JPS6138533Y2 - - Google Patents
Info
- Publication number
- JPS6138533Y2 JPS6138533Y2 JP14828483U JP14828483U JPS6138533Y2 JP S6138533 Y2 JPS6138533 Y2 JP S6138533Y2 JP 14828483 U JP14828483 U JP 14828483U JP 14828483 U JP14828483 U JP 14828483U JP S6138533 Y2 JPS6138533 Y2 JP S6138533Y2
- Authority
- JP
- Japan
- Prior art keywords
- presser foot
- upper feed
- rod
- swinging
- presser
- 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.)
- Expired
Links
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000009958 sewing Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 description 14
- 210000003127 knee Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
この考案は、上送りミシンにおける布押え足の
軽減装置に関する。[Detailed Description of the Invention] This invention relates to a device for reducing the presser foot in a top-feed sewing machine.
従来、第１〜第３図に示すように板バネ１によ
り常に下方へ押圧力を受けている押え足２と、主
軸に連動するリンク機構３による上下動と主軸に
連動する揺動杆４による揺動によつて四運動する
上送り歯５とを備えたミシンが知られている。そ
して上送り歯５と押え足２は第１，２図に示すよ
うに交互に上下動し、これらによつて布を送るよ
うになつている。 Conventionally, as shown in Figs. 1 to 3, the presser foot 2 is constantly subjected to a downward pressing force by a leaf spring 1, the vertical movement is caused by a link mechanism 3 that is linked to the main shaft, and the swinging rod 4 is linked to the main shaft. A sewing machine is known that is equipped with an upper feed dog 5 that moves four times by swinging. The upper feed dog 5 and presser foot 2 alternately move up and down as shown in FIGS. 1 and 2, thereby feeding the cloth.
しかしながら上送り歯５にはリンク機構３のガ
タ防止用のコイルスプリングＳの押圧が作用して
いるためひざ上げレバー（図示せず）を作動しこ
れに連結する押え上げレバー６を上昇して押え足
２を第３図のように上昇するとひざ上げレバーに
加わる荷重はコイルスプリングＳの弾性力Ｐと板
バネ１の両方の弾性力が加わり押え上げ時のひざ
上げレバーの操作力が大きくなり作業疲労が増大
するという欠点があつた。 However, since the upper feed dog 5 is pressed by the coil spring S for preventing backlash of the link mechanism 3, the knee lifter lever (not shown) is actuated, and the presser foot lifter lever 6 connected to this is raised to raise the presser foot. When the foot 2 is raised as shown in Fig. 3, the load applied to the knee-lifting lever is combined with the elastic force P of the coil spring S and the elastic force of the leaf spring 1, increasing the operating force of the knee-lifting lever when lifting the presser foot, which increases the work force. The disadvantage was that it increased fatigue.
この考案は、このような欠点を解消できる上送
りミシンにおける布押え足の押え上げ軽減装置を
提供するにある。 The object of this invention is to provide a device for reducing presser foot lift in a top-feed sewing machine, which can eliminate such drawbacks.
以下、この考案の一実施例を図面に基づいて説
明する。 An embodiment of this invention will be described below based on the drawings.
第４図〜第６図に於て、７は機枠（図示せず）
に上下動可能に支持した布押え棒で、先端には布
押え足８が設けてある。９は布押え棒７に固定し
た横杆９でこの横杆９に基端を機枠に固定した板
バネ部材よりなるバネ体１０の自由端が係合し常
に布押え棒７及び布押え足８を針板１１方向に移
動するように押圧している。 In Figures 4 to 6, 7 is the machine frame (not shown)
This is a presser foot supported vertically and movably, and a presser foot 8 is provided at the tip. Reference numeral 9 denotes a horizontal rod 9 fixed to the presser foot 7. The free end of a spring body 10, which is a plate spring member whose base end is fixed to the machine frame, is engaged with the horizontal rod 9 to constantly hold the presser foot 7 and the presser foot. 8 is pressed so as to move in the direction of the throat plate 11.
