JPH0548714B2 - - Google Patents

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は往復式電気かみそり、殊に湾曲させた
状態で取り付けられる外刃の取付構造に関するも
のである。 The present invention relates to a reciprocating electric shaver, and particularly to a mounting structure for an outer cutter that is mounted in a curved state.

【従来の技術】[Conventional technology]

往復式電気かみそりにおいて、多数の刃孔が設
けられた外刃を薄肉の屈曲自在な金属板で形成し
て、湾曲させた状態で外刃フレームに取り付けた
ものがあるが、この取り付けにあたり、従来は外
刃フレームの内面側に係止部を設けて、湾曲させ
た状態の外刃の両端を上記係止部に係止してい
た。米国特許第4660283号明細書に示されている
一例を第１２図に示す。図中１が外刃であり、両
端は外刃フレーム２の内面に形成された係止部２
ａに係止されることによつて外刃フレーム２に取
り付けられている。図中４は基台４１とこの基台
４１に取り付けられた内刃ブレード４０とからな
る内刃である。 この場合、内刃が内面に摺接する外刃を肌に押
し付けるにあたつて、横方向から内刃の往復動方
向と交差する力が与えられると、外刃フレームの
内面と外面との間に位置する外刃の両端部に内刃
からの荷重が加わつてしまうものであり、外刃の
両端部の摩耗が激しく、時として外刃が破損して
しまうことがあつた。 また、外刃を湾曲させるにあたつての曲率半径
は、外刃の素材や内刃方との密着度といつた点か
らあまり小さくすることはできず、薄型化につい
て制限があるが、外刃の外側に更に外刃フレーム
があることは、更に薄型化を困難としており、顎
下のように肌の凹凸が大きい部分の髭剃りに際し
て、肌に当て難く、剃り残しを生ずることにな
る。 そして、このような問題点をなくすものとし
て、特開昭57−72680号公報に示された構造が提
案されている。これは外刃フレーム外面とこの外
面に取り付けられる挟持部材との間で外刃の両端
部を挟持したものである。その場合、内刃と外刃
の両端部との間に外刃フレームが介在するために
外刃にかかる負荷が小さくなり、また薄型化も図
りやすくなる。 Some reciprocating electric shavers have an outer blade with numerous blade holes made of a thin, flexible metal plate and are attached to the outer blade frame in a curved state. A locking portion was provided on the inner surface of the outer cutter frame, and both ends of the curved outer cutter were locked to the locking portion. An example shown in US Pat. No. 4,660,283 is shown in FIG. In the figure, 1 is the outer cutter, and both ends are locking parts 2 formed on the inner surface of the outer cutter frame 2.
It is attached to the outer cutter frame 2 by being locked to the outer cutter frame 2. In the figure, reference numeral 4 denotes an inner cutter consisting of a base 41 and an inner cutter blade 40 attached to the base 41. In this case, when the inner cutter presses the outer cutter, which is in sliding contact with the inner surface, against the skin, if a force is applied from the side that crosses the reciprocating direction of the inner cutter, there will be a gap between the inner and outer surfaces of the outer cutter frame. The load from the inner cutter is applied to both ends of the outer cutter, which causes severe wear at both ends of the outer cutter, sometimes resulting in breakage of the outer cutter. In addition, the radius of curvature when curving the outer cutter cannot be made too small due to the material of the outer cutter and the degree of adhesion with the inner cutter, and there are restrictions on making the outer cutter thinner. The presence of the outer cutter frame on the outside of the blade makes it even more difficult to make the blade thinner, and when shaving in areas where the skin is uneven, such as under the chin, it is difficult to apply the blade to the skin, resulting in unshaved areas. In order to eliminate such problems, a structure disclosed in Japanese Patent Application Laid-open No. 72680/1983 has been proposed. In this case, both ends of the outer cutter are held between the outer surface of the outer cutter frame and a holding member attached to this outer surface. In this case, since the outer cutter frame is interposed between both ends of the inner cutter and the outer cutter, the load applied to the outer cutter is reduced, and the thickness of the outer cutter can be easily reduced.

