JPH0696061B2 - Sewing machine bite - Google Patents
Sewing machine biteInfo
- Publication number
- JPH0696061B2 JPH0696061B2 JP18412792A JP18412792A JPH0696061B2 JP H0696061 B2 JPH0696061 B2 JP H0696061B2 JP 18412792 A JP18412792 A JP 18412792A JP 18412792 A JP18412792 A JP 18412792A JP H0696061 B2 JPH0696061 B2 JP H0696061B2
- Authority
- JP
- Japan
- Prior art keywords
- hook
- rail
- synthetic resin
- sewing machine
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009958 sewing Methods 0.000 title claims description 20
- 229920003002 synthetic resin Polymers 0.000 claims description 26
- 239000000057 synthetic resin Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 229920001903 high density polyethylene Polymers 0.000 claims description 15
- 239000004700 high-density polyethylene Substances 0.000 claims description 15
- 239000011247 coating layer Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000000314 lubricant Substances 0.000 claims description 7
- 239000004519 grease Substances 0.000 description 13
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、本縫ミシンなどのミシ
ンのかまに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook of a sewing machine such as a lockstitch sewing machine.
【０００２】[0002]
【従来の技術】本縫ミシンなどに備えられる部品である
たとえば外かまは、鋼鉄あるいはステンレス鋼製であっ
て、内周面には軌溝が形成され、外周面には剣先が形成
されている。このような外かまの前記軌溝には、内かま
の外周面に形成される軌条が嵌まり込み、この内かまは
ミシンの機体に固定される内かま回り止め部材によって
外かま回転方向下流側への回転が阻止された状態で、外
かまだけが高速で回転駆動される。特に工業用ミシンの
外かまは６０００〜１００００ｒｐｍ程度の高速で回転
駆動される。したがって軌条と軌溝との摺接によって大
きな摩擦力が発生し、外かまの回転に大きなトルクが必
要になる。軌条と軌溝との摩擦が大きいと、内かまの回
転を阻止しているかま止め部材に、そのかま止め部材が
嵌まり込む内かまのかま止め凹所の内面が大きな力で当
接するため、上糸の糸抜けを円滑に行うことができず、
これによって上糸の張力が不所望に変化してしまい、縫
いの品質が低下するとともに軌条および軌溝が摩擦し
て、耐久性が低下してしまうという問題がある。この問
題を解決するために、内かまの軌条と外かまの軌溝との
間に潤滑油を供給する構成が周知であるけれども、その
ような構成が複雑であり、また軌溝と軌条との間に供給
された潤滑油によって上糸、下糸および布などが汚損す
るおそれがある。2. Description of the Related Art An outer hook, which is a component provided in a lockstitch sewing machine or the like, is made of steel or stainless steel. . A rail formed on the outer peripheral surface of the inner hook is fitted in the rail groove of such an outer hook, and the inner hook is fixed to the machine body of the sewing machine by an inner hook stopper member which is located on the downstream side in the outer hook rotating direction. Only the outer hook is rotationally driven at a high speed while the rotation to the is blocked. Particularly, the outer hook of an industrial sewing machine is rotationally driven at a high speed of about 6000 to 10000 rpm. Therefore, a large frictional force is generated due to the sliding contact between the rail and the rail groove, and a large torque is required to rotate the outer hook. If the friction between the rail and the rail groove is large, the inner surface of the hook-stop recess of the inner hook that is fitted into the hook-stop member that blocks the rotation of the inner hook comes into contact with a large force, The upper thread cannot be pulled out smoothly,
As a result, the tension of the needle thread changes undesirably, which lowers the quality of sewing and causes friction between rails and rail grooves, resulting in lower durability. In order to solve this problem, a configuration for supplying lubricating oil between the inner hook rail and the outer hook rail groove is known, but such a construction is complicated, and the rail groove and the rail There is a possibility that the upper thread, the lower thread and the cloth may be contaminated by the lubricating oil supplied between them.
【０００３】[0003]
【発明が解決しようとする課題】したがって本発明の目
的は、内かまの軌条と外かまの軌溝との間の摩擦を少な
くして耐摩耗性を向上しかつ上糸の張力の変化を防止
し、縫い品質の向上を図ることができるようにしたミシ
ンのかまを提供することである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to reduce friction between the inner hook rail and the outer hook rail groove to improve wear resistance and prevent changes in needle thread tension. The purpose of the present invention is to provide a hook for a sewing machine that can improve the sewing quality.
