JP4064644B2 - sewing machine - Google Patents

sewing machine Download PDF

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Publication number
JP4064644B2
JP4064644B2 JP2001156258A JP2001156258A JP4064644B2 JP 4064644 B2 JP4064644 B2 JP 4064644B2 JP 2001156258 A JP2001156258 A JP 2001156258A JP 2001156258 A JP2001156258 A JP 2001156258A JP 4064644 B2 JP4064644 B2 JP 4064644B2
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Japan
Prior art keywords
needle bar
oil
supply pipe
sewing machine
oil supply
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Expired - Fee Related
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JP2001156258A
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Japanese (ja)
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JP2002346268A (en
Inventor
義啓 山崎
研一郎 井手
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ペガサスミシン製造株式会社
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Priority to JP2001156258A priority Critical patent/JP4064644B2/en
Priority to CNB021265941A priority patent/CN100374636C/en
Priority to TW091207613U priority patent/TW526879U/en
Priority to KR1020020028884A priority patent/KR20020090334A/en
Publication of JP2002346268A publication Critical patent/JP2002346268A/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48—Drying by means of hot air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Sewing Machines And Sewing (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は、クランクの針棒クランクに回転可能に支承された針棒クランクロッドの焼付きを防止するようにしたミシンに関する。
【０００２】
【従来の技術】
この種のミシンにおいては、実開昭６２−１１５８７８号公報に開示されているように、潤滑油を浸透させたフェルト（綿芯）を針棒クランクロッドに間欠的に接触するように配置して、針棒クランクロッドの焼付きを防止している。又、前記公報の考案においては、針棒クランクロッドを回転可能に支承する針棒クランクに空気通過用の螺旋溝を形成し、空気流によって、ミシン駆動時における針棒クランクロッドの温度上昇を抑えるようにしている。
【０００３】
【発明が解決しようとする課題】
ところが、前者においては、針棒の上下ストローク量を増減させるためにクランクに対して針棒クランクの固定位置を変更すると、針棒クランクロッドがフェルトに接触せずに焼付くことがあった。また、後者においては、針棒クランクと針棒クランクロッドとの連結部が動圧型空気軸受の態様になっておらず、油による潤滑も行わないので、針棒クランクロッドの摺動部が摩耗しやすく、耐久性に問題があった。
従って、本発明の課題は、給油装置を用いてミシン駆動時における針棒クランクロッドの温度上昇を抑えることができ、かつ焼付きを防止し、その耐久性を確保できるミシンを提供することにある。
【０００４】
【課題を解決するための手段】
ミシンアームに回動可能に支承される上軸と、上軸の端部に固定され針棒クランクを有するクランクと、針棒クランクに回動可能に支承され針棒抱きを介して針棒に連結した針棒クランクロッドとを有する針棒機構と、該針棒機構の針棒クランクロッドに給油する給油装置とを備えたミシンにおいて、給油装置が、給油ポンプと、該給油ポンプと油受け皿との間に介在する継手と、継手に接続された供給管と、供給管の先端に接続されるとともに供給管より送出される潤滑油の流量を調節する油量調整部材と、該油量調整部材に接続され針棒クランクロッドの上方に吐出部を有する給油管とを備え、継手、供給管、油量調整部材および給油管をミシンアーム内部に配置すると共に、給油管の吐出部より滴下する潤滑油により針棒クランクロッドに給油するようにしたことを特徴とする。
【０００５】
【作用】
本発明によれば、給油管の吐出部より潤滑油が滴下する。給油管の吐出部は針棒クランクロッドの上方に固定配置されているので、潤滑油はミシン駆動中の針棒クランクロッドへ確実に供給され、その油量は油量調整部材にて調整される。
【０００６】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。図１は、本発明に適用されるミシンの要部を示す部分断面図である。上軸１は、ミシンアームＡにおいて略水平に支承され、ミシン用の駆動モータ（図示せず）に連動して一方向に回転する。上軸１の端部にはクランク２が固定されている。針棒クランク３の一方のピン３ａは針棒クランクロッド５の上筒部６内に挿通され、他方のピン３ｂはネジ４でクランク２に固定されている。本実施の形態においては、針棒クランクロッド５が針棒クランクのピン３ａより外れないように、ネジ３ｄで蓋３ｃをピン３ａ先端に固定させてある。
【０００７】
針棒クランクロッド５の上筒部６には、開口孔６ａが形成されている（図２参照）。針棒クランクロッド５の下筒部７は、針棒８にネジ９で固定された針棒抱き１０のピン１０ａに挿通されている。また、針棒抱き１０のピン１０ａ先端は回転可能に支承された角駒３０を有し、角駒３０はミシンアームＡに固定されたガイド部材３１の溝部３１ａに上下スライド可能に支持されている。針棒８は、ミシンアームＡに圧入されたブッシュ１１に摺動可能に支持され、その下端部は針（図示せず）を備える。なお、本実施の形態においては、針棒クランク３の両ピンを偏心させているので、クランク２に対する針棒クランク３の固定位置はネジ４の弛緩時に変更でき、その結果、針棒８の上下ストローク量を変更することができる。
【０００８】
給油管１８（油供給源）より送出される潤滑油は、オイルパン１３より吸い上げられたもので、針棒クランクロッド５への給油に利用される。この吸上げ用の装置としては、図３に示すように、ギヤ式の給油ポンプ１４が利用されている。この給油ポンプ１４はミシンベッドＢに固定されたブラケット１５に取付けられ、給油ポンプ１４のウォームホイール１４ａは下軸（図示せず）の回転に連動して潤滑油の給排を行う。また、この給油ポンプ１４は供給管１６を有しており、供給管１６に送り出された潤滑油はオイルフィルタ１７で浄化される。オイルフィルタ１７で浄化された潤滑油は、ミシンアームＡに配管される給油管１８とミシンベッドＢに配管される給油管１９とへ夫々送出されるようになっている。給油管１９より送出された潤滑油はミシンベッドＢに配置された各機構部に供給される。なお、本実施の形態においては、給油装置の駆動源としてギヤ式の給油ポンプを採用していたが、これに限定されるわけでなく、例えば、ミシン上方に油貯めタンクを付設し重力で給油を行なってもよい。
【０００９】
