Radar device and support structure for radar device

Abstract

The invention provides a radar device and a supporting structure of the radar device, which can suppress thermal creep of a supporting component of the radar device mounted on a vehicle. The housing (30) houses the radar body (20). The housing (30) includes a box portion (40) and a bracket (50). The housing part (40) accommodates the radar main body (20). The bracket (50) protrudes from the box body part (40) and is fastened to the front bumper (100) or the vehicle logo plate (120). The bracket (50) is disposed at a position shifted in the thickness direction of the radar body (20) with respect to the center of gravity (G) of the radar body (20). The bracket (50) is provided with a fastening piece (55) and a first rib (51). The surface of the fastening piece (55) facing the front bumper (100) or the logo plate (120) faces the same direction as the radiating surface of the radar body (20). The fastening piece (55) is provided with an insertion hole (56). The first rib (51) is erected on the fastening piece (55). The first rib (51) extends from the case portion (40) to an end portion of the fastening piece (55).

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of Japanese Patent Application No. 2024 - 1949 filed on January 10, 2024, and the entire contents of this application, including the specification, claims, drawings, and abstract, are incorporated herein by reference. Technical field

[0003] This specification discloses a radar device and a supporting structure for the radar device. Background art

[0004] For example, in Japanese Unexamined Patent Application Publication No. 2022 - 136378, a millimeter - wave radar is arranged on the front surface of a vehicle. The radar is housed in a housing. A bracket is protrudingly provided from the side surface of the housing. A fastening hole is formed through the bracket. The bracket is fastened to, for example, a front bumper.

[0005] In addition, in Japanese Unexamined Patent Application Publication No. 2015 - 140029, a millimeter - wave radar is also arranged on the front surface of a vehicle. The radar is housed in a housing. A plate - like mounting portion is protrudingly provided from the side surface of the housing. A hole is formed through the mounting portion, and the mounting portion is fastened to a front grille or the like through this hole. The root portion of the mounting portion is thinner than the front - end portion. In the event of a frontal collision of the vehicle, the root portion of the mounting portion breaks. As a result, the housing moves downward (recedes). In addition, a reinforcing rib is provided at the root portion of the mounting portion. By providing the rib at the root portion, the housing is firmly supported during normal driving. The rib is only formed at the root portion of the mounting portion. That is, the terminal position of the rib becomes the break point. In other words, the break position is managed by the rib.

[0006] For example, a heat source such as a drive source is arranged in front of the vehicle. Along with this, the periphery of the millimeter - wave radar also becomes high - temperature. When the bracket is formed of resin, thermal creep occurs in the bracket at high temperature. If the bracket deforms due to thermal creep, the radiation surface of the millimeter - wave radar is inclined. Therefore, it is necessary to adjust the millimeter - wave radar in the horizontal and vertical directions (also referred to as aiming).

[0007] Therefore, in this specification, a radar device and a supporting structure for the radar device that can suppress thermal creep of the supporting member are disclosed. Summary of the invention

[0008] The radar device disclosed in this specification includes a radar main body and a housing. The radar main body has a radiation surface. The housing houses the radar main body. The housing includes a box portion and a bracket. The box portion houses the radar main body. The bracket protrudes from the box portion and is fastened to a bumper or a vehicle logo plate. The bracket is made of a resin material. In addition, the bracket is disposed at a position offset in the thickness direction of the radar main body with respect to the center of gravity of the radar main body. Moreover, the bracket has a fastening piece and ribs. The opposing surface of the fastening piece that faces the bumper or the vehicle logo plate faces the same direction as the radiation surface. Moreover, insertion through-holes are formed at the ends of the fastening piece. The ribs are erected on the fastening piece. The ribs include first ribs. The first ribs extend from the box portion to the ends of the fastening piece.

[0009] The bracket is disposed at a position offset in the thickness direction of the radar main body with respect to the center of gravity of the radar main body, thereby generating a moment that causes the radiation surface to tilt. Along with this, a bending moment that tends to bend into an arc shape is input to the fastening piece. At this time, due to the compressive rigidity and tensile rigidity of the first ribs erected along the entire length of the fastening piece, bending deformation is suppressed along the entire length of the fastening piece.

