上記のように、２個のメイン刃と、２個のトリマー刃とを備えた電気かみそりによれば、切断刃の数が多い分だけ髭と切断刃との接触機会を増やすことができる。また、トリマー刃の前後に第１切刃部と第２切刃部を形成するので、髭の導入機会を増やして長毛やくせ髭を効果的に切断できる。しかし、トリマー刃の可動刃を逆ハット形に形成するので、トリマー刃の前後厚み寸法が大きくなるのを避けられず、かみそりヘッドが大形化する点に問題がある。とくに、メイン刃とトリマー刃を２個ずつ配置するマルチ刃構造の電気かみそりにおいては、かみそりヘッドの前後寸法が大きくなるのを避けられない。
As described above, according to the electric razor provided with the two main blades and the two trimmer blades, the chance of contact between the scissors and the cutting blades can be increased by the number of cutting blades. Moreover, since the 1st cutting blade part and the 2nd cutting blade part are formed before and behind a trimmer blade, the introduction opportunity of a wrinkle can be increased and a long hair and a wrinkle wrinkle can be cut | disconnected effectively. However, since the movable blade of the trimmer blade is formed in an inverted hat shape, it is inevitable that the front and rear thickness dimensions of the trimmer blade are increased, and there is a problem in that the razor head is enlarged. In particular, in an electric razor having a multi-blade structure in which two main blades and two trimmer blades are arranged, it is inevitable that the longitudinal dimension of the razor head is increased.
また、逆ハット形に形成される前後の張り出し壁に切刃を形成するので、前後の切刃の間に無駄な空間が形成されるのを避けられず、可動刃の前後方向の全幅寸法に比べて、切刃部分が占める前後長さが短く、その分だけ髭の切断機会が減少する。さらに、前後の張り出し壁に切刃を形成するので、第２切刃部における切刃の上下長さが張り出し壁の厚み寸法分にしかならない。そのため、逆Ｌ字状の第２切刃部における縦方向の有効切刃長がごく僅かでしかなく、第２切刃部で髭切断を効果的に行なうことができない。
In addition, since the cutting blades are formed on the front and rear protruding walls formed in an inverted hat shape, it is inevitable that a useless space is formed between the front and rear cutting blades, and the full width dimension of the movable blade in the front-rear direction is reduced. In comparison, the front and back length occupied by the cutting edge portion is short, and the opportunity for cutting the scissors is reduced accordingly. Further, since the cutting blades are formed on the front and rear extending walls, the vertical length of the cutting blade in the second cutting blade portion is only the thickness dimension of the extending wall. Therefore, the effective cutting edge length in the vertical direction in the inverted L-shaped second cutting edge is very small, and the scissors cutting cannot be effectively performed at the second cutting edge.
本発明の目的は、粗剃り用の切断刃の構造を簡素化してかみそりヘッドを小形化でき、しかも長毛やくせ髭の切断と仕上げ剃りとを効果的に行なえる電気かみそりを提供することにある。本発明の目的は、粗剃り用の第１切断刃による髭切断をより効果的に行なって、長毛やくせ髭をより確実に切断でき、とくにあご部におけるくせ髭を的確に切断できる電気かみそりを提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide an electric razor capable of simplifying the structure of a cutting blade for rough shaving to reduce the size of a razor head, and effectively cutting long hairs and wrinkles and finishing shaving. . An object of the present invention is to provide an electric razor that can more effectively cut a long hair and a wrinkle by cutting the scissors with a first cutting blade for rough shaving, and in particular, can accurately cut a wrinkle by a chin part. It is to provide.
本発明に係る電気かみそりは、粗剃り用の第１切断刃１１と、仕上げ剃り用の第２切断刃１２とを備えている。第１切断刃１１を構成する固定刃１８および可動刃１９のそれぞれは、縦壁３６・４８と、縦壁３６・４８の上端に連続して折り曲げられる上壁３７・４９とで逆Ｌ字状に形成する。上壁３７・４９の遊端側にスリット刃状の第１切刃部３８を形成し、上壁３７・４９から縦壁３６・４８にわたってスリット刃状の第２切刃部３９を形成する。
The electric shaver according to the present invention includes a first cutting blade 11 for rough shaving and a second cutting blade 12 for finishing shaving. Each of the fixed blade 18 and the movable blade 19 constituting the first cutting blade 11 has an inverted L shape with vertical walls 36 and 48 and upper walls 37 and 49 which are continuously bent at the upper ends of the vertical walls 36 and 48. To form. A slit blade-shaped first cutting blade portion 38 is formed on the free end side of the upper walls 37, 49, and a slit blade-shaped second cutting blade portion 39 is formed from the upper walls 37, 49 to the vertical walls 36, 48.
第１切断刃１１を構成する固定刃１８および可動刃１９の上壁３７・４９のそれぞれに、第１切刃部３８・５０と第２切刃部３９・５１とを区分する補強リブ４０・５２を形成する。
Reinforcing ribs 40, which divide the first cutting blade portions 38, 50 and the second cutting blade portions 39, 51 into the upper walls 37, 49 of the fixed blade 18 and the movable blade 19 constituting the first cutting blade 11, respectively. 52 is formed.
第１切断刃１１を構成する固定刃１８および可動刃１９の左右両側に、それぞれ切刃を構成しない逆Ｌ字状の刃形保持壁４１・５７を設ける。これら刃形保持壁４１・５７の間に補強リブ４０・５２を形成する。
On both the left and right sides of the fixed blade 18 and the movable blade 19 constituting the first cutting blade 11, inverted L-shaped blade shape holding walls 41 and 57 not constituting the cutting blade are provided. Reinforcing ribs 40 and 52 are formed between the blade-shaped holding walls 41 and 57.
縦壁３６・４８と上壁３７・４９とで挟む角度θ１・θ２を鋭角に設定する。
The angles θ1 and θ2 sandwiched between the vertical walls 36 and 48 and the upper walls 37 and 49 are set to acute angles.
可動刃１９を構成する縦壁４８と上壁４９とで挟む角度θ２を、固定刃１８を構成する縦壁３６と上壁３７とで挟む角度θ１より僅かに小さく設定する。
An angle θ2 sandwiched between the vertical wall 48 and the upper wall 49 constituting the movable blade 19 is set slightly smaller than an angle θ1 sandwiched between the vertical wall 36 and the upper wall 37 constituting the fixed blade 18.
固定刃１８は固定刃支持体５９に固定し、可動刃１９は可動刃支持体６０に固定する。固定刃１８は、縦壁３６の下端に設けた取付座４６を、縦壁３６と対向する固定刃支持体５９の装着座６５に固定して、固定刃支持体５９と隙間を介して対向する状態で固定する。可動刃１９および可動刃支持体６０は、固定刃１８と固定刃支持体５９との対向隙間Ｅに収容して、固定刃１８の内面に沿って摺動可能に固定刃支持体５９で支持する。
The fixed blade 18 is fixed to the fixed blade support 59, and the movable blade 19 is fixed to the movable blade support 60. The fixed blade 18 fixes the mounting seat 46 provided at the lower end of the vertical wall 36 to the mounting seat 65 of the fixed blade support body 59 facing the vertical wall 36 and faces the fixed blade support body 59 through a gap. Fix in state. The movable blade 19 and the movable blade support 60 are accommodated in a facing gap E between the fixed blade 18 and the fixed blade support 59 and supported by the fixed blade support 59 so as to be slidable along the inner surface of the fixed blade 18. .
第１切断刃１１を構成する固定刃１８の後端において、第１切刃部３８の小刃４３を下向きに折り曲げる。前記小刃４３の折り曲げ部の下方に隣接して、小刃４３の変形を防ぐ防護壁６３を固定刃支持体５９に設ける。
At the rear end of the fixed blade 18 constituting the first cutting blade 11, the small blade 43 of the first cutting blade portion 38 is bent downward. A protective wall 63 for preventing deformation of the small blade 43 is provided on the fixed blade support 59 adjacent to the lower portion of the bent portion of the small blade 43.
可動刃支持体６０は、可動刃１９の縦壁４８を支持する主面壁６６と、主面壁６６の両側に突設されて可動刃１９の両側の刃形保持壁５７を支持する逆Ｌ字状の上突壁６７とを一体に備えている。縦壁４８の下端中央に設けた取付座５８を主面壁６６に設けた装着座６８に固定して、可動刃１９を可動刃支持体６０と一体化する。
The movable blade support 60 has a main surface wall 66 that supports the vertical wall 48 of the movable blade 19, and an inverted L shape that protrudes on both sides of the main surface wall 66 and supports the blade-shaped holding walls 57 on both sides of the movable blade 19. The upper projecting wall 67 is integrally provided. A mounting seat 58 provided at the center of the lower end of the vertical wall 48 is fixed to a mounting seat 68 provided on the main surface wall 66, and the movable blade 19 is integrated with the movable blade support 60.
固定刃１８を構成する縦壁３６と上壁３７との折り曲げ部の内面および／または外面に、縦壁３６と上壁３７との折り曲げ線に沿う溝１０５を凹み形成する。
A groove 105 is formed in the inner and / or outer surface of the bent portion between the vertical wall 36 and the upper wall 37 constituting the fixed blade 18 along the bending line between the vertical wall 36 and the upper wall 37.
固定刃１８は、エッチング処理された金属板材にプレス加工を施して形成する。溝１０５はハーフエッチング加工で形成する。
The fixed blade 18 is formed by subjecting an etched metal plate material to press working. The groove 105 is formed by half etching.
第１切断刃１１を構成する固定刃１８の第１切刃部３８の遊端縁を平面視において外突湾曲線状に形成する。
The free end edge of the first cutting blade portion 38 of the fixed blade 18 constituting the first cutting blade 11 is formed in an outwardly curved line shape in plan view.
第１切刃部３８に形成される刃穴４２と小刃４３のそれぞれを、かみそりヘッド６の遊端側へ向かって拡がる向きに放射配置する。
Each of the blade hole 42 and the small blade 43 formed in the first cutting edge portion 38 is radially arranged so as to expand toward the free end side of the razor head 6.
