JP2593469Y2 - Sewing machine balance - Google Patents
Sewing machine balanceInfo
- Publication number
- JP2593469Y2 JP2593469Y2 JP1992046169U JP4616992U JP2593469Y2 JP 2593469 Y2 JP2593469 Y2 JP 2593469Y2 JP 1992046169 U JP1992046169 U JP 1992046169U JP 4616992 U JP4616992 U JP 4616992U JP 2593469 Y2 JP2593469 Y2 JP 2593469Y2
- Authority
- JP
- Japan
- Prior art keywords
- thread
- cam
- rotary
- sewing thread
- balance
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、ミシンの回転天秤に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary balance for a sewing machine.
【０００２】[0002]
【従来の技術】従来のこの種の回転天秤として、図２の
Ａに見られるように、軸受１に支持された回転軸２の一
端に、固定部３をもち外周をカム形状とした板状の回転
カム４と、その回転カムの両側面にそれぞれ対向する糸
案内溝５ａ、５ｂを設け固定配置した糸案内６とを備
え、その糸案内溝５ａ、５ｂに対して縫い糸７を回転カ
ム４の外周を横切るように通し、回転カム４を矢印方向
に回転することによって、回転カム４の外周により縫糸
を糸案内溝５ａ、５ｂに沿い上下動させて糸道経路を屈
曲させ、縫糸の取上げと繰り出しを行う構成の回転天秤
が知られている。2. Description of the Related Art As shown in FIG. 2A, a conventional rotary balance of this type has a plate-like shape having a fixed portion 3 at one end of a rotary shaft 2 supported by a bearing 1 and having a cam-shaped outer periphery. And a thread guide 6 fixedly disposed by providing opposed thread guide grooves 5a and 5b on both side surfaces of the rotary cam, and sewing the sewing thread 7 to the thread guide grooves 5a and 5b. , The sewing thread is moved up and down along the thread guide grooves 5a and 5b by the outer circumference of the rotating cam 4 to bend the thread path, thereby picking up the sewing thread. A rotary balance having a configuration for feeding out is known.
【０００３】[0003]
【考案が解決しようとする課題】しかしながら、この種
の回転天秤においては、特に回転カム４外周付近の縫糸
７にたるみが生じたりしていると、回転カム４外周との
摩擦や回転カム４に付着している油との粘着力により、
回転カムの回転時に縫糸７が回転カム４に巻きつき、多
量の縫糸が無駄となったり、その巻きついた糸を取り外
すために長時間の余分な作業が必要となる等の問題があ
った。However, in this type of rotary balance, when the sewing thread 7 around the outer periphery of the rotary cam 4 is slackened, friction with the outer periphery of the rotary cam 4 and the rotation of the rotary cam 4 are increased. Due to the adhesive force with the adhering oil,
When the rotating cam is rotated, the sewing thread 7 is wound around the rotating cam 4, so that a large amount of sewing thread is wasted, and there is a problem that extra time is required for removing the wound thread.
【０００４】[0004]
【問題を解決するための手段】上記問題点を解決するた
めに、本考案においては、外周をカム形状とした板状の
回転カムと、その回転カムの両側面にそれぞれ対向する
糸案内溝を設け固定配置した糸案内とを備え、縫糸が前
記回転カムにその外周を横切った状態で接触するように
前記糸案内溝に案内される回転天秤において、上記糸案
内溝よりも回転カムの回転方向側に配設し前記縫糸と接
触する巻き付き防止部材を設け、前記巻き付き防止部材
が前記縫糸と回転カムとの接触抵抗より大なる力で縫糸
と接触し、縫糸の回転カムへの巻き付きを防止する構成
とした。In order to solve the above problems In order to solve the problem] In the present invention, a plate-shaped rotary cam and a cam shape periphery, the thread guide groove for each face on both sides of the rotary cam Provided with a fixedly arranged thread guide, with the sewing thread
Contact the rotating cam with the outer circumference of the rotating cam.
In the rotary balance guided by the thread guide groove, the rotary balance is disposed on the rotation direction side of the rotary cam with respect to the thread guide groove, and is in contact with the sewing thread.
