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WO2019026219A1 - Structure d'extrémité de câble, structure de connexion de câble et endoscope - Google Patents

Structure d'extrémité de câble, structure de connexion de câble et endoscope Download PDF

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Publication number
WO2019026219A1
WO2019026219A1 PCT/JP2017/028139 JP2017028139W WO2019026219A1 WO 2019026219 A1 WO2019026219 A1 WO 2019026219A1 JP 2017028139 W JP2017028139 W JP 2017028139W WO 2019026219 A1 WO2019026219 A1 WO 2019026219A1
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WO
WIPO (PCT)
Prior art keywords
cable
region
coaxial cable
core wire
wire
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.)
Ceased
Application number
PCT/JP2017/028139
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English (en)
Japanese (ja)
Inventor
敏生 虫明
孝典 関戸
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.)
Olympus Corp
Original Assignee
Olympus Corp
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 Olympus Corp filed Critical Olympus Corp
Priority to PCT/JP2017/028139 priority Critical patent/WO2019026219A1/fr
Publication of WO2019026219A1 publication Critical patent/WO2019026219A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances

Definitions

  • the present invention relates to a cable end structure, a cable connection structure in which the cable end structure is connected to a substrate, and an endoscope.
  • a medical endoscope for example, there is an endoscope equipped with an imaging device in which an imaging device such as a CCD is built in at the tip of an insertion portion inserted into a subject. By deeply inserting the insertion portion into the body, a lesion can be observed. Further, by using a treatment tool in combination as needed, an inspection and treatment in the body can also be performed.
  • an imaging device such as a CCD
  • the image information captured by the imaging device is converted into an electrical signal and transmitted to a signal processing device via a signal line, and the transmission signal is transmitted by the signal processing device.
  • the imaging device in the endoscope and the signal processing device are connected by a collective cable obtained by bundling a plurality of cables for transmission of an image signal, transmission of a clock signal, supply of drive power to the imaging device, etc. ing.
  • connection part at the time of stress being added to the cable by removing the inner insulator and the outer insulator and fixing the exposed part where the core wire and the shield wire are exposed by the fixing part made of sealing resin. Reduce the influence of stress on the cable and maintain the connection reliability between the cable and the circuit board.
  • the inner and outer insulators on the connection end face side are removed to expose the core wire outer circumference and the remaining shield wire entire circumference, the sealing resin is filled in the mold while tension is applied to the core wire and shield wire. Even if the fixing portion is formed by curing, there is a possibility that the shield wire may be displaced.
  • the present invention has been made in view of the above, and reduces the influence of stress on the connection portion when the cable is stressed, and improves the positional accuracy of the core wire and the shield wire exposed on the end face. It is an object of the present invention to provide a cable end structure, a cable connection structure, and an endoscope which can maintain the reliability of the connection between the coaxial cable and the substrate.
  • a cable end structure comprises a conductive core wire, an inner insulator covering the outer periphery of the core wire, and the outer periphery of the inner insulator. And at least one coaxial cable having a conductive shielding wire to be covered and an external insulator covering the outer periphery of the shielding wire, and a fixing portion covering one end of the coaxial cable, the coaxial in the fixing portion
  • the cable has a first region including an end face, and a second region adjacent to the first region, in which the inner insulator and the outer insulator are removed to expose the core wire and the shield wire.
  • a third region on the proximal side of the second region, and the fixing portion includes the core wire and the shield wire exposed in the second region, and the first region and the third region.
  • the external insulator is removed from the first region of the coaxial cable, and the exposed shield wire is bonded to the fixing portion. It is characterized by
  • the inner insulator in the first region of the coaxial cable, the inner insulator is removed and the inner surface of the core wire and shield wire exposed is bonded to the fixing portion. It is characterized by
  • the fixing portion is formed of a resin.
  • the fixing portion is made of a mold portion having a groove portion for mounting the coaxial cable formed thereon and a resin, and is mounted on the mold portion. And the core wire and the shield wire exposed in the second region, and the first region, the third region, and the resin fixing portion covering the coaxial cable. It adheres to the said model part, It is characterized by fixing.