本発明においては、粗剃り用の第１切断刃１１と仕上げ剃り用の第２切断刃１２とを備えている電気かみそりにおいて、第１切断刃１１の固定刃１８および可動刃１９のそれぞれを、縦壁３６・４８と上壁３７・４９とで逆Ｌ字状に形成するので、逆ハット形の可動刃を備えた従来のトリマー刃に比べて、両者の摺動部分に形成される切刃の有効長さを大きくすることができる。このように、切刃の有効長さが大きいと、切刃の有効長さが従来のトリマー刃と同じである場合には、第１切断刃１１の前後厚みを小さくして、かみそりヘッドを小形化できる。また、従来のトリマー刃と第１切断刃１１の前後厚みを同じとする場合には、可動刃１９の切刃の有効長さを充分に大きくして、髭切断を効果的に行なうことができる。
In the present invention, in the electric shaver including the first cutting blade 11 for rough shaving and the second cutting blade 12 for finishing shaving, each of the fixed blade 18 and the movable blade 19 of the first cutting blade 11 is Since the vertical walls 36 and 48 and the upper walls 37 and 49 are formed in an inverted L shape, the cutting blade formed on the sliding portion of both of them compared to a conventional trimmer blade having a reverse hat-shaped movable blade The effective length of can be increased. As described above, when the effective length of the cutting blade is large, when the effective length of the cutting blade is the same as that of the conventional trimmer blade, the thickness of the first cutting blade 11 is reduced and the razor head is reduced in size. Can be Further, when the front and rear thicknesses of the conventional trimmer blade and the first cutting blade 11 are made the same, the effective length of the cutting blade of the movable blade 19 can be made sufficiently large to effectively perform the scissor cutting. .
また、上壁３７・４９の後端側にスリット刃状の第１切刃部３８・５０を形成し、上壁３７・４９から縦壁３６・４８にわたってスリット刃状の第２切刃部３９・５１を形成するので、肌面に倒れこんだ長毛やくせ髭を両切刃部３８・３９・５０・５１に誘い込んで、繰り返し効果的に髭切断を行なうことができる。とくに、あご部に生えた髭を切断する場合には、電気かみそりを喉もとからあごの側へ滑らせる場合と、逆向きに滑らせる場合とのいずれの場合にも、両切刃部３８・３９・５０・５１で長毛やくせ髭を繰り返し効果的に切断できる。したがって、本発明の電気かみそりによれば、粗剃り用の第１切断刃１１の構造を簡素化してかみそりヘッド６のコンパクト化を実現でき、その分だけかみそりヘッド６を小形化できる。また、長毛やくせ髭の切断を粗剃り用の第１切断刃１１で確実に切断して仕上げ剃りを効果的に行なえる。とくに、長毛やくせ髭が肌面に倒れ込みやすいあご部において、長毛やくせ髭を第１切断刃１１で的確に切断して、仕上げ剃りを効果的に行なえる。
Also, slit blade-shaped first cutting blade portions 38, 50 are formed on the rear end side of the upper walls 37, 49, and the slit blade-shaped second cutting blade portions 39 extend from the upper walls 37, 49 to the vertical walls 36, 48. Since 51 is formed, long hairs and wrinkles that have fallen into the skin surface are drawn into the two cutting blade portions 38, 39, 50, and 51, and the wrinkles can be cut repeatedly and effectively. In particular, when cutting a ridge that grows on the chin part, both the cutting blade part 38 is used in both cases where the electric razor is slid from the throat to the chin side and in the opposite direction.・ Long hair and wrinkles can be cut repeatedly and effectively with 39, 50 and 51. Therefore, according to the electric razor of the present invention, the structure of the first cutting blade 11 for rough shaving can be simplified and the razor head 6 can be made compact, and the razor head 6 can be downsized accordingly. Further, it is possible to effectively cut the long hair and the wrinkle with the first cutting blade 11 for rough shave and to effectively perform the finish shave. In particular, in the chin portion where long hairs and wrinkles tend to fall on the skin surface, the long hairs and wrinkles can be accurately cut with the first cutting blade 11 to effectively perform the finish shaving.
固定刃１８および可動刃１９の上壁３７・４９のそれぞれに、第１切刃部３８・５０と第２切刃部３９・５１とを区分する補強リブ４０・５２を形成すると、各切刃部３８・３９・５０・５１の構造強度を向上できる。詳しくは、上壁３７・４９の遊端側に形成される小刃４３・５４を補強リブ４０・５２で支持して、第１切刃部３８・５０の構造強度を向上し、同時に、上壁３７・４９から縦壁３６・４８にわたって形成される小刃４５・５６を補強リブ４０・５２で支持して、第２切刃部３９・５１の構造強度を向上できる。したがって、逆Ｌ字状の固定刃１８と可動刃１９を常に適正な状態で密着させて、長毛やくせ髭を第１切断刃１１でより確実に切断できる。
When the reinforcing ribs 40 and 52 for separating the first cutting blade portions 38 and 50 and the second cutting blade portions 39 and 51 are formed on the upper walls 37 and 49 of the fixed blade 18 and the movable blade 19, respectively, The structural strength of the portions 38, 39, 50, 51 can be improved. Specifically, the small blades 43 and 54 formed on the free end side of the upper walls 37 and 49 are supported by the reinforcing ribs 40 and 52 to improve the structural strength of the first cutting blade portions 38 and 50, and at the same time, The small blades 45 and 56 formed from the walls 37 and 49 to the vertical walls 36 and 48 are supported by the reinforcing ribs 40 and 52, so that the structural strength of the second cutting blade portions 39 and 51 can be improved. Therefore, the long hair and the wrinkle can be more reliably cut by the first cutting blade 11 by always bringing the inverted L-shaped fixed blade 18 and the movable blade 19 into close contact with each other in an appropriate state.
両切刃部３８・３９・５０・５１の左右側端を刃形保持壁４１・５７で保形すると、補強リブ４０・５２の補強効果に加えて、固定刃１８および可動刃１９の構造強度を刃形保持壁４１・５７でさらに向上できる。したがって、縦壁３６・４８の下側を支持するしかない、逆Ｌ字状の固定刃１８と可動刃１９をさらに適正に密着させて、両切刃部３８・３９・５０・５１に捕捉された長毛やくせ髭をより確実に切断できる。
When the left and right ends of the two cutting blade portions 38, 39, 50, 51 are held by the blade-shaped holding walls 41, 57, the structural strength of the fixed blade 18 and the movable blade 19 in addition to the reinforcing effect of the reinforcing ribs 40, 52. Can be further improved by the blade-shaped holding walls 41 and 57. Accordingly, the inverted L-shaped fixed blade 18 and the movable blade 19 that can only support the lower side of the vertical walls 36 and 48 are more appropriately brought into close contact with each other and captured by the two cutting blade portions 38, 39, 50, and 51. Longer hairs and wrinkles can be cut more reliably.
縦壁３６・４８と上壁３７・４９とで挟む角度θ１・θ２が鋭角に設定してあると、可動刃１９が可動刃ばね６１で固定刃１８に密着付勢された状態において、可動刃１９を固定刃１８の上壁３７の傾斜上端側へ移動する向きに押し付けることができる。可動刃１９の上壁４９に、上壁３７の傾斜上端側へ向かう可動刃ばね６１の付勢力の分力が作用するからである。これにより、可動刃１９は、固定刃１８の上壁３７はもちろん、縦壁３６にも密着する状態で押し付けられることとなり、したがって、第１・第２の両切刃部３８・３９・５０・５１の切れ味を向上して髭を効果的に切断できる。
When the angles θ1 and θ2 sandwiched between the vertical walls 36 and 48 and the upper walls 37 and 49 are set to acute angles, the movable blade 19 is in close contact with the fixed blade 18 by the movable blade spring 61. 19 can be pressed in a direction to move toward the upper end of the upper wall 37 of the fixed blade 18. This is because a component force of the urging force of the movable blade spring 61 directed toward the inclined upper end side of the upper wall 37 acts on the upper wall 49 of the movable blade 19. As a result, the movable blade 19 is pressed against the vertical wall 36 as well as the upper wall 37 of the fixed blade 18, and therefore the first and second both cutting blade portions 38, 39, 50, The sharpness of 51 can be improved and a wrinkle can be cut | disconnected effectively.
可動刃１９側の折曲げ角度θ２と、固定刃１８側の折曲げ角度θ１とが同じに設定してある場合には、加工のばらつきによって、固定刃１８側の折曲げ角度θ１が設定角度より小さい場合や、可動刃１９側の折曲げ角度θ２が設定角度より大きい場合などに、両刃１８・１９の折り曲げ部分の内面を密着させることができず、切れ味が損なわれる。しかし、可動刃１９側の折曲げ角度θ２が、固定刃１８側の折曲げ角度θ１より僅かに小さく設定してあると、先のように、摺動面に隙間が生じるのを避けながら、可動刃１９を固定刃１８に確実に密着させて切れ味を向上することができる。
When the bending angle θ2 on the movable blade 19 side and the bending angle θ1 on the fixed blade 18 side are set to be the same, the bending angle θ1 on the fixed blade 18 side is larger than the set angle due to processing variations. When it is small, or when the bending angle θ2 on the movable blade 19 side is larger than the set angle, the inner surfaces of the bent portions of the two blades 18 and 19 cannot be brought into close contact with each other, and the sharpness is impaired. However, if the bending angle θ2 on the movable blade 19 side is set slightly smaller than the bending angle θ1 on the fixed blade 18 side, the movable blade 19 can be moved while avoiding a gap on the sliding surface as described above. The sharpness can be improved by securely bringing the blade 19 into close contact with the fixed blade 18.
固定刃１８を固定刃支持体５９に隙間を介して対向する状態で固定し、両者１８・５９の対向隙間Ｅに可動刃１９および可動刃支持体６０を配置して固定刃支持体５９で摺動可能に支持すると、第１切断刃１１の前後厚み寸法を可能な限り小さくしてコンパクト化できる。これは、左右方向に往復駆動される可動刃１９および可動刃支持体６０を、固定刃１８および固定刃支持体５９で、互いに前後に入り込んだ状態で前後に挟み保持して、前後方向に無駄なスペースを生じることなく、第１切断刃１１を構成できるからである。第１切断刃１１の前後厚み寸法を小さくできる分だけ、かみそりヘッド６をコンパクト化できることにもなる。
The fixed blade 18 is fixed to the fixed blade support 59 in a state of being opposed to the fixed blade support 59 through a gap, and the movable blade 19 and the movable blade support 60 are disposed in the opposed gap E between the two 18 and 59 and the fixed blade support 59 is slid. When supported so as to be movable, the thickness dimension in the front-rear direction of the first cutting blade 11 can be made as small as possible to make it compact. This is because the movable blade 19 and the movable blade support 60 that are reciprocally driven in the left-right direction are sandwiched and held by the fixed blade 18 and the fixed blade support 59 in the front-rear direction and are wasted in the front-rear direction. This is because the first cutting blade 11 can be configured without generating a large space. The razor head 6 can also be made compact by the amount that the front and rear thickness dimensions of the first cutting blade 11 can be reduced.
