EP3246988B1 - Antennenvorrichtung und verfahren zur herstellung davon - Google Patents

Antennenvorrichtung und verfahren zur herstellung davon Download PDF

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Publication number
EP3246988B1
EP3246988B1 EP17159171.2A EP17159171A EP3246988B1 EP 3246988 B1 EP3246988 B1 EP 3246988B1 EP 17159171 A EP17159171 A EP 17159171A EP 3246988 B1 EP3246988 B1 EP 3246988B1
Authority
EP
European Patent Office
Prior art keywords
antenna
antenna device
holding
coaxial cable
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP17159171.2A
Other languages
English (en)
French (fr)
Other versions
EP3246988A1 (de
Inventor
Yoshihiro NIIHARA
Yuichiro Yamaguchi
Hiroshi Chiba
Masaki Ueyama
Ning Guan
Hiroiku Tayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2017029292A external-priority patent/JP6800772B2/ja
Application filed by Fujikura Ltd filed Critical Fujikura Ltd
Publication of EP3246988A1 publication Critical patent/EP3246988A1/de
Application granted granted Critical
Publication of EP3246988B1 publication Critical patent/EP3246988B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to an antenna device including a film antenna.
  • the present invention also relates to a method for manufacturing such an antenna device.
  • a three-dimensional structure of an antenna conductor is maintained by attaching/winding the film antenna to/around a highly rigid support. This is because unless the film antenna is attached/wound to/around the highly rigid support, a change in three-dimensional structure of the antenna conductor occurs, and the change results in a change in antenna characteristic.
  • a high-frequency current is supplied to/from a film antenna via a cable (e.g., a coaxial cable) that is connected to the film antenna.
  • the film antenna and the cable are normally connected by soldering a hot side conductor and a cold side conductor of the cable (an inner conductor and an outer conductor of the coaxial cable) to respective two feed points provided in an antenna conductor of the film antenna.
  • a technique for achieving greater durability with respect to pulling of the cable include a technique in which by arranging, in a middle of a wiring path for a cable, a holding member providing and holding the cable while bending the cable, a force by which to pull the cable is made difficult to transmit to a connection between an antenna and the cable (see, for example, Patent Literature 1).
  • the present invention has been made in view of the problem, and an object of the present invention is to (i) prevent an antenna device including a flexible film antenna from having a structure that is more complicated or made larger and (ii) allow the antenna device to have a more stable antenna characteristic and greater durability with respect to pulling of a cable.
  • an antenna device in accordance with an aspect of the present invention includes: a film antenna; a cable which has a tip part connected to a feed section of the film antenna; and a support around which the film antenna is wound and which has a plurality of holding parts holding the cable in a state in which the cable is bent, the support including a first member and a second member attached to the first member, the first member having (i) a first holding part holding a bent part and/or a vicinity thereof, the bent part being closest to the tip part of the cable, and (ii) an indentation provided in a part of the first member in which part a connection between the cable and the film antenna is arranged, the second member having a recess in which the connection arranged in the indentation of the first member is contained, and the film antenna being wound around the support so as to close the recess, and the recess being filled with a resin.
  • an antenna device manufacturing method for manufacturing an antenna device including: a film antenna; a cable; and a support around which the film antenna is wound and which has a plurality of holding parts holding the cable, the support including a first member and a second member, the first member having (i) a first holding part of the plurality of holding parts and (ii) an indentation provided in a part of the first member in which part a connection between the cable and the film antenna is arranged, and the second member having a recess in which the connection arranged in the indentation of the first member is contained, the method includes: a first holding step of arranging a tip part of the cable in the indentation of the first member and causing the first holding part of the first member to hold a bent part and/or a vicinity thereof, the bent part being closest to the tip part of the cable; a connecting step of, after the first holding step, connecting the tip part of the cable to a feed section of the film antenna; an attach
  • the present invention makes it possible to (i) prevent an antenna device including a film antenna from having a structure that is more complicated or made larger and (ii) allow the antenna device to have a more stable antenna characteristic and greater durability with respect to pulling of a cable.
  • a configuration of an antenna device 1 in accordance with Embodiment 1 of the present invention is described below with reference to Figs. 1 through 6 .
  • Fig. 1 is a view illustrating the antenna device 1 in accordance with Embodiment 1.
  • (a) of Fig. 1 is a perspective view illustrating an upper surface side of the antenna device 1.
  • (b) of Fig. 1 is a perspective view illustrating a lower surface side of the antenna device 1.
  • (c) of Fig. 1 is a cross-sectional view of the antenna device 1 illustrated in (a) of Fig. 1 , taken along a line A-A.
  • (d) of Fig. 1 is an enlarged cross-sectional view of a feed section and its vicinity (a region B illustrated in (c) of Fig. 1 ).
  • the antenna device 1 includes a film antenna 11 that is flexible, a coaxial cable 12 connected to the film antenna 11, and a support 13 for supporting the film antenna 11 and holding the coaxial cable 12.
  • the film antenna 11 is wound around the support 13 which has a box shape (i.e., substantially a rectangular parallelepiped shape) as an external shape and is made of a resin having rigidity, so that a three-dimensional structure of the film antenna 11 (antenna conductors) is maintained.
  • the antenna device 1 in accordance with Embodiment 1 can be used as, for example, an on-vehicle antenna which is to be incorporated in a resin-made spoiler that is mounted at a rear end of a roof of a vehicle body such as an automobile.
  • the antenna device 1 is provided at the rear end of the roof of the vehicle body in a state in which, in the drawings, a positive direction of an x-axis (hereinafter, referred to as an x-axis positive direction) is a rightward direction, a negative direction of the x-axis (hereinafter, referred to as an x-axis negative direction) is a leftward direction, a positive direction of a y-axis (hereinafter, referred to as a y-axis positive direction) is a forward direction, a negative direction of the y-axis (hereinafter, referred to as a y-axis negative direction) is a backward direction, a positive direction of a z-axis (hereinafter, referred to as a z-axis positive direction) is an upward direction, and a negative direction of the z-axis (hereinafter, referred to as a z-axis negative direction) is a downward direction.
  • the x-axis positive direction, the x-axis negative direction, the y-axis positive direction, the y-axis negative direction, the z-axis positive direction, and the z-axis negative direction are sometimes expressed as right, left, front, rear, up, and down, respectively.
  • Fig. 2 is a development view of the film antenna 11 included in the antenna device 1 illustrated in Fig. 1 .
  • the film antenna 11 which is flexible is made up of a dielectric film 111 which is flexible and a first antenna conductor 112 and a second antenna conductor 113 which are provided on a surface of the dielectric film 111.
  • the first antenna conductor 112 and the second antenna conductor 113 constitute a dipole antenna in which the first antenna conductor 112 and the second antenna conductor 113 serve as respective antenna elements.
  • the first antenna conductor 112 and the second antenna conductor 113 constitute a monopole antenna in which the first antenna conductor 112 and the second antenna conductor 113 serve as an antenna element and a ground plane, respectively.
  • the film antenna 11 which is flexible is bent along a line V-V and a line W-W, which are illustrated in Fig. 2 , such that folds come to an inner side, and is wound around the support 13. Moreover, the film antenna 11 which is flexible is wound around the support 13 which has a three-dimensional shape such that each of the first antenna conductor 112 and the second antenna conductor 113 has a predetermined three-dimensional structure.
  • a third portion J3 of the film antenna 11 is arranged along a third supporting surface (i.e., portion I3 in Fig. 1 ) of an upper surface of the support 13 so that the second antenna conductor 113 extends from a feed section 114 in a y-axis direction.
  • a second portion J2 of the film antenna 11 is arranged along a second supporting surface (i.e., portion I2 in Fig. 1 ) which is perpendicular to the third supporting surface
  • a first portion J1 of the film antenna 11 is arranged along a first supporting surface (i.e., portion I1 in Fig. 1 ) which is perpendicular to the second supporting surface.
  • the first antenna conductor 112 extending from the feed section 114 in a z-axis direction is bent so as to extend in the y-axis direction while facing the second antenna conductor 113.
