JP2015146857A - Presser device for embroidery sewing machine - Google Patents

Presser device for embroidery sewing machine Download PDF

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JP2015146857A
JP2015146857A JP2014020248A JP2014020248A JP2015146857A JP 2015146857 A JP2015146857 A JP 2015146857A JP 2014020248 A JP2014020248 A JP 2014020248A JP 2014020248 A JP2014020248 A JP 2014020248A JP 2015146857 A JP2015146857 A JP 2015146857A
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needle
sewing
stop member
presser
limit position
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JP6331434B2 (en
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雄太 砂山
Yuta Sunayama
雄太 砂山
辰弥 鈴木
Tatsuya Suzuki
辰弥 鈴木
晶寛 甲斐
Akihiro Kai
晶寛 甲斐
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Aisin Corp
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Aisin Seiki Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a presser device capable of preventing a foreign body from being put between a needle fastening member and a sewing plane.SOLUTION: A presser device 1 includes: an attachment part 2 fixed to a presser bar 81; a slide shaft 3 supported by the attachment part 2 so as to be movable in a shaft direction in a vertical direction; an engagement arm 4 which is connected to the slide shaft 3 and includes a rotary member 42 located directly above a needle fastening member 83 and arranged at a height position between the upper limit position and the lower limit position of the needle fastening member 83 when the slide shaft 3 is located at a lower limit position; a presser part 5 which is connected to a lower end part 32 of the slide shaft 3 and includes a presser plate 52 formed so as to be able to come into contact with the surface of a sewing object H arranged on a sewing plane; and a protection part 6 which is connected to the lower end part 32 of the slide shaft 3 and is arranged so as to cover an area including a part directly below the needle fastening member 83 in an area within the sewing plane.

Description

本発明は、刺繍ミシンの押え装置に関する。   The present invention relates to a presser device for an embroidery sewing machine.

縫製作業時に縫製物を押える刺繍ミシンの押え装置は、例えば特許文献1に示すように、押え棒に固定される取付部と、鉛直方向に沿って上限位置と下限位置との間を移動可能に取付部に支持される摺動軸と、摺動軸に連結された係合腕と、摺動軸の下方端部に接続された押え部とを備える。係合腕は、針止部材に当接可能な当接部を備える。また、摺動軸と取付部との間にバネが介装されており、このバネの弾性力により摺動軸が下方向に付勢される。そして、針棒の鉛直方向に沿った往復移動に連動して針止部材に当接部が当接することにより、摺動軸及び摺動軸の下方端部に接続された押え部が上下動する。押え部が下方移動した場合に押え部により布等の縫製物が押えられる。また、押え部が上方移動した場合に縫製物は押え部に押えられていない。このときに縫製物を移動させることができる。縫製中に縫製物を移動させることによって、様々な刺繍模様を縫製物に描くことができる。   A presser device for an embroidery sewing machine that presses a sewing product during sewing work is movable between an attachment portion fixed to a presser bar and an upper limit position and a lower limit position along the vertical direction, as shown in Patent Document 1, for example. A sliding shaft supported by the mounting portion; an engagement arm coupled to the sliding shaft; and a presser portion connected to a lower end portion of the sliding shaft. The engagement arm includes a contact portion that can contact the needle stop member. Further, a spring is interposed between the sliding shaft and the mounting portion, and the sliding shaft is urged downward by the elastic force of this spring. Then, when the abutting portion comes into contact with the needle stop member in conjunction with the reciprocating movement of the needle bar along the vertical direction, the slide shaft and the presser portion connected to the lower end portion of the sliding shaft move up and down. . When the presser part moves downward, the sewing product such as cloth is pressed by the presser part. Further, when the presser part moves upward, the sewing product is not pressed by the presser part. At this time, the sewing product can be moved. By moving the sewing product during the sewing, various embroidery patterns can be drawn on the sewing product.

実開平5−60477号公報Japanese Utility Model Publication No. 5-60477

(発明が解決しようとする課題)
縫製作業中、縫製作業者は、往復移動する縫い針の針元付近に注視するものの、それ以外の部分、例えば縫い針の往復移動に連動して往復移動する針止部材には注視しない。このため、針止部材が下方に移動したときに針止部材の直下位置に異物(例えば作業者の指先、或いは刺繍枠等)が入り込み、針止部材と縫製物が配設されている平面(例えば針板の上面)との間に異物が挟み込まれる虞がある。
(Problems to be solved by the invention)
During the sewing operation, the sewing manufacturer pays attention to the vicinity of the needle base of the sewing needle that reciprocates, but does not pay attention to other portions, for example, the needle stop member that reciprocates in conjunction with the reciprocating movement of the sewing needle. For this reason, when the needle stop member moves downward, a foreign object (for example, an operator's fingertip or an embroidery frame) enters a position immediately below the needle stop member, and the needle stop member and the plane on which the sewing product is disposed ( For example, foreign matter may be caught between the upper surface of the needle plate).

本発明は、針止部材と縫製物が配設されている平面(縫製平面)との間における異物の挟み込みを防止することができる押え装置を提供することを目的とする。   An object of the present invention is to provide a presser device that can prevent foreign matter from being caught between a needle stop member and a plane (sewing plane) on which a sewing product is disposed.

(課題を解決するための手段)
本発明は、押え棒と、鉛直方向に沿って往復移動可能な針棒と、針棒と共に鉛直方向に沿って上限位置と下限位置との間を往復移動可能であり針棒に縫い針を取付ける針止部材と、を備える刺繍ミシンに適用され、鉛直方向に垂直な縫製平面上に配設された縫製物を押える押え装置であって、押え棒に固定される取付部と、鉛直方向に沿って上限位置と下限位置との間を移動可能に取付部に支持される摺動軸と、摺動軸に連結されるとともに、針止部材の直上位置であって摺動軸が摺動軸の下限位置にあるときに針止部材の上限位置と下限位置との間の所定位置に配置される当接部を備える係合腕と、摺動軸の下方端部に接続されるとともに、摺動軸が下限位置にあるときに縫製平面上に配設された縫製物の表面に接触する押え部と、摺動軸の下方端部に接続されるとともに、縫製平面内の領域のうち針止部材の直下を含む領域を覆うように配設された防御部と、を備える、押え装置を提供する。この場合において、押え装置は、摺動軸を下方に付勢する付勢部材を更に備えると良い。
(Means for solving the problem)
The present invention provides a presser bar, a needle bar that can reciprocate along a vertical direction, and a needle bar that can reciprocate between an upper limit position and a lower limit position along a vertical direction, and attaches a sewing needle to the needle bar. A presser device that is applied to an embroidery sewing machine that includes a needle stop member, and that presses a sewing product disposed on a sewing plane perpendicular to the vertical direction, an attachment portion fixed to the presser bar, and a vertical direction The sliding shaft is supported by the mounting portion so as to be movable between the upper limit position and the lower limit position, and is connected to the sliding shaft. An engagement arm having a contact portion disposed at a predetermined position between the upper limit position and the lower limit position of the needle stop member when in the lower limit position, and connected to the lower end portion of the slide shaft and sliding The presser part that contacts the surface of the sewing product arranged on the sewing plane when the shaft is in the lower limit position, and the sliding shaft It is connected to the lower end, and a protection portion disposed so as to cover a region including the right under the stapling member in a region of the sewing plane, to provide a presser device. In this case, the presser device may further include a biasing member that biases the sliding shaft downward.

本発明によれば、摺動軸の下方端部に接続される防御部が、縫製平面内の領域のうち針止部材の直下を含む領域を覆うように配設される。従って、このような領域を覆うように配置された防御部にガードされることによって、異物が針止部材の直下に入り込むことが防止される。このため針止部材が下方に移動したときに針止部材と縫製平面との間に異物が挟まれることが防止される。   According to the present invention, the defense portion connected to the lower end portion of the sliding shaft is disposed so as to cover the region including the region immediately below the needle stop member in the region within the sewing plane. Therefore, it is prevented by a guard part arranged so as to cover such an area that foreign matter enters directly below the needle stop member. This prevents foreign matter from being caught between the needle stop member and the sewing plane when the needle stop member moves downward.

