Vehicle-mounted antenna device

Abstract

To provide a technology capable of easily assembling an on-vehicle antenna device.SOLUTION: In an on-vehicle antenna device, a first antenna portion 10 includes a first coil portion having a first coil element 16 and a first coil holder 17, and a first antenna holder 13 that holds the first coil portion and is fixed to a metal base in the z direction. The first coil portion is assembled to the first antenna holder 13 from the x direction intersecting the z direction. The first coil portion is provided with a first arm region 170 used for assembling the first coil portion to the first antenna holder 13.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to an in-vehicle antenna device. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1, an in-vehicle antenna device including a capacitive loading element and a coil element has been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-191274 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, for example, the coil elements are attached to the holding member from a direction parallel to the central axis, for example, from below. For this reason, when assembling the vehicle-mounted antenna device, the coil element is hidden by the holding member and is difficult to see, making it difficult to assemble the vehicle-mounted antenna device.

[0005] SUMMARY OF THE PRESENT DISCLOSURE It is therefore an object of the present invention to facilitate the assembly of an in-vehicle antenna device. [Means for solving the problem]

[0006] The vehicle-mounted antenna device according to the present invention includes an antenna element portion having an element, and a holder that holds the antenna element portion and is fixed to a fixed member in a first direction. The antenna element portion is attached to the holder from a second direction that intersects with the first direction. One of the antenna element portion and the holder is provided with an arm region that is used to attach the antenna element portion to the holder. Effect of the Invention

[0007] As described above, according to the present invention, the assembly of the vehicle-mounted antenna device can be facilitated. [Brief description of the drawings]

[0008] [Figure 1] 1 is an exploded perspective view of an in-vehicle antenna device according to a first embodiment; [Diagram 2] 1 is a perspective view of an in-vehicle antenna device of a first embodiment, with the antenna case omitted, as viewed from the upper right rear. [Diagram 3] 1 is a perspective view of an in-vehicle antenna device of a first embodiment, with the antenna case omitted, viewed from the upper left rear. FIG. [Figure 4] 1 is a perspective view of an in-vehicle antenna device of a first embodiment, from which an antenna case and a second antenna unit are omitted, viewed from the upper right rear. FIG. [Diagram 5] 1 is a perspective view of an in-vehicle antenna device of a first embodiment from which an antenna case and a second antenna unit are omitted, as viewed from the upper left rear. [Figure 6] 1 is a side view of the vehicle-mounted antenna device of the first embodiment, with the antenna case omitted. [Figure 7] FIG. 2 is a perspective view of the first antenna unit of the first embodiment as viewed from the upper left rear. [Figure 8] FIG. 2 is an exploded perspective view of the first antenna unit of the first embodiment, as viewed from the upper left rear. [Figure 9] FIG. 2 is an exploded perspective view of the first antenna unit of the first embodiment, as viewed from the lower left rear. [Figure 10] FIG. 2 is an exploded perspective view of the first antenna unit of the first embodiment, as viewed from the lower right rear. [Figure 11] FIG. 4 is a rear view of the first antenna unit and the first substrate in the first embodiment. [Figure 12] 12 is a cross-sectional view taken along the line AA in FIG. 11. [Figure 13] 13 is a bottom view of the second antenna unit of the first embodiment, including a second connection portion provided on the outer side of the second antenna holder. FIG. [Figure 14] 13 is a bottom view of the second antenna portion of the first embodiment, including a second connection portion provided on the inside of the second antenna holder. FIG. [Figure 15] FIG. 11 is a perspective view of a first antenna unit according to a second embodiment, as viewed from the upper right rear. [Figure 16] FIG. 11 is an exploded perspective view of a first antenna unit according to a second embodiment, as viewed from the upper right rear. [Figure 17] 13 is a perspective view of a first coil element, a first coil holder, and a first connecting fitting of a second embodiment, as viewed from the upper left front. FIG. [Figure 18] 13 is a perspective view of the second antenna portion before the second coil portion is attached according to the third embodiment, as viewed from the upper left front. FIG. [Figure 19] 13 is a perspective view of the second antenna portion before the second coil portion is attached according to the third embodiment, as viewed from the lower left front. FIG. [Figure 20] 13 is a perspective view of the second antenna portion after the second coil portion of the third embodiment is attached, as viewed from the upper left front. FIG. [Figure 21] FIG. 13 is a side view of a third antenna unit, the antenna board holder, a third board, and a metal base before the third antenna unit of the fourth embodiment is attached to the antenna board holder. [Figure 22] FIG. 13 is a side view of the third antenna unit, the antenna board holder, the third board, and the metal base before the antenna board holder to which the third antenna unit of the fourth embodiment is attached is attached to the metal base. [Figure 23] FIG. 13 is a side view of the third antenna unit, the antenna board holder, the third board, and the metal base after the antenna board holder to which the third antenna unit of the fourth embodiment is attached is attached to the metal base. [Figure 24] FIG. 13 is a side view of a third antenna unit, the antenna board holder, a third board, and a metal base before the third antenna unit of the fifth embodiment is attached to the antenna board holder. [Diagram 25] FIG. 13 is a side view of the third antenna unit, the antenna board holder, the third board, and the metal base before the antenna board holder to which the third antenna unit of the fifth embodiment is attached is attached to the metal base. [Figure 26]FIG. 13 is a side view of a third antenna unit, the antenna board holder, a third board, and a metal base before the third antenna unit of the sixth embodiment is attached to the antenna board holder. [Figure 27] FIG. 13 is a side view of the third antenna unit, the antenna board holder, the third board, and the metal base before the antenna board holder to which the third antenna unit of the sixth embodiment is attached is attached to the metal base. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the vehicle-mounted antenna device according to the first embodiment will be described with reference to the drawings. The embodiments are not limited to the following embodiments. In principle, the contents described in one embodiment are also applicable to other embodiments. The embodiments and modifications can be combined as appropriate.

[0010] Incidentally, a first antenna holder 13, a second antenna holder 23, and an antenna board holder 33, which will be described later, correspond to the "holding tool" in the claims. Moreover, a first coil portion 15, a second coil portion 25, and a third antenna portion 35, which will be described later, correspond to the "antenna element portion" in the claims. Further, a first coil holder 17, a second coil holder 27, and an antenna board 37, which will be described later, correspond to an "element holding portion" in the claims. Moreover, a first coil element 16, a second coil element 26, and an antenna pattern 36, which will be described later, correspond to the "elements" in the claims. Moreover, a first arm region 170, a second arm region 270, and a third arm region, which will be described later, correspond to the "arm regions" in the claims. Moreover, a first clamping area 130, a second clamping area 230, and a third clamping area 330, which will be described later, correspond to the "clamping area" in the claims. Further, antenna case 5, metal base 50, resin base 60, and substrates (first substrate 19, second substrate 29, third substrate 39) described below correspond to the "fixed member of the holder" in the claims. Moreover, a rib 14f1 (first stopper), a second stopper 231, and a third stopper 331, which will be described later, correspond to the "stopper" in the claims. Moreover, a first capacitance loading element 11 and a second capacitance loading element 21 described below correspond to "another antenna element" in the claims.

[0011] (First embodiment) The vehicle-mounted antenna device 1 in the first embodiment is attached to the upper surface of the vehicle, such as the roof. For example, as shown in Figures 1 to 13, the vehicle-mounted antenna device 1 includes an antenna case 5, a pad 7, a first antenna section 10, a first substrate 19, a second antenna section 20, a second substrate 29, a metal base 50, a resin base 60, a waterproof seal 70, and a mounting member 80.

[0012] In the following, for the purpose of explaining the directions, the front-rear direction of the vehicle on which the vehicle-mounted antenna device 1 is mounted is defined as the x direction, the left-right direction perpendicular to the x direction is defined as the y direction, and the approximately vertical direction perpendicular to the x and y directions is defined as the z direction. In addition, in Fig. 1, the directions indicated by the arrows on the x, y, and z axes are defined as the forward direction, rightward direction, and upward direction, respectively.

[0013] (Antenna case 5) The antenna case 5 is made of a radio wave transparent synthetic resin. The antenna case 5 is inclined so that the front in the x direction is lower than the rear in the x direction, and has a shark fin shape with both side surfaces curved inward.

[0014] The antenna case 5 is open at the bottom and is a component that constitutes the in-vehicle antenna device 1. As shown in Fig. 1, the antenna case 5 covers a part of the pad 7, the first antenna section 10, the first substrate 19, the second antenna section 20, the second substrate 29, the metal base 50, the resin base 60, etc. from above in the z direction. Therefore, the first antenna unit 10 and the second antenna unit 20 are housed in the internal space of the antenna case 5. The antenna case 5 is attached to a resin base 60 by means of screws or the like.

[0015] (Pad 7) 2 to 6, the pad 7 is an annular elastic member made of elastomer, rubber, etc. The pad 7 is sandwiched between the lower edge of the antenna case 5 and the resin base 60. The pad 7 covers the gap between the lower edge of the antenna case 5 and the vehicle, and prevents water from entering the antenna case 5.

[0016] (First antenna unit 10) As shown in FIG. 7, the first antenna section 10 has a first capacitive loading element 11, a first antenna holder 13, a first coil section 15 (a first coil element 16, a first coil holder 17), and a first connecting fitting 18. The first antenna unit 10 is used to receive, for example, DAB (Digital Audio Broadcast).

[0017] (First capacitive loading element 11) The first capacitive loading element 11 is formed by processing a tin-plated steel sheet (conductor sheet). As shown in FIG. 8, the first capacitive loading element 11 has an eleventh element 11a and a twelfth element 11b.

[0018] The eleventh element 11a has a surface that is approximately parallel to the xz plane. The upper part of the surface of the eleventh element 11a that is approximately parallel to the xz plane has a hypotenuse that is lower in the front in the x direction and higher in the rear in the x direction. The lower part of the surface of the eleventh element 11a that is approximately parallel to the xz plane has a stepped shape that is lower in the front in the x direction and higher in the rear in the x direction. That is, a substantially rectangular notch is provided on the lower part of a surface of the eleventh element 11a that is substantially parallel to the xz plane, toward the rear in the x direction.

[0019] The eleventh element 11a is inserted into the first antenna holder 13 from above in the z direction. A hook-shaped first connection point 11a1 is provided at the rear lower end of the eleventh element 11a in the x-direction. Furthermore, an attachment portion 11a2 is provided at the rear lower end of the eleventh element 11a in the x direction and forward of the first connection point 11a1 in the x direction. The attachment portion 11a2 extends rightward in the y direction and includes a surface perpendicular to the z direction. The mounting portion 11a2 is provided with a first mounting hole 11a3 that penetrates in the z direction. The first mounting hole 11a3 is used for screwing the second mounting hole 14c1 of the first antenna holder 13 and the third mounting hole 17c1 of the first coil holder 17 (screwing the second fixing region).

[0020] The twelfth element 11b is a slope extending rightward in the y direction from the hypotenuse of the eleventh element 11a. That is, the twelfth element 11b extends rightward in the y direction from the side (upper side) opposite to the side (lower side) facing the metal base 50 and the resin base 60 of the eleventh element 11a. Therefore, the angle formed by the metal base 50 and the resin base 60 of the twelfth element 11b is smaller than the angle formed by the metal base 50 and the resin base 60 of the eleventh element 11a. When viewed from above in the z direction, a notch 11b1 is provided in a region overlapping with the first mounting hole 11a3 of the twelfth element 11b. The eleventh element 11a and the twelfth element 11b are integrally configured and formed by bending a single metal plate or the like.

[0021] (First antenna holder 13) The first antenna holder 13 is made of resin. The first antenna holder 13 holds the first capacitive loading element 11 at the upper side in the z direction, and holds the first coil holder 17 at the rear side in the x direction. The first antenna holder 13 has a holding portion 13a, a right leg portion 13b, and a left leg portion 13c. The holding portion 13a, the right leg portion 13b and the left leg portion 13c are integrally formed.

[0022] The holding portion 13a has an upper holding area 13a1 and a lower holding area 13a2. The upper holding region 13a1 has a slope portion 14a that is substantially parallel to the twelfth element 11b. The twelfth element 11b is disposed on the upper surface of the inclined portion 14a. The inclined surface portion 14a is provided with a recess 14b extending downward in the z-direction. The eleventh element 11a is inserted into this recess 14b.

[0023] The lower holding area 13a2 is located behind the first antenna holder 13 in the x direction, and is located below the upper holding area 13a1 in the z direction. As shown in FIGS. 9 and 10, the lower holding area 13a2 has a generally groove-shaped yz cross section as viewed from the x direction, and has an upper surface portion 14c, a right side surface portion 14d, and a left side surface portion 14e.

[0024] The top surface portion 14c has a surface that is approximately perpendicular to the z direction. The top surface portion 14c has a second mounting hole 14c1 penetrating therethrough in the z direction.

[0025] The right side surface portion 14d extends downward in the z direction from the right end of the top surface portion 14c when viewed from behind in the x direction, and has a surface that is approximately parallel to the xz plane. The left side surface portion 14e extends downward in the z direction from the left end of the top surface portion 14c when viewed from behind in the x direction, and has a surface that is approximately parallel to the xz plane. Right side surface portion 14d and left side surface portion 14e sandwich first upper end portion 17c of first coil holder 17 in the y direction.

[0026] A protrusion 14d1 is provided on the surface of the right side surface portion 14d facing the left side surface portion 14e. The protrusion 14d1 is used to hold the right end portion (first arm region 170) of the first upper end portion 17c of the first coil holder 17 when viewed from behind in the x-direction in a groove (first clamping region 130) between the protrusion 14d1 and the upper surface portion 14c. The first clamping area 130 is an area surrounded by the top surface portion 14c, the right side surface portion 14d, and a rear surface portion 14f, which will be described later. A claw 14e1 serving as a locking portion is provided on the surface of the left side surface portion 14e facing the right side surface portion 14d. The claws 14e1 are used for snap-fastening with the locked portion 17c3 of the first coil holder 17.

[0027] Further, a rear surface portion 14f having a surface approximately parallel to the yz plane is provided in front of the top surface portion 14c, the right side surface portion 14d, and the left side surface portion 14e in the x direction. The rear surface portion 14f is provided with a rib 14f1 that protrudes rearward in the x direction. The rib 14f1 is used as a receiving portion that comes into contact with the first coil holder 17 that is slid and inserted from the rear in the x direction.

[0028] When viewed from behind in the x direction, a right leg 13b extends downward in the z direction from the right end of the holder 13a in the y direction. The lower end of the right leg 13b is attached to a metal base 50 by snap fastening, screw fastening or the like. When viewed from behind in the x direction, a left leg 13c extends downward in the z direction from the left end of the holding portion 13a in the y direction. The lower end of the left leg 13c is attached to a metal base 50 by snap fastening, screw fastening or the like. The right leg 13b and the left leg 13c may be attached to a resin base 60.

[0029] A first arm holding portion 13c1 is provided between the lower end and the upper end of the left leg portion 13c. The first arm holding portion 13c1 holds one end of the first arm portion 17b of the first coil holder 17. The first arm holding portion 13c1 is provided with a first arm attachment hole 13c2 into which a screw is inserted. The first arm attachment hole 13c2 is used for screwing into the second arm attachment hole 17b1 of the first arm 17b of the first coil holder 17 (screw fastening of the first fixing region).

[0030] As shown in FIG. 11, the first coil holder 17 is sandwiched between the upper surface portion 14c of the lower holding region 13a2 and the first arm holding portion 13c1 of the left leg 13c. The first coil holder 17 is prevented from falling off the first antenna holder 13 by the first upper end 17c engaging with the lower holding area 13a2 and one end of the first arm 17b being placed on the first arm holding portion 13c1. The first coil holder 17 is fixed to the first antenna holder 13 by screwing the first upper end portion 17c through the first mounting hole 11a3, the second mounting hole 14c1, and the third mounting hole 17c1, and by screwing one end of the first arm portion 17b through the first arm mounting hole 13c2 and the second arm mounting hole 17b1. Furthermore, the first capacitive loading element 11 is fixed to the first antenna holder 13 when the first upper end portion 17c of the first coil holder 17 is screwed.

[0031] (First coil portion 15) The first coil section 15 has a first coil element 16 and a first coil holder 17 . In the first embodiment, an example in which the first coil holder 17 is attached to the first antenna holder 13 will be described. However, a portion of the first coil portion 15 other than the first coil holder 17, such as the first coil element 16, may be attached to the first antenna holder 13 from the rear in the x direction. Furthermore, when the first coil element 16 is attached directly to the first antenna holder 13, the first coil holder 17 may be omitted.

[0032] (First coil element 16) The first coil element 16 is made of a conductor. The first coil element 16 has a spiral portion (coil) that functions as a wavelength shortening element. The central axis of the spiral portion of the first coil element 16 extends substantially parallel to the z direction. A connection line extending from the upper end of the spiral portion of the first coil element 16 is connected to a first connection point 11a1 at the rear lower end in the x-direction of the eleventh element 11a of the first capacitive loading element 11 by soldering. A connection wire extending from the lower end of the spiral portion of first coil element 16 is connected to a first connection fitting 18 attached to first arm portion 17b of first coil holder 17 by soldering.

[0033] The first coil element 16 is disposed below the first capacitive loading element 11 in the z direction and at a position shifted rightward in the y direction from the xz plane Pxz including the center line LX when viewed from behind in the x direction. The center line LX is the center line of the metal base 50 and the resin base 60 in the y direction (left-right direction) (see FIG. 1).

[0034] (First coil holder 17, first connecting fitting 18) The first coil holder 17 is made of resin. The first coil holder 17 holds the first coil element 16 (see FIGS. 8 to 10). The first coil holder 17 has a first bobbin 17a, a first arm portion 17b, and a first upper end portion 17c.

[0035] A conductor constituting the first coil element 16 is wound around the first bobbin 17a to form the spiral portion (coil) of the first coil element 16. The first arm portion 17b is located below (at the other end of) the first bobbin 17a in the z direction. The first upper end 17c is located at the upper end (one end) of the first bobbin 17a in the z direction. The first bobbin 17a, the first arm portion 17b, and the first upper end portion 17c are integrally formed.

[0036] The coil of the first coil element 16 is not limited to being formed inside the coil and held by the first bobbin 17a around which the conductor constituting the first coil element 16 is wound. For example, a hollow holding member (not shown) with a groove on the inside may hold the coil of the first coil element 16 from outside the coil. In this case, the coil of the first coil element 16 is formed to fit into the groove of the holding member.

[0037] First arm 17b extends from a lower portion of the area of ​​first coil holder 17 that holds the spiral portion (coil). Specifically, the first arm portion 17b extends leftward in the y direction from a lower portion of the first bobbin 17a when viewed from behind in the x direction. A first connecting fitting 18 is attached to the first arm portion 17b. A second arm attachment hole 17b1 is provided at the left end (one end) in the y direction of the first arm 17b. The left end (one end) of the first arm 17b in the y direction is held by a first arm holding portion 13c1 of the left leg 13c of the first antenna holder 13.

[0038] The first upper end portion 17c has a third mounting hole 17c1 into which a screw is inserted. A recess 17c2 is provided on the side of the first upper end portion 17c, on the right side in the y direction, between the first bobbin 17a (see FIG. 10). The projection 14d1 of the first antenna holder 13 fits into the recess 17c2, thereby holding the right end (first arm region 170) of the first upper end 17c as viewed from the rear in the x direction (see FIG. 11). A locked portion 17c3 is provided on the side of the first upper end portion 17c, on the left side in the y direction. The latched portion 17c3 engages with the claw 14e1 of the first antenna holder 13. That is, a first arm region 170 (right end portion) extending rightward in the y direction is formed above the recess 17c2 of the first upper end portion 17c in the z direction. The first arm region 170 enters the first clamping region 130 of the first antenna holder 13, and thereby the first upper end portion 17c is held.

[0039] The first connecting fitting 18 is used for electrically connecting the first coil element 16 and the first substrate 19 . A first tip 18a extending downward in the z direction is provided at the front of the first connecting fitting 18 in the x direction, that is, on the side of the first connecting fitting 18 facing the first antenna holder 13 in the x direction. The first tip portion 18a is located on the left side when viewed from the rear in the x direction.

[0040] (Assembly Instructions) The procedure for assembling the first antenna unit 10 will now be described. The first coil element 16 is formed in advance on the first bobbin 17a of the first coil holder 17 by winding a wire in a spiral shape. Furthermore, a first connecting fitting 18 is attached to the first arm portion 17b of the first coil holder 17. A connection wire extending from the lower end of the spiral portion of the first coil element 16 is connected to a first connection fitting 18 attached to the first coil holder 17 by soldering.

[0041] The first upper end portion 17c of the first coil holder 17 is slidably inserted into the lower holding region 13a2 of the first antenna holder 13 from the rear in the x direction. At this time, the right end of first upper end portion 17c as viewed from the rear in the x direction is inserted into the area between upper surface portion 14c of lower holding region 13a2 and protrusion 14d1. That is, protrusion 14d1 fits into recess 17c2. As shown in FIG. 12, a locked portion 17c3 at the left end of the first upper end 17c when viewed from the rear in the x direction engages with the claw 14e1 of the lower holding region 13a2. Moreover, the left end of first arm portion 17b of first coil holder 17 when viewed from the rear in the x direction is located above first arm holding portion 13c1. Therefore, the first coil holder 17 is held by the first antenna holder 13 . At this time, second arm mounting hole 17b1 of first coil holder 17 and first arm mounting hole 13c2 of first antenna holder 13 overlap in the z direction.

[0042] Next, the eleventh element 11a of the first capacitance loading element 11 is inserted into the recess 14b of the upper holding area 13a1 from above in the z direction. At this time, the first mounting hole 11a3 of the first capacitive loading element 11, the second mounting hole 14c1 of the first antenna holder 13, and the third mounting hole 17c1 of the first coil holder 17 overlap in the z direction.

[0043] A screw is inserted from above in the z direction into the area where second arm mounting hole 17b1 of first coil holder 17 and first arm mounting hole 13c2 of first antenna holder 13 overlap, and screwed together (screw fastening of the first fixing area). From above in the z direction, a screw is inserted into the area where the first mounting hole 11a3 of the first capacitive loading element 11, the second mounting hole 14c1 of the first antenna holder 13, and the third mounting hole 17c1 of the first coil holder 17 overlap, and screwed in (screw fastening of the second fixing area). As a result, the first capacitive loading element 11 and the first coil holder 17 are fixed to the first antenna holder 13 . Thereafter, the connection wire extending from the upper end of the spiral portion of the first coil element 16 is connected to the first connection point 11a1 of the first capacitive loading element 11 by soldering. Then, the assembly of the first antenna section 10, which is composed of the first capacitive loading element 11, the first antenna holder 13, the first coil section 15 (the first coil holder 17 and the first coil element 16), and the first connecting fitting 18, is completed.

[0044] In the above-described assembly procedure, the first coil holder 17 is attached to the first antenna holder 13, and then the first capacitance loading element 11 is attached. However, the first coil holder 17 may be attached to the first antenna holder 13 after the first capacitance loading element 11 is attached. Also, the first coil holder 17 may be attached to the first antenna holder 13 after the first antenna holder 13 to which the first coil holder 17 and the first capacitive loading element 11 are attached is attached to the metal base 50 .

[0045] (First substrate 19) The first substrate 19 has circuits related to the antenna elements of the first antenna unit 10 (the first capacitive loading element 11 and the first coil element 16) and the like. The first substrate 19 is provided with a first connection portion 19a.

[0046] The first connection portion 19a is located on the left in the y direction when viewed from the rear in the x direction. That is, the first coil element 16, the first tip portion 18a, and the first connection portion 19a are in a positional relationship sandwiching an xz plane Pxz including the center line LX when viewed from the x direction.

[0047] The first connecting portion 19a is electrically connected to the first connecting fitting 18 while clamping the first tip portion 18a of the first connecting fitting 18. A cable electrically connected to the first substrate 19 extends through cable holes provided in the metal base 50 and the resin base 60 to the area under the roof of the vehicle.

[0048] When the right leg 13b and left leg 13c of the first antenna holder 13 are attached to the metal base 50, the first tip 18a of the first connecting fitting 18 is clamped to the first connection portion 19a of the first board 19 on the metal base 50. As a result, the first capacitive loading element 11, the first coil element 16, the first connecting fitting 18, and the first substrate 19 are electrically connected to each other.

[0049] (Second antenna part 20) The second antenna section 20 has a second capacitive loading element 21, a second antenna holder 23, a second coil section 25 (second coil element 26, second coil holder 27), and a second connecting fitting 28 (see FIGS. 2, 3, and 6). The second antenna unit 20 is used to receive, for example, FM and AM broadcasts.

[0050] The second antenna section 20 is disposed rearward of the first antenna section 10 in the x direction. However, the second antenna section 20 may be disposed further forward in the x direction than the first antenna section 10.

[0051] (Second capacitive loading element 21) The second capacitive loading element 21 is formed by processing a tin-plated steel sheet (conductor sheet). The second capacitive loading element 21 has a first element 21a and a second element 21b. The 21st element 21a is located on the right side in the y direction when viewed from the rear in the x direction. The 22nd element 21b is located on the left in the y direction when viewed from behind in the x direction. A hook-shaped second connection point 22 is provided at the front lower end of the 22nd element 21b in the x-direction (see FIGS. 6 and 13). The 21st element 21a and the 22nd element 21b are inclined so that their lower portions move away from each other and their upper portions move closer to each other when viewed in the x direction. The 21st element 21a and the 22nd element 21b are connected by a metal plate (connecting portion, not shown) disposed below. The 21st element 21a, the 22nd element 21b and the connecting portion are integrally constructed and are formed by bending a single metal plate or the like. The 21st element 21a, the 22nd element 21b, and the connecting portion are configured to have a meandering shape (meander shape) by bending a single metal plate.

[0052] The second connection point 22 protrudes leftward from the 22nd element 21b when viewed from the rear in the x direction. In the first embodiment, an example is shown in which the second connection point 22 is provided on the outer side of the second antenna holder 23. However, the second connection point 22 may be provided in another location. For example, as shown in Fig. 14, a mode in which the second connection point 22 is provided so as to be located on the inner side of the second antenna holder 23 is conceivable. In this case, the second connection point 22 is connected to the lower surface of the coupling portion or the inner surface of the 21st element 21a (or the 22nd element 21b).

[0053] (Second antenna holder 23) The second antenna holder 23 is made of resin. The second antenna holder 23 holds the second capacitive loading element 21 at the upper side in the z direction, and holds the second coil holder 27 at the lower side in the z direction. The second antenna holder 23 has an upper holder 23a, a lower holder 23b, and legs 23c.

[0054] The upper holder 23 a is inserted inside the second capacitive loading element 21 . The lower holder 23b is provided below the second capacitive loading element 21. The legs 23c extend downward in the z direction from the lower holder 23b. The lower end of leg 23c is attached to metal base 50 by snap fastening, screw fastening or the like. The lower holder 23b and the legs 23c are integrally formed. The leg portion 23c may be attached to a resin base 60.

[0055] The second antenna holder 23 holds the second capacitance loading element 21 such that the upper holder 23a and the lower holder 23b sandwich the connecting portion of the second capacitance loading element 21 in the z direction. However, the holding of the second capacitive loading element 21 by the second antenna holder 23 is not limited to the form of sandwiching it between two separate holders (upper holder 23a and lower holder 23b) separated vertically, and may be performed in other ways.

[0056] (Second coil portion 25) The second coil section 25 has a second coil element 26 and a second coil holder 27 . In the first embodiment, an example in which the second coil holder 27 is attached to the second antenna holder 23 is shown. However, a portion of the second coil portion 25 other than the second coil holder 27, such as the second coil element 26, may be attached to the second antenna holder . Furthermore, when the second coil element 26 is attached directly to the second antenna holder 23, the second coil holder 27 may be omitted.

[0057] (Second coil element 26) The second coil element 26 is made of a conductor. The second coil element 26 has a spiral portion (coil) that functions as a wavelength shortening element. The central axis of the spiral portion of the second coil element 26 extends substantially parallel to the z direction. A connection line extending from the upper end of the spiral portion of the second coil element 26 is connected to a second connection point 22 at the front lower end in the x-direction of the 22nd element 21b of the second capacitive loading element 21 by soldering. A connection wire extending from the lower end of the spiral portion of second coil element 26 is connected to second connection fitting 28 attached to second arm portion 27b of second coil holder 27 by soldering.

[0058] The second coil element 26 is disposed below the second capacitive loading element 21 in the z direction and at a position shifted leftward in the y direction from the xz plane including the center line LX when viewed from behind in the x direction. That is, the first coil element 16 and the second coil element 26 are positioned on either side of the xz plane Pxz including the center line LX when viewed from the x direction.

[0059] (Second coil holder 27, second connecting fitting 28) The second coil holder 27 is made of resin. The second coil holder 27 holds the second coil element 26 (see FIG. 6). The second coil holder 27 has a second bobbin 27a and a second arm portion 27b.

[0060] A conductor constituting the second coil element 26 is wound around the second bobbin 27a to form the spiral portion (coil) of the second coil element 26. The second arm portion 27b is located below the second bobbin 27a in the z direction. The second bobbin 27a and the second arm portion 27b are integrally formed.

[0061] The coil of the second coil element 26 is not limited to being formed inside the coil and held by the second bobbin 27a around which the conductor constituting the second coil element 26 is wound. For example, a hollow holding member (not shown) with a groove on the inside may hold the coil of the second coil element 26 from outside the coil. In this case, the coil of the second coil element 26 is formed so as to fit into the groove of the holding member.

[0062] The second arm 27b extends from a lower portion of the area of ​​the second coil holder 27 that holds the spiral portion (coil). Specifically, the second arm portion 27b extends forward in the x direction from a lower portion of the second bobbin 27a when viewed in the y direction. A second connecting fitting 28 is attached to the second arm portion 27b.

[0063] With the second coil element 26 attached, the second coil holder 27 is attached to the lower holder 23b of the second antenna holder 23 from below in the z direction by screwing or the like.

[0064] The second connecting fitting 28 is used for electrically connecting the second coil element 26 and the second substrate 29 . A second tip portion 28a extending downward in the z direction is provided at the front of the second connecting fitting 28 in the x direction (see FIG. 2).

[0065] (Second substrate 29) The second substrate 29 has an antenna amplifier that amplifies a signal received by the antenna elements of the second antenna section 20 (the second capacitive loading element 21 and the second coil element 26), and the like. The second substrate 29 is provided with a second connection portion 29a (see FIGS. 4 and 5).

[0066] The second connecting portion 29a is electrically connected to the second connecting fitting 28 while clamping the second tip portion 28a of the second connecting fitting 28. A cable electrically connected to the second substrate 29 extends through cable holes provided in the metal base 50 and the resin base 60 to the area under the roof of the vehicle.

[0067] (Metal base 50) The metal base 50 holds the first antenna holder 13 , the first substrate 19 , the second antenna holder 23 , and the second substrate 29 . A rear metal base 55, which is a metal plate, is attached to the rear of the metal base 50 in the x direction.

[0068] (Resin base 60, waterproof seal 70, mounting member 80) The resin base 60 holds the metal base 50 . A waterproof seal 70, which is an annular elastic member made of elastomer, rubber, urethane foam, or the like, is provided on the lower surface of the resin base 60. A waterproof seal 70 provides a watertight seal between the resin base 60 and the vehicle roof around the area where the mounting holes are provided. Mounting members 80 such as capture fasteners, claw washers, and nuts are attached to the underside of the resin base 60. The vehicle-mounted antenna device 1 including the resin base 60 is fixed to the upper surface of the roof using a mounting member 80.

[0069] In the first embodiment, the first coil portion 15, specifically the first coil holder 17 to which the first coil element 16 is attached, is attached to the first antenna holder 13 by slidingly inserting it from the rear in the x direction.

[0070] In the first embodiment, an example is shown in which the first coil holder 17 is attached to the first antenna holder 13 from the rear in the x direction. However, the first coil holder 17 may be attached from another direction different from the central axis of the spiral portion of the first coil element 16, such as from the front in the x direction or from the y direction.

[0071] Furthermore, first coil portion 15, specifically first coil holder 17, is attached and temporarily fixed to first antenna holder 13 by snapping together claw 14e1 and locked portion 17c3. Therefore, first coil portion 15 can be easily positioned at the location where first antenna holder 13 is to be attached, before fixing with screws or the like.

[0072] Furthermore, the engagement members used for snap fastening (claw 14e1 of first antenna holder 13, locked portion 17c3 of first coil holder 17) are provided on the side where first arm portion 17b is held by first antenna holder 13. Therefore, compared to a configuration in which the engaging member used for snap fastening is provided in another location, for example, on the opposite side to the side where first arm 17b is held by first antenna holder 13, the protruding portion of the engaging member does not protrude from the opposite side, making it possible to reduce the size of first coil holder 17 in the y direction.

[0073] In addition, the first arm portion 17b is held by the first antenna holder 13. Therefore, first coil holder 17 engages with first antenna holder 13, making it difficult for first coil holder 17 to fall off first antenna holder 13. Furthermore, by screwing first arm attachment hole 13c2 and second arm attachment hole 17b1, first tip portion 18a is firmly inserted into first connection portion 19a and is unlikely to come off.

[0074] Furthermore, a rib 14f1 that contacts the first coil portion 15, specifically, the first upper end portion 17c of the first coil holder 17, is provided on the surface (rear surface portion 14f) of the first antenna holder 13 that faces the first coil holder 17. By providing the rib 14f1, it is possible to prevent the occurrence of sink marks on the rear surface portion 14f when the first antenna holder 13 is molded. In addition, rib 14f1 contacts first upper end 17c of first coil holder 17 when first arm region 170 is fitted into first clamping region 130, and is also used as a first stopper that limits the sliding movement of first coil holder 17 in the x-direction.

[0075] The first coil element 16 is located on the right side in the y direction when viewed from behind in the x direction, and the first tip portion 18a is located on the left side in the y direction when viewed from behind in the x direction. That is, the area (first tip 18a) of the first connecting fitting 18 that contacts the first substrate 19 is located to the side of the first coil holder 17 (y direction) when viewed from the x direction (the direction in which the first coil holder 17 is inserted). This makes it easier to insert the first tip portion 18a into the first substrate 19 compared to a configuration in which the area of ​​the first connecting fitting 18 that contacts the first substrate 19 (first tip portion 18a) and the first coil element 16 are aligned in the x-direction.

[0076] The area (first tip portion 18a) of the first connecting fitting 18 that contacts the first substrate 19 is located to the left in the y direction when viewed from behind in the x direction, and the first coil portion 15 is located to the right in the y direction when viewed from behind in the x direction. That is, the first capacitive loading element 11 is arranged between the first coil element 16 and the area of ​​the first connecting fitting 18 that contacts the first substrate 19 when viewed from the direction in which the central axis of the spiral portion of the first coil element 16 extends (z direction). This makes it easier to place other members in the empty space below the first capacitive loading element 11 in the z direction.

[0077] The first capacitive loading element 11, the first antenna holder 13 and the first coil portion 15 (first coil holder 17) are screwed in the second fixing region (the region where the first mounting hole 11a3, the second mounting hole 14c1 and the third mounting hole 17c1 overlap). Therefore, compared to a configuration in which screws are not used, the first capacitive loading element 11, the first antenna holder 13, and the first coil portion 15 (first coil holder 17) can be more firmly fixed.

