JP2006141433A

JP2006141433A - Shuttle lubricating mechanism for sewing machine

Info

Publication number: JP2006141433A
Application number: JP2004331676A
Authority: JP
Inventors: Toshiyuki Iwata; 寿之岩田; Seiji Goto; 聖司後藤; Takeshi Kubo; 毅司久保
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2004-11-16
Filing date: 2004-11-16
Publication date: 2006-06-08

Abstract

<P>PROBLEM TO BE SOLVED: To enable the replacement time for a filter to be accurately grasped, and to facilitate the maintenance for a shuttle. <P>SOLUTION: This shuttle lubricating mechanism (100) for a sewing machine is equipped with an oil storing means (3) for storing an oil (2) which is fed to the shuttle (1) of the sewing machine, an oil feeding means (4) which feeds the oil (2) stored in the oil storing means (3) to the shuttle (1), oil feeding paths (61 and 62) which connect the shuttle (1) and the oil feeding means (4), an oil draining path (8) which is branched at the middle of the oil feeding paths (61 and 62) and is connected with the oil storing means (3), an oil draining flow rate adjusting means (9) which adjusts the flow rate of the oil (2) flowing in the oil draining path (8), and the filter (10) which filters the oil (2) being fed to the shuttle (1). In the shuttle lubricating mechanism (100), the oil draining flow rate adjusting means (9) is constituted in such a manner that a pressure in the oil feeding paths (61 and 62) may become less than a specified pressure value when the adjustment is performed until the flow rate of the oil (2) flowing in the oil draining path (8) becomes a minimum value. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ミシンの釜給油機構に関する。 The present invention relates to a hook oiling mechanism for a sewing machine.

従来、ミシンの釜には高速で回転するものがあり、このような釜には、焼き付きや摩耗を防止するために潤滑油が供給される。
釜給油機構について説明すると、図９に示すように、プランジャポンプ１０１によりオイルタンク１０２から潤滑油１０３を汲み上げ、給油管１０４を介し、該給油管１０４は釜軸１０５ａ内を通り該釜軸１０５ａの一端に固定された釜１０５に潤滑油１０３を給油する。釜１０５への給油の際には、釜１０５と釜軸１０５ａの間に設けられたフィルタ（油芯）１０６により潤滑油１０３が濾過され、潤滑油１０３内の不純物が取り除かれる。給油管１０４の途中には、給油管１０４から分岐し、オイルタンク１０２に接続された排油管１０７が設けられており、給油管１０４と排油管１０７の分岐点近傍には、排油管１０７内の潤滑油１０３の流量を調節する油量調節ねじ１０８が設けられている。そして、潤滑油１０３は、油量調節ねじ１０８により調節された量だけ排油管１０７を介してオイルタンク１０２に戻される。 Conventionally, there are sewing machine hooks that rotate at high speed, and such a hook is supplied with lubricating oil to prevent seizure and wear.
The hook oil supply mechanism will be described. As shown in FIG. 9, the lubricating oil 103 is pumped up from the oil tank 102 by the plunger pump 101, and the oil supply pipe 104 passes through the hook shaft 105a via the oil supply pipe 104. Lubricating oil 103 is supplied to the hook 105 fixed to one end. When oil is supplied to the hook 105, the lubricating oil 103 is filtered by a filter (oil core) 106 provided between the hook 105 and the hook shaft 105a, and impurities in the lubricating oil 103 are removed. An oil discharge pipe 107 branched from the oil supply pipe 104 and connected to the oil tank 102 is provided in the middle of the oil supply pipe 104, and in the vicinity of the branch point between the oil supply pipe 104 and the oil discharge pipe 107, An oil amount adjusting screw 108 for adjusting the flow rate of the lubricating oil 103 is provided. The lubricating oil 103 is returned to the oil tank 102 through the oil drain pipe 107 by an amount adjusted by the oil amount adjusting screw 108.

また、他の釜給油機構としては、図１０に示すように、プランジャポンプ１１１によりオイルタンク１１２から潤滑油１１３を汲み上げ、給油管１１４を介して釜１１５に潤滑油１１３を給油する。釜１１５への給油の際には、釜１１５内に設けられたフィルタ（油芯）１１６により潤滑油１１３が濾過され、潤滑油１１３内の不純物が取り除かれる。釜１１５とオイルタンク１１２は排油管１１７によって接続されており、排油管１１７の途中には釜１１５に給油される潤滑油１１３の油量を調節する油量調節ねじ１１８が設けられている。そして、潤滑油１１３は、油量調節ねじ１１８により調節された量だけ排油管１１７を介してオイルタンク１１２に戻される。 As another hook oil supply mechanism, as shown in FIG. 10, the lubricant oil 113 is pumped up from the oil tank 112 by the plunger pump 111 and supplied to the hook 115 via the oil supply pipe 114. When oil is supplied to the hook 115, the lubricating oil 113 is filtered by a filter (oil core) 116 provided in the hook 115, and impurities in the lubricating oil 113 are removed. The hook 115 and the oil tank 112 are connected by an oil discharge pipe 117, and an oil amount adjusting screw 118 that adjusts the amount of lubricating oil 113 supplied to the hook 115 is provided in the middle of the oil discharge pipe 117. Then, the lubricating oil 113 is returned to the oil tank 112 through the oil drain pipe 117 by the amount adjusted by the oil amount adjusting screw 118.

また、釜に供給される潤滑油の油量は油量調節ねじにより調節された潤滑油が過剰に釜に供給されないように、さらにフィルタで制限されている。そのフィルタは、例えば、プラスチック微粒子の焼結体で形成したり（例えば、特許文献１参照。）、フィルタのうち潤滑油が流れてくる上流側に角部を形成して（例えば、特許文献２参照。）釜に供給される潤滑油の油量を制限するものが開示されている。
実開平６−３１６８３号公報特開平７−２６５５７３号公報 Further, the amount of lubricating oil supplied to the hook is further limited by a filter so that the lubricating oil adjusted by the oil amount adjusting screw is not supplied to the hook excessively. For example, the filter is formed of a sintered body of plastic fine particles (see, for example, Patent Document 1), or a corner portion is formed on the upstream side of the filter from which lubricating oil flows (for example, Patent Document 2). See :) Discloses what limits the amount of lubricating oil supplied to the hook.
Japanese Utility Model Publication No. 6-31683 JP-A-7-265573

ところで、図９において、釜１０５の中のフィルタ１０６が汚れてくると、フィルタ１０６に付着した不純物が潤滑油１０３の流れを妨げるため、釜１０５に十分に給油されなくなる。しかし、作業者は釜１０５を分解しない限りフィルタ１０６を見ることはできないため、外部からフィルタ１０６の交換時期を的確に知ることができなかった。また、作業者は外部からフィルタ１０６の汚れ具合を知ることができないため、フィルタ１０６が汚れているよりもむしろ釜１０５への給油量が不足していると誤認してしまう。そのため、本来なら油量調節ねじ１０８が、図１１に示すような位置が最適であったとしても、作業者は、図１２に示すように、油量調節ねじ１０８を限界まで閉めて排油管１０７に潤滑油１０３が流れないように操作してしまう。これにより、給油管１０４内の圧力は次第に大きくなり、給油管１０４内の潤滑油１０３は給油管１０４の連結部（例えば、接続部材１０４ａ）や各部のオイルシール（例えば、釜軸１０５ａを支持する軸受１０５ｂに設けられたオイルシール１０５ｃ）から漏れだしてしまうため、メンテナンスに多大な時間を費やしてしまうという問題があった。 In FIG. 9, when the filter 106 in the hook 105 becomes dirty, impurities attached to the filter 106 prevent the flow of the lubricating oil 103, so that the hook 105 is not sufficiently supplied with oil. However, since the operator cannot see the filter 106 unless the hook 105 is disassembled, the operator has not been able to accurately know the replacement time of the filter 106 from the outside. Further, since the operator cannot know the degree of contamination of the filter 106 from the outside, it is mistaken that the amount of oil supplied to the hook 105 is insufficient rather than the filter 106 being dirty. Therefore, even if the oil amount adjusting screw 108 is originally in the optimum position as shown in FIG. 11, the operator closes the oil amount adjusting screw 108 to the limit as shown in FIG. Therefore, the operation is performed so that the lubricating oil 103 does not flow. As a result, the pressure in the oil supply pipe 104 gradually increases, and the lubricating oil 103 in the oil supply pipe 104 supports the connecting portion (for example, the connecting member 104a) of the oil supply pipe 104 and the oil seal (for example, the hook shaft 105a) of each part. Since the oil seal 105c) provided in the bearing 105b leaks, there is a problem that a great amount of time is spent for maintenance.