  • the film antenna 11 which is flexible is supported by the support 13 which is rigid, so that the three-dimensional structure of the antenna conductors is maintained, and thus an antenna characteristic is stabilized.
  • the coaxial cable 12 which is connected to the feed section 114 of the film antenna 11 has at least any of a function to transmit a high-frequency current which has been outputted from the film antenna 11 upon reception and a function to transmit a high-frequency current which is to be inputted to the film antenna 11 for transmission.
  • the coaxial cable 12 is made up of an inner conductor, an insulator covering the inner conductor, an outer conductor covering the insulator, and a jacket covering the outer conductor.
  • a tip part of the coaxial cable 12, from which tip part the jacket is removed, is connected to the feed section 114 (feed points 114a and 114b) of the film antenna 11 by soldering or the like.
  • the inner conductor of the coaxial cable 12 is connected to the feed point 114a of the first antenna conductor 112
  • the outer conductor of the coaxial cable 12 is connected to the feed point 114b of the second antenna conductor 113.
  • the coaxial cable 12 that is connected to the film antenna 11 is held, while being bent, by a plurality of holding parts provided in the support 13. From this, in the antenna device 1 in accordance with Embodiment 1, even in a case where the coaxial cable 12 is pulled, a pulling force is hardly exerted on a connection between the film antenna 11 and the coaxial cable 12, and it is thus possible to increase durability with respect to pulling of the coaxial cable 12.
  • connection between the film antenna 11 and the coaxial cable 12 (specifically, the feed section 114 of the film antenna 11, the tip part of the coaxial cable 12, and solder for connecting these) is contained in a recess which is open to a third supporting surface side of the support 13, and is sealed with a resin 14 that is obtained by curing a fluid resin injected into the recess. From this, in the antenna device 1 in accordance with Embodiment 1, it is possible to prevent the connection between the film antenna 11 and the coaxial cable 12 from deteriorating due to, for example, moisture.
  • the antenna device 1 of Embodiment 1 employs the support 13 which is divided into a first member 131 and a second member 132 (in Fig. 1 , a surface of the first member 131 is hatched). This allows a lighter load to be applied to the connection between the film antenna 11 and the coaxial cable 12 during manufacture of the antenna device 1, and consequently allows the connection to have greater connection reliability.
  • the support 13 included in the antenna device 1 in accordance with Embodiment 1 includes the first member 131 and the second member 132 which is attached to the first member 131.
  • An upper surface of the first member 131 functions as a third supporting surface I3 which supports the third portion J3 of the film antenna 11.
  • the second member 132 is attached to the first member 131 on a lower surface side of the first member 131.
  • a lower surface of the second member 132 functions as a first supporting surface I1 which supports the first portion J1 of the film antenna 11.
  • the first member 131 is attached to the second member 132 on an upper surface side of the second member 132.
  • FIG. 3 is a perspective view illustrating an upper surface side of the first member 131.
  • (b) of Fig. 3 is a perspective view illustrating a lower surface side of the first member 131.
  • (a) of Fig. 4 is a perspective view illustrating an upper surface side of the second member 132.
  • (b) of Fig. 4 is a perspective view illustrating a lower surface side of the second member 132.
  • Figs. 3 and 4 each also illustrate the coaxial cable 12 which is held by the support 13.
  • the first member 131 of Embodiment 1 is U-shaped in a plan view.
  • the first member 131 is a plate-shaped molded resin product, and has a size small in the z-axis direction.
  • the first member 131 has (i) a main part 13M having a rectangular shape in a plan view and (ii) a left arm part 13L and a right arm part 13R each having a rectangular shape in a plan view and each extending in the y-axis negative direction from the main part 13M.
  • the first member 131 further has an indentation 13D between the left arm part 13L and the right arm part 13R which are arranged so as to be apart from each other. That is, the first member 131 has, at its end located in the y-axis negative direction, the indentation 13D which is surrounded by the left arm part 13L, the main part 13M, and the right arm part 13R on three sides.
  • the feed section 114 of the film antenna 11 is arranged in the indentation 13D.
  • An angular range of direction in which the feed section 114 arranged in the indentation 13D is surrounded by the first member 131 is larger than 180 degrees.
  • the first member 131 further has, on its x-axis positive direction side, an extending part 13S extending in the x-axis positive direction from a region extending over the main part 13M and the right arm part 13R.
  • the first member 131 further has a guide ring 13G at an end of its upper surface which end is located in the y-axis positive direction (see (a) of Fig. 3 ).
  • a first holding part and a second holding part are provided on respective lower surfaces of the right arm part 13R and the extending part 13S of the first member 131 (see (b) of Fig. 3 ).
  • the first holding part provided on the right arm part 13R holds the coaxial cable 12 which extends in the x-axis direction
  • the second holding part provided on the extending part 13S holds the coaxial cable 12 which extends in the y-axis direction.
  • a projecting part 13R1 having a rectangular parallelepiped shape is provided on the lower surface of the right arm part 13R, and the projecting part 13R1 has a recessed groove 13R2 extending in the x-axis direction.
  • the recessed groove 13R2 functions as the first holding part, and holds the coaxial cable 12 which extends in the x-axis direction from the indentation 13D.
  • a projecting part 13S1 having a rectangular parallelepiped shape is provided on the lower surface of the extending part 13S, and the projecting part 13S1 has a recessed groove 13S2 extending in the y-axis direction.
  • the recessed groove 13S2 functions as the second holding part.
  • the recessed groove 13S2 causes the coaxial cable 12 which extends in the x-axis positive direction from the recessed groove 13R2 (first holding part) to be bent in the y-axis positive direction, and holds the coaxial cable 12 which extends in the y-axis positive direction. That is, by causing the second holding part (recessed groove 13S2) to hold the coaxial cable 12 which is held by the first holding part (recessed groove 13R2), the coaxial cable 12 is bent in a vicinity of the first holding part. In such a way, a part of the coaxial cable 12 which part is in a vicinity of a bent part of the coaxial cable 12 which bent part is closest to the tip part of the coaxial cable 12 is held by the first holding part.
  • the second member 132 of Embodiment 1 is a molded resin product, and has a box shape as an external shape.
  • the second member 132 has, on its upper surface, (i) a recess 13C1 in which the connection between the film antenna 11 and the coaxial cable 12 is contained and (ii) a first recessed groove 13C2 and a second recessed groove 13C3 each of which communicates with the recess 13C1 and each of which extends toward an end of the second member 132 which end is located in the x-axis positive direction (see (a) of Fig. 4 ).
  • the recess 13C1 is arranged so as to correspond to the indentation 13D of the first member 131. Therefore, in a case where the film antenna 11 is wound around the support 13, the connection between the film antenna 11 and the coaxial cable 12 is contained in the recess 13C1, and the recess 13C1 is covered with the film antenna 11 so as to be closed.
  • the connection between the film antenna 11 and the coaxial cable 12 is sealed with the resin 14 which is obtained by curing a fluid resin injected in the recess 13C1.
  • a volumetric capacity of the recess 13C1 is preferably as small as possible so that an amount of the resin, necessary to seal the connection between the film antenna 11 and the coaxial cable 12, is reduced.
  • the first recessed groove 13C2, which communicates with the recess 13C1, functions as a passage through which the coaxial cable 12 is drawn out of the recess 13C1.
  • the second recessed groove 13C3, which communicates with the recess 13C1, functions as an exhaust hole through which a gas, contained in the recess 13C1 during injection of the fluid resin into the recess 13C1, is let out.
  • the second member 132 further has, on its lower surface, a third holding part which holds the coaxial cable 12 (see (b) of Fig. 4 ).
  • the second member 132 has, on its lower surface, a recessed groove 13B which passes through the second member 132 in the x-axis direction.
  • the recessed groove 13B is located on a y-axis positive direction side of the first supporting surface I1 on which the first portion J1 of the film antenna 11 is arranged.
  • the recessed groove 13B functions as the third holding part which holds the coaxial cable 12.
