JPS62213788A - Outer blade mount apparatus of electric razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electric shaver, particularly a reciprocating electric shaver, and relates to a mechanism for engaging and disengaging an outer cutter from an outer cutter frame thereof.

(b) Conventional technology The conventional outer cutter is, for example, "
An outer cutter plate in which a large number of cutting holes are formed in a thin metal plate like the outer cutter of a reciprocating electric shaver, and an outer cutter base on which the outer cutter plate is supported in a U-shaped curved state. It consists of
A pair of locking square holes are formed at each end of the outer cutter plate, and a locking protrusion for supporting the locking square holes is formed on the inner surface of the outer cutter base.

(c) Problems that the invention aims to solve In the conventional technology, firstly, the metal outer cutter plate and the metal outer cutter base are in direct contact, and the square holes in the outer cutter plate are very large. Easy to wear out. Also, when engaging the square hole and the protrusion,
The outer cutter plate is bent inward once, and then returned after the outer cutter plate passes the protrusion and reaches a position where the square hole faces the protrusion, so unnecessary bending of the outer cutter plate may occur. There is a problem that this occurs and the area is quickly worn away by the inner cutter.

In view of the problems of the prior art described above, the problem to be solved by the present invention is to enable the outer cutter to be reliably and easily engaged with and disengaged from the outer cutter frame without curving the outer cutter into a shape other than an arch.

2) Means for solving the problem An aluminum die-cast outer cutter frame having an opening on the top surface,
A nickel outer cutter curved into an arch shape and engaged with the opening of the outer cutter frame, an engagement groove formed on a longitudinally opposing inner wall of the outer cutter frame, and an engagement groove overflowing in the longitudinal direction of the outer cutter. an outer cutter engagement/disengagement mechanism comprising an engagement end of an outer cutter fixing frame attached to the engagement groove; and an outer cutter engagement/disengagement button that prevents the engagement end engaged in the engagement groove from coming off at that position. It consists of:

(E) Function The outer cutter engagement/disengagement button is provided in the center and is swingable via a nine-pivot support shaft, and the engagement end portion at the top engages with the engagement groove by the swinging. A support shoulder portion is formed close to and spaced from the outer cutter frame, and an operation button portion is formed at the lower portion to urge the knob to protrude to the outside of the outer cutter frame.

When the operating knob is pushed inward, the support shoulder is positioned apart from the engagement end, and the engagement end can be removed from the engagement groove, and in this state, the outer cutter is removed from the outer cutter frame.

When installing the outer cutter, it overflows the opposing inner wall of the outer cutter frame and when the outer cutter is inserted, the support shoulder is pushed by the engagement end and bends.

At the stage when the engaging end fits into the engaging groove, the support shoulder returns to hold the engaging end within the engaging groove.

(f) Example Hereinafter, the present invention will be described with reference to the drawings regarding an example of a reciprocating electric shaver shown in FIGS. Note that the main body of the electric shaver is not related to the gist of the present invention, so detailed description and disclosure of drawings will be omitted.

(1) is an aluminum die-cast outer cutter frame, which has an opening (2) in the upper part, and an engagement groove (1) which is one step thinner than the inner wall (3) in the longitudinally opposite inner wall (3). 4) is formed. (5) is an outer blade made of electroformed nickel which is curved into an arch shape and is installed in the opening (2), and has a number of small holes (not shown) for introducing whiskers. (6) is an outer cutter fixing frame which is attached by molding over the lower edge of the arch-shaped outer cutter (5), and the edge portion thereof is engaged with and disengaged from the engagement groove (4). The engagement end (61) extends from the side edge of the outer cutter (5).

(7) and (8) are an outer cutter engagement/disengagement button and its fixing member located opposite to each other with the inner side M(3) and the outer surface of the outer cutter frame (1) in between. The outer blade engagement/disengagement button (8) has a pair of legs (72) and (73) formed by cutting out the central part of a synthetic resin flat plate (71) in an E-shape, and horizontally on both upper sides. The supporting shoulder (74) of the engaging end (61) is formed to bulge out.
), a tongue piece (75) extending upwardly between the support shoulder (74) and fitting into the recess (41) formed in the engagement groove (4); (72) A pivot shaft (76) formed horizontally on the side surface of (73) and the flat plate (7
1) A button part (
77). One of the fixing members (8) is also made of synthetic resin, and has a cylindrical boss (81) fitted into a circular hole C11l formed in the side wall of the outer cutter frame (1).
, a horizontal groove (82) formed approximately in the center, and the legs (72) (73) arranged side by side along the horizontal groove (82).
) and a handle member (85) (86) having a hole (83) (84) that fits into the pivot shaft (76) of the handle member (85) (86), and a non-slip portion (87) provided on the zero surface. And the handle member (
85) (86) and the pivot shaft (76) are the outer cutter frame (1).
A rectangular opening a? formed below the engagement groove (4). Connected via J.

