JPH0436982U - - Google Patents
Info
- Publication number
- JPH0436982U JPH0436982U JP7895590U JP7895590U JPH0436982U JP H0436982 U JPH0436982 U JP H0436982U JP 7895590 U JP7895590 U JP 7895590U JP 7895590 U JP7895590 U JP 7895590U JP H0436982 U JPH0436982 U JP H0436982U
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- sewing machine
- winding amount
- thread winding
- bobbin thread
- 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 5
- 238000004804 winding Methods 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第１図はボビンケースに本考案によるボビンを
挿入した状態の正面図、第２図は本考案の実施状
態図で釜、ボビンケース、ボビンは断面図で示す
。第３図は本考案によるボビンの正面図である。
１……外釜、２……内釜、３……下糸、４……
ボビン、４ｂ……光通過窓、４ｃ……反射面、５
……ボビンケース、６……ラツチ装置、１０……
光電スイツチ、１０ａ……投射光線、１０ｂ……
反射光線、１０ｃ……投射レンズ、１０ｄ……受
光レンズ。
FIG. 1 is a front view of a bobbin according to the present invention inserted into a bobbin case, and FIG. 2 is a diagram showing the state of implementation of the present invention, showing the hook, bobbin case, and bobbin in a sectional view. FIG. 3 is a front view of the bobbin according to the present invention. 1...outer hook, 2...inner hook, 3...bobbin thread, 4...
Bobbin, 4b...Light passing window, 4c...Reflection surface, 5
...Bobbin case, 6...Latch device, 10...
Photoelectric switch, 10a... Projection light beam, 10b...
Reflected light beam, 10c...projection lens, 10d...light receiving lens.
Claims (1)
検知装置に於て、光電スイツチを釜の正面側に於
て、光線の投射角度及び受光角度が釜の回転軸に
対して斜めになるような位置に取り付けたことを
特徴とするミシンの下糸巻量検知装置。 (2) ボビンケース内部への投射光線の入口及び
ボビンケース内部からの反射光線の出口は共にラ
ツチカム６ｂが作用するボビンケース底部に設け
られている窓５ａとすることを特徴とした請求項
第１項記載のミシンの下糸巻量検知装置。 (3) 下糸を捲回するボビンには少なくとも一方
のフランジに少なくとも１箇所の光通過窓４ｂを
設け、ボビンの軸の外周の軸方向中央部には断面
形状が二等辺三角形になるように形成された帯状
突起からなる反射面４ｃ，４ｄを設けたことを特
徴とする請求項第１項記載のミシンの下糸巻量検
知装置。[Scope of Claim for Utility Model Registration] (1) In a bobbin thread winding amount detection device for a sewing machine using a photoelectric switch, when the photoelectric switch is placed on the front side of the hook, the projection angle and the receiving angle of the light beam are adjusted to the rotation axis of the hook. A bobbin thread winding amount detection device for a sewing machine is characterized in that it is installed in a position diagonal to the sewing machine. (2) Claim 1, characterized in that both the entrance of the projected light beam into the bobbin case and the exit of the reflected light beam from the inside of the bobbin case are windows 5a provided at the bottom of the bobbin case on which the latch cam 6b acts. A bobbin thread winding amount detection device for a sewing machine as described in . (3) At least one light passing window 4b is provided on at least one flange of the bobbin on which the bobbin thread is wound, and the cross-sectional shape is an isosceles triangle at the axial center of the outer periphery of the bobbin shaft. 2. The bobbin thread winding amount detecting device for a sewing machine according to claim 1, further comprising reflecting surfaces (4c, 4d) formed of band-shaped protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7895590U JPH0436982U (en) | 1990-07-25 | 1990-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7895590U JPH0436982U (en) | 1990-07-25 | 1990-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0436982U true JPH0436982U (en) | 1992-03-27 |
Family
ID=31622687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7895590U Pending JPH0436982U (en) | 1990-07-25 | 1990-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436982U (en) |
-
1990
- 1990-07-25 JP JP7895590U patent/JPH0436982U/ja active Pending
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