Mounting structure for in-vehicle antenna device

Abstract

Provided is a mounting structure for an in-vehicle antenna device. This mounting structure for an in-vehicle antenna device mounts, to the roof of a vehicle, an in-vehicle antenna device provided with an antenna main body and a radome, the in-vehicle antenna device comprising: a metal base part to which the antenna main body is mounted; and a resin roof to which the antenna cover is attached so as to cover the antenna body. The resin roof has an opening inside the outer peripheral portion of the radome, the opening allowing the base portion or the antenna main body to be inserted therethrough. The outer peripheral portion of the radome is joined to the resin roof at the periphery of the opening by an adhesive.

Description

Technical Field

[0001] The present disclosure relates to a mounting structure of a vehicle-mounted antenna device. Background Art

[0002] Conventionally, as a vehicle-mounted antenna device mounted on the roof of a vehicle, there is known a vehicle-mounted antenna device such as that described in Patent Document 1. Patent Document 1 discloses a vehicle-mounted antenna device, which includes an antenna base mounted on the roof of a vehicle body and including a metal base, and an antenna housing covering the antenna base. An annular sealing member is provided between the antenna base and the roof of the vehicle body. In this vehicle-mounted antenna device, water stopping is achieved mainly by a sealing member between the antenna base and the roof of the vehicle body, rather than between the outer peripheral portion of the antenna housing and the vehicle body.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2016-32166

[0004] However, in the case where the roof of the vehicle is constituted by a resin roof, the ground potential of the antenna body is required. Therefore, the following structure can be considered: a metal base portion is provided on the vehicle inner side of the resin roof, and the antenna body is arranged on the base portion in a manner protruding from an opening provided in the resin roof. In the case of this structure, the opening of the resin roof is located on the inner side of the outer periphery of the antenna shell. Therefore, if the waterproof structure of the above-mentioned prior art is directly applied, there is a possibility that water may enter the inner side of the outer periphery of the antenna shell along the resin roof and reach the opening of the resin roof.

[0005] Therefore, in order to ensure the waterproof function between the outer periphery of the radome and the resin roof, a waterproof structure can be considered in which a sealing member and a fastening member are used to fix the outer periphery of the radome to the resin roof via the sealing member. In this case, a constant space for accommodating the fastening member is required inside the outer periphery of the radome. Therefore, there is a problem that it is difficult to miniaturize the outer periphery of the radome and this becomes a limitation on the appearance design of the radome. Summary of the invention

[0006] An object of the present disclosure is to provide a mounting structure for a vehicle-mounted antenna device that can achieve miniaturization of the outer peripheral portion of a radome.

[0007] One method disclosed herein is a mounting structure for a vehicle-mounted antenna device that is provided with an antenna body and an antenna cover and is mounted on a roof of a vehicle. The mounting structure comprises: a metal base portion on which the antenna body is mounted; and a resin roof on which the antenna cover is mounted so as to cover the antenna body. In the mounting structure, the resin roof has an opening for inserting the base portion or the antenna body at a position inside the outer periphery of the antenna cover, and the outer periphery of the antenna cover is joined to the resin roof by an adhesive around the opening.

[0008] In one embodiment of the present invention, the outer periphery of the radome is bonded to the resin roof around the opening by an adhesive. By using the bonding formed by the adhesive, the function of fixing the outer periphery of the radome to the resin roof and the function of waterproofing between the outer periphery of the radome and the resin roof are achieved in a space-saving manner. As a result, for example, there is no need for a space inside the outer periphery of the radome for accommodating fastening components, and there is room for reducing the shape of the outer periphery of the radome. Therefore, according to the installation structure of the vehicle-mounted antenna device involved in one embodiment of the present invention, it is possible to miniaturize the outer periphery of the radome.

[0009] Alternatively, in one embodiment, the outer periphery of the radome is bonded to the resin roof by an adhesive all around the opening. In this case, the bonding formed by the adhesive achieves the fixing function of the outer periphery of the radome to the resin roof and the waterproofing function between the outer periphery of the radome and the resin roof all around the opening.