[0010] In addition, in the above structure, the ribs may include second ribs orthogonal to the first ribs.

[0011] By generating a moment that causes the radiation surface to tilt, a torsional moment (torque) is generated in the bracket. Torsion is suppressed by the second ribs that are orthogonal to the first ribs, that is, extend in the width direction of the fastening piece.

[0012] In addition, in the above structure, the first ribs and the second ribs may be disposed on the opposing surface of the fastening piece. In this case, a guide cylinder is formed by a pair of first ribs and a pair of second ribs.

[0013] According to the above structure, when there are guiding protrusions on the bumper or the vehicle logo, positioning and temporary fixing of the radar device using the guide cylinder can be performed.

[0014] In addition, a support structure of the radar device is disclosed in this specification. The support structure includes the radar device described above and a bumper or a vehicle logo plate to which the radar device is fastened. The guide cylinder surrounds the insertion through-holes. The bumper or the vehicle logo plate has an insertion cylinder that is inserted into the guide cylinder.

[0015] The insertion cylinder is inserted through the guide cylinder. Thereby, the radar device is temporarily fixed to the bumper or the vehicle logo. In this state, by screwing a screw into the insertion through-hole of the guide cylinder, the radar device is fastened to the bumper or the vehicle logo. And even when so-called non-rotational loosening occurs in the fastening portion due to thermal creep, relative displacement between the radar device and the bumper or the vehicle logo can be suppressed by the surrounding structure in which the guide cylinder covers the insertion cylinder.

[0016] In addition, in this specification, a support structure for a radar device is disclosed. The support structure includes the radar device described above and a bumper or a vehicle logo board to which the radar device is fastened. A guide tube surrounds an insertion hole. The bumper or the vehicle logo board has a recessed portion into which the guide tube is inserted. A fastening hole aligned with the axis of the insertion hole is formed in the bottom of the recessed portion.

[0017] According to the above structure, by inserting the guide tube into the recessed portion, the radar device is temporarily fixed to the bumper or the vehicle logo. In this state, a screw is inserted through the insertion hole of the guide tube, and then the screw is screwed into the fastening hole, thereby fastening the radar device to the bumper or the vehicle logo. In addition, even when so-called non-rotational loosening occurs in the fastening portion due to thermal creep, the relative displacement between the radar device and the bumper or the vehicle logo can be suppressed by the surrounding structure of the guide tube covered by the recessed portion.

[0018] In addition, in the above structure, it is possible that the radar device is fastened to the bumper or the vehicle logo board with the radiation surface facing the horizontal direction. In this case, a plurality of brackets are provided above the box portion.

[0019] By providing a plurality of brackets at positions far from the center of gravity of the radar device, that is, at positions where the moment is relatively large, the generated moment is dispersed to each bracket.

[0020] In addition, in the above structure, it is possible that the opposing surface of the fastening piece is farther from the radiation surface than the back surface of the box portion.

[0021] By making the fastening piece farther from the radiation surface than the back surface of the box portion, even when the radiation surface is exposed on the front surface of the vehicle, the exposure of the fastening point to the outside of the vehicle can be avoided.

[0022] According to the radar device and the support structure of the radar device disclosed in this specification, thermal creep of the support member can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded perspective view of the radar device of the first embodiment and the bumper to which the radar device is fastened.

[0024] Figure 2 is a perspective view showing the structure on the radiation surface side of the radar device of the first embodiment.

[0025] Figure 3 is a perspective view showing the structure on the back side of the radar device of the first embodiment.

[0026] Figure 4 is a perspective view for explaining the load input to the bracket.

[0027] Figure 5Is an exploded perspective view of the radar device of the first embodiment and the license plate board to which the radar device is fastened.

[0028] Figure 6 Is an exploded perspective view of the radar device of the second embodiment and the bumper to which the radar device is fastened.

