JP2621184B2 - Sewing machine top cover opening and closing device - Google Patents

Sewing machine top cover opening and closing device

Info

Publication number
JP2621184B2
JP2621184B2 JP16011087A JP16011087A JP2621184B2 JP 2621184 B2 JP2621184 B2 JP 2621184B2 JP 16011087 A JP16011087 A JP 16011087A JP 16011087 A JP16011087 A JP 16011087A JP 2621184 B2 JP2621184 B2 JP 2621184B2
Authority
JP
Japan
Prior art keywords
thread
top cover
lever
spring
sewing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP16011087A
Other languages
Japanese (ja)
Other versions
JPS645596A (en
Inventor
均 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP16011087A priority Critical patent/JP2621184B2/en
Publication of JPS645596A publication Critical patent/JPS645596A/en
Application granted granted Critical
Publication of JP2621184B2 publication Critical patent/JP2621184B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は、ミシンのトツプカバー開閉装置に関し、自
動縫製ミシン、例えば刺しゆうミシン等の構成に利用さ
れる。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a top cover opening and closing device for a sewing machine, and is used for a configuration of an automatic sewing machine, for example, a stab sewing machine.

(従来の技術) 従来ミシンでは、天ビンの糸操作部や針棒の針留め部
位付近は、ミシン運転中も露出されており、使用者の手
先が不用意に触れ得る位置にある(特公昭40−14967号
添付図面参照)。
(Prior art) In the conventional sewing machine, the vicinity of the thread operating portion of the top bottle and the needle bar of the needle bar are exposed even during the operation of the sewing machine, so that the user's hand can be inadvertently touched. No. 40-14967).

特に家庭におけるミシン裁縫では、機械に不慣れな女
性や子供達が使用する機会も多く、誤つて前記運動部に
手を触れ、怪我をすることがまま見受けられた。そこで
安全性のため、運転中はこの運動部に手を触れることが
できないようにすればよいという漠然とした考え方があ
つた。
Particularly in sewing at home, women and children who are unfamiliar with the machine often use the sewing machine, and it has been found that the exerciser touches the exercise part by mistake and is injured. Therefore, for safety reasons, there was a vague idea that it was only necessary to keep the athletic club from touching while driving.

(発明が解決しようとする問題点) 上記考え方を実現するには、天ビン,針等運動部にカ
バーを被せるとよい。しかし、これらをカバーで覆うと
なれば、ミシンの上糸をセツトする時や、糸がからまつ
た時、その他運針上のトラブル発生時には、その都度カ
バーの脱着操作が必要となる。そしてこの取扱いは甚だ
厄介で手間をくい、作業能率を損う恐れが多分にある。
(Problems to be Solved by the Invention) In order to realize the above idea, it is preferable to cover a moving part such as a top bottle or a needle. However, if these are to be covered with a cover, the cover needs to be detached every time when the upper thread of the sewing machine is set, when the thread is twisted, or when a trouble in hand operation occurs. This handling is extremely troublesome and troublesome, and there is a possibility that the work efficiency may be impaired.

本発明では、上記事情を勘案し、簡単な操作で、装着
したカバーの開閉ができ、しかも、カバーの開放時には
ミシンが運転されないような、自動的連動機構の構成を
計つたものである。
In the present invention, an automatic interlocking mechanism is provided in which the attached cover can be opened and closed with a simple operation in consideration of the above circumstances, and the sewing machine is not operated when the cover is opened.

〔発明の構成〕[Configuration of the invention]

(問題点を解決するための手段) 本発明での上記達成手段は次の通りである。即ち、糸
掛け部とセンサ作動部と離脱レバー部とを有し、糸取り
バネにより一方向に付勢される糸取りレバーを、天ビン
の糸操作部近くに揺動可能に設けた。そして、前記セン
サ作動部にフオトインタラプタのスリツト部を係合させ
て、糸取りレバーの揺動じ信号を発生するようにした。
(Means for Solving the Problems) The means for achieving the above in the present invention are as follows. That is, a thread take-up lever having a thread catching section, a sensor operating section, and a release lever section, and being urged in one direction by a thread take-up spring, is provided so as to be swingable near the thread operating section of the top bin. The slit portion of the photo interrupter is engaged with the sensor operating portion to generate a swing signal of the thread take-up lever.

