WO2020162654A1 - Coaxial cable connection structure and method - Google Patents

Coaxial cable connection structure and method Download PDF

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Publication number
WO2020162654A1
WO2020162654A1 PCT/KR2019/009190 KR2019009190W WO2020162654A1 WO 2020162654 A1 WO2020162654 A1 WO 2020162654A1 KR 2019009190 W KR2019009190 W KR 2019009190W WO 2020162654 A1 WO2020162654 A1 WO 2020162654A1
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WO
WIPO (PCT)
Prior art keywords
insulator
coaxial cable
cable
covering
shield
Prior art date
Application number
PCT/KR2019/009190
Other languages
French (fr)
Korean (ko)
Inventor
이명환
황창순
Original Assignee
주식회사 태양쓰리시
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Publication of WO2020162654A1 publication Critical patent/WO2020162654A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515—Connection to a rigid planar substrate, e.g. printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections

Definitions

  • the present invention relates to a coaxial cable connection structure and method, and more particularly, to a coaxial cable harness applicable to a small camera module and an image sensor, such as an endoscope camera module.
  • the conventional technique generally deals with a method of aligning and bonding coaxial cables in a horizontal direction to a circuit board.
  • the plane formed by the circuit board and the longitudinal axis of the cable are parallel.
  • Japanese Laid-Open Patent No. 2010-108635 deals with a method of vertically bonding a cable to a circuit board by bending a cable.
  • this prior art requires space to bend the coaxial cable.
  • the size of endoscope cameras is getting smaller, while the resolution of endoscope cameras is increasing. Accordingly, the high resolution small endoscope camera module has a pad (or electrode) of a new structure, and is not compatible with the conventional cable harness technology.
  • the method disclosed in U.S. Patent No. 8,513,536 B2 cannot be applied to a plurality of rows of pads, and the method disclosed in Japanese Patent Laid-Open No. 2010-108635 requires a space for bending the cable, so the size of the endoscope camera Is not suitable for the technological trend that is becoming more compact.
  • the present invention is to solve the limitations of the conventional cable harness technology by providing a coaxial cable bonding structure and bonding method applicable to a high resolution small endoscope camera module.
  • a cable fixing portion including an insulator, a copper plate covering the rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; And a coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield, wherein the copper plate
  • the coaxial cable is arranged on a side surface of the insulator so as to contact at least a portion, and by heating at least a portion of the lead plate, the lead plate is soldered to at least a portion of the shield.
  • the length of the inner insulator is 0.1 mm or less, and a boundary between the insulator and the copper plate may be spaced apart from a boundary between the inner insulator and the center line.
  • the side surface of the insulator includes a concave portion, and the coaxial cable may be arranged in the concave portion.
  • a side surface of the insulator includes concave edges, and a cable including a signal line and an insulator covering an outer circumference of the signal line and a plurality of coaxial cables are arranged at the concave edges, and the plurality of For a common ground between coaxial cables of, shields of the plurality of coaxial cables and signal lines of the cables may contact the copper plate.
  • the insulator may be formed of Teflon.
  • the cable fixing part regularly forms holes in a printed circuit board (PCB) including the insulator and the copper plate, and the printed circuit board including the holes is a unit of a predetermined size. It may be divided into a printed circuit board and formed by covering the lead plate on a copper plate of the unit printed circuit board.
  • PCB printed circuit board
  • the insulator includes an adhesive layer covering the entire surface of the insulator, the adhesive layer is adhered to a substrate including a pad of a camera module, and the center line may be electrically connected to the pad. .
  • the side surface of the insulator may include a plurality of concave portions repeated at a predetermined distance, and a plurality of coaxial cables may be arranged in the plurality of concave portions.
  • the cross section of the insulator may have a cross shape.
  • a coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield
  • a connection method of comprising: generating a cable fixing part including an insulator, a copper plate covering a rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; Arranging the coaxial cable on the side of the insulator so that the copper plate contacts at least a portion of the shield; And soldering the lead plate to at least a portion of the shield by heating at least a portion of the lead plate.
  • a plurality of coaxial cables can be bonded in a direction perpendicular to a circuit board, and a plurality of coaxial cables can be arranged not only in one row but also in two or more rows to be bonded to the circuit board. have.
  • a plurality of coaxial cables can be collectively bonded to a circuit board, thereby simplifying the operation process.
  • the bonding force between the coaxial cable and the circuit board can be strengthened, and thus the phenomenon that the coaxial cable is separated from the circuit board during the endoscopic procedure can be prevented by an external force.
  • the length of the internal insulator of the coaxial cable can be very short, thus minimizing signal attenuation and distortion caused by external factors, and between the coaxial cable and the circuit board.
  • the impedance matching of the small image sensor it is possible to transmit a high resolution image signal of a small image sensor with a sufficient length without loss.
  • FIG. 1 shows an exemplary structure of a pad of a small endoscope camera module.
  • FIG. 2 shows a cable fixing part of a coaxial cable splicing structure according to an embodiment of the present invention.
  • FIG 3 shows an arrangement of a cable fixing part and a coaxial cable according to an embodiment of the present invention.
  • FIG. 4 shows a joint structure of a coaxial cable according to an embodiment of the present invention.
  • FIG. 5 is a view for explaining a method of generating a cable fixing unit using a printed circuit board according to an embodiment of the present invention.
  • FIG. 6 shows an exemplary cable anchor produced according to the method of FIG. 5.
  • FIG. 7 shows a cable fixing part including an adhesive layer according to an embodiment of the present invention.
  • FIG 8 shows a joint structure of a coaxial cable using a cable fixing part including an adhesive layer according to an embodiment of the present invention.
  • FIG 9 shows a splicing structure of an extended coaxial cable according to an embodiment of the present invention.
  • FIG. 10 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
  • FIG. 11 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
  • FIG. 1 shows an exemplary structure of a pad of a small endoscope camera module.
  • the small endoscope camera module 100 may have a cross-sectional area of about 1 mm 2 or less.
  • the small endoscope camera module 100 may have a size of 1050 um or less in width (w1) and 1050 um in height (h1), and due to its small size, it can be used for minimally invasive surgery such as spinal endoscopy and bone density endoscopy. have.
  • the small endoscope camera module 100 may have four point pads 110a, 110b, 110c, and 110d on a circuit board at the rear side.
  • a cable for transmitting a signal, power, ground, and clock may be bonded to the four point pads 110a, 110b, 110c, and 110d, respectively.
  • the four point pads 110a, 110b, 110c, and 110d may have a pitch of 470um or less in width (w2) and 400um or less in height (h2).
  • the cable is bonded to the 4 point pads 110a, 110b, 110c, 110d in a direction perpendicular to the structure (Hereinafter, a'vertical junction structure') may be required.
  • a'vertical junction structure' the circuit board of the small endoscope camera module 100 having the 4-point pads 110a, 110b, 110c, and 110d, and the cable to be bonded to the 4-point pads 110a, 110b, 110c, 110d.
  • the longitudinal axis can be vertical.
  • the circuit board of the small endoscope camera module and the longitudinal axis of the cable to be bonded to the pad may be parallel.
  • the vertical bonding structure may be difficult to sufficiently secure a bonding area between the four-point pads 110a, 110b, 110c, and 110d and the cable. Accordingly, if the cable is simply soldered to the 4-point pads 110a, 110b, 110c, and 110d, the cable can be applied to the 4-point pads 110a, 110b, even with a small movement or small external force of the cable and the small endoscope camera module 100. 110c, 110d) can be easily peeled off.
  • the small endoscope camera module 100 may have a high resolution of 400 x 400 pixels or more.
  • the small endoscope camera module of low resolution uses a general cable (also referred to as a discrete wire or single cable) consisting only of an insulator covering the outer circumference of the signal line and the signal line, while the high resolution small endoscope camera module shown in FIG. 100 can use a coaxial cable to transmit the video signal without loss. Due to the structural characteristics of the coaxial cable, the coaxial cable harness structure may be more complex than the general cable harness structure.
  • FIG. 2 shows a cable fixing part of a coaxial cable splicing structure according to an embodiment of the present invention.
  • the cable fixing part 200 includes an insulator 210 (or an insulating layer), a copper plate 220 (or a copper layer) covering the rear surface of the insulator 210, and a lead plate 230 (or a lead plate) covering the rear surface of the copper plate 220 ) Can be included.
  • the front surface of the insulator 210 may face the four point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100.
  • the insulator 210 that does not conduct electricity may be made of a heat-resistant material or a thermosetting material.
  • the insulator 210 may be made of Teflon.
  • the insulator 210 may be made of a material generally used for a printed circuit board such as epoxy and phenol. Accordingly, the insulator 210 can prevent a short between the core wires of a plurality of coaxial cables, and heat generated by the soldering operation and heat generated by the small endoscope camera module 100 It can resist the phenomenon that the cable is peeled off due to heat.
  • At least a portion of the side surface of the insulator 210 may include recesses 212a, 212b, 212c, and 212d through which coaxial cables may be arranged.
  • the concave portions 212a, 212b, 212c, 212d are grooves, gaps, slits, or holes that are concave in a part of the insulator 210 to facilitate cable arrangement.
  • the insulator 210 has four recesses 212a, 212b at the edge so that four cables to be connected to the four point pads 110a, 110b, 110c, and 110d can be arranged. 212c, 212d).
  • three of the four recesses 212a, 212b, 212c, and 212d positioned at the edge of the insulator 210 may be bonded with coaxial cables for transmitting signals, power, and clocks, respectively.
  • a general cable for grounding may be bonded to the other recessed part.
  • the size and shape of the concave portions 212a, 212b, 212c, and 212d may be the same and may be regular. However, the size and shape of the concave portions 212a, 212b, 212c, and 212d may be different from each other and may be irregular depending on the process process.
  • the copper plate 220 and the lead plate 230 may have the same shape as the insulator 210. As will be described later in FIG. 5, the copper plate 220 may have the same shape while passing through the same process as the insulator 210, and the lead plate 230 is processed through a dipping operation on the finished copper plate 220. Can be created.
  • the copper plate 220 may contact at least a portion of a shield wire of a coaxial cable and may serve as an electrode for grounding. Since the copper plate 220 has the same shape as the insulator 210, as will be described later with reference to FIG. 3, common grounding between the plurality of coaxial cables can be easily implemented by the copper plate 220.
  • the lead plate 230 may serve to fix the cables arranged in the cable fixing part 200.
  • the external force is dispersed by the bonding force between the lead plate 230 of the cable fixing part 200 and the coaxial cable, the phenomenon that the cables and the 4-point pads 110a, 110b, 110c, and 110d are easily separated can be prevented. have.
  • the maximum horizontal length of the cable fixing part 200 may be shorter than the horizontal pitch w2 of the 4-point pads 110a, 110b, 110c, and 110d, and the maximum vertical length of the cable fixing part 200 is a 4-point pad ( It may be shorter than the vertical pitch h2 of 110a, 110b, 110c, and 110d. Therefore, according to the coaxial cable bonding structure disclosed in the present invention, since the size of the small endoscope camera module 100 may not be substantially increased, it may be advantageous for minimally invasive surgery.
  • FIG 3 shows an arrangement of a cable fixing part and a coaxial cable according to an embodiment of the present invention.
  • the coaxial cable 310 includes a center line 312, an inner insulator 314 covering the outer periphery of the center line 312, a shield 316 covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield 316 ( 318).
  • the center line 312 may be a wire for transmitting an image signal, power, and a clock of the small endoscope camera module 100.
  • the internal insulator 314 may prevent a short between the center line 312 and the shield 316.
  • the shield 316 or the shield wire may shield external factors to prevent signal distortion and attenuation of the center line, and an external insulator, also called a jacket, may protect the coaxial cable 310.
  • the coaxial cable 310 may be arranged on the side of the insulator 210.
  • the insulator 210 may include concave portions 212a, 212b, 212c, 212d on the side surfaces to guide the coaxial cable 310 arrangement, and the coaxial cable 310 is concave portion 212a , 212b, 212c, 212d).
  • 300a shows a coaxial cable 310 and a cable fixing part 200 spaced apart from the coaxial cable 310
  • 300b shows a coaxial cable 310 and a coaxial cable 310 with recesses 212a, 212b, 212c, 212d ) Shows the cable fixing part 200 located on the above.
  • 300c shows a cross section in the AA′ direction of the drawing of 300b.
  • the center line 312, the inner insulator 314, and the shield 316 are sequentially exposed from the front of the cable fixing part 200, and the outer insulator 318 is a cable fixing part It can be separated from the back of the 200.
  • the coaxial cable 310 may be arranged on the side of the insulator 210 so that the copper plate 220 of the cable fixing part 200 contacts at least a part of the shield 316 of the coaxial cable 310. have.
  • the lead plate 230 may be soldered to at least a portion of the shield 316 of the coaxial cable 310.
