JPH067676U - Rotary balance of sewing machine - Google Patents
Rotary balance of sewing machineInfo
- Publication number
- JPH067676U JPH067676U JP4616992U JP4616992U JPH067676U JP H067676 U JPH067676 U JP H067676U JP 4616992 U JP4616992 U JP 4616992U JP 4616992 U JP4616992 U JP 4616992U JP H067676 U JPH067676 U JP H067676U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- rotary
- thread
- thread guide
- 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.)
- Granted
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】
【目的】 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５
ａ、５ｂを設け固定配置した糸案内６とを備えた回転天
秤Ａにおいて、ゆるんだ縫糸がその回転カム４に巻き付
くのを防止する。
【構成】 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５
ａ、５ｂを設け固定配置した糸案内６とを備えた回転天
秤Ａにおいて、上記糸案内６よりも回転カム４の回転方
向側に、回転カム４の外周又は回転カム４及び糸案内６
の側面に接触する巻き付き防止部材１５ａ又は１５ｂを
設けた。
(57) [Summary] [Purpose] A plate-shaped rotating cam 4 with a cam-shaped outer periphery,
Thread guide grooves 5 facing the both sides of the rotary cam 4, respectively.
In a rotary balance A having a thread guide 6 fixedly provided with a and 5b, a loose sewing thread is prevented from being wound around the rotary cam 4. [Structure] A plate-shaped rotary cam 4 having a cam-shaped outer periphery,
Thread guide grooves 5 facing the both sides of the rotary cam 4, respectively.
In the rotary balance A provided with a thread guide 6 fixedly provided with a and 5b, the outer circumference of the rotary cam 4 or the rotary cam 4 and the thread guide 6 is located on the rotation direction side of the rotary cam 4 with respect to the thread guide 6.
The anti-winding member 15a or 15b that comes into contact with the side surface of the device is provided.
Description
【０００１】[0001]
この考案は、ミシンの回転天秤に関するものである。 This invention relates to a rotary balance of a sewing machine.
【０００２】[0002]
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。 As a conventional rotary balance of this type, as shown in FIG. 2A, a plate-shaped rotary cam having a fixed portion 3 at one end of a rotary shaft 2 supported by a bearing 1 and a cam-shaped outer periphery. 4 and a thread guide 6 in which thread guide grooves 5a and 5b facing each other on both sides of the rotary cam are fixedly arranged, and a sewing thread 7 is attached to the thread guide grooves 5a and 5b of the rotary cam 4. By passing through the outer periphery and rotating the rotating cam 4 in the direction of the arrow, the outer periphery of the rotating cam 4 moves the sewing thread up and down along the thread guide grooves 5a, 5b to bend the thread path and pick up the sewing thread. There is known a rotary balance having a structure for performing feeding.
【０００３】[0003]
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 near the outer circumference of the rotary cam 4 is slackened, friction with the outer circumference of the rotary cam 4 and the adhesive force with oil adhering to the rotary cam 4 occur. As a result, the sewing thread 7 is wound around the rotating cam 4 when the rotating cam is rotated, a large amount of sewing thread is wasted, and extra work for a long time is required to remove the wound thread. There was a problem.
【０００４】[0004]
上記問題的を解決するために、本考案においては、この種の回転天秤にお いて、糸案内よりも回転カムの回転方向側において、回転カムの外周又は側 面に接触し、縫糸の回転カムへの巻き付きを防止するブラシ等の巻きつき防 止部材を設けた。 In order to solve the above problem, in the present invention, in the rotary balance of this kind, the rotary cam of the sewing thread comes into contact with the outer circumference or the side surface of the rotary cam on the rotation cam side of the rotary cam with respect to the thread guide. A wrapping prevention member such as a brush is provided to prevent wrapping around.
【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。[Operation] Even if the rotating cam rotates and the sewing thread tries to wind around due to friction with the rotating cam, etc., the sewing thread is held by the winding prevention member such as a brush and the winding is prevented, and the sewing thread winds around the rotation cam. There is no.
【０００６】[0006]
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１４の下方内面には、巻き付き防止部材としてのブ ラシ材１５ａ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１６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塞ぐと共に、案内カバー１ ４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。 An embodiment of the present invention will be described below with reference to the drawings. The description of the rotary balance mechanism shown in FIG. 2A described as the conventional technique will be omitted. 10 is a chain stitch sewing machine, which is composed of 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. The balance cover 13 is integrally formed with a guide cover 14 for guiding the sewing thread so that the thread 7 may be inserted into the thread guide grooves 5a and 5b of the thread guide 6 of the rotary balance. Further, a brush material 15a serving as a winding prevention member is fixed to the inner surface of the lower side of the guide cover 14. Reference numeral 16 denotes an auxiliary cover that can be attached to and detached from the balance cover 13. By attaching the auxiliary cover 16 to the balance cover 13, the opening 13a of the balance cover 13 is closed and the auxiliary cover 16 is attached to the peripheral surface of the guide cover 14. An insertion groove 17 for the sewing thread 7 is formed therebetween. Reference numeral 15b is a brush material fixed to the lower inner end surface of the auxiliary cover 16 as a winding preventing member.
