Nothing Special   »   [go: up one dir, main page]

JP2006180977A - Adjusting mechanism for feeding of sewing machine - Google Patents

Adjusting mechanism for feeding of sewing machine Download PDF

Info

Publication number
JP2006180977A
JP2006180977A JP2004375500A JP2004375500A JP2006180977A JP 2006180977 A JP2006180977 A JP 2006180977A JP 2004375500 A JP2004375500 A JP 2004375500A JP 2004375500 A JP2004375500 A JP 2004375500A JP 2006180977 A JP2006180977 A JP 2006180977A
Authority
JP
Japan
Prior art keywords
feed
rotation
dial
feed adjustment
sewing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004375500A
Other languages
Japanese (ja)
Inventor
Kotaro Miyazaki
宮崎耕太郎
Kazutoshi Umeda
和俊 梅田
Yukihiro Wakasugi
幸弘 若杉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP2004375500A priority Critical patent/JP2006180977A/en
Priority to CN 200510138147 priority patent/CN1796633B/en
Publication of JP2006180977A publication Critical patent/JP2006180977A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Sewing Machines And Sewing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To enlarge the adjusting range of cloth feeding quantity so as to enable to finely adjust by operating a feed adjusting dial for a plurality of times. <P>SOLUTION: A forward feed adjusting dial 35 has a shaft member 35a moving forward and rearward by the turning operation of the same, a forward feed adjustor 36 has a cam portion 36a to which the shaft member 35a of the forward feed adjusting dial 35 abuts. A first feed adjusting cam face 36b formed in a length corresponding to the first one rotation of the feed adjusting dial and a second feed adjusting cam face 36c which second feed adjusting cam face 36c is connected continuously to the first feed adjusting cam face 36b and which is formed in a length corresponding to the next one rotation of the forward feed adjusting dial 35 are formed in the cam portion 36a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、送り調節ダイヤルを1回転又は1回転以上回動操作できるようにし、布送りの為の布送り量を調節する調節範囲を拡大できるようにしたものに関する。   The present invention relates to an apparatus in which a feed adjustment dial can be rotated once or more than once and an adjustment range for adjusting a cloth feed amount for cloth feed can be expanded.

従来、工業用ミシンや家庭用ミシンには、加工布の布送り量を正送りと逆送りに切換えでき、しかも布送り量を送り調節ダイヤルの回動操作により調節可能にする送り調節機構が設けられている。   Conventionally, industrial sewing machines and household sewing machines are provided with a feed adjustment mechanism that allows the cloth feed amount of the work cloth to be switched between forward feed and reverse feed, and that the cloth feed amount can be adjusted by rotating the feed adjustment dial. It has been.

例えば、特許文献1に記載のミシンは、ミシン本体の内部に、正送り面と逆送り面とをV字状に形成した送り調節器と、V字状のカム面に当接可能な送り調節ネジを先端部に有する操作ダイヤルとを設けるとともに、ベッド部の内部に、送り調節器に連竿を介して連結され、送り歯による布送り量を発生させる送り切換え器等を設け、操作ダイヤルを回動操作して送り調節器の傾きを変更すると、この変更により送り切換え器の傾きも変更され、送り歯の布送量を変更できるようになっている。   For example, the sewing machine described in Patent Document 1 includes a feed adjuster in which a forward feed surface and a reverse feed surface are formed in a V shape inside a sewing machine body, and a feed adjustment capable of coming into contact with a V-shaped cam surface. An operation dial having a screw at the tip is provided, and a feed changer that is connected to the feed adjuster via a linkage and generates a cloth feed amount by a feed dog is provided inside the bed. When the tilt of the feed adjuster is changed by rotating, the tilt of the feed changer is also changed by this change, and the cloth feed amount of the feed dog can be changed.

但し、このミシンにおいては、操作ダイヤルに規制突起が設けられているため、操作ダイヤルを手動操作するに際して、その規制突起がミシン本体側の規制部に当接する範囲内、つまり操作ダイヤルを1回転の範囲内で回動操作できるようにしてある。そのため、送り歯による布送り量の調節範囲は、操作ダイヤルの1回転だけに制限されている。
特開平6−292778号公報 (第3頁、図1)
However, in this sewing machine, since the operation dial is provided with a restriction protrusion, when the operation dial is manually operated, the restriction protrusion comes into contact with the restriction portion on the machine body side, that is, the operation dial is rotated once. It can be rotated within the range. Therefore, the adjustment range of the cloth feed amount by the feed dog is limited to one rotation of the operation dial.
JP-A-6-292778 (page 3, FIG. 1)

前述したように、特許文献1のミシンにおいては、布送り量を手動による回動操作で調節する操作ダイヤルの操作量は、1回転だけに制限されている。特に、千鳥縫いミシンにおいては、このように操作ダイヤルの操作量が1回転だけに制限されていても、操作ダイヤルの1回転操作により布送り量を0〜約2.5mm まで変更できるので、通常の千鳥縫いに対処することができる。   As described above, in the sewing machine disclosed in Patent Document 1, the operation amount of the operation dial that adjusts the cloth feed amount by manual rotation is limited to one rotation. In particular, in the staggered sewing machine, even if the operation amount of the operation dial is limited to one rotation as described above, the cloth feed amount can be changed from 0 to about 2.5 mm by one operation of the operation dial. Can cope with staggered stitches.

しかし、千鳥縫いミシンを本縫いミシン(直線縫いミシン)として使用する場合には、2〜3mmの大きな布送り量を必要とする場合がある。この場合には、操作ダイヤルの1回転で布送り量を0〜約5mmまで変更できる送り調節器と交換するか、或いは、操作ダイヤルの1回転操作により布送り量を0〜約5mmまで大きく変更できる別の千鳥縫いミシンを使用せざるを得ない状態であるため、1台の千鳥縫いミシンの布送り量における融通性、適応性が悪いという問題がある。   However, when the zigzag stitch machine is used as a main stitch machine (straight stitch machine), a large cloth feed amount of 2 to 3 mm may be required. In this case, replace with a feed adjuster that can change the cloth feed amount from 0 to about 5 mm with one rotation of the operation dial, or greatly change the cloth feed amount from 0 to about 5 mm by one rotation of the operation dial. Since there is no choice but to use another zigzag sewing machine that can be used, there is a problem that the flexibility and adaptability of the cloth feed amount of one zigzag sewing machine is poor.

更に、操作ダイヤルの1回転操作により、布送り量を0〜約5mmまで大きく変更できる千鳥縫いミシンでは、布送り量を0〜約2.5mm まで変更できる千鳥縫いミシンに比べて、操作ダイヤルの所定回動量に対する布送り量の変化率が大きくなるため、布送りの微調節がしにくいこと、等の問題がある。   In addition, the zigzag sewing machine that can change the feed amount greatly from 0 to about 5 mm by one rotation of the operation dial is more suitable than the zigzag stitch machine that can change the feed amount from 0 to about 2.5 mm. Since the rate of change of the cloth feed amount with respect to the rotation amount increases, there is a problem that fine adjustment of the cloth feed is difficult.

請求項1のミシンの送り調節機構は、ミシンの機枠に設けられた送り調節ダイヤルと、この送り調節ダイヤルの調節量に応じて回動角度が調節される送り調節器と、その送り調節器の回動角度に応じて送り歯による布送り量を発生させる送り切換え器とを備えたミシンの送り調節機構において、送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、送り調節器は送り調節ダイヤルの軸部材が当接するカム部を有し、カム部に、送り調節ダイヤルの最初の1回転分に対応する長さに形成された第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって送り調節ダイヤルの次の1回転分に対応する長さに形成された第2の送り調節カム面とを形成したものである。   According to another aspect of the present invention, there is provided a feed adjustment mechanism for a sewing machine, a feed adjustment dial provided in a machine frame of the sewing machine, a feed adjuster whose rotation angle is adjusted according to an adjustment amount of the feed adjustment dial, and the feed adjuster. In a feed adjustment mechanism for a sewing machine having a feed changer that generates a cloth feed amount by a feed dog according to the rotation angle of the feed, the feed adjustment dial has a shaft member that moves forward and backward by the rotation operation, and feed adjustment The device has a cam portion with which the shaft member of the feed adjustment dial comes into contact. The cam portion has a first feed adjustment cam surface formed to a length corresponding to the first rotation of the feed adjustment dial, A second feed adjustment cam surface that is continuous with one feed adjustment cam surface, and is formed with a second feed adjustment cam surface that has a length corresponding to the next one rotation of the feed adjustment dial. is there.

ミシンの機枠に設けられた送り調節ダイヤルを手動で回動操作する場合、送り調節ダイヤルの最初の1回転においては、送り調節ダイヤルの軸部材が送り調節器に形成された第1の送り調節カム面に当接しながら移動するので、送り調節ダイヤルの調節量に応じて送り調節器の回動角度が調節され、その送り調節器の回動角度に応じて送り切換え器により、送り調節ダイヤルの最初の1回転分の調節量に応じた布送り量が発生する。   When the feed adjustment dial provided on the machine frame of the sewing machine is manually operated to rotate, the first feed adjustment in which the shaft member of the feed adjustment dial is formed in the feed adjuster during the first rotation of the feed adjustment dial. Since it moves while coming into contact with the cam surface, the rotation angle of the feed adjuster is adjusted according to the adjustment amount of the feed adjustment dial. A cloth feed amount corresponding to the adjustment amount for the first rotation is generated.

更に、送り調節ダイヤルの次の1回転においては、送り調節ダイヤルの軸部材が送り調節器に形成された第2の送り調節カム面に当接しながら移動するので、前述したように送り切換え器により、送り調節ダイヤルの次の1回転分の調節量に応じた布送り量が発生する。   Further, in the next one rotation of the feed adjustment dial, the shaft member of the feed adjustment dial moves while abutting against the second feed adjustment cam surface formed on the feed adjuster. The cloth feed amount corresponding to the adjustment amount for the next one rotation of the feed adjustment dial is generated.

しかも、第1の送り調節カム面と第2の送り調節カム面の各々は、送り調節ダイヤルの1回転分に対応する長さであるため、送り調節ダイヤルの最初の1回転においても、次の1回転においても、布送り量を同様に微調節が可能である。それ故、例えば、送り調節ダイヤルの最初の1回転により、布送り量を0〜2.5mm まで調節できるのに加えて、送り調節ダイヤルの次の1回転により、布送り量を2.5 〜5mmまで調節できる。   In addition, each of the first feed adjustment cam surface and the second feed adjustment cam surface has a length corresponding to one rotation of the feed adjustment dial. Even in one rotation, the cloth feed amount can be finely adjusted in the same manner. Therefore, for example, in addition to being able to adjust the fabric feed amount from 0 to 2.5 mm by the first rotation of the feed adjustment dial, the fabric feed amount can be adjusted from 2.5 to 5 mm by the next rotation of the feed adjustment dial. it can.

請求項2のミシンの送り調節機構は、請求項1の発明において、前記送り調節ダイヤルの軸部材と直交する面に対する、第1の送り調節カム面の傾斜角よりも第2の送り調節カム面の傾斜角の方が小さくなるように変更されたものである。   According to a second aspect of the present invention, there is provided a feed adjustment mechanism for the sewing machine according to the first aspect, wherein the second feed adjustment cam surface is larger than an inclination angle of the first feed adjustment cam surface with respect to a surface orthogonal to the shaft member of the feed adjustment dial. The inclination angle is changed so as to be smaller.