１２はミシンの主軸（図示せず）に連動して支
軸１３を中心に揺動する揺動杆である。１４は揺
動杆１２の下端に回動可能に支持した角駒でこの
角駒１４には先端に上送り歯１５を設けた上送り
棒１６が上下動可能に支持してある。 Reference numeral 12 denotes a swinging rod that swings around a support shaft 13 in conjunction with the main shaft (not shown) of the sewing machine. A square piece 14 is rotatably supported at the lower end of the swinging rod 12, and an upper feed rod 16 having an upper feed tooth 15 at its tip is supported on the square piece 14 so as to be movable up and down.
１７は下端を上送り棒１６内に遊嵌し上端を機
枠に接触した案内棒である。 Reference numeral 17 denotes a guide rod whose lower end is loosely fitted into the upper feed rod 16 and whose upper end is in contact with the machine frame.
１８は基端を布押え棒７に固定し、自由端に形
成した二又部１８ａを案内棒１７に遊嵌した係止
片で、この係止片１８と上送り棒１６の上端との
間には案内棒１７に巻回した圧縮バネ１９が介在
してある。 Reference numeral 18 denotes a locking piece whose base end is fixed to the presser rod 7, and a forked portion 18a formed at the free end is loosely fitted to the guide rod 17. Between this locking piece 18 and the upper end of the upper feed rod 16 A compression spring 19 wound around a guide rod 17 is interposed.
２０は主軸に連動して揺動可能に機枠に支持し
た揺動腕、２１は布押え棒７の上部に固定した支
持片で、この支持片２１にはＬ字状の回動リンク
２２がピン２３により回動可能に支持してあり、
この回動リンク２２の一端は前記揺動腕２０と第
一連結リンク２４により連結してある。 20 is a swinging arm supported on the machine frame so as to be able to swing in conjunction with the main shaft, 21 is a support piece fixed to the upper part of the presser foot bar 7, and this support piece 21 has an L-shaped rotation link 22. It is rotatably supported by a pin 23,
One end of this rotation link 22 is connected to the swing arm 20 by a first connection link 24.
２５は基端を上送り棒１６の上端に回動可能に
支持し、先端を回動リンク２２の他端とピン２５
Ａにより回動可能に支持した第二連結リンクであ
る。そして第１連結リンク２４と回動リンク２２
及び第二連結リンク２５とで揺動腕２０の揺動に
関連して布押え棒７と上送り棒１６とを交互に上
下動するリンク機構Ｌを構成する。 25 has a base end rotatably supported on the upper end of the upper feed rod 16, and a tip end connected to the other end of the rotation link 22 and the pin 25.
This is a second connecting link rotatably supported by A. And the first connecting link 24 and the rotation link 22
The second connecting link 25 constitutes a link mechanism L that alternately moves the presser rod 7 and the upper feed rod 16 up and down in association with the swinging of the swinging arm 20.
２６は一端を支持片２１の下面に配置し中間部
を機枠に回動可能に支持し他端をひざ上げレバー
（図示せず）に連結した押え上げレバーで、ひざ
上げレバーを移動することにより押え上げレバー
２６が上方に一方向移動して支持片２１を押し上
げこれにより布押え棒７が上昇し布押え足８が針
板１１上方に位置する。 Reference numeral 26 denotes a presser foot lifting lever having one end disposed on the lower surface of the support piece 21, a middle portion rotatably supported on the machine frame, and the other end connected to a knee lifting lever (not shown), which is used to move the knee lifting lever. As a result, the presser foot lifting lever 26 moves upward in one direction to push up the support piece 21, whereby the presser foot bar 7 rises and the presser foot 8 is positioned above the throat plate 11.
次にこの考案の作用を説明する。 Next, the operation of this invention will be explained.
第４図は布押え足８が下降し針板１１との間で
布を押圧している状態を示すものであるこの状態
からミシンを駆動すると揺動腕２０及び揺動杆１
２が主軸に連動して揺動する。 FIG. 4 shows a state in which the presser foot 8 is lowered and presses the cloth between it and the throat plate 11. When the sewing machine is driven from this state, the swinging arm 20 and the swinging rod 1
2 swings in conjunction with the main shaft.