また、前記離脱レバーに当接するスライド板を設け、
前記糸取りバネより強いバネ力で前記糸掛け部が起き上
る方向に付勢せしめた。
Also, a slide plate is provided to abut the release lever,
The thread catching portion is urged by a spring force stronger than the thread take-up spring in a direction in which the thread catching portion rises.

そして、一端が機枠に支持され針棒部等の運動部を覆
う開閉可能なトツプカバーを設け、該トツプカバーを閉
めた時、前記スライド板が押し戻されるようにした。
An openable and closable top cover, one end of which is supported by the machine frame and covers a moving part such as a needle bar, is provided, and when the top cover is closed, the slide plate is pushed back.

(作用) トツプカバーを手で押えて閉めると、スライド板が押
し下げられることにより、トツプカバーラツチとトツプ
カバーの各フツク部が係合し、トツプカパーは閉の位置
に保持される。そして、スライド板で押し上げられてい
た糸取りレバーが解放されて回動し、そのセンサ作動部
とフオトインタラプタのスリツト部との係合が外れる。
これによる信号でマイコンはトツプカバーが閉つたと判
断する。そこでミシンを運転させるとよい。
(Operation) When the top cover is pressed and closed by hand, the slide plate is pushed down, whereby the top cover latch and each hook portion of the top cover are engaged, and the top cover is held at the closed position. Then, the thread take-up lever pushed up by the slide plate is released and rotated, and the engagement between the sensor operating portion and the slit portion of the photointerrupter is released.
The microcomputer determines from this signal that the top cover has been closed. Therefore, it is good to operate the sewing machine.

トツプカバーには常に開放方向にバネ力が働いてお
り、トツプカバーボタンを押すと前記トツプカバーラツ
チとトツプカバーの係合しているフツクが外れてトツプ
カバーは開放される。従つて、針,天ビン等の運動部が
露出する。このとき、スライド板はバネ付勢されている
糸取りレバーの離脱部を押し上げる。これにより、セン
サ作動部はフオトインタラプタのスリツト部と係合状態
になり、この信号でマイコンはトツプカバーか開いてい
ると判断する。そしてミシンは運転されないようなる。
A spring force is always applied to the top cover in the opening direction. When the top cover button is pressed, the hook between the top cover latch and the top cover is released and the top cover is opened. Accordingly, the moving parts such as the needle and the top bottle are exposed. At this time, the slide plate pushes up the release portion of the thread take-up lever which is biased by the spring. As a result, the sensor operating section is engaged with the slit section of the photo interrupter, and the microcomputer determines from this signal that the top cover is open. Then, the sewing machine is not operated.

(実施例) 以下、第1〜13図を参照し、小形の刺しゆうミシンに
応用した本発明の実施例について説明する。
(Embodiment) Hereinafter, an embodiment of the present invention applied to a small-sized piercing sewing machine will be described with reference to FIGS.