【０００４】[0004]
【課題を解決するための手段】本発明は、内かまの軌条
の外表面の少なくとも一部が潤滑剤を含む高密度ポリエ
チレンから成る被覆層で形成されていることを特徴とす
るミシンのかまである。The present invention also includes a sewing machine characterized in that at least a part of the outer surface of the inner hook rail is formed of a coating layer made of high-density polyethylene containing a lubricant. .
【０００５】また本発明は、外かまの軌溝の内表面の少
なくとも一部が潤滑剤を含む高密度ポリエチレンから成
る被覆層で形成されていることを特徴とするミシンのか
まである。The present invention also includes a sewing machine characterized in that at least a part of the inner surface of the outer race's rail groove is formed of a coating layer made of high-density polyethylene containing a lubricant.
【０００６】さらに本発明は、前記内かまは、金属、合
成樹脂、または金属と合成樹脂との複合体から成る内か
ま本体を有し、この本体の外周面に前記軌条が形成され
ることを特徴とする。Further, according to the present invention, the inner hook has an inner hook main body made of metal, synthetic resin, or a composite of metal and synthetic resin, and the rail is formed on an outer peripheral surface of the main body. Characterize.
【０００７】さらに本発明は、前記外かまは、金属、合
成樹脂、または金属と合成樹脂との複合体から成る外か
ま本体を有し、この本体の内周面に前記軌溝が形成され
ることを特徴とする。Further, in the present invention, the outer hook has an outer hook main body made of metal, synthetic resin, or a composite of metal and synthetic resin, and the rail groove is formed on an inner peripheral surface of the main body. It is characterized by
【０００８】[0008]
【作用】本発明に従えば、内かまの軌条の外表面の少な
くとも一部、または外かまの軌溝の内表面の少なくとも
一部が、グリースなどの潤滑剤を含む高密度ポリエチレ
ンから成る被覆層で形成されるようにしたので、耐摩耗
性が向上され、これによって外かまの回転を円滑にし、
内かまを安定に阻止することができるようになり、これ
によって内かまのかま止め凹所と本縫いミシン本体に取
付けられている内かま回り止め部材との間の上糸の糸抜
けを良好にし、これによって糸締まりを良好にし、また
糸縫い品質の向上を図ることができ、また潤滑油の軌条
と軌溝への供給をする必要がなくなり、過剰な潤滑油に
よる糸および布などの汚損を防ぐことができる。According to the present invention, at least a part of the outer surface of the inner hook rail or at least a part of the inner surface of the outer hook rail groove is made of a high density polyethylene containing a lubricant such as grease. Since it is formed with, wear resistance is improved, which makes the rotation of the outer hook smooth,
This enables the inner hook to be stably blocked, which makes it easier to remove the upper thread between the hook stopping recess of the inner hook and the inner hook stopping member attached to the lockstitch sewing machine main body. As a result, thread tightening can be improved and thread sewing quality can be improved, and it is no longer necessary to supply lubricating oil to the rails and grooves, so that excess lubricating oil can prevent the threads and cloth from being contaminated. Can be prevented.
【０００９】また前記内かま本体は、金属、合成樹脂ま
たは金属と合成樹脂との複合体から形成され、前記内か
まの軌条の外周面の少なくとも一部が、前記被覆層で形
成されている。The inner hook body is made of metal, synthetic resin or a composite of metal and synthetic resin, and at least a part of the outer peripheral surface of the rail of the inner hook is formed of the coating layer.
【００１０】さらに前記外かま本体は、金属、合成樹脂
または金属と合成樹脂との複合体から形成され、前記外
かまの軌溝の内周面の少なくとも一部が、前記被覆層で
形成される。Further, the outer hook body is made of metal, synthetic resin or a composite of metal and synthetic resin, and at least a part of the inner peripheral surface of the rail groove of the outer hook is formed of the coating layer. .
