JPS58225215A - Tube for control cable and manufacture thereof - Google Patents

Tube for control cable and manufacture thereof

Info

Publication number
JPS58225215A
JPS58225215A JP57106772A JP10677282A JPS58225215A JP S58225215 A JPS58225215 A JP S58225215A JP 57106772 A JP57106772 A JP 57106772A JP 10677282 A JP10677282 A JP 10677282A JP S58225215 A JPS58225215 A JP S58225215A
Authority
JP
Japan
Prior art keywords
tube
cable
peripheral surface
transmission efficiency
load transmission
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
JP57106772A
Other languages
Japanese (ja)
Inventor
Katsuya Ono
勝也 大野
Naohiko Suga
菅 尚彦
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP57106772A priority Critical patent/JPS58225215A/en
Publication of JPS58225215A publication Critical patent/JPS58225215A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/26Construction of guiding-sheathings or guiding-tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Flexible Shafts (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To realize the satisfactory transmission of displacement due to force from one end to the other end of the cable inserted in the tube by a structure wherein projections with a specified load transmission efficiency are provided on the inner peripheral surface of the tube substantially made of polybutyrene terephthalate. CONSTITUTION:The control cable 1 consists of the inner cable 3 inserted in the outer tube 2. When force is applied to one end A of the inner cable 3 in order to displace the end A, the other end B is displaced by the length corresponding to the displacement of the end A. In this case, the projections 2'', the load transmission efficiency of which is 40% and higher, are formed on the inner peripheral surface 2' of the outer tube 2. In order to form said projections 2'', raw material substantially consisting of polybutyrene terephthalate is extruded under molten state through a passage 7 between a casing 5 and a mandrel 6, on the outer peripheral surface of which bulges 6A or recesses 6B are provided. Due to the structure as described above, even when the control cable 1 is bent, the inner cable 3 enables to slide smoothly on said inner peripheral surface 2', resulting in accomplishing a desired object.

Description

【発明の詳細な説明】 本発明は、チューブの中に挿通されたケーブルの一端に
加えられる力の変位を他端に伝える、いわゆるコントロ
ールケープμに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called control cape μ which transmits the displacement of a force applied to one end of a cable inserted into a tube to the other end.

添付の第1図(コントロールケーブルの側面図)および
第2図(第1図の■−■断面図)に示すとおり、コント
ロールケープ)v(1)の基本構造ハチューブC2)の
中にケープ/I/C5)が挿通されたものとなっている
。コントロールケープpはその使用に当たって一端(6
)に力を加えて変位させると、他端何が一端に)の変位
に相当する長さだけ変位する機能を発揮する。かかるコ
ントロールケーブルは工業分野における遠隔操作等に広
く有用に採用されている。
As shown in the attached Fig. 1 (side view of the control cable) and Fig. 2 (cross-sectional view taken along /C5) is inserted. When using the control cape p, one end (6
) when a force is applied to displace it, the other end exhibits the function of being displaced by a length corresponding to the displacement of ). Such control cables are widely and usefully employed for remote control and the like in the industrial field.

とこロカ、コントロールケーブルのチューブ(2)は、
一般に合成樹脂およびポリアセターIV 樹脂やポリブ
チレンテレフタレート樹脂でつくられ、その内周面d)
が第2園に示すように円周面からなっているため、コン
トロールケーブルの途中が第1図に示されるように屈曲
した状態で使用されたとき、ケープ)Vφ)が円滑に円
周面のを滑動しないことがある。すなわち、ステイクス
リップ現象を起こすことがあるのである。そのため、一
端(5)に加えられる力を必要以上に大きくしなければ
ならなかったり、変位が波動的に起ったりする。特にポ
リブチレンテVフタv−)l脂の場合、この現象が顕著
に起こる。
Tokoroka, the control cable tube (2) is
Generally made of synthetic resin, polyaceter IV resin or polybutylene terephthalate resin, its inner peripheral surface d)
is made of a circumferential surface as shown in Figure 2, so when the control cable is used with the middle part bent as shown in Figure 1, the cape) may not slide. In other words, a stake-slip phenomenon may occur. Therefore, the force applied to one end (5) must be made larger than necessary, or the displacement may occur in waves. This phenomenon occurs particularly in the case of polybutylene resin.

本発明者は上記現象が起こらないコントロールケーブル
用チューブの提供を目的に検討したところ、実質的にポ
リブチレンテレフタV−Fからなる原料を環状断面を有
するダイ全通して溶融押出する際、前記ダイの内周面に
凸部または凹部を有するダイを使用する゛ことにより、
前記チューブの内周面に突起を有するチューブが得られ
、これをコントロールケープμ用として用いれば、よい
という事実を見い出した。
The inventor of the present invention conducted studies with the aim of providing a tube for a control cable in which the above-mentioned phenomenon does not occur, and found that when melt-extruding a raw material consisting essentially of polybutylene terephthalate V-F through a die having an annular cross section, the By using a die with a convex or concave portion on the inner peripheral surface of the die,
We have found that it is possible to obtain a tube having protrusions on the inner circumferential surface of the tube, and to use this tube for control cape μ.