A touching anti-winding member , wherein the anti-winding member
Is a thread with a force greater than the contact resistance between the thread and the rotating cam.
Contact with, and configured to prevent the winding of the thread of the rotary cam.
【０００５】[0005]
【作用】回転カムが回転し縫糸が回転カムとの摩擦等に
より巻き付こうとしても、その縫糸はブラシ等の巻き付
き防止部材によって縫糸が保持され巻き付きが防止さ
れ、縫糸が回転カムに巻きつくことがない。[Function] Even if the rotating cam rotates and the sewing thread tries to wind around due to friction with the rotating cam, the sewing thread is held by the winding prevention member such as a brush and the winding is prevented, and the sewing thread is wound around the rotating cam. There is no.
【０００６】[0006]
【実施例】以下この考案の実施例を図面により説明す
る。なお、従来技術として説明した図２のＡに示す回転
天秤機構については、説明を省略する。１０は環縫いミ
シンであり、ベッド１１とアーム１２とから構成されて
いる。１３はアーム１２の前面において回転天秤機構を
図１のように覆う天秤カバーでありアーム１２に対して
着脱できるようになっている。この天秤カバー１３に
は、回転天秤の糸案内６の糸案内溝５ａ、５ｂに縫糸７
が必然的に入るように、縫糸を案内するための案内カバ
ー１４が一体に形成されており、またこの案内カバー１
４の下方内面には、巻き付き防止部材としてのブラシ材
１５ａが固着されている。１６は天秤カバー１３に着脱
できるようにした補助カバーであり、この補助カバー１
６を天秤カバー１３に取り付けつけることによって、天
秤カバー１３の開口部１３ａを塞ぐと共に、案内カバー
１４の周面との間に、縫糸７の挿入溝１７が形成され
る。１５ｂは補助カバー１６の下方内側端面に固着した
巻き付き防止部材としてのブラシ材である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Note that the description of the rotary balance mechanism shown in FIG. Reference numeral 10 denotes a chain stitch sewing machine, which includes a bed 11 and an arm 12. Reference numeral 13 denotes a balance cover which covers the rotary balance mechanism on the front surface of the arm 12 as shown in FIG. This balance cover 13 has thread guide grooves 5a and 5b of a thread guide 6 of the rotary balance, and sewing thread 7
Is integrally formed with a guide cover 14 for guiding the sewing thread.
A brush material 15a as an anti-winding member is fixed to the lower inner surface of 4. Reference numeral 16 denotes an auxiliary cover which can be attached to and detached from the balance cover 13.
By attaching 6 to the balance cover 13, the opening 13 a of the balance cover 13 is closed, and an insertion groove 17 for the sewing thread 7 is formed between the guide cover 14 and the peripheral surface of the guide cover 14. Reference numeral 15b denotes a brush material as a winding prevention member fixed to the lower inner end surface of the auxiliary cover 16.
【０００７】１８は固定部カバーであり、基部を軸受１
に固定することによって、その上端の円弧部１８ａが、
回転カム４の固定部３前方周囲を覆い、ゆるんだ縫糸７
が固定部３の外周に巻きつくのを防止している。そし
て、図２に示す補助カバー１６を天秤カバー１３に取付
けた後に、天秤カバー１３をアーム１２に取付けたと
き、巻き付き防止部材としてのブラシ部材１５ａ、１５
ｂは図３に示すように、ブラシ部材１５ａは、糸案内６
よりも回転カム４の回転方向側に配設され、回転カム４
の偏心が大きい部分の外周面に接触し、ブラシ部材１５
ｂは、一部が糸案内６側面の糸案内溝５ｂ下端部に接触
し、他の部分が糸案内６よりも回転カム４の回転方向側
の側端面に接触している。Reference numeral 18 denotes a fixed part cover, the base of which is the bearing 1
, The circular arc portion 18a at the upper end
Loose sewing thread 7 covering the front periphery of fixed portion 3 of rotating cam 4
Is prevented from winding around the outer periphery of the fixed portion 3. Then, after attaching the auxiliary cover 16 shown in FIG. 2 to balance the cover 13, when fitted with a balance cover 13 to the arm 12, the brush member 15a of the winding prevention member, 15
b, as shown in FIG. 3, the brush member 15a
The rotation cam 4 is disposed on the rotation direction side of the rotation cam 4.