請求項3のミシンの送り調節機構は、請求項1又は2の発明において、前記送り調節ダイヤルが最初の約1回転分回動した位置で送り調節ダイヤルの回動を規制する回動規制部材を設けたものである。   According to a third aspect of the present invention, there is provided a feed regulating mechanism for the sewing machine according to the first or second aspect, wherein the feed regulating dial is configured to regulate the turning of the feed adjusting dial at a position where the feed adjusting dial is rotated by about the first rotation. It is provided.

請求項4のミシンの送り調節機構は、請求項3の発明において、前記回動規制部材による送り調節ダイヤルの回動規制を解除可能な規制解除部材を設けたものである。   According to a fourth aspect of the present invention, there is provided a feed adjustment mechanism for the sewing machine according to the third aspect, wherein a restriction release member capable of releasing the rotation restriction of the feed adjustment dial by the rotation restriction member is provided.

請求項5のミシンの送り調節機構は、請求項4の発明において、回動規制部材は機枠内において進退可能に且つその先端部が送り調節ダイヤルの係合部に当接可能に付勢手段により弾性付勢され、規制解除部材は回動規制部材に係合する係合部材とこの係合部材を介して回動規制部材を係合部との係合を解除可能に解除操作する解除操作部とを有するものである。   According to a fifth aspect of the present invention, there is provided the feed adjusting mechanism for the sewing machine according to the fourth aspect of the invention, wherein the rotation restricting member is capable of advancing and retreating within the machine frame, and its urging portion can be brought into contact with the engaging portion of the feed adjusting dial. The release operation that is elastically urged by and the release operation for releasing the restriction so that the engagement between the engagement member engaging with the rotation restriction member and the engagement of the rotation restriction member via the engagement member can be released. Part.

請求項6のミシンの送り調節機構は、請求項5の発明において、前記解除操作部を係合部材に一体形成したものである。   According to a sixth aspect of the present invention, there is provided a feed adjusting mechanism for the sewing machine according to the fifth aspect, wherein the release operation portion is integrally formed with the engaging member.

請求項7のミシンの送り調節機構は、請求項1〜6の何れかの発明において、前記送り調節ダイヤルの表示面に、最初の1回転分の布送り目盛りと次の1回転分の布送り目盛りとを並記したものである。   According to a seventh aspect of the present invention, there is provided a sewing machine feed adjustment mechanism according to any one of the first to sixth aspects of the present invention, wherein the first feed-feed scale and the next feed-feed scale are displayed on the display surface of the feed adjustment dial. The scale is written in parallel.

請求項8のミシンの送り調節機構は、請求項7の発明において、前記1回転分の布送り目盛りと次の1回転分の布送り目盛りの表示形態を異ならせたものである。   According to an eighth aspect of the present invention, there is provided a sewing machine feed adjusting mechanism according to the seventh aspect of the invention, wherein the display form of the one-revolution cloth feed scale is different from that of the next one-turn cloth feed scale.

請求項9のミシンの送り調節機構は、ミシンの機枠に設けられた送り調節ダイヤルと、この送り調節ダイヤルの調節量に応じて回動角度が調節される送り調節器と、その送り調節器の回動角度に応じて送り歯による布送り量を発生させる送り切換え器とを備えたミシンの送り調節機構において、送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、送り調節器は送り調節ダイヤルの軸部材が当接するカム部であって送り調節ダイヤルの1回転分に対応する長さに形成されたカム部を有し、カム部に、第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって第1の送り調節カム面の傾斜角よりも小さい傾斜角を有する第2の送り調節カム面とを形成したものである。   A feed adjustment mechanism for a sewing machine according to claim 9 includes a feed adjustment dial provided in a machine frame of the sewing machine, a feed adjuster whose rotation angle is adjusted according to an adjustment amount of the feed adjustment dial, and the feed adjuster. In a feed adjustment mechanism for a sewing machine having a feed changer that generates a cloth feed amount by a feed dog according to the rotation angle of the feed, the feed adjustment dial has a shaft member that moves forward and backward by the rotation operation, and feed adjustment The device has a cam portion with which the shaft member of the feed adjustment dial contacts and is formed with a length corresponding to one rotation of the feed adjustment dial. The cam portion includes a first feed adjustment cam surface and And a second feed adjustment cam surface that is continuous with the first feed adjustment cam surface and has an inclination angle smaller than the inclination angle of the first feed adjustment cam surface. Is.

ミシンの機枠に設けられた送り調節ダイヤルを手動で回動操作する場合、送り調節ダイヤルの1回転において、送り調節ダイヤルの軸部材が送り調節器に形成された第1の送り調節カム面と第2の送り調節カム面に当接しながら移動する際に、第2の送り調節カム面の傾斜角の方が第1の送り調節カム面の傾斜角よりも小さいので、送り調節ダイヤルを1回転させる間に、第1の送り調節カム面により小さな布送り量が発生するとともに、第2の送り調節カム面により大きな布送り量が発生する。   When the feed adjustment dial provided on the machine frame of the sewing machine is manually rotated, the shaft member of the feed adjustment dial is formed with the first feed adjustment cam surface formed on the feed adjuster in one rotation of the feed adjustment dial. When moving while contacting the second feed adjustment cam surface, the tilt angle of the second feed adjustment cam surface is smaller than the tilt angle of the first feed adjustment cam surface, so the feed adjustment dial is rotated once. During this time, a small cloth feed amount is generated by the first feed adjustment cam surface, and a large cloth feed amount is generated by the second feed adjustment cam surface.

それ故、例えば、送り調節ダイヤルの3/4回転により、布送り量を0〜2.5mm まで調節できるのに加えて、送り調節ダイヤルの最後の1/4回転により、布送り量を2.5 〜5mmまで調節できる。   Therefore, for example, in addition to being able to adjust the cloth feed amount to 0 to 2.5 mm by 3/4 rotation of the feed adjustment dial, the cloth feed amount can be adjusted to 2.5 to 5 mm by the last 1/4 rotation of the feed adjustment dial. Can be adjusted up to.

請求項1の発明によれば、送り調節ダイヤルと送り調節器と送り切換え器とを備えたミシンの送り調節機構において、送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、送り調節器は送り調節ダイヤルの軸部材が当接するカム部を有し、カム部に、送り調節ダイヤルの最初の1回転分に対応する長さに形成された第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって送り調節ダイヤルの次の1回転分に対応する長さに形成された第2の送り調節カム面とを形成したので、送り調節ダイヤルの最初の1回転で送り調節ダイヤルの最初の1回転分の調節量に応じた布送り量を発生させることができ、更に、送り調節ダイヤルの次の1回転で送り調節ダイヤルの最初の1回転分の調節量に応じた布送り量を発生させることができるので、1台のミシンにおける布送り量において、融通性や適応性を格段に向上させることができる。   According to the first aspect of the present invention, in the feed adjusting mechanism of the sewing machine provided with the feed adjusting dial, the feed adjuster, and the feed switching device, the feed adjusting dial has the shaft member that moves forward and backward by the turning operation. The adjuster has a cam portion with which the shaft member of the feed adjustment dial abuts, and the cam portion has a first feed adjustment cam surface formed in a length corresponding to the first rotation of the feed adjustment dial, Since the second feed adjustment cam surface that is continuous with the first feed adjustment cam surface and has a length corresponding to the next rotation of the feed adjustment dial is formed. The first feed rotation of the feed adjustment dial can generate a cloth feed amount corresponding to the adjustment amount for the first rotation of the feed adjustment dial. For the adjustment amount for the first rotation It is possible to generate a cloth feed quantity Flip was, in the cloth feed amount in one of the sewing machine, the flexibility and adaptability can be improved remarkably.

しかも、第1の送り調節カム面と第2の送り調節カム面の各々は、送り調節ダイヤルの1回転分に対応する長さであるため、送り調節ダイヤルの最初の1回転においても、次の1回転においても、布送り量を同様に微調節することが可能になる。   In addition, each of the first feed adjustment cam surface and the second feed adjustment cam surface has a length corresponding to one rotation of the feed adjustment dial. Even in one rotation, the cloth feed amount can be finely adjusted in the same manner.

請求項2の発明によれば、前記送り調節ダイヤルの軸部材と直交する面に対する、第1の送り調節カム面の傾斜角よりも第2の送り調節カム面の傾斜角の方が小さくなるように変更したので、送り調節ダイヤルの回動操作によりその軸部材が進退移動しても、送り調節器の回動角度を調節して、送り調節ダイヤルの最初の1回転分の布送りの変化量と、送り調節ダイヤルの次の1回転分の布送りの変化量とを略同じに設定することができる。その他請求項1と同様の効果を奏する。   According to the invention of claim 2, the inclination angle of the second feed adjustment cam surface is smaller than the inclination angle of the first feed adjustment cam surface with respect to the surface orthogonal to the shaft member of the feed adjustment dial. Therefore, even if the shaft member moves forward and backward due to the turning operation of the feed adjustment dial, the amount of change in the cloth feed for the first rotation of the feed adjustment dial is adjusted by adjusting the turning angle of the feed adjustment dial. And the change amount of the cloth feed for the next one rotation of the feed adjustment dial can be set substantially the same. Other effects similar to those of the first aspect are obtained.

請求項3の発明によれば、前記送り調節ダイヤルが最初の約1回転分回動した位置で送り調節ダイヤルの回動を規制する回動規制部材を設けたので、送り調節ダイヤルの最初の約1回転分の回動範囲を規制でき、不用意に次の1回転分の回動範囲への進入を強制的に防止することができる。その他請求項1又は2と同様の効果を奏する。   According to the third aspect of the present invention, since the rotation regulating member for regulating the rotation of the feed adjusting dial is provided at the position where the feed adjusting dial is rotated by about the first rotation, the first approx. The rotation range for one rotation can be restricted, and inadvertent entry into the rotation range for the next rotation can be forcibly prevented. Other effects similar to those of the first or second aspect are achieved.

請求項4の発明によれば、前記回動規制部材による送り調節ダイヤルの回動規制を解除可能な規制解除部材を設けたので、必要に応じて規制解除部材の回動規制を解除するだけで、送り調節ダイヤルの次の1回転分の回動範囲への切換えが容易になる。その他請求項1〜3の何れかと同様の効果を奏する。   According to the invention of claim 4, since the restriction releasing member capable of releasing the rotation restriction of the feed adjustment dial by the rotation restriction member is provided, it is only necessary to release the rotation restriction of the restriction releasing member as necessary. It becomes easy to switch to the rotation range for the next one rotation of the feed adjustment dial. Other effects similar to those of any one of claims 1 to 3 are provided.

請求項5の発明によれば、回動規制部材は機枠内において進退可能に且つその先端部が送り調節ダイヤルの係合部に当接可能に付勢手段により弾性付勢され、規制解除部材は回動規制部材に係合する係合部材とこの係合部材を介して回動規制部材を係合部との係合を解除可能に解除操作する解除操作部とを有するので、弾性付勢された回動規制部材を、その付勢方向と反対方向に解除操作部を解除操作するだけで、回動規制部材と送り調節ダイヤルの係合部との係合を容易に解除することができる。   According to the invention of claim 5, the rotation restricting member is elastically urged by the urging means so that the rotation restricting member can advance and retreat in the machine frame and the front end thereof can be brought into contact with the engaging portion of the feed adjusting dial. Has an engagement member that engages with the rotation restricting member, and a release operation part that releases the engagement of the rotation restricting member with the engagement part via the engagement member. The engagement between the rotation restricting member and the engaging portion of the feed adjustment dial can be easily released simply by releasing the release restricting member in the direction opposite to the biasing direction. .