【００１１】[0011]
【実施例】図１は、本発明の一実施例の垂直全回転かま
１の全体の構成を示す斜視図であり、図２はその軸線に
沿う断面図である。垂直全回転かま１は、下軸２に固定
され、矢符Ｙ方向に回転駆動される外かま３と、この外
かま３内に収納される内かま４と、この内かま４に着脱
自在に装着されるボビンケース５とを有する。このボビ
ンケース５には、ボビン１６が収納されており、このボ
ビン１６には、下糸が巻回されており、前記内かま４の
スタッド１５に装着される。外かま３のボス１４は水平
軸線１７を有する下軸２に固定されて高速度で回転駆動
される。前記内かま４の開放端部のフランジ６には、か
ま止め部材７の遊端部に形成される突部８が嵌まり込む
かま止め凹所９が形成され、このかま止め凹所９に前記
突部８が嵌まり込んだ状態で、外かま３の回転に伴う内
かま４の回転が阻止される。前記かま止め部材７は、そ
の基端部がミシンの機体などに固定される。1 is a perspective view showing the overall construction of a vertical full rotary hook 1 according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the axis thereof. The vertical full rotation rotary hook 1 is fixed to the lower shaft 2 and is attached to the outer hook 3 which is rotationally driven in the arrow Y direction, the inner hook 4 which is housed in the outer hook 3, and the inner hook 4 which is removable. And a bobbin case 5 to be mounted. A bobbin 16 is accommodated in the bobbin case 5, and a bobbin thread is wound around the bobbin 16 and is attached to the stud 15 of the inner rotary hook 4. The boss 14 of the outer hook 3 is fixed to the lower shaft 2 having a horizontal axis 17 and is rotationally driven at a high speed. The flange 6 at the open end of the inner rotary hook 4 is formed with a rotary hook stopper recess 9 into which the projection 8 formed at the free end portion of the rotary hook stopper member 7 is fitted. The rotation of the inner hook 4 accompanying the rotation of the outer hook 3 is prevented in the state where the protrusion 8 is fitted. The hook-stop member 7 has its base end fixed to the body of the sewing machine or the like.
【００１２】図３は、外かま３の正面図である。外かま
３の周壁１０の内周面には軌溝１１が形成され、この軌
溝１１には図４に示される内かま４の周壁１２の外周面
に形成される軌条１３が摺動自在に嵌まり込む。FIG. 3 is a front view of the outer hook 3. A rail groove 11 is formed on the inner peripheral surface of the peripheral wall 10 of the outer hook 3 and a rail 13 formed on the outer peripheral surface of the peripheral wall 12 of the inner hook 4 shown in FIG. Fit in.
【００１３】図５は、図２の内かま４の軌条１３、およ
び外かま３の軌溝１１付近の拡大断面図である。内かま
４は、内かま本体４ａおよび突部４ｂと被覆層Ｂから成
る軌条１３とから形成され、外かま３は外かま本体３ａ
と被覆層Ａから形成される。外かま本体３ａと内かま本
体４ａとは金属製であり、前記軌条１３の外表面１３ａ
および前記軌溝１１の内表面１１ａには、潤滑剤である
たとえばグリースを含む高密度ポリエチレンから成る被
覆層Ａ，Ｂがたとえば接着剤によって剥離可能に貼着さ
れているので、着脱交換可能である。したがって、前記
軌条１３と前記軌溝１１の摺接によって被覆層Ａ，Ｂが
摩耗しても新しいものと取換えることができる。前記外
かま３および内かま４はたとえばステンレス鋼製であっ
て、既存のかまが用いられてもよい。FIG. 5 is an enlarged sectional view of the rail 13 of the inner rotary hook 4 and the rail groove 11 of the outer rotary hook 3 shown in FIG. The inner rotary hook 4 is formed of the inner rotary hook body 4a, the protrusion 4b, and the rail 13 formed of the coating layer B, and the outer rotary hook 3 is formed of the outer rotary hook body 3a.
And a coating layer A. The outer hook body 3a and the inner hook body 4a are made of metal, and are formed on the outer surface 13a of the rail 13.
Since the coating layers A and B made of high-density polyethylene containing a lubricant such as grease are releasably attached to the inner surface 11a of the rail groove 11 with an adhesive, for example, they can be detached and replaced. . Therefore, even if the coating layers A and B wear due to the sliding contact between the rail 13 and the rail groove 11, they can be replaced with new ones. The outer hook 3 and the inner hook 4 are made of, for example, stainless steel, and existing hooks may be used.