  • the mold portion has two opposing wall portions, and the wall portion is filled with a resin which is a material of the resin fixing portion. It is characterized by
  • the cable end structure according to the present invention is characterized in that, in the above-mentioned invention, the core line exposed to the end face of the fixing portion and an electrode portion formed by plating on the shield line.
  • a cable connection structure includes: a substrate on which a connection electrode is formed; and the cable end structure according to the above, in which the electrode portion is connected to the connection electrode via an electroconductive member.
  • the cable end structure is characterized in that the electrode portion is end-face connected to the connection electrode through a conductive member.
  • a substrate having a connection electrode formed thereon, the cable end structure according to the above, in which the electrode portion is connected to the connection electrode via a conductive member,
  • An imaging unit including an imaging device connected to the formed electrode is characterized by including an insertion portion provided at the tip.
  • the core wire and the shield wire exposed in the second region are fixed by the fixing portion, whereby the core wire is connected to the substrate and then the core wire of the coaxial cable is subjected to a tensile load.
  • the shield wire in the first region which is the connection end face side, while preventing the connection between the end face of the connection and the connection electrode of the board from being broken and maintaining the reliability of the connection between the cable and the board Because the inner insulator and / or the outer insulator remain, it is possible to prevent displacement of the shield wire.
  • FIG. 1 is a view schematically showing an entire configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view showing a cable end structure used in the endoscope according to the first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a cable connection structure according to a first embodiment of the present invention in a plane parallel to and perpendicular to the cable axial direction.
  • 4 is a perspective view of the coaxial cable within the cable end structure of FIG. 2;
  • FIG. 5 is a perspective view illustrating the manufacture of the cable end structure of FIG.
  • FIG. 6 is a perspective view showing a cable end structure according to a first modification of the first embodiment of the present invention.
  • FIG. 1 is a view schematically showing an entire configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view showing a cable end structure used in the endoscope according to the first embodiment of the present invention.
  • FIG. 3
  • FIG. 7 is a cross-sectional view of a cable connection structure according to a first modification of the first embodiment of the present invention in a plane parallel to and perpendicular to the cable axial direction.
  • FIG. 8 is a perspective view of a coaxial cable within the cable end structure of FIG.
  • FIG. 9 is a perspective view illustrating the manufacture of the cable end structure of FIG.
  • FIG. 10 is a perspective view showing a cable end surface structure according to a second embodiment of the present invention.
  • 11 is a perspective view of the coaxial cable of the cable end structure of FIG.
  • FIG. 12 is a perspective view illustrating the manufacture of the cable end structure of FIG.
  • FIG. 13 is a perspective view showing a cable end surface structure according to a third embodiment of the present invention.
  • FIG. 14 is a perspective view illustrating the manufacture of the cable end structure of FIG. 13;
  • FIG. 15 is a perspective view illustrating the manufacture of the cable end structure of FIG. 13;
  • FIG. 16 is a perspective view for explaining a mold portion of a cable end face structure according to a first modification of the third embodiment of the present invention.
  • FIG. 17 is a perspective view showing a cable end face structure according to a fourth embodiment of the present invention.
  • FIG. 18 is a perspective view illustrating the manufacture of the cable end structure of FIG. 17;
  • FIG. 19 is a perspective view illustrating the manufacture of the cable end structure of FIG. 17;
  • FIG. 1 is a view schematically showing an entire configuration of an endoscope system 50 according to a first embodiment of the present invention.
  • an endoscope system 50 according to the present embodiment includes an endoscope 51 introduced into a subject, imaging an inside of the subject to generate an image signal of the inside of the subject, An information processing apparatus 52 that performs predetermined image processing on an image signal captured by the endoscope 51 and controls each part of the endoscope system 50, a light source device 53 that generates illumination light of the endoscope 51, and information processing And a display device 54 for displaying an image of the image signal after the image processing by the device 52.
