JPH0111178Y2 - - Google Patents
Info
- Publication number
- JPH0111178Y2 JPH0111178Y2 JP1984093930U JP9393084U JPH0111178Y2 JP H0111178 Y2 JPH0111178 Y2 JP H0111178Y2 JP 1984093930 U JP1984093930 U JP 1984093930U JP 9393084 U JP9393084 U JP 9393084U JP H0111178 Y2 JPH0111178 Y2 JP H0111178Y2
- Authority
- JP
- Japan
- Prior art keywords
- feed
- vertical
- cam
- arm
- switching lever
- 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
- 238000009958 sewing Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
(考案の対象)
本考案は、ミシンの送り歯沈下装置に関するも
のである。[Detailed description of the invention] [Purpose of the invention] (Object of the invention) The present invention relates to a feed dog sinking device for a sewing machine.
(考案の利用分野)
本考案の技術はミシンに限らず、一般小型機械
器具における、作動部分の位置変換手段として利
用することができる。(Field of Application of the Invention) The technology of the present invention can be used not only in sewing machines but also as means for changing the position of operating parts in general small mechanical devices.
(従来技術)
従来、ミシンの送り歯沈下装置として、実公昭
55−25892号が知られている。(Prior art) Conventionally, as a feed dog sinking device for sewing machines, the
No. 55-25892 is known.
以下、この技術について第7図を参照し説明す
る。図において、31は、カム軸32上の図示せ
ぬ水平送りカム等を介し前後揺動する送り台、3
3は前記送り台31に固着された送り歯で、図で
は該送り歯33が針板34の上面に浮上した状態
を示す。35は、釜駆動軸36上の回動可能な作
動腕で、該作動腕35は、前記釜駆動軸36から
ギヤー駆動される。前記カム軸32上の上下送り
カム37上面に当接する。38は切換腕で、軸3
9により前記作動腕35の先端部に枢着され、こ
の両者は釜駆動軸36を中心に上下揺動する。 This technique will be explained below with reference to FIG. In the figure, 31 is a feed base that swings back and forth via a horizontal feed cam (not shown) on a camshaft 32;
Reference numeral 3 denotes a feed dog fixed to the feed base 31, and the figure shows a state in which the feed dog 33 is floating above the upper surface of the throat plate 34. 35 is a rotatable operating arm on the hook driving shaft 36, and the operating arm 35 is driven by a gear from the hook driving shaft 36. It comes into contact with the upper surface of the vertical feed cam 37 on the camshaft 32. 38 is a switching arm, and axis 3
9 is pivotally attached to the distal end of the operating arm 35, and both of them swing up and down about the shuttle drive shaft 36.
40は、切換腕38に支持されたコロで、図示
ではコロ40上に前記送り台31の下方突出部3
1aが当接している。この状態で釜駆動軸36が
回転すると、送り歯33は針板34上面より出没
し、公知の送り運動を行う。 Reference numeral 40 denotes a roller supported by the switching arm 38, and in the illustration, the downward protrusion 3 of the feed table 31 is placed on the roller 40.
1a is in contact with it. When the shuttle drive shaft 36 rotates in this state, the feed dog 33 protrudes and retracts from the upper surface of the throat plate 34, performing a known feeding motion.
本技術において、刺しゆう縫等のため送り歯3
3を沈下させるには、開閉板41を開いて前記切
換腕38の上方操作部38aを押圧する。そし
て、コロ40を二点鎖線示(図示左下方)に位置
させる。ここで係入ピン42が保持部43の凹部
44b内に係入し、前記した位置が保持される。 In this technology, the feed dog 3 is used for stitching etc.
3, open the opening/closing plate 41 and press the upper operating portion 38a of the switching arm 38. Then, the roller 40 is positioned as indicated by the two-dot chain line (lower left in the figure). Here, the engagement pin 42 engages in the recess 44b of the holding portion 43, and the above-described position is maintained.
このため、コロ40に接した送り台31の突出
部31aも、図示せぬスプリングの付勢により下
降し、送り歯33は針板34の下方に沈下する。 Therefore, the protruding portion 31a of the feed base 31 in contact with the roller 40 also moves down due to the bias of a spring (not shown), and the feed dog 33 sinks below the throat plate 34.
送り歯33を再び浮上させるには、前記とは逆
に切換腕38の下方操作部38bを押圧して、図
示状態に復帰させるものである。 In order to float the feed dog 33 again, the lower operating portion 38b of the switching arm 38 is pressed in the opposite manner to the above to return it to the state shown.
