JPS61137389U - - Google Patents
Info
- Publication number
- JPS61137389U JPS61137389U JP2168885U JP2168885U JPS61137389U JP S61137389 U JPS61137389 U JP S61137389U JP 2168885 U JP2168885 U JP 2168885U JP 2168885 U JP2168885 U JP 2168885U JP S61137389 U JPS61137389 U JP S61137389U
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- bobbin thread
- sewing machine
- thread
- pair
- 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.)
- Pending
Links
- 238000009958 sewing Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第１図ａ，ｂは本考案の実施例における下糸ボ
ビンの正面図、第２図ａ，ｂは第１図ｂの―
線による環状溝の二例を示す断面図、第３図はａ
，ｂはこの実施例のボビンと従来のボビンとの透
孔の形状による出力電圧の波形の相違を示す特性
図、第４図は円弧状長孔の形状を説明する正面図
、第５図は下糸残量検出装置を一部断面して示す
平面図、第６図は第９図の―線による断面図
、第７図Ａ，Ｂ，Ｃ，Ｄは下糸ボビンの正面図、
第８図は下糸残量と出力電圧との関連を示す特性
図、第９図は下糸残量検出装置を備えたミシンの
表示用発光ダイオードの取付位置を示す正面図で
ある。
６……外釜、８……下糸、１１……発光ダイオ
ード、１２……ホトトランジスタ、１４……内釜
、１６……下糸ボビン、１６ａ……軸部、１６ｂ
……鍔部、１７……円弧状長孔、Ｒ……収納部、
Ｓ……センサー。
Figures 1a and b are front views of the bobbin thread bobbin in the embodiment of the present invention, and Figures 2a and b are the same as in Figure 1b.
A sectional view showing two examples of annular grooves formed by lines, FIG.
, b are characteristic diagrams showing the difference in the waveform of the output voltage depending on the shape of the through hole between the bobbin of this embodiment and the conventional bobbin, FIG. 4 is a front view illustrating the shape of the arcuate long hole, and FIG. A partially sectional plan view of the bobbin thread remaining amount detection device, FIG. 6 is a sectional view taken along the line - in FIG. 9, and FIGS. 7 A, B, C, and D are front views of the bobbin thread bobbin.
FIG. 8 is a characteristic diagram showing the relationship between the remaining amount of bobbin thread and the output voltage, and FIG. 9 is a front view showing the mounting position of the display light emitting diode of the sewing machine equipped with the remaining amount of bobbin thread detecting device. 6... Outer hook, 8... Lower thread, 11... Light emitting diode, 12... Phototransistor, 14... Inner hook, 16... Lower thread bobbin, 16a... Shaft, 16b
...Flame part, 17...Circular long hole, R...Storage part,
S...Sensor.
Claims (1)
釜に相対回転可能に装着された内釜と、その内釜
中に形成された収納部に着脱可能で、下糸が巻装
される軸部及びその両側の一対の鍔部からなる下
糸ボビンとを備え、前記一対の鍔部に穿設される
透孔に下糸の一端を挿通して係止し、下糸ボビン
に下糸を巻装するミシンにおいて、 前記透孔が前記一対の鍔部上に互いに対向して
それぞれ位置すると共に、その透孔が前記下糸ボ
ビンの軸部を中心とする円弧状にて、各鍔部に複
数形成され、 前記下糸ボビンに巻装された下糸の残量を検出
するために前記透孔に向つて光を放射する発光部
とその発光部からの光を受ける受光部とからなる
検出器がミシン機枠に固着されたことを特徴とす
るミシンの下糸残量検出装置。[Claim for Utility Model Registration] An outer hook that rotates in synchronization with the main shaft of the sewing machine, an inner hook that is attached to the outer hook so that it can rotate relative to the outer hook, and a storage section formed in the inner hook that is removable. The bobbin thread is provided with a shaft portion on which the bobbin thread is wound and a bobbin thread bobbin consisting of a pair of flanges on both sides of the shaft portion, and one end of the bobbin thread is inserted through a through hole formed in the pair of flanges and is locked therein. , in a sewing machine that winds a bobbin thread around a bobbin thread bobbin, the through holes are located on the pair of flanges facing each other, and the through holes form a circle centered on the shaft of the bobbin thread bobbin. A plurality of light emitting parts are formed in each collar part in an arc shape and emit light toward the through hole in order to detect the remaining amount of bobbin thread wound on the bobbin thread bobbin, and light emitted from the light emitting part. 1. A bobbin thread remaining amount detection device for a sewing machine, characterized in that a detector comprising a light receiving section and a light receiving section is fixed to a sewing machine frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168885U JPS61137389U (en) | 1985-02-18 | 1985-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168885U JPS61137389U (en) | 1985-02-18 | 1985-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61137389U true JPS61137389U (en) | 1986-08-26 |
Family
ID=30513308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2168885U Pending JPS61137389U (en) | 1985-02-18 | 1985-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61137389U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210525U (en) * | 1975-07-11 | 1977-01-25 |
-
1985
- 1985-02-18 JP JP2168885U patent/JPS61137389U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210525U (en) * | 1975-07-11 | 1977-01-25 |
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