  • the endoscope 51 has an insertion portion 55 to be inserted into the subject, an operation portion 56 on the proximal end side of the insertion portion 55 and held by the operator, and a flexible universal that extends from the operation portion 56. And a code 57.
  • the insertion portion 55 is realized using an illumination fiber (light guide cable), an electric cable, an optical fiber, and the like.
  • the insertion portion 55 has a distal end portion 55a incorporating an imaging unit described later, a bendable bending portion 55b formed of a plurality of bending pieces, and flexibility provided on the proximal end side of the bending portion 55b. And a flexible tube 55c.
  • the distal end 55a includes an illumination unit that illuminates the inside of the subject via an illumination lens, an observation unit that images the inside of the subject, an opening that communicates the treatment tool channel, and an air supply / water supply nozzle (not shown) Is provided.
  • the operation unit 56 includes a bending knob 56a that bends the bending unit 55b in the vertical and horizontal directions, a treatment tool insertion unit 56b in which a treatment tool such as a biological forceps or a laser knife is inserted into a body cavity of a subject, and an information processing apparatus And 52, a plurality of switch units 56c for operating peripheral devices such as a light source device 53, an air supply device, a water supply device, and a gas supply device.
  • the treatment tool inserted from the treatment tool insertion portion 56b is exposed from the opening at the tip of the insertion portion 55 through the treatment tool channel provided inside.
  • the universal cord 57 is configured using an illumination fiber, a cable or the like.
  • the universal cord 57 is branched at the proximal end, and one branched end is the connector 57a, and the other proximal end is the connector 57b.
  • the connector 57 a is removable from the connector of the information processing device 52.
  • the connector 57 b is detachable from the light source device 53.
  • the universal cord 57 propagates the illumination light emitted from the light source device 53 to the tip 55 a via the connector 57 b and the illumination fiber.
  • the universal cord 57 transmits an image signal captured by the imaging unit to the information processing apparatus 52 via the cable and the connector 57a.
  • the information processing device 52 performs predetermined image processing on the image signal output from the connector 57 a and controls the entire endoscope system 50.
  • the light source device 53 is configured using a light source that emits light, a condensing lens, and the like.
  • the light source device 53 emits light from the light source under the control of the information processing device 52, and illuminates the inside of the subject as the subject to the endoscope 51 connected via the connector 57b and the illumination fiber of the universal cord 57. Supply as light.
  • the display device 54 is configured using a display or the like using liquid crystal or organic EL (Electro Luminescence).
  • the display device 54 displays various information including an image on which predetermined image processing has been performed by the information processing device 52 via the video cable 54 a. Thereby, the operator can determine the observation and the property of the desired position in the subject by operating the endoscope 51 while looking at the image (in-vivo image) displayed by the display device 54.
  • FIG. 2 is a perspective view showing a cable end structure 10 used in the endoscope 51 according to the first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the cable connection structure 100 according to the first embodiment of the present invention in a plane parallel to and perpendicular to the cable axial direction.
  • FIG. 4 is a perspective view of the coaxial cable 1 within the cable end structure 10 of FIG.
  • FIG. 5 is a perspective view illustrating the manufacture of the cable end structure 10 of FIG.
  • the cable connection structure 100 is connected to a solid-state imaging device (not shown) via a substrate 20 (see FIG. 3) described later, and is used in the endoscope 51 as an imaging unit.
  • the cable end structure 10 includes a coaxial cable 1 and a fixing portion 6 made of resin and covering one end of the coaxial cable 1. Moreover, on the connection end surface S with the board
  • a structure in which three coaxial cables 1 are fixed by one fixing portion 6 will be described as an example, but the present invention is not limited to this, and one or more Any coaxial cable 1 may be used.
  • the coaxial cable 1 includes a conductive core wire 2, an inner insulator 3 covering the outer periphery of the core wire 2, a shield wire 4 covering the outer periphery of the inner insulator 3, and an outer insulator covering the outer periphery of the shield wire 4. And 5 are arranged concentrically.
  • the coaxial cable 1 in the fixing portion 6 has a first area R1 on the connection end surface S side, a second area R2 adjacent to the first area R1, and a second end adjacent to the base end of the second area R2. And 3 regions R3.