[0010] Alternatively, in one embodiment, a first protrusion is formed on the outer periphery of the radome and further inside the end edge of the radome, the first protrusion includes a bonding surface facing the surface of the resin roof, and an adhesive is disposed between the bonding surface and the resin roof. In this case, the adhesive is unlikely to overflow from the end edge of the radome, so that the vehicle-mounted antenna device is more beautiful and easier to install than, for example, a structure in which an adhesive is disposed between the end edge of the radome and the resin roof.

[0011] Alternatively, in one embodiment, the resin roof has a through hole, the through hole being provided between the bonding portion to the radome and the edge of the opening, a second protrusion being formed on the outer periphery of the radome and on the inner side of the end edge of the radome, and the second protrusion being inserted through the through hole and fixed by a fixing member extending in a direction intersecting the extending direction of the through hole. In this case, the vehicle-mounted antenna device can be more reliably mounted on the roof by the second protrusion and the fixing member.

[0012] Alternatively, in one embodiment, the resin roof has a snap-fitting edge formed at a portion of the edge of the opening, and the antenna cover has a third protrusion having a cross-sectional shape that snaps with the snap-fitting edge. In this case, the antenna cover can be positioned relative to the resin roof by snapping the third protrusion with the snap-fitting edge.

[0013] According to the present disclosure, it is possible to reduce the size of the outer peripheral portion of the radome. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic perspective view illustrating a part of a roof of a vehicle on which the vehicle-mounted antenna device is mounted.

[0015] Figure 2It is a schematic cross-sectional view of a mounting structure of a vehicle-mounted antenna device according to an embodiment.

[0016] Figure 3 is an example Figure 2 A cross-sectional view of a main part of a mounting structure of a vehicle-mounted antenna device.

[0017] Figure 4 It is along Figure 3 A cross-sectional view taken along line IV-IV.

[0018] Figure 5 yes Figure 3 An enlarged sectional view of the main parts of the front side.

[0019] Figure 6 yes Figure 3 An enlarged sectional view of the main part of the rear side.

[0020] Figure 7 (a) is a plan view for explaining the test method of the adhesive performance (shear). Figure 7 (b) is a side view for explaining the test method of the adhesive property (shear).

[0021] Figure 8 This is a diagram for explaining the test method of adhesive performance (peeling).

[0022] Fig. 9 This is a perspective view of a vehicle for explaining the range of the resin roof.

[0023] Fig.10 (a) is a schematic cross-sectional view of a mounting structure of a vehicle-mounted antenna device according to a first comparative example. Fig.10 (b) is a schematic cross-sectional view of a mounting structure of a vehicle-mounted antenna device according to a second comparative example. DETAILED DESCRIPTION

[0024] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in the drawings, the same or identical elements are denoted by the same reference numerals, and repeated descriptions are omitted.

[0025] Figure 1 It is a schematic perspective view illustrating a part of a roof of a vehicle on which the vehicle-mounted antenna device is mounted. Figure 2 This is a schematic cross-sectional view of a mounting structure of a vehicle-mounted antenna device according to an embodiment. In the following description, the front-rear direction of a vehicle is sometimes referred to as the "front-rear direction", the width direction of the vehicle is referred to as the "left-right direction", and the height direction of the vehicle is referred to as the "up-down direction". In each figure, the +X direction corresponds to the front of the vehicle, the +Y direction corresponds to the right, and the +Z direction corresponds to the top.

[0026] Figure 1 The vehicle-mounted antenna device 1 and a part of a vehicle 50 on which the vehicle-mounted antenna device 1 is mounted are shown. Figure 2 2 is a partial cross-sectional view illustrating the internal structure of the vehicle-mounted antenna device 1 as viewed from the left side. Figure 1 and Figure 2 As shown, the vehicle-mounted antenna device 1 is used by being mounted on the upper surface of a roof 51 of a vehicle 50 such as a passenger car. The vehicle-mounted antenna device mounting structure 10 is a mounting structure for mounting the vehicle-mounted antenna device 1 on the roof 51 of the vehicle.

