JP5692973B2 - sewing machine - Google Patents

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JP5692973B2
JP5692973B2 JP2009157810A JP2009157810A JP5692973B2 JP 5692973 B2 JP5692973 B2 JP 5692973B2 JP 2009157810 A JP2009157810 A JP 2009157810A JP 2009157810 A JP2009157810 A JP 2009157810A JP 5692973 B2 JP5692973 B2 JP 5692973B2
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sewing
drive mechanism
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sewing machine
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欽也 愛敬
欽也 愛敬
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株式会社バルダン
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Description

本発明は、縫製枠を前後方向に駆動する前後駆動機構を備えたミシンに関する。   The present invention relates to a sewing machine including a front-rear drive mechanism that drives a sewing frame in the front-rear direction.

単頭ミシンは、一般的に、図4に示す従来例のミシン90のように、縫製枠92の下方に、前後方向に延びる一対の前後駆動機構95,95を、左右方向に間隔をおいて備え、各前後駆動機構95,95のすぐ隣に、前後方向に延びるガイド軸96,96を備えている。   A single-head sewing machine generally has a pair of front and rear drive mechanisms 95, 95 extending in the front-rear direction below the sewing frame 92 and spaced in the left-right direction, like a conventional sewing machine 90 shown in FIG. The guide shafts 96, 96 extending in the front-rear direction are provided immediately next to the front-rear drive mechanisms 95, 95.

特開2006−320578号公報JP 2006-320578 A

ところが、このように縫製枠92の下方に、前後駆動機構95,95とガイド軸96,96とが設けられている場合、カバン等のように、左右方向に大きく、かつ、展張時に下方に大きく垂れ下がる被縫製物は、その垂れ下がった部分が、前後駆動機構95,95又はガイド軸96,96に接触するため縫製することができない。また、そのような接触を避けるために、一対の前後駆動機構95,95間のピッチQを大きくした場合には、特許文献1の場合ように、ミシン90全体が左右方向に大きくなり過ぎてしまう。   However, when the front and rear drive mechanisms 95 and 95 and the guide shafts 96 and 96 are provided below the sewing frame 92 as described above, they are large in the left-right direction and large in the downward direction during expansion, such as a bag. The item to be sewn that hangs down cannot be sewn because the hanged part contacts the front and rear drive mechanisms 95, 95 or the guide shafts 96, 96. Further, in order to avoid such contact, when the pitch Q between the pair of front and rear drive mechanisms 95, 95 is increased, the entire sewing machine 90 becomes too large in the left-right direction as in Patent Document 1. .

そこで、本出願人は、図5に示すように、一対の前後駆動機構95,95と一対のガイド軸96,96とを、縫製枠92よりも上方に設けた従来例2のミシン99を開発した。このミシン99によれば、一対の前後駆動機構95,95間のピッチQを大きくすることなく、下方に垂れ下がる被縫製物Wと、前後駆動機構95,95又はガイド軸96,96との接触を回避することができたが、該上方に設けた前後駆動機構95,95及びガイド軸96,96によって、縫製枠92上に死角が増えて目視可能範囲が減り、被縫製物Wの出来上がり等の確認や、縫製枠20のセット等をし難くなってしまった。より詳しくは、ガイド軸96,96の方は小さいため、さほど大きく死角を増やさないが、特に前後駆動機構95,95の方が大きいため、より大きく死角を増やしてしまう。   Therefore, as shown in FIG. 5, the present applicant has developed the sewing machine 99 of the conventional example 2 in which the pair of front and rear drive mechanisms 95 and 95 and the pair of guide shafts 96 and 96 are provided above the sewing frame 92. did. According to this sewing machine 99, without making the pitch Q between the pair of front and rear drive mechanisms 95 and 95 large, contact is made between the workpiece W hanging downward and the front and rear drive mechanisms 95 and 95 or the guide shafts 96 and 96. Although it was possible to avoid this, the front / rear drive mechanisms 95 and 95 and the guide shafts 96 and 96 provided on the upper side increase the blind spot on the sewing frame 92 and reduce the visible range. It has become difficult to check and set the sewing frame 20. More specifically, since the guide shafts 96 and 96 are smaller, the blind spot is not increased so much. However, since the front and rear drive mechanisms 95 and 95 are particularly large, the blind spot is increased more greatly.

