JP2017192573A - Thread tension device of sewing machine - Google Patents

Thread tension device of sewing machine Download PDF

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JP2017192573A
JP2017192573A JP2016084875A JP2016084875A JP2017192573A JP 2017192573 A JP2017192573 A JP 2017192573A JP 2016084875 A JP2016084875 A JP 2016084875A JP 2016084875 A JP2016084875 A JP 2016084875A JP 2017192573 A JP2017192573 A JP 2017192573A
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thread tension
shaft
presser
dish
thread
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今井　力
Tsutomu Imai
力 今井
隆 日塔
Takashi Hito
隆 日塔
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Juki Corp
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Juki Corp
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Priority to JP2016084875A priority Critical patent/JP2017192573A/en
Priority to KR1020170051153A priority patent/KR20170120520A/en
Priority to DE102017108479.7A priority patent/DE102017108479A1/en
Priority to CN201710266303.1A priority patent/CN107304500A/en
Publication of JP2017192573A publication Critical patent/JP2017192573A/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D05B47/04—Automatically-controlled tensioning devices

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  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the vibration of thread tension disks during the high-speed rotation of a sewing machine, thereby solving the problem of the loosening of thread tension.SOLUTION: A thread tension device includes: a pair of thread tension disks for holding a sewing machine thread; and a driving device for pressing one of the pair of thread tension disks 1 and 2 against the other thereof, thereby making tension applied to the thread variable. In the thread tension device, disk pressers 11 and 12 are disposed on the outsides of the pair of thread tension disks 1 and 2, respectively. On the first disk presser 11 disposed on the outside of the one thread tension disk 1, there are provided projections 11a which are in contact with the outside surface of the one thread tension disk 1 at three points at equal intervals in a circumference direction. An elastic member 13 is disposed between the other thread tension disk 2 and the second disk presser 12 disposed on the outside thereof.SELECTED DRAWING: Figure 6

Description

本発明は、ミシンの糸に張力を付与する糸調子装置に関する。   The present invention relates to a thread tension device that applies tension to a thread of a sewing machine.

ミシンの糸を挟持する一対の糸調子皿と、その一対の糸調子皿の一方を他方に押し付けて糸に付与する張力を可変とする駆動装置（電磁ソレノイド）とを備える糸調子装置は公知である（特許文献１参照）。   A thread tension device is known that includes a pair of thread tension plates that clamp a thread of a sewing machine and a drive device (electromagnetic solenoid) that varies the tension applied to the yarn by pressing one of the pair of thread tension plates against the other. Yes (see Patent Document 1).

特許第３８３６３６２号公報Japanese Patent No. 3836362

しかし、従来の糸調子装置は、ミシンの高速回転時において、ミシンフレームの振動が伝わって糸調子皿が振動し、糸張力が緩む問題があった。   However, the conventional thread tension device has a problem that when the sewing machine rotates at high speed, the vibration of the sewing machine frame is transmitted, the thread tension tray vibrates, and the thread tension is loosened.

本発明の課題は、ミシンの高速回転時における糸調子皿の振動を防止して糸張力が緩む問題を解消することである。   An object of the present invention is to solve the problem that the thread tension is loosened by preventing the thread tension plate from vibrating during high-speed rotation of the sewing machine.

以上の課題を解決するため、請求項１に記載の発明は、
中心部に軸孔を有し、ミシンの糸を挟持する一対の糸調子皿と、その一対の糸調子皿の一方を他方に押し付けて糸に付与する張力を可変とする駆動装置とを備える糸調子装置において、
前記一対の糸調子皿の外側には中心部に軸孔を有する第一皿押さえと第二皿押さえをそれぞれ配置し、
前記一方の糸調子皿の外側に配置した前記第一皿押さえに、前記一方の糸調子皿の外側面に対し円周方向等間隔に三点で当接する突起を設けて、
前記他方の糸調子皿とその外側に配置した前記第二皿押さえとの間に弾性部材を配置したことを特徴とする。 In order to solve the above problems, the invention described in claim 1
Yarn provided with a pair of thread tension plates having a shaft hole at the center and holding a thread of the sewing machine, and a drive device for changing the tension applied to the yarn by pressing one of the pair of thread tension plates against the other In the tone device,
A first dish presser and a second dish presser each having a shaft hole at the center thereof are arranged on the outside of the pair of thread tension plates,
Providing the first dish presser disposed on the outside of the one thread tension tray with protrusions that come in contact with the outer surface of the one thread tension tray at three equal intervals in the circumferential direction,
An elastic member is disposed between the other thread tension plate and the second plate presser disposed outside thereof.