[0027] The roof 51 of the vehicle 50 has a double-layer structure at least in the area where the vehicle-mounted antenna device 1 is installed. The roof 51 has a resin roof 52 and a base portion 53. The resin roof 52 is a resin roof panel of organic glass (plastic glazing) constituting the outermost part of the roof 51 of the vehicle 50. The resin roof 52 has polycarbonate as a main component, for example. Corresponding to the shape of the vehicle compartment of the vehicle 50, the resin roof 52 extends in the front-to-back direction and the left-to-right direction. The resin roof 52 is in the shape of a roughly rectangular plate. The range of the resin roof 52 of the roof 51 of the vehicle 50 is not particularly limited (described later). The resin roof 52 may be formed in two colors or in one color. The resin roof 52 may also be hard-coated to improve durability.

[0028] The base portion 53 is a metal panel that is formed in the portion of the roof 51 of the vehicle 50 that is closer to the vehicle interior (lower side) than the resin roof 52. The base portion 53 extends in the front-rear direction and the left-right direction in accordance with the shape of the resin roof 52. The base portion 53 is, for example, in the shape of a substantially rectangular plate that is smaller in area than the resin roof 52. The base portion 53 may be partially provided with a recess 53a (see FIG. 1 ) so as not to interfere with the member for mounting the vehicle-mounted antenna device 1. Figure 3 ).

[0029] The vehicle-mounted antenna device 1 includes an antenna body 2 mounted on a base 53 and an antenna cover 3 mounted on a resin roof 52. The antenna body 2 is a main part for antenna function, and is composed of an antenna substrate including, for example, a GNSS (Global Navigation Satellite System) antenna. The antenna body 2 has, for example, a fixing portion 2a protruding downward and inserted into a through hole 53b of the base 53. The antenna body 2 is fixed to the base 53 by fastening or embedding the fixing portion 2a in the base 53.

[0030] The radome 3 is mounted on the resin roof 52 in such a manner as to cover the antenna body 2. The radome 3 is formed of a resin having radio wave permeability. As the resin of the radome 3, for example, a polymer blend of polycarbonate / ABS resin (PC / ABS) can be used. As for the appearance of the radome 3, the width along the left-right direction gradually narrows as it moves upward from the roof 51, and the end becomes narrower as it moves toward the front. The shape of the vehicle-mounted antenna device 1 is also called a so-called shark fin antenna or a dolphin antenna. The radome 3 is mounted on the resin roof 52 at the outer peripheral portion 3a of the radome 3. Alternatively, the lower edge 3b of the outer peripheral portion 3a may be located at a position away from the surface of the resin roof 52 by a predetermined dimension.

[0031] The resin roof 52 has an opening 52a through which the antenna body 2 is inserted. When the vehicle-mounted antenna device 1 is arranged at a predetermined position on the roof 51, the opening 52a is provided on the inner side of the outer peripheral portion 3a of the antenna cover 3. The shape of the opening 52a is not particularly limited as long as the antenna body 2 can be inserted therethrough. The opening 52a here is, for example, a substantially rectangular shape that is slightly larger than the cross-sectional dimension of the antenna body 2 (see Figure 1 ).

[0032] Figure 3 is an example Figure 2 A cross-sectional view of a main part of a mounting structure of a vehicle-mounted antenna device. Figure 4 It is along Figure 3 A cross-sectional view taken along line IV-IV. Figure 5 yes Figure 3 An enlarged sectional view of the main parts of the front side. Figure 6 yes Figure 3 In the mounting structure 10 of the vehicle-mounted antenna device of the present embodiment, the outer peripheral portion 3a of the antenna cover 3 is bonded to the resin roof 52 around the opening 52a by the adhesive 4. From the viewpoint of adhesive performance and waterproof performance, the outer peripheral portion 3a of the antenna cover 3 may be bonded to the resin roof 52 by the adhesive all around the opening 52a.

[0033] In more detail, the first protrusion 3c is formed on the outer peripheral portion 3a of the antenna cover 3 and on the inner side of the end edge 3b of the antenna cover 3. The first protrusion is a protrusion for arranging (applying) the adhesive 4 at its end for bonding. Here, as an example, the first protrusion 3c is provided along the outer peripheral portion 3a of the antenna cover 3 over the entire circumference. The first protrusion 3c is provided, for example, at a position that is closer to the inner side (opening 52a side) with respect to the end edge 3b of the antenna cover 3 at a predetermined distance. The first protrusion 3c is, for example, a plate-shaped protrusion that can extend downward at this position with the inner surface of the antenna cover 3 as the base end.