  • a part of the soldering plate 230 in contact with the coaxial cable 310 does not need to be accurately heated, so that the soldering operation can be facilitated.
  • the central portion of the lead plate 230 which is relatively easy to heat, is heated to the soldering temperature, so that the copper plate 220 is shielded.
  • the lead plate 230 may be fixed to at least a part of the shield 316 in a state in contact with at least a part of the 316.
  • the lead plate 230 is soldered to at least a portion of the shield 316, but may not be soldered to the external insulator 318.
  • the method of fixing the coaxial cable 310 by the lead plate 230 is not limited thereto.
  • the lead plate 230 may be soldered to at least a portion of the shield 316, a boundary between the shield 316 and the external insulator 318, and at least a portion of the external insulator 318.
  • the length of the inner insulator 314 of the coaxial cable 310 can be reduced to 0.1 mm or less. Accordingly, by effectively shielding external factors in a state where the shield 316 is very close to the center line 312, signal distortion and attenuation of the center line 312 can be minimized, and a high-resolution image of the small endoscope camera module 100 The signal can be transmitted in sufficient length without loss.
  • the boundary 330 between the insulator 210 and the copper plate 220 in the cable fixing part 200 is a coaxial cable.
  • the boundary 340 between the inner insulator 314 and the center line 312 at 310 may be spaced apart by a predetermined distance or more.
  • FIG. 4 shows a joint structure of a coaxial cable according to an embodiment of the present invention.
  • 400a shows a bonding structure between a plurality of coaxial cables 310a, 310c, and 310d, the cable fixing part 200, and the small camera module 100
  • 400b is a cross section in the BB' direction of the bonding structure of 400a
  • 400c shows a cross section in the direction B"B"" of the junction structure of 400a.
  • the concave portions 212a, 212b, 212c, and 212d of the cable fixing portion 200 may be located at an edge of the side surface of the insulator 210 (hereinafter, referred to as'concave edge').
  • the shields 316a, 316c, 316d of the plurality of coaxial cables 310a, 310c, 310d are provided with a cable fixing part ( A plurality of coaxial cables 310a, 310b, 310d may be arranged on the concave edges 212a, 212b, 212c, 212d of the cable fixing part 200 so as to contact the copper plate 220 of 200 together.
  • a general cable including a signal line 312b and an insulator 314b covering the outer periphery of the signal line 312b may be arranged on any one of the concave edges 212a, 212b, 212c, 212d, and a plurality of coaxial cables
  • the signal line 312b of a general cable may contact the copper plate 220 of the cable fixing part 200.
  • a plurality of coaxial cables 310a, 310c, 310d may be bonded to the pads 110a, 110c, 110d for signal, power, and clock, respectively, and the general cable 312b is connected to the pad 110b for grounding. Can be joined.
  • all a plurality of coaxial cables 310a, 310c, 310d and general cables 310b are fixed to the cable fixing part 200 with a single soldering operation. can do.
  • the central part of the lead plate 230 which is relatively easy to heat, is heated to the soldering temperature, so that the copper plate 220 In contact with the shields 316a, 316c, 316d of the coaxial cables 310a, 310c, 310d and the signal line 312b of the general cable 310b, all a plurality of coaxial cables 310a, 310c, 310d and general The cable 312b can be fixed.
  • the front of the insulator 210 may face the small endoscope camera module 100, and the center lines 312a, 312c, and the plurality of coaxial cables 310a, 310c, 310d, 312d) and the signal line 312b of the general cable 310b are soldered to the 4-point pads 110a, 110b, 110c, 110d, and the center lines 312a, 312c, 312d of the plurality of coaxial cables 310a, 310c, 310d And the signal line 312b of the general cable 310b and the four point pads 110a, 110b, 110c, 110d may be electrically connected.
  • FIG. 5 is a view for explaining a method of generating a cable fixing unit using a printed circuit board according to an embodiment of the present invention.
  • the printed circuit board 500 may include an insulator (or insulating layer) and a copper plate (or copper layer). Therefore, if the printed circuit board 500 is used, the cable fixing part 200 of FIGS. 2 to 4 can be easily manufactured.
  • holes 520a, 520b, 520c, 520d, 520e, and 520f may be regularly formed at predetermined intervals in the printed circuit board 500 including an insulator and a copper plate.
  • regular holes 520a, 520b, 520c, 520d, 520e and 520f may be formed in the printed circuit board 500 by using a router bit or a drill bit for a PCB.
  • each of the holes 520a, 520b, 520c, 520d, 520e, and 520f may be used as concave portions 212a, 212b, 212c, 212d of the cable fixing portion 200, so the coaxial cable 310
  • each of the holes 520a, 520b, 520c, 520d, 520e, and 520f may have a diameter greater than the diameter of the coaxial cable 310, and may have a circular shape.
  • the pitches (w4, h4) between the holes (520a, 520b, 520c, 520d, 520e, 520f) is a small endoscope camera module 100 ) May be the same as the pitches w2 and h2 of the four-point pads 110a, 110b, 110c, and 110d.
  • the size, shape, and pitch of the holes 520a, 520b, 520c, 520d, 520e, and 520f may be constant, but due to an error in the working process, the holes 520a, 520b, 520c, 520d , 520e, 520f) may have irregular sizes, shapes, and pitches.
  • the printed circuit board 500 in which the holes 520a, 520b, 520c, 520d, 520e, and 520f are formed may be divided into unit printed circuit boards 510 having a predetermined size. Specifically, the holes 520a, 520b, 520c, 520d, 520e so that some of the holes 520a, 520b, 520d, 520e become concave portions 512a, 512b, 512c, 512d of the unit printed circuit board 510
  • the unit printed circuit board 510 may be divided from the printed circuit board 500 on which the, 520f) is formed.
  • the cable fixing part 200 including the insulator 210, the copper plate 220, and the lead plate 230 of FIGS. 2 to 4 is formed. can do.
  • FIG. 6 shows an exemplary cable anchor produced according to the method of FIG. 5.
  • Regular holes 660a, 660b, 660c, 660d are formed in the printed circuit board 600 including the insulating layer 610 and the copper layer 620, and the holes 660a, 660b, 660c, 660d are formed.
  • a unit printed circuit board 610 of a predetermined size may be divided from the printed circuit board 600 having a predetermined size. Thereafter, by dipping lead on the copper layer 620 of the unit printed circuit board 630, a cable fixing part 630 including the insulator 640, the copper plate 650, and the lead plate 660 may be formed. have.
  • the order of the drilling process, the lead dipping process, and the division process of the unit printed circuit board 630 may be changed. For example, after forming holes 660a, 660b, 660c, 660d in the printed circuit board 600, the copper layer of the printed circuit board 600 in which holes 660a, 660b, 660c, 660d are formed ( After dipping lead into 620, the unit printed circuit board 630 may be divided from the printed circuit board 600 having the holes 660a, 660b, 660c, and 660d and the dipped lead.
  • the unit printed circuit board 630 may be divided from the printed circuit board 600 including 660c and 660d) and diped lead.
  • some of the holes of the printed circuit board 600 may be recessed portions 642a, 642b, 642c, and 642d positioned on the side surfaces of the unit printed circuit board 610.
  • FIG. 7 shows a cable fixing part including an adhesive layer according to an embodiment of the present invention.
  • the insulator 210 may include an adhesive layer 710 covering the entire surface of the insulator 210. Accordingly, the cable fixing part 700 may sequentially include an adhesive layer 710, an insulator 210, a copper plate 220, and a lead plate 230 from the front to the rear.
  • the adhesive layer 710 may be fixed to the circuit board of the small camera module 100 to facilitate bonding between the coaxial cable and the small camera module.
  • the adhesive layer 710 may have the same shape as the insulator 210.
  • the adhesive layer 710 may be smaller than the insulator 210, and the adhesive layer 710 smaller than the insulator 210 may be located in a central region of the insulator 210 to secure a bonding area.
  • FIG 8 shows a joint structure of a coaxial cable using a cable fixing part including an adhesive layer according to an embodiment of the present invention.
  • 800a shows a bonding structure between a plurality of coaxial cables 310a, 310c, and 310d, a cable fixing part 700, and a small camera module 100
  • 800b is a cross section in the CC' direction of the bonding structure of 800a
  • 800c shows a cross section in the C''C''' direction of the junction structure of 800a.
  • the front surface of the adhesive layer 710 may be adhered to a circuit board including the four point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100.
  • the center lines 312a, 312b, 312c, 312d of the plurality of coaxial cables 310a, 310c, 310d and the signal line 312b of the general cable 310b are connected to the 4-point pads 110a, 110b, 110c, 110d.
  • FIG 9 shows a splicing structure of an extended coaxial cable according to an embodiment of the present invention.
  • the cable fixing part 900 may be extended.
  • the side surface of the insulator 922 of the cable fixing part 900 is a small endoscope camera module pad with a plurality of concave parts 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d repeated at a predetermined distance. It can contain as many as In addition, a plurality of coaxial cables may be arranged on the concave portions 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d and electrically bonded to the endoscope camera module pad.
  • a general cable for grounding is arranged in any one of the concave portions 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d, and may be electrically bonded to the endoscope camera module pad.
  • the concave portions 930a, 930b, 930c, 930d are located on the first side of the insulator 922, and the remaining concave portions 940a, 940b, 940c, 940d are insulators 922 ) Can be located on the second side.
  • the first side and the second side may be opposite sides, and thus, a plurality of coaxial cables may be arranged in 2 rows and m columns on the cable fixing part 900.
  • the structure and effect of the insulator 922, the copper plate 924, the lead plate 926, and the adhesive layer 928 included in the cable fixing part 900 may be the same as described above with reference to FIGS. 1 to 8. , Redundant description will be omitted.
  • FIG. 10 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
  • the concave portions 1040a, 1040b, 1040c, and 1040d of the cable fixing portion 1030 may be spaced apart from the side edges while being positioned on the side surfaces of the insulator 1032.
  • the concave portions 1040a, 1040b, 1040c, and 1040d may be located in the central side of the insulator.
  • the coaxial cable 1040 may be arranged in the concave portions 1040a, 1040b, 1040c, and 1040d located in the central portion of the side of the insulator.
  • the concave portions 1040a, 1040b, 1040c, and 1040d of the cable fixing portion 1030 can be located at the center of the side surface of the insulator 1032.
  • FIG. 11 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
  • a cross section of the insulator of the cable fixing part 1130 may have a cross shape.
  • the cable fixing part 1130 may include cable guide parts 1132a, 1132b, 1132c, and 1132d having a right angle shape on the side of the insulator.
  • the cable guide portions 1132a, 1132b, 1132c, and 1132d having a right angle shape may mean a groove, a gap, a slit, or a hole in which the side of the insulator is cut at a right angle, and coaxial
  • the cables 1140 may be arranged on the cable guides 1132a, 1132b, 1132c, and 1132d.
  • the cable fixing part 1130 When creating the cable fixing part 1130 using the printed circuit board 1100, square holes 1120a, 1120b, 1120c, 1120d, 1120e, 1120f are regularly drilled in the printed circuit board 1100, and By separating the unit printed circuit board 1100 of a predetermined size from the printed circuit board 1100 on which the holes 1120a, 1120b, 1120c, 1120d, 1120e, 1120f are formed, the cable guide portions 1132a, 1132b having a right angle shape , 1132c, 1132d) may be generated.
  • FIG. 12 is a flowchart of a method for splicing a coaxial cable according to an embodiment of the present invention.
  • a cable fixing part 200 including an insulator 210, a copper plate 220 covering the rear surface of the insulator 210, and a lead plate 230 covering the rear surface of the copper plate 220 may be generated.
  • the cable fixing part 200 may be generated using a printed circuit board 500, and the cable fixing part 200 is a printed circuit board.
  • the steps of generating using 500 include: drilling a hole in the printed circuit board 500, separating the unit printed circuit board 500 from the printed circuit board 500 in which the hole is formed, and the unit printed circuit board It may include dipping lead in 500.
  • the coaxial cable 310 may be arranged on the side of the insulator 210 of the cable fixing part 200 so that the copper plate 220 contacts at least a part of the shield 316 of the coaxial cable 310. .
  • step S1230 by heating at least a part of the lead plate 230 of the cable fixing part 200, the lead plate 230 may be soldered to at least a part of the shield 316 of the coaxial cable 310.
  • the adhesive layer 710 of the cable fixing part 200 may be adhered to a circuit board including the four point pads 110a, 110b, 110c, 110d of the small endoscope camera module 100, and the coaxial cable 310
  • the center line 312 of may be soldered to the 4-point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100.

Abstract

According to one embodiment of the present invention, disclosed is a connection structure of a coaxial cable comprising: a cable fixed unit including an insulator, a copper plate covering the rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; and a coaxial cable including a central line, an inner insulator covering the outer circumference of the central line, a shield covering the outer circumference of the inner insulator, and an outer insulator covering the outer circumference of the shield, wherein the coaxial cable is arranged on the side surface of the insulator such that the copper plate is in contact with at least part of the shield, and at least part of the lead plate is heated, thereby soldering the lead plate on at least a part of the shield.