【発明が解決しようとする課題】[Problem to be solved by the invention]

しかし、上記公報に示されたものでは、挟持部
材が合成樹脂製であることもあつて、薄型化を図
つた場合に外刃フレームに十分な強度を与えるこ
とができず、また挟持部材から突出させた突起を
外刃フレームに差し込んで係合させるだけで挟持
部材の外刃フレーム外面への取り付けを行つてい
ることから、外刃フレーム外面に挟持部材を取り
付けた時に外刃フレーム外面から挟持部材が浮い
てしまつてがたつきが生じるおそれを多分に有
し、最悪の場合には挟持部材が外刃フレームから
外れてしまうおそれを有している。 本発明はこのような点に鑑み為されたものであ
り、その目的とするところは外刃の破損及び薄型
化を図るための外刃フレーム外面への外刃端部の
取り付けを確実に行うことができるとともに外刃
フレームに十分な強度を持たせることができる往
復式電気かみそりを提供するにある。 However, in the device disclosed in the above-mentioned publication, since the clamping member is made of synthetic resin, it is not possible to provide sufficient strength to the outer cutter frame when making the outer cutter frame thinner, and the clipping member protrudes from the clamping member. The clamping member can be attached to the outer surface of the outer cutter frame by simply inserting and engaging the protrusions that have been inserted into the outer cutter frame. There is a high possibility that the blade will float and cause rattling, and in the worst case, there is a risk that the clamping member will come off from the outer cutter frame. The present invention has been made in view of these points, and its purpose is to reliably attach the outer cutter end to the outer surface of the outer cutter frame in order to prevent damage to the outer cutter and reduce its thickness. To provide a reciprocating electric shaver which is capable of providing the outer cutter frame with sufficient strength.

【課題を解決するための手段】[Means to solve the problem]

しかして本発明は、湾曲させた外刃の両端を外
刃フレームの外面側に取着している電気かみそり
において、外刃フレームの外面との間で外刃の端
部を挟持する薄板状の金属製挟持部材を具備し、
内面に溝を形成する突条を有して上記溝に外刃フ
レーム外面に設けられて外刃に形成した位置決め
孔に挿入係止される位置決め突起が嵌まる挟持部
材は、その両端よりも中央部が外刃フレーム側に
凸曲する反りを予め備えるとともに、外刃フレー
ムに設けた取付孔に通されて外刃フレームの内面
側で折り曲げられる取付片を両端に備えて、外刃
内面に摺接する内刃ブレードを基台に取り付けた
内刃と上記外刃の両端部との間に外刃フレームが
介在し、挟持部材の上端が外刃フレームよりも外
刃の頂部側に外刃外面に沿つて突出していること
に特徴を有している。 ［作用］ 本発明によれば、外刃の側面を肌に押し付ける
ことで横方向から力が加わつても、外刃の外刃フ
レームへの取付部である両端部と内刃との間には
外刃フレームが存在していることから、外刃の両
端部が内刃から大きな荷重を受けることがなく、
また強度上の問題で厚みをある程度持たせておか
なくてはならない外刃フレームが外刃の内側に位
置する上に、外刃の外側に位置するのは薄板状の
挟持部材しかなく、薄型化を図ることができるも
のであり、更には挟持部材の上端付近で外刃の刃
孔に導入された髭が、外刃フレームの上端部との
間でこじられて引つ張れてしまうことがない。加
えるに、挟持部材が薄板状であるとはいえ、金属
製である上に補強リブとして機能することになる
突条を具備していることから、外刃フレームの強
度を高めることができ、そしてこの挟持部材は予
め与えられている反りの方向と外刃フレームへの
取付片による取り付けが両端でなされるとともに
取付片の折り曲げでなされることから、外刃フレ
ームに対する挟持部材の固定を浮きやがたつきが
生じることがない状態とすることができる。 実施例 以下本発明を図示の実施例に基づいて詳述する
と、第１図〜第３図に一実施例を示す。多数個の
刃孔１０が形成された外刃１は、薄肉の屈曲自在
な金属板で形成されており、その両端には夫々位
置決め孔１１が複数個設けられている。 外刃１を保持する外刃フレーム２は、ここでは
保持枠２０と取付枠２５とから形成してある。保
持枠２０はその両側面の外面に複数個の位置決め
突起２１ａ，２１ｂを具備するとともに、貫通孔