まず、揺動腕２０が反時計方向に揺動すると第
１連結リンク２４を介して回動リンク２２をピン
２３を中心に時計方向に回動する。これにより上
送り棒１６が針板１１方向に下降し上送り歯１５
が第５図に示すように布を押圧する。上送り歯１
５が布を押圧すると回動リンク２２は今度はピン
２５Ａを中心として時計方向に回動するようにな
るため布押え棒７が上昇する。 First, when the swing arm 20 swings counterclockwise, the swing link 22 is rotated clockwise about the pin 23 via the first connecting link 24 . As a result, the upper feed rod 16 descends toward the throat plate 11 and the upper feed dog 15
presses the cloth as shown in FIG. Upper feed dog 1
5 presses the cloth, the rotary link 22 now rotates clockwise about the pin 25A, and the cloth presser rod 7 rises.
これと同時に揺動杆１２が左方向に揺動して上
送り棒１６を左方向に揺動するため上送り歯１５
は布を押圧した状態で布を左方向に送る。 At the same time, the swinging rod 12 swings to the left to swing the upper feed rod 16 to the left, so the upper feed dog 15
feeds the cloth to the left while pressing it.
続いて今度は揺動腕２０が反時計方向に揺動す
ると回動リンク２２もピン２５Ａを中心として反
時計方向に回動する。これにより布押え棒７が下
降して布を押圧する。 Subsequently, when the swing arm 20 swings counterclockwise, the swing link 22 also swings counterclockwise about the pin 25A. This causes the cloth presser bar 7 to descend and press the cloth.
布押え棒７が布を押圧すると今度は回動リンク
２２がピン２３を中心に反時計方向へ回動するた
め上送り棒１６が上昇して布を送らなくなる。 When the cloth presser rod 7 presses the cloth, the rotary link 22 rotates counterclockwise around the pin 23, causing the upper feed rod 16 to rise and stop feeding the cloth.
このように揺動腕２０の揺動により布押え足８
と上送り歯１５が交互に上下動すると共に揺動杆
１２の揺動によつて上送り歯１５が水平方向に揺
動するため上送り歯１５は下送り歯（図示せず）
と協働して布を送るように四運動し布を所定の方
向に移送する。 In this way, by swinging the swinging arm 20, the presser foot 8
The upper feed dog 15 alternately moves up and down, and the upper feed dog 15 swings in the horizontal direction due to the swing of the swing rod 12, so the upper feed dog 15 is moved up and down by the lower feed dog (not shown).
The cloth is moved in a predetermined direction by four motions in cooperation with the cloth.
布が送られ針によつて縫目が形成された後、布
押え足８を上昇するためにひざ上げレバーを移動
すると布押え棒７はバネ体１０の弾性力に抗して
上昇する。布押え棒７の上昇によつて支持片２１
が上昇しＬ字状の回動リンク２２も上昇するため
上送り棒１６が回動リンク２２に連結している第
二連結リンク２５によつて圧縮バネ１９の弾性力
に抗して上方に移動する。 After the cloth is fed and the stitches are formed by the needle, when the knee lifter lever is moved to raise the presser foot 8, the presser foot 7 rises against the elastic force of the spring body 10. As the presser rod 7 rises, the support piece 21
rises and the L-shaped rotating link 22 also rises, so the upper feed rod 16 moves upward against the elastic force of the compression spring 19 by the second connecting link 25 connected to the rotating link 22. do.
このためひざ上げレバーの操作力にはバネ体１
０の弾性力と圧縮バネ１９の弾性力P1が加わり操
作力が増大するが布押え棒７の上昇に伴つて係止
片１８が上昇するためこの圧縮バネ１９の弾性力
P1は従来の弾性力Ｐに比較してＰ＞P1となりひざ
上げレバーの操作力が減少することになる。 For this reason, the operating force of the knee-raiser lever requires only one spring body.
0 and the elastic force P 1 of the compression spring 19 are added, and the operating force increases, but as the presser foot bar 7 rises, the locking piece 18 rises, so the elastic force of the compression spring 19 increases.
Compared to the conventional elastic force P, P1 becomes P> P1, which means that the operating force of the knee-raising lever is reduced.
