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Showing papers on "Bend radius published in 1995"


Patent
14 Jul 1995
TL;DR: In this article, a guide sleeve is provided for guiding a portion of a fiber optic cable through a turn and insuring that the turn radius of such a cable does not decrease below the minimum bend radius of the cable.
Abstract: A guide sleeve is provided for guiding a portion of a fiber optic cable through a turn and insuring that the turn radius of such portion of the cable does not decrease below the minimum bend radius of the cable. The guide comprises a curved sleeve that has a radius of curvature not less than the minimum bend radius of the fiber optic cable. The sleeve has an interior surface that defines a passageway, and the sleeve defines a slot that communicates with the passageway and extends the entire length of the sleeve such that the sleeve has an open cross-section along the entire length of the sleeve. The slot is configured to allow insertion of a length of a cable through the slot and into the passageway. The slot allows the guide to be removably installed on a cable that already has connectors and boots installed on each end of the cable without affecting the integrity of the connector/boot connection.

74 citations


Journal ArticleDOI
TL;DR: This paper extends the analysis to include short bunch lengths and finds that there is no longer the cancellation for forces both transverse to and in the direction of motion on the beam's transverse motion.
Abstract: Talman [Phys. Rev. Lett. 56, 1429 (1986)] has proposed a novel relativistic effect that occurs when a charged particle beam is bent in the magnetic field from an external dipole. The consequence of this effect is that the space-charge forces from the particles do not exhibit the usual inverse-square energy dependence and some part of them are, in fact, independent of energy. This led to speculation that this effect could introduce significant emittance growth for a bending electron beam. Subsequently, it was shown that this effect's influence on the beam's transverse motion is canceled for a dc beam by a potential depression within the beam (to first order in the beam radius divided by the bend radius). In this paper, we extend the analysis to include short bunch lengths (as compared to the beam pipe dimensions) and find that there is no longer the cancellation for forces both transverse to and in the direction of motion. We provide an estimate for the emittance growth as a function of bend angle, beam radius, and current, and for magnetic compression of an electron bunch.

62 citations


Journal ArticleDOI
M. Hua1, K. Baines1, I.M. Cole1
TL;DR: In this paper, the principle mechanisms of the bending process and some preliminary test results in bending HP30 aluminium plates of 8mm, 10mm and 12mm thickness for single pass bending and multipass bending, using a four-roll model bender.

30 citations


Patent
Masami Saito1
11 Dec 1995
TL;DR: In this article, a pre-connectorized loose tube cable is used to protect the optical fibers as the fibers are being routed from the end of an outer sheath to the fiber distribution shelf.
Abstract: A pre-connectorized loose tube cable protects the optical fibers as the fibers are being routed from the end of an outer sheath to the fiber distribution shelf. The pre-connectorized loose tube cable has a plurality of flexible tubes which are connected to a respective plurality of buffer tubes. The flexible tubes are securely attached to the ends of the buffer tubes and to the pre-connectorized loose tube cable by a capping epoxy and by heat shrinks. The flexible tube has a wall thickness which is greater than the minimum bend radius for the fibers. With such a wall thickness, the fibers are not bent past their minimum bend radius, and thus do not break, even if the flexible tube is bent up to an angle of one hundred eighty degrees.

29 citations


Patent
10 Jul 1995
TL;DR: In this article, at the exit openings of cable ducts guiding devices are provided and configured such that they prevent falling below the critical bending radius and that they widen in the direction of exit and are rounded.
Abstract: A device for the protection of cables laid in switch cabinets, other equipment or the like, in order to prevent bends below a minimum bending radius at the exits of cable ducts or similar equipment and that prevents corresponding damages. At the exit openings of cable ducts guiding devices are provided and configured such that they prevent falling below the critical bending radius and that they widen in the direction of exit and are rounded.

