JPH01171594A - Feed gear sinking device for sewing machine - Google Patents
Feed gear sinking device for sewing machineInfo
- Publication number
- JPH01171594A JPH01171594A JP33147187A JP33147187A JPH01171594A JP H01171594 A JPH01171594 A JP H01171594A JP 33147187 A JP33147187 A JP 33147187A JP 33147187 A JP33147187 A JP 33147187A JP H01171594 A JPH01171594 A JP H01171594A
- Authority
- JP
- Japan
- Prior art keywords
- feed
- vertical feed
- vertical
- arm
- cam
- 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 title claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明はミシンの送り歯沈下装置に関し１、家庭用ミシ
ンの送り機構に利用される。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a feed dog sinking device for a sewing machine, and is used in a feed mechanism of a household sewing machine.
（従来の技術）
従来知られたこの種装置として、第４図に示す実公昭５
５−２５８９２号公報に記載された技術が知られる。(Prior art) As a conventionally known device of this kind, a device of the 1970s shown in FIG.
A technique described in Japanese Patent No. 5-25892 is known.
即ち、上下送りカム２１に係合し揺動する作動腕２２に
対し、送り台２３の下面に係合するコロ２４を一端に支
持する切替腕２５を、異なる２つの相対移動位置のいず
れか一方に選択的に保持するようにした。そして前記切
替腕２５の一方の移動位置では、送り歯２６が正規の送
り運動を行い、他方の位置では前記送り歯２６が、針板
２７の上面より下方へ位置するようにしたものである。That is, with respect to the operating arm 22 that engages with the vertical feed cam 21 and swings, the switching arm 25, which supports the roller 24 that engages with the lower surface of the feed table 23 at one end, is moved to one of two different relative movement positions. Selectively retained. In one moving position of the switching arm 25, the feed dog 26 performs a normal feeding motion, and in the other position, the feed dog 26 is positioned below the upper surface of the throat plate 27.
（発明が解決しようとする問題点）
しかし、上記技術においては、布が針板面にセットされ
、押えが下っているときに、送り歯を沈下から正規状態
に移すには、前記切替腕の移動操作力が極端に重くなる
不具合がある。また、送り歯の高さ調節部材を他に設け
る必要があり、コスト的に高いものとなる。(Problem to be Solved by the Invention) However, in the above technique, when the cloth is set on the throat plate surface and the presser foot is lowered, in order to move the feed dog from the sunken state to the normal state, the switching arm must be There is a problem where the movement control force becomes extremely heavy. Furthermore, it is necessary to provide an additional height adjusting member for the feed dog, which increases the cost.
本発明では、上記欠点の解消と構成３組付調整の至便合
理化を計ったものである。The present invention aims to eliminate the above-mentioned drawbacks and streamline the assembly and adjustment of the three components.
〔発明の構成］
（問題点を解決するための手段）
上記課題解決のため、本発明では次のような手段を講じ
た。即ち、上下送りカムに当接し付勢される上下送り腕
を、該上下送りカム軸と平行する支え軸上で揺動可能に
、且つ、前記上下送りカム軸線方向に移動可能に設けた
。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention takes the following measures. That is, the vertical feed arm, which comes into contact with and is biased by the vertical feed cam, is provided to be swingable on a support shaft parallel to the vertical feed cam shaft and movable in the axial direction of the vertical feed cam.
また、機枠に固着され、前記上下送り腕の支え軸を固定
する支え板に、前後する２位置を選択可能とする上下送
り切替レバーを設けた。そしてこの切替レバーの選択操
作で、送り歯が正規の送り運動、或いは沈下の位置とな
り、この状態を保持するようにした。Further, a support plate that is fixed to the machine frame and fixes the support shaft of the vertical feed arm is provided with a vertical feed switching lever that allows selection of two forward and backward positions. By selectively operating this switching lever, the feed dog is placed in a normal feed motion or in a submerged position, and this state is maintained.
（作用）
正規送り位置たる一方（手前側）で、支え板に係止した
切替レバーを付勢ハネ力に抗して押込むと、該レバーは
設定量だけ前進し前方の他方位置に移動して保持される
。(Function) When the switching lever locked to the support plate is pushed in against the biasing spring force at one side (the front side) which is the normal feeding position, the lever moves forward by a set amount and moves to the other position in front. is retained.