本発明において、「縫製平面」とは、鉛直方向に垂直な平面であって縫製物の縫製時にその縫製物が配設される平面を意味する。例えば、ミシンベッドの上面や、針板の上面が、縫製平面に当たる。また、本発明において、「針止部材の直下を含む領域」は、縫製平面内の領域のうち針止部材の全ての構成の直下を含む領域でも良いが、針止部材の一部の構成の直下を含む領域でもよいし、さらに、針止部材の一部の構成の一部の直下のみを含む領域でもよい。すなわち、針止部材が下方移動したときに、異物が針止部材に干渉できなくなるような領域に防御部が配設されていればよい。   In the present invention, the “sewing plane” means a plane that is perpendicular to the vertical direction and on which the sewn product is disposed when the sewn product is sewn. For example, the upper surface of the sewing machine bed and the upper surface of the needle plate hit the sewing plane. Further, in the present invention, the “region including the portion directly below the needle stop member” may be a region including the portion directly below all the configurations of the needle stop member in the region within the sewing plane. It may be a region including a portion directly below, or may be a region including a portion directly below a part of the configuration of a part of the needle stop member. That is, it is only necessary that the protection unit is disposed in an area where foreign matter cannot interfere with the needle stop member when the needle stop member moves downward.

防御部の前方端には、上方に向かって立設した前方壁が形成されているのがよい。ここで、防御部の「前方端」とは、本発明に係る押え装置が取付けられている刺繍ミシンから見て前方の端部を意味する。これによれば、防御部の前方端に形成された前方壁に例えば作業者の指先が干渉することにより、作業者の指先が前方側から針止部材の直下位置に近づくことが防止される。このため針止部材が下方に移動したときに針止部材と縫製平面との間に例えば作業者の指先が挟まれることが防止される。   A front wall erected upward may be formed at the front end of the defense part. Here, the “front end” of the defense means the front end as viewed from the embroidery sewing machine to which the presser device according to the present invention is attached. According to this, for example, the operator's fingertip interferes with the front wall formed at the front end of the protection portion, thereby preventing the operator's fingertip from approaching the position directly below the needle stop member from the front side. For this reason, when a needle stop member moves below, it is prevented that an operator's fingertip is pinched between a needle stop member and a sewing plane, for example.

上記前方壁の鉛直方向に沿った長さ(高さ)は、作業者の指がそれを乗り越えない程度であれば、任意の長さに設定することができる。   The length (height) along the vertical direction of the front wall can be set to any length as long as the operator's finger does not get over it.

また、防御部が、摺動軸の下方端部から側方に突出した突出端部を有するのがよい。ここで、「側方」とは、本発明に係る押え装置が取付けられているミシンから見て右側方向或いは左側方向である。これによれば、刺繍枠を用いて縫製する場合において、刺繍枠を側方に移動させた場合に、刺繍枠が突出端部に干渉することにより、刺繍枠が側方側からそれ以上、針止部材の直下の位置に近づくことが防止される。このため針止部材が下方に移動したときに針止め部材と縫製平面との間に例えば刺繍枠が挟まれて刺繍枠が破損することが防止される。   Moreover, it is good for a defense part to have the protrusion edge part which protruded to the side from the lower end part of the sliding shaft. Here, the “side” means the right side direction or the left side direction when viewed from the sewing machine to which the presser device according to the present invention is attached. According to this, when the embroidery frame is used for sewing, when the embroidery frame is moved to the side, the embroidery frame interferes with the protruding end portion, so that the embroidery frame is further removed from the side. Access to a position directly below the stop member is prevented. For this reason, when the needle stop member moves downward, for example, an embroidery frame is sandwiched between the needle stop member and the sewing plane to prevent the embroidery frame from being damaged.

また、防御部の側方端に、上方に向かって立設した側方壁が形成されているのがよい。これによれば、防御部の側方端に形成された側方壁に例えば作業者の指先が干渉することにより、作業者の指先が側方側からそれ以上、針止部材の直下の位置に近づくことが防止される。このため針止部材が下方に移動したときに針止部材と縫製平面との間に例えば作業者の指先が挟まれることが防止される。   Moreover, it is preferable that a side wall standing upward is formed at a side end of the defense part. According to this, when the fingertip of the operator interferes with the side wall formed at the side end of the defense unit, for example, the operator's fingertip is further from the side to a position directly below the needle stop member. It is prevented from approaching. For this reason, when a needle stop member moves below, it is prevented that an operator's fingertip is pinched between a needle stop member and a sewing plane, for example.

また、係合腕の当接部は、弾性体により形成されるとともに、前後方向に平行な軸周りに回転可能な回転部材により構成されるとよい。ここで、「前後方向」とは、本発明に係る押え装置が取付けられている刺繍ミシンから見て前方及び後方により表わされる軸方向を意味する。この前後方向は、側方向に対して直交する。   Further, the contact portion of the engaging arm is preferably formed of an elastic body and a rotating member that can rotate around an axis parallel to the front-rear direction. Here, the “front-rear direction” means an axial direction represented by the front and rear as viewed from the embroidery sewing machine to which the presser device according to the present invention is attached. This front-rear direction is orthogonal to the side direction.

係合腕の当接部は針止部材の直上に位置し、且つ、鉛直方向における針止部材の移動範囲内の高さ位置に配置されているため、針止部材が往復移動した場合に、当接部が針止部材に当接する。このとき針棒が側方に移動した場合、針止部材も側方に移動する。針止部材の側方への移動動作時に、針止部材の表面が当接部に擦られて針止部材が摩耗する虞がある。これに対し、本発明によれば、当接部が前後方向に平行な軸周りに回転可能な回転部材により構成されているので、針止部材が側方に移動した場合には、回転部材が回転することにより、回転部材と針止部材が転がり接触する。このため両者の摩擦力が軽減されて、針止部材の摩耗が軽減される。さらに、回転部材は弾性体で形成されているので、回転部材と針止部材との当接時に回転部材が弾性変形することにより回転部材と針止部材が面当たりする。このため接触面積が拡大し、回転部材と針止部材との当接時に針止部材に作用する単位面積当たりの衝撃力が緩和される。その結果、針止部材の摩耗をより一層軽減することができる。   Since the contact portion of the engagement arm is located immediately above the needle stop member and is disposed at a height position within the movement range of the needle stop member in the vertical direction, when the needle stop member reciprocates, The contact portion contacts the needle stop member. At this time, when the needle bar moves to the side, the needle stop member also moves to the side. When the needle stop member is moved to the side, the surface of the needle stop member may be rubbed against the contact portion and the needle stop member may be worn. On the other hand, according to the present invention, since the contact portion is constituted by a rotating member that can rotate around an axis parallel to the front-rear direction, when the needle stop member moves to the side, the rotating member By rotating, the rotating member and the needle stop member are in rolling contact. For this reason, both frictional forces are reduced and wear of the needle stop member is reduced. Furthermore, since the rotating member is formed of an elastic body, the rotating member and the needle stop member come into contact with each other when the rotating member is elastically deformed when the rotating member and the needle stop member abut. For this reason, the contact area is expanded, and the impact force per unit area acting on the needle stop member when the rotating member and the needle stop member are brought into contact with each other is reduced. As a result, wear of the needle stop member can be further reduced.

この場合において、回転部材は、弾性体であり且つ耐摩耗性の高いエンジニアリングプラスチックにより形成されていると良い。例えば、回転部材の材質は、ポリアセタール、或いは、ナイロン(登録商標)等のポリアミドであるのがよい。   In this case, the rotating member is preferably an elastic body and formed of engineering plastic having high wear resistance. For example, the material of the rotating member may be polyacetal or polyamide such as nylon (registered trademark).

本実施形態に係る刺繍ミシンの押え装置の斜視図である。It is a perspective view of the presser device of an embroidery sewing machine concerning this embodiment. 縫い針が下方移動して下死点位置に到達した場合における、針元付近を示す図である。It is a figure which shows the needle vicinity vicinity when a sewing needle moves downward and reaches | attains a bottom dead center position. 刺繍枠を用いて縫製作業を実行する場合における針元付近を示す図である。It is a figure which shows the needle vicinity vicinity in the case of performing a sewing operation | work using an embroidery frame. 針止部材のボス部と係合腕の回転部材との当接状態を示す図である。It is a figure which shows the contact state of the boss | hub part of a needle stop member, and the rotation member of an engagement arm. 変形例に係る押え装置を示す平面図である。It is a top view which shows the presser apparatus which concerns on a modification. 変形例に係る押え装置を示す斜視図である。It is a perspective view which shows the pressing device which concerns on a modification.