  • the recessed groove 13B has (i) a pair of groove walls 13B1 and 13B2 each of which extends in the x-axis direction and (ii) standing walls 13B3 through 13B7 each of which is provided between the pair of groove walls 13B1 and 13B2 and each of which extends in the y-axis direction.
  • the standing walls 13B3 through 13B6 Out of the standing walls 13B3 through 13B7, the standing walls 13B3 through 13B6 have respective slits 13B8 through 13B11 in which the coaxial cable 12 can be pressed.
  • the second member 132 further has a fourth holding part which holds the coaxial cable 12 that is held by the third holding part.
  • the second member 132 has, on its x-axis negative direction side, an extending part 13T1 which extends in the x-axis negative direction.
  • the extending part 13T1 has, on its upper surface, a recessed groove 13T2 which extends in the y-axis direction.
  • the recessed groove 13T2 functions as the fourth holding part which holds the coaxial cable 12.
  • the second member 132 has, on its x-axis positive direction side, an extending part 13S3 which extends in the x-axis positive direction and which corresponds to the extending part 13S of the first member 131. Therefore, in a case where the second member 132 is attached to the first member 131, the coaxial cable 12 which is through the recessed groove 13S2 is covered with the extending part 13S3 of the second member 132. This makes it possible to prevent the coaxial cable 12 from falling off the recessed groove 13S2 (second holding part).
  • the second member 132 has (i) on its side surface located in the x-axis positive direction, an elastic tongue 13P1 which has a protrusion 13Q1 at its end and which extends in the z-axis negative direction and (ii) on its side surface located in the x-axis negative direction, an elastic tongue 13P2 which has a protrusion 13Q2 at its end and which extends in the z-axis negative direction.
  • the protrusions 13Q1 and 13Q2 provided at the respective ends of the elastic tongues 13P1 and 13P2 are used to fix the antenna device 1 to an object in which to incorporate the antenna device 1 (for example, a spoiler of an automobile) (later described).
  • the first member 131 of support 13 has (1) the indentation 13D at a position where the feed section 114 of the film antenna 11 wound around the support 13 is arranged and (2) the first holding part (recessed groove 13R2) and the second holding part (recessed groove 13S2) which hold respective parts of the coaxial cable 12 which parts are in a vicinity of the bent part of the coaxial cable 12 which bent part is closest to the tip part of the coaxial cable 12, out of a plurality of holding parts which hold the coaxial cable 12, connected to the feed section 114 of the film antenna 11, in a state in which the coaxial cable 12 is bent.
  • the second member 132 of the support 13 has (1) the recess 13C1 in which the connection between the film antenna 11 and the coaxial cable 12 is contained and (2) the third holding part (recessed groove 13B) and the fourth holding part (recessed groove 13T2) out of the plurality of holding parts.
  • Fig. 5 is a flowchart of a method for manufacturing the antenna device 1.
  • Fig. 6 is a perspective view illustrating the antenna device 1 in each manufacturing step.
  • the antenna device 1 of Embodiment 1 is manufactured by carrying out a first holding step S11, a connecting step S12, an attaching step S13, a second holding step S14, a winding step S15, an injecting step S16, and a curing step S17. Each of those steps will be described below.
  • the first holding part (recessed groove 13R2) provided to the first member 131 is caused to hold the coaxial cable 12 so that the tip part of the coaxial cable 12 is arranged in the indentation 13D provided to the first member 131.
  • the second holding part (recessed groove 13S2) provided to the first member 131 is caused to hold the coaxial cable 12 so that the coaxial cable 12 which is held by the first holding part (recessed groove 13R2) is bent.
  • FIG. 6 illustrates the antenna device 1 which has been subjected to the first holding step S11.
  • the first member 131 is placed on the film antenna 11 in a state in which the third supporting surface I3 of the first member 131 faces in the downward direction. In so doing, the third supporting surface I3 of the first member 131 is brought into contact with the third portion J3 of the film antenna 11 so that the feed section 114 of the film antenna 11 is arranged in the indentation 13D of the first member 131. Then, the tip part of the coaxial cable 12 which has been provided on the first member 131 is connected (by soldering in Embodiment 1) to the feed section 114 of the film antenna 11.
  • the first member 131 is a plate-shaped member, it is possible to secure, around the feed section 114 of the film antenna 11, a wide space for carrying out connection work in the connecting step S12.
  • (b) of Fig. 6 illustrates the antenna device 1 which is being subjected to the connecting step S12.
  • the second member 132 is attached to the first member 131. In so doing, the connection between the feed section 114 of the film antenna 11 and the tip part of the coaxial cable 12 is contained in the recess 13C1 provided to the second member 132.
  • FIG. 6 illustrates the antenna device 1 which has been subjected to the second holding step S14.
  • the film antenna 11 is wound around the support 13. In so doing, the film antenna 11 is bent along the support 13 so that the second portion J2 of the film antenna 11 is arranged along the second supporting surface I2 of the support 13, and the film antenna 11 is further bent along the support 13 so that the first portion J1 of the film antenna 11 is arranged along the first supporting surface I1 of the support 13.
  • the antenna device 1 is arranged so that the first recessed groove 13C2 is arranged above the recess 13C1, and the fluid resin is injected into the recess 13C1 through the first recessed groove 13C2. The fluid resin is injected until the recess 13C1 is filled with the fluid resin.
  • (d) of Fig. 6 illustrates the antenna device 1 which is being subjected to the injecting step S16.
  • the antenna device 1 is left to stand, and the fluid resin which has been injected into the recess 13C1 in the injecting step S16 is cured.
  • the fluid resin injected into the recess 13C1 in the injecting step S16 is a thermoplastic resin
  • the fluid resin is cooled (e.g., by natural cooling).
  • the connecting step of connecting the tip part of the coaxial cable 12 to the feed section 114 of the film antenna 11, which feed section 114 is arranged in the indentation 13D is carried out after the first holding step of causing the first holding part and the second holding part, each of which is provided to the first member 131, to hold the coaxial cable 12 in advance.
  • This allows a lighter load to be applied to the connection between the film antenna 11 and the coaxial cable 12 during manufacture of the antenna device 1, and consequently allows the connection to have greater connection reliability.
  • a configuration of an antenna device 2 in accordance with Embodiment 2 of the present invention is described below with reference to Figs. 7 through 11 .
  • the antenna device 2 in accordance with Embodiment 2 is used as an on-vehicle antenna that is incorporated in a spoiler, the antenna device 2 is provided at a rear end of a roof of a vehicle body in a state in which, in the drawings, a positive direction of an x-axis (hereinafter, referred to as an x-axis positive direction) is a rightward direction, a negative direction of the x-axis (hereinafter, referred to as an x-axis negative direction) is a leftward direction, a positive direction of a y-axis (hereinafter, referred to as a y-axis positive direction) is a forward direction, a negative direction of the y-axis (hereinafter, referred to as a y-axis negative direction) is a backward direction, a positive direction of a z-axis (hereinafter, referred to as a z-axis positive
  • the x-axis positive direction, the x-axis negative direction, the y-axis positive direction, the y-axis negative direction, the z-axis positive direction, and the z-axis negative direction are sometimes expressed as right, left, front, rear, up, and down, respectively.
  • Fig. 7 is a view illustrating the antenna device 2 in accordance with Embodiment 2.
  • (a) of Fig. 7 is a perspective view illustrating an upper surface side of the antenna device 2.
  • (b) of Fig. 7 is a perspective view illustrating a lower surface side of the antenna device 2.
  • (c) of Fig. 7 is a cross-sectional view of the antenna device 2 illustrated in (a) of Fig. 7 , taken along a line C-C.
  • (d) of Fig. 7 is an enlarged cross-sectional view of a feed section and its vicinity (a region D illustrated in (c) of Fig. 7 ).
  • the antenna device 2 of Embodiment 2 includes a film antenna 21, a coaxial cable 22, and a support 23.
  • the antenna device 2 includes the support 23 which has (i) a function of causing a three-dimensional structure of the film antenna 21 to be maintained and (ii) a function of holding the coaxial cable 22 in a state in which the coaxial cable 22 is bent.