そこで、ミシンの寸法を左右方向に大きくすることも、縫製枠上に死角を大きく増やすこともなく、被縫製物が展張時に下方に垂れ下がる場合にも、その被縫製物が、前後駆動機構やガイド軸に接触しないようにすることを目的とする。   Therefore, even if the size of the sewing machine is increased in the left-right direction, the blind spot is not greatly increased on the sewing frame, and the sewing product hangs down during stretching, the sewing product can be moved back and forth. The purpose is not to touch the shaft.

上記目的を達成するため、本発明のミシンは、被縫製物を展張する縫製枠の上方であり、かつ、前後方向に水平に延びるミシンアームの下方又は内部に、前記縫製枠を前後方向に駆動するための前後方向に延びる前後駆動機構を、該前後駆動機構の前記ミシンアームの後端よりも前方に位置する部分が、該ミシンアームの左右幅の平面投影範囲内に収まるように設け、前記縫製枠の上方であり、かつ、前記前後駆動機構の左右両側に、前記縫製枠を前後方向にガイドするための一対のガイド軸の1本ずつを、前記一対のガイド軸の中心間ピッチが100〜300mmになるように設け、前記一対のガイド軸の下方に、左右方向の長さが前記中心間ピッチよりも長い、前記縫製枠を左右方向に駆動するための左右駆動機構を、その上方に設けた一対の係合部材を介して該一対のガイド軸に相対変位可能に係合するように設け、いずれのガイド軸も、前記縫製枠を左右方向に駆動する駆動力を伝達しない。 In order to achieve the above object, the sewing machine according to the present invention drives the sewing frame in the front-rear direction above or in the sewing arm extending horizontally in the front-rear direction above the sewing frame for spreading the workpiece. A front-rear drive mechanism extending in the front-rear direction is provided so that a portion of the front-rear drive mechanism located in front of the rear end of the sewing machine arm is within a plane projection range of the left-right width of the sewing machine arm, One of the pair of guide shafts for guiding the sewing frame in the front-rear direction is provided above the sewing frame and on both the left and right sides of the front-rear drive mechanism, and the center-to-center pitch of the pair of guide shafts is 100. provided so as to to 300 mm, below the pair of guide shafts, the horizontal length is longer than the center-to-center pitch, the left and right drive mechanism for driving the embroidery frame in the lateral direction, on the upper Provided Through the engagement member of the pair is provided so as to face displaceably engaged with the pair of guide shafts, both of the guide shaft does not transmit the driving force for driving the embroidery frame in the lateral direction.

ここで、前記前後駆動機構は、特に限定されないが、前後方向に間隔をおいて並設された前後一対のプーリと、該前後一対のプーリに架けられたベルトとを含み構成され、前記前後駆動機構の後側のプーリと、該後側のプーリを回転駆動するモータとが、前記ミシンアームの後端を支持するアーム支持部の内部に設けられていることが好ましい。スペースをより有効的に使うことができるからである。
また、前記左右駆動機構は、特に限定されないが、左右方向に前記一対のガイド軸の中心間ピッチよりも広い中心間ピッチで並設された左右一対のプーリと、該左右一対のプーリに架けられたベルトとを含み構成され、前記左右駆動機構の左右のいずれのプーリも、前記ガイド軸に外嵌されていないことが好ましい。
Here, the front-rear driving mechanism is not particularly limited, is constituted comprising a pair of pulleys before and after being arranged at an interval in the longitudinal direction, and a belt that is hung on the front and rear pair of pulleys, said front and rear drive It is preferable that a rear pulley of the mechanism and a motor that rotationally drives the rear pulley are provided inside an arm support portion that supports the rear end of the sewing machine arm. This is because the space can be used more effectively.
Further, the left and right drive mechanism is not particularly limited, but is mounted on a pair of left and right pulleys arranged in parallel in the left and right direction at a center-to-center pitch wider than the center-to-center pitch of the pair of guide shafts. The left and right pulleys of the left and right drive mechanism are preferably not externally fitted to the guide shaft.