17 citations


Journal Article
TL;DR: In this article, the bending stiffness depends not only on the radius of the bend, the diameter-to-wall-thickness ratio and the internal or external pressure, but also on the length of the bending, the loads due to the surrounding soil and the bending direction.
Abstract: Bending moments on bends in pipelines may cause severe ovalization and stresses, both in longitudinal and circumferential directions. The bending stiffness depends not only on the radius of the bend, the diameter-to-wall-thickness ratio and the internal or external pressure, but also on the length of the bend, the loads due to the surrounding soil and the bending direction. After start of yielding, the bending moment may still increase considerably. For example, it can be shown that for bends with a radius-to-diameter ratio equal to 3, the maximum moment may be 2 or 3 times greater than the moment where first yielding started. Also the rotation capacity (the ability to follow imposed deformation) is many times greater than elastic theory can predict. In this paper, the strnctural behaviour of bends is analyzed. Improved analytical models for elastic design and new analytical models for plastic design are presented. The results of the analytical models are compared with test results and the results of finite element calculations. NOMENCLATURE : Difference in pressure between inside and outside of pipeline P = Pi P u : Earth pressure : Directly transmitted earth pressure : Indirectly transmitted earth pressure (support reaction) : Equivalent earth pressure to transform Q; to a quantity Qd which gives same average plate moments in circumferential direction as Q; does : Radius of nonloaded bend : Radius of bend including additional curvature due to bending : Radius of bend including additional curvature and increased by r for negative bending or decreased by r for positive bending : Average (or mean) radius ~ r = D/2 : Pipe wall thickness : Pipe wall thickness in straight pipe and bend, respectively : Displacement of an element of pipe circumference along circumference and perpendicular to circumference, respectively; also w = L1D/2 : Total increase in curvature in deformation step concerned : Increase in curvature, due to ovalization : Increase in curvature, due to longitudinal yielding : Increase in ovalization, due to longitudinal yielding : Loading angle, bearing angle for Qd and for Q; and Qeq' respectively : Angle of unloaded bend : Change of a : Relative change of a ~ 1] = Llala : 1] associated with Me] and Me2' respectively : Bend characteristic ~ A = tR/r2 : Poisson's ratio : Bend characteristic ~ If/= PR2/Ert : Slope of yield surface

17 citations


Patent
02 Mar 1995
TL;DR: In this article, a customer lead in unit (C) guides an optical fibre transmission line through an aperture (7) in the wall (8a, 8b) of a customer's premises.
Abstract: A customer lead in unit (C) guides an optical fibre transmission line through an aperture (7) in the wall (8a, 8b) of a customer's premises The unit (C) comprises a hollow wall plug (1) which is frictionally engageable within the aperture (7), and a pair of complementary bend control pieces (2), each having a bend control surface (2a) formed with a curved bend control groove (4) whose curvature conforms with minimum bend radius requirements for the optical fibre transmission line The bend control pieces (2) are formed with engagement portions (3) which inter-engage with a complementary engagement portion (1a) formed at one end of the wall plug (1) to grip the wall plug between the two bend control pieces The bend control grooves (4) are positioned so as to define a bend control channel that is contiguous with the hollow interior of the wall plug (1) when the wall plug is gripped by the two bend control pieces (2)

16 citations


Patent
28 Apr 1995
TL;DR: In this paper, a hollow cable guide is used to prevent cable bending beyond a defined min. radius of curvature, to protect the cable from physical damage due to excessive bending, and projections are spaced along the inside face of the guide for retaining the inserted cable.
Abstract: The protection element (1) at least partially encloses the cable (2), for preventing it from being bent beyond a defined min. radius of curvature, to protect the cable from physical damage due to excessive bending. Pref. the protection element is formed in one piece and has a hollow cable guide which is curved in accordance with the min. curvature radius of the cable, with projections (4) spaced along the inside face of the guide for retaining the inserted cable.

10 citations


Journal ArticleDOI
TL;DR: In this article, the effect of temperature on the bend radius that a c-axis-oriented sapphire fiber can withstand was determined for fibers of various diameter, and it was found that the ability of fibers to withstand curvature decreases substantially with time and increasing temperature.
Abstract: The effect of temperature on the bend radius that a c -axis-oriented sapphire fiber can withstand was determined for fibers of various diameter. Bend stress rupture tests were performed for times of 1–100 h and temperatures of 300–1700 °C. Fibers would survive the bend test undeformed, would fracture or would deform. The bend survival radius was determined to be the radius above which no fibers fractured or deformed for a given time-temperature treatment. It was found that the ability of fibers to withstand curvature decreases substantially with time and increasing temperature and that fibers of smaller diameter (40–83 μm) withstood smaller bend radii than would be expected from just a difference in fiber diameter when compared with the bend results of the fibers of large diameter (144 μm). This was probably due to different flaw populations, causing high temperature bend failure for the tested sapphire fibers of different diameters.