また、請求項２に記載の発明は、
請求項１に記載のミシンの糸調子装置であって、
一端側から他端側にかけて軸心に挿通穴を設け、他端側に軸心に沿って直径方向に貫通するスリットを有し、前記スリットは前記挿通穴と連通し、前記一対の糸調子皿及び前記第一皿押さえと第二皿押さえを軸心に沿って移動可能に支持する糸調子軸と、
前記糸調子軸の前記挿通穴に前記軸心に沿って移動可能に挿入された押圧軸と、を備え、
前記第一皿押さえの軸孔は中央リブによって一対の孔部に区切られ、
前記駆動機構の駆動によって前記押圧軸を前記第一皿押さえの中央リブに当接させ、前記一方の糸調子皿を前記他方の糸調子皿に向けて押し付けることを特徴とする。 The invention according to claim 2
The thread tension device for a sewing machine according to claim 1,
An insertion hole is provided in the shaft center from one end side to the other end side, and there is a slit penetrating in the diametrical direction along the shaft center on the other end side. The slit communicates with the insertion hole, and the pair of thread tension plates And a thread tension shaft that supports the first plate presser and the second plate presser so as to be movable along the axis,
A pressing shaft movably inserted along the axis in the insertion hole of the thread tension shaft,
The shaft hole of the first dish presser is divided into a pair of holes by a central rib,
By driving the drive mechanism, the pressing shaft is brought into contact with a central rib of the first dish presser, and the one thread tension dish is pressed against the other thread tension dish.

また、請求項３に記載の発明は、
請求項２に記載のミシンの糸調子装置であって、
前記糸調子軸の前記一端側に組み付けられた糸調子台と、
前記糸調子軸の前記他端側に組み付けられ、前記一対の糸調子皿の移動を規制する保護カバーと、を備え、
前記第一皿押さえは、前記一方の糸調子皿と前記糸調子台の間に配置され、
前記第二皿押さえは、前記他方の糸調子皿と前記保護カバーの間に配置されることを特徴とする。 The invention according to claim 3
The thread tension device for a sewing machine according to claim 2,
A thread tension base assembled to the one end side of the thread tension shaft;
A protective cover that is assembled to the other end of the thread tension shaft and restricts the movement of the pair of thread tension dishes;
The first dish presser is disposed between the one thread tension plate and the thread tension table,
The second dish presser is disposed between the other thread tension dish and the protective cover.

本発明によれば、ミシンの高速回転時における糸調子皿の振動を防止して糸張力が緩む問題を解消することができる。   According to the present invention, it is possible to solve the problem that the thread tension is loosened by preventing the thread tension plate from vibrating when the sewing machine rotates at a high speed.

本発明を適用した糸調子装置の一実施形態の外観を示す側面図である。It is a side view which shows the external appearance of one Embodiment of the thread tension device to which this invention is applied. 図１の糸調子装置の左側のケース内を透視状態で示した図である。It is the figure which showed the inside of the case of the left side of the thread tension device of FIG. 図１の糸調子装置の右側の糸調子皿を取り除いて弾性部材を示した斜視図である。FIG. 2 is a perspective view showing an elastic member by removing the right thread tension plate of the thread tension device of FIG. 1. 図１の糸調子装置の分解斜視図である。It is a disassembled perspective view of the thread tension device of FIG. 図４の分解部品を左側から見た図である。It is the figure which looked at the disassembled part of FIG. 4 from the left side. 図１の糸調子装置の拡大断面図である。It is an expanded sectional view of the thread tension device of FIG.