さらに具体的に製法およびこの製法により得られたチュ
ーブの構造を示す。第3図に環状断面を有するダイ先端
の正面図を示したが、このダイ(4)は基本的には公知
の溶融押出機(図示なし)の押出部分に設けられ、ケー
シング(外径ダイ)C))とマンドレIしく6)とによ
って槽成され、両者の間に環状の通路(7)が形成され
ている。溶融押出しされたポリブチレンテレフタレート
の溶融流は前記通路から吐出されチューブとなるが、本
発明法に使用されるダイのマントVμ端部の表面には、
第6図に示されるように凸部(6A)または凹部(6B
)が設けられている。そのため得られたチューブQ)の
縦断面は第4図に示されるように、その内周面(2)に
突起(2)を有する構造のものとなる。突起の形状、大
きさおよび分布の程度は、本発明の基本的な技術思相、
即ちケーブルを円滑に動かせ得る程度のものとする。例
えば、半円状の突起、相同状の突起、ちるいは同形状の
凹部を複数個設ける。しかし、この形状には例等こだわ
る必要はなく、その程度は荷重伝達効率というパラメー
ターで知るのが最も効率的である。なぜならば、このパ
ラメーターはコントロールケープ々の途中2\”屈曲し
たとき、ケーブルとチューブとの摩擦の程度を示すもの
であるからである。
More specifically, the manufacturing method and the structure of the tube obtained by this manufacturing method will be shown. Fig. 3 shows a front view of the tip of the die having an annular cross section, and this die (4) is basically installed in the extrusion part of a known melt extruder (not shown), and the die (outer diameter die) C)) and the mandrel 6), and an annular passage (7) is formed between them. The melt stream of melt-extruded polybutylene terephthalate is discharged from the passageway to form a tube, and the surface of the mantle Vμ end of the die used in the method of the present invention has
As shown in FIG.
) is provided. Therefore, the longitudinal section of the obtained tube Q) has a structure having a protrusion (2) on its inner circumferential surface (2), as shown in FIG. The shape, size, and degree of distribution of the protrusions are determined based on the basic technical concept of the present invention.
In other words, it should be such that the cable can be moved smoothly. For example, a plurality of semicircular protrusions, homologous protrusions, or recesses of the same shape are provided. However, there is no need to be particular about this shape, and it is most efficient to know the degree from the parameter called load transmission efficiency. This is because this parameter indicates the degree of friction between the cable and the tube when the control cape is bent halfway.

具体的には荷重伝達効率とは、本発明に係るチュー1の
中に力を伝達するためのケープμを挿入してコントロー
ルケープμをつくり、一定の曲げ   (i角度(72
0°)と半径(20cm )を有するようその途中に環
状部分をつくり、一端を固定した状態で他端を引っばっ
たとき固定端に加わるカ(Fl)と他端に加わるカ(F
2)の比率(F+/F’s) X 100%をいう。こ
の比率が大きい程荷重伝達効率がよく、円周面を有する
ポリブチレンテレフタV−)では通常20〜50%であ
る。本発明品にあってはこの荷重伝達効率が40チ以上
であるものとする。
Specifically, the load transmission efficiency is calculated by inserting a cape μ for transmitting force into the chew 1 according to the present invention to create a control cape μ, and bending it at a certain angle (i angle (72
0°) and a radius (20 cm), and when one end is fixed and the other end is pulled, the force (Fl) applied to the fixed end and the force applied to the other end (F
2) Ratio (F+/F's) x 100%. The larger this ratio is, the better the load transmission efficiency is, and for polybutylene terephthalate V-) having a circumferential surface, it is usually 20 to 50%. In the product of the present invention, this load transmission efficiency shall be 40 inches or more.

従ってこの程度以上の荷重伝達効率を与えるような内周
面であれば、いかなる形状のものでもよい。
Therefore, any shape of the inner circumferential surface may be used as long as it provides a load transmission efficiency of this level or higher.

第5図に示したように内周面i)に突起(2′)をラセ
ン状に有するものでもよい。4お本発明に用いられるポ
リブチレンテレフタレートは、コントロールケーブル用
チューブとしての機能を発揮するものであれば、若干共
重合されたもの、混合重合体をも意味する。。
As shown in FIG. 5, the inner circumferential surface i) may have a helical protrusion (2'). 4. The polybutylene terephthalate used in the present invention also means a slightly copolymerized product or a mixed polymer, as long as the polybutylene terephthalate can function as a control cable tube. .

