JPH0332694A - Position detector - Google Patents
Position detectorInfo
- Publication number
- JPH0332694A JPH0332694A JP16838289A JP16838289A JPH0332694A JP H0332694 A JPH0332694 A JP H0332694A JP 16838289 A JP16838289 A JP 16838289A JP 16838289 A JP16838289 A JP 16838289A JP H0332694 A JPH0332694 A JP H0332694A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- position detection
- pulley
- position detecting
- rotating body
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000009958 sewing Methods 0.000 abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 238000007747 plating Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 230000036316 preload Effects 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100535994 Caenorhabditis elegans tars-1 gene Proteins 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position
- D05B69/24—Applications of devices for indicating or ascertaining sewing-tool position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sewing Machines And Sewing (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、回転体からミシンの針位置を検出する針位
置検出装置などの位置検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a position detection device such as a needle position detection device that detects the needle position of a sewing machine from a rotating body.
［従来の技術］
ｔｓＱ図から第１３図は実開昭６１−４５０８１号公報
に示された従来のミシンの針位置検出装置である。図に
おいて、
（２）はミシン針を上下動させる主軸で、ミシン機枠（
１）と一体内な構造をする軸受（ｌａ）に回転可能に支
持されている。[Prior Art] Figures tsQ to 13 show a conventional sewing machine needle position detection device disclosed in Japanese Utility Model Application No. 45081/1981. In the figure, (2) is the main shaft that moves the sewing machine needle up and down, and the sewing machine frame (
1) is rotatably supported by a bearing (la) that is integral with the bearing (la).
（３）はベルト（１２）によってモータ（図示せず）か
らの伝達動力を受けるブーりで、主軸（２）と−体内に
回転するように固定されている。Reference numeral (3) denotes a boob which receives transmitted power from a motor (not shown) through a belt (12), and is fixed to the main shaft (2) so as to rotate within the body.
（４）および（５）は、それぞれ環状の針下位置検出板
及び針上位置検出板で、プーリ（３）のミシン機枠（１
）側の面で、針下位置検出板（４）が外周側に、針上位
置検出板（５）が内周側になるように、主軸（２）に対
し同心的に配置されている。針上位置検出板（５）は、
主軸（２〉と同心の円弧状をなす長孔（３ａ）を押通す
る止めねじ（１０）により、プーリ（３）に固定されて
いる。その長孔（３ａ）の作用で、針上位置検出板（５
〉はプーリ（３）外から回転方向に任意に位置調整する
ことが可能になる。軒下位置検出板（４）は、針上位置
検出板（５）の外周部とプーリ（３）との間に挾持され
、その外周に設けられた凸部（４ｄ）がプーリ（３〉の
凹部（３ｂ〉と嵌合することによって円周方向に回転不
能に固定されている。(4) and (5) are annular needle down position detection plates and needle up position detection plates, respectively, which are attached to the sewing machine frame (1) of the pulley (3).
) side surface, the needle down position detection plate (4) is arranged concentrically with respect to the main shaft (2) so that the needle up position detection plate (5) is on the outer circumference side and the needle up position detection plate (5) is on the inner circumference side. The needle top position detection plate (5) is
It is fixed to the pulley (3) by a set screw (10) that is pushed through an arcuate elongated hole (3a) concentric with the main shaft (2). Detection plate (5
> can be arbitrarily adjusted in the rotational direction from outside the pulley (3). The under-eaves position detection plate (4) is sandwiched between the outer periphery of the needle-top position detection plate (5) and the pulley (3), and the convex part (4d) provided on the outer periphery of the plate is inserted into the recess of the pulley (3>). (3b>), it is fixed unrotatably in the circumferential direction.