以下、図を参照して本発明を実施するための形態を詳細に説明する。
（実施形態）
図１から図３は本発明を適用した糸調子装置の一実施形態の外観、その左側のケース内を透視状態、及び右側の糸調子皿を取り除いて弾性部材をそれぞれ示したもの、図４及び図５は構成部品を分解して左右からそれぞれ示したもの、図６は拡大断面を示したものである。
図中、１・２は糸調子皿、３は糸調子軸、４は押圧軸、５は糸取りばね、６は糸調子台、７は保護カバー、８は挿入部材、１１は第一皿押さえ、１２は第二皿押さえ、１３は弾性部材である。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
1 to 3 show an external appearance of an embodiment of a thread tension device to which the present invention is applied, a perspective view of the inside of the case on the left side, and an elastic member after removing the thread tension plate on the right side, FIG. FIG. 5 shows the components disassembled from the left and right, and FIG. 6 shows an enlarged cross section.
In the figure, 1 and 2 are thread tension plates, 3 is a thread tension shaft, 4 is a pressure shaft, 5 is a thread take-up spring, 6 is a thread tension stand, 7 is a protective cover, 8 is an insertion member, 11 is a first plate presser, Reference numeral 12 denotes a second dish presser, and 13 denotes an elastic member.

糸調子装置は、図示のように、中心部に軸孔１ａ・２ａを有した一対の糸調子皿１・２と、その一対の糸調子皿１・２を貫通して支持する糸調子軸３と、その糸調子軸３を貫通して左側の糸調子皿１を押す押圧軸４と、糸調子軸３の外側に配置されるねじりコイルばねによる糸取りばね５と、その糸取りばね５を覆う糸調子台６と、を備える。また、糸調子台６はミシンフレームに固定されている。
さらに、左側の糸調子皿１の外側と糸調子台６の間に配置した第一皿押さえ１１と、右側の糸調子皿２の外側と保護カバー７の間に配置した第二皿押さえ１２と、その第二皿押さえ１２と右側の糸調子皿２との間の弾性部材１３と、その保護カバー７内及び糸調子軸３に挿入される挿入部材８と、を備える。保護カバー７は右側の第二皿押さえ１２の外側面に当接する。また、第一皿押さえ１１と第二皿押さえ１２の中心部には軸孔が設けられており、軸孔は中央リブ１１ｂ・１２ｂによって一対の孔部に区切られている。 As shown in the figure, the thread tension device includes a pair of thread tension plates 1 and 2 having shaft holes 1a and 2a in the center, and a thread tension shaft 3 that penetrates and supports the pair of thread tension plates 1 and 2. A pressing shaft 4 that passes through the thread tension shaft 3 and pushes the left thread tension plate 1, a thread take-up spring 5 that is a torsion coil spring disposed outside the thread tension shaft 3, and a thread that covers the thread take-up spring 5 A tuning stand 6. The thread tension base 6 is fixed to the sewing machine frame.
Furthermore, a first dish presser 11 disposed between the outer side of the left thread tension tray 1 and the thread tension base 6, and a second dish presser 12 disposed between the outer side of the right thread tension tray 2 and the protective cover 7; And an elastic member 13 between the second dish presser 12 and the right thread tension tray 2, and an insertion member 8 inserted into the protective cover 7 and the thread tension shaft 3. The protective cover 7 is in contact with the outer surface of the right second dish presser 12. In addition, a shaft hole is provided at the center of the first dish presser 11 and the second dish presser 12, and the shaft hole is divided into a pair of holes by central ribs 11b and 12b.