しかも、回動規制部材を機枠内に設けることで、これら回動規制部材や規制解除部材を設けた回動規制機構の小型化や操作性の向上を図ることができる。その他請求項4と同様の効果を奏する。   In addition, by providing the rotation restricting member in the machine casing, it is possible to reduce the size and improve the operability of the rotation restricting mechanism provided with the rotation restricting member and the restriction releasing member. Other effects similar to those of the fourth aspect are achieved.

請求項6の発明によれば、前記解除操作部を係合部材に一体形成したので、部品点数を減少させることで、回動規制部材や規制解除部材を設けた回動規制機構の小型化だけでなく、組付け性の向上や低コスト化を図ることができる。その他請求項5と同様の効果を奏する。   According to the invention of claim 6, since the release operation part is integrally formed with the engaging member, only the downsizing of the rotation restriction mechanism provided with the rotation restriction member and the restriction release member is achieved by reducing the number of parts. In addition, it is possible to improve the assembly and reduce the cost. Other effects similar to those of the fifth aspect are obtained.

請求項7の発明によれば、前記送り調節ダイヤルの表示面に、最初の1回転分の布送り目盛りと次の1回転分の布送り目盛りとを並記したので、送り調節ダイヤルの夫々の回動範囲における布送り量が、目盛りを介して容易に分かる。その他請求項1〜6の何れかと同様の効果を奏する。   According to the seventh aspect of the present invention, the cloth feed scale for the first rotation and the cloth feed scale for the next one rotation are written side by side on the display surface of the feed adjustment dial. The cloth feed amount in the rotation range can be easily understood through the scale. Other effects similar to those of any one of claims 1 to 6 can be achieved.

請求項8の発明によれば、前記1回転分の布送り目盛りと次の1回転分の布送り目盛りの表示形態を異ならせたので、その表示形態を介して、1回転分の布送り目盛りと、次の1回転分の布送り目盛りとを間違いなく正確に認識することができる。その他請求項7と同様の効果を奏する。   According to the invention of claim 8, since the display form of the cloth feed scale for one rotation and the cloth feed scale for the next one rotation are made different, the cloth feed scale for one rotation is changed through the display form. And the cloth feed scale for the next one rotation can be accurately recognized. Other effects similar to those of the seventh aspect are achieved.

請求項9の発明によれば、送り調節ダイヤルと送り調節器と送り切換え器とを備えたミシンの送り調節機構において、送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、送り調節器は送り調節ダイヤルの軸部材が当接するカム部であって送り調節ダイヤルの1回転分に対応する長さに形成されたカム部を有し、カム部に、第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって第1の送り調節カム面の傾斜角よりも小さい傾斜角を有する第2の送り調節カム面とを形成したので、送り調節ダイヤルを1回転させる間に、第1の送り調節カム面により小さな布送り量を発生させることができ、更に、これに続く第2の送り調節カム面により大きな布送り量を連続的に発生させることができるので、1台のミシンによる布送り量において、融通性や適応性を格段に向上させることができる。   According to the ninth aspect of the present invention, in the feed adjusting mechanism of the sewing machine provided with the feed adjusting dial, the feed adjuster, and the feed switching device, the feed adjusting dial has the shaft member that moves forward and backward by the turning operation. The adjuster has a cam portion with which a shaft member of the feed adjustment dial comes into contact, and has a cam portion formed in a length corresponding to one rotation of the feed adjustment dial. The cam portion includes a first feed adjustment cam surface. And a second feed adjusting cam surface that is continuous with the first feed adjusting cam surface and has an inclination angle smaller than the inclination angle of the first feed adjusting cam surface. Therefore, a small cloth feed amount can be generated by the first feed adjustment cam surface during one rotation of the feed adjustment dial, and a larger cloth feed amount can be generated by the second feed adjustment cam surface following this. Can be generated continuously Runode, the cloth feed amount by the one sewing machine, the flexibility and adaptability can be improved remarkably.

本実施例の千鳥縫いミシンは、送り調節ダイヤルの先端部の軸部材が当接する送り調節器のカム部に、第1の送り調節カム面だけでなく、第2の送り調節カム面を拡張して形成し、送り調節ダイヤルを最初の1回転に加えて次の1回転分の回動操作により、調節可能な布送り量を略2倍に拡大できるようにしてある。   The staggered sewing machine of this embodiment extends not only the first feed adjustment cam surface but also the second feed adjustment cam surface to the cam portion of the feed adjuster with which the shaft member at the tip of the feed adjustment dial abuts. In addition to the first rotation of the feed adjustment dial, the adjustable amount of cloth feed can be increased by a factor of approximately two by a rotation operation for the next one rotation.

以下、本発明の実施例について図面を参照して説明する。
図1に示すように、千鳥縫いミシンMは、ベッド部1と、ベッド部1の右側部分に立設された脚柱部2と、ベッド部1と対向するように脚柱部2の上部から左方へ延びるアーム部3と、アーム部3の左部に設けられた頭部4とを有する。ベッド部1には糸切り機構(図示略)や回転釜(図示略)等が設けられ、その回転釜に下糸が巻かれたボビンが着脱自在に装着される。
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a staggered sewing machine M includes a bed portion 1, a pedestal portion 2 erected on the right side portion of the bed portion 1, and an upper portion of the pedestal portion 2 so as to face the bed portion 1. It has the arm part 3 extended to the left, and the head 4 provided in the left part of the arm part 3. The bed 1 is provided with a thread trimming mechanism (not shown), a rotary hook (not shown), and the like, and a bobbin around which a lower thread is wound is detachably mounted on the rotary hook.

アーム部3の内部には、図示を省略するが、ミシンモータで駆動される主軸が設けられ、頭部4には、その主軸により針棒5を上下駆動する針棒駆動機構(図示略)と、その針棒5を左右に揺動させる針棒揺動機構(図示略)等が設けられている。脚柱部2には、加工布を正方向に布送りする正布送り量を調節する正送り調節ダイヤル35と、加工布を逆方向に布送りする逆布送り量を調節する逆送り調節ダイヤル60と、返し縫いを手動操作で行う為の返し縫いレバー64等が設けられている。   Although not shown, a main shaft that is driven by a sewing machine motor is provided inside the arm portion 3, and a needle bar driving mechanism (not shown) that drives the needle bar 5 up and down by the main shaft is provided on the head 4. A needle bar swinging mechanism (not shown) for swinging the needle bar 5 from side to side is provided. The pedestal 2 includes a forward feed adjustment dial 35 that adjusts the normal cloth feed amount for feeding the work cloth in the forward direction, and a reverse feed adjustment dial that adjusts the reverse cloth feed amount for feeding the work cloth in the reverse direction. 60 and a reverse stitching lever 64 for performing reverse stitching manually.

次に、送り歯14を前後方向(布送り方向)に駆動するとともに、送り歯を上下方向に駆動する送り歯駆動機構10について説明する。ここで、後述する送り調節機構30は送り歯駆動機構10に連結されている。   Next, the feed dog drive mechanism 10 that drives the feed dog 14 in the front-rear direction (cloth feed direction) and drives the feed dog in the vertical direction will be described. Here, a feed adjusting mechanism 30 described later is connected to the feed dog driving mechanism 10.

図2,図3に示すように、ベッド部1には、機枠Fに回転可能に支持された左右方向向きの下軸11が配設され、図示外のタイミングベルトを介してミシンモータにより所定回転方向に駆動される。その下軸11の左端部に偏心軸12が固着されるとともに、偏心軸12の左端部が上下動リンク13を介して送り歯14の送り台15に連結されている。   As shown in FIGS. 2 and 3, the bed portion 1 is provided with a lower shaft 11 facing in the left-right direction rotatably supported by the machine frame F, and is predetermined by a sewing machine motor via a timing belt (not shown). Driven in the direction of rotation. The eccentric shaft 12 is fixed to the left end portion of the lower shaft 11, and the left end portion of the eccentric shaft 12 is connected to the feed base 15 of the feed dog 14 via the vertical movement link 13.

一方、下軸11の後側に、機枠Fに回転可能に支持された下軸11と平行な揺動軸16が配設され、送り台15の後端部がその揺動軸16に固着した送りレバー17の上端部に枢支されている。それ故、ミシンモータにより下軸11が回転駆動されると、偏心軸12の上下揺動と前後揺動のうち、上下動リンク13により水平揺動が抑制されるため、送り台15はその後端部を揺動支点として上下に駆動される。   On the other hand, on the rear side of the lower shaft 11, a swing shaft 16 parallel to the lower shaft 11 rotatably supported by the machine frame F is disposed, and the rear end portion of the feed base 15 is fixed to the swing shaft 16. The feed lever 17 is pivotally supported at the upper end. Therefore, when the lower shaft 11 is rotationally driven by the sewing machine motor, the horizontal swing is suppressed by the vertical movement link 13 among the vertical swing and the forward / backward swing of the eccentric shaft 12, so that the feed base 15 has a rear end. It is driven up and down using the part as a swing fulcrum.

一方、下軸11の前側に横向きの円筒状に形成された送り切換え器20が配設され、その送り切換え器20に、軸方向と直交状に形成された湾曲状の摺動溝20aに摺動駒(角駒)21が摺動可能に係合している。前後方向向きの連結リンク22の後端部が、揺動軸16の右端部に固着された揺動レバー23に連結され、その連結リンク22の前端部が摺動駒21に連結されている。   On the other hand, a feed changer 20 formed in a horizontal cylindrical shape is disposed on the front side of the lower shaft 11, and the feed changer 20 is slid into a curved slide groove 20a formed perpendicular to the axial direction. A moving piece (square piece) 21 is slidably engaged. The rear end portion of the connecting link 22 in the front-rear direction is connected to a swing lever 23 fixed to the right end portion of the swing shaft 16, and the front end portion of the connection link 22 is connected to the sliding piece 21.

連結リンク22はその前後方向の略途中部のやや後側において、下軸11に固着された偏心カム24に外嵌された環状の偏心輪25の一端部に連結されている。但し、送り切換え器20の水平軸回りの回動量は、後述する送り調節機構30で送り調節される。   The connecting link 22 is connected to one end portion of an annular eccentric ring 25 fitted on an eccentric cam 24 fixed to the lower shaft 11 at a slightly rear side in the middle of the front-rear direction. However, the amount of rotation of the feed changer 20 around the horizontal axis is adjusted by a feed adjusting mechanism 30 described later.

それ故、下軸11の回転により偏心輪25が上下動するので、連結リンク22はその後端部を揺動支点として前端部、つまり摺動駒21が摺動溝20aに沿って上下動する。このとき、送り切換え器20の水平軸回りの回動角度に応じて、連結リンク22が摺動駒21を介して前後に揺動、つまり布送りタイミングにおいて、正送り揺動又は逆送り揺動するので、連結リンク22に連結された揺動軸16の回動により送り台15が前後に揺動する。   Therefore, since the eccentric ring 25 moves up and down by the rotation of the lower shaft 11, the connecting link 22 moves up and down along the sliding groove 20 a with the front end, that is, the sliding piece 21, with the rear end serving as a swing fulcrum. At this time, the connecting link 22 swings back and forth via the sliding piece 21 according to the rotation angle of the feed switching device 20 around the horizontal axis, that is, the forward feed swing or the reverse feed swing at the cloth feed timing. Therefore, the feed base 15 swings back and forth by the rotation of the swing shaft 16 connected to the connecting link 22.

