JPH0251632B2 - - Google Patents
Info
- Publication number
- JPH0251632B2 JPH0251632B2 JP63109691A JP10969188A JPH0251632B2 JP H0251632 B2 JPH0251632 B2 JP H0251632B2 JP 63109691 A JP63109691 A JP 63109691A JP 10969188 A JP10969188 A JP 10969188A JP H0251632 B2 JPH0251632 B2 JP H0251632B2
- Authority
- JP
- Japan
- Prior art keywords
- fabric
- sewing machine
- feed dog
- trapezoidal
- diamond grains
- 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 - Lifetime
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はミシンの送り歯並びにその製造方法に
関する。詳説すれば、ミシンの送り歯の歯部の構
造並びにその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a feed dog for a sewing machine and a method for manufacturing the same. More specifically, the present invention relates to a structure of a tooth portion of a feed dog of a sewing machine and a method of manufacturing the same.
（従来の技術）
従来より一般的に使用されているミシンの送り
歯は、第６図、第７図に図示のように、本体２上
に三条の歯部ａ，ｂ，ｃをほぼ平行に設ける。歯
部ａ，ｂ，ｃは台形部にそれぞれ山形凹凸状の歯
部を加工したものである。これらの歯部はそれぞ
れ第３図に図示の針板１２の長溝１４，１６，１
８へ下方より挿入され、後述する四運動により布
地を送るものである。針板１２をミシンヘツド２
８のベツド３０に設けた凹部に収納固着１３し
（第５図）、その前面にはすべり板２６を収納す
る。前記針板１２の上面に縫着すべき布地Ｗを載
置し、上方より押え具２０の押え金２２で布地Ｗ
を押圧する。ミシンヘツド２８に配設した糸ガイ
ド３２，３４，３６をへて縫い糸（図示せず）を
針棒２４に取りつけた針（図示せず）の針孔に挿
通する。ミシンを駆動することにより、送り歯本
体２は、これに固定３した送り歯土台（図示せ
ず）と共に四運動をなし、その歯部ａ，ｂ，ｃで
布地Ｗを下方向より上方→前進平行方向→下方→
後進平行方向へと変位させるから、歯部ａ，ｂ，
ｃに接している布地Ｗは前方矢印方向へフイード
され、これにタイミングを合せて針棒２４の針は
針板１２の針孔１５内を上下動する。針棒２４の
針に取りつけた縫い糸（上糸）は布地Ｗを挿通
し、針板１２の下方に設けたカマ内に収納された
ボビンよりくり出される下糸（いずれも図示せ
ず）との共働により布地Ｗに本縫い目を形成す
る。(Prior Art) The feed dog of a sewing machine that has been commonly used in the past has three tooth sections a, b, and c arranged almost parallel to each other on a main body 2, as shown in FIGS. 6 and 7. establish. The tooth portions a, b, and c are each formed by machining a trapezoidal portion into a chevron-shaped uneven tooth portion. These teeth correspond to the long grooves 14, 16, 1 of the throat plate 12 shown in FIG.
8 from below, and feeds the fabric through the four movements described below. Place the needle plate 12 on the sewing machine head 2.
It is stored and fixed 13 in a recess provided in the bed 30 of No. 8 (FIG. 5), and a sliding plate 26 is stored in the front surface thereof. The fabric W to be sewn is placed on the upper surface of the throat plate 12, and the fabric W is sewn from above using the presser foot 22 of the presser foot 20.
Press. A sewing thread (not shown) is passed through the thread guides 32, 34, and 36 provided in the sewing machine head 28 and inserted into the needle hole of a needle (not shown) attached to the needle bar 24. By driving the sewing machine, the feed dog body 2 makes four movements together with the feed dog base (not shown) fixed thereto, and its teeth a, b, and c move the fabric W from the bottom upward → forward. Parallel direction→Downward→
Since the teeth are displaced in the backward parallel direction, the teeth a, b,
The fabric W in contact with c is fed in the forward arrow direction, and the needle of the needle bar 24 moves up and down in the needle hole 15 of the throat plate 12 in synchronization with this feed. The sewing thread (needle thread) attached to the needle of the needle bar 24 passes through the fabric W and connects with the bobbin thread (both not shown) drawn out from a bobbin stored in a hook provided below the needle plate 12. A final seam is formed in the fabric W by working together.
