JP4807738B2

JP4807738B2 - Electric razor

Info

Publication number: JP4807738B2
Application number: JP2006075430A
Authority: JP
Inventors: 伸紀八尋; 幸太郎岩倉
Original assignee: Kyushu Hitachi Maxell Ltd
Current assignee: Kyushu Hitachi Maxell Ltd
Priority date: 2006-03-17
Filing date: 2006-03-17
Publication date: 2011-11-02
Anticipated expiration: 2026-03-17
Also published as: JP2007244769A

Description

本発明は、往復動式の切断刃を備えている電気かみそりに関する。切断刃はスリット刃、櫛歯、または鋸状刃を切断要素にして構成してある。 The present invention relates to an electric razor having a reciprocating cutting blade. The cutting blade is constituted by using a slit blade, a comb tooth, or a saw blade as a cutting element.

本発明では、切断刃を１個のユニット部品として構成するが、この種の切断刃の基本構造は公知である（特許文献１参照）。そこでは、外刃および内刃と、外刃の両側端に係合固定される左右一対の側端ピースと、内刃を支持する内刃ホルダーと、内刃を押し上げ付勢するばねなどで切断刃を構成している。特許文献２にも同様の切断刃が開示してある。 In the present invention, the cutting blade is configured as one unit component, and the basic structure of this type of cutting blade is known (see Patent Document 1). There, the outer blade and the inner blade, a pair of left and right side end pieces that are engaged and fixed to both ends of the outer blade, an inner blade holder that supports the inner blade, and a spring that pushes and biases the inner blade are cut. It constitutes a blade. Patent Document 2 discloses a similar cutting blade.

特開２００１−６２１６３号公報（段落番号００２３、図１３）Japanese Patent Laying-Open No. 2001-62163 (paragraph number 0023, FIG. 13) 特開２００４−２４２９６６号公報（段落番号００５５、図１５）Japanese Patent Laying-Open No. 2004-242966 (paragraph number 0055, FIG. 15)

特許文献１の切断刃では、内刃ホルダーとばねとが組み付けられた内刃を外刃の内面に嵌め込み、外刃の両側に側端ピースを係合装着することにより、ユニット部品化された切断刃が得られる。しかし、内刃ホルダーの前後面に設けた４個の溶着ピンを、内刃の溶着穴に係合したのち、ピン先端を溶融変形させて内刃を固定する必要があるので、組立に煩雑で余分な手間が掛かる。特許文献２の切断刃では、側端ピースの前後面に設けた４個の溶着ピンを溶融変形させて外刃を固定するので、さらに余分な手間が掛かる。 In the cutting blade of Patent Document 1, the inner blade in which the inner blade holder and the spring are assembled is fitted into the inner surface of the outer blade, and the side end pieces are engaged and mounted on both sides of the outer blade, so that the cutting is unitized. A blade is obtained. However, since it is necessary to fix the inner blade by melting and deforming the tip of the pin after engaging the four welding pins provided on the front and rear surfaces of the inner blade holder with the welding holes of the inner blade, the assembly is complicated. Extra time is required. In the cutting blade of Patent Document 2, since the four welding pins provided on the front and rear surfaces of the side end piece are melted and deformed to fix the outer blade, additional labor is required.

本発明の目的は、組立対象となる部品どうしを、所定の手順に従って単に係合固定するだけで切断刃を構成でき、従来のこの種の切断刃に比べて、組立に要する手間と時間を削減して、製造コストを削減できる電気かみそりを提供することにある。本発明の目的は、各部品を所定の手順で係合して構成した切断刃であるにもかかわらず、組立対象となる部品どうしを正確にしかも強固に連結固定できる切断刃を備えた電気かみそりを提供することにある。 It is an object of the present invention to construct a cutting blade by simply engaging and fixing components to be assembled according to a predetermined procedure, thereby reducing the labor and time required for assembly compared to this type of conventional cutting blade. Then, it is providing the electric shaver which can reduce manufacturing cost. An object of the present invention is to provide an electric shaver provided with a cutting blade capable of accurately and firmly connecting and fixing components to be assembled despite the fact that the cutting blade is constituted by engaging each component in a predetermined procedure. Is to provide.

本発明の電気かみそりは、かみそりヘッド５に設けた切断刃１２が、樋体状に形成される左右横長の外刃５１と、外刃５１の内面に沿って摺接する内刃５２と、外刃５１の両側に固定される左右の側端ピース５３と、内刃５２を支持する内刃ホルダー５４と、内刃５２を外刃５１へ向かって付勢するばね５５とを備えている。外刃５１および内刃５２は、それぞれ刃部分６０・７０と、刃部分６０・７０を支持する支持部分６１・７１とを一体に備えている。外刃５１の支持部分６１の両端前後には、それぞれ側端ピース５３に差し込み係合される連結爪６３が一体に形成してある。側端ピース５３の前後面に設けた横溝７７に連結爪６３を圧入係合して、外刃５１と側端ピース５３とを一体化する。 In the electric razor of the present invention, the cutting blade 12 provided in the razor head 5 has a laterally long outer blade 51 formed in a casing shape, an inner blade 52 that is in sliding contact with the inner surface of the outer blade 51, and an outer blade. 51, left and right side end pieces 53 fixed to both sides of the 51, an inner blade holder 54 that supports the inner blade 52, and a spring 55 that urges the inner blade 52 toward the outer blade 51. The outer blade 51 and the inner blade 52 are integrally provided with blade portions 60 and 70 and support portions 61 and 71 that support the blade portions 60 and 70, respectively. Connection claws 63 that are inserted into and engaged with the side end pieces 53 are integrally formed on both ends of the support portion 61 of the outer blade 51. The connecting claw 63 is press-fitted into a lateral groove 77 provided on the front and rear surfaces of the side end piece 53 so that the outer blade 51 and the side end piece 53 are integrated.

連結爪６３の近傍に、連結爪６３の差し込み限界を規定する位置決め部６４を形成し、横溝７７の近傍に、位置決め部６４を受け止める規制壁７９を形成する。 A positioning portion 64 that defines the insertion limit of the connecting claw 63 is formed in the vicinity of the connecting claw 63, and a regulating wall 79 that receives the positioning portion 64 is formed in the vicinity of the lateral groove 77.

外刃５１の刃部分６０の上面両側に設けた脚片６５を、側端ピース５３の上面に設けた刃受面８１で受け止め支持する。 The leg pieces 65 provided on both upper surfaces of the blade portion 60 of the outer blade 51 are received and supported by the blade receiving surfaces 81 provided on the upper surface of the side end piece 53.

内刃５２は、内刃５２とほぼ同じ左右幅に形成した内刃ホルダー５４で支持する。内刃ホルダー５４の両端に下向きに開口するスライド溝８８を形成する。両側端ピース５３の対向面のそれぞれに、前記スライド溝８８と係合して、内刃ホルダー５４を左右スライド自在に案内するガイド片７６を形成する。 The inner blade 52 is supported by an inner blade holder 54 formed in substantially the same lateral width as the inner blade 52. Slide grooves 88 that open downward are formed at both ends of the inner blade holder 54. A guide piece 76 that engages with the slide groove 88 and guides the inner blade holder 54 so as to be slidable to the left and right is formed on each of the opposing surfaces of the side end pieces 53.

内刃ホルダー５４の両端に、上向きに開口する係合溝８７を形成する。内刃５２の両端に、下向きに折れ曲がる連結爪７１を設ける。連結爪７１を係合溝８７に圧嵌係合して、内刃５２を内刃ホルダー５４と一体化する。 Engaging grooves 87 that open upward are formed at both ends of the inner blade holder 54. Connection claws 71 that bend downward are provided at both ends of the inner blade 52. The connecting claw 71 is press-fitted into the engaging groove 87 to integrate the inner blade 52 with the inner blade holder 54.

