JP3113413B2 - Electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver in which an outer cutter frame incorporating an outer cutter is elastically locked at an end face thereof.

[0002]

2. Description of the Related Art Conventionally, a main body case, an outer blade frame detachably mounted on a head portion of the main body case, and an outer blade stretched in an arch shape are detachably mounted on the outer blade frame. An electric razor including an outer blade frame has been proposed. Such an electric razor is, for example,
As shown in No. 9581, an outer blade frame (corresponding to the auxiliary frame 3; hereinafter, only the figure number is attached) in which the outer blade is stretched in an arch shape is detachable from the outer blade frame 18. In addition, the outer blade can be easily cleaned and replaced, which is convenient.

[0003] The electric razor disclosed in this publication is
The outer cutter frame 3 includes an elastic hook portion 32, while the outer cutter frame 18 includes a stopper portion 28 for locking the elastic hook portion 32, the elastic hook portion 32 and the stopper portion 2.
An operation unit 16 for releasing the engagement with the outer member 8 by pressing it from the outside is provided integrally. When the outer cutter frame 3 is detached from the outer cutter frame 18, the elastic hook portion 32 is elastically deformed inward by the pressing operation of the operation portion 16, and the engagement between the elastic hook portion 32 and the stopper portion 28 is soon established. The engagement is released, and the outer cutter frame 3 can be removed from the outer cutter frame 18. When the outer cutter frame 3 is mounted on the outer cutter frame 18, the elastic hook portion 32 is restored to its own elasticity by inserting the outer cutter frame 3 to a predetermined position of the outer cutter frame 18. It is locked by the stopper portion 28 again by the force, and the mounting of the outer blade frame is completed.

[0004]

However, the electric razor described in this publication has an opening 25 in the end wall 9 of the outer cutter frame, and the unlocking key made of an elastic material is provided in the opening. 15 is fixed by clip connection. That is, the lock release key 15 including the outer blade frame and the operation unit 16 is formed of a separate member,
Due to an insufficient connection of these components, an error in the design dimensions, etc., the operation unit 16 is retracted inward and cannot be pressed sufficiently from the outside, or the tip of the lock release key 15 There is a concern that a problem may occur that the provided protrusion 17 does not reach the elastic hook portion 32 and cannot press the elastic hook portion 32.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. In the case where the operating portion for pressing the elastic hook portion is attached to the outer cutter frame by a separate member made of an elastic material,
These dimensions are easy to manage, and with simple mounting, the operation part protrudes outward enough for reliable operation.
The present invention provides an electric razor in which an outer cutter frame and an outer cutter frame can be engaged or disengaged with moderation.

[0006]

According to the present invention, there is provided a main body case.
1, the outer blade frame 2 is detachably attached to the head portion of the body case 1, the outer cutter frame member the outer blade 3 is detachably mounted in stretched arched to the outer blade frame 2 4 , the outer cutter frame 4 has elastic hook portions 18 at both ends of the inner cutter in the reciprocating direction, while the outer cutter frame 2 is located above the both ends of the inner cutter in the reciprocating direction. the stopper portion 12 for locking the elastic hook 18, when provided with a resilient arm portion 14 to release by pressing the engagement with the elastic hook 18 and the stopper portion 12 from the outside co
Then, below both ends of the inner blade in the reciprocating direction,
Recess 11 to be engaged with the engagement projection 10 provided on the pad portion
Between the elastic arm portion 14 and the engagement recess 11.
To, the outer blade frame 2 biasing Then simultaneously the resilient arm portion 14 is pressed against the outer wall of the head portion during attachment to the head portion of the body case 1 to the outside, the body case 1 f
Protruding portion 1 for suppressing rattling between the pad portion and the outer blade frame 2
6 is provided.

[0007]

The electric shaver according to the present invention is characterized in that the outer hook frame is engaged with a stopper provided on the outer cutter frame so that the outer cutter frame is engaged with the outer cutter frame. Be attached. Further, the engagement between the elastic hook portion and the stopper portion is released by the pressing from the outside by the elastic arm portion, and the outer cutter frame can be removed from the outer cutter frame. Here, when the outer blade frame is mounted on the head portion of the main body case, the projection provided on the outer blade frame is pressed against the outer wall of the head portion when the outer blade frame is mounted on the head portion of the main body case, and the elastic arm portion is pressed. Energize outward. Therefore, even if the elastic arm portion is not sufficiently fixed to the outer cutter frame, and even if the accuracy of the dimensional control of the elastic arm portion is low, the elastic arm portion is reliably positioned by being pressed by the head portion of the main body case. You. As a result, the operation of the elastic arm portion from the outside can be reliably performed, and the engagement or disengagement of the outer cutter frame and the outer cutter frame can be ensured with moderation. Furthermore, this projection engages with the elastic arm
Since the elastic arm portion is provided between the
Immediately urges the outer blade frame to the case
Is more secure, the engagement protrusion and the engagement recess
In addition to the engagement with the
Pressing against the outer wall reduces rattling of the outer blade frame
ing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of the present invention.