２２を具備し、更に両端面に外面の連結部２３を
備えているもので、外刃１はその両端の位置決め
孔１１内に保持枠２０の位置決め突起２１ａ，２
１ｂを挿入した状態で、各両端部に薄板状の取付
板３が被せられることで、湾曲した状態で保持枠
２０に取り付けられる。 ここにおける取付板３は、その両端に保持枠２
０の貫通孔２２に通されて保持枠２０の内面側で
折り曲げられる取付片３０を具備し、保持枠２０
の外面との間で外刃１を挟持するものであり、そ
の保持枠２０との対向面側には複数個の位置決め
突起２１ａ，２１ｂを逃げるための溝３１を備え
ている。尚、この溝３１は取付板３の表面側で突
条となるようにしてあることから、取付板３の強
度向上にも寄与している。 一方、外刃フレーム２における取付枠２５は、
モータやこのモータの回転を往復動に変換する駆
動子５０等が収納されている本体５に取り付けら
れるとともに、その両端上部に形成されている係
合溝２６に上記保持枠２０に設けられた連結部２
３が挿入されて、連結部２３におけるフツク２４
が係合することで保持枠２０が連結されるもので
ある。 しかしてこの電気かみそりでは、内刃ブレード
４０と基台４１と継手４２とから構成されて前記
駆動子５０に取り付けられる内刃４が、押し上げ
ばね５１による付勢を受けた状態で外刃１の内面
に摺接することで、外方１の刃孔１０から内部へ
と導入した髭を切断するものであり、そして第１
図から明らかなように、外刃１の両端部と、内刃
４との間には、外刃フレーム２における保持枠２
０が介在していることから、第１図に矢印で示す
ように、肌への押し付けに際して横方向から外刃
１及び内刃４に力が加えられても、内刃４におけ
る基台４１が保持枠２０の上部内面に接すること
で、内刃４の図中左右方向の動きに制限が加えら
れる。従つて、外刃１に過大な負荷が加わらず、
外刃１の破損を生じることがないものである。 尚、保持枠２０における位置決め突起２１ａ，
２１ｂのうち、両端の一対の位置決め突起２１
ａ，２１ａについては、その高さを外刃１の厚み
ｔより大きくするのはもちろん、第２図に示すよ
うに、取付板３の溝３１内面との間の〓間ｇが外
刃１の厚みｔ以下となるようにすることで、外刃
１の外れを防止している。また、この位置決め突
起２１ａ，２１ａを両端の２個としているのは、
上記〓間ｇが殆ど零か溝３１の深さより位置決め
突起２１ａの高さが大きくなつた場合でも、取付
板３がほぼ平行に取り付けられるようにするため
である。更に、取付板３には、予め第３図に矢印
Ａで示す反りを設けておき、保持枠２０への取付
時にこの反りが矯正されるようにすることで、取
付板３の取り付けにがたつきが生じないようにし
ており、また取付板３は第２図に示すように、保
持枠２０よりも図中βで示す分だけ上方に突出し
て、取付板３の上端付近で刃孔１０に導入された
髭が、保持枠２０の上端部との間でこじられて引
つ張れてしまうことがないようにしている。 第４図及び第５図に示す実施例では、外刃フレ
ーム２を保持枠２０と取付枠２５との両者に分割
せずに単一の部材で形成し、そして横方向からの
力を受けた時の内方４の動きは、外刃フレーム２
の内面に小間〓で対向する継手４２の部分が外刃
フレーム２に当接することで制限するようにして
いる。外刃フレーム２が本体５と一体に形成され
ていてもよい。図中２１は位置決め突起である。 このように外刃フレーム２の外面側に両端が固
定される外刃１として、外刃フレーム２に固定さ
れる前の形態が第６図に示すもの、つまり中央部
１ａが予め半径Ｒの円弧状断面を持つものとする
とともに、中央部１ａの断面２次モーメントを他
の部分より小さくして曲げ剛性が低くなるように
しておくことが好ましい。 曲げ剛性の変化は、たとえば中央部１ａにおけ
る刃孔１０間の桟の部分の幅を他の部分の桟の幅
より狭くしておくことや、中央部１ａの板厚を他
の部分の板厚より小さくしたり、刃孔１０が明い
ている割合である開口率を中央部１ａで大きくな
るようにすることによつて得ることができる。更
に外刃１を外刃フレームに取り付けた時の外刃１
の形状は、第７図に示すように、中央部カから端
部キに至るにつれて曲率半径ｒが漸次大きくなる
ようにしておくとともに、内刃４の内刃ブレード
４０も同様に、中央部から端部に至るにつれて曲
率半径が漸次大きくなるようにしておく。この場
合、前記駆動子５０内に配された押し上げばね５
１による内刃４の外刃１内面に向けてのばね付勢
により、内刃ブレード４０はその中央部から徐々
に端部側へ接触するようになり、押し上げ力が小
さくてすむ。外刃１の曲げ剛性を上述のように中
央部で低くしておくならば、更に押し上げ力を小
さくても、また外刃１の外刃フレーム２に装着し
た時点での中央部の曲率半径がかなり小さくなつ
ていても、外刃１と内刃ブレード４との密着度を
小さな押し上げ力で良好なものとすることがで
き、切断性の向上を得ることができる上に、外刃
１と内刃方４との間の摺動抵抗を低減させること
ができる。また、曲率半径を小さくすることは、
全体としての厚みを薄くできることになるが、本
発明の場合、外刃１両端の外刃フレーム２への取
り付けを外刃フレーム２の外面側で行つており、
しかも外刃フレーム２の外面との間で外刃の両端
部を挟持する挟持部材である取付板３の厚みは薄
くてよいものであり、外刃１の両端の外側に厚み
のある部材がなく、これ故に、薄型とすることが
より有効となつているものであり、顎の下や喉仏
周辺等の凹凸の入り込んだ部位でも、剃り残しな
く剃ることができる。 上記外刃１に対応する内刃ブレード４０の形状
を具体的に説明すると、内刃ブレード４０の刃先
が描く曲線は、第８図に示すように、内刃ブレー
ド４０の頂部をXY座標の原点とする場合、通常 Ｙ＝ａ・cosh・Ｘ／ａ（ａは定数） で示される双曲線形状や、高次の多項式で示され