左右一対の側端ピース５３どうしを、側端ピース５３に下面側から係合装着される補強枠５６で橋絡する。補強枠５６は、前後壁９１と、前後壁９１の下縁複数箇所を繋ぐ橋絡壁９２と、前後壁９１の両端に設けられる連結片９３と、連結片９３に連続して内向きに折り曲げられる弾性爪９４とを一体に備えている。補強枠５６を側端ピース５３に係合装着した状態において、弾性爪９４を側端ピース５３の係合凹部７８に落とし込み係合させて、側端ピース５３と補強枠５６を一体化する。 The pair of left and right side end pieces 53 are bridged by a reinforcing frame 56 that is engaged and attached to the side end piece 53 from the lower surface side. The reinforcing frame 56 is bent inward in succession to the front and rear walls 91, a bridge wall 92 that connects a plurality of lower edge portions of the front and rear walls 91, connection pieces 93 provided at both ends of the front and rear walls 91, and the connection pieces 93. The elastic claw 94 is integrally provided. In a state where the reinforcing frame 56 is engaged with and attached to the side end piece 53, the elastic claw 94 is dropped into the engaging recess 78 of the side end piece 53 and engaged to integrate the side end piece 53 and the reinforcing frame 56.

補強枠５６の前後壁９１の両側端に橋絡壁９２が設けられており、側端ピース５３と補強枠５６を一体化した状態において、橋絡壁９２に形成した係合穴９５を側端ピース５３の下面に突設したピン１０１に係合させる。 Bridge walls 92 are provided at both ends of the front and rear walls 91 of the reinforcing frame 56, and in the state where the side end piece 53 and the reinforcing frame 56 are integrated, the engagement holes 95 formed in the bridge wall 92 are connected to the side ends. Engage with the pin 101 protruding from the lower surface of the piece 53.

補強枠５６に、内刃ホルダー５４を介して内刃５２を外刃５１に押し付け付勢するばね５５を一体に形成する。 The reinforcing frame 56 is integrally formed with a spring 55 that presses and biases the inner blade 52 against the outer blade 51 via the inner blade holder 54.

内刃ホルダー５４に設けたスライド溝８８の形成領域に臨んでばね５５を配置する。以て、ばね５５の遊端寄りに設けたばね爪９７を、スライド溝８８を前後に挟む溝壁８９に弾性接当させる。 The spring 55 is arranged facing the formation region of the slide groove 88 provided in the inner blade holder 54. Accordingly, the spring pawl 97 provided near the free end of the spring 55 is elastically contacted to the groove wall 89 that sandwiches the slide groove 88 in the front-rear direction.

切断刃１２の全体を、外刃ホルダー１６に設けた受枠２３と補強枠５６との間に配置したフロートばね５７で押し上げ付勢する。補強枠５６の下面にフロートばね５７の一端を受け止めるばね受突起９８を形成する。 The entire cutting blade 12 is pushed up and biased by a float spring 57 disposed between the receiving frame 23 provided on the outer blade holder 16 and the reinforcing frame 56. A spring receiving projection 98 for receiving one end of the float spring 57 is formed on the lower surface of the reinforcing frame 56.

外刃５１の支持部分６１と補強枠５６の前後壁９１とを、上下に近接配置する。 The support portion 61 of the outer blade 51 and the front and rear walls 91 of the reinforcing frame 56 are arranged close to each other in the vertical direction.

本発明においては、左右横長の外刃５１と内刃５２、および外刃５１の両側に固定される側端ピース５３と、内刃５２を支持する内刃ホルダー５４と、内刃５２を押し上げ付勢するばね５５とで切断刃１２を構成し、外刃５１の支持部分６１の両端前後に設けた連結爪６３を、側端ピース５３の横溝７７に圧入係合することにより、外刃５１と側端ピース５３とを一体化した。このように、本発明の切断刃１２によれば、外刃５１の連結爪６３を側端ピース５３の横溝７７に圧入係合するだけで、外刃５１と側端ピース５３とを一体化でき、従来のこの種の切断刃に比べて組立に要する手間を大幅に軽減し、その分だけ切断刃１２の組立コストを削減できる。組み付け状態における連結爪６３は横溝７７の溝壁に食い込んで、両者６３・７７の結合状態を維持するので、以後の組立過程で外刃５１と側端ピース５３とが分離するのを確実に防止できる。 In the present invention, the laterally long outer blade 51 and the inner blade 52, the side end piece 53 fixed to both sides of the outer blade 51, the inner blade holder 54 that supports the inner blade 52, and the inner blade 52 are pushed up. The cutting blade 12 is constituted by the spring 55 to be energized, and the connecting claw 63 provided at both front and rear ends of the support portion 61 of the outer blade 51 is press-fitted into the lateral groove 77 of the side end piece 53, thereby The side end piece 53 was integrated. Thus, according to the cutting blade 12 of the present invention, the outer blade 51 and the side end piece 53 can be integrated only by press-fitting and engaging the connecting claw 63 of the outer blade 51 with the lateral groove 77 of the side end piece 53. Compared to this type of conventional cutting blade, the labor required for assembly can be greatly reduced, and the assembly cost of the cutting blade 12 can be reduced accordingly. Since the coupling claw 63 in the assembled state bites into the groove wall of the lateral groove 77 and maintains the coupled state of both 63 and 77, it is reliably prevented that the outer blade 51 and the side end piece 53 are separated in the subsequent assembly process. it can.

外刃５１と側端ピース５３を一体化した状態において、連結爪６３の近傍に設けた位置決め部６４を側端ピース５３の規制壁７９で受け止めて、連結爪６３の差し込み限界を規定できるようにすると、連結爪６３が過剰に圧入され、あるいは圧入量が不足するのを確実に防止して、外刃５１と側端ピース５３とを常に適正に組み立てることができる。 In a state where the outer blade 51 and the side end piece 53 are integrated, the positioning portion 64 provided in the vicinity of the connection claw 63 is received by the restriction wall 79 of the side end piece 53 so that the insertion limit of the connection claw 63 can be defined. Then, it is possible to reliably prevent the connecting claw 63 from being excessively press-fitted or the press-fitting amount from being insufficient, and to always assemble the outer blade 51 and the side end piece 53 appropriately.

外刃５１の上面両側に設けた脚片６５を、側端ピース５３の上面に設けた刃受面８１で受け止め支持すると、脚片６５と連結爪６３とで側端ピース５３の組み付け部分を上下に挟持して、外刃５１と側端ピース５３とを上下に位置決めした状態で一体化し、外刃５１を適正に支持できる。外刃５１と側端ピース５３との連結強度も向上できる。 When the leg pieces 65 provided on both sides of the upper surface of the outer blade 51 are received and supported by the blade receiving surface 81 provided on the upper surface of the side end piece 53, the assembly portion of the side end piece 53 is moved up and down by the leg piece 65 and the connecting claw 63. The outer cutter 51 and the side end piece 53 are integrated in a state where the outer cutter 51 and the side end piece 53 are vertically positioned, so that the outer cutter 51 can be properly supported. The connection strength between the outer blade 51 and the side end piece 53 can also be improved.

外刃５１、内刃５２、および側端ピース５３の三者を組み付けた状態において、内刃ホルダー５４のスライド溝８８を側端ピース５３に設けたガイド片７６で左右スライド自在に案内すると、内刃５２と外刃５１の前後方向の中心位置を正しく一致させて、内刃５２の切刃６９が外刃５１の切刃５９に対して片当りするのを規制でき、同時に内刃５１が蛇行しながら往復動するのを規制できるので、外刃５１と内刃５２の切刃５９・６９によるひげの切断をより効果的に行うことができる。 In the state where the outer blade 51, the inner blade 52, and the side end piece 53 are assembled, when the slide groove 88 of the inner blade holder 54 is guided by the guide piece 76 provided on the side end piece 53 so as to be slidable left and right, The center positions of the blade 52 and the outer blade 51 in the front-rear direction can be correctly matched to restrict the cutting edge 69 of the inner blade 52 from being in contact with the cutting blade 59 of the outer blade 51, and at the same time the inner blade 51 meanders. Since the reciprocation can be restricted while cutting the whiskers with the cutting blades 59 and 69 of the outer blade 51 and the inner blade 52, the hair can be cut more effectively.