ベツド1に、図示せぬ軸受で回動自在に軸支された主
軸2の一端には、クランク3が固着されており、クラン
クロツド4、クランクピン5を介して針棒腕6と連接さ
れている。前記針棒腕6は、その中央部に固着された揺
動軸7が球形ブツシング8,8により軸支され、一端には
針棒9が固着され、該針棒9には針留め11,針留めねじ1
2により針13が固着されている。大タイミングギヤ26aと
小タイミングギヤ26bにはタイミングベルト22が掛けら
れ大タイミングギヤ26aと小タイミングギヤ26bの歯数の
比は2:1となつている。これにより、釜23は、主軸2の
1回転中に2回転する。クランク3には天ビンクランク
ピンが回動自在に嵌合しておりブツシング15,ブツシン
グホルダ16を介して天ビン19に固着されたスライド軸17
に運動が伝えられ、天ビン軸18に軸支された天ビン19が
早戻り運動を起こしつつ揺動する。前記天ビン19の一端
には、天ビンロツド21の一端がピン20により揺動可能に
連結されている。又、前記天ビンロツド21の他端には一
対の溝21a,21aとフツク21bが設けられている。
A crank 3 is fixed to one end of a main shaft 2 rotatably supported by a bead 1 with a bearing (not shown), and is connected to a needle bar arm 6 via a crank rod 4 and a crank pin 5. . The needle bar arm 6 has a pivot shaft 7 fixed at the center thereof supported by spherical bushings 8, 8, and a needle bar 9 fixed to one end. Set screw 1
The needle 13 is fixed by 2. The timing belt 22 is hung on the large timing gear 26a and the small timing gear 26b, and the ratio of the number of teeth between the large timing gear 26a and the small timing gear 26b is 2: 1. Thus, the shuttle 23 rotates twice during one rotation of the main shaft 2. A top bin crank pin is rotatably fitted to the crank 3, and a slide shaft 17 fixed to the top bin 19 via a bushing 15 and a bushing holder 16.
The top bottle 19 pivotally supported by the top bin shaft 18 swings while causing a quick return movement. One end of a top bin 19 is pivotally connected to one end of a top bin rod 21 by a pin 20. The other end of the top bin rod 21 is provided with a pair of grooves 21a, 21a and a hook 21b.

機枠28はベツド1の上面にねじ締めされていてガイド
板29が固着されている。ガイド板29は略L字状をしてお
り、その水平部分には前記天ビンロツド21の溝21a,21a
が嵌入してスライド可能な長穴29aを有している。前記
ガイド板29の垂直部分には、スライド板に固着された頭
付きピン33,33が嵌入してスライド可能な長穴29b,29bが
設けられている。トツプカバーラツチ34は、T字状をし
ており第1の腕にはフツク部34a,第2の腕にはばね掛け
部34b,第3の腕には押付作動部34cがそれぞれ形成され
中央部には穴34dが形成されている。そして、前記ガイ
ド板29に固着された軸34に遊嵌している(第2,6図参
照)。ばね34は、前記トツプカバーラツチ34のばね掛け
部34bと前記スライド板32の下方に設けられた突起32aと
に掛けられ第6図に於いてトツプカバーラツチ34を時計
方向に回動付勢し、スライド板32を上方に付勢してい
る。
The machine frame 28 is screwed to the upper surface of the bed 1 and a guide plate 29 is fixed thereto. The guide plate 29 is substantially L-shaped, and its horizontal portion has grooves 21a, 21a of the top bin rod 21.
Has an elongated hole 29a which can be fitted and slid. In the vertical portion of the guide plate 29, there are provided long holes 29b, 29b into which pins with heads 33, 33 fixed to the slide plate can fit and slide. The top cover latch 34 has a T-shape. A hook portion 34a is formed on the first arm, a spring hook portion 34b is formed on the second arm, and a pressing operation portion 34c is formed on the third arm. Is formed with a hole 34d. Then, it is loosely fitted on a shaft 34 fixed to the guide plate 29 (see FIGS. 2 and 6). The spring 34 is hung on a spring hook portion 34b of the top cover latch 34 and a projection 32a provided below the slide plate 32 to urge the top cover latch 34 in a clockwise direction in FIG. The slide plate 32 is urged upward.