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、本実施形態に係る刺繍ミシンの押え装置1の斜視図である。この押え装置1が適用される刺繍ミシンは、押え装置1が取付けられる押え棒81と、縫い針Nが取付けられる針棒82と、針棒82に縫い針Nを取付けるための針止部材83と、を備える。押え棒81及び針棒82は、刺繍ミシンのアーム部側に取付けられる。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a presser device 1 for an embroidery sewing machine according to the present embodiment. The embroidery sewing machine to which the presser device 1 is applied includes a presser bar 81 to which the presser device 1 is attached, a needle bar 82 to which the sewing needle N is attached, and a needle stop member 83 for attaching the sewing needle N to the needle bar 82. . The presser bar 81 and the needle bar 82 are attached to the arm portion side of the embroidery sewing machine.

針棒82は、軸方向に沿って上下に往復移動する。なお、図1及び他の図において、針棒82の上下移動方向を鉛直方向と定義し、鉛直方向に垂直な方向を水平方向と定義する。また、水平方向のうち、刺繍ミシンの背面側から前面側(縫製者が配置する側)に向かう方向を前方と定義し、その反対方向を後方と定義し、前方及び後方により表わされる軸方向を前後方向と定義する。さらに、水平方向のうち、刺繍ミシンの右側面から左側面に向かう方向を左側方と定義し、その反対方向を右側方と定義し、左側方及び右側方により表わされる軸方向を側方向と定義する。鉛直方向軸、前後方向軸、及び側方向軸は、それぞれ直交する。本実施形態において、針棒82は、上述したように鉛直方向に往復移動可能であるとともに、側方向にも移動可能に構成される。   The needle bar 82 reciprocates up and down along the axial direction. In FIG. 1 and other drawings, the vertical movement direction of the needle bar 82 is defined as the vertical direction, and the direction perpendicular to the vertical direction is defined as the horizontal direction. Also, of the horizontal directions, the direction from the back side of the embroidery sewing machine to the front side (side on which the sewer is placed) is defined as the front, the opposite direction is defined as the back, and the axial direction represented by the front and back It is defined as the front-rear direction. Furthermore, of the horizontal directions, the direction from the right side to the left side of the embroidery sewing machine is defined as the left side, the opposite direction is defined as the right side, and the axial direction represented by the left and right sides is defined as the side direction. To do. The vertical direction axis, the front-rear direction axis, and the side direction axis are orthogonal to each other. In the present embodiment, the needle bar 82 is configured to reciprocate in the vertical direction as described above, and also to move in the lateral direction.

針止部材83は、針棒保持部831と、円筒状のボス部832と、ネジ833とを備える。針棒保持部831には鉛直方向に貫通した孔が形成され、この孔内に針棒82の下端部分が挿入される。また、針棒82の下端部分には軸方向に沿ってスリット821が形成されていて、縫い針Nの基端部分がスリット821内に挿通される。さらに、スリット821に連通するように針棒82の径方向に沿って横孔が針棒82の下端部分に形成されている。   The needle stop member 83 includes a needle bar holding portion 831, a cylindrical boss portion 832, and a screw 833. A hole penetrating in the vertical direction is formed in the needle bar holding portion 831, and the lower end portion of the needle bar 82 is inserted into the hole. A slit 821 is formed in the lower end portion of the needle bar 82 along the axial direction, and the proximal end portion of the sewing needle N is inserted into the slit 821. Further, a lateral hole is formed in the lower end portion of the needle bar 82 along the radial direction of the needle bar 82 so as to communicate with the slit 821.

また、針棒保持部831の左側面にボス部832が形成される。ボス部832の中心軸は、針棒82に形成された横孔の中心に位置合わせされる。ボス部832の内周に雌ネジが形成される。スリット821内の縫い針Nを針棒82に固定する場合、ネジ833をボス部832に螺合させる。ネジ833をボス部832に螺合していくにつれて、ネジ833の先端部分がボス部832から針棒82に形成された横孔を経由してスリット821に進入する。スリット821に進入したネジ833の先端が縫い針Nを針棒82に押し付けることにより、縫い針Nが針棒82に強固に固定される。針棒82に縫い針Nが固定された状態では、縫い針Nの先端が下方を向くとともに、縫い針Nの軸方向と針棒82の軸方向が一致する。   A boss portion 832 is formed on the left side surface of the needle bar holding portion 831. The central axis of the boss portion 832 is aligned with the center of the horizontal hole formed in the needle bar 82. A female screw is formed on the inner periphery of the boss portion 832. When the sewing needle N in the slit 821 is fixed to the needle bar 82, the screw 833 is screwed into the boss portion 832. As the screw 833 is screwed into the boss portion 832, the tip portion of the screw 833 enters the slit 821 from the boss portion 832 via a lateral hole formed in the needle bar 82. When the tip of the screw 833 entering the slit 821 presses the sewing needle N against the needle bar 82, the sewing needle N is firmly fixed to the needle bar 82. In a state where the sewing needle N is fixed to the needle bar 82, the tip end of the sewing needle N faces downward, and the axial direction of the sewing needle N coincides with the axial direction of the needle bar 82.

押え棒81は針棒82の近くに設けられ、その軸方向が鉛直方向に平行であるように刺繍ミシンに取付けられる。この押え棒81に、本実施形態に係る押え装置1が取付けられる。押え装置1は、取付部2と、摺動軸3と、係合腕4と、押え部5と、防御部6と、圧縮バネ7とを備える。   The presser bar 81 is provided near the needle bar 82, and is attached to the embroidery sewing machine so that its axial direction is parallel to the vertical direction. The presser device 1 according to this embodiment is attached to the presser bar 81. The presser device 1 includes an attachment portion 2, a sliding shaft 3, an engagement arm 4, a presser portion 5, a defense portion 6, and a compression spring 7.

取付部2は、ブラケット部21と支持部22とを有する。ブラケット部21は、ネジ等の締結部材23を介して押え棒81の下方部分に固定される。このブラケット部21に支持部22が連結される。支持部22は、上壁部221と、上壁部221よりも下方に位置する下壁部222と、鉛直壁部223とを有する。上壁部221と下壁部222は鉛直方向に対面配置される。鉛直壁部223は上壁部221の後方端と下壁部222の後方端とを接続する。   The attachment portion 2 includes a bracket portion 21 and a support portion 22. The bracket portion 21 is fixed to a lower portion of the presser bar 81 through a fastening member 23 such as a screw. A support portion 22 is connected to the bracket portion 21. The support part 22 includes an upper wall part 221, a lower wall part 222 positioned below the upper wall part 221, and a vertical wall part 223. The upper wall part 221 and the lower wall part 222 are arranged facing each other in the vertical direction. The vertical wall portion 223 connects the rear end of the upper wall portion 221 and the rear end of the lower wall portion 222.

上壁部221及び下壁部222には、それぞれ鉛直方向に貫通した貫通孔が同心状に形成される。これらの孔に摺動軸3が挿通される。従って、摺動軸3は、その軸方向が鉛直方向に平行であるように配置される。   In the upper wall portion 221 and the lower wall portion 222, through holes penetrating in the vertical direction are formed concentrically. The sliding shaft 3 is inserted through these holes. Therefore, the sliding shaft 3 is arranged so that its axial direction is parallel to the vertical direction.

摺動軸3の上方端部31は支持部22の上壁部221から上方に突出し、下方端部32は支持部22の下壁部222から下方に突出する。また、摺動軸3の軸方向における上壁部221と下壁部222との間の中央部分33には、ピン34が取付けられる。ピン34は、支持部22の鉛直壁部223に鉛直方向に沿って形成されたスリット223aの内壁部分に係合する。斯かる係合によって、摺動軸3の軸周り回転が防止される。このようにして、摺動軸3は、鉛直方向に沿って軸方向移動可能、すなわち鉛直方向に沿ってその上限位置と下限位置との間を移動可能であり、それ以外の方向に移動不能に取付部2に支持される。   The upper end portion 31 of the sliding shaft 3 protrudes upward from the upper wall portion 221 of the support portion 22, and the lower end portion 32 protrudes downward from the lower wall portion 222 of the support portion 22. A pin 34 is attached to the central portion 33 between the upper wall portion 221 and the lower wall portion 222 in the axial direction of the sliding shaft 3. The pin 34 engages with an inner wall portion of a slit 223a formed in the vertical wall portion 223 of the support portion 22 along the vertical direction. Such engagement prevents rotation of the sliding shaft 3 around the axis. In this way, the sliding shaft 3 can move in the axial direction along the vertical direction, that is, move between the upper limit position and the lower limit position along the vertical direction, and cannot move in the other directions. Supported by the mounting portion 2.