内刃５２を、内刃５２とほぼ同じ左右幅に形成した内刃ホルダー５４で支持するので、内刃５２の切刃６９を外刃５１の切刃５９に対して常に均一に密着させることができ、これにより、ひげ切断作用が切断刃１２の幅方向でばらつくのを解消できる。外刃５１、内刃５２、側端ピース５３の三者を組み付けた状態においては、内刃５２が外刃５１から抜け出るのをガイド片７６で規制して、以後の組立過程における切断刃１２の取り扱いを容易化できる利点もある。 Since the inner blade 52 is supported by the inner blade holder 54 formed to have substantially the same left and right width as the inner blade 52, the cutting blade 69 of the inner blade 52 can always be in close contact with the cutting blade 59 of the outer blade 51. This makes it possible to eliminate the variation in the whisker cutting action in the width direction of the cutting blade 12. In a state where the outer blade 51, the inner blade 52, and the side end piece 53 are assembled, the guide blade 76 restricts the inner blade 52 from coming out of the outer blade 51, and the cutting blade 12 in the subsequent assembly process is controlled. There is also an advantage that handling can be facilitated.

内刃５２の両端に設けた連結爪７１を、内刃ホルダー５４の両端に設けた係合溝８７に圧嵌係合して、内刃５２を内刃ホルダー５４に固定する内刃構造によれば、かしめ処理などの煩雑な手間を省いて、内刃５２を内刃ホルダー５４に固定でき、その分だけ切断刃１２の組立に要する工数を少なくできる。また、連結爪７１の近傍以外の殆どの刃部分が厚み方向へ変位できる状態で内刃５２を支持できるので、内刃５２の全体を外刃５１に対して常に密着させて、ひげの切断を効果的に行うことができる。 According to the inner blade structure in which the connecting claws 71 provided at both ends of the inner blade 52 are press-fitted into engagement grooves 87 provided at both ends of the inner blade holder 54 to fix the inner blade 52 to the inner blade holder 54. For example, it is possible to fix the inner blade 52 to the inner blade holder 54 by omitting troublesome processes such as caulking, and the man-hour required for assembling the cutting blade 12 can be reduced accordingly. In addition, since the inner blade 52 can be supported in a state in which most of the blade portions other than the vicinity of the coupling claw 71 can be displaced in the thickness direction, the entire inner blade 52 is always in close contact with the outer blade 51 to cut the whiskers. Can be done effectively.

前後壁９１と、前後壁９１を繋ぐ橋絡壁９２と、前後壁９１の両端に設けられる連結片９３、および弾性爪９４とで補強枠５６を構成し、左右の側端ピース５３を補強枠５６で橋絡する切断刃構造によれば、補強枠５６を付加した分だけ、外刃５１と左右の側端ピース５３との結合体の構造強度を増強して、強い外力が加わるような場合に、外刃５１が曲げ変形され、あるいはねじれ変形するのを確実に防止できる。これにより、常に良好な切れ味を発揮できる切断刃１２が得られる。構造強度を増強できる分だけ外刃５１の厚みを薄くして、切断刃１２の切れ味を向上することも可能となる。 The front and rear walls 91, the bridge wall 92 connecting the front and rear walls 91, the connecting pieces 93 provided at both ends of the front and rear walls 91, and the elastic claws 94 constitute a reinforcing frame 56, and the left and right side end pieces 53 are connected to the reinforcing frames. According to the cutting blade structure that bridges at 56, when the reinforcing frame 56 is added, the structural strength of the combined body of the outer blade 51 and the left and right side end pieces 53 is increased, and a strong external force is applied. In addition, the outer blade 51 can be reliably prevented from being bent or torsionally deformed. Thereby, the cutting blade 12 which can always exhibit a good sharpness is obtained. It is possible to improve the sharpness of the cutting blade 12 by reducing the thickness of the outer blade 51 by an amount that can increase the structural strength.

左右の側端ピース５３に補強枠５６を組み付けた状態において、前後壁９１の両端に設けた連結片９３で側端ピース５３の前後面を挟み保持し、さらに、弾性爪９４を側端ピース５３の係合凹部７８に落とし込み係合させる切断刃構造によれば、側端ピース５３を下方から圧嵌係合するだけで、補強枠５６を側端ピース５３に固定でき、一連の組立作業に要する手間と時間を削減して、切断刃１２の製造コストを削減できる。しかも、各部品を所定の手順で係合して構成した切断刃１２であるにもかかわらず、組立対象となる部品どうしを正確にしかも強固に連結固定できる。 In a state where the reinforcing frame 56 is assembled to the left and right side end pieces 53, the front and rear surfaces of the side end piece 53 are sandwiched and held by the connecting pieces 93 provided at both ends of the front and rear walls 91, and the elastic claw 94 is further attached to the side end piece 53. According to the cutting blade structure that drops and engages the engaging recess 78, the reinforcing frame 56 can be fixed to the side end piece 53 only by press-fitting and engaging the side end piece 53 from below, which is necessary for a series of assembly operations. The labor and time can be reduced, and the manufacturing cost of the cutting blade 12 can be reduced. In addition, despite the cutting blade 12 configured by engaging each component in a predetermined procedure, the components to be assembled can be accurately and firmly connected and fixed.

側端ピース５３に補強枠５６を組み付けた状態において、橋絡壁９２に形成した係合穴９５を側端ピース５３の下面に突設したピン１０１に係合させる切断刃構造によれば、補強枠５６の側端が左右方向へずれ動くのを確実に防止して、外刃５１と側端ピース５３と補強枠５６の三者をさらに強固に一体化できる。 According to the cutting blade structure in which the engagement hole 95 formed in the bridging wall 92 is engaged with the pin 101 protruding from the lower surface of the side end piece 53 in the state where the reinforcing frame 56 is assembled to the side end piece 53. The side edges of the frame 56 can be reliably prevented from shifting in the left-right direction, and the outer blade 51, the side edge piece 53, and the reinforcing frame 56 can be more firmly integrated.

内刃５２を押し付け付勢するためのばね５５が補強枠５６と一体に形成してあると、ばね５５が独立部品として形成してある場合に比べて、部品点数および組立の手間をそれぞれ減らすことができるうえ、ばね５５と内刃５２の位置のばらつき、および内刃５２に作用するばね圧のばらつきを解消でき、その分だけ内刃５２を外刃５１に対してより適正に密着させて切断刃１２の切れ味を向上できる。 If the spring 55 for pressing and urging the inner blade 52 is formed integrally with the reinforcing frame 56, the number of parts and the labor for assembly are reduced compared to the case where the spring 55 is formed as an independent part. In addition, the variation in the positions of the spring 55 and the inner blade 52 and the variation in the spring pressure acting on the inner blade 52 can be eliminated, and the inner blade 52 is more appropriately brought into close contact with the outer blade 51 for cutting. The sharpness of the blade 12 can be improved.

ばね５５の遊端寄りに設けたばね爪９７を、スライド溝８８を前後に挟む溝壁に弾性接当させる切断刃構造によれば、スライド溝８８の溝幅の分だけばね爪９７と内刃ホルダー５４との摺接抵抗を小さくでき、電気かみそりの動力損を低減できる。 According to the cutting blade structure in which the spring claw 97 provided near the free end of the spring 55 is elastically brought into contact with the groove wall sandwiching the slide groove 88 in the front and rear, the spring claw 97 and the inner blade holder by the groove width of the slide groove 88. The sliding contact resistance with 54 can be reduced, and the power loss of the electric razor can be reduced.

補強枠５６の下面に、フロートばね５７の一端を受け止めるばね受突起９８を一体に形成すると、その分だけ部品点数を減らすことができるうえ、フロートばね５７のばね力を補強枠５６に対して適正にばらつきなく作用させることができる。長期使用時に、ばね受突起９８がフロートばね５７で削られて摩滅することもない。 If the spring receiving projection 98 for receiving one end of the float spring 57 is integrally formed on the lower surface of the reinforcing frame 56, the number of parts can be reduced by that amount, and the spring force of the float spring 57 can be appropriately applied to the reinforcing frame 56. It can be made to act without variation. During long-term use, the spring receiving protrusion 98 is not scraped by the float spring 57 and is not worn away.