この移動に伴い上下送り腕は、上下送りカム軸線方向に
移動して、当接していた部分がカム面より外れる。従っ
て、上下送り台に上下動を伝達する前記上下送り腕の当
接部が降下し、送り台も同様に降下する。この結果送り
歯は針板上面より沈下状態となる。逆に切替レバーと支
え板の係合を解放し、該レバーを元の移動位置に復帰さ
せると、上下送り腕の移動で、該送り腕のカム当接部は
カム面に対接する。Along with this movement, the vertical feed arm moves in the axial direction of the vertical feed cam, and the portion that was in contact with it is removed from the cam surface. Therefore, the abutting portion of the vertical feed arm that transmits the vertical movement to the vertical feed table is lowered, and the feed table is similarly lowered. As a result, the feed dog is sunk below the upper surface of the throat plate. Conversely, when the switching lever and the support plate are disengaged and the lever is returned to its original moving position, the cam contact portion of the feed arm comes into contact with the cam surface due to the movement of the vertical feed arm.
（実施例）
添付図面により、本発明の実施例について説明する。図
において、１は機枠で、２は機枠１に固着された支え仮
、３は上下送り腕（以下送り腕という）でその基部はコ
状３ａを形成する。(Example) An example of the present invention will be described with reference to the accompanying drawings. In the figure, 1 is a machine frame, 2 is a support fixed to the machine frame 1, and 3 is a vertical feed arm (hereinafter referred to as a feed arm) whose base forms a U-shape 3a.
この送り腕３は、そのコ状基部３ａを、前記支え仮２に
固定する支え軸４にハネ５を介在して、回動、且つ軸方
向（バネ５の撓み側）移動を可能に嵌装される。そして
、図示せぬ送り台８の端部に付設されたバネの付勢で、
送り調節カム軸６上の送りカム７に当接し、中間部には
送り台８に上下動を伝達する当接部材９を備える。This sending arm 3 has its U-shaped base 3a fitted onto a support shaft 4 that fixes it to the support temporary 2 through a spring 5 so as to be rotatable and movable in the axial direction (on the deflection side of the spring 5). be done. Then, with the bias of a spring attached to the end of the feed base 8 (not shown),
A contact member 9 is provided in the intermediate portion that contacts the feed cam 7 on the feed adjustment camshaft 6 and transmits vertical movement to the feed table 8.
１０は上下送り切替レバー（以下、切替レバーという）
で、手前側にツマミ１１を有し、中間部に段部１０ａ、
切欠き部１０ｂを持ち、前記支え板２の案内長孔２ａに
挿通され、Ｌ字形を形成するその他端部１０ｃはコ状の
送り腕基部３ａに挟まれ前記支え軸４に遊嵌されている
。10 is a vertical feed switching lever (hereinafter referred to as switching lever)
It has a knob 11 on the front side, and a stepped part 10a in the middle part.
The other end 10c, which has a notch 10b and is inserted into the guide slot 2a of the support plate 2 and forms an L shape, is sandwiched between the U-shaped feed arm bases 3a and loosely fitted to the support shaft 4. .
而して、切替レバー１０は、該レバーの端部と前記支え
板２間に張設されたハネ１２により、手前方向に付勢さ
れ、常態では段部１０ａの係合により手前側の位置（Ａ
）に在位する。The switching lever 10 is biased toward the front by the spring 12 stretched between the end of the lever and the support plate 2, and is normally moved to the front position by the engagement of the stepped portion 10a. A
).
この切替レバー１０をバネ１２に抗して押込むと、切欠
き部１０ｂが支え板２と係合し、該レバー１０は前進し
た（Ｂ）位置を確保する。When the switching lever 10 is pushed in against the spring 12, the notch 10b engages with the support plate 2, and the lever 10 secures the forward position (B).
この前進で、送り腕３はハネ５を圧縮し、その先端のカ
ム当接部３ｂが送りカム７上を移動する。By this forward movement, the feed arm 3 compresses the spring 5, and the cam contact portion 3b at the tip thereof moves on the feed cam 7.
前記送り台８の一端は、水平送り腕１３に設けた支軸１
４に揺動自在に嵌装され、他端には送り歯１５が固定さ
れる。One end of the feed table 8 is attached to a support shaft 1 provided on the horizontal feed arm 13.
4, and a feed dog 15 is fixed to the other end.
次に、上下送り運動について述べる。Next, the vertical feed motion will be described.
（１）通常正規の上下送り運動
上下送りカム７の回転により、送り腕３が揺動し、送り
台８を介して送り歯１５が上下動する。(1) Normal vertical feed movement The rotation of the vertical feed cam 7 causes the feed arm 3 to swing, and the feed dog 15 moves up and down via the feed table 8.
（２）正規の送りを回避し、送り歯を沈下させるには、
切替レバー１０を前方に押込み、（Ｂ）位置の常態にす
る。これで送り腕３の送りカム当接部３ｂを、カム面７
から離接させ、送り腕３の揺動を不作用状態にする。(2) To avoid normal feeding and sink the feed dog,
Push the switching lever 10 forward to the normal position (B). With this, the feed cam contact portion 3b of the feed arm 3 is connected to the cam surface 7.
