JPS60176788U - sewing machine thread cutting device - Google Patents
sewing machine thread cutting deviceInfo
- Publication number
- JPS60176788U JPS60176788U JP6331384U JP6331384U JPS60176788U JP S60176788 U JPS60176788 U JP S60176788U JP 6331384 U JP6331384 U JP 6331384U JP 6331384 U JP6331384 U JP 6331384U JP S60176788 U JPS60176788 U JP S60176788U
- Authority
- JP
- Japan
- Prior art keywords
- thread trimming
- thread
- switch
- response
- motor
- 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.)
- Granted
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のミシンの糸切り装置の要部を示す斜視図
、第２図は糸切り機構を示す平面図、第３図はこの発明
の一実施例の要部を示す斜視図、第４図は第３図に示し
たレバー、カムおよび一針スイッチを示す側面図で、同
図ａはカムの小径部とレバーの一端とが接している状態
を示し、同図すはカムの大径部とレバーの一端とが接し
ている状態を示す図、第５図は第３図に示した連動部材
およびカムを示す側面図で、同図ａは操作レバーが水平
位置にある状態を示し、同図すは操作レバーが時計方向
に回転した状態を示している。第６ 図は第３図に示
した作動レバー、カムおよび連結レバーを示す側面図で
、同図ａは操作レバーが水平位置にある状態を示し、同
図すは操作レバーを時計方向へ回転させた状態を示して
いる。第７図は第３図に示した連結レバー、係止レバー
、レバーおよびばね受けを示す側面図、第８図はクララ
−チ機構を示す縦断側面図、第９図はこの考案の
一実施例における電気回路のブロック図である。
３２・・・糸切操作手段としての操作つまみ、７０・・
・制御手段としてのモータ制御回路、５５・・・上軸、
Ａ・・・糸切機構、Ｂ・・・クラッチ機構、Ｓｌ・・・
−針スイッチ。
第２図
Ａ
（ａ） ５１
２８（ｂ）−５，・FIG. 1 is a perspective view showing the main parts of a conventional sewing machine thread cutting device, FIG. 2 is a plan view showing the thread cutting mechanism, and FIG. 3 is a perspective view showing the main parts of an embodiment of the present invention. Figure 4 is a side view showing the lever, cam, and one-hand switch shown in Figure 3. Figure a shows a state in which the small diameter part of the cam is in contact with one end of the lever, and figure a shows a state in which the small diameter part of the cam is in contact with one end of the lever, and figure FIG. 5 is a side view showing the interlocking member and cam shown in FIG. 3, and FIG. 5 is a side view showing the operating lever in the horizontal position. , the figure shows a state in which the operating lever is rotated clockwise. FIG. 6 is a side view showing the operating lever, cam, and connecting lever shown in FIG. It shows the condition. Fig. 7 is a side view showing the connecting lever, locking lever, lever and spring receiver shown in Fig. 3, Fig. 8 is a longitudinal sectional side view showing the clararch mechanism, and Fig. 9 is an embodiment of the invention. FIG. 2 is a block diagram of an electric circuit in FIG. 32... Operation knob as thread cutting operation means, 70...
・Motor control circuit as control means, 55...upper shaft,
A... Thread cutting mechanism, B... Clutch mechanism, Sl...
- Needle switch. Figure 2A (a) 51 28(b)-5,・
Claims (1)
応じて、作動する一針スイッチと、この−針スイッチの
作動に応じてモータを低速回転させ且つ上軸の特定角で
モータへの電流を遮断する制御手段と、前記糸切操作手
段の非操作時には、モータの回動を上軸に伝達し操作時
には伝達しないクラッチ機構と、前記糸切操作手段の操
作に応じて糸切動作可能状態となり、ミシンの回転によ
り、糸切り動作を行う糸切機構と、前記糸切操作手段の
操作に応じて作動する糸切スイッチと、この糸切りスイ
ッチの作動に応じてモータを回転させると具に上軸の特
定角を検出後、一定時間モータを回転させた後に停止さ
せる制御回路とを備え、前記糸切操作手段の操作位相に
応じてその動作順序を一針スイッチ作動、クラッチ機構
動作可能状態、糸切動作可能状態、糸切スイッチ作動の
順序で動作させるようにしたことを特徴とするミシンの
糸切り装置。The thread trimming device for a sewing machine according to the present invention includes a one-stitch switch that is activated in response to the operation of the thread trimming operation means, and a motor that rotates at a low speed in response to the operation of the one-needle switch, and that rotates the motor at a specific angle of the upper shaft. A control means for cutting off the current, a clutch mechanism that transmits the rotation of the motor to the upper shaft when the thread trimming operating means is not operated but not transmitting the rotation when the thread trimming operating means is operated, and a thread cutting operation that can be performed in response to the operation of the thread trimming operating means. The rotation of the sewing machine causes a thread trimming mechanism that performs thread trimming operations, a thread trimming switch that operates in response to the operation of the thread trimming operation means, and a thread trimming switch that operates in response to the operation of the thread trimming operation means to rotate the motor in response to the operation of the thread trimming switch to operate the thread trimming mechanism. and a control circuit that rotates the motor for a certain period of time after detecting a specific angle of the upper shaft and then stops the motor, and the operation order can be changed according to the operation phase of the thread cutting operation means to operate the single stitch switch or operate the clutch mechanism. A thread cutting device for a sewing machine, characterized in that the device operates in the following order: a state, a state in which thread cutting is possible, and a thread cutting switch is activated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6331384U JPS60176788U (en) | 1984-04-28 | 1984-04-28 | sewing machine thread cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6331384U JPS60176788U (en) | 1984-04-28 | 1984-04-28 | sewing machine thread cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60176788U true JPS60176788U (en) | 1985-11-22 |
| JPS6140295Y2 JPS6140295Y2 (en) | 1986-11-18 |
Family
ID=30593334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6331384U Granted JPS60176788U (en) | 1984-04-28 | 1984-04-28 | sewing machine thread cutting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60176788U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752078A (en) * | 1980-09-12 | 1982-03-27 | Nippon Electric Co | Cathode ray tube display unit |
-
1984
- 1984-04-28 JP JP6331384U patent/JPS60176788U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752078A (en) * | 1980-09-12 | 1982-03-27 | Nippon Electric Co | Cathode ray tube display unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140295Y2 (en) | 1986-11-18 |
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