JPH0298873U - - Google Patents
Info
- Publication number
- JPH0298873U JPH0298873U JP574189U JP574189U JPH0298873U JP H0298873 U JPH0298873 U JP H0298873U JP 574189 U JP574189 U JP 574189U JP 574189 U JP574189 U JP 574189U JP H0298873 U JPH0298873 U JP H0298873U
- Authority
- JP
- Japan
- Prior art keywords
- thread
- needle
- bobbin thread
- movable knife
- standby position
- 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
- 238000009958 sewing Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
図は本考案の一実施例を示すもので、第１図は
糸切断装置を含むミシンの要部の平面図、第２図
は第１図の−線断面図、第３図は作動位置に
おける下糸掛け片と動メスの先端部との協働関係
を示す第１図の要部の平面図、第４図は動メスを
その動力伝達機構とともに示した平面図、第５図
は下糸掛け片を駆動するソレノイドを保持するブ
ラケツトの斜視図、第６図〜第９図は糸切断機構
及びピツカーの動きを上糸及び下糸に関連して示
した要部の斜視図、第１０図は糸切断装置のタイ
ミングチヤート、第１１図は待機位置における下
糸掛け片と動メスとの関係を示す斜視図である。
１０……糸切断機構、１３……針板、３０……
釜、３４……針穴、４４……動メス、４４ａ……
切断刃、４４ｂ……上糸係止溝（上糸係止部）、
４４ｄ……突部（下糸係止部）、６８……下糸掛
け片、Ｔ１……上糸、Ｔ２……下糸、Ｔ１ａ……
針側上糸、Ｔ１ｂ……布側上糸。
The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of the main parts of the sewing machine including the thread cutting device, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is in the operating position. Fig. 1 is a plan view of the main parts showing the cooperative relationship between the bobbin thread hanging piece and the tip of the moving knife, Fig. 4 is a plan view showing the moving knife together with its power transmission mechanism, and Fig. 5 is a plan view of the main parts of the bobbin thread hooking piece and the tip of the moving knife. A perspective view of the bracket that holds the solenoid that drives the hanging piece; FIGS. 6 to 9 are perspective views of essential parts showing the movement of the thread cutting mechanism and picker in relation to the upper and lower threads; FIG. 10 11 is a timing chart of the thread cutting device, and FIG. 11 is a perspective view showing the relationship between the bobbin thread hooking piece and the movable knife in the standby position. 10... Thread cutting mechanism, 13... Throat plate, 30...
Pot, 34...needle hole, 44...moving knife, 44a...
Cutting blade, 44b...needle thread locking groove (needle thread locking part),
44d... Protrusion (lower thread locking part), 68... Lower thread hanging piece, T1... Needle thread, T2... Lower thread, T1a...
Needle side upper thread, T1b...Fabric side upper thread.
Claims (1)
れる下糸と、前記針穴を通じて前記釜に向け上下
動する針から送り出される上糸とにより縫いを施
すようにしたミシンにおいて、前記針板の下方に
は待機位置より揺動位置へ、さらにこの揺動位置
より切断位置へ移動可能な動メスを設け、この動
メスは前記揺動位置に向かう移動方向に関し前方
の側に針側上糸係止部をまた後方の側に切断刃を
有し、前記待機位置より前記揺動位置への移動時
に前記針穴と前記釜との間に存在する布側上糸と
下糸を前記切断刃側にまた針側上糸を前記針側上
糸係止部側にそれぞれ分けるように構成した糸切
断装置であつて、前記動メスの先端部には前記待
機位置より前記揺動位置への移動時に下糸のみを
係止してその前記切断刃への移行を規制する下糸
係止部を設け、一方前記針板の下方には前記動メ
スに近接して下糸掛け片を設け、この下糸掛け片
は前記動メスの前記待機位置より前記揺動位置へ
の移動時に前記動メスの前記下糸係止部と協働し
て下糸の前記切断刃への移行を可能とする作動位
置と、下糸に干渉しない待機位置とに移動可能に
構成したことを特徴とするミシンにおける糸切断
装置。 In a sewing machine that performs sewing using a bobbin thread sent out from a hook provided below a needle hole in the throat plate, and an upper thread fed out from a needle that moves up and down toward the hook through the needle hole, A movable knife that can be moved from the standby position to the swinging position and from the swinging position to the cutting position is provided below. The locking part also has a cutting blade on the rear side, and when moving from the standby position to the swinging position, the cutting blade cuts the upper thread and bobbin thread on the fabric side existing between the needle hole and the hook. The thread cutting device is configured to separate the needle-side needle thread to the needle-side needle thread locking portion side, and the movable knife has a distal end portion that moves from the standby position to the swinging position. At times, a bobbin thread locking portion is provided that locks only the bobbin thread and restricts its transfer to the cutting blade, while a bobbin thread hooking piece is provided below the throat plate adjacent to the movable knife. The bobbin thread hooking piece cooperates with the bobbin thread locking portion of the movable knife when the movable knife is moved from the standby position to the swinging position to allow the bobbin thread to move to the cutting blade. A thread cutting device for a sewing machine, characterized in that it is configured to be movable between a position and a standby position that does not interfere with the bobbin thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP574189U JPH0538709Y2 (en) | 1989-01-20 | 1989-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP574189U JPH0538709Y2 (en) | 1989-01-20 | 1989-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0298873U true JPH0298873U (en) | 1990-08-07 |
| JPH0538709Y2 JPH0538709Y2 (en) | 1993-09-30 |
Family
ID=31209372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP574189U Expired - Lifetime JPH0538709Y2 (en) | 1989-01-20 | 1989-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538709Y2 (en) |
-
1989
- 1989-01-20 JP JP574189U patent/JPH0538709Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0538709Y2 (en) | 1993-09-30 |
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