JPS6014889A - Inner blade of electric razor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は電気かみそりの内刃に関するも−のであり、特
に内刃の回転軸が外刃の頂上に対して平行な横方向に配
置されているロータリ一式と呼ばれる内刃の形状に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inner cutter for an electric shaver, and particularly to an inner cutter called a rotary set in which the rotation axis of the inner cutter is arranged in a horizontal direction parallel to the top of the outer cutter. It is related to the shape of.

このタイプの電気かみそりの内刃は例えば実公昭４２−
１９０８９号公報に示される様に・帯状板に適当ピンチ
にて刃部を形成した内刃と、転勤及び軸移動可能な外刃
を接触させてヒゲ剃りを行なうものであるが、ヒゲ剃り
時に電気かみそりを皮膚に押圧することにより外刃と内
刃を密着させる構造であるため、押圧力により両者の接
触圧力が変化し、したがって負荷が変わるため、消費電
流０回転数に変動をきたし、さらには前記押圧力が少な
い場合には切れ味等の快適性に欠ける部分があった。こ
れは、前記内刃体は薄板で作られてはいるが、バネ形状
部がないため、内刃体のバネ性はかなり強いものとなっ
てしまっているからである。本発明はこれらの欠点を改
善することを目的としており以下に図をもって詳述する
。The inner blade of this type of electric razor is, for example,
As shown in Publication No. 19089, shaving is performed by bringing the inner blade, which has a cutting edge formed by appropriately pinching a strip plate, into contact with the outer blade, which can be rotated and moved around its axis. Since the structure is such that the outer and inner blades are brought into close contact by pressing the razor against the skin, the contact pressure between the two changes due to the pressing force, and therefore the load changes, causing fluctuations in current consumption and zero rotation speed. When the pressing force is small, there are some areas where comfort such as sharpness is lacking. This is because although the inner cutter is made of a thin plate, it does not have a spring-shaped portion, so the springiness of the inner cutter is quite strong. The present invention aims to improve these drawbacks and will be explained in detail below with reference to the drawings.

第１図は本発明の一実施例による内刃を採用し電気かみ
そりの正面側からみた断面図。FIG. 1 is a cross-sectional view of an electric shaver, seen from the front, employing an inner cutter according to an embodiment of the present invention.

第２図は第１図のＡ−Ａ断面図。FIG. 2 is a sectional view taken along line A-A in FIG.

第３図は前記内刃の分解拡大斜視図。FIG. 3 is an exploded, enlarged perspective view of the inner cutter.

第４図は前記内刃の正面側からみた断面図。FIG. 4 is a sectional view of the inner cutter seen from the front side.

第５図は前記内刃を構成する内刃体の平面図０第６図は
該内刃体の側断面図。FIG. 5 is a plan view of the inner cutter body constituting the inner cutter, and FIG. 6 is a side sectional view of the inner cutter body.

第７図は内刃体の撓み状態を示す内刃（＋１１断面図・
全図中、１は本体ケース、２は外刃５、内刃２０の保持
部材である外刃枠、６は内刃の駆動軸で一部に軸方向に
伸びる突起部３ｂを有し、内刃体４の保持部材である内
刃支持具１３の変形穴に穴に嵌合している。又、計部動
軸６は、ろα、ろ０部にて前記外刃枠２の２α、２ｂに
軸支されている。６は６α、６ｂに軸を有し、本体ケー
ス１の１６，１ｃに軸支されているプーリーで、ベルト
１６が巻き付き、モーター７のシャフトに嵌着する原動
プーリー９から駆動される。８は前記モーターの軸受部
で、モーター７の本体ケース１に対する位置決め手段と
もなるｏｌｏは電池等の電源部、１１は電気回路、１２
はスイッチボタンである。Figure 7 shows the inner blade (+11 sectional view /
In all the figures, 1 is the main body case, 2 is the outer cutter frame which is a holding member for the outer cutter 5 and the inner cutter 20, and 6 is the drive shaft of the inner cutter, which has a protrusion 3b partially extending in the axial direction. It fits into a deformed hole of an inner blade support 13 which is a holding member for the blade body 4. Further, the measuring part moving shaft 6 is pivotally supported by the outer cutter frame 2 at 2α and 2b at the groove α and the groove 0 portion. Reference numeral 6 denotes a pulley having shafts at 6α and 6b, which is pivotally supported by 16 and 1c of the main body case 1, around which a belt 16 is wound, and which is driven by a driving pulley 9 fitted onto the shaft of a motor 7. Reference numeral 8 denotes a bearing portion of the motor; olo, which also serves as means for positioning the motor 7 relative to the main body case 1; a power supply unit such as a battery; 11, an electric circuit; and 12
is a switch button.