そこで、本発明は、上記課題を解決するためになされたものであり、フィルタの交換時期を的確に知ることができ、釜のメンテナンスを容易に行うことができるミシンの釜給油機構を提供することを目的とする。 Accordingly, the present invention has been made to solve the above-described problem, and provides a sewing machine oiling mechanism for a sewing machine that can accurately know the replacement time of a filter and can easily perform maintenance of the hook. With the goal.

以上の課題を解決するため、請求項１に記載の発明は、ミシンの釜に供給する油を貯溜する油貯溜手段と、この油貯溜手段に貯溜された油を前記釜に供給する油供給手段と、前記釜と前記油供給手段とを接続する油供給経路と、前記油供給経路の途中で分岐し、前記油貯溜手段に接続された排油経路と、前記排油経路を流れる油の流量を調節する排油流量調節手段と、前記釜に供給される油を濾過するフィルタと、を備えるミシンの釜給油機構において、前記排油流量調節手段により、前記排油経路を流れる油の流量が最小値となるまで調節した場合に、前記油供給流路内の圧力が所定圧力値以上になることを規制する規制手段を設けたことを特徴とする。
ここで、所定圧力値とは、油供給経路や釜等の継ぎ目やシール部分から油が漏れ始めるときの油供給経路内の圧力をいう。 In order to solve the above problems, the invention according to claim 1 is an oil storage means for storing oil to be supplied to a sewing machine hook, and an oil supply means for supplying the oil stored in the oil storage means to the hook. An oil supply path that connects the hook and the oil supply means, an oil discharge path that branches in the middle of the oil supply path, and that is connected to the oil storage means, and a flow rate of oil that flows through the oil discharge path And a filter for filtering the oil supplied to the hook, wherein the oil flow rate adjusting means controls the flow rate of the oil flowing through the oil discharge path. A regulating means is provided for regulating that the pressure in the oil supply flow path becomes equal to or higher than a predetermined pressure value when the pressure is adjusted to a minimum value.
Here, the predetermined pressure value refers to the pressure in the oil supply path when oil starts to leak from the oil supply path and the joints and seals of the hooks.

請求項１に記載の発明によれば、規制手段は、排油経路を流れる油の流量を最小値となるまで調節した場合であっても、油供給流路内の圧力が所定圧力値以上になることを規制するため、油供給経路を最も絞った状態であっても油供給経路や釜等の継ぎ目やシール部分から油が漏れることがない。逆に言えば、排油流量調節手段を、排油経路を流れる油の流量が最小値となるまで調節した場合に釜に十分な油が供給されていない場合には、フィルタの汚れによる釜への油の供給不足であると判断できるため、釜や油給油経路を分解してフィルタの汚れを確認しなくても、フィルタの交換時期を知ることができる。
よって、フィルタの交換時期を的確に知ることができ、釜のメンテナンスを容易に行うことができる。 According to the first aspect of the present invention, even when the regulating means adjusts the flow rate of the oil flowing through the oil drain path until it reaches a minimum value, the pressure in the oil supply flow path becomes a predetermined pressure value or more. Therefore, even if the oil supply path is most narrowed, the oil does not leak from the oil supply path, the joint of the hook or the like, or the seal portion. In other words, if the oil flow rate adjusting means is adjusted until the flow rate of the oil flowing through the oil discharge path reaches the minimum value, if the oil is not supplied to the hook, Therefore, it is possible to know the replacement time of the filter without disassembling the hook or the oil supply path and checking the filter for contamination.
Therefore, it is possible to accurately know the replacement time of the filter, and the maintenance of the hook can be easily performed.

請求項２に記載の発明は、請求項１に記載のミシンの釜給油機構において、前記規制手段は、前記排油流量調節手段により調節される前記排油経路の油の流量が所定流量値以下になることを規制することを特徴とする。
ここで、所定流量値とは、油供給経路や釜等の継ぎ目やシール部分から油が漏れ始めるときの排油経路内を流れる油の流量をいう。 According to a second aspect of the present invention, in the hook oil supply mechanism of the sewing machine according to the first aspect, the regulating means is configured such that the flow rate of oil in the drainage path adjusted by the drained oil flow rate adjusting means is equal to or less than a predetermined flow rate value. It is characterized by restricting becoming.
Here, the predetermined flow rate value refers to the flow rate of the oil flowing in the oil discharge path when the oil starts to leak from the joint or seal part of the oil supply path or the hook.

請求項２に記載の発明によれば、規制手段が排油流量調節手段により調節される排油経路の油の流量が所定流量値以下になることを規制するため、排油経路は完全に閉塞されることがなく、油供給経路内の圧力が過剰に上昇することを防止できる。これにより、油供給経路や釜等の継ぎ目やシール部分から油が漏れることがない。よって、フィルタの交換時期を的確に知ることができ、釜のメンテナンスを容易に行うことができる。 According to the second aspect of the present invention, since the regulating means regulates that the flow rate of the oil in the drainage path adjusted by the drainage flow rate regulating means is below a predetermined flow rate value, the drainage path is completely blocked. This prevents the pressure in the oil supply path from rising excessively. As a result, oil does not leak from the seam or seal part of the oil supply path or the hook. Therefore, it is possible to accurately know the replacement time of the filter, and the maintenance of the hook can be easily performed.

請求項３に記載の発明は、請求項１又は２に記載のミシンの釜給油機構において、前記排油流量調節手段は、前記排油経路に出没して前記排油経路における油の流域を調節することを特徴とする。 According to a third aspect of the present invention, in the hook oil supply mechanism of the sewing machine according to the first or second aspect, the waste oil flow rate adjusting means adjusts an oil flow area in the waste oil path by moving in and out of the waste oil path. It is characterized by doing.

請求項３に記載の発明によれば、排油流量調節手段は、排油経路に出没して排油経路における油の流域を調節するものであるため、油の粘性に応じて油の流域を調節することにより、あらゆる油に対応させることができる。 According to the third aspect of the present invention, the waste oil flow rate adjusting means adjusts the oil flow area in the oil discharge path by appearing in and out of the oil discharge path, so that the oil flow area is adjusted according to the viscosity of the oil. By adjusting, it can correspond to any oil.

請求項４に記載の発明は、請求項３に記載のミシンの釜給油機構において、前記排油流量調節手段は、前記排油経路に最も突出させた際に前記排油経路内を閉塞する閉塞部を有し、前記閉塞部に、油を通過させる通過部を形成したことを特徴とする。 According to a fourth aspect of the present invention, in the hook oil supply mechanism of the sewing machine according to the third aspect, the drainage flow rate adjusting means is a blockage that blocks the inside of the drainage path when protruded most into the drainage path. And a passage portion through which oil passes is formed in the closed portion.

請求項４に記載の発明によれば、排油流量調節手段は、閉塞部を排油経路に最も突出させた場合であっても、通過部により油を通過させることができるので、作業者は閉塞部を限界まで排油経路に突出させるだけでよく、排油経路に油が流れるように排油流量調節手段の突出量の調節作業が不要となる。 According to the fourth aspect of the present invention, the waste oil flow rate adjusting means can allow the oil to pass through the passage portion even when the closed portion protrudes most into the oil drain passage. It is only necessary to project the blocking portion to the oil discharge path to the limit, and the adjustment work of the protrusion amount of the oil discharge flow rate adjusting means is unnecessary so that the oil flows in the oil discharge path.

請求項５に記載の発明は、請求項３に記載のミシンの釜給油機構において、前記排油流量調節手段は、先端に向かうにつれて断面が小さくなるよう形成されたテーパ部を有し、前記テーパ部の移動経路上に、前記テーパ部の移動方向に交差する方向から出没する移動規制部材を設けたことを特徴とする。 According to a fifth aspect of the present invention, in the hook oil supply mechanism of the sewing machine according to the third aspect, the oil discharge flow rate adjusting means has a taper portion formed so that a cross section becomes smaller toward the tip, and the taper A movement restricting member that protrudes and protrudes from a direction intersecting the moving direction of the tapered portion is provided on the moving path of the portion.

請求項５に記載の発明によれば、排油流量調節手段を排油経路に向けて突出させていくと、やがてテーパ部は移動規制部材に接触し、排油流量調節手段の移動が規制される。これにより、排油流量調節手段を移動できるところまで移動させるだけで、排油流量調節手段は排油経路内に必要な流量を確保できるだけの隙間を空けた状態で停止するため、排油流量調節手段の突出量の調節作業が不要となる。 According to the fifth aspect of the present invention, when the drain oil flow rate adjusting means is protruded toward the oil drain path, the taper portion eventually comes into contact with the movement restricting member, and the movement of the oil drain flow rate adjusting means is restricted. The This makes it possible to move the oil flow rate adjusting means to a place where it can be moved, and the oil flow rate adjusting means stops with a gap sufficient to ensure the required flow rate in the oil discharge path. It is not necessary to adjust the protruding amount of the means.