糸取りレバー39は、略Y字状をしており、第1の腕は
糸掛け部39a,第2の腕はセンサ作動部39b,第3の腕は離
脱レバー部39cを有し、中央には、穴39dが形成され、取
付板36に固着された軸37に遊嵌している。ねじりばね38
の一端38aは、前記糸取レバー39に掛けられ他端38bは前
記取付板36の前記37の回りに穿けられた複数の穴36aの
内の一つに掛けかれており第6図に於いて常に反時計方
向に前記糸取りレバー39が回動するように付勢されてい
る。フオトインタラプタ42は、スペーサ41を介して取付
板36にねじ43により取付けられ、そのスリツト部42a
は、前記糸取りレバー39のセンサ作動部39bに係合して
いる。そして取付板36は、ねじ44によりガイド板29に取
付けられている。46は下ケーシング、47は上ケーシング
であり前記機構部を覆つている。前記上ケーシング47に
は凹部47aが設けてあり糸カセツト100(第9図)が挿入
される。該糸カセツト100はボビンに巻かれた糸51,カセ
ツト50,板バネ52,ビン53,シール54,カバー55から成つて
おり、前記カセツト50は中央部に前記糸51の外径より若
干大きい穴50aと、糸51の端部51aが挿通するスリツト50
bと同じく前記糸51の端部51aが挿通するT字状の穴50c
とを有していて前記糸51は、前記穴50aに収まりその端
部51aがスリツト50b,穴50cを通りカセツト100の外側に
出ている。板ばね52は、略L字状をしており一端部に
は、突起52aを有し、前記カセツト本体の一側面に設け
られた複数個のノツチ50dの1つに係合し他端は、ピン5
3との間で前記糸51の端部51aを挟持し、張力を付与して
いる。
The thread take-up lever 39 has a substantially Y-shape. The first arm has a thread hook portion 39a, the second arm has a sensor operating portion 39b, and the third arm has a release lever portion 39c. , A hole 39d is formed, and is loosely fitted to the shaft 37 fixed to the mounting plate. Torsion spring 38
One end 38a is hung on the thread take-up lever 39, and the other end 38b is hung on one of a plurality of holes 36a drilled around the 37 of the mounting plate 36, as shown in FIG. The thread take-up lever 39 is always urged to rotate counterclockwise. The photo-interrupter 42 is mounted on the mounting plate 36 by a screw 43 via a spacer 41, and its slit portion 42a
Is engaged with the sensor operating portion 39b of the thread take-up lever 39. The mounting plate 36 is mounted on the guide plate 29 by screws 44. 46 is a lower casing, and 47 is an upper casing, which covers the mechanism. The upper casing 47 is provided with a recess 47a, into which the thread cassette 100 (FIG. 9) is inserted. The thread cassette 100 is composed of a thread 51 wound around a bobbin, a cassette 50, a leaf spring 52, a bin 53, a seal 54, and a cover 55, and the cassette 50 has a hole in the center portion slightly larger than the outer diameter of the thread 51. 50a and a slit 50 through which the end 51a of the thread 51 is inserted.
A T-shaped hole 50c through which the end 51a of the thread 51 is inserted as in b.
The thread 51 is received in the hole 50a, and the end 51a of the thread 51 extends outside the cassette 100 through the slit 50b and the hole 50c. The leaf spring 52 has a substantially L-shape and has a projection 52a at one end, and engages with one of a plurality of notches 50d provided on one side surface of the cassette body, and the other end has Pin 5
The end 51a of the thread 51 is sandwiched between the thread 51 and 3 to apply tension.

糸の種類や糸の太さが変わつた場合は、前記カセツト
本体50のノツチ50dと、前記板ばね52の突起52aの係合位
置を変えることにより前記ピン53と前記板ばね52の挟持
圧を変え、張力を調整することが出来る。
When the type of the thread and the thickness of the thread change, the clamping pressure between the pin 53 and the leaf spring 52 is reduced by changing the engagement position between the notch 50d of the cassette body 50 and the projection 52a of the leaf spring 52. Change and adjust the tension.