次に、前述した正及び逆送り調節ダイヤル35,60の調節量に応じて、正送り又は逆送りのための布送り量を発生させる送り調節機構30について説明する。この送り調節機構30は、正の布送り量を発生させる正送り調節機構31と、逆(負)の布送り量を発生させる逆送り調節機構32とを有している。そこで、先ず、正送り調節機構31について説明する。   Next, the feed adjustment mechanism 30 that generates the cloth feed amount for the forward feed or the reverse feed according to the adjustment amounts of the forward and reverse feed adjustment dials 35 and 60 described above will be described. The feed adjustment mechanism 30 includes a forward feed adjustment mechanism 31 that generates a positive cloth feed amount and a reverse feed adjustment mechanism 32 that generates a reverse (negative) cloth feed amount. First, the forward feed adjusting mechanism 31 will be described.

図2〜図6に示すように、脚柱部2の機枠Fに前後向きに形成されたネジ穴Faに、正送り調節ダイヤル35の軸部材35aが回動可能に螺合されている。即ち、正送り調節ダイヤル35は、作業者による回動操作により軸部材35aを介して進退移動(前後移動)するようになっている。軸部材35aの直ぐ後側に正送り調節器36が配設され、左右向きの枢支軸37を介して機枠Fに回動可能に支持されている。   As shown in FIGS. 2 to 6, a shaft member 35 a of a forward feed adjustment dial 35 is rotatably screwed into a screw hole Fa formed in the machine frame F of the pedestal column portion 2 in the front-rear direction. In other words, the forward feed adjustment dial 35 moves forward and backward (moves back and forth) via the shaft member 35a by a turning operation by an operator. A forward feed adjuster 36 is disposed immediately behind the shaft member 35a, and is rotatably supported by the machine frame F via a pivot shaft 37 that is directed to the left and right.

この正送り調節器36の後端部に枢支ピン38を介して上下方向向きの第1連結リンク39の上端部が連結され、この第1連結リンク39は後述する逆送り調節機構32に連結される第2連結リンク40を介して、送り調節軸42の右端部に固着された送り調節レバー41に連結されている。送り調節軸42の左端部に固着した作動レバー43に送り調節リンク44の後端部が連結され、送り調節リンク44の前端部が送り切換え器20の右端部に連結されている。   An upper end portion of a first connection link 39 that is vertically oriented is connected to a rear end portion of the forward feed adjuster 36 via a pivot pin 38, and the first connection link 39 is connected to a reverse feed adjustment mechanism 32 described later. The feed adjusting lever 41 is fixed to the right end of the feed adjusting shaft 42 through the second connecting link 40. The rear end portion of the feed adjusting link 44 is connected to the operating lever 43 fixed to the left end portion of the feed adjusting shaft 42, and the front end portion of the feed adjusting link 44 is connected to the right end portion of the feed switching unit 20.

それ故、正送り調節機構31又は逆送り調節機構32により第1及び第2リンク39,40と送り調節レバー41を介して送り調節軸42が回動されるので、送り調節リンク44の前後揺動により送り切換え器20の水平軸回りの回動角度が変更され、布送り量が調節される。   Therefore, the feed adjusting shaft 42 is rotated by the forward feed adjusting mechanism 31 or the reverse feed adjusting mechanism 32 via the first and second links 39 and 40 and the feed adjusting lever 41. By the movement, the rotation angle of the feed changer 20 around the horizontal axis is changed, and the cloth feed amount is adjusted.

正送り調節器36の前端部に、正送り調節ダイヤル35の軸部材35aの球状先端部を受け止めるカム部36aが形成されている。そのカム部36aには、図7に示すように、第1送り調節カム面36bと、この第1送り調節カム面36bに連続する第2送り調節カム面36cが形成されている。ここで、正送り調節ダイヤル35の軸部材35aと直交する面Sに対する、第1送り調節カム面36bの傾斜角αよりも第2送り調節カム面36cの傾斜角βの方が小さくなるように変更されている。   A cam portion 36 a that receives the spherical tip of the shaft member 35 a of the forward feed adjustment dial 35 is formed at the front end portion of the forward feed adjuster 36. As shown in FIG. 7, the cam portion 36a is formed with a first feed adjustment cam surface 36b and a second feed adjustment cam surface 36c continuous to the first feed adjustment cam surface 36b. Here, the inclination angle β of the second feed adjustment cam surface 36c is smaller than the inclination angle α of the first feed adjustment cam surface 36b with respect to the surface S orthogonal to the shaft member 35a of the forward feed adjustment dial 35. has been edited.

カム部36aにおける点uから点vまでの第1送り調節カム面36bは、正送り調節ダイヤル35の最初の1回転分に対応する長さL1で平面状に形成されるとともに、カム部36aにおける点vから点wまでの第2送り調節カム面36cは、送り調節ダイヤルの次の1回転分に対応する長さL2で平面状に形成されている。   The first feed adjustment cam surface 36b from the point u to the point v in the cam portion 36a is formed in a planar shape with a length L1 corresponding to the first rotation of the forward feed adjustment dial 35, and in the cam portion 36a. The second feed adjustment cam surface 36c from the point v to the point w is formed in a planar shape with a length L2 corresponding to the next one rotation of the feed adjustment dial.

次に、正送り調節ダイヤル35の軸部材35aの直ぐ左側に設けられた回動規制機構50について説明する。図4,図6に示すように、規制解除部材51を構成する円形の規制解除板51a(これが回動規制部材に係合する係合部材に相当する)に、細いガイドピン52と太い回動規制ピン53(これが回動規制部材に相当する)とがその先端部(前端部)において固着されている。ここで、規制解除部材51は規制解除板51aと、規制解除板51aの略左半部分の解除操作部51b等からなる。また、回動規制ピン53の鋭角状の先端部53aが規制解除板51を挿通して前方に突出している。   Next, the rotation restricting mechanism 50 provided on the left side of the shaft member 35a of the forward feed adjusting dial 35 will be described. As shown in FIGS. 4 and 6, a thin guide pin 52 and a thick rotation are provided on a circular restriction release plate 51 a constituting the restriction release member 51 (which corresponds to an engagement member that engages with the rotation restriction member). A restricting pin 53 (which corresponds to a rotation restricting member) is fixed at the front end (front end). Here, the restriction release member 51 includes a restriction release plate 51a, a release operation portion 51b on the substantially left half of the restriction release plate 51a, and the like. Further, an acute-angled tip 53a of the rotation restriction pin 53 is inserted through the restriction release plate 51 and protrudes forward.

機枠Fに前後方向向きのガイド穴Fbとピン穴Fcとが形成されており、ガイドピン52がガイド穴Fbに前方から嵌め込まれるとともに、回動規制ピン53とこれを弾性付勢する圧縮コイルバネ54とがピン穴Fcに嵌め込まれている。それ故、回動規制ピン53は機枠F内において前後方向に進退可能になっている。ここで、正送り調節ダイヤル35の後端近傍部且つ外周近傍部に環状壁部35cが形成され、その環状壁部35cに多数の点状凹部(図示略)が微小所定距離おきに円形に形成されている。   The machine frame F is formed with a front-rear direction guide hole Fb and a pin hole Fc. The guide pin 52 is fitted into the guide hole Fb from the front, and the rotation restricting pin 53 and a compression coil spring that elastically biases the rotation restricting pin 53. 54 is fitted in the pin hole Fc. Therefore, the rotation restricting pin 53 can be moved forward and backward in the machine frame F. Here, an annular wall portion 35c is formed in the vicinity of the rear end and in the vicinity of the outer periphery of the forward feed adjusting dial 35, and a large number of dot-like recesses (not shown) are formed in a circle every minute predetermined distance on the annular wall portion 35c. Has been.

それ故、圧縮コイルバネ54で前方にバネ付勢された回動規制ピン53の鋭角状先端部53aが、これら多数の点状凹部の何れかに押圧状に係合することで、正送り調節ダイヤル35を手動操作された操作位置に保持可能になっている。このように、回動規制ピン53がその鋭角状先端部35aを介して環状壁部35cに常に後方から押圧当接しているため、作業者による回動操作により正送り調節ダイヤル35が進退移動するのに同期して、回動規制ピン53が規制解除板51aを介してガイドピン52でガイドされながら前後に進退移動する。   Therefore, the forward-feeding adjustment dial is configured such that the acute-angled tip 53a of the rotation restricting pin 53 spring-biased by the compression coil spring 54 engages with any of these many point-like recesses in a pressing manner. 35 can be held in the manually operated operating position. As described above, since the rotation restricting pin 53 is always pressed against the annular wall portion 35c from the rear via the acute-angled tip portion 35a, the forward feed adjusting dial 35 is moved forward and backward by the turning operation by the operator. In synchronization with the rotation, the rotation restricting pin 53 moves forward and backward while being guided by the guide pin 52 via the restriction releasing plate 51a.

それ故、規制解除板51aと正送り調節ダイヤル35の操作部35bの後端との間に所定の係合隙間Sが常に設けられている。ところで、正送り調節ダイヤル35に有する環状壁部35cの一部に、後方に突出するブロック状の係合部35dが一体形成されている。但し、その係合部35dの操作部35bの後端から後方に突出する突出寸法tは、係合隙間Sより小さくなっている。   Therefore, a predetermined engagement gap S is always provided between the restriction release plate 51a and the rear end of the operation portion 35b of the forward feed adjustment dial 35. By the way, a block-shaped engaging portion 35d protruding rearward is integrally formed on a part of the annular wall portion 35c of the forward feed adjusting dial 35. However, the protrusion dimension t protruding rearward from the rear end of the operation portion 35b of the engagement portion 35d is smaller than the engagement gap S.

その為、正送り調節ダイヤル35を1回転させたとき、つまり正送り調節ダイヤル35を布送り量「0」の回動位置から反時計回りに最初の約1回転分回動させた位置で、係合部35dが回動規制ピン53の先端部35aに当接するので、正送り調節ダイヤル35の回動が規制される。   Therefore, when the forward feed adjustment dial 35 is rotated once, that is, at the position where the forward feed adjustment dial 35 is rotated counterclockwise from the rotational position of the cloth feed amount “0” by about the first rotation, Since the engaging portion 35d abuts on the tip portion 35a of the rotation restricting pin 53, the rotation of the forward feed adjusting dial 35 is restricted.

しかし、正送り調節ダイヤル35の反時計回りの回動操作が規制された場合でも、図9に2点鎖線で示すように、作業者の指で規制解除板51aの左端部を後方に押し込むことで、回動規制ピン53が同時に、突出寸法t以上に後方に退避するので、係合部35dが回動規制ピン53の先端部35aに干渉しなくなって回動規制が解除され、正送り調節ダイヤル35の反時計回りへの次の1回転分の回動が可能になる。   However, even when the counterclockwise turning operation of the forward feed adjustment dial 35 is restricted, the left end portion of the restriction release plate 51a is pushed backward with the operator's finger as shown by a two-dot chain line in FIG. Since the rotation restricting pin 53 is simultaneously retracted backward beyond the projecting dimension t, the engagement portion 35d does not interfere with the distal end portion 35a of the rotation restricting pin 53, the rotation restriction is released, and the forward feed adjustment is performed. The dial 35 can be rotated counterclockwise for one rotation.