る形状とされるが、ここでは外刃１への密着性を
高めるために、高次の多項式で示される形状とす
るとともに、刃先が形成されているＩ区間が６次
の多項式に近似する曲線とする。内刃ブレード４
０の刃先の接線の傾きをθとする時、この傾きθ
が内刃ブレード４０の頂部から離れるにつれて単
調増加する形状、すなわち第９図にＡで示す曲線
が得られるようにするわけである。ＢやＣで示す
曲線を描く場合には、図中ア，イで示すところに
変曲点があつて、この部分において外刃１との間
に〓間が生じてしまう。 さて、上述のように薄型化を図つた外刃１を設
ける場合には、第１０図及び第１１に示すよう
に、外刃１の一面が本体５の前面の略面一であ
り、外刃１の他面が前方側に大きく（α）傾いた
ものとしておくと、つまりは外刃１の頂部が本体
５の前面側に大きく寄つたところに位置するもの
としておくとよい。 最も切れ味が良くて切断効率が高くなつている
頂部が、通常本体５を持つて髭剃りを行なうにあ
たり、本体５を握る手の親指が当てられる本体５
前面と略同じ位置にあることから、使用者にして
みれば、頂部の位置を明確に認識しつつ、髭剃り
作業を行なうことができて、外刃１の頂部を求め
る部位に確実に当てて髭を剃ることができるもの
であり、また、本体５の前面側に配されているト
リマー刃５５と外刃１頂部との間隔が短くなるた
めに、スイツチハンドル５６，５７を操作しなが
らの外刃１及び内刃４による髭剃りと、トリマー
刃５５との使い分けが容易となる。第１１図中の
５８はモータである。 Therefore, the present invention provides an electric shaver in which both ends of the curved outer cutter are attached to the outer surface side of the outer cutter frame, in which a thin plate-shaped blade is provided to sandwich the end of the outer cutter between the outer cutter frame and the outer surface of the outer cutter frame. Equipped with a metal clamping member,
The clamping member has a protrusion forming a groove on its inner surface, and a positioning protrusion that is provided on the outer surface of the outer cutter frame and is inserted and locked into a positioning hole formed in the outer cutter is fitted into the groove, and the holding member has a protrusion that forms a groove on the outer surface of the outer cutter frame. The part is pre-curved so that it curves convexly toward the outer cutter frame, and both ends are provided with mounting pieces that are passed through the mounting holes provided in the outer cutter frame and bent on the inner surface of the outer cutter frame, so that they can be slid onto the inner surface of the outer cutter. An outer cutter frame is interposed between the inner cutter, which has the inner cutter blade attached to the base, and both ends of the outer cutter, and the upper end of the clamping member is positioned closer to the top of the outer cutter than the outer cutter frame and to the outer surface of the outer cutter. It is characterized by protruding along the length. [Function] According to the present invention, even if force is applied from the side by pressing the side surface of the outer cutter against the skin, there is no force between the inner cutter and both ends of the outer cutter where it is attached to the outer cutter frame. Due to the presence of the outer cutter frame, both ends of the outer cutter do not receive large loads from the inner cutter.