また、前記一対のガイド軸の中心間ピッチは、前記100〜300mmであること以上は特に限定されないが、150〜250mmであることがより好ましい。該中心間ピッチは、短い程、ガイド軸がミシンアームから左右方向に大きく張り出さず邪魔になり難い一方、短すぎても、支持する縫製枠の安定性が悪くなるからである。 The center pitch between the pair of guide shafts, or it is the 100~300mm is not particularly limited, and more preferably 150 to 250 mm. This is because the shorter the center-to-center pitch is, the more the guide shaft does not protrude from the sewing machine arm in the left-right direction, and it is difficult to get in the way.

本発明によれば、前後駆動機構とガイド軸とが縫製枠よりも上方にあるため、被縫製物が展張時に下方に垂れ下がる場合にも、その被縫製物が前後駆動機構やガイド軸に接触することはない。また、前後駆動機構のミシンアームの後端よりも前方に位置する部分は、ミシンアームの左右幅の平面投影範囲内に収まるので、該部分は、ミシンアームの下方又は内部に隠れてしまう。そのため、該前後駆動機構によって、縫製枠上に新たに死角が増えることはない。なお、ガイド軸は、小さいため、ミシンアーム又はその他の部材の下方又は内部に隠れていなくても、さほど死角は増えない。   According to the present invention, since the front / rear drive mechanism and the guide shaft are above the sewing frame, the sewing product contacts the front / rear drive mechanism and the guide shaft even when the sewing product hangs down during expansion. There is nothing. In addition, since the portion located in front of the rear end of the sewing machine arm of the front / rear drive mechanism is within the plane projection range of the horizontal width of the sewing machine arm, the portion is hidden below or inside the sewing machine arm. Therefore, the blind spot is not newly increased on the sewing frame by the front / rear drive mechanism. Since the guide shaft is small, the blind spot does not increase so much even if it is not hidden below or inside the sewing machine arm or other members.

本発明の実施例のミシンを示す平面図である。It is a top view which shows the sewing machine of the Example of this invention. 同実施例のミシンを示す正面断面図である。It is front sectional drawing which shows the sewing machine of the Example. 同実施例のミシンを示す側面断面図である。It is side surface sectional drawing which shows the sewing machine of the Example. 従来例1のミシンを示す平面図である。FIG. 10 is a plan view showing a sewing machine of Conventional Example 1. 従来例2のミシンを示す平面図である。FIG. 10 is a plan view showing a sewing machine of Conventional Example 2.

本実施例の図1〜図3に示す単頭ミシン9は、次に示すミシンヘッド10と、ベッド15と、縫製枠20と、支持枠25と、駆動枠29と、左右駆動機構30と、左右駆動用モータ35と、ガイドレール40と、前後駆動機構50と、前後駆動用モータ55と、一対のガイド軸60,60とを含み構成されている。   The single-head sewing machine 9 shown in FIGS. 1 to 3 of this embodiment includes a sewing head 10, a bed 15, a sewing frame 20, a support frame 25, a drive frame 29, a left / right drive mechanism 30, and The motor includes a left / right drive motor 35, a guide rail 40, a front / rear drive mechanism 50, a front / rear drive motor 55, and a pair of guide shafts 60, 60.

ミシンヘッド10は上糸を縫い付けるための部位であって、前後方向に水平に延びるミシンアーム11の前端に支持されている。そのミシンアーム11の後端11eは、縫製枠20の後方に設けられたアーム支持部12の上部前面に支持されている。   The sewing head 10 is a part for sewing an upper thread, and is supported by a front end of a sewing machine arm 11 extending horizontally in the front-rear direction. The rear end 11 e of the sewing machine arm 11 is supported on the upper front surface of the arm support portion 12 provided behind the sewing frame 20.