また、摺動軸3の中央部分33の周りに圧縮バネ7(付勢部材)が配設される。圧縮バネ7の上端は上壁部221の下面に係止され、圧縮バネ7の下端は摺動軸3の中央部分33に係止される。従って、圧縮バネ7の伸長力によって、摺動軸3は下方に付勢される。   A compression spring 7 (biasing member) is disposed around the central portion 33 of the sliding shaft 3. The upper end of the compression spring 7 is locked to the lower surface of the upper wall portion 221, and the lower end of the compression spring 7 is locked to the central portion 33 of the sliding shaft 3. Accordingly, the sliding shaft 3 is biased downward by the extension force of the compression spring 7.

摺動軸3の下方端部32に押え部5が接続される。押え部5は、摺動軸3の下方端部32にネジ53を介して連結された保持部51と、保持部51に連結した押えプレート52とを有する。押えプレート52は、例えばアクリル樹脂或いはポリカーボネート樹脂等の透明樹脂により形成される。押えプレート52は、本実施形態では鉛直方向から見て略楕円状を呈し、その中央に針落ち孔52aが形成される。針落ち孔52aは、針棒82及び縫い針Nの直下に位置する。針落ち孔52aを囲うように形成された押えプレート52は、縫製平面上に配設された縫製物Hの表面(上面)に接触可能に構成される。ここで、「縫製平面」とは、刺繍ミシンにより縫製される縫製物Hが配設される平面を意味する。縫製平面は、針棒82よりも下方に位置し、且つ、鉛直方向に垂直な平面である。本実施形態では、具体的には、縫製平面は、ミシンベッドの上面に設けられた針板の上面である。   The presser portion 5 is connected to the lower end portion 32 of the slide shaft 3. The presser portion 5 includes a holding portion 51 connected to the lower end portion 32 of the sliding shaft 3 via a screw 53 and a presser plate 52 connected to the holding portion 51. The holding plate 52 is formed of a transparent resin such as an acrylic resin or a polycarbonate resin. In this embodiment, the presser plate 52 has a substantially elliptical shape when viewed from the vertical direction, and a needle drop hole 52a is formed at the center thereof. The needle drop hole 52 a is located immediately below the needle bar 82 and the sewing needle N. The presser plate 52 formed so as to surround the needle drop hole 52a is configured to be able to contact the surface (upper surface) of the sewn product H disposed on the sewing plane. Here, the “sewing plane” means a plane on which the sewn product H sewn by the embroidery sewing machine is disposed. The sewing plane is a plane positioned below the needle bar 82 and perpendicular to the vertical direction. In the present embodiment, specifically, the sewing plane is the upper surface of a needle plate provided on the upper surface of the sewing machine bed.

なお、図1に示していないが、上述したように刺繍ミシンのミシンベッド上に針板が設けられており、針板と押えプレート52との間に縫製物Hが挟まれる。また上述したように圧縮バネ7によって摺動軸3が下方に付勢されているため、押えプレート52も下方に付勢される。従って、針板上(縫製平面上)の縫製物Hは押えプレート52によって下方に押さえつけられる。   Although not shown in FIG. 1, as described above, the needle plate is provided on the sewing machine bed of the embroidery sewing machine, and the sewing product H is sandwiched between the needle plate and the presser plate 52. Further, since the sliding shaft 3 is urged downward by the compression spring 7 as described above, the presser plate 52 is also urged downward. Accordingly, the sewing product H on the needle plate (on the sewing plane) is pressed downward by the presser plate 52.

また、図1に示すように、保持部51を介して摺動軸3に防御部6が接続される。防御部6は押え部5と一体的に形成されていても良いし、別体として形成されていてもよい。防御部6は、鉛直方向から見た場合、針止部材83の一部分の直下の領域に位置する。つまり、防御部6は、縫製平面内の領域のうち、針止部材83の少なくとも一部分、特に、針棒保持部831から左側方に伸びたボス部832及びネジ833の少なくとも一部の直下の領域を覆うように配設される。   Further, as shown in FIG. 1, the protection unit 6 is connected to the sliding shaft 3 via the holding unit 51. The defense unit 6 may be formed integrally with the presser unit 5 or may be formed as a separate body. When viewed from the vertical direction, the protection unit 6 is located in a region immediately below a part of the needle stop member 83. That is, the defense part 6 is an area directly below at least a part of the needle stop member 83, particularly a boss part 832 extending to the left side from the needle bar holding part 831 and at least a part of the screw 833, in the area in the sewing plane. It is arrange | positioned so that it may cover.

防御部6は、保持部51から左側方に突出した突出端部6aを有し、鉛直方向から見て略三角形状を呈する。また、防御部6の前方端は側方向に延びており、この前方端に、上方に向かって立設した前方壁61が形成される。   The defense part 6 has a protruding end part 6a protruding leftward from the holding part 51, and has a substantially triangular shape when viewed from the vertical direction. Moreover, the front end of the protection part 6 is extended in the side direction, and the front wall 61 standing upright is formed in this front end.

係合腕4が、摺動軸3の上方端部31に取付けられる。係合腕4は、心金部41と回転部材42とを有する。心金部41は金属製であり、摺動軸3の上方端部31から後方に伸びた第1部分41a、第1部分41aの後方端にて折り返して前方に伸びた第2部分41b、及び、第2部分41bの前方端から上方に折り曲げられた先端部分41cを有する。回転部材42は円筒形状を成しており、心金部41の第2部分41bの前方部分の外周を覆うように配設される。この回転部材42が本発明の当接部に相当する。   The engaging arm 4 is attached to the upper end 31 of the sliding shaft 3. The engaging arm 4 has a mandrel 41 and a rotating member 42. The mandrel portion 41 is made of metal, and a first portion 41a extending rearward from the upper end portion 31 of the sliding shaft 3, a second portion 41b extending back and extending forward from the rear end of the first portion 41a, and The front end portion 41c is bent upward from the front end of the second portion 41b. The rotating member 42 has a cylindrical shape and is disposed so as to cover the outer periphery of the front portion of the second portion 41 b of the mandrel portion 41. The rotating member 42 corresponds to the contact portion of the present invention.

回転部材42は、第2部分41bの軸周り、すなわち前後方向に平行な軸周りに回転可能に心金部41に取付けられる。回転部材42は弾性体で構成される。本実施形態では、回転部材42は、安価で且つ耐摩耗性の高いエンジニアリングプラスチックにより構成される。例えばポリアセタール樹脂、或いは、ナイロン(登録商標)等のポリアミド樹脂により回転部材42が構成されると良い。   The rotating member 42 is attached to the mandrel 41 so as to be rotatable around the axis of the second portion 41b, that is, around an axis parallel to the front-rear direction. The rotating member 42 is made of an elastic body. In the present embodiment, the rotating member 42 is made of an engineering plastic that is inexpensive and has high wear resistance. For example, the rotating member 42 may be made of polyacetal resin or polyamide resin such as nylon (registered trademark).