Description

동축 케이블의 접속 구조 및 방법Connection structure and method of coaxial cable
본 발명은 동축 케이블의 접속 구조 및 방법에 관한 것으로, 구체적으로는, 내시경 카메라 모듈과 같은, 소형 카메라 모듈 및 이미지 센서에 적용 가능한 동축 케이블 하네스에 관한 것이다.The present invention relates to a coaxial cable connection structure and method, and more particularly, to a coaxial cable harness applicable to a small camera module and an image sensor, such as an endoscope camera module.
미국등록특허 US 8,513,536 B2와 같이, 일반적으로 종래의 기술은 회로 기판에 수평한 방향으로 동축 케이블을 정렬 및 접합하는 방식을 다룬다. 구체적으로, US 8,513,536 B2에서는 회로 기판에 의해 형성되는 평면과 케이블의 길이 방향 축이 평행하다.As in US Patent No. 8,513,536 B2, the conventional technique generally deals with a method of aligning and bonding coaxial cables in a horizontal direction to a circuit board. Specifically, in US 8,513,536 B2, the plane formed by the circuit board and the longitudinal axis of the cable are parallel.
일본공개특허 제2010-108635호는 케이블을 구부려서 케이블을 회로 기판에 수직으로 접합하는 방식을 다룬다. 그러나, 이와 같은 종래 기술은 동축 케이블을 구부리기 위한 공간을 필요로 한다. Japanese Laid-Open Patent No. 2010-108635 deals with a method of vertically bonding a cable to a circuit board by bending a cable. However, this prior art requires space to bend the coaxial cable.
더불어, 위와 같은 종래의 기술들은 복수의 동축 케이블을 일렬로 배열하여 회로 기판에 접합하는 방식을 다룰 뿐이다.In addition, the conventional techniques described above only deal with a method of arranging a plurality of coaxial cables in a line and bonding them to a circuit board.
최소 침습 수술(minimally invasive surgery)을 위해 내시경 카메라의 크기는 더욱 소형화 되어가는 반면, 내시경 카메라의 해상도는 증가하고 있다. 이에 따라, 고해상도의 소형 내시경 카메라 모듈은 새로운 구조의 패드(pad, 또는 전극)를 갖게 되었으며, 종래의 케이블 하네스 기술과는 호환이 불가능하다. 예를 들어, 미국등록특허 US 8,513,536 B2에 개시된 방법은 복수 열의 패드에 대해서 적용이 불가능하며, 일본공개특허 제2010-108635호에 개시된 방법은 케이블을 구부리기 위한 공간을 필요로 하므로, 내시경 카메라의 크기는 더욱 소형화 되어가는 기술적 트렌드에 적합하지 않다.For minimally invasive surgery, the size of endoscope cameras is getting smaller, while the resolution of endoscope cameras is increasing. Accordingly, the high resolution small endoscope camera module has a pad (or electrode) of a new structure, and is not compatible with the conventional cable harness technology. For example, the method disclosed in U.S. Patent No. 8,513,536 B2 cannot be applied to a plurality of rows of pads, and the method disclosed in Japanese Patent Laid-Open No. 2010-108635 requires a space for bending the cable, so the size of the endoscope camera Is not suitable for the technological trend that is becoming more compact.
본 발명은, 고해상도의 소형 내시경 카메라 모듈에 적용 가능한 동축 케이블의 접합 구조 및 접합 방법을 제공하여, 종래의 케이블 하네스 기술의 한계점을 해결하고자 한다.The present invention is to solve the limitations of the conventional cable harness technology by providing a coaxial cable bonding structure and bonding method applicable to a high resolution small endoscope camera module.
본 발명의 일 실시예에 따르면, 동축 케이블의 접속 구조에 있어서, 절연체, 상기 절연체의 후면을 덮는 구리판, 및 상기 구리판의 후면을 덮는 납판을 포함하는 케이블 고정부; 및 중심선, 상기 중심선의 외주를 피복하는 내부절연체, 상기 내부절연체의 외주를 피복하는 실드(shield), 상기 실드의 외주를 피복하는 외부절연체를 포함하는 동축 케이블 을 포함하고, 상기 구리판이 상기 실드의 적어도 일부에 접촉하도록 상기 동축 케이블은 상기 절연체의 측면에 배열되고, 상기 납판의 적어도 일부를 가열함으로써, 상기 납판이 상기 실드의 적어도 일부에 솔더링되는, 동축 케이블의 접속 구조가 개시된다.According to an embodiment of the present invention, in the connection structure of a coaxial cable, a cable fixing portion including an insulator, a copper plate covering the rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; And a coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield, wherein the copper plate The coaxial cable is arranged on a side surface of the insulator so as to contact at least a portion, and by heating at least a portion of the lead plate, the lead plate is soldered to at least a portion of the shield.
상술한 구조에 있어서, 상기 내부절연체의 길이는 0.1mm 이하이고, 상기 절연체와 상기 구리판의 경계는 상기 내부절연체와 상기 중심선의 경계와 이격될 수 있다.In the above-described structure, the length of the inner insulator is 0.1 mm or less, and a boundary between the insulator and the copper plate may be spaced apart from a boundary between the inner insulator and the center line.
상술한 구조에 있어서, 상기 절연체의 측면은 오목부를 포함하고, 상기 동축 케이블이 상기 오목부에 배열될 수 있다.In the above-described structure, the side surface of the insulator includes a concave portion, and the coaxial cable may be arranged in the concave portion.
상술한 구조에 있어서, 상기 절연체의 측면은 오목한 에지(edge)들을 포함하고, 신호선 및 상기 신호선의 외주를 피복하는 절연체를 포함하는 케이블과 복수의 동축 케이블은 상기 오목한 에지들에 배열되고, 상기 복수의 동축 케이블 사이의 공통 접지(common ground)를 위해, 상기 복수의 동축 케이블의 실드들과 상기 케이블의 신호선이 상기 구리판에 접촉할 수 있다.In the above-described structure, a side surface of the insulator includes concave edges, and a cable including a signal line and an insulator covering an outer circumference of the signal line and a plurality of coaxial cables are arranged at the concave edges, and the plurality of For a common ground between coaxial cables of, shields of the plurality of coaxial cables and signal lines of the cables may contact the copper plate.
상술한 구조에 있어서, 상기 절연체는 테프론으로 형성될 수 있다.In the above structure, the insulator may be formed of Teflon.
상술한 구조에 있어서, 상기 케이블 고정부는 상기 절연체 및 상기 구리판을 포함하는 인쇄회로기판(PCB; printed circuit board)에 규칙적으로 구멍을 형성하고, 상기 구멍을 포함하는 인쇄회로기판을 소정의 크기의 단위 인쇄회로기판으로 분할하고, 상기 단위 인쇄회로기판의 구리판 상에 상기 납판을 덮어서 형성될 수 있다.In the above structure, the cable fixing part regularly forms holes in a printed circuit board (PCB) including the insulator and the copper plate, and the printed circuit board including the holes is a unit of a predetermined size. It may be divided into a printed circuit board and formed by covering the lead plate on a copper plate of the unit printed circuit board.
상술한 구조에 있어서, 상기 절연체는 상기 절연체의 전면을 덮는 접착층을 포함하고, 상기 접착층은 카메라 모듈의 패드(pad)를 포함하는 기판에 접착되고, 상기 중심선은 상기 패드에 전기적으로 접속될 수 있다.In the above structure, the insulator includes an adhesive layer covering the entire surface of the insulator, the adhesive layer is adhered to a substrate including a pad of a camera module, and the center line may be electrically connected to the pad. .
상술한 구조에 있어서, 상기 절연체의 측면은 소정의 거리로 반복되는 복수의 오목부를 포함하고, 복수의 동축 케이블이 상기 복수의 오목부에 배열될 수 있다.In the above structure, the side surface of the insulator may include a plurality of concave portions repeated at a predetermined distance, and a plurality of coaxial cables may be arranged in the plurality of concave portions.
상술한 구조에 있어서, 상기 절연체의 단면은 십자 형상일 수 있다.In the above-described structure, the cross section of the insulator may have a cross shape.
본 발명의 또 다른 일 실시예에 따르면, 중심선, 상기 중심선의 외주를 피복하는 내부절연체, 상기 내부절연체의 외주를 피복하는 실드(shield), 상기 실드의 외주를 피복하는 외부절연체를 포함하는 동축 케이블의 접속 방법에 있어서, 절연체, 상기 절연체의 후면을 덮는 구리판, 및 상기 구리판의 후면을 덮는 납판을 포함하는 케이블 고정부를 생성하는 단계; 상기 구리판이 상기 실드의 적어도 일부에 접촉하도록 상기 동축 케이블을 상기 절연체의 측면에 배열하는 단계; 및 상기 납판의 적어도 일부를 가열함으로써, 상기 납판을 상기 실드의 적어도 일부에 솔더링하는 단계를 포함하는, 동축 케이블의 접속 방법이 개시된다.According to another embodiment of the present invention, a coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield A connection method of, comprising: generating a cable fixing part including an insulator, a copper plate covering a rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; Arranging the coaxial cable on the side of the insulator so that the copper plate contacts at least a portion of the shield; And soldering the lead plate to at least a portion of the shield by heating at least a portion of the lead plate. A method of connecting a coaxial cable is disclosed.
본 발명의 동축 케이블 접합 구조를 이용하면, 복수의 동축 케이블을 회로 기판에 수직한 방향으로 접합할 수 있으며, 복수의 동축 케이블이 1열 뿐만 아니라 2열 이상으로도 배열되어 회로 기판에 접합할 수 있다. 또한, 본 발명의 동축 케이블 접합 구조를 이용하면, 복수의 동축 케이블을 회로 기판에 일괄하여 접합할 수 있어, 작업 과정을 단순화할 수 있다.Using the coaxial cable splicing structure of the present invention, a plurality of coaxial cables can be bonded in a direction perpendicular to a circuit board, and a plurality of coaxial cables can be arranged not only in one row but also in two or more rows to be bonded to the circuit board. have. In addition, when the coaxial cable bonding structure of the present invention is used, a plurality of coaxial cables can be collectively bonded to a circuit board, thereby simplifying the operation process.
또한, 본 발명의 동축 케이블 접합 구조를 이용하면 동축 케이블과 회로 기판 사이의 접합력을 강화할 수 있어, 외력에 의해 내시경 시술 과정에서 동축 케이블이 회로 기판으로부터 박리되는 현상을 방지할 수 있다.In addition, if the coaxial cable bonding structure of the present invention is used, the bonding force between the coaxial cable and the circuit board can be strengthened, and thus the phenomenon that the coaxial cable is separated from the circuit board during the endoscopic procedure can be prevented by an external force.
또한, 본 발명의 동축 케이블 접합 구조를 이용하면 동축 케이블의 내부절연체의 길이가 매우 짧아질 수 있으므로, 외부요인에 의한 신호 감쇠(attenuation) 및 왜곡(distortion)를 최소화하고, 동축케이블과 회로 기판 사이의 임피던스 매칭을 최대화하여, 소형 이미지 센서의 고해상도 영상 신호를 손실 없이 충분한 길이로 전송할 수 있다. In addition, when the coaxial cable splicing structure of the present invention is used, the length of the internal insulator of the coaxial cable can be very short, thus minimizing signal attenuation and distortion caused by external factors, and between the coaxial cable and the circuit board. By maximizing the impedance matching of the small image sensor, it is possible to transmit a high resolution image signal of a small image sensor with a sufficient length without loss.
도 1은 소형 내시경 카메라 모듈의 패드 예시적인 구조를 도시한다.1 shows an exemplary structure of a pad of a small endoscope camera module.
도 2는 본 발명의 일 실시예에 따른 동축 케이블 접합 구조의 케이블 고정부를 도시한다.2 shows a cable fixing part of a coaxial cable splicing structure according to an embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따른 케이블 고정부와 동축 케이블의 배열을 도시한다.3 shows an arrangement of a cable fixing part and a coaxial cable according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 동축 케이블의 접합 구조를 도시한다.4 shows a joint structure of a coaxial cable according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 인쇄회로기판을 이용하여 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.5 is a view for explaining a method of generating a cable fixing unit using a printed circuit board according to an embodiment of the present invention.
도 6은 도 5의 방법에 따라 생성된 예시적인 케이블 고정부를 도시한다.6 shows an exemplary cable anchor produced according to the method of FIG. 5.
도 7은 본 발명의 일 실시예에 따른 접착층을 포함하는 케이블 고정부를 도시한다.7 shows a cable fixing part including an adhesive layer according to an embodiment of the present invention.