[0029] Figure 7 Is a perspective view of the structure on the radiation surface side of the radar device of the second embodiment.

[0030] Figure 8 Is a perspective view of the structure on the back side of the radar device of the second embodiment.

[0031] Figure 9 Is a perspective view for explaining the process (1 / 2) of fastening the radar device of the second embodiment to the bumper.

[0032] Figure 10 Is an illustration of Figure 9 The A-A cross-sectional view.

[0033] Figure 11 Is a perspective view for explaining the process (2 / 2) of fastening the radar device of the second embodiment to the bumper.

[0034] Figure 12 Is an illustration of Figure 11 The B-B cross-sectional view.

[0035] Figure 13 Is an exploded perspective view of the radar device of the second embodiment and the license plate board to which the radar device is fastened.

[0036] Figure 14 Is an illustration of the cross-section at the same position when the radar device of the second embodiment is fastened to the license plate board and Figure 12 The same position.

[0037] Figure 15 Is an exploded perspective view of the radar device of the third embodiment and the bumper to which the radar device is fastened.

[0038] Figure 16 Is a perspective view of the structure on the radiation surface side of the radar device of the third embodiment.

[0039] Figure 17 Is an exploded perspective view of the radar device of the third embodiment and the license plate board to which the radar device is fastened. Specific embodiments

[0040] Hereinafter, a radar device and a support structure for the radar device will be described with reference to the drawings. The shapes, materials, numbers, and numerical values described below are illustrative examples for explanation. These shapes and the like can be appropriately changed according to the specifications of the radar device and the support structure for the radar device. In addition, the same reference numerals are assigned to the same elements in all the drawings below.

[0041] In addition, in Figures 1 to 17 the vehicle front-rear direction is represented by the FR axis. The vehicle width direction is represented by the RW axis. And the vehicle height direction is represented by the UP axis. The FR axis, RW axis, and UP axis are orthogonal to each other. The front of the FR axis is the positive direction. The right of the RW axis is the positive direction. The upper of the UP axis is the positive direction.

[0042] 1. Overall Structure (Structure Common to the First, Second, and Third Embodiments)

[0043] Figure 1 the radar device 10 of the present embodiment is disclosed. And in Figure 1 the front bumper 100 to which the radar device 10 is fastened is illustrated. In this specification, the support structure of the radar device is constituted by the radar device 10 and the front bumper 100 or the vehicle logo plate 120 (refer to Figure 5 ).

[0044] The front bumper 100 is a buffer member disposed on the front surface of the vehicle. The front bumper 100 is formed of, for example, a resin material. For example, the front bumper 100 is a divided body, and the front bumper 100 divided into a plurality of components is mounted on the front surface of the vehicle. For example, in the example of Figure 1 the front bumper is fastened and connected to the peripheral components by clips. In addition to being fastened by clips, the front bumper 100 can also be fastened to the peripheral components by bolt fixing.

[0045] The front bumper 100 is provided with a frame 106. The frame 106 is a thick-walled frame for mounting the radar device 10. The frame 106 is, for example, rectangular. A rectangular opening 108 is formed at the center of the frame 106. The opening 108 has a shape along the outer shape of the box portion 40 of the radar device 10. For example, the front surface 40A of the box portion 40 (refer to Figure 2 ) is exposed to the outside of the vehicle from the opening 108.

[0046] Fastening holes 110 are provided through the frame 106. For example, the fastening holes 110 are provided through the back surface of the frame 106. In addition, the back surface of the frame 106 refers to the surface facing the inside of the vehicle. For example, the fastening holes 110 are provided on both sides of the opening 108. As will be described later, the insertion holes 56 of the bracket 50 of the radar device 10 are axially aligned with the fastening holes 110. A screw 90 is screwed into the fastening hole 110. The screw 90 is a so-called self-tapping screw type screw. During the process of screwing the screw 90 into the fastening hole 110, the inner peripheral surface of the fastening hole 110 is thread-cut (machined).