【００１４】前記グリースを含む高密度ポリエチレン
は、ポリエチレンからなる合成樹脂粉末とグリースとを
混合し、１５０℃程度に加熱し、樹脂状に固められて形
成される。前記高密度ポリエチレンは比重０．９４〜
０．９６、結晶化度８５〜９５％であり、硬さはＨｓ＝
７５であり、５７００Ｇを１時間作用させたときの離油
度は５％であり、約３０ｋｇｆ／ｃｍ2 の圧縮強度を有
する。また、前記グリースにおいては、耐熱性の高いリ
チウムセッケングリース、またはメチルシリコーン油に
シリカゲルを混ぜたゼリー状のシリコーングリースであ
ってもよい。前記内かま４の軌条１３、および外かま３
の軌溝１１にこのような樹脂で構成された被覆層Ａ，Ｂ
が形成されることによって、前記軌条１３と軌溝１１と
の摺接による摩耗で、高密度ポリエチレン中のグリース
が出てきて、潤滑される。図６に示されるように、前記
グリースを含む高密度ポリエチレンは、内かま４の突部
４ｂの外表面１３ａだけに貼り付けられてもよく、また
図７に示されるように外かま３の軌溝１１の内表面１１
ａだけにたとえば接着剤によって貼り付けられてもよ
い。The high-density polyethylene containing grease is formed by mixing synthetic resin powder made of polyethylene and grease, heating the mixture to about 150 ° C., and hardening it into a resin. The high density polyethylene has a specific gravity of 0.94 to
0.96, crystallinity 85-95%, hardness Hs =
The oil separation degree is 75%, and the oil separation degree when 5700 G is operated for 1 hour is 5%, and the compressive strength is about 30 kgf / cm 2 . Further, the grease may be lithium soap grease having high heat resistance or jelly-like silicone grease in which silica gel is mixed with methyl silicone oil. The rail 13 of the inner hook 4 and the outer hook 3
Coating grooves A, B made of such a resin on the track groove 11 of
By the formation of the above, the grease in the high density polyethylene comes out and is lubricated by the abrasion due to the sliding contact between the rail 13 and the rail groove 11. As shown in FIG. 6, the high density polyethylene containing grease may be attached only to the outer surface 13a of the protrusion 4b of the inner hook 4, and as shown in FIG. Inner surface 11 of groove 11
It may be attached only to a by an adhesive, for example.
【００１５】図８は、内かま本体３４ａ、外かま本体３
３ａが合成樹脂製である内かま３４、外かま３３であ
る。前記内かま３４の軌条４３がグリースを含む高密度
ポリエチレンでできており、一体的に形成され、および
外かま３３の軌溝４１の内表面４１ａが前記グリースを
含む高密度ポリエチレンから成る被覆層Ｃで一体的に形
成されている。FIG. 8 shows the inner hook body 34a and the outer hook body 3
3a is an inner hook 34 and an outer hook 33 made of synthetic resin. The rail 43 of the inner hook 34 is made of high-density polyethylene containing grease and is integrally formed, and the inner surface 41a of the rail groove 41 of the outer hook 33 is made of high-density polyethylene containing grease C Are formed integrally.
【００１６】また図９は、内かま本体３４ａ、外かま３
３が合成樹脂製であり、軌条４３だけがグリースを含む
高密度ポリエチレンで形成されてもよい。Further, FIG. 9 shows the inner hook body 34a and the outer hook 3
3 may be made of synthetic resin, and only the rail 43 may be made of high density polyethylene containing grease.
【００１７】また図１０は、内かま本体３４ａ、外かま
本体３３ａが合成樹脂製である内かま３４、外かま３３
であり、外かま３３の軌溝４１の内表面４１ａだけがグ
リースを含む高密度ポリエチレンから成る被覆層Ｃであ
ってもよい。Further, FIG. 10 shows an inner hook 34 and an outer hook 33 in which the inner hook main body 34a and the outer hook main body 33a are made of synthetic resin.
Further, only the inner surface 41a of the rail groove 41 of the outer hook 33 may be the coating layer C made of high density polyethylene containing grease.
【００１８】また内かま４と外かま３は、合成樹脂と金
属との複合体から形成される。前記合成樹脂と金属との
複合体は、たとえばエポキシ樹脂にアルミニウムまたは
黄銅などの金属繊維を充填して形成される。前記金属繊
維の太さは０．０１ｍｍ程度のものを使用する。これに
よって引張り強さ、圧縮強さなどの機械的強さが向上さ
れ、金属繊維３５％を加えることにより、引張り強さは
約５倍に増す。The inner hook 4 and the outer hook 3 are formed of a composite of a synthetic resin and a metal. The composite of the synthetic resin and the metal is formed, for example, by filling an epoxy resin with a metal fiber such as aluminum or brass. The metal fiber has a thickness of about 0.01 mm. As a result, mechanical strength such as tensile strength and compressive strength is improved, and the tensile strength is increased about 5 times by adding 35% of the metal fiber.