(考案が解決しようとする問題点)
上記従来技術の送り歯沈下、浮上切換操作で
は、送り歯を沈下させるときは、切換腕の比較的
軽い押圧操作で行い得るが、これを上昇させると
きは、押えの圧力に抗して切換えるため、操作が
重いという不具合な問題点があつた。(Problems to be Solved by the Invention) In the feed dog sinking and floating switching operation of the above-mentioned conventional technology, when the feed dog is sunk, it can be done by a relatively light pressing operation of the switching arm, but when it is raised, However, since the switch was made against the pressure of the presser foot, it was difficult to operate.
本考案では、上記問題点を解決し、送り歯の沈
下及び上昇の切換操作性向上を計つたものであ
る。 The present invention solves the above problems and improves the operability of switching between sinking and raising the feed dog.
(問題点を解決するための手段)
本考案における解決手段では、釜軸上に固定さ
れる上下送りカムをして、上下送りカム面と該カ
ム面の最小径部と等しい真円カム面の重合二層構
成となし、常時バネ圧で一方向に付勢される上下
送り腕の一端が、切換レバー手段で、前記二層の
カム面のいずれか一方を選択してこれを係止する
ようにした。そして前記付勢バネの圧縮力を利用
して、送り歯の上昇切換えを行うようにしたもの
である。
(Means for Solving the Problem) The solution in the present invention is to use a vertical feed cam fixed on the rotary hook shaft so that the vertical feed cam surface and the perfect circular cam surface equal to the minimum diameter part of the cam surface. It has a superimposed two-layer structure, and one end of the vertical feed arm, which is always biased in one direction by spring pressure, selects and locks one of the two-layer cam surfaces using a switching lever means. I made it. The compressive force of the biasing spring is used to switch the feed dog upward.
(作用)
上記構成手段の作用を添付第1〜6図にもとづ
いて説明する。(Function) The function of the above-mentioned constituent means will be explained based on the attached FIGS. 1 to 6.
即ち、切換レバー19を第1図に示す状態にし
てミシンを回転すると、図示せぬ送り調節装置の
運動が水平送り軸6、送り台9を介し送り歯10
に前後の往復運動を与える。一方釜軸1も揺動回
転し、上下送りカム面5aで上下送り作用腕12
を作用腕軸11を中心とした揺動運動を行なわ
せ、上下送り作用腕12の折曲部12cに固定し
た調節ネジ15を介し、送り台9を送り台軸8を
中心とした揺動運動をさせる。従つて、送り台1
0は上下動し、針板25上面に出没する。この前
後動により、送り公知の送り運動を行う。 That is, when the sewing machine is rotated with the switching lever 19 in the state shown in FIG.
gives a back and forth reciprocating motion. On the other hand, the hook shaft 1 also swings and rotates, and the vertical feed action arm 12 is operated by the vertical feed cam surface 5a.
The feed table 9 is caused to perform a swinging motion about the working arm shaft 11, and the feed table 9 is made to perform a swinging movement about the feed table shaft 8 through the adjusting screw 15 fixed to the bent portion 12c of the vertical feed working arm 12. make them do Therefore, feed base 1
0 moves up and down and appears and disappears on the upper surface of the throat plate 25. This back and forth movement performs a known feeding motion.
刺しゆう縫等のために送り歯10を針板25下
方へ沈下させるには、第1図に於いて切換レバー
19を時計方向に回転させる。すると窓穴22の
側面22aがピン13に当接し、上下送り作用腕
12は圧縮バネ18に抗して左に移動し、片又部
12aが上下送りカム5の真円カム部5bと、相
対すると、第3図の二点鎖線で示す位置まで片又
部12aと上下送り作用腕12を引張力で回動さ
せる。従つて、送り歯10は針板25の下方に沈
下する。尚この状態で切換レバー19の係止凹部
19bに鋼球23が係止し、該切換レバー19
は、係止されることになる。 To lower the feed dog 10 below the throat plate 25 for stitching or the like, the switching lever 19 is rotated clockwise in FIG. 1. Then, the side surface 22a of the window hole 22 comes into contact with the pin 13, the vertical feed action arm 12 moves to the left against the compression spring 18, and the pronged portion 12a is moved relative to the perfect circular cam portion 5b of the vertical feed cam 5. Then, the pronged portion 12a and the vertical feeding arm 12 are rotated by tensile force to the position shown by the two-dot chain line in FIG. Therefore, the feed dog 10 sinks below the throat plate 25. In this state, the steel ball 23 is locked in the locking recess 19b of the switching lever 19, and the switching lever 19 is locked.
will be locked.