請求項６に記載の発明は、請求項１〜５のいずれか一項に記載のミシンの釜給油機構において、前記油供給経路は管状であって、前記フィルタを該油供給経路内に設けたことを特徴とする。 According to a sixth aspect of the present invention, in the hook oil supply mechanism for the sewing machine according to any one of the first to fifth aspects, the oil supply path is tubular, and the filter is provided in the oil supply path. It is characterized by that.

請求項６に記載の発明によれば、釜の機構よりも油給油経路の方が分解、組立が簡単であるため、フィルタが釜の内部や釜軸内等に設けられていた場合に比べてフィルタの交換作業を容易に行うことができる。 According to the sixth aspect of the present invention, since the oil supply path is easier to disassemble and assemble than the hook mechanism, compared to the case where the filter is provided in the hook or in the hook shaft. The filter can be easily replaced.

請求項７に記載の発明は、請求項６に記載のミシンの釜給油機構において、前記油供給経路の少なくとも一部を、前記フィルタが外部から視認可能となるように構成したことを特徴とする。 The invention according to claim 7 is the sewing machine oil supply mechanism of the sewing machine according to claim 6, wherein at least a part of the oil supply path is configured such that the filter is visible from the outside. .

請求項７に記載の発明によれば、油供給経路の少なくとも一部は、フィルタが外部から視認可能であるため、フィルタの汚れを点検するために釜や油供給経路を分解する必要がなくなる。よって、フィルタを的確な時期に交換することができ、無駄な点検作業を無くすことができる。 According to the seventh aspect of the present invention, since at least a part of the oil supply path allows the filter to be visually recognized from the outside, it is not necessary to disassemble the hook and the oil supply path in order to check for dirt on the filter. Therefore, the filter can be replaced at an appropriate time, and useless inspection work can be eliminated.

請求項７に記載の発明によれば、油供給経路は、フィルタが外部から視認可能であるため、フィルタの汚れを点検するために釜や油供給経路を分解する必要がなくなる。よって、フィルタを的確な時期に交換することができ、無駄な点検作業を無くすことができる。 According to the seventh aspect of the invention, since the filter can be visually recognized from the outside in the oil supply path, it is not necessary to disassemble the hook and the oil supply path in order to check the filter for dirt. Therefore, the filter can be replaced at an appropriate time, and useless inspection work can be eliminated.

以下、図面を参照して、本発明に係るミシンの釜給油機構の最良の形態について詳細に説明する。
〔実施形態１〕
＜ミシンの釜給油機構の構成＞
実施形態１におけるミシンの釜給油機構の構成について説明する。
図１に示すように、釜給油機構１００には、ミシンの釜１に供給する油２を貯溜する油貯溜手段としてのオイルタンク３が設けられ、このオイルタンク３には、オイルタンク３に貯溜された油２を釜１に供給する油供給手段としてのプランジャポンプ４の吸引口４１が吸引管５を介して接続されている。また、プランジャポンプ４の吐出口４２には、釜１に油２を供給する油供給経路としての給油管６１が接続されている。この給油管６１には油２の経路を二つに分ける分岐部材７が設けられ、分岐部材７の一方にはオイルタンク３に接続された排油経路としての排油管８が接続されている。分岐部材７と排油管８の接続部には、排油管８を流れる油２の流量を調節する排油流量調節手段としての油量調節ねじ９が設けられている。 Hereinafter, the best mode of a hook oil supply mechanism for a sewing machine according to the present invention will be described in detail with reference to the drawings.
Embodiment 1
<Configuration of sewing machine oil supply mechanism>
A configuration of the hook oil supply mechanism of the sewing machine in the first embodiment will be described.
As shown in FIG. 1, the hook oil supply mechanism 100 is provided with an oil tank 3 as oil storage means for storing oil 2 to be supplied to the sewing machine hook 1, and the oil tank 3 stores oil in the oil tank 3. A suction port 41 of a plunger pump 4 as an oil supply means for supplying the oil 2 to the hook 1 is connected via a suction pipe 5. An oil supply pipe 61 serving as an oil supply path for supplying the oil 2 to the hook 1 is connected to the discharge port 42 of the plunger pump 4. The oil supply pipe 61 is provided with a branch member 7 that divides the path of the oil 2 into two, and an oil drain pipe 8 serving as an oil drain path connected to the oil tank 3 is connected to one of the branch members 7. An oil amount adjusting screw 9 is provided at a connecting portion between the branch member 7 and the oil drain pipe 8 as a drain oil flow rate adjusting means for adjusting the flow rate of the oil 2 flowing through the oil drain pipe 8.

釜１は軸受１ｂを介してミシンフレームに支持された釜軸１ａの端部に固定されており、該釜軸１ａの内部を介して釜１に油２が供給される。その釜軸１ａの内部と釜１の内部との間には、給油管６２を流れてきた油２を釜１に供給する直前に濾過して油２に含まれる不純物を除去するとともに油量を制限するフィルタ１０が設けられており、このフィルタ１０を通過した油２が釜１に供給される。
図２に示すように、分岐部材７には、給油管６１から流れてくる油２を取り込む取込孔７１と、取込孔７１に連通され、取込孔７１から取り込んだ油２を給油管６２に戻す戻し孔７２と、取込孔７１及び戻し孔７２に連通され、排油管８に油２を排出する排出孔７３と、取込孔７１、戻し孔７２及び排出孔７３に連通するとともに、取込孔７１と戻し孔７２の合流部７ａと排出孔７３との間に形成され、油量調節ねじ９が螺合可能とされた調節孔７４が形成されている。
取込孔７１は接続部材７５を介して給油管６１と接続され、戻し孔７２は接続部材７６を介して給油管６２と接続され、排出孔７３は接続部材７７を介して排油管８と接続されている。調節孔７４の内周壁には油量調節ねじ９に螺合する雌ねじ部７４ａが形成されている。 The hook 1 is fixed to the end of the hook shaft 1a supported by the sewing machine frame via a bearing 1b, and oil 2 is supplied to the hook 1 through the inside of the hook shaft 1a. Between the inside of the hook shaft 1 a and the inside of the hook 1, the oil 2 flowing through the oil supply pipe 62 is filtered immediately before being supplied to the hook 1 to remove impurities contained in the oil 2 and to reduce the amount of oil. A limiting filter 10 is provided, and oil 2 that has passed through the filter 10 is supplied to the hook 1.
As shown in FIG. 2, the branch member 7 is connected to the intake hole 71 for taking in the oil 2 flowing from the oil supply pipe 61, and the oil 2 taken in from the intake hole 71 is connected to the intake hole 71. The return hole 72 is connected to the return hole 72, is connected to the intake hole 71 and the return hole 72, and is connected to the discharge hole 73 that discharges the oil 2 to the oil discharge pipe 8, and the intake hole 71, the return hole 72, and the discharge hole 73. An adjustment hole 74 is formed between the joining portion 7a of the intake hole 71 and the return hole 72 and the discharge hole 73, and the oil amount adjusting screw 9 can be screwed therein.
The intake hole 71 is connected to the oil supply pipe 61 via the connection member 75, the return hole 72 is connected to the oil supply pipe 62 via the connection member 76, and the discharge hole 73 is connected to the oil discharge pipe 8 via the connection member 77. Has been. On the inner peripheral wall of the adjustment hole 74, a female screw portion 74a that is screwed into the oil amount adjusting screw 9 is formed.