  • the external insulator 5 is removed to expose the shield wire 4 and to be in contact with the fixing portion 6.
  • the internal insulator 3 and the external insulator 5 are removed, and the core wire 2 and the shield wire 4 are exposed.
  • the upper part of the shield wire 4 in the second region R2 is removed in order to remove the internal insulator 3 around the entire core wire 2 to form a semi-cylindrical shape.
  • the inner insulator 3 and the outer insulator 5 are not removed.
  • the fixing portion 6 is made of an electrically insulating resin, and is a resin having adhesiveness to the metal that is the material of the core wire 2 and the shield wire 4, for example, copper, silver-plated copper, copper-coated steel, tin-plated copper, etc. Is preferred.
  • the resin having adhesiveness means, for example, other resins excluding the fluorine-based resin.
  • solid part 6 is formed in the shape of a rectangular parallelepiped, if connection end face S is a plane, it may be cylindrical, elliptic cylindrical, or the like.
  • the cable end structure 10 temporarily fixes the coaxial cables 1 in a state in which the coaxial cables 1 are aligned with the cable array member, and removes the external insulator 5 in the first region R1 and the second region R2 with a laser processing machine or the like. Thereafter, the laser is irradiated in a state where the shield wire 4 and the internal insulator 3 in the second region R2 are masked so that approximately half remains, and the upper shield wire 4 and the internal insulator 3 are removed. Thereafter, the output of the laser is changed, the lower internal insulator 3 is removed, and the processing of the second region R2 is completed (see FIG. 4).
  • a sealing die is attached to the portion to be the first region R1, the second region R2 and the third region R3 of the coaxial cable 1, and the resin is filled in the sealing die and cured to form a sealing die.
  • the fixing portion 6 is cut so that the end of the coaxial cable 1 is exposed, to form a connection end face S where the end faces of the core wire 2, the internal insulator 3 and the shield wire 4 are exposed (see FIG. 5). ).
  • the coaxial cable 1 is processed and the fixing portion 6 is formed in a state where the coaxial cables 1 are aligned by two cable arranging members in order to arrange the coaxial cables 1 in the fixing portion 6 at a predetermined interval. Is preferred.
  • the core wire 2, the internal insulator 3, and the shield wire 4 are exposed, and the electrode portion 7 and the electrode portion 8 are formed on the exposed core wire 2 and shield wire 4.
  • the electrode portion 7 and the electrode portion 8 are preferably formed by electrolytic plating, electroless plating or the like.
  • connection electrode 21 connected to the electrode portion 7 and a connection electrode 22 connected to the electrode portion 8 are formed on the connection surface of the substrate 20 with the coaxial cable 1.
  • the connection electrodes 21 are formed in the same number as the core wires 2 at positions facing the core wires 2 in the cable end structure 10, and the connection electrodes 22 are formed linearly at positions facing the plurality of shield wires 4, Together with the shield wire 4 of FIG.
  • the connection electrode 22 may have a shape other than a straight line, such as a curve, as long as the connection electrode 22 has a shape facing the plurality of shield lines 4.
  • connection bumps 23 formed of solder, gold (Au) or the like.
  • a reinforcing resin 30 such as an epoxy resin is filled and applied between the connection end surface S of the cable connection structure 100 and the connection surface of the substrate 20 to further ensure the connection between the two.
  • core wire 2 and shield wire 4 whose entire circumference is exposed in second region R2 can be fixed by fixing portion 6 made of resin having good adhesion to core wire 2 and shield wire 4, and thus coaxial cable 1 Even when an external force is applied, the fixing portion 6 can firmly hold the core wire 2 and reliably prevent the core wire 2 from coming off. Further, in the first region R1 on the connection end face S side, since the shield wire 4 is supported by the internal insulator 3 together with the core wire 2, positional deviation can be prevented even when the fixing portion 6 is formed. .
  • the external insulator 5 in the first region R1 is removed, but the external insulator 5 may be left.