針下位置検出板（４〉は、その内周側に針下位置検出用
透孔（４ｂ〉と、その外周側に回転速度検出用透孔（４
ｃ）とを有し、それらの透孔を除く面を鏡面状の反射面
（４ａ）としている。第１３図に示すように、プーリ（
３）の前記透孔（４ｂ） 、 （４ｃ）と対向する部分
には、反射面（４ａ）に対して底面を傾斜した凹溝（３
ｃ）が形成されかつ黒く着色されているので、透孔（４
ｂ） 、（４ｃ）の部分においてはほとんど反射作用を
しない。The needle down position detection plate (4) has a through hole (4b) for detecting the needle down position on its inner circumference and a through hole (4b) for detecting rotational speed on its outer circumference.
c), and the surface excluding those through holes is a mirror-like reflective surface (4a). As shown in Figure 13, the pulley (
In the part facing the through holes (4b) and (4c) of 3), there is a groove (3) whose bottom surface is inclined with respect to the reflective surface (4a).
c) is formed and colored black, so the through hole (4
Parts b) and (4c) have almost no reflective action.
（６ａ）は透孔（５ｂ）に対向位置する針上位置検出器
、（６ｂ）は軒下板検出用透孔（４ｂ）に対向位置する
針下位置検出器、（６Ｃ）は回転速度検出用透孔（４ｃ
）に対向位置する回転速度検出器で、それぞれ投光手段
と受光手段とを有しており、投光手段から発した光の反
射光の有無を、反射面（４ａ） 、 （５ａ）であるの
か非反射用透孔（４ｂ） 、（４ｃ） 、 （５ｂ）で
あるのかに応じて受光手段で検知し、位置検出信号を出
力する。(6a) is a needle upper position detector located opposite to the through hole (5b), (6b) is a needle lower position detector located opposite to the through hole (4b) for detecting the under eave plate, (6C) is for rotation speed detection. Through hole (4c
), each of which has a light emitting means and a light receiving means, and detects whether or not the light emitted from the light emitting means is reflected by the reflecting surfaces (4a) and (5a). It is detected by the light receiving means depending on whether it is a non-reflection through hole (4b), (4c), or (5b), and a position detection signal is output.
検出器（６ａ） 、 （６ｂ） 、 （Ｂｅ）は、プリ
ント基板（９）に取付けられており、検出器の投光面お
よび受光面を除いて検出器カバー（７）で覆われている
。その検出器カバー（７〉は、カバー押え具（８）を介
してねじ（１１）で軸受（１ａ）に固定されている。The detectors (6a), (6b), and (Be) are attached to a printed circuit board (9), and are covered with a detector cover (7) except for the light emitting and light receiving surfaces of the detectors. The detector cover (7>) is fixed to the bearing (1a) with screws (11) via a cover holder (8).
［発明が解決しようとする課題］
従来の針位置検出装置は以上のように構成されているの
で、針上位置検出板の調整にはねじ（ｌＯ）をゆるめる
必要があり、調整作業が煩雑で、さらに針下位置検出板
は針上位置検出板に回転不能に固定されているので個別
に調整ができない。[Problem to be solved by the invention] Since the conventional needle position detection device is configured as described above, it is necessary to loosen the screw (lO) to adjust the needle top position detection plate, making the adjustment work complicated. Furthermore, since the needle down position detection plate is fixed to the needle up position detection plate in a non-rotatable manner, it cannot be adjusted individually.
また、非反射面に透孔を使用しているので、この透孔と
対向するブーり部分には、反射面に対して底面を傾斜し
た凹溝を形成し、かつ黒く着色しなければならず、加工
に工数を要し高価なものになるなどの問題点を有してい
た。Additionally, since a through hole is used on the non-reflective surface, the part of the boob facing the through hole must have a concave groove with the bottom sloped to the reflective surface, and must be colored black. However, there were problems in that it required many man-hours to process and was expensive.
本発明は従来装置の上記問題点を解消するためになされ
たもので、回転軸を支持する支持体とこの回転軸に固定
されて回転する回転体の間に位置検出用の環状体がある
とき、回転体外からねじをゆるめることもなく簡単に位
置検出用の環状体の立置調整ができるとともに、透孔と
対向するプーリ部分に必要であった凹溝や、黒の着色が
不要となる安価ですぐれた位置検出装置を提供しようと
するものである。The present invention has been made in order to solve the above-mentioned problems of the conventional device. , the annular body for position detection can be easily vertically adjusted without loosening screws from outside the rotating body, and it is inexpensive because it eliminates the need for grooves and black coloring, which were required on the pulley part facing the through hole. The aim is to provide an excellent position detection device.