油量調節ねじ９は、調節孔７４に螺合させる際にドライバー等で回転力を付与する頭部９１と、調節孔７４に挿入される挿入部９２とが一体に形成されている。
頭部９１は、円盤状に形成され、上面にはドライバーと係合させるための係合溝９１ａが形成されている。頭部９１の直径は、調節孔７４の直径よりも大きくなるように形成されており、挿入部９２を調節孔７４に過剰に挿入しようとしても頭部９１がストッパとなって挿入が規制されるようになっている。すなわち、頭部９１は、排油管８の油２の流量が給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの流量値以下になることを規制する規制手段として機能する。
挿入部９２は、頭部９１の下面に形成された軸部９２ａと、軸部９２ａの先端に形成され、雌ねじ部７４ａに螺合する雄ねじ部９２ｂと、雄ねじ部９２ｂの先端に形成され、合流部と排油管８の間の空間を閉塞する位置と解放する位置とに移動可能な栓部９２ｃが形成されている。雄ねじ部９２ｂには、シールテープが巻回されており、雌ねじ部７４ａと雄ねじ部９２ｂとの隙間から油２が調節孔７４の外に漏れないようになっている。栓部９２ｃには、先端に向かうにつれて断面が縮径されるようなテーパ部９２ｄが形成されており、排油管８への油２の流れを極度に阻害しないようになっている。 The oil amount adjusting screw 9 is integrally formed with a head portion 91 that applies a rotational force with a screwdriver or the like when screwed into the adjusting hole 74 and an insertion portion 92 that is inserted into the adjusting hole 74.
The head 91 is formed in a disk shape, and an engaging groove 91a for engaging with a driver is formed on the upper surface. The diameter of the head 91 is formed so as to be larger than the diameter of the adjustment hole 74. Even if the insertion portion 92 is excessively inserted into the adjustment hole 74, the insertion is restricted by the head 91 serving as a stopper. It is like that. That is, in the head portion 91, the flow rate of the oil 2 in the oil discharge pipe 8 starts to leak from the joint between the oil supply pipes 61 and 62 and the branch member 7, the joint between the oil supply pipe 62 and the hook 1, and the seal portion of the hook 1. It functions as a restricting means that restricts the flow rate from being less than the current flow rate value.
The insertion portion 92 is formed at the shaft portion 92a formed on the lower surface of the head portion 91, the male screw portion 92b formed at the tip of the shaft portion 92a and screwed into the female screw portion 74a, and the tip of the male screw portion 92b. A plug portion 92c is formed that is movable between a position for closing the space between the portion and the oil drain pipe 8 and a position for releasing the space. A seal tape is wound around the male screw portion 92b so that the oil 2 does not leak out of the adjustment hole 74 through a gap between the female screw portion 74a and the male screw portion 92b. The plug portion 92c is formed with a tapered portion 92d whose diameter is reduced toward the tip so as not to obstruct the flow of the oil 2 to the oil drain pipe 8 extremely.

このように構成された油量調節ねじ９は、排油管８の直前で排油管８における油２の流域を調節することができるようになっている。
また、油量調節ねじ９は、挿入部９２を最も深い位置まで挿入させた際であっても、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れないようになっている。すなわち、排油管８を流れる油２の流量が最小値となるまで排油管８の断面を絞り込んだ際に給油管６１，６２内の圧力が、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの圧力値以上にならない位置までしか油量調節ねじ９を挿入できないようになっている。 The oil amount adjusting screw 9 configured as described above can adjust the flow area of the oil 2 in the drainage pipe 8 immediately before the drainage pipe 8.
Even when the insertion portion 92 is inserted to the deepest position, the oil amount adjusting screw 9 has a joint between the oil supply pipes 61 and 62 and the branch member 7, a joint between the oil supply pipe 62 and the hook 1, and a hook. The oil 2 is prevented from leaking from the seal portion 1. That is, when the cross-section of the oil drain pipe 8 is narrowed down until the flow rate of the oil 2 flowing through the oil drain pipe 8 reaches a minimum value, the pressure in the oil supply pipes 61 and 62 becomes the seam between the oil supply pipes 61 and 62 and the branch member 7. The oil amount adjusting screw 9 can be inserted only to the joint where the oil supply pipe 62 and the hook 1 are connected, and to a position where the pressure does not exceed the pressure value when the oil 2 starts to leak from the seal portion of the hook 1.

＜実施形態１の作用効果＞
以上のように、実施形態１におけるミシンの釜給油機構１００によれば、プランジャポンプ４を起動させると、プランジャポンプ４は吸引口４１からオイルタンク３に貯溜された油２を吸引し、吐出口４２から給油管６１に吐出する。吐出口４２から吐出された油２は、給油管６１内を通り、やがて分岐部材７の取込孔７１から分岐部材７の内部に取り込まれ、油２の一部は戻し孔７２を通って給油管６２に排出され、残りの油２は排出孔７３に導かれる。排出孔７３の手前には調節孔７４が形成され、この調節孔７４内を移動する油量調節ねじ９が設けられており、排出孔７３に導かれる油２の流量が調節される。 <Effect of Embodiment 1>
As described above, according to the hook oil supply mechanism 100 for the sewing machine according to the first embodiment, when the plunger pump 4 is activated, the plunger pump 4 sucks the oil 2 stored in the oil tank 3 from the suction port 41 and discharges the discharge port. 42 is discharged into the oil supply pipe 61. The oil 2 discharged from the discharge port 42 passes through the oil supply pipe 61, and is eventually taken into the branch member 7 from the intake hole 71 of the branch member 7, and a part of the oil 2 passes through the return hole 72 to supply oil. The oil 2 is discharged to the pipe 62 and the remaining oil 2 is guided to the discharge hole 73. An adjustment hole 74 is formed in front of the discharge hole 73, and an oil amount adjustment screw 9 that moves in the adjustment hole 74 is provided to adjust the flow rate of the oil 2 guided to the discharge hole 73.

ここで、油量調節ねじ９は、排油管８を流れる油２の流量が最小値となるまで調節した場合であっても、給油管６１，６２内の圧力が給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの圧力値未満に抑えられ、当該圧力値以上にならないため、給油管６１，６２を最も絞った状態であってもこれらの継ぎ目（例えば、接続部材６２ａ，７６等）やシール部分（例えば、オイルシール１ｃ）から油が漏れることがない。逆に言えば、油量調節ねじ９を、排油管８を流れる油２の流量が最小値となるまで調節した場合に釜１に十分な油が供給されていない場合には、フィルタ１０の汚れによる釜１への給油不足であると判断できるため、釜１や給油管６１，６２を分解してフィルタ１０の汚れを確認しなくても、フィルタ１０の交換時期であることがわかる。
よって、フィルタ１０の交換時期を的確に知ることができ、釜１のメンテナンスを容易に行うことができる。 Here, even when the oil amount adjusting screw 9 is adjusted until the flow rate of the oil 2 flowing through the drain oil pipe 8 becomes the minimum value, the pressure in the oil supply pipes 61 and 62 is changed between the oil supply pipes 61 and 62 and the branching member. 7, the oil supply pipe 62 and the hook 1, and the pressure at which the oil 2 starts to leak from the seal portion of the hook 1 is suppressed to less than the pressure value and does not exceed the pressure value. Even in the squeezed state, oil does not leak from these joints (for example, the connecting members 62a and 76) and the seal portion (for example, the oil seal 1c). In other words, when the oil amount adjusting screw 9 is adjusted until the flow rate of the oil 2 flowing through the oil drain pipe 8 becomes the minimum value, if the oil is not supplied to the hook 1, the filter 10 becomes dirty. Therefore, it can be determined that it is time to replace the filter 10 without disassembling the hook 1 or the oil supply pipes 61 and 62 and checking the filter 10 for contamination.
Therefore, the replacement time of the filter 10 can be accurately known, and the maintenance of the hook 1 can be easily performed.

また、油量調節ねじ９の頭部９１が調節孔７４に挿入することができないため、頭部９１はストッパとして機能し、排油管８の油２の流量が給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの流量値以下になることを規制するため、排油管８は完全に閉塞されることがなく、給油管６１，６２内の圧力が過剰に上昇することを防止できる。これにより、これらの継ぎ目やシール部分から油が漏れることがない。よって、フィルタ１０の交換時期を的確に知ることができ、釜１のメンテナンスを容易に行うことができる。 Further, since the head portion 91 of the oil amount adjusting screw 9 cannot be inserted into the adjusting hole 74, the head portion 91 functions as a stopper, and the flow rate of the oil 2 in the oil discharge pipe 8 is changed between the oil supply pipes 61 and 62 and the branch member 7. And the oil supply pipe 62 and the hook 1 and the flow rate when oil 2 starts to leak from the seal portion of the hook 1 is restricted. The pressure in the oil supply pipes 61 and 62 can be prevented from rising excessively. Thereby, oil does not leak from these joints or seal portions. Therefore, the replacement time of the filter 10 can be accurately known, and the maintenance of the hook 1 can be easily performed.

また、油量調節ねじ９は、排油管８に出没して排油管８における油２の流域を調節するものであるため、使用される油２の粘性に応じて油２の流域を調節することにより、あらゆる油に対応させることができる。 Moreover, since the oil amount adjusting screw 9 adjusts the flow area of the oil 2 in and out of the oil discharge pipe 8 and adjusts the flow area of the oil 2 according to the viscosity of the oil 2 to be used. Therefore, any oil can be used.