外刃５１の支持部分６１と補強枠５６の前後壁９１とを上下に近接配置する切断刃構造によれば、支持部分６１と補強枠５６とが近接している分だけ、外刃５１と左右の側端ピース５３との結合体の構造強度をさらに効果的に増強し、切断刃１２の構造強度を向上できる。本項（００２９項）における近接配置とは、外刃５１の支持部分６１と補強枠５６の前後壁９１とが当接している場合も含むこととする。 According to the cutting blade structure in which the support portion 61 of the outer blade 51 and the front and rear walls 91 of the reinforcing frame 56 are arranged close to each other in the vertical direction, the outer blade 51 and the left and right portions are moved to the extent that the support portion 61 and the reinforcing frame 56 are close to each other. The structural strength of the combined body with the side end piece 53 can be further effectively enhanced, and the structural strength of the cutting blade 12 can be improved. The close arrangement in this section (0029 section) includes the case where the support portion 61 of the outer blade 51 and the front and rear walls 91 of the reinforcing frame 56 are in contact with each other.

（実施例）図１ないし図９は本発明に係る電気かみそりの実施例を示す。図２において電気かみそりは本体ケース１と、本体ケース１に組み付けられる作動ユニットと、ケース後面に組み付けられるトリマーユニット（図示していない）などで構成してある。本体ケース１の前面上下には、モーター起動用のスイッチノブ２と、電気かみそりの運転状態を表示する表示灯３が設けてある。 (Embodiment) FIGS. 1 to 9 show an embodiment of an electric shaver according to the present invention. In FIG. 2, the electric razor is composed of a main body case 1, an operating unit assembled to the main body case 1, a trimmer unit (not shown) assembled to the rear surface of the case, and the like. At the top and bottom of the front surface of the main body case 1, a switch knob 2 for starting the motor and an indicator lamp 3 for displaying the operating state of the electric razor are provided.

作動ユニットは、その下半側を占める電装品部と、電装品部の上部に設けられるかみそりヘッド５とで構成する。電装品部は、電池枠に回路基板６と２次電池７を組み付けて構成してあり、全体が先の本体ケース１内に収容してある。回路基板６には、スイッチノブ２で切換え操作されるスイッチや、制御回路を構成する電子部品、および表示灯３用の光源となるＬＥＤなどが実装してある。 The operation unit includes an electrical component part that occupies the lower half of the operation unit, and a razor head 5 provided on the upper part of the electrical component part. The electrical component part is configured by assembling the circuit board 6 and the secondary battery 7 to the battery frame, and the whole is housed in the main body case 1. On the circuit board 6, switches that are switched by the switch knob 2, electronic components that constitute a control circuit, LEDs that serve as light sources for the indicator lamps 3, and the like are mounted.

かみそりヘッド５には、前後一対のメイン刃１１と、メイン刃１１の間に配置されて主に長毛を切断するセンター刃（切断刃）１２と、両刃１１・１２の駆動源となるモーター１３と、モーター動力をメイン刃１１やセンター刃１２などに伝動する駆動機構と、これらの部材を収容するモーターホルダー１４およびヘッドケース１５と、ヘッドケース１５に装着される外刃ホルダー１６などで構成する。 The razor head 5 includes a pair of front and rear main blades 11, a center blade (cutting blade) 12 that is disposed between the main blades 11 and mainly cuts long hairs, and a motor 13 that is a driving source for both the blades 11 and 12. A drive mechanism that transmits motor power to the main blade 11 and the center blade 12, a motor holder 14 and a head case 15 that house these members, an outer blade holder 16 that is attached to the head case 15, and the like.

図３および図４においてメイン刃１１は、外刃ホルダー１６と、外刃ホルダー１６で上下浮動可能に支持される外刃カセット１７と、外刃カセット１７の内面側に配置される内刃ユニット１８とで構成する。外刃ホルダー１６は、内ケース２１と、内ケース２１を支持する外ケース２２とで構成してあり、内ケース２１に前後一対の外刃カセット１７と、センター刃１２とが組み付けられる。 3 and 4, the main blade 11 includes an outer blade holder 16, an outer blade cassette 17 supported by the outer blade holder 16 so as to be able to float up and down, and an inner blade unit 18 disposed on the inner surface side of the outer blade cassette 17. And consist of The outer blade holder 16 includes an inner case 21 and an outer case 22 that supports the inner case 21, and a pair of front and rear outer blade cassettes 17 and a center blade 12 are assembled to the inner case 21.

内ケース２１は上下面が開口する角枠状のプラスチック成形品からなり、その下面開口の前後中央部に受枠２３が一体に形成してある。受枠２３の左右中央部分には、後述する駆動軸４３用の通口２４が上下貫通状に形成してあり、その前後面には、外刃カセット１７を押し上げ付勢するばね腕２５が一体に形成してある。 The inner case 21 is made of a plastic product having a rectangular frame shape with upper and lower surfaces opened, and a receiving frame 23 is integrally formed at the front and rear central portions of the lower surface opening. A through-hole 24 for a drive shaft 43, which will be described later, is formed in a vertically penetrating manner in the left and right central portion of the receiving frame 23, and a spring arm 25 that pushes up and biases the outer blade cassette 17 is integrally formed on the front and rear surfaces thereof. It is formed.

外ケース２２は、上下面が開口する角枠状のプラスチック成形品からなる。内ケース２１を外ケース２２の内面に下方から差し込んで、これら両ケース２１・２２の側壁どうしを係合することにより、両ケース２１・２２を一体化して外刃ホルダー１６とすることができる。外ケース２２は先のヘッドケース１５に外嵌装着されて、ヘッドケース１５の左右両側に組み込んだロックボタン２８でロック保持される。 The outer case 22 is made of a plastic product having a square frame shape whose upper and lower surfaces are open. By inserting the inner case 21 into the inner surface of the outer case 22 from below and engaging the side walls of the two cases 21 and 22, the two cases 21 and 22 can be integrated into the outer blade holder 16. The outer case 22 is externally fitted to the head case 15 and is locked and held by lock buttons 28 incorporated on both the left and right sides of the head case 15.

ロックボタン２８にはロック爪２９が一体に形成してあり、全体を圧縮コイル形のばね３０で移動付勢することにより、ロック爪２９が外ケース２２の側壁内面に設けたロック凹部３１（図４参照）と係合して、外刃ホルダー１６をロック保持できる。ロックボタン２８をばね３０の付勢力に抗して押し込み操作すると、ロック爪２９とロック凹部３１との係合状態が解除されるので、外刃ホルダー１６をヘッドケース１５から取り外すことができる。 A lock claw 29 is formed integrally with the lock button 28, and the lock claw 29 is provided with a lock recess 31 (see FIG. 4), the outer blade holder 16 can be locked. When the lock button 28 is pushed against the urging force of the spring 30, the engagement state between the lock claw 29 and the lock recess 31 is released, so that the outer blade holder 16 can be removed from the head case 15.

外刃カセット１７は、シート状の網刃からなる外刃３４と、外刃３４をアーチ状に保形する外刃フレーム３５とで構成する。外刃３４は、エッチング法、あるいは電鋳法によって形成してある。図４に示すように外刃フレーム３５は、先の内ケース２１で上下動可能に、しかし抜き出しは不能に案内支持されており、先に説明したばね腕２５で押し上げ付勢されている。 The outer blade cassette 17 includes an outer blade 34 formed of a sheet-like mesh blade and an outer blade frame 35 that keeps the outer blade 34 in an arch shape. The outer blade 34 is formed by an etching method or an electroforming method. As shown in FIG. 4, the outer blade frame 35 is guided and supported by the previous inner case 21 so as to be movable up and down, but cannot be pulled out, and is pushed up and biased by the spring arm 25 described above.