도 8은 본 발명의 일 실시예에 따른 접착층을 포함하는 케이블 고정부를 이용한 동축 케이블의 접합 구조를 도시한다.8 shows a joint structure of a coaxial cable using a cable fixing part including an adhesive layer according to an embodiment of the present invention.
도 9는 본 발명의 일 실시예에 따른 확장된 동축 케이블의 접합 구조를 도시한다.9 shows a splicing structure of an extended coaxial cable according to an embodiment of the present invention.
도 10은 본 발명의 또 다른 일 실시예에 따라 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.10 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
도 11은 본 발명의 또 다른 일 실시예에 따라 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.11 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
도 12는 본 발명의 일 실시예에 따른 동축 케이블의 접합 방법의 흐름도이다12 is a flowchart of a method for splicing a coaxial cable according to an embodiment of the present invention
이하에서는 도면을 참조하여 본 발명의 실시예들을 상세히 설명한다. 본 발명의 하기 실시예는 본 발명을 구체화하기 위한 것일 뿐 본 발명의 권리 범위를 제한하거나 한정하지 않는다. 또한, 본 발명의 상세한 설명 및 실시예로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 유추할 수 있는 것은 본 발명의 권리범위에 속하는 것으로 해석된다.Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following examples of the present invention are for embodiing the present invention and do not limit or limit the scope of the present invention. In addition, what can be easily inferred by a person of ordinary skill in the art from the detailed description and examples of the present invention is construed as belonging to the scope of the present invention.
본 명세서, 특히, 특허 청구 범위에서에서 사용된 "상기" 및 이와 유사한 지시어는 단수 및 복수 모두를 지시하는 것일 수 있다. 또한, 본 개시에 따른 방법을 설명하는 단계들의 순서를 명백하게 지정하는 기재가 없다면, 기재된 단계들은 적당한 순서로 행해질 수 있다. 기재된 단계들의 기재 순서에 따라 본 개시가 한정되는 것은 아니다."The above" and similar designations used in this specification, in particular, in the claims may indicate both the singular and the plural. In addition, unless there is a description that clearly specifies the order of the steps describing the method according to the present disclosure, the described steps may be performed in a suitable order. The present disclosure is not limited according to the order of description of the described steps.
본 명세서에서 사용되는 용어에 대해 간략히 설명하고, 본 발명에 대해 구체적으로 설명하기로 한다.The terms used in the present specification will be briefly described, and the present invention will be described in detail.
명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미할 수 있다.Throughout the specification, when a part "includes" a certain component, it may mean that other components may be further included rather than excluding other components unless specifically stated to the contrary.
또한, 명세서 전체에서, 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함할 수 있다.In addition, throughout the specification, expressions in the singular may include plural expressions unless the context clearly indicates otherwise.
이하, 첨부된 도면을 참고하여 본원 발명의 일부 실시예들을 상세히 설명하기로 한다.Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 소형 내시경 카메라 모듈의 패드 예시적인 구조를 도시한다.1 shows an exemplary structure of a pad of a small endoscope camera module.
소형 내시경 카메라 모듈(100)은 단면적이 약 1mm2 혹은 그 이하의 사이즈를 가질 수 있다. 예를 들어, 소형 내시경 카메라 모듈(100)은 가로(w1) 1050um 이하 및 세로(h1) 1050um 이하의 사이즈를 가질 수 있으며, 작은 사이즈로 인해 척추 내시경 및 골밀도 내시경과 같은 최소 침습 수술에 이용될 수 있다.The small endoscope camera module 100 may have a cross-sectional area of about 1 mm 2 or less. For example, the small endoscope camera module 100 may have a size of 1050 um or less in width (w1) and 1050 um in height (h1), and due to its small size, it can be used for minimally invasive surgery such as spinal endoscopy and bone density endoscopy. have.
소형 내시경 카메라 모듈(100)은 후면의 회로 기판에 4 포인트 패드(pad)(110a, 110b, 110c, 110d)를 가질 수 있다. 예를 들어, 4 포인트 패드(110a, 110b, 110c, 110d)에는 각각 신호(signal), 전력(power), 접지(ground), 및 클럭(clock)의 전송을 위한 케이블이 접합될 수 있다. 또한, 4 point 패드(110a, 110b, 110c, 110d)는 가로(w2) 470um 이하 및 세로(h2) 400um 이하의 피치(pitch)를 가질 수 있다. The small endoscope camera module 100 may have four point pads 110a, 110b, 110c, and 110d on a circuit board at the rear side. For example, a cable for transmitting a signal, power, ground, and clock may be bonded to the four point pads 110a, 110b, 110c, and 110d, respectively. In addition, the four point pads 110a, 110b, 110c, and 110d may have a pitch of 470um or less in width (w2) and 400um or less in height (h2).
소형 내시경 카메라 모듈(100)의 작은 사이즈와 4 포인트 패드(110a, 110b, 110c, 110d)의 구조로 인하여, 케이블을 4 포인트 패드(110a, 110b, 110c, 110d)에 수직한 방향으로 접합하는 구조(이하, '수직 접합 구조')가 요구될 수 있다. 구체적으로, 수직 접합 구조에서는 4 포인트 패드(110a, 110b, 110c, 110d)를 갖는 소형 내시경 카메라 모듈(100)의 회로 기판과, 4 포인트 패드(110a, 110b, 110c, 110d)에 접합될 케이블의 길이 방향 축이 수직할 수 있다. 반면, 케이블을 패드에 평행한 방향으로 접합하는 구조(이하, '수평 접합 구조')에서는, 소형 내시경 카메라 모듈의 회로 기판과, 패드에 접합될 케이블의 길이 방향 축이 평행할 수 있다.Due to the small size of the small endoscope camera module 100 and the structure of the 4 point pads 110a, 110b, 110c, 110d, the cable is bonded to the 4 point pads 110a, 110b, 110c, 110d in a direction perpendicular to the structure (Hereinafter, a'vertical junction structure') may be required. Specifically, in the vertical bonding structure, the circuit board of the small endoscope camera module 100 having the 4- point pads 110a, 110b, 110c, and 110d, and the cable to be bonded to the 4- point pads 110a, 110b, 110c, 110d. The longitudinal axis can be vertical. On the other hand, in a structure in which the cable is bonded in a direction parallel to the pad (hereinafter, “horizontal bonding structure”), the circuit board of the small endoscope camera module and the longitudinal axis of the cable to be bonded to the pad may be parallel.
수평 접합 구조에 비하여, 수직 접합 구조는 4 포인트 패드(110a, 110b, 110c, 110d)와 케이블 사이의 접합 면적을 충분히 확보하기가 어려울 수 있다. 이에 따라, 단순히 케이블을 4 포인트 패드(110a, 110b, 110c, 110d)에 솔더링하게 되면, 케이블 및 소형 내시경 카메라 모듈(100)의 작은 움직임이나 작은 외력에도, 케이블이 4 포인트 패드(110a, 110b, 110c, 110d)로부터 쉽게 박리될 수 있다.Compared to the horizontal bonding structure, the vertical bonding structure may be difficult to sufficiently secure a bonding area between the four- point pads 110a, 110b, 110c, and 110d and the cable. Accordingly, if the cable is simply soldered to the 4- point pads 110a, 110b, 110c, and 110d, the cable can be applied to the 4- point pads 110a, 110b, even with a small movement or small external force of the cable and the small endoscope camera module 100. 110c, 110d) can be easily peeled off.
또한, 소형 내시경 카메라 모듈(100)은 400 x 400 픽셀수 이상의 고해상도를 가질 수 있다. 250x250 픽셀수와 같이, 저해상도의 소형 내시경 카메라 모듈은 신호선 및 신호선의 외주를 피복하는 절연체로만 이루어진 일반 케이블(discrete wire 혹은 single cable 라고도 함)을 이용하는 반면, 도 1에 도시된 고해상도의 소형 내시경 카메라 모듈(100)은 영상 신호를 손실 없이 전달하기 위해서는 동축 케이블을 이용할 수 있다. 동축 케이블의 구조적인 특징으로 인해, 일반 케이블 하네스 구조보다 동축 케이블 하네스 구조가 복잡할 수 있다.In addition, the small endoscope camera module 100 may have a high resolution of 400 x 400 pixels or more. As with the number of 250x250 pixels, the small endoscope camera module of low resolution uses a general cable (also referred to as a discrete wire or single cable) consisting only of an insulator covering the outer circumference of the signal line and the signal line, while the high resolution small endoscope camera module shown in FIG. 100 can use a coaxial cable to transmit the video signal without loss. Due to the structural characteristics of the coaxial cable, the coaxial cable harness structure may be more complex than the general cable harness structure.
이하에서는, 도 2 내지 도 12를 참조하여, 고해상도를 갖는 소형 내시경 카메라 모듈(100)에 적용될 수 있으며, 접합력이 우수한 반면 접합 과정은 단순한 동축 케이블 하네스 솔루션에 대해서 상세히 설명한다.Hereinafter, with reference to FIGS. 2 to 12, it can be applied to the small endoscope camera module 100 having high resolution, and the bonding process is excellent, while a simple coaxial cable harness solution will be described in detail.
도 2는 본 발명의 일 실시예에 따른 동축 케이블 접합 구조의 케이블 고정부를 도시한다.2 shows a cable fixing part of a coaxial cable splicing structure according to an embodiment of the present invention.
케이블 고정부(200)는 절연체(210)(혹은 절연층), 절연체(210)의 후면을 덮는 구리판(220)(혹은 구리층), 구리판(220)의 후면을 덮는 납판(230)(혹은 납판)을 포함할 수 있다.The cable fixing part 200 includes an insulator 210 (or an insulating layer), a copper plate 220 (or a copper layer) covering the rear surface of the insulator 210, and a lead plate 230 (or a lead plate) covering the rear surface of the copper plate 220 ) Can be included.
도 4에서 설명할 바와 같이, 절연체(210)의 전면은 소형 내시경 카메라 모듈(100)의 4 포인트 패드(110a, 110b, 110c, 110d)와 마주볼 수 있다. 전기를 통하지 않는 절연체(210)는 열에 강한 소재 또는 열경화성 소재로 구성될 수 있다. 예를 들어, 절연체(210)는 테프론으로 구성될 수 있다. 또 다른 예로, 절연체(210)는 에폭시, 페놀과 같은 인쇄회로기판(printed circuit board)에 일반적으로 이용되는 재질로 구성될 수 있다. 이에 따라, 절연체(210)는 복수의 동축 케이블의 중심선(core wire)들 사이의 쇼트(short)를 방지할 수 있고, 솔더링 작업에 의해 발생하는 열과 소형 내시경 카메라 모듈(100)에 의해 발생하는 열을 견뎌내어 열에 의해 케이블이 박리되는 현상을 방지할 수 있다.As will be described in FIG. 4, the front surface of the insulator 210 may face the four point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100. The insulator 210 that does not conduct electricity may be made of a heat-resistant material or a thermosetting material. For example, the insulator 210 may be made of Teflon. As another example, the insulator 210 may be made of a material generally used for a printed circuit board such as epoxy and phenol. Accordingly, the insulator 210 can prevent a short between the core wires of a plurality of coaxial cables, and heat generated by the soldering operation and heat generated by the small endoscope camera module 100 It can resist the phenomenon that the cable is peeled off due to heat.
절연체(210)의 측면의 적어도 일부는 동축 케이블이 배열될 수 있는 오목부(212a, 212b, 212c, 212d)를 포함할 수 있다. 오목부(212a, 212b, 212c, 212d)는 케이블의 배열을 용이하게 하기 위하여 절연체(210)의 일부에 오목하게 파인 홈(groove), 틈(gap), 슬릿(slit), 또는 구멍(hole)일 수 있다. At least a portion of the side surface of the insulator 210 may include recesses 212a, 212b, 212c, and 212d through which coaxial cables may be arranged. The concave portions 212a, 212b, 212c, 212d are grooves, gaps, slits, or holes that are concave in a part of the insulator 210 to facilitate cable arrangement. Can be
도 2에 도시된 바와 같이, 4 포인트 패드(110a, 110b, 110c, 110d)에 연결될 4개의 케이블이 배열될 수 있도록, 절연체(210)는 에지(edge)에 4개의 오목부(212a, 212b, 212c, 212d)를 포함할 수 있다. 예를 들어, 절연체(210)의 에지에 위치하는 4개의 오목부(212a, 212b, 212c, 212d) 중 3개에는 각각 신호, 전력, 및 클럭의 전송을 위한 동축 케이블이 접합될 수 있다. 또한, 나머지 한 개의 오목부에는 접지를 위한 일반 케이블이 접합될 수 있다.As shown in FIG. 2, the insulator 210 has four recesses 212a, 212b at the edge so that four cables to be connected to the four point pads 110a, 110b, 110c, and 110d can be arranged. 212c, 212d). For example, three of the four recesses 212a, 212b, 212c, and 212d positioned at the edge of the insulator 210 may be bonded with coaxial cables for transmitting signals, power, and clocks, respectively. In addition, a general cable for grounding may be bonded to the other recessed part.