〔実施形態２〕
＜ミシンの釜給油機構の構成＞
実施形態２におけるミシンの釜給油機構の構成について説明する。
図３に示すように、釜給油機構２００が実施形態１の釜給油機構１００と異なる点は、油量調節ねじ９に替えて油量調節ねじ１１を用いた点であるため、油量調節ねじ１１について説明し、他の構成部品には同一符号を付して説明を省略する。
油量調節ねじ１１には、軸部１１ａと、軸部１１ａの先端に形成され、雌ねじ部７４ａに螺合する雄ねじ部１１ｂと、雄ねじ部１１ｂの先端に形成され、取込孔７１と戻し孔７２の合流部７ａと排油管８の間の空間を閉塞する位置と解放する位置とに移動可能な栓部１１ｃが形成されている。 [Embodiment 2]
<Configuration of sewing machine oil supply mechanism>
The configuration of the sewing machine hook oil supply mechanism according to the second embodiment will be described.
As shown in FIG. 3, the difference between the hook oil supply mechanism 200 and the oil supply mechanism 100 according to the first embodiment is that an oil amount adjusting screw 11 is used instead of the oil amount adjusting screw 9. 11 will be described, and the other components will be denoted by the same reference numerals and description thereof will be omitted.
The oil amount adjusting screw 11 has a shaft portion 11a, a male screw portion 11b formed at the tip of the shaft portion 11a and screwed into the female screw portion 74a, and formed at the tip of the male screw portion 11b, and an intake hole 71 and a return hole. A plug portion 11c is formed that is movable between a position for closing the space between the joining portion 7a of 72 and the oil drain pipe 8 and a position for releasing the space.

軸部１１ａの上面には、ドライバーと係合させるための係合溝１１ｆが形成されている。軸部１１ａの上端部外周には、Ｅリング１２が取り付けられている。Ｅリング１２は、調節孔７４の直径よりも大きくなるように形成されており、油量調節ねじ１１を調節孔７４に過剰に挿入しようとしてもＥリング１２がストッパとなって挿入が規制されるようになっている。すなわち、Ｅリング１２は、排油管８の油２の流量が給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの流量値以下になることを規制する規制手段として機能する。
雄ねじ部１１ｂには、シールテープが巻回されており、雌ねじ部７４ａと雄ねじ部１１ｂとの隙間から油２が調節孔７４の外に漏れないようになっている。栓部１１ｃには、先端に向かうにつれて断面が縮径されるようなテーパ部１１ｇが形成されており、排油管８への油２の流れを極度に阻害しないようになっている。 An engaging groove 11f for engaging with a driver is formed on the upper surface of the shaft portion 11a. An E-ring 12 is attached to the outer periphery of the upper end portion of the shaft portion 11a. The E-ring 12 is formed so as to be larger than the diameter of the adjustment hole 74, and even if the oil amount adjustment screw 11 is excessively inserted into the adjustment hole 74, the insertion is restricted by the E-ring 12 serving as a stopper. It is like that. That is, in the E-ring 12, the flow rate of the oil 2 in the oil discharge pipe 8 starts to leak from the joint between the oil supply pipes 61 and 62 and the branch member 7, the joint between the oil supply pipe 62 and the hook 1, and the seal portion of the hook 1. It functions as a restricting means that restricts the flow rate from being less than the current flow rate value.
A seal tape is wound around the male screw portion 11 b so that the oil 2 does not leak out of the adjustment hole 74 through a gap between the female screw portion 74 a and the male screw portion 11 b. The plug portion 11c is formed with a taper portion 11g whose diameter is reduced toward the tip so as not to obstruct the flow of the oil 2 to the oil drain pipe 8 extremely.

このように構成された油量調節ねじ１１は、排油管８の直前で排油管８における油２の流域を調節することができるようになっている。
また、油量調節ねじ１１は、最も深い位置まで挿入させた際であっても、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れないようになっている。すなわち、排油管８を流れる油２の流量が最小値となるまで排油管８の断面を絞り込んだ際に給油管６１，６２内の圧力が、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの圧力値未満となる位置までしか油量調節ねじ１１を挿入できないようになっている。従って、給油管６１，６２内の圧力が上記油２が漏れ始める圧力値以上になることが抑えられ、当該給油機構における油漏れが低減される。 The oil amount adjusting screw 11 configured as described above can adjust the flow area of the oil 2 in the drainage pipe 8 immediately before the drainage pipe 8.
Further, even when the oil amount adjusting screw 11 is inserted to the deepest position, the joint between the oil supply pipes 61 and 62 and the branch member 7, the joint between the oil supply pipe 62 and the hook 1, and the seal portion of the hook 1 So that oil 2 does not leak. That is, when the cross-section of the oil drain pipe 8 is narrowed down until the flow rate of the oil 2 flowing through the oil drain pipe 8 reaches a minimum value, the pressure in the oil supply pipes 61, 62 is The oil amount adjusting screw 11 can be inserted only to the position where the oil 2 starts to leak from the joint between the oil supply pipe 62 and the hook 1 and the seal portion of the hook 1 when the oil 2 starts to leak. Accordingly, it is possible to suppress the pressure in the oil supply pipes 61 and 62 from being equal to or higher than the pressure value at which the oil 2 starts to leak, and oil leakage in the oil supply mechanism is reduced.

＜実施形態２の作用効果＞
以上のように、実施形態２におけるミシンの釜給油機構２００によれば、実施形態１と同様の作用効果を奏するほか、棒状の油量調節ねじ１１にＥリング１２を設けるだけで実施形態１における油量調節ねじ９と同様の効果を奏するため、よりコストを低減させることができる。なお、Ｅリング１２に替えてＣリングを用いてもよい。 <Effects of Second Embodiment>
As described above, according to the hook oil supply mechanism 200 for the sewing machine in the second embodiment, the same effect as that in the first embodiment can be obtained, and only the E-ring 12 is provided on the rod-like oil amount adjusting screw 11 in the first embodiment. Since the same effect as the oil amount adjusting screw 9 is produced, the cost can be further reduced. A C ring may be used instead of the E ring 12.

〔実施形態３〕
＜ミシンの釜給油機構の構成＞
実施形態３におけるミシンの釜給油機構の構成について説明する。
図４に示すように、釜給油機構３００が実施形態１の釜給油機構１００と異なる点は、油量調節ねじ９に替えて油量調節ねじ１４を用いた点であるため、油量調節ねじ１４について説明し、他の構成部品には同一符号を付して説明を省略する。
油量調節ねじ１４には、軸部１４ａと、軸部１４ａの先端に形成され、雌ねじ部７４ａに螺合する雄ねじ部１４ｂと、雄ねじ部１４ｂの先端に形成され、取込孔７１と戻し孔７２の合流部７ａと排油管８の間の空間を閉塞する位置と解放する位置とに移動可能な栓部１４ｃと、栓部１４ｃの先端に形成された閉塞部１４ｄとが形成されている。 [Embodiment 3]
<Configuration of sewing machine oil supply mechanism>
The structure of the hook oil supply mechanism of the sewing machine in the third embodiment will be described.
As shown in FIG. 4, the difference between the hook oil supply mechanism 300 and the oil supply mechanism 100 according to the first embodiment is that an oil quantity adjusting screw 14 is used instead of the oil quantity adjusting screw 9. 14 will be described, and the other components will be denoted by the same reference numerals and description thereof will be omitted.
The oil amount adjusting screw 14 has a shaft portion 14a, a male screw portion 14b formed at the tip of the shaft portion 14a and screwed into the female screw portion 74a, and formed at the tip of the male screw portion 14b. The intake hole 71 and the return hole The plug part 14c which can move to the position which block | closes the space | interval between the 72 junction part 7a and the oil drain pipe 8, and the position to open | release, and the obstruction | occlusion part 14d formed in the front-end | tip of the plug part 14c are formed.

軸部１４ａの上面には、ドライバーと係合させるための係合溝１４ｆが形成されている。雄ねじ部１４ｂには、シールテープが巻回されており、雌ねじ部７４ａと雄ねじ部１４ｂとの隙間から油２が調節孔７４の外に漏れないようになっている。栓部１４ｃには、先端に向かうにつれて断面が縮径されるようなテーパ部１４ｇが形成されており、排油管８への油２の流れを極度に阻害しないようになっている。閉塞部１４ｄは、栓部１４ｃの先端の径よりもさらに縮径されており、取込孔７１と排出孔７３との合流部に突出させた際に、閉塞部１４ｄと合流部７ａの壁面との間に油２が通過できる隙間７ｄが形成されるようになっている。すなわち、この隙間７ｄが通過部として機能する。 On the upper surface of the shaft portion 14a, an engagement groove 14f for engaging with a driver is formed. A seal tape is wound around the male screw portion 14 b so that the oil 2 does not leak out of the adjustment hole 74 through a gap between the female screw portion 74 a and the male screw portion 14 b. The plug portion 14c is formed with a tapered portion 14g whose diameter is reduced toward the tip, so that the flow of the oil 2 to the oil drain pipe 8 is not extremely hindered. The blocking part 14d is further reduced in diameter than the diameter of the tip of the plug part 14c, and when the blocking part 14d protrudes to the joining part of the intake hole 71 and the discharge hole 73, the blocking part 14d and the wall surface of the joining part 7a A gap 7d through which the oil 2 can pass is formed. That is, the gap 7d functions as a passing portion.