ベッド15は下糸を縫い付けるための部位であって、縫製枠20の下方後方から該縫製枠20の直下方にまで延びる突出部16の前端部に設けられている。   The bed 15 is a part for sewing the lower thread, and is provided at the front end portion of the protruding portion 16 that extends from the lower rear side of the sewing frame 20 to the position immediately below the sewing frame 20.

縫製枠20は、被縫製物Wを展張するための環状の枠であって、外枠21と内枠22とからなる。   The sewing frame 20 is an annular frame for spreading the workpiece W, and includes an outer frame 21 and an inner frame 22.

支持枠25は、縫製枠20を支持するための左右方向に延びる枠であって、左右方向両端部に前方に突出する支持部26,26を備えている。その支持部26,26に縫製枠20が支持される。   The support frame 25 is a frame extending in the left-right direction for supporting the sewing frame 20, and includes support portions 26, 26 protruding forward at both ends in the left-right direction. The sewing frame 20 is supported by the support portions 26 and 26.

駆動枠29は、支持枠25を左右方向に変位可能に支持するための左右方向に延びる枠であって、支持枠25の後方に設けられている。   The drive frame 29 is a frame extending in the left-right direction for supporting the support frame 25 so as to be displaceable in the left-right direction, and is provided behind the support frame 25.

左右駆動機構30は、支持枠25及びそれに支持された縫製枠20を駆動枠29に対して左右方向に駆動するための機構である。この左右駆動機構30は、駆動枠29の内部にて左右方向に間隔をおいて並設された一対のプーリ31,32と、該一対のプーリ31,32に架けられたベルト33とを含み構成されている。そして、ベルト33に支持枠25の後端部が連結されている。   The left / right drive mechanism 30 is a mechanism for driving the support frame 25 and the sewing frame 20 supported thereby in the left / right direction with respect to the drive frame 29. The left and right drive mechanism 30 includes a pair of pulleys 31 and 32 that are arranged in parallel in the drive frame 29 at intervals in the left and right direction, and a belt 33 that spans the pair of pulleys 31 and 32. Has been. The rear end portion of the support frame 25 is connected to the belt 33.

左右駆動用モータ35は、左右駆動機構30の一方のプーリ31を回転駆動するためのモータであって、駆動枠29の上面に設置されている。この左右駆動用モータは、一方のプーリ31に動力伝達機構36を介して接続されている。   The left / right drive motor 35 is a motor for rotationally driving one pulley 31 of the left / right drive mechanism 30, and is installed on the upper surface of the drive frame 29. The left and right drive motor is connected to one pulley 31 via a power transmission mechanism 36.

ガイドレール40は、支持枠25を左右方向にガイドするための左右方向に延びるレールであって、駆動枠29の内部に設けられている。このガイドレール40に、支持枠25の後端部が係合部材45を介して左右方向に変位可能に係合している。   The guide rail 40 is a rail extending in the left-right direction for guiding the support frame 25 in the left-right direction, and is provided inside the drive frame 29. A rear end portion of the support frame 25 is engaged with the guide rail 40 via an engagement member 45 so as to be displaceable in the left-right direction.

前後駆動機構50は、駆動枠29並びにそれに支持された支持枠25及び縫製枠20を前後方向に駆動するための前後方向に延びる機構である。この前後駆動機構50は、縫製枠20よりも上方におけるミシンアーム11の直下方からアーム支持部12の内部に架けて設けられており、該前後駆動機構50のミシンアーム11の後端11eよりも前方に位置する部分は、該ミシンアーム11の平面投影範囲内に収まっている。この前後駆動機構50は、ミシンアーム11の前部の下面に支持部材51aを介して支持された前側プーリ51と、その後方のアーム支持部12の内部に設けられた後側プーリ52と、両プーリ51,52に架けられたベルト53とを含み構成されている。そして、ベルト53に駆動枠29が連結部材54を介して連結されている。   The front-rear drive mechanism 50 is a mechanism extending in the front-rear direction for driving the drive frame 29 and the support frame 25 and the sewing frame 20 supported by the drive frame 29 in the front-rear direction. The front / rear drive mechanism 50 is provided in the arm support 12 from directly below the sewing machine arm 11 above the sewing frame 20, and more than the rear end 11 e of the sewing machine arm 11 of the front / rear drive mechanism 50. The portion located in the front is within the plane projection range of the sewing machine arm 11. The front / rear drive mechanism 50 includes a front pulley 51 supported on the lower surface of the front portion of the sewing machine arm 11 via a support member 51a, a rear pulley 52 provided inside the arm support portion 12 on the rear side, And a belt 53 spanned on pulleys 51 and 52. The drive frame 29 is coupled to the belt 53 via a coupling member 54.

