JP5810606B2

JP5810606B2 - Sewing machine embroidery presser and sewing machine

Info

Publication number: JP5810606B2
Application number: JP2011099544A
Authority: JP
Inventors: 泰典河合
Original assignee: Aisin Seiki Co Ltd; Aisin Corp
Current assignee: Aisin Corp
Priority date: 2011-04-27
Filing date: 2011-04-27
Publication date: 2015-11-11
Anticipated expiration: 2031-04-27
Also published as: JP2012228431A; EP2518200A2; CN202913202U; EP2518200B1; EP2518200A3

Description

本発明はミシンの昇降可能な押さえ棒に取り付けられる刺繍押さえ及びミシンに関する。 The present invention relates to an embroidery presser and a sewing machine that are attached to a presser bar that can be moved up and down.

特許文献１は刺繍ミシンの布押さえ機構を開示する。このものは、押さえ棒と、押さえ棒に固定された支持部材と、支持部材に昇降可能に支持された被案内軸と押さえ足とをもつ押さえ足部材と、支持部材に枢支ピンを介して揺動可能に支持された上下駆動レバーと、被案内軸の外周側に嵌合され上下駆動レバーを下方に付勢する圧縮コイルバネとを有する。刺繍時において針留めの昇降を上下駆動レバーが拾う。 Patent Document 1 discloses a cloth pressing mechanism for an embroidery sewing machine. This includes a presser bar, a support member fixed to the presser bar, a presser foot member having a guided shaft and a presser foot supported by the support member so as to be movable up and down, and a pivot pin on the support member. It has a vertical drive lever supported so as to be able to swing, and a compression coil spring which is fitted to the outer peripheral side of the guided shaft and biases the vertical drive lever downward. The vertical drive lever picks up and down the needle clamp during embroidery.

特許文献２は刺繍ミシンの刺繍押さえを開示する。このものは、押さえ棒を昇降させるために押さえ上げレバーの手動操作により、押さえ棒を上昇させる。このと、押さえ上動用回動レバーの当接部がミシン機枠と当接することで、布押さえ部を有する押さえ足部材をホルダ部材に対して相対的に上昇させる押さえ上げ機構が設けられている。このものによれば、押さえ上げレバーの操作により押さえ棒を上昇させたとき、布押さえ部の上昇ストロークを拡大できる。 Patent Document 2 discloses an embroidery presser for an embroidery sewing machine. This raises the presser bar by manual operation of the presser lift lever in order to raise and lower the presser bar. In this case, there is provided a press-up mechanism that raises the presser foot member having the cloth presser portion relative to the holder member by the contact portion of the presser-up moving rotation lever coming into contact with the sewing machine frame. . According to this, when the presser bar is lifted by operating the presser lifting lever, the lifting stroke of the cloth presser portion can be expanded.

特許文献３は、ミシンの針を包囲するように設けられた安全カバーを開示する。このものによれば、安全カバーはミシンのベッド部に取り付けられており、ユーザの指が針に触れることが抑制される。 Patent Document 3 discloses a safety cover provided so as to surround a needle of a sewing machine. According to this, the safety cover is attached to the bed portion of the sewing machine, and the user's finger is prevented from touching the needle.

特開２００５−５８３６０号公報JP 2005-58360 A 特開２００６−２６３１７０号公報JP 2006-263170 A 特開２００６−２６３２７２号公報JP 2006-263272 A

上記した文献に係る技術によれば、刺繍押さえをミシンの押さえ棒に取り付けたり取り外したりする作業のときには、押さえ足は針板側に大きく突出しており、刺繍押さえの高さ寸法が大きく、作業は必ずしも容易ではなかった。 According to the technique according to the above-described literature, when the embroidery presser is attached to or removed from the presser bar of the sewing machine, the presser foot protrudes greatly toward the needle plate side, and the height of the embroidery presser is large. It was not always easy.

特許文献１によれば、ユーザが刺繍枠を通すためには、ミシンの押さえ上げレバーの操作と、刺繍押さえレバーの操作との操作が必要とされ、作業性が悪い。特許文献２によれば、押さえ棒が１段目保持位置であると、刺繍押さえの押さえ足を上昇させるレバーがミシン機枠に触れるため、ユーザがレバーを手で押さえて取り付ける必要があり、作業性が悪い。更に、押さえ棒がゼロ段保持位置であると、刺繍押さえの押さえ足が針板に接触するため、ユーザは、刺繍押さえの押さえ足を手で必ず押さえ、押さえ足が針板に接触しないようにしなければならず、作業性が悪い。 According to Patent Literature 1, in order for the user to pass the embroidery frame, the operation of the sewing machine press-up lever and the operation of the embroidery press lever are required, and workability is poor. According to Patent Document 2, when the presser bar is in the first-stage holding position, the lever that raises the presser foot of the embroidery presser touches the sewing machine frame. The nature is bad. Furthermore, since the presser foot of the embroidery presser touches the needle plate when the presser bar is in the zero step holding position, the user must press the presser foot of the embroidery presser with his hand and make sure that the presser foot does not touch the needle plate. Workability is poor.

本発明は上記した実情に鑑みてなされたものであり、刺繍押さえを押さえ棒に取り付けたり取り外したりする作業を容易にできるミシン刺繍押さえ及びミシンを提供することを課題とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sewing machine embroidery presser and a sewing machine that can easily attach and remove the embroidery presser to and from the presser bar.

（１）本発明に係る様相１のミシン刺繍押さえは、針を保持する針留めをもち高さ方向に昇降可能な針棒と、高さ方向に昇降可能な押さえ棒と、押さえ棒を昇降させるための押さえ上げレバーとをもつミシンのうち、押さえ棒に取り付けられるミシン刺繍押さえであって、
（ｉ）押さえ棒の下部に取付具により取り付けられる押さえホルダと、
（ｉｉ）押さえホルダに取り付けられ針棒または針留めに持ち上げられて高さ方向に昇降する操作腕と、
（ｉｉｉ）操作腕と共に連動するように押さえホルダに昇降可能に保持されミシンの針板に対面すると共に被裁縫物を押さえる押さえ足と、
（ｉｖ）押さえホルダに設けられ押さえ足を針板に向けて付勢する付勢力をもつ押さえバネと、
（ｖ）押さえホルダに回動可能に設けられ、回動に伴い操作腕を昇降させるカムプロフィールをもつカム面と操作腕を係合させて前記押さえ足を押さえホルダ側に移動させて針板から浮上させる第１高さ位置に仮固定させる固定溝とユーザの指により操作される操作部とをもつ副レバーとを具備することを特徴とする。 (1) The sewing machine embroidery presser of aspect 1 according to the present invention has a needle bar that holds a needle and can be raised and lowered in the height direction, a presser bar that can be raised and lowered in the height direction, and a presser bar A sewing machine embroidery presser attached to a presser bar among sewing machines having a presser lifting lever for
(I) a holding holder that is attached to the lower part of the holding bar by a fixture;
(Ii) an operating arm attached to the holding holder and lifted up and down in the height direction by the needle bar or the needle clamp;
(Iii) a presser foot that is held up and down by the presser holder so as to be interlocked with the operating arm, faces the needle plate of the sewing machine, and presses the sewing object;
(Iv) a pressing spring provided in the pressing holder and having a biasing force that biases the pressing foot toward the needle plate;
(V) The presser holder is pivotably provided, the cam surface having a cam profile that moves the operating arm up and down with the rotation is engaged with the operating arm, and the presser foot is moved to the pressing holder side to move from the needle plate. A sub-lever having a fixing groove that is temporarily fixed at a first height position to be levitated and an operation unit that is operated by a user's finger is provided.

刺繍押さえを押さえ棒に取り付けるとき、刺繍押さえの操作腕が副レバーの固定溝に係合して仮固定されていれば、押さえ足は押さえホルダ側に移動し、刺繍押さえの全体の高さ寸法は縮んでいる。すなわち、押さえ足は針板側に大きく突出しないように押さえホルダ側に移動した状態で仮固定されている。このため刺繍押さえを押さえ棒に取り付けるとき、その取り付け作業性は容易となる。更に、刺繍押さえの操作腕が副レバーの固定溝に係合して仮固定されていれば、副レバーの回動位置は自由回動しないように押さえホルダに保持されており、刺繍押さえを押さえ棒に取り付けるとき、副レバーの自由回動が抑えられ、刺繍押さえを押さえ棒に取り付ける取付作業が更に容易となる。 When attaching the embroidery presser to the presser bar, if the operating arm of the embroidery presser is temporarily fixed by engaging with the fixing groove of the sub-lever, the presser foot moves to the presser holder side, and the overall height of the embroidery presser Is shrinking. That is, the presser foot is temporarily fixed in a state where it is moved to the presser holder side so as not to protrude greatly to the needle plate side. For this reason, when the embroidery presser is attached to the presser bar, the attachment workability becomes easy. Furthermore, if the operating arm of the embroidery press is engaged and temporarily fixed to the fixing groove of the sub-lever, the rotation position of the sub-lever is held by the press holder so that it does not rotate freely. When attached to the bar, the free rotation of the sub-lever is suppressed, and the attachment work for attaching the embroidery presser to the presser bar becomes easier.

更に、高さ寸法が縮んだ刺繍押さえを押さえ棒に取り付ければ、刺繍押さえと針板との間に広めの隙間が自動的に形成されるため、刺繍押さえをユーザが手作業で逐一刺繍押さえを上昇させずとも良く、その隙間に刺繍枠を通して容易にセットできる。 In addition, if a embroidery presser with a reduced height is attached to the presser bar, a wide gap is automatically formed between the embroidery presser and the needle plate. It does not need to be raised and can be easily set through the embroidery frame in the gap.

また、押さえ棒に取り付けられている刺繍押さえを取り外すときにおいても、刺繍押さえの操作腕が副レバーの固定溝に係合して仮固定されていれば、押さえ足は押さえホルダ側に移動し、刺繍押さえの全体の高さ寸法は縮んでいる。すなわち、押さえ足は針板側に大きく突出しないように押さえホルダ側に移動している。このため刺繍押さえを押さえ棒から取り外すとき、その取り外し作業性は容易となる。更に、刺繍押さえの操作腕が副レバーの固定溝に係合して仮固定されていれば、副レバーの回動位置は自由回動しないように押さえホルダに保持されており、刺繍押さえを押さえ棒から取り外すとき、その取付外し作業が更に容易となる。 Also, when removing the embroidery presser attached to the presser bar, if the operating arm of the embroidery presser is temporarily fixed by engaging with the fixing groove of the sub lever, the presser foot moves to the presser holder side, The overall height of the embroidery presser is shrinking. That is, the presser foot has moved to the presser holder side so as not to protrude greatly to the needle plate side. For this reason, when the embroidery presser is removed from the presser bar, the removal workability becomes easy. Furthermore, if the operating arm of the embroidery press is engaged and temporarily fixed to the fixing groove of the sub-lever, the rotation position of the sub-lever is held by the press holder so that it does not rotate freely. When detaching from the rod, the detachment work becomes easier.