以上のよりに本発明品は、特にポリブチレンテレフタレ
ートからなるチューブの内周面を特定の構造にしたので
、コントロールケープμのケープIしの一端に力を変え
ても、他端にそのカが伝達し、円滑に変位する。
As described above, the product of the present invention has a specific structure for the inner peripheral surface of the tube made of polybutylene terephthalate, so that even if a force is applied to one end of the control cape μ, the force is not applied to the other end. transmission and smooth displacement.

次に本発明法およびその方法で得たコントロールケープ
Iし用チューブの荷重伝達効率について実施例をもって
説明する。
Next, the method of the present invention and the load transmission efficiency of the control cape I tube obtained by the method will be explained using examples.

実施例1〜6、比較例1 公知の溶融押出機および端部円周上に半径1.5朋の深
さで5011Il長の溝を等間隔に6〜8カ所設けた外
径10順の種々のマントv )vからなるチューブ成形
ダイを用い、ポリブチレンテレフタレード樹脂(東L/
PBT1401 )を240−250℃で溶融押出した
後、公知のサイジング方法テ冷却固化し、内周面に3〜
8カ所からなる半径0.6順程度の突起を有した外径6
順、最内径4朋の種々のチューブを成形した。一方比較
例として、通常の方法でポリブチレンテレフタレートの
外径6順、内径4騙の内周面に突起のない一チューブを
成形した。これらのチューブをプッシュプルコントロー
ルケーブルとして用い、その荷重伝達効率を調べた結果
を第1表に示す。
Examples 1 to 6, Comparative Example 1 Various types of known melt extruders and outer diameters in which 6 to 8 grooves with a radius of 1.5 mm in depth and a length of 5011 l were provided at equal intervals on the circumference of the end in the order of 10 Using a tube molding die consisting of cloak v) v, polybutylene terephthalate resin
PBT1401) was melted and extruded at 240-250°C, cooled and solidified using a known sizing method, and the inner peripheral surface was
Outer diameter 6 with 8 protrusions with a radius of about 0.6
In turn, various tubes with an innermost diameter of 4 mm were molded. On the other hand, as a comparative example, a polybutylene terephthalate tube having an outer diameter of 6 mm and an inner diameter of 4 mm and having no protrusions on its inner peripheral surface was molded using a conventional method. These tubes were used as push-pull control cables, and the results of investigating their load transmission efficiency are shown in Table 1.

第1表から明らかなように従来の内周面に突起o’tx
いチューブを用いたプッシュプルコントロールケープ/
L’は荷重伝達効率が30%程度と低く、かつスティッ
クスリップが発生するが、本発明の突起をその内周面に
有するチューブを用いたプッシュプルコントロールケー
ブルは荷重伝達効率が40−以上あり、スティックスリ
ップもないすぐれたチューブである。
As is clear from Table 1, the conventional protrusion o'tx on the inner peripheral surface
Push-pull control cape/
L' has a low load transmission efficiency of about 30% and stick-slip occurs, but the push-pull control cable of the present invention using a tube having protrusions on its inner peripheral surface has a load transmission efficiency of 40- or more. This is an excellent tube with no stick-slip.

第  1  表 実施例4〜6 実施例1〜3と同様にして端部円周上に半径0.2〜0
.7mの高さで50m長の凸部を等間隔に、     
16〜52カ所設けた外径10順の種々のマントμから
なるチューブ成形ダイを用い、ポリブチレンテレフタレ
ートm脂(東しPBT1401)を240〜250℃で
押出し、内周面に16〜62カ所からなる半径0,07
〜0.2順程度の突起を有した外径61III、最内径
4Hの種々のチューブを成形した。これらのチューブを
プッシュプルコントロールケーブルとして用い、その荷
重伝達効率を調べた結果を第2表に示す。
Table 1 Examples 4 to 6 Similar to Examples 1 to 3, a radius of 0.2 to 0 is placed on the end circumference.
.. Convex parts 7m high and 50m long are equally spaced.
Polybutylene terephthalate m fat (Toshi PBT1401) was extruded at 240 to 250°C using a tube molding die with 16 to 52 locations on the outer diameter of various cloak μ in order of 10, and 16 to 62 locations on the inner circumferential surface were extruded. Radius becomes 0,07
Various tubes having an outer diameter of 61III and an innermost diameter of 4H and having protrusions on the order of 0.2 to 0.2 were molded. These tubes were used as push-pull control cables, and the results of examining their load transmission efficiency are shown in Table 2.