9 citations


Journal ArticleDOI
01 Apr 1995
TL;DR: In this paper, a nonperturbative analysis of the field and propagation constant changes in a bent step index planar waveguide is presented, with the aim of investigating limitations on standard perturbation theory.
Abstract: A nonperturbative analysis of the field and propagation constant changes in a bent step index planar waveguide is presented, with the aim of investigating limitations on standard perturbation theory. Mode behaviour for two extreme regimes in which perturbation theory is no longer valid are demonstrated: single-mode guides with very small bend radius ( approximately 1 mm), in which the field in the cladding becomes oscillatory, and large multimode structures bent with a constant radius of curvature. Equations are derived for the dispersion relation whose solutions give the real propagation constant of the bent waveguide.

9 citations


Journal ArticleDOI
TL;DR: In this article, a range of near infrared single-mode passive channel waveguide optical components fabricated in PECVD silica-on-silicon by electron beam irradiation are presented.
Abstract: Results are presented for a range of near infrared single-mode passive channel waveguide optical components fabricated in PECVD silica-on-silicon by electron beam irradiation. The devices include S-bends, Mach-Zehnder interferometers, Y-junction tree-structured splitters, and directional couplers. It is shown that low loss may be obtained through appropriate choice of waveguide bend radius and fabrication parameters; fiber-device insertion losses of /spl ap/2 dB and /spl ap/1 dB are achieved for 1/spl times/8 splitters and 3-dB directional couplers, respectively, at /spl lambda/=1.525 /spl mu/m. >

Journal ArticleDOI
TL;DR: In this article, the cover materials of ultrathin ceramic insulation not thicker than 3-6 /spl mu/m were suggested for use in coil processing and critical properties measurements as a function of the cover thickness for insulated Bi-2223/Ag tapes as well as some characteristics of the insulating cover are presented.
Abstract: The cover materials of ultrathin ceramic insulation not thicker than 3-6 /spl mu/m were suggested for use in coil processing. This cover was used for Bi-2223/Ag composite tapes without aggravation of their critical properties. High heat resistance (up to 840/spl deg/C) and small destroy bend radius permitted one to use "wind-and-react" as well as "react-and-wind" methods for coil fabrication. Results of critical properties measurements as a function of the cover thickness for insulated Bi-2223/Ag tapes as well as some characteristics of the insulating cover are presented. >

Journal ArticleDOI
TL;DR: In this article, the mode coupling behavior inside a bent hollow waveguide is discussed, and experimental results for modal power coupling using single fundamental Gaussian mode beam inputs are presented.

Patent
31 Aug 1995
TL;DR: The pipe bend can be in two parts which are detachably connectable together at a connecting point between the inlet and outlet as discussed by the authors, and a two-part cast replaceable wear member can be fitted inside the pipe bend.
Abstract: The pipeline system has a round cross-section. The pipe bend has in the inlet a circular cross-section but widens out in a continuation from a circular to a rectangular cross-section so that the passage area is enlarged. The cross-section reduces again to a circular shape towards the outlet of the pipe bend. The pipe bend can be in two parts which are detachably connectable together at a connecting point between the inlet and outlet. A two-part cast replaceable wear member can be fitted inside the pipe bend.

Patent
10 Feb 1995
TL;DR: In this article, a track wheel with a self supporting track is mounted on a pair of load bearing rollers, and the track consists of a continuous resilient band having a preformed transverse and longitudinal curvature for resisting flattening to a larger radius under load but substantially free to bend to a smaller radius of curvature.
Abstract: A track wheel having a self supporting track (1) mounted on a pair of load bearing rollers (2, 3). The track (1) comprises a continuous resilient band having a preformed transverse and longitudinal curvature for resisting flattening to a larger radius under load but substantially free to bend to a smaller radius of curvature for passage around the rollers. The radius (8) of transverse curvature is made approximately equal to the radius (14) of said rollers, and the radius (15) of longitudinal curvature is made not greater than 20 times the radius (8) of the transverse curvature to provide a short track wheel having a high load capacity and large surface contacting area or footprint.

Journal ArticleDOI
TL;DR: In this paper, the right-angle multi-mitred composite pipe bends have been measured while subjected to in-plane flexure, out-of-plane and internal pressure, each type of loading being applied separately.

