JP2762148B2 - sewing machine - Google Patents
sewing machineInfo
- Publication number
- JP2762148B2 JP2762148B2 JP3814790A JP3814790A JP2762148B2 JP 2762148 B2 JP2762148 B2 JP 2762148B2 JP 3814790 A JP3814790 A JP 3814790A JP 3814790 A JP3814790 A JP 3814790A JP 2762148 B2 JP2762148 B2 JP 2762148B2
- Authority
- JP
- Japan
- Prior art keywords
- needle bar
- elevating body
- sewing
- main shaft
- sewing machine
- 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 - Lifetime
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] この発明はミシンに関し、詳しくは縫製中において目
とびを可能にする構成を備えたミシンに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine, and more particularly, to a sewing machine having a configuration that enables skipping during sewing.
[従来の技術] この種のミシンは、主軸の回動により昇降体を上下動
させ、その昇降体によって針棒を上下動させる。上記昇
降体はその上下動を案内する案内棒に一体化させ、その
案内棒を介して昇降体を回すことにより、昇降体を針棒
と係合しない位置へ退避させ目とびを可能にする。この
ような構造が公知(例えば特開昭51−9947)である。[Prior Art] In this type of sewing machine, an elevating body is moved up and down by rotation of a main shaft, and a needle bar is moved up and down by the elevating body. The elevating body is integrated with a guide rod for guiding its vertical movement, and the elevating body is rotated through the guide rod to retreat the elevating body to a position where the elevating body does not engage with the needle bar, thereby enabling jumping. Such a structure is known (for example, JP-A-51-9947).
[発明が解決しようとする課題] この従来のミシンでは、縫製を行なう場合、昇降体の
みならず上記目とびの為の回動力を伝える案内棒をも一
緒に上下動させねばならぬ為、上下動する構造の重量が
大きく、従ってその昇降体の上下動の高速化が阻まれる
問題点があった。また目とびをさせる場合においても、
案内棒と、案内棒から針棒にわたる長い昇降体とを含め
た重量物を回さねばならず、従ってその動きは遅く、比
較的低速での縫製中でないと目とびができない問題点が
あった。[Problems to be Solved by the Invention] In this conventional sewing machine, when performing sewing, not only the elevating body but also the guide rod for transmitting the turning power for skipping the eye must be moved up and down together. There is a problem that the weight of the moving structure is large, so that the speed of the vertical movement of the elevating body is prevented. Also, when you skip the eyes,
A heavy object including the guide bar and a long lifting body extending from the guide bar to the needle bar has to be turned, so that the movement is slow, and there is a problem that the sewing cannot be skipped unless sewing at a relatively low speed. .
本発明は上記従来技術の問題点(技術的課題)を解決
する為になされたもので、縫製の為の昇降体の上下動、
及び目とびの為の構成である係合子の位置替の各動作の
敏捷化を可能ならしめて、縫製を高速化できると共に、
そのような高速縫製中においても目とびを行なうことが
できるようにしたミシンを提供することを目的とするも
のである。The present invention has been made in order to solve the problems (technical problems) of the prior art described above, and includes a vertical movement of an elevating body for sewing,
In addition, it is possible to increase the speed of each operation of the position change of the engaging element, which is a structure for skipping, and to speed up sewing,
It is an object of the present invention to provide a sewing machine capable of performing eye skipping even during such high-speed sewing.
[課題を解決する為の手段] 上記目的を達成する為に、本願発明は前記請求の範囲
記載の通りの手段を講じたものであって、その作用は次
の通りである。[Means for Solving the Problems] In order to achieve the above object, the present invention employs the means described in the claims, and the operation is as follows.
[作用] 主軸が回動すると昇降機構によって昇降体が上下動さ
れる。その上下動により昇降体における係合子によって
針棒が上下動され縫製が行なわれる。上記縫製の途中に
おいて目とびをさせる場合、操作機構により上記係合子
が退避位置に位置替される。この状態では、昇降体が上
下動してもその上下動は針棒に伝えられず針棒は静止状
態を保つ。[Operation] When the main shaft rotates, the elevating body is moved up and down by the elevating mechanism. The needle bar is moved up and down by the engaging element of the elevating body by the vertical movement, and sewing is performed. When skipping in the middle of the sewing, the engaging element is moved to the retracted position by the operating mechanism. In this state, even if the elevating body moves up and down, the up and down movement is not transmitted to the needle bar, and the needle bar remains stationary.
[実施例] 以下本願の実施例を示す図面について説明する。1は
ヘッドフレーム、2は上下動自在の針棒、3は天秤、4
は図示外の駆動装置によって回動されるようにした主
軸、5は主軸4と針棒2との間で駆動力の伝動を行なう
為の針棒駆動機構、6は主軸4と天秤3との間で駆動力
の伝動を行なう為の周知の天秤駆動機構を夫々示す。[Embodiment] Drawings showing an embodiment of the present application will be described below. 1 is a head frame, 2 is a vertically movable needle bar, 3 is a balance, 4
Is a main shaft which is rotated by a driving device (not shown), 5 is a needle bar driving mechanism for transmitting a driving force between the main shaft 4 and the needle bar 2, and 6 is a main shaft 4 and a balance 3 The well-known balance drive mechanism for transmitting the driving force between them is shown respectively.
次に上記針棒2に関連する構造について説明する。10
はヘッドフレーム1に枢着した針棒の保持枠を示し、該
保持枠10に複数の針棒2が夫々平行な状態で、しかも上
下動自在に装着してある。11は周知の針棒切替機構で、
保持枠10をその回動中心(後述の案内棒と同心)を中心
に回動させ得るようになっている。符号12〜21は針棒2
に関連する公知(例えば特開昭51−9947或は特開昭60−
173156)の部材を示し、12は針棒の上端に備えられた当
片、13は下端に備えられた止具、14は針、15は針棒2に
対し上下動自在の押え体、16は布押え部、17,18は夫々
圧縮ばね、19は掛合部材、20は該部材19における掛合
部、21は掛合部材19と一体化され、かつ下端を押え体15
に連繋させた振止片を夫々示す。Next, a structure related to the needle bar 2 will be described. Ten
Denotes a holding frame of a needle bar pivotally mounted on the head frame 1, and a plurality of needle bars 2 are mounted on the holding frame 10 in parallel with each other and vertically movable. 11 is a well-known needle bar switching mechanism,
The holding frame 10 can be rotated about its rotation center (concentric with a guide rod described later). Symbols 12 to 21 are needle bar 2
(For example, JP-A-51-9947 or JP-A-60-90)
173156), 12 is an abutment provided at the upper end of the needle bar, 13 is a stopper provided at the lower end, 14 is a needle, 15 is a presser body that can move up and down with respect to the needle bar 2, and 16 is A cloth presser portion, 17 and 18 are compression springs, 19 is a hooking member, 20 is a hooking portion of the member 19, 21 is integrated with the hooking member 19, and a lower end of the pressing body 15 is provided.
Are shown respectively.
次に針棒駆動機構5について説明する。24は針棒2と
平行な状態でヘッドフレーム1に取付けた案内棒、25は
案内棒24に対し上下動自在に装着した昇降体、26は主軸
4の回動力を受けて、昇降体25を上下動させるようにし
た昇降機構で、一例として符号27〜31の部材で構成され
たクランク機構が用いてある。即ち27は主軸4に固着し
た偏心輪、28はクランクロッド、29は枢軸30でもってヘ
ッドフレーム1に枢着したレバー、31はレバー29の自由
端と昇降体25との間を連繋させるようにしたリンクを夫
々示し、主軸4の回動によりレバー29が第1図及び第4
図に示されるように上下に揺動し、それによって昇降体
25が上下動するようにしてある。Next, the needle bar driving mechanism 5 will be described. 24 is a guide bar attached to the head frame 1 in a state parallel to the needle bar 2, 25 is an elevating body mounted on the guide bar 24 so as to be able to move up and down, and 26 is receiving the rotating power of the main shaft 4 and The lift mechanism is configured to be moved up and down, and as an example, a crank mechanism including members 27 to 31 is used. That is, reference numeral 27 denotes an eccentric wheel fixed to the main shaft 4, reference numeral 28 denotes a crank rod, reference numeral 29 denotes a lever pivotally connected to the head frame 1 by a pivot 30, and reference numeral 31 denotes a link between the free end of the lever 29 and the elevating body 25. In FIG. 1 and FIG.
Swing up and down as shown in the figure,
25 moves up and down.
次に上記昇降体25及びそれに関連する構造について説
明する。34は昇降体における本体で、上下方向に穿設さ
れた透孔34aに前記案内棒24が挿通されて、案内棒24に
対する上下動が可能となっている。35は本体34における
持出部で、図示される如く針棒2の側に持出された部分
である。36は係合子で、上記持出部35の先部に枢着具
(例えばボルト)37によって枢着してある。38は係合子
36と一体形成の受アームで、その自由端部は二又状に形
成されて、次に述べる操作機構との係合部38となってい
る。39は該係合部における間隙を示す。次に40は上記係
合子36の操作機構を示す。41は該機構における操作手段
として例示するロータリーソレノイドで、ヘッドフレー
ム1に固定してある。42はソレノイド41の回転軸41aに
取付けた駆動アーム、43はアーム42の先端部に取付けた
操作片で、針棒2と平行な方向に長く形成してあり、前
記間隙39に位置させてある。Next, the elevating body 25 and a structure related thereto will be described. Numeral 34 denotes a main body of the elevating body. The guide rod 24 is inserted through a through hole 34a formed in the up-down direction so that the guide rod 24 can move up and down. Reference numeral 35 denotes a take-out portion of the main body 34, which is a portion taken out toward the needle bar 2 as shown in the figure. Numeral 36 denotes an engaging element, which is pivotally attached to the tip of the take-out section 35 by a pivoting tool (for example, bolt) 37. 38 is the engaging element
The receiving arm is formed integrally with the receiving arm 36, and its free end is formed in a bifurcated shape to form an engaging portion 38 with an operating mechanism described below. Reference numeral 39 denotes a gap in the engaging portion. Next, reference numeral 40 denotes an operation mechanism of the engagement element 36. Reference numeral 41 denotes a rotary solenoid exemplified as an operation means in the mechanism, which is fixed to the head frame 1. 42 is a drive arm attached to the rotating shaft 41a of the solenoid 41, 43 is an operation piece attached to the tip of the arm 42, formed long in a direction parallel to the needle bar 2 and located in the gap 39. .
次に上記構成のミシンの動作を説明する。 Next, the operation of the sewing machine having the above configuration will be described.
(A)縫製動作について 通常の縫製を行なう場合には、ロータリーロレノイド
41は非通電の状態にあり、操作片43は第2図に示される
位置にある。この為係合子36は第1図及び第2図に示さ
れるように針棒2との係合が可能な係合位置、即ち本実
施例では当片12の直上位置に位置している。この状態に
おいて主軸4が回動すると、前に述べたように昇降体25
が第1図及び第4図に示されるように上下動し、その昇
降体25における係合子36によって針棒2が上記第1、4
図に示されるように上下動する。この上下動によって通
常の如く縫製が行なわれる。尚上記係合位置は、針棒2
に係合子36と係合する為の付属物が付設される場合には
それらの係合が可能な位置である。(A) Sewing operation When performing normal sewing, use the rotary solenoid.
41 is in a non-energized state, and the operation piece 43 is at the position shown in FIG. For this reason, the engaging element 36 is located at an engaging position where it can engage with the needle bar 2 as shown in FIGS. 1 and 2, that is, in this embodiment, at a position immediately above the contact piece 12. When the main shaft 4 rotates in this state, the lifting body 25
1 and 4 move up and down as shown in FIGS. 1 and 4, and the needle bar 2
Move up and down as shown. By this vertical movement, sewing is performed as usual. The engagement position is the needle bar 2
If accessories for engaging with the engaging element 36 are provided, the position is such that they can be engaged.
(B)上記縫製中における目とびについて この場合には、昇降体25が第1図に示されるように上
昇位置に至った時点乃至は昇降体25が上記上昇位置に至
る上昇過程においてロータリーソレノイド41に通電さ
れ、その回転軸の回動により操作片43は第5図に示され
る位置に至る。この為係合子36は第5図に示されるよう
に上記係合位置から退避した退避位置に至る。従って、
引き続いて昇降体25が下降するときには係合子36は当片
12には係合せず、針棒2は上死点に位置したまま昇降体
25のみが下降する。ソレノイド41に通電が継続されてい
る間、係合子36は上記のような退避位置に位置する為、
昇降体25は針棒2を伴うことなく上下動を繰り返す。こ
れにより布に対する縫製は目とびの状態となる。(B) Regarding skipping during sewing In this case, the rotary solenoid 41 is moved from the time when the lifting / lowering body 25 reaches the rising position as shown in FIG. And the operation piece 43 reaches the position shown in FIG. 5 by the rotation of the rotating shaft. Therefore, the engaging element 36 reaches the retracted position retracted from the engaging position as shown in FIG. Therefore,
Subsequently, when the elevating body 25 descends, the engagement element 36 is
12 does not engage, the needle bar 2 remains at the top dead center
Only 25 drops. While the energizing of the solenoid 41 is continued, the engaging element 36 is located at the retracted position as described above,
The elevating body 25 repeats up and down movement without the needle bar 2. Thereby, the sewing on the cloth is in a skipped state.
上記の場合小さな係合子36は極めて敏捷に動かすこと
ができる為、極めて高速度での縫製中においても目とび
が可能である。例えば前記従来技術の場合は主軸の回転
数が650RPMでの縫製中における目とびが上限であったの
に対し、実験によれば本例の場合は750RPMでの縫製中に
おける目とびも可能である。In this case, since the small engaging element 36 can be moved very quickly, skipping is possible even during sewing at an extremely high speed. For example, in the case of the prior art, the skipping during sewing at a spindle rotation speed of 650 RPM was the upper limit, but according to experiments, in the case of this example, skipping during sewing at 750 RPM is also possible. .
[発明の効果] 以上のように本願発明にあっては、縫製の場合、案内
棒24は静止状態においたまま、それに沿って上下動する
本体34とその本体に取付けた小さな係合子36を上下動さ
せるのみだから、即ち前記従来技術のように案内棒まで
も一緒に含めた重い重量を上下動させていたものに比べ
軽い重量を上下動させれば良く、従って、上下動の慣性
は小さくしかも上下動をさせるに要する駆動力も小さく
て足りて、昇降体25の上下動の高速化を可能にできる効
果がある。[Effects of the Invention] As described above, in the present invention, in the case of sewing, while the guide rod 24 is in a stationary state, the main body 34 that moves up and down along the guide rod 24 and the small engaging element 36 attached to the main body are moved up and down. That is, it is only necessary to move the light weight up and down as compared to the one in which the heavy weight including the guide rod is moved up and down together with the guide rod as in the prior art, and therefore, the inertia of the up and down movement is small and There is an effect that the driving force required for the vertical movement is small, and the vertical movement of the elevating body 25 can be accelerated.
しかも縫製途中において目とびをさせる場合、本体34
の先に付けた小さな係合子36のみを退避位置に位置替さ
せるから、即ち前記従来技術のように案内棒と、案内棒
から針棒までの距離の全長にわたる長い昇降体とを含む
重い構造を位置替させてたものに比べ極めて軽い係合子
36のみを位置替させるから、極めて敏捷な位置替が可能
となり、上記の如く昇降体25の高速化により縫製を高速
化させてもその途中での目とびを可能にできる効果があ
る。In addition, when skipping is performed during sewing,
Since only the small engaging element 36 attached to the end of the guide rod is moved to the retracted position, that is, a heavy structure including a guide rod and a long lifting body extending over the entire length of the distance from the guide rod to the needle bar as in the related art is used. Very light engagement element compared to the one that has been repositioned
Since only 36 is repositioned, extremely agile repositioning becomes possible, and as described above, even if the sewing speed is increased by increasing the speed of the lifting / lowering body 25, it is possible to make it possible to skip over on the way.