[0034] The cross-sectional shape of the first protrusion 3c that intersects the circumferential direction of the outer peripheral portion 3a is not particularly limited, but can be, for example, rectangular. The cross-sectional shape of the first protrusion 3c can also be a trapezoidal shape that is inclined at the base end on the antenna cover 3 side. For example, the end of the first protrusion 3c (the end on the side opposite to the base end) becomes a bonding surface 3d facing the surface of the resin roof 52. The bonding surface 3d has, for example, a flat surface extending in the front, rear, left and right directions. The flat surface of the bonding surface 3d is approximately parallel to the surface of the resin roof 52. An adhesive 4 is arranged between the bonding surface 3d and the resin roof 52. Alternatively, the bonding surface 3d may be separated from the resin roof 52 at a predetermined distance in consideration of the adhesive strength of the adhesive when the adhesive 4 is not arranged.

[0035] Specifically, for example, two-component reactive polyurethane adhesive, two-component epoxy×modified silicone adhesive, or one-component modified silicone adhesive can be used as the adhesive 4. Two-component epoxy×modified silicone refers to, for example, a two-component mixed reactive epoxy modified silicone elastic adhesive.

[0036] The evaluation results of the adhesive properties of the adhesive 4 are shown in Table 1 below.

[0037] Table 1

[0038]

[0039]

[0040] Table 1 shows the evaluation results of the adhesive properties using the test pieces. Figure 7 (a) is a plan view for explaining the test method of the adhesive performance (shear). Figure 7 (b) is a side view for explaining the test method of the adhesive property (shear). Figure 8 This is a diagram for explaining the test method of adhesive performance (peeling). In the evaluation of "shear", at room temperature (e.g. 25°C), Figure 7 As shown in (a), the ends of the test pieces T1 and T2 made of PC / ABS resin or PC resin with hard coating are bonded to each other in a state where the test pieces T1 and T2 are parallel to each other. Figure 7 As shown in (b), the test pieces T1 and T2 were pulled in opposite directions along the extension direction to evaluate the adhesive performance. Figure 8 As shown in the figure, one end of the canvas T4 is folded back at the end of the test piece T3 made of PC / ABS resin or PC resin with a hard coating to bond the canvas T4. After a predetermined time or more, the canvas T4 is pulled in the direction indicated by the arrow relative to the test piece T3 to peel off the canvas T4, and the bonding performance is evaluated.

[0041] The bonding performance of Adhesive 4 is shown in the "Bonding Performance" of Table 1. Except for the "shear" of two-component epoxy × modified silicone, any adhesive used has a particularly excellent bonding strength (equivalent to a double circle). For the "shear" of two-component epoxy × modified silicone, although it is weaker than the results under other test conditions, it also exhibits excellent bonding strength (equivalent to a single circle). On the other hand, the water-stopping performance of Adhesive 4 is shown in the "water-stopping performance" of Table 1. By bonding the outer periphery of the antenna cover and the resin roof with the adhesive, the outer periphery of the antenna cover and the resin roof are sealed, so any adhesive used has a particularly excellent water-stopping performance (equivalent to a double circle).

[0042] However, the first protrusion may be formed integrally with a protrusion having another function. For example, the first protrusion 5a may be formed integrally with the third protrusion 5 formed on the radome 3 on the rear side of the vehicle.

[0043] The third protrusion 5 is a protrusion for positioning the antenna cover 3. The third protrusion 5 here positions the antenna cover 3 in the left-right direction at the rear side of the vehicle. The third protrusion 5 is provided, for example, at a position that is a predetermined distance inward (on the side of the opening 52a) from the edge 3b at the rear of the outer peripheral portion 3a of the antenna cover 3. The third protrusion 5 is formed to extend downward at this position, for example, with the inner surface of the antenna cover 3 as the base end and bend in a crank shape. In such a third protrusion 5, the portion from the base end of the inner surface of the antenna cover 3 to the portion that is bent in a crank shape functions as the first protrusion 5a. On the base end side of the third protrusion 5, the first protrusion 5a is connected to the first protrusion 3c of the portion other than the rear end portion and is formed integrally.