前後駆動用モータ55は、後側プーリ52を回転駆動するためのモータであって、アーム支持部12の内部に設けられている。この前後駆動用モータ55は、後側プーリ52に動力伝達機構56を介して接続されている。   The front / rear drive motor 55 is a motor for rotationally driving the rear pulley 52 and is provided inside the arm support portion 12. The front / rear drive motor 55 is connected to the rear pulley 52 via a power transmission mechanism 56.

一対のガイド軸60,60は、駆動枠29を前後方向にガイドするための前後方向に延びる一対の軸であって、縫製枠20の上方における前後駆動機構50の左右両側に1本ずつ設けられている。この2本のガイド軸60,60の前端部は、ミシンアーム11の前部の下面に設けられて左右方向に延び、該ミシンアーム11の直下方から左方及び右方に突出した前端支持部61の左端部及び右端部にそれぞれ支持されている。また、該2本のガイド軸60,60の後端部は、アーム支持部12の左右の側面から左方及び右方にそれぞれ突出する一対の後端支持部62,62にそれぞれ支持されている。この一対のガイド軸60,60の中心間ピッチPは、150〜250mm程度となっている。この一対のガイド軸60,60に、駆動枠29が、係合部材65,65を介して前後方向に相対変位可能に係合している。   The pair of guide shafts 60, 60 are a pair of shafts extending in the front-rear direction for guiding the drive frame 29 in the front-rear direction, and are provided one on each of the left and right sides of the front-rear drive mechanism 50 above the sewing frame 20. ing. The front end portions of the two guide shafts 60, 60 are provided on the lower surface of the front portion of the sewing machine arm 11, extend in the left-right direction, and protrude to the left and right from directly below the sewing machine arm 11. 61 are respectively supported at the left end and the right end. The rear end portions of the two guide shafts 60, 60 are supported by a pair of rear end support portions 62, 62 projecting left and right from the left and right side surfaces of the arm support portion 12, respectively. . The center-to-center pitch P of the pair of guide shafts 60, 60 is about 150 to 250 mm. The drive frame 29 is engaged with the pair of guide shafts 60, 60 via engagement members 65, 65 so as to be relatively displaceable in the front-rear direction.