このように、正送り調節ダイヤル35の最初の1回転分だけでなく、次の1回転分の回動により軸部材35aが第1送り調節カム面36bから第2送り調節カム面36cに移動するのに伴って、正送り調節器36の回動角度が随時変更される。即ち、正送り調節ダイヤル35の調節量に応じた正送り調節器36の回動角度に基づいて、前述したように送り調節軸42を介して送り切換え器20の水平軸回りの回動角度、つまり正布送り量が調節(変更)される。   Thus, the shaft member 35a moves from the first feed adjustment cam surface 36b to the second feed adjustment cam surface 36c not only by the first rotation of the forward feed adjustment dial 35 but also by the rotation of the next one rotation. Accordingly, the rotation angle of the forward feed adjuster 36 is changed as needed. That is, based on the rotation angle of the forward feed adjuster 36 according to the adjustment amount of the forward feed adjustment dial 35, as described above, the rotation angle around the horizontal axis of the feed switching device 20 via the feed adjustment shaft 42, That is, the regular cloth feed amount is adjusted (changed).

図1,図4に示すように、正送り調節ダイヤル35の操作部35bの前面である白い表示面35eには、その外周側に、最初の1回転分の正布送り目盛り「0〜2.5 」が、0.25mm間隔で黒数字及び棒記号で記載されるとともに、その内周側に、次の1回転分の正布送り目盛り「2.5 〜5」が、0.5mm 間隔で白抜き数字及び棒記号で記載されている。この場合、操作部35bの直ぐ上側に対応する機枠Fに円状に凹設された合わせ凹部Fdに、設定する正布送り量の数字や棒記号を一致させるようになっている。   As shown in FIGS. 1 and 4, the white display surface 35 e which is the front surface of the operation portion 35 b of the forward feed adjusting dial 35 has a positive cloth feed scale “0 to 2.5” for the first rotation on its outer peripheral side. Is written with black numbers and bar symbols at intervals of 0.25 mm, and the next one-turn regular cloth feed scale “2.5 to 5” is displayed at the inner circumference side with white numbers and bar symbols at intervals of 0.5 mm. It is described in. In this case, the number and bar symbol of the set normal cloth feed amount are made to coincide with the alignment recess Fd provided in a circle in the machine frame F corresponding to the upper side of the operation unit 35b.

次に、逆送り調節機構32について説明する。図2,図3に示すように、脚柱部2の機枠Fに前後向きに形成されたネジ穴(図示略)に、逆送り調節ダイヤル60の軸部材60aが回動可能に螺合されている。即ち、逆送り調節ダイヤル60は、作業者による回動操作により軸部材60aを介して進退移動(前後移動)するようになっている。軸部材60aの直ぐ後側に逆送り調節器61が配設され、左右向きの逆送り軸62を介して機枠Fに回動可能に支持されている。   Next, the reverse feed adjustment mechanism 32 will be described. As shown in FIGS. 2 and 3, the shaft member 60 a of the reverse feed adjustment dial 60 is rotatably screwed into a screw hole (not shown) formed in the machine frame F of the pedestal column portion 2 in the front-rear direction. ing. That is, the reverse feed adjustment dial 60 moves forward and backward (moves back and forth) via the shaft member 60a by a turning operation by an operator. A reverse feed adjuster 61 is disposed immediately behind the shaft member 60a, and is rotatably supported by the machine frame F via a reverse feed shaft 62 that is directed to the left and right.

逆送り軸62に連結レバー63と返し縫いレバー64の基端部とが固着されている。連結レバー63に、第1連結リンク39の下端部が連結されるとともに、第2連結リンク40の上端部が連結されている。逆送り調節器61の前端部に略鉛直向きのカム面61aが形成され、逆送り調節ダイヤル60の軸部材60aの球状先端部がそのカム面61aに前方から当接する。   The connecting lever 63 and the base end portion of the reverse stitching lever 64 are fixed to the reverse feed shaft 62. The lower end portion of the first connecting link 39 is connected to the connecting lever 63 and the upper end portion of the second connecting link 40 is connected to the connecting lever 63. A substantially vertical cam surface 61a is formed at the front end of the reverse feed adjuster 61, and the spherical tip of the shaft member 60a of the reverse feed adjustment dial 60 comes into contact with the cam surface 61a from the front.

そこで、逆送り調節ダイヤル60を時計回り又は反時計回りに回動操作することにより、軸部材60aの進退移動を介して逆送り調節器61の回動角度が随時変更される。即ち、逆送り調節ダイヤル60の調節量に応じた逆送り調節器61の回動角度に基づいて、逆送り軸62、連結レバー63、第2連結リンク40、送り調節レバー41と送り調節軸42を介して送り切換え器20の水平軸回りの回動角度、つまり逆布送り量が調節(変更)される。   Therefore, by turning the reverse feed adjustment dial 60 clockwise or counterclockwise, the turning angle of the reverse feed adjuster 61 is changed as needed through the forward / backward movement of the shaft member 60a. That is, based on the rotation angle of the reverse feed adjuster 61 corresponding to the adjustment amount of the reverse feed adjustment dial 60, the reverse feed shaft 62, the connecting lever 63, the second connecting link 40, the feed adjusting lever 41 and the feed adjusting shaft 42 are provided. The rotation angle around the horizontal axis of the feed changer 20, that is, the reverse cloth feed amount is adjusted (changed).

ところで、正送り調節ダイヤル35の反時計回りへの回動操作により正布送り量を拡大させる場合、正送り調節器36は側面視にて時計回りであり、第1連結リンク39が下方に移動するため、逆送り軸62と連結レバー63とは側面視にて時計回りである。即ち、逆送り調節器61は逆送り調節ダイヤル60の軸部材60aから離間するので、逆送り調節器61に干渉することなく、正の布送り量を発生させることができる。   By the way, when the positive cloth feed amount is increased by rotating the forward feed adjustment dial 35 counterclockwise, the forward feed adjuster 36 is clockwise in a side view, and the first connecting link 39 moves downward. Therefore, the reverse feed shaft 62 and the connecting lever 63 are clockwise in a side view. That is, since the reverse feed adjuster 61 is separated from the shaft member 60a of the reverse feed adjustment dial 60, a positive cloth feed amount can be generated without interfering with the reverse feed adjuster 61.

一方、逆送り調節ダイヤル60の反時計回りへの回動操作により逆送り量を拡大させる場合、逆送り調節器61は側面視にて反時計回りであり、第1連結リンク39が上方に移動するため、正送り調節器36は側面視にて反時計回りである。即ち、正送り調節器36は正送り調節ダイヤル35の軸部材35aから離間するので、正送り調節器36に干渉することなく、逆の布送り量を発生させることができる。   On the other hand, when the reverse feed amount is increased by rotating the reverse feed adjustment dial 60 counterclockwise, the reverse feed adjuster 61 is counterclockwise in a side view, and the first connecting link 39 moves upward. Therefore, the forward feed adjuster 36 is counterclockwise in a side view. That is, since the forward feed adjuster 36 is separated from the shaft member 35a of the forward feed adjustment dial 35, a reverse cloth feed amount can be generated without interfering with the forward feed adjuster 36.

図1,図4に示すように、逆送り調節ダイヤル60の操作部60bの前面である白い表示面60cには、逆布送り目盛り「0〜−5」が黒数字で記載されている。この場合、操作部60bの直ぐ上側に対応する機枠Fに円状に凹設された合わせ凹部Feに、設定する逆布送り量の数字を一致させるようになっている。   As shown in FIGS. 1 and 4, on the white display surface 60 c that is the front surface of the operation unit 60 b of the reverse feed adjustment dial 60, the reverse cloth feed scale “0 to −5” is written in black numerals. In this case, the number of the reverse cloth feed amount to be set is made to coincide with the matching recess Fe provided in a circle in the machine frame F corresponding to the upper side of the operation unit 60b.

次に、このように構成された正送り調節機構31と回動規制機構50の作用及び効果について説明する。   Next, operations and effects of the forward feed adjusting mechanism 31 and the rotation restricting mechanism 50 configured as described above will be described.

図5−1に示すように、正送り調節ダイヤル35の操作部35bを手動操作して、正布送り量「0」を設定した場合、図5−2に示すように、軸部材35aの先端部が第1送り調節カム面36bの奥側の点uに当接している。それ故、前述したように、正送り調節器36が特定の姿勢となり、送り切換え器20の水平軸回りの回動角度が特定の角度となるので、揺動軸16が揺動せず、正布送り量が「0」となる。   As shown in FIG. 5A, when the operation portion 35b of the forward feed adjustment dial 35 is manually operated to set the regular cloth feed amount “0”, as shown in FIG. Is in contact with a point u on the back side of the first feed adjustment cam surface 36b. Therefore, as described above, the forward feed adjuster 36 has a specific posture, and the rotation angle of the feed switching device 20 around the horizontal axis is a specific angle. The cloth feed amount becomes “0”.

図8−1に示すように、正送り調節ダイヤル35の操作部35bを手動操作して、正布送り量「0」から「2.5 」まで最初の約1回転分を回動操作した場合、図8−2に示すように、軸部材35aの先端部が第1送り調節カム面36bに沿って第1送り調節カム面36bの手前側の点vまで移動する。それ故、前述したように、正送り調節器36が時計回りに回動するので、図11に示すように、正の布送り量が最大で「約2.5 mm」まで調節が可能になる。   As shown in FIG. 8A, when the operation unit 35b of the forward feed adjustment dial 35 is manually operated and the first approximately 1 rotation is rotated from the normal cloth feed amount “0” to “2.5”, As shown in 8-2, the tip of the shaft member 35a moves along the first feed adjustment cam surface 36b to a point v on the near side of the first feed adjustment cam surface 36b. Therefore, as described above, since the forward feed adjuster 36 rotates clockwise, as shown in FIG. 11, the positive fabric feed amount can be adjusted to a maximum of “about 2.5 mm”.

このように、正送り調節ダイヤル35を最初の約1回転分回動させたとき、回動規制機構50により、係合部35dが回動規制ピン53の先端部53aに当接するので、正送り調節ダイヤル35の回動が規制される。それ故、正の布送り量を「0〜約2.5 mm」の範囲内で微調節することができ、不用意に、大きな正の布送り量が設定されないように制限されている。   Thus, when the forward feed adjusting dial 35 is rotated about the first about one turn, the engaging portion 35d is brought into contact with the tip end portion 53a of the turning restricting pin 53 by the turning restricting mechanism 50. The rotation of the adjustment dial 35 is restricted. Therefore, the positive cloth feed amount can be finely adjusted within the range of “0 to about 2.5 mm”, and it is restricted that a large positive cloth feed amount is not set carelessly.

ところで、千鳥縫いミシンMを本縫いミシン(直線縫いミシン)として使用する場合であって、3〜4mmの大きな正布送り量を必要とする場合には、図9に2点鎖線で示すように、作業者が指で規制解除板51aの解除操作部51bを後方に押し込んで解除操作するだけで、回動規制ピン53が同時に後方に退避するので、回動規制ピン53の先端部53aが係合部35dに干渉しなくなり、正送り調節ダイヤル35を更に次の1回転分の反時計回り方向への回動操作が可能になる。   By the way, when the staggered sewing machine M is used as a main sewing machine (straight stitching machine) and a large straight cloth feed amount of 3 to 4 mm is required, as shown by a two-dot chain line in FIG. The rotation restricting pin 53 is retracted backward simultaneously by pushing the release operation part 51b of the restriction releasing plate 51a backward with a finger, so that the tip 53a of the rotation restricting pin 53 is engaged. Interference with the joint portion 35d is eliminated, and the forward feed adjustment dial 35 can be further turned counterclockwise for one rotation.