動作について説明する０使用者がスイッチボタン１２を
ＯＮ側に動作すると周知のスイッチ機構により電気回路
１１が閉となり電源部１０よりモーター７に電流が流れ
る０モーター７が回転するとプーリー９．ベルト１６．
プーリー６、が回転する。該プーリー６の６ｃ部端面は
型車となって前記駆動軸３と係合しているため、駆動軸
６が回転し前記突起部３ｂにて前記内刃支持具１３をモ
ーター７と同一方向に回転させる。該内刃支持具１３に
は第３図に示すとおりその円周方向に前記内刃体４の固
定部４αをカシメ固定するためのビン１’５’ａが多数
突出している。又、内刃支持具１３の両端部は段部１６
ｂを有し、該段部外周には止め具１４が圧入される。前
述したとおり、本発明の一実施例では内刃２０は内刃支
持具１３、内刃体４、止め具１４で構成されているが、
該内刃体４の平面形状は第５図に示す形状であり、一枚
の刃については内刃支持具１３に固定される固定部４α
、第５図の内刃体４の板厚方向に撓み可能なバネ部４ｂ
・刃部４ｉに連がる当接部４ｃ。Explanation of operation 0 When the user turns the switch button 12 to the ON side, the electrical circuit 11 is closed by a well-known switch mechanism, and current flows from the power supply unit 10 to the motor 7 0 When the motor 7 rotates, the pulley 9. Belt 16.
Pulley 6 rotates. Since the end face of the pulley 6 at 6c serves as a model wheel and engages with the drive shaft 3, the drive shaft 6 rotates and the protrusion 3b moves the inner cutter support 13 in the same direction as the motor 7. Rotate. As shown in FIG. 3, the inner cutter support 13 has a large number of pins 1'5'a projecting in the circumferential direction thereof for caulking and fixing the fixing portion 4α of the inner cutter body 4. Further, both ends of the inner blade support 13 are provided with stepped portions 16.
b, and a stopper 14 is press-fitted onto the outer periphery of the stepped portion. As mentioned above, in one embodiment of the present invention, the inner cutter 20 is composed of the inner cutter support 13, the inner cutter body 4, and the stopper 14.
The planar shape of the inner cutter body 4 is the shape shown in FIG.
, a spring portion 4b that can be bent in the thickness direction of the inner cutter body 4 in FIG.
- A contact portion 4c that is connected to the blade portion 4i.

４ｄ、４ｇ各々の刃を連結している連結部４’ｊ＋４　
／　、　’４　ｆ　、　４　ｈ　、刃部４ｉより構成さ
れている。Connecting part 4'j+4 connecting each blade of 4d and 4g
/, '4 f, 4 h, and a blade portion 4i.

これを−ブロツクとして本発明の一実施例では６ブロノ
クがそれぞれ隣接して６枚の刃が構成されている。In one embodiment of the present invention, six blocks are arranged adjacent to each other to form six blades.

内刃２０を組立てる際には先ず、前記内刃体４の固定部
４α、連結部４　ｊ　Ｊ４　ｆ　、　４　ｆ　、　４　
ｈのそれぞれの穴と内刃支持具１６の前記ビン１３ａの
位置を合わせながら内刃支持具１３の外周に巻きつけて
いくと、該内刃体４の４ｆ部と４２部は同一のビン１３
αに重合して嵌合することになる。When assembling the inner cutter 20, first, the fixing part 4α and the connecting parts 4 j J4 f , 4 f , 4 of the inner cutter body 4 are assembled.
When wrapping the inner cutter body 4 around the outer periphery of the inner cutter support 13 while aligning each hole with the pin 13a of the inner cutter support 16, the 4f portion and the 42 portion of the inner cutter body 4 are aligned with the same pin 13a.
It will be polymerized and fitted to α.