  • FIG. 6 is a perspective view showing a cable end structure 10A according to a first modification of the first embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of a cable connection structure 100A according to the first modification of the first embodiment of the present invention in a plane parallel to and perpendicular to the cable axial direction.
  • FIG. 8 is a perspective view of a coaxial cable 1A in the cable end structure 10A of FIG.
  • FIG. 9 is a perspective view for explaining the manufacture of the cable end structure 10A of FIG.
  • connection end face S side of the coaxial cable 1A in the fixed portion 6A is the second region R2, and the first region R1 is removed.
  • the cable end structure 10A temporarily fixes the coaxial cable 1 in a state where the coaxial cable 1 is aligned with the cable array member, and as shown in FIG. , The second region R2 and the third region R3.
  • a sealing die is attached to the portion to be the first region R1, the second region R2 and the third region R3 of the coaxial cable 1, and the resin is filled in the sealing die and cured to form a sealing die.
  • the fixing portion 6A is cut so that the second region R2 is exposed, to form a connection end face S where the end faces of the core wire 2 and the shield wire 4 are exposed (see FIG. 9).
  • FIG. 8 shows the structure of the coaxial cable 1 in the fixed portion 6A, and on the connection end face S side, the internal insulator 3 and the external insulator 5 are removed, and the core wire 2 and the shield wire 4 are exposed Region R2 of 2 is obtained.
  • connection end face S On the connection end face S, as shown in FIGS. 6 and 9, the core wire 2 and the shield wire 4 are exposed, and the electrode portion 7 and the electrode portion 8 are formed on the exposed core wire 2 and shield wire 4 There is.
  • the sealed type When the sealed type is attached to the coaxial cable 1A shown in FIG. 8 without forming the first region R1 in which the shield wire 4 is supported by the internal insulator 3, and the resin is filled in the sealed type and cured.
  • the cable end structure 10A manufactured as described above does not cause positional displacement, and to the connection portion when stress is applied to the coaxial cable 1A. Can reduce the effects of stress.
  • FIG. 10 is a perspective view showing a cable end face structure 10B according to a second embodiment of the present invention.
  • 11 is a perspective view of a coaxial cable 1B in the cable end structure 10B of FIG.
  • FIG. 12 is a perspective view illustrating the manufacture of the cable end structure 10B of FIG.
  • the coaxial cable 1B in the fixed portion 6B has the first region R1 where the inner insulator 3 is removed and the inner circumferences of the core wire 2 and the shield wire 4 are exposed; And the second region R2 where the core wire 2 and the shield wire 4 are exposed by removing the outer insulator 5, and a third region R3 consisting of the core wire 2, the inner insulator 3, the shield wire 4 and the outer insulator 5; And.
  • the core wire 2, the shield wire 4 and the external insulator 5 are exposed, and on the exposed core wire 2 and shield wire 4, the electrode portion 7 and the electrode portion 8 are formed.
  • the second embodiment it is possible to reduce the influence of stress on the connection portion when stress is applied to coaxial cable 1B, and shield wire 4 is externally insulated in first region R1 on the connection end face S side. Since it is supported by the body 5, it is possible to prevent positional deviation when forming the fixing portion 6B.
  • the fixed portion 6B is filled between the core wire 2 and the shield wire 4 and is bonded to the core wire 2 and the shield wire 4. Therefore, when the electrode portion 7 and the electrode portion 8 are formed by plating. In addition, the plating solution can be prevented from invading around the core wire 2 and the shield wire 4.
  • FIG. 13 is a perspective view showing a cable end surface structure 10D according to a third embodiment of the present invention.
  • 14 and 15 are perspective views illustrating the manufacture of the cable end structure 10D of FIG.
  • the cable end structure 10D includes a coaxial cable 1D and a fixing portion 6D covering one end of the coaxial cable 1D.
  • the fixing portion 6D is made of a resin having a groove portion 61 for mounting the coaxial cable 1D and a wall portion 62 for preventing displacement of the coaxial cable 1D, and is mounted on the mold portion 60. And a resin fixing portion 65 covering the coaxial cable 1D.