第2表から明らかなように荷重伝達効率はチューブ内周
面の突起の形状、大きさおよび分布に若干影響あるが、
突起を内周面に有すればすぐれた荷重伝達効率が得られ
る。
As is clear from Table 2, the load transmission efficiency is slightly affected by the shape, size, and distribution of the protrusions on the inner circumferential surface of the tube.
If the protrusion is provided on the inner peripheral surface, excellent load transmission efficiency can be obtained.

第  2  表 す 実施例7 公知の溶融押出機および端部円周上に半径1.5闘の深
さで200長の溝を1カ所設けた外径10舅厘で、かつ
円周方向に回転するマンドレルを備えたチューブ成形ダ
イを用い、ポリブチレンテレフタレート樹脂(東しPB
T1401)を240〜250℃で溶融押出後、公知の
サイジング方法で冷却固化し、内周面に半径0.6闘程
度で軸方向に20〜60°の角度を持っラセン状の突起
を有した外径6&1jl、内径4酊めチューブを成形し
た。このチューブを用いたプッシュプルコントロールケ
ーブルの荷重伝達効率は60〜65チで、スティックス
リップがまったくないすぐれたチューブであった。
2nd Example 7 A known melt extruder with an outer diameter of 10 mm with one groove of 200 length and a radius of 1.5 mm deep on the end circumference, and rotates in the circumferential direction. Using a tube molding die equipped with a mandrel, polybutylene terephthalate resin (Toshi PB
T1401) was melt-extruded at 240 to 250°C, then cooled and solidified by a known sizing method, and the inner peripheral surface had a helical protrusion with a radius of about 0.6 mm and an angle of 20 to 60 degrees in the axial direction. A tube with an outer diameter of 6 and 1 jl and an inner diameter of 4 was molded. The load transmission efficiency of the push-pull control cable using this tube was 60 to 65 inches, and it was an excellent tube with no stick-slip.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はコントローpケー1/I10側面図であり、そ
して第2図は第1図のn−n断面図を示す。第1゛5図
はグイ先端の正面図を示し、そして第4図は本発明のチ
ューブの横断面図である。第5図は本発明に係るチュー
ブの他の態様を示す部分縦断面図である。 1・・・・・コントロールヶークル 2・・・・・チューブ 3・・・・・ケーブル 4・・・・・ダ  イ 5・・・・・ケーシング 6命1e・マンドレμ 特許出願人 東し株式会社
FIG. 1 is a side view of the controller PK1/I10, and FIG. 2 is a sectional view taken along line nn in FIG. FIG. 15 shows a front view of the goo tip, and FIG. 4 is a cross-sectional view of the tube of the present invention. FIG. 5 is a partial vertical sectional view showing another embodiment of the tube according to the present invention. 1... Control carcle 2... Tube 3... Cable 4... Die 5... Casing 6 Life 1e Mandre μ Patent applicant Toshi Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 1 実質的にポリブチレンテレフタレートからなるチュ
ーブであつ゛て、明細書本文に定義される荷重伝達効率
が40%以上である突起をその内周面に有するコントロ
ールケープp用チューブ2 実質的にポリブチVンテV
フタV−Fからなる原料を、環状断面を有するダイを通
して溶融押出する際、前記ダイの内周面に凸部または凹
部を有するダイを使用することを特徴とするコントロー
ルケーブル用チューブの製繊。
1 A tube for control cape P which is a tube substantially made of polybutylene terephthalate and has a protrusion on its inner circumferential surface that has a load transmission efficiency of 40% or more as defined in the main text of the specification 2 A tube made essentially of polybutylene terephthalate V Nte V
A control cable tube fabrication process characterized in that a die having a convex portion or a concave portion on the inner circumferential surface of the die is used when a raw material made of a lid V-F is melt-extruded through a die having an annular cross section.
JP57106772A 1982-06-23 1982-06-23 Tube for control cable and manufacture thereof Pending JPS58225215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57106772A JPS58225215A (en) 1982-06-23 1982-06-23 Tube for control cable and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57106772A JPS58225215A (en) 1982-06-23 1982-06-23 Tube for control cable and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS58225215A true JPS58225215A (en) 1983-12-27

Family

ID=14442193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57106772A Pending JPS58225215A (en) 1982-06-23 1982-06-23 Tube for control cable and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS58225215A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017040335A (en) * 2015-08-21 2017-02-23 中央発條株式会社 Control cable

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942509U (en) * 1972-07-19 1974-04-15
JPS5670119A (en) * 1979-11-10 1981-06-11 Oiles Ind Co Ltd Cable conduit and manufacture thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942509U (en) * 1972-07-19 1974-04-15
JPS5670119A (en) * 1979-11-10 1981-06-11 Oiles Ind Co Ltd Cable conduit and manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017040335A (en) * 2015-08-21 2017-02-23 中央発條株式会社 Control cable

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