[0044] The third protrusion 5 is engaged with the engagement edge 52b formed at a part of the edge of the opening 52a of the resin roof 52, thereby positioning the antenna cover 3 in the left-right direction. For example, when viewed from above, the engagement edge 52b can be a rectangular (e.g., rectangular) notch provided at the rearmost part of the opening 52a of the resin roof 52. The cross-sectional shape of the third protrusion 5 is not particularly limited as long as it can be engaged with the engagement edge 52b, but it can also be the same as the notch shape of the engagement edge 52b, that is, a rectangular shape.

[0045] As the bonding surface 5b of the first protrusion 5a, a flat surface formed by the crank-shaped bent portion of the third protrusion 5 may be used. The bonding surface 5b is, for example, a flat surface extending in the front-rear and left-right directions by bending the third protrusion 5 at a substantially right angle and facing the resin roof 52. The adhesive 4 is disposed between the bonding surface 5b and the resin roof 52. The bonding surface 5b may be separated from the resin roof 52 by a predetermined distance in consideration of the adhesive strength of the adhesive in a state where the adhesive 4 is not disposed.

[0046] In addition, the second protrusion 6 may be formed on the outer peripheral portion 3a of the radome 3 and further inside than the end edge 3b of the radome 3. The second protrusion 6 is a protrusion for restricting the upward movement of the radome 3. The second protrusion 6 is provided, for example, on the front side of the radome 3. The second protrusion 6 is inserted, for example, through the through hole 52c provided in the resin roof 52 between the bonded portion bonded to the radome 3 and the edge of the opening 52a. The second protrusion 6 is fixed by the fixing member 7 in a state of being inserted in the through hole 52c. A groove for inserting the fixing member 7 at a predetermined position is formed on the second protrusion 6, for example, in a manner intersecting with the extending direction of the through hole 52c. The groove is formed on the lower side of the resin roof 52 in a state where the second protrusion 6 is inserted into the through hole 52c from the upper side of the resin roof 52. By inserting the fixing member 7 in the groove, the fixing member 7 is in a state of extending in a direction intersecting with the extending direction of the through hole 52c. The second protrusion 6 is prevented from being disengaged from the through hole 52c, and the upward movement of the antenna cover 3 is restricted. The fixing member 7 may be, for example, a plate-shaped, U-shaped clamping metal member. The fixing member 7 may also be a C ring or an E ring. The fixing member 7 may also be a fixing pin (such as a cotter pin, etc.), in which case, instead of the above-mentioned groove, a pin insertion hole may be formed on the second protrusion 6 in a manner intersecting with the extending direction of the through hole 52c.

[0047] Alternatively, an elastic member (eg, a rubber member) may be interposed between the end edge 3 b of the radome 3 and the resin roof 52 to block a gap between the end edge 3 b of the radome 3 and the resin roof 52 .

[0048] In addition, the range of the resin roof 52 in the roof 51 of the vehicle 50 can be made Figure 1 The portion shown is included in any range of the front portion of the rear window. Fig. 9 1 is a perspective view of a vehicle for explaining the range of the resin roof. Fig. 9As shown, the range of the resin roof 52 may be only the area PG1 of the rear end portion of the roof 51 in a manner corresponding to the upper portion of the rear seat of the vehicle 50. The range of the resin roof 52 may also be the area of ​​the entire roof 51 obtained by adding the area PG1 and the area PG2 in a manner covering the entire cabin of the vehicle 50. When a resin rear window PG3 is integrally formed in the resin roof 52, the range of the resin roof 52 may also be the area obtained by adding the area PG1 and the area PG3. When a resin rear window PG3 is integrally formed in the resin roof 52, the range of the resin roof 52 may also be the area obtained by adding the areas PG1, PG2, and the area PG3. Alternatively, when the resin roof 52 is two-color molded, a transparent portion PG4 may be set in the area PG2.