（発明の解決しようとする課題）
ところが、本体２の山形歯部ａ，ｂ，ｃは金属
材に成型又はフライス加工等で形成され、その上
面にメツキ加工を施したものであり、長期使用の
際布地との接触に起因する摩擦により、山形歯部
は摩耗を生じ、しばしば円滑な布地送りができな
くなり、これがため新規のものと交換せねばなら
ない等の煩わしさもあり、又歯部ａ，ｂ，ｃを山
形歯形に形成するために製作工程が面倒である等
の問題点もあり、更に布地を送り出す際山形歯部
頂部で布地へ接触して、布地を下方より押上げて
前方へ送り出すので、山形歯部の頂部と布地との
接触面が小さいため布地特に薄い布地を送り出す
際にスリツプ状態となつたり、布地にしわが発生
し平滑な送りが実施できない等の問題点もあつ
た。(Problem to be Solved by the Invention) However, the chevron-shaped tooth portions a, b, and c of the main body 2 are formed from a metal material by molding or milling, and the upper surface is plated, which makes it difficult for long-term use. Friction caused by contact with the fabric causes wear on the chevron-shaped teeth, often making it impossible to feed the fabric smoothly, resulting in the inconvenience of having to replace them with new ones. , c are formed into a chevron-shaped tooth shape, which makes the manufacturing process cumbersome. Furthermore, when the fabric is fed out, the top of the chevron-shaped teeth contacts the fabric, pushing the fabric up from below and feeding it forward. Since the contact surface between the top of the chevron-shaped teeth and the fabric is small, there have been problems such as slippage when feeding especially thin fabrics, wrinkles in the fabric, and the inability to feed the fabric smoothly.
（課題を解決するための手段）
本発明は前記の課題を解決することを目的とす
るもので、以下その解決手段を提供する。すなわ
ち、本発明におけるミシンの送り歯には従来例の
ものと異なり台形部に山形凹凸状歯部を形成せず
して、直接台形部の平面上にダイヤモンド粒を付
着したものである。ダイヤモンド粒の付着には電
着方法等を最適とする。(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems, and the means for solving the problems will be provided below. That is, in the feed dog of the sewing machine according to the present invention, diamond grains are directly attached to the flat surface of the trapezoidal portion without forming a chevron-shaped tooth portion on the trapezoidal portion, unlike the conventional example. Electrodeposition is the most suitable method for attaching diamond particles.
（作用）
送り歯の台形部面にダイヤモンド粒を付着して
あるから、針板の孔部において四運動により送り
歯台形部が変位して布地を所定方向へフイードす
る際、前記ダイヤモンド粒は布地の下面に接して
その摩擦力により布地を所定方向へフイードす
る。(Function) Since diamond grains are attached to the trapezoidal part of the feed dog, when the trapezoidal part of the feed dog is displaced by the four movements in the hole of the throat plate and feeds the fabric in a predetermined direction, the diamond grains are attached to the trapezoidal part of the feed dog. It comes in contact with the lower surface of the fabric and uses its frictional force to feed the fabric in a predetermined direction.
（実施例）
以下添付図面を参照して本発明に係るミシンの
送り歯並びにその製造方法について説明する。(Example) The feed dog of a sewing machine according to the present invention and its manufacturing method will be described below with reference to the accompanying drawings.
通常送り歯本体２は金属加工例えば成型又はプ
ラスチツク加工により製造されている。孔部ｈの
両縁並びにこの両縁中間部とに互いに平行な台形
突起４，６，８を形成する。従来例においては、
これらの台形突起４，６，８を山形凹凸状歯部に
形成するものであるが、本発明においては、単に
台形突起の上面にダイヤモンド粒Ｄを付着する。
この付着方法としては、電着メツキ方式を採用し
てもよい。すなわち送り歯本体２にメツキを施す
際に、前記台形突起４，６，８上面にダイヤモン
ド粒を電着する。尚、前記ミシンの送り歯本体２
は送り歯土台に螺着３する。 Usually, the feed dog main body 2 is manufactured by metal processing, for example, molding or plastic processing. Trapezoidal protrusions 4, 6, and 8 parallel to each other are formed on both edges of the hole h and at the intermediate portions of both edges. In the conventional example,
Although these trapezoidal protrusions 4, 6, and 8 are formed into toothed portions having a chevron-shaped unevenness, in the present invention, diamond grains D are simply attached to the upper surfaces of the trapezoidal protrusions.
As this attachment method, an electrodeposition plating method may be adopted. That is, when plating the feed dog main body 2, diamond grains are electrodeposited on the upper surfaces of the trapezoidal protrusions 4, 6, and 8. In addition, the feed dog main body 2 of the sewing machine
is screwed onto the feed dog base 3.