（２）本発明に係る様相２のミシン刺繍押さえによれば、上記様相において、刺繍押さえの操作腕は、針棒が針留めと共に昇降するとき、針留めに載せられて針留めと共に針棒の昇降に連動して高さ方向に昇降可能とされており、押さえ足は操作腕に連動して高さ方向に昇降することを特徴とする。この場合、針棒の昇降につれて針留めが昇降し、ひいては刺繍押さえが昇降される。刺繍押さえの昇降により、針板上の布等の被裁縫物の移動性が確保される。 (2) According to the sewing machine embroidery presser of aspect 2 according to the present invention, in the above aspect, the operating arm of the embroidery presser is placed on the needle clamp when the needle bar moves up and down together with the needle clamp and the needle bar together with the needle clamp. It is possible to move up and down in the height direction in conjunction with raising and lowering, and the presser foot is raised and lowered in the height direction in conjunction with the operating arm. In this case, the needle clamp moves up and down as the needle bar moves up and down, and as a result, the embroidery presser moves up and down. By moving the embroidery presser up and down, the mobility of the workpiece such as the cloth on the needle plate is secured.

（３）本発明に係る様相３のミシン刺繍押さえによれば、上記様相において、操作腕は、昇降する針留めの上死点よりも所定量ΔＨ下方に位置されており、針留めの下死点からの上死点への上昇量に対して、操作腕の上昇量は少なく設定されていることを特徴とする。
刺繍時において針棒と共に針留めが高さ方向（矢印Ｈ方向）に昇降したとしても、針留めにより持ち上げられる刺繍押さえの持ち上げ量は、針留めの昇降量に比較して少ない。このため、刺繍等の縫製時において、刺繍押さえの昇降がユーザの目障りになることが抑えられる。 (3) According to the sewing machine embroidery presser of aspect 3 according to the present invention, in the above aspect, the operating arm is positioned a predetermined amount ΔH below the top dead center of the needle clamp that moves up and down. The rising amount of the operating arm is set to be smaller than the rising amount from the point to the top dead center.
Even if the needle clasp moves up and down in the height direction (arrow H direction) together with the needle bar at the time of embroidery, the lift amount of the embroidery presser lifted by the needle clasp is smaller than the lift amount of the needle clasp. For this reason, when sewing embroidery or the like, it is possible to prevent the raising and lowering of the embroidery presser from being an obstacle to the user.

（４）本発明に係る様相４のミシン刺繍押さえによれば、上記様相において、押さえ足を前記ミシンのベッドの針板に向けて下降回動させて刺繍可能位置とさせる方向に副レバーを常時に付勢させる第１バネが設けられていることを特徴とする。操作腕と固定溝との仮固定が解除されると、第１バネにより副レバーは自動的に刺繍可能位置に設定されるので、操作性が良い。 (4) According to the sewing machine embroidery presser of aspect 4 according to the present invention, in the above aspect, the auxiliary lever is always moved in the direction in which the presser foot is lowered and rotated toward the needle plate of the bed of the sewing machine to reach the embroidery position. A first spring that biases the spring is provided. When the temporary fixing between the operating arm and the fixing groove is released, the sub-lever is automatically set to the embroidery position by the first spring, so that the operability is good.

（５）本発明に係る様相５のミシン刺繍押さえによれば、上記様相において、刺繍押さえの押さえ足は、刺繍を行う刺繍高さ位置と、刺繍高さ位置よりも高く針板から浮上する第１高さ位置と、第１高さ位置よりも高く針板から浮上する第２高さ位置に副レバーの回動操作により昇降可能とされており、副レバーのカム面のカムプロフィールは、ユーザによる副レバーの回転操作に伴い、押さえ足を、刺繍高さ位置、第１高さ位置、前記第２高さ位置に順に上昇させ、且つ、ユーザによる副レバーの回転操作が解除されると、操作腕を針板に向けて下降させることを特徴とする。本様相によれば、副レバーが回動操作されると、副レバーのカム面のカムプロフィールは、押さえ足を、刺繍高さ位置、第１高さ位置、前記第２高さ位置に順に上昇させることができる。また、ユーザによる副レバーの回転操作が解除されると、操作腕を針板に向けて下降させる。 (5) According to the sewing machine embroidery presser of aspect 5 according to the present invention, in the above aspect, the presser foot of the embroidery presser is the embroidery height position where embroidery is performed and The cam profile of the cam surface of the sub-lever can be moved up and down by rotating the sub-lever to a first height position and a second height position higher than the first height position and rising from the needle plate. When the presser foot is raised to the embroidery height position, the first height position, and the second height position in order in accordance with the rotation operation of the sublever, and the rotation operation of the sublever by the user is released, The operation arm is lowered toward the needle plate. According to this aspect, when the sub lever is rotated, the cam profile of the cam surface of the sub lever raises the presser foot in the order of the embroidery height position, the first height position, and the second height position. Can be made. When the rotation operation of the sub lever by the user is released, the operation arm is lowered toward the needle plate.

（６）本発明に係る様相６のミシン刺繍押さえによれば、上記様相において、押さえ足は、ミシンを操作するユーザに対面するように立設された透明なカバー壁をもつことを特徴とする。刺繍押さえは透明なカバー壁をもつため、刺繍等の裁縫を行うとき、ユーザの指が誤って針に接触することが抑えられ、ユーザ保護性を高め得る。更に、刺繍中に針が折れた場合であっても、折れて飛散する針に対して障壁性を高めることができ、折れた針がユーザ側に飛散することもカバー壁により抑えられる。かかる意味においてもユーザ保護性を高め得る。特許文献３のようにベッド側にカバー壁が取り付けられることも考えられるが、この場合には、刺繍押さえの取り付け作業と、カバー壁の取り付け作業との双方が必要とされる。しかし本様相によれば、透明なカバー壁は刺繍押さえと一体化されているため、刺繍押さえを押さえ棒に取り付ければ、ユーザ保護用の透明なカバー壁を自動的に取り付けることができ、作業性が良い。 (6) According to the sewing machine embroidery presser of aspect 6 according to the present invention, in the above aspect, the presser foot has a transparent cover wall erected so as to face the user who operates the sewing machine. . Since the embroidery presser has a transparent cover wall, when sewing embroidery or the like, it is possible to prevent the user's finger from coming into contact with the needle by mistake and to improve user protection. Furthermore, even when the needle is broken during embroidery, the barrier property against the needle that is broken and scattered can be enhanced, and the broken wall of the needle can be suppressed by the cover wall. In this sense, user protection can be improved. Although it is conceivable that the cover wall is attached to the bed side as in Patent Document 3, in this case, both the operation of attaching the embroidery presser and the operation of attaching the cover wall are required. However, according to this aspect, since the transparent cover wall is integrated with the embroidery presser, if the embroidery presser is attached to the presser bar, the transparent cover wall for user protection can be automatically attached, and workability is improved. Is good.

（７）本発明に係る様相７のミシンは、針を保持する針留めをもち高さ方向に昇降可能な針棒と、高さ方向に昇降可能な押さえ棒と、押さえ棒を昇降させるための押さえ上げレバーと、押さえ棒に取り付けられるミシン刺繍押さえとを具備するミシンであって、
ミシン刺繍押さえは、
（ｉ）押さえ棒の下部に取付具により取り付けられる押さえホルダと、
（ｉｉ）押さえホルダに取り付けられ針棒または針留めに持ち上げられて高さ方向に昇降する操作腕と、
（ｉｉｉ）操作腕と共に連動するように押さえホルダに昇降可能に保持されミシンの針板に対面すると共に被裁縫物を押さえる押さえ足と、
（ｉｖ）押さえホルダに設けられ押さえ足を針板に向けて付勢する付勢力をもつ押さえバネと、
（ｖ）押さえホルダに回動可能に設けられ、回動に伴い操作腕を昇降させるカムプロフィールをもつカム面と操作腕を係合させて前記押さえ足を押さえホルダ側に移動させて針板から浮上させる第１高さ位置に仮固定させる固定溝とユーザの指により操作される操作部とをもつ副レバーとを具備することを特徴とする。 (7) A sewing machine of aspect 7 according to the present invention has a needle bar that holds a needle and has a needle bar that can be raised and lowered in the height direction, a presser bar that can be raised and lowered in the height direction, and a mechanism for raising and lowering the presser bar. A sewing machine comprising a presser lifting lever and a sewing machine embroidery presser attached to the presser bar,
Sewing machine embroidery presser
(I) a holding holder that is attached to the lower part of the holding bar by a fixture;
(Ii) an operating arm attached to the holding holder and lifted up and down in the height direction by the needle bar or the needle clamp;
(Iii) a presser foot that is held up and down by the presser holder so as to be interlocked with the operating arm, faces the needle plate of the sewing machine, and presses the sewing object;
(Iv) a pressing spring provided in the pressing holder and having a biasing force that biases the pressing foot toward the needle plate;
(V) The presser holder is pivotably provided, the cam surface having a cam profile that moves the operating arm up and down with the rotation is engaged with the operating arm, and the presser foot is moved to the pressing holder side to move from the needle plate. A sub-lever having a fixing groove that is temporarily fixed at a first height position to be levitated and an operation unit that is operated by a user's finger is provided.

本発明によれば、刺繍押さえを押さえ棒に取り付けたり取り外したりするにあたり、刺繍押さえの操作腕を副レバーの固定溝に係合して仮固定させれば、刺繍押さえの押さえ足は押さえホルダ側に移動し、刺繍押さえの全体の高さ寸法は縮んでいる。このため刺繍押さえの取り付け作業、取り外し作業を容易にできる。 According to the present invention, when the embroidery presser is attached to or removed from the presser bar, the embroidery presser foot is attached to the side of the presser holder by temporarily engaging the embroidery presser operating arm with the fixing groove of the sub lever. The overall height dimension of the embroidery presser is shrinking. For this reason, it is possible to easily attach and remove the embroidery presser.

刺繍押さえが押さえ棒に取り付けられている状態をミシン正面側から視認する斜視図である。It is a perspective view which visually recognizes the state where the embroidery presser is attached to the presser bar from the sewing machine front side. 刺繍押さえが押さえ棒に取り付けられている状態をミシン裏面側から視認する斜視図である。It is a perspective view which visually recognizes the state where the embroidery presser is attached to the presser bar from the back side of the sewing machine. 刺繍押さえを分解した状態を示す斜視図である。It is a perspective view which shows the state which decomposed | disassembled the embroidery presser. 刺繍押さえを組み立てた状態を示す斜視図である。It is a perspective view which shows the state which assembled the embroidery presser. （ａ）は刺繍裁縫の状態を示す正面図であり、（ｂ）は刺繍裁縫の状態を示す側面図である。(A) is a front view which shows the state of embroidery sewing, (b) is a side view which shows the state of embroidery sewing. （ａ）は刺繍押さえ着脱時の状態を示す正面図であり、（ｂ）は刺繍押さえ着脱時の状態を示す側面図である。(A) is a front view which shows the state at the time of embroidery presser attachment / detachment, (b) is a side view which shows the state at the time of embroidery presser attachment / detachment. （ａ）は刺繍枠通過時の状態を示す正面図であり、（ｂ）は刺繍枠通過時の状態を示す側面図である。(A) is a front view which shows the state at the time of embroidery frame passage, (b) is a side view which shows the state at the time of embroidery frame passage. （ａ）はユーザエラーにより図６の状態の押さえ上げレバーを２段目から１段目に下降させた状態を示す側面図であり、（ｂ）はユーザエラーにより図６の状態の押さえ上げレバーを２段目から０段目に下降させた状態を示す側面図である。6A is a side view showing a state in which the press-up lever in the state of FIG. 6 is lowered from the second stage to the first stage due to a user error, and FIG. 6B is a side view of the press-up lever in the state of FIG. It is a side view which shows the state which lowered | hung from the 2nd step to the 0th step.