給油管１８は継手２０を介して油受け皿１２に接続され、継手２０は供給管２１を有している。供給管２１は略水平に延びており、その先端にニードル絞り弁である油量調整部材２２が付設されている。油量調整部材２２の上面は手前下がりに傾斜し、該上面に配置された油量調整ネジ２３（操作部）は作業者に向かって斜めに延設されている。給油管２６は油量調整部材２２に接続され、油量調整部材２２より給油管２６に送出される潤滑油は油量調整ネジ２３のねじ込み量で変更されることとなる。油量調整部材２２に供給される潤滑油は、ミシンの回転速度、即ち、給油ポンプ１４の動作量に応じて決まる。
【００１０】
また、この油量調整ネジ２３上方のミシンアームＡに工具挿入用の孔２４を設け、その孔２４を栓２５により塞いでミシンアームＡ内部を密閉するようにしている。従って、油量調整部材２２の上面は孔２４の下方に位置することとなる。吐出部２６ａは給油管２６の先端部に設けられ、針棒クランクロッド５の上方に固定配置されている。潤滑油は吐出部２６ａより下方に向けて吐出され、針棒クランクロッド５は図４の２点鎖線で示す位置（符号５’，６’）において潤滑油を受けることとなる。吐出部２６ａの隣接部分に切込み部２６ｂを形成し、その結果、吐出部２６ａより滴下する潤滑油が分散しなくなる。
【００１１】
ミシンアームＡの先端部に滴下した潤滑油はスポンジ２７に吸収され、スポンジ２７に吸収された潤滑油は排油管２８を介して給油ポンプ１４へ強制的に吸引される。一方、ミシンベッドＢにおいて各機構部に供給された潤滑油はミシンベッドＢ先端部とオイルパン１３に滴下する。ミシンベッドＢ先端部に滴下した潤滑油は排油管２９を介して給油ポンプ１４へ強制的に吸引される。排油管２８，２９より給油ポンプ１４に吸引された潤滑油はオイルパン１３に吐出される。なお、針棒クランクロッド５の上筒部６に形成された開口孔６ａは、吐出部２６ａより滴下される潤滑油を素早く針棒クランクピン３ａへ供給させるためのものである。
【００１２】
【発明の効果】
以上のように、本発明によれば、滴下する潤滑油を利用して給油を行なっているので、針棒の上下ストローク量を変更しても確実に針棒クランクロッドへ給油することができ、その油量は油量調整部材で調整できる。
【図面の簡単な説明】
【図１】 本発明に適用されるミシンの要部を示す部分断面図である。
【図２】 同ミシンにおける針棒機構の部品展開図である。
【図３】 同ミシンの油給油源を示す要部斜視図である。
【図４】 同ミシンの作用状態を示す拡大説明図である。
【符号の説明】
１ 上軸
２ クランク
３ 針棒クランク
５ 針棒クランクロッド
８ 針棒
１０ 針棒抱き
２１ 供給管
２２ 油量調整部材
２３ 油量調整ネジ（操作部）
２４ 工具挿入用の孔
２５ 栓
２６ 給油管
２６ａ 吐出部
２６ｂ 切込み部
Ａ ミシンアーム
Ｂ ミシンベッド[0001]
[Industrial application fields]
The present invention relates to a sewing machine that prevents seizure of a needle bar crank rod that is rotatably supported by a needle bar crank of the crank.
[0002]
[Prior art]
In this type of sewing machine, as disclosed in Japanese Utility Model Publication No. 62-115878, a felt (cotton core) infiltrated with lubricating oil is disposed so as to be in intermittent contact with the needle bar crank rod. Prevents seizure of the needle bar crank rod. Further, in the device of the above publication, a spiral groove for passing air is formed in the needle bar crank that rotatably supports the needle bar crank rod, and the air flow suppresses the temperature rise of the needle bar crank rod when the sewing machine is driven. I am doing so.
[0003]
[Problems to be solved by the invention]
However, in the former, when the fixed position of the needle bar crank is changed with respect to the crank in order to increase or decrease the amount of vertical stroke of the needle bar, the needle bar crank rod may be seized without contacting the felt. In the latter case, the connecting part between the needle bar crank and the needle bar crank rod is not in the form of a dynamic pressure type air bearing and is not lubricated with oil, so the sliding part of the needle bar crank rod is worn out. It was easy and there was a problem with durability.
Therefore, the subject of this invention is providing the sewing machine which can suppress the temperature rise of the needle bar crank rod at the time of a sewing machine drive using an oil supply apparatus, can prevent seizing, and can ensure the durability. .
[0004]
[Means for Solving the Problems]
An upper shaft that is rotatably supported by the sewing machine arm, a crank that is fixed to the end of the upper shaft and has a needle bar crank, and is rotatably supported by the needle bar crank and is connected to the needle bar via a needle bar holder. In a sewing machine provided with a needle bar mechanism having a needle bar crank rod and an oil supply device for supplying oil to the needle bar crank rod of the needle bar mechanism, the oil supply device includes an oil supply pump, an oil supply pump, and an oil tray. A joint interposed therebetween, a supply pipe connected to the joint, an oil amount adjusting member connected to the tip of the supply pipe and adjusting the flow rate of the lubricating oil sent from the supply pipe, and the oil amount adjusting member A lubricating oil which is connected and has an oil supply pipe having a discharge part above the needle bar crank rod, and which has a joint, a supply pipe, an oil amount adjusting member and an oil supply pipe arranged inside the sewing machine arm and dripped from the discharge part of the oil supply pipe Needle bar crank lock Characterized by being adapted to refuel.