【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 シ材１５ａ、１５ｂ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の回転方向側において、回転カム６の外周面に接触し、ブラ シ部材１５ｂ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 portion cover, and by fixing the base portion to the bearing 1, the arcuate portion 18 a at the upper end covers the front periphery of the fixed portion 3 of the rotary cam 4, and the loose sewing thread 7 holds the fixed portion 3 in place. To prevent it from wrapping around the outer circumference. Then, when the balance cover 13 is attached to the arm 12 after the auxiliary cover 16 shown in FIG. 2 is attached to the balance cover 13, the brush members 15a and 15b as the wrap-around preventing members are brushed as shown in FIG. The member 15a contacts the outer peripheral surface of the rotary cam 6 on the rotation direction side of the rotary cam 4 with respect to the thread guide 6, and the brush member 15b partially has a lower end portion of the thread guide groove 5b on the side surface of the thread guide 6. The other end is in contact with the side end surface of the rotary cam 4 on the rotation direction side of 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５ａ、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 this invention will be described. From the state of FIG. 1, in order to pass the thread through the rotary balance mechanism, hold the thread with the fingertips of both hands, hang the center of the thread on the upper end of the guide cover 16, and pull down the fingertips of both hands. As a result, the 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 between the thread guide grooves 5a and 5b traverses the outer circumference of the rotary cam 4. Contact in the open state.
【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 moves up and down along the thread guide grooves 5a and 5b in accordance with the outer peripheral shape of the rotary cam 4 to bend the thread path and pick up the sewing thread. Feed from the source. During this operation, the sewing thread may sag, and due to the frictional resistance with the rotating cam 4 and the viscosity of the oil adhering to the rotating cam, the sewing thread entangles with the rotating cam 4 and tries to wind, but the rotating cam 4 On the other hand, the suture thread is held by the brush materials 15a and 15b, which are arranged and contact as shown in FIG.
【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５ａ、５ ｂ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、５ａ又は５ｂのいずれか一つでも良い。In the illustrated embodiment, the brush material 5a, 5b is shown as the wrapping prevention material, but a sponge material or the like may be used as another member, and the wrapping prevention member is either 5a or 5b. Only one is acceptable.
【００１１】[0011]
以上のようにこの考案は、外周と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とを備えた回転天秤Ａにおいて、糸案内６よりも回転カム４の 回転方向側に、回転カム４の外周又は回転カム４及び糸案内６の側面に接触 する巻き付き防止部材を設けたので、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。 As described above, the present invention is provided with the outer periphery, the cam-shaped plate-shaped rotary cam 4, and the thread guide 6 fixedly provided with the thread guide grooves 5a and 5b facing the both side surfaces of the rotary cam 4, respectively. In the rotary balance A, since the winding prevention member that comes into contact with the outer circumference of the rotary cam 4 or the side surface of the rotary cam 4 and the thread guide 6 is provided on the rotation direction side of the rotary cam 4 with respect to the thread guide 6, the thread is attached to the rotary balance. It is economical and efficient because it does not wind up and a large amount of sewing thread winds around the balance and is wasted. Has the effect of improving.
【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 rotary balance mechanism 4 rotary cams 5a, 5b thread guide groove 6 thread guide 13 balance cover 14 guide covers 15a, 15b brush material as an example of winding prevention member 16 auxiliary cover
Claims (1)
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た回転天秤において、上
記糸案内よりも回転カムの回転方向側において、回転カ
ムの外周又は側面に接触し、縫糸の回転カムへの巻き付
きを防止する巻き付き防止部材を設けたことを特徴とす
るミシンの回転天秤。1. A plate-shaped rotating cam having a cam-shaped outer periphery,
In a rotary balance having a thread guide in which thread guide grooves are provided on both sides of the rotary cam so as to face each other, and fixedly arranged, the thread balance comes into contact with the outer circumference or the side surface of the rotary cam on the rotation direction side of the rotary cam with respect to the thread guide. A rotary balance of a sewing machine, wherein a winding preventing member for preventing the sewing thread from being wound around the rotating cam is provided.
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 true JPH067676U (en) | 1994-02-01 |
| JP2593469Y2 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) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6342946U (en) * | 1986-09-05 | 1988-03-22 | ||
| 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
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6342946U (en) * | 1986-09-05 | 1988-03-22 | ||
| JPH026555A (en) * | 1988-06-24 | 1990-01-10 | Asahi Chem Ind Co Ltd | Polyamide resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2593469Y2 (en) | 1999-04-12 |
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