  • the film antenna 21 since the film antenna 21 is wound around the support 23, the film antenna 21 has a highly stable antenna characteristic.
  • the coaxial cable 22 since the coaxial cable 22 is held by the support 23, the coaxial cable 22 has high durability with respect to pulling of the coaxial cable 22.
  • a connection between the film antenna 21 and the coaxial cable 22 (specifically, a feed section 214 of the film antenna 21, a tip part of the coaxial cable 22, and solder for connecting these) is contained in a recess of the support 23, and is sealed with a resin 24. This makes it possible to prevent the connection from deteriorating due to, for example, moisture (see (c) and (d) of Fig. 7 ).
  • the antenna device 2 in accordance with Embodiment 2 employs the support 23 which is divided into a first member 231 and a second member 232 (in Fig. 7 , a surface of the first member 231 is hatched). This allows a lighter load to be applied to the connection between the film antenna 21 and the coaxial cable 22 during manufacture of the antenna device 2, and consequently allows the connection to have greater connection reliability.
  • FIG. 8 is a perspective view illustrating an upper surface side of the first member 231.
  • (b) of Fig. 8 is a perspective view illustrating a lower surface side of the first member 231.
  • (a) of Fig. 9 is a perspective view illustrating an upper surface side of the second member 232.
  • (b) of Fig. 9 is a perspective view illustrating a lower surface side of the second member 232.
  • Figs. 8 and 9 each also illustrate the coaxial cable 22.
  • the support 23 of Embodiment 2 is different from the support 13 of Embodiment 1 in that (1) the first member 231 is a three-dimensional molded resin product, and has a size large in a z-axis direction, (2) the first member 231 has all of holding parts each of which holds the coaxial cable 22, (3) the second member 232 has a projecting part 23C which is arranged in an indentation 23D of the first member 231, and the projecting part 23C has, on its upper surface, a recess 23C1 in which the connection between the film antenna 21 and the coaxial cable 22 is contained, (4) the coaxial cable 22 which is through a recessed groove 23B is provided between the first member 231 and the second member 232, and (5) the second member 232 do not have, on its x-axis positive direction side, a part corresponding to the extending part 13R3 of Embodiment 1.
  • the first member 231 of Embodiment 2 is U-shaped in a plan view.
  • the first member 231 is a three-dimensional molded resin product, and has a size large in the z-axis direction.
  • the first member 231 has (i) a main body part 23M having a three-dimensional shape and having a rectangular shape in a plan view and (ii) a left arm part 23L and a right arm part 23R each having a three-dimensional shape and having a rectangular shape in a plan view.
  • the left arm part 23L and the right arm part 23R each extend in the y-axis negative direction from the main body part 23M.
  • the first member 231 further has the indentation 23D between the left arm part 23L and the right arm part 23R which are arranged so as to be apart from each other.
  • the first member 231 has, at its end located in the y-axis negative direction, the indentation 23D which is surrounded by the left arm part 23L, the main body part 23M, and the right arm part 23R on three sides.
  • the indentation 23D which is surrounded by the left arm part 23L, the main body part 23M, and the right arm part 23R on three sides.
  • the first member 231 further has, on its x-axis positive direction side, an extending part 23S extending in the x-axis positive direction from a region extending over the main part 23M and the right arm part 23R.
  • the first member 231 of Embodiment 2 further has, on its upper surface and on its lower surface, the holding parts which hold the coaxial cable 22.
  • a first holding part and a second holding part are provided on respective upper surfaces of the right arm part 23R and the extending part 23S of the first member 231 (see (a) of Fig. 8 ).
  • the first holding part holds the coaxial cable 22 which extends in an x-axis direction
  • the second holding part holds the coaxial cable 22 which extends in the y-axis direction.
  • the right arm part 23R has, on its upper surface, a recessed groove 23R2 which extends in the x-axis direction.
  • the recessed groove 23R2 functions as the first holding part, and holds the coaxial cable 22 which extends in the x-axis direction from the indentation 23D.
  • the extending part 23S has, on its upper surface, a recessed groove 23S2 which extends in the y-axis direction.
  • the recessed groove 23S2 functions as the second holding part.
  • the recessed groove 23S2 causes the coaxial cable 22 which extends in the x-axis direction from the recessed groove 23R2 (first holding part) to be bent in the y-axis direction, and holds the coaxial cable 22 which extends in the y-axis direction. That is, by causing the second holding part (recessed groove 23S2) to hold the coaxial cable 22 which is held by the first holding part (recessed groove 23R2), the coaxial cable 22 is bent in a vicinity of the first holding part. In such a way, part of the coaxial cable 22 which part is in a vicinity of a bent part of the coaxial cable 22 which bent part is closest to the tip part of the coaxial cable 22 is held by the first holding part.
  • a third holding part which holds the coaxial cable 22 is provided on a lower surface of the main body part 23M of the first member 231 (see (b) of Fig. 8 ).
  • the main body part 23M has, on a y-axis positive direction side of its lower surface, a recessed groove 23B which passes through the main body part 23M in the x-axis direction.
  • the recessed groove 23B functions as the third holding part which holds the coaxial cable 22.
  • the recessed groove 23B has (i) a pair of groove walls 23B1 and 23B2 each of which extends in the x-axis direction and (ii) standing walls 23B3 through 23B7 each of which is provided between the pair of groove walls 23B1 and 23B2 and each of which extends in the y-axis direction.
  • the standing walls 23B3 through 23B6 Out of the standing walls 23B3 through 23B7, the standing walls 23B3 through 23B6 have respective slits 23B8 through 23B11 in which the coaxial cable 22 can be pressed.
  • the first member 231 further has a fourth holding part which holds the coaxial cable 22 that is held by the third holding part.
  • the first member 231 has, on its x-axis negative direction side, an extending part 23T1 which extends in the x-axis negative direction.
  • the extending part 23T1 has, on its upper surface, a recessed groove 23T2 which extends in the y-axis direction.
  • the recessed groove 23T2 functions as the fourth holding part which holds the coaxial cable 22.
  • the second member 232 is a molded resin product, and has a box shape as an external shape.
  • the second member 232 has, on its upper surface, the projecting part 23C having a rectangular parallelepiped shape and being complementary to the indentation 23D of the first member 231.
  • the projecting part 23C is fitted in the indentation 23D of the first member 231.
  • the projecting part 23C has, on its upper surface, (i) the recess 23C1 in which the connection between the film antenna 21 and the coaxial cable 22 is contained, (ii) a recessed groove 23C2 (cable through passage) which communicates with the recess 23C1, and (iii) a recessed groove 23C3 (exhaust hole) which communicates with the recess 23C1.
  • the recess 23C1 is arranged in the indentation 23D of the first member 231.
  • the connection between the film antenna 21 and the coaxial cable 22 is contained in the recess 23C1, and the recess 23C1 is covered with the film antenna 21 so as to be closed.
  • the coaxial cable 22 which is through the recessed groove 23B of the first member 231 is provided so as to be sandwiched between the recessed groove 23B and the second member 232.
  • the antenna device 1 in accordance with Embodiment 1 is known to deteriorate in antenna characteristic in a case where the coaxial cable 12 which is pressed in the slits 13B8 through 13B11 of the recessed groove 13B moves to a first supporting surface side so as to be in proximity to the first antenna conductor 112.
  • the antenna device 2 is configured such that the coaxial cable 22 which is through the recessed groove 23B of the first member 231 is pressed by the second member 232 so as not to move to a first supporting surface side of the second member 232. Therefore, even in a case where the coaxial cable 22 is pulled, the coaxial cable 22 does not move to the first supporting surface side and is, accordingly, not in proximity to the first antenna conductor 112. This makes it possible to prevent a deterioration in antenna characteristic which deterioration is caused by a change in position of the coaxial cable 22 which is through the recessed groove 23B.
  • the first member 231 has a guide ring 23G at an end of its upper surface which end is located in the y-axis positive direction.
  • the second member 232 has (i) on its side surface located in the x-axis positive direction, an elastic tongue 23P1 which has a protrusion 23Q1 at its end and which extends in the z-axis negative direction and (ii) on its side surface located in the x-axis negative direction, an elastic tongue 23P2 which has a protrusion 23Q2 at its end and which extends in the z-axis negative direction.