[0049] The effects of the mounting structure 10 for the vehicle-mounted antenna device configured as described above will be described. Fig.10 (a) is a schematic cross-sectional view of a mounting structure of a vehicle-mounted antenna device according to a first comparative example. Fig.10 (b) is a schematic cross-sectional view of the mounting structure of the vehicle-mounted antenna device involved in the second comparative example. In the structure of the first comparative example, the roof 151 is not made of resin but is made of existing metal, and no gap such as the above-mentioned opening 52a is provided. In this case, the sealing member 104 sandwiched between the antenna body 102 and the roof 151 plays a major waterproofing function, and therefore, the waterproofing function at the outer periphery of the antenna cover 103 is not necessary. In the structure of the second comparative example, the roof includes a resin roof 152 and a base portion 153, and a gap 152a such as the above-mentioned opening 52a is provided. Therefore, if the outer periphery of the antenna cover 103 is arranged on the inner side (the antenna body 102 side) than the gap 152a, there is a fear that water may enter the gap 152a. Therefore, it is necessary to arrange the outer periphery of the antenna cover 103 on the outer side than the gap 152a. However, even if the outer periphery of the antenna cover 103 is arranged on the outer side than the gap 152a, if Fig.10 If the structure that performs the main water-stopping function is only the sealing member 104 as in (b), water may still enter between the antenna cover 103 and the resin roof 152. Therefore, in the case where a gap 152a such as the above-mentioned opening 52a is provided, a water-stopping function between the antenna cover 103 and the resin roof 152 is required around the gap 152a such as the above-mentioned opening 52a (on the outside of the gap 152a).

[0050] Therefore, in order to ensure the waterproof function between the outer periphery of the radome and the resin roof, a waterproof structure is considered in which a sealing member and a fastening member are used to fix the outer periphery of the radome to the resin roof via the sealing member. Figure 4In FIG. 1 , as a comparative example, a waterproof structure in which the outer periphery of the antenna cover is fixed to the resin roof 52 using a fastening member 105 is shown by a two-dot chain line. Figure 4 In the case of the structure of the comparative example, a predetermined space is required inside the outer periphery of the antenna cover for accommodating the fastening member 105. That is, in order to provide this space, the outer periphery of the antenna cover of the comparative example has a thickness greater than the protruding height of the fastening member 105 upward. The outer periphery of the antenna cover of the comparative example has a shape that expands outwards significantly more than the width occupied by the fastening member 105 in the front-rear, left-right directions (for example, the size of the embedded nut, etc.). Moreover, from the viewpoint of also suppressing the ingress of water into the fastening portion, a sealing member is arranged on the outside of the fastening member 105, so that the outer periphery of the antenna cover of the comparative example is easy to expand outwards. In this way, if it is difficult to miniaturize the outer periphery of the antenna cover, it will limit the appearance design of the antenna cover.

[0051] In this regard, according to the mounting structure 10 of the vehicle-mounted antenna device, the outer peripheral portion 3a of the antenna cover 3 is bonded to the resin roof 52. Therefore, the entry of water to the inner side (the antenna body 2 side) than the outer peripheral portion 3a of the antenna cover 3 is suppressed. As a result, it is possible to prevent water from entering the gap between the resin roof 52 and the base portion 53 at the opening 52a. In this way, by utilizing the bonding of the adhesive 4, the fixing function of the outer peripheral portion 3a of the antenna cover 3 to the resin roof 52 and the waterproofing function between the outer peripheral portion 3a of the antenna cover 3 and the resin roof 52 are achieved in a space-saving manner. As a result, there is no need for Figure 4 As shown in the double-dashed line, there is a space for accommodating the fastening member 105 inside the outer periphery of the antenna cover. As a result, there is room for reducing the shape of the outer periphery of the antenna cover. Therefore, according to the mounting structure 10 of the vehicle-mounted antenna device, the outer periphery 3a of the antenna cover 3 can be miniaturized.

[0052] According to the mounting structure 10 for the vehicle-mounted antenna device, the outer peripheral portion 3a of the antenna cover 3 is bonded to the resin roof 52 all around the opening 52a by the adhesive 4. Thus, the outer peripheral portion 3a of the antenna cover 3 has a fixing function to the resin roof 52 and a waterproofing function between the outer peripheral portion 3a of the antenna cover 3 and the resin roof 52 all around the opening 52a.