以上述べたように、この考案によれば上送り棒
に作用する圧縮バネは上送り棒の上端と布押え棒
に固定した係止片との間に介在してあるので押え
上げレバーを作動して布押え足、上送り歯を上昇
させても布押え足の上昇に伴つて係止片も上昇す
るため従来に比べて圧縮バネが上送り歯の上昇に
よつて縮まる率が少なくなり圧縮バネの弾性力が
弱くなる。このため押え上げレバーの作動力が減
少しひざ上げレバーの操作力が軽減でき作業者の
疲労を著しく減少することができるという効果が
ある。 As described above, according to this invention, the compression spring that acts on the upper feed rod is interposed between the upper end of the upper feed rod and the locking piece fixed to the presser foot rod, so that it does not actuate the presser foot lifting lever. Even if the presser foot and upper feed dog are raised, the locking piece also rises as the presser foot rises, so the compression spring is less likely to contract as the upper feed dog rises than in the past. The elastic force of becomes weaker. Therefore, the operating force of the presser foot lifting lever is reduced, and the operating force of the knee lifting lever is also reduced, which has the effect of significantly reducing worker fatigue.
第１図〜第３図は従来の押え上げ軽減装置の一
部断面図、第４図〜第６図はこの考案に係る押え
上げ軽減装置の一実施例を示す一部断面正面図で
ある。
７……布押え棒、８………布押え足、１０……
バネ体、１２……揺動杆、１６……上送り棒、１
８……係止片、１９……圧縮バネ、２０……揺動
腕、２６……押え上げレバー、Ｌ……リンク機
構。
1 to 3 are partially sectional views of a conventional presser foot lifting reducing device, and FIGS. 4 to 6 are partially sectional front views showing an embodiment of the presser foot lifting reducing device according to this invention. 7... Presser foot bar, 8... Presser foot, 10...
Spring body, 12... Swinging rod, 16... Upper feed rod, 1
8... Locking piece, 19... Compression spring, 20... Rocking arm, 26... Presser foot lifting lever, L... Link mechanism.
Claims (1)
針板に移動する方向に作用力を受け、先端に布押
え足を設けた布押え棒と、 主軸に連動して揺動する揺動杆に上下動可能に
支持し先端に四運動する上送り歯を設けた上送り
棒と、 主軸に連動して揺動する揺動腕と、 揺動腕と布押え棒及び上送り棒とに連結し揺動
腕の揺動に関連して布押え棒と上送り棒とを交互
に上下動するリンク機構と、 布押え棒に固定した係止片と、 係止片と上送り棒との間に介在した圧縮バネ
と、 布押え棒を係合し一方向移動により布押え棒を
上昇する押え上げレバーと、 よりなる上送りミシンにおける布押え足の押え上
げ軽減装置。[Scope of Claim for Utility Model Registration] A presser foot that is supported on the machine frame so as to be movable up and down, always receives a force applied by a spring body in the direction of movement toward the throat plate, and has a presser foot at its tip, and is interlocked with the main shaft. The upper feed rod is supported so as to be able to move up and down, and is equipped with upper feed teeth that move in four directions at its tip; the swing arm that swings in conjunction with the main shaft; the swing arm and the presser foot. a link mechanism connected to the bar and the upper feed rod and which alternately moves the presser foot rod and the upper feed rod up and down in relation to the swinging of the swinging arm; a locking piece fixed to the presser foot rod; A compression spring interposed between the piece and the upper feed rod, a presser foot lifting lever that engages the presser foot and moves in one direction to raise the presser foot, and the presser foot is reduced in lifting of the presser foot in the upper feed sewing machine. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14828483U JPS6057366U (en) | 1983-09-26 | 1983-09-26 | Presser foot lift reduction device for presser foot in top feed sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14828483U JPS6057366U (en) | 1983-09-26 | 1983-09-26 | Presser foot lift reduction device for presser foot in top feed sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6057366U JPS6057366U (en) | 1985-04-22 |
| JPS6138533Y2 true JPS6138533Y2 (en) | 1986-11-06 |
Family
ID=30329498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14828483U Granted JPS6057366U (en) | 1983-09-26 | 1983-09-26 | Presser foot lift reduction device for presser foot in top feed sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057366U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0815513B2 (en) * | 1988-11-30 | 1996-02-21 | 株式会社ボンニー | Vertical feed lockstitch machine and puckering prevention method for vertical feed lockstitch machine |
-
1983
- 1983-09-26 JP JP14828483U patent/JPS6057366U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6057366U (en) | 1985-04-22 |
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