本実施例によれば、次の[A]〜[G]の効果を得ることができる。
[A]前後駆動機構50とガイド軸60,60とが縫製枠20よりも上方にあるため、被縫製物Wが展張時に下方に垂れ下がる場合にも、その被縫製物Wが前後駆動機構50やガイド軸60,60に接触することはない。
[B]前後駆動機構50のミシンアーム11の後端11eよりも前方に位置する部分は、ミシンアーム11の平面投影範囲内に収まるので、該部分は、ミシンアーム11の下方に隠れてしまう。そのため、該前後駆動機構50によって縫製枠20上に新たに死角が増えることはない。そのため、目視可能範囲を広く確保することができ、被縫製物Wの出来上がり等の確認、縫製枠20のセット等をし易くすることができる。
[C]一対のガイド軸60,60は、250mm以下の中心間ピッチPで設けられているので、ミシンアーム11から左右方向に大きく張り出すことはなく、邪魔になり難い。
[D]一対のガイド軸60,60は、150mm以上の中心間ピッチPで設けられているので、支持する駆動枠29の安定性が悪くなる心配もない。
[E]後側プーリ52と前後駆動用モータ55とは、アーム支持部12の内部に設けられているので、スペースをより有効的に使うことができ、単頭ミシン9がコンパクトになる。
[F]前後駆動機構50は、ミシンアーム11及びアーム支持部12に設けられているので、前後駆動機構50を支持する専用の支持フレームを設ける必要がない。そのため、部品点数が抑えられ、組立性が向上している。
[G]前後駆動機構50及び一対のガイド軸60,60を単頭ミシン9の中央に配置できるため、単頭ミシン9のバランスが向上する。
According to the present embodiment, the following effects [A] to [G] can be obtained.
[A] Since the front / rear drive mechanism 50 and the guide shafts 60, 60 are above the sewing frame 20, even when the sewing product W hangs down during expansion, the sewing product W is There is no contact with the guide shafts 60, 60.
[B] Since the portion of the front / rear drive mechanism 50 located in front of the rear end 11 e of the sewing machine arm 11 is within the plane projection range of the sewing machine arm 11, the portion is hidden under the sewing machine arm 11. Therefore, no new blind spot is added on the sewing frame 20 by the front / rear drive mechanism 50. Therefore, a wide visible range can be secured, and it is possible to easily confirm the completion of the sewing work W, set the sewing frame 20, and the like.
[C] Since the pair of guide shafts 60 and 60 are provided with a center-to-center pitch P of 250 mm or less, the pair of guide shafts 60 and 60 do not protrude greatly from the sewing machine arm 11 in the left-right direction, and do not easily get in the way.
[D] Since the pair of guide shafts 60, 60 are provided with a center-to-center pitch P of 150 mm or more, there is no concern that the stability of the drive frame 29 to be supported will deteriorate.
[E] Since the rear pulley 52 and the front and rear drive motor 55 are provided inside the arm support portion 12, space can be used more effectively, and the single-head sewing machine 9 becomes compact.
[F] Since the front / rear drive mechanism 50 is provided on the sewing machine arm 11 and the arm support portion 12, it is not necessary to provide a dedicated support frame for supporting the front / rear drive mechanism 50. Therefore, the number of parts is reduced and the assemblability is improved.
[G] Since the front-rear drive mechanism 50 and the pair of guide shafts 60, 60 can be arranged at the center of the single-head sewing machine 9, the balance of the single-head sewing machine 9 is improved.

なお、本発明は上記実施例に限定されるものではなく、発明の趣旨を逸脱しない範囲で各部の構成や形状を任意に変更して実施することもでき、例えば、次の変更例1,2のようにしてもよい。
[変更例1]
一対のガイド軸60,60の中心間ピッチPを図1に示す場合よりも狭くして、一対のガイド軸60,60がミシンアーム11の左右幅の平面投影範囲内に納まるようにしてもよい。この場合には、目視可能範囲をより広く確保することができる。
[変更例2]
前後駆動機構50を、図3に示す場合よりも上方に設け、前側プーリ51をミシンアーム11の内部に配してもよい。
The present invention is not limited to the above-described embodiment, and can be implemented by arbitrarily changing the configuration and shape of each part without departing from the spirit of the invention. It may be as follows.
[Modification 1]
The center-to-center pitch P of the pair of guide shafts 60 and 60 may be made narrower than that shown in FIG. 1 so that the pair of guide shafts 60 and 60 are within the plane projection range of the left and right width of the sewing machine arm 11. . In this case, a wider visible range can be secured.
[Modification 2]
The front / rear drive mechanism 50 may be provided above the case shown in FIG. 3, and the front pulley 51 may be arranged inside the sewing machine arm 11.