  • the mold 60 may be made of metal or the like in addition to resin.
  • the groove 61 and the wall 62 are formed in parallel with the arrangement direction of the coaxial cable 1D.
  • the coaxial cable 1D is obtained by removing the first region R1 consisting of the core wire 2, the inner insulator 3, the shield wire 4 and the outer insulator 5, the inner insulator 3 and the outer insulator 5, and removing the core wire 2 and the shield wire 4 And a third region R3 composed of the core wire 2, the internal insulator 3, the shield wire 4 and the external insulator 5.
  • the core 2, the internal insulator 3, the shield 4, and the external insulator 5 are exposed, and on the exposed core 2 and shield 4, the electrode portion 7 and an electrode portion 8 are formed.
  • the cable end structure 10D temporarily fixes the coaxial cables in a state where they are aligned with the cable array member, and as shown in FIG.
  • a coaxial cable 1D is formed in which the second region R2 and the third region are formed.
  • the portion to be the first region R1, the second region R2 and the third region R3 of the coaxial cable 1D is attached to the sealing mold including the mold portion 60, and the material of the resin fixing portion 65 in the mold
  • the end face is cut and / or polished to form a connection end face S where the end face of the first region R1 is exposed.
  • the core wire 2 and the shield wire 4 whose entire circumference is exposed in the second region R2 can be fixed by the resin fixing portion 65 made of resin having good adhesion to the core wire 2 and the shield wire 4. It is possible to reduce the influence of stress on the connection when stress is applied to 1.
  • the shield wire 4 is supported by the inner insulator 3 and the outer insulator 5 and placed on the mold portion 60, so the fixing portion 6D is formed. Misalignment can be prevented.
  • a mold having no wall portion 62 can also be used as a mold portion.
  • the second region R2 may be exposed to the connection end surface S by cutting the fixing portion 6D in the second region R2.
  • FIG. 16 is a perspective view for explaining a mold portion 60E of a cable end face structure 10E (not shown) according to the first modification of the third embodiment of the present invention.
  • the mold portion 60E is a lower portion of the groove portion 61, and a hole 63 is formed at a position forming the second region R2 of the coaxial cable 1E (not shown) so as to be orthogonal to the arrangement direction of the coaxial cable. There is.
  • the hole 63 penetrates the back surface of the mold 60E.
  • the cable end structure 10E temporarily fixes the coaxial cable 1E in a state where the coaxial cable 1E is aligned by the mold 60E and the upper mold (not shown). Holes are formed in the upper mold at positions corresponding to the holes 63 of the mold 60E. After temporary fixing, laser is irradiated from the upper and lower direction of the upper mold and the mold portion 60E to remove the internal insulator 3 and the external insulator 5 in the second region R2.
  • the structure of the coaxial cable 1E is the same as that of the cable 1D of the third embodiment.
  • the mold is attached to the outside of the upper mold and the mold 60E, and the mold including the hole 63 is filled with the resin as the material of the resin fixing portion 65 and cured to remove the mold 60E. After removing the sealing mold, the end face is cut and / or polished to form a fixing portion 6E (not shown) having a connection end face S where the end face of the first region R1 is exposed.
  • the processing of the coaxial cable 1E and the formation of the fixing portion 6E can be performed by the same cable array member (the mold portion 60E and the upper type), the positional accuracy of the coaxial cable 1E can be improved. It can be improved.
  • FIG. 17 is a perspective view showing a cable end face structure according to a fourth embodiment of the present invention.
  • 18 and 19 are perspective views illustrating the manufacture of the cable end structure of FIG.
  • the cable end structure 10F includes a coaxial cable 1F and a fixing portion 6F covering one end of the coaxial cable 1F.
  • the fixing portion 6F is made of resin, as in the third embodiment, and includes a mold portion 60 having a groove portion 61 for mounting the coaxial cable 1F and a wall portion 62 for preventing displacement of the coaxial cable 1F. And a resin fixing portion 65F covering the coaxial cable 1F placed on the portion 60.