도 2에 도시된 바와 같이, 오목부(212a, 212b, 212c, 212d)의 크기 및 형상은 동일하고 규칙적일 수 있다. 그러나, 공정 과정에 따라 오목부(212a, 212b, 212c, 212d)의 크기 및 형상은 서로 상이하고 불규칙할 수 있다.As shown in FIG. 2, the size and shape of the concave portions 212a, 212b, 212c, and 212d may be the same and may be regular. However, the size and shape of the concave portions 212a, 212b, 212c, and 212d may be different from each other and may be irregular depending on the process process.
구리판(220) 및 납판(230)은 절연체(210)와 동일한 형상을 가질 수 있다. 도 5에서 후술할 바와 같이, 구리판(220)은 절연체(210)와 동일한 공정을 거치면서 동일한 형상을 가질 수 있으며, 납판(230)은 가공이 완료된 구리판(220)에 디핑(dipping) 작업을 통해 생성될 수 있다.The copper plate 220 and the lead plate 230 may have the same shape as the insulator 210. As will be described later in FIG. 5, the copper plate 220 may have the same shape while passing through the same process as the insulator 210, and the lead plate 230 is processed through a dipping operation on the finished copper plate 220. Can be created.
구리판(220)은 동축 케이블의 실드선(shield wire)의 적어도 일부에 접촉하여, 접지를 위한 전극 역할을 수행할 수 있다. 구리판(220)은 절연체(210)와 동일한 형상을 가지므로, 도 3을 참조하여 후술할 바와 같이, 구리판(220)에 의해 복수의 동축 케이블들 사이의 공통 접지가 용이하게 구현될 수 있다.The copper plate 220 may contact at least a portion of a shield wire of a coaxial cable and may serve as an electrode for grounding. Since the copper plate 220 has the same shape as the insulator 210, as will be described later with reference to FIG. 3, common grounding between the plurality of coaxial cables can be easily implemented by the copper plate 220.
또한, 납판(230)은 케이블 고정부(200)에 배열된 케이블들을 고정하는 역할을 수행할 수 있다. 또한, 케이블 고정부(200)의 납판(230)과 동축 케이블 사이의 접합력에 의해 외력이 분산되므로, 케이블들과 4 포인트 패드(110a, 110b, 110c, 110d)가 쉽게 박리되는 현상을 방지할 수 있다.In addition, the lead plate 230 may serve to fix the cables arranged in the cable fixing part 200. In addition, since the external force is dispersed by the bonding force between the lead plate 230 of the cable fixing part 200 and the coaxial cable, the phenomenon that the cables and the 4- point pads 110a, 110b, 110c, and 110d are easily separated can be prevented. have.
케이블 고정부(200)의 최대 가로 길이는 4 포인트 패드(110a, 110b, 110c, 110d)의 가로 방향 피치(w2)보다 짧을 수 있고, 케이블 고정부(200)의 최대 세로 길이는 4 포인트 패드(110a, 110b, 110c, 110d)의 세로 방향 피치(h2)보다 짧을 수 있다. 따라서, 본 발명에 개시된 동축 케이블 접합 구조에 의하면, 소형 내시경 카메라 모듈(100)의 크기가 실질적으로 증가하지 않을 수 있으므로, 최소 침습 수술에 유리할 수 있다.The maximum horizontal length of the cable fixing part 200 may be shorter than the horizontal pitch w2 of the 4- point pads 110a, 110b, 110c, and 110d, and the maximum vertical length of the cable fixing part 200 is a 4-point pad ( It may be shorter than the vertical pitch h2 of 110a, 110b, 110c, and 110d. Therefore, according to the coaxial cable bonding structure disclosed in the present invention, since the size of the small endoscope camera module 100 may not be substantially increased, it may be advantageous for minimally invasive surgery.
도 3은 본 발명의 일 실시예에 따른 케이블 고정부와 동축 케이블의 배열을 도시한다.3 shows an arrangement of a cable fixing part and a coaxial cable according to an embodiment of the present invention.
동축 케이블(310)은 중심선(312), 중심선(312)의 외주를 피복하는 내부절연체(314), 내부절연체의 외주를 피복하는 실드(316), 실드(316)의 외주를 피복하는 외부절연체(318)를 포함할 수 있다. 중심선(312)은 소형 내시경 카메라 모듈(100)의 영상 신호, 전력, 및 클럭의 전송을 위한 전선일 수 있다. 내부절연체(314)는 중심선(312)과 실드(316) 사이의 쇼트를 방지할 수 있다. 실드(316) 혹은 실드선은 외부요인을 차폐하여 중심선의 신호 왜곡 및 감쇠를 방지할 수 있으며, 재킷(jacket)으로도 불리는 외부 절연체는 동축 케이블(310)을 보호할 수 있다.The coaxial cable 310 includes a center line 312, an inner insulator 314 covering the outer periphery of the center line 312, a shield 316 covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield 316 ( 318). The center line 312 may be a wire for transmitting an image signal, power, and a clock of the small endoscope camera module 100. The internal insulator 314 may prevent a short between the center line 312 and the shield 316. The shield 316 or the shield wire may shield external factors to prevent signal distortion and attenuation of the center line, and an external insulator, also called a jacket, may protect the coaxial cable 310.
300a, 300b, 및 300c에 도시된 바와 같이, 동축 케이블(310)은 절연체(210)의 측면에 배열될 수 있다. 전술한 바와 같이, 절연체(210)는 동축 케이블(310) 배열을 가이드 하기 위하여, 측면에 오목부(212a, 212b, 212c, 212d)를 포함할 수 있고, 동축 케이블(310)은 오목부(212a, 212b, 212c, 212d) 상에 위치할 수 있다.As shown in 300a, 300b, and 300c, the coaxial cable 310 may be arranged on the side of the insulator 210. As described above, the insulator 210 may include concave portions 212a, 212b, 212c, 212d on the side surfaces to guide the coaxial cable 310 arrangement, and the coaxial cable 310 is concave portion 212a , 212b, 212c, 212d).
300a는 동축 케이블(310) 및 동축 케이블(310)과 이격된 케이블 고정부(200)를 도시하고, 300b는 동축 케이블(310) 및 동축 케이블(310)이 오목부(212a, 212b, 212c, 212d) 상에 위치한 케이블 고정부(200)를 도시한다. 또한, 300c는 300b의 도면에 대한 AA' 방향 단면을 도시한다.300a shows a coaxial cable 310 and a cable fixing part 200 spaced apart from the coaxial cable 310, and 300b shows a coaxial cable 310 and a coaxial cable 310 with recesses 212a, 212b, 212c, 212d ) Shows the cable fixing part 200 located on the above. Further, 300c shows a cross section in the AA′ direction of the drawing of 300b.
300b 및 300c에 도시된 바와 같이, 중심선(312), 내부절연체(314), 및 실드(316)가 케이블 고정부(200)의 전면부터 순차적으로 노출되며, 외부절연체(318)의 는 케이블 고정부(200)의 후면과 이격될 수 있다.As shown in 300b and 300c, the center line 312, the inner insulator 314, and the shield 316 are sequentially exposed from the front of the cable fixing part 200, and the outer insulator 318 is a cable fixing part It can be separated from the back of the 200.
300c를 참조하면, 케이블 고정부(200)의 구리판(220)이 동축 케이블(310)의 실드(316)의 적어도 일부에 접촉하도록, 동축 케이블(310)은 절연체(210)의 측면에 배열될 수 있다. Referring to 300c, the coaxial cable 310 may be arranged on the side of the insulator 210 so that the copper plate 220 of the cable fixing part 200 contacts at least a part of the shield 316 of the coaxial cable 310. have.
또한, 300b 및 300c를 참조하면, 케이블 고정부(200)의 납판(230)의 적어도 일부를 가열함으로써, 납판(230)이 동축 케이블(310)의 실드(316)의 적어도 일부에 솔더링 될 수 있다. 본 발명의 일 실시예에 따른 케이블 고정부(200)를 이용하면, 동축 케이블(310)과 맞닿는 납판(230)의 일부분을 정확히 가열하지 않아도 되므로, 솔더링 작업이 용이할 수 있다. 예를 들어, 납판(230)이 케이블 고정부(200)의 후면 전체를 덮고 있으므로, 상대적으로 가열이 용이한 납판(230)의 중앙 부분을 납땜 접합 온도까지 가열하여, 구리판(220)이 실드(316)의 적어도 일부에 접촉한 상태에서 납판(230)이 실드(316)의 적어도 일부에 고정될 수 있다. In addition, referring to 300b and 300c, by heating at least a portion of the lead plate 230 of the cable fixing part 200, the lead plate 230 may be soldered to at least a portion of the shield 316 of the coaxial cable 310. . When the cable fixing part 200 according to an embodiment of the present invention is used, a part of the soldering plate 230 in contact with the coaxial cable 310 does not need to be accurately heated, so that the soldering operation can be facilitated. For example, since the lead plate 230 covers the entire rear surface of the cable fixing part 200, the central portion of the lead plate 230, which is relatively easy to heat, is heated to the soldering temperature, so that the copper plate 220 is shielded. The lead plate 230 may be fixed to at least a part of the shield 316 in a state in contact with at least a part of the 316.
300c에 도시된 바와 같이, 납판(230)은 실드(316)의 적어도 일부에 솔더링되지만, 외부절연체(318)에는 솔더링되지 않을 수 있다. 그러나, 납판(230)이 동축 케이블(310)을 고정하는 방법은 이에 한정되지 않는다. 예를 들어, 납판(230)은 실드(316)의 적어도 일부, 실드(316)와 외부절연체(318) 사이의 경계, 및 외부절연체(318)의 적어도 일부에 같이 솔더링될 수 있다.As shown in 300c, the lead plate 230 is soldered to at least a portion of the shield 316, but may not be soldered to the external insulator 318. However, the method of fixing the coaxial cable 310 by the lead plate 230 is not limited thereto. For example, the lead plate 230 may be soldered to at least a portion of the shield 316, a boundary between the shield 316 and the external insulator 318, and at least a portion of the external insulator 318.
본 발명의 일 실시예에 따른 케이블 고정부(200)를 이용하면, 동축 케이블(310)의 내부절연체(314)의 길이를 0.1mm 이하로 줄일 수 있다. 이에 따라, 실드(316)가 중심선(312)에 매우 근접한 상태에서 외부요인을 효율적으로 차폐하여, 중심선(312)의 신호 왜곡 및 감쇠가 최소화될 수 있고, 소형 내시경 카메라 모듈(100)의 고해상도 영상 신호를 손실 없이 충분한 길이로 전송할 수 있다. When the cable fixing part 200 according to an embodiment of the present invention is used, the length of the inner insulator 314 of the coaxial cable 310 can be reduced to 0.1 mm or less. Accordingly, by effectively shielding external factors in a state where the shield 316 is very close to the center line 312, signal distortion and attenuation of the center line 312 can be minimized, and a high-resolution image of the small endoscope camera module 100 The signal can be transmitted in sufficient length without loss.
또한, 300c를 참조하면, 중심선(312)과 실드(316) 사이의 쇼트를 방지하기 위하여, 케이블 고정부(200)에서의 절연체(210)와 구리판(220) 사이의 경계(330)는 동축 케이블(310)에서의 내부절연체(314)와 중심선(312) 사이의 경계(340)와 소정의 거리 이상으로 이격될 수 있다.Further, referring to 300c, in order to prevent a short circuit between the center line 312 and the shield 316, the boundary 330 between the insulator 210 and the copper plate 220 in the cable fixing part 200 is a coaxial cable. The boundary 340 between the inner insulator 314 and the center line 312 at 310 may be spaced apart by a predetermined distance or more.
도 4는 본 발명의 일 실시예에 따른 동축 케이블의 접합 구조를 도시한다.4 shows a joint structure of a coaxial cable according to an embodiment of the present invention.
구체적으로, 400a는 복수의 동축 케이블(310a, 310c, 310d), 케이블 고정부(200), 및 소형 카메라 모듈(100) 사이의 접합 구조를 도시하고, 400b는 400a의 접합 구조의 BB' 방향 단면을 도시하고, 400c는 400a의 접합구조의 B''B''' 방향 단면을 도시한다.Specifically, 400a shows a bonding structure between a plurality of coaxial cables 310a, 310c, and 310d, the cable fixing part 200, and the small camera module 100, and 400b is a cross section in the BB' direction of the bonding structure of 400a And 400c shows a cross section in the direction B"B"" of the junction structure of 400a.