[0005]
[Action]
According to the present invention, the lubricating oil drops from the discharge part of the oil supply pipe. Since the discharge portion of the oil supply pipe is fixedly disposed above the needle bar crank rod, the lubricating oil is reliably supplied to the needle bar crank rod that is being driven by the sewing machine, and the oil amount is adjusted by the oil amount adjusting member. .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view showing a main part of a sewing machine applied to the present invention. The upper shaft 1 is supported substantially horizontally in the sewing machine arm A, and rotates in one direction in conjunction with a driving motor (not shown) for the sewing machine. A crank 2 is fixed to the end of the upper shaft 1. One pin 3 a of the needle bar crank 3 is inserted into the upper tube portion 6 of the needle bar crank rod 5, and the other pin 3 b is fixed to the crank 2 with a screw 4. In the present embodiment, the lid 3c is fixed to the tip of the pin 3a with a screw 3d so that the needle bar crank rod 5 does not come off from the pin 3a of the needle bar crank.
[0007]
An opening hole 6a is formed in the upper cylinder portion 6 of the needle bar crank rod 5 (see FIG. 2). The lower cylinder portion 7 of the needle bar crank rod 5 is inserted into a pin 10 a of a needle bar holder 10 fixed to the needle bar 8 with a screw 9. The tip of the pin 10a of the needle bar holder 10 has a square piece 30 that is rotatably supported. The square piece 30 is supported by a groove 31a of a guide member 31 fixed to the sewing machine arm A so as to be slidable up and down. . The needle bar 8 is slidably supported by a bush 11 press-fitted into the sewing machine arm A, and a lower end portion thereof includes a needle (not shown). In this embodiment, since both pins of the needle bar crank 3 are eccentric, the fixing position of the needle bar crank 3 with respect to the crank 2 can be changed when the screw 4 is loosened. The stroke amount can be changed.
[0008]
Lubricating oil delivered from the oil supply pipe 18 (oil supply source) is sucked up from the oil pan 13 and is used for oil supply to the needle bar crank rod 5. As this suction device, a gear-type oil supply pump 14 is used as shown in FIG. The oil supply pump 14 is attached to a bracket 15 fixed to the sewing machine bed B, and a worm wheel 14a of the oil supply pump 14 supplies and discharges lubricating oil in conjunction with rotation of a lower shaft (not shown). The oil supply pump 14 has a supply pipe 16, and the lubricating oil sent to the supply pipe 16 is purified by the oil filter 17. The lubricating oil purified by the oil filter 17 is sent to an oil supply pipe 18 piped to the sewing machine arm A and an oil supply pipe 19 piped to the sewing machine bed B, respectively. Lubricating oil delivered from the oil supply pipe 19 is supplied to each mechanism unit arranged in the sewing machine bed B. In the present embodiment, a gear type oil pump is used as a drive source of the oil supply device. However, the present invention is not limited to this. For example, an oil storage tank is provided above the sewing machine and oil is supplied by gravity. May be performed.
[0009]