Contact the outer peripheral surface of the portion where the eccentricity of the
Part b contacts the lower end of the thread guide groove 5b on the side surface of the thread guide 6, and the other part contacts the side end face on the rotation direction side of the rotary cam 4 relative to the thread guide 6.
【０００８】つぎにこの考案の作用を説明する。図１の
状態から、回転天秤機構に縫糸を通すには、縫糸を両手
の指先で持ち、縫糸の中央部を案内カバー１６の上端に
かけて、両手の指先を下方に引きおろす。これにより縫
糸は案内カバー１４の先端と案内溝１７とによって、糸
案内６の糸案内溝５ａ、５ｂに導入されて、糸案内溝５
ａ、５ｂの間の縫糸は回転カム４の外周を横切った状態
で接触する。Next, the operation of the present invention will be described. In order to pass the thread through the rotary balance mechanism from the state shown in FIG. 1, the thread is held with the fingertips of both hands, the center of the thread is put on the upper end of the guide cover 16, and the fingertips of both hands are pulled down. Thereby, the sewing thread is introduced into the thread guide grooves 5a and 5b of the thread guide 6 by the tip of the guide cover 14 and the guide groove 17, and the thread guide groove 5
The sewing thread between a and 5b contacts the outer periphery of the rotary cam 4 in a state of traversing.
【０００９】この状態で回転カム４が回転すると、縫糸
は回転カム４の外周形状に従って、糸案内溝５ａ、５ｂ
に沿い上下に移動して、糸道経路を屈曲させ、縫糸の取
り上げや供給源からの繰り出しを行う。この動作中に縫
糸にたるみが生じたりして、回転カム４との摩擦抵抗や
回転カムに付着した油の粘性によって、縫糸が回転カム
４にからみ、巻きつこうとするが、回転カム４に対し図
３のように配置し接触する巻き付き防止部材としてのブ
ラシ材１５ａ、１５ｂによって縫糸が保持され巻き付き
が防止される。When the rotary cam 4 rotates in this state, the sewing thread follows the outer peripheral shape of the rotary cam 4 to form thread guide grooves 5a, 5b.
Along the path to bend the thread path to pick up the thread and to feed it out of the supply source. During this operation, the sewing thread is slackened, and the sewing thread is entangled with the rotating cam 4 due to frictional resistance with the rotating cam 4 and the viscosity of the oil attached to the rotating cam 4 and tries to wind the sewing thread. On the other hand, the sewing thread is held by the brush members 15a and 15b as winding prevention members which are arranged and come into contact with each other as shown in FIG. 3, thereby preventing winding.
【００１０】なお、図示実施例においては、巻き付き防
止材として、ブラシ材１５ａ、１５ｂを示したが、他の
部材としてスポンジ材等でも良く、またこの巻き付き防
止部材は、１５ａ又は１５ｂのいずれか一つでも良い。[0010] In the illustrated embodiment, as an anti-material wrapping, although the brush member 1 5a, 1 5b, may be a sponge material such as another member, and this winding preventing member, 1 5a or 1 5b Either one may be used.
【００１１】[0011]
【考案の効果】以上のようにこの考案は、外周をカム形
状とした板状の回転カム４と、その回転カム４の両側面
にそれぞれ対向する糸案内溝５ａ、５ｂを設け固定配置
した糸案内６とを備え、縫糸が前記回転カム４にその外
周を横切った状態で接触するように前記糸案内溝５ａ、
５ｂに案内される回転天秤Ａにおいて、上記糸案内溝５
ａ、５ｂよりも回転カム４の回転方向側に配設し、縫糸
と回転カム４との接触抵抗より大なる力で縫糸と接触す
る巻き付き防止部材１５ａ、１５ｂを設けたので、回転
天秤に縫糸が巻きつくことがなく、多量の縫糸が天秤に
巻きついて無駄となったり、カバーを取り外したり縫糸
を取り除いたり、再びカバーを取付けたりする余分な手
間を必要としないから、経済的で且つ作業能率が向上す
る効果がある。Thread this invention as described above, according to the invention] is a plate-shaped rotary cam 4 in which the outer peripheral cam shape, the yarn guide groove 5a for respectively opposite on both sides of the rotation cam 4, which is fixedly arranged provided 5b A guide 6 and the sewing thread is
The thread guide grooves 5a are so contacted as to cross the circumference.