In addition, the outer cutter frame, which must be thick to some extent due to strength issues, is located inside the outer cutter, and the only thing located outside the outer cutter is a thin plate-shaped clamping member, making it thinner. Furthermore, the whiskers introduced into the blade hole of the outer cutter near the upper end of the clamping member will not be strained and pulled between the upper end of the outer cutter frame. . In addition, although the clamping member is thin plate-like, it is made of metal and has protrusions that function as reinforcing ribs, so the strength of the outer cutter frame can be increased. This clamping member has a predetermined warp direction and is attached to the outer cutter frame by the mounting pieces at both ends, and is also done by bending the mounting pieces, making it easy to fix the clamping member to the outer cutter frame. It is possible to create a state in which no sagging occurs. Embodiment The present invention will be described in detail below based on an illustrated embodiment. One embodiment is shown in FIGS. 1 to 3. The outer cutter 1, in which a large number of cutter holes 10 are formed, is formed of a thin flexible metal plate, and a plurality of positioning holes 11 are provided at each end of the outer cutter 1. The outer cutter frame 2 that holds the outer cutter 1 is formed of a holding frame 20 and a mounting frame 25 here. The holding frame 20 is provided with a plurality of positioning protrusions 21a and 21b on the outer surface of both sides thereof, and is also provided with a through hole 22, and is further provided with outer connecting portions 23 on both end surfaces. The positioning protrusions 21a, 2 of the holding frame 20 are inserted into the positioning holes 11 at both ends thereof.
1b is inserted, thin plate-like mounting plates 3 are placed on each end portion, so that it is attached to the holding frame 20 in a curved state. The mounting plate 3 here has holding frames 2 on both ends thereof.
0 through the through hole 22 and bent on the inner surface side of the holding frame 20.
The outer cutter 1 is held between the outer surface of the holding frame 20 and the outer cutter 1 is provided with a groove 31 on the side facing the holding frame 20 for allowing the plurality of positioning protrusions 21a and 21b to escape. Incidentally, since this groove 31 forms a protrusion on the surface side of the mounting plate 3, it also contributes to improving the strength of the mounting plate 3. On the other hand, the mounting frame 25 in the outer blade frame 2 is
It is attached to the main body 5 in which the motor and the drive element 50 that converts the rotation of the motor into reciprocating motion are housed, and the connection provided in the holding frame 20 is connected to the engagement grooves 26 formed at the top of both ends of the main body 5. Part 2
3 is inserted, and the hook 24 in the connecting part 23
By engaging, the holding frame 20 is connected. However, in this electric shaver, the inner cutter 4, which is made up of an inner cutter blade 40, a base 41, and a joint 42 and is attached to the driver 50, is pressed against the outer cutter 1 while being biased by a push-up spring 51. By slidingly contacting the inner surface, the hair introduced into the interior from the outer blade hole 10 is cut.
As is clear from the figure, there is a holding frame 2 in the outer cutter frame 2 between both ends of the outer cutter 1 and the inner cutter 4.