케이블 고정부(200)의 오목부(212a, 212b, 212c, 212d)는 절연체(210)의 측면의 에지(edge)에 위치할 수 있다 (이하, '오목한 에지'라 한다). 또한, 복수의 동축 케이블(310a, 310c, 310d) 사이의 공통 접지(common ground)를 위해, 복수의 동축 케이블(310a, 310c, 310d)의 실드들(316a, 316c, 316d)이 케이블 고정부(200)의 구리판(220)에 함께 접촉하도록, 복수의 동축 케이블(310a, 310b, 310d)은 케이블 고정부(200)의 오목한 에지(212a, 212b, 212c, 212d)에 배열될 수 있다. 또한, 신호선(312b) 및 신호선(312b)의 외주를 피복하는 절연체(314b)를 포함하는 일반 케이블이 오목한 에지(212a, 212b, 212c, 212d) 중 어느 하나에 배열될 수 있으며, 복수의 동축 케이블(310a, 310c, 310d) 사이의 공통 접지(common ground)를 위해, 일반 케이블의 신호선(312b)은 케이블 고정부(200)의 구리판(220)에 접촉할 수 있다. 복수의 동축 케이블(310a, 310c, 310d)은 각각 신호, 전력, 및 클럭을 위한 패드들(110a, 110c, 110d)에 접합될 수 있으며, 일반 케이블(312b)은 접지를 위한 패드(110b)에 접합될 수 있다.The concave portions 212a, 212b, 212c, and 212d of the cable fixing portion 200 may be located at an edge of the side surface of the insulator 210 (hereinafter, referred to as'concave edge'). In addition, for a common ground between the plurality of coaxial cables 310a, 310c, 310d, the shields 316a, 316c, 316d of the plurality of coaxial cables 310a, 310c, 310d are provided with a cable fixing part ( A plurality of coaxial cables 310a, 310b, 310d may be arranged on the concave edges 212a, 212b, 212c, 212d of the cable fixing part 200 so as to contact the copper plate 220 of 200 together. In addition, a general cable including a signal line 312b and an insulator 314b covering the outer periphery of the signal line 312b may be arranged on any one of the concave edges 212a, 212b, 212c, 212d, and a plurality of coaxial cables For a common ground between (310a, 310c, 310d), the signal line 312b of a general cable may contact the copper plate 220 of the cable fixing part 200. A plurality of coaxial cables 310a, 310c, 310d may be bonded to the pads 110a, 110c, 110d for signal, power, and clock, respectively, and the general cable 312b is connected to the pad 110b for grounding. Can be joined.
본 발명의 일 실시예에 따른 케이블 고정부(200)를 이용하면, 한번의 솔더링 작업으로 모든 복수의 동축 케이블(310a, 310c, 310d) 및 일반 케이블(310b)을 케이블 고정부(200)에 고정할 수 있다. 예를 들어, 납판(230)이 케이블 고정부(200)의 후면 전체를 덮고 있으므로, 상대적으로 가열이 용이한 납판(230)의 중앙 부분을 납땜 접합 온도까지 가열하여, 구리판(220)이 복수의 동축 케이블(310a, 310c, 310d)의 실드들(316a, 316c, 316d) 및 일반 케이블(310b)의 신호선(312b)에 접촉한 상태에서 한번에 모든 복수의 동축 케이블(310a, 310c, 310d) 및 일반 케이블(312b)을 고정할 수 있다.Using the cable fixing part 200 according to an embodiment of the present invention, all a plurality of coaxial cables 310a, 310c, 310d and general cables 310b are fixed to the cable fixing part 200 with a single soldering operation. can do. For example, since the lead plate 230 covers the entire rear surface of the cable fixing part 200, the central part of the lead plate 230, which is relatively easy to heat, is heated to the soldering temperature, so that the copper plate 220 In contact with the shields 316a, 316c, 316d of the coaxial cables 310a, 310c, 310d and the signal line 312b of the general cable 310b, all a plurality of coaxial cables 310a, 310c, 310d and general The cable 312b can be fixed.
또한, 400a 및 400b에 도시된 바와 같이, 절연체(210)의 전면이 소형 내시경 카메라 모듈(100)과 마주할 수 있고, 복수의 동축 케이블(310a, 310c, 310d)의 중심선들(312a, 312c, 312d)과 일반 케이블(310b)의 신호선(312b)을 4 포인트 패드(110a, 110b, 110c, 110d)에 솔더링하여 복수의 동축 케이블(310a, 310c, 310d)의 중심선들(312a, 312c, 312d) 및 일반 케이블(310b)의 신호선(312b)과 4 포인트 패드(110a, 110b, 110c, 110d)가 전기적으로 접속될 수 있다.In addition, as shown in 400a and 400b, the front of the insulator 210 may face the small endoscope camera module 100, and the center lines 312a, 312c, and the plurality of coaxial cables 310a, 310c, 310d, 312d) and the signal line 312b of the general cable 310b are soldered to the 4- point pads 110a, 110b, 110c, 110d, and the center lines 312a, 312c, 312d of the plurality of coaxial cables 310a, 310c, 310d And the signal line 312b of the general cable 310b and the four point pads 110a, 110b, 110c, 110d may be electrically connected.
도 5는 본 발명의 일 실시예에 따른 인쇄회로기판을 이용하여 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.5 is a view for explaining a method of generating a cable fixing unit using a printed circuit board according to an embodiment of the present invention.
일반적으로, 인쇄회로기판(500)은 절연체(혹은 절연층) 및 구리판(혹은 구리층)을 포함할 수 있다. 따라서, 인쇄회로기판(500)를 이용하면, 도 2 내지 도 4의 케이블 고정부(200)를 용이하게 제작할 수 있다.In general, the printed circuit board 500 may include an insulator (or insulating layer) and a copper plate (or copper layer). Therefore, if the printed circuit board 500 is used, the cable fixing part 200 of FIGS. 2 to 4 can be easily manufactured.
도시된 바와 같이, 절연체 및 구리판을 포함하는 인쇄회로기판(500)에 소정의 간격으로 규칙적으로 구멍들(520a, 520b, 520c, 520d, 520e, 520f)이 형성될 수 있다. 예를 들어, PCB 용 라우터 비트 혹은 드릴 비트를 이용하여, 인쇄회로기판(500)에 규칙적인 구멍들(520a, 520b, 520c, 520d, 520e, 520f)이 형성될 수 있다. As shown, holes 520a, 520b, 520c, 520d, 520e, and 520f may be regularly formed at predetermined intervals in the printed circuit board 500 including an insulator and a copper plate. For example, regular holes 520a, 520b, 520c, 520d, 520e and 520f may be formed in the printed circuit board 500 by using a router bit or a drill bit for a PCB.
또한, 구멍들(520a, 520b, 520c, 520d, 520e, 520f) 각각의 일부는 케이블 고정부(200)의 오목부(212a, 212b, 212c, 212d)로 이용될 수 있으므로, 동축 케이블(310)의 배열을 위해, 구멍들(520a, 520b, 520c, 520d, 520e, 520f) 각각은 동축 케이블(310)의 지름보다 큰 지름을 가질 수 있고, 원형의 형상을 가질 수 있다. 또한, 복수의 동축 케이블(310a, 310b, 310c, 310d)의 배열을 위해, 구멍들(520a, 520b, 520c, 520d, 520e, 520f) 사이의 피치(w4, h4)는 소형 내시경 카메라 모듈(100)의 4 포인트 패드(110a, 110b, 110c, 110d)의 피치(w2, h2)와 동일할 수 있다.In addition, a portion of each of the holes 520a, 520b, 520c, 520d, 520e, and 520f may be used as concave portions 212a, 212b, 212c, 212d of the cable fixing portion 200, so the coaxial cable 310 For the arrangement of, each of the holes 520a, 520b, 520c, 520d, 520e, and 520f may have a diameter greater than the diameter of the coaxial cable 310, and may have a circular shape. In addition, for the arrangement of a plurality of coaxial cables (310a, 310b, 310c, 310d), the pitches (w4, h4) between the holes (520a, 520b, 520c, 520d, 520e, 520f) is a small endoscope camera module 100 ) May be the same as the pitches w2 and h2 of the four- point pads 110a, 110b, 110c, and 110d.
도시된 바와 같이, 구멍들(520a, 520b, 520c, 520d, 520e, 520f)의 크기, 형상, 및 피치가 일정할 수 있으나, 작업 과정에서의 오차로 인하여 구멍들(520a, 520b, 520c, 520d, 520e, 520f)의 크기, 형상, 및 피치가 불규칙할 수도 있다.As shown, the size, shape, and pitch of the holes 520a, 520b, 520c, 520d, 520e, and 520f may be constant, but due to an error in the working process, the holes 520a, 520b, 520c, 520d , 520e, 520f) may have irregular sizes, shapes, and pitches.
구멍들(520a, 520b, 520c, 520d, 520e, 520f)이 형성된 인쇄회로기판(500)은 소정의 크기의 단위 인쇄회로기판(510)으로 분할될 수 있다. 구체적으로, 구멍(520a, 520b, 520d, 520e)의 일부가 단위 인쇄회로기판(510)의 오목부(512a, 512b, 512c, 512d)가 되도록, 구멍들(520a, 520b, 520c, 520d, 520e, 520f)이 형성된 인쇄회로기판(500)으로부터 단위 인쇄회로기판(510)이 분할될 수 있다.The printed circuit board 500 in which the holes 520a, 520b, 520c, 520d, 520e, and 520f are formed may be divided into unit printed circuit boards 510 having a predetermined size. Specifically, the holes 520a, 520b, 520c, 520d, 520e so that some of the holes 520a, 520b, 520d, 520e become concave portions 512a, 512b, 512c, 512d of the unit printed circuit board 510 The unit printed circuit board 510 may be divided from the printed circuit board 500 on which the, 520f) is formed.
또한, 단위 인쇄회로기판(500)의 구리판 상에 납을 디핑하여, 도 2 내지 도 4의 절연체(210), 구리판(220), 및 납판(230)을 포함하는 케이블 고정부(200)를 형성할 수 있다.In addition, by dipping lead on the copper plate of the unit printed circuit board 500, the cable fixing part 200 including the insulator 210, the copper plate 220, and the lead plate 230 of FIGS. 2 to 4 is formed. can do.
도 6은 도 5의 방법에 따라 생성된 예시적인 케이블 고정부를 도시한다.6 shows an exemplary cable anchor produced according to the method of FIG. 5.
절연층(610) 및 구리층(620)을 포함하는 인쇄회로기판(600)에 규칙적인 구멍들(660a, 660b, 660c, 660d)이 형성되고, 구멍들(660a, 660b, 660c, 660d)을 갖는 인쇄회로기판(600)으로부터 소정의 크기의 단위 인쇄회로기판(610)이 분할될 수 있다. 이후, 단위 인쇄회로기판(630)의 구리층(620) 상에 납을 디핑하여, 절연체(640), 구리판(650), 및 납판(660)을 포함하는 케이블 고정부(630)를 형성할 수 있다. Regular holes 660a, 660b, 660c, 660d are formed in the printed circuit board 600 including the insulating layer 610 and the copper layer 620, and the holes 660a, 660b, 660c, 660d are formed. A unit printed circuit board 610 of a predetermined size may be divided from the printed circuit board 600 having a predetermined size. Thereafter, by dipping lead on the copper layer 620 of the unit printed circuit board 630, a cable fixing part 630 including the insulator 640, the copper plate 650, and the lead plate 660 may be formed. have.
구멍을 뚫는 공정과, 납 디핑 공정, 및 단위 인쇄회로기판(630)의 분할 공정은 그 순서가 변경될 수 있다. 예를 들어, 인쇄회로기판(600)에 구멍들(660a, 660b, 660c, 660d)을 형성한 뒤, 구멍들(660a, 660b, 660c, 660d)이 형성된 인쇄회로기판(600)의 구리층(620)에 납을 디핑하고, 이후 구멍들(660a, 660b, 660c, 660d) 및 디핑된 납을 갖는 인쇄회로기판(600)으로부터 단위 인쇄회로기판(630)이 분할될 수 있다. 또 다른 예로, 구리층(610)에 납을 먼저 디핑한 뒤, 납이 디핑된 인쇄회로기판(600)에 구멍들(660a, 660b, 660c, 660d)을 형성하고, 구멍들(660a, 660b, 660c, 660d) 및 디핑된 납을 갖는 인쇄회로기판(600)으로부터 단위 인쇄회로기판(630)이 분할될 수 있다. 그러나, 납 부스러기를 만들지 않기 위해서는, 납 디핑 공정을 마지막에 수행하는 것이 유리할 수 있다.The order of the drilling process, the lead dipping process, and the division process of the unit printed circuit board 630 may be changed. For example, after forming holes 660a, 660b, 660c, 660d in the printed circuit board 600, the copper layer of the printed circuit board 600 in which holes 660a, 660b, 660c, 660d are formed ( After dipping lead into 620, the unit printed circuit board 630 may be divided from the printed circuit board 600 having the holes 660a, 660b, 660c, and 660d and the dipped lead. As another example, after first dipping lead in the copper layer 610, holes 660a, 660b, 660c, 660d are formed in the printed circuit board 600 in which lead is dipped, and the holes 660a, 660b, The unit printed circuit board 630 may be divided from the printed circuit board 600 including 660c and 660d) and diped lead. However, in order not to create lead crumbs, it may be advantageous to perform the lead dipping process last.