The oil supply pipe 18 is connected to the oil tray 12 via a joint 20, and the joint 20 has a supply pipe 21. The supply pipe 21 extends substantially horizontally, and an oil amount adjusting member 22 that is a needle throttle valve is attached to the tip of the supply pipe 21. The upper surface of the oil amount adjusting member 22 is inclined downward and the oil amount adjusting screw 23 (operation unit) arranged on the upper surface is extended obliquely toward the operator. The oil supply pipe 26 is connected to the oil amount adjusting member 22, and the lubricating oil sent from the oil amount adjusting member 22 to the oil supply pipe 26 is changed by the screwing amount of the oil amount adjusting screw 23. The lubricating oil supplied to the oil amount adjusting member 22 is determined according to the rotational speed of the sewing machine, that is, the operation amount of the oil supply pump 14.
[0010]
Further, a hole 24 for inserting a tool is provided in the sewing machine arm A above the oil amount adjusting screw 23, and the hole 24 is closed with a stopper 25 so that the inside of the sewing machine arm A is sealed. Therefore, the upper surface of the oil amount adjusting member 22 is positioned below the hole 24. The discharge part 26 a is provided at the tip of the oil supply pipe 26, and is fixedly disposed above the needle bar crank rod 5. The lubricating oil is discharged downward from the discharge portion 26a, and the needle bar crank rod 5 receives the lubricating oil at the positions (reference numerals 5 ′ and 6 ′) indicated by the two-dot chain line in FIG. The cut portion 26b is formed in the adjacent portion of the discharge portion 26a, and as a result, the lubricating oil dropped from the discharge portion 26a is not dispersed.
[0011]
Lubricating oil dropped on the tip of the sewing machine arm A is absorbed by the sponge 27, and the lubricating oil absorbed by the sponge 27 is forcibly sucked into the oil supply pump 14 through the oil drain pipe 28. On the other hand, the lubricating oil supplied to each mechanism portion in the sewing bed B drops on the tip of the sewing bed B and the oil pan 13. The lubricating oil dropped on the tip of the sewing machine bed B is forcibly sucked into the oil supply pump 14 through the oil drain pipe 29. Lubricating oil sucked into the oil supply pump 14 from the oil drain pipes 28 and 29 is discharged to the oil pan 13. In addition, the opening hole 6a formed in the upper cylinder part 6 of the needle bar crank rod 5 is for supplying the lubricating oil dripped from the discharge part 26a to the needle bar crank pin 3a quickly.
[0012]
【The invention's effect】
As described above, according to the present invention, since lubrication is performed using the dripping lubricant, the needle bar crank rod can be reliably lubricated even if the vertical stroke amount of the needle bar is changed, The oil amount can be adjusted by an oil amount adjusting member.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing a main part of a sewing machine applied to the present invention.
FIG. 2 is a part development view of a needle bar mechanism in the sewing machine.
FIG. 3 is a main part perspective view showing an oil supply source of the sewing machine.
FIG. 4 is an enlarged explanatory view showing an action state of the sewing machine.
[Explanation of symbols]
1 Upper shaft 2 Crank 3 Needle bar crank 5 Needle bar crank rod 8 Needle bar 10 Needle bar holder 21 Supply pipe 22 Oil amount adjusting member 23 Oil amount adjusting screw (operating part)
24 Tool insertion hole 25 Plug 26 Oil supply pipe 26a Discharge part 26b Cutting part A Sewing arm B Sewing bed