0, as shown by the arrow in FIG. 1, even if force is applied to the outer cutter 1 and the inner cutter 4 from the lateral direction when pressing against the skin, the base 41 of the inner cutter 4 By contacting the upper inner surface of the holding frame 20, the movement of the inner cutter 4 in the left-right direction in the figure is restricted. Therefore, an excessive load is not applied to the outer cutter 1,
This prevents the outer cutter 1 from being damaged. Note that the positioning protrusions 21a on the holding frame 20,
A pair of positioning protrusions 21 at both ends of 21b
As for a and 21a, the height thereof is of course greater than the thickness t of the outer cutter 1, and as shown in FIG. By making the thickness t or less, the outer cutter 1 is prevented from coming off. Moreover, the reason why these positioning protrusions 21a, 21a are two at both ends is because
This is to allow the mounting plate 3 to be mounted substantially parallel even if the distance g is almost zero or the height of the positioning protrusion 21a is greater than the depth of the groove 31. Furthermore, the mounting plate 3 is provided with a warp in advance as shown by arrow A in FIG. As shown in FIG. 2, the mounting plate 3 protrudes upward from the holding frame 20 by an amount indicated by β in the figure, and the mounting plate 3 is fitted into the blade hole 10 near the upper end of the mounting plate 3. This prevents the introduced whiskers from being strained and pulled between them and the upper end of the holding frame 20. In the embodiment shown in FIGS. 4 and 5, the outer cutter frame 2 is formed from a single member without being divided into both the holding frame 20 and the mounting frame 25, and is subjected to lateral forces. The movement of the inner 4 at the time is the outer blade frame 2
A portion of the joint 42 facing the inner surface of the outer cutter frame 2 at a booth angle contacts the outer cutter frame 2, thereby restricting the cutter frame 2. The outer cutter frame 2 may be formed integrally with the main body 5. In the figure, 21 is a positioning protrusion. As described above, the outer cutter 1 whose both ends are fixed to the outer surface side of the outer cutter frame 2 has a form shown in FIG. It is preferable to have an arcuate cross-section and to make the second moment of area of the central portion 1a smaller than that of the other portions so that the bending rigidity is lowered. The bending rigidity can be changed by, for example, making the width of the part of the crosspiece between the blade holes 10 in the central part 1a narrower than the width of the crosspiece in other parts, or by changing the thickness of the central part 1a to the thickness of other parts. This can be achieved by making the hole smaller or by making the aperture ratio, which is the percentage of the blade hole 10 open, larger in the central portion 1a. Furthermore, the outer cutter 1 when the outer cutter 1 is attached to the outer cutter frame.
As shown in FIG. 7, the shape of the inner blade 40 of the inner cutter 4 is such that the radius of curvature r gradually increases from the center part A to the end part K. The radius of curvature is made to gradually increase toward the end. In this case, the push-up spring 5 disposed inside the driver 50
Due to the spring biasing of the inner cutter 4 toward the inner surface of the outer cutter 1 by the inner cutter 1, the inner cutter blade 40 gradually comes into contact with the end portions from the center thereof, so that only a small pushing force is required. If the bending rigidity of the outer cutter 1 is lowered at the center as described above, even if the push-up force is further reduced, the radius of curvature at the center when the outer cutter 1 is attached to the outer cutter frame 2 will be Even if the outer cutter 1 and the inner cutter blade 4 are considerably smaller, the degree of adhesion between the outer cutter 1 and the inner cutter blade 4 can be made good with a small push-up force, and cutting performance can be improved. The sliding resistance between the blade and the blade 4 can be reduced. In addition, reducing the radius of curvature
Although the overall thickness can be reduced, in the case of the present invention, both ends of the outer cutter 1 are attached to the outer cutter frame 2 on the outer surface side of the outer cutter frame 2,
Moreover, the thickness of the mounting plate 3, which is a clamping member that clamps both ends of the outer cutter between it and the outer surface of the outer cutter frame 2, is thin and there is no thick member on the outside of both ends of the outer cutter 1. Therefore, it is more effective to make it thin, and it is possible to shave even in uneven areas such as under the chin and around the Adam's apple without leaving any residue. To specifically explain the shape of the inner blade 40 corresponding to the outer blade 1, the curve drawn by the cutting edge of the inner blade 40 points the top of the inner blade 40 to the origin of the XY coordinates, as shown in FIG. In the case of Therefore, the shape is expressed by a high-order polynomial, and the I section in which the cutting edge is formed is a curve that approximates a sixth-order polynomial. Inner blade 4
When the slope of the tangent to the cutting edge at 0 is θ, this slope θ
This is to obtain a shape in which the curve increases monotonically as it moves away from the top of the inner blade 40, that is, a curve indicated by A in FIG. 9. When drawing the curves indicated by B and C, there will be inflection points at locations A and B in the figure, and a gap will occur between the curves and the outer cutter 1 at these locations. Now, when providing the outer cutter 1 that is thinner as described above, one surface of the outer cutter 1 is substantially flush with the front surface of the main body 5, as shown in FIGS. It is preferable that the other surface of the outer cutter 1 is tilted significantly forward (α), that is, the top of the outer cutter 1 is positioned largely toward the front side of the main body 5. The top part of the main body 5, which has the best sharpness and the highest cutting efficiency, is where the thumb of the hand holding the main body 5 rests when shaving while holding the main body 5.