図面は本願の実施例を示すもので、第1図はミシンヘッ
ドの縦断面図、第2図は昇降体と針棒との関係を示す平
面図(案内棒及び昇降体の本体に関しては第1図のII−
II線位置での断面を示すと共に、一部の針棒における掛
合部材の一部を破断した状態を示す)、第3図は昇降体
及びそれと操作機構との関係を示す分解斜視図、第4図
は昇降体が下降した状態を示す部分図、第5図は係合子
が第2図の状態から退避位置に移動した状態を示す図。 1……ヘッドフレーム、2……針棒、4……主軸、24…
…案内棒、25……昇降体、34……本体、36……係合子、
40……操作機構。1 is a longitudinal sectional view of a sewing machine head, and FIG. 2 is a plan view showing the relationship between an elevating body and a needle bar. II-
FIG. 3 shows a cross section at the position of the II line and shows a state in which a part of a hooking member of a part of the needle bar is broken), FIG. FIG. 5 is a partial view showing a state in which the lifting / lowering body is lowered, and FIG. 5 is a view showing a state in which the engagement element is moved from the state in FIG. 1 ... head frame, 2 ... needle bar, 4 ... spindle, 24 ...
... Guide rod, 25 ... Elevating body, 34 ... Main body, 36 ...
40 …… Operation mechanism.
Claims (1)
と、駆動用の主軸とが備えられ、上記主軸と針棒との間
の伝動の機構は、上記針棒と平行な方向への上下動が可
能な昇降体と、上記主軸の回動力をうけて上記昇降体を
上下動させるようにした昇降機構とを有し、しかも上記
昇降体は上記針棒に対し接離自在に構成してあるミシン
において、上記針棒に対する昇降体の接離自在の構成
は、上記昇降体を、上記ヘッドフレームに上記針棒と平
行状態に設けられた案内棒に沿って上下動するようにし
た本体と、上記本体において上記針棒に近い側の部分
に、上記針棒に対し係合可能な係合位置とそこから退避
した退避位置との間の位置替を自在に取付けた係合子と
により構成する一方、上記係合子にはそれを上記係合位
置と退避位置とに位置替させる為の操作機構を連繋させ
た構成であることを特徴とするミシン。A head frame is provided with a vertically movable needle bar and a drive main shaft, and a transmission mechanism between the main shaft and the needle bar is provided in a direction parallel to the needle bar. It has an elevating body that can move up and down, and an elevating mechanism that moves the elevating body up and down by receiving the rotating power of the main shaft, and furthermore, the elevating body is configured to be able to freely contact and separate from the needle bar. In the sewing machine, the lifting body can be freely moved toward and away from the needle bar by moving the lifting body up and down along a guide bar provided in the head frame in a state parallel to the needle bar. And an engaging element which is attached to a portion of the main body close to the needle bar, the position of which is freely changed between an engaging position engageable with the needle bar and a retracted position retracted therefrom. On the other hand, the engaging element is moved to the engaging position and the retracted position. Sewing machine wherein the operation mechanism is obtained by interlocking configure for causing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3814790A JP2762148B2 (en) | 1990-02-19 | 1990-02-19 | sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3814790A JP2762148B2 (en) | 1990-02-19 | 1990-02-19 | sewing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03242195A JPH03242195A (en) | 1991-10-29 |
JP2762148B2 true JP2762148B2 (en) | 1998-06-04 |
Family
ID=12517308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3814790A Expired - Lifetime JP2762148B2 (en) | 1990-02-19 | 1990-02-19 | sewing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2762148B2 (en) |
-
1990
- 1990-02-19 JP JP3814790A patent/JP2762148B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03242195A (en) | 1991-10-29 |
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