ここで、送り歯10の沈下状態から通常の縫を
行う場合は、第1図に示す位置まで切換レバー1
9を回転さすが、この時該切換レバー19に適宜
に設けた窓穴22が上下送り腕12のピン13に
は当接することなく、圧縮バネ24に抗した軽い
力で、切換えの操作ができる。上下送り作動腕1
2はミシン一回転中に、その片又部12aが上下
送りカム5aの最小径部と相対した位相で、圧縮
バネ18の圧力によりEリング17に当接するま
で移動し、通常の縫が可能となる。よつて、送り
歯10に作用している押え圧力になんら関係な
く、切換レバー19による送り歯10の上昇切換
操作が可能となる。 When performing normal sewing from the depressed state of the feed dog 10, move the switching lever to the position shown in FIG.
9 is rotated, but at this time, the window hole 22 appropriately provided in the switching lever 19 does not come into contact with the pin 13 of the vertical feed arm 12, and the switching operation can be performed with a light force against the compression spring 24. Vertical feed operation arm 1
2, during one rotation of the sewing machine, the pronged portion 12a moves in a phase opposite to the minimum diameter portion of the vertical feed cam 5a until it comes into contact with the E-ring 17 due to the pressure of the compression spring 18, and normal sewing is possible. Become. Therefore, regardless of the presser pressure acting on the feed dog 10, the switching lever 19 can be used to switch the feed dog 10 upward.
(実施例)
以下、本考案の実施例を、添付各図により説明
する。(Example) Examples of the present invention will be described below with reference to the attached drawings.
図中1はミシンのフリーアーム2内に回転可能
に設けられた釜軸で、その一端には、ベベルギヤ
ー3,4を介して釜(図示省略)が取付られ、又
釜軸1には、上下送りカム5が固着されている。
そして、上下送りカム5には、カム5aとカム5
aの最小径部と等しい真円カム5bが形成されて
いる。 In the figure, reference numeral 1 denotes a hook shaft rotatably provided in a free arm 2 of the sewing machine.A hook (not shown) is attached to one end of the hook via bevel gears 3 and 4. A feed cam 5 is fixed.
The vertical feed cam 5 includes a cam 5a and a cam 5.
A perfect circular cam 5b is formed which is equal to the minimum diameter portion of a.
6は水平送り軸で、両端をペンセンタ7にて回
転可能に支持され、腕6a,6bに送り台軸8が
固着されている。9は送り歯10が固着された送
り台で、前記送り台軸8に回転可能に支承されて
いる。又前記水平送り軸6の他端には、図示せぬ
水平送り腕が二又を介し送り調節器に連結し、送
り調節器の傾斜角度を変えることにより、送り歯
10に前後に往復運動を与えている。 A horizontal feed shaft 6 is rotatably supported at both ends by a pen center 7, and a feed shaft 8 is fixed to arms 6a and 6b. Reference numeral 9 denotes a feed base to which a feed dog 10 is fixed, and is rotatably supported on the feed base shaft 8. Further, at the other end of the horizontal feed shaft 6, a horizontal feed arm (not shown) is connected to a feed adjuster via a fork, and by changing the inclination angle of the feed adjuster, the feed dog 10 is given back and forth reciprocating motion. giving.
11は、フリーアーム2内に固着された作用腕
軸で、上下送り作用腕12が回転可能に支承され
ている。該上下送り作用腕12には、前記上下送
りカム5にその片又部12aが当接するように、
引張バネ14がフツク12bと送り台9との間に
調節されている。又折曲部12cには調節ネジ1
5がナツト16により固着されている。調節ネジ
15の頭部15aは前記引張バネ14の張力で送
り台9の9a部に当接している。 Reference numeral 11 denotes a working arm shaft fixed within the free arm 2, on which a vertical feed working arm 12 is rotatably supported. The vertical feed action arm 12 is provided with a protrusion such that its pronged portion 12a abuts against the vertical feed cam 5.
A tension spring 14 is adjusted between the hook 12b and the carriage 9. Also, an adjustment screw 1 is attached to the bent portion 12c.
5 is fixed by a nut 16. The head 15a of the adjusting screw 15 is brought into contact with the portion 9a of the feed base 9 under the tension of the tension spring 14.
又上下送り腕12のプツシユ12dにはピン1
3が固着されている。 Also, pin 1 is attached to the pusher 12d of the vertical feed arm 12.
3 is fixed.
前記作用腕軸11上の適宜な位置にはEリング
17が取付けられ、該Eリング17に上下送り作
用腕12が当接するように、圧縮バネ18が同軸
11上にもうけられる。この状態で片又部12a
がカム5aと相対し、第3図に示すように、送り
歯10が針板26より上方に突出することとな
る。19は、フリーアーム2に取付られたベツド
カバー20のボス20aに、回転可能に支承され
た切換レバーで、ネジ21とナツト25により軸
方向の摺動が規制される。前記切換レバー19に
は下面を係止凹部19a,19bが設けられ、こ
の係止凹部のいずれか一方に、常時ベツドカバー
20の穴20b内に配備した前記圧縮バネ18よ
り重い圧縮バネ24の圧力を受けた鋼球23が係
入している。切換レバー19の先端にはツマミ部
19cが形成され、該ツマミ部19cはベツドカ
バー20の前面凹部20c内に突出し、ミシン外
部より操作が可能となつている。 An E-ring 17 is attached to an appropriate position on the working arm shaft 11, and a compression spring 18 is provided on the same shaft 11 so that the vertical feed working arm 12 comes into contact with the E-ring 17. In this state, the Katamata part 12a
is opposed to the cam 5a, and the feed dog 10 protrudes upward from the throat plate 26, as shown in FIG. A switching lever 19 is rotatably supported by a boss 20a of a bed cover 20 attached to the free arm 2, and its sliding in the axial direction is restricted by a screw 21 and a nut 25. The switching lever 19 is provided with locking recesses 19a and 19b on the lower surface, and the pressure of the compression spring 24, which is heavier than the compression spring 18 disposed in the hole 20b of the bed cover 20, is constantly applied to either one of the locking recesses. The received steel ball 23 is involved. A knob portion 19c is formed at the tip of the switching lever 19, and the knob portion 19c protrudes into the front recess 20c of the bed cover 20 so that it can be operated from outside the sewing machine.
又、取替レバー19には、適切な大きさの窓穴
22が設けられ、前記係止凹部19aに鉄球23
が係入した状態で、且つ上下送り作用腕12がE
リング17に当接した位置で、ピン13は窓穴2
2に対し適当なスキマAを保有している。 Further, the replacement lever 19 is provided with a window hole 22 of an appropriate size, and an iron ball 23 is provided in the locking recess 19a.
is engaged, and the vertical feed action arm 12 is in the E position.
At the position where the pin 13 contacts the ring 17, the pin 13 is inserted into the window hole 2.
It has an appropriate clearance A for 2.
又第1図で切換レバー19を時計方向に回転さ
すと、窓穴22の右側面22aにピン13が当接
し、圧縮バネ18に抗して上下送り作用腕12が
左に移動する。そして片又部12aが上下送りカ
ム5のカム5aから外れ真円カム5bに相対した
状態で、前記切換レバー19の係止凹部19bに
鋼球23が係入され、切換レバー19が係止され
る。 When the switching lever 19 is rotated clockwise in FIG. 1, the pin 13 comes into contact with the right side surface 22a of the window hole 22, and the vertical feeding arm 12 moves to the left against the compression spring 18. Then, with the cantilevered portion 12a disengaged from the cam 5a of the vertical feed cam 5 and facing the perfect circular cam 5b, the steel ball 23 is engaged in the locking recess 19b of the switching lever 19, and the switching lever 19 is locked. Ru.
尚、26は押え、27は図示せぬ押えバネによ
り下在する押え棒を示す。 Note that 26 indicates a presser foot, and 27 indicates a presser bar located below by a presser spring (not shown).
従来みられた、送り歯の沈下機構は組付性及び
耐摩耗性に難点があつたが、本考案のものでは、
作用腕を設けたことにより上下送りカムと軸とが
固定され振動、摩耗の欠点がなく、上下送りカム
と送り台の水平動とが切離されているためカム形
状が単純化され、作用腕の支持軸の位置によりカ
ム接点位置と送り台接点位置との寸法比によつて
上下送りカムへ加わる荷重を軽減でき切換レバー
が別体組付可能となつたため、組付性が向上し、
その工数を低減できる効果を有する。
The conventional sinking mechanism for the feed dog had problems with ease of assembly and wear resistance, but with the present invention,
By providing the working arm, the vertical feed cam and the shaft are fixed, eliminating the drawbacks of vibration and wear.Since the vertical feeding cam and the horizontal movement of the feed base are separated, the cam shape is simplified, and the working arm Due to the position of the support shaft, the load applied to the vertical feed cam can be reduced due to the dimensional ratio between the cam contact position and the feed base contact position, and the switching lever can be assembled separately, improving ease of assembly.
This has the effect of reducing the number of man-hours.
第1図は本考案装置の構成平面説明図、第2図
は第1図の背面方向視図、第3及び4図は、夫々
第1図のA−A、及びB−B線断端面方向視図、
第5図は第4図の平面図で、第6図は第5図のC
−C線断面図であり、第7図は従来技術の説明図
である。
1……釜軸、5……上下送りカム、6……水平
送り軸、9……送り台、10……送り歯、11…
…作動腕軸、12……上下送り作用腕、13……
ピン、18……圧縮バネ、19………切換レバ
ー。
Fig. 1 is a plan explanatory diagram of the configuration of the device of the present invention, Fig. 2 is a rear view of Fig. 1, and Figs. 3 and 4 are cross-sectional views taken along lines A-A and B-B of Fig. 1, respectively. directional view,
Figure 5 is a plan view of Figure 4, and Figure 6 is the C of Figure 5.
-C line sectional view, and FIG. 7 is an explanatory diagram of the prior art. 1... Hook shaft, 5... Vertical feed cam, 6... Horizontal feed axis, 9... Feed base, 10... Feed dog, 11...
... Operating arm axis, 12... Vertical feed action arm, 13...
Pin, 18...compression spring, 19...switching lever.
Claims (1)
前記釜軸に固着ささた上下送りカム部と該カム部
の最小径部と等しい真円カム部の重合二層になる
上下送りカム、 前記ベツト部に固着された作用腕軸と該作用腕
軸上で圧縮バネにより一方向に付勢され、回転及
び軸方向摺動可能な上下送り作用腕、該上下送り
作用腕の一端を前記上下送りカムに係合せしめ、
他の一方を送り台の上下作用点に微調整部材を介
して接続せしめ、 前記上下送り作用腕の一端部を、前記上下送り
カムの重合二層のいずれか一方に選択的に係合保
持せしめる切換レバー手段からなり、 送り歯の沈下は前記切換レバーの強制操作によ
り、また、送り歯の上昇は該切換レバーの操作
と、前記圧縮バネの圧力により行われるように構
成したミシンの送り歯沈下装置。[Scope of claim for utility model registration] A hook shaft rotatably supported on the sewing machine bed;
A vertical feed cam consisting of two overlapping layers: a vertical feed cam portion fixed to the hook shaft and a perfect circular cam portion having the same diameter as the smallest diameter portion of the cam portion; a working arm shaft fixed to the bed portion; and a working arm shaft fixed to the bed portion. a vertical feeding arm that is biased in one direction by a compression spring at the top and is rotatable and slidable in the axial direction; one end of the vertical feeding arm is engaged with the vertical feeding cam;
The other end is connected to the vertical action point of the feed base via a fine adjustment member, and one end of the vertical feed action arm is selectively engaged and held with either one of the two overlapping layers of the vertical feed cam. The feed dog of the sewing machine is configured to include a switching lever means, and the feed dog is lowered by forced operation of the switching lever, and the feed dog is raised by the operation of the switching lever and the pressure of the compression spring. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9393084U JPS6110186U (en) | 1984-06-22 | 1984-06-22 | Sewing machine feed dog sinking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9393084U JPS6110186U (en) | 1984-06-22 | 1984-06-22 | Sewing machine feed dog sinking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6110186U JPS6110186U (en) | 1986-01-21 |
JPH0111178Y2 true JPH0111178Y2 (en) | 1989-03-31 |
Family
ID=30652048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9393084U Granted JPS6110186U (en) | 1984-06-22 | 1984-06-22 | Sewing machine feed dog sinking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6110186U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0834008B2 (en) * | 1986-11-26 | 1996-03-29 | ソニー株式会社 | Cleaner Disk |
JP5966342B2 (en) * | 2011-12-20 | 2016-08-10 | アイシン精機株式会社 | Drop feed mechanism |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5935188U (en) * | 1982-08-30 | 1984-03-05 | 宮本 義重 | tricycle |
-
1984
- 1984-06-22 JP JP9393084U patent/JPS6110186U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5935188U (en) * | 1982-08-30 | 1984-03-05 | 宮本 義重 | tricycle |
Also Published As
Publication number | Publication date |
---|---|
JPS6110186U (en) | 1986-01-21 |
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