Since it is located at approximately the same position as the front surface, the user can perform shaving work while clearly recognizing the position of the top, and can ensure that the top of the outer blade 1 hits the desired area. This device allows you to shave your beard, and since the distance between the trimmer blade 55 arranged on the front side of the main body 5 and the top of the outer blade 1 is shortened, it is possible to shave while operating the switch handles 56 and 57. It becomes easy to use the trimmer blade 55 for shaving with the blade 1 and the inner cutter 4 and the trimmer blade 55. 58 in FIG. 11 is a motor.

【発明の効果】【Effect of the invention】

以上のように本発明においては、外刃フレーム
の外面と薄板状の挟持部材との間で外刃の両端部
を挟持して外刃フレームの外面側で外刃の両端部
を外刃フレームに取り付けて、外刃内面に摺接す
る内刃ブレードを基台に取り付けた内方と上記外
刃の両端部との間に外刃フレームを介在させてい
ることから、外刃の側面を肌に押し付けることで
横方向から力が加わつても、内刃の動きは外刃フ
レームで制限されるものであり、このために外刃
の外刃フレームへの取付部である両端部が内刃か
ら大きな荷重を受けることがなく、外刃の摩耗が
少なくなると同時に外刃の破損のおそれが少なく
なつているものであり、また外刃の曲率半径を小
さくして薄型化を図る場合にも、外刃の両端部の
外側に位置するのが、厚みのある外刃フレームで
はなく、薄板状の挟持部材であるために、薄型化
を有効に実現することができるものであり、更に
は挟持部材の上端を外刃フレームよりも外刃の頂
部側に外刃外面に沿つて突出させているために、
挟持部材の上端付近で外刃の刃孔に導入された髭
が、外刃フレームの上端部との間でこじられて引
つ張れてしまうことがなく、快適な髭剃りを行う
ことができる。しかも、挟持部材が薄板状である
とはいえ、金属製である上に補強リブとして機能
することになる突条を具備していることから、外
刃フレームの強度を高めることができて、外刃フ
レームの長手方向または短手方向両側を指でつま
んで持つ時のように大きな力が外刃フレームに加
えられても、外刃フレームが破損したりすること
がないものであり、そしてこの挟持部材は予め与
えられている反りの方向と外刃フレームへの取付
片により取り付けが両端でなされるとともに取付
片の折り曲げでなされることから、外刃フレーム
に対する挟持部材の固定を浮きやがたつきが生じ
ることがない状態とすることが確実に行えるもの
である。 As described above, in the present invention, both ends of the outer cutter are held between the outer surface of the outer cutter frame and the thin plate-shaped holding member, and both ends of the outer cutter are attached to the outer cutter frame on the outer surface side of the outer cutter frame. The outer blade frame is interposed between the inner blade attached to the base and both ends of the outer blade, so that the side surface of the outer blade is pressed against the skin. As a result, even if force is applied from the side, the movement of the inner cutter is restricted by the outer cutter frame, and for this reason, both ends of the outer cutter, which are the attachment points to the outer cutter frame, are subject to a large load from the inner cutter. This reduces wear on the outer cutter and reduces the risk of damage to the outer cutter.Also, when trying to make the outer cutter thinner by reducing the radius of curvature of the outer cutter, Since the thin plate-shaped clamping member is located on the outside of both ends, rather than the thick outer cutter frame, it is possible to effectively reduce the thickness of the clamping member. Because the top side of the outer cutter protrudes along the outer surface of the outer cutter than the outer cutter frame,
The beard introduced into the blade hole of the outer cutter near the upper end of the holding member is not twisted and pulled between the upper end of the outer cutter frame, and a comfortable shave can be performed. Furthermore, although the clamping member is thin, it is made of metal and has protrusions that function as reinforcing ribs, which increases the strength of the outer cutter frame and increases the outer cutter frame's strength. The outer cutter frame will not be damaged even if a large force is applied to the outer cutter frame, such as when holding both sides of the cutter frame in the longitudinal or lateral direction with fingers, and this pinching will not cause damage to the outer cutter frame. Since the member is attached at both ends by the pre-given warp direction and the attachment piece to the outer cutter frame, and by bending the attachment piece, it is possible to fix the clamping member to the outer cutter frame without lifting or rattling. It is possible to reliably create a state in which this does not occur.