この状態を第７図に示す。そして、これらのビンをカシ
メて内刃体４を内刃支持具１３に固定部４αを介して固
定する。すると、内刃体４の２＜ネ部４ｂ部は該固定箇
所から、該内刃支持具１３の外周円の接線方向に突出す
る。したがって、該）くネ部に連がる刃部４ｉも同方向
に突出するが、該刃部の最先端は第６図に示すとおり予
めへの字に折り曲げられているため該先端部はさらに内
刃支持具１６から半径の大きな位置に安定する。該刃部
４ｉと一体である４ｃ、４ｄ、４ｇ部も前記と同一の接
線方向に向くが、該部分は前記固定部４ａからの距離が
短いため、前記内刃支持具１６の外周に対して当接した
状態か、又は離れているとしても少ない量である。この
様にしたあと、第３図に示すとおり内刃支持具１３の両
端面より段部１３ｂに止め具１４を嵌着させる。すると
該止め具１４の一部は前記連結部４ｊ、４ｆ、４１及び
当接部４ｃ上を半径方向の少ないガタを以って覆うこと
になり、この状態を第４図に示す。This state is shown in FIG. Then, these bottles are caulked to fix the inner cutter body 4 to the inner cutter support 13 via the fixing portion 4α. Then, the 2<neck portion 4b of the inner cutter body 4 protrudes from the fixed location in the tangential direction of the outer circumferential circle of the inner cutter support 13. Therefore, the blade part 4i that is connected to the neck part also protrudes in the same direction, but since the leading edge of the blade part is bent in advance as shown in FIG. It is stabilized at a position with a large radius from the inner cutter support 16. The parts 4c, 4d, and 4g, which are integral with the blade part 4i, also face in the same tangential direction as described above, but since the distance from the fixed part 4a is short, these parts are oriented toward the outer periphery of the inner blade support 16. Either they are in contact, or they are separated by a small amount. After doing this, as shown in FIG. 3, the stopper 14 is fitted onto the stepped portion 13b from both end surfaces of the inner cutter support 13. Then, a part of the stopper 14 covers the connecting parts 4j, 4f, 41 and the contact part 4c with little play in the radial direction, and this state is shown in FIG. 4.

以上の構成になっているため該内刃２０が第２図に示す
如く前記刃部４ｔの刃先方向（第２図の矢印方向）に回
転すると、外刃５と接触可能な第２図の上方部分にて前
記内刃体４のバネ部４ｂが適当な撓み量にて撓んだ状態
で外刃５の内周を摺動する。このため、前記外刃５の周
知の孔からヒゲが入ってくると、該外刃５と該内刃体４
の刃先の密着した協働作用でヒゲを剃り落す。With the above configuration, when the inner cutter 20 rotates in the direction of the cutting edge of the blade portion 4t (in the direction of the arrow in FIG. 2) as shown in FIG. The spring portion 4b of the inner cutter body 4 slides on the inner periphery of the outer cutter 5 in a state where it is deflected by an appropriate amount of deflection. For this reason, when hairs enter through the well-known hole of the outer cutter 5, the outer cutter 5 and the inner cutter body 4
Shave off the beard with the close cooperation of the blade edges.

又・本発明の一実施例では、第５図に示すとおり、該内
刃体、４の固定部４ａと刃部４ｔとの間にバネ４ｂを介
在させていること、又、このバネ部４ｂの軸線が内刃２
０の回転方向（第５図にＢの矢印で示す）に対してθ１
　、θ２だけ傾いていることが一つの特徴であり、こう
することにより外刃５と内刃体４の摺動を円滑にするた
めに内刃の刃数を６枚と、多く設けたとしても（したが
って第５図に示す内刃体の各刃のピンチが小さくなった
としても）、バネの長さを長くとれるため前記外刃５と
内刃体４の接触時の撓みを大きく設定しである場合にも
その接触圧力を少なく設定できる。Further, in one embodiment of the present invention, as shown in FIG. 5, a spring 4b is interposed between the fixed part 4a of the inner blade body 4 and the blade part 4t, The axis of the inner blade 2
θ1 with respect to the rotation direction of 0 (indicated by arrow B in Figure 5)
, one of its characteristics is that it is tilted by θ2, and by doing this, in order to smooth the sliding movement between the outer cutter 5 and the inner cutter body 4, even if the number of inner cutters is increased to 6, (Thus, even if the pinch of each blade of the inner cutter body shown in FIG. 5 becomes smaller), since the length of the spring can be made longer, the deflection when the outer cutter 5 and the inner cutter body 4 contact can be set large. Even in some cases, the contact pressure can be set lower.