  • the groove portion 61 and the wall portion 62 are formed in parallel with the arrangement direction of the coaxial cable 1F.
  • the internal insulator 3 is removed, and the core wire 2 and the first region R1 where the inner periphery of the shield wire 4 is exposed; And the second region R2 where the core wire 2 and the shield wire 4 are exposed by removing the outer insulator 5, and a third region R3 consisting of the core wire 2, the inner insulator 3, the shield wire 4 and the outer insulator 5; And.
  • the core wire 2 On the connection end face S, as shown in FIGS. 17 and 19, the core wire 2, the shield wire 4 and the external insulator 5 are exposed, and on the exposed core wire 2 and shield wire 4, the electrode portion 7 and the electrode portion 8 are formed.
  • the core wire 2 and the shield wire 4 whose entire circumference is exposed in the second region R2 can be fixed by the resin fixing portion 65F made of a resin having good adhesion to the core wire 2 and the shield wire 4.
  • the influence of stress on the connection when stress is applied to 1 F can be reduced.
  • the shield wire 4 is supported by the external insulator 5 and mounted on the mold portion 60, thereby preventing positional deviation when forming the fixed portion 6F. be able to.
  • the resin fixing portion 65 is filled between the core wire 2 and the shield wire 4 and bonded to the core wire 2 and the shield wire 4, so that the electrode portion 7 and the electrode portion 8 are formed by plating. In this case, it is possible to prevent the plating solution from invading around the core wire 2 and the shield wire 4.
  • the present invention is applicable to a cable connection structure in which high connection reliability is required between a coaxial cable and a substrate.

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Abstract

L'invention concerne une structure d'extrémité de câble, une structure de connexion de câble, et un endoscope permettant de réduire l'effet de contrainte sur une partie de connexion, d'améliorer la précision de la position d'un fil central et d'un fil blindé exposé au niveau d'une face d'extrémité, et de maintenir la fiabilité de la connexion entre un câble coaxial et une carte de circuit imprimé. Une structure d'extrémité (10) de câble destinée à être connectée à une électrode de connexion d'une carte de circuit imprimé comprend : au moins un câble coaxial (1) comportant un fil central (2), un isolant interne (3), un fil blindé (4) et un isolant externe (5) ; et une partie de fixation (6) qui recouvre une extrémité du câble coaxial (1). Le câble coaxial (1) situé à l'intérieur de la partie de fixation (6) possède une première région (R1) qui comprend une face d'extrémité, une deuxième région (R2) dans laquelle l'isolant interne (3) et l'isolant externe (5) sont retirés et le fil central (2) et le fil blindé (4) sont exposés, et une troisième région (R3) située sur un côté d'extrémité proximale. La partie de fixation (6) est collée et fixée au fil central (2) et au fil blindé (4) qui ne sont exposés qu'au niveau de la deuxième région (R2), et à la première région (R1) et à la troisième région (R3).
PCT/JP2017/028139 2017-08-02 2017-08-02 Structure d'extrémité de câble, structure de connexion de câble et endoscope Ceased WO2019026219A1 (fr)

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PCT/JP2017/028139 WO2019026219A1 (fr) 2017-08-02 2017-08-02 Structure d'extrémité de câble, structure de connexion de câble et endoscope

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PCT/JP2017/028139 WO2019026219A1 (fr) 2017-08-02 2017-08-02 Structure d'extrémité de câble, structure de connexion de câble et endoscope

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EP4651309A1 (fr) * 2024-05-17 2025-11-19 Hirakawa Hewtech Corporation Structure de connexion de fil, procédé de fabrication de structure de connexion de fil et ensemble de fil
EP4651314A1 (fr) * 2024-05-17 2025-11-19 Hirakawa Hewtech Corporation Structure de connexion de fil, procédé de fabrication de structure de connexion de fil et ensemble de fil

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EP4651314A1 (fr) * 2024-05-17 2025-11-19 Hirakawa Hewtech Corporation Structure de connexion de fil, procédé de fabrication de structure de connexion de fil et ensemble de fil

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