このように構成された油量調節ねじ１４は、排油管８の直前で排油管８における油２の流域を調節することができるようになっている。
また、油量調節ねじ１４は、閉塞部１４ｄが油２の流れる経路を完全に遮蔽した場合であっても、合流部７ａの壁面との間には隙間７ｄができるため、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れないようになっている。 The oil amount adjusting screw 14 configured in this way can adjust the flow area of the oil 2 in the drainage pipe 8 immediately before the drainage pipe 8.
Further, the oil amount adjusting screw 14 has a gap 7d with the wall surface of the merging portion 7a even when the blocking portion 14d completely shields the path through which the oil 2 flows. The oil 2 is prevented from leaking from the joint between the branch member 7 and the joint between the oil supply pipe 62 and the hook 1 and the seal portion of the hook 1.

＜実施形態３の作用効果＞
以上のように、実施形態３におけるミシンの釜給油機構３００によれば、実施形態１と同様の作用効果を奏するほか、油量調節ねじ１４は、閉塞部１４ｄを排油経路に最も突出させた場合であっても、合流部７ａの壁面との間に形成された隙間７ｄにより油２を通過させることができるので、作業者は閉塞部１４ｄを限界まで排油経路に突出させるだけでよく、排油経路に油が流れるように油量調節ねじ１４の突出量の調節作業が不要となる。 <Effect of Embodiment 3>
As described above, according to the hook oil supply mechanism 300 for the sewing machine in the third embodiment, the same effect as that in the first embodiment is obtained, and the oil amount adjusting screw 14 protrudes the closing portion 14d most into the oil discharge path. Even in this case, the oil 2 can be passed through the gap 7d formed between the wall surface of the merging portion 7a, so that the operator only has to project the closing portion 14d to the oil drainage path to the limit. The adjustment work of the protruding amount of the oil amount adjusting screw 14 is not required so that the oil flows through the oil drainage path.

〔実施形態４〕
＜ミシンの釜給油機構の構成＞
実施形態４におけるミシンの釜給油機構の構成について説明する。
図５に示すように、釜給油機構４００が実施形態３の釜給油機構３００と異なる点は、油量調節ねじ１４に替えて油量調節ねじ１５を用いた点であるため、油量調節ねじ１５について説明し、他の構成部品には同一符号を付して説明を省略する。
油量調節ねじ１５には、軸部１５ａと、軸部１５ａの先端に形成され、雌ねじ部７４ａに螺合する雄ねじ部１５ｂと、雄ねじ部１５ｂの先端に形成され、取込孔７１と戻し孔７２の合流部７ａと排油管８の間の空間を閉塞する位置と解放する位置とに移動可能な栓部１５ｃとが形成されている。 [Embodiment 4]
<Configuration of sewing machine oil supply mechanism>
The configuration of the sewing machine hook oil supply mechanism in the fourth embodiment will be described.
As shown in FIG. 5, the difference between the hook oil supply mechanism 400 and the hook oil supply mechanism 300 of the third embodiment is that an oil amount adjustment screw 15 is used instead of the oil amount adjustment screw 14. 15 will be described, and the other components are denoted by the same reference numerals and description thereof will be omitted.
The oil amount adjusting screw 15 has a shaft portion 15a, a male screw portion 15b formed at the tip of the shaft portion 15a and screwed into the female screw portion 74a, a tip of the male screw portion 15b, and an intake hole 71 and a return hole. A plug portion 15c is formed that is movable between a position for closing the space between the merging portion 7a of 72 and the oil drain pipe 8 and a position for releasing the space.

軸部１５ａの上面には、ドライバーと係合させるための係合溝１５ｆが形成されている。雄ねじ部１５ｂには、シールテープが巻回されており、雌ねじ部７４ａと雄ねじ部１５ｂとの隙間から油２が調節孔７４の外に漏れないようになっている。栓部１５ｃには、先端に向かうにつれて断面が縮径されるようなテーパ部１５ｇが形成されており、排油管８への油２の流れを極度に阻害しないようになっている。栓部１５ｃには、その軸方向に沿って一平面方向に貫通された貫通溝１５ｄが形成されており、栓部１５ｃを取込孔７１と排出孔７３との合流部７ａに突出させた際に、貫通溝１５ｄを油２が通過できるようになっている。すなわち、この貫通溝１５ｄが通過部として機能する。 An engagement groove 15f for engaging with the driver is formed on the upper surface of the shaft portion 15a. A seal tape is wound around the male screw portion 15 b so that the oil 2 does not leak out of the adjustment hole 74 through a gap between the female screw portion 74 a and the male screw portion 15 b. The plug portion 15c is formed with a tapered portion 15g whose cross section is reduced in diameter toward the tip, so that the flow of the oil 2 to the oil drain pipe 8 is not extremely hindered. The plug portion 15c is formed with a through-groove 15d penetrating in one plane along the axial direction of the plug portion 15c. When the plug portion 15c is projected to the joining portion 7a of the intake hole 71 and the discharge hole 73, In addition, the oil 2 can pass through the through groove 15d. That is, the through groove 15d functions as a passage portion.

このように構成された油量調節ねじ１５は、排油管８の直前で排油管８における油２の流域を調節することができるようになっている。
また、油量調節ねじ１５は、栓部１５ｃが油２の流れる経路を完全に遮蔽する位置まで移動した場合であっても、栓部１５ｃには貫通溝１５ｄが形成されているため、給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れないようになっている。 The oil amount adjusting screw 15 configured as described above can adjust the flow area of the oil 2 in the drainage pipe 8 immediately before the drainage pipe 8.
Further, the oil amount adjusting screw 15 has a through groove 15d formed in the plug portion 15c even when the plug portion 15c has moved to a position where the plug 15c completely blocks the path through which the oil 2 flows. The oil 2 does not leak from the joints 61, 62 and the branch member 7, the joint between the oil supply pipe 62 and the hook 1, and the seal portion of the hook 1.

＜実施形態４の作用効果＞
以上のように、実施形態４におけるミシンの釜給油機構４００によれば、実施形態３と同様の作用効果を奏するほか、油量調節ねじ１５は、栓部１５ｃを排油経路に最も突出させた場合であっても、貫通溝１５ｄにより油２を通過させることができるので、作業者は栓部１５ｃを限界まで合流部７ａに突出させるだけでよく、排油管８に油が流れるように油量調節ねじ１５の突出量の調節作業が不要となる。 <Effect of Embodiment 4>
As described above, according to the sewing machine oil supply mechanism 400 of the sewing machine according to the fourth embodiment, the same effect as that of the third embodiment is obtained, and the oil amount adjusting screw 15 makes the plug portion 15c most protruded into the oil discharge path. Even in this case, since the oil 2 can be passed through the through groove 15d, the operator only has to project the plug portion 15c to the joining portion 7a to the limit, and the amount of oil so that the oil flows into the oil discharge pipe 8. The adjustment work of the protrusion amount of the adjustment screw 15 becomes unnecessary.

〔実施形態５〕
＜ミシンの釜給油機構の構成＞
実施形態５におけるミシンの釜給油機構の構成について説明する。
図６に示すように、釜給油機構５００が実施形態２の釜給油機構２００と異なる点は、油量調節ねじ１１に替えて油量調節ねじ１６を用いた点であるため、油量調節ねじ１６について説明し、他の構成部品には同一符号を付して説明を省略する。
油量調節ねじ１６には、軸部１６ａと、軸部１６ａの先端に形成され、雌ねじ部７４ａに螺合する雄ねじ部１６ｂと、雄ねじ部１６ｂの先端に形成され、取込孔７１と戻し孔７２の合流部７ａと排油管８の間の空間を閉塞する位置と解放する位置とに移動可能な栓部１６ｃが形成されている。 [Embodiment 5]
<Configuration of sewing machine oil supply mechanism>
The configuration of the sewing machine hook oil supply mechanism in the fifth embodiment will be described.
As shown in FIG. 6, the hook oil supply mechanism 500 is different from the oil supply mechanism 200 according to the second embodiment in that an oil quantity adjusting screw 16 is used instead of the oil quantity adjusting screw 11. 16 will be described, and the same reference numerals will be given to the other components and the description thereof will be omitted.
The oil amount adjusting screw 16 has a shaft portion 16a, a male screw portion 16b formed at the tip of the shaft portion 16a and screwed into the female screw portion 74a, and formed at the tip of the male screw portion 16b, and an intake hole 71 and a return hole. A plug portion 16c is formed that is movable between a position for closing the space between the merging portion 7a of 72 and the oil drain pipe 8 and a position for releasing the space.