The swing of the feed arm 3 is rendered inactive.
（３）上下送りを作用させるには、
切替レバー１０を（Ａ）位置に復帰させることにより、
送り腕３がハネ５により手前側に押戻され、該送り腕の
当接部３ｂが上下送りカム７のカム面７に当接し、上下
送りが正規に作動する。この復帰切替操作に当り、上下
送りカムの回転静止角度始めで、送り腕の当接部がカム
のリフト形状（高さ）にぶつかり、移動を防げらること
があり得るが、この不都合はハネ５のたわみで吸収され
、上下送りカムの回転で即時解消する。(3) To activate the vertical feed, return the switching lever 10 to the (A) position.
The feed arm 3 is pushed back toward the front side by the spring 5, and the contact portion 3b of the feed arm contacts the cam surface 7 of the vertical feed cam 7, and the vertical feed operates normally. During this return switching operation, the contact part of the feed arm may collide with the lift shape (height) of the cam at the beginning of the rotational static angle of the vertical feed cam, preventing it from moving. It is absorbed by the deflection of step 5, and immediately resolved by rotating the vertical feed cam.
（１）装置構成がシンプルにアツシされており、他の谷
構造部品と同一方向から徂付けができ、作業が楽でコス
ト的に有利である。(1) The device configuration is simple and can be attached from the same direction as other valley structure parts, making the work easy and cost-effective.
（２）送り歯の高さ調節が上下送り装置をヘットに組付
けるとき、長孔部で同時に調節することができ、他に調
節部材を必要としない。(2) When the vertical feed device is assembled to the head, the height of the feed dog can be adjusted at the same time using the elongated hole, and no other adjustment member is required.
（３）送り歯の上昇切替は、必ず該送り歯が針板より下
がっているとき行われる事になるので、針折れが発生し
ないという効果がある。(3) Since the upward switching of the feed dog is always performed when the feed dog is lower than the throat plate, there is an effect that needle breakage does not occur.
第１図は本発明装置の実施例説明正面図、第２図は第１
図の平面視図、第３図は切替レバーの操作説明図、第４
図は従来技術の説明図である。
１・・・機枠、２・・・支え板。
３・・・上下送り腕、７・・・送りカム２８・・・送り
台、１０・・・切替レバー。
１５・ ・ ・送り歯。Fig. 1 is a front view of an embodiment of the device of the present invention, and Fig. 2 is a front view of an embodiment of the device of the present invention.
Figure 3 is a plan view of the figure, Figure 3 is an explanatory diagram of the operation of the switching lever, Figure 4 is
The figure is an explanatory diagram of the prior art. 1... Machine frame, 2... Support plate. 3...Vertical feed arm, 7...Feed cam 28...Feed stand, 10...Switching lever. 15... ・Feed dog.
Claims (1)
当接部材を備えた上下送り腕を、前記上下送りのカム軸
と平行する、バネを備えた支え軸に揺動、且つ軸方向移
動を可能に嵌装し、前記支え軸を固着する支え板に、前
後２位置を選択的に移動保持可能とする上下送り切替レ
バーを装着し、該切替レバーの移動操作で、前記上下送
り腕を支え軸上で軸方向移動させ、送りカム面との接離
を行うようにしたミシンの送り歯沈下装置。A vertical feed arm, which is equipped with a contact member that contacts the vertical feed cam and transmits vertical movement to the vertical feed base, is swung around a support shaft equipped with a spring, which is parallel to the cam shaft for the vertical feed, and is moved in the axial direction. A vertical feed switching lever that can selectively move and hold two positions, front and rear, is attached to a support plate that is movably fitted and fixes the support shaft, and by moving the switching lever, the vertical feed arm is moved. A sewing machine feed dog sinking device that moves the feed dog in the axial direction on a supporting shaft to bring it into contact with and separate from the feed cam surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33147187A JP2681952B2 (en) | 1987-12-26 | 1987-12-26 | Sewing machine settling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33147187A JP2681952B2 (en) | 1987-12-26 | 1987-12-26 | Sewing machine settling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171594A true JPH01171594A (en) | 1989-07-06 |
| JP2681952B2 JP2681952B2 (en) | 1997-11-26 |
Family
ID=18244016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33147187A Expired - Fee Related JP2681952B2 (en) | 1987-12-26 | 1987-12-26 | Sewing machine settling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2681952B2 (en) |
-
1987
- 1987-12-26 JP JP33147187A patent/JP2681952B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2681952B2 (en) | 1997-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |