WO2019160078A1 - 車載用アンテナ装置 - Google Patents

車載用アンテナ装置 Download PDF

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Publication number
WO2019160078A1
WO2019160078A1 PCT/JP2019/005532 JP2019005532W WO2019160078A1 WO 2019160078 A1 WO2019160078 A1 WO 2019160078A1 JP 2019005532 W JP2019005532 W JP 2019005532W WO 2019160078 A1 WO2019160078 A1 WO 2019160078A1
Authority
WO
WIPO (PCT)
Prior art keywords
holder
loading element
upper holder
capacitive loading
width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/005532
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
高野　雅之
芳典 高橋
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.)
Yokowo Co Ltd
Original Assignee
Yokowo Co Ltd
Yokowo Mfg Co 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
Application filed by Yokowo Co Ltd, Yokowo Mfg Co Ltd filed Critical Yokowo Co Ltd
Priority to CN201980008598.XA priority Critical patent/CN111630713B/zh
Priority to US16/963,507 priority patent/US11374328B2/en
Priority to EP19753819.2A priority patent/EP3758140A4/en
Publication of WO2019160078A1 publication Critical patent/WO2019160078A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/36—Vertical arrangement of element with top loading
    • 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
    • H01Q1/20—Resilient mountings
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • 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
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • the present invention relates to a vehicle-mounted antenna device.
  • Patent Document 1 an in-vehicle antenna having a capacitive loading element and a helical element has been proposed.
  • the capacitive loading element is held on the capacitive loading element holder by covering the capacitive loading element holder standing on the base.
  • the capacitive loading element is not firmly fixed to the capacitive loading element holder.
  • an object of the present invention is to provide an in-vehicle antenna device capable of firmly fixing a capacitive loading element.
  • An in-vehicle antenna device includes an antenna case, a capacitive loading element housed in an internal space of the antenna case, an upper holder and a lower holder, and the capacitive loading element is sandwiched between the upper holder and the lower holder. And a base for holding the lower holder.
  • the capacity loading element has two elements and a connecting portion that connects the two elements.
  • the connecting portion is provided at a position lower than the upper edges of the two elements.
  • the upper holder holds two elements.
  • the upper holder and the lower holder hold the connecting portion between them.
  • the capacitive loading element can be fixed to the capacitive loading element holder in a state that is difficult to come off. As a result, it is possible to suppress the generation of abnormal noise due to the fixed state being released and the capacitive loading element contacting the antenna case.
  • the fixed position of the capacitive loading element with respect to the capacitive loading element holder can be made constant (individual differences can be reduced). As a result, it is possible to suppress an unstable electrical performance (individual difference is increased) of the capacitive element due to production variations of the vehicle-mounted antenna device.
  • the connecting part is provided at a position lower than the upper edge of the two elements. For this reason, compared with the form with which the connection part was provided in the upper edge of two elements, the position pinched
  • the upper holder fills a space surrounded by the two elements and the connecting portion.
  • the first angle with respect to the base from the lower edge to the upper edge of the two elements holds the two elements on the side of the upper holder before the capacitive element is attached to the capacitive element holder This is smaller than the second angle with respect to the base from the lower edge to the upper edge of the region to be processed.
  • the fixed position of the capacitive loading element with respect to the capacitive loading element holder is less likely to deviate from the appropriate fixed position due to vehicle vibration. As a result, it is possible to suppress a decrease in electrical performance of the capacitive element due to the deviation.
  • the upper holder and the capacity loading element have a shape in which the width in the left-right direction becomes narrower from the front to the rear.
  • the lateral width in front of the capacitive loading element is wider than the lateral width in the rear of the upper holder.
  • the capacitive loading element can be easily attached to the upper holder by inserting the front of the capacitive loading element from the rear of the upper holder.
  • the upper holder and the capacity loading element have a shape in which the width in the left-right direction becomes narrower from the rear to the front.
  • the width in the left-right direction behind the capacitive loading element is wider than the width in the left-right direction in front of the upper holder.
  • the capacitive loading element can be easily attached to the upper holder by inserting the rear of the capacitive loading element from the front of the upper holder.
  • the capacity loading element has a structure that is divided into a front part and a rear part.
  • the upper holder has a shape in which the width in the left-right direction becomes narrower as it goes forward from the center part, and the width in the left-right direction becomes narrower as it goes back from the center part.
  • the front portion of the capacitive loading element has a shape in which the width in the left-right direction becomes narrower from the center toward the front.
  • the rear portion of the capacitive loading element has a shape in which the width in the left-right direction becomes narrower from the center to the rear.
  • the width in the left-right direction behind the front portion of the capacitive loading element is wider than the width in the left-right direction in front of the upper holder.
  • the width in the left-right direction in front of the rear portion of the capacitive loading element is wider than the width in the left-right direction behind the upper holder.
  • the front part of the capacitive loading element is inserted from the front of the upper holder, and the rear part of the capacitive loading element is inserted from the rear of the upper holder, so that the capacitive loading element can be easily attached to the upper holder.