この場合、図10−1に示すように、正送り調節ダイヤル35の操作部35bを、正布送り量「2.5 」から「5」まで次の約1回転分を回動操作した場合、図10−2に示すように、軸部材35aの先端部が第2送り調節カム面36cに沿って手前側の点wまで移動する。それ故、前述したように、正送り調節器36が更に時計回りに回動するので、図11に示すように、正の布送り量が最大で「約5 mm 」まで調節が可能になる。   In this case, as shown in FIG. 10A, when the operation unit 35b of the forward feed adjusting dial 35 is rotated about the next one rotation from the normal cloth feed amount “2.5” to “5”, FIG. As shown in -2, the tip of the shaft member 35a moves to the point w on the near side along the second feed adjustment cam surface 36c. Therefore, as described above, since the forward feed adjuster 36 further rotates clockwise, as shown in FIG. 11, the positive cloth feed amount can be adjusted to a maximum of “about 5 mm”.

このように、正送り調節ダイヤル35を次の約1回転分回動させたとき、回動規制機構50により、係合部35dが回動規制ピン53の先端部53aに当接するので、この場合にも、正送り調節ダイヤル35の回動が規制される。それ故、正の布送り量を「2.5 〜5mm」の範囲内で微調節することができ、不用意に、小さな正の布送り量が設定されないように制限されている。   Thus, when the forward feed adjustment dial 35 is rotated by about one turn, the engagement portion 35d is brought into contact with the tip end portion 53a of the rotation restriction pin 53 by the rotation restriction mechanism 50. In addition, the rotation of the forward feed adjustment dial 35 is restricted. Therefore, the positive cloth feed amount can be finely adjusted within the range of “2.5 to 5 mm”, and the positive cloth feed amount is inadvertently limited so as not to be set.

以上説明したように、正送り調節ダイヤル35はその回動操作により進退移動する軸部材35aを有し、正送り調節器36は正送り調節ダイヤル35の軸部材35aが当接するカム部36aを有し、そのカム部36aに、正送り調節ダイヤル35の最初の1回転分に対応する長さL1に形成された第1送り調節カム面36bと、正送り調節ダイヤル35の次の1回転分に対応する長さL2に形成された第2送り調節カム面36cとを形成したので、正送り調節ダイヤル35の最初の1回転で、「0〜約2.5 mm」の範囲で布送り量を適宜発生させることができる。   As described above, the forward feed adjustment dial 35 has the shaft member 35a that moves forward and backward by its turning operation, and the forward feed adjuster 36 has the cam portion 36a with which the shaft member 35a of the forward feed adjustment dial 35 abuts. The cam portion 36a includes a first feed adjustment cam surface 36b formed to a length L1 corresponding to the first rotation of the forward feed adjustment dial 35, and a next rotation of the forward feed adjustment dial 35. Since the second feed adjustment cam surface 36c formed with the corresponding length L2 is formed, the first feed rotation of the forward feed adjustment dial 35 appropriately generates the cloth feed amount in the range of “0 to about 2.5 mm”. Can be made.

更に、正送り調節ダイヤル35の次の1回転で、「約2.5 〜5mm」の範囲で正の大きな布送り量を適宜発生させることができるので、1台の千鳥縫いミシンMにおける布送り量において、融通性や適応性を格段に向上させることができる。   Further, in the next rotation of the forward feed adjusting dial 35, a large positive fabric feed amount can be appropriately generated in the range of “about 2.5 to 5 mm”. Therefore, in the fabric feed amount in one staggered sewing machine M, , Flexibility and adaptability can be greatly improved.

しかも、第1送り調節カム面36bと第2送り調節カム面36cの各々は、正送り調節ダイヤル35の1回転分に対応する長さであるため、正送り調節ダイヤル35の最初の1回転においても、次の1回転においても、正の布送り量を同様に微調節することが可能になる。   In addition, since each of the first feed adjustment cam surface 36b and the second feed adjustment cam surface 36c has a length corresponding to one rotation of the forward feed adjustment dial 35, in the first rotation of the forward feed adjustment dial 35, In the next one rotation, the positive cloth feed amount can be finely adjusted in the same manner.

また、正送り調節ダイヤル35の軸部材35aと直交する面Sに対する、第1送り調節カム面36bの傾斜角αよりも第2送り調節カム面36cの傾斜角βの方が小さくなるように変更されたので、正送り調節ダイヤル35の回動操作によりその軸部材35aが進退移動しても、正送り調節器36の回動角度を調節して、正送り調節ダイヤル35の最初の1回転分の布送りの変化量と、正送り調節ダイヤル35の次の1回転分の布送りの変化量とを略同じに設定することができる。   Further, the inclination angle β of the second feed adjustment cam surface 36c is changed to be smaller than the inclination angle α of the first feed adjustment cam surface 36b with respect to the surface S orthogonal to the shaft member 35a of the forward feed adjustment dial 35. Therefore, even if the shaft member 35a is moved forward and backward by the turning operation of the forward feed adjusting dial 35, the turning angle of the forward feeding adjuster 36 is adjusted, and the first turn of the forward feed adjusting dial 35 is adjusted. The change amount of the cloth feed and the change amount of the cloth feed for the next one rotation of the forward feed adjustment dial 35 can be set substantially the same.

また、正送り調節ダイヤル35が最初の約1回転分回動した位置で正送り調節ダイヤル35の回動を規制する回動規制ピン53を設けたので、正送り調節ダイヤル35の最初の約1回転分の回動範囲を規制でき、不用意に次の1回転分の回動範囲への進入を強制的に防止することができる。   Further, since the rotation regulation pin 53 for regulating the rotation of the forward feed adjustment dial 35 is provided at the position where the forward feed adjustment dial 35 is rotated by about the first rotation, the first about 1 of the forward feed adjustment dial 35 is provided. The rotation range for the rotation can be restricted, and inadvertent entry into the rotation range for the next one rotation can be forcibly prevented.

また、回動規制ピン53による正送り調節ダイヤル35の回動規制を解除可能な規制解除部材51を設けたので、必要に応じて回動規制ピン53による回動規制を、規制解除板51aを後方へ解除操作するだけで解除できるので、正送り調節ダイヤル35の次の1回転分の回動範囲への切換えが容易になる。   In addition, since the restriction release member 51 capable of releasing the rotation restriction of the forward feed adjustment dial 35 by the rotation restriction pin 53 is provided, the rotation restriction by the rotation restriction pin 53 is performed on the restriction release plate 51a as necessary. Since it can be released simply by performing a release operation backward, it is easy to switch the forward feed adjustment dial 35 to the rotation range for the next one rotation.

また、回動規制ピン53は機枠F内において進退可能に且つその鋭角状先端部53aが正送り調節ダイヤル35の係合部35dに当接可能に圧縮コイルバネ54により弾性付勢され、規制解除部材51は回動規制ピン53に係合する規制解除板51aとこの規制解除板51aを介して回動規制部材51を係合部35dとの係合を解除可能に解除操作する解除操作部51bとを有するので、弾性付勢された回動規制部材51を、その付勢方向と反対方向に解除操作部を解除操作するだけで、回動規制部材51と正送り調節ダイヤル35の係合部35dとの係合を容易に解除することができる。   Further, the rotation restricting pin 53 is elastically biased by the compression coil spring 54 so that it can advance and retreat in the machine frame F, and its acute-angled tip 53a can abut on the engaging portion 35d of the forward feed adjusting dial 35, and the restriction is released. The member 51 includes a restriction release plate 51a that engages with the rotation restriction pin 53, and a release operation portion 51b that releases the engagement of the rotation restriction member 51 with the engagement portion 35d via the restriction release plate 51a. Therefore, the engagement portion between the rotation restricting member 51 and the forward feed adjusting dial 35 can be obtained by simply releasing the release restricting portion of the elastically biased rotation restricting member 51 in the direction opposite to the biasing direction. The engagement with 35d can be easily released.

しかも、回動規制部材51を機枠F内に設けることで、これら回動規制部材51や規制解除ピン53を設けた回動規制機構50の小型化や操作性の向上を図ることができる。   Moreover, by providing the rotation restricting member 51 in the machine frame F, the rotation restricting mechanism 50 provided with the turn restricting member 51 and the restriction releasing pin 53 can be reduced in size and operability can be improved.

また、解除操作部51bを規制解除板51aに一体形成したので、部品点数を減少させることで、回動規制ピン53や規制解除部材51を設けた回動規制機構50の小型化だけでなく、組付け性の向上や低コスト化を図ることができる。   Further, since the release operation portion 51b is integrally formed with the restriction release plate 51a, not only the rotation restriction mechanism 50 provided with the rotation restriction pin 53 and the restriction release member 51 can be reduced in size by reducing the number of parts. Assemblability can be improved and costs can be reduced.

また、正送り調節ダイヤル35の白い表示面35eに、その外周側において最初の1回転分の布送り目盛り「0〜2.5 」を記載するとともに、その内周側において次の1回転分の布送り目盛り「2.5 〜5」を記載したので、正送り調節ダイヤル35の夫々の回動範囲における布送り量が、目盛りを介して容易に分かる。   In addition, on the white display surface 35e of the forward feed adjusting dial 35, the cloth feed scale “0 to 2.5” for the first rotation is written on the outer peripheral side, and the cloth feed for the next one rotation is printed on the inner peripheral side. Since the scale “2.5 to 5” is described, the cloth feed amount in each rotation range of the forward feed adjustment dial 35 can be easily understood through the scale.

更に、1回転分の布送り目盛りと次の1回転分の布送り目盛りの表示形態を、黒数字と白抜き数字とで異ならせたので、その表示形態を介して、1回転分の布送り目盛りと、次の1回転分の布送り目盛りとを間違いなく正確に認識することができる。   Furthermore, since the display form of the cloth feed scale for one rotation and the next one turn of the cloth feed scale are different between black numbers and white numbers, the cloth feed for one rotation is displayed through the display form. It is possible to accurately recognize the scale and the cloth feed scale for the next one rotation.

次に、前記実施例を部分的に変更した変更形態について説明する。
1〕図12に示すように、回動規制機構50を部分的に変更した回動規制機構50Aを設け、解除操作ボタン73aを操作して回動規制ピン71を後退させるようにして、回動規制ピン71による回動規制を解除するようにしてもよい。
Next, a modified embodiment in which the above embodiment is partially modified will be described.
1] As shown in FIG. 12, a rotation restriction mechanism 50A in which the rotation restriction mechanism 50 is partially changed is provided, and the rotation restriction pin 71 is moved backward by operating the release operation button 73a. You may make it cancel | release the rotation control by the control pin 71. FIG.

即ち、機枠Fに前後方向向きの左右1対のピン穴Ff,Fgと、平面視にて略矩形状の凹部Fhが形成されており、その凹部Fhとピン穴Ff,Fgは前端において覆うようにカバー板70で塞がれ、そのカバー板70は複数のビス(図示略)で機枠Fに固着されている。カバー板70には、1対の挿通穴70a,70bが夫々形成されている。   That is, a pair of left and right pin holes Ff and Fg facing in the front-rear direction and a substantially rectangular recess Fh in plan view are formed in the machine frame F, and the recess Fh and the pin holes Ff and Fg are covered at the front end. Thus, the cover plate 70 is closed, and the cover plate 70 is fixed to the machine frame F with a plurality of screws (not shown). The cover plate 70 is formed with a pair of insertion holes 70a and 70b.