カバー55は透明な合成樹脂で成形されており前記カセ
ツト本体50に覆せられ、前記糸51の放出防止を行つてい
る。該カバー55の一角部は大きく面取りを施してあり、
上ケーシング47の凹部47aも同じく面取りを施し、使用
者が糸カセツト100を間違えて、逆に挿入しようとした
場合は、全体が入らないため、すぐ気付くようにしてあ
る。54は、糸のカタログNo.や番手,色調,名称等を表
示したシールで前記カセツト本体50の前記穴50cが設け
られた側面に貼付されている。該シール54の一端には、
スリツト54aが切られており前記カセツト本体の穴50cの
近くに来るようにシール54が貼付けられる。しかして、
糸カセツト100を不使用時は前記カセツト本体50の穴50c
から出ている前記糸51の端部51aを前記スリツト54aに挟
み込むことにより、糸51の端部51aがみだりに繰り出さ
れたり逆にカセツト100内に入り込んでしまつたりする
のを防止することが出来る。56は糸カセツト放出ボタン
で、糸カセツト10を上ケーシング47の凹部47aから放出
する時使用する。該糸カセツト放出ボタン56の先端は、
糸カセツト放出レバー57の一端と連結されている。糸カ
セツト放出レバー57は、中央に一対の突起57a,57aを有
しており、前記上ケーシング47の凹部47aの下部に設け
られた一対の切欠き47b,47bに係合しており該糸カセツ
ト放出レバー57は、該突起57a,57aを中心として揺動可
能である。該糸カセツト放出レバーは、ばね58の一端が
前記突起57a,57aを通過するように掛けられその他端
は、前記上ケーシング47の凹部47aの下部に設けられた
一対の切欠き47c,47cに係止されたピンに掛けられてい
る。このため、糸カセツト放出ボタン56を下方に押す
と、第6図に於いて、糸カセツト放出レバー57が時計方
向に回動し、中間点を過ぎるとばね58によりさらに時計
方向に回そうとする荷重を受けるが、前記糸カセツト放
出ボタン56によりストツプされる。
The cover 55 is formed of a transparent synthetic resin and is covered by the cassette body 50 to prevent the thread 51 from being released. One corner of the cover 55 is greatly chamfered,
The concave portion 47a of the upper casing 47 is also chamfered so that if the user mistakenly inserts the thread cassette 100 and tries to insert the thread cassette 100 in the opposite direction, the entirety does not enter, so that the user is immediately aware. Numeral 54 denotes a seal indicating the catalog number, yarn count, color tone, name and the like of the yarn, which is affixed to the side face of the cassette body 50 where the hole 50c is provided. At one end of the seal 54,
The slit 54a is cut and a seal 54 is attached so as to come near the hole 50c of the cassette body. Then
When the thread cassette 100 is not used, the hole 50c of the cassette body 50 is used.
By sandwiching the end 51a of the thread 51 coming out of the slit 54a into the slit 54a, it is possible to prevent the end 51a of the thread 51 from being unintentionally fed out or conversely getting into the cassette 100 and getting stuck. . A thread cassette release button 56 is used to release the thread cassette 10 from the recess 47a of the upper casing 47. The tip of the thread cassette release button 56 is
It is connected to one end of the thread cassette releasing lever 57. The thread cassette releasing lever 57 has a pair of projections 57a, 57a at the center, and engages with a pair of notches 47b, 47b provided below the concave portion 47a of the upper casing 47, so that the thread cassette is released. The release lever 57 can swing about the projections 57a, 57a. The thread cassette releasing lever is hooked so that one end of a spring 58 passes through the projections 57a, 57a, and the other end is engaged with a pair of notches 47c, 47c provided in a lower portion of the concave portion 47a of the upper casing 47. Hanged on a stopped pin. For this reason, when the thread cassette release button 56 is pressed downward, the thread cassette release lever 57 rotates clockwise in FIG. 6, and after passing the intermediate point, the spring 58 attempts to further rotate clockwise. Although it receives a load, it is stopped by the thread cassette release button 56.