一対の糸調子皿１・２を貫通して支持する糸調子軸３は、軸心に挿通穴３ｃと、中間部の軸線方向に沿った溝３ａと、略右半部に軸線方向に沿って直径方向に貫通するスリット３ｂを有しており、挿通穴３ｃとスリット３ｂは連通している。スリット３ｂは第一皿押さえ１１と第二皿押さえ１２の軸孔を貫通して支持している。そして、挿通穴３ｃ内にピン形状の押圧軸４がスライド可能に挿入されている。この押圧軸４が相通穴３ｃ内を移動してスリット３ｂ側に突出して、第一皿押さえ１１のスリット３ｂ内に位置する中央リブ１１ｂに当接する。   The thread tension shaft 3 that penetrates and supports the pair of thread tension plates 1 and 2 includes an insertion hole 3c at the center, a groove 3a along the axial direction of the intermediate portion, and an axial direction at the substantially right half portion. A slit 3b penetrating in the diameter direction is provided, and the insertion hole 3c and the slit 3b communicate with each other. The slit 3 b penetrates and supports the shaft holes of the first dish presser 11 and the second dish presser 12. A pin-shaped pressing shaft 4 is slidably inserted into the insertion hole 3c. The pressing shaft 4 moves in the communication hole 3 c and protrudes toward the slit 3 b, and comes into contact with the central rib 11 b located in the slit 3 b of the first dish presser 11.

糸取りばね５は、そのねじりコイルばねの一端部に糸掛け部５ａを有し、他端部が糸調子軸３の溝３ａに挿入されて、糸調子軸３の左側上に組み付けた糸調子台６で覆われる。この糸調子台６は、右側の開放端周囲が第一皿押さえ１１の外側面に当接となっている。   The thread take-up spring 5 has a thread hook 5a at one end of the torsion coil spring, the other end is inserted into the groove 3a of the thread tension shaft 3, and is assembled on the left side of the thread tension shaft 3. 6 covered. In the thread tension base 6, the periphery of the right open end is in contact with the outer surface of the first dish presser 11.

そして、第一皿押さえ１１には、左側の糸調子皿１の外側面に対し円周方向等間隔に三点で当接する突起１１ａが一体に形成されている。   Then, the first dish presser 11 is integrally formed with protrusions 11a that come into contact with the outer surface of the left thread tension dish 1 at three points at equal intervals in the circumferential direction.

また、右側の糸調子皿２とその外側の第二皿押さえ１２との間にゴムによる弾性部材１３が配置されている。
さらに、第二皿押さえ１２の外側面に、糸調子軸３の右半部上に組み付けられた保護カバー７の左端部周囲が当接して、その保護カバー７の右端部側から挿入部材８が保護カバー７内に挿入され、さらに挿入部材８は糸調子軸３のスリット３ｂ内に挿入される。 Further, an elastic member 13 made of rubber is disposed between the right thread tension tray 2 and the second dish presser 12 on the outside thereof.
Furthermore, the periphery of the left end portion of the protective cover 7 assembled on the right half of the thread tension shaft 3 is in contact with the outer surface of the second dish presser 12, and the insertion member 8 is inserted from the right end portion side of the protective cover 7. The insertion member 8 is inserted into the protective cover 7, and the insertion member 8 is inserted into the slit 3 b of the thread tension shaft 3.

なお、左側の糸調子皿１を右側の糸調子皿２に押し付けて糸に付与する張力を可変とする駆動装置として図示しない電磁ソレノイドが備えられ、そのソレノイドをオンにして押圧軸４を右側に押すことにより、図６の状態から、第一皿押さえ１１を経て左側の糸調子皿１を右側の糸調子皿２に押し付けて、糸張力を調整する。
また、ソレノイドをオフにすると、押圧軸４は図示しない戻しばねの付勢により左側の初期位置に戻る（図６参照）。 In addition, an electromagnetic solenoid (not shown) is provided as a drive device that changes the tension applied to the yarn by pressing the left thread tension tray 1 against the right thread tension tray 2, and the solenoid is turned on to turn the pressing shaft 4 to the right. By pressing, the thread tension tray 1 on the left side is pressed against the thread tension tray 2 on the right side through the first dish presser 11 to adjust the thread tension.
When the solenoid is turned off, the pressing shaft 4 returns to the initial position on the left side by biasing a return spring (not shown) (see FIG. 6).