Reference numeral 1 denotes an electric shaver main body case. An outer cutter frame 2 is detachably attached to the head portion of the main body case 1, and an outer cutter frame 4 in which two outer cutters 3 are stretched in an arch shape is detachably attached to the outer cutter frame 2. At the upper end of the main body case 1, two inner blades 5 reciprocally driven in opposite directions are protrudingly provided, and cooperate with the outer blades 3 to cut a beard. A vibrator 6 connected to the inner blade 5, a motor (not shown) for reciprocating the vibrator 6, and a battery 7 for driving the motor are provided inside the main body case 1. I have. A trimmer 8 is provided on the surface of the main body case 1 so as to be freely protruded and housed, and a slide switch 9 for driving an electric razor is provided on a side surface.

The outer blade frame 2 is detachably mounted on the head of the main body case 1. That is, engaging projections 10 constantly biased outward are provided on both side surfaces of the head portion of the main body case 1, while the inner wall of the outer cutter frame 2 is engaged with the engaging projections 10. A recess 11 is provided.
The engagement protrusion 10 and the engagement recess 11 each have a tapered surface, so that they can be easily attached and detached. When removing the outer blade frame 2 from the head portion of the main body case 1,
Pull out the outer blade frame 2. At this time, the engagement protrusion 10 is smoothly retracted inward while being opposed to the biasing force of the spring by the tapered surface. Eventually, the engagement between the engagement protrusion 10 and the engagement recess 11 is released, and the outer cutter frame 2 is removed. Here, the engagement protrusion 10 is in a state of protruding outward again by the urging force of the spring. When the outer blade frame 2 is mounted, the engagement protrusion 10 is pushed inward by the reverse operation of removal, and when the engagement protrusion 10 comes to a position opposed to the engagement recess 11, the engagement protrusion 10 is moved outward. And the engaging projection 10 and the engaging recess 11 are engaged with each other to complete the mounting.

The outer cutter frame 4 is detachably mounted on the outer cutter frame 2. That is, the outer cutter frame 2 has a pair of stopper portions 12 on its inner wall. Further, the outer cutter frame 2 includes a pair of elastic plates 13 for removing the outer cutter frame 4. The lower end of the elastic plate 13 is the outer blade frame 2.
It is heat welded to the inner wall. The elastic plate 13 includes an elastic arm portion 14, a push button portion 15, and a protrusion 16 described later. Push button part 15 is outer blade frame 2
Projecting to the outside through the opening 17 of the camera, and can be operated from outside. On the other hand, the outer cutter frame 4 has an elastic hook portion 18. The elastic hook portion 18 is elastically deformed in the reciprocating direction of the inner blade. The elastic hook portion 18 engages with the stopper portion 12 of the outer cutter frame 2 to form the outer cutter frame 4.
Are mounted on the outer blade frame 2. When removing the outer cutter frame 4 from the outer cutter frame 2, the push button 15
, The elastic arm portion 14 bends inward,
The elastic hook portion 18 is pushed to be elastically deformed inward. Eventually, the elastic hook 18 and the stopper 12
And the outer blade frame 4 can be removed from the outer blade frame 2. Here, the elastic hook portion 18 has a tapered surface 19, and the tapered surface 19 is pushed out by the elastic arm portion 14, so that the outer cutter frame 4 slightly lifts up and is removed from the outer cutter frame 2. It will be easier. When the outer cutter frame 4 is attached to the outer cutter frame 2, as the outer cutter frame 4 is inserted into the outer cutter frame 2, the elastic hook portion 18 is smoothly moved by the tapered surface 19 of the elastic hook portion 18. When the elastic hook portion 18 comes to the engagement position with the stopper portion 12 while bending inward, the elastic hook portion 18 engages with the stopper portion 12 by the elasticity of the elastic hook portion 18 to complete the mounting.

Now, the protrusion 16 provided on the elastic plate 13 will be described. The protrusion 16
When the outer blade frame 2 is mounted on the head portion of the main body case 1, the outer blade frame 2 is pressed against the outer wall of the head portion and urged outward. Since the projection 16 and the elastic arm 14 are formed integrally with the elastic plate 13, the elastic arm 14 is also urged outward when the projection 16 is urged outward. For this reason, even if the elastic plate 13 is not sufficiently fixed to the outer cutter frame 2 by heat welding, or is fixed with some play, or the accuracy of the dimensional control of the elastic plate 13 is low. The positioning is ensured by being pressed against the head of the main body case 1. As a result, the push button unit 1
5 protrudes sufficiently from the opening 17 of the outer cutter frame 2 to the outside, the operation from the outside can be performed reliably, and the outer cutter frame 4 and the outer cutter frame 2 are securely engaged or engaged with the moderation. Can be canceled.