  • Fig. 10 is a flowchart of a method for manufacturing the antenna device 2.
  • Fig. 11 is a perspective view illustrating the antenna device 2 in each manufacturing step.
  • the antenna device 2 of Embodiment 2 is manufactured by carrying out a holding step S21, a connecting step S22, an attaching step S23, a winding step S24, an injecting step S25, and a curing step S26.
  • the method of Embodiment 2 is different from that of Embodiment 1 in that merely a single holding step needs to be carried out so as to cause the support 23 to hold the coaxial cable 22. Each of those steps will be described below.
  • the first holding part (recessed groove 23R2), the second holding part (recessed groove 23S2), the third holding part (recessed groove 23B), and the fourth holding part (recessed groove 23T2), each provided to the first member 231, are caused to hold the coaxial cable 22 so that the tip part of the coaxial cable 22 is arranged in the indentation 23D provided to the first member 231.
  • each of those holding parts of the first member 231 is caused to hold the coaxial cable 22 while the coaxial cable 22 is being bent.
  • the coaxial cable 22 is held by the first holding part through the fourth holding part while being bent.
  • FIG. 11 illustrates the antenna device 2 which has been subjected to the holding step S21.
  • the first member 231 is placed on the film antenna 21 in a state in which the third supporting surface I3 of the first member 231 faces in the downward direction. In so doing, the third supporting surface I3 of the first member 231 is brought into contact with the third portion J3 of the film antenna 21 so that the feed section 214 of the film antenna 21 is arranged in the indentation 23D of the first member 231. Then, the tip part of the coaxial cable 22 which has been provided on the first member 231 is connected (by soldering in Embodiment 2) to the feed section 214 of the film antenna 21. (b) of Fig. 11 illustrates the antenna device 2 which is being subjected to the connecting step S22.
  • the second member 232 is attached to the first member 231. In so doing, the connection between the feed section 214 of the film antenna 21 and the tip part of the coaxial cable 22 is contained in the recess 23C1 provided to the second member 232.
  • (c) of Fig. 11 illustrates the antenna device 2 which is being subjected to the attaching step S23.
  • the film antenna 21 is wound around the support 23. In so doing, the film antenna 21 is bent along the support 23 so that a second portion J2 of the film antenna 21 is arranged along a second supporting surface I2 of the support 23, and the film antenna 21 is further bent along the support 23 so that a first portion J1 of the film antenna 21 is arranged along a first supporting surface I1 of the support 23.
  • the antenna device 2 is arranged so that the recessed groove 23C2 is arranged above the recess 23C1, and the fluid resin is injected into the recess 23C1 through the recessed groove 23C2. The fluid resin is injected until the recess 23C1 is filled with the fluid resin.
  • (d) of Fig. 11 illustrates the antenna device 2 which is being subjected to the injecting step S25.
  • the antenna device 2 is left to stand, and the fluid resin which has been injected into the recess 23C1 in the injecting step S25 is cured.
  • the fluid resin injected into the recess 23C1 in the injecting step S25 is a thermoplastic resin
  • the fluid resin is cooled (e.g., by natural cooling).
  • the connecting step of connecting the tip part of the coaxial cable 22 to the feed section 114 of the film antenna 21, which feed section 114 is arranged in the indentation 23D is carried out after the holding step of causing the first holding part through the fourth holding part, each of which is provided to the first member 231, to hold the coaxial cable 22 in advance.
  • This allows a lighter load to be applied to the connection between the film antenna 21 and the coaxial cable 22 during manufacture of the antenna device 2, and consequently allows the connection to have greater connection reliability.
  • the spoiler 5 in which the antenna device 1 is to be incorporated has an opening 51a which is provided in an upper surface of a housing 51 so that the antenna device 1 can be provided inside the housing 51 (see Fig. 12 ). Note that, in Fig. 12 , shapes of the antenna device 1 and the spoiler 5 are schematically drawn in order to simply illustrate the method for providing the antenna device 1 inside the spoiler 5.
  • the spoiler 5 in accordance with Embodiment 1 includes (i) the housing 51 having an opening provided in the upper surface and (ii) a lid 52 for closing the opening 51a of the housing 51 (see (a) of Fig. 12 ).
  • the housing 51 has (i) a first containing space 511 which is arranged at a part protruding from a rear end of a roof of a vehicle body in the backward direction in a case where the spoiler 5 is mounted at the rear end of the roof and (ii) a second containing space 512 which is arranged along the roof.
  • the first containing space 511 and the second containing space 512 communicate with each other, and the first containing space 511 has a space for containing the support 13.
  • the first containing space 511 is provided with a pair of supporting plates 513 and 514 for supporting the support 13 of the antenna device 1.
  • Embodiment 1 as illustrated in (b) of Fig. 12 , the antenna device 1 is inserted into the housing 51 via the opening 51a provided in the upper surface of the housing 51, and the protrusions 13Q1 and 13Q2 provided in the support 13 of the antenna device 1 are engaged with respective engagement holes provided in the respective supporting plates 513 and 514, so that the antenna device 1 is fixed to the supporting plates 513 and 514. Then, as illustrated in (c) of Fig. 12 , the opening 51a of the housing 51 is closed with the lid 52, and thus the spoiler 5 in which the antenna device 1 is incorporated is provided.
  • the antenna device 1 is attached to the spoiler 5 in a state in which the support 13 is contained in the first containing space 511 and the film antenna 11 wound around the support 13 partially extends in the second containing space 512.
  • the coaxial cable 12 connected to the film antenna 11 is drawn out to an outside of the housing 51 via a through hole (not illustrated) provided in the housing 51.
  • the antenna device 2 in accordance with Embodiment 2 can also be provided inside the spoiler 5 by a method identical with the method for providing the antenna device 1 in accordance with Embodiment 1 inside the spoiler 5.
  • a configuration of an antenna device 3 in accordance with Embodiment 3 of the present invention is described below with reference to Figs. 13 through 15 .
  • the antenna device 3 in accordance with Embodiment 3 is used as an on-vehicle antenna that is incorporated in a spoiler
  • the antenna device 3 is provided at a rear end of a roof of a vehicle body in a state in which, in the drawings, a positive direction of an x-axis (hereinafter, referred to as an x-axis positive direction) is a rightward direction, a negative direction of the x-axis (hereinafter, referred to as an x-axis negative direction) is a leftward direction, a positive direction of a y-axis (hereinafter, referred to as a y-axis positive direction) is a forward direction, a negative direction of the y-axis (hereinafter, referred to as a y-axis negative direction) is a backward direction, a positive direction of a z-axis (hereinafter, referred to as a z-
  • the x-axis positive direction, the x-axis negative direction, the y-axis positive direction, the y-axis negative direction, the z-axis positive direction, and the z-axis negative direction are sometimes expressed as right, left, front, rear, up, and down, respectively.
  • Fig. 13 is a view illustrating the antenna device 3 in accordance with Embodiment 3.
  • (a) of Fig. 13 is a perspective view illustrating an upper surface side of the antenna device 3.
  • (b) of Fig. 13 is a perspective view illustrating a lower surface side of the antenna device 3.
  • (c) of Fig. 13 is a cross-sectional view of the antenna device 3 illustrated in (a) of Fig. 13 , taken along a line E-E.
  • (d) of Fig. 13 is an enlarged cross-sectional view of a feed section and its vicinity (a region F illustrated in (c) of Fig. 13 ).
  • the antenna device 3 of Embodiment 3 includes a film antenna 31, a coaxial cable 32, and a support 33.
  • the antenna device 3 includes the support 33 which has (i) a function of causing a three-dimensional structure of the film antenna 31 to be maintained and (ii) a function of holding the coaxial cable 32 in a state in which the coaxial cable 32 is bent.
  • the film antenna 31 since the film antenna 31 is wound around the support 33, the film antenna 31 has a highly stable antenna characteristic. Further, since the coaxial cable 32 is held by the support 33, the coaxial cable 32 has high durability with respect to pulling of the coaxial cable 32.