Claims (1)

ミシンアームに回動可能に支承される上軸と、上軸の端部に固定され針棒クランクを有するクランクと、針棒クランクに回動可能に支承され針棒抱きを介して針棒に連結した針棒クランクロッドとを有する針棒機構と、該針棒機構の針棒クランクロッドに給油する給油装置とを備えたミシンにおいて、給油装置が、給油ポンプと、該給油ポンプと油受け皿との間に介在する継手と、継手に接続された供給管と、供給管の先端に接続されるとともに供給管より送出される潤滑油の流量を調節する油量調整部材と、該油量調整部材に接続され針棒クランクロッドの上方に吐出部を有する給油管とを備え、継手、供給管、油量調整部材および給油管をミシンアーム内部に配置すると共に、給油管の吐出部より滴下する潤滑油により針棒クランクロッドに給油するようにしたことを特徴とするミシン。An upper shaft that is rotatably supported by the sewing machine arm, a crank that is fixed to the end of the upper shaft and has a needle bar crank, and is rotatably supported by the needle bar crank and is connected to the needle bar via a needle bar holder. In a sewing machine provided with a needle bar mechanism having a needle bar crank rod and an oil supply device for supplying oil to the needle bar crank rod of the needle bar mechanism, the oil supply device includes an oil supply pump, an oil supply pump, and an oil tray. A joint interposed therebetween, a supply pipe connected to the joint, an oil amount adjusting member connected to the tip of the supply pipe and adjusting the flow rate of the lubricating oil sent from the supply pipe, and the oil amount adjusting member A lubricating oil which is connected and has an oil supply pipe having a discharge part above the needle bar crank rod, and which has a joint, a supply pipe, an oil amount adjusting member and an oil supply pipe arranged inside the sewing machine arm and dripped from the discharge part of the oil supply pipe Needle bar crank lock Sewing machine characterized by being adapted to refuel.
JP2001156258A 2001-05-25 2001-05-25 sewing machine Expired - Fee Related JP4064644B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2001156258A JP4064644B2 (en) 2001-05-25 2001-05-25 sewing machine
CNB021265941A CN100374636C (en) 2001-05-25 2002-05-23 Sewing machine
TW091207613U TW526879U (en) 2001-05-25 2002-05-24 Sewing machine
KR1020020028884A KR20020090334A (en) 2001-05-25 2002-05-24 Sewing machine

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JP2001156258A JP4064644B2 (en) 2001-05-25 2001-05-25 sewing machine

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JP2006010781A Division JP2006110377A (en) 2006-01-19 2006-01-19 Sewing machine

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JP4064644B2 true JP4064644B2 (en) 2008-03-19

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JP5303410B2 (en) * 2009-09-18 2013-10-02 ペガサスミシン製造株式会社 Sewing machine oiling equipment
CN103556409B (en) * 2013-11-08 2015-01-28 浙江中森缝纫机有限公司 Special arm type hemming sewing machine with automatic oil supply system
CN103614870B (en) * 2013-12-18 2016-03-16 杰克缝纫机股份有限公司 Sewing machines oil supply system

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TW526879U (en) 2003-04-01
CN100374636C (en) 2008-03-12
JP2002346268A (en) 2002-12-03
KR20020090334A (en) 2002-12-02

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