Further, the protrusion 16 is provided on the elastic arm 1.
4 is pressed outwardly, the gap between the elastic arm portion 14 and the outer blade holder 2 is eliminated, and there is no fear of shavings entering. As a result, operation failure does not occur in the detaching operation of the outer blade frame 4, and no shavings fall out from the opening 17.

Further, the protrusion 16 presses the elastic arm portion 14 outward, thereby forming the outer cutter frame 2.
Is more securely fixed to the body case 1,
In addition to the engagement between the engagement projections 10 and the engagement recesses 11, the contact between the projections 16 and the outer wall of the head portion of the main body case 1 suppresses the play of the outer cutter frame 2.

[0015]

According to the present invention, there is provided a main body case, an outer blade frame detachably mounted on a head portion of the main body case,
An outer cutter frame having an outer cutter stretched in an arch shape and removably mounted on the outer cutter frame, wherein the outer cutter frame has elastic hook portions at both ends in the reciprocating direction of the inner cutter. And the outer cutter frame has an inner cutter reciprocating direction.
Above both ends, a stopper portion for locking the elastic hook portion and an elastic arm portion for releasing the engagement between the elastic hook portion and the stopper portion by pressing from outside are provided.
The head of the main body case below both ends in the reciprocating direction of the inner blade.
An engagement recess to be engaged with an engagement projection provided on the
Between the serial elastic arm portion and the engagement recess, urging Then the said resilient arm portion is pressed against the outer wall of the head portion during mounting of the outer blade frame to the head portion of the main body casing outwardly
Occasionally, the rattle between the head of the main body case and the outer blade frame
Because characterized in that having projections to suppress the key, when mounting the outer blade frame to the head portion of the body case, the protrusion provided on the outer blade frame is pressed against the outer wall of the head portion The elastic arm is urged outward. Therefore, even if the elastic arm portion is not sufficiently fixed to the outer cutter frame, and even if the accuracy of the dimensional control of the elastic arm portion is low, the elastic arm portion is reliably positioned by being pressed by the head portion of the main body case. You. As a result, the operation of the elastic arm portion from the outside can be reliably performed, and the engagement or disengagement of the outer cutter frame and the outer cutter frame can be ensured with moderation. Furthermore, this projection has an elastic arm and an engagement recess.
Between the elastic arms outward.
At the same time as urging, fixing the outer blade frame to the main body case
And the engagement projection and the engagement recess
In addition to the engagement, this projection and the outer wall of the head
To prevent rattling of the outer blade frame.
You.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of an electric shaver of the present invention.

FIG. 2 is a perspective view of the electric shaver of the present invention, in which (a) is a perspective view of an outer blade holder, and (b) is a perspective view of a state in which the outer blade holder is mounted on a main body case.

FIG. 3 is an end view of a main part of the electric shaver of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Outer blade frame 3 Outer blade 4 Outer blade frame 5 Inner blade 6 Vibrator 7 Battery 8 Trimmer 9 Slide switch 10 Engagement protrusion 11 Engagement recess 12 Stopper part 13 Elastic plate 14 Elastic arm part 15 Push button Part 16 Projecting part 17 Opening part 18 Elastic hook part 19 Tapered surface

Claims (1)

(57) [Claims] And 1. A main body case 1, an outer blade frame 2 is detachably attached to the head portion of the body case 1, the outer edge 3
The in electric shaver comprising an outer cutter frame member 4 which is stretched in an arch shape is detachably attached to the outer blade frame 2, the elastic hook to the outer cutter frame member 4 is inner cutter reciprocating direction both end portions comprising a unit (18), whereas the outer blade frame 2, the inner cutter forward
Above the backward direction end portions, a stopper portion 12 for locking the elastic hook 18, the elastic arm portion 14 to release by pressing the engagement with the elastic hook 18 and the stopper portion 12 from the outside And both ends in the reciprocating direction of the inner blade
The engagement projection 1 provided on the head portion of the main body case 1
0, wherein the elastic arm portion
Between 14 and the engagement recess 11, urging the outer blade frame 2 to the main body case 1 of the elastic arm portion 14 is pressed against the outer wall of the head portion during mounting of the head portion outwardly Then
At the same time, the head portion of the main body case 1 and the outer blade frame 2
An electric razor comprising a projection portion 16 for suppressing rattling .