  • At least a part of the capacity loading element is configured in a meander shape.
  • the upper holder has a slit that overlaps with the meander shape.
  • the lower holder has a rib that can be stored in the slit at a position facing the slit.
  • the rib When the rib is fitted into the slit, the rib is fitted into the slit that forms the meander shape of the capacity loading element and extends upward from the lower end.
  • the capacitive loading element vibrates in the front-rear direction due to vehicle vibration, and the capacitive loading element comes into contact with the antenna case. The generation of abnormal noise can be suppressed.
  • the capacitive loading element difficult to move in the front-rear direction, the fixed position of the capacitive loading element with respect to the capacitive loading element holder can be made constant (individual differences can be reduced), and the capacity due to production variations of the in-vehicle antenna device It is possible to suppress the electrical performance of the loading element from becoming unstable (individual difference increases).
  • an in-vehicle antenna device capable of firmly fixing a capacitive loading element.
  • FIG. 1 It is a side view of a capacity loading element, an upper holder, and a lower holder showing a state where an upper holder to which a capacity loading element is attached is attached to a lower holder. It is the perspective view which looked at the upper holder from the lower part. The perspective view of the capacitive loading element, the upper holder, and the lower holder showing the state before the upper holder to which the capacitive loading element is attached is attached to the lower holder. It is a figure which shows the thing only before.
  • the upper holder to which the capacitive loading element is attached is a perspective view of the capacitive loading element, the upper holder, and the lower holder, showing a state where the upper holder is attached to the lower holder, before the portion having the first fitting claw and the fitting hole. It is a figure which shows only a thing. It is the perspective view seen from the lower part of a helical element, a helical element holder, a lower holder, an upper holder, and a capacity loading element which shows a state before a helical element holder to which a helical element is attached is attached to a lower holder.
  • the vehicle-mounted antenna device 1 is attached to the upper surface of a vehicle such as a roof.
  • the in-vehicle antenna device 1 includes an antenna case 5, a pad 7, a capacitive loading element holder 10 (upper holder 11, lower holder 12), a capacitive loading element 20, and a helical element holder 30, as shown in FIGS. 1 and 2.
  • the front-rear direction of the vehicle to which the vehicle-mounted antenna device 1 is attached is the x direction
  • the left-right direction perpendicular to the x direction is the y direction
  • the substantially vertical direction perpendicular to the x direction and the y direction is The description will be made by defining the z direction.
  • the directions indicated by the arrows on the xyz axes are defined as the forward direction, the right direction, and the upward direction, respectively.
  • the antenna case 5 is made of synthetic resin having radio wave transparency, and has, for example, a shark fin shape in which the front side in the x direction is inclined to be lower than the rear side in the x direction and both side surfaces are curved inward.
  • the antenna case 5 is a member that constitutes the vehicle-mounted antenna device 1 with a lower surface opened. As shown in FIGS. 1 and 2, the antenna case 5 includes a pad 7, a capacitive loading element holder 10, a capacitive loading element 20, a helical element holder 30, a helical element 40, a first substrate 45a, a metal base 50, and a resin base. 60, etc. are covered from above in the z direction. Accordingly, the capacitive loading element 20 is accommodated in the internal space of the antenna case 5.
  • the antenna case 5 is attached to the resin base 60 by screws or the like.
  • the pad 7 is an annular elastic member made of elastomer (Elastomer) or rubber.
  • the pad 7 is sandwiched between the peripheral edge of the lower end of the antenna case 5 and the resin base 60.
  • the pad 7 blinds the gap between the lower peripheral edge of the antenna case 5 and the vehicle and prevents water from entering the antenna case 5.
  • the capacity loading element holder 10 holds the capacity loading element 20.
  • the capacity loading element holder 10 includes an upper holder 11 and a lower holder 12 as shown in FIGS.
  • the capacitive loading element holder 10 sandwiches and holds the capacitive loading element 20 between the upper holder 11 and the lower holder 12.
  • the capacitive loading element holder 10 holds the capacitive loading element 20 by sandwiching a connecting portion 22 provided at a position lower than the upper edges of the first element 21a and the second element 21b of the capacitive loading element 20. (See FIG. 2).
  • the upper and lower holders 11 and 12 sandwich and hold the capacitive loading element 20. For this reason, compared with the form which pinches and hold
  • the capacity loading element 20 is, for example, an AM / FM capacity loading element.
  • the capacitive loading element 20 is formed by processing a tin-plated steel plate (conductor plate). As shown in FIG. 3, the capacitive loading element 20 includes a first element 21 a, a second element 21 b, and a connecting portion 22.
  • the first element 21a and the second element 21b of the capacitive loading element 20 are inclined so that the lower side is separated and the upper side is closer as viewed from the x direction.
  • the 1st element 21a and the 2nd element 21b are connected by the metal plate (connection part 22) arrange
  • the first element 21a, the second element 21b, and the connecting portion 22 of the capacitive loading element 20 are formed by bending a single metal plate.
  • the 1st element 21a, the 2nd element 21b, and the connection part 22 are comprised by the meander shape.
  • the first element 21a, the second element 21b, and the connecting portion 22 are configured to be meandered by bending a single metal plate as shown in FIGS.
  • a meander shape is formed by cutting or pressing a metal plate
  • a portion cut from the metal plate is defined as a cut portion.
  • the cut portion is indicated by a dotted arrow.
  • the metal plates constituting the connecting portion 22 include an eleventh metal plate 22a, a twelfth metal plate 22b, a thirteenth metal plate 22c, and a fourteenth metal plate 22d. And a fifteenth metal plate 22e.
  • Each of the first element 21a and the second element 21b has a substantially trapezoidal shape (or a substantially triangular shape) as a whole when viewed from the y direction.
  • the first element 21a includes two metal plates (first metal plate). 21a1 and second metal plate 21a2).
  • the second element 21b includes three metal plates (a third metal plate 21b1, a fourth metal plate 21b2, and a fifth metal plate 21b3).
  • the connection part 22 may be configured by a single metal plate.
  • connection point 21c is provided in front of and below the capacitive loading element 20 (first element 21a in the first embodiment).
  • the connection point 21c has a hook shape protruding leftward in the y direction.
  • the helical element 40 is electrically connected to the capacitive loading element 20 by soldering or the like.
  • the capacitive loading element 20 and a helical element 40 described later constitute an antenna element that receives a signal such as an FM wave band.
  • the helical element holder 30 is made of synthetic resin.
  • the helical element holder 30 is used to hold the helical element 40 under the upper holder 11.
  • a connection fitting 35 is attached to the helical element holder 30.
  • the helical element 40 is made of a conductor.
  • the helical element 40 has a spiral portion that functions as a wavelength shortening element.
  • the connection line extending from the upper end of the spiral portion of the helical element 40 is connected to the connection point 21c of the capacitive loading element 20 by soldering.
  • a connection line extending from the lower end of the helical portion of the helical element 40 is connected to a connection fitting 35 provided in front of the helical element holder 30 in the x direction by soldering.
  • the helical element 40 is disposed below the upper holder 11 at a position behind the connection point 21c in the x direction and shifted to the left in the y direction from the xz plane including the center line LX when viewed from the rear in the x direction.
  • the center line LX is a center line in the y direction of the capacitive loading element 20 and the capacitive loading element holder 10.
  • the first substrate 45a is mounted with an antenna amplifier or the like that amplifies the reception signal of the antenna element (capacitance loading element 20, helical element 40).
  • the first substrate 45a is attached to the upper part of the metal base 50 with screws.
  • a cable (not shown) electrically connected to the first board 45a extends to the roof of the vehicle via cable holes provided in the metal base 50 and the resin base 60.
  • the metal base 50 holds the lower holder 12 and the first substrate 45a. As shown in FIG. 2, a rear metal base 55 is attached to the rear of the metal base 50 in the x direction. Further, the metal base 50 is provided with a projection 51 as shown in FIG.
  • the resin base 60 holds the metal base 50.
  • a seal member (not shown), which is an annular elastic member formed of an elastomer (Elastomer), rubber, urethane foam, or the like, is provided on the lower surface of the resin base 60. By the seal member, the periphery of the region between the resin base 60 and the vehicle roof and provided with the mounting hole is watertightly sealed.
  • the upper holder 11 and the lower holder 12 of the on-vehicle antenna device 1 sandwich, for example, a connecting portion 22 provided at a position lower than the upper edges of the first element 21a and the second element 21b of the capacitive loading element 20,
  • the capacity loading element 20 is held. More specifically, the upper holder 11 holds the first element 21a and the second element 21b.
  • the upper holder 11 and the lower holder 12 hold the connecting portion 22 therebetween.
  • the upper holder 11 is fitted with the capacity loading element 20.
  • the upper holder 11 and the capacity loading element 20 after the fitting are fitted with the lower holder 12.
  • the helical element holder 30 to which the helical element 40 is attached is attached to the capacitive loading element 20.
  • the lower holder 12 is attached to the metal base 50.
  • FIG. 3 is a perspective view of the upper holder 11 and the capacitive loading element 20 as viewed from obliquely above in the z direction.
  • FIG. 14 is a view of the upper holder 11 as viewed from the lower side in the z direction.
  • the upper holder 11 includes a first side portion 11a, a second side portion 11b, a front surface portion 11c, a back surface portion 11d, and an upper surface portion 11e.
  • the first side portion 11a constitutes the left side surface when viewed from the rear in the x direction.
  • the second side portion 11b constitutes the right side surface as viewed from the rear in the x direction.
  • the upper holder 11 has a substantially isosceles trapezoidal shape in cross section viewed from the x direction.
  • the substantially isosceles trapezoidal shape has a wide width in the y direction below the z direction and a narrow width in the y direction above the z direction.
  • the upper holder 11 has a shape in which the width in the y direction becomes narrower from the front in the x direction toward the rear in the x direction.
  • the capacitive element 20 has a shape in which the width in the y direction becomes narrower from the front in the x direction toward the rear in the x direction.
  • a plurality of metal plates (the eleventh metal plate 22a to the fifteenth metal plate 22e) are used as the connecting portion 22 so that the width in the y direction is wider at the front in the x direction than at the rear in the x direction.
  • the first element 21a and the second element 21b are arranged in a positional relationship in which the rear in the x direction is closer to the y direction than the front in the x direction.
  • the width in the y direction in the front in the x direction of the capacitive loading element 20 is wider than the width in the y direction in the rear in the x direction of the upper holder 11.
  • the capacitive loading element 20 can be easily attached to the upper holder 11 by inserting the capacitive loading element 20 in the x direction forward from the rear of the upper holder 11 in the x direction.
  • the upper holder 11 is fitted into the capacitive loading element 20 as shown in FIGS. 6 to 8 show a state where the upper holder 11 and the capacity loading element 20 are fitted.
  • a stopper 11g is provided at the front end of the upper holder 11 in the x direction.
  • the front surface portion 11 c is provided with a stopper 11 g that protrudes downward in the z direction from the other members of the upper holder 11.
  • This stopper 11g locks the front end in the x direction of the connecting portion 22 (the fifteenth metal plate 22e) of the capacitive loading element 20.
  • the capacity loading element 20 is inserted from the rear of the upper holder 11 in the x direction, it is possible to suppress the capacity loading element 20 from being inserted to the front in the x direction by a predetermined amount or more.
  • alignment to a predetermined position can be easily performed.
  • the productivity of the vehicle-mounted antenna device 1 can be improved.
  • the stopper 11g by providing the stopper 11g, the fixed position of the capacitive loading element 20 with respect to the capacitive loading element holder 10 can be made constant. In addition, it is possible to suppress the electrical performance of the capacitive element 20 from becoming unstable (individual difference increases) due to production variations of the vehicle-mounted antenna device 1.
  • the stopper 11g it is possible to suppress the fixing position of the capacitive loading element 20 with respect to the capacitive loading element holder 10 from being shifted from an appropriate fixed position due to the vibration of the vehicle. In addition, it is possible to suppress a decrease in electrical performance of the capacitive loading element 20 due to the deviation.
  • the inclination of the first element 21a viewed from the x direction (first angle ⁇ 1) before the capacitive loading element 20 is attached to the upper holder 11 is the inclination of the first side portion 11a viewed from the x direction ( Smaller than the second angle ⁇ 2) ( ⁇ 1 ⁇ 2, see FIG. 3).
  • the first angle ⁇ 1 referred to in this paragraph is an angle with respect to the metal base 50 from the lower edge to the upper edge of the first element 21a.
  • the second angle ⁇ 2 is an angle with respect to the metal base 50 from the lower edge to the upper edge of the first side portion 11a.
  • the inclination (first angle ⁇ 1) of the second element 21b viewed from the x direction before the capacitive loading element 20 is attached to the upper holder 11 is the second side portion 11b. Is smaller than the inclination (second angle ⁇ 2) viewed from the x direction ( ⁇ 1 ⁇ 2).
  • the first angle ⁇ 1 referred to in this paragraph is an angle with respect to the metal base 50 from the lower edge to the upper edge of the second element 21b.
  • the second angle ⁇ 2 is an angle with respect to the metal base 50 from the lower edge to the upper edge of the second side portion 11b.
  • the capacity loading element 20 when the capacity loading element 20 is attached to the upper holder 11, a reaction force is applied by the upper holder 11 so that the upper portions of the first element 21a and the second element 21b are separated outward in the y direction.
  • the first element 21a and the second element 21b are biased by the reaction force so as to approach the inside in the y direction.
  • the capacity loading element 20 comes into a state of being in firm contact with the upper holder 11.
  • the fixed position of the capacitive loading element 20 with respect to the capacitive loading element holder 10 is less likely to deviate from an appropriate fixed position due to the vibration of the vehicle. As a result, it is possible to suppress a decrease in electrical performance of the capacitive element 20 due to the deviation.
  • the dimensions of the upper holder 11 and the capacity loading element 20 are determined so as to satisfy the following conditions.
  • the upper holder 11 When the upper holder 11 is fitted into the capacitive loading element 20, at least the first element 21a of the capacitive loading element 20 contacts the first side portion 11a of the upper holder 11, and the second element 21b of the capacitive loading element 20 is the upper holder. 11, the upper holder 11 fills most of the inner region of the capacitive element 20.
  • An inner region of the capacitive loading element 20 is a region surrounded by the first element 21 a, the second element 21 b, and the connecting portion 22. Most of the inner region of the capacitive loading element 20 is, for example, more than half of the inner region of the capacitive loading element 20.
  • each of the first element 21a and the second element 21b of the capacity loading element 20 has a substantially trapezoidal shape (or a substantially triangular shape) as a whole when viewed from the y direction.
  • Each of the first element 21a and the second element 21b is partially formed in a meander shape.
  • This meander shape extends upward in the z direction from the lower ends of the first element 21 a and the second element 21 b of the capacitive loading element 20.
  • the meander shape may extend downward in the z direction from the upper ends of the first element 21a and the second element 21b of the capacitive loading element 20.
  • a slit 11h is provided on the first side portion 11a and the second side portion 11b of the upper holder 11 and extends substantially upward in the z direction from the lower end portion. For example, as shown in FIG. 11, the position where the slit 11h is provided overlaps with the positions of the cut portions of the first element 21a and the second element 21b.
  • the slit 11h provided in the first side portion 11a is a cut-out portion generated in the first element 21a when the first element 21a is configured in a meander shape and extends upward in the z direction from the lower end portion. , Provided at positions facing each other in the y direction.
  • the slit 11h provided in the second side portion 11b is a cut portion generated in the second element 21b when the second element 21b is configured in a meander shape and extends upward in the z direction from the lower end portion. , Provided at positions facing each other in the y direction.
  • the slit 11h of the first side portion 11a and the slit 11h of the second side portion 11b are arranged in a positional relationship facing each other in the y direction. If the slit 11h is provided at a position where the cut portions of the first element 21a and the second element 21b overlap, the number of the slit 11h and the cut portions of the first element 21a and the second element 21b is arbitrary. Can be changed. Note that the slit 11h of the first side portion 11a and the slit 11h of the second side portion 11b do not have to be disposed in a positional relationship.
  • the slit 11h of the first side portion 11a and the slit 11h of the second side portion 11b are positioned so that the meander shape and the position overlap each other.
  • the slit 11h may be provided only in any one of the 1st side part 11a and the 2nd side part 11b.
  • a first fitting claw 11i is provided between one of the slits 11h of the first side part 11a and the slit 11h of the second side part 11b facing this in the y direction. .
  • the first fitting claw 11i extends downward in the z direction from the lower surface of the upper surface portion 11e.
  • the first fitting claw 11i will be described later. Further, the number of the first fitting claws 11i can be arbitrarily changed.
  • the lower holder 12 has four legs, a top plate 12 b, and a rib 121.
  • the four legs are a first leg part 12a1 to a fourth leg part 12a4.
  • the top plate 12b is provided on the upper part of the four legs.
  • the rib 121 is provided on the top of the top plate 12b.
  • FIG. 12 only the first leg portion 12a1 and the third leg portion 12a3 are illustrated among the four leg portions.
  • the attachment of the upper holder 11 and the lower holder 12 is performed by fitting the rib 121 of the lower holder 12 into the slit 11h of the upper holder 11.
  • the rib 121 of the lower holder 12 is fitted into the slit 11h of the upper holder 11 in a state where the slit 11h of the upper holder 11 and the meander shape of the capacitive loading element 20 overlap.
  • the connecting portion 22 of the capacitive loading element 20 is sandwiched between the lower edge of the upper holder 11 and the top plate 12 b of the lower holder 12.
  • the slit 11h overlaps with the cut portions of the first element 21a and the second element 21b.
  • the rib 121 of the lower holder 12 fits into the slit 11h of the upper holder 11 and the cut portions of the first element 21a and the second element 21b.
  • the capacitive loading element 20 can be fixed to the capacitive loading element holder 10 in a state in which the connecting portion 22 is not easily detached as compared with the configuration in which the connecting portion 22 is fixed to the upper portion of the capacitive loading element holder 10. That is, it is possible to maintain a state in which the capacitive loading element 20 is fixed at an appropriate position. As a result, it is possible to prevent the fixed state from being released and the capacitive loading element 20 from contacting the antenna case 5 to generate abnormal noise.
  • the capacitive loading element 20 difficult to move in the x direction, the fixed position of the capacitive loading element 20 with respect to the capacitive loading element holder 10 can be made constant. As a result, it is possible to suppress the electrical performance of the capacitive element 20 from becoming unstable (individual differences becoming large) due to production variations of the vehicle-mounted antenna device 1.
  • connection part 22 is provided in the position lower than the upper edge of the 1st element 21a and the 2nd element 21b. For this reason, compared with the form in which the connection part 22 was provided in the upper edge of the 1st element 21a and the 2nd element 21b, the position pinched
  • the rib 121 is formed in a plate shape perpendicular to the x direction.
  • the rib 121 is provided at a position facing the slit 11h of the upper holder 11 in the z direction. For this reason, for example, as shown in FIG. 13, when the upper holder 11 and the lower holder 12 are attached, the rib 121 is fitted into the slit 11h. Therefore, the upper holder 11 and the lower holder 12 can be securely fixed as compared with the configuration in which the slit 11h and the rib 121 are not provided.
  • those fitted into the slits 11h in which the first fitting claws 11i are provided are provided with fitting holes 122 that fit into the first fitting claws 11i. It is done.
  • the first fitting claw 11i and the fitting hole 122 can be snapped by fitting.