押さえホルダは、押さえ棒の下部に取付具により取り付けられる。操作腕は、押さえホルダに取り付けられるものであり、針棒の一部または針留めに持ち上げられて高さ方向に昇降する。押さえ足は、操作腕と共に連動するように押さえホルダに昇降可能に保持されており、ミシンの針板に対面すると共に被裁縫物を押さえる。押さえバネは、押さえホルダに設けられており、押さえ足を針板に向けて付勢する付勢力をもつ。副レバーは、押さえホルダに回動可能に設けられる。副レバーは、回動に伴い操作腕を昇降させるカムプロフィールをもつカム面と、操作腕を係合させて押さえ足を押さえホルダ側に移動させて針板から浮上させる第１高さ位置に仮固定させる固定溝と、ユーザの指により操作される操作部とをもつ。 The holding holder is attached to the lower part of the holding bar with a fixture. The operating arm is attached to the holding holder, and is lifted up and down in the height direction by being lifted by a part of the needle bar or the needle clamp. The presser foot is held by the presser holder so as to be interlocked with the operating arm so as to face the needle plate of the sewing machine and press the sewing object. The presser spring is provided in the presser holder and has a biasing force that biases the presser foot toward the needle plate. The sub lever is rotatably provided on the holding holder. The sub-lever temporarily moves to a first height position where the cam surface has a cam profile that raises and lowers the operating arm as it rotates, and the operating arm is engaged to move the presser foot toward the presser holder and float from the needle plate. It has a fixing groove to be fixed and an operation unit operated by a user's finger.

（実施形態）
以下、本発明の実施形態について図面を参照して説明する。図１は、ミシンの押さえ棒１３の下端部１３ｄに刺繍押さえ３を取り付けた状態を正面から示す。図２は、当該状態を裏面から示す。ミシンはマイコンを搭載しており、図１，図２に示すように、針１０を保持する針留め１１を止め具１２により保持する高さ方向（矢印Ｈ方向）に沿って昇降可能な針棒１と、高さ方向に昇降可能な押さえ棒１３と、押さえ棒１３を矢印Ｈ方向に昇降させるためにユーザが指先で回転操作する押さえ上げレバー１４と、針棒１、押さえ棒１３および押さえ上げバー１４を保持するミシン本体２と、押さえ棒１３の下端部１３ｄに取付具（螺子）３０により着脱可能に取り付けられた刺繍押さえ３とを有する。刺繍押さえ３は、刺繍時に、刺繍を行う被裁縫物としての布、その布に形成された刺繍を適宜押さえるものである。 (Embodiment)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which the embroidery presser 3 is attached to the lower end portion 13d of the presser bar 13 of the sewing machine from the front. FIG. 2 shows the state from the back side. The sewing machine is equipped with a microcomputer, and as shown in FIGS. 1 and 2, a needle bar that can be moved up and down along a height direction (arrow H direction) in which a needle holder 11 that holds a needle 10 is held by a stopper 12. 1, a presser bar 13 that can be raised and lowered in the height direction, a presser lifting lever 14 that is rotated by a user with a fingertip to raise and lower the presser bar 13 in the direction of arrow H, needle bar 1, presser bar 13, and presser lifter The sewing machine main body 2 holds the bar 14, and the embroidery presser 3 is detachably attached to the lower end portion 13d of the presser bar 13 by a fixture (screw) 30. The embroidery presser 3 appropriately presses a cloth as an object to be embroidered and the embroidery formed on the cloth at the time of embroidery.

図１に示すように、主バネ１５はミシン本体２のミシン機枠２１の着座部２１ａに着座されており、押さえ棒１３を下方（矢印Ｄ方向）に常時付勢させる付勢力を示す。なお、図１に示すように、刺繍押さえ３の構成要素である操作腕３９は、針留め１１の上側に位置しており、針棒１と共に昇降する針留め１１の矢印Ｕ方向への上昇により持ち上げられる。針棒１が昇降するとき、操作腕３９は、針留め１１に載せられて針留め１１と共に針棒１に連動して高さ方向（矢印Ｈ方向）に昇降可能とされている。従って、押さえ足３３をもつ刺繍押さえ３は、操作腕３９の昇降に連動して高さ方向に昇降する。針棒１の昇降は検知部２０により検知され、検知信号はマイコンに入力される。 As shown in FIG. 1, the main spring 15 is seated on a seating portion 21 a of a sewing machine frame 21 of the sewing machine body 2, and shows a biasing force that constantly biases the presser bar 13 downward (in the direction of arrow D). As shown in FIG. 1, the operating arm 39, which is a component of the embroidery presser 3, is located above the needle clamp 11, and the needle clamp 11 that moves up and down together with the needle bar 1 moves up in the direction of the arrow U. Lifted. When the needle bar 1 moves up and down, the operating arm 39 is placed on the needle holder 11 and can move up and down in the height direction (arrow H direction) together with the needle holder 11 in conjunction with the needle bar 1. Accordingly, the embroidery presser 3 having the presser foot 33 moves up and down in the height direction in conjunction with the operation arm 39 moving up and down. The raising and lowering of the needle bar 1 is detected by the detection unit 20, and a detection signal is input to the microcomputer.

ユーザが押さえ上げレバー１４を操作すると、それに連動して押さえ棒１３は連動して矢印Ｈ方向において昇降する。ユーザが押さえ上げレバー１４を操作すると、矢印Ｈ方向において、押さえ棒１３を、通常の裁縫位置である０段目と、０段目よりも上方の１段目と、１段目よりも上方の２段目とに押さえ上げレバー１４により固定的に仮固定できる。上糸張力調整装置（図略）はミシン本体２に搭載されており、０段目では、通常の裁縫を実行できるように、上糸を有効（上糸の張力有り状態）とさせ、１段目では、上糸を無効（上糸の張力なし状態）とさせ、２段目では、上糸を有効（上糸の張力有り状態）とさせる。このように押さえ上げレバー１４および押さえ棒１３が０段目のとき、押さえ棒１３が１段目よりも下降しており、通常の裁縫を行い得る。押さえ上げレバー１４および押さえ棒１３が１段目のとき、上糸は無効とされて上糸の張力が無くなるため、ユーザは被裁縫物としての布を針板２３上において任意に移動させ得る。押さえ上げレバー１４および押さえ棒１３が２段目のとき、押さえ棒１３が１段目よりも上昇しているため、押さえ棒１３の下端部が上昇しており、刺繍枠と押さえ棒１３の下端部との接触をユーザは気にすることなく、刺繍枠を針板２３上で任意に移動させてフリーハンド刺繍（刺繍枠をユーザが手で移動させて刺繍させるモード）を行うことができる。このような機能をもつミシンにおいて、刺繍を行うとき、押さえ棒１３の下端部に本実施形態に係る刺繍押さえ３は着脱可能に装備される。本実施形態によれば、一般的には、本実施形態に係る刺繍押さえ３を押さえ棒１３の下端部１３ｄに取付具３０で取り付けるとき、押さえ上げレバー１４は２段目Ｓ２に設定されており、押さえ棒１３は矢印Ｈ方向において２段目（図５参照）に上昇されている。その主たる理由としては、刺繍時には押さえ上げレバー１４を２段目Ｓ２に設定すること、および、針板２３と押さえ棒１３の下端部との空間を増加し、取り付け作業を容易にするためである。 When the user operates the presser lever 14, the presser bar 13 moves up and down in the direction of the arrow H in conjunction with it. When the user operates the press-up lever 14, in the direction of arrow H, the presser bar 13 is moved to the 0th stage which is the normal sewing position, the 1st stage above the 0th stage, and the 1st stage above the 1st stage. The second stage can be temporarily fixed by the press-up lever 14. The upper thread tension adjusting device (not shown) is mounted on the sewing machine main body 2. In the 0th stage, the upper thread is made effective (upper thread tension state) so that normal sewing can be executed. At the second stage, the upper thread is disabled (without the upper thread tension), and at the second stage, the upper thread is enabled (with the upper thread tension). In this way, when the presser lifting lever 14 and the presser bar 13 are at the 0th stage, the presser bar 13 is lowered from the 1st stage, and normal sewing can be performed. When the presser lifting lever 14 and the presser bar 13 are in the first stage, the upper thread is invalidated and the tension of the upper thread is lost. Therefore, the user can arbitrarily move the cloth as the sewing object on the needle plate 23. When the presser lift lever 14 and the presser bar 13 are in the second stage, the presser bar 13 is raised from the first stage, so that the lower end of the presser bar 13 is raised, and the lower end of the embroidery frame and the presser bar 13 The user can freely move the embroidery frame on the needle plate 23 and perform freehand embroidery (a mode in which the user moves the embroidery frame by hand to embroider) without worrying about contact with the part. In the sewing machine having such a function, when performing embroidery, the embroidery presser 3 according to this embodiment is detachably mounted on the lower end portion of the presser bar 13. According to this embodiment, generally, when the embroidery presser 3 according to this embodiment is attached to the lower end portion 13d of the presser bar 13 with the fixture 30, the presser lifting lever 14 is set to the second stage S2. The presser bar 13 is raised to the second stage (see FIG. 5) in the arrow H direction. The main reasons are that the press-up lever 14 is set to the second stage S2 at the time of embroidery, and the space between the needle plate 23 and the lower end portion of the presser bar 13 is increased to facilitate the mounting operation. .

図３は刺繍押さえ３を分解した状態を示す。図４は刺繍押さえ３を組み立てた状態を示す。刺繍押さえ３は、押さえ棒１３の下端部３ｄに取付具３０により取り付けられる押さえホルダ３１と、押さえホルダ３１に取り付けられ針棒１および針留め１１と共に高さ方向（矢印Ｈ方向）に昇降する操作腕３９と、押さえホルダ３１に対して昇降可能に保持され被縫製物を押さえるための押さえ足３３と、押さえホルダ３１に取り付けられるコイル状の押さえバネ３４と、押さえホルダ３１に回動可能に設けられユーザが指で回動操作する副レバー４とを有する。 FIG. 3 shows a state in which the embroidery presser 3 is disassembled. FIG. 4 shows a state in which the embroidery presser 3 is assembled. The embroidery presser 3 is an operation of moving up and down in the height direction (arrow H direction) together with the presser holder 31 attached to the lower end 3d of the presser bar 13 by the fixture 30, and the needle bar 1 and the needle clamp 11 attached to the presser holder 31. An arm 39, a presser foot 33 that is held so as to be movable up and down with respect to the presser holder 31 and presses the workpiece, a coiled presser spring 34 that is attached to the presser holder 31, and a presser holder 31 that is rotatable. And a sub-lever 4 that is rotated by a user with a finger.