内刃ユニット１８は、スリット刃からなる内刃３８と、内刃３８を支持する内刃フレーム３９とからなる。内刃３８はエッチング法で形成したシート状の内刃ブランクに、プレス加工を施して形成してあり、アーチ形状を自己保持できる点が先の外刃３４とは異なる。内刃フレーム３９の下部中央には、振動子４２の駆動軸４３と係合連結する受動片４０が一体に形成してある（図４参照）。 The inner blade unit 18 includes an inner blade 38 made of a slit blade and an inner blade frame 39 that supports the inner blade 38. The inner blade 38 is formed by pressing a sheet-like inner blade blank formed by an etching method, and is different from the outer blade 34 in that the arch shape can be self-held. A passive piece 40 that is engaged with and connected to the drive shaft 43 of the vibrator 42 is integrally formed at the lower center of the inner blade frame 39 (see FIG. 4).

図４に示すように、モーター１３の回転動力は、その出力軸に固定した上下の偏心カムと、前後一対の振動子４２とで往復動力に変換され、各振動子４２の上部に設けた駆動軸４３を介して内刃３８へと伝動される。ケース前方に位置する駆動軸４３には、センター刃１２を駆動するための駆動ピース４４が固定してある。偏心カムおよび振動子４２は、モーターホルダー１４とヘッドケース１５とで区画された区室内に配置されて、水密状に封止してある。 As shown in FIG. 4, the rotational power of the motor 13 is converted into reciprocating power by an upper and lower eccentric cam fixed to the output shaft and a pair of front and rear vibrators 42, and a drive provided above each vibrator 42. It is transmitted to the inner blade 38 via the shaft 43. A drive piece 44 for driving the center blade 12 is fixed to the drive shaft 43 located in front of the case. The eccentric cam and vibrator 42 are disposed in a compartment defined by the motor holder 14 and the head case 15 and sealed in a watertight manner.

図６および図７においてセンター刃１２は、樋体状に形成される左右横長の外刃５１と、外刃５１の内面に沿って摺接する内刃５２と、外刃５１の両側に固定される左右の側端ピース５３・５３と、内刃５２を支持する内刃ホルダー５４と、内刃５２を外刃５１へ向かって付勢するばね５５と、左右一対の側端ピース５３どうしを橋絡する補強枠５６と、センター刃１２の全体を押し上げ付勢する圧縮コイル形のフロートばね５７などで構成してあり、フロートばね５７を除く部品を組むことにより１個のユニット部品とすることができる。 6 and 7, the center blade 12 is fixed to the left and right laterally long outer blades 51 formed in a box shape, the inner blade 52 slidably contacting along the inner surface of the outer blade 51, and both sides of the outer blade 51. The left and right side end pieces 53, 53, the inner blade holder 54 that supports the inner blade 52, the spring 55 that biases the inner blade 52 toward the outer blade 51, and the pair of left and right side end pieces 53 are bridged. And a compression coil-type float spring 57 that pushes and urges the entire center blade 12. By assembling parts excluding the float spring 57, one unit part can be obtained. .

外刃５１は櫛刃からなり、エッチング法で形成したシート状の刃ブランクにプレス加工を施して形成する。外刃５１は一群の切刃５９が形成してある上側の刃部分６０と、刃部分６０を支持する前後一対の支持部分６１とを一体に備えている。図６に示すように、刃部分６０は中央の基枠６２の前後に切刃５９を張り出して形成してあり、刃部分６０の全体が断面逆台形状に折り曲げてある（図５参照）。支持部分６１の両端前後には、それぞれ側端ピース５３に差し込み係合される横向きの連結爪６３が一体に形成してあり、その下面側の基端部分に連結爪６３の差し込み限界を規定する位置決め部６４が形成してある。基枠６２の両側端には斜下向きの脚片６５が折り曲げてある（図７参照）。 The outer blade 51 is composed of a comb blade, and is formed by pressing a sheet-shaped blade blank formed by an etching method. The outer blade 51 is integrally provided with an upper blade portion 60 formed with a group of cutting blades 59 and a pair of front and rear support portions 61 that support the blade portion 60. As shown in FIG. 6, the blade portion 60 is formed by projecting a cutting blade 59 before and after a central base frame 62, and the entire blade portion 60 is bent into an inverted trapezoidal shape (see FIG. 5). Front and rear ends of the support portion 61 are integrally formed with lateral connection claws 63 that are inserted into and engaged with the side end pieces 53, and the insertion limit of the connection claws 63 is defined at the base end portion on the lower surface side. A positioning portion 64 is formed. Diagonally downward leg pieces 65 are bent at both ends of the base frame 62 (see FIG. 7).

内刃５２はエッチング法で鋸刃状に形成してあり、前後中央の基枠６８と、基枠６８の前後面に張り出し形成した一群の切刃６９とで構成される刃部分７０と、基枠６８の両側端に設けた下向きに折れ曲がる連結爪７１とを一体に備えている。内刃５２における支持部分は連結爪７１が兼ねている。外刃５１および内刃５２はそれぞれステンレス板材を素材にして形成してあり、外刃５１の厚み寸法を0.３５mmとするとき、内刃５２の厚み寸法は0.３mmとした。 The inner blade 52 is formed in a saw blade shape by an etching method, and includes a blade portion 70 constituted by a base frame 68 at the front and rear center, and a group of cutting blades 69 formed on the front and rear surfaces of the base frame 68, and a base portion. A connecting claw 71 that is bent downward and provided at both ends of the frame 68 is integrally provided. The connecting claw 71 also serves as a support portion for the inner blade 52. The outer cutter 51 and the inner cutter 52 are each made of a stainless steel plate material. When the thickness dimension of the outer cutter 51 is 0.35 mm, the thickness dimension of the inner cutter 52 is 0.3 mm.

図７において側端ピース５３は、外刃５１を支持する装着座７４と、装着座７４の外側面に設けられる係合脚７５と、装着座７４の内側面に突設される三角形状のガイド片７６などを一体に備えたプラスチック成形品からなる。装着座７４の前後面には、先の連結爪６３が差し込み係合される横溝７７と、後述する補強枠５６の弾性爪９４を受け入れる係合凹部７８が形成してある。横溝７７の上下幅は、連結爪６３の上下幅寸法より僅かに小さく形成してあり、その下側には位置決め部６４を受け止めるリブ状の規制壁７９を形成してある。 In FIG. 7, the side end piece 53 includes a mounting seat 74 that supports the outer blade 51, an engagement leg 75 that is provided on the outer surface of the mounting seat 74, and a triangular guide piece that protrudes from the inner surface of the mounting seat 74. It consists of a plastic molded product integrally equipped with 76 and the like. On the front and rear surfaces of the mounting seat 74, there are formed a lateral groove 77 into which the previous connecting claw 63 is inserted and engaged, and an engaging recess 78 for receiving an elastic claw 94 of the reinforcing frame 56 described later. The vertical width of the lateral groove 77 is slightly smaller than the vertical width dimension of the connecting claw 63, and a rib-shaped regulating wall 79 that receives the positioning portion 64 is formed below the horizontal groove 77.

装着座７４の上面の殆どはガイド片７６の傾斜面と面一状に傾斜させてあって、上面基端に限って脚片６５を受け止める刃受面８１が形成してある。組み付け状態における外刃５１を側端ピース５３に密着接合させるために、横溝７７を含む前後の面壁の対向間隔は、外刃５１の支持部分６１における内面対向間隔より僅かに大きく設定してある。係合脚７５は弾性変形可能な脚アーム８２を介して装着座７４と繋がっている。 Most of the upper surface of the mounting seat 74 is inclined flush with the inclined surface of the guide piece 76, and a blade receiving surface 81 for receiving the leg piece 65 is formed only at the upper end of the upper surface. In order to tightly join the outer blade 51 in the assembled state to the side end piece 53, the facing interval between the front and rear surface walls including the lateral grooves 77 is set slightly larger than the inner surface facing interval in the support portion 61 of the outer blade 51. The engaging leg 75 is connected to the mounting seat 74 via a leg arm 82 that is elastically deformable.