以上のように、第一皿押さえ１１に一体に形成した突起１１ａが、左側の糸調子皿１の外側面に対し円周方向等間隔に三点で当接することにより、押圧力を三点に集中することができる。
一方、従来の皿押さえは、糸調子皿１を平坦な面で押しているので、押圧力が分散される。
本実施形態は、三点の突起１１ａに押圧力を集中するので、振動が加わった場合でも糸調子皿１と第一皿押さえ１１との接触状態を維持することができ、従来の皿押さえに比べて、糸調子皿１を安定的に押すことができる。 As described above, the protrusion 11a formed integrally with the first dish presser 11 comes into contact with the outer surface of the left thread tension dish 1 at three points at equal intervals in the circumferential direction, so that the pressing force is set to three points. You can concentrate.
On the other hand, the conventional dish presser presses the thread tension tray 1 with a flat surface, so that the pressing force is dispersed.
In this embodiment, the pressing force is concentrated on the three protrusions 11a, so that the contact state between the thread tension tray 1 and the first tray presser 11 can be maintained even when vibration is applied. In comparison, the thread tension tray 1 can be pushed stably.

そして、右側の糸調子皿２と、保護カバー７で外側面が固定された第二皿押さえ１２との間に配置した弾性部材１３により、右側の糸調子皿２を弾性的に支持することができる。
従って、ミシンの高速回転時において、糸調子皿１・２の振動を防止して糸張力が緩む問題を解消することができる。 The right thread tension tray 2 can be elastically supported by the elastic member 13 disposed between the right thread tension tray 2 and the second dish presser 12 whose outer surface is fixed by the protective cover 7. it can.
Therefore, when the sewing machine rotates at a high speed, the problem of the thread tension being loosened by preventing the vibration of the thread tension plates 1 and 2 can be solved.

以上、実施形態の糸調子装置によれば、左側の糸調子皿１の外側に配置した第一皿押さえ１１に、左側の糸調子皿１の外側面に対し円周方向等間隔に三点で当接する突起１１ａを設けたので、糸調子皿を平坦面で押す従来の皿押さえよりも糸調子皿１を安定的に押すことができ、さらに、右側の糸調子皿２とその外側の第二皿押さえ１２との間に弾性部材１３を配置したので、ミシンの高速回転時における糸調子皿１・２の振動を防止して糸張力が緩む問題を解消することができる。   As described above, according to the thread tension device of the embodiment, the first dish presser 11 disposed on the outer side of the left thread tension dish 1 is arranged at three points at equal intervals in the circumferential direction with respect to the outer surface of the left thread tension dish 1. Since the abutting protrusion 11a is provided, the thread tension plate 1 can be more stably pushed than the conventional plate presser that presses the thread tension plate with a flat surface, and the right side thread tension plate 2 and the second second on the outside thereof. Since the elastic member 13 is disposed between the presser foot 12 and the sewing machine, the thread tension plates 1 and 2 can be prevented from vibrating during the high-speed rotation of the sewing machine, and the problem of loosening the yarn tension can be solved.

（変形例）
以上の実施形態の他、皿押さえ及び突起の形状、弾性部材の形状は任意であり、具体的な細部構造等についても適宜に変更可能であることは勿論である。 (Modification)
In addition to the above embodiments, the shape of the pan presser and the protrusion and the shape of the elastic member are arbitrary, and it is needless to say that the specific detailed structure and the like can be changed as appropriate.