[0078] Also, first antenna holder 13 and first coil portion 15 (first coil holder 17) are screwed in a first fixing region (a region where first arm portion attachment hole 13c2 and second arm portion attachment hole 17b1 overlap). The first fastening region and the second fastening region are screwed from the same direction, that is, from above in the z direction. Therefore, the screw fastening process can be simplified compared to a configuration in which the screws are fastened from different directions.

[0079] Although the central axis of the spiral portion of the first coil element 16 has been described as extending substantially parallel to the z direction, the present invention is not limited to this embodiment. For example, the central axis of the spiral portion of the first coil element 16 may extend substantially parallel to a direction tilted from the z direction to the x direction or y direction by a predetermined angle α. In this case as well, the first coil holder 17 is attached to the first antenna holder 13 from a direction different from the direction in which the central axis of the spiral portion extends.

[0080] Although the first capacitive loading element 11 has been described as being formed by processing a tin-plated steel sheet (conductor sheet), the embodiment is not limited to this. For example, the first capacitive loading element 11 may be formed by printing a pattern on a substrate.

[0081] (Effect of assembly using the first arm region 170) Alignment is facilitated by fitting the first arm region 170, which protrudes from other regions, into the antenna element portion (first coil portion 15). Therefore, compared to a configuration in which the first arm region 170 is not provided on the antenna element portion (first coil portion 15), it is easier to attach the antenna element portion (first coil portion 15) to the holder (first antenna holder 13), i.e., it is easier to assemble the vehicle-mounted antenna device 1. Also, compared to a configuration in which the antenna element portion (first coil portion 15) is attached to the holder (first antenna holder 13) from below in the z direction, when assembling the vehicle-mounted antenna device 1, the element (first coil element 16) and the like are more easily visible, making assembly easier.

[0082] (Effect of assembly using the first clamping region 130) By the sliding movement in the second direction (x direction), the first arm region 170 is fitted into the first clamping region 130, whereby the antenna element portion (first coil portion 15) is assembled to the holder (first antenna holder 13). In addition, the sliding movement of the antenna element portion (first coil portion 15) is restricted by the first stopper (rib 14f1) of the first clamping region 130. Therefore, alignment is easier than in a configuration in which the first clamping region 130 including the first stopper (rib 14f1) is not provided.

[0083] (Effect of fixing the first coil unit 15 and the first antenna holder 13 by screwing instead of just fitting them together) Compared to a configuration in which the antenna element portion (first coil portion 15) and the holder (first antenna holder 13) are only fitted together and not fastened with screws, this configuration makes it possible to more firmly secure the fixation between the antenna element portion (first coil portion 15) and the holder (first antenna holder 13).

[0084] (Effect of providing the first arm portion 17b, etc.) Compared to a configuration that does not use first arm portion 17b etc., the antenna element portion (first coil portion 15) is held more firmly by the holder (first antenna holder 13).

[0085] (Effect of holding the first capacitive loading element 11 above) It becomes possible to hold two antenna elements (first capacitive loading element 11 and first coil element 16) above and below the holder (first antenna holder 13).

[0086] Second embodiment In the first embodiment, the form in which the first arm 17b of the first coil holder 17 is held only by the first arm holding portion 13c1 of the left leg 13c of the first antenna holder 13 has been described. However, as shown in Figures 15 to 17, first arm 17b may protrude not only to the left in the y direction as seen from behind in the x direction, but also to the right in the y direction, and the left end of first arm 17b as seen from behind in the x direction may be held by left leg 13c, and the right end of first arm 17b as seen from behind in the x direction may be held by right leg 13b (second embodiment). In the second embodiment, a second arm holding portion 13b1 that holds the other end of the first arm portion 17b of the first coil holder 17 is provided between the lower end and the upper end of the right leg portion 13b.

[0087] Since both ends of first arm 17b are held at two locations, first arm holding portion 13c1 and second arm holding portion 13b1, it is less susceptible to repulsion from screwing and is easier to maintain fixed, compared to a configuration in which it is held at only one end.

[0088] In the second embodiment, first coil holder 17 is held below to prevent it from falling off first antenna holder 13, and therefore protrusion 14d1 of first antenna holder 13 and recess 17c2 of first coil holder 17 are omitted. However, in the second embodiment as well, the protrusion 14d1 may be provided on the first antenna holder 13, and the recess 17c2 may be provided on the first coil holder 17.

[0089] Third embodiment In the first embodiment, the second coil holder 27 is attached to the lower holder 23b of the second antenna holder 23 by screwing or the like from below in the z direction with the second coil element 26 attached. However, the attachment of the second coil holder 27 to the second antenna holder 23 is not limited to attachment from below in the z direction, but may be performed by sliding in a horizontal direction approximately parallel to the xy plane, similar to the attachment of the first coil holder 17 to the first antenna holder 13 (third embodiment, see Figures 18 to 20). The following description will focus on the differences from the first embodiment.

[0090] (Second clamping region 230 of lower holder 23b) In the third embodiment, a groove (second clamping region 230) that is substantially C-shaped when viewed from the y direction is provided below the lower holder 23b of the second antenna holder 23 in the z direction. The second clamping area 230 is used to hold the second coil holder 27 . In the second clamping region 230, a second stopper 231 constituted by a step or the like is provided. When second coil holder 27 is fitted, second stopper 231 of second clamping region 230 comes into contact with second upper end 27c of second coil holder 27, and limits movement at a predetermined position.

[0091] (Second coil holder 27) The second coil holder 27 of the third embodiment has a second bobbin 27a, a second arm portion 27b, and a second upper end portion 27c. The second arm portion 27b is located below (at the other end of) the second bobbin 27a in the z direction. The second upper end 27c is located at the upper end (one end) of the second bobbin 27a in the z direction. The second bobbin 27a, the second arm portion 27b, and the second upper end portion 27c are integrally formed.

[0092] The second upper end portion 27c has a fifth mounting hole 27c1 into which the screw 31 is inserted. The second upper end 27c is formed with a second arm region 270 extending forward and backward in the x direction. The second arm region 270 enters the second clamping region 230 of the lower holder 23b of the second antenna holder 23, thereby holding the second upper end portion 27c.

[0093] With the second coil element 26 attached, the second coil holder 27 is attached to the lower holder 23b of the second antenna holder 23 from below in the z direction by screwing or the like. Specifically, when the second arm region 270 of the second upper end 27c of the second coil holder 27 is fitted into the second clamping region 230 of the lower holder 23b of the second antenna holder 23 by sliding in the y direction, the fourth mounting hole 23b1 provided in the lower holder 23b and the fifth mounting hole 27c1 provided in the second upper end 27c are fixed via the screw 31.

[0094] In the third embodiment, the second coil portion 25, specifically the second coil holder 27 to which the second coil element 26 is attached, is attached to the second antenna holder 23 by sliding and inserting it from the left in the y direction.

[0095] (Effect of assembly using the second arm region 270) Alignment is facilitated by fitting the second arm region 270, which protrudes from other regions, into the antenna element portion (second coil portion 25). Therefore, compared to a configuration in which the second arm region 270 is not provided on the antenna element portion (second coil portion 25), it is easier to assemble the antenna element portion (second coil portion 25) into the holder (second antenna holder 23), i.e., it is easier to assemble the vehicle-mounted antenna device 1. Also, compared to a configuration in which the antenna element portion (second coil portion 25) is attached to the holder (second antenna holder 23) from below in the z direction, when assembling the vehicle-mounted antenna device 1, the element (second coil element 26) and the like are more easily visible, making assembly easier.

[0096] (Effect of assembly using the second clamping area 230) By the sliding movement in the second direction (y direction), the second arm region 270 is fitted into the second clamping region 230, whereby the antenna element portion (second coil portion 25) is assembled to the holder (second antenna holder 23). In addition, the sliding movement of the antenna element portion (second coil portion 25) is restricted by the second stopper 231 of the second clamping region 230. Therefore, alignment is easier than in a configuration in which the second clamping region 230 including the second stopper 231 is not provided.

[0097] (Effect of fixing the second coil portion 25 and the second antenna holder 23 by screwing instead of just fitting them together) Compared to a configuration in which the antenna element portion (second coil portion 25) and the holder (second antenna holder 23) are only fitted together and not fastened with screws, this configuration makes it possible to more firmly secure the fixation of the antenna element portion (second coil portion 25) and the holder (second antenna holder 23).

[0098] (Effect of holding the second capacitive loading element 21 above) It becomes possible to hold two antenna elements (second capacitive loading element 21 and second coil element 26) above and below the holder (second antenna holder 23).

[0099] In the third embodiment, an example is shown in which the second coil holder 27 is attached to the second antenna holder 23 from the left in the y direction. However, the second coil holder 27 may be attached from another direction different from the central axis of the spiral portion of the second coil element 26, such as from the right in the x direction or the y direction.

[0100] (Fourth embodiment) In the first to third embodiments, an example has been described in which first coil element 16 is held by first coil holder 17, and first coil holder 17 is held by first antenna holder 13. Also, an example has been described in which second coil element 26 is held by second coil holder 27, and second coil holder 27 is held by second antenna holder 23. However, the antenna element held by the two holding members is not limited to a coil element. For example, a case may be considered in which two holding members (antenna board holder 33 and antenna board 37) hold antenna pattern 36 (fourth embodiment, see Figs. 21 to 23).

[0101] The vehicle-mounted antenna device 1 of the fourth embodiment includes an antenna board holder 33, a third antenna section 35 (antenna pattern 36, antenna board 37), and a third board 39 instead of the first antenna holder 13, first coil section 15 (first coil element 16, first coil holder 17), and first board 19 of the first embodiment.

[0102] (Antenna board holder 33) The antenna board holder 33 is made of resin. The antenna board holder 33 holds an antenna board 37 . The antenna board holder 33 has a groove (third clamping region 330). The third clamping area 330 is used to clamp and hold the antenna substrate 37 . In third clamping region 330, third stopper 331 constituted by a wall or the like is provided. When the antenna board 37 is fitted, the third stopper 331 of the third clamping region 330 comes into contact with the antenna board 37 and restricts the movement at a predetermined position.

[0103] (Third antenna part 35) The third antenna unit 35 has an antenna pattern 36 and an antenna substrate 37 . The antenna pattern 36 is made of a conductor and is formed on the surface of an antenna substrate 37 or the like. The antenna substrate 37 is an upright substrate having a surface perpendicular to the y direction. An electronic component such as a coil or a capacitor may be mounted on the antenna substrate 37, and a conductor pattern separate from the antenna pattern 36 may be formed between the antenna pattern 36 and the electronic component. Also, another antenna element may be mounted on the antenna substrate 37 in addition to or instead of the antenna pattern 36. In the fourth embodiment, a pattern (antenna pattern 36, conductor pattern, etc.) is formed on the antenna substrate 37. A third arm region 370 is provided on at least one of the upper and lower ends of the antenna substrate 37. In the fourth embodiment, an example is shown in which the third arm region 370 is provided at the upper end of the antenna substrate 37 and extends upward in the z direction, and at the lower end of the antenna substrate 37 and extends downward in the z direction.

[0104] (Third board 39) The third substrate 39 has a circuit related to the antenna element (antenna pattern 36) of the third antenna unit 35 and the like. The third substrate 39 is provided with a third connection portion 39a.

[0105] The third connection portion 39a is electrically connected to the antenna board 37 in a state in which the electrode portion of the antenna board 37 is sandwiched. A cable electrically connected to the third substrate 39 extends through cable holes provided in the metal base 50 and the resin base 60 to the area under the roof of the vehicle.

[0106] (Installation procedure for the third antenna part 35) The third antenna unit 35 is attached to the antenna board holder 33 by sliding it backward in the x direction (see FIG. 21). Specifically, the third arm region 370 of the antenna substrate 37 is fitted into the groove of the third clamping region 330 until it comes into contact with the third stopper 331 of the third clamping region 330 (see FIG. 22). The antenna board holder 33, which is now holding the third antenna portion 35, is moved downward in the z direction and fixed to a metal base 50 or the like by screws (see FIG. 23). At this time, the antenna board 37 is connected to the third connection portion 39 a of the third board 39 .

[0107] (Effect of assembly using the third arm region 370) Alignment is facilitated by fitting the third arm region 370, which protrudes from other regions, into the antenna element portion (third antenna portion 35). Therefore, compared to a configuration in which the third arm region 370 is not provided on the antenna element portion (third antenna portion 35), it is easier to attach the antenna element portion (third antenna portion 35) to the holder (antenna board holder 33), i.e., it is easier to assemble the vehicle-mounted antenna device 1. Also, compared to a configuration in which the antenna element portion (third antenna portion 35) is attached to the holder (antenna board holder 33) from below in the z direction, the element (antenna pattern 36) and the like are more easily visible when assembling the vehicle-mounted antenna device 1, making assembly easier.

[0108] (Effect of assembly using the third clamping area 330) By the sliding movement in the second direction (x direction), the first arm region 370 is fitted into the third clamping region 330, whereby the antenna element portion (third antenna portion 35) is assembled to the holder (antenna board holder 33). In addition, the sliding movement of the antenna element portion (third antenna portion 35) is restricted by the third stopper 331 of the third clamping region 330. Therefore, alignment is easier than in a configuration in which the third clamping region 330 including the third stopper 331 is not provided.

[0109] (Effect of holding antenna pattern 36 on antenna substrate 37, etc.) The antenna board 37 on which the antenna pattern 36 is formed can be held by a holder (antenna board holder 33) via the third clamping region 330. This allows an operator to easily assemble the antenna board 37 on which the antenna pattern 36 is formed in an upright state without touching the antenna pattern 36.

[0110] (Fifth and Sixth Embodiments) In the fourth embodiment, an example has been described in which the third arm region 370 includes an upper end of the antenna substrate 37 extending upward in the z direction and a lower end of the antenna substrate 37 extending downward in the z direction, and the antenna substrate 37 is attached to the antenna substrate holder 33 from the front in the x direction. However, the shape of the antenna board 37, that is, the location where the third arm region 370 is provided and the direction in which the antenna board 37 is attached to the antenna board holder 33 are not limited to this (the example shown in FIGS. 21 to 23). For example, the third arm region 370 may include an upper end of the antenna substrate 37 extending forward in the x-direction, and a lower end of the antenna substrate 37 extending forward in the x-direction, and the antenna substrate 37 may be attached to the antenna substrate holder 33 from behind in the x-direction (fifth embodiment, see Figures 24 and 25). Furthermore, for example, the third arm region 370 may be an L-shaped region disposed above the upper end of the antenna substrate 37 in the z direction when viewed from the y direction, and the antenna substrate 37 may be attached to the antenna substrate holder 33 from the front in the x direction (sixth embodiment, see Figures 26 and 27).