この時、糸カセツト100は、前記糸カセツト放出レバ
ー57の端部57bにより若干量放出される。逆に糸カセツ
ト100を下方に押し込むと、前記糸カセツト放出レバー5
7がばね58に抗して反時計方向に回動し糸カセツト放出
ボタンを押し上げる。そして、中間点を過ぎると前記ば
ね58によりさらに反時計方向に回そうとする荷重を受け
るが、前記ピン59によりストツプされる。71はパイロツ
トランプで図示しないが電源スイツチを投入すると点灯
し、又、前記フオトインタラプタ42からのパルス信号が
出なくなると点滅するようマイコンによる制御する。73
はランプレンズ,72は基板である。67はトツプカバーで
上ケーシング47をカバーしておりヒンジ60により前記機
枠28に固着された一対のヒンジピン63,63を中心として
回動可能である。62はばねで、前記ヒンジ60に固着され
たばね掛け61と前記機枠28に固着されたばね掛け64に掛
けられ、常に前記トツプカバーが開放するよう付勢して
いる。前記ヒンジ60には歯車部60a,60aが形成されてお
り前記機枠28に取付けられたダンパ65,65と噛み合い前
記トツプカバー67が開放する時シヨツクを柔らげてい
る。前記トツプカバー67の端部には、フツク67aが形成
されトツプカバー67を閉めた時は、トツプカバーラツチ
34のフツク部34aと噛み合いトツプカバー67を係止して
いる。さらに前記フツク67aの先端には、前記スライド
板32の舌片32bに当接しており、トツプカバー67により
スライド板32は、前記ばね35に抗して押し下げられてい
る。69は、トツプカバーボタンでトツプカバー67の穴67
bに係合し、上方に向つて伸びた腕69a,69aには、突起69
b,69bが形成され前記トツプカバー67の穴67c,67cに嵌合
しており揺動可能である。さらに、ばね70により常に外
方に向つて付勢されている。トツプカバーボタン69は、
舌状突起69cを有しており前記トツプカバーラツチ34の
押付作動部34cに当接している。天ビンカバー48は、前
記天ビンロツド21のフツク21hを覆つておりその上面に
は、糸案内49が固着されている。
At this time, the thread cassette 100 is slightly released by the end portion 57b of the thread cassette releasing lever 57. On the contrary, when the thread cassette 100 is pushed downward, the thread cassette release lever 5
7 rotates counterclockwise against the spring 58 to push up the thread cassette release button. Then, after passing through the intermediate point, the spring 58 receives a load for further turning in the counterclockwise direction, but is stopped by the pin 59. Reference numeral 71 denotes a pilot lamp (not shown) which is turned on when a power switch is turned on, and is controlled by a microcomputer so as to blink when no pulse signal is output from the photointerrupter 42. 73
Is a lamp lens, and 72 is a substrate. Reference numeral 67 denotes a top cover that covers the upper casing 47, and is rotatable about a pair of hinge pins 63 fixed to the machine frame 28 by hinges 60. A spring 62 is hung on a spring hook 61 fixed to the hinge 60 and a spring hook 64 fixed to the machine frame 28, and constantly urges the top cover to open. Gears 60a, 60a are formed on the hinge 60, and mesh with the dampers 65, 65 attached to the machine frame 28 to soften the shock when the top cover 67 is opened. A hook 67a is formed at an end of the top cover 67, and when the top cover 67 is closed, the top cover latch is provided.
The top cover 67 is engaged with the hook portion 34a of the lock 34. Further, the tip of the hook 67a is in contact with the tongue piece 32b of the slide plate 32, and the slide plate 32 is pushed down by the top cover 67 against the spring 35. 69 is the top cover button and 67 is the hole
b, the arms 69a, 69a extending upward
b and 69b are formed and fitted into the holes 67c and 67c of the top cover 67, and can swing. Further, the spring 70 is always biased outward. Top cover button 69
The tongue-shaped projection 69c is in contact with the pressing operation portion 34c of the top cover latch 34. The top bin cover 48 covers the hook 21h of the top bin rod 21, and a thread guide 49 is fixed to an upper surface thereof.

以下、裁縫手順に従つて動作を説明する。 The operation will be described below according to the sewing procedure.