又、回転方向に対して傾けておくことにより、万−Ｕ料
の疲労、劣化等により該バネ部が折れた場合にも前記外
刃の孔から該バネ部が長く突出してくることを防止でき
る。なぜならバネ部４ｂか細くても傾けておくことによ
り突出の途中にて、やがて外刃の孔の内壁と干渉してそ
れ以上の突出を防止できるからである。又、本発明の一
実施例では第１図に示すとおり外刃５は外刃枠２に同定
しているため、従来のものに見られた皮膚への電気かみ
そりの押し当て力が大きい場合でも該外刃５にて該力を
支えるため、常に前記外刃５と内刃体４の密着力は一定
となり、消費電流、内刃２０の回転数が変化することは
ない。又、本発明の一実施例では触子バネ部４ｂを４本
設けであるが、それぞれ隣接するバネの軸線はθ１＋０
２の角度を成じて平行ではない。これは、ヒゲ剃り中に
第５図の内刃体刃先にＣ方向の切断抵抗が加わり、内刃
の刃、特に前記バネ部４ｂを座屈させる作用を成すが、
全部のバネ部４ｂを同一方向に同−角度傾いたθ１で構
成したものに比して座屈強度を強く構成でき、一度に多
数のヒゲを切断する場合にも該バネ部が座屈することは
ない。又、第７図に示すとおり、ヒゲ切断時に前記切断
抵抗Ｃを内刃体は受けるが、前記バネ部４ｂにはＣＸＬ
に相当する曲げモーメントが発生し、該モーメントによ
り細いバネ４ｂが内刃体の厚さ方向に変形し・ヒゲの切
断性能の低下、又は破損する場合があるため、本発明の
一実施例では、前記刃部４ｉから伸びる当接部４ｃ、４
ｄ、４ｇを設けていることも一つの特徴である。Furthermore, by tilting the blade with respect to the direction of rotation, even if the spring part breaks due to fatigue or deterioration of the U-U material, it is possible to prevent the spring part from protruding for a long time from the hole of the outer cutter. . This is because even if the spring portion 4b is thin, by tilting it, it will eventually interfere with the inner wall of the hole of the outer cutter in the middle of protrusion, thereby preventing further protrusion. Furthermore, in one embodiment of the present invention, the outer cutter 5 is identified to the outer cutter frame 2 as shown in FIG. Since the outer cutter 5 supports the force, the adhesion between the outer cutter 5 and the inner cutter body 4 is always constant, and the current consumption and the rotational speed of the inner cutter 20 do not change. Further, in one embodiment of the present invention, four contact spring portions 4b are provided, and the axis of each adjacent spring is θ1+0.
They form an angle of 2 and are not parallel. This applies cutting resistance in the C direction to the cutting edge of the inner cutter shown in FIG. 5 during shaving, which acts to buckle the inner cutter, especially the spring portion 4b.
Compared to a structure in which all the spring parts 4b are tilted in the same direction at the same angle θ1, the buckling strength can be made stronger, and the spring parts will not buckle even when cutting a large number of hairs at once. do not have. Further, as shown in FIG. 7, the inner blade body receives the cutting resistance C when cutting hair, but the spring portion 4b has a CXL.
A bending moment corresponding to is generated, and this moment deforms the thin spring 4b in the thickness direction of the inner blade, resulting in a decrease in hair cutting performance or damage. Therefore, in one embodiment of the present invention, Contact portions 4c, 4 extending from the blade portion 4i
Another feature is that d and 4g are provided.

前述したとおり４ｃ、４ｄ、４Ｇ部は前記固定部４αの
近傍にあるため・内刃支持具１３の外周の近くにあり内
刃支持具の外周に当接可能である。As described above, the portions 4c, 4d, and 4G are located near the fixed portion 4α, and therefore are near the outer periphery of the inner cutter support 13 and can come into contact with the outer periphery of the inner cutter support.

