JPS627985U - - Google Patents
Info
- Publication number
- JPS627985U JPS627985U JP9957985U JP9957985U JPS627985U JP S627985 U JPS627985 U JP S627985U JP 9957985 U JP9957985 U JP 9957985U JP 9957985 U JP9957985 U JP 9957985U JP S627985 U JPS627985 U JP S627985U
- Authority
- JP
- Japan
- Prior art keywords
- upper feed
- swinging member
- sewing machine
- shaped link
- feed dog
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第１図は、本考案によるＬ字形リンクの形状の
一実施例を示す平面図、第２図および第３図は、
従来の上送り機構の改善提案例の概要構成正面図
とその要部破断側面図、第４図ないし第７図は従
来例の問題点の各説明図、第８図ないし第１１図
は本実施例の各工程における状態図、第１２図は
、上送り歯移動量対上下ピン移動量特性線図であ
る。
７……上送り歯（押え）、１７……布押え足、
１８……押え棒、２３……第１揺動部材、２４…
…ミシン機枠（フレーム）、３５……第２揺動部
材、３５ａ……係止片（ピン部）、３６……Ｌ字
形リンク（上下押し腕）、４４……ピン、５２…
…針棒、Ａ１／Ａ３……針棒上／下死点位置にお
ける係止片ピン中心。
FIG. 1 is a plan view showing an example of the shape of the L-shaped link according to the present invention, and FIGS. 2 and 3 are
A schematic front view and a cutaway side view of the main parts of an example of a proposed improvement of the conventional upper feed mechanism, Figures 4 to 7 are explanatory diagrams of problems in the conventional example, and Figures 8 to 11 are diagrams of the present implementation. FIG. 12, which is a state diagram for each process in the example, is a characteristic diagram of the upper feed dog movement amount versus the upper and lower pin movement amount. 7... Upper feed dog (presser foot), 17... Presser foot,
18... Presser bar, 23... First swinging member, 24...
... Sewing machine frame (frame), 35 ... second swinging member, 35a ... locking piece (pin part), 36 ... L-shaped link (up and down push arm), 44 ... pin, 52 ...
...Needle bar, A1/A3... Center of the locking piece pin at the top/bottom dead center position of the needle bar.
Claims (1)
材とを備え、該第２揺動部材の係止片をＬ字形リ
ンクに係合させてピンを介して押え棒を上昇／下
降させることにより、上送り歯を駆動する上送り
機構において、 前記係止片に接触係合する前記Ｌ字形リンクの
カム輪郭形状を、針棒上死点位置においては実質
的に垂直方向とし、かつ、針棒下死点位置にあつ
て前記上送り歯を所定量上昇させたときに、前記
Ｌ字形リンクの傾動角度が実質的に変動しないよ
うな形状に構成したことを特徴とするミシンの上
送り駆動機構。[Claims for Utility Model Registration] A first swinging member and a second swinging member are provided in the machine frame of the sewing machine, and a locking piece of the second swinging member is engaged with an L-shaped link to pin the sewing machine. In an upper feed mechanism that drives an upper feed dog by raising/lowering a presser bar through is in a substantially vertical direction, and is configured in such a shape that the tilt angle of the L-shaped link does not substantially change when the upper feed dog is raised by a predetermined amount when the needle bar is at the bottom dead center position. The upper feed drive mechanism of a sewing machine is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957985U JPH0111177Y2 (en) | 1985-06-29 | 1985-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957985U JPH0111177Y2 (en) | 1985-06-29 | 1985-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS627985U true JPS627985U (en) | 1987-01-17 |
| JPH0111177Y2 JPH0111177Y2 (en) | 1989-03-31 |
Family
ID=30968585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9957985U Expired JPH0111177Y2 (en) | 1985-06-29 | 1985-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0111177Y2 (en) |
-
1985
- 1985-06-29 JP JP9957985U patent/JPH0111177Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0111177Y2 (en) | 1989-03-31 |
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