軸部１６ａの上面には、ドライバーと係合させるための係合溝１６ｆが形成されている。軸部１６ａの上端部近傍の外周面には、ナット１７に螺合する雄ねじ部１６ｄが形成されている。この雄ねじ部１６ｄには、ナット１７が螺合されており、ナット１７を回転させて軸部１６ａにおけるナット１７の位置を可変とすることができ、栓部１６ｃが調節孔７４内において位置を変えることができるようになっている。
ナット１７は、調節孔７４の直径よりも大きくなるように形成されており、油量調節ねじ１６を調節孔７４に過剰に挿入しようとしてもナット１７がストッパとなって挿入が規制されるようになっている。すなわち、ナット１７は、排油管８の油２の流量が給油管６１，６２と分岐部材７との継ぎ目や給油管６２と釜１との継ぎ目、釜１のシール部分から油２が漏れ始めるときの流量値以下になることを規制する規制手段として機能する。
雄ねじ部１６ｂには、シールテープが巻回されており、雌ねじ部７４ａと雄ねじ部１６ｂとの隙間から油２が調節孔７４の外に漏れないようになっている。栓部１６ｃには、先端に向かうにつれて断面が縮径されるようなテーパ部１６ｇが形成されており、排油管８への油２の流れを極度に阻害しないようになっている。 An engaging groove 16f for engaging with the driver is formed on the upper surface of the shaft portion 16a. A male screw portion 16d that is screwed into the nut 17 is formed on the outer peripheral surface in the vicinity of the upper end portion of the shaft portion 16a. A nut 17 is screwed into the male screw portion 16 d, and the position of the nut 17 in the shaft portion 16 a can be changed by rotating the nut 17, and the plug portion 16 c changes the position in the adjustment hole 74. Be able to.
The nut 17 is formed so as to be larger than the diameter of the adjustment hole 74, so that even if the oil amount adjustment screw 16 is excessively inserted into the adjustment hole 74, the nut 17 serves as a stopper to restrict the insertion. It has become. That is, when the flow rate of the oil 2 in the oil discharge pipe 8 is such that the oil 2 begins to leak from the joint between the oil supply pipes 61 and 62 and the branch member 7, the joint between the oil supply pipe 62 and the hook 1, and the seal portion of the hook 1. It functions as a restricting means for restricting the flow rate from being equal to or less than the flow rate value.
A seal tape is wound around the male screw portion 16 b so that the oil 2 does not leak out of the adjustment hole 74 through a gap between the female screw portion 74 a and the male screw portion 16 b. The plug portion 16c is formed with a taper portion 16g whose diameter is reduced toward the tip, so that the flow of the oil 2 to the oil drain pipe 8 is not extremely hindered.

＜実施形態５の作用効果＞
以上のように、実施形態５におけるミシンの釜給油機構５００によれば、実施形態２と同様の作用効果を奏するほか、棒状の油量調節ねじ１６にナット１７を螺合させるだけで実施形態２における油量調節ねじ１１と同様の効果を奏するため、汎用品で容易に実現させることができる。また、実施形態２のＥリング１２と違って、ナット１７を油量調節ねじ１６に取り付けて調節孔７４に挿入した後でも、ナット１７を回転させることにより、その挿入量を自由に変更できるので、使用する油２の粘度に合わせて排油管８に流れ込む油２の油量を変えることができる。 <Effects of Embodiment 5>
As described above, according to the hook oil supply mechanism 500 for the sewing machine in the fifth embodiment, the same effects as in the second embodiment can be obtained, and the second embodiment can be obtained by simply screwing the nut 17 into the rod-like oil amount adjusting screw 16. Since the same effect as the oil amount adjusting screw 11 is obtained, it can be easily realized by a general-purpose product. Further, unlike the E-ring 12 of the second embodiment, even after the nut 17 is attached to the oil amount adjusting screw 16 and inserted into the adjusting hole 74, the amount of insertion can be freely changed by rotating the nut 17. The amount of oil 2 flowing into the drain oil pipe 8 can be changed in accordance with the viscosity of the oil 2 to be used.

〔実施形態６〕
＜ミシンの釜給油機構の構成＞
実施形態６におけるミシンの釜給油機構の構成について説明する。
図７に示すように、釜給油機構６００が実施形態５の釜給油機構５００と異なる点は、移動制限部材としてのストッパ２０を設けた点であるため、ストッパ２０について説明し、他の構成部品には同一符号を付して説明を省略する。
分岐部材７には、排出孔７３にほぼ対向する位置にストッパ２０を挿入するストッパ孔７８が形成されている。ストッパ孔７８は、調節孔７４に連通されており、ストッパ孔７８に挿入されたストッパ２０の先端が調節孔７４に露出するようになっている。また、ストッパ孔７８には、ストッパ２０を螺合させる雌ねじ部７８ａが形成されている。 [Embodiment 6]
<Configuration of sewing machine oil supply mechanism>
The configuration of the sewing machine hook oil supply mechanism in the sixth embodiment will be described.
As shown in FIG. 7, the difference between the hook oil supply mechanism 600 and the hook oil supply mechanism 500 of the fifth embodiment is that a stopper 20 as a movement restricting member is provided. Are denoted by the same reference numerals and description thereof is omitted.
The branch member 7 is formed with a stopper hole 78 into which the stopper 20 is inserted at a position substantially opposite to the discharge hole 73. The stopper hole 78 communicates with the adjustment hole 74 so that the tip of the stopper 20 inserted into the stopper hole 78 is exposed to the adjustment hole 74. Further, the stopper hole 78 is formed with a female threaded portion 78a to which the stopper 20 is screwed.

ストッパ２０の上面には、ドライバーと係合させるための係合溝２０ｆが形成されている。ストッパ２０の基端部の外周面には、ナット２１に螺合する雄ねじ部２０ｄが形成されている。この雄ねじ部２０ｄには、ナット２１が螺合されており、ナット２１を回転させてストッパ２０におけるナット２１の位置を可変とすることができ、先端の調節孔７４への突出量を変えることができるようになっている。
ナット２１は、ストッパ孔７８の直径よりも大きくなるように形成されており、ストッパ２０をストッパ孔７８に過剰に挿入しようとしてもナット２１が挿入を規制するようになっている。
雄ねじ部２０ｄには、シールテープが巻回されており、ストッパ孔７８と雄ねじ部２０ｄとの隙間から油２がストッパ孔７８の外に漏れないようになっている。 On the upper surface of the stopper 20, an engagement groove 20f for engaging with a driver is formed. On the outer peripheral surface of the base end portion of the stopper 20, a male screw portion 20d that is screwed into the nut 21 is formed. A nut 21 is screwed into the male screw portion 20d, and the nut 21 can be rotated to change the position of the nut 21 in the stopper 20, and the amount of protrusion of the tip into the adjustment hole 74 can be changed. It can be done.
The nut 21 is formed to be larger than the diameter of the stopper hole 78, and the nut 21 restricts insertion even if the stopper 20 is excessively inserted into the stopper hole 78.
A seal tape is wound around the male screw portion 20 d so that the oil 2 does not leak out of the stopper hole 78 through a gap between the stopper hole 78 and the male screw portion 20 d.

＜実施形態６の作用効果＞
以上のように、実施形態６におけるミシンの釜給油機構６００によれば、実施形態５と同様の作用効果を奏するほか、ストッパ孔７８からストッパ２０を挿入し、ストッパ２０の先端を、油量調節ねじ１６における栓部１６ｃのテーパ部１６ｇの移動経路上に突出させると、ストッパ２０にテーパ部１６ｇが接触するため、油量調節ねじ１６の下方への移動が規制される。これにより、油量調節ねじ１６を移動できるところまで移動させるだけで、油量調節ねじ１６は排油管８内に必要な流量を確保できるだけの隙間を空けた状態で停止するため、油量調節ねじ１６の突出量の調節作業が不要となる。 <Effect of Embodiment 6>
As described above, according to the hook oil supply mechanism 600 for the sewing machine according to the sixth embodiment, the same effect as that of the fifth embodiment is obtained, and the stopper 20 is inserted from the stopper hole 78 and the tip of the stopper 20 is adjusted to adjust the oil amount. When the screw 16 protrudes on the moving path of the tapered portion 16g of the plug portion 16c, the tapered portion 16g comes into contact with the stopper 20, so that the downward movement of the oil amount adjusting screw 16 is restricted. As a result, the oil amount adjusting screw 16 is moved to a position where the oil amount adjusting screw 16 can be moved, and the oil amount adjusting screw 16 stops in a state where a sufficient amount of flow is ensured in the oil drain pipe 8. The adjustment work of 16 protrusion amount becomes unnecessary.