  • the upper holder 11 and the lower holder 12 can be reliably fixed as compared with a configuration in which a fitting claw or the like is not provided for the snap fastening.
  • the width in the y direction of the lower end portion of the rib 121 is longer than the distance shown below. .
  • the distance is the distance in the y direction between the lower end of the slit 11h of the first side portion 11a and the slit 11h of the second side portion 11b and facing the rib 121 of the upper holder 11.
  • the rib 121 when the rib 121 is fitted into the slit 11h, the rib 121 is fitted into a slit that forms a meander shape of the capacitive loading element 20 and extends upward from the lower end portion in the z direction.
  • a reinforcing rib 11f substantially perpendicular to the x direction or the y direction is provided on the inner wall of the upper holder 11.
  • the structural strength of the upper holder 11 is increased by the reinforcing ribs 11f.
  • the helical element holder 30 has a first region (bobbin) 30a and a second region 30b.
  • the first region 30a has a substantially cylindrical shape.
  • a helical element 40 is wound around the first region 30a.
  • the second region 30b is located below the first region 30a.
  • a connection fitting 35 is attached to the front end portion of the second region 30b.
  • the helical element holder 30 is screwed to the upper holder 11 through a screw hole provided in the first region 30 a and a screw hole provided in the lower holder 12.
  • the helical element 40 is soldered to the capacitive loading element 20.
  • the capacity loading element 20 is attached to the upper holder 11 in a state where the connecting portion 22 at the lower end is sandwiched between the upper holder 11 and the lower holder 12.
  • a helical element holder 30 that holds the helical element 40 is screwed to the upper holder 11 via the lower holder 12. For this reason, compared with the form in which the helical element holder 30 is fixed to the lower holder 12 by snapping, the fixed state of the capacitive loading element 20 and the helical element 40 is less likely to come off. Further, as compared with the configuration in which the helical element holder 30 is fixed to the lower holder 12 by snapping, the electrical connection between the helical element 40 and the capacitive loading element 20 is less likely to be disconnected due to the vibration of the vehicle. That is, the soldering is not easily damaged.
  • connection fitting 35 is attached to the end of the second region 30b in the x direction front.
  • a region of the connection fitting 35 that is connected to the second region 30b is provided with a protrusion that projects leftward in the y direction when viewed from the rear in the x direction.
  • a connection line extending from the lower end of the helical element 40 is electrically connected to the protrusion.
  • a portion extending downward in the z direction from the front end portion of the connection fitting 35 is sandwiched between sandwiching conductor plate springs provided on the first substrate 45a.
  • the sandwiching conductor leaf spring protrudes upward in the z direction from the first substrate 45a. By the clamping, the first substrate 45a and the connection fitting 35 are electrically connected.
  • the connection between the first substrate 45a and the connection fitting 35 is not limited to the holding conductor leaf spring, and may be in any other form as long as it is electrically connected.
  • the attachment of the lower holder 12 to the metal base 50 will be described.
  • a second fitting claw 123 is provided at the lower end.
  • the lower ends of the second leg 12a2 on the right front when viewed from the rear in the x direction and the third leg 12a3 on the left rear when viewed from the rear in the x direction are screwed.
  • a hole 124 is provided.
  • the first leg portion 12a1 and the fourth leg portion 12a4 are attached to the protrusion 51 of the metal base 50 by snapping.
  • the second leg portion 12a2 and the third leg portion 12a3 are attached to the protrusion 51 of the metal base 50 with screws.
  • a first guide 125 that covers a part of the periphery of the protrusion 51 is provided at the lower ends of the first leg portion 12 a 1 and the fourth leg portion 12 a 4 and around the second fitting claw 123.
  • a second guide 126 that covers a part of the periphery of the protrusion 51 is provided at the lower ends of the second leg portion 12 a 2 and the third leg portion 12 a 3 and around the screw hole 124.
  • a protrusion 51 protruding upward in the z direction is provided on a portion of the metal base 50 to which the four legs (first leg 12a1 to fourth leg 12a4) of the lower holder 12 are attached.
  • those corresponding to the first leg portion 12a1 and the fourth leg portion 12a4 are provided with fitting portions 511 into which the second fitting claws 123 are fitted (see FIG. 20).
  • those corresponding to the second leg portion 12a2 and the third leg portion 12a3 are provided with screw holes.
  • the first leg portion 12a1 and the fourth leg portion 12a4 are attached to the protrusion 51 of the metal base 50 by snapping.
  • the second leg portion 12a2 and the third leg portion 12a3 are attached to the protrusion 51 of the metal base 50 with screws. That is, the lower holder 12 and the metal base 50 are fixed by two screws and two snaps.
  • the number of screws can be reduced as compared with a configuration in which all four locations are screwed.
  • the lower holder 12 can be temporarily fixed together with the metal base 50 before being screwed by snapping. For this reason, it is not necessary to perform positioning when screwing, and screwing can be performed accurately.