  • a connection between the film antenna 31 and the coaxial cable 32 (specifically, a feed section 314 of the film antenna31, a tip part of the coaxial cable 32, and solder for connecting these) is contained in a recess of the support 33, and is sealed with a resin 34. This makes it possible to prevent the connection from deteriorating due to, for example, moisture (see (c) and (d) of Fig. 13 ).
  • the antenna device 3 in accordance with Embodiment 3 employs the support 33 which is divided into a first member 331 and a second member 332 (in Fig. 13 , a surface of the first member 331 is hatched). This allows a lighter load to be applied to the connection between the film antenna 31 and the coaxial cable 32 during manufacture of the antenna device 3, and consequently allows the connection to have greater connection reliability.
  • FIG. 14 is a plan view of the first member 331.
  • FIG. 14 is a bottom view of the first member 331.
  • (a) of Fig. 15 is a plan view of the second member 332.
  • (b) of Fig. 15 is a bottom view of the second member 332.
  • Figs. 14 and 15 each also illustrate the coaxial cable 32.
  • the support 33 of Embodiment 3 is different from the support 23 of Embodiment 2 in that (1) the first member 331 has a supporting plate 33S which extends in the y-axis positive direction from a main body part 33M, and does not have a part corresponding to the guide ring 23G of Embodiment 2, (2) the first member 331 does not have, on its x-axis positive direction side, a part corresponding to any of the extending part 23S and the recessed groove 23S2 of Embodiment 2, and also does not have, on its x-axis negative direction side, a part corresponding to any of the extending part 23T1 and the recessed groove 23T2 of Embodiment 2, (3) the first member 331 has a right arm part 33R which has, on its upper surface, a recessed groove (bent recessed groove) 33R2 that holds the coaxial cable 32 in a state in which the coaxial cable 32 is bent, (4) the main body part 33M of the first member 331 has, on its lower surface,
  • the first member 331 of Embodiment 3 has (i) the main body part 33M having a three-dimensional shape and having a rectangular shape in a plan view and (ii) a left arm part 33L and the right arm part 33R each having a three-dimensional shape and having a rectangular shape in a plan view.
  • the left arm part 33L and the right arm part 33R each extend in the y-axis negative direction from the main body part 33M.
  • the first member 331 further has the indentation 33D between the left arm part 33L and the right arm part 33R which are arranged so as to be apart from each other.
  • the first member 331 has, at its end located in the y-axis negative direction, the indentation 33D which is surrounded by the left arm part 33L, the main body part 33M, and the right arm part 33R on three sides.
  • the first member 331 of Embodiment 3 further has the supporting plate 33S which has a plate shape and which extends in the y-axis positive direction from the main body part 33M.
  • the supporting plate 33S and a third supporting surface are arranged so as to be flush with each other.
  • a second antenna conductor 313 of the film antenna 31 is arranged so as to extend along an upper surface of the first member 331, and the feed section 314 of film antenna 31 is arranged in the indentation 33D.
  • the film antenna 31 is attached to the support 33 with use of double-sided adhesive tapes 34 through 36.
  • Figs. 14 and 15 each illustrate an outline of each of the double-sided adhesive tapes 34 through 36 with use of a dotted line.
  • the double-sided adhesive tape 34 has an opening 341.
  • the opening 341 is formed in a region of the double-sided adhesive tape 34, which region corresponds to the tip part of the coaxial cable 32 that is arranged in the indentation 33D (see (a) of Fig. 14 ).
  • the first member 331 of Embodiment 3 does not have a part corresponding to the guide ring 23G of Embodiment 2. Furthermore, the first member 331 does not have, on its x-axis positive direction side, a part corresponding to any of the extending part 23S and the recessed groove 23S2 of Embodiment 2. Moreover, the first member 331 does not have, on its x-axis negative direction side, a part corresponding to any of the extending part 23T1 and the recessed groove 23T2 of Embodiment 2.
  • the first member 331 of Embodiment 3 has, on its respective upper and lower surfaces, holding parts each of which holds the coaxial cable 32.
  • the bent recessed groove 33R2 is formed in the upper surface of the right arm part 33R of the first member 331 (see (a) of Fig. 14 ).
  • the bent recessed groove 33R2 functions as a first holding part.
  • the bent recessed groove 33R2 holds the coaxial cable 32 which extends in the x-axis positive direction from the indentation 33D, and holds the coaxial cable 32 so that the coaxial cable 32 is bent so as to extend in the y-axis positive direction. That is, the first holding part (bent recessed groove 33R2) holds a bent part and its vicinity of the coaxial cable 32 which bent part is closest to the tip part of the coaxial cable 32.
  • the recessed groove 33B which extends in the x-axis direction is formed in the lower surface of the main body part 33M of the first member 331 (see (b) of Fig. 14 ).
  • the recessed groove 33B functions as a holding part.
  • the recessed groove 33B holds the coaxial cable 32 which extends from the bent recessed groove 33R2 (first holding part), in a state in which the coaxial cable 32 is bent.
  • the recessed groove 33B has (i) a pair of groove walls 33B1 and 33B2 each of which extends in the x-axis direction and (ii) standing walls 33B5 through 33B7 each of which is provided between the pair of groove walls 33B1 and 33B2 and each of which extends in a y-axis direction.
  • the groove wall 33B1 has, at its end located in the x-axis positive direction, a notch 33B3 which guides, into the recessed groove 33B, the coaxial cable 32 that extends from the first holding part.
  • the groove wall 33B2 has, in its middle in the x-axis direction, a notch 33B4 which causes the coaxial cable 32 that is provided inside the recessed groove 33B to extend out in the y-axis positive direction.
  • the standing walls 33B5 through 33B7 have respective slits 33B8 through 33B10 in which the coaxial cable 32 can be pressed.
  • the first member 331 of Embodiment 3 has a through hole through which the coaxial cable 32 is provided so that the coaxial cable 32 extends from the bent recessed groove 33R2, which is formed in the upper surface of the right arm part 33R, to the recessed groove 33B, which is formed in the lower surface of the main body part 33M.
  • the coaxial cable 32 which is through the recessed groove 33B is provided between the first member 331 and the second member 232.
  • the main body part 33M has the elastic pieces 33P1 and 33P2 which extend in the y-axis positive direction from respective right and left side surfaces of the main body part 33M.
  • the protrusions 33Q1 and 33Q2 are provided at the respective ends of the elastic pieces 33P1 and 33P2.
  • the supporting plate 33S has, in its end region, expanded parts 33S1 and 33S2 which project rightward and leftward, respectively, in a width direction.
  • the protrusions 33Q1 and 33Q2, provided at the respective ends of the elastic pieces 33P1 and 33P2, and the expanded parts 33S1 and 33S2, provided in the end region of the supporting plate 33S, are used to fix the antenna device 3 to an object in which to incorporate the antenna device 3 (for example, a spoiler of an automobile) (later described).
  • the second member 332 has, on its upper surface, a projecting part 33C having a rectangular parallelepiped shape and being complementary to the indentation 33D of the first member 331.
  • the projecting part 33C has, on its upper surface, (i) a recess 33C1 in which the connection between the film antenna 31 and the coaxial cable 32 is contained, (ii) a recessed groove 33C2 (cable through passage) which communicates with the recess 33C1, and (iii) a recessed groove 33C3 (exhaust hole) which communicates with the recess 33C1.
  • the recess 33C1 is arranged in the indentation 33D of the first member 331.
  • the connection between the film antenna 31 and the coaxial cable 32 is contained in the recess 33C1, and the recess 33C1 is covered with the film antenna 31 so as to be closed.
  • the spoiler 6 in which the antenna device 3 is to be incorporated has an opening 61a which is provided in a lateral surface (i.e., a lateral surface in the forward direction) of a housing 61 so that the antenna device 3 can be provided inside the housing 61 (see Fig. 16 ).
  • a lateral surface i.e., a lateral surface in the forward direction
  • shapes of the antenna device 3 and the spoiler 6 are schematically drawn in order to simply illustrate the method for providing the antenna device 3 inside the spoiler 6.
