition, the outer blade mounting plate 1
8 has a large number of projections 23 integrally molded therein, and these projections 23 are fitted into the outer cutter 17 and then welded to integrate them.

The outer cutter cover 24 is made of plastic and has a V-shape, and has a locking mechanism that engages and disengages the engagement ridges 25 formed on both ends of the outer cutter case 6. A claw 26 is formed.

In such a configuration, the outer cutter body 16 is formed by fitting and welding the protrusions 23 of the outer cutter attachment plate 18 to both side edges of the outer cutter 17. On the other hand, the decorative frame 12 is adhesively fixed to the outer cutter case 6, and at this time, the protrusion 14 protrudes from the inclined surface 10 to form a fall prevention protrusion 15. The attachment of the outer cutter body 16 to the outer cutter case body 2 thus formed is carried out in the order shown in FIGS. 5a and 5b. First, the outer cutter body 16 is tilted as shown in FIG.
be joined to. At this time, the outer cutter mounting plate 18 is guided outward on the inner surface of the outer cutter case 6 due to the inclination of the inclined surface 10, so that its passing position is clearly determined. Next, as shown in FIG. 5b, it must be moved over the fall prevention protrusion 15 that protrudes inward, but at this time, the thin part 20 is deformed and the stopper 22 is deformed as shown in an enlarged view on the side.
and the protrusion 19 come into contact with each other, thereby reducing the substantial length of the outer cutter attachment plate 18. As a result, the hole 21 returns to its original state by climbing over one of the fall prevention protrusions 15, and then the other hole 21 is deformed to allow the hole 21 to ride over the fall prevention protrusion 15. When the outer cutter body 16 is pushed up in this manner, both ends of the outer cutter mounting plate 18 come into contact with the stepped portion 8 and are positioned, as shown in FIG. 5c. At this time, the protrusions 19 at both ends of the outer cutter mounting plate 18 are pressed to some extent, thereby providing elastic support without movement in the longitudinal direction. Therefore, even when the outer cutter case body 2 is fitted into the main body case 1 and used, and is driven, no vibration noise is generated in the outer cutter case body 2 portion. Further, even if the outer cutter case body 2 is removed for the purpose of removing hair shavings or the like, the outer cutter body 16 will not fall because of the presence of the fall prevention protrusion 15. Moreover, this fall prevention protrusion 1
5 is not formed by molding, so it is extremely easy to manufacture.

As mentioned above, this idea increases the decorative effect by attaching a decorative frame to the side edge of the outer blade case, and also protrudes inward by integrally forming a protrusion on this decorative frame and penetrating the outer blade case. Because of the drop-prevention protrusion, when forming the outer cutter case, it is only necessary to form a step inside the outer cutter case. Therefore, it can be formed with a simple split mold, and the structure of the mold is extremely simple. In addition, even if an external force is applied to the outer cutter during use, the outer cutter moves inward together with the inner cutter, which prevents the outer cutter from being abnormally deformed. It has the effect of being safe and not causing any damage.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a perspective view, Figure 2 is an exploded perspective view, Figure 3 is an exploded perspective view of the outer cutter case body, Figure 4 is a perspective view of the outer blade mounting plate, and Figures 5a, b, and c are partial views. FIG. 6 is a longitudinal sectional front view showing the assembly order of the outer cutter case portion with an enlarged partial view added. 6... Outer blade case, 8... Stepped portion, 12... Decorative frame, 14... Protrusion, 15... Fall prevention protrusion, 16
...Outer blade body, 18...Outer blade mounting plate.

Claims (1)

[Scope of utility model registration request] A decorative frame is attached to the side end of the outer cutter case, and an outer cutter mounting plate of the outer cutter body is movably attached to the inner surface of the outer cutter case, and a stepped portion is provided that contacts the outer cutter mounting plate to position it. The outer blade of an electric shaver is characterized in that the decorative frame is provided with a protrusion that penetrates the outer cutter case and projects to the inner surface thereof, and the protrusion formed by the protrusion serves as a fall prevention protrusion of the outer cutter body. Mounting device.