図３に示すように、押さえホルダ３１は、高さ方向（矢印Ｈ方向）に延びる長孔３１ａと、上通孔３１ｂをもつ上鍔部３１ｃと、下通孔３１ｅをもつ下鍔部３１ｆと、枢支軸３２ｈと、ストッパ３２ｓと、取付具３０が螺合により取り付けられる固定部３２ｔとを有する。図３に示すように、副レバー４は、副レバー４の回転中心を形成する枢支孔４０を形成する筒部４０ｃと、回動に伴い操作腕３９を昇降させるカムプロフィールをもつカム面４２と、カム面４２に形成された固定溝４４と、ユーザの指で操作される操作部４５とを有する。カム面４２は、固定溝４４の両側にカム面４２ａ，４２ｂをもつ。 As shown in FIG. 3, the holding holder 31 includes a long hole 31a extending in the height direction (arrow H direction), an upper collar part 31c having an upper through hole 31b, and a lower collar part 31f having a lower through hole 31e. , A pivot shaft 32h, a stopper 32s, and a fixing portion 32t to which the attachment tool 30 is attached by screwing. As shown in FIG. 3, the auxiliary lever 4 has a cylindrical portion 40 c that forms a pivotal support hole 40 that forms the rotation center of the auxiliary lever 4, and a cam surface 42 that has a cam profile that raises and lowers the operating arm 39 as it rotates. And a fixing groove 44 formed in the cam surface 42 and an operation unit 45 operated by a user's finger. The cam surface 42 has cam surfaces 42 a and 42 b on both sides of the fixed groove 44.

ホルダ３１と副レバー４との間に第１バネ４６が介在するように、枢支孔４０と枢支軸３２ｈとが回転可能に嵌合して副レバー４がホルダ３１に取り付けられる。第１バネ４６はねじりコイルバネであり、ホルダ３１に係止されるアーム４６ａと、副レバー４に係止されるアーム４６ｃとをもつ。第１バネ４６は、副レバー４の操作部４５を下方（図４の矢印Ｆ方向）に付勢させる付勢力を発揮する。これにより第１バネ４６は押さえ足３３を針板２３（図５〜図８参照）に向けて下方（矢印Ｄ方向）に向けて常時付勢させる付勢力を発揮する。なお、第１バネ４６により付勢された副レバー４は、これの被ストッパ４ｓがストッパ３２ｓに当接するまで下方（矢印Ｆ方向）に回動される。 The pivotal support hole 40 and the pivotal support shaft 32 h are rotatably fitted so that the first spring 46 is interposed between the holder 31 and the secondary lever 4, and the secondary lever 4 is attached to the holder 31. The first spring 46 is a torsion coil spring and has an arm 46 a locked to the holder 31 and an arm 46 c locked to the sub lever 4. The first spring 46 exerts a biasing force that biases the operating portion 45 of the sub lever 4 downward (in the direction of arrow F in FIG. 4). As a result, the first spring 46 exerts an urging force that constantly urges the presser foot 33 downward (in the direction of arrow D) toward the needle plate 23 (see FIGS. 5 to 8). The sub lever 4 biased by the first spring 46 is rotated downward (in the direction of the arrow F) until the stoppered portion 4s contacts the stopper 32s.

押さえ足３３は透明な材料（例えば透明樹脂，透明は透明度が高い方が好ましい）で形成されており、図３に示すように、押さえ軸３５の下端部３５ｐが嵌合される軸孔３３ａをもつ軸部３３ｂと、針が挿入される針孔３３ｃをもつ底部３３ｅと、底部３３ｅよりも上方に立設されユーザに対面する透明なカバー壁３３ｈとを有する。カバー壁３３ｈは透明であるため、針元への視認性が確保される。更に、カバー壁３３ｈは、ユーザの指が針などに触れないようにする。更には、針が折損するときにおいて、針のユーザへの飛散が抑えられる。カバー壁３３ｈは、ミシンの正面に位置するユーザに対向しているものの、側方（図４に示す矢印Ｘ方向）には形成されていないため、針１０への糸通し作業に支障をきたさない。 The presser foot 33 is made of a transparent material (for example, transparent resin, transparent is preferably higher in transparency). As shown in FIG. 3, the presser foot 33 has a shaft hole 33a into which the lower end portion 35p of the presser shaft 35 is fitted. It has a shaft portion 33b, a bottom portion 33e having a needle hole 33c into which a needle is inserted, and a transparent cover wall 33h that stands up above the bottom portion 33e and faces the user. Since the cover wall 33h is transparent, visibility to the needle base is ensured. Further, the cover wall 33h prevents the user's finger from touching the needle or the like. Furthermore, when the needle breaks, scattering of the needle to the user is suppressed. Although the cover wall 33h faces the user located in front of the sewing machine, the cover wall 33h is not formed on the side (in the direction of the arrow X shown in FIG. 4), so that the threading operation to the needle 10 is not hindered. .

図３に示すように、押さえ軸３５は高さ方向に延設されており、上孔３５ａと、止め輪３５ｂを嵌合する係止溝３５ｃと、下孔３５ｄとを、押さえ軸３５の上端から下端にかけて順に有する。スプリングピン３７は、押さえ足３３の取付孔３３ｘおよび押さえ軸３５の下孔３５ｄに挿入され、これにより押さえ足３３は押さえ軸３５の下端部３５ｐに取り付けられている。なお押さえ足３３と押さえ軸３５とを一体成形しても良い。上鍔部３１ｃと下鍔部３１ｆとの間にコイル状の押さえバネ３４が介在した状態で、下通孔３２ｅおよび上通孔３１ｂに押さえ軸３５の上部が嵌合されている。押さえバネ３４はコイルバネで形成されており、止め輪３５ｂと上鍔部３１ｃとの間において弾性収縮可能に圧縮されており、押さえ棒１３ひいては押さえ足３３を下方（矢印Ｄ方向）に、つまり針板に向けて付勢させる付勢力を発揮する。 As shown in FIG. 3, the pressing shaft 35 extends in the height direction, and an upper hole 35 a, a locking groove 35 c into which the retaining ring 35 b is fitted, and a lower hole 35 d are connected to the upper end of the pressing shaft 35. From the bottom to the bottom. The spring pin 37 is inserted into the attachment hole 33 x of the presser foot 33 and the lower hole 35 d of the presser shaft 35, whereby the presser foot 33 is attached to the lower end portion 35 p of the presser shaft 35. The presser foot 33 and the presser shaft 35 may be integrally formed. The upper part of the pressing shaft 35 is fitted in the lower through hole 32e and the upper through hole 31b in a state where the coiled holding spring 34 is interposed between the upper flange part 31c and the lower flange part 31f. The presser spring 34 is formed of a coil spring and is compressed between the retaining ring 35b and the upper collar 31c so as to be elastically contractible. The presser bar 13 and the presser foot 33 are moved downward (in the direction of arrow D), that is, the needle. Demonstrate the urging force to urge toward the board.

図３に示すように、操作腕３９は、曲成部３９ａによりクランク状に曲成されており、先端部３９ｃと基端部３９ｄとをもつ。必ずしも曲成されていなくても良い。操作腕３９の先端部３９ｃは、押さえ軸３５の上孔３５ａに挿入され、更に、長孔３１ａを副レバー４側に向けて貫通している。先端部３９ｃは長孔３１ａに嵌合されているため、長孔３１ａに沿って高さ方向（矢印Ｈ方向）に昇降できるものの、横方向への変位は抑制され、押さえ軸３５は中心軸方向には回動しない。 As shown in FIG. 3, the operating arm 39 is bent in a crank shape by a bent portion 39a and has a distal end portion 39c and a proximal end portion 39d. It does not necessarily have to be composed. The distal end portion 39c of the operating arm 39 is inserted into the upper hole 35a of the pressing shaft 35, and further penetrates the long hole 31a toward the sub lever 4 side. Since the distal end portion 39c is fitted in the long hole 31a, it can be moved up and down in the height direction (arrow H direction) along the long hole 31a, but the displacement in the lateral direction is suppressed, and the pressing shaft 35 is in the central axis direction. Does not rotate.

図４に示すように、刺繍押さえ３が組み付けられた状態では、操作腕３９の先端部３９ｃは、押さえ軸３５の上端部３５ｕと共に上鍔部３１ｃから上方に露出している。更に操作腕３９の先端部３９ｃは、副レバー４のカム面４２の上方に位置した状態でカム面４２に対面している。このとき図４から理解できるように、コイル状の押さえバネ３４の付勢力は下方（矢印Ｄ方向）に作用するため、押さえ軸３５の止め輪３５ｂは下鍔部３１ｆの上面に当たり、操作部４５の先端部３９ｃは上鍔部３１ｃの上面に当たる。この状態で先端部３９ｃは副レバー４のカム面４２に対面している（図４参照）。 As shown in FIG. 4, in the state where the embroidery presser 3 is assembled, the distal end portion 39 c of the operation arm 39 is exposed upward from the upper collar portion 31 c together with the upper end portion 35 u of the presser shaft 35. Further, the distal end portion 39 c of the operating arm 39 faces the cam surface 42 in a state where it is positioned above the cam surface 42 of the sub lever 4. At this time, as can be understood from FIG. 4, since the urging force of the coil-shaped pressing spring 34 acts downward (in the direction of arrow D), the retaining ring 35b of the pressing shaft 35 hits the upper surface of the lower flange portion 31f, and the operating portion 45 The front end portion 39c of the upper end of the upper end portion 31c hits the upper surface of the upper collar portion 31c. In this state, the distal end portion 39c faces the cam surface 42 of the sub lever 4 (see FIG. 4).

このため副レバー４が枢支孔４０を中心として矢印Ｂ方向，矢印Ｆ方向に回動操作されるとき、カム面４２は操作部４５の先端部３９ｃを長孔３１ａに沿って高さ方向（矢印Ｈ方向）に昇降させることができる。操作部４５の先端部３９ｃが長孔３１ａに沿って昇降すると、押さえ軸３５および押さえ足３３が同方向に連動して昇降する。操作腕３９の先端部３９ｃは、カム面４２に沿って移動しつつ固定溝４４に係合して固定溝４４に仮固定可能とされている。後述するように、固定溝４４は、操作腕３９の先端部３９ｃを係合させて押さえ足３３をこれの第１高さ位置Ｍ１に仮固定させる。第１高さ位置Ｍ１では、押さえ足３３の底部３３ｅは針板２３から隙間寸法Ｂ５浮上された状態に維持される（図６の（ａ）（ｂ）参照）。 For this reason, when the sub lever 4 is rotated in the direction of the arrow B or the arrow F around the pivotal support hole 40, the cam surface 42 moves the tip 39c of the operation part 45 in the height direction along the long hole 31a ( It can be raised and lowered in the direction of arrow H). When the distal end portion 39c of the operation unit 45 moves up and down along the long hole 31a, the pressing shaft 35 and the pressing foot 33 move up and down in the same direction. The distal end portion 39 c of the operating arm 39 can be temporarily fixed to the fixed groove 44 by engaging with the fixed groove 44 while moving along the cam surface 42. As will be described later, the fixing groove 44 temporarily fixes the presser foot 33 to the first height position M1 by engaging the distal end portion 39c of the operating arm 39. At the first height position M1, the bottom 33e of the presser foot 33 is maintained in a state where the clearance dimension B5 is lifted from the needle plate 23 (see FIGS. 6A and 6B).