  • the spoiler 6 in accordance with Embodiment 3 includes (i) the housing 61 which is arranged at a part protruding from a rear end of a roof of a vehicle body in the backward direction in a case where the spoiler 6 is mounted at the rear end of the roof and (ii) a top board 62 which is arranged along the roof.
  • the housing 61 has therein a space for containing the support 33 of the antenna device 3.
  • the opening 61a is provided via which the support 33 of the antenna device 3 is to be inserted into the housing 61.
  • the top board 62 is provided with L-shaped protrusions 621 and 622 for holding the supporting plate 33S of the antenna device 3.
  • the antenna device 3 is arranged along the top board 62 such that the expanded parts 33S1 and 33S2 projecting in the respective left and right (width) directions in an end region of the supporting plate 33S of the antenna device 3 are supported by the respective L-shaped protrusions 621 and 622 of the top board 62 of the spoiler 6, and then the antenna device 3 is slid along the top board 62 such that the support 33 of the antenna device 3 is inserted into the housing 61 of the spoiler 6 via the opening 61a.
  • the elastic pieces 33P1 and 33P2 extending from the support 33 of the antenna device 3 is warped to the inner side so that the protrusions 33Q1 and 33Q2 at the respective ends of the elastic pieces 33P1 and 33P2 enter the housing 61, and the protrusions 33Q1 and 33Q2 are engaged with a surrounding wall of the opening 61a.
  • the support 33 of the antenna device 3 is fixed inside the housing 61, and it is therefore possible to prevent the antenna device 3 from accidentally falling off the spoiler 6.
  • the support 33 can be taken out from inside of the housing 61 by warping the elastic pieces 33P1 and 33P2 to the inner side so as to cancel the engagement between the surrounding wall of the opening 61a and the protrusions 33Q1 and 33Q2. As such, the antenna device 3 can be detached from the spoiler 6.
  • an antenna device in accordance with an aspect of the present invention includes: a film antenna; a cable which has a tip part connected to a feed section of the film antenna; and a support around which the film antenna is wound and which has a plurality of holding parts holding the cable in a state in which the cable is bent, the support including a first member and a second member attached to the first member, the first member having (i) a first holding part holding a bent part and/or a vicinity thereof, the bent part being closest to the tip part of the cable, and (ii) an indentation provided in a part of the first member in which part a connection between the cable and the film antenna is arranged, the second member having a recess in which the connection arranged in the indentation of the first member is contained, and the film antenna being wound around the support so as to close the recess, and the recess being filled with a resin.
  • the film antenna is wound around the support, it is possible to maintain a three-dimensional structure of an antenna conductor of the film antenna. This allows the antenna to have a stable characteristic. Further, with the configuration, since the cable is held by the support while being bent, it is possible to increase durability with respect to pulling of the cable.
  • the recess in which the connection between the film antenna and the cable is contained is filled with the resin and the connection is sealed with the resin, it is possible to prevent the connection from deteriorating due to, for example, moisture.
  • the support includes the first member and the second member attached to the first member, the first member has (i) a first holding part holding a bent part and/or a vicinity thereof, the bent part being closest to the tip part of the cable, and (ii) an indentation provided in a part of the first member in which part the connection between the cable and the film antenna is arranged.
  • the antenna device in accordance with an aspect of the present invention may be configured such that: the first member is a plate-shaped member; and the second member has a holding part, which is different from the first holding part, of the plurality of holding parts.
  • the first member is a plate-shaped member, it is possible to secure, around the feed section, a wide work space for connecting the film antenna and the cable.
  • the antenna device in accordance with an aspect of the present invention may be configured such that the first member has a holding part, which is different from the first holding part, of the plurality of holding parts.
  • the cable is firmly held by the first member. This allows a lighter load to be applied to the connection between the film antenna and the coaxial cable during manufacture of the antenna device, and consequently allows the connection to have greater connection reliability.
  • the antenna device in accordance with an aspect of the present invention may be configured such that at least a part of the cable is arranged between the first member and the second member.
  • the configuration allows the cable to be firmly held by the support. Further, since the configuration makes it difficult to change a position of the cable with respect to the film antenna, the antenna device can have a more stable characteristic.
  • the antenna device in accordance with an aspect of the present invention may be configured such that: the first member is U-shaped in a plan view; and an angular range of direction in which the connection is surrounded by the first member is larger than 180 degrees.
  • the feed section is surrounded and supported by the first member. This allows a lighter load to be applied to the connection between the film antenna and the coaxial cable during manufacture of the antenna device, and consequently allows the connection to have greater connection reliability.
  • an antenna device manufacturing method for manufacturing an antenna device including: a film antenna; a cable; and a support around which the film antenna is wound and which has a plurality of holding parts holding the cable, the support including a first member and a second member, the first member having (i) a first holding part of the plurality of holding parts and (ii) an indentation provided in a part of the first member in which part a connection between the cable and the film antenna is arranged, and the second member having a recess in which the connection arranged in the indentation of the first member is contained, the antenna device manufacturing method includes: a first holding step of arranging a tip part of the cable in the indentation of the first member and causing the first holding part of the first member to hold a bent part and/or a vicinity thereof, the bent part being closest to the tip part of the cable; a connecting step of, after the first holding step, connecting the tip part of the cable to a feed section of the film antenna
  • the holding step is carried out before the connecting step. This allows a lighter load to be applied to the connection between the film antenna and the coaxial cable during manufacture of the antenna device, and consequently allows the connection to have greater connection reliability.
  • the antenna device manufacturing method in accordance with an aspect of the present invention may be configured such that: the first member is a plate-shaped member; and the second member has a holding part, which is different from the first holding part, of the plurality of holding parts, the antenna device manufacturing method further includes: a second holding step of, in and after the attaching step, causing the holding part, which is different from the first holding part, of the second member to hold the cable.
  • the first member is a plate-shaped member, it is possible to secure, around the feed section, a wide work space for connecting the film antenna and the cable. This makes it possible to easily carry out the connecting step.
  • the antenna device manufacturing method in accordance with an aspect of the present invention may be configured such that: the first member further has a holding part, which is different from the first holding part, of the plurality of holding parts; and in the first holding step, the cable is held by the holding part, which is different from the first holding part, of the first member.
  • the cable is firmly held by the first member. This allows a lighter load to be applied to the connection between the film antenna and the coaxial cable during manufacture of the antenna device, and consequently allows the connection to have greater connection reliability. Further, the antenna device manufacturing method makes it possible to collectively carry out operations to hold the cable and consequently facilitates operations to provide the cable to the support and to hold the cable.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)

Claims (8)

  1. Antennenvorrichtung (1, 2, 3), umfassend:
    eine Filmantenne (11, 21, 31);
    ein Kabel (12, 22, 32), das einen Spitzenteil aufweist, der mit einem Versorgungsabschnitt (114, 214, 314) der Filmantenne (11, 21, 31) verbunden ist; und
    eine Halterung (13, 23, 33), um welche die Filmantenne (11, 21, 31) gewickelt ist und die mehrere Halteteile (13R2, 13S2, 13B, 13T2, 23R2, 23S2, 23B, 23T2, 33R2, 33B) aufweist, die das Kabel (12, 22, 32) in einem Zustand halten, in dem das Kabel (12, 22, 32) gebogen ist,
    wobei die Halterung (13, 23, 33) ein erstes Element (131, 231, 331) und ein zweites Element (132, 232, 332) beinhaltet, das an dem ersten Element (131, 231, 331) befestigt ist,
    wobei das erste Element (131, 231, 331) einen ersten Halteteil (13R2, 23R2, 33R2), der einen gebogenen Teil und/oder eine Nähe davon hält, wobei sich der gebogene Teil am nächsten zum Spitzenteil des Kabels (12, 22, 32) befindet, und eine in einem Teil des ersten Elements (131, 231, 331) vorgesehene Einbuchtung (13D, 23D, 33D) aufweist, in der ein Teil einer Verbindung zwischen dem Kabel (12, 22, 32) und der Filmantenne (11, 21, 31) angeordnet ist,
    wobei das zweite Element (132, 232, 332) eine Vertiefung (13C1, 23C1, 33C1) aufweist, in der die in der Einbuchtung (13D, 23D, 33D) des ersten Elements (131, 231, 331) angeordnete Verbindung enthalten ist, und
    wobei die Filmantenne (11, 21, 31) derart um die Halterung (13, 23, 33) gewickelt ist, dass sie die Vertiefung (13C1, 23C1, 33C1) verschließt, und wobei die Vertiefung (13C1, 23C1, 33C1) mit einem Harz (14, 24, 34) gefüllt ist.
