JPS5818839Y2 - reciprocating electric razor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a reciprocating electric shaver, and its purpose is to eliminate the possibility of the movable blade coming off the movable blade guide pin.

In this type of razor, an elongated hole is formed in the movable blade that slides on the lower surface of the fixed blade in response to the spring force of a coil spring, and a guide pin hanging vertically from the fixed blade side is inserted into this elongated hole. , which guides the sliding movement of the movable blade.

However, if hair particles accumulate between the fixed blade and the movable blade and do not fall, the movable blade may rise against the force of the spring, causing abnormal movement and coming off the guide pin. be.

Moreover, once the movable blade comes off, the spring must be pushed down and fitted into the guide pin, and adjusting the contact with the fixed blade requires skill, so it is necessary to ensure that it does not fall off. No.

This invention eliminates the above-mentioned drawbacks, and examples will be explained below with reference to the drawings.

FIG. 1 is an exploded perspective view showing the sharpening mechanism of the reciprocating electric shaver according to this invention. In the figure, 1 is a case, 2 is a blade holder attached to the case 1, and 3 is a decorative plate 4. It is also a fixed blade held by a pair of holding pieces 5, 5 of the holder 2, and has a comb blade part 6 for edge cutting.

Reference numeral 7 denotes a movable blade having a comb blade part 8 corresponding to the comb blade part 6, which is superimposed and fixed on the upper surface of a push-up plate 10 which is biased by the spring force of a coil spring 9, and is pressed into contact with the lower surface of the fixed blade 3. has been done.

11 is a protrusion formed on the side surface of the push-up plate 10;
By connecting this protrusion 11 to a connecting piece 13 shaped like a movable body 12 forming a part of a finishing shaving mechanism (not shown), the movable blade 7 is vibrated in the direction of arrow a. (Figure 2).

Reference numeral 14.14 denotes a guide pin drilled on the lower surface of the decorative board 4 along the vibration direction a of the movable blade 7, and corresponds to the guide pin 14.14 of the fixed blade 3 held below the decorative board 4. The fixed blade 3 is
Further, the tips of these guide pins 14, 14 are communicated with the elongated holes 16, 16 formed in the movable blade 7 and the elongated holes 16, 16 in the push-up plate 10, respectively. The movable blade 7 is fitted into elongated holes 17, 17 formed as shown in FIG.

Reference numeral 18 denotes a rib formed on at least one of the case 1 side and the movable blade 7 side, for example, the blade holder 2. The rib 118 is used to adjust the gap between the movable blade 7 side and the case 1 side. As shown in FIG. 3, the gap G between the top surface 18a of the rib 18 and the movable blade 7 side, that is, the lower surface of the press plate 10, is larger than the insertion amount H of the guide pin 14 into the movable blade 7 side. The height dimension is set to be small.

Reference numeral 19 denotes a mounting piece formed on the holder 2 to lock the holder 2 in the engagement hole 20 of the case 1.

In the above configuration, when the movable blade 7 vibrates, hair debris accumulates between the movable blade 7 and the fixed blade 3, and the movable blade 7 moves downward together with the push-up plate 10, and the guide pin 14 tends to come off from the elongated hole 16. Also, since the rib 18 is provided, the movable blade 6 comes into contact with the top surface 18a of the rib 18 before the displacement exceeds the insertion amount H of the guide pin 14, and therefore the guide pin 14 The guiding effect can be properly maintained.

In the above embodiment, the rib 18 is provided opposite the guide pin 14, but it is not necessary to limit it to this position.

Furthermore, since the movable blade 7 is in sliding contact with the individual fixed blade 3 in the front-back direction perpendicular to the reciprocating direction, the floating of this sliding contact portion of the movable blade 7 tends to be noticeable in the front-back direction. Although the rib 18 is provided along this front-rear direction, it may be divided in the front or rear to form two contact protrusions.
Furthermore, if the width of the movable blade 7 in the front-rear direction is narrow, it goes without saying that the ribs 18 may be provided to protrude in the reciprocating direction.

Further, in the above embodiment, the rib 18 is provided on the case 1 side, but the rib 18 is provided on the movable blade 7 side, for example, from the lower surface side of the push-up plate 10 downwardly protruding toward the case 1 side, or the rib 18 is provided on the case 1 side and the movable blade side. They may be provided so as to protrude so that both sides of the 7 side abut against each other.

As described above, in this invention, by providing local ribs, it is possible to prevent the movable blade from separating from the guide pin for regulating the reciprocating motion. There is no need to make the guide pins longer than necessary due to the ribs, and therefore it is easy to attach the movable blade during assembly. There are advantages such as becoming

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a reciprocating electric razor sharpening mechanism according to this invention, FIG. 2 is a cross-sectional view showing the assembled state, and FIG. 3 is an explanatory view of the main parts. 1...Case, 3...Fixed blade, 7...
...Movable blade, 14...Guide pin, 18.
...Rib, G...Gap, H...
Inset amount.

Claims (1)

[Scope of utility model registration request] In a reciprocating electric shaver in which a movable blade 7 is in sliding contact with the lower surface of the fixed blade 3 and a guide pin 14 is drilled to guide the sliding movement of the movable blade 7 from the fixed blade 3 side to the movable blade 7 side, the movable blade The insertion amount H of the guide pin 14 inserted into 7
A reciprocating electric motor is provided with a rib 18 for gap adjustment protruding from at least one of the case 1 side and the movable blade 7 side 1 (7) to set the gap G between the movable blade 7 side and the case 1 side smaller than the above. Razor.