次に、刺繍押さえ３の取付形態および使用形態について図５〜図７を参照しつつ説明する。図５〜図７においていずれも、押さえ上げレバー１４は２段目Ｓ２に設定され、押さえ棒１３は２段目の高さ位置に保持されて針板２３よりも浮上している。 Next, the attachment form and usage form of the embroidery presser 3 will be described with reference to FIGS. 5 to 7, the presser lifting lever 14 is set at the second step S 2, and the presser bar 13 is held at the second step height position and floats above the needle plate 23.

図５は、第１バネ４６により副レバー４が下方に下げられて刺繍可能位置Ｐ１に設定されている状態を示す。副レバー４が刺繍可能位置Ｐ１に設定されているとき、押さえバネ３４の付勢力で押さえ足３３の底部３３ｅを下方（矢印Ｄ方向）に付勢して針板２３に押しつけている。従って、押さえ足３３の底部３３ｅと針板２３とで、布（被裁縫物）は挟まれて固定される。図５に示すように副レバー４が刺繍可能位置Ｐ１に設定されているときには、副レバー４のカム面４２と操作腕３９の先端部３９ｃの間には隙間寸法Ａ３（図５の（ｂ）参照）が発生している。従って、先端部３９ｃはカム面４２の上方に位置しつつカム面４２に非接触である。このように副レバー４が刺繍可能位置Ｐ１（図５の（ｂ）参照）では、操作腕３９の先端部３９ｃと長孔３１ａの上端３１ａｕとの間には、距離Ｗ１（図５の（ｂ）参照）が形成されている。このため操作腕３９はホルダ３１の長孔３１ａに沿って更に上昇できるため、押さえ足３３は更に相対的に上昇できる。図５に示すように副レバー４が刺繍可能位置Ｐ１に設定されているとき、ミシンが起動すると、従来技術と同様に、針棒１の上下動の１サイクルの間に、押さえ足３３は１度は上昇して針板２３上の布を押さえる力がなくなるため、ユーザは、布に刺繍しつつ、針板２３上の布を自由に移動させることができ、刺繍等の裁縫が可能となる。 FIG. 5 shows a state where the sub-lever 4 is lowered downward by the first spring 46 and set to the embroidery possible position P1. When the sub lever 4 is set at the embroidery possible position P1, the bottom 33e of the presser foot 33 is urged downward (in the direction of arrow D) by the urging force of the presser spring 34 and pressed against the needle plate 23. Accordingly, the cloth (sewing material) is sandwiched and fixed between the bottom 33e of the presser foot 33 and the needle plate 23. As shown in FIG. 5, when the sub lever 4 is set at the embroidery possible position P1, a gap dimension A3 (see (b) of FIG. 5) is formed between the cam surface 42 of the sub lever 4 and the tip 39c of the operating arm 39. Has occurred). Accordingly, the distal end portion 39 c is positioned above the cam surface 42 and is not in contact with the cam surface 42. Thus, at the position P1 where the sub lever 4 can be embroidered (see FIG. 5B), the distance W1 ((b) in FIG. 5) is provided between the distal end portion 39c of the operating arm 39 and the upper end 31au of the long hole 31a. )) Is formed. For this reason, since the operation arm 39 can further rise along the long hole 31a of the holder 31, the presser foot 33 can further rise relatively. As shown in FIG. 5, when the sewing machine is started when the sub lever 4 is set at the embroidery possible position P1, the presser foot 33 is set to 1 during one cycle of the vertical movement of the needle bar 1 as in the prior art. Since the force rises and the force to press the cloth on the needle plate 23 is lost, the user can freely move the cloth on the needle plate 23 while embroidering the cloth, and sewing such as embroidery becomes possible. .

図５に示すように副レバー４が刺繍可能位置Ｐ１に設定されているときにおいて、もし、刺繍等の裁縫が行われるととき、押さえ足３３の昇降量が大きいと、押さえ足３３が矢印Ｈ方向に大きく昇降するため、ユーザの目障りとなるおそれがある。この点本実施形態によれば、図１に示すように、針留め１１は、これの下死点と上死点との間において矢印Ｈ方向に昇降するが、操作腕３９は、針留め１１の上死点よりも微小量ΔＨ（例えば０．２〜２．０ミリメートル）下方に位置する。このため、刺繍時において針棒１と共に針留め１１が高さ方向（矢印Ｈ方向）に上昇したとしても、針留め１１により持ち上げられる操作腕３９の昇降量は、針留め１１の昇降量に比較して微小なΔＨ相当量である。ひいては刺繍押さえ３の押さえ足３３の持ち上げ量も微小量であり、特にユーザの目障りにならない。なお、針留め１１が下死点に下降するときには、操作腕３９も下降するが、押さえ足３３が針板２３に当たり、ΔＨ以上は下降しない。 As shown in FIG. 5, when the sub-lever 4 is set at the embroidery possible position P1, if sewing such as embroidery is performed, if the raising / lowering amount of the presser foot 33 is large, the presser foot 33 is moved to the arrow H. Since it moves up and down greatly in the direction, there is a possibility that it may be an obstacle to the user. In this respect, according to the present embodiment, as shown in FIG. 1, the needle clamp 11 moves up and down in the direction of the arrow H between the bottom dead center and the top dead center. Is located below the top dead center by a minute amount ΔH (for example, 0.2 to 2.0 millimeters). For this reason, even if the needle clasp 11 rises in the height direction (arrow H direction) together with the needle bar 1 at the time of embroidery, the lift amount of the operating arm 39 lifted by the needle clasp 11 is compared with the lift amount of the needle clasp 11. Thus, it is a minute amount equivalent to ΔH. As a result, the lifting amount of the presser foot 33 of the embroidery presser 3 is also a very small amount and does not particularly disturb the user. When the needle clamp 11 is lowered to the bottom dead center, the operating arm 39 is also lowered, but the presser foot 33 hits the throat plate 23 and does not descend more than ΔH.

なお、刺繍等の裁縫時には、図１から理解できるように、針棒１はこれの上死点と下死点との間を矢印Ｈ方向において昇降する。同様に、針１０を留めるために針棒１に保持されている針留め１１もこれの上死点と下死点との間を昇降する。針留め１１がこれの下死点に下降したとしても、針留め１１が針板２３上の刺繍押さえ３の押さえ足３３に衝突しないようにされている。なお、針留め１１は、針留め本体１１ａと針留め螺子１１ｃとを含む（図１参照）。 At the time of sewing such as embroidery, as can be understood from FIG. 1, the needle bar 1 moves up and down in the direction of the arrow H between the top dead center and the bottom dead center. Similarly, the needle clamp 11 held on the needle bar 1 for clamping the needle 10 also moves up and down between the top dead center and the bottom dead center. Even if the needle clamp 11 is lowered to the bottom dead center, the needle clamp 11 is prevented from colliding with the presser foot 33 of the embroidery presser 3 on the needle plate 23. The needle clamp 11 includes a needle clamp main body 11a and a needle clamp screw 11c (see FIG. 1).

図５に示す状態から、ユーザが指で副レバー４を刺繍可能位置Ｐ１から更に上方（矢印Ｂ方向）に向けて角度Ｂ１（図６の（ｂ）参照）上昇させると、副レバー４は仮固定位置Ｐ２とされる。この過程では、操作腕３９は、副レバー４のカム面４２ａに沿って移動して上向き（矢印Ｕ方向）に持ち上げられ、操作腕３９の先端部３９ｃは長孔３１ａに沿って上昇する。この結果、操作腕３９に連動して昇降する押さえ足３３も矢印Ｕ方向に上昇し、操作腕３９の先端部３９ｃは固定溝４４に係合して仮固定される（図６の（ｂ）参照）。すなわち、副レバー４は仮固定位置Ｐ２とされる。この場合、押さえ足３３の底部３３ｅはこれの第１高さ位置Ｍ１に仮固定される（図６の（ｂ）参照）。 From the state shown in FIG. 5, when the user raises the sub lever 4 with his / her finger from the embroiderable position P1 further upward (in the direction of arrow B) by an angle B1 (see FIG. 6B), the sub lever 4 temporarily moves. The fixed position P2. In this process, the operating arm 39 moves along the cam surface 42a of the sub lever 4 and is lifted upward (in the direction of the arrow U), and the distal end portion 39c of the operating arm 39 rises along the long hole 31a. As a result, the presser foot 33 that moves up and down in conjunction with the operating arm 39 is also raised in the direction of the arrow U, and the distal end portion 39c of the operating arm 39 engages with the fixing groove 44 and is temporarily fixed ((b) of FIG. 6). reference). That is, the sub lever 4 is set to the temporary fixing position P2. In this case, the bottom 33e of the presser foot 33 is temporarily fixed at the first height position M1 thereof (see FIG. 6B).

このように副レバー４が仮固定位置Ｐ２とされている状態では、係合寸法Ｂ４（図６の（ｂ）参照）は、操作腕３９の先端部３９ｃと固定溝４４の溝底面との係合量に相当する。このように副レバー４が仮固定位置Ｐ２とされている状態では、ユーザが副レバー４の操作部４５から指を離したとしても、第１バネ４６および押さえバネ３４の付勢力にも拘わらず、副レバー４は下方（矢印Ｆ方向）に回動しない。よって、副レバー４は刺繍可能位置Ｐ１から角度Ｂ１、上方に回動した仮固定位置Ｐ２に仮固定される。 Thus, in the state where the sub lever 4 is at the temporary fixing position P2, the engagement dimension B4 (see FIG. 6B) is the relationship between the tip end portion 39c of the operating arm 39 and the groove bottom surface of the fixing groove 44. It corresponds to the total amount. As described above, in the state where the sub lever 4 is at the temporarily fixed position P2, even if the user lifts his / her finger from the operation portion 45 of the sub lever 4, the first spring 46 and the pressing spring 34 are urged regardless of the urging force. The sub lever 4 does not rotate downward (in the direction of arrow F). Therefore, the sub-lever 4 is temporarily fixed at the temporary fixing position P2 rotated upward by the angle B1 from the embroidery possible position P1.

このように操作腕３９が持ち上げられる過程において、操作腕３９と一体化された押さえ軸３５および押さえ足３３は、押さえバネ３４の矢印Ｄ方向に向かう付勢力に抗しつつ、矢印Ｕ方向に上昇して針板２３から浮上する。これにより押さえ足３３の底部３３ｅは第１高さ位置Ｍ１（図６参照）となり、押さえ足３３の底部３３ｅと針板２３との間に隙間寸法Ｂ５（図６参照）が形成される。このように副レバー４の仮固定位置Ｐ２に設定されているときには、隙間寸法Ｂ５が形成されている。このため、ユーザは、副レバー４や押さえ足３３を指で持ち上げずとも、刺繍用の布を張った刺繍枠を、針板２３上において押さえ足３３の底部３３ｅの下方を任意に通過させることができる。従って、ミシンベッドへの刺繍枠のセッティングを簡単に行い得る。 In the process of lifting the operating arm 39 in this way, the holding shaft 35 and the holding foot 33 integrated with the operating arm 39 rise in the arrow U direction against the urging force of the holding spring 34 in the arrow D direction. Then, it rises from the needle plate 23. As a result, the bottom 33e of the presser foot 33 becomes the first height position M1 (see FIG. 6), and a gap dimension B5 (see FIG. 6) is formed between the bottom 33e of the presser foot 33 and the needle plate 23. As described above, when the sub-lever 4 is set to the temporarily fixed position P2, the gap dimension B5 is formed. For this reason, the user can arbitrarily pass the embroidery frame stretched with the embroidery cloth below the bottom 33e of the presser foot 33 on the needle plate 23 without lifting the sub lever 4 or the presser foot 33 with a finger. Can do. Therefore, the embroidery frame can be easily set on the sewing machine bed.