  2. Antennenvorrichtung (1) nach Anspruch 1, wobei:
    das erste Element (131) ein plattenförmiges Element ist; und
    das zweite Element (132) einen Halteteil (13S2, 13B, 13T2) aufweist, der von dem ersten Halteteil (13R2) der mehreren Halteteile (13R2, 13S2, 13B, 13T2) verschieden ist.
  3. Antennenvorrichtung (2, 3) nach Anspruch 1, wobei das erste Element (231, 331) einen Halteteil (23S2, 23B, 23T2, 33B) aufweist, der von dem ersten Halteteil (23R2, 33R2) der mehreren Halteteile (23R2, 23S2, 23B, 23T2, 33R2, 33B) verschieden ist.
  4. Antennenvorrichtung (1, 2, 3) nach einem der Ansprüche 1 bis 3, wobei wenigstens ein Teil des Kabels (12, 22, 32) zwischen dem ersten Element (131, 231, 331) und dem zweiten Element (132, 232, 332) angeordnet ist.
  5. Antennenvorrichtung (1, 2, 3) nach einem der Ansprüche 1 bis 4, wobei:
    das erste Element (131, 231, 331) in einer Draufsicht U-förmig ist; und
    ein Winkelbereich der Richtung, in der die Verbindung durch das erste Element (131, 231, 331) umgeben ist, größer als 180 Grad ist.
  6. Herstellungsverfahren für eine Antennenvorrichtung (1, 2, 3) zum Herstellen einer Antennenvorrichtung (1, 2, 3), beinhaltend: eine Filmantenne (11, 21, 31); ein Kabel (12, 22, 32); und eine Halterung (13, 23, 33), um welche die Filmantenne (11, 21, 31) gewickelt ist und die mehrere Halteteile (13R2, 13S2, 13B, 13T2, 23R2, 23S2, 23B, 23T2, 33R2, 33B) aufweist, die das Kabel (12, 22, 32) halten, wobei die Halterung (13, 23, 33) ein erstes Element (131, 231, 331) und ein zweites Element (132, 232, 332) beinhaltet, wobei das erste Element (131, 231, 331) einen ersten Halteteil (13R2, 23R2, 33R2) der mehreren Halteteile (13R2, 13S2, 13B, 13T2, 23R2, 23S2, 23B, 23T2, 33R2, 33B) und eine in einem Teil des ersten Elements (131, 231, 331) vorgesehene Einbuchtung (13D, 23D, 33D) aufweist, in der ein Teil einer Verbindung zwischen dem Kabel (12, 22, 32) und der Filmantenne (11, 21, 31) angeordnet ist, und wobei das zweite Element (132, 232, 332) eine Vertiefung (13C1, 23C1, 33C1) aufweist, in der die in der Einbuchtung (13D, 23D, 33D) des ersten Elements (131, 231, 331) angeordnete Verbindung enthalten ist,
    wobei das Herstellungsverfahren für eine Antennenvorrichtung (1, 2, 3) umfasst:
    einen ersten Halteschritt des Anordnens eines Spitzenteils des Kabels (12, 22, 32) in der Einbuchtung (13D, 23D, 33D) des ersten Elements (131, 231, 331) und des Bewirkens, dass der erste Halteteil (13R2, 23R2, 33R2) des ersten Elements (131, 231, 331) einen gebogenen Teil und/oder eine Nähe davon hält, wobei sich der gebogene Teil am nächsten zum Spitzenteil des Kabels (12, 22, 32) befindet;
    einen Verbindungsschritt, nach dem ersten Halteschritt, des Verbindens des Spitzenteils des Kabels (12, 22, 32) mit einem Versorgungsabschnitt (114, 214, 314) der Filmantenne (11, 21, 31);
    einen Befestigungsschritt, nach dem Verbindungsschritt, des Befestigens des zweiten Elements (132, 232, 332) am ersten Element (131, 231, 331), sodass die Verbindung zwischen der Filmantenne (11, 21, 31) und dem Kabel (12, 22, 32) in der Vertiefung (13C1, 23C1, 33C1) angeordnet ist;
    einen Wickelschritt, nach dem Befestigungsschritt, des Wickelns der Filmantenne (11, 21, 31) um die Halterung (13, 23, 33), sodass die Vertiefung (13C1, 23C1, 33C1) geschlossen wird;
    einen Einspritzschritt, nach dem Wickelschritt, des Einspritzens eines flüssigen Harzes in die Vertiefung (13C1, 23C1, 33C1); und
    einen Aushärtungsschritt, nach dem Einspritzschritt, des Aushärtens des flüssigen Harzes.
  7. Herstellungsverfahren für eine Antennenvorrichtung (1) nach Anspruch 6, wobei:
    das erste Element (131) ein plattenförmiges Element ist; und
    das zweite Element (132) einen Halteteil (13S2, 13B, 13T2) aufweist, der von dem ersten Halteteil (13R2) der mehreren Halteteile (13R2, 13S2, 13B, 13T2) verschieden ist,
    wobei das Herstellungsverfahren für eine Antennenvorrichtung (1) ferner umfasst:
    einen zweiten Halteschritt, bei und nach dem Befestigungsschritt, des Bewirkens, dass der Halteteil (13S2, 13B, 13T2), der von dem ersten Halteteil (13R2) des zweiten Elements (132) verschieden ist, das Kabel (12, 22, 32) hält.
  8. Herstellungsverfahren für eine Antennenvorrichtung (2, 3) nach Anspruch 6, wobei:
    das erste Element (231, 331) ferner einen Halteteil (23S2, 23B, 23T2, 33B) aufweist, der von dem ersten Halteteil (23R2, 33R2) der mehreren Halteteile (23R2, 23S2, 23B, 23T2, 33R2, 33B) verschieden ist; und
    bei dem ersten Halteschritt das Kabel (22, 32) durch den Halteteil (23S2, 23B, 23T2, 33B), der von dem ersten Halteteil (23R2, 33R2) des ersten Elements (231, 331) verschieden ist, gehalten wird.
EP17159171.2A 2016-05-20 2017-03-03 Antennenvorrichtung und verfahren zur herstellung davon Not-in-force EP3246988B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016101854 2016-05-20
JP2017029292A JP6800772B2 (ja) 2016-05-20 2017-02-20 アンテナ装置及びその製造方法

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EP3246988B1 true EP3246988B1 (de) 2019-02-27

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CN108448230B (zh) * 2018-01-25 2020-12-15 瑞声科技（南京）有限公司 天线系统及通讯终端

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Publication number Priority date Publication date Assignee Title
FR2558016B1 (fr) * 1984-01-06 1986-08-22 Moulins Electronique Indle Passe-fil de securite pour appareil electrique d'usage menager et appareil electrique concu pour recevoir un tel passe-fil
JP3655617B2 (ja) * 2003-03-26 2005-06-02 日本アンテナ株式会社 パッチアンテナ
TWM288012U (en) * 2005-09-09 2006-02-21 Smart Ant Telecom Co Ltd Directional-directional antenna structure
JP2010258544A (ja) * 2009-04-22 2010-11-11 Mitsumi Electric Co Ltd アンテナ装置
TWI433637B (zh) 2010-07-02 2014-04-01 Hannstar Display Corp 雙面理線結構及具有雙面理線結構之電子裝置
US8982582B2 (en) * 2012-11-30 2015-03-17 Apple Inc. Electronic device with antenna cable bracket

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