右側のピン穴Fgに、回動規制ピン71(回動規制部材に相当する)とこれを弾性付勢する圧縮コイルバネ72とがピン穴Fgに嵌め込まれ、回動規制ピン71はピン穴Fgと右側の挿通穴70bとを介して前後に摺動可能に支持されている。凹部Fhの内部に前後方向向きに配設された規制解除軸73は、その後端部において左側のピン穴Ffへの嵌入により支持されるとともに、その前端部の解除操作ボタン73a(これが解除操作部に相当する)が左側の挿通穴70aに挿通することで、前後に摺動可能に支持されている。   A rotation restriction pin 71 (corresponding to a rotation restriction member) and a compression coil spring 72 that elastically urges the rotation restriction pin 71 are fitted into the pin hole Fg, and the rotation restriction pin 71 is connected to the pin hole Fg. It is slidably supported back and forth via the right insertion hole 70b. The restriction release shaft 73 disposed in the front-rear direction inside the recess Fh is supported by fitting into the left pin hole Ff at the rear end portion thereof, and a release operation button 73a (this is a release operation portion) at the front end portion thereof. Is supported through the left insertion hole 70a so as to be slidable back and forth.

カバー板70の左端部の高さ方向中段部において、後方に延びる水平な枢支壁70cが一体形成され、その枢支壁70cに、揺動レバー74(これが係合部材に相当する)の左端部がビス75で水平揺動可能に枢支されている。揺動レバー74は、その基端部よりの部位において規制解除軸73に水平状に形成された断面略矩形状の貫通穴(図示略)を貫通し、その右端部において回動規制ピン71に形成された係合穴(図示略)に係合している。   A horizontal pivot wall 70c extending rearward is integrally formed in the middle step in the height direction of the left end portion of the cover plate 70, and the left end of the swing lever 74 (which corresponds to an engaging member) is formed on the pivot wall 70c. The part is pivotally supported by a screw 75 so as to be horizontally swingable. The swing lever 74 passes through a through-hole (not shown) having a substantially rectangular cross section formed horizontally on the restriction release shaft 73 at a portion from the base end portion thereof, and is provided on the rotation restriction pin 71 at the right end portion thereof. It engages with the formed engagement hole (not shown).

ところで、揺動レバー74は、規制解除軸73の貫通部位においてビス76で規制解除軸73に連結され、規制解除軸73の前後方向への移動に同期して前後に揺動し、これと同時に回動規制ピン71も前後方向に移動させる。ここで、規制解除部材77は、揺動レバー74と、規制解除軸73の解除操作ボタン73a等から構成されている。   By the way, the swing lever 74 is connected to the restriction release shaft 73 by a screw 76 at a portion where the restriction release shaft 73 penetrates, and swings back and forth in synchronization with the movement of the restriction release shaft 73 in the front-rear direction. The rotation restricting pin 71 is also moved in the front-rear direction. Here, the restriction release member 77 includes a swing lever 74, a release operation button 73a of the restriction release shaft 73, and the like.

回動規制ピン71の先端部分71aは、前記実施例と同様に鋭角状に形成され、正送り調節ダイヤル35に形成された環状壁部35cの多数の点状凹部の何れかに押圧状に係合することで、正送り調節ダイヤル35を手動操作された操作位置に保持可能である。   The distal end portion 71a of the rotation restricting pin 71 is formed in an acute angle shape as in the above-described embodiment, and is engaged with any of a number of point-like concave portions of the annular wall portion 35c formed in the forward feed adjusting dial 35. By combining, the forward feed adjustment dial 35 can be held at the manually operated operating position.

回動規制機構50Aはこのように構成されているので、正送り調節ダイヤル35を最初の約1回転分回動させたとき、係合部35dが回動規制ピン71の先端部71aに当接して正送り調節ダイヤル35の回動が規制される。それ故、正の布送り量を「0〜約2.5 mm」の範囲内で微調節することができ、不用意に、大きな正の布送り量が設定されないように制限されている。   Since the rotation restricting mechanism 50A is configured in this way, when the forward feed adjusting dial 35 is rotated by about the first rotation, the engaging portion 35d comes into contact with the tip portion 71a of the rotation restricting pin 71. Thus, the rotation of the forward feed adjustment dial 35 is restricted. Therefore, the positive cloth feed amount can be finely adjusted within the range of “0 to about 2.5 mm”, and it is restricted that a large positive cloth feed amount is not set carelessly.

一方、3〜4mmの大きな正布送り量を必要とする場合には、図12に2点鎖線で示すように、作業者が指で解除操作ボタン73aを後方に押し込んで解除操作する。この場合、解除操作ボタン73aが正送り調節ダイヤル35よりも左側に大きく離れているので、解除操作ボタン73aの解除操作がし易くなっている。その結果、揺動レバー74が後方に揺動し、同時に回動規制ピン71も後方に退避するので、回動規制ピン71の先端部71aが係合部35dに干渉しなくなり、正送り調節ダイヤル35を更に次の1回転分の反時計回り方向への回動操作が可能になる。   On the other hand, when a large cloth feed amount of 3 to 4 mm is required, as shown by a two-dot chain line in FIG. 12, the operator pushes the release operation button 73a backward with a finger to perform the release operation. In this case, since the release operation button 73a is far away from the forward feed adjustment dial 35 on the left side, the release operation button 73a can be easily released. As a result, the swing lever 74 swings backward, and at the same time, the rotation restricting pin 71 is also retracted backward, so that the front end 71a of the turn restricting pin 71 does not interfere with the engaging portion 35d, and the forward feed adjusting dial. 35 can be further rotated counterclockwise for one rotation.

2〕図13に示すように、正送り調節器36を部分的に変更した正送り調節器36Aを設け、正送り調節器36Aのカム部36aを、正送り調節ダイヤル35の1回転分に対応する長さL3に形成し、更に、そのカム部36aに、正送り調節ダイヤル35の1回転のうちの約240°に対応する長さの第1送り調節カム面36eと、正送り調節ダイヤル35の1回転のうちの約120°に対応する長さの第2送り調節カム面36fとを形成するようにしてもよい。但し、正送り調節ダイヤル35の軸部材35aと直交する面Sに対する、第2送り調節カム面36fの傾斜角βは第1送り調節カム面36eの傾斜角αよりも小さい。   2] As shown in FIG. 13, a forward feed adjuster 36A in which the forward feed adjuster 36 is partially changed is provided, and the cam portion 36a of the forward feed adjuster 36A corresponds to one rotation of the forward feed adjustment dial 35. Further, the cam portion 36a includes a first feed adjustment cam surface 36e having a length corresponding to about 240 ° of one rotation of the forward feed adjustment dial 35, and a forward feed adjustment dial 35. A second feed adjustment cam surface 36f having a length corresponding to about 120 ° of one rotation of the second rotation may be formed. However, the inclination angle β of the second feed adjustment cam surface 36f with respect to the surface S orthogonal to the shaft member 35a of the forward feed adjustment dial 35 is smaller than the inclination angle α of the first feed adjustment cam surface 36e.

この場合には、正送り調節ダイヤル35を1回転させる間に、第1送り調節カム面36eにより小さな布送り量「0〜約2.5 mm」を発生させることができ、更に、これに続く第2送り調節カム面36fにより大きな布送り量「約2.5 〜5mm」を連続的に発生させることができるので、1台の千鳥縫いミシンMによる布送り量において、融通性や適応性を格段に向上させることができる。   In this case, a small cloth feed amount “0 to about 2.5 mm” can be generated by the first feed adjustment cam surface 36e while the forward feed adjustment dial 35 is rotated once, and further, the second feed adjustment dial 35 following this. Since the large cloth feed amount “about 2.5 to 5 mm” can be continuously generated by the feed adjusting cam surface 36f, the flexibility and adaptability are remarkably improved in the cloth feed amount by one staggered sewing machine M. be able to.

3〕第1送り調節カム面36b,36eと第2送り調節カム面36c,36fの各々を平面以外の、例えば湾曲状に形成することも可能である。また、第1送り調節カム面36b,36eと第2送り調節カム面36c,36fを連続的に滑らかに形成するようにしてもよい。   3] Each of the first feed adjusting cam surfaces 36b and 36e and the second feed adjusting cam surfaces 36c and 36f can be formed in a curved shape other than a plane, for example. Further, the first feed adjusting cam surfaces 36b and 36e and the second feed adjusting cam surfaces 36c and 36f may be formed continuously and smoothly.

4〕正送り調節器36のカム部36aに、夫々が正送り調節ダイヤル35の1回転分に対応する長さに形成された第1〜第3送り調節カム面を連続させて形成することで、千鳥縫いミシンMにおける布送りの調節量を大幅に拡大することが可能になる。   4] The cam portion 36a of the forward feed adjuster 36 is formed by continuously forming first to third feed adjustment cam surfaces each having a length corresponding to one rotation of the forward feed adjustment dial 35. Therefore, it is possible to greatly increase the adjustment amount of the cloth feed in the staggered sewing machine M.

5〕本発明は以上説明した実施例に限定されるものではなく、当業者であれば、本発明の趣旨を逸脱しない範囲で、前記実施例に種々の変更を付加して実施することができ、本発明はそれらの変更形態をも包含するものである。   5] The present invention is not limited to the embodiments described above, and those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention. The present invention includes those modifications.

本発明の実施例に係る千鳥縫いミシンの正面図である。1 is a front view of a staggered sewing machine according to an embodiment of the present invention. 千鳥縫いミシンに設けた送り歯駆動機構と送り調節機構の斜視図である。It is a perspective view of a feed dog drive mechanism and a feed adjustment mechanism provided in a staggered sewing machine. 送り歯駆動機構と送り調節機構の底面の斜視図である。It is a perspective view of the bottom face of a feed dog drive mechanism and a feed adjustment mechanism. 千鳥縫いミシンの脚柱部の部分拡大正面図である。It is the elements on larger scale of the pedestal part of a staggered sewing machine. 布送り量が零のときの正送り調節ダイヤルの正面図である。It is a front view of the forward feed adjustment dial when the cloth feed amount is zero. 布送り量が零のときの正送り調節機構の要部縦断側面図である。It is a principal part vertical side view of the forward feed adjustment mechanism when the cloth feed amount is zero. 正送り調節機構と回動規制機構の要部横断平面図である。It is a principal part cross-sectional top view of a forward feed adjustment mechanism and a rotation control mechanism. 正送り調節器の側面図である。It is a side view of a forward feed adjuster. 布送り量が小さいときの正送り調節機構の要部縦断側面図である。It is a principal part vertical side view of the forward feed adjustment mechanism when the cloth feed amount is small. 布送り量が小さいときの正送り調節ダイヤルの正面図である。It is a front view of the forward feed adjustment dial when the cloth feed amount is small. 規制解除ピンの規制を解除する図6相当図である。FIG. 7 is a view corresponding to FIG. 6 for releasing the restriction of the restriction release pin. 布送り量が大きいときの正送り調節機構の要部縦断側面図である。It is a principal part vertical side view of the forward feed adjustment mechanism when the cloth feed amount is large. 布送り量が大きいときの正送り調節ダイヤルの正面図である。It is a front view of the forward feed adjustment dial when the cloth feed amount is large. 正送り調節ダイヤルの目盛りと正布送り量との関係を示す線図である。It is a diagram which shows the relationship between the scale of a positive feed adjustment dial, and the right cloth feed amount. 変更形態に係る図9相当図である。FIG. 10 is a diagram corresponding to FIG. 9 according to a modified embodiment. 変更形態に係る図7相当図である。FIG. 8 is a diagram corresponding to FIG. 7 according to a modified embodiment.