[0053] According to the mounting structure 10 of the vehicle-mounted antenna device, the first protrusion 3c is formed on the outer peripheral portion 3a of the antenna cover 3 and on the inner side of the end edge 3b of the antenna cover 3. The first protrusion 3c includes a bonding surface 3d facing the surface of the resin roof 52. The adhesive 4 is arranged between the bonding surface 3d and the resin roof 52. As a result, the adhesive 4 is not easy to overflow from the end edge 3b of the antenna cover 3. Therefore, compared with a structure in which the adhesive 4 is arranged between the end edge 3b of the antenna cover 3 and the resin roof 52, the vehicle-mounted antenna device 1 is beautiful and easy to install.

[0054] According to the mounting structure 10 of the vehicle-mounted antenna device, the resin roof 52 has a through hole 52c provided between the bonding portion to the antenna cover 3 and the edge of the opening 52a. The second protrusion 6 is formed on the outer peripheral portion 3a of the antenna cover 3 and on the inner side of the end edge 3b of the antenna cover 3. The second protrusion 6 is fixed by the fixing member 7 extending in a direction intersecting the extending direction of the through hole 52c while being inserted into the through hole 52c. Thus, the vehicle-mounted antenna device 1 can be more reliably mounted on the roof 51 by the second protrusion 6 and the fixing member 7.

[0055] According to the mounting structure 10 for the vehicle-mounted antenna device, the resin roof 52 has an engaging edge 52b formed at a part of the edge of the opening 52a. The antenna cover 3 has a third protrusion 5 having a cross-sectional shape that engages with the engaging edge 52b. By engaging the third protrusion 5 with the engaging edge 52b, the antenna cover 3 can be positioned relative to the resin roof 52.

[0056] In addition, according to the mounting structure 10 of the vehicle-mounted antenna device, the fastening member 105 is not required, so the increase in the number of parts can be suppressed, compared with the mounting structure using the fastening member 105. Compared with the mounting structure using the fastening member 105, the complexity of the management of the fastening member 105 during assembly and the increase in the cost corresponding to the fastening member 105 can be suppressed.

[0057] [Modifications]

[0058] As mentioned above, although the embodiment related to this disclosure was described, this disclosure is not limited to the above-mentioned embodiment.

[0059] In the above embodiment, the outer peripheral portion 3a of the antenna cover 3 is bonded to the resin roof 52 by the adhesive 4 all around the opening 52a, but the present invention is not limited to this example. As long as the predetermined bonding performance can be ensured, a member other than the adhesive 4 (e.g., an elastic member such as rubber or sponge) may be sandwiched between the outer peripheral portion 3a of the antenna cover 3 and the resin roof 52 in a part of the outer peripheral portion 3a of the antenna cover 3 to achieve water stopping.

[0060] In the above embodiment, the first protrusion 5a is formed integrally with the third protrusion 5, but they may be separate and independent. In addition, the first protrusion 3c on the vehicle front side is separate and independent from the second protrusion 6, but they may be formed integrally with the second protrusion 6.

[0061] In the above embodiment, the outer peripheral portion 3a of the antenna cover 3 is bonded to the resin roof 52 via the bonding surfaces 3d and 5b of the first protrusions 3c and 5a, but the present invention is not limited to this example. For example, the edge 3b of the outer peripheral portion 3a of the antenna cover 3 may be directly bonded to the resin roof 52.

[0062] In the above-described embodiment, both the second protrusions 6 and the third protrusions 5 are provided, but at least one of the second protrusions 6 and the third protrusions 5 may be omitted.

[0063] In the above embodiment, the antenna body 2 is inserted through the opening 52a of the resin roof 52, but the present invention is not limited to this example. For example, the base portion 53 may be inserted through the opening 52a. In other words, the base portion 53 may be in a shape that protrudes upward from the resin roof 52 on the inner side of the opening 52a (for example, a panel shape that is bent in a trapezoidal shape when viewed in cross section).

[0064] At least a part of the above-described embodiment and various modifications may be arbitrarily combined.

[0065] In addition, constituent elements of one embodiment of the present disclosure will be described below.