固定刃１８の後端において第１切刃部３８の小刃４３を下向きに折り曲げ、小刃４３の折り曲げ部の下方に隣接する個所に防護壁６３を設けると、かみそりヘッド６に落下衝撃や衝突衝撃が作用するような状況において、衝撃力を防護壁６３で受け止めて、小刃４３の突端に大きな外力が作用するのをよく防止できる。したがって、逆Ｌ字状の固定刃１８後端の小刃４３が変形し、あるいは第１切断刃１１が破損するのを防止して、電気かみそりの耐久性を向上できる。
When the small blade 43 of the first cutting blade portion 38 is bent downward at the rear end of the fixed blade 18 and a protective wall 63 is provided at a location adjacent to the lower portion of the bent portion of the small blade 43, the razor head 6 is subjected to a drop impact or collision. In a situation where an impact is applied, the impact force is received by the protective wall 63, and it is possible to well prevent a large external force from acting on the tip of the small blade 43. Therefore, the small blade 43 at the rear end of the inverted L-shaped fixed blade 18 is prevented from being deformed or the first cutting blade 11 is damaged, and the durability of the electric razor can be improved.
可動刃１９を可動刃支持体６０に組み付けた状態において、左右の刃形保持壁５７を上突壁６７で支持し、さらに可動刃１９の縦壁４８に設けた取付座５８を可動刃支持体６０の装着座６８に固定する可動刃構造によれば、可動刃１９と可動刃支持体６０とを互いに補強しあう状態で一体して、可動刃構造を堅牢化できる。しかも、可動刃１９と可動刃支持体６０とを、スペースの無駄がない状態でコンパクトに構成して、第１切断刃１１を小形化するのに寄与できる。
In a state where the movable blade 19 is assembled to the movable blade support 60, the left and right blade-shaped holding walls 57 are supported by the upper projecting wall 67, and a mounting seat 58 provided on the vertical wall 48 of the movable blade 19 is further supported by the movable blade support. According to the movable blade structure fixed to the mounting seat 68 of 60, the movable blade structure and the movable blade support body 60 can be integrated together in a state where they are reinforced with each other, thereby making the movable blade structure robust. In addition, the movable blade 19 and the movable blade support 60 can be compactly configured with no waste of space, thereby contributing to downsizing the first cutting blade 11.
固定刃１８の縦壁３６と上壁３７との折り曲げ部の内面および／または外面に溝１０５を凹み形成すると、平板状の固定刃１８のブランク材を逆Ｌ字状に折り曲げる際の折り曲げ抵抗を、溝１０５によって小さくできる。したがって、先のブランク材のプレス加工をより簡単にしかも正確に行なって、固定刃１８の形状や寸法のばらつきを抑止できる。また、凹みからなる溝１０５を設ける分だけ、固定刃１８の内外面壁の表面積を大きくして、可動刃１９の摺動摩擦で発生する熱の放熱効果を向上できる。
When the groove 105 is formed in the inner surface and / or the outer surface of the bent portion between the vertical wall 36 and the upper wall 37 of the fixed blade 18, the bending resistance when the blank material of the flat fixed blade 18 is bent in an inverted L shape is reduced. The groove 105 can reduce the size. Therefore, it is possible to more easily and accurately press the blank material, and to suppress variations in the shape and dimensions of the fixed blade 18. In addition, the surface area of the inner and outer surface walls of the fixed blade 18 can be increased by the amount of provision of the groove 105 made of a recess, and the heat dissipation effect of heat generated by the sliding friction of the movable blade 19 can be improved.
エッチング処理された金属板材にプレス加工を施して固定刃１８を形成する場合には、エッチング処理過程において溝１０５をハーフエッチング加工で形成することにより、余分な手間をかける必要もなく溝１０５を正確に形成できる。さらに、他の加工法に比べて、溝１０５の形状および形成位置を正確に形成できるので、以後のプレス加工をより正確に行なって、固定刃１８の形状や寸法のばらつきを最小限化できる。
When the fixed blade 18 is formed by pressing the etched metal plate material, the groove 105 can be accurately formed without the need for extra labor by forming the groove 105 by half-etching during the etching process. Can be formed. Furthermore, since the shape and formation position of the groove 105 can be accurately formed as compared with other processing methods, the subsequent press working can be performed more accurately, and variations in the shape and dimensions of the fixed blade 18 can be minimized.
固定刃１８の第１切刃部３８の後端縁を平面視において外突湾曲線状に形成すると、下あごなどの凹んだ肌面の髭を切断する際に、第１切断刃１１の第１切刃部３８を肌面にフィットさせて髭切断を的確に行なえる。
When the rear end edge of the first cutting edge portion 38 of the fixed blade 18 is formed in an outwardly curved line shape in a plan view, the first cutting edge 11 of the first cutting edge 11 is cut when cutting a wrinkle on a concave skin surface such as a lower jaw. The cutting edge 38 can be fitted to the skin surface and the heel cutting can be performed accurately.
第１切刃部３８に形成される刃穴４２と小刃４３のそれぞれを、かみそりヘッド６の後ろ側へ向かって拡がる向きに放射配置すると、横臥姿勢の電気かみそりを下あごに沿って起立させながら髭切断を行なうとき、肌面に倒れこんだ髭を放射配置された刃穴４２で効果的に捕捉して切断できる。また、刃穴４２に誘い込んだ髭を小刃４３の基端側へ案内して、捕捉した髭を確実に切断できる。
When each of the blade hole 42 and the small blade 43 formed in the first cutting blade portion 38 is radially arranged so as to expand toward the rear side of the razor head 6, the recumbent posture of the electric razor is raised along the lower jaw. However, when cutting the wrinkles, the wrinkles that have fallen on the skin surface can be effectively captured and cut by the blade holes 42 that are radially arranged. In addition, the trap that has been led into the blade hole 42 is guided to the proximal end side of the small blade 43 so that the trapped trap can be reliably cut.
（実施例） 図１ないし図１５は本発明に係るマルチ刃構造の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を有する。本体ケース１の前面にはスイッチパネル２が設けてあり、その上下にモーター起動用のスイッチノブ３と、電気かみそりの運転状態を表示する表示部４が設けてある。本体ケース１の後面には、きわ剃り刃ユニット５が設けてある。なお、実施例の内容は、理解を容易化しさらに説明の便宜上、図１、図２および図４に示す交差矢印と前後、左右、上下の表示を一応の基準として説明するが、この方向の特定は電気かみそりの絶対的な前後、左右、上下を意味するものではない。
(Example) FIG. 1 thru | or FIG. 15 shows the Example of the electric shaver of the multiblade structure based on this invention. In FIG. 2, the electric razor has a main body case 1 and an operation unit assembled to the main body case 1. A switch panel 2 is provided on the front surface of the main body case 1, and a switch knob 3 for starting the motor and a display unit 4 for displaying the operating state of the electric razor are provided above and below the switch panel 2. A shaving blade unit 5 is provided on the rear surface of the main body case 1. The contents of the embodiment will be described with reference to the cross arrows shown in FIGS. 1, 2 and 4 and the front, rear, left and right and top and bottom displays for the sake of convenience and ease of explanation. Does not mean absolute front, back, left, or top of an electric razor.
作動ユニットは、その下半側を占める電装品ユニットと、電装品ユニットの上部に設けられるかみそりヘッド６とで構成してある。電装品ユニットは、内ケースに回路基板と２次電池７などを組み込んで構成してあり、回路基板には、先のスイッチノブ３で切り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、および表示部４の光源となるＬＥＤなどが実装してある。
The operation unit includes an electrical component unit that occupies the lower half of the operation unit, and a razor head 6 provided on the upper portion of the electrical component unit. The electrical component unit is configured by incorporating the circuit board and the secondary battery 7 in the inner case. The circuit board includes a switch that is switched by the previous switch knob 3, an electronic component that constitutes the control circuit, And LED etc. used as the light source of the display part 4 are mounted.
かみそりヘッド６は、ヘッドフレーム８と、その下面に固定されるモーター９およびモーターホルダ１０と、かみそりヘッド６の上部に配置される４個の切断刃１１〜１４と、モーター９の動力を往復動力に変換して各切断刃１１〜１４に伝動する駆動構造と、ヘッドフレーム８に対して着脱される外刃ホルダー１５などで構成してある。かみそりヘッド６の全体は、先の内ケースで上下フロート可能に、しかも左右傾動、および前後傾動可能に支持されている。また、モーター９および回路基板を含む電装品ユニットは、かみそりヘッド６と内ケースとの間に設けたシール体で密封してある。
The razor head 6 includes a head frame 8, a motor 9 and a motor holder 10 fixed to the lower surface thereof, four cutting blades 11 to 14 disposed on the upper portion of the razor head 6, and the power of the motor 9 as reciprocating power. And a drive structure that is transmitted to the cutting blades 11 to 14 and an outer blade holder 15 that is attached to and detached from the head frame 8. The entire razor head 6 is supported by the previous inner case so as to be able to float up and down, and to tilt left and right and tilt back and forth. Further, the electrical component unit including the motor 9 and the circuit board is sealed with a sealing body provided between the razor head 6 and the inner case.
各切断刃１１〜１４は、粗剃り用の第１切断刃１１と、仕上げ剃り用の第２切断刃１２と、粗剃り用の第３切断刃１３と、仕上げ剃り用の第４切断刃１４とからなり、かみそりヘッド６の後側から前側へ向かって記載順に配置してある（図５参照）。粗剃り用の第１切断刃１１と第３切断刃１３は、主に長毛やくせ髭を切断するために設けられており、いずれも固定刃１８・２２および可動刃１９・２３のそれぞれがスリット刃として形成してある。仕上げ剃り用の第２切断刃１２と第４切断刃１４は、短毛を仕上げ切断するために設けられており、いずれも固定刃２０・２４が網刃で形成され、可動刃２１・２５がスリット刃で形成してある。
The cutting blades 11 to 14 are a first cutting blade 11 for rough shaving, a second cutting blade 12 for finishing shaving, a third cutting blade 13 for rough shaving, and a fourth cutting blade 14 for finishing shaving. These are arranged in the order of description from the rear side to the front side of the razor head 6 (see FIG. 5). The first cutting blade 11 and the third cutting blade 13 for rough shaving are provided mainly for cutting long hairs and wrinkles. Both of the fixed blades 18 and 22 and the movable blades 19 and 23 are slits. It is formed as a blade. The 2nd cutting blade 12 and the 4th cutting blade 14 for finishing shaving are provided in order to finish and cut a short hair, and all are the fixed blades 20 and 24 formed with a mesh blade, and the movable blades 21 and 25 are formed. It is formed with a slit blade.
図３および図５に示すように、モーター９の回転動力は、ヘッドフレーム８の内部に配置した前後一対の振動子２８・２９で往復動力に変換されたのち、第２切断刃１２と第４切断刃１４の可動刃２１・２５に伝動される。さらに、前後の各振動子２８・２９の駆動軸３０・３１に固定した駆動ピース３２・３３を介して、第１切断刃１１と第３切断刃１３の可動刃１９・２３に伝動される。駆動ピース３２には、きわ剃り刃ユニット５に往復動力を伝動する駆動アーム３４が一体に設けてある。振動子２８・２９は、回転動力を往復動力に変換する過程で、左右方向に往復変位する。
As shown in FIGS. 3 and 5, the rotational power of the motor 9 is converted into reciprocating power by a pair of front and rear vibrators 28 and 29 arranged inside the head frame 8, and then the second cutting blade 12 and the fourth It is transmitted to the movable blades 21 and 25 of the cutting blade 14. Further, it is transmitted to the movable blades 19, 23 of the first cutting blade 11 and the third cutting blade 13 through the drive pieces 32, 33 fixed to the drive shafts 30, 31 of the front and rear vibrators 28, 29. The drive piece 32 is integrally provided with a drive arm 34 that transmits reciprocating power to the shaving blade unit 5. The vibrators 28 and 29 reciprocate in the left-right direction in the process of converting rotational power into reciprocating power.
図６および図７に示すように、第１切断刃１１の固定刃１８は、垂直の縦壁３６と、縦壁３６に連続して後向きに鋭角に折り曲げられる上壁３７とで逆Ｌ字状に形成してあり、上壁３７の全体が第２切断刃１２へ向かって上り傾斜させてある。固定刃１８には、第１切刃部３８と第２切刃部３９とが形成されており、両切刃部３８・３９は、上壁３７の前後中途部において左右方向に連続する補強リブ４０で前後に区分されている。また、固定刃１８の左右両側には、切刃を構成しない刃形保持壁４１が逆Ｌ字状に形成してあり、これらの刃形保持壁４１は先の補強リブ４０を介して繋がっている。縦壁３６の下部両側には、一対の取付座４６が階段状に折り曲げ形成してある（図７参照）。
As shown in FIG. 6 and FIG. 7, the fixed blade 18 of the first cutting blade 11 has an inverted L-shape formed by a vertical vertical wall 36 and an upper wall 37 that is continuously bent to an acute angle in a rearward direction. The entire upper wall 37 is inclined upward toward the second cutting blade 12. The fixed blade 18 is formed with a first cutting blade portion 38 and a second cutting blade portion 39, and both cutting blade portions 38, 39 are reinforcing ribs that continue in the left-right direction in the front-rear midway portion of the upper wall 37. 40 is divided into front and rear. Further, on both the left and right sides of the fixed blade 18, blade-shaped holding walls 41 that do not constitute a cutting blade are formed in an inverted L shape, and these blade-shaped holding walls 41 are connected via the above-described reinforcing ribs 40. Yes. A pair of mounting seats 46 are formed in a stepped manner on both sides of the lower portion of the vertical wall 36 (see FIG. 7).
図８に示すように、第１切刃部３８は、上壁３７の後端側（遊端側）にスリット状の刃穴４２とリブ状の小刃４３を交互に形成して構成してある。刃穴４２を区分する小刃４３で肌面が傷付けられるのを防ぐために、各小刃４３の後端は下向きに折り曲げてある（図７参照）。この折り曲げ部分、すなわち第１切刃部３８の後端縁（遊端縁）と、第２切刃部３９の後端縁（遊端縁）とは、それぞれ平面視において外突湾曲線状に形成してある（図８参照）。第２切刃部３９の前端縁（折曲縁）は、平面視において直線状に形成してある。
As shown in FIG. 8, the first cutting edge portion 38 is configured by alternately forming slit-like blade holes 42 and rib-like small blades 43 on the rear end side (free end side) of the upper wall 37. is there. In order to prevent the skin surface from being damaged by the small blades 43 that divide the blade holes 42, the rear ends of the small blades 43 are bent downward (see FIG. 7). The bent portion, that is, the rear end edge (free end edge) of the first cutting edge portion 38 and the rear end edge (free end edge) of the second cutting edge portion 39 are each in an outwardly curved line shape in plan view. It is formed (see FIG. 8). The front end edge (bending edge) of the second cutting edge portion 39 is formed in a straight line in plan view.
上記のように、第２切刃部３９の前端縁を直線状に形成し、その後端縁を外突湾曲状に形成すると、左右中央部付近における第２切刃部３９の前後長さを充分に確保して、髭の切断機会を向上しながら、左右両端付近の切刃の前後長さを短くして切刃の構造強度を向上できる。これは、各切断刃１１〜１４においては、左右両端で髭が切断される状況に比べて、左右中央部で髭が切断される状況のほうが圧倒的に多く、しかも左右中央部付近における切刃の前後長さが長い分だけ、髭の切断機会を増加できるからである。
As described above, when the front end edge of the second cutting edge portion 39 is formed in a straight line shape and the rear end edge thereof is formed in a protruding curve shape, the front and rear length of the second cutting edge portion 39 in the vicinity of the left and right center portion is sufficient. It is possible to improve the structural strength of the cutting blade by shortening the longitudinal length of the cutting blade near the left and right ends while improving the cutting opportunity of the scissors. This is because, in each of the cutting blades 11 to 14, the situation in which the wrinkles are cut at the left and right central portions is overwhelmingly more than the situation in which the wrinkles are cut at both left and right ends, and the cutting blades in the vicinity of the left and right central portions This is because the opportunity for cutting the ridges can be increased by the longer the front and rear length of the.
第２切刃部３９は、縦壁３６から上壁３７の補強リブ４０にわたって髭導入用のスリット状の刃穴４４とリブ状の小刃４５を交互に形成して構成する。小刃４５は、逆Ｌ字状に折り曲げられており、縦壁３６側の刃面と上壁３７側の刃面の両者で髭切断を行なえる。第２切刃部３９の刃穴４４の隣接ピッチと、先の第１切刃部３８の刃穴４２の隣接ピッチとは同じであるが、両刃穴４２・４４と小刃４３・４５が互い違いになるように配置してある。このように、補強リブ４０を境界にして、刃穴４２・４４および小刃４３・４５を互い違いに配置すると、刃穴４２・４４および小刃４３・４５の前後方向の切刃長を大きくして、その分だけ髭切断を効果的に行なえる。各刃穴４２・４４と各小刃４３・４５は、第１切刃部３８の後端縁の湾曲中心を通る半径線に沿って放射状に形成してある。つまり、各刃穴４２・４４と各小刃４３・４５は、かみそりヘッド６の後ろ側（遊端側）へ向かって拡がる向きに放射配置してある。
The second cutting edge portion 39 is configured by alternately forming slit-like blade holes 44 and rib-like small blades 45 for introducing scissors from the vertical walls 36 to the reinforcing ribs 40 of the upper wall 37. The small blade 45 is bent in an inverted L shape, and can perform scissors cutting on both the blade surface on the vertical wall 36 side and the blade surface on the upper wall 37 side. The adjacent pitch of the blade hole 44 of the second cutting edge portion 39 and the adjacent pitch of the blade hole 42 of the first cutting blade portion 38 are the same, but the two blade holes 42 and 44 and the small blades 43 and 45 are staggered. It is arranged to become. As described above, when the blade holes 42 and 44 and the small blades 43 and 45 are alternately arranged with the reinforcing rib 40 as a boundary, the cutting edge length in the front-rear direction of the blade holes 42 and 44 and the small blades 43 and 45 is increased. Therefore, it is possible to cut the cocoons effectively. The blade holes 42 and 44 and the small blades 43 and 45 are formed radially along a radial line passing through the center of curvature of the rear end edge of the first cutting blade portion 38. That is, the blade holes 42 and 44 and the small blades 43 and 45 are radially arranged so as to expand toward the rear side (free end side) of the razor head 6.
固定刃１８は、ステンレス板材にエッチング処理を施したのち、プレス機で折り曲げ加工を施して形成するが、刃形保持壁４１の折り曲げ加工を容易化するために、縦壁３６と上壁３７の折り曲げ部の内面に溝１０５が形成してある。この溝１０５は、エッチング処理によって各刃穴４２・４４と各小刃４３・４５を形成する過程で、ハーフエッチングすることにより形成され、図６に示すように各刃穴４３と平行になる状態で、一定間隔おきに凹み形成してある。溝１０５は折り曲げ部の内面である必要はなく、外面側に形成してあってもよい。
The fixed blade 18 is formed by etching the stainless steel plate and then bending it with a press. In order to facilitate the bending of the blade holding wall 41, the vertical blade 36 and the upper wall 37 are formed. A groove 105 is formed on the inner surface of the bent portion. The groove 105 is formed by half-etching in the process of forming the blade holes 42 and 44 and the small blades 43 and 45 by etching, and is parallel to the blade holes 43 as shown in FIG. Thus, dents are formed at regular intervals. The groove 105 does not need to be the inner surface of the bent portion, and may be formed on the outer surface side.
第１切断刃１１の可動刃１９は、垂直の内縦壁（縦壁）４８と、内縦壁４８に連続して後向きに鋭角に折り曲げられる内上壁（上壁）４９とで逆Ｌ字状に形成する（図７参照）。内上壁４９の後部には、固定刃１８の第１切刃部３８に対応する第１切刃部５０が形成してあり、内縦壁４８と内上壁４９との隣接部分には、固定刃１８の第２切刃部３９に対応する第２切刃部５１が形成してある。両切刃部５０・５１は、内上壁４９の前後中途部において左右方向に連続する補強リブ５２で前後に区分されている。
The movable blade 19 of the first cutting blade 11 has an inverted L-shape with a vertical inner vertical wall (vertical wall) 48 and an inner upper wall (upper wall) 49 that is bent rearwardly at an acute angle continuously to the inner vertical wall 48. (See FIG. 7). A first cutting edge portion 50 corresponding to the first cutting edge portion 38 of the fixed blade 18 is formed at the rear portion of the inner upper wall 49, and an adjacent portion between the inner vertical wall 48 and the inner upper wall 49 is A second cutting blade portion 51 corresponding to the second cutting blade portion 39 of the fixed blade 18 is formed. The two cutting blade portions 50 and 51 are divided forward and backward by reinforcing ribs 52 that are continuous in the left-right direction in the front-rear midway portion of the inner upper wall 49.
可動刃１９の左右両側には、切刃を構成しない刃形保持壁５７が逆Ｌ字状に形成してあり、これらの刃形保持壁５７は先の補強リブ５２を介して繋がっている。内縦壁４８の下部中央には階段状の取付座５８が後向きに折り曲げ形成してある。第１・第２の両切刃部５０・５１は、固定刃１８の第１切刃部３８および第２切刃部３９と同様に、刃穴５３・５５と小刃５４・５６が互い違いになるように、しかも後側へ向かって拡がる向きに放射配置した状態で形成してある。また、第１切刃部５０の後端縁と先に述べた補強リブ５２とが、平面視において外突湾曲線状に形成してある点も同じである。刃穴５３・５５および小刃５４・５６を互い違いに配置すると、先の固定刃１８と同様に、刃穴５３・５５および小刃５４・５６の前後方向の切刃長を大きくして、その分だけ髭切断を効果的に行なえる。可動刃１９も、固定刃１８と同様に、ステンレス板材にエッチング処理を施したのちプレス機で折り曲げ加工を施して形成してある。
On both the left and right sides of the movable blade 19, blade-shaped holding walls 57 that do not constitute cutting blades are formed in an inverted L shape, and these blade-shaped holding walls 57 are connected via the reinforcing ribs 52. A step-like mounting seat 58 is bent backward at the center of the lower portion of the inner vertical wall 48. Both the first and second cutting blade portions 50 and 51 have the blade holes 53 and 55 and the small blades 54 and 56 alternately, like the first cutting blade portion 38 and the second cutting blade portion 39 of the fixed blade 18. In addition, it is formed in a state in which it is radially arranged so as to expand toward the rear side. Moreover, the point which the rear-end edge of the 1st cutting blade part 50 and the reinforcement rib 52 described previously are formed in the shape of an outward curve in planar view is also the same. When the blade holes 53 and 55 and the small blades 54 and 56 are arranged alternately, the cutting edge length in the front-rear direction of the blade holes 53 and 55 and the small blades 54 and 56 is increased in the same manner as the fixed blade 18 described above. You can cut the cocoons effectively as much as you can. Similarly to the fixed blade 18, the movable blade 19 is formed by subjecting the stainless steel plate material to etching and then bending it with a press machine.
固定刃１８の縦壁３６と上壁３７が挟む角度（折曲げ角度）θ１、および可動刃１９の内縦壁４８と内上壁４９が挟む角度（折曲げ角度）θ２はそれぞれ鋭角に設定してある。具体的には前者角度θ１を６０度とし、後者角度θ２は５９度に設定している。このように、可動刃１９の折曲げ角度θ２を固定刃１８の折曲げ角度θ１より僅かに小さく設定すると、組み付け状態において両刃１８・１９を密着させて滑らかに相対摺動でき、とくに第２切刃部３９の折り曲げ部分における固定刃１８と可動刃１９の密着度を高めて髭切断を確実に行なえる。
The angle (bending angle) θ1 between the vertical wall 36 and the upper wall 37 of the fixed blade 18 and the angle (bending angle) θ2 between the inner vertical wall 48 and the inner upper wall 49 of the movable blade 19 are set to acute angles. It is. Specifically, the former angle θ1 is set to 60 degrees, and the latter angle θ2 is set to 59 degrees. As described above, when the bending angle θ2 of the movable blade 19 is set to be slightly smaller than the bending angle θ1 of the fixed blade 18, the two blades 18 and 19 can be brought into close contact with each other in the assembled state, and can smoothly slide relative to each other. The adhesion between the fixed blade 18 and the movable blade 19 at the bent portion of the blade portion 39 is increased, and the scissors can be cut reliably.
第１切断刃１１の固定刃１８は、プラスチック成形された固定刃支持体５９に溶着固定してあり、同様に可動刃１９はプラスチック成形されたＴ字状の可動刃支持体６０に溶着固定してある。可動刃支持体６０には、可動刃１９に加えて、可動刃１９を固定刃１８に押し付け付勢する板ばね製の可動刃ばね６１が固定してある。
The fixed blade 18 of the first cutting blade 11 is welded and fixed to a plastic molded fixed blade support 59. Similarly, the movable blade 19 is welded and fixed to a plastic molded T-shaped movable blade support 60. It is. In addition to the movable blade 19, a movable blade spring 61 made of a leaf spring that presses and urges the movable blade 19 against the fixed blade 18 is fixed to the movable blade support 60.
図６および図７において固定刃支持体５９は、左右に引き伸ばされた逆凸字状の縦壁１１０を主構造壁にして、その前面側の左右両側に階段状の側壁６４を設け、縦壁１１０の前面左右に一対の装着座６５を膨出形成したプラスチック成形品からなる。側壁６４および装着座６５の間は段落ち状に凹ませてあり、この凹み部分１１１に可動刃１９および可動刃支持体６０を収容する。縦壁１１０の上部が、固定刃１８の小刃４３の損傷を防ぐ防護壁６３となっている。装着座６５には、固定刃１８の取付座４６を溶着固定するための溶着ピン１１２が設けてある。符号１１３は固定刃支持体５９の最前側に位置する側壁６４の前端面である。先の装着座６５は、前端面１１３よりも後側に位置しており、凹み部分１１１は装着座６５よりさらに後側に位置している。
6 and 7, the fixed blade support 59 has a vertical wall 110 with an inverted convex shape extending to the left and right as a main structural wall, and has stepped side walls 64 on both the left and right sides of the front surface. It consists of a plastic molded product in which a pair of mounting seats 65 bulges on the front left and right of 110. The side wall 64 and the mounting seat 65 are recessed in a stepped manner, and the movable blade 19 and the movable blade support 60 are accommodated in the recessed portion 111. The upper portion of the vertical wall 110 serves as a protective wall 63 that prevents damage to the small blade 43 of the fixed blade 18. The mounting seat 65 is provided with a welding pin 112 for welding and fixing the mounting seat 46 of the fixed blade 18. Reference numeral 113 denotes a front end face of the side wall 64 located on the foremost side of the fixed blade support 59. The previous mounting seat 65 is located on the rear side of the front end face 113, and the recessed portion 111 is located further on the rear side than the mounting seat 65.
可動刃支持体６０は、可動刃１９の縦壁３６を支持する主面壁６６と、主面壁６６の両側に突設されて可動刃１９の左右両端の刃形保持壁５７を支持する逆Ｌ字状の上突壁６７とを一体に備えている。主面壁６６の前面側には、可動刃１９を組むための装着座６８を設け、その左右２個所に溶着ピン１１５を前向きに突設している。図７に示すように、装着座６８は、主面壁６６の前面１２０より後側へ凹ませてある。組み立ての過程では、図７に示すように、可動刃１９の取付座５８を可動刃支持体６０の装着座６８にあてがって、装着座６８に設けた係合穴１２１溶着ピン１１５で溶着固定し、さらに、可動刃支持体６０後面上部のばね受溝１１６に可動刃ばね６１を差し込み係合して溶着固定する。この組み付け状態において、階段状に折り曲げた可動刃１９の取付座５８を、主面壁６６の前面１２０より後側に位置する装着座６８に溶着固定するので、溶着後の溶着ピン１１５の溶着頭部が、主面壁６６の前面１２０より前方へ突出するのを防止できる。したがって、可動刃１９の前後寸法を小さくして、コンパクト化を実現できる。
The movable blade support 60 has a main surface wall 66 that supports the vertical wall 36 of the movable blade 19, and an inverted L shape that protrudes from both sides of the main surface wall 66 and supports the blade-shaped holding walls 57 at both the left and right sides of the movable blade 19. The upper protruding wall 67 is integrally provided. A mounting seat 68 for assembling the movable blade 19 is provided on the front surface side of the main surface wall 66, and welding pins 115 are projected forward at two places on the left and right sides thereof. As shown in FIG. 7, the mounting seat 68 is recessed rearward from the front surface 120 of the main surface wall 66. In the process of assembling, as shown in FIG. 7, the mounting seat 58 of the movable blade 19 is applied to the mounting seat 68 of the movable blade support 60 and is welded and fixed by the engagement holes 121 welding pins 115 provided in the mounting seat 68. Further, the movable blade spring 61 is inserted into and engaged with the spring receiving groove 116 on the upper rear surface of the movable blade support 60 and fixed by welding. In this assembled state, the mounting seat 58 of the movable blade 19 bent in a step shape is welded and fixed to the mounting seat 68 positioned on the rear side of the front surface 120 of the main surface wall 66, so that the welding head of the welding pin 115 after welding Can be prevented from projecting forward from the front surface 120 of the main surface wall 66. Therefore, the size of the movable blade 19 can be reduced by reducing the front-rear dimension.
この状態の可動刃支持体６０を、固定刃支持体５９の前側の凹み部分１１１に組み付けたのち、固定刃１８の取付座４６に設けた係合穴１１８を固定刃支持体５９の装着座６５の溶着ピン１１２に係合し、溶着ピン１１２の突端を溶着して、固定刃１８を固定刃支持体５９と一体化する。これにより第１切断刃１１の全体がカセット化される。
After the movable blade support 60 in this state is assembled to the recessed portion 111 on the front side of the fixed blade support 59, the engagement hole 118 provided in the mounting seat 46 of the fixed blade 18 is provided with the mounting seat 65 of the fixed blade support 59. The fixed blade 18 is integrated with the fixed blade support 59 by engaging the welding pin 112 and welding the protruding end of the welding pin 112. As a result, the entire first cutting blade 11 is made into a cassette.
この組み付け状態において、可動刃１９と可動刃支持体６０とは、図１に示すように固定刃１８の縦壁３６と、固定刃支持体５９の縦壁１１０の前面との間の対向隙間Ｅに収容されて、可動刃ばね６１のばね腕が装着座６５の上面で受け止められており、したがって、可動刃１９は可動刃ばね６１で押し上げ付勢されて固定刃１８の内面に密着している。カセット化された第１切断刃１１の全体で見ると、図１に示すように、固定刃１８の前後寸法Ｗ２は、固定刃支持体５９の前後寸法Ｗ１より僅かに小さく設定してあり、固定刃１８が固定刃支持体５９の前後寸法Ｗ１の範囲内に収まるようにしてある。また、階段状に折り曲げた固定刃１８の取付座４６を、側壁６４の前端面１１３よりも後側に位置する装着座６５に溶着固定するので、溶着後の溶着ピン１１２の溶着頭部が、側壁６４の前端面１１３より前方へ突出するのを防止できる。これにより、第１切断刃全体の前後寸法（Ｗ１）を小さくしてコンパクト化を実現できる。
In this assembled state, the movable blade 19 and the movable blade support 60 are opposed to each other between the vertical wall 36 of the fixed blade 18 and the front surface of the vertical wall 110 of the fixed blade support 59 as shown in FIG. Thus, the spring arm of the movable blade spring 61 is received by the upper surface of the mounting seat 65, so that the movable blade 19 is pushed up and biased by the movable blade spring 61 and is in close contact with the inner surface of the fixed blade 18. . When viewing the entire first cutting blade 11 in a cassette form, as shown in FIG. 1, the front-rear dimension W2 of the fixed blade 18 is set slightly smaller than the front-rear dimension W1 of the fixed blade support 59, and is fixed. The blade 18 is set within the range of the front-rear dimension W1 of the fixed blade support 59. Further, since the mounting seat 46 of the fixed blade 18 bent in a step shape is welded and fixed to the mounting seat 65 located on the rear side of the front end surface 113 of the side wall 64, the welding head of the welding pin 112 after welding is Protruding forward from the front end surface 113 of the side wall 64 can be prevented. Thereby, the front-back dimension (W1) of the whole 1st cutting blade can be made small, and compactization is realizable.
カセット構造の第１切断刃１１は、外刃ホルダー１５の上ケース１６に対して上下フロート自在に組み付けられて、両者１１・１５の間に配置した左右一対の第１フロートばね７０で押し上げ付勢してある（図６参照）。第１フロートばね７０は圧縮コイルバネで構成してある。可動刃支持体６０の下端には、駆動ピース３２と係合するコ字状の受動溝７１が形成してある。外刃ホルダー１５をヘッドフレーム８に装着した状態では、受動溝７１が駆動ピース３２の上端に連結されるので、モーター９の起動と同時に可動刃１９を往復駆動できる。
The first cutting blade 11 having a cassette structure is assembled to the upper case 16 of the outer blade holder 15 so as to float freely, and is pushed up and biased by a pair of left and right first float springs 70 disposed between the both 11 and 15. (See FIG. 6). The first float spring 70 is composed of a compression coil spring. A U-shaped passive groove 71 that engages with the drive piece 32 is formed at the lower end of the movable blade support 60. In a state where the outer blade holder 15 is mounted on the head frame 8, the passive groove 71 is connected to the upper end of the drive piece 32, so that the movable blade 19 can be driven to reciprocate simultaneously with the activation of the motor 9.
図９に示すように、第２切断刃１２の固定刃２０は電鋳法で形成した網刃からなり、外刃フレーム７３で逆Ｕ字状に保形されてカセット化してある。外刃フレーム７３は、外刃ホルダー１５に対して上下フロート自在に組み付けてある。スリット刃構造の内刃２１は、逆Ｕ字状に折り曲げて形成してあり、内刃フレーム７４に固定されてカセット化してある。内刃フレーム７４は、駆動軸３０に圧嵌係合されて振動子２８と連結されている（図３参照）。この連結状態において、内刃フレーム７４は、駆動軸３０に対して左右傾動でき、さらに上下フロート可能に支持されて、両者３０・６６間に配置した第２フロートばね７５で押し上げ付勢してある。したがって、外刃ホルダー１５をヘッドフレーム８に装着した状態では、可動刃２１が固定刃２０の内面に密着する。
As shown in FIG. 9, the fixed blade 20 of the second cutting blade 12 is a mesh blade formed by electroforming, and is retained in an inverted U shape by an outer blade frame 73 to form a cassette. The outer blade frame 73 is assembled to the outer blade holder 15 so as to freely float up and down. The inner blade 21 having a slit blade structure is formed by bending in an inverted U shape, and is fixed to the inner blade frame 74 to form a cassette. The inner blade frame 74 is press-fitted to the drive shaft 30 and connected to the vibrator 28 (see FIG. 3). In this connected state, the inner blade frame 74 can tilt to the left and right with respect to the drive shaft 30 and is supported so as to be able to float up and down, and is pushed up and biased by a second float spring 75 disposed between the two. . Therefore, when the outer blade holder 15 is attached to the head frame 8, the movable blade 21 is in close contact with the inner surface of the fixed blade 20.
図１０において、第３切断刃１３の外刃２２は、上突状に湾曲する上壁７８と、上壁７８の前後縁に連続する前壁７９および後壁８０を一体に折り曲げて逆樋体状に形成してあり、上壁７８の前後縁のそれぞれにスリット状の刃穴８１とリブ状の小刃８２とが交互に形成してある。上壁７８の前後中央には左右方向に連続する補強リブ８３が形成してある。補強リブ８３で前後に区分されて、同リブ７５の前後縁と直交する一群の刃穴８１と小刃８２とは、互い違いになるように形成してある。上壁７８の湾曲半径は、第２切断刃１２の固定刃２０の湾曲半径より充分に大きく設定してある。
In FIG. 10, the outer cutter 22 of the third cutting blade 13 is an inverted casing obtained by integrally bending an upper wall 78 that curves upward and a front wall 79 and a rear wall 80 that are continuous with the front and rear edges of the upper wall 78. Slit-shaped blade holes 81 and rib-shaped small blades 82 are alternately formed on the front and rear edges of the upper wall 78, respectively. Reinforcing ribs 83 that are continuous in the left-right direction are formed in the front-rear center of the upper wall 78. A group of blade holes 81 and small blades 82 which are divided forward and backward by the reinforcing ribs 83 and are orthogonal to the front and rear edges of the ribs 75 are formed to be staggered. The curvature radius of the upper wall 78 is set sufficiently larger than the curvature radius of the fixed blade 20 of the second cutting blade 12.
図１１に示すように、小刃８２の内周面には微小波形の髭保持部８５が形成してあり、刃穴８１に導入した髭を髭保持部８５で受け止めることにより、髭が小刃８２にそってずれ動くのを防止できるようにしている。外刃２２はその左右両端が一対の刃受ピース８６で支持されて、外刃２２の下面に装着される補強枠８７と共に刃受ピース８６に固定してある。補強枠８７は、左右の刃受ピース８６を繋ぐ左右横長の枠体からなり、その下面左右には内刃２３を外刃２２に密着させるばね腕８８が一体に形成してある（図１０参照）。
As shown in FIG. 11, a small corrugated hook holding portion 85 is formed on the inner peripheral surface of the small blade 82, and the hook is introduced into the blade hole 81 by the hook holding portion 85. 82 so that it can be prevented from shifting along 82. The left and right ends of the outer blade 22 are supported by a pair of blade receiving pieces 86 and fixed to the blade receiving piece 86 together with a reinforcing frame 87 attached to the lower surface of the outer blade 22. The reinforcing frame 87 is formed of a horizontally long frame that connects the left and right blade receiving pieces 86, and spring arms 88 that make the inner blade 23 closely contact the outer blade 22 are integrally formed on the left and right sides of the lower surface (see FIG. 10). ).
第３切断刃１３の内刃２３は逆Ｕ字状に折り曲げて形成してあり、プラスチック成形されたＴ字状の内刃枠９０に溶着固定してある。組み立ての過程では、左右の刃受ピース８６に外刃２２を仮組みして、外刃２２の内部に内刃２３と内刃枠９０を組み付ける。次に、補強枠８７を外刃２２の下面前後に外嵌装着し、外刃２２と補強枠８７を刃受ピース８６に対して溶着固定することにより、第３切断刃１３の全体がカセット化してある。この組み付け状態において、内刃２３はばね腕８８で押し上げ付勢されて、外刃２２の内面に密着している。
The inner blade 23 of the third cutting blade 13 is formed by bending in an inverted U shape and is welded and fixed to a T-shaped inner blade frame 90 formed of plastic. In the assembly process, the outer blade 22 is temporarily assembled to the left and right blade receiving pieces 86, and the inner blade 23 and the inner blade frame 90 are assembled inside the outer blade 22. Next, the reinforcing frame 87 is externally fitted around the lower surface of the outer blade 22, and the outer blade 22 and the reinforcing frame 87 are welded and fixed to the blade receiving piece 86, whereby the entire third cutting blade 13 is converted into a cassette. It is. In this assembled state, the inner blade 23 is pushed up and biased by the spring arm 88 and is in close contact with the inner surface of the outer blade 22.
カセット構造の第３切断刃１３は、外刃ホルダー１５に対して上下フロート自在に組み付けられて、両者１３・１５の間に配置した左右一対の第３フロートばね９１で押し上げ付勢してある（図１０参照）。第３フロートばね９１は圧縮コイルバネからなる。内刃枠９０の下端には、駆動ピース３３と係合するコ字状の受動溝９２が形成してある。外刃ホルダー１５をヘッドフレーム８に装着した状態では、受動溝９２が駆動ピース３３の上端に係合連結されるので、モーター９の起動と同時に内刃２３を往復駆動できる。
The cassette-structured third cutting blade 13 is assembled to the outer blade holder 15 so as to freely float up and down, and is pushed up and biased by a pair of left and right third float springs 91 disposed between the both 13 and 15 ( (See FIG. 10). The third float spring 91 is a compression coil spring. A U-shaped passive groove 92 that engages with the drive piece 33 is formed at the lower end of the inner blade frame 90. In a state where the outer blade holder 15 is mounted on the head frame 8, the passive groove 92 is engaged and connected to the upper end of the drive piece 33, so that the inner blade 23 can be reciprocated simultaneously with the start of the motor 9.
第４切断刃１４は、第２切断刃１２と同じ構造であるので、同じ部材に同じ符号を付してその説明を省略する。
Since the 4th cutting blade 14 is the same structure as the 2nd cutting blade 12, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.
外刃ホルダー１５は、先の第１〜第４の切断刃１１〜１４が組み付けられる上ケース１６と、上ケース１６を支持する下ケース１７とで構成してある（図５参照）。上ケース１６は下ケース１７に対して着脱できる。下ケース１７はヘッドフレーム８に対して着脱でき、ヘッドフレーム８に組み付けた左右一対のロック具９５で装着状態にロック保持される。図１２に示すようにロック具９５には、下ケース１７の内面の凹部９６と係合する前後一対のロック爪９７と、ロック解除ボタン９８とが一体に形成してあり、全体がロックばね９９でロック付勢してある。左右のロック解除ボタン９８をロックばね９９の付勢力に抗して押し込み操作すると、ロック爪９７と凹部９６との係合が解除されるので、外刃ホルダー１５をヘッドフレーム８から取り外すことができる。この状態では図５に示すように、第２切断刃１２と第４切断刃１４の内刃２１・２５のみがヘッドフレーム８側に残る。
The outer blade holder 15 includes an upper case 16 to which the first to fourth cutting blades 11 to 14 are assembled, and a lower case 17 that supports the upper case 16 (see FIG. 5). The upper case 16 can be attached to and detached from the lower case 17. The lower case 17 can be attached to and detached from the head frame 8, and is locked and held in a mounted state by a pair of left and right locks 95 assembled to the head frame 8. As shown in FIG. 12, the lock 95 includes a pair of front and rear lock claws 97 that engage with the recess 96 on the inner surface of the lower case 17, and a lock release button 98 that are integrally formed. The lock is energized. When the left and right lock release buttons 98 are pushed against the urging force of the lock spring 99, the engagement between the lock claw 97 and the recess 96 is released, so that the outer blade holder 15 can be removed from the head frame 8. . In this state, as shown in FIG. 5, only the inner blades 21 and 25 of the second cutting blade 12 and the fourth cutting blade 14 remain on the head frame 8 side.
くせ髭の切断と仕上げ剃りとを効果的に行なうために、第１〜第４の各切断刃１１〜１４の配置関係と突出関係を次のように設定している。既に説明したように、外刃ホルダー１５をヘッドフレーム８に装着した状態において、第１切断刃１１と、第２切断刃１２と、第３切断刃１３と、第４切断刃１４とを、かみそりヘッド６の後ろ側から前側へ向かって記載順に配置する。また、図１３に示すように第２切断刃１２の上端を、第１切断刃１１の上端より上方へ突出させ、第３切断刃１３の上端を第２切断刃１２の上端より上方へ突出させ、さらに、第２切断刃１２の上端を第４切断刃１４の上端と同じ高さにする。
In order to perform cutting of the habit and finishing shaving effectively, the arrangement relationship and the protruding relationship of the first to fourth cutting blades 11 to 14 are set as follows. As already described, with the outer blade holder 15 mounted on the head frame 8, the first cutting blade 11, the second cutting blade 12, the third cutting blade 13, and the fourth cutting blade 14 are razored. The head 6 is arranged in the order of description from the rear side to the front side. Further, as shown in FIG. 13, the upper end of the second cutting blade 12 protrudes upward from the upper end of the first cutting blade 11, and the upper end of the third cutting blade 13 protrudes upward from the upper end of the second cutting blade 12. Furthermore, the upper end of the second cutting blade 12 is set to the same height as the upper end of the fourth cutting blade 14.
各切断刃１１〜１４の突出関係を上記のように設定することにより、第１切断刃１１の上壁３７の前部周面（外周面）と、逆Ｕ字状に湾曲する第２切断刃１２の湾曲面（外周面）を結ぶ接線Ｌを想定するとき、第３切断刃１３の上端は先の接線Ｌより下方に位置しており、しかも第３切断刃１３の上端は第２切断刃１２の上端より上方へ突出している。第１切断刃１１の上壁３７は、先の接線に沿って上り傾斜している。第３切断刃１３を先の接線Ｌより下方に位置させることにより、図１５に示すように喉側からあごの下面へ向かって髭を剃るとき、第３切断刃１３が肌面に強く当るのを避けて、肌当りをソフトなものとすることができる。なお、上壁３７は接線Ｌと同じ傾斜角度で傾斜することができ、その場合の接線Ｌは上壁３７と同じ平面を通る接線とすることが好ましい。
By setting the protruding relationship of the cutting blades 11 to 14 as described above, the front peripheral surface (outer peripheral surface) of the upper wall 37 of the first cutting blade 11 and the second cutting blade that curves in an inverted U shape. Assuming a tangent L connecting the 12 curved surfaces (outer peripheral surfaces), the upper end of the third cutting blade 13 is located below the previous tangent L, and the upper end of the third cutting blade 13 is the second cutting blade. 12 protrudes upward from the upper end of 12. The upper wall 37 of the first cutting blade 11 is inclined upward along the previous tangent line. By positioning the third cutting blade 13 below the previous tangent L, the third cutting blade 13 strongly hits the skin surface when shaving from the throat toward the lower surface of the chin as shown in FIG. Can avoid the skin and soften the skin. The upper wall 37 can be inclined at the same inclination angle as the tangent L, and the tangent L in that case is preferably a tangent passing through the same plane as the upper wall 37.
図１３に示すように、第２切断刃１２の上端と第１切断刃１１の上端との突出寸法差Ｈ１は、第３切断刃１３の上端と第２切断刃１２の上端との突出寸法差Ｈ２より大きく設定してある。このように、Ｈ１＞Ｈ２とすると、口の周囲などの髭を剃る時には、他の切断刃に先行して第３切断刃１３を肌面に接触させて粗剃りを行ない、第３切断刃１３が突出寸法差Ｈ１の分だけ沈み込んだ状態になって始めて、第２切断刃１２を肌面に接触させて仕上げ剃りを行なえることになる。また、電気かみそりを横臥姿勢にしてあごの下の髭を剃る場合には、他の切断刃に先行して第３切断刃１３と第２切断刃１２を同時に肌面に接触させて、粗剃りと仕上げ剃りとを連続して行なえる。つまり、従来のマルチ刃構造の電気かみそりに比べて、髭を剃るべき個所に応じて粗剃り用の第１切断刃１１および第３切断刃１３を有効に活用しながら、さらに効果的に髭切断を行なえることになる。
As shown in FIG. 13, the protrusion dimension difference H1 between the upper end of the second cutting blade 12 and the upper end of the first cutting blade 11 is the difference in protrusion dimension between the upper end of the third cutting blade 13 and the upper end of the second cutting blade 12. It is set larger than H2. As described above, when H1> H2, when shaving around the mouth or the like, the third cutting blade 13 is roughly shaved by bringing the third cutting blade 13 into contact with the skin surface prior to the other cutting blades. However, only after the projection dimension difference H1 has been sunk, the second cutting blade 12 can be brought into contact with the skin surface and finishing shaving can be performed. Also, when shaving the razor under the jaw with the electric razor in a recumbent posture, the third cutting blade 13 and the second cutting blade 12 are simultaneously brought into contact with the skin surface prior to other cutting blades, and the shaving is performed. And finish shave continuously. In other words, compared with the conventional electric shaver having a multi-blade structure, the first cutting blade 11 and the third cutting blade 13 for rough shaving are effectively used in accordance with the portion to be shaved, and the blade is cut more effectively. Can be done.
図４に示すように、各切断刃１１〜１４を平面からみるとき、第１切断刃１１の左右幅寸法をＢ１とし、第２切断刃１２の左右幅寸法をＢ２とし、第３切断刃１３の左右幅寸法をＢ３とし、第４切断刃１４の左右幅寸法をＢ４するとき、Ｂ１＜Ｂ２＜＝Ｂ３＜Ｂ４の関係を満足するように設定してある。
As shown in FIG. 4, when the cutting blades 11 to 14 are viewed from the plane, the left-right width dimension of the first cutting blade 11 is B1, the left-right width dimension of the second cutting blade 12 is B2, and the third cutting blade 13 is used. Is set to satisfy the relationship of B1 <B2 <= B3 <B4, where B3 is the left-right width dimension and B4 is the left-right width dimension of the fourth cutting blade 14.
第１ないし第４の各切断刃１１〜１３の固定刃１８・２０・２２・２４を支持する外刃支持体、具体的には固定刃支持体５９、外刃フレーム７３の左右両端の上端、および左右の刃受ピース８６の上端には、図４および図１４に示すように、それぞれ肌押圧体５９ａ・６５ａ・７６ａ・６５ａが設けてある。これらの肌押圧体５９ａ・６５ａ・７６ａ・６５ａは、各固定刃１８・２０・２２・２４の上突端より僅かに突出させてあり、各肌押圧体５９ａ・６５ａ・７６ａ・６５ａは、かみそりヘッド６の前面側へ向かって末広がり状に配置してある。
Outer blade supports that support the fixed blades 18, 20, 22, and 24 of the first to fourth cutting blades 11 to 13, specifically, the fixed blade support 59, the upper ends of the left and right ends of the outer blade frame 73, As shown in FIGS. 4 and 14, skin pressing bodies 59a, 65a, 76a, and 65a are provided at the upper ends of the left and right blade receiving pieces 86, respectively. These skin pressing bodies 59a, 65a, 76a, 65a are slightly protruded from the upper projecting ends of the fixed blades 18, 20, 22, 24, and each skin pressing body 59a, 65a, 76a, 65a is a razor head. 6 is arranged in a divergent shape toward the front surface side.