[0047] In addition, in Figure 1 the front bumper 100 is illustrated as a fastening member of the radar device 10, but the radar device 10 can also be fastened to the rear bumper. Similar to the front bumper 100, a frame 106 is also provided on the rear bumper. The radar device 10 is fastened to this frame 106.

[0048] Referring to Figure 5 the vehicle logo plate 120 is supported by the front grille 140, for example. The vehicle logo plate 120 is arranged at the center in the vehicle width direction on the front surface of the vehicle. For example, the vehicle logo plate 120 is formed of a resin material.

[0049] The vehicle logo plate 120 has an appearance surface 120A exposed to the outside (refer to Figure 14 ). A recess 128 is formed at the center of the back surface of the vehicle logo plate 120. In addition, the back surface of the vehicle logo plate 120 is the surface opposite to the design surface 120A. A front wall 121 is provided at the bottom of the recess 128. The recess 128 is rectangular and allows at least the front surface 40A of the radar device 10 to be inserted. In addition, for example, a predetermined gap is provided between the front surface 40A of the radar device 10 and the bottom surface of the recess 128.

[0050] Fastening holes 130 are provided through the back surface of the vehicle logo plate 120. For example, the fastening holes 130 are provided on both sides of the recess 128. As will be described later, the insertion holes 56 of the bracket 50 of the radar device 10 are axially aligned with the fastening holes 130. Similar to the fastening holes 110 of the front bumper 100, the screw 90 is screwed into the fastening hole 130. During this screwing process, the inner peripheral surface of the fastening hole 130 is thread-cut (machined).

[0051] Referring to Figure 2 and Figure 3 the radar device 10 is a device having a substantially rectangular parallelepiped shape. The radar device 10 includes a radar main body 20 and a housing 30. The radar main body 20 includes a radar antenna and a circuit board. The surface on which the radar antenna is arranged is a radiation surface 22. In addition, a millimeter-wave oscillator is mounted on the circuit board. That is, the radar device 10 is a millimeter-wave radar device. In addition, for example, the radar main body 20 has a horizontally long shape in which the dimension in the width direction (RW direction) is larger than the dimension in the height direction (UP axis direction).

[0052] The radar main body 20 is housed in the housing 30. The housing 30 is, for example, a molded part made of a resin material. The housing 30 includes a box part 40 and a bracket 50. The box part 40 houses the radar main body 20. In addition, the box part 40 is open at the back, for example, and is closed by a cover 42. For example, as Figure 12 shown, the cover 42 is fastened to the box part 40 by screws 46. A connector 44 is provided on the cover 42. Data related to the electromagnetic wave (reflected wave) received by the radar main body 20 is transmitted to the in-vehicle ECU (electronic control unit) via the connector 44.

[0053] Refer to Figure 2 , Figure 3 , the bracket 50 protrudes from the box part 40. The bracket 50 is a fastening part fastened to the front bumper 100 or the vehicle logo plate 120 (refer to Figure 5 ). For example, the bracket 50 extends from both side surfaces of the box part 40 in the vehicle width direction.

[0054] For example, in the following first to third embodiments, a plurality of brackets 50 are provided in the radar device 10. For example, the radar device 10 includes three brackets 50. That is, the radar device 10 is supported on the front bumper 100 or the vehicle logo plate 120 by three-point support.

[0055] A plurality of brackets 50 are provided in the upper part of the box part 40. For example, in the upper part of the box part 40, the brackets 50 protrude from both side surfaces in the vehicle width direction. For example, the brackets 50 protrude in the vehicle width direction from the upper ends of the side surfaces of the box part 40. In addition, in the lower part of the box part 40, a bracket 50 protrudes from one side surface in the vehicle width direction. For example, the bracket 50 protrudes in the vehicle width direction from the lower end of the side surface of the box part 40.