도시된 바와 같이, 인쇄회로기판(600)의 구멍의 일부는 단위 인쇄회로기판(610)의 측면에 위치하는 오목부(642a, 642b, 642c, 642d)가 될 수 있다.As shown, some of the holes of the printed circuit board 600 may be recessed portions 642a, 642b, 642c, and 642d positioned on the side surfaces of the unit printed circuit board 610.
도 7은 본 발명의 일 실시예에 따른 접착층을 포함하는 케이블 고정부를 도시한다.7 shows a cable fixing part including an adhesive layer according to an embodiment of the present invention.
도시된 바와 같이, 절연체(210)는 절연체(210)의 전면을 덮는 접착층(710)을 포함할 수 있다. 이에 따라, 케이블 고정부(700)는 전면부터 후면까지 접착층(710), 절연체(210), 구리판(220), 및 납판(230)을 순차적으로 포함할 수 있다.As shown, the insulator 210 may include an adhesive layer 710 covering the entire surface of the insulator 210. Accordingly, the cable fixing part 700 may sequentially include an adhesive layer 710, an insulator 210, a copper plate 220, and a lead plate 230 from the front to the rear.
접착층(710)은 소형 카메라 모듈(100)의 회로 기판에 고정되어, 동축 케이블과 소형 카메라 모듈 사이의 접합을 용이하게 할 수 있다. 또한, 접착층(710)은 절연체(210)와 동일한 형상을 가질 수 있다. 대안적으로, 접착층(710)은 절연체(210)보다 작을 수 있으며, 절연체(210)보다 작은 접착층(710)은 접합 면적을 확보하기 위하여 절연체(210)의 중심 영역에 위치할 수 있다. The adhesive layer 710 may be fixed to the circuit board of the small camera module 100 to facilitate bonding between the coaxial cable and the small camera module. In addition, the adhesive layer 710 may have the same shape as the insulator 210. Alternatively, the adhesive layer 710 may be smaller than the insulator 210, and the adhesive layer 710 smaller than the insulator 210 may be located in a central region of the insulator 210 to secure a bonding area.
도 8은 본 발명의 일 실시예에 따른 접착층을 포함하는 케이블 고정부를 이용한 동축 케이블의 접합 구조를 도시한다.8 shows a joint structure of a coaxial cable using a cable fixing part including an adhesive layer according to an embodiment of the present invention.
구체적으로, 800a는 복수의 동축 케이블(310a, 310c, 310d), 케이블 고정부(700), 및 소형 카메라 모듈(100) 사이의 접합 구조를 도시하고, 800b는 800a의 접합 구조의 CC' 방향 단면을 도시하고, 800c는 800a의 접합구조의 C''C''' 방향 단면을 도시한다.Specifically, 800a shows a bonding structure between a plurality of coaxial cables 310a, 310c, and 310d, a cable fixing part 700, and a small camera module 100, and 800b is a cross section in the CC' direction of the bonding structure of 800a And 800c shows a cross section in the C''C''' direction of the junction structure of 800a.
절연체(210), 구리판(220), 및 납판(230)의 구조는 도 4를 통해 전술한 바와 동일할 수 있으므로, 중복되는 내용은 생략한다.Since the structures of the insulator 210, the copper plate 220, and the lead plate 230 may be the same as those described above with reference to FIG. 4, overlapping contents are omitted.
800a, 800b, 및 800c에 도시된 바와 같이, 접착층(710)의 전면이 소형 내시경 카메라 모듈(100)의 4 포인트 패드(110a, 110b, 110c, 110d)를 포함하는 회로 기판에 접착될 수 있다. 또한, 복수의 동축 케이블(310a, 310c, 310d)의 중심선들(312a, 312b, 312c, 312d) 및 일반 케이블(310b)의 신호선(312b)을 4 포인트 패드(110a, 110b, 110c, 110d)에 솔더링하여 복수의 동축 케이블(310a, 310b, 310c, 310d)의 중심선들(312a, 312b, 312c, 312d) 및 일반 케이블(310b)의 신호선(312b)과 4 포인트 패드(110a, 110b, 110c, 110d)가 전기적으로 접속될 수 있다. 이에 따라, 복수의 동축 케이블(310a, 310b, 310c, 310d)과 케이블 고정부(200) 사이의 충분한 접합력을 확보할 수 있다.As shown in 800a, 800b, and 800c, the front surface of the adhesive layer 710 may be adhered to a circuit board including the four point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100. In addition, the center lines 312a, 312b, 312c, 312d of the plurality of coaxial cables 310a, 310c, 310d and the signal line 312b of the general cable 310b are connected to the 4- point pads 110a, 110b, 110c, 110d. Soldered to the center lines 312a, 312b, 312c, 312d of the plurality of coaxial cables 310a, 310b, 310c, 310d, the signal line 312b of the general cable 310b and the 4- point pads 110a, 110b, 110c, 110d ) Can be electrically connected. Accordingly, sufficient bonding force between the plurality of coaxial cables 310a, 310b, 310c, and 310d and the cable fixing part 200 can be secured.
접착층(710)과 소형 카메라 모듈 사이의 접합력에 의해 외력이 분산되므로, 복수의 동축 케이블(310a, 310c, 310d) 및 일반 케이블(310b)과 4 포인트 패드(110a, 110b, 110c, 110d)가 쉽게 박리되는 현상을 방지할 수 있다.Since the external force is dispersed by the bonding force between the adhesive layer 710 and the small camera module, a plurality of coaxial cables 310a, 310c, 310d, general cables 310b and 4- point pads 110a, 110b, 110c, 110d are easily It can prevent peeling.
도 9는 본 발명의 일 실시예에 따른 확장된 동축 케이블의 접합 구조를 도시한다.9 shows a splicing structure of an extended coaxial cable according to an embodiment of the present invention.
도시된 바와 같이, 소형 내시경 카메라 모듈 및 이미지 센서의 패드의 구조에 따라서, 케이블 고정부(900)는 확장될 수 있다. 구체적으로, 케이블 고정부(900)의 절연체(922)의 측면은 소정의 거리로 반복되는 복수의 오목부(930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d)를 소형 내시경 카메라 모듈 패드의 개수만큼 포함할 수 있다. 또한, 복수의 동축 케이블은 오목부(930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d) 상에 배열되어, 내시경 카메라 모듈 패드에 전기적으로 접합될 수 있다. 또한, 접지를 위한 일반 케이블이 오목부(930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d) 중 어느 하나에 배열되어, 내시경 카메라 모듈 패드에 전기적으로 접합될 수 있다.As shown, according to the structure of the pad of the small endoscope camera module and the image sensor, the cable fixing part 900 may be extended. Specifically, the side surface of the insulator 922 of the cable fixing part 900 is a small endoscope camera module pad with a plurality of concave parts 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d repeated at a predetermined distance. It can contain as many as In addition, a plurality of coaxial cables may be arranged on the concave portions 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d and electrically bonded to the endoscope camera module pad. In addition, a general cable for grounding is arranged in any one of the concave portions 930a, 930b, 930c, 930d, 940a, 940b, 940c, 940d, and may be electrically bonded to the endoscope camera module pad.
이에 따라, 본 발명의 일 실시예에 따르면, 도 1 내지 도 8을 통해 전술한 2행 2열의 4 포인트 패드 이외에도, 1행 n열의 n 포인트 패드, 2행 m열의 2m 포인트 패드에 적합한 케이블 고정부(900)를 형성할 수 있다. 예를 들어, 도시된 바와 같이, 일부의 오목부(930a, 930b, 930c, 930d)는 절연체(922)의 제1 측면에 위치하고, 나머지 오목부(940a, 940b, 940c, 940d)는 절연체(922)의 제2 측면에 위치할 수 있다. 제1 측면과 제2 측면은 서로 반대 측면일 수 있고, 따라서, 복수의 동축 케이블은 케이블 고정부(900) 상에 2행 m열로 배열될 수 있다.Accordingly, according to an embodiment of the present invention, in addition to the 4-point pad of 2 rows and 2 columns described above through FIGS. (900) can be formed. For example, as shown, some of the concave portions 930a, 930b, 930c, 930d are located on the first side of the insulator 922, and the remaining concave portions 940a, 940b, 940c, 940d are insulators 922 ) Can be located on the second side. The first side and the second side may be opposite sides, and thus, a plurality of coaxial cables may be arranged in 2 rows and m columns on the cable fixing part 900.
케이블 고정부(900)에 포함된 절연체(922), 구리판(924), 납판(926), 및 접착층(928)의 구조 및 효과에 대해서는, 도 1 내지 도 8을 통해 전술한 바와 동일할 수 있으므로, 중복되는 설명은 생략한다.The structure and effect of the insulator 922, the copper plate 924, the lead plate 926, and the adhesive layer 928 included in the cable fixing part 900 may be the same as described above with reference to FIGS. 1 to 8. , Redundant description will be omitted.
도 10은 본 발명의 또 다른 일 실시예에 따라 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.10 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
도시된 바와 같이, 케이블 고정부(1030)의 오목부(1040a, 1040b, 1040c, 1040d) 는 절연체(1032)의 측면에 위치하면서, 측면 에지와 이격될 수 있다. 예를 들어, 오목부(1040a, 1040b, 1040c, 1040d) 는 절연체의 측면 중앙 부분에 위치할 수 있다. 또한, 동축 케이블(1040)은 절연체의 측면 중앙 부분에 위치하는 오목부(1040a, 1040b, 1040c, 1040d) 에 배열될 수 있다.As shown, the concave portions 1040a, 1040b, 1040c, and 1040d of the cable fixing portion 1030 may be spaced apart from the side edges while being positioned on the side surfaces of the insulator 1032. For example, the concave portions 1040a, 1040b, 1040c, and 1040d may be located in the central side of the insulator. In addition, the coaxial cable 1040 may be arranged in the concave portions 1040a, 1040b, 1040c, and 1040d located in the central portion of the side of the insulator.
인쇄회로기판(1000)를 이용하여 케이블 고정부(1030)를 생성하는 경우, 인쇄회로기판(1000)에 형성되는 구멍들(1010a, 1010b, 1010c, 1010d, 1010e, 1010f, 1010g, 1010h, 1010i, 1010j, 1010k)의 위치를 조절하고, 구멍들(1010a, 1010b, 1010c, 1010d, 1010e, 1010f, 1010g, 1010h, 1010i, 1010j, 1010k)이 형성된 인쇄회로기판(1000)으로부터 분리되는 단위 인쇄회로기판(1000)의 형상을 조절함으로써, 케이블 고정부(1030)의 오목부(1040a, 1040b, 1040c, 1040d) 가 절연체(1032)의 측면 중앙에 위치할 수 있다.When creating the cable fixing part 1030 using the printed circuit board 1000, holes 1010a, 1010b, 1010c, 1010d, 1010e, 1010f, 1010g, 1010h, 1010i, formed in the printed circuit board 1000, A unit printed circuit board separated from the printed circuit board 1000 in which the holes 1010a, 1010b, 1010c, 1010d, 1010e, 1010f, 1010g, 1010h, 1010i, 1010j, 1010k) are formed By adjusting the shape of 1000, the concave portions 1040a, 1040b, 1040c, and 1040d of the cable fixing portion 1030 can be located at the center of the side surface of the insulator 1032.
도 11은 본 발명의 또 다른 일 실시예에 따라 케이블 고정부를 생성하는 방법을 설명하기 위한 도면이다.11 is a view for explaining a method of generating a cable fixing unit according to another embodiment of the present invention.
도시된 바와 같이, 케이블 고정부(1130)의 절연체의 단면은 십자 형상일 수 있다. 이에 따라, 케이블 고정부(1130)는 절연체의 측면에 직각 형상의 케이블 안내부(1132a, 1132b, 1132c, 1132d)를 포함할 수 있다. 직각 형상의 케이블 안내부(1132a, 1132b, 1132c, 1132d)는 절연체의 측면이 직각으로 파인 홈(groove), 틈(gap), 슬릿(slit), 또는 구멍(hole)을 의미할 수 있고, 동축 케이블(1140)이 케이블 안내부(1132a, 1132b, 1132c, 1132d) 상에 배열될 수 있다.As shown, a cross section of the insulator of the cable fixing part 1130 may have a cross shape. Accordingly, the cable fixing part 1130 may include cable guide parts 1132a, 1132b, 1132c, and 1132d having a right angle shape on the side of the insulator. The cable guide portions 1132a, 1132b, 1132c, and 1132d having a right angle shape may mean a groove, a gap, a slit, or a hole in which the side of the insulator is cut at a right angle, and coaxial The cables 1140 may be arranged on the cable guides 1132a, 1132b, 1132c, and 1132d.