上記構成の押え装置1が取付けられた刺繍ミシンを用いて縫製を行う場合、まず、布等の縫製物Hを縫製平面上(針板上)に配設する。その後、刺繍ミシンを駆動させる。すると、針棒82及び縫い針Nが鉛直方向に往復移動する。縫い針Nが下方移動した場合、縫い針Nは針落ち孔52aを経由して縫製物Hを貫通し、さらにその直下の針板に設けられている針孔を経由してミシンベッド内に進入する。ミシンベッド内には釜が設けられており、この釜内にボビンが回転可能に設けられている。ボビンには下糸が巻かれている。縫い針Nの上下運動と釜内のボビンの回転運動との協働作業によって縫い針Nの先端に通された上糸とボビンに巻かれた下糸が結わえられることにより、縫製物Hが縫製され、或いは縫製物Hに刺繍模様が描かれる。   When sewing is performed using the embroidery sewing machine to which the presser device 1 having the above-described structure is attached, first, a sewing product H such as a cloth is disposed on the sewing plane (on the needle plate). Thereafter, the embroidery sewing machine is driven. Then, the needle bar 82 and the sewing needle N reciprocate in the vertical direction. When the sewing needle N moves downward, the sewing needle N penetrates the sewing product H through the needle drop hole 52a, and further enters the sewing machine bed through the needle hole provided in the needle plate directly below the sewing needle N. To do. A hook is provided in the sewing machine bed, and a bobbin is rotatably provided in the hook. A bobbin is wound around the bobbin. The sewing thread H is sewn by combining the upper thread passed through the tip of the sewing needle N and the lower thread wound around the bobbin by the cooperative work of the vertical movement of the sewing needle N and the rotational movement of the bobbin in the hook. Alternatively, an embroidery pattern is drawn on the sewn product H.

針棒82及び縫い針Nが鉛直方向に沿って往復移動した場合、それに伴って針止部材83も、その上限位置と下限位置との間を鉛直方向に沿って往復移動する。また、係合腕4の回転部材42は、図1に示すように、針止部材83の直上位置、具体的には針止部材83のボス部832の直上位置に位置される。さらに、摺動軸3が圧縮バネ7に付勢されて鉛直方向における下限位置にあるときにおける回転部材42の鉛直方向における位置(高さ位置)は、鉛直方向に往復移動するボス部832の上限位置と下限位置との間の所定位置である。換言すれば、回転部材42の高さ位置は、ボス部832の上限位置よりも低く、且つボス部832の下限位置よりも高い。   When the needle bar 82 and the sewing needle N are reciprocated along the vertical direction, the needle stop member 83 is also reciprocated between the upper limit position and the lower limit position along the vertical direction. Further, as shown in FIG. 1, the rotation member 42 of the engagement arm 4 is positioned at a position directly above the needle stop member 83, specifically, a position directly above the boss portion 832 of the needle stop member 83. Further, the position (height position) in the vertical direction of the rotating member 42 when the sliding shaft 3 is biased by the compression spring 7 and is in the lower limit position in the vertical direction is the upper limit of the boss portion 832 that reciprocates in the vertical direction. It is a predetermined position between the position and the lower limit position. In other words, the height position of the rotating member 42 is lower than the upper limit position of the boss portion 832 and higher than the lower limit position of the boss portion 832.

従って、針止部材83が図1に示す位置から下方に移動した場合、ボス部832が回転部材42から離間する。このため摺動軸3は、圧縮バネ7からの弾性力を受けて下方に付勢される結果、下限位置に位置する。摺動軸3が下限位置にあるときに、摺動軸3の下方端部32に接続された押え部5の押えプレート52が縫製平面(針板)上の縫製物Hの表面に接触するとともに、圧縮バネ7からの弾性力(伸長力)によって縫製物Hを押える。このとき縫い針Nが下方移動して縫製物Hを貫通することにより、縫製平面上に配設された縫製物Hが押え装置1により押えられた状態で縫製が実行される。   Therefore, when the needle stop member 83 moves downward from the position shown in FIG. 1, the boss portion 832 is separated from the rotating member 42. For this reason, the sliding shaft 3 is positioned at the lower limit position as a result of being urged downward by receiving the elastic force from the compression spring 7. When the slide shaft 3 is at the lower limit position, the presser plate 52 of the presser portion 5 connected to the lower end portion 32 of the slide shaft 3 contacts the surface of the sewing product H on the sewing plane (needle plate). The sewing product H is pressed by the elastic force (extension force) from the compression spring 7. At this time, when the sewing needle N moves downward and penetrates the sewing product H, the sewing is performed in a state where the sewing product H arranged on the sewing plane is pressed by the presser device 1.

一方、針止部材83が図1に示す位置から上方に移動した場合、ボス部832が下方から回転部材42に当接する。このため係合腕4及び係合腕4に連結された摺動軸3が持ち上げられて、針止部材83とともに上方移動する。このようにして、摺動軸3がその上限位置と下限位置との間を移動する。摺動軸3の下限位置からの上方移動により、押えプレート52が縫製物Hの表面から離れる。このため縫製作業者が縫製物Hを自由に動かして様々な刺繍模様を縫製物Hに描くことができる。   On the other hand, when the needle stop member 83 moves upward from the position shown in FIG. 1, the boss portion 832 contacts the rotating member 42 from below. Therefore, the engagement arm 4 and the sliding shaft 3 connected to the engagement arm 4 are lifted and moved upward together with the needle stop member 83. In this way, the sliding shaft 3 moves between its upper limit position and lower limit position. The presser plate 52 moves away from the surface of the sewing product H by the upward movement from the lower limit position of the sliding shaft 3. Therefore, the sewing manufacturer can freely move the sewing product H and draw various embroidery patterns on the sewing product H.

図2は、縫い針Nが下方移動して下死点位置に到達した場合における、針元付近を示す図である。図2においては縫製物が省略されている。図2に示すように、縫い針Nが下死点位置にあるとき、針止部材83が最も下方に位置する。このとき針止部材83と針板85(縫製平面)との間の鉛直方向における隙間は最も小さい。   FIG. 2 is a view showing the vicinity of the needle base when the sewing needle N moves downward and reaches the bottom dead center position. In FIG. 2, the sewn product is omitted. As shown in FIG. 2, when the sewing needle N is at the bottom dead center position, the needle stop member 83 is positioned at the lowest position. At this time, the gap in the vertical direction between the needle stop member 83 and the needle plate 85 (sewing plane) is the smallest.

ところで、縫製作業中、縫製作業者は、縫い針Nの針元(針落ち孔52a付近)を注視するが、針元以外の部分には注意を払わない場合が多い。従って、縫製物の位置或いは姿勢を変化させようとして縫製作業者の指先が針止部材83の直下位置、特に針止部材83のボス部832及びネジ833の直下位置に近づくことを、縫製作業者自身が認識しないことがある。このような状況では、針止部材83が下方移動したときに縫製作業者の指先が針止部材83(ボス部832、ネジ833)と針板85との間に挟まれる虞がある。   By the way, during the sewing operation, the sewing manufacturer pays attention to the needle base (near the needle drop hole 52a) of the sewing needle N, but often does not pay attention to the portion other than the needle base. Therefore, it is necessary for the sewing manufacturer to change the position or posture of the sewing product so that the fingertip of the sewing manufacturer approaches the position immediately below the needle stop member 83, particularly the position directly below the boss portion 832 and the screw 833 of the needle stop member 83. You may not recognize yourself. In such a situation, when the needle stop member 83 moves downward, the fingertip of the sewing manufacturer may be pinched between the needle stop member 83 (the boss portion 832 and the screw 833) and the needle plate 85.

この点に関し、本実施形態によれば、摺動軸3の下方端部32に防御部6が接続されており、この防御部6が、縫製平面内の領域のうち針止部材83のボス部832及びネジ833の少なくとも一部の直下を含む領域を覆うように配設されている。従って、縫製作業者の指先が防御部6にガードされることによって、縫製作業者の指先がボス部832及びネジ833の直下領域、例えば図2の斜線で示す領域Rに入り込むことが防止される。その結果、針止部材83が下方移動したときに縫製作業者の指先が針止部材83と針板85(縫製平面)との間に挟まれることが防止される。   In this regard, according to the present embodiment, the protective portion 6 is connected to the lower end portion 32 of the sliding shaft 3, and the protective portion 6 is a boss portion of the needle stop member 83 in the region within the sewing plane. 832 and the screw 833 are disposed so as to cover an area including at least a part of the screw 833. Therefore, the fingertip of the sewing manufacturer is guarded by the protection unit 6, thereby preventing the fingertip of the sewing manufacturer from entering the region immediately below the boss portion 832 and the screw 833, for example, the region R indicated by the oblique lines in FIG. 2. . As a result, the fingertip of the sewing manufacturer is prevented from being pinched between the needle stop member 83 and the needle plate 85 (sewing plane) when the needle stop member 83 moves downward.