［課題を解決するための手段］
上記目的を達成するため、本発明に係る位置検出装置は
、
（ａ） 申出 と 、
（ｂ）該軸を回転可能に支持する支持体と、（Ｃ）上記
軸に固着されかつ軸方向に貫通した少なくとも１個の所
定形状の孔を備えた回転体と、（ｄ）上記支持体と回転
体との間に上記軸と同心に、回転体に対し回動不能の滑
り板を挾持して配置され、回転体とともに回転するため
に回転体側に押圧されており％
（ｄ２）回転体側の環状体の、支持体側の環状体と重な
らない部分に位置検出部が設けられ、（ｄ３〉上記回転
体側の環状体の、支持体側の孔を介して力を加えること
により回転体に対し相対的に回動し得るように構成され
ている
諸
の環状体と、
（ｅ）上記支持体に固着され、回転する環状体の位置検
出を行う位置検出器と
を備えて構成されている。[Means for Solving the Problems] In order to achieve the above object, a position detection device according to the present invention includes (a) an offer, (b) a support that rotatably supports the shaft, and (C) the above-mentioned. (d) a rotating body fixed to a shaft and provided with at least one hole of a predetermined shape passing through the shaft in the axial direction; (d2) A position detection part is located on the part of the annular body on the rotating body side that does not overlap with the annular body on the supporting body side. (d3) Annular bodies configured to be able to rotate relative to the rotating body by applying force through holes on the supporting body side of the annular body on the rotating body side; e) a position detector which is fixed to the support and detects the position of the rotating annular body.
また上記環状体の反射材料の表面を着色して位置検出部
を形成している。Further, the surface of the reflective material of the annular body is colored to form a position detection section.
〔作用］
上記のように構成された位置検出装置においては、まず
環状体を回転体に押圧し、回転体の回転に伴って環状体
も回転するように構成されているので、環状体を回転体
に固着させるためのねじが不要となる。また回転体に穿
設した孔を介して環状体に力を加え環状体を回転させら
れるので、位置の調整が容易である。さらに２個の環状
体間に滑り板を挾持させているので、個々の環状体の位
置調整の際一方の環状体の回転が他に伝わることがない
。[Operation] In the position detection device configured as described above, the annular body is first pressed against the rotating body, and the annular body is rotated as the rotating body rotates, so the annular body is rotated. There is no need for screws to secure it to the body. Further, since the annular body can be rotated by applying force to the annular body through the hole formed in the rotating body, the position can be easily adjusted. Furthermore, since the sliding plate is sandwiched between the two annular bodies, the rotation of one annular body is not transmitted to the other when adjusting the position of each annular body.
それに環状体を反射材料により形成し、その表面に黒の
着色を施して位置検出部を形成したので、透孔を使用す
る場合に必要であった凹溝が不要となった。The annular body was formed of a reflective material, and the surface thereof was colored black to form the position detection part, so that the groove that was required when using a through hole became unnecessary.
［実施例］ 以下、本発明の一実施例を図により説明する。[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
ｔｒｓ１図において、（１）は支持体となるミシン機枠
、（２）はミシン針を上下動させる主軸で、ミシン機枠
（１）に軸受（ｌａ）を介し回転可能に支持されている
。〈３）はベルト（図示せず）によりモータ（図示せず
）からの伝達力を受けるプーリで、主軸（２）に固着さ
れ、主軸（２）と一体内に回転する。In the trs1 diagram, (1) is a sewing machine frame that serves as a support, and (2) is a main shaft that moves the sewing machine needle up and down, which is rotatably supported by the sewing machine frame (1) via a bearing (la). Reference numeral 3 is a pulley that receives transmission force from a motor (not shown) through a belt (not shown), and is fixed to the main shaft (2) and rotates integrally with the main shaft (2).