Further, the button portion (77) of the outer cutter engagement/disengagement button (7) projects outward through a notch α3 provided below the side wall of the outer cutter frame (1).

In the outer blade attachment device for a reciprocating electric shaver having the above configuration, as shown in Fig. 2 and the third factor, when the outer blade (5) is properly attached to the outer cutter frame (1), The engagement/disengagement button (7) does not undergo any deformation, and its tongue (75) is inserted into the recess (4vKf & end (4vKf) of the engagement groove (4) of the outer cutter frame (1).
61) is fitted into the engagement groove (4) of the outer cutter frame (1), and is prevented from coming off downward by the support shoulder (74) of the outer cutter engagement/disengagement button (7).

To remove the outer cutter (5) fixed in this state from the outer cutter frame (1), push the button part (77) of the outer cutter engagement/disengagement button (7) inward (indicated by an arrow x). Then, the engage/disengage button (
77) rotates as a support shaft (76) e axis, and its supporting shoulder (
74) separates from the engagement end (61) of the outer cutter (5).

In this way, move the outer blade (5) vertically downward (indicated by arrow Y).
By sliding the outer cutter (5) to the outer cutter frame (1), the outer cutter (5) can be removed from the outer cutter frame (1) (see Fig. 4).

(G) Effects of the Invention As described above, the present invention comprises an outer cutter frame having an opening on the upper surface, an outer cutter curved in an arch shape and engaged with the opening of the outer cutter frame, and the outer cutter frame having an opening. an outer blade engagement/disengagement mechanism comprising an engagement groove formed in a longitudinally opposing inner wall and an engagement end of an outer blade fixing frame attached along the longitudinal direction of the outer blade; It consists of an outer cutter engaging/disengaging button that prevents the engagement end from coming off in that position, so the outer cutter can be attached to the outer cutter frame without causing undue deformation to the outer cutter when detaching, and the outer cutter can be removed easily. While the outer blade is attached to the outer blade frame, even if a downward force is applied to the outer blade when shaving, the outer blade engagement/disengagement button can prevent the outer blade from moving in the removal direction. This also has the effect of ensuring secure fixation to the blade frame.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view (partially shown) of the main parts of the outer blade attachment device of the electric shaver of the present invention, Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1 in the state where the outer blade is attached, and Fig. 3 is Similarly, the I-1 sectional view of Fig. 1 shows the outer cutter attached, Fig. 4 is a sectional view corresponding to Fig. 3 when the outer cutter is detached, and Fig. 5 shows the outer cutter with the outer cutter attached. FIG. 3 is a schematic perspective view of the frame. (2)...Opening, (1)...Outer cutter frame, (5)...
Outer blade, (3)...inner wall. (4)...Engagement groove, (6)...Outer blade fixing frame, (61
)...Engagement end, (7)...Outer blade engagement/disengagement button, (7
6)...Pivot shaft, (74)...Support shoulder, (77)
...Operation button section.

Claims (2)

[Claims] (1) An outer cutter frame having an opening on the upper surface, an outer cutter that is curved in an arch shape and engaged with the opening of the outer cutter frame, and an engagement groove formed in a longitudinally opposing inner wall of the outer cutter frame. and an engaging end of the outer blade fixing frame attached along the longitudinal direction of the outer blade, and an engaging end that is engaged with the engaging groove at that position. An electric shaver outer blade attachment device consisting of an outer blade engagement/disengagement button that prevents the outer blade from coming off. (2) The outer cutter engagement/disengagement button is swingable via a pivot shaft provided in the center, and the engagement end portion that engages the engagement groove by the swinging is attached to the upper part. The electric shaver according to claim 1, wherein the electric shaver is formed with supporting shoulders which are close to each other and which are spaced apart from each other, and an operating button portion is formed in the lower part of the electric shaver to urge the knob to protrude to the outside of the outer cutter frame. Outer blade attachment device.