JPH071094Y2 - Electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electric shaver in which a blade frame holding an outer blade is engaged with a main body case to which an inner blade is attached.

[Prior Art] FIG. 3 is a schematic vertical cross-sectional view of a main part of a conventional electric shaver. In the figure, reference numeral 21 denotes an elliptic cylindrical main body case having a motor 22 housed therein. The motor 22 is arranged with its output shaft 22a facing upward, and a cylindrical eccentric cam 26 is inserted into the output shaft 22a. On the upper surface of the eccentric cam 26, the eccentric shaft of the cam
An eccentric shaft 26a of the cam is engaged with a cam engaging portion 27a of the vibrator. A vibrating shaft 28a that supports a saddle-shaped inner blade 28 through an opening provided in the center of the top surface of the main body case 21 is connected to the upper surface of the vibrator 27. A saddle-shaped blade frame 25 that holds the outer blade 24 is attached to the upper side of the inner blade body 28 so as to cover the inner blade body 28.

That is, in the recessed portions 25a, 25a provided on both side surface upper portions of the main body case 21, it is possible to move laterally, and the blade frame stoppers 23, 23 biased outward by a spring prevent the slip-out. And is provided so as to project outward from the side surface. This blade frame stopper
In order to engage 23,23 with the engaging recesses 25a, 25a formed on the inner lower portions of the both side surfaces of the blade frame 25, the striking side surface of the blade frame 25 is pressed against the blade frame stoppers 23, 23, When is moved inward, the blade frame 25 can be mounted downward through the blade frame stoppers 23, 23. The lower end of the blade frame 25 is fitted and fixed to the upper portion of the side surface of the main body case 21, and the blade frame stopper 2
3,23 project into the engaging recesses 25a, 25a and are fixed.
When the blade frame 25 is detached from the main body case 21, the blade frame stoppers 23, 23 are pulled out from the engaging recesses 25a, 25a in the reverse procedure. As a result, the blade frame 25 is detachably fitted on the body case 21.

In the vibrating electric shaver having such a configuration, the eccentric cam 26 is driven by the motor 22, and the inner blade 28 connected to the vibrator 27 by the action of the eccentric cam 26 moves in the width direction of the case body 21. Vibrate to.

[Problems to be solved by the device]

As described above, in the conventional electric shaver, the shapes of the lower inner side surfaces of the blade frame 25 and the upper side surfaces of the main body case 21 are matched to each other, and the blade frame stopper is provided on both side surfaces of the main body case 21. The blade frame 25 is engaged with the tools 23, 23.
Therefore, for example, even when the width of the main body case 21 is formed to be narrow and the shape of the blade frame 25 is an inverted trapezoidal shape that widens toward the upper portion, the engagement recesses 25a, 25a on the inner surface of the blade frame 25 are formed. To
Blade frame stoppers 23, 23 projecting from the upper side of the body case 21
In order to engage with the
It must be shaped like a blister along 21 or at least parallel. In this case, it is possible to have an extra thickness on both outer sides of the blade frame 25 to make the outer shape wide as described above, but since the width dimension of the blade frame 25 is narrow, the wide inner blade body 28 is used. It cannot fit in this, and the size of the outer blade 24 is also limited.

In this way, in the conventional shaver, the body case
Since the 21 and the blade frame 25 are engaged with each other, there is a problem that their shapes, dimensions, designs, etc. are restricted.

The present invention has been made to solve the problem that the position of the blade frame stopper for locking the blade frame 25 to the main body case 21 is limited to the side surface of the main body case 21, and has a special shape. It is an object of the present invention to provide an electric razor capable of detachably engaging the blade frame 25 and the main body case 21 with a simple structure.

[Means for Solving the Problems]

The electric shaver according to the present invention has a blade frame for holding an outer blade,
In a vibrating electric shaver fitted to a body case supporting an oscillating inner blade, a pair of blade frame stoppers movable in the vibrating direction on a surface of the body case along the vibrating direction of the inner blade. And a spring for urging the blade frame stopper outwardly, so that the blade frame stopper is fitted into a pair of recesses formed inside the blade frame. Is characterized by.

[Operation] In the electric shaver according to the present invention, the blade frame stopper is moved inward against the bias by the spring by pressing the inner portion of the blade frame against the blade frame stopper. .
As a result, the blade frame passes through the blade frame stopper, and when the blade frame stopper reaches the position where the recessed portion is formed, this protrudes into the recessed portion and the blade frame is fixed to the main body case. The blade frame stopper is pulled out from the recessed portion in the reverse order of this.

〔Example〕

Hereinafter, the present invention will be specifically described with reference to the drawings showing an embodiment thereof. FIG. 1 is a partially cutaway perspective view of an electric shaver of the present invention, and FIG. 2 is a front view of the same. In the figure, 1 is the head 1a
And a main body 1b. The main body case 1 includes a rectangular tube-shaped main portion 1b and an inverted trapezoidal head portion 1a in front view.
Has a shape in which a step 1d for locking a blade frame described later is provided on the front side of the main portion 1b. The top surface of the head 1a is covered with a waterproof plate, and an inner blade (not shown) supported by a vibrating shaft is attached to the center of the top surface. On the upper side of the inner blade body, a saddle-shaped outer blade or a blade frame 7 is held and crowned so as to cover the inner blade body.