（４）及び（５）はディスク状に形成された針下位置検
出板及び針上位置検出板で、プーリ（８）のミシン機枠
（１）側の内部で、計上位置検出板（５）が内側に、針
下位置検出板（４）が外側に配設され、プーリ（３〉に
対し回転可能である。（２０）は針上位置検出板（５）
と針下位置検出板（４）の間に配置されたスベリ板で、
その舌部（２０ａ）がプーリ〈３）のにげ部（３ｅ）に
嵌合し、プーリ（３〉とは回動不可能である。(4) and (5) are a needle down position detection plate and a needle up position detection plate formed in a disk shape. is arranged on the inside, and the needle down position detection plate (4) is arranged on the outside, and is rotatable with respect to the pulley (3). (20) is the needle up position detection plate (5).
and the needle down position detection plate (4).
The tongue portion (20a) fits into the barbed portion (3e) of the pulley (3) and cannot rotate relative to the pulley (3).
（２１）は針上下位置検出板（５）、（４）とすべり板
（２０）をプーリ（３〉側に押圧するプレロードスプリ
ングで、主軸の起動・停止・回転により針上下位置検出
板（５）、（４）がプーリ（３）に対しては回転しない
様に圧接している。（２２〉は針上下位置検出板（５）
、（４）とすべり板（２０）とプレロードスプリング（
２１）を押えるための端板でさらにこれら全体をプーリ
（３）に支持するためのＣリング（２３）がプーリ（３
〉に配置されている。(21) is a preload spring that presses the needle up/down position detection plates (5), (4) and the slide plate (20) toward the pulley (3> side. The needle up/down position detection plate (5) is activated by starting, stopping, or rotating the main shaft. ) and (4) are in pressure contact with the pulley (3) so as not to rotate. (22> is the needle up/down position detection plate (5)
, (4), sliding plate (20) and preload spring (
The C-ring (23) is an end plate for holding down the pulley (21) and a C-ring (23) for supporting the entire assembly on the pulley (3).
〉
（６０〉は投光・受光手段を内蔵した検出器、（２４〉
はモータ（図示せず）又はモータを制御する制御盤（図
示せず）にＷｉ源が投入されたとき発光するダイオード
であり、検出器（６０）の突出部（２０）にあって、検
出器（ＢＯ）のミシン機枠（１）への取付状態で作業者
より見やすい位置に設けられている。(60> is a detector with built-in light emitting/receiving means, (24>
is a diode that emits light when a Wi source is applied to a motor (not shown) or a control panel (not shown) that controls the motor, and is located on the protrusion (20) of the detector (60) and is connected to the detector (60). (BO) is installed in the sewing machine frame (1) at a position that is easier for the operator to see.
（７〉は検出器（６０）のミシン機枠（１）への取付耳
で、ねじ（１１）によりミシン機枠（１）に保持されて
いる。(7>) is a mounting lug for the detector (60) to the sewing machine frame (1), which is held on the sewing machine frame (1) by a screw (11).
第２図は、検出器（ＢＯ）のプーリ（３）側より見た図
で、（７ａ）は取付耳（７）に形成されたねじ（４１）
用の長孔で、検出器（６０〉をミシン機枠（１）へ取付
ける際、回転方向の調整が可能である。（７ｂ）は取付
耳と一体に成形された角度目盛で調整角度を知ることが
できる。（６ａ）は針下位置検出器、（Ｏｂ）は針上位
置検出器、（６ｃ）は回転速度検出器で、それぞれ投光
手段と受光手段を有し、反射面の段差に応じて投光から
受光までの距離が同一となるような位置に配置されてい
る。Figure 2 is a view of the detector (BO) seen from the pulley (3) side, and (7a) shows the screw (41) formed in the mounting ear (7).
When installing the detector (60) to the sewing machine frame (1), the rotation direction can be adjusted using the elongated hole. (7b) is an angle scale molded integrally with the mounting lug to know the adjustment angle. (6a) is a needle down position detector, (Ob) is a needle up position detector, and (6c) is a rotational speed detector, each of which has a light emitting means and a light receiving means, Accordingly, they are arranged at positions such that the distance from light emission to light reception is the same.