【００１９】またアルミニウム粉末または鉄粉末をエポ
キシ樹脂に充填したエポキシ注入成形樹脂も好ましく、
これによって機械強さが強くなる。Further, an epoxy injection molding resin obtained by filling an epoxy resin with aluminum powder or iron powder is also preferable,
This increases the mechanical strength.
【００２０】また本実施例の他の実施例として、合成樹
脂と金属との複合体における前記金属に代えて、合成樹
脂に炭素粉末を加えてもよい。As another embodiment of this embodiment, carbon powder may be added to the synthetic resin instead of the metal in the composite of the synthetic resin and the metal.
【００２１】さらに本発明の他の実施例では、前記内か
ま本体が金属製の筒部とこの筒部の軸線方向一端部に連
なる合成樹脂製の底部とから成る複合体によって構成さ
れ、また前記外かま本体が剣先を含む金属製の筒部と、
この筒部の軸線方向一端部に連なる合成樹脂製の底部と
から成る複合体によって構成される。このようにするこ
とによって、かま全体の重量を軽減することができ、特
に外かまの回転トルクが小さくて済む。Further, in another embodiment of the present invention, the inner hook body is constituted by a composite body composed of a metal cylindrical portion and a synthetic resin bottom portion connected to one axial end of the cylindrical portion, and The outer hook body is made of metal including the sword tip,
It is constituted by a composite body composed of a synthetic resin bottom portion continuous with one end portion in the axial direction of the cylindrical portion. By doing so, the weight of the entire rotary hook can be reduced, and particularly, the rotating torque of the outer rotary hook can be small.
【００２２】このような外かま３，３３と内かま４，３
４とを用いて長期間にわたって高速で縫製動作を行って
も、軌溝１１，４１および軌条１３，４３の表面の摩耗
は極めて少なく、耐久性を格段に向上することができ
る。Such outer hooks 3,33 and inner hooks 4,3
Even if the sewing operation is performed at high speed for a long period of time using No. 4 and 4, wear on the surfaces of the rail grooves 11, 41 and rails 13, 43 is extremely small, and the durability can be remarkably improved.
【００２３】さらに本発明の他の実施例として、上述し
たミシンの垂直全回転かま以外の他の部品、たとえば水
平回転かまおよび半回転かまなどに関しても本発明を好
適に実施することができる。Further, as another embodiment of the present invention, the present invention can be suitably implemented with respect to parts other than the above-described vertical full-turn rotary hook of the sewing machine, such as horizontal rotary hook and half-turn rotary hook.
【００２４】[0024]
【発明の効果】以上のように本発明によれば、内かまの
軌条の外表面の少なくとも一部、または外かまの軌溝の
内表面の少なくとも一部が、潤滑剤を含む高密度ポリエ
チレンから形成されるようにしたので、耐摩耗性を格段
に向上することができる。As described above, according to the present invention, at least a part of the outer surface of the inner hook rail or at least a part of the inner surface of the outer hook rail groove is made of high density polyethylene containing a lubricant. Since it is formed, the wear resistance can be remarkably improved.
【００２５】また内かま本体および外かま本体は、金属
製とすることによって既存のかまを用いて安価に本発明
を実施することができる。Further, the inner hook body and the outer hook body are made of metal, so that the present invention can be implemented at a low cost by using an existing hook.
【００２６】さらに内かま本体および外かま本体は、合
成樹脂製とすることによって、一体成形でき、製造が容
易であり、また軽いので、回転トルクが小さくてすみ高
速回転が可能となる。Further, the inner hook main body and the outer hook main body are made of synthetic resin so that they can be integrally molded, are easy to manufacture, and are light in weight, so that the rotation torque is small and high speed rotation is possible.
【００２７】さらに内かま本体および外かま本体は、合
成樹脂と金属との複合体とすることによって強度を高め
ることができる。Furthermore, the strength of the inner hook body and the outer hook body can be increased by using a composite of a synthetic resin and a metal.
【図１】本発明の一実施例の垂直全回転かま１の斜視図
である。FIG. 1 is a perspective view of a vertical full rotation rotary hook 1 according to an embodiment of the present invention.
【図２】図１に示される軸線に沿う断面図である。FIG. 2 is a sectional view taken along the axis shown in FIG.
【図３】外かま３の正面図である。FIG. 3 is a front view of an outer rotary hook 3.
【図４】内かま４の正面図である。FIG. 4 is a front view of an inner rotary hook 4.