換言すると、図６に示すように、副レバー４が仮固定位置Ｐ２とされている状態では、ユーザが刺繍押さえ３の副レバー４の操作部４５から指を離したとしても、操作腕３９の先端部３９ｃが固定溝４４に係合されて仮固定されており、副レバー４は下方（矢印Ｆ方向）に回動しない。更に、押さえ足３３の底部３３ｅと針板２３との間に隙間寸法Ｂ５が形成される。このため、刺繍押さえ３を押さえ棒１３の下端部１３ｄに対して取り付けたり、取り外したりする作業が容易となる。刺繍押さえ３の着脱作業は、図６に示すように副レバー４を仮固定させた状態で行うことが一番作業性が良く、好ましい。 In other words, as shown in FIG. 6, in the state where the sub lever 4 is at the temporary fixing position P 2, even if the user releases his / her finger from the operation portion 45 of the sub lever 4 of the embroidery presser 3, The distal end portion 39c is temporarily fixed by being engaged with the fixing groove 44, and the sub lever 4 does not rotate downward (in the direction of arrow F). Further, a gap dimension B 5 is formed between the bottom 33 e of the presser foot 33 and the needle plate 23. For this reason, the operation | work which attaches or removes the embroidery presser 3 with respect to the lower end part 13d of the presser bar 13 becomes easy. The detachment work of the embroidery presser 3 is preferably performed with the auxiliary lever 4 temporarily fixed as shown in FIG.

なお、隙間寸法Ｂ５以上の高さ寸法をもつ刺繍枠を用いることも間々ある。この場合、図６に示す状態から、ユーザが指で副レバー４の操作部４５を上方（矢印Ｂ方向）に更に回動させると、つまり、副レバー４をこれの刺繍可能位置Ｐ１から角度Ｃ１持ち上げると、副レバー４のカム面４２ｂに沿って操作腕３９を更に持ち上げる。この場合、操作腕３９と一体化された押さえ軸３５および押さえ足３３も連動して矢印Ｕ方向に上昇する。このため、図７の（ａ）（ｂ）に示すように、押さえ足３３は針板２３から更に浮上して第２高さ位置Ｍ２となる。この場合、押さえ足３３の底部３３ｅと針板２３との間に、より広い隙間寸法Ｃ２（Ｃ２＞Ｂ５）が形成される。このように広い隙間寸法Ｃ２が形成されているため、高さが高い刺繍枠であっても、その刺繍枠を針板２３上において押さえ足３３の底部３３ｅの下方を通過させることもでき、背が高い刺繍枠のセッティングも容易に行い得る。 An embroidery frame having a height dimension equal to or larger than the gap dimension B5 is often used. In this case, when the user further rotates the operation portion 45 of the sub lever 4 upward (in the direction of arrow B) with the finger from the state shown in FIG. 6, that is, the sub lever 4 is moved from the embroiderable position P1 to the angle C1. When lifted, the operating arm 39 is further lifted along the cam surface 42 b of the sub lever 4. In this case, the presser shaft 35 and the presser foot 33 integrated with the operating arm 39 are also raised in the arrow U direction in conjunction with each other. For this reason, as shown in FIGS. 7A and 7B, the presser foot 33 is further lifted from the needle plate 23 to the second height position M2. In this case, a wider gap dimension C2 (C2> B5) is formed between the bottom 33e of the presser foot 33 and the needle plate 23. Since the wide gap dimension C2 is formed in this way, even an embroidery frame having a high height can pass the embroidery frame on the needle plate 23 below the bottom 33e of the presser foot 33, High embroidery frames can be easily set.

但し、図７に示すように押さえ足３３が第２高さ位置Ｍ２とされている状態では、操作腕３９と固定溝４４とは係合していない。このため、ユーザが刺繍押さえ３の副レバー４の操作部４５から指を離せば、第１バネ４６付勢力により副レバー４は下方（矢印Ｆ方向）に向けて自動的に回動し、副レバー４は仮固定位置Ｐ２（図６の（ｂ）参照）となり、押さえバネ３４の付勢力で押さえ足３３は下方に突出する。 However, when the presser foot 33 is at the second height position M2 as shown in FIG. 7, the operating arm 39 and the fixing groove 44 are not engaged with each other. For this reason, when the user releases his / her finger from the operation portion 45 of the sub-lever 4 of the embroidery presser 3, the sub-lever 4 is automatically rotated downward (in the direction of arrow F) by the first spring 46 biasing force, The lever 4 is in the temporarily fixed position P2 (see FIG. 6B), and the pressing foot 33 protrudes downward by the urging force of the pressing spring 34.

このように副レバー４を仮固定位置Ｐ２に下方に戻す理由は次のようである。すなわち、針棒１が下降して下死点に到達したときであっても、針棒１に保持されている針留め１１と刺繍押さえ３との接触を回避し、損傷を回避するためである。従って、隙間寸法Ｂ５は、針棒１が下降して下死点に到達したときであっても、針留め１１と刺繍押さえ３との接触を回避する大きさに予め設定されている。このように図７に示す状態では、操作腕３９と固定溝４４とは係合していないため、刺繍押さえ３の副レバー４の操作部４５や押さえ足３３からユーザが指を離せば、第１バネ４６の付勢力により副レバー４は下方（矢印Ｆ方向）に回動し、図６の状態に戻る。このため、ユーザが間違ってミシンを起動させて針棒１を下降させたとしても、針棒１に取り付けられている針留め１１と押さえ足３３の底部３３ｅとは接触せず、接触による針留め１１や押さえ足３３の損傷が回避される。 The reason why the sub lever 4 is returned downward to the temporary fixing position P2 in this way is as follows. That is, even when the needle bar 1 is lowered and reaches the bottom dead center, the contact between the needle clamp 11 held on the needle bar 1 and the embroidery presser 3 is avoided to avoid damage. . Accordingly, the gap dimension B5 is set in advance to a size that avoids contact between the needle clamp 11 and the embroidery presser 3 even when the needle bar 1 is lowered and reaches the bottom dead center. In this manner, in the state shown in FIG. 7, the operating arm 39 and the fixing groove 44 are not engaged, so that if the user releases the finger from the operating portion 45 or the pressing foot 33 of the sub lever 4 of the embroidery presser 3, The sub-lever 4 is rotated downward (in the direction of arrow F) by the biasing force of the one spring 46 and returns to the state shown in FIG. For this reason, even if the user accidentally starts the sewing machine and lowers the needle bar 1, the needle clamp 11 attached to the needle bar 1 and the bottom 33e of the presser foot 33 do not come into contact with each other, and the needle clamp by contact 11 and the presser foot 33 are prevented from being damaged.

本実施形態によれば、ユーザがフリーハンド刺繍等の刺繍の準備を行う場合には、前述したように、押さえ上げレバー１４を２段目Ｓ２に保持させて押さえ棒１３を２段目に設定した状態で、刺繍押さえ３を押さえ棒１３の下端部１３ｄに取付具３０（図１参照）により取り付ける。これにより図６に示す状態、または、図７に示す状態とする。図６に示す状態では、押さえ足３３の底部３３ｅと針板２３との間に隙間寸法Ｂ５が形成されるため、押さえ足３３と針板２３との間において刺繍枠を通過させてセットさせることができ、通過させた後に副レバー４を仮固定位置Ｐ２から矢印Ｆ方向に角度Ｂ１下降させれば、副レバー４は刺繍可能位置Ｐ１（図５参照）となり、刺繍を行い得る。 According to the present embodiment, when the user prepares for embroidery such as freehand embroidery, as described above, the presser lever 13 is held at the second step S2 and the presser bar 13 is set at the second step. In this state, the embroidery presser 3 is attached to the lower end portion 13d of the presser bar 13 with the fixture 30 (see FIG. 1). Thus, the state shown in FIG. 6 or the state shown in FIG. 7 is obtained. In the state shown in FIG. 6, since a gap dimension B5 is formed between the bottom 33e of the presser foot 33 and the needle plate 23, the embroidery frame is passed between the presser foot 33 and the needle plate 23 and set. If the sub-lever 4 is lowered from the temporary fixing position P2 by the angle B1 in the direction of the arrow F after passing, the sub-lever 4 becomes the embroidery possible position P1 (see FIG. 5), and embroidery can be performed.

また図７に示す状態では、押さえ足３３の底部３３ｅと針板２３との間に、より広い隙間寸法Ｃ２（Ｃ２＞Ｂ５）が形成されるため、高さが高めの刺繍枠を押さえ足３３と針板２３との間に通過させてセットさせることができるため、通過させた後にユーザが副レバー４を矢印Ｆ方向に下降させれば、副レバー４を刺繍可能位置Ｐ１（図５参照）にでき、刺繍を行い得る。 In the state shown in FIG. 7, a wider gap dimension C 2 (C 2> B 5) is formed between the bottom 33 e of the presser foot 33 and the needle plate 23. The needle lever 23 can be set between the needle plate 23 and the needle plate 23. Therefore, if the user lowers the sub lever 4 in the direction of the arrow F after the passage, the sub lever 4 is moved to the embroiderable position P1 (see FIG. 5). Can be embroidered.

なお、ユーザの実用操作では、ユーザエラーを予想して予め対処しておくことが好ましい。実用操作では、ユーザが、刺繍押さえ３を下降させるための副レバー４を下降させるのではなく、持ち上げレバー１４を不注意により操作して下降させてしまうおそれが考えられる。図８の（ａ）（ｂ）は、この場合を示す。図８の（ａ）は、ユーザが押さえ上げレバー１４を２段目Ｓ２から角度Ｄ１回動させて１段目Ｓ１に誤って下降させた状態を示す。この状態では、押さえ上げレバー１４の操作に伴い押さえ棒１３も少し下降するが、これに伴い、刺繍押さえ３の押さえ足３３も下降する。但し、図８の（ａ）に示すように押さえ足３３の底部３３ｅは針板２３に当接せず、押さえ足３３と針板２３との間には隙間寸法Ｄ５（Ｄ５＜Ｂ５）が形成される。このため、操作腕３９の先端部３９ｃを固定溝４４から離脱させる力は発生しないため、操作腕３９は固定溝４４に係合したままである（図８の（ａ）参照）。 Note that it is preferable that a user error is anticipated and dealt with in advance in the practical operation of the user. In practical operation, there is a possibility that the user may inadvertently operate the lifting lever 14 and lower it, rather than lowering the sub lever 4 for lowering the embroidery presser 3. FIGS. 8A and 8B show this case. FIG. 8A shows a state where the user accidentally lowered the press-up lever 14 from the second step S2 to the first step S1 by rotating the presser lever 14 by the angle D1. In this state, the presser bar 13 is slightly lowered as the presser lifting lever 14 is operated, and the presser foot 33 of the embroidery presser 3 is also lowered accordingly. However, as shown in FIG. 8A, the bottom 33e of the presser foot 33 does not contact the needle plate 23, and a gap dimension D5 (D5 <B5) is formed between the presser foot 33 and the needle plate 23. Is done. For this reason, since the force which separates the front-end | tip part 39c of the operating arm 39 from the fixing groove 44 does not generate | occur | produce, the operating arm 39 remains engaging with the fixing groove 44 (refer Fig.8 (a)).