詳しくは、各肌押圧体５９ａ・６５ａ・７６ａ・６５ａは全体としてハ字状に配列してある。また、第１切断刃１１と第２切断刃１２における左右の肌押圧体５９ａ・６５ａは、それぞれかみそりヘッド６の前面側へ向かって末広がり状（ハ字状）に配置され、第３切断刃１３と第４切断刃１４における左右の肌押圧体７６ａ・６５ａは、それぞれ左右平行に配置してある。このように、各肌押圧体５９ａ・６５ａ・７６ａ・６５ａを全体としてハ字状に配列し、さらに第１切断刃１１と第２切断刃１２の左右の肌押圧体５９ａ・６５ａを、それぞれ末広がり状に配置することにより、図１５に示す状態で髭剃りを行なう場合に、肌面を左右方向へ徐々に押し拡げながら髭を切断して、深剃りすることができる。
Specifically, the skin pressing bodies 59a, 65a, 76a, and 65a are arranged in a C shape as a whole. Further, the left and right skin pressing bodies 59a and 65a in the first cutting blade 11 and the second cutting blade 12 are respectively arranged in a divergent shape (C-shape) toward the front side of the razor head 6, and the third cutting blade 13 The left and right skin pressing bodies 76a and 65a of the fourth cutting blade 14 are arranged in parallel in the left-right direction. In this way, the skin pressing bodies 59a, 65a, 76a, and 65a are arranged in a C shape as a whole, and the left and right skin pressing bodies 59a and 65a of the first cutting blade 11 and the second cutting blade 12 are respectively spread apart. By arranging in a shape, when shaving in the state shown in FIG. 15, it is possible to cut and shave the heel while gradually expanding the skin surface in the left-right direction.
第１切断刃１１から第４切断刃１４は、それぞれ単独で上下フロート自在に支持されている。詳しくは、第１切断刃１１と第３切断刃１３は、外刃ホルダー１５でそれぞれ上下フロート自在に支持されており、第２切断刃１２と第４切断刃１４は、振動子２８・２９の駆動軸３０・３１でそれぞれ上下フロート自在に支持されている。加えて、第３切断刃１３は、第２切断刃１２および第４切断刃１４のフロート動作に連動して上下フロートできるように構成してある。
The 1st cutting blade 11 to the 4th cutting blade 14 are each supported by the up-and-down float freely independently. More specifically, the first cutting blade 11 and the third cutting blade 13 are supported by the outer blade holder 15 so as to be floatable up and down, and the second cutting blade 12 and the fourth cutting blade 14 are arranged on the vibrators 28 and 29. It is supported by the drive shafts 30 and 31 so as to freely float up and down. In addition, the third cutting blade 13 is configured to float up and down in conjunction with the float operation of the second cutting blade 12 and the fourth cutting blade 14.
詳しくは、図１４に示すように第３切断刃１３を構成する刃受ピース８６の前後面の左右両側に連動片１０２を突設し、刃受ピース８６の前面あるいは後面と対向する第２・第４切断刃１２・１４の外刃フレーム７３に、連動片１０２の上面に接当する鉤状の連動爪１０３を設けている。第２・第４切断刃１２・１４が外刃フレーム１５の上方に突出した定常状態において、連動爪１０３は連動片１０２に接当しており、したがって、第２・第４切断刃１２・１４のいずれか一方が左右傾動し、あるいは全体が下方へ僅かでも沈み込むと、第３切断刃１３は連動して左右傾動し、あるいは下方へ沈み込むことになる。但し、第３切断刃１３が単独で沈み込んだとしても、第２切断刃１２および第４切断刃１４が沈み込み変位することはない。
Specifically, as shown in FIG. 14, interlocking pieces 102 project from left and right sides of the front and rear surfaces of the blade receiving piece 86 constituting the third cutting blade 13, and face the front or rear surface of the blade receiving piece 86. The outer cutter frame 73 of the fourth cutting blades 12 and 14 is provided with a hook-like interlocking claw 103 that contacts the upper surface of the interlocking piece 102. In the steady state in which the second and fourth cutting blades 12 and 14 protrude above the outer blade frame 15, the interlocking claw 103 is in contact with the interlocking piece 102. Therefore, the second and fourth cutting blades 12 and 14 are in contact with each other. If either one of them tilts left or right, or if the whole sinks even slightly, the third cutting blade 13 tilts left and right in conjunction with it or sinks downward. However, even if the third cutting blade 13 sinks alone, the second cutting blade 12 and the fourth cutting blade 14 do not sink and are displaced.
上記の実施例以外に、本発明に係る第１切断刃１１は図１６に示す種々の形態で電気かみそりに適用でき、本発明はこれらの形態の全てを含むこととする。図１６（ａ）では、かみそりヘッド６の上部に仕上げ剃り用の第２切断刃１２を１個だけ配置し、その後ろ側に第１切断刃１１を隣接配置した。
In addition to the above embodiments, the first cutting blade 11 according to the present invention can be applied to an electric shaver in various forms shown in FIG. 16, and the present invention includes all of these forms. In FIG. 16A, only one second cutting blade 12 for finishing shaving is disposed on the upper part of the razor head 6, and the first cutting blade 11 is disposed adjacent to the rear side thereof.
また、図１６（ｂ）に示すように、きわ剃り刃ユニット５を備えている電気かみそりにおいて、きわぞり刃を第１切断刃１１で構成した。この場合には、かみそりヘッド６に仕上げ剃り用の２個の第２切断刃１２と第３切断刃１３が設けてある。きわ剃り刃ユニット５は、本体ケース１で上下スライド可能に支持されており、第１切断刃１１の上端がかみそりヘッド６の下側の待機位置にある状態と、第１切断刃１１の上端が第２・第４の切断刃１２・１４の上端とほぼ同じ高さにあるコンビ剃り位置と、コンビ剃り位置からさらに上側へ突出する単独使用位置とに切り換えることができる。
In addition, as shown in FIG. 16 (b), in the electric razor provided with the shave blade unit 5, the shave blade is constituted by the first cutting blade 11. In this case, the razor head 6 is provided with two second cutting blades 12 and a third cutting blade 13 for finishing shaving. The sharp shaving blade unit 5 is supported by the main body case 1 so as to be slidable up and down. The upper end of the first cutting blade 11 is in a standby position below the razor head 6, and the upper end of the first cutting blade 11 is It is possible to switch between a combination shaving position that is substantially the same height as the upper ends of the second and fourth cutting blades 12 and 14 and a single use position that protrudes further upward from the combination shaving position.
図１６（ｃ）では、かみそりヘッド６の上部に仕上げ剃り用の第２・第４切断刃１２・１４を設け、これら両者１２・１４の間にセンター刃として機能する第１切断刃１１を配置した。
In FIG. 16 (c), the second and fourth cutting blades 12 and 14 for finishing shaving are provided on the upper portion of the razor head 6, and the first cutting blade 11 that functions as a center blade is disposed between the both 12 and 14. did.
図１６（ｄ）では、図１６（ａ）と同様にかみそりヘッド６の上部に仕上げ剃り用の第２切断刃１２と第１切断刃１１を隣接配置するが、第１切断刃１１を第２切断刃１２より前側に、しかも第１切刃部３８がかみそりヘッド６の前面側へ突出する状態で第１切断刃１１を配置した。つまり、図１６（ａ）の電気かみそりの前後の概念を反転すると、図１６（ｄ）の電気かみそりが得られるわけであり、本発明はこのように前後が単純に反転された概念の電気かみそりを含むこととする。
In FIG. 16D, the second cutting blade 12 for finishing shaving and the first cutting blade 11 are arranged adjacent to the upper part of the razor head 6 as in FIG. 16A, but the first cutting blade 11 is the second one. The first cutting blade 11 is disposed in front of the cutting blade 12 and the first cutting blade portion 38 protrudes toward the front side of the razor head 6. That is, when the concept before and after the electric razor in FIG. 16 (a) is inverted, the electric razor in FIG. 16 (d) is obtained, and the present invention has the concept of an electric razor whose concept is simply inverted in this way. Is included.
図１６（ｅ）では、かみそりヘッド６に２個の仕上げ剃り用の第２切断刃１２を配置し、本体ケース１の下部に、粗剃り用の２個の第１切断刃１１を背中合わせ状に配置した。不使用時の各切断刃１１・１２は、それぞれ保護キャップ１２２・１２３で覆われている。
In FIG. 16 (e), two second cutting blades 12 for finishing shaving are arranged on the razor head 6, and the two first cutting blades 11 for rough shaving are placed back-to-back at the bottom of the main body case 1. Arranged. The cutting blades 11 and 12 when not in use are covered with protective caps 122 and 123, respectively.
上記の実施例では、第１切断刃１１を鋭角に形成したが、縦壁３６・４８と上壁３７・４９の折曲げ角度は９０度であってもよい。第１切断刃１１の固定刃１８の上壁３７は平坦壁である必要はなく、上突湾曲面状に形成することができる。溝１０５はハーフエッチング加工で形成する必要はなく、プレス加工や切削加工で形成することができる。第３切断刃１３の外刃１３は、左右に連続する前後壁７９・８０を備えている必要はなく、例えば、外刃１３の左右方向一定間隔おきに上壁７８に連続して下方に伸びる脚片を備えた外刃構造であってもよい。
In the above embodiment, the first cutting blade 11 is formed at an acute angle, but the bending angle between the vertical walls 36 and 48 and the upper walls 37 and 49 may be 90 degrees. The upper wall 37 of the fixed blade 18 of the first cutting blade 11 does not need to be a flat wall, and can be formed in an upwardly curved surface shape. The groove 105 need not be formed by half-etching, but can be formed by pressing or cutting. The outer blade 13 of the third cutting blade 13 does not need to include the front and rear walls 79 and 80 that are continuous to the left and right. For example, the outer blade 13 extends downward continuously from the upper wall 78 at regular intervals in the left and right direction. An outer blade structure provided with leg pieces may be used.
上記の実施例では、第１切刃部３８の前後端縁のそれぞれを、平面視において外突湾曲線状に形成したが、第１切刃部３８の前端縁（補強リブ４０の後端縁）は、平面視において直線状に形成することができる。その場合には、左右中央部付近における切刃の前後長さを充分に確保して、髭の切断機会を向上しながら、左右両端付近の切刃の前後長さを短くして切刃の構造強度を向上できる。第２・第４の両切断刃１２・１４は、それぞれ往復動式の切断刃である必要はなく、シリンダー構造の内刃が横軸回りに回転するロータリー式の切断刃であってもよい。
In the above embodiment, each of the front and rear end edges of the first cutting edge portion 38 is formed in an outwardly curved line shape in plan view, but the front end edge of the first cutting edge portion 38 (the rear end edge of the reinforcing rib 40). ) Can be formed linearly in plan view. In that case, the front and rear length of the cutting edge near the center of the left and right is sufficiently secured to improve the cutting opportunity of the scissors, while the front and rear length of the cutting edge near the left and right ends is shortened. Strength can be improved. The second and fourth cutting blades 12 and 14 do not need to be reciprocating cutting blades, respectively, and may be rotary cutting blades in which an inner blade of a cylinder structure rotates about a horizontal axis.