また、縫製作業者の指先は、前方から後方に向かって進んで針元付近に近づくことが多い。この点に関し、本実施形態によれば、防御部6の前方端に前方壁61が形成されている。従って、縫製作業者の指先が前方壁61に干渉することにより、縫製作業者の指先がそれ以上、前方側から針止部材83の直下の位置に近づくことが防止される。このため針止部材83が下方移動したときに縫製作業者の指先が針止部材83と針板85との間に挟まれることが効果的に防止される。   In addition, the fingertips of sewing manufacturers often go from the front toward the rear and approach the vicinity of the needle base. In this regard, according to the present embodiment, the front wall 61 is formed at the front end of the defense unit 6. Therefore, when the fingertip of the sewing manufacturer interferes with the front wall 61, the fingertip of the sewing manufacturer is further prevented from approaching the position directly below the needle stop member 83 from the front side. For this reason, when the needle stop member 83 is moved downward, the fingertip of the sewing manufacturer is effectively prevented from being pinched between the needle stop member 83 and the needle plate 85.

図3は、刺繍枠を用いて縫製作業を実行する場合における針元付近を示す図である。刺繍枠Yを用いる場合、押え部5が縫い針Nとともに上方移動したときに刺繍枠Yを動かすことにより、刺繍枠Yに取付けられた縫製物に様々な刺繍模様を描くことができる。この場合において、刺繍枠Yが針止部材83の直下位置、特に針止部材83のボス部832或いはネジ833の直下位置に移動してきた場合、刺繍枠Yにボス部832或いはネジ833が衝突して刺繍枠Yが破損する虞がある。   FIG. 3 is a view showing the vicinity of the needle base when the sewing work is executed using the embroidery frame. When the embroidery frame Y is used, various embroidery patterns can be drawn on the sewn product attached to the embroidery frame Y by moving the embroidery frame Y when the presser 5 moves upward together with the sewing needle N. In this case, when the embroidery frame Y has moved to a position directly below the needle stop member 83, particularly a position directly below the boss portion 832 or screw 833 of the needle stop member 83, the boss portion 832 or screw 833 collides with the embroidery frame Y. The embroidery frame Y may be damaged.

この点に関し、本実施形態によれば、摺動軸3の下方端部32に防御部6が接続されており、この防御部6は、摺動軸3から左側方(側方)に突出した端部(突出端部6a)を有している。従って、左側方側から針止部材83に近づく刺繍枠Yが、防御部6の突出端部6aに当接することにより、刺繍枠Yがそれ以上、針止部材83に近づくことが防止される。このため刺繍枠Yがボス部832或いはネジ833の直下位置に入り込むことができず、よって、刺繍枠Yが針止部材83に衝突して刺繍枠Yが破損することが防止される。   In this regard, according to the present embodiment, the defense portion 6 is connected to the lower end portion 32 of the slide shaft 3, and the defense portion 6 protrudes leftward (sideward) from the slide shaft 3. It has an end (projecting end 6a). Therefore, the embroidery frame Y approaching the needle stop member 83 from the left side abuts against the protruding end portion 6a of the protection unit 6 to prevent the embroidery frame Y from approaching the needle stop member 83 any more. For this reason, the embroidery frame Y cannot enter the position directly below the boss portion 832 or the screw 833, and thus the embroidery frame Y is prevented from colliding with the needle stop member 83 and being damaged.

また、上述したように、本実施形態においては針棒82が鉛直方向のみならず側方向にも移動可能に構成される。針棒82が側方向に移動した場合、針止部材83も側方向に移動する。針棒82及び針止部材83の側方移動は、針棒82が上死点位置に上方移動したときに行われる。針棒82が上死点位置にあるとき(針止部材83が上限位置にあるとき)は、針止部材83のボス部832と係合腕4の回転部材42が当接している。つまり、針止部材83のボス部832が係合腕4の回転部材42に当接しているときに針棒82及び針止部材83の側方向への移動が実行される。   Further, as described above, in the present embodiment, the needle bar 82 is configured to be movable not only in the vertical direction but also in the lateral direction. When the needle bar 82 moves in the lateral direction, the needle stop member 83 also moves in the lateral direction. The lateral movement of the needle bar 82 and the needle stop member 83 is performed when the needle bar 82 moves upward to the top dead center position. When the needle bar 82 is at the top dead center position (when the needle stop member 83 is at the upper limit position), the boss portion 832 of the needle stop member 83 and the rotating member 42 of the engagement arm 4 are in contact with each other. That is, when the boss portion 832 of the needle stop member 83 is in contact with the rotating member 42 of the engagement arm 4, the needle bar 82 and the needle stop member 83 are moved in the lateral direction.

従来においては、ボス部832と係合腕4が当接した状態で針止部材83が側方向に移動した場合、ボス部832の外周面が係合腕4に擦られることによって摩耗する。このため針止部材83の耐久性が悪化するとともに、ボス部832の摩耗により発生した摩耗粉が縫製物に付着して縫製物を汚す虞がある。   Conventionally, when the needle stop member 83 moves in the lateral direction with the boss portion 832 and the engagement arm 4 in contact with each other, the outer peripheral surface of the boss portion 832 is worn by being rubbed against the engagement arm 4. For this reason, the durability of the needle stop member 83 is deteriorated, and there is a possibility that the abrasion powder generated by the abrasion of the boss portion 832 adheres to the sewing product and contaminates the sewing product.

この点に関し、本実施形態では、係合腕4が回転部材42を備え、この回転部材42が針止部材83のボス部832に当接するように配設される。図4は、ボス部832と回転部材42との当接状態を示す図である。回転部材42は前後方向に平行な軸周りに回転可能であるので、針止部材83(ボス部832)が側方向に移動するときに、回転部材42はボス部832に接触しながら回転する。回転部材42が回転することによって、ボス部832が回転部材42に擦られることなく側方移動することができる。つまり、針止部材83の側方移動時に回転部材42がボス部832に転がり接触する。転がり摩擦力は小さい。このため摩擦力が軽減されて、摩擦によるボス部832の摩耗量を軽減することができる。   In this regard, in the present embodiment, the engaging arm 4 includes the rotating member 42, and the rotating member 42 is disposed so as to contact the boss portion 832 of the needle stop member 83. FIG. 4 is a diagram showing a contact state between the boss portion 832 and the rotating member 42. Since the rotation member 42 can rotate around an axis parallel to the front-rear direction, the rotation member 42 rotates while contacting the boss portion 832 when the needle stop member 83 (boss portion 832) moves in the lateral direction. By rotating the rotating member 42, the boss portion 832 can move sideways without being rubbed against the rotating member 42. That is, the rotating member 42 rolls into contact with the boss portion 832 when the needle stop member 83 moves sideways. Rolling frictional force is small. For this reason, the frictional force is reduced, and the wear amount of the boss portion 832 due to the friction can be reduced.

さらに、回転部材42が弾性体であるので、回転部材42とボス部832との当接時に回転部材42が弾性変形することによりボス部832に回転部材42が面当たりする。このため接触面積が拡大し、回転部材42とボス部832との当接時にボス部832に作用する単位面積当たりの衝撃力が緩和される。その結果、ボス部832の摩耗量をより一層軽減することができる。また、回転部材42は耐摩耗性の高いエンジニアリングプラスチック(例えばポリアセタール、ポリアミド)で形成されているので、回転部材42自身の摩耗も防止することができる。   Further, since the rotating member 42 is an elastic body, the rotating member 42 comes into contact with the boss portion 832 by elastic deformation of the rotating member 42 when the rotating member 42 and the boss portion 832 come into contact with each other. For this reason, the contact area is enlarged, and the impact force per unit area that acts on the boss portion 832 when the rotating member 42 and the boss portion 832 come into contact with each other is reduced. As a result, the wear amount of the boss portion 832 can be further reduced. Further, since the rotating member 42 is formed of an engineering plastic (for example, polyacetal or polyamide) having high wear resistance, it is possible to prevent the rotating member 42 itself from being worn.

(変形例)
図5は、本実施形態の変形例に係る押え装置を示す平面図である。図6は、変形例に係る押え装置を示す斜視図である。図5及び図6に示すように、変形例に係る押え装置1’は、防御部の形状が上記実施形態に係る防御部と異なる。それ以外の構成は上記実施形態に係る押え装置1と同一であるので、同一部分を同一の符号で示してその具体的説明は省略する。
(Modification)
FIG. 5 is a plan view showing a presser device according to a modification of the present embodiment. FIG. 6 is a perspective view showing a presser device according to a modification. As shown in FIGS. 5 and 6, the presser device 1 ′ according to the modification is different from the defense unit according to the embodiment in the shape of the defense unit. Since the other configuration is the same as that of the presser device 1 according to the above-described embodiment, the same parts are denoted by the same reference numerals, and the detailed description thereof is omitted.