これに対して、図８の（ｂ）は、ユーザが押さえ上げレバー１４をこれの２段目Ｓ２から角度Ｅ１回動させて０段目Ｓ０に誤って下降させた状態を示す。この状態では、押さえ上げレバー１４の下方操作に連動して押さえ棒１３がかなり下降するが、これに伴い、押さえ足３３の底部３３ｅは、針板２３に当たるため、押さえバネ３４の付勢力に抗して矢印Ｕ方向に相対的に持ち上げられる。ひいては押さえ足３３、押さえ軸３５および操作腕３９が、押さえホルダ３１に対して矢印Ｕ方向に相対的に持ち上げられる。結果として、操作腕３９の先端部３９ｃが固定溝４４から離脱して、長孔３１ａの上端３１ａｕに接近する（図８の（ｂ）参照）。このときの持ち上げ量は、図６に示す操作腕３９の係合寸法Ｂ４よりも大きいため、前述したように操作腕３９の先端部３９ｃはカム面４２の固定溝４４から離脱する。このように操作腕３９が固定溝４４から離脱すれば、第１バネ４６および押さえバネ３４の付勢力により、副レバー４は下方（矢印Ｆ方向）に自動的に回動して刺繍可能位置Ｐ１（図８の(ｂ)参照）に自動的に切り替えられともに、押さえ足３３は下方に突出する。このためユーザは再び押さえ上げレバー１４を２段目Ｓ２（刺繍モードのため上糸の張力は有効とされる）まで戻せば、押さえ棒１３は２段目まで矢印Ｕ方向に上昇し、自動的に図５に示す状態（刺繍可能状態）となるため、ユーザは直ちに刺繍を行い得る。 On the other hand, FIG. 8B shows a state in which the user turns the press-up lever 14 from the second stage S2 by an angle E1 and erroneously lowers it to the zeroth stage S0. In this state, the presser bar 13 is considerably lowered in conjunction with the downward operation of the presser lifting lever 14, and accordingly, the bottom 33 e of the presser foot 33 contacts the needle plate 23 and resists the urging force of the presser spring 34. Then, it is lifted relatively in the direction of arrow U. As a result, the presser foot 33, the presser shaft 35, and the operating arm 39 are lifted relative to the presser holder 31 in the arrow U direction. As a result, the distal end portion 39c of the operating arm 39 is detached from the fixed groove 44 and approaches the upper end 31au of the long hole 31a (see FIG. 8B). Since the lifting amount at this time is larger than the engagement dimension B4 of the operating arm 39 shown in FIG. 6, the distal end portion 39c of the operating arm 39 is detached from the fixing groove 44 of the cam surface 42 as described above. When the operating arm 39 is detached from the fixing groove 44 in this way, the auxiliary lever 4 is automatically rotated downward (in the direction of arrow F) by the urging force of the first spring 46 and the pressing spring 34 to enable the embroidery position P1. The presser foot 33 protrudes downward while being automatically switched to (see (b) of FIG. 8). For this reason, if the user returns the presser lift lever 14 to the second step S2 (the upper thread tension is enabled because of the embroidery mode), the presser bar 13 moves up to the second step in the direction of the arrow U and automatically Since the state shown in FIG. 5 (embroidery possible state) is established, the user can immediately perform embroidery.

以上説明したように本実施形態によれば、フリーハンド刺繍等の刺繍を行う場合には、準備として、押さえ上げレバー１４を回動操作させて押さえ棒１３を落下しないように仮固定させた状態とする。本ミシンでは、刺繍モードは、前述したように押さえ棒１３が２段目に仮固定された状態のとき設定されるためである。このように押さえ棒１３の高位置を仮固定させた状態で、刺繍押さえ３を押さえ棒１３の下端部１３ｄにユーザは手作業で取り付けることができる。 As described above, according to the present embodiment, when embroidery such as freehand embroidery is performed, as a preparation, the press-up lever 14 is rotated and temporarily fixed so that the presser bar 13 does not fall. And This is because, in this sewing machine, the embroidery mode is set when the presser bar 13 is temporarily fixed to the second stage as described above. In this manner, the user can attach the embroidery presser 3 to the lower end portion 13d of the presser bar 13 manually while the high position of the presser bar 13 is temporarily fixed.

この場合、刺繍押さえ３の操作腕３９が副レバー４のカム面４２の固定溝４４に係合されて仮固定させる。この状態であれば、押さえ足３３は、押さえバネ３４および押さえバネ３４の付勢力に抗して、押さえホルダ３１側に移動する。この結果、刺繍押さえ３の高さ寸法ＨＡ（図６参照）は、縮められている。この場合、押さえ足３３の底部３３ｅが押さえバネ３４の付勢力により押さえホルダ３１から大きく突出するように移動することは、阻止されている。このため、刺繍押さえ３の取り付けおよび取り外しにあたり、ユーザが手作業で刺繍押さえ３の押さえ足３３を押さえホルダ３１側に移動させて刺繍押さえ３の高さ寸法ＨＡを縮める作業を廃止できる。よって、ユーザの手の自由操作性が確保され、作業性を向上できる。 In this case, the operating arm 39 of the embroidery presser 3 is engaged with the fixing groove 44 of the cam surface 42 of the sub lever 4 and temporarily fixed. In this state, the presser foot 33 moves toward the presser holder 31 against the urging force of the presser spring 34 and the presser spring 34. As a result, the height dimension HA (see FIG. 6) of the embroidery presser 3 is reduced. In this case, the bottom 33 e of the presser foot 33 is prevented from moving so as to largely protrude from the presser holder 31 due to the urging force of the presser spring 34. For this reason, when attaching and removing the embroidery presser 3, it is possible to eliminate the work of the user manually moving the presser foot 33 of the embroidery presser 3 toward the presser holder 31 to reduce the height dimension HA of the embroidery presser 3. Therefore, free operability of the user's hand is ensured, and workability can be improved.

更に、刺繍押さえ３の操作腕３９が副レバー４の固定溝４４に嵌められて仮固定されている限り、副レバー４の自由回動も阻止されるため、作業性を更に向上できる。更に操作腕３９が副レバー４のカム面４２の固定溝４４に係合されて仮固定されていれば、図６の（ｂ）から理解できるように、副レバー４は針板２３から離間するように上方に移動し、副レバー４の操作部４５と針板２３との空間ＨＥを増加させている。よって、刺繍押さえ３を押さえ棒１３に作業性良く容易に取り付けることができる。 Further, as long as the operating arm 39 of the embroidery presser 3 is fitted and temporarily fixed in the fixing groove 44 of the sub lever 4, free rotation of the sub lever 4 is also prevented, so that workability can be further improved. Further, if the operation arm 39 is temporarily fixed by being engaged with the fixing groove 44 of the cam surface 42 of the sub lever 4, the sub lever 4 is separated from the needle plate 23 as can be understood from FIG. The space HE between the operating portion 45 of the sub lever 4 and the needle plate 23 is increased. Therefore, the embroidery presser 3 can be easily attached to the presser bar 13 with good workability.

更にユーザが刺繍押さえ３を押さえ棒１３に取り付けた状態では、図６の（ａ）（ｂ）に示すように、押さえ足３３は第２高さ位置Ｍ２に維持され、押さえ足３３と針板２３との間の隙間寸法Ｂ５も保持される。このため、押さえ棒１３に取り付けた押さえ足３３をユーザが針板２３から上昇させる手間も廃止でき、隙間寸法Ｂ５に刺繍枠を直ちに通して刺繍枠のセッティンクも容易となる。かかる意味においても作業性を更に向上できる。高さが高い刺繍枠であれば、前述したように、副レバー４を上方に回動させれば、更に広い隙間寸法Ｃ２（図７参照）が形成される。 Further, when the user attaches the embroidery presser 3 to the presser bar 13, the presser foot 33 is maintained at the second height position M2, as shown in FIGS. 23 is also maintained. For this reason, it is possible to eliminate the need for the user to lift the presser foot 33 attached to the presser bar 13 from the needle plate 23, and it is easy to set the embroidery frame by immediately passing the embroidery frame through the gap B5. In this sense, workability can be further improved. If the embroidery frame has a high height, as described above, if the sub lever 4 is rotated upward, a wider gap C2 (see FIG. 7) is formed.

加えて本実施形態によれば、刺繍押さえ３は、ミシン操作を行うユーザに対面する透明なカバー壁３３ｈをもつため、刺繍等の裁縫を行うとき、ユーザの指が誤って針１０に接触することが抑えられ、ユーザ保護性を高め得る。更に、刺繍中に針が折れた場合であっても、折れて飛散する針に対して障壁性を高めることができ、折れた針がユーザ側に飛散することもカバー壁３３ｈにより抑えられる。特許文献３のようにミシンのベッド側にカバー壁３３ｈが取り付けられることも考えられるが、この場合には、刺繍押さえ３の取り付け作業と、カバー壁３３ｈの取り付け作業との双方が必要とされる。しかし本実施形態によれば、前述したように透明なカバー壁３３ｈは刺繍押さえ３と一体化されているため、刺繍押さえ３を押さえ棒１３の下端部１３ｄに取り付ければ、ユーザ保護用の透明なカバー壁３３ｈを自動的に取り付けることができ、作業性が良い。 In addition, according to the present embodiment, since the embroidery presser 3 has the transparent cover wall 33h facing the user who performs the sewing operation, the user's finger mistakenly contacts the needle 10 when performing sewing such as embroidery. Can be suppressed and user protection can be improved. Further, even when the needle is broken during embroidery, the barrier property against the needle that is broken and scattered can be improved, and the broken wall is prevented from scattering to the user side by the cover wall 33h. Although it is conceivable that the cover wall 33h is attached to the bed side of the sewing machine as in Patent Document 3, in this case, both the installation work of the embroidery presser 3 and the installation work of the cover wall 33h are required. . However, according to the present embodiment, since the transparent cover wall 33h is integrated with the embroidery presser 3 as described above, if the embroidery presser 3 is attached to the lower end portion 13d of the presser bar 13, the transparent cover wall for protecting the user is provided. The cover wall 33h can be automatically attached, and the workability is good.

更に前述したように、本実施形態によれば、前述したように、刺繍時において針棒１と共に針留め１１が高さ方向（矢印Ｈ方向）に昇降したとしても、針留め１１により持ち上げられる刺繍押さえ３の持ち上げ量は、針留め１１の昇降量に比較して微小なΔＨ相当量であり、カバー壁３３ｈの昇降量も微小であり、ユーザの目障りにならない。このためカバー壁３３ｈのサイズを大きくでき、かかる意味においてもユーザ保護性を高め得る。 Further, as described above, according to the present embodiment, as described above, even if the needle clasp 11 moves up and down in the height direction (arrow H direction) together with the needle bar 1 during embroidery, the embroidery is lifted by the needle clasp 11. The amount by which the presser 3 is lifted is a small amount equivalent to ΔH compared to the amount by which the needle clamp 11 is raised and lowered, and the amount by which the cover wall 33 h is raised and lowered is also not disturbing to the user. For this reason, the size of the cover wall 33h can be increased, and user protection can be improved in this sense.