このため、前記ＣＸＬのモーメントを受けて前記バネ部
４ｂが、前記板厚方向に異常変形しようとすると、４Ｇ
、４ｄ、ｄｅ部が、内刃支持具１６の外周に当接して該
モーメントを受け、異常変形させない様に働く。この作
用のため、該当接部４ｅと刃部４イの間の腕は前記バネ
部４ｂのバネ性よりも強いバネになっている。しかし、
該当接部４　ｃ　、　４　ｄ、　、　４　ｅ部はバネ部
４ｂが外刃５により撓められるときの見かけ上の撓み中
心点Ｐ（内刃体の刃先は外刃により撓められる場合、略
Ｐ点を回転中心とする軌跡で第７図の破線位置まで撓み
変形する）よりも刃部から遠ざかる方向にわずかＦの距
離だけ離れているため、前記外刃５との通常撓み時には
内刃支持具から離れる方向に移動し、該４ｃ、４ｄ、４
ｇに連がる前記強いバネにより前記、外刃と内刃との接
触圧が１強くなることはなく、又、前記撓み中心点Ｐか
らの距離が少ないため、前記撓み時の上方への変位量も
少なく、４ｃの上方に位置する前述の止め具１４にも当
接しないため前記通常撓み時の内刃体のバネ力はバネ部
４ｂによるものだけであり前述したとおり、消費電流、
回転数を一定水準に確保でき、ヒゲ剃り時又は°外刃が
ヒゲ剃り時の肌からの押力により変形した場合の前記Ｃ
よりさらに大きな負荷にも異常変形又は破損することも
ない。これは前述したとおり、外刃５と内刃体４の通常
の密着作用を成すバネ手段４ｂと、過負荷が加わった際
に内刃体４又は、前記バネ手段の両手段を設け、少なく
とも強いバネ手段は大きな負荷が作用した時でなければ
作用しない様にしたことの効果であり、本発明の一つの
特徴である。なお本発明の一実施例を示す内刃体の平面
形状は第５図に示すとおり切れ刃の幅が長く上下に伸び
ているが、刃部４ｔの上下の両端部近くは、バネ部４ｂ
による片持ち梁になるため、前述したヒゲの切断抵抗Ｃ
に対して前記異常変形を起こし易いため、本発明の一実
施例では当接部４ｃと４８の２ケ所よりこの抵抗による
モーメントを受ける様配慮され、又、刃部４ｉの中央部
はその近傍の左右に位置する４ｂのバネにて該抵抗を受
けるが、一方では刃部４ｔの両端部からの距離が長＜４
ｉ部の該中央部付近に加わる曲げモーメントも大きなも
のになるため、この部分についても４ｄと４Ｃの当接部
の２ケ所にて前記異常変形のモーメントを受ける様構成
１−でいる０したがって刃部４ｉが上下に長くなければ
、なる程当接部の本数を増やして配置する必要があるが
、前記理由により少なくとも両端部近傍と、中央部近傍
の６ケ所は必要となる０又、本発明の一実施例の如く、
内刃体４を内刃２０の回転中心である駆動軸乙の同心円
として成る内刃支持具１６の外周円の接線方向に配置し
た内刃２０は、回転中、刃部４ｉに作用する遠心力によ
り回転中心より遠ざかろうとするが、この時には前述の
止め具１４の内面に内刃体４の４Ｃ部先端が当接し、そ
れ以上遠ざかろうとすることを防止する。このため内刃
２０を高速回転させても内刃体の刃先の位置は適正位置
に保持され、外刃５との接触圧が強くなるとか、内刃２
０の半径が大きくなり過ぎるための外刃との係合量始点
における異常者の発生等は生じない。Therefore, when the spring portion 4b tries to abnormally deform in the plate thickness direction in response to the CXL moment, the 4G
, 4d, and de contact the outer periphery of the inner cutter support 16 to receive the moment, and work to prevent abnormal deformation. Because of this action, the arm between the corresponding contact portion 4e and the blade portion 4i has a stronger spring than the spring portion 4b. but,
The corresponding contact portions 4c, 4d, and 4e are at the apparent center of deflection P when the spring portion 4b is deflected by the outer cutter 5 (when the cutting edge of the inner cutter is deflected by the outer cutter, approximately The inner cutter is supported during normal deflection with the outer cutter 5 because it is only a distance F in the direction away from the blade part than the position shown by the broken line in FIG. 4c, 4d, 4
Due to the strong spring connected to g, the contact pressure between the outer cutter and the inner cutter does not increase by 1, and since the distance from the deflection center point P is small, the upward displacement during the deflection The spring force of the inner blade body during normal deflection is only due to the spring portion 4b, and as described above, the current consumption and
C above when the rotation speed can be maintained at a constant level and the outer blade is deformed due to pressure from the skin during shaving or when the outer blade is deformed due to pressure from the skin during shaving.
It will not be abnormally deformed or damaged even under even larger loads. As mentioned above, this is achieved by providing both the spring means 4b that brings the outer cutter 5 and the inner cutter 4 into close contact with each other, and the inner cutter 4 or the spring means when an overload is applied. The spring means is advantageous in that it does not operate unless a large load is applied, and is one of the features of the present invention. As shown in FIG. 5, the planar shape of the inner cutter according to an embodiment of the present invention has a long width of the cutting edge and extends vertically.
Because it becomes a cantilever beam due to
Therefore, in one embodiment of the present invention, care is taken to receive the moment due to this resistance from two places, the contact parts 4c and 48, and the central part of the blade part 4i is This resistance is received by the springs 4b located on the left and right, but on the other hand, the distance from both ends of the blade 4t is long<4
Since the bending moment applied to the vicinity of the central part of part i is also large, this part is also configured to receive the moment of abnormal deformation at the two contact parts 4d and 4C. If the portion 4i were not vertically long, it would be necessary to increase the number of abutting portions, but for the above reason, at least six locations near both ends and near the center are required. As an example of
The inner cutter 20, in which the inner cutter body 4 is arranged in the tangential direction of the outer circumferential circle of the inner cutter support 16, which is concentric with the drive shaft B, which is the rotation center of the inner cutter 20, absorbs centrifugal force acting on the blade portion 4i during rotation. As a result, the inner blade 4 attempts to move away from the center of rotation, but at this time, the tip of the 4C portion of the inner blade 4 comes into contact with the inner surface of the stopper 14, thereby preventing it from moving further away. Therefore, even if the inner cutter 20 is rotated at high speed, the position of the cutting edge of the inner cutter body is maintained at an appropriate position, and the contact pressure with the outer cutter 5 becomes stronger.
There is no occurrence of an abnormality at the starting point of the amount of engagement with the outer cutter due to the zero radius becoming too large.

又、本発明では、第５図に示すとおり各ブロックの刃と
も固定部４αの前記内刃支持具に巻き付けＺ際の円周方
向の両側に連結部を設けていることも特徴である。例え
ば、複数ブロックが連結部４ｊにて連りた内刃体４を設
けその最初のブロックと最終ブロックは隣接ブロック側
のみ連結部が存在し１反対側には連結部がなかった場合
、すなわち・第５図の４ｆ、４１が存在しなかった場合
には、この最初のブロックと最後のブロックにおいては
連結部４ｊのバネ力の影響により正常な前記接線方向へ
刃部が伸びず、各ブロックの刃先を結ぶ多角形が正多角
形とならず、第８図に示す形状となり、外刃５への内刃
体の接触タイミングが不連続となり振動・異常音の発生
原因となる。このため、本発明の一実施例では、最初と
最後の各ブロックにも固定部４ａの円周方向の両側に連
結部を設けるため４／、４Ｓｉ’を配している。こうす
ることにより各ブロックにおける連結部４ｊの影響を４
ｆ若しくは４？にて相殺することができ、第７図に示す
とおり各刃先を結ぶときの多角形を正多角形とすること
ができ、前記異°呂３をなくすることができる。又、こ
の際、小スペースを有効に利用し、前記刃部４　ｚ　、
バネ部４ｂをムリなく設計するために該４ｆ、４７部を
固定するために内刃支持具１６に設けるピンを共通に使
用することが望ましい。このため該４ｆ、４Ｙ部は同一
ピンに重合して嵌合することとした。又、こうする場合
、内刃２０の重置バランスをとる必要があるため、該４
／、４ｇ部の丁度対向する位置に４ｈの連結部を設けた
ことも本発明の特徴の１つである。Another feature of the present invention is that, as shown in FIG. 5, the blades of each block are provided with connecting portions on both sides in the circumferential direction when they are wound around the inner blade support of the fixed portion 4α. For example, if an inner blade body 4 is provided in which a plurality of blocks are connected at a connecting part 4j, and the first block and the last block have a connecting part only on the adjacent block side and there is no connecting part on the opposite side, that is, If 4f and 41 in Fig. 5 did not exist, the blade portions of the first and last blocks would not extend in the normal tangential direction due to the influence of the spring force of the connecting portion 4j, and the blades of each block would not extend. The polygon connecting the cutting edges is not a regular polygon, but becomes the shape shown in FIG. 8, and the contact timing of the inner cutter body with the outer cutter 5 becomes discontinuous, causing vibrations and abnormal noises. For this reason, in one embodiment of the present invention, 4/ and 4Si' are arranged in each of the first and last blocks to provide connecting portions on both sides of the fixing portion 4a in the circumferential direction. By doing this, the influence of the connecting portion 4j in each block is reduced to 4
f or 4? As shown in FIG. 7, the polygon connecting each cutting edge can be made a regular polygon, and the above-mentioned irregularity 3 can be eliminated. Moreover, at this time, the small space is effectively utilized and the blade portions 4z,
In order to design the spring portion 4b efficiently, it is desirable to use a pin provided in the inner cutter support 16 in common to fix the spring portions 4f and 47. For this reason, it was decided that the 4f and 4Y parts overlap and fit on the same pin. In addition, in this case, it is necessary to balance the stacking of the inner cutters 20, so
Another feature of the present invention is that a 4h connecting portion is provided at a position exactly opposite to the / and 4g portions.