変形例に係る押え装置1’の防御部6’は、保持部51から左側方に伸びるように形成される。防御部6’の前方の端部は側方向に伸び、左側方の端部が前後方向に伸びる。防御部6’の前方端部には、上記実施形態と同様に上方に向かって立設した前方壁61が形成される。また、防御部6’の左側方端部には、上方に向かって立設した左側方壁62(側方壁)が形成される。   The defense portion 6 ′ of the presser device 1 ′ according to the modification is formed to extend from the holding portion 51 to the left side. The front end of the defense 6 'extends in the lateral direction, and the left end extends in the front-rear direction. A front wall 61 erected upward is formed at the front end portion of the defense portion 6 ′ as in the above embodiment. Further, a left side wall 62 (side wall) standing upward is formed at the left side end of the defense part 6 ′.

縫製作業中に、縫製作業者の指先が前方から針止部材83の直下位置に近づいてきた場合、縫製作業者の指先が前方壁61に干渉することにより、縫製作業者の指先がそれ以上、針止部材83の直下の位置に近づくことが防止される。また、縫製作業中に、縫製作業者の指先が左側方から針止部材83の直下位置に近づいてきた場合、縫製作業者の指先が左側方壁62に干渉することにより、縫製作業者の指先がそれ以上、針止部材83の直下の位置に近づくことが防止される。このため針止部材83が下方移動したときに、縫製作業者の指先が針止部材83と針板85との間に挟まれることが効果的に防止される。   During the sewing operation, when the fingertip of the sewing manufacturer approaches the position directly below the needle stop member 83 from the front, the fingertip of the sewing manufacturer interferes with the front wall 61, so that the fingertip of the sewing manufacturer is further increased. Access to a position directly below the needle stop member 83 is prevented. In addition, if the fingertip of the sewing manufacturer approaches the position directly below the needle stop member 83 from the left side during the sewing operation, the fingertip of the sewing manufacturer interferes with the left side wall 62, thereby causing the fingertip of the sewing manufacturer. However, it is prevented from approaching the position immediately below the needle stop member 83. For this reason, when the needle stop member 83 moves downward, the fingertip of the sewing manufacturer is effectively prevented from being pinched between the needle stop member 83 and the needle plate 85.

以上のように、本実施形態に係る押え装置1及び変形例に係る押え装置1’は、押え棒81に固定される取付部2と、鉛直方向に沿って上限位置と下限位置との間を移動可能に取付部2に支持される摺動軸3と、摺動軸3に連結されるとともに、針止部材83(ボス部832)の直上位置であって摺動軸3がその下限位置にあるときに針止部材83(ボス部832)の上限位置と下限位置との間の所定位置に配置される回転部材42を備える係合腕4と、摺動軸3の下方端部32に接続されるとともに、摺動軸3が下限位置にあるときに縫製平面上に配設された縫製物Hの表面に接触する押えプレート52を有する押え部5と、摺動軸3の下方端部32に接続されるとともに、縫製平面内の領域のうち針止部材83(ボス部832、ネジ833)の直下を含む領域を覆うように配設された防御部6、6’と、を備える。   As described above, the presser device 1 according to the present embodiment and the presser device 1 ′ according to the modified example are provided between the attachment portion 2 fixed to the presser bar 81 and the upper limit position and the lower limit position along the vertical direction. The sliding shaft 3 is supported by the mounting portion 2 so as to be movable, and is coupled to the sliding shaft 3, and is located immediately above the needle stop member 83 (boss portion 832), and the sliding shaft 3 is at its lower limit position. Connected to the engaging arm 4 including the rotating member 42 disposed at a predetermined position between the upper limit position and the lower limit position of the needle stop member 83 (boss portion 832) and the lower end portion 32 of the sliding shaft 3 at a certain time. In addition, when the sliding shaft 3 is at the lower limit position, the presser portion 5 having a presser plate 52 that contacts the surface of the sewing product H disposed on the sewing plane, and the lower end portion 32 of the sliding shaft 3. And the needle stop member 83 (the boss portion 832, the screw 83) in the region within the sewing plane. Comprising a, a defense unit 6, 6 'which is disposed so as to cover the region including the immediately below).

本実施形態及び変形例によれば、摺動軸3の下方端部32に接続される防御部6、6’によって、異物が針止部材83の直下に入り込むことが防止される。このため針止部材83が下方に移動したときに針止部材83と針板85(縫製平面)との間に異物が挟まれることが防止される。   According to the present embodiment and the modified example, the protective portions 6 and 6 ′ connected to the lower end portion 32 of the sliding shaft 3 prevent foreign matter from entering directly below the needle stop member 83. This prevents foreign matter from being caught between the needle stop member 83 and the needle plate 85 (sewing plane) when the needle stop member 83 moves downward.

また、防御部6、6’の前方端に、上方向に向かって立設した前方壁61が形成されている。このため前方壁61に縫製作業者の指先が干渉することにより、縫製作業者の指先が前方側からそれ以上、針止部材83の直下の位置に近づくことが防止される。このため針止部材83が下方に移動したときに針止部材83と針板85(縫製平面)との間に例えば縫製作業者の指先が挟まれることが防止される。   Further, a front wall 61 erected upward is formed at the front end of the defense parts 6 and 6 ′. For this reason, when the fingertip of the sewing manufacturer interferes with the front wall 61, the fingertip of the sewing manufacturer is further prevented from approaching the position directly below the needle stop member 83 from the front side. For this reason, when the needle stop member 83 moves downward, for example, a fingertip of a sewing manufacturer is prevented from being pinched between the needle stop member 83 and the needle plate 85 (sewing plane).

また、防御部6が、摺動軸3の下方端部32から左側方に突出した突出端部6aを有する。従って、刺繍枠Yを用いて縫製作業を実行する場合において、刺繍枠Yを左側方から右側方に移動させた場合に、刺繍枠Yが突出端部6aに干渉することにより刺繍枠Yが左側方側からそれ以上、針止部材83の直下の位置に近づくことが防止される。このため針止部材83が下方に移動したときに針止部材83と針板85(縫製平面)との間に例えば刺繍枠Yが挟まれて刺繍枠Yが破損することが防止される。   Further, the defense part 6 has a protruding end 6 a that protrudes leftward from the lower end 32 of the sliding shaft 3. Therefore, when performing the sewing work using the embroidery frame Y, when the embroidery frame Y is moved from the left side to the right side, the embroidery frame Y interferes with the protruding end 6a, so that the embroidery frame Y is moved to the left side. Further approach from the side to the position directly below the needle stop member 83 is prevented. For this reason, when the needle stop member 83 moves downward, for example, the embroidery frame Y is prevented from being damaged due to the embroidery frame Y being sandwiched between the needle stop member 83 and the needle plate 85 (sewing plane).

また、防御部6’の左側方端に、上方に向かって立設した左側方壁62が形成されている。このため左側方壁62に例えば縫製作業者の指先が干渉することにより、縫製作業者の指先が左側方側からそれ以上、針止部材83の直下の位置に近づくことが防止される。このため針止部材83が下方に移動したときに針止部材83と針板85(縫製平面)との間に例えば縫製作業者の指先が挟まれることが防止される。   Further, a left side wall 62 is formed on the left side end of the defense portion 6 ′ so as to stand upward. For this reason, for example, when the fingertip of the sewing manufacturer interferes with the left side wall 62, the fingertip of the sewing manufacturer is prevented from approaching the position directly below the needle stop member 83 from the left side. For this reason, when the needle stop member 83 moves downward, for example, a fingertip of a sewing manufacturer is prevented from being pinched between the needle stop member 83 and the needle plate 85 (sewing plane).