（その他）上記した実施形態によれば、刺繍押さえ３を押さえ棒１３の下端部に取付具で取り付けるとき、押さえ棒１３は２段目に上昇されているが、これに限らず、１段目に上昇されているときでも良い。押さえバネ３４はコイルバネとされているが、捻りコイルバネ、板バネ等の他のバネでも良い。押さえ足３３は透明なカバー壁３３ｈを有するが、カバー壁３３ｈを有しないものでも良い。上記した実施形態によれば、押さえ棒１３を、通常の裁縫位置である０段目（上糸張力有効）と、０段目よりも上方の１段目（上糸張力無効）と、１段目よりも上方の２段目（上糸張力有効）とに押さえ上げレバー１４により固定的に仮固定できる。但し、このようなミシンに限らず、要するに、刺繍押さえ３の取り付けのために、押さえ棒１３を所定の高さ位置に仮固定できるミシンであれば、他のミシンでも良い。操作腕３９は針棒１の針留め１１により昇降されるが、針溜め１１ではなく針棒１により直接昇降されても良い。本発明は上記し且つ図面に示した実施形態のみに限定されるものではなく、要旨を逸脱しない範囲内で適宜変更して実施できる。 (Others) According to the above-described embodiment, when the embroidery presser 3 is attached to the lower end portion of the presser bar 13 with the fixture, the presser bar 13 is raised to the second stage. Even when you are being raised. The holding spring 34 is a coil spring, but may be another spring such as a torsion coil spring or a leaf spring. The presser foot 33 has a transparent cover wall 33h, but may have no cover wall 33h. According to the above-described embodiment, the presser bar 13 is moved to the normal sewing position at the 0th stage (upper thread tension is effective), the first stage above the 0th stage (upper thread tension is invalid), and the first stage. The presser lever 14 can be temporarily fixed temporarily to the second stage (upper thread tension effective) above the eyes. However, the sewing machine is not limited to such a sewing machine. In other words, other sewing machines may be used as long as the sewing machine can temporarily fix the presser bar 13 at a predetermined height position for attaching the embroidery presser 3. The operating arm 39 is raised and lowered by the needle clamp 11 of the needle bar 1, but it may be raised and lowered directly by the needle bar 1 instead of the needle reservoir 11. The present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within the scope not departing from the gist.

１は針棒、１０は針、１１は針留め、１２は止め具、１３は押さえ棒、１４は押さえ上げレバー、２はミシン本体、２３は針板、３は刺繍押さえ、３０は取付具、３１は押さえホルダ、３１ａは長孔、３９は操作腕、３９ｃは先端部、３３は押さえ足、３３ｃは針孔、３３ｈはカバー壁、３３ｅは底部、４６は第１バネ、３４は押さえバネ、３５は押さえ軸、４は副カバー、４０は枢支孔、４２はカム面、４４は固定溝、４５は操作部、Ｐ１は刺繍可能位置、Ｐ２は仮固定位置、Ｍ１は第１高さ位置、Ｍ２は第２高さ位置を示す。 1 is a needle bar, 10 is a needle, 11 is a needle clamp, 12 is a stopper, 13 is a presser bar, 14 is a press-up lever, 2 is a sewing machine body, 23 is a needle plate, 3 is an embroidery presser, 30 is a fixture, 31 is a holder, 31a is a long hole, 39 is an operating arm, 39c is a tip, 33 is a presser foot, 33c is a needle hole, 33h is a cover wall, 33e is a bottom, 46 is a first spring, 34 is a presser spring, 35 is a pressing shaft, 4 is a sub cover, 40 is a pivot hole, 42 is a cam surface, 44 is a fixing groove, 45 is an operating portion, P1 is an embroidery position, P2 is a temporary fixing position, and M1 is a first height position. , M2 indicates a second height position.

Claims

針を保持する針留めをもち高さ方向に昇降可能な針棒と、高さ方向に昇降可能な押さえ棒と、前記押さえ棒を昇降させるための押さえ上げレバーとをもつミシンのうち、前記押さえ棒に取り付けられるミシン刺繍押さえであって、
前記押さえ棒の下部に取付具により取り付けられる押さえホルダと、
前記押さえホルダに取り付けられ前記針棒または前記針留めに持ち上げられて高さ方向に昇降する操作腕と、
前記操作腕と共に連動するように前記押さえホルダに昇降可能に保持されミシンの針板に対面すると共に被裁縫物を押さえる押さえ足と、
前記押さえホルダに設けられ前記押さえ足を前記針板に向けて付勢する付勢力をもつ押さえバネと、
前記押さえホルダに回動可能に設けられ、回動に伴い前記操作腕を昇降させるカムプロフィールをもつカム面と前記操作腕を係合させて前記押さえ足を前記押さえホルダ側に移動させて前記針板から浮上させる第１高さ位置に仮固定させる固定溝とユーザの指により操作される操作部とをもつ副レバーとを具備することを特徴とするミシン刺繍押さえ。 Of the sewing machine having a needle bar that holds a needle and that can be raised and lowered in the height direction, a presser bar that can be raised and lowered in the height direction, and a press-up lever for raising and lowering the presser bar, the presser A sewing machine embroidery presser attached to a bar,
A holding holder that is attached to the lower part of the holding bar by a fixture;
An operating arm attached to the holding holder and lifted up and down in the height direction by the needle bar or the needle clamp;
A presser foot that is held up and down by the presser holder so as to be interlocked with the operation arm, faces a needle plate of a sewing machine, and presses a sewing object;
A pressing spring provided in the pressing holder and having a biasing force that biases the pressing foot toward the needle plate;
The presser holder is pivotally provided, and a cam surface having a cam profile that moves the operating arm up and down with the rotation is engaged with the operating arm to move the presser foot toward the pressing holder and to move the needle. A sewing machine embroidery presser comprising a sub-lever having a fixing groove that is temporarily fixed at a first height position that is levitated from a plate and an operation portion that is operated by a user's finger.

請求項１において、前記刺繍押さえの前記操作腕は、前記針棒が前記針留めと共に昇降するとき、前記針留めに載せられて前記針留めと共に前記針棒の昇降に連動して高さ方向に昇降可能とされており、前記押さえ足は前記操作腕に連動して高さ方向に昇降することを特徴とするミシン刺繍押さえ。 2. The operating arm of the embroidery presser according to claim 1, wherein when the needle bar moves up and down together with the needle clasp, the operating arm is placed on the needle clasp and interlocks with the needle bar ascending and descending in the height direction. A sewing machine embroidery presser characterized in that the presser foot can be moved up and down in the height direction in conjunction with the operating arm.

請求項１〜２のうちの一項において、前記押さえ足を前記ミシンのベッドの前記針板に向けて下降回動させて前記副レバーを刺繍可能位置とさせる方向に付勢させる第１バネが設けられていることを特徴とするミシン刺繍押さえ。 3. The first spring according to claim 1, wherein the first spring biases the presser foot downwardly toward the needle plate of the bed of the sewing machine to urge the auxiliary lever to the embroidery position. Sewing machine embroidery press characterized by being provided.

請求項１〜３のうちの一項において、前記刺繍押さえの前記押さえ足は、刺繍を行う刺繍高さ位置と、前記刺繍高さ位置よりも高く且つ前記針板から浮上する第１高さ位置と、前記第１高さ位置よりも高く且つ前記針板から浮上する第２高さ位置に前記副レバーの回動操作により昇降可能とされており、
前記副レバーの前記カム面のカムプロフィールは、ユーザによる前記副レバーの回転操作に伴い、前記押さえ足を、前記刺繍高さ位置、前記第１高さ位置、前記第２高さ位置に順に上昇させ、且つ、
ユーザによる前記副レバーの回転操作が解除されると、前記操作腕を前記針板に向けて下降させることを特徴とするミシン刺繍押さえ。 4. The presser foot of the embroidery presser according to claim 1, wherein the presser foot of the embroidery presser is an embroidery height position where embroidery is performed, and a first height position which is higher than the embroidery height position and floats from the needle plate. And can be moved up and down by rotating the sub lever to a second height position higher than the first height position and rising from the needle plate,
The cam profile of the cam surface of the sub-lever ascends the presser foot to the embroidery height position, the first height position, and the second height position as the sub-lever is rotated by the user. And
The sewing machine embroidery presser, wherein when the rotation operation of the sub lever by the user is released, the operating arm is lowered toward the needle plate.

請求項１〜４のうちの一項において、前記押さえ足は、ミシンを操作するユーザに対面するように立設された透明なカバー壁をもつことを特徴とするミシン刺繍押さえ。 5. The sewing machine embroidery presser according to claim 1, wherein the presser foot has a transparent cover wall erected so as to face a user who operates the sewing machine. 6.

針を保持する針留めをもち高さ方向に昇降可能な針棒と、高さ方向に昇降可能な押さえ棒と、前記押さえ棒を昇降させるための押さえ上げレバーと、前記押さえ棒に取り付けられるミシン刺繍押さえとを具備するミシンであって、
前記ミシン刺繍押さえは、
前記押さえ棒の下部に取付具により取り付けられる押さえホルダと、
前記押さえホルダに取り付けられ前記針棒または前記針留めに持ち上げられて高さ方向に昇降する操作腕と、
前記操作腕と共に連動するように前記押さえホルダに昇降可能に保持されミシンの針板に対面すると共に被裁縫物を押さえる押さえ足と、
前記押さえホルダに設けられ前記押さえ足を前記針板に向けて付勢する付勢力をもつ押さえバネと、
前記押さえホルダに回動可能に設けられ、回動に伴い前記操作腕を昇降させるカムプロフィールをもつカム面と前記操作腕を係合させて前記押さえ足を前記押さえホルダ側に移動させて前記針板から浮上させる第１高さ位置に仮固定させる固定溝とユーザの指により操作される操作部とをもつ副レバーとを具備することを特徴とするミシン。 A needle bar that has a needle clamp to hold the needle and that can be raised and lowered in the height direction, a presser bar that can be raised and lowered in the height direction, a press-up lever for raising and lowering the presser bar, and a sewing machine that is attached to the presser bar A sewing machine having an embroidery presser,
The sewing machine embroidery presser is
A holding holder that is attached to the lower part of the holding bar by a fixture;
An operating arm attached to the holding holder and lifted up and down in the height direction by the needle bar or the needle clamp;
A presser foot that is held up and down by the presser holder so as to be interlocked with the operation arm, faces a needle plate of a sewing machine, and presses a sewing object;
A pressing spring provided in the pressing holder and having a biasing force that biases the pressing foot toward the needle plate;
The presser holder is pivotally provided, and a cam surface having a cam profile that moves the operating arm up and down with the rotation is engaged with the operating arm to move the presser foot toward the pressing holder and to move the needle. A sewing machine comprising: a sub-lever having a fixing groove that is temporarily fixed to a first height position that is levitated from a plate;