JPH0520290Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a reciprocating electric shaver, and relates to a structure for attaching the outer cutter to the outer cutter frame.

(b) Prior art For example, as shown in Japanese Utility Model Application Publication No. 55-146061, the outer blade of a conventional reciprocating electric shaver is connected to U-shaped legs at both ends of a mounting plate made of synthetic resin via elastic arms. Both ends of the outer cutter are attached to the support plates provided with the outer cutter, and the outer cutter is curved into an arch shape and inserted from below the outer cutter frame, and the U-shaped legs are attached to the lower ends of both side walls of the outer cutter frame. In this structure, the mounting plates are fitted and fixed to the outer surfaces of the both side walls. In this example, in order to fit and fix the mounting plate to the lower ends of both side walls of the outer cutter frame, it is necessary to provide a stepped part for fitting on the lower ends of both side walls of the outer cutter frame, and the thickness of the outer cutter frame itself increases. However, there is a problem in that the cost of materials increases.

(c) Problems to be solved by the invention The problems to be solved by the invention are to provide an improved method that facilitates the operation of attaching and detaching the outer cutter from the outer cutter frame and does not increase material costs or manufacturing costs. An object of the present invention is to provide an outer blade attachment device.

(d) Means for solving the problem: An outer blade that is removably mounted and engaged with the upper part of the main body case and that is removably engaged with an outer blade that has a number of hair introduction holes. Outer cutter fixing plates are fixed to both sides in the longitudinal direction of the frame, and elastic engagement parts formed at the ends thereof are engaged with engagement receiving parts of the outer cutter frame, and the outer cutter fixing plates are attached to the outer cutter fixing plates. A knob is formed that protrudes outside the outer cutter frame from the lower opening of the cutter frame.

(E) Function The knob is held between the main body case and the outer cutter frame, and the outer cutter is removed from the outer cutter frame via the knob when the outer cutter frame is removed from the main body case.

(F) Embodiment The outer blade mounting device of the present invention will be described in detail below with reference to an embodiment of the drawings.

In the front view of the reciprocating electric shaver shown in FIG. 2, reference numeral 1 denotes a main body case made of synthetic resin, and a large starting switch knob 2 is provided on the front so as to be slidable in the vertical direction. A sharp blade operating knob 3 is also provided next to the handle so as to be slidable in the vertical direction. Reference numeral 4 denotes a sharp blade, which is located at the upper part of the main body case 1, and has a protruding position where its cutting edge 4a is separated from the main body case 1 by the sharp cutting blade operation knob 3, and a protruding position where the cutting edge 4a is separated from the main body case 1. It can be freely rotated up and down to a storage position where it is substantially flush with the storage position.

In FIGS. 1 to 5, reference numeral 5 denotes an outer cutter frame made of aluminum die-cast that is removably mounted and engaged with the upper part of the main body case 1, and the main body case in which the serration blade 4 is provided. Notches 6a, 6a for accommodating the upper protruding portion of the blade 1 are formed at the lower front and rear faces, and an opening 8 is formed at the upper part to which the outer blade 7 made of electroformed nickel is curved into an arch shape. It is something that

The opposing side walls 9a, 9b of the outer cutter frame 5 are formed with engagement grooves 10a, 10b that engage with and disengage from engagement claws (not shown) provided on the main body case 1, respectively, and the widths of the opposing side walls 9a, 9b are formed. On both sides of the direction,
L as a locking receiving part that locks the edge of the outer cutter 7
Shape ribs 11a, 11b... are formed. Also, the front and rear walls 12a and 12b of the outer cutter frame 5
A plurality of rectangular recesses 13a, 13b, . . . for locking the longitudinal edges of the outer cutter 7 are formed on the inner surface, and 13b is larger than 13a. One of the outer cutters 7 has on both longitudinal edges thereof,
The outer cutter support plates 14a and 14b made of synthetic resin are fixed by an insert method, and rectangular recesses 13a and 1 of the outer cutter frame 5 are formed on the outer surface of both longitudinal edges of the outer cutter 7.
Column-like projections 15a, 15a, . . . and mouth-shaped projections 15b, 15b, . Further, L-shaped ribs 11a, 11b of the outer cutter frame 5 are provided at both longitudinal ends of the outer cutter support plates 14a, 14b.
An elastic engagement part that can be engaged and detached from..., specifically, the opening 16
Protrusions 17a, 17b, . . . which are imparted with elasticity are formed by the formation of ridges a, 16b, . Further, the outer cutter support plates 14a, 14b are formed with knobs 18a, 18b facing outward over substantially the entire length thereof, and these knobs 18a, 18b are attached to the outer cutter frame 5.
is held between the notches 6a, 6b of the outer cutter frame 5 and the upper part of the main body case 1 while being placed and engaged with the upper part of the main body case 1.

The upper portions of opposing side walls 9a and 9b of the outer cutter frame 5 are formed into outwardly sloping surfaces to make the opening 8 wide, and the shape of the outer cutter 7 that matches this is also close to a saddle shape. It is molded into.

Further, in a space 19 formed between the outer cutter frame 5 and the main body case 1, an inner cutter body 20 that slides on the inner surface of the outer cutter 7 is disposed as shown in FIG. In the outer cutter mounting device having the above configuration, the outer cutter 7 is inserted upward from the bottom of the outer cutter frame 5 as shown in FIG. Attached by shape. At this time, the protrusions 17a, 17 of the outer cutter support plates 14a, 14b fixed to the outer cutter 7
b... climbs over the horizontal sides of the L-shaped ribs 11a, 11b... and is accommodated in a portion surrounded by the ribs 11a, 11b... and the inner wall of the outer cutter frame 5 to prevent the outer cutter 7 from falling out in the vertical direction. will be applied. Further, columnar projections 15a, 15a provided on the longitudinal edge of the outer cutter 7
... and the mouth-shaped protrusions 15b, 15b, ... are fitted into rectangular recesses 13a, 13b, ... in the inner wall of the outer cutter frame 5, and compensate for horizontal positional deviation of the outer cutter 7. At this time, the knob 1 provided on the outer blade support plates 14a and 14b
8a and 18b are positioned to protrude outward (diagonally downward) through the notches 6a and 6b of the outer cutter frame 5. (See FIG. 5) When removing the outer cutter 7 from the outer cutter frame 5, move both the knobs 18a and 18b in a direction toward each other, and the outer cutter 7 will be bent and the outer cutter support plates 14a and 14b will be bent.
The protrusions 17a, 17b... are removed from the L-shaped ribs 11a, 11b... of the outer cutter frame 5, and the columnar protrusions 1
5a, 15b... and mouth-shaped protrusions 15b, 15b...
are removed from the rectangular recesses 13a and 13b, and the outer cutter 7 can be removed by pulling it downward from the outer cutter frame 5.

(G) Effects of the invention As explained above, the present invention has an outer blade which is removably mounted and engaged with the upper part of the main body case and has a number of hair introduction holes. An outer cutter fixing plate is fixed to both sides in the longitudinal direction of the outer cutter frame, and an elastic engagement portion formed at the end thereof forms a knob projecting outside the outer cutter frame from a lower opening of the outer cutter frame. This makes it possible to smoothly remove the outer cutter from the outer cutter frame through the knob without deforming the arch of the outer cutter into an abnormal shape, and it is convenient to attach and detach the outer cutter without getting your hands dirty.

Further, the knob can be exposed to the outside without impairing the design of the electric shaver, and there is an advantage that it is not limited by the wall thickness of the outer cutter frame as in the conventional example.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of essential parts showing an embodiment of the outer blade attachment device for a reciprocating electric shaver of the present invention, Figure 2 is a front view of the reciprocating electric shaver, and Figure 3 is a state in which the outer blade is attached. 4 is an enlarged view of the main part of FIG. 3, and FIG. 5 is a vertical cross-sectional view of the outer cutter frame in FIG.
It is a V′ cross-sectional view. 1...Main body case, 7...Outer cutter, 5...Outer cutter frame, 11a, 11b...Engagement receiver (L-shaped rib),
14a, 14b...outer blade fixing plate (outer blade support plate),
17a, 17b...Elastic engagement portion (protrusion), 18a,
18b... Picking part.

Claims (1)

[Scope of utility model registration request] An outer cutter frame is removably placed and engaged with the upper part of the main body case, and has a large number of hair introduction holes. an outer cutter fixing plate is fixed to both sides in the longitudinal direction of the outer cutter, and an elastic engagement portion formed at the end thereof is engaged with an engagement receiving portion of the outer cutter frame; An outer blade attachment device for a reciprocating electric shaver, characterized in that a blade fixing plate is provided with a knob that protrudes outside the outer cutter frame from a lower opening of the outer cutter frame.