JP4422374B2

JP4422374B2 - Safety razor

Info

Publication number: JP4422374B2
Application number: JP2001354113A
Authority: JP
Inventors: 浩之中須賀
Original assignee: Kaijirushi Hamono Center KK
Current assignee: Kaijirushi Hamono Center KK
Priority date: 2001-11-20
Filing date: 2001-11-20
Publication date: 2010-02-24
Anticipated expiration: 2021-11-20
Also published as: JP2003154178A

Description

【０００１】
【発明の属する技術分野】
本発明は、一般大衆が使用する安全カミソリに関し、特に刃先を部分的に覆うガ−ドプレ−トに関する。
【０００２】
【従来の技術】
ガ−ドプレ−トを装着した安全カミソリは従来から存在し、ガ−ドプレ−トの前部をガ−ドバ−に係合し後部を天板のかしめ突起に係合したものも存在している。
【０００３】
【発明が解決しようとする課題】
上述した従来技術としては、例えば特開平１０−１７４７９０公報に記載された安全カミソリが存在する。この安全カミソリは図６及び図１３に示されたようにガ−ドプレ−トの前部と後部に、カミソリヘッドと係合するための係合孔が設けられている。
【０００４】
係合孔を有するガ−ドプレ−トは前記公報に記載されているが、ガ−ドプレ−トの前部と後部の係合孔は横方向にずれていて対向していない。したがって、細いガ−ド部に張力が加わったときに、ガ−ドプレ−トはステンレス等の材料で非常に薄く形成されているから、ガ−ドプレ−トの前部又は後部がガ−ド部に引っ張られて容易に変形してしまうのである。
【０００５】
このように、ガ−ド部に張力が加わったときにガ−ドプレ−トの前部又は後部が容易に変形してしまうようでは円滑なヒゲ剃りを行なうことができない。そこで、本発明は特定のガ−ド部に張力が加わってもそのガ−ド部によるガ−ドプレ−トの変形を効果的に防止できる安全カミソリを提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の構成の請求項１は、刃先を覆うガ−ドプレ−トがカミソリヘッドの一部として装着され、ガ−ドプレ−トに刃先露出孔を設けることによって形成されたガ−ド部が刃先を横切るように覆っており、ガ−ドプレ−トの前部及び後部がそれぞれカミソリヘッドに係合してガードプレートがカミソリヘッドに支持されている安全カミソリにおいて、ガ−ドプレ−トを支持するための係合孔が刃先露出孔とは別にガード部の前部と後部にそれぞれ複数設けられ、刃先の前方に延在するガードバーの内面に形成された係合突起に、ガードプレートの前部に設けられた係合孔が係合し、前記係合突起及び係合孔の中心は、ガード部の端部の延長線が通っており、且つ、前記係合突起からガ−ドプレ−トの前部が外れないように前記係合突起の端部はつぶされている構成である。
【０００７】
【発明の効果】
本発明は以上のような構成であって、ガ−ドプレ−トを支持するために、刃先の前方に延在するガードバーの内面に形成された係合突起に、ガードプレートの前部に設けられた係合孔が係合し、前記係合突起及び係合孔の中心は、ガード部の端部の延長線が通っている。したがって、使用中にそのようなガ−ド部に引っ張り力がはたらいたとき、あるいは製造時に初めからそのようなガ−ド部に引っ張り力が加わるように組み立てたときに、そのようなガ−ド部を原因とするガ−ドプレ−トの変形を効果的に防止できる。
【０００８】
【発明の実施の形態】
次に、本発明の実施の形態を図面に従って説明する。図面は３枚の刃を有する替刃カ−トリッジに関する。ガ−ドプレ−ト１は薄い板状のステンレスで形成されているが材料がステンレスに限定されないことは勿論である。ガ−ドプレ−ト１の前部２の近くに７つの刃先露出孔３が横方向に並べて設けられ、この構成によって８つの線状ガ−ド部４が形成されている。刃先露出孔３の数がこれに限定されないことは勿論であり、ガ−ド部４は線状でなくやや幅のあるものにしてもよい。
【０００９】
ガ−ドプレ−トの前部２には４つの係合孔５が設けられている。係合孔５はそれぞれがガ−ド部の付け根６の延長線上にあって、やや横長に形成されている。係合孔５が４つに限定されないことは勿論である。
【００１０】
ガ−ドプレ−トの後部７には２つの係合孔８が設けられている。係合孔８はそれぞれがガ−ド部の付け根９の延長線上にあって、やや縦長に形成されている。係合孔のすべてがガ−ド部の付け根９の延長線上にある場合に限定されない。また、係合孔８は２つに限定されない。また、２つのガ−ド部の前後の延長線上に係合孔５及び係合孔８が存在する構成であるが、２つのガ−ド部に限定されることはなく１つでもよく３以上でもよい。なお、係合孔８，８よりも端部寄りに丸孔１０が設けられているが、これは本発明に関係するものでなく、製造工程においてガ−ドプレ−トを位置決めするときに用いられる。
【００１１】
替刃カ−トリッジ１１は、天板１２と刃台１３の間に３枚の刃を挾着した構成である。３枚の刃は、下刃１７よりも中間刃１８が後方にずらされ、中間刃１８よりも上刃１９が後方にずらされて装着される。刃台１３に設けた階段状の４つの前支持部１４と４つの後支持部１５、及び天板１２の裏面に階段状に形成された４つのかしめ突起１６と両側に設けられた２つの前支持部２４が刃のずれた部分を支持することによって刃は挾着される。この階段状の支持構成によってスペ−サ−がなくても各刃の間にヒゲカス排出用の隙間を設けることができる。
【００１２】
図４は天板１２の底面図であって、前述した階段状の４つのかしめ突起１６と２つの前支持部２４が形成されている。４つのかしめ突起１６の中寄りの２つは刃の挿通孔に挿通されるが、側部寄りの２つのかしめ突起１６は刃の側部に設けられた切欠に挿通される。刃先の前方に延在するガ−ドバ−２０は天板１２と一体に形成されており、ガ−ドバ−２０の内面には４つの横長の係合突起２５が一体に形成されている。なお、符号２３は天板１２の上面に固着されたスム−サ−である。
【００１３】
図５は刃台１３の上面図であって、前述した階段状の４つの前支持部１４と４つの後支持部１５が設けられている。符号２６は天板のかしめ突起１６が挿通するかしめ孔である。刃台１３の前部にはガ−ドバ−連結部２７が一体に設けられ、天板のガ−ドバ−２０の底面に一体に設けられた２つの連結突起２８をガ−ドバ−連結部２７の２つの孔２９に嵌合して、ガ−ドバ−２０とガ−ドバ−連結部２７が連結される。符号２１はガ−ドバ−連結部２７に固着されたエラストマ−であり、符号２２はガ−ドバ−２０に取付けられたスム−サ−である。
【００１４】
ガ−ドプレ−トの後部７は、上刃１９と天板１２との間に挾着され、かしめ突起１６はガ−ドプレ−トの係合孔８に挿通されている。ガ−ドプレ−ト１が３つの刃先を覆うようにその前部２はガ−ドバ−２０の内面まで到達し、係合孔５はガ−ドバ−の係合突起２５に係合している。係合突起２５からガ−ドプレ−トの前部２が外れないように、係合突起２５の端部はつぶされている。各ガ−ド部４は縦方向に平行に且つ直線状に延在しやや緊張状態に置かれている。各ガ−ド部４は直線状でなくてもよく、緊張状態でなくてもよいことは勿論である。
【００１５】
図６及び図７は刃であって、図６の刃は中間刃１８及び上刃１９として使用され、図７の刃は下刃１７として使用される。各刃の両側には切欠３０，３１が設けられているが、前述したように天板の側部寄りの２つのかしめ突起１６をこれらの切欠３０，３１に挿通して各刃を支持するためのものである。また、天板の中央寄りの２つのかしめ突起１６を中間刃及び上刃の挿通孔３３と下刃の挿通孔３２に挿通する。中間刃１８及び上刃１９にかしめ突起を挿通するときは内寄りの一対の挿通孔３３，３３のみが使用され他の挿通孔３４は使用されない。挿通孔３４はヒゲカスの排出を促進させる作用をなす。しかし、例えば下刃１７を上刃及び中間刃１８，１９と同形状とし、かしめ突起１６をやや外寄りに形成して現在使用されている挿通孔３２，３３よりも外寄りにかしめ突起１６を通すときは、外寄りの挿通孔３４がかしめ突起挿通用として使用される。
【図面の簡単な説明】
【図１】ガ−ドプレ−トの正面図
【図２】替刃カ−トリッジの断面図
【図３】替刃カ−トリッジの平面図
【図４】天板の底面図
【図５】刃台の平面図
【図６】刃の正面図
【図７】刃の正面図
【符号の説明】
１ガ−ドプレ−ト
２ガ−ドプレ−トの前部
３刃先露出孔
４ガ−ド部
５係合孔
６ガ−ド部の付け根
７ガ−ドプレ−トの後部
８係合孔
９ガ−ド部の付け根
１０丸孔
１１替刃カ−トリッジ
１２天板
１３刃台
１４前支持部
１５後支持部
１６かしめ突起
１７下刃
１８中間刃
１９上刃
２０ガ−ドバ−
２１エラストマ−
２２スム−サ−
２３スム−サ−
２４前支持部
２５係合突起
２６かしめ孔
２７ガ−ドバ−連結部
２８連結突起
２９孔
３０切欠
３１切欠
３２挿通孔
３３挿通孔
３４挿通孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety razor used by the general public, and more particularly to a guard plate that partially covers the cutting edge.
[0002]
[Prior art]
Safety razors equipped with a guard plate have existed in the past, and there are those in which the front portion of the guard plate is engaged with the guard bar and the rear portion is engaged with the caulking projection of the top plate. .
[0003]
[Problems to be solved by the invention]
As the above-described prior art, for example, there is a safety razor described in JP-A-10-174790. As shown in FIGS. 6 and 13, the safety razor is provided with engagement holes for engaging with the razor head at the front and rear portions of the guard plate.
[0004]
Although the guard plate having the engagement holes is described in the above publication, the front and rear engagement holes of the guard plate are shifted in the lateral direction and are not opposed to each other. Therefore, when tension is applied to the thin guard part, the guard plate is made of a material such as stainless steel so that the front part or the rear part of the guard plate is the guard part. It is easily deformed by being pulled by.
[0005]
Thus, if the front part or the rear part of the guard plate is easily deformed when tension is applied to the guard part, smooth shaving cannot be performed. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a safety razor that can effectively prevent deformation of a guard plate by a guard portion even when tension is applied to a specific guard portion.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, a guard plate that covers a blade edge is mounted as a part of a razor head, and a guard portion formed by providing a blade edge exposure hole in the guard plate has a blade edge. To support the guard plate in a safety razor in which the front and rear portions of the guard plate are respectively engaged with the razor head and the guard plate is supported by the razor head. In addition to the blade edge exposure hole, a plurality of engagement holes are provided at the front and rear portions of the guard portion, and provided at the front portion of the guard plate on the engagement protrusion formed on the inner surface of the guard bar extending forward of the blade edge. The engaging projection and the center of the engaging hole pass through an extension line of the end of the guard portion , and the front portion of the guard plate extends from the engaging projection. The end of the engaging protrusion so that it does not come off Is a configuration that has been crushed.
[0007]
【The invention's effect】
The present invention is configured as described above, and is provided at the front portion of the guard plate on the engagement protrusion formed on the inner surface of the guard bar extending forward of the blade edge in order to support the guard plate. The engagement hole engages, and an extension line of the end of the guard portion passes through the center of the engagement protrusion and the engagement hole . Therefore, when a tensile force is applied to such a guard part during use, or when such a guard part is assembled from the beginning at the time of manufacture, such a guard part is applied. The deformation of the guard plate due to the portion can be effectively prevented.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The drawing relates to a replaceable blade cartridge having three blades. The guard plate 1 is made of thin plate-like stainless steel, but the material is of course not limited to stainless steel. Seven cutting edge exposure holes 3 are provided in the horizontal direction near the front portion 2 of the guard plate 1, and eight linear guard portions 4 are formed by this configuration. Needless to say, the number of the blade edge exposure holes 3 is not limited to this, and the guard portion 4 may not be linear but may be slightly wide.
[0009]
Four engaging holes 5 are provided in the front portion 2 of the guard plate. Each of the engagement holes 5 is on an extension line of the base 6 of the guard part and is formed in a slightly lateral shape. Of course, the number of the engagement holes 5 is not limited to four.
[0010]
Two engagement holes 8 are provided in the rear portion 7 of the guard plate. Each of the engagement holes 8 is on an extension line of the base 9 of the guard portion, and is formed in a slightly elongated shape. The present invention is not limited to the case where all of the engagement holes are on the extension line of the base 9 of the guard portion . Further, the number of the engagement holes 8 is not limited to two. In addition, the engagement hole 5 and the engagement hole 8 exist on the extension lines before and after the two guard portions, but the number is not limited to the two guard portions, and one may be three or more. But you can. Although the round hole 10 is provided closer to the end than the engagement holes 8 and 8, this is not related to the present invention and is used when positioning the guard plate in the manufacturing process. .
[0011]
The replaceable blade cartridge 11 has a configuration in which three blades are attached between the top plate 12 and the blade base 13. The three blades are mounted such that the intermediate blade 18 is shifted backward relative to the lower blade 17 and the upper blade 19 is shifted backward relative to the intermediate blade 18. Four step-shaped front support portions 14 and four rear support portions 15 provided on the blade base 13, four caulking projections 16 formed in a step shape on the back surface of the top plate 12, and two front portions provided on both sides The blade is attached by the support portion 24 supporting the portion where the blade is displaced. With this step-like support structure, a space for discharging the mustaches can be provided between the blades without a spacer.
[0012]
FIG. 4 is a bottom view of the top plate 12 in which the above-mentioned four stepped caulking projections 16 and two front support portions 24 are formed. The two caulking projections 16 near the center of the four caulking projections 16 are inserted into the insertion holes of the blade, but the two caulking projections 16 near the side are inserted into notches provided on the side portions of the blade. The guard bar 20 extending in front of the blade edge is formed integrally with the top plate 12, and four horizontally long engaging projections 25 are formed integrally on the inner surface of the guard bar 20. Reference numeral 23 denotes a smoother fixed to the upper surface of the top plate 12.
[0013]
FIG. 5 is a top view of the blade base 13 and is provided with the four step-shaped front support portions 14 and the four rear support portions 15 described above. Reference numeral 26 denotes a caulking hole through which the caulking projection 16 of the top plate is inserted. A guard bar connecting portion 27 is integrally provided at the front portion of the blade base 13, and two connecting protrusions 28 integrally provided on the bottom surface of the guard bar 20 of the top plate are connected to the guard bar connecting portion 27. The guard bar 20 and the guard bar connecting portion 27 are connected to each other. Reference numeral 21 denotes an elastomer fixed to the guard bar connecting portion 27, and reference numeral 22 denotes a smoother attached to the guard bar 20.
[0014]
The rear portion 7 of the guard plate is attached between the upper blade 19 and the top plate 12, and the caulking projection 16 is inserted into the engagement hole 8 of the guard plate. The front part 2 reaches the inner surface of the guard bar 20 so that the guard plate 1 covers the three cutting edges, and the engaging hole 5 is engaged with the engaging protrusion 25 of the guard bar. . The end of the engagement protrusion 25 is crushed so that the front portion 2 of the guard plate does not come off from the engagement protrusion 25. Each of the guard portions 4 extends in a straight line parallel to the vertical direction and is placed in a slightly tensioned state. Of course, each guard part 4 does not have to be linear, and need not be in a tension state.
[0015]
6 and 7 are blades, and the blade of FIG. 6 is used as the intermediate blade 18 and the upper blade 19, and the blade of FIG. 7 is used as the lower blade 17. Although notches 30 and 31 are provided on both sides of each blade, as described above, the two caulking protrusions 16 near the side of the top plate are inserted into these notches 30 and 31 to support each blade. belongs to. Further, the two caulking projections 16 near the center of the top plate are inserted into the insertion holes 33 of the intermediate blade and the upper blade and the insertion holes 32 of the lower blade. When the caulking projection is inserted through the intermediate blade 18 and the upper blade 19, only the pair of inward insertion holes 33, 33 are used, and the other insertion holes 34 are not used. The insertion hole 34 serves to promote the discharge of the mustaches. However, for example, the lower blade 17 has the same shape as the upper blade and the intermediate blades 18 and 19, and the caulking protrusion 16 is formed slightly outward so that the caulking protrusion 16 is positioned outward from the insertion holes 32 and 33 currently used. When passing, the outer insertion hole 34 is used for caulking projection insertion.
[Brief description of the drawings]
[Fig. 1] Front view of guard plate [Fig. 2] Cross-sectional view of replaceable blade cartridge [Fig. 3] Plan view of replaceable blade cartridge [Fig. 4] Bottom view of top plate [Fig. 5] Blade Plan view of the stand [Fig. 6] Front view of the blade [Fig. 7] Front view of the blade [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guard plate 2 Front part of guard plate 3 Cutting edge exposure hole 4 Guard part 5 Engagement hole 6 Base of guard part 7 Rear part of guard plate 8 Engagement hole 9 Gard Base part 10 Round hole 11 Replacement blade cartridge 12 Top plate 13 Blade base 14 Front support part 15 Rear support part 16 Caulking projection 17 Lower blade 18 Intermediate blade 19 Upper blade 20 Guard bar
21 Elastomer
22 Smoother
23 Smoother
24 Front support portion 25 Engagement projection 26 Caulking hole 27 Guard bar connection portion 28 Connection projection 29 Hole 30 Notch 31 Notch 32 Insertion hole 33 Insertion hole 34 Insertion hole

Claims

A guard plate covering the blade edge is mounted as a part of the razor head, and a guard portion formed by providing a blade edge exposure hole in the guard plate is covered so as to cross the blade edge. In the safety razor in which the front and rear portions of the plate are respectively engaged with the razor head and the guard plate is supported by the razor head, the engagement hole for supporting the guard plate is the blade edge exposure hole. Separately, multiple engagement holes provided in the front part of the guard plate are engaged with engagement protrusions formed on the inner surface of the guard bar provided in front and rear parts of the guard part and extending forward of the cutting edge. The center of the engaging projection and the engaging hole is extended by the end line of the guard portion , and the front of the guard plate is not detached from the engaging projection. Features that the edge is crushed Safety razor to.