第３図は針下位置検出板（４）のミシン機枠側より見た
図で、（４ｂ）は位置検出部となる針下位置検出用反射
面で、透明のプラスチック材料の裏面にアルミ・クロム
等のメツキを施しである。〈４ａ〉は非反射面で、表面
は印刷等により黒色に着色されている。（４ｒ）はプー
リ（３〉外より針下位置検出板（４〉の回転方向を調整
をするために設けられた加力調整部となる調整用孔であ
る。第４図は針上位置検出板（５〉のミシン機枠側より
見た図で、（５ｂ〉は位置検出部となる計上位置に対応
する計上位置検出用反射面で、透明のプラスチック材料
の裏面にアルミ・クロム等のメツキを施したものである
。Figure 3 is a view of the needle down position detection plate (4) seen from the sewing machine frame side, and (4b) is the reflective surface for needle down position detection which becomes the position detection part, and is made of aluminum on the back side of the transparent plastic material. It is plated with chrome etc. <4a> is a non-reflective surface, and the surface is colored black by printing or the like. (4r) is an adjustment hole that serves as a force adjustment section provided to adjust the rotation direction of the needle down position detection plate (4) from the outside of the pulley (3). Figure 4 shows the needle up position detection This is a view from the side of the sewing machine frame of the board (5), where (5b) is the position detection reflective surface for detecting the recorded position corresponding to the recorded position, and the back side of the transparent plastic material is plated with aluminum, chrome, etc. It has been subjected to
（５ａ〉は非反射面で表面は印刷等により黒く着色され
ている。（５ｃ）は回転速度検出に対応する回転速度検
出用反射面、（５ｆ）はプーリ（３）外より針上位置検
出板〈５〉の回転方向調整をするために設けられた加カ
ニＡｆｉ部となる調整用孔である。（５ｅ）は針下位置
検出板（４）の加力調整部となる調整孔（４ｒ）に対応
して穿設され、針下位置検出板（４）をプーリ（３〉外
より調整可能とするように設けたにがし孔である。(5a> is a non-reflective surface whose surface is colored black by printing, etc.) (5c) is a reflective surface for rotational speed detection that corresponds to rotational speed detection, (5f) is a needle top position detection from outside of pulley (3) This is an adjustment hole (4r) which is a force adjustment part of the needle lower position detection plate (4). ) is a hole provided so that the needle down position detection plate (4) can be adjusted from outside the pulley (3).
第５図は、すべり板（２０）のミシン機枠側より見た図
で、第６図はプーリ（３〉のミシン機枠側より見た図で
ある。すべり板〈２０〉の舌部（２０ａ）はプーリ〈３
〉のにげ部（３ｅ〉に嵌合し、すベリＩｆ （２０）は
プーリ（３）とは回動不可能となっている。Fig. 5 is a view of the slide plate (20) seen from the sewing machine frame side, and Fig. 6 is a view of the pulley (3) seen from the sewing machine frame side.The tongue portion of the slide plate <20> ( 20a) is the pulley <3
) is fitted into the ridge (3e) of the pulley (3), and the slide If (20) cannot rotate relative to the pulley (3).
第７図はプーリ（３）外より見た図で、（３４）はブー
りを主軸（２）に固定するためのねじ、（３ａ）は針下
位置検出板〈４〉の調整用孔（４ｆ）に対応するプーリ
抜孔、（３ｄ）は針上位置検出板（５〉の調整用孔（５
ｒ〉に対応するブーり抜孔である。（３ｆ）は上記ブー
り抜孔（３ａ） 、（３ｄ）の近傍に刻まれた調整角度
を知るための角度目盛である。（３ｇ）は角度目盛（３
ｒ）の近傍に刻まれた調整区分を明確にするための針上
位置、針下位置調整区分用文字である。Figure 7 is a view from outside of the pulley (3), where (34) is the screw for fixing the pulley to the main shaft (2), and (3a) is the adjustment hole (3) on the needle lower position detection plate (4). (4f) corresponds to the pulley extraction hole, (3d) is the adjustment hole (5) of the needle top position detection plate (5>
This is a boob hole corresponding to r〉. (3f) is an angle scale engraved near the boob holes (3a) and (3d) for determining the adjustment angle. (3g) is the angle scale (3g)
These are characters for needle upper position and needle lower position adjustment divisions engraved near r) to clarify the adjustment divisions.