Patent
21 Feb 1995
TL;DR: In this paper, a bending radius holding means is proposed to hold the bending radius of the connecting extra length to a specified radius or above along winding loci or the connecting surplus length between a front surface part and a rear surface part.
Abstract: PURPOSE: To make it possible to house a connecting extra length while holding a specified bending radius or above by disposing a bending radius holding means for holding the bending radius of the connecting extra length to a specified radius or above along winding loci or the connecting surplus length between a front surface part and a rear surface part. CONSTITUTION: An aperture fastener 12 is composed of a projecting part 14 disposed in the front surface part 13 and a recessed part 16 which is disposed in the rear surface part 15 arranged to face this front surface part 13 and fits onto the projecting part 14. The central part of the front surface part 13 and the rear surface part 14 is provided with the bending radius holding means 19 holding the bending radius of the connecting extra length 17 to the specified radius or above by winding the connecting extra length 17 on the outer side thereof. The bending radius holding means 19 is a fastener of the constitution similar to the constitution of a aperture fastener 12 disposed on the surface on the inside where the front surface part 13 and the rear surface part 15 face each other. The means described above is formed to a circular shape. Then, the connecting extra length 17 is bent and housed while the specified or larger bending radius is assured simply by winding the connecting extra length around the bending radius holding part 19. COPYRIGHT: (C)1996,JPO

Patent
07 Jul 1995
TL;DR: In this paper, the optimum torque for securing a U-bolt assembly calculated according to the formula T=UL·d·K·LF, where T = optimum torque, UL is a calculated value for the ultimate tensile load of one u-bolt leg, d is the diameter of the threaded end of one U-branch leg, K is a torque coefficient of friction associated with the Ubolt assembly, and LF is a chosen load safety factor.
Abstract: A method of determining the optimum torque for securing a U-bolt assembly calculated according to the formula T=UL·d·K·LF, where T is the optimum torque, UL is a calculated value for the ultimate tensile load of one U-bolt leg, d is the diameter of the threaded end of one U-bolt leg, K is a torque coefficient of friction associated with the U-bolt assembly, and LF is a chosen load safety factor. A tool used in securing the U-bolt assembly includes at least one surface having torquing indicia located thereon and a radius for testing the bend radius on the U-bolt. The torquing indicia includes U-bolt assembly designation data and a corresponding optimum torque value.

Patent
03 May 1995
TL;DR: In this article, a single insert is provided with a plurality of curved channels extending therethrough, which allows passage of a relatively large number of cables through a relatively small area of a pressure vessel wall, and the curvature of the channels prevents a straight line path for gamma radiation.
Abstract: A single insert is provided with a plurality of curved channels extending therethrough. Such insert allows passage of a relatively large number of cables through a relatively small area of a pressure vessel wall, and the curvature of the channels prevents a straight line path for gamma radiation. The curvature of the channels (i.e. their radius) exceeds the design minimum bend radius for cables that will be passed through the insert. The ends of the insert are conical in shape to provide increased spacing for gland nuts secured in the ends of the channels.

Journal ArticleDOI
TL;DR: In this paper, a numerical analysis has been performed on developing turbulent flow in a square-sectioned 180 deg bend, where straight ducts of 31 hydraulic diameter long are attached to the inlet and outlet planes of the bend.
Abstract: A numerical analysis has been performed on developing turbulent flow in a square-sectioned 180 deg bend. The ratio of bend mean radius of curvature to hydraulic diameter is 3.35 and straight ducts of 31 hydraulic diameter long are attached to the inlet and outlet planes of the bend. In calculation, an algebraic stress model was adopted in order to predict Reynolds stresses precisely, and a boundary fitted coordinate system was introduced to briefly set boundary conditions. Calculated results were compared with the experimental data available. Moreover, the transition from the secondary flow of the second kind to that of the first kind and vice versa are examined. It was found that the present method predicted the mean flow velocity with a minimum at 90 deg of bend without much discrepancy. In a straight duct of a bend inlet, the secondary flow of the second kind transforms into that of the first kind at 1.0∼1.6 hydraulic diameter upstream from the bend inlet. In contrast, in a straight duct of a bend outlet, the secondary flow of the first kind is accelerated downstream from bend outlet by increasing the pressure gradient of the square cross section. After this acceleration, the secondary flow of the first kind decays and gradually transforms into the secondary flow of the second kind.

Patent
12 Jul 1995
TL;DR: In this paper, the authors describe a reel for optic fibres, cables, or conductors with an enclosed winding chamber between two rims, and a peripheral groove whose width and height are such that the cable or conductor can be held.
Abstract: The reel for optic fibres, cables or conductors has an enclosed winding chamber between two rims. There is a grooved flange (nf) on an outer end and between this and the winding chamber rim (wkr). There is a peripheral groove (rn) whose width and height are such that the cable or conductor can be held. There is a longitudinal hole (l) extending from the base of the chamber to this peripheral groove. The length of the hole is sufficient for the passage through of the cable or conductor at its minimum bending radius. There is at least one lead-out slot (as1, as2) in the edge of the peripheral groove.