符号の説明Explanation of symbols

M 千鳥縫いミシン
20 送り切換え器
31 正送り調節機構
35 正送り調節ダイヤル
35a 軸部材
36 正送り調節器
36a カム部
36b 第1送り調節カム面
36c 第2送り調節カム面
36e 第1送り調節カム面
36f 第2送り調節カム面
50 回動規制機構
50A 回動規制機構
51 規制解除部材
51a 規制解除板
51b 解除操作部
53 回動規制ピン
71 回動規制ピン
73a 解除操作ボタン
74 揺動レバー
77 規制解除部材
M Staggered sewing machine 20 Feed changer 31 Forward feed adjustment mechanism 35 Forward feed adjustment dial 35a Shaft member 36 Forward feed adjuster 36a Cam portion 36b First feed adjustment cam surface 36c Second feed adjustment cam surface 36e First feed adjustment cam surface 36f Second feed adjusting cam surface 50 Rotation restricting mechanism 50A Rotation restricting mechanism 51 Restriction release member 51a Restriction release plate 51b Release operation part 53 Rotation restriction pin 71 Rotation restriction pin 73a Release operation button 74 Swing lever 77 Restriction release Element

Claims (9)

ミシンの機枠に設けられた送り調節ダイヤルと、この送り調節ダイヤルの調節量に応じて回動角度が調節される送り調節器と、その送り調節器の回動角度に応じて送り歯による布送り量を発生させる送り切換え器とを備えたミシンの送り調節機構において、
前記送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、
前記送り調節器は前記送り調節ダイヤルの軸部材が当接するカム部を有し、
前記カム部に、前記送り調節ダイヤルの最初の1回転分に対応する長さに形成された第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって前記送り調節ダイヤルの次の1回転分に対応する長さに形成された第2の送り調節カム面とを形成したことを特徴とするミシンの送り調節機構。
A feed adjustment dial provided on the machine frame of the sewing machine, a feed adjuster whose rotation angle is adjusted according to the adjustment amount of the feed adjustment dial, and a cloth formed by a feed dog according to the rotation angle of the feed adjustment dial In a sewing machine feed adjustment mechanism equipped with a feed switching device for generating a feed amount,
The feed adjustment dial has a shaft member that moves forward and backward by its turning operation,
The feed adjuster has a cam portion with which the shaft member of the feed adjustment dial abuts,
A first feed adjustment cam surface formed on the cam portion to a length corresponding to the first rotation of the feed adjustment dial, and a second feed adjustment cam continuous with the first feed adjustment cam surface And a second feed adjusting cam surface formed to have a length corresponding to the next rotation of the feed adjusting dial.
前記送り調節ダイヤルの軸部材と直交する面に対する、前記第1の送り調節カム面の傾斜角よりも前記第2の送り調節カム面の傾斜角の方が小さくなるように変更されたことを特徴とする請求項1に記載のミシンの送り調節機構。   The tilt angle of the second feed adjusting cam surface is changed to be smaller than the tilt angle of the first feed adjusting cam surface with respect to the surface orthogonal to the shaft member of the feed adjusting dial. The sewing machine feed adjustment mechanism according to claim 1. 前記送り調節ダイヤルが最初の約1回転分回動した位置で前記送り調節ダイヤルの回動を規制する回動規制部材を設けたことを特徴とする請求項1又は2に記載のミシンの送り調節機構。   The feed adjustment of a sewing machine according to claim 1 or 2, further comprising a rotation restricting member for restricting the rotation of the feed adjustment dial at a position where the feed adjustment dial is rotated about the first rotation. mechanism. 前記回動規制部材による前記送り調節ダイヤルの回動規制を解除可能な規制解除部材を設けたことを特徴とする請求項3に記載のミシンの送り調節機構。   4. The sewing machine feed adjustment mechanism according to claim 3, further comprising a restriction release member capable of releasing the rotation restriction of the feed adjustment dial by the rotation restriction member. 前記回動規制部材は前記機枠内において進退可能に且つその先端部が送り調節ダイヤルの係合部に当接可能に付勢手段により弾性付勢され、前記規制解除部材は回動規制部材に係合する係合部材とこの係合部材を介して回動規制部材を前記係合部との係合を解除可能に解除操作する解除操作部とを有することを特徴とする請求項4に記載のミシンの送り調節機構。   The rotation restricting member is elastically urged by an urging means such that the rotation restricting member can advance and retreat in the machine frame and a tip end portion thereof can abut on an engaging portion of a feed adjusting dial, and the restriction releasing member is a rotation restricting member. 5. The apparatus according to claim 4, further comprising an engaging member that engages and a release operation unit that performs a release operation so that the engagement of the rotation restricting member with the engaging unit can be released via the engaging member. Sewing machine feed adjustment mechanism. 前記解除操作部を係合部材に一体形成したことを特徴とする請求項5に記載のミシンの送り調節機構。   6. The sewing machine feed adjustment mechanism according to claim 5, wherein the release operation portion is formed integrally with the engaging member. 前記送り調節ダイヤルの表示面に、最初の1回転分の布送り目盛りと次の1回転分の布送り目盛りとを並記したことを特徴とする請求項1〜6の何れかに記載のミシンの送り調節機構。   The sewing machine according to any one of claims 1 to 6, wherein a cloth feed scale for the first rotation and a cloth feed scale for the next rotation are written side by side on the display surface of the feed adjustment dial. Feed adjustment mechanism. 前記1回転分の布送り目盛りと前記次の1回転分の布送り目盛りの表示形態を異ならせたことを特徴とする請求項7に記載のミシンの送り調節機構。   8. The sewing machine feed adjusting mechanism according to claim 7, wherein a display form of the cloth feed scale for one rotation and the cloth feed scale for the next one rotation are made different. ミシンの機枠に設けられた送り調節ダイヤルと、この送り調節ダイヤルの調節量に応じて回動角度が調節される送り調節器と、その送り調節器の回動角度に応じて送り歯による布送り量を発生させる送り切換え器とを備えたミシンの送り調節機構において、
前記送り調節ダイヤルはその回動操作により進退移動する軸部材を有し、
前記送り調節器は前記送り調節ダイヤルの軸部材が当接するカム部であって前記送り調節ダイヤルの1回転分に対応する長さに形成されたカム部を有し、
前記カム部に、第1の送り調節カム面と、その第1の送り調節カム面に連続する第2の送り調節カム面であって前記第1の送り調節カム面の傾斜角よりも小さい傾斜角を有する第2の送り調節カム面とを形成したことを特徴とするミシンの送り調節機構。
A feed adjustment dial provided on the machine frame of the sewing machine, a feed adjuster whose rotation angle is adjusted according to the adjustment amount of the feed adjustment dial, and a cloth formed by a feed dog according to the rotation angle of the feed adjustment dial In a sewing machine feed adjustment mechanism equipped with a feed switching device for generating a feed amount,
The feed adjustment dial has a shaft member that moves forward and backward by its turning operation,
The feed adjuster has a cam portion that is in contact with a shaft member of the feed adjustment dial and is formed to have a length corresponding to one rotation of the feed adjustment dial;
The cam portion includes a first feed adjusting cam surface and a second feed adjusting cam surface continuous to the first feed adjusting cam surface, the tilt being smaller than an inclination angle of the first feed adjusting cam surface. A feed adjusting mechanism for a sewing machine, characterized in that a second feed adjusting cam surface having a corner is formed.
JP2004375500A 2004-12-27 2004-12-27 Adjusting mechanism for feeding of sewing machine Pending JP2006180977A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004375500A JP2006180977A (en) 2004-12-27 2004-12-27 Adjusting mechanism for feeding of sewing machine
CN 200510138147 CN1796633B (en) 2004-12-27 2005-12-27 Feeding regulating device of sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004375500A JP2006180977A (en) 2004-12-27 2004-12-27 Adjusting mechanism for feeding of sewing machine

Publications (1)

Publication Number Publication Date
JP2006180977A true JP2006180977A (en) 2006-07-13

Family

ID=36734501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004375500A Pending JP2006180977A (en) 2004-12-27 2004-12-27 Adjusting mechanism for feeding of sewing machine

Country Status (2)

Country Link
JP (1) JP2006180977A (en)
CN (1) CN1796633B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009240389A (en) * 2008-03-28 2009-10-22 Juki Corp Sewing machine
JP2010246839A (en) * 2009-04-20 2010-11-04 Juki Corp Sewing machine
JP2014195607A (en) * 2013-03-29 2014-10-16 ブラザー工業株式会社 Sewing machine
CN108532135B (en) * 2018-05-28 2023-11-24 池州市旭豪机械有限公司 Feeding wheel adjusting mechanism of sewing machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1118271A (en) * 1912-12-12 1914-11-24 Singer Mfg Co Feed-regulator for sewing-machines.
JPH0642619Y2 (en) * 1988-08-01 1994-11-09 シンガー日鋼株式会社 Sewing machine feed amount adjusting device
KR100665395B1 (en) * 1999-11-22 2007-01-04 쥬키 가부시키가이샤 Device for adjusting feed amount of clothing in sewing machine
JP4020692B2 (en) * 2002-05-08 2007-12-12 三菱電機株式会社 Needle feed sewing machine
CN2584626Y (en) * 2002-09-18 2003-11-05 上海宝狮缝纫机有限公司 Device for adjusting length of stitch for forward-backward feeding mechanism of sewing machine
JP4177162B2 (en) * 2003-05-02 2008-11-05 Juki株式会社 Sewing machine feeder

Also Published As

Publication number Publication date
CN1796633B (en) 2011-10-05
CN1796633A (en) 2006-07-05

Similar Documents

Publication Publication Date Title
US7367274B2 (en) Darning width adjusting device for sewing machine
JP2007307275A (en) Upper feed device for sewing machine
JP2008011915A (en) Sewing machine
JP2006238905A (en) Sewing machine and feed adjusting mechanism of sewing machine
JP4492385B2 (en) Eyelet hole sewing machine
JP2006180977A (en) Adjusting mechanism for feeding of sewing machine
WO2019131040A1 (en) Embroidery frame transfer device and sewing machine
US9797078B2 (en) Sewing machine
JP3779912B2 (en) Buttonhole sewing machine
TW593824B (en) Presser foot of sewing machine
JPH1099571A (en) Feed gear of cycle sewing machine
JP2008194134A (en) Sewing machine
JP4702606B2 (en) Hole throat plate throat plate height adjustment mechanism
JP2001321589A (en) Thread cutter for eyelet stitching sewing machine
JP4747742B2 (en) Sewing machine needle bar drive device and sewing machine
JP2013202146A (en) Sewing machine
US9464372B2 (en) Sewing machine
JP2008132006A (en) Sewing machine
JP2006263170A (en) Embroidery presser for embroidery sewing machine
JP2005000401A (en) Darning width adjustment device for sewing machine
JP2010094350A (en) Sewing machine
JP2624510B2 (en) Overlock sewing machine
JP2007075253A (en) Single needle switching device
JPS6060888A (en) Edge stitching sewing machine
JP2013202145A (en) Sewing machine