本発明に係る位置検出装置は上記のように構成されてい
る。したがって針上下位置の回転方向角度の調整は、ね
じをゆるめることなく針上下位置検出板（５）、（４）
の調整用孔（５ｆ’）、（４ｆ）をプーリ（３）外より
、ブーり抜孔（３ａ） 、 （３ｄ）を通じて回転させ
ることにより行なうことができる。このとき、針上下位
置検出板（５）と（４）の間にはプーリ（３）とは回動
不可能に設けられたすべり板（２０）が配置されている
で、各々の位置検出板の回転力はこのすべり阪で遮断さ
れ、片方の位置検出板：Ａ整時に他方の位置検出板を同
動させることはない。また角度調整を容易にするには第
８図に示した治具を用いればよい。角度調整用治具（２
５）の先端（２５ａ）を針上下位置検出板（５）、（４
） （７）調整用孔（５ｒ）、（４ｆ）に押入すること
で、容易に角度調整を行なうことができる。The position detection device according to the present invention is configured as described above. Therefore, the rotation direction angle of the needle up and down position can be adjusted by using the needle up and down position detection plates (5) and (4) without loosening the screws.
This can be done by rotating the adjustment holes (5f') and (4f) from outside the pulley (3) through the boob holes (3a) and (3d). At this time, a sliding plate (20) that cannot be rotated relative to the pulley (3) is arranged between the needle up and down position detection plates (5) and (4), so that each position detection plate The rotational force of is blocked by this sliding slope, and when one position detection plate A is aligned, the other position detection plate is not moved at the same time. Further, in order to facilitate the angle adjustment, a jig shown in FIG. 8 may be used. Angle adjustment jig (2
5) with the tip (25a) of the needle up/down position detection plate (5), (4
) (7) By pushing into the adjustment holes (5r) and (4f), the angle can be easily adjusted.
また針上位置、針下位置調整の区分を明確にするために
針上位置、針下位置調整区分用文字を設けたが角度目盛
の色分けを実施しても良い。Further, in order to clearly distinguish between the needle up position and needle down position adjustments, characters for the needle up position and needle down position adjustment classifications are provided, but the angle scale may be color-coded.
また上記実施例では環状体の圧接にすべり板（２０）、
プレロードスプリング（２１）、端板（２２）、Ｃリン
グ（２３）を用いたが、他の部材を用いてもよい。In addition, in the above embodiment, a sliding plate (20) is used to press the annular body.
Although the preload spring (21), end plate (22), and C ring (23) are used, other members may be used.
また上記実施例では、装置検出に光の送受信を利用した
が、その他の方法を用いてもよい。Further, in the above embodiment, transmission and reception of light is used for device detection, but other methods may be used.
また上記実施例は本発明をミシンの針位置検出装置に利
用した例であるが、ミシンの場合に限らず、一般に本発
明は支持体と回転体の間に位置検出用部材を配置した位
置検出装置に応用して同様な効果を奏する。Furthermore, although the above embodiment is an example in which the present invention is applied to a needle position detection device of a sewing machine, the present invention is not limited to the case of a sewing machine, and generally the present invention is applicable to a position detection device in which a position detection member is disposed between a support body and a rotary body. Similar effects can be achieved when applied to devices.
さらに、針上下検出１！ｉ２ （４） 、 （５）は透
明のプラスチック材料の裏面にアルミ・クロム等のメツ
キを施して反射材料としたが、他の反射材料を用いて表
面に着色し非反１・１面を形成しても良い。Furthermore, needle up and down detection 1! i2 (4) and (5) are made of reflective material by plating the back side of transparent plastic material with aluminum, chrome, etc., but the surface is colored with other reflective material to form a non-reflective 1/1 surface. You may do so.
［発明の効果］
本発明は位置検出装置を上記のように構成したので、従
来の位置検出装置に比し次に述べるような優れた効果を
挙げることができた。[Effects of the Invention] Since the position detecting device of the present invention is configured as described above, it is possible to achieve the following excellent effects compared to conventional position detecting devices.