[0066] [1] A mounting structure for a vehicle-mounted antenna device, wherein the vehicle-mounted antenna device including an antenna body and an antenna cover is mounted on a roof of a vehicle, the mounting structure for the vehicle-mounted antenna device comprising: a metal base portion on which the antenna body is mounted; and a resin roof on which the antenna cover is mounted so as to cover the antenna body, the resin roof having an opening for inserting the base portion or the antenna body at a position inside the outer periphery of the antenna cover, the outer periphery of the antenna cover being bonded to the resin roof at four sides of the opening by an adhesive.

[0067] [2] In the mounting structure of the vehicle-mounted antenna device described in [1], the outer peripheral portion of the antenna cover is bonded to the resin roof by an adhesive over the entire periphery of the opening.

[0068] [3] In the installation structure of the vehicle-mounted antenna device described in [1] or [2], a first protrusion is formed on the outer periphery of the above-mentioned antenna cover and on the inner side of the end edge of the above-mentioned antenna cover, and the above-mentioned first protrusion includes a bonding surface facing the surface of the above-mentioned resin roof, and an adhesive is arranged between the above-mentioned bonding surface and the above-mentioned resin roof.

[0069] [4] In the installation structure of the vehicle-mounted antenna device described in any one of [1] to [3], the resin roof has a through hole, the through hole is provided between the bonding portion to the antenna cover and the edge of the opening, a second protrusion is formed on the outer periphery of the antenna cover and on the inner side of the end edge of the antenna cover, and the second protrusion is fixed by a fixing member extending in a direction intersecting the extension direction of the through hole when inserted into the through hole.

[0070] [5] In the mounting structure of the vehicle-mounted antenna device described in any one of [1] to [4], the resin roof has a locking edge portion formed partially at the edge of the opening, and the antenna cover has a third protrusion having a cross-sectional shape that locks with the locking edge portion.

[0071] Description of Reference Numerals

[0072] 1...vehicle-mounted antenna device; 3...radome; 3a...peripheral portion; 3b...end edge; 3c, 5a...first protrusion; 3d, 5b...joining surface; 4...adhesive; 5...third protrusion; 6...second protrusion; 7...fixing member; 10...mounting structure of vehicle-mounted antenna device; 50...vehicle; 51...roof; 52...resin roof; 52a...opening; 52b...engaging edge; 52c, 53b...through hole; 53...base portion.

Claims

1. A mounting structure for a vehicle-mounted antenna device, wherein the vehicle-mounted antenna device including an antenna body and a radome is mounted on a roof of a vehicle, The mounting structure of the vehicle-mounted antenna device is characterized by comprising: a metal base portion on which the antenna body is mounted; and a resin roof on which the radome is mounted in a manner covering the antenna body, The resin roof has an opening for inserting the base or the antenna body at an inner side of the outer peripheral portion of the radome, The outer peripheral portion of the radome is bonded to the resin roof by an adhesive at the periphery of the opening.

2. The mounting structure of the vehicle-mounted antenna device according to claim 1, characterized in that: The outer peripheral portion of the radome is bonded to the resin roof by an adhesive over the entire periphery of the opening.

3. The mounting structure of the vehicle-mounted antenna device according to claim 1 or 2, characterized in that: A first protrusion is formed on the outer periphery of the radome and on the inner side of the end edge of the radome, The first protrusion includes a bonding surface facing the surface of the resin roof, An adhesive is disposed between the joining surface and the resin roof.

4. The mounting structure of the vehicle-mounted antenna device according to any one of claims 1 to 3, characterized in that: The resin roof has a through hole, and the through hole is provided between a bonding portion bonded to the radome and an edge of the opening, A second protrusion is formed on the outer periphery of the radome and on the inner side of the end edge of the radome, The second protrusion is fixed by a fixing member extending in a direction intersecting with an extending direction of the through hole in a state where the second protrusion is inserted into the through hole.

5. The mounting structure of the vehicle-mounted antenna device according to any one of claims 1 to 4, characterized in that: The resin roof has an engaging edge portion formed at a portion of an edge of the opening. The antenna cover has a third protrusion having a cross-sectional shape that engages with the engaging edge portion.

Images