  • the lower holder 12 and the metal base 50 can be more reliably fixed as compared to a configuration in which all four locations are snapped.
  • a rear metal base 55 is attached to the rear of the metal base 50 in the x direction.
  • the rear metal base 55 is a plate material made of sheet metal, and adjusts the resonance frequency of unnecessary resonance.
  • the resin base 60 may be configured to hold the lower holder 12 and the first substrate 45a without providing the metal base 50.
  • the metal base 50 may sandwich the pad 7 with the antenna case 5 without providing the resin base 60.
  • the outer shape of the first element 21a and the second element 21b is shaped so as to be substantially the target with the xz plane including the center line LX as seen from the x direction. It is desirable that the positional relationship is determined (see FIG. 19).
  • the center line LX here is the center line in the y direction of the lower connecting portion 22 that connects the first element 21a and the second element 21b.
  • the upper holder 11 and the lower holder 12 are described as sandwiching all of the eleventh metal plate 22a to the fifteenth metal plate 22e constituting the connecting portion 22.
  • the embodiment is not limited to this.
  • a configuration in which at least one of the eleventh metal plate 22a to the fifteenth metal plate 22e constituting the connecting portion 22 is sandwiched between the upper holder 11 and the lower holder 12 is conceivable.
  • the upper holder 11 and the capacity loading element 20 have a shape in which the width in the y direction becomes narrower from the front in the x direction toward the rear in the x direction. Further, the width in the y direction forward of the capacitive loading element 20 in the x direction is wider than the width of the upper holder 11 in the y direction behind the x direction.
  • the shapes of the upper holder 11 and the capacity loading element 20 are not limited thereto.
  • the following second embodiment can be considered.
  • the upper holder 11 and the capacity loading element 20 have a shape in which the width in the y direction becomes narrower from the rear in the x direction toward the front in the x direction.
  • the width of the capacitive loading element 20 in the y direction behind the x direction is wider than the width of the upper holder 11 in the y direction ahead of the x direction.
  • the capacitive loading element 20 can be easily attached to the upper holder 11 by inserting the backward of the capacitive loading element 20 in the x direction from the front of the upper holder 11 in the x direction.
  • the capacitive loading element 20 is divided into a front part in the front in the x direction and a rear part in the rear in the x direction, and the electric coupling between the two is performed via an electronic component or an electric circuit.
  • the upper holder 11 has a shape in which the width in the y direction becomes narrower from the center in the x direction toward the front in the x direction, and the width in the y direction becomes narrower from the center in the x direction toward the rear in the x direction.
  • the front part of the capacitive element 20 has a shape in which the width in the y direction becomes narrower from the rear in the x direction toward the front in the x direction.
  • the rear portion of the capacitive element 20 has a shape in which the width in the y direction becomes narrower from the front in the x direction toward the rear in the x direction.
  • the width of the front portion of the capacitive loading element 20 in the y direction behind the x direction is wider than the width of the upper holder 11 in the y direction ahead of the x direction.
  • the width in the y direction in the front in the x direction of the rear portion of the capacitive loading element 20 is wider than the width in the y direction in the rear in the x direction of the upper holder 11.
  • the front portion of the capacitive loading element 20 is inserted from the front of the upper holder 11 in the x direction, and the rear portion of the capacitive loading element 20 is inserted from the rear of the upper holder 11 in the x direction. It can be easily attached to the upper holder 11.
  • the capacitive loading element 20 includes the first member 211 and the second member 212 as the front part, and the third member 213 and the fourth member 214 as the rear part.
  • the front portion is a portion having a shape in which the width in the y direction becomes narrower from the rear in the x direction toward the front in the x direction.
  • the rear portion is a portion having a shape in which the width in the y direction becomes narrower from the front in the x direction toward the rear in the x direction of the capacitive loading element 20.
  • the protrusion has a first protrusion 111 to a fourth protrusion 114.
  • the first protrusion 111 to the fourth protrusion 114 are arranged in order from the front in the x direction.
  • the first protrusion 111 and the second protrusion 112 are provided on the front portion of the upper holder 11 (the portion whose width in the y direction becomes narrower from the center in the x direction toward the front in the x direction).
  • the third protrusion 113 and the fourth protrusion 114 are provided on the rear portion of the upper holder 11 (the portion whose width in the y direction becomes narrower from the center in the x direction toward the rear in the x direction).
  • the first member 211 to the fourth member 214 are respectively composed of a right element and a left element as viewed from the rear in the x direction, and a connecting member that connects them.
  • the left side elements of the first member 211 to the fourth member 214 function as the first element 21a.
  • the right element of the first member 211 to the fourth member 214 functions as the second element 21b.
  • the connecting member of the first member 211 to the fourth member 214 functions as the connecting portion 22.
  • a first attachment hole 211 a is provided in the right element and the left element of the first member 211.
  • a first protrusion 211b is provided below the connecting member of the first member 211.
  • the first protrusion 211b has a substantially L shape when viewed from the x direction and protrudes downward in the z direction.