（１）環状体をスプリングなどで用転体に押圧している
ので、環状体を回転体にとりつけるためのねじが不要と
なり構造が簡単となった。(1) Since the annular body is pressed against the rotating body using a spring or the like, there is no need for screws to attach the annular body to the rotating body, making the structure simple.
（２）２個の環状体間に滑り仮をＴＧ ｔ、’ｊさせた
ので、一方の環状体を回転させても他方に回転が伝わら
ない。(2) Since the sliding temporary TG t,'j is created between the two annular bodies, even if one annular body is rotated, the rotation is not transmitted to the other.
（３）回転体側の環状体に孔を穿設し、この孔を介して
支持体側の環状体を回動し得るようにしたのので、環状
体が複数個の場合でもその位置′：Ｊ５整を個々に行う
ことができる。(3) A hole is drilled in the annular body on the rotating body side, and the annular body on the support body side can be rotated through this hole, so even if there are multiple annular bodies, the position ': J5 alignment can be done individually.
（４）環状体上の位置検出部は透孔を用いず黒い着色と
したので、透孔の場合に必要な凹溝を必要とせず、装置
のコストダウンに寄与する。(4) Since the position detecting section on the annular body is colored black without using a through hole, there is no need for a groove that is required in the case of a through hole, which contributes to reducing the cost of the device.
第１図はこの発明の第一の実施例を示す要部断面図、第
２図は検出器の側面図、第３図は針下位置検出板の平面
図、第４図は針上位置検出板の平面図、第５図はすべり
板の平面図、第６図はプーリの外側正面図、第７図はブ
ーりの内側正面図、第８図は治具の側面図、第９図〜第
１３図は従来装置を示すもので、第９図は要部断面図、
ｍ１０図はブーりの正面図、第１１図は針下位置検出板
及び針上位置検出板の正面図、第１２図は検出器カバー
の正面図、第１３図は凹溝を示す断面図である。
（１）はミシン機枠、（２）は主軸、（３〉はプーリ、
〈４）は針下位置検出板、（５〉は針上位置検出板、（
００〉は検出器、（７〉は取付耳、（２０〉はすべり板
、（２１）はプレロードスプリング、（２２〉は端板、
（２３〉はＣリング、（３ａ） 、（３ｄ）はブーり抜
孔、（３ｒ）は角度目盛、（４ａ）は非反Ｊｌ、を面、
（４ｂ）は針下位置検出用反射面、（４「）は調整用孔
、（５ａ）は非反射面、（５ｂ〉は針上位置検出用反射
面、（５ｃ〉は回転速度検出用反射面、（５１’）は調
整用孔、〈５ｅ〉はにがし孔である。
なお図中同一符号は同−又は相当部分を示す。Fig. 1 is a sectional view of essential parts showing a first embodiment of the present invention, Fig. 2 is a side view of the detector, Fig. 3 is a plan view of the needle down position detection plate, and Fig. 4 is a needle up position detection A plan view of the plate, FIG. 5 is a plan view of the sliding plate, FIG. 6 is an outside front view of the pulley, FIG. 7 is an inside front view of the boot, FIG. 8 is a side view of the jig, and FIGS. Fig. 13 shows a conventional device, Fig. 9 is a sectional view of main parts,
Figure m10 is a front view of the boob, Figure 11 is a front view of the needle lower position detection plate and needle upper position detection plate, Figure 12 is a front view of the detector cover, and Figure 13 is a sectional view showing the groove. be. (1) is the sewing machine frame, (2) is the main shaft, (3> is the pulley,
<4> is the needle down position detection plate, (5> is the needle up position detection plate, (
00> is the detector, (7> is the mounting ear, (20> is the sliding plate, (21) is the preload spring, (22> is the end plate,
(23> is a C ring, (3a), (3d) are boob holes, (3r) is an angle scale, (4a) is a non-reverse Jl, is a surface,
(4b) is a reflective surface for needle down position detection, (4'') is an adjustment hole, (5a) is a non-reflective surface, (5b> is a reflective surface for needle up position detection, (5c> is a reflective surface for rotational speed detection) (51') is an adjustment hole, and <5e> is a tear-off hole. In the drawings, the same reference numerals indicate the same or equivalent parts.