こうすることにより、重量バランスの良く、又変形多角
形による振動、騒音の少ない電気がみそりの内刃を提供
できるものである。　又、連結部４ｊ部は内刃支持具１
３の外周に容易に巻きつけ可能であることが組立牲がら
要求されるため・そのバネ幅は前記バネ部４ｂよりも細
いものとなるが、こうした場合、内刃材料の劣化、若し
くは使用者の内刃掃除の際の取り扱いにより変形、破壊
を起こす可能性がある。そこで、掃除の際に指、掃除用
プラン等が直接触れない様にするために該−４ｅ部を前
記内刃体の保持部材である止め具１４で覆ったことも本
発明の特徴であり、前記した効果がある他、万−該４ｅ
部が破損したとしても、外刃５の前記孔を通して突出防
止する効果を有し危険防止に大きな効果を有する。By doing so, it is possible to provide an electric razor inner cutter with good weight balance and with less vibration and noise due to the deformed polygon. In addition, the connecting portion 4j is connected to the inner blade support 1.
Since it is required for assembly that it can be easily wrapped around the outer circumference of the inner blade 4b, the spring width is narrower than the spring part 4b, but in such a case, the inner blade material may deteriorate or the user may There is a possibility of deformation or destruction due to handling when cleaning the inner blade. Therefore, it is also a feature of the present invention that the -4e portion is covered with a stopper 14 that is a holding member of the inner blade body to prevent direct contact with fingers, cleaning plan, etc. during cleaning. In addition to the above-mentioned effects, 10,000-4e
Even if the outer cutter 5 is damaged, it has the effect of preventing it from protruding through the hole of the outer cutter 5, and has a great effect on preventing danger.

以上説明した様に本発明は幾多の利点を有す。As explained above, the present invention has many advantages.

これらは前述した配置によるものである。本発明の一実
施例として６枚の刃となるブロックを内刃支持具１６の
外周円に接する如く巻き付けて固定する例を述べたが、
これに限ったものでなく、数枚の刃で構成し、該刃を多
角形にて形成した内刃支持具の面に固定したとしても本
発明の主旨は達成できる。又、内刃支持具１３を用いず
、内刃支持具１３のスペースをモーターに置換し、該モ
ーターのケースに前述の内刃体を巻き付けて、前述の効
果を出せる他、止め具、１４を内刃支持具１６と一体的
に構成し、又は該止め具の作用を内刃体４の一部を曲げ
加工する等して構成することも可能である。These are according to the arrangement described above. As an example of the present invention, an example was described in which six blocks serving as blades are wrapped and fixed so as to be in contact with the outer circumference of the inner blade support 16.
The purpose of the present invention is not limited to this, but the gist of the present invention can be achieved even if the blade is composed of several blades and the blades are fixed to the surface of a polygonal inner blade support. In addition, the inner blade support 13 is not used, the space of the inner blade support 13 is replaced with a motor, and the above-mentioned inner blade body is wound around the case of the motor to achieve the above-mentioned effect. It is also possible to configure it integrally with the inner cutter support 16, or to configure the function of the stopper by bending a part of the inner cutter body 4.

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

第１図は本発明の一実施例による内刃を採用した電気か
みそりの正面側からみた断面図。 第２図は第１図のＡ−Ａ断面図。 第６図は前記内刃の分解拡大斜視図。 第４図は前記内刃の正面側から視た断面図。 第５図は前記内刃を構成する内刃体の平面図。 第６図は該内刃体の側断面図。 第７図は前記内刃体の撓み状態と固定状態を示す内刃側
断面図。 第８図は本発明の一実施例による内刃体の４ｆ、４？部
の連結部がなかった状態の内刃体固定の梯子を示す内刃
側断面図。 全図中、 １・・本体ケース ２・・・外刃枠 ３・・・駆動軸 ４・・・内刃体 ５・・・外刃体 ２０（・・内刃 以　上 出願人　株式会社諏訪精工舎 代理人　弁理士　最上　務 ＡｑＬ− 第　１　口 １１ 彩２回 χ４回FIG. 1 is a cross-sectional view of an electric shaver that employs an inner cutter according to an embodiment of the present invention, viewed from the front side. FIG. 2 is a sectional view taken along line AA in FIG. FIG. 6 is an exploded, enlarged perspective view of the inner cutter. FIG. 4 is a sectional view of the inner cutter viewed from the front side. FIG. 5 is a plan view of the inner cutter body constituting the inner cutter. FIG. 6 is a side sectional view of the inner blade. FIG. 7 is a sectional view of the inner blade side showing the inner blade body in a bent state and a fixed state. FIG. 8 shows 4f, 4? of the inner blade body according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the inner blade side showing the ladder with the inner blade body fixed without the connecting portion. In the entire diagram, 1...Main body case 2...Outer cutter frame 3...Drive shaft 4...Inner cutter 5...Outer cutter 20 (...Inner cutter and above) Applicant: Suwa Seiko Co., Ltd. Agent Patent Attorney Mogami AqL- 1st Part 11 Aya 2 times x4 times