外刃５１の連結爪６３をガイド片７６の側から横溝７７に圧入係合し、位置決め部６４を規制壁７９の横突端で受け止めることにより、外刃５１と側端ピース５３とを正しく位置決めした状態で連結し一体化できる。このとき、刃受面８１に接当する脚片６５は、僅かに弾性変形してばね力を発揮しており、これにより外刃５１と側端ピース５３とが上下に遊動するのを規制する。 The outer cutter 51 and the side piece 53 are correctly positioned by press-fitting and engaging the connecting claw 63 of the outer cutter 51 into the lateral groove 77 from the guide piece 76 side and receiving the positioning portion 64 at the lateral projecting end of the regulating wall 79. Can be connected and integrated in a state. At this time, the leg piece 65 contacting the blade receiving surface 81 is slightly elastically deformed to exert a spring force, thereby restricting the outer blade 51 and the side end piece 53 from moving up and down. .

内刃ホルダー５４は、左右寸法が内刃５２より僅かに大きな横長のプラスチック成形品からなり、その下面中央に駆動ピース４４と係合する門形の受動ピース８５が形成してある。ホルダー上面には、内刃５２を支持するための４個の突起８６が形成され、両側端寄りに、連結爪７１を差し込み係合するための係合溝８７が上向きに開口する状態で形成してある。ホルダー下面の左右両側には、ガイド片７６で左右スライド案内されるスライド溝８８が、下向きおよび横向きに開口する状態で形成してある。 The inner blade holder 54 is made of a horizontally long plastic molded product whose lateral dimension is slightly larger than that of the inner blade 52, and a portal-shaped passive piece 85 that engages with the drive piece 44 is formed at the center of the lower surface thereof. Four protrusions 86 for supporting the inner blade 52 are formed on the upper surface of the holder, and an engagement groove 87 for inserting and engaging the connecting claw 71 is formed in a state of opening upward on both side ends. It is. On both left and right sides of the lower surface of the holder, slide grooves 88 that are slidably guided by the guide pieces 76 are formed in a state of opening downward and laterally.

内刃５２の連結爪７１を左右の係合溝８７に上方から差し込み係合することにより、内刃５２を内刃ホルダー５４に正しく位置決めした状態で連結し一体化できる。この状態では、内刃５２の基枠６８の下面が４個の突起８６で水平に支持されている。 By inserting and engaging the connecting claw 71 of the inner blade 52 into the left and right engaging grooves 87 from above, the inner blade 52 can be connected and integrated with the inner blade holder 54 in a properly positioned state. In this state, the lower surface of the base frame 68 of the inner blade 52 is horizontally supported by the four protrusions 86.

外刃５１の変形を規制するために、左右の側端ピース５３を補強枠５６で橋絡する。図６および図７に示すように、補強枠５６は、左右横長の前後壁９１・９１と、前後壁９１の下縁どうしを繋ぐ４個の橋絡壁９２と、前後壁９１の両端を切り欠いて形成される連結片９３と、連結片９３の下部に連続して内向きに折り曲げられる弾性爪９４とを一体に備えた、ステンレス製のプレス成形品からなる。 In order to restrict the deformation of the outer blade 51, the left and right side end pieces 53 are bridged by the reinforcing frame 56. As shown in FIGS. 6 and 7, the reinforcing frame 56 includes left and right horizontally long front and rear walls 91, 91, four bridge walls 92 that connect the lower edges of the front and rear walls 91, and both ends of the front and rear walls 91. It consists of a press-molded product made of stainless steel integrally provided with a connecting piece 93 formed by lacking and an elastic claw 94 bent continuously inward at the lower part of the connecting piece 93.

前後壁９１の両側端に設けた橋絡壁９２の一端は外側方へ張り出してあり、この張出し部分９２ａに係合穴９５が形成してある（図７参照）。さらに、橋絡壁９２の他端に連続して、内刃５２を外刃５１に押し付け付勢する斜め上向きのばね５５が形成され、その遊端寄に山形のばね爪９７が形成してある。前後壁９１の中央寄り２箇所に設けた橋絡壁９２には、Ｖ字状のばね受突起９８が下向きに突出する状態で折り曲げ形成してある。 One end of a bridging wall 92 provided on both side ends of the front and rear walls 91 projects outward, and an engagement hole 95 is formed in the projecting portion 92a (see FIG. 7). Further, an obliquely upward spring 55 that presses and urges the inner blade 52 against the outer blade 51 is formed continuously with the other end of the bridging wall 92, and a mountain-shaped spring claw 97 is formed at the free end. . On the bridging wall 92 provided at two positions near the center of the front and rear walls 91, a V-shaped spring receiving projection 98 is bent and formed so as to protrude downward.

上記の補強枠５６を、左右の側端ピース５３に下面側から差し込み係合して、連結片９３を規制壁７９の下面に沿わせ、図８に示すように弾性爪９４を係合凹部７８に落とし込み係合させることにより、補強枠５６を両側端ピース５３と分離不能に一体化できる。この組み付け状態において、弾性爪９４は、補強枠５６が左右の側端ピース５３から下方へ抜け出るのを規制し、同時に両側端ピース５３が補強枠５６から左右方向へ抜け出るのを規制する。加えて、張出し部分９２ａに設けた係合穴９５が、側端ピース５３の下面に設けたピン１０１と係合して、補強枠５６と両側端ピース５３との左右方向の相対移動を規制している。 The reinforcing frame 56 is inserted into and engaged with the left and right side end pieces 53 from the lower surface side, the connecting piece 93 is placed along the lower surface of the regulating wall 79, and the elastic claw 94 is engaged with the engaging recess 78 as shown in FIG. The reinforcing frame 56 can be integrated with the side end pieces 53 so as not to be separated by being dropped and engaged with each other. In this assembled state, the elastic claw 94 restricts the reinforcing frame 56 from dropping downward from the left and right side end pieces 53 and at the same time restricts the side end pieces 53 from coming out of the reinforcing frame 56 in the left-right direction. In addition, the engagement hole 95 provided in the overhanging portion 92a engages with the pin 101 provided on the lower surface of the side end piece 53, thereby restricting the relative movement in the left-right direction between the reinforcing frame 56 and the side end pieces 53. ing.

上記のように、補強枠５６を左右の側端ピース５３に係合して、両者５３・５６を分離不能に一体化すると、連結爪６３の横溝７７への圧入係合による結合作用に加えて、外刃５１と左右の側端ピース５３とを補強枠５６でさらに強固に固定でき、左右の側端ピース５３が外刃５１から外側方へ抜け外れるのを確実に防止できる。補強枠５６を組付けた状態においては、ばね爪９７が側端ピース５３のスライド溝８８を前後に挟む溝壁８９に弾性接当して、内刃５２を外刃５１に押し付けている。 As described above, when the reinforcing frame 56 is engaged with the left and right side end pieces 53 and the both 53 and 56 are integrated so as not to be separated, in addition to the coupling action by the press-fitting engagement of the connecting claw 63 into the lateral groove 77. The outer blade 51 and the left and right side end pieces 53 can be more firmly fixed by the reinforcing frame 56, and the left and right side end pieces 53 can be reliably prevented from coming off from the outer blade 51 outward. In the state in which the reinforcing frame 56 is assembled, the spring pawl 97 is elastically brought into contact with the groove wall 89 that sandwiches the slide groove 88 of the side end piece 53 in the front-rear direction, and presses the inner blade 52 against the outer blade 51.