[0111] (An example where the arm area and the gripping area are reversed) In the first to sixth embodiments, examples have been described in which arm regions (first arm region 170, second arm region 270, third arm region 370) are provided on the antenna element portion (first coil portion 15, second coil portion 25, third antenna portion 35), and clamping regions (first clamping region 130, second clamping region 230, third clamping region 330) are provided on the holder (first antenna holder 13, second antenna holder 23, antenna board holder 33). However, clamping regions may be provided on the antenna element portion, and arm regions may be provided on the holder.

[0112] (Application example of the fixed member of the antenna element) In the first to sixth embodiments, examples have been described in which the antenna element portion (first coil portion 15, second coil portion 25, third antenna portion 35) is fixed to the metal base 50 or the resin base 60. However, the antenna element portion may be fixed to the antenna case 5 or the substrate (first substrate 19, second substrate 29, third substrate 39).

[0113] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents described in the claims, as well as in the scope and spirit of the invention.

[0114] According to the present specification, the following aspects are provided. (Aspect 1) The vehicle-mounted antenna device includes an antenna element portion having an element, and a holder that holds the antenna element portion and is fixed to a fixed member in a first direction. The antenna element portion is attached to the holder from a second direction that intersects with the first direction. One of the antenna element portion and the holder is provided with an arm region that is used to attach the antenna element portion to the holder.

[0115] According to the first aspect, the fitting of the arm region makes alignment easy. Therefore, compared to a configuration in which the arm region is not provided on either the antenna element portion or the holder, it is easy to assemble one of the antenna element portion and the holder to the other of the antenna element portion and the holder, that is, it is easy to assemble the vehicle-mounted antenna device. Also, compared to a configuration in which the antenna element portion is attached to the holder from the first direction, when assembling the vehicle-mounted antenna device, the elements and the like are easily visible, making the assembly easier.

[0116] (Aspect 2) Preferably, the other of the antenna element portion and the holder is provided with a clamping region into which the arm region is fitted by sliding movement in the second direction. The antenna element portion is assembled to the holder via the arm region and the clamping region. The clamping region is provided with a stopper that comes into contact with the arm region.

[0117] According to the second aspect, the arm region is fitted into the clamping region by the sliding movement in the second direction, and the antenna element unit is assembled to the holder. The stopper in the clamping region limits the sliding movement of the antenna element unit. This makes alignment easier than in a configuration in which a clamping region including a stopper is not provided.

[0118] (Aspect 3) More preferably, after the antenna element portion is assembled to the holder via the arm region and the clamping region, the antenna element portion is fixed to the holder by screwing from the first direction.

[0119] According to the third aspect, the antenna element portion and the holder can be fixed more firmly than in a configuration in which the holder is only fitted together and no screws are used.

[0120] (Aspect 4) More preferably, the antenna element portion has an element holding portion for holding the element. The element holding portion has an arm portion. The arm portion is arranged so as to be at a different position in the first direction from the arm region. The antenna element portion is held by the holder via the arm region and the arm portion.

[0121] According to the fourth aspect, the antenna element portion is held by the holder more firmly than in a configuration in which no arm portion is used.

[0122] (Aspect 5) Preferably, the antenna element portion has a pattern and a substrate on which the pattern is formed. The holder is provided with a groove as the clamping region.

[0123] According to the fifth aspect, the substrate on which the antenna pattern is formed can be held by the holder via the clamping region, which allows an operator to easily assemble the substrate on which the antenna pattern is formed without touching the antenna pattern.

[0124] (Aspect 6) More preferably, the holder holds an antenna element separate from the element at a position higher than the element. The element is a coil electrically connected to the antenna element. The holder is provided with a groove as a clamping region.

[0125] According to the sixth aspect, it becomes possible to hold two antenna elements above and below the holder. [Explanation of symbols]

[0126] 1 Vehicle-mounted antenna device, 5 Antenna case, 7 Pad, 10 First antenna portion, 11 First capacitive loading element, 11a 11th element, 11a1 First connection point, 11a2 Mounting portion, 11a3 First mounting hole, 11b 12th element, 11b1 Notch, 13 First antenna holder, 13a Holding portion, 13a1 Upper holding area, 13a2 Lower holding area, 13b Right leg portion, 13b1 Second arm holding portion, 13c Left leg portion, 13c1 First arm holding portion, 13c2 First arm mounting hole, 130 First clamping area, 14a Slope portion, 14b Recess, 14c Upper surface portion, 14c1 Second mounting hole, 14d Right side portion, 14d1 Protrusion, 14e Left side portion, 14e1 Claw, 14f rear surface portion, 14f1 rib (first stopper), 15 first coil portion, 16 first coil element, 17 first coil holder, 17a first bobbin, 17b first arm portion, 17b1 second arm portion mounting hole, 17c first upper end portion, 17c1 third mounting hole, 17c2 recess, 17c3 latched portion, 170 first arm region, 18 first connecting fitting, 18a first tip portion, 19 first board, 19a first connecting portion, 20 second antenna portion, 21 second capacitive loading element, 21a second element, 21b second element, 22 second connecting point, 23 second antenna holder, 23a upper holder, 23b lower holder, 23b1 fourth mounting hole, 23c leg portion, 230 second clamping region, 231 second stopper, 25 second coil portion, 26 second coil element, 27 Second coil holder, 27a second bobbin, 27b second arm portion, 27c second upper end portion, 27c1 fifth mounting hole, 270 second arm region, 28 second connecting fitting, 28a second tip portion, 29 second board, 29a second connection portion, 33 antenna board holder, 330 third clamping region, 331 third stopper, 35 third antenna portion, 37 antenna board, 370 third arm region, 39 third board, 39a third connection portion, 31 screw, 50 metal base, 60 resin base, 70 waterproof seal, 80 mounting member, LX left-right center line of metal base and resin base, Pxz xz plane including center line LX

Claims

1. an antenna element portion having an element; a holder that holds the antenna element portion and is fixed to a fixed member in a first direction, The antenna element portion is attached to the holder from a second direction intersecting the first direction, one of the antenna element portion and the holder is provided with an arm region used for assembling the antenna element portion to the holder; The antenna element portion has an element holding portion that holds the element, The element holding portion has an arm portion, The arm portion is disposed so as to be at a different position in the first direction from the arm region, The antenna element portion is held by the holder via the arm region and the arm portion.

2. a clamping region into which the arm region is fitted by the sliding movement in the second direction is provided on the other of the antenna element portion and the holder; The antenna element portion is attached to the holder via the arm region and the clamping region, The vehicle-mounted antenna device according to claim 1 , wherein the clamping region is provided with a stopper that comes into contact with the arm region.

3. 3. The vehicle-mounted antenna device according to claim 2, wherein after the antenna element portion is assembled to the holder via the arm region and the clamping region, the antenna element portion is fixed to the holder by screwing from the first direction.

4. The antenna element portion has a conductor pattern and a substrate on which the conductor pattern is formed, The vehicle-mounted antenna device according to claim 2 , wherein the holder is provided with a groove as the clamping region.

Images