（効果）
本発明におけるミシンの送り歯は、その製造に
際し、従来例のような複雑な山形歯部の加工を必
要とせず、ダイヤモンド粒を上面に付着した台形
突起部は台形上面に接触する布地を四運動により
容易に所定方向へ送り出すことができ、従来例の
送り歯の山形歯部を具えたものと比較して、耐久
性に富んでいる。又従来例の山形歯部はその山形
の頂部が布地に接触し、これを所定方向へ送り出
す際に、布地特に薄い布地を送り出す際、布地と
の間にスリツプ状態となつたり、布地にしわが発
生するのに対し、本発明のミシンの送り歯はダイ
ヤモンド砥粒を付着した台形歯部平面で布地を送
り出すので、布地と台形歯部の上面と接触する面
が広くなるから、ダイヤモンド粒の摩擦作用と共
働して布地の送り作業が容易円滑であり、又従来
例のように山形歯部により布地特に薄い布地に発
生するしわや、歯部と布地とのスリツプ状態を防
止できる等の効果がある。(Effects) The feed dog of the sewing machine according to the present invention does not require complicated machining of the chevron-shaped tooth portion as in the conventional example, and the trapezoidal protrusion portion with diamond grains attached to the upper surface is attached to the fabric in contact with the upper surface of the trapezoid. can be easily sent in a predetermined direction by four movements, and is more durable than conventional feed teeth with chevron-shaped teeth. In addition, the top of the chevron in the conventional example comes into contact with the fabric, and when feeding it in a predetermined direction, especially when feeding thin fabric, slippage may occur between the teeth and the fabric, or wrinkles may occur in the fabric. On the other hand, the feed dog of the sewing machine of the present invention feeds the fabric with the flat surface of the trapezoidal tooth to which diamond abrasive grains are attached, so the surface in contact with the fabric and the upper surface of the trapezoidal tooth is wider, so the frictional effect of the diamond grains is reduced. Working in conjunction with this, it is easy and smooth to feed the fabric, and the chevron-shaped teeth prevent creases that occur in fabrics, especially thin fabrics, and prevent slippage between the teeth and the fabric. be.
第１図は本発明に係るミシンの送り歯の平面
図。第２図は第１図の斜視図。第３図はミシンの
針板の平面図。第４図はミシンの押え具の一部切
欠断面図。第５図はミシンヘツドの斜視図。第６
図は従来例のミシンの送り歯の平面図。第７図は
第６図の斜視図。
Ｄ…ダイヤモンド粒、ｈ…孔部、Ｗ…布地、２
…送り歯本体、４，６，８…台形突起、１２…針
板、１４，１６…長溝、１５…針孔、１８…長
溝、２０…押え具、２２…押え脚、２４…針棒、
２８…ミシンヘツド、３０…ミシンベツド、３
２，３４，３６…糸ガイド。
FIG. 1 is a plan view of a feed dog of a sewing machine according to the present invention. FIG. 2 is a perspective view of FIG. 1. Figure 3 is a plan view of the needle plate of the sewing machine. FIG. 4 is a partially cutaway sectional view of the presser foot of the sewing machine. FIG. 5 is a perspective view of the sewing machine head. 6th
The figure is a plan view of the feed dog of a conventional sewing machine. FIG. 7 is a perspective view of FIG. 6. D... Diamond grain, h... Hole, W... Fabric, 2
... Feed dog body, 4, 6, 8... Trapezoidal protrusion, 12... Throat plate, 14, 16... Long groove, 15... Needle hole, 18... Long groove, 20... Presser, 22... Presser foot, 24... Needle bar,
28...Sewing machine head, 30...Sewing machine bed, 3
2, 34, 36... Thread guide.
Claims (1)
イヤモンド粒を付着し、この台形突起部が四運動
をなしてその台形突起部上面が布地に接触をなし
つつこれを送り出すことを特徴とするミシンの送
り歯。 ２ ダイヤモンド粒を台形突起面に電着した請求
項１記載のミシンの送り歯。 ３ 孔部とこの孔部の両縁部とこの両縁部の中間
部とに互いに平行に設けた台形突起部を有する本
体を製作する工程と、前記台形突起部面にダイヤ
モンド粒を付着する工程と、本体にメツキを施す
工程とよりなるミシンの送り歯の製造方法。[Scope of Claims] 1. Diamond grains are attached to the trapezoidal protrusion surface formed at the edge of the hole of the main body, and the trapezoidal protrusion makes four movements so that the upper surface of the trapezoidal protrusion comes into contact with the fabric. The feed dog of a sewing machine is characterized by feeding out. 2. The feed dog for a sewing machine according to claim 1, wherein diamond grains are electrodeposited on the surface of the trapezoidal projection. 3. A step of manufacturing a main body having a trapezoidal protrusion provided parallel to each other in a hole, both edges of the hole, and a middle portion between the edges, and a step of attaching diamond grains to the surface of the trapezoidal protrusion. A method of manufacturing a feed dog for a sewing machine, which includes the steps of plating the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10969188A JPH01280495A (en) | 1988-05-02 | 1988-05-02 | Feed gear for sewing machine and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10969188A JPH01280495A (en) | 1988-05-02 | 1988-05-02 | Feed gear for sewing machine and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01280495A JPH01280495A (en) | 1989-11-10 |
| JPH0251632B2 true JPH0251632B2 (en) | 1990-11-08 |
Family
ID=14516750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10969188A Granted JPH01280495A (en) | 1988-05-02 | 1988-05-02 | Feed gear for sewing machine and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01280495A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04348819A (en) * | 1991-05-27 | 1992-12-03 | Goei Seisakusho:Kk | Diamond cutter for sewing machine and manufacture thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129223U (en) * | 1979-03-02 | 1980-09-12 |
-
1988
- 1988-05-02 JP JP10969188A patent/JPH01280495A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01280495A (en) | 1989-11-10 |
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