11 ミシンアーム
11e ミシンアームの後端
12 アーム支持部
20 縫製枠
50 前後駆動機構
51 前側プーリ
52 後側プーリ
53 ベルト
55 前後駆動用モータ
60 ガイド軸
DESCRIPTION OF SYMBOLS 11 Sewing machine arm 11e Rear end of sewing machine arm 12 Arm support part 20 Sewing frame 50 Front / rear drive mechanism 51 Front pulley 52 Rear pulley 53 Belt 55 Front / rear drive motor 60 Guide shaft

Claims (3)

被縫製物(W)を展張する縫製枠(20)の上方であり、かつ、前後方向に水平に延びるミシンアーム(11)の下方又は内部に、前記縫製枠(20)を前後方向に駆動するための前後方向に延びる前後駆動機構(50)を、該前後駆動機構の前記ミシンアーム(11)の後端(11e)よりも前方に位置する部分が、該ミシンアーム(11)の左右幅の平面投影範囲内に収まるように設け、
前記縫製枠(20)の上方であり、かつ、前記前後駆動機構(50)の左右両側に、前記縫製枠(20)を前後方向にガイドするための一対のガイド軸(60)の1本ずつを、前記一対のガイド軸(60)の中心間ピッチ(P)が100〜300mmになるように設け、
前記一対のガイド軸(60)の下方に、左右方向の長さが前記中心間ピッチ(P)よりも長い、前記縫製枠(20)を左右方向に駆動するための左右駆動機構(30)を、その上方に設けた一対の係合部材(65)を介して該一対のガイド軸(60)に相対変位可能に係合するように設け、
いずれのガイド軸(60)も、前記縫製枠(20)を左右方向に駆動する駆動力を伝達しないミシン。
The sewing frame (20) is driven in the front-rear direction above the sewing frame (20) for spreading the article to be sewn (W) and below or inside the sewing arm (11) extending horizontally in the front-rear direction. For the front / rear drive mechanism (50) extending in the front / rear direction, a portion of the front / rear drive mechanism located in front of the rear end (11e) of the sewing machine arm (11) has a lateral width of the sewing machine arm (11). Provided within the plane projection range,
One pair of guide shafts (60) for guiding the sewing frame (20) in the front-rear direction above the sewing frame (20) and on both the left and right sides of the front-rear drive mechanism (50). Is provided so that the center-to-center pitch (P) of the pair of guide shafts (60) is 100 to 300 mm,
A left-right drive mechanism (30) for driving the sewing frame (20) in the left-right direction below the pair of guide shafts (60) is longer in the left-right direction than the center-to-center pitch (P). And a pair of engaging members (65) provided thereabove so as to engage with the pair of guide shafts (60) so as to be relatively displaceable ,
None of the guide shafts (60) transmits a driving force for driving the sewing frame (20) in the left-right direction.
前記前後駆動機構(50)は、前後方向に間隔をおいて並設された前後一対のプーリ(51,52)と、該前後一対のプーリに架けられたベルト(53)とを含み構成され、
前記前後駆動機構(50)の後側のプーリ(52)と、該後側のプーリを回転駆動するモータ(55)とが、前記ミシンアーム(11)の後端を支持するアーム支持部(12)の内部に設けられた請求項1記載のミシン。
The front / rear drive mechanism (50) includes a pair of front and rear pulleys (51, 52) arranged side by side in the front / rear direction, and a belt (53) suspended between the pair of front / rear pulleys,
A rear pulley (52) of the front / rear drive mechanism (50) and a motor (55) for rotationally driving the rear pulley support an arm support (12) that supports the rear end of the sewing machine arm (11). The sewing machine according to claim 1, which is provided in the inside.
前記左右駆動機構(30)は、左右方向に前記一対のガイド軸(60)の中心間ピッチ(P)よりも広い中心間ピッチで並設された左右一対のプーリ(31,32)と、該左右一対のプーリに架けられたベルト(33)とを含み構成され、
前記左右駆動機構(30)の左右のいずれのプーリ(31,32)も、前記ガイド軸(60)に外嵌されていない請求項1又は2記載のミシン。
The left and right drive mechanism (30) includes a pair of left and right pulleys (31, 32) arranged in parallel in the left-right direction at a center-to-center pitch (P) wider than the center-to-center pitch (P) of the pair of guide shafts (60). A belt (33) hung on a pair of left and right pulleys,
The sewing machine according to claim 1 or 2, wherein none of the left and right pulleys (31, 32) of the left and right drive mechanism (30) are fitted on the guide shaft (60).
JP2009157810A 2009-07-02 2009-07-02 sewing machine Active JP5692973B2 (en)

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