センター刃１２の組立は以下の手順で行う。まず、内刃５２の連結爪７１を内刃ホルダー５４の係合溝８７に圧入して、両者５２・５４を一体化しておく。次に、外刃５１に設けた片方の連結爪６３を側端ピース５３の横溝７７に圧入して、外刃５１に片方の側端ピース５３を固定する。この状態の外刃５１の内面に、内刃５２が組み付けられた内刃ホルダー５４を差し込み、残る側端ピース５３を外刃５１に組み付けて、外刃５１と内刃５２とを分離不能に一体化する。この状態では、図９に示すように内刃ホルダー５４のスライド溝８８が、側端ピース５３のガイド片７６で案内されている。最後に、補強枠５６の連結片９３を側端ピース５３の装着座７４に下方から差し込んで、その弾性爪９４を係合凹部７８に落とし込み係合させる。 The center blade 12 is assembled in the following procedure. First, the connecting claw 71 of the inner blade 52 is press-fitted into the engaging groove 87 of the inner blade holder 54, and the both 52 and 54 are integrated. Next, one of the connecting claws 63 provided on the outer blade 51 is press-fitted into the lateral groove 77 of the side end piece 53, and the one side end piece 53 is fixed to the outer blade 51. The inner blade holder 54 with the inner blade 52 assembled is inserted into the inner surface of the outer blade 51 in this state, and the remaining side end piece 53 is assembled to the outer blade 51 so that the outer blade 51 and the inner blade 52 are not separable. Turn into. In this state, as shown in FIG. 9, the slide groove 88 of the inner blade holder 54 is guided by the guide piece 76 of the side end piece 53. Finally, the connecting piece 93 of the reinforcing frame 56 is inserted into the mounting seat 74 of the side end piece 53 from below, and the elastic claw 94 is dropped into the engaging recess 78 and engaged.

上記のように、本発明のセンター刃１２は、外刃５１、内刃５２、側端ピース５３、内刃ホルダー５４、補強枠５６などの構成部品を、所定の手順に従って係合し圧入するだけで、溶着処理を行う必要もなく一連の組立を終了できる。したがって、本発明のセンター刃１２によれば、従来のこの種の切断刃に比べて、組立に要する手間と時間を削減して、製造コストを削減できるうえ、組立対象となる部品どうしを正確にしかも強固に連結固定できる。また、溶着処理を省くので、金属部分とプラスチック部分との分離を簡単に行うことができ、これにより、リサイクル可能な部品の分別を容易化して、環境に配慮した切断刃構造とすることができる。 As described above, the center blade 12 of the present invention only engages and press-fits components such as the outer blade 51, the inner blade 52, the side end piece 53, the inner blade holder 54, and the reinforcing frame 56 according to a predetermined procedure. Thus, a series of assembly can be completed without the need for performing a welding process. Therefore, according to the center blade 12 of the present invention, it is possible to reduce the labor and time required for assembling and to reduce the manufacturing cost as compared with the conventional cutting blade of this type, and to accurately identify the parts to be assembled. Moreover, it can be firmly connected and fixed. In addition, since the welding process is omitted, the metal part and the plastic part can be easily separated, thereby facilitating the separation of recyclable parts and providing an environment-friendly cutting blade structure. .

得られたセンター刃１２は、外刃ホルダー１６の内ケース２１に組み付けるが、予め補強枠５６の左右のばね受突起９８にフロートばね５７を組んだうえで、側端ピース５３の係合脚７５を内ケース２１のガイド溝１０３に係合装着する。これにより、センター刃１２の全体が内ケース２１で上下動可能に、しかも左右傾動可能に浮動支持される。なお、圧縮コイルばねからなるフロートばね５７は、ばね受突起９８に外嵌装着することにより、両者５７・９８が共に弾性変形して仮組み状態を維持できるので、ばね受突起９８に対するフロートばね５７の組み付けを容易に行えるにもかかわらず、一旦組んでしまうと簡単に分離することはなく、したがって組付け時の作業性を向上できる点で有利である。 The obtained center blade 12 is assembled to the inner case 21 of the outer blade holder 16. The float spring 57 is assembled to the left and right spring receiving projections 98 of the reinforcing frame 56 in advance, and the engagement leg 75 of the side end piece 53 is then assembled. The inner case 21 is engaged and mounted in the guide groove 103. As a result, the entire center blade 12 is floated and supported by the inner case 21 so as to be movable up and down and tilted left and right. The float spring 57 made of a compression coil spring is fitted on the spring receiving projection 98 so that both the springs 57 and 98 can be elastically deformed to maintain the temporarily assembled state. However, once assembled, they are not easily separated, which is advantageous in that the workability during assembly can be improved.

上記の実施例では、切断刃１２が前後一対のメイン刃１１の間に配置してある場合を例示したが、本発明の切断刃１２はメイン刃１１の前後いずれか一側に配置することができる。また、切断刃１２は外刃ホルダー１６に組み込む必要はなく、本体ケース１に組むことができる。その場合には、メイン刃１１の前後いずれか一側に隣接する膨出壁を本体ケース１の上部に形成し、この膨出壁に切断刃１２を組むとよい。メイン刃１１を切断刃１２と同様のスリット刃や櫛刃等で構成してもよい。補強枠５６はプラスチック成形品で構成することができる。 In the above embodiment, the case where the cutting blade 12 is disposed between the pair of front and rear main blades 11 is illustrated, but the cutting blade 12 of the present invention can be disposed on either the front or rear side of the main blade 11. it can. Further, the cutting blade 12 does not need to be incorporated in the outer blade holder 16 and can be assembled in the main body case 1. In that case, a bulging wall adjacent to one of the front and rear sides of the main blade 11 may be formed on the upper portion of the main body case 1, and the cutting blade 12 may be assembled to the bulging wall. The main blade 11 may be composed of a slit blade, a comb blade or the like similar to the cutting blade 12. The reinforcing frame 56 can be formed of a plastic molded product.

外刃５１および内刃５２は、それぞれスリット刃、櫛刃、鋸刃のいずれで構成してあってもよい。網刃で外刃５１を構成することができる。内刃５２の連結爪７１を内刃ホルダー５４の係合溝８７に圧入したうえで、連結爪７１の近傍壁をかしめて内刃５２を固定することができる。上記の実施例では、外刃ホルダー１６が内ケース２１と外ケース２２とで、ツーピース構造である場合について説明したが、外刃ホルダー１６はワンピース構造とすることができ、その場合には切断刃１２を外刃ホルダー１６に装着することができる。 The outer blade 51 and the inner blade 52 may each be formed of a slit blade, a comb blade, or a saw blade. The outer blade 51 can be configured with a mesh blade. After the connecting claw 71 of the inner blade 52 is press-fitted into the engagement groove 87 of the inner blade holder 54, the inner blade 52 can be fixed by caulking the vicinity wall of the connecting claw 71. In the above embodiment, the case where the outer blade holder 16 has the inner case 21 and the outer case 22 and has a two-piece structure has been described. However, the outer blade holder 16 may have a one-piece structure, in which case the cutting blade 12 can be mounted on the outer blade holder 16.

かみそりヘッドの縦断正面図である。It is a vertical front view of a razor head. 電気かみそりの正面図である。It is a front view of an electric razor. かみそりヘッドの分解斜視図である。It is a disassembled perspective view of a razor head. 一部を破断したかみそりヘッドの分解正面図である。It is a disassembled front view of the razor head which fractured | ruptured one part. かみそりヘッドの縦断側面図である。It is a vertical side view of a razor head. 切断刃の分解斜視図である。It is a disassembled perspective view of a cutting blade. 一部を破断した切断刃の分解正面図である。It is a disassembled front view of the cutting blade which partly fractured. 図７におけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG. 切断刃の一部破断平面図である。It is a partially broken top view of a cutting blade.