  • the second member 212 is disposed behind the first member 211 in the x direction.
  • the right and left elements of the second member 212 are provided with second mounting holes 212a.
  • a second protrusion 212b is provided at the lower part of the right and left elements of the second member 212.
  • the second protrusion 212b has a substantially L shape when viewed from the y direction, and protrudes downward in the z direction.
  • the third member 213 is disposed behind the second member 212 in the x direction.
  • a third attachment hole 213a is provided in the right and left elements of the third member 213.
  • a third protrusion 213b is provided at the lower part of the right and left elements of the third member 213.
  • the third protrusion 213b has a substantially L shape when viewed from the y direction, and protrudes downward in the z direction.
  • the fourth member 214 is disposed behind the third member 213 in the x direction.
  • a fourth attachment hole 214 a is provided in the right element and the left element of the fourth member 214.
  • a fourth protrusion 214b is provided below the right element of the fourth member 214.
  • the fourth protrusion 214b has a substantially L shape when viewed from the y direction, and protrudes downward in the z direction.
  • a connection point 21 c is provided below the left element of the fourth member 214.
  • the second member 212 is inserted from the front of the upper holder 11 in the x direction so that the second protrusion 112 is fitted into the second mounting hole 212a. As a result, the second member 212 is attached to the upper holder 11.
  • the first member 211 is inserted from the front of the upper holder 11 in the x direction so that the first protrusion 111 is fitted into the first mounting hole 211a.
  • the first member 211 is attached to the upper holder 11.
  • the third member 213 is inserted from the rear of the upper holder 11 in the x direction so that the third protrusion 113 is fitted into the third attachment hole 213a.
  • the third member 213 is attached to the upper holder 11.
  • the fourth member 214 is inserted from the rear of the upper holder 11 in the x direction so that the fourth protrusion 114 is fitted into the fourth mounting hole 214a. As a result, the fourth member 214 is attached to the upper holder 11.
  • the first member 211 to the fourth member 214 are electrically connected via the first protrusion 211b to the fourth protrusion 214b and the second substrate 45b including electronic components and electric circuits.
  • the second substrate 45b is disposed in a positional relationship between the first member 211 to the fourth member 214 and the lower holder 12 in the z direction.
  • the second substrate 45b is attached to the upper holder 11 by screwing through a screw hole 211c provided in the connecting member of the first member 211 and a screw hole 214c provided in the connecting member of the fourth member 214. .
  • a receiving surface for screwing is provided in a region facing the screw hole 211 c of the first member 211 of the upper holder 11.
  • the region facing the screw hole 211c of the first member 211 is the lower portion of the recessed region 11j in front of the upper holder 11 in the x direction.
  • a receiving surface for screwing is provided in a region facing the screw hole 214 c of the fourth member 214 of the upper holder 11.
  • the region facing the screw hole 214c of the fourth member 214 is the lower portion of the recessed region 11k on the rear side in the x direction of the upper holder 11.
  • the first protruding portion 211b to the fourth protruding portion 214b are attached to the second substrate 45b by bending the tip or soldering.
  • the second substrate 45b is attached to the upper holder 11 with the connecting portion 22 (the connecting members of the first member 211 to the fourth member 214) of the capacitive loading element 20 sandwiched in the z direction.
  • the upper holder 11 is attached to the lower holder 12 in a state in which the capacitive loading element 20 (first member 211 to fourth member 214) and the second substrate 45b are attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
PCT/JP2019/005532 2018-02-19 2019-02-15 車載用アンテナ装置 Ceased WO2019160078A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980008598.XA CN111630713B (zh) 2018-02-19 2019-02-15 车载用天线装置
US16/963,507 US11374328B2 (en) 2018-02-19 2019-02-15 Antenna device for vehicle
EP19753819.2A EP3758140A4 (en) 2018-02-19 2019-02-15 VEHICLE MOUNTED ANTENNA DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-026935 2018-02-19
JP2018026935A JP6956650B2 (ja) 2018-02-19 2018-02-19 車載用アンテナ装置

Publications (1)

Publication Number Publication Date
WO2019160078A1 true WO2019160078A1 (ja) 2019-08-22

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Application Number Title Priority Date Filing Date
PCT/JP2019/005532 Ceased WO2019160078A1 (ja) 2018-02-19 2019-02-15 車載用アンテナ装置

Country Status (5)

Country Link
US (1) US11374328B2 (enExample)
EP (1) EP3758140A4 (enExample)
JP (1) JP6956650B2 (enExample)
CN (1) CN111630713B (enExample)
WO (1) WO2019160078A1 (enExample)

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JP2019145943A (ja) 2019-08-29
EP3758140A4 (en) 2021-11-17
CN111630713B (zh) 2024-01-05
EP3758140A1 (en) 2020-12-30
US20210050647A1 (en) 2021-02-18
CN111630713A (zh) 2020-09-04
JP6956650B2 (ja) 2021-11-02
US11374328B2 (en) 2022-06-28

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