On the step 1d, a pair of stopper holders 4, 4 made of rectangular plate-like members are arranged symmetrically with respect to the central axis of the front surface of the head 1a with a gap of appropriate size. A projecting portion having a height reaching the top of the front surface of the head 1a is formed at a position on the upper surface of the rectangular plate-like member, which is closer to the mutually opposing sides. Also,
The outer surfaces of the stopper holders 4, 4 are tapered so as to narrow upward, and the upper corners of the outer surfaces are curved.

Further, a through hole penetrating along the width direction of the main body case 1 is provided in the lower portion of the stopper holders 4, 4. A pair of prismatic blade frame stoppers 3, 3 are loosely fitted in the through holes with one ends thereof facing each other so as to be movable in the width direction. At the end portions of the blade frame stoppers 3, 3 on the opposite side, retainers from the stopper holders 4, 4 are formed. In addition, the other ends of the blade frame stoppers 3, 3 have engaging portions 3b, 3b whose upper and lower surfaces are tapered.
Are formed.

Further, in the gap between the stopper holders 4, 4, the head 1a
A spiral spring 3a is arranged along the front surface of the. The helical spring 3a has a shape in which an eight-shaped extending portion is formed from both ends of a coil-shaped portion. Spiral spring 3a
Is arranged with the coil-shaped portion on the upper side, and the respective extending portions are inserted into the insertion holes provided on the mutually opposing surfaces of the retaining portions of the blade frame stoppers 3,3.

As a result, the blade frame stoppers 3, 3 are connected to the helical spring 3a, and the blade frame stoppers 3, 3 are urged outward. The gap in which the spiral spring 3a is arranged is covered by a vertical plate 1c which is integral with the waterproof plate covering the top surface of the head 1a.

On the other hand, the blade frame 7 is formed on the saddle-shaped outer blade portion 6 having an inverted trapezoidal shape in a front view in which both side surfaces of the head portion 1a are extended, and the front lower end portion of the outer blade portion 6, Similar to the front, the front engaging portion 5 having an inverted trapezoidal shape in front view is integrally formed. The central portion of the inner surface of the front engaging portion 5 is formed flat so as to cover the vertical plate 1c on the front of the head 1a and the stopper holders 4,4. Then, on both sides of the flat portion, the opposing surfaces have a shape that matches the outer side surfaces of the stopper holders 4, 4, and the same thickness as the stopper holders 4, 4 of the head 1a. A meat part is formed. At the lower part of the facing surface of the thick portion, a recessed portion is provided to engage the engaging portions 3b, 3b of the blade frame stoppers 3, 3.
5a, 5a are open. Note that FIG. 2 shows the vertical plate 1c, which is integral with the top surface of the head 1a, partially broken away, and the front engaging portion 5 of the blade frame 7 is removed. Further, the back surface lower end portion of the outer blade frame portion 6a of the blade frame 7 is formed so as to be aligned with the back surface upper end portion of the head portion 1a of the main body case 1.

The blade frame 7 is fitted to the main body case 1 having the above-described configuration as follows. That is, the thick portion formed on the inner side surface of the front engaging portion 5 of the blade frame 7 is opposed to the outer side of the stopper holding bodies 4, 4 formed on the front surface of the head 1a of the main body case 1. By pressing the surfaces against each other, the blade frame stoppers 3, 3 are moved inward against the bias of the spiral spring 3a. As a result, the lower end of the front engaging portion 5 of the blade frame 7 reaches the step 1d by passing through the engaging portions 3b, 3b of the blade frame stoppers 3,3. At the same time, the engaging portions 3b, 3b project into the recesses 5a, 5a and are engaged. Further, the lower back surface of the outer blade portion 6 and the upper back surface portion of the head portion 1a are engaged with each other. As a result, the outer blade portion 6 of the blade frame 7 is placed on the top surface of the head portion 1a of the body case 1, and the front surface of the head portion 1a is integrally covered by the front engaging portion 5 in the body case. 1 and the blade frame 7 are fitted together. Further, the blade frame 7 can be detached from the main body case 1 in the reverse order of this.

〔effect〕

As described in detail above, in the electric razor of the present invention,
A pair of blade frame stoppers 3,3 biased outward by springs are provided on the surface of the main body case 1 along the vibration direction of the inner blade, and are formed inside the blade frame stoppers 3,3 and the blade frame 7. It has a structure in which a pair of recesses are engaged. As a result, the engagement position between the blade frame and the main body case is not limited to the side portion, and the shape and design of the electric razor can be given flexibility. Further, even a blade frame and a main body case having a special shape can be engaged with a simple structure, which is easy to assemble, and has other excellent effects.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of the electric shaver of the present invention, and FIG.
The figure is also a front view, and FIG. 3 is a schematic vertical cross-sectional view of a main part of a conventional electric shaver. 1 ... Main body case, 3a ... Spiral spring 3,3 ... Blade frame stopper, 6 ... Outer blade part, 7 ... Blade frame

Claims (1)

[Scope of utility model registration request] 1. A vibrating electric shaver in which a blade frame holding an outer blade is fitted to a main body case supporting an oscillating inner blade, wherein a surface of the main body case along a vibration direction of the inner blade. , A pair of blade frame stoppers movable in the vibration direction and a spring for urging the blade frame stoppers outward are arranged, and the blade frame stoppers are formed inside the blade frame. An electric razor characterized by being fitted into a pair of recesses.