符号の説明Explanation of symbols

５かみそりヘッド
１２センター刃（切断刃）
５１外刃
５２内刃
５３側端ピース
５４内刃ホルダー
５５ばね
５６補強枠
６３連結爪
６４位置決め部
７７横溝
７８係合凹部
７９規制壁
９１前後壁
９２橋絡壁
９３連結片
９４弾性爪 5 Razor head 12 Center blade (cutting blade)
51 Outer blade 52 Inner blade 53 Side end piece 54 Inner blade holder 55 Spring 56 Reinforcement frame 63 Connection claw 64 Positioning portion 77 Horizontal groove 78 Engaging recess 79 Restriction wall 91 Front and rear walls 92 Bridge wall 93 Connection piece 94 Elastic claw

Claims

かみそりヘッド（５）に設けた切断刃（１２）が、樋体状に形成される左右横長の外刃（５１）と、外刃（５１）の内面に沿って摺接する内刃（５２）と、外刃（５１）の両側に固定される左右の側端ピース（５３）と、内刃（５２）を支持する内刃ホルダー（５４）と、内刃（５２）を外刃（５１）へ向かって付勢するばね（５５）とを備えており、
外刃（５１）および内刃（５２）は、それぞれ刃部分（６０・７０）と、刃部分（６０・７０）を支持する支持部分（６１・７１）とを一体に備えており、
外刃（５１）の支持部分（６１）の両端前後には、それぞれ側端ピース（５３）に差し込み係合される連結爪（６３）が一体に形成されており、
側端ピース（５３）の前後面に設けた横溝（７７）に連結爪（６３）を圧入係合して、外刃（５１）と側端ピース（５３）とが一体化してある切断刃（１２）を備えており、
外刃（５１）の刃部分（６０）の上面両側に設けた脚片（６５）が、側端ピース（５３）の上面に設けた刃受面（８１）で受け止め支持してある電気かみそり。 A cutting blade (12) provided on the razor head (5) has a horizontally long outer blade (51) formed in a box shape, and an inner blade (52) in sliding contact with the inner surface of the outer blade (51). The left and right side end pieces (53) fixed to both sides of the outer blade (51), the inner blade holder (54) that supports the inner blade (52), and the inner blade (52) to the outer blade (51) A spring (55) biasing toward the
The outer blade (51) and the inner blade (52) are each integrally provided with a blade portion (60, 70) and a support portion (61, 71) that supports the blade portion (60, 70).
Connection claws (63) that are inserted into and engaged with the side end pieces (53) are integrally formed on both sides of the support portion (61) of the outer blade (51),
A cutting blade (51) in which a connecting claw (63) is press-fitted into a lateral groove (77) provided on the front and rear surfaces of the side end piece (53), and the outer blade (51) and the side end piece (53) are integrated. equipped with a 12),
An electric shaver in which leg pieces (65) provided on both sides of the upper surface of the blade portion (60) of the outer blade (51) are received and supported by a blade receiving surface (81) provided on the upper surface of the side end piece (53).

連結爪（６３）の近傍に、連結爪（６３）の差し込み限界を規定する位置決め部（６４）が形成されており、
横溝（７７）の近傍に、位置決め部（６４）を受け止める規制壁（７９）が形成してある請求項１記載の電気かみそり。 A positioning part (64) that defines the insertion limit of the connection claw (63) is formed in the vicinity of the connection claw (63),
The electric shaver according to claim 1, wherein a regulating wall (79) for receiving the positioning portion (64) is formed in the vicinity of the lateral groove (77).

内刃（５２）が、内刃（５２）とほぼ同じ左右幅に形成した内刃ホルダー（５４）で支持されており、
内刃ホルダー（５４）の両端に下向きに開口するスライド溝（８８）が形成されており、
両側端ピース（５３）の対向面のそれぞれに、前記スライド溝（８８）と係合して、内刃ホルダー（５４）を左右スライド自在に案内するガイド片（７６）が形成してある請求項１または２記載の電気かみそり。 The inner blade (52) is supported by an inner blade holder (54) formed in substantially the same lateral width as the inner blade (52),
Slide grooves (88) that open downward are formed at both ends of the inner blade holder (54),
A guide piece (76) for engaging the slide groove (88) and guiding the inner blade holder (54) so as to be slidable in the left-right direction is formed on each of the opposing surfaces of the side end pieces (53). The electric shaver according to 1 or 2 .

内刃ホルダー（５４）の両端に、上向きに開口する係合溝（８７）が形成されており、
内刃（５２）の両端に、下向きに折れ曲がる連結爪（７１）が設けられており、
連結爪（７１）を係合溝（８７）に圧嵌係合して、内刃（５２）が内刃ホルダー（５４）と一体化してある請求項１、２または３記載の電気かみそり。 Engaging grooves (87) opening upward are formed at both ends of the inner blade holder (54),
Connection claws (71) that bend downward are provided at both ends of the inner blade (52),
The electric shaver according to claim 1, 2, or 3, wherein the connecting claw (71) is press-fitted into the engaging groove (87) and the inner blade (52) is integrated with the inner blade holder (54) .

左右一対の側端ピース（５３）どうしが、側端ピース（５３）に下面側から係合装着される補強枠（５６）で橋絡されており、
補強枠（５６）は、前後壁（９１）と、前後壁（９１）の下縁複数箇所を繋ぐ橋絡壁（９２）と、前後壁（９１）の両端に設けられる連結片（９３）と、連結片（９３）に連続して内向きに折り曲げられる弾性爪（９４）とを一体に備えており、
補強枠（５６）を側端ピース（５３）に係合装着した状態において、弾性爪（９４）が側端ピース（５３）の係合凹部（７８）に落とし込み係合させて、側端ピース（５３）と補強枠（５６）が一体化してある請求項１から４のいずれかに記載の電気かみそり。 The pair of left and right side end pieces (53) are bridged by a reinforcing frame (56) that is engaged and attached to the side end piece (53) from the lower surface side,
The reinforcing frame (56) includes a front and rear wall (91), a bridge wall (92) that connects a plurality of lower edge portions of the front and rear wall (91), and connecting pieces (93) provided at both ends of the front and rear wall (91). And an elastic claw (94) that is bent inward continuously to the connecting piece (93).
In a state where the reinforcing frame (56) is engaged and attached to the side end piece (53), the elastic claw (94) drops into the engagement recess (78) of the side end piece (53) and engages with the side end piece ( 53. The electric shaver according to claim 1, wherein the reinforcing frame (53) and the reinforcing frame (56) are integrated .

補強枠（５６）の前後壁（９１）の両側端に橋絡壁（９２）が設けられており、側端ピース（５３）と補強枠（５６）を一体化した状態において、橋絡壁（９２）に形成した係合穴（９５）が、側端ピース（５３）の下面に突設したピン（１０１）に係合装着してある請求項５記載の電気かみそり。 Bridge walls (92) are provided on both ends of the front and rear walls (91) of the reinforcing frame (56). In the state where the side end piece (53) and the reinforcing frame (56) are integrated, the bridge wall ( The electric razor according to claim 5, wherein the engagement hole (95) formed in (92) is engaged and mounted on a pin (101) projecting from the lower surface of the side end piece (53) .

補強枠（５６）に、内刃ホルダー（５４）を介して内刃（５２）を外刃（５１）に押し付け付勢するばね（５５）が一体に形成してある請求項５または６記載の電気かみそり。 The spring (55) for pressing and urging the inner blade (52) against the outer blade (51) via the inner blade holder (54) is integrally formed on the reinforcing frame (56) . Electric razor.

内刃ホルダー（５４）に設けたスライド溝（８８）の形成領域に臨んで、ばね（５５）が配置されており、ばね（５５）の遊端寄りに設けたばね爪（９７）が、スライド溝（８８）を前後に挟む溝壁（８９）に弾性接当させてある請求項７記載の電気かみそり。 A spring (55) is arranged facing the formation region of the slide groove (88) provided in the inner blade holder (54), and a spring claw (97) provided near the free end of the spring (55) is provided in the slide groove. 8. An electric shaver according to claim 7 , wherein said shaver is elastically contacted with a groove wall (89) sandwiching (88) forward and backward .

切断刃（１２）の全体が、外刃ホルダー（１６）に設けた受枠（２３）と補強枠（５６）との間に配置したフロートばね（５７）で押し上げ付勢されており、
補強枠（５６）の下面にフロートばね（５７）の一端を受け止めるばね受突起（９８）が形成してある請求項５から８のいずれかに記載の電気かみそり。 The entire cutting blade (12) is pushed up and biased by a float spring (57) disposed between a receiving frame (23) and a reinforcing frame (56) provided in the outer blade holder (16),
The electric shaver according to any one of claims 5 to 8, wherein a spring receiving projection (98) for receiving one end of the float spring (57) is formed on the lower surface of the reinforcing frame (56) .

外刃（５１）の支持部分（６１）と補強枠（５６）の前後壁（９１）とが、上下に近接配置してある請求項６から９のいずれかに記載の電気かみそり。 The electric shaver according to any one of claims 6 to 9, wherein the support portion (61) of the outer blade (51) and the front and rear walls (91) of the reinforcing frame (56) are arranged close to each other in the vertical direction .