[0056] The bracket 50 includes a fastening piece 55. The fastening piece 55 protrudes and contacts along the width direction (RW axis direction) from the side surface of the box part 40. In addition, the fastening piece 55 is a flat piece, and the opposing surface 55B1 opposing the front bumper 100 (refer to Figure 1 ) or the vehicle logo plate 120 (refer to Figure 5 ) faces the same direction as the radiation surface 22. Insertion through holes 56 are formed in the vehicle width direction ends of the fastening piece 55 in the thickness direction. The insertion through holes 56 are axially aligned with the fastening holes 110 of the front bumper 100 or the fastening holes 130 of the vehicle logo plate 120 (refer to Figure 5 ).

[0057] Refer to Figure 2, the radiation surface 22 is fastened to the front bumper 100 or the emblem plate 120 in a manner facing the horizontal direction. The bracket 50 is disposed at a position offset in the thickness direction (FR axis direction) of the radar main body 20 with respect to the center of gravity G of the radar main body 20. By disposing the bracket 50, which is a support member, offset with respect to the center of gravity G, a moment is generated that tends to tilt the radar device 10. By providing a plurality of brackets 50 at positions above and away from the center of gravity G, the load transmitted to each bracket 50 is dispersed.

[0058] For example, the bracket 50 is provided at the back surface side of the box body portion 40. For example, on the side surface of the box body portion 40, the bracket 50 is provided to protrude rearward toward the rear end. With such a configuration, the front surface 40A of the box body portion 40 is inserted into the opening 108 of the front bumper 100 or the recess 128 of the emblem plate 120 (see Figure 5 ). Moreover, the insertion through-hole 56 of the bracket 50 is axially aligned with the fastening hole 110 of the front bumper 100 or the fastening hole 130 of the emblem plate 120. Even when the front surface 40A of the box body portion 40 is exposed outside the vehicle, for example, as Figure 1 illustrated, since the bracket 50 is disposed inside the vehicle, it is possible to prevent the fastening points from being exposed outside the vehicle.

[0059] In addition, since the bracket 50 is provided on the back surface side with respect to the center of gravity G of the radar main body 20 (see Figure 2 ), a moment is generated that tends to cause the radar main body 20 to tilt forward. As described above, the fastening piece 55 is a flat plate, and the facing surface facing the front bumper 100 (see Figure 1 ) or the emblem plate 120 (see Figure 5 ) faces the same direction as the radiation surface 22. Therefore, the fastening piece 55 is disposed in a direction in which the moment accompanying the forward tilt is relatively likely to be deformed due to thermal creep.

[0060] In order to suppress the thermal creep of the bracket 50 accompanying the forward tilt moment, in the first to third embodiments described later, the first rib 51 and the second rib 52 are respectively provided on the bracket 50. The first rib 51 is used to suppress the bending deformation of the bracket 50. In addition, the second rib 52 is used to suppress the torsional deformation of the bracket 50.

[0061] In addition, in the first to third embodiments below, the structures of the brackets 50 are different from each other. However, in any bracket 50, the first rib 51 and the second rib 52 are provided as a common structure. Also, as described later, in the first to third embodiments below, as the structures of the brackets 50 are different from each other, the structures around the fastening holes 110 and 130 of the front bumper 100 (see Figure 1 ) and the emblem plate 120 (see Figure 5 ) are also different from each other.

[0062] 2. First Embodiment

[0063] Refer to Figure 2 、 Figure 3 The bracket 50 includes a fastening piece 55, a first rib 51, and a second rib 52.

[0064] The fastening piece 55 projects and contacts from the side surface of the box body portion 40 in the width direction (RW axis direction). In addition, the fastening piece 55 is a flat plate, and the opposing surface 55B1 that faces the front bumper 100 (refer to Figure 1 ) or the vehicle logo plate 120 (refer to Figure 5 ) faces the same direction as the radiation surface 22. Insertion through holes 56 are formed in the vehicle width direction end portions (projecting end portions) of the fastening piece 55 in the thickness direction.