トツプカバーボタン69を押すと舌状突起69cがトツプ
カバーラツチ34の押付作動部34cを押圧し、トツプカバ
ーラツチ34がばね35に抗して反時計方向に回動し、フツ
ク部34aがトツプカバー67のフツク67aから外れる。トツ
プカバー67は、ばね62により常に開放されるよう付勢さ
れているため、第7図のように開く。一方、スライド板
32は、トツプカバー67の押圧力が無くなるため、ばね35
により上方に引き上げられ、該スライド板32の突起32c
が、糸取りレバー39の離脱レバー部39cをねじりばね38
の力に抗して押し上げる。このため、糸取りレバー39
は、時計方向に回動してセンサ作動部36bがフオトイン
タラプタ42がスリツト部42aをしやへいする。この時フ
オトインタラプタ42から出ている信号は、常時Hiとなり
マイコンは、トツプカバー67が開いていると判断する。
次に糸カセツト100を上ケーシング47の凹部47aに挿入す
ると、糸カセツト放出レバー57がばね58に抗して揺動
し、糸カセツト放出ボタン56が上昇する。糸51の端部51
aを引き出し糸取りレバー39のフツク部39a,天ビンロツ
ド21のフツク21bに引つ掛け糸案内49を経て、針13に通
す。
When the top cover button 69 is pressed, the tongue-shaped projection 69c presses the pressing operation portion 34c of the top cover latch 34, the top cover latch 34 rotates counterclockwise against the spring 35, and the hook portion 34a is moved to the top cover 67. Off the hook 67a. Since the top cover 67 is urged by the spring 62 to be always opened, it opens as shown in FIG. Meanwhile, slide plate
32 is the spring 35 because the pressing force of the top cover 67 is lost.
And the protrusion 32c of the slide plate 32
Twists the release lever portion 39c of the thread take-up lever 39 with a torsion spring 38.
Push up against the power of. For this reason, the thread take-up lever 39
Is turned clockwise so that the sensor operating part 36b is more sensitive to the photointerrupter 42 than the slit part 42a. At this time, the signal output from the photointerrupter 42 is always Hi, and the microcomputer determines that the top cover 67 is open.
Next, when the thread cassette 100 is inserted into the concave portion 47a of the upper casing 47, the thread cassette releasing lever 57 swings against the spring 58, and the thread cassette releasing button 56 is raised. End 51 of thread 51
a is pulled through the hook portion 39a of the draw-out thread take-up lever 39 and the hook 21b of the top bin rod 21, and is passed through the needle 13 through the hook thread guide 49.

〔発明の効果〕 (1)フオトインタラプタがケーシング内に納められて
いるため、外乱光やホコリにより受ける機能的障害をシ
ヤツトアウトできる。
[Effects of the Invention] (1) Since the photointerrupter is housed in the casing, it is possible to shut out a functional obstacle caused by disturbance light or dust.

(2)ミシン運転中は、針,天ビン等の運動部はトツプ
カバーで覆われるので、手先等が触れて怪我するような
不都合がない。
(2) During the operation of the sewing machine, the moving parts such as the needle and the top bottle are covered with the top cover, so that there is no inconvenience such as injury by touching the hand.

(3)トツプカバーの開閉に伴い信号回路が働いてミシ
ンが運転されないようになり、且つ、警告ランプの点灯
をも併せ安全性が高められる。
(3) The signal circuit operates with the opening and closing of the top cover, so that the sewing machine is not operated, and the safety is enhanced by lighting the warning lamp.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明装置を備えたミシンの外観図、第2図は
構成要部部品の展開説明図、第3図はトツプカバーを外
した平面図、第4,5,6図の夫々は、第3図のA−A,B−B,
C−C矢視断面図、第7図は第6図示トツプカバーを開
いた図、第8及び9図は夫々糸カセツトの縦及び横方向
断面図、第10ないし13図は主軸センサと糸切れセンサの
パルス信号の発信状態を示す図である。 9……針棒,11……針止め, 19……天ビン,32……スライド板, 34……トツプカバーラツチ, 34a……カバーラツチフツク, 38……糸取りバネ, 39……糸取りレバー, 39a……糸掛け部, 39b……センサ作動部, 39c……離脱レバー, 42……フオトインタラプタ, 67……トツプカバー, 67a……トツプカバーフツク, 69……トツプカバーボタン, 69c……舌状突起, 71……パイロツトランプ
FIG. 1 is an external view of a sewing machine provided with the apparatus of the present invention, FIG. 2 is an exploded view of essential components, FIG. 3 is a plan view of the sewing machine with a top cover removed, and FIGS. AA, BB in FIG. 3,
FIG. 7 is a sectional view taken along the line CC, FIG. 7 is a view showing the top cover opened in FIG. 6, FIGS. 8 and 9 are longitudinal and transverse sectional views of the thread cassette, respectively, and FIGS. FIG. 5 is a diagram showing a transmission state of a pulse signal of FIG. 9: Needle bar, 11: Needle stopper, 19: Top bottle, 32: Slide plate, 34: Top cover latch, 34a: Cover latch, 38 ... Thread take-up spring, 39 ... Thread take-up lever, 39a ... thread hook part, 39b ... sensor operating part, 39c ... release lever, 42 ... photo interrupter, 67 ... top cover, 67a ... top cover hook, 69 ... top cover button, 69c ... tongue-shaped Projection, 71 ... Pilot lamp