１ 糸調子皿
２ 糸調子皿
３ 糸調子軸
４ 押圧軸
５ 糸取りばね
６ 糸調子台
７ 保護カバー
８ 挿入部材
１１ 第一皿押さえ
１１ａ 突起
１１ｂ 中央リブ
１２ 第二皿押さえ
１３ 弾性部材 DESCRIPTION OF SYMBOLS 1 Thread tension tray 2 Thread tension tray 3 Thread tension shaft 4 Pressing shaft 5 Thread take-up spring 6 Thread tension base 7 Protective cover 8 Insertion member 11 First dish presser 11a Projection 11b Central rib 12 Second dish presser 13 Elastic member

Claims (3)

中心部に軸孔を有し、ミシンの糸を挟持する一対の糸調子皿と、
その一対の糸調子皿の一方を他方に押し付けて糸に付与する張力を可変とする駆動装置とを備える糸調子装置において、
前記一対の糸調子皿の外側には中心部に軸孔を有する第一皿押さえと第二皿押さえをそれぞれ配置し、
前記一方の糸調子皿の外側に配置した前記第一皿押さえに、前記一方の糸調子皿の外側面に対し円周方向等間隔に三点で当接する突起を設けて、
前記他方の糸調子皿とその外側に配置した前記第二皿押さえとの間に弾性部材を配置したことを特徴とするミシンの糸調子装置。 A pair of thread tension plates having a shaft hole in the center and sandwiching the thread of the sewing machine;
In a thread tension device provided with a drive device that varies the tension applied to the yarn by pressing one of the pair of thread tension plates against the other,
A first dish presser and a second dish presser each having a shaft hole at the center thereof are arranged on the outside of the pair of thread tension plates,
Providing the first dish presser disposed on the outside of the one thread tension tray with protrusions that come in contact with the outer surface of the one thread tension tray at three equal intervals in the circumferential direction,
A thread tension device for a sewing machine, characterized in that an elastic member is disposed between the other thread tension plate and the second plate presser disposed on the outside thereof. 一端側から他端側にかけて軸心に挿通穴を設け、他端側に軸心に沿って直径方向に貫通するスリットを有し、前記スリットは前記挿通穴と連通し、前記一対の糸調子皿及び前記第一皿押さえと第二皿押さえを軸心に沿って移動可能に支持する糸調子軸と、
前記糸調子軸の前記挿通穴に前記軸心に沿って移動可能に挿入された押圧軸と、
を備え、
前記第一皿押さえの軸孔は中央リブによって一対の孔部に区切られ、
前記駆動機構の駆動によって前記押圧軸を前記第一皿押さえの中央リブに当接させ、前記一方の糸調子皿を前記他方の糸調子皿に向けて押し付けることを特徴とする請求項１に記載のミシンの糸調子装置。 An insertion hole is provided in the shaft center from one end side to the other end side, and there is a slit penetrating in the diametrical direction along the shaft center on the other end side. The slit communicates with the insertion hole, and the pair of thread tension plates And a thread tension shaft that supports the first plate presser and the second plate presser so as to be movable along the axis,
A pressing shaft inserted into the insertion hole of the thread tension shaft so as to be movable along the axis; and
With
The shaft hole of the first dish presser is divided into a pair of holes by a central rib,
The press shaft is brought into contact with a central rib of the first dish presser by driving of the drive mechanism, and the one thread tension dish is pressed toward the other thread tension dish. Sewing machine thread tension device. 前記糸調子軸の前記一端側に組み付けられた糸調子台と、
前記糸調子軸の前記他端側に組み付けられ、前記一対の糸調子皿の移動を規制する保護カバーと、
を備え、
前記第一皿押さえは、前記一方の糸調子皿と前記糸調子台の間に配置され、
前記第二皿押さえは、前記他方の糸調子皿と前記保護カバーの間に配置されることを特徴とする請求項２に記載のミシンの糸調子装置。 A thread tension base assembled to the one end side of the thread tension shaft;
A protective cover that is assembled to the other end of the thread tension shaft and restricts movement of the pair of thread tension plates;
With
The first dish presser is disposed between the one thread tension plate and the thread tension table,
The thread tension device for a sewing machine according to claim 2, wherein the second dish presser is disposed between the other thread tension tray and the protective cover.
JP2016084875A 2016-04-21 2016-04-21 Thread tension device of sewing machine Pending JP2017192573A (en)

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CN201710266303.1A CN107304500A (en) 2016-04-21 2017-04-21 The line adjuster device of sewing machine

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