〔実施形態７〕
＜ミシンの釜給油機構の構成＞
実施形態７におけるミシンの釜給油機構の構成について説明する。
図８に示すように、釜給油機構７００が上述した他の実施形態の釜給油機構と異なる点は、給油管６２内にフィルタ３０を設けた点であるため、給油管６２及びフィルタ３０について説明し、他の構成部品には同一符号を付して説明を省略する。
給油管６２の一部には、内部を視認可能な透明部材６２ｃが設けられている。透明部材６２ｃとしては、例えば、アクリル管のように無色透明な材料である。そして、この透明部材６２ｃの内部には、フィルタ３０が設けられている。 [Embodiment 7]
<Configuration of sewing machine oil supply mechanism>
The configuration of the hook oil supply mechanism for the sewing machine in the seventh embodiment will be described.
As shown in FIG. 8, the hook oil supply mechanism 700 is different from the oil supply mechanism of the other embodiments described above in that the filter 30 is provided in the oil supply pipe 62, and therefore the oil supply pipe 62 and the filter 30 will be described. The other components are denoted by the same reference numerals and the description thereof is omitted.
A part of the oil supply pipe 62 is provided with a transparent member 62c that can visually recognize the inside. The transparent member 62c is a colorless and transparent material such as an acrylic tube. The filter 30 is provided inside the transparent member 62c.

＜実施形態７の作用効果＞
以上のように、実施形態７におけるミシンの釜給油機構７００によれば、釜１の機構よりも給油管６２の方が分解、組立が簡単であるため、フィルタ３０が釜１の内部に設けられていた場合に比べてフィルタ３０の交換作業を容易に行うことができる。
また、給油管６２は、フィルタ３０を外部から視認可能であるため、フィルタ３０の汚れを点検するために釜１や給油管６２を分解する必要がなくなる。よって、フィルタ３０を的確な時期に交換することができ、無駄な点検作業を無くすことができる。 <Effects of Embodiment 7>
As described above, according to the shuttle hook oil supply mechanism 700 of the seventh embodiment, the oil supply pipe 62 is easier to disassemble and assemble than the hook 1 mechanism, so that the filter 30 is provided inside the hook 1. Compared with the case where it was, the replacement | exchange operation | work of the filter 30 can be performed easily.
Further, since the oil supply pipe 62 allows the filter 30 to be visually recognized from the outside, it is not necessary to disassemble the hook 1 or the oil supply pipe 62 in order to inspect the filter 30 for dirt. Therefore, the filter 30 can be replaced at an appropriate time, and unnecessary inspection work can be eliminated.

なお、本発明は、上記実施形態に限定されるものではない。例えば、油量調節ねじの調節孔への挿入量を雌ネジ部によって調節してもよい。すなわち、油量調節ねじを挿入させたい位置に対応する場所まで雌ネジ部を形成しておけば、油量調節ねじはそれ以上進入しないので、頭部、Ｅリング、ナットをストッパとして用いる必要がなくなり、部品点数を減らすことができる。また、給油管の配置、油量調節ねじの構造は任意であって、本発明の目的を果たすものであれば、その配置や構造は問わない。 The present invention is not limited to the above embodiment. For example, the insertion amount of the oil amount adjusting screw into the adjusting hole may be adjusted by the female screw portion. In other words, if the female screw part is formed up to the position corresponding to the position where the oil amount adjusting screw is to be inserted, the oil amount adjusting screw will not enter further, so it is necessary to use the head, E-ring, and nut as a stopper. The number of parts can be reduced. Further, the arrangement of the oil supply pipe and the structure of the oil amount adjusting screw are arbitrary, and any arrangement or structure may be used as long as the object of the present invention is achieved.

釜給油機構の概略断面図である。It is a schematic sectional drawing of a hook oil supply mechanism. 実施形態１における釜給油機構の一部を拡大した概略断面図である。FIG. 3 is a schematic cross-sectional view in which a portion of the hook oil supply mechanism in Embodiment 1 is enlarged. 実施形態２における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing to which a part of the hook oil supply mechanism in Embodiment 2 was expanded. 実施形態３における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing to which a part of the hook oil supply mechanism in Embodiment 3 was expanded. 実施形態４における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing to which a part of the hook oil supply mechanism in Embodiment 4 was expanded. 実施形態５における釜給油機構の一部を拡大した概略断面図である。FIG. 10 is an enlarged schematic cross-sectional view of a part of a hook oil supply mechanism in a fifth embodiment. 実施形態６における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing to which a part of the hook oil supply mechanism in Embodiment 6 was expanded. 実施形態７における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing to which a part of the hook oil supply mechanism in Embodiment 7 was expanded. 従来技術における釜給油機構の概略断面図である。It is a schematic sectional drawing of the hook oil supply mechanism in a prior art. 従来技術における他の例の釜給油機構の概略断面図である。It is a schematic sectional drawing of the hook oil supply mechanism of the other example in a prior art. 従来技術における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing which expanded a part of the hook oil supply mechanism in a prior art. 従来技術における釜給油機構の一部を拡大した概略断面図である。It is the schematic sectional drawing which expanded a part of the hook oil supply mechanism in a prior art.

Explanation of symbols

１釜
２油
３オイルタンク（油貯溜手段）
４プランジャポンプ（油供給手段）
７ｄ隙間（通過部）
８排油管（排油経路）
９油量調節ねじ（排油流量調節手段）
１０フィルタ
１１油量調節ねじ（排油流量調節手段）
１１ｇテーパ部
１２Ｅリング（規制手段）
１４油量調節ねじ（排油流量調節手段）
１４ｄ（閉塞部）
１４ｇテーパ部
１５油量調節ねじ（排油流量調節手段）
１５ｄ貫通溝（通過部）
１５ｇテーパ部
１６油量調節ねじ（排油流量調節手段）
１６ｇテーパ部
１７ナット（規制手段）
２０ストッパ（移動制限部材）
３０フィルタ
６１給油管（油供給経路）
６２給油管（油供給経路）
９１頭部（規制手段）
９２ｄテーパ部 1 Pot 2 Oil 3 Oil tank (Oil storage means)
4 Plunger pump (oil supply means)
7d Clearance (passage)
8 Oil drain pipe (oil drain route)
9 Oil level adjusting screw (Oil drainage flow rate adjusting means)
10 Filter 11 Oil level adjusting screw (Oil drainage flow rate adjusting means)
11g Taper 12 E-ring (Regulator)
14 Oil level adjusting screw (Oil drainage flow rate adjusting means)
14d (blocking part)
14g Taper 15 Oil level adjusting screw (Oil drainage flow rate adjusting means)
15d Through groove (passing part)
15g Taper 16 Oil level adjusting screw (Oil drainage flow rate adjusting means)
16g Taper part 17 Nut (Regulator)
20 Stopper (movement restriction member)
30 Filter 61 Oil supply pipe (oil supply path)
62 Oil supply pipe (oil supply route)
91 head (regulation means)
92d taper

Claims

Oil storage means for storing oil to be supplied to the sewing machine hook, oil supply means for supplying oil stored in the oil storage means to the hook, and an oil supply path for connecting the hook and the oil supply means The oil supply path branched off in the middle of the oil supply path, connected to the oil storage means, the drain oil flow rate adjusting means for adjusting the flow rate of oil flowing through the drain oil path, and the oil supplied to the hook A sewing machine oiling mechanism comprising a filter for filtering
Restricting means for restricting the pressure in the oil supply flow path from being equal to or higher than a predetermined pressure value when the oil flow rate adjusting means adjusts until the flow rate of the oil flowing through the oil discharge path reaches a minimum value. A sewing machine oil supply mechanism characterized by being provided.

The regulating means is
2. The sewing machine oil supply mechanism for a sewing machine according to claim 1, wherein a flow rate of the oil in the drainage path adjusted by the drainage flow rate adjusting means is regulated to be a predetermined flow rate value or less.

The waste oil flow rate adjusting means is
3. The hook oil supply mechanism for a sewing machine according to claim 1, wherein an oil flow area in the oil discharge path is adjusted by moving in and out of the oil discharge path.

The drainage flow rate adjusting means has a blocking portion that blocks the inside of the drainage path when the drainage path is most protruded in the drainage path,
4. The sewing machine oil supply mechanism for a sewing machine according to claim 3, wherein a passage portion for allowing oil to pass through is formed in the closed portion.

The drainage flow rate adjusting means has a tapered portion formed so that the cross section becomes smaller toward the tip,
4. The sewing machine oil supply mechanism for a sewing machine according to claim 3, wherein a movement restricting member that protrudes and protrudes from a direction intersecting a moving direction of the tapered portion is provided on a moving path of the tapered portion.

The oil supply path is tubular,
The sewing machine hook oil supply mechanism according to any one of claims 1 to 5, wherein the filter is provided in the oil supply path.

The sewing machine hook oil supply mechanism according to claim 6, wherein at least a part of the oil supply path is configured such that the filter is visible from the outside.