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明一実施例の断面図、第２図は同
上の部分拡大断面図、第３図は同上の分解斜視
図、第４図は他の実施例の断面図、第５図は同上
の分解斜視図、第６図は同上に使用する外刃の湾
曲前の断面形状の一例を示す断面図、第７図は外
刃の外刃フレームに取り付けた状態の曲率半径の
状態を示す説明図、第８図及び第９図は内刃ブレ
ードの形状の説明図、第１０図は別の実施例の斜
視図、第１１図は同上の断面図、第１２図は従来
例の断面図であつて、１は外刃、２は外刃フレー
ム、３は取付板、４は内刃、２０は保持枠、２５
は取付枠を示す。 Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of the same, Fig. 3 is an exploded perspective view of the same, Fig. 4 is a sectional view of another embodiment, and Fig. 5 is a sectional view of an embodiment of the present invention. An exploded perspective view of the same as above, Fig. 6 is a sectional view showing an example of the cross-sectional shape of the outer cutter used in the above before bending, and Fig. 7 shows the state of the radius of curvature of the outer cutter when it is attached to the outer cutter frame. 8 and 9 are explanatory diagrams of the shape of the inner cutter blade, FIG. 10 is a perspective view of another embodiment, FIG. 11 is a sectional view of the same, and FIG. 12 is a sectional view of a conventional example. 1 is an outer cutter, 2 is an outer cutter frame, 3 is a mounting plate, 4 is an inner cutter, 20 is a holding frame, 25
indicates the mounting frame.

Claims (1)

【特許請求の範囲】[Claims] １ 湾曲させた外刃の両端を外刃フレームの外面
側に取着している電気かみそりにおいて、外刃フ
レームの外面との間で外刃の端部を挟持する薄板
状の金属製挟持部材を具備し、内面に溝を形成す
る突条を有して上記溝に外刃フレーム外面に設け
られて外刃に形成した位置決め孔に挿入係止され
る位置決め突起が嵌まる挟持部材は、その両端よ
りも中央部が外刃フレーム側に凸曲する反りを予
め備えるとともに、外刃フレームに設けた取付孔
に通されて外刃フレームの内面側で折り曲げられ
る取付片を両端に備えて、外刃内面に摺接する内
刃ブレードを基台に取り付けた内刃と上記外刃の
両端部との間に外刃フレームが介在し、挟持部材
の上端が外刃フレームよりも外刃の頂部側に外刃
外面に沿つて突出していることを特徴とする往復
式電気かみそり。1. In an electric shaver in which both ends of the curved outer cutter are attached to the outer surface of the outer cutter frame, a thin metal clamping member that holds the end of the outer cutter between the outer cutter frame and the outer surface of the outer cutter frame is used. The holding member has a protrusion forming a groove on its inner surface, and a positioning protrusion provided on the outer surface of the outer cutter frame and inserted and locked into a positioning hole formed in the outer cutter is fitted into the groove, and the holding member has both ends thereof. The outer cutter frame has a warp in which the central part is convexly curved toward the outer cutter frame side, and mounting pieces on both ends that are passed through the mounting hole provided in the outer cutter frame and bent on the inner side of the outer cutter frame. An outer cutter frame is interposed between the inner cutter, which has an inner cutter blade attached to a base that makes sliding contact with the inner surface, and both ends of the outer cutter, and the upper end of the clamping member is positioned outward toward the top of the outer cutter than the outer cutter frame. A reciprocating electric razor characterized by a protrusion along the outer surface of the blade.