Claims (2)
軸に固着されかつ軸方向に貫通した少なくとも１個の所
定形状の孔を備えた回転体と、（ｄ）上記支持体と回転
体との間に上記軸と同心に、回転体に対し回動不能の滑
り板を挾持して配置され、回転体側の半径を支持体側の
半径より大きくした複数の環状体であって、 （ｄ１）回転体とともに回転し得るように回転体側に押
圧されており、 （ｄ２）回転体側の環状体の、支持体側の環状体と重な
らない部分に位置検出部が設けられ、 （ｄ３）上記回転体に穿設された所定形状の孔を介して
力を加えることにより回転体に対し相対的に回動し得る
ように構成されている 複数の環状体と、 （ｅ）上記支持体に固着され、回転する環状体の位置検
出を行う位置検出器と を備えてなる ことを特徴とする位置検出装置。(1) (a) a shaft; (b) a support for rotatably supporting the shaft; and (c) a rotating shaft having at least one hole of a predetermined shape fixed to the shaft and extending through the shaft in the axial direction. and (d) a sliding plate that is arranged between the support body and the rotating body, concentrically with the axis, and that is not rotatable with respect to the rotating body, and the radius on the rotating body side is larger than the radius on the supporting body side. (d1) are pressed against the rotating body so as to be able to rotate together with the rotating body, and (d2) position detection is performed on a portion of the annular body on the rotating body that does not overlap with the annular body on the support side. (d3) a plurality of annular bodies configured to be able to rotate relative to the rotating body by applying force through holes of a predetermined shape drilled in the rotating body; (e) a position detector fixed to the support and configured to detect the position of the rotating annular body.
表面を着色して位置検出部を形成している ことを特徴とする請求項（１）に記載の位置検出装置。(2) The position detection device according to claim 1, characterized in that in the annular body of the position detection device, the surface of the reflective material is colored to form the position detection portion.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16838289A JPH0767515B2 (en) | 1989-06-30 | 1989-06-30 | Position detector |
| DE19904020892 DE4020892C2 (en) | 1989-06-30 | 1990-06-29 | Position detector |
| US07/596,664 US5176085A (en) | 1988-12-23 | 1990-10-11 | Position detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16838289A JPH0767515B2 (en) | 1989-06-30 | 1989-06-30 | Position detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332694A true JPH0332694A (en) | 1991-02-13 |
| JPH0767515B2 JPH0767515B2 (en) | 1995-07-26 |
Family
ID=15867068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16838289A Expired - Lifetime JPH0767515B2 (en) | 1988-12-23 | 1989-06-30 | Position detector |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0767515B2 (en) |
| DE (1) | DE4020892C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4326640C2 (en) * | 1993-08-09 | 2000-07-06 | Alstom Energietechnik Gmbh | Measuring device for the path of a moving part on an electrical switching device and method for operating a switching device with a measuring device |
| ES2248039T3 (en) * | 1999-01-07 | 2006-03-16 | Seiko Epson Corporation | DETECTION MECHANISM, CARRIAGE AND PRINTER CONTROL DEVICE THAT INCLUDES THESE ELEMENTS. |
| DE19949020C1 (en) * | 1999-10-11 | 2001-04-05 | Viking Sewing Machines Ab Husk | Sewing machine motor assembly, combines fan wheel, screen wheel and drive wheel into multi-function wheel keyed to the motor drive shaft for electronic speed control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7605936U1 (en) * | 1976-02-27 | 1976-06-24 | Georgii Kobold August Heine Kg, 7022 Leinfelden | PULSE POSITION SENSOR FOR SEWING MACHINES |
-
1989
- 1989-06-30 JP JP16838289A patent/JPH0767515B2/en not_active Expired - Lifetime
-
1990
- 1990-06-29 DE DE19904020892 patent/DE4020892C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4020892A1 (en) | 1991-01-31 |
| JPH0767515B2 (en) | 1995-07-26 |
| DE4020892C2 (en) | 1995-04-20 |
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