인쇄회로기판(1100)를 이용하여 케이블 고정부(1130)를 생성하는 경우, 인쇄회로기판(1100)에 사각형의 구멍들(1120a, 1120b, 1120c, 1120d, 1120e, 1120f) 을 규칙적으로 뚫고, 사각형의 구멍들(1120a, 1120b, 1120c, 1120d, 1120e, 1120f) 이 형성된 인쇄회로기판(1100)으로부터 소정의 크기의 단위 인쇄회로기판(1100)을 분리함으로써, 직각 형상의 케이블 안내부(1132a, 1132b, 1132c, 1132d) 가 생성될 수 있다.When creating the cable fixing part 1130 using the printed circuit board 1100, square holes 1120a, 1120b, 1120c, 1120d, 1120e, 1120f are regularly drilled in the printed circuit board 1100, and By separating the unit printed circuit board 1100 of a predetermined size from the printed circuit board 1100 on which the holes 1120a, 1120b, 1120c, 1120d, 1120e, 1120f are formed, the cable guide portions 1132a, 1132b having a right angle shape , 1132c, 1132d) may be generated.
도 12는 본 발명의 일 실시예에 따른 동축 케이블의 접합 방법의 흐름도이다.12 is a flowchart of a method for splicing a coaxial cable according to an embodiment of the present invention.
S1210 단계에서, 절연체(210), 절연체(210)의 후면을 덮는 구리판(220), 및 구리판(220)의 후면을 덮는 납판(230)을 포함하는 케이블 고정부(200)를 생성할 수 있다. 도 5, 도 6, 도 10, 및 도 11을 통해 전술한 바와 같이, 케이블 고정부(200)는 인쇄회로기판(500)을 이용하여 생성될 수 있으며, 케이블 고정부(200)는 인쇄회로기판(500)을 이용하여 생성하는 단계는, 인쇄회로기판(500)에 구멍을 뚫는 단계, 구멍이 형성된 인쇄회로기판(500)으로부터 단위 인쇄회로기판(500)을 분리하는 단계, 및 단위 인쇄회로기판(500)에 납을 디핑하는 단계를 포함할 수 있다.In step S1210, a cable fixing part 200 including an insulator 210, a copper plate 220 covering the rear surface of the insulator 210, and a lead plate 230 covering the rear surface of the copper plate 220 may be generated. As described above with reference to FIGS. 5, 6, 10, and 11, the cable fixing part 200 may be generated using a printed circuit board 500, and the cable fixing part 200 is a printed circuit board. The steps of generating using 500 include: drilling a hole in the printed circuit board 500, separating the unit printed circuit board 500 from the printed circuit board 500 in which the hole is formed, and the unit printed circuit board It may include dipping lead in 500.
S1220 단계에서, 구리판(220)이 동축 케이블(310)의 실드(316)의 적어도 일부에 접촉하도록, 동축 케이블(310)을 케이블 고정부(200)의 절연체(210)의 측면에 배열할 수 있다.In step S1220, the coaxial cable 310 may be arranged on the side of the insulator 210 of the cable fixing part 200 so that the copper plate 220 contacts at least a part of the shield 316 of the coaxial cable 310. .
S1230 단계에서, 케이블 고정부(200)의 납판(230)의 적어도 일부를 가열함으로써, 납판(230)을 동축 케이블(310)의 실드(316)의 적어도 일부에 솔더링할 수 있다. 또한, 케이블 고정부(200)의 접착층(710)은 소형 내시경 카메라 모듈(100)의 4 포인트 패드(110a, 110b, 110c, 110d)를 포함하는 회로 기판에 접착될 수 있고, 동축 케이블(310)의 중심선(312)은 소형 내시경 카메라 모듈(100)의 4 포인트 패드(110a, 110b, 110c, 110d)에 솔더링 될 수 있다.In step S1230, by heating at least a part of the lead plate 230 of the cable fixing part 200, the lead plate 230 may be soldered to at least a part of the shield 316 of the coaxial cable 310. In addition, the adhesive layer 710 of the cable fixing part 200 may be adhered to a circuit board including the four point pads 110a, 110b, 110c, 110d of the small endoscope camera module 100, and the coaxial cable 310 The center line 312 of may be soldered to the 4- point pads 110a, 110b, 110c, and 110d of the small endoscope camera module 100.
본 실시예와 관련된 기술 분야에서 통상의 지식을 가진 자는 상기된 기재의 본질적인 특성에서 벗어나지 않는 범위에서 변형된 형태로 구현될 수 있음을 이해할 수 있을 것이다. 그러므로 개시된 방법들은 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 한다. 본 발명의 범위는 전술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다Those of ordinary skill in the technical field related to the present embodiment will appreciate that it may be implemented in a modified form without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered from an explanatory point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the above description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims (10)

  1. 동축 케이블의 접속 구조에 있어서,In the connection structure of the coaxial cable,
    절연체, 상기 절연체의 후면을 덮는 구리판, 및 상기 구리판의 후면을 덮는 납판을 포함하는 케이블 고정부; 및A cable fixing part including an insulator, a copper plate covering the rear surface of the insulator, and a lead plate covering the rear surface of the copper plate; And
    중심선, 상기 중심선의 외주를 피복하는 내부절연체, 상기 내부절연체의 외주를 피복하는 실드(shield), 상기 실드의 외주를 피복하는 외부절연체를 포함하는 동축 케이블A coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield
    을 포함하고,Including,
    상기 구리판이 상기 실드의 적어도 일부에 접촉하도록 상기 동축 케이블은 상기 절연체의 측면에 배열되고,The coaxial cable is arranged on the side surface of the insulator so that the copper plate contacts at least a portion of the shield,
    상기 납판의 적어도 일부를 가열함으로써, 상기 납판이 상기 실드의 적어도 일부에 솔더링되는,By heating at least a portion of the lead plate, the lead plate is soldered to at least a portion of the shield,
    동축 케이블의 접속 구조.Connection structure of coaxial cable.
  2. 제1항에 있어서,According to claim 1,
    상기 내부절연체의 길이는 0.1mm 이하이고,The length of the internal insulator is 0.1mm or less,
    상기 절연체와 상기 구리판의 경계는 상기 내부절연체와 상기 중심선의 경계와 이격되는 것을 특징으로 하는 동축 케이블의 접속 구조.A coaxial cable connection structure, characterized in that a boundary between the insulator and the copper plate is spaced apart from a boundary between the inner insulator and the center line.
  3. 제1항에 있어서,According to claim 1,
    상기 절연체의 측면은 오목부를 포함하고,The side surface of the insulator includes a concave portion,
    상기 동축 케이블이 상기 오목부에 배열되는 것을 특징으로 하는 동축 케이블의 접속 구조.The coaxial cable connection structure, characterized in that the coaxial cable is arranged in the recess.
  4. 제1항에 있어서,상기 절연체의 측면은 오목한 에지(edge)들을 포함하고,According to claim 1, The side of the insulator comprises concave edges (edges),
    신호선 및 상기 신호선의 외주를 피복하는 절연체를 포함하는 케이블과 복수의 동축 케이블은 상기 오목한 에지들에 배열되고,A cable including a signal line and an insulator covering an outer circumference of the signal line and a plurality of coaxial cables are arranged at the concave edges,
    상기 복수의 동축 케이블 사이의 공통 접지(common ground)를 위해, 상기 복수의 동축 케이블의 실드들과 상기 케이블의 신호선이 상기 구리판에 접촉하는 것을 특징으로 하는 동축 케이블의 접속 구조.For a common ground between the plurality of coaxial cables, shields of the plurality of coaxial cables and signal lines of the cables contact the copper plate.
  5. 제1항에 있어서,According to claim 1,
    상기 절연체는 테프론으로 형성되는 것을 특징으로 하는 동축 케이블의 접속 구조.The insulator is a connection structure of a coaxial cable, characterized in that formed of Teflon.
  6. 제1항에 있어서, 상기 케이블 고정부는The method of claim 1, wherein the cable fixing part
    상기 절연체 및 상기 구리판을 포함하는 인쇄회로기판(PCB; printed circuit board)에 규칙적으로 구멍을 형성하고,Regularly forming holes in a printed circuit board (PCB) including the insulator and the copper plate,
    상기 구멍을 포함하는 인쇄회로기판을 소정의 크기의 단위 인쇄회로기판으로 분할하고,Dividing the printed circuit board including the hole into unit printed circuit boards of a predetermined size,
    상기 단위 인쇄회로기판의 구리판 상에 상기 납판을 덮어서 형성되는 것을 특징으로 하는 동축 케이블의 접속 구조.The connection structure of a coaxial cable, characterized in that formed by covering the lead plate on the copper plate of the unit printed circuit board.
  7. 제1항에 있어서,According to claim 1,
    상기 절연체는 상기 절연체의 전면을 덮는 접착층을 포함하고,The insulator includes an adhesive layer covering the entire surface of the insulator,
    상기 접착층은 카메라 모듈의 패드(pad)를 포함하는 기판에 접착되고,The adhesive layer is adhered to the substrate including the pad of the camera module,
    상기 중심선은 상기 패드에 전기적으로 접속되는 것을 특징으로 하는 동축 케이블의 접속 구조.The connection structure of a coaxial cable, wherein the center line is electrically connected to the pad.
  8. 제1항에 있어서,According to claim 1,
    상기 절연체의 측면은 소정의 거리로 반복되는 복수의 오목부를 포함하고,The side surface of the insulator includes a plurality of recesses repeated at a predetermined distance,
    복수의 동축 케이블이 상기 복수의 오목부에 배열되는 것을 특징으로 하는 동축 케이블의 접속 구조.A coaxial cable connection structure, wherein a plurality of coaxial cables are arranged in the plurality of recesses.
  9. 제1항에 있어서,According to claim 1,
    상기 절연체의 단면은 십자 형상인 것을 특징으로 하는 동축 케이블의 접속 구조.The cross-section of the insulator is a connection structure of a coaxial cable, characterized in that the cross-shaped.
  10. 중심선, 상기 중심선의 외주를 피복하는 내부절연체, 상기 내부절연체의 외주를 피복하는 실드(shield), 상기 실드의 외주를 피복하는 외부절연체를 포함하는 동축 케이블의 접속 방법에 있어서,A method for connecting a coaxial cable comprising a center line, an inner insulator covering the outer periphery of the center line, a shield covering the outer periphery of the inner insulator, and an outer insulator covering the outer periphery of the shield,
    절연체, 상기 절연체의 후면을 덮는 구리판, 및 상기 구리판의 후면을 덮는 납판을 포함하는 케이블 고정부를 생성하는 단계; Generating a cable fixing part including an insulator, a copper plate covering the rear surface of the insulator, and a lead plate covering the rear surface of the copper plate;
    상기 구리판이 상기 실드의 적어도 일부에 접촉하도록 상기 동축 케이블을 상기 절연체의 측면에 배열하는 단계; 및Arranging the coaxial cable on the side of the insulator so that the copper plate contacts at least a portion of the shield; And
    상기 납판의 적어도 일부를 가열함으로써, 상기 납판을 상기 실드의 적어도 일부에 솔더링하는 단계Soldering the lead plate to at least a portion of the shield by heating at least a portion of the lead plate
    를 포함하는, 동축 케이블의 접속 방법.Containing, the connection method of the coaxial cable.
PCT/KR2019/009190 2019-02-08 2019-07-24 Coaxial cable connection structure and method WO2020162654A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080080911A (en) * 2007-03-02 2008-09-05 호시덴 가부시기가이샤 Electric connector
JP2010108635A (en) * 2008-10-28 2010-05-13 Hitachi Cable Ltd Connection structure and connecting method of coaxial cable and base board
JP2011119409A (en) * 2009-12-02 2011-06-16 Olympus Corp Electronic circuit module and method of connecting coaxial cable
KR101526179B1 (en) * 2014-03-10 2015-06-05 주식회사 엠씨넥스 Waterproofing apparatus of cable using wire holder
JP2016015267A (en) * 2014-07-02 2016-01-28 オリンパス株式会社 Mounting cable and assembly cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080080911A (en) * 2007-03-02 2008-09-05 호시덴 가부시기가이샤 Electric connector
JP2010108635A (en) * 2008-10-28 2010-05-13 Hitachi Cable Ltd Connection structure and connecting method of coaxial cable and base board
JP2011119409A (en) * 2009-12-02 2011-06-16 Olympus Corp Electronic circuit module and method of connecting coaxial cable
KR101526179B1 (en) * 2014-03-10 2015-06-05 주식회사 엠씨넥스 Waterproofing apparatus of cable using wire holder
JP2016015267A (en) * 2014-07-02 2016-01-28 オリンパス株式会社 Mounting cable and assembly cable

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