また、係合腕4は回転部材42を有し、回転部材42は弾性体により形成されるとともに前後方向に平行な軸周りに回転可能に構成される。従って、針止部材83のボス部832が回転部材42に接触したまま側方に移動した場合に、回転部材42が回転することにより、回転部材42とボス部832の接触に起因するボス部832の摩耗を軽減することができる。さらに、回転部材42は弾性体で形成されているので、回転部材42とボス部832との当接時に回転部材42が弾性変形することにより回転部材42がボス部832に面当たりする。このため接触面積が拡大し、回転部材42とボス部832との当接時にボス部832に作用する単位面積当たりの衝撃力が緩和される。その結果、ボス部832の摩耗をより一層軽減することができる。   The engaging arm 4 has a rotating member 42. The rotating member 42 is formed of an elastic body and is configured to be rotatable around an axis parallel to the front-rear direction. Therefore, when the boss portion 832 of the needle stop member 83 moves to the side while being in contact with the rotating member 42, the rotating member 42 rotates to cause the boss portion 832 resulting from the contact between the rotating member 42 and the boss portion 832. Wear can be reduced. Further, since the rotating member 42 is formed of an elastic body, the rotating member 42 comes into contact with the boss portion 832 due to elastic deformation of the rotating member 42 when the rotating member 42 and the boss portion 832 come into contact with each other. For this reason, the contact area is enlarged, and the impact force per unit area that acts on the boss portion 832 when the rotating member 42 and the boss portion 832 come into contact with each other is reduced. As a result, wear of the boss portion 832 can be further reduced.

以上、本発明の実施形態及びその変形例について説明したが、本発明は、上記実施形態及び変形例に限定されるべきものではない。例えば、上記実施形態においては、押え部5と防御部6が一体的に形成され、防御部6が押え部5の保持部51を介して摺動軸3に接続されている例について説明したが、防御部6は押え部5と別々に形成され、防御部6が摺動軸3に直接接続されていてもよい。このように、本発明は、その趣旨を逸脱しない限りにおいて、変形可能である。   As mentioned above, although embodiment of this invention and its modification were demonstrated, this invention should not be limited to the said embodiment and modification. For example, in the above embodiment, the example in which the presser portion 5 and the defense portion 6 are integrally formed and the defense portion 6 is connected to the slide shaft 3 via the holding portion 51 of the presser portion 5 has been described. The protection unit 6 may be formed separately from the presser unit 5, and the protection unit 6 may be directly connected to the sliding shaft 3. Thus, the present invention can be modified without departing from the gist thereof.

1…押え装置、2…取付部、21…ブラケット部、22…支持部、3…摺動軸、31…上方端部、32…下方端部、33…中央部分、4…係合腕、41…心金部、42…回転部材(当接部)、5…押え部、51…保持部、52…押えプレート、52a…針落ち孔、6…防御部、6a…突出端部、61…前方壁、62…左側方壁、7…圧縮バネ(付勢部材)、81…押え棒、82…針棒、83…針止部材、831…針棒保持部、832…ボス部、833…ネジ、85…針板、H…縫製物、N…針、Y…刺繍枠 DESCRIPTION OF SYMBOLS 1 ... Holding device, 2 ... Mounting part, 21 ... Bracket part, 22 ... Support part, 3 ... Sliding shaft, 31 ... Upper end part, 32 ... Lower end part, 33 ... Center part, 4 ... Engagement arm, 41 DESCRIPTION OF SYMBOLS ... Metal part, 42 ... Rotating member (contact part), 5 ... Holding part, 51 ... Holding part, 52 ... Holding plate, 52a ... Needle drop hole, 6 ... Defense part, 6a ... Projection end part, 61 ... Forward Wall 62, left side wall 7, compression spring (biasing member), 81 presser bar, 82 needle bar, 83 needle stop member, 831 needle bar holding portion, 832 boss portion, 833 screw, 85 ... Needle plate, H ... Sewing product, N ... Needle, Y ... Embroidery frame

Claims (5)

押え棒と、鉛直方向に沿って往復移動可能な針棒と、前記針棒と共に鉛直方向に沿って上限位置と下限位置との間を往復移動可能であり前記針棒に縫い針を取付ける針止部材と、を備える刺繍ミシンに適用され、鉛直方向に垂直な縫製平面上に配設された縫製物を押える押え装置であって、
前記押え棒に固定される取付部と、
鉛直方向に沿って上限位置と下限位置との間を移動可能に前記取付部に支持される摺動軸と、
前記摺動軸に連結されるとともに、前記針止部材の直上位置であって前記摺動軸が前記摺動軸の下限位置にあるときに前記針止部材の上限位置と下限位置との間の所定位置に配置される当接部を備える係合腕と、
前記摺動軸の下方端部に接続されるとともに、前記摺動軸が下限位置にあるときに前記縫製平面上に配設された縫製物の表面に接触する押え部と、
前記摺動軸の下方端部に接続されるとともに、前記縫製平面内の領域のうち前記針止部材の直下を含む領域を覆うように配設された防御部と、を備える、押え装置。
A presser bar, a needle bar that can reciprocate along the vertical direction, and a needle stopper that can reciprocate between the upper limit position and the lower limit position along the vertical direction together with the needle bar and attaches a sewing needle to the needle bar. A presser device that is applied to an embroidery sewing machine that includes a member, and that holds a sewing product disposed on a sewing plane perpendicular to the vertical direction,
A mounting portion fixed to the presser bar;
A sliding shaft supported by the mounting portion so as to be movable between an upper limit position and a lower limit position along the vertical direction;
It is connected to the sliding shaft, and is a position immediately above the needle stop member and between the upper limit position and the lower limit position of the needle stop member when the slide shaft is at the lower limit position of the slide shaft. An engagement arm having a contact portion arranged at a predetermined position;
A presser portion that is connected to the lower end of the sliding shaft and contacts the surface of the sewing product disposed on the sewing plane when the sliding shaft is at the lower limit position;
A presser device comprising: a protection portion connected to a lower end portion of the sliding shaft and disposed so as to cover a region including a region directly below the needle stop member in a region in the sewing plane.
請求項1に記載の押え装置において、前記防御部の前方端に、上方に向かって立設した前方壁が形成されている、押え装置。   The presser device according to claim 1, wherein a front wall erected upward is formed at a front end of the defense part. 請求項1又は2に記載の押え装置において、前記防御部が、前記摺動軸の下方端部から側方に突出した突出端部を有する、押え装置。   3. The presser device according to claim 1, wherein the defense portion has a protruding end portion that protrudes laterally from a lower end portion of the sliding shaft. 請求項1乃至3のいずれか1項に記載の押え装置において、前記防御部の側方端に、上方に向かって立設した側方壁が形成されている、押え装置。   The presser device according to any one of claims 1 to 3, wherein a side wall erected upward is formed at a side end of the defense portion. 請求項1乃至4のいずれか1項に記載の押え装置において、前記当接部は、弾性体により形成されるとともに、前後方向に平行な軸周りに回転可能な回転部材により構成される、押え装置。   5. The presser device according to claim 1, wherein the contact portion is formed of an elastic body and is configured by a rotating member that is rotatable around an axis parallel to the front-rear direction. apparatus.
JP2014020248A 2014-02-05 2014-02-05 Embroidery sewing machine presser device Expired - Fee Related JP6331434B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485078A (en) * 2019-07-10 2019-11-22 浙江信胜科技股份有限公司 A kind of device and embroidery machine with auxiliary presser foot and presser feet safeguard function

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JPS5195460U (en) * 1975-01-28 1976-07-31
JP2007130056A (en) * 2005-11-08 2007-05-31 Janome Sewing Mach Co Ltd Free presser foot of sewing machine
JP2012228431A (en) * 2011-04-27 2012-11-22 Aisin Seiki Co Ltd Sewing machine embroidery presser and sewing machine

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JPS5195460U (en) * 1975-01-28 1976-07-31
JP2007130056A (en) * 2005-11-08 2007-05-31 Janome Sewing Mach Co Ltd Free presser foot of sewing machine
JP2012228431A (en) * 2011-04-27 2012-11-22 Aisin Seiki Co Ltd Sewing machine embroidery presser and sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485078A (en) * 2019-07-10 2019-11-22 浙江信胜科技股份有限公司 A kind of device and embroidery machine with auxiliary presser foot and presser feet safeguard function
CN110485078B (en) * 2019-07-10 2024-03-12 浙江信胜科技股份有限公司 Device with auxiliary presser foot and presser foot protection function and embroidery machine

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