【図５】図２の内かま４の軌条１３、外かま３の軌溝１
１の拡大図である。5 is a rail 13 of the inner hook 4 and a rail groove 1 of the outer hook 3 of FIG.
It is an enlarged view of 1.
【図６】図２の内かま４の軌条１３、外かま３の軌溝１
１の拡大図である。FIG. 6 is a rail 13 of the inner hook 4 and a rail groove 1 of the outer hook 3 of FIG.
It is an enlarged view of 1.
【図７】図２の内かま４の軌条１３、外かま３の軌溝１
１の拡大図である。FIG. 7 is a rail 13 of the inner hook 4 and a rail groove 1 of the outer hook 3 in FIG.
It is an enlarged view of 1.
【図８】合成樹脂製の内かま３４の軌条４３、外かま３
３の軌溝４１の拡大図である。FIG. 8: Rail 43 of synthetic inner hook 34, outer hook 3
It is an enlarged view of the track groove 41 of FIG.
【図９】合成樹脂製の内かま３４の軌条４３、外かま３
３の軌溝４１の拡大図である。FIG. 9: Rail 43 of outer hook 3 and outer hook 3 made of synthetic resin
It is an enlarged view of the track groove 41 of FIG.
【図１０】合成樹脂製の内かま３４の軌条４３、外かま
３３の軌溝４１の拡大図である。10 is an enlarged view of the rail 43 of the inner hook 34 made of synthetic resin and the rail groove 41 of the outer hook 33. FIG.
１ 垂直全回転かま ３，３３ 外かま ３ａ，３３ａ 外かま本体 ４，３４ 内かま ４ａ，３４ａ 内かま本体 ４ｂ 突部 Ｙ 矢符 １１，４１ 軌溝 １３，４３ 軌条 １１ａ，４１ａ 内表面 １３ａ 外表面 Ａ，Ｂ，Ｃ 被覆層 1 Vertical full rotation rotary hook 3,33 Outer rotary hook 3a, 33a Outer rotary hook body 4,34 Inner rotary hook 4a, 34a Inner rotary hook body 4b Projection Y Arrow mark 11,41 Track groove 13,43 Rails 11a, 41a Inner surface 13a Outer surface A, B, C coating layer
Claims (4)
が潤滑剤を含む高密度ポリエチレンから成る被覆層で形
成されていることを特徴とするミシンのかま。1. A rotary hook for a sewing machine, wherein at least a part of an outer surface of a rail of the inner hook is formed of a coating layer made of high density polyethylene containing a lubricant.
が潤滑剤を含む高密度ポリエチレンから成る被覆層で形
成されていることを特徴とするミシンのかま。2. A rotary hook for a sewing machine, wherein at least a part of an inner surface of a groove of the outer rotary hook is formed of a coating layer made of high density polyethylene containing a lubricant.
金属と合成樹脂との複合体から成る内かま本体を有し、
この本体の外周面に前記軌条が形成されることを特徴と
する請求項１記載のミシンのかま。3. The inner hook has an inner hook body made of metal, synthetic resin, or a composite of metal and synthetic resin,
The rotary hook of the sewing machine according to claim 1, wherein the rail is formed on an outer peripheral surface of the main body.
金属と合成樹脂との複合体から成る外かま本体を有し、
この本体の内周面に前記軌溝が形成されることを特徴と
する請求項２記載のミシンのかま。4. The outer hook has an outer hook body made of metal, synthetic resin, or a composite of metal and synthetic resin,
The rotary hook of a sewing machine according to claim 2, wherein the rail groove is formed on an inner peripheral surface of the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18412792A JPH0696061B2 (en) | 1992-07-10 | 1992-07-10 | Sewing machine bite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18412792A JPH0696061B2 (en) | 1992-07-10 | 1992-07-10 | Sewing machine bite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0631084A JPH0631084A (en) | 1994-02-08 |
| JPH0696061B2 true JPH0696061B2 (en) | 1994-11-30 |
Family
ID=16147856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18412792A Expired - Fee Related JPH0696061B2 (en) | 1992-07-10 | 1992-07-10 | Sewing machine bite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696061B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5651323A (en) * | 1994-02-24 | 1997-07-29 | Hirose Manufacturing Co., Ltd. | Hook assembly with coated surfaces for sewing machine |
-
1992
- 1992-07-10 JP JP18412792A patent/JPH0696061B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631084A (en) | 1994-02-08 |
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