[0065] The first rib 51 and the second rib 52 are erected on the fastening piece 55. For example, the first rib 51 and the second rib 52 are erected perpendicular to the fastening piece 55. As Figure 2 、 Figure 3 illustrated, in the first embodiment, the first rib 51 and the second rib 52 are formed on the back surface of the fastening piece 55. The back surface refers to the back surface of the opposing surface 55B1.

[0066] The first rib 51 is a plate piece extending from the box body portion 40 to the end portion (outer end in the width direction) of the fastening piece 55. For example, the first rib 51 is erected perpendicularly from the back surface 40B of the box body portion 40 and extends in the vehicle width direction (RW axis direction). The first rib 51 is disposed, for example, at the edge end (end in the UP axis direction) of the fastening piece 55. In Figures 1 to 5 example, the first rib 51 is provided in a continuous manner with the upper side surface or the lower side surface of the box body portion 40. The first rib 51 extends along a horizontal plane (FR-RW plane).

[0067] The second rib 52 is a plate piece erected on the fastening piece 55 in a manner orthogonal to the first rib 51. For example, on the back surface of the fastening piece 55, the second rib 52 is disposed between the insertion through hole 56 and the side surface of the box body portion 40. For example, the second rib 52 is separated from the side surface of the box body portion 40 in the width direction. In addition, if the vertical dimension (UP axis direction dimension) of the fastening piece 55 is set as the width dimension, then, for example, the second rib 52 is provided over the entire width of the fastening piece 55.

[0068] As described above, since the bracket 50 is disposed offset from the center of gravity G of the radar main body 20, a moment is generated that tends to tilt the box body portion 40 forward. Refer to Figure 4 , a bending load illustrated by a single-dot chain line and a torsional load illustrated by an arrow are input to the bracket 50.

[0069] The deformation of the bracket 50 caused by the bending load is suppressed by the first rib 51. When the bending deformation is input, as illustrated by the arrow, a tensile load is input at the root portion (the portion near the fastening piece 55) of the first rib 51, and a compressive load is input at the top portion. The input direction of this load is along the extending direction of the first rib 51. For the first rib 51, the compressive load and the tensile load are input in the direction with high compressive rigidity and tensile rigidity. Along the entire length of the fastening piece 55, the first rib 51 resists these tensile loads and compressive loads, thereby suppressing the bending deformation of the bracket 50.

[0070] In addition, the deformation of the bracket 50 caused by the torsional load is suppressed by the second rib 52. A torsional load is input to the bracket 50 about its extending direction as the axis. At this time, a shear load in the FR axis direction as illustrated by the dashed line is input to the second rib 52. The second rib 52 resists this shear load, thereby suppressing the deformation of the bracket 50.

[0071] Even when the periphery of the bracket 50 is at a high temperature, the deformation (i.e., thermal creep) of the bracket 50 is suppressed by the first rib 51 and the second rib 52 as described above. As a result, the tilting (forward tilting) of the radiation surface 22 of the radar main body 20 is suppressed.

[0072] 3. Second Embodiment

[0073] Figures 6 to 14 The radar device 10 and its support structure according to the second embodiment are illustrated. In this embodiment, a guide tube 57 is provided on the bracket 50. The guide tube 57 is formed by the first rib 51 and the second rib 52. In addition, an insertion tube 112 is formed in the frame 106 of the front bumper 100. Further, an insertion tube 132 is also formed in the vehicle logo plate 120 (refer to Figure 13 ).

[0074] Figure 7 A perspective view of the front surface 40A side of the radar device 10 is illustrated. Figure 8 A perspective view of the back surface 40B side of the radar device 10 is illustrated. Similar to Figure 2 、 Figure 3 ,above the box portion 40, brackets 50 are protruding from both side surfaces in the vehicle width direction. In addition, below the box portion 40, a bracket 50 is protruding from one side surface in the vehicle width direction. Further, the bracket 50 is provided at the back side of the box portion 40.

[0075] Refer to Figure 7 、 Figure 8 、 Figure 12 ,the bracket 50 includes first ribs 51A, 51B