Patent
20 Jan 1995
TL;DR: In this paper, the shape accuracy of an open pipe was improved by moving to the steel bans edge side than the positions determined from a designed value of the open pipe cross section.
Abstract: PURPOSE:To improve shape accuracy of an open pipe before welding and to stabilize the welding quality by improving shape accuracy of the open pipe of the fin pass inlet side in the manufacture of the resistance welded steel tube for which a forming roll is used for a wide range of the outside diameter. CONSTITUTION:A large bending radius area 4 of the central part and two bending areas of small radius areas 5 of both edges are provided in a central bending area 3 of roll calibers of upper and lower rolls 1 and 2 of breakdown rolls and the positions of the small bending radius areas 5 of both edges are provided by moving to the steel bans edge side than the positions determined from a designed value of an open pipe cross section.

Patent
09 Oct 1995
TL;DR: In this paper, a half-split type bending mold is used to bend a thermoplastic resin pipe to obtain a different bending radius of curvature, bending angle and bending range.
Abstract: PURPOSE:To provide a bending processing method for a thermoplastic resin pipe high in productivity generating no burr or wrinkles caused by the insertion of a mold in a conventional processing method, capable of obtaining a bent pipe different in the bending radius of curvature, bending angle and bending range by the same mold and capable of directly cooling the thermoplastic resin pipe. CONSTITUTION:A half-split type bending mold 10 wherein a flexible shaft 3 is passed through a large number of plates having half parts of which the shape corresponds to the outer shape of a thermoplastic resin pipe P provided thereto at an almost equal interval is used and the heated thermoplastic resin pipe P is held from both sides thereof by the half-split type bending mold 10 and, in this state, the bending mold 10 is bent to bend the thermoplastic resin pipe P and this pipe P is cooled in a bent state to obtain a bent pipe.

Patent
10 Mar 1995
TL;DR: In this article, a probe pin 4 having a semispheric front end is slid in a stainless guide pipe 5 and is brought into contact with the surface of the terminal of an object to be measured.
Abstract: PURPOSE:To accurately measure an object to be measured by constituting a probe pin which has a semispheric front end, the curvature of which has a specific proportion against the diameter of the pine, and can cope with any recess and projection. CONSTITUTION:A probe pin 4 having a semispheric front end is slid in a stainless guide pipe 5 and is brought into contact with the surface of the terminal of an object to be measured. When the total length of the pin 4 is 30-100mm, the pin 4 must have a minimum bend radius of about 30mm and must withstand 30,000-50,000 times of sliding operations. No other material except a metallic material having a Young's modulus of 210,000-kgf/mm and tensile strength of >=60kgf/mm can withstand such repetitive operations. The preferable diameter of the pin 4 is 0.01-0.5mm and the preferable curvature of the semispheric front end is 1/101/2 of the diameter. In addition, the metallic material must have electric conductivity of >=330% (IACS).

Patent
03 Aug 1995
TL;DR: In this paper, the authors proposed to utilize a rolling bearing widely, even when the installation space is narrow in a radius direction and/or axis direction, to prevent the contact between a connection cable having no small bend radius and rotating peripheral parts and compensate the length of the connection cable.
Abstract: PROBLEM TO BE SOLVED: To utilize a rolling bearing widely, even when the installation space is narrow in a radius direction and/or axis direction, prevent the contact surely between a connection cable having no small bend radius and rotating peripheral parts and compensate the length of the connection cable. SOLUTION: In the rolling bearing with a sensor for detecting an operation state, a sensor housing 8 having the sensor has a small width beyond at least one range and the connection cable 13 of the sensor 7 is drawn out from the wide part of the sensor housing 8 in the periphery direction of the rolling bearing. COPYRIGHT: (C)1996,JPO

Patent
25 Jul 1995
TL;DR: In this paper, a flanged lining pipe is modeled according to the cross-sectional shape along the center of the pipe, and at every value of the bending radius of the bent part, the max. stress value in the bent pipe at a time when a cooling/heating cycle is generated is calculated.
Abstract: PURPOSE:To enable the setting of quality and the shortening of an evaluation time in a planning stage. CONSTITUTION:A flanged lining pipe is modeled (S1) according to the cross-sectional shape along the center thereof. Subsequently, at every value of the bending radius of the bent part in the modeled cross-sectional shape, the max. stress value in the bent pipe at a time when a cooling/heating cycle is generated is calculated (S2, S3) using structural analysis. From the relation between the material strength value obtained by performing the tensile test of a vinyl chloride resin pipe and the calculated max. stress value, the optimum value of a bending radius is calculated (S4-S6).