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】天ビンの糸操作部の近くに揺動可能に配置
された、糸掛け部とセンサ作動部と離脱レバー部とを備
える糸取りレバー、 前記糸取りレバーは糸取りバネにより一方向に回動付勢
され、そのセンサ作動部にフオトインタラプタのスリツ
ト部の係合させて該糸取りレバーの揺動により、信号を
発するようにすると共に、前記離脱レバー部に当接する
スライド板を介して、糸取りレバーに対し、前記糸取り
バネより強いバネ力によりその糸掛け部が起き上る方向
に付勢し、機枠に一端を支持し開閉可能なトツプカバー
により、天ビンの糸操作部や針棒部を覆い、前記トツプ
カバーを閉めた時該トツプカバーが前記スライド板を押
し戻すように構成したミシンのトツプカバー開閉装置。
1. A thread take-up lever having a thread catching section, a sensor operating section, and a release lever section, which is swingably disposed near a thread operating section of a top bin, wherein the thread take-up lever is rotated in one direction by a thread take-up spring. The sensor is actuated to engage the slit portion of the photointerrupter with the sensor operating portion so that a signal is generated by the swinging of the thread take-up lever, and the thread take-up is performed via a slide plate abutting on the release lever portion. The lever is urged by a spring force stronger than the thread take-up spring in a direction in which the thread catching portion rises, and the thread operating portion and the needle bar portion of the top bottle are covered by a top cover which is supported at one end by the machine frame and can be opened and closed. A top cover opening / closing device for a sewing machine, wherein the top cover pushes back the slide plate when the top cover is closed.
JP16011087A 1987-06-27 1987-06-27 Sewing machine top cover opening and closing device Expired - Fee Related JP2621184B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16011087A JP2621184B2 (en) 1987-06-27 1987-06-27 Sewing machine top cover opening and closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16011087A JP2621184B2 (en) 1987-06-27 1987-06-27 Sewing machine top cover opening and closing device

Publications (2)

Publication Number Publication Date
JPS645596A JPS645596A (en) 1989-01-10
JP2621184B2 true JP2621184B2 (en) 1997-06-18

Family

ID=15708070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16011087A Expired - Fee Related JP2621184B2 (en) 1987-06-27 1987-06-27 Sewing machine top cover opening and closing device

Country Status (1)

Country Link
JP (1) JP2621184B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081804A1 (en) * 2001-03-30 2002-10-17 Brother Kogyo Kabushiki Kaisha Sewing apparatus and storage medium for the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002218514A1 (en) * 2000-12-06 2002-06-18 Brother Kogyo Kabushiki Kaisha Sewing apparatus
FR3028715B1 (en) * 2014-11-25 2017-03-31 Pellenc Sa MOTORIZED CUTTING TOOL GUARDED.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081804A1 (en) * 2001-03-30 2002-10-17 Brother Kogyo Kabushiki Kaisha Sewing apparatus and storage medium for the same

Also Published As

Publication number Publication date
JPS645596A (en) 1989-01-10

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