Claims (1)

【特許請求の範囲】 １　内刃の回転軸の同心円に対して接線となる方向に設
置された内刃体は、固定部、バネ部、刃部より成り、該
刃部又はバネ部の一部に当接部を設け、該当接部を保持
部材に当接可能に配し、両者の当接により前記刃部の安
定化を図る構造としたことを特徴とする電気かみそりの
内刃０２　前記当接部を前記バネ部の撓み動作の際の見
かけ上の回転中心の近傍に配したことを特徴とする特許
請求範囲第１項記載の電気かみそりの内刃０６　前記当
接部を前記刃部の両端部近傍を含む３ケ所以上設けたこ
とを特徴とする特許請求の範囲第１項記載の電気かみそ
りの内刃０ ４　内刃の回転軸の同心円に対して接線となる方向に配
置された内刃体は固定部、バネ部、刃部より成り、該バ
ネ部は複数本のバネにて構成され、該バネの軸線は回転
方向に対して傾いていることを特徴とする電気かみそり
の内刃＠ ５、　前記各バネの軸線が平行でない様に配置されてい
ることを特徴とする特許請求の範囲第４項記載の電気か
みそりの内刃。 ６　内刃の回転軸の同心円に対して接線となる方向に配
置された内刃体は固定部、バネ部、刃部。 連結部より成り、該連結部は各々の固定部の円周方向の
両側に配置されていることを特徴とする電気かみそりの
内刃。 ７　前記連結部の両９１１４部は互いに重合しているこ
とを特徴とする特許請求の範囲第６項記載の電気かみそ
りの内刃。 ８　内刃の回転軸の同心円に対して接線となる方向に設
置された内刃体は固定部、バネ部、刃部。 連結部より成り、該連結部の上方に保持部材を配置した
ことを特徴とする電気かみそりの内刃。[Claims] 1. The inner cutter body installed in a direction tangential to the concentric circle of the rotation axis of the inner cutter consists of a fixed part, a spring part, and a blade part, and a part of the blade part or the spring part Inner blade 02 of an electric shaver, characterized in that the inner blade 02 of the electric shaver has a structure in which a contact portion is provided at the holding member, the contact portion is disposed so as to be able to contact the holding member, and the blade portion is stabilized by contact between the two. The inner blade 06 of the electric shaver according to claim 1, characterized in that the contact portion is disposed near the apparent center of rotation of the spring portion when the spring portion bends. The inner cutter of the electric shaver according to claim 1, characterized in that the inner cutter is provided at three or more locations including the vicinity of both ends. An inner blade of an electric shaver, characterized in that the blade body consists of a fixed part, a spring part, and a blade part, the spring part is made up of a plurality of springs, and the axis of the spring is inclined with respect to the rotation direction. @5. The inner cutter of an electric shaver according to claim 4, wherein the axes of the respective springs are arranged so as not to be parallel to each other. 6. The inner cutter body arranged in a direction tangential to the concentric circle of the rotation axis of the inner cutter has a fixed part, a spring part, and a blade part. An inner cutter for an electric shaver, comprising a connecting part, the connecting parts being arranged on both sides of each fixed part in the circumferential direction. 7. The inner cutter of an electric shaver according to claim 6, wherein both 9114 portions of the connecting portion are overlapped with each other. 8 The inner blade body installed in a direction tangential to the concentric circle of the rotation axis of the inner blade is a fixed part, a spring part, and a blade part. An inner blade for an electric shaver, comprising a connecting part, and a holding member disposed above the connecting part.