Patent
12 Sep 1995
TL;DR: In this paper, an optical fiber is formed by drawing a preform and wound around a cylindrical bobbin, and the fiber is hardened by cooling in the wound state.
Abstract: PURPOSE:To obtain an optical fiber free from internal stress and capable of keeping sufficient reliability even at a small bend radius. CONSTITUTION:An optical fiber 5 formed by drawing a preform 1 is heated at the part to be subjected to bending work to the softening temperature in a heating furnace 7. The softened part 10 of the optical fiber is brought into contact with a cylindrical bobbin 8 and the optical fiber 5 is wound around the bobbin 8 without applying a tension to the optical fiber. The bent optical fiber is hardened by cooling in the wound state. Since there is no causation of stress in the optical fiber even at a small bend radius, the reliability of a bent optical fiber having small bend radius can be improved. The optical fiber is useful for the manufacture of a small-sized optical fiber amplifier, etc., having high reliability.

Patent
05 Oct 1995
TL;DR: In this article, the main leaf is attached to the vehicle chassis via a stem which is designed to bend elastically, and the end of the stem is able to pivot elastically and to slide longitudinally in its mount.
Abstract: The spring has a main leaf, which leads to an eye (5) particularly at the front of the spring in the direction of travel, and whose other end is connected to the vehicle chassis via a stem which is bent upwards. The stem is bent at an angle of less than 90 degrees with respect to the main leaf, when the spring is unloaded. With increasing spring loading the stem can adopt a position corresponding to a 90 deg. bend. The bending region is designed to bend elastically, and the end of the stem is able to pivot elastically, and to slide longitudinally in its mount. The stem can also be bent almost parallel to the main leaf, and the bending radius can have a value of approximately half the length of the linear portion of the stem.

Patent
21 Nov 1995
TL;DR: In this article, the cable is corrected on this side of the inlets of the pipe lines by the guide pipes 10, and the cable C is bent on the side of pipe line inlets, and is not buckled by exceeding an allowable bend radius.
Abstract: PURPOSE:To prevent buckling of a cable when the cable is laid by cable laying devices arranged with respective manholes. CONSTITUTION:Cable laying devices 1 to lay a cable while sandwiching the cable C by left and right rotary bodies, are arranged with respective manholes M1 to M4. Cable buckling preventive guide pipes 10 which are composed of a cylindrical part inside which the cable is inserted and a diametrically expansive part whose diameter is gradually expanded by being formed on one end of this cylindrical part and in which the other end side of the cylindrical part is formed as a fixing part to be fixed to an inlet of a pipe line, are fixed to inlets of cable laying pipe lines K1 to K3 arranged in the respective manholes. The cable laying devices 1 are arranged in positions in close vicinity to the diametrically expansive parts of the guide pipes 10, and the cable C is laid. The cable is corrected on this side of the inlets of the pipe lines by the guide pipes 10, and the cable C is bent on this side of the pipe line inlets, and is not buckled by exceeding an allowable bend radius.

Patent
23 Jun 1995
TL;DR: In this article, the optical signal cable is wound by the bending radius corresponding to at least the radius of the winding part 2 of the housing part 100, which is a cylindrical shape and its one surface is formed as a surface to be mounted on a transmitter and a receiver.
Abstract: PURPOSE:To prevent the damage arising from the physical properties intrinsic to an optical signal cable that its mechanical strength and to improve installation workability by providing the above fixture with an optical signal cable housing part and an optical signal cable winding part. CONSTITUTION:The optical signal cable housing part 100 is formed as a cylindrical shape and its one surface is formed as a surface to be mounted on a transmitter and a receiver. A mounting seat 1a is formed at its center. The surface facing the mounting surface 1 is opened and the optical signal cable winding part 2 is formed therein. The winding part 2 has a cylindrical shape having a radius larger than the min. bending radius of the optical signal cable. As a result, the optical signal cable is wound by the bending radius corresponding to at least the radius of the winding part 2 of the housing part 100. The outer periphery of the housing part 100 is provided with plural pieces of U-shaped slits 3a and, therefore, the arbitrary selection of the inlet and outlet of the optical signal cable to the housing part 100 is possible. The easy fine adjustment of the positions of these slits 3a is possible as well.