5b, the thread guide groove 5
a, 5b , the sewing thread
Contacts the sewing thread with a force greater than the contact resistance between the
Since the winding prevention members 15a and 15b are provided, the sewing thread does not wind around the rotating balance, and a large amount of the sewing thread is wound around the balance and is wasted. Since there is no need for extra labor to be performed, there is an effect that it is economical and the work efficiency is improved.
【図１】この考案の全体斜視図である。FIG. 1 is an overall perspective view of the present invention.
【図２】この考案の要部の分解斜視図である。FIG. 2 is an exploded perspective view of a main part of the present invention.
【図３】この考案の巻き付き防止部材の一例としての配
置を示す斜視図である。FIG. 3 is a perspective view showing an arrangement as an example of a winding prevention member of the present invention.
Ａ 回転天秤機構 ４ 回転カム ５ａ、５ｂ 糸案内溝 ６ 糸案内 １３ 天秤カバー １４ 案内カバー １５ａ、１５ｂ 巻き付き防止部材の一例としてのブラ
シ材 １６ 補助カバーA rotating balance mechanism 4 rotating cam 5a, 5b thread guide groove 6 thread guide 13 balance cover 14 guide cover 15a, 15b brush material as an example of a winding prevention member 16 auxiliary cover
Claims (1)
と、その回転カムの両側面にそれぞれ対向する糸案内溝
を設け固定配置した糸案内とを備え、縫糸が前記回転カ
ムにその外周を横切った状態で接触するように前記糸案
内溝に案内される回転天秤において、 上記糸案内溝よりも回転カムの回転方向側に配設し前記
縫糸と接触する巻き付き防止部材を設け、前記巻き付き
防止部材が前記縫糸と回転カムとの接触抵抗より大なる
力で縫糸と接触し、縫糸の回転カムへの巻き付きを防止
することを特徴とするミシンの回転天秤。1. A rotary cam having a plate-like outer periphery having a cam-shaped outer periphery, and thread guide grooves provided on both sides of the rotary cam, each of which has a thread guide groove facing each other and fixedly arranged, and a sewing thread is provided on the rotary cam.
Thread so that it touches the
In the rotary balance guided in the inner groove, the rotary balance is disposed on the rotation direction side of the rotary cam with respect to the yarn guide groove.
The winding prevention member contacts the sewing thread is provided, with the winding
The prevention member is larger than the contact resistance between the sewing thread and the rotating cam.
A rotating balance for a sewing machine, wherein a sewing thread is brought into contact with a sewing thread by force to prevent winding of the sewing thread around the rotating cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992046169U JP2593469Y2 (en) | 1992-07-02 | 1992-07-02 | Sewing machine balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992046169U JP2593469Y2 (en) | 1992-07-02 | 1992-07-02 | Sewing machine balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH067676U JPH067676U (en) | 1994-02-01 |
| JP2593469Y2 true JP2593469Y2 (en) | 1999-04-12 |
Family
ID=12739524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992046169U Expired - Fee Related JP2593469Y2 (en) | 1992-07-02 | 1992-07-02 | Sewing machine balance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2593469Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0354999Y2 (en) * | 1986-09-05 | 1991-12-05 | ||
| JPH026555A (en) * | 1988-06-24 | 1990-01-10 | Asahi Chem Ind Co Ltd | Polyamide resin composition |
-
1992
- 1992-07-02 JP JP1992046169U patent/JP2593469Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH067676U (en) | 1994-02-01 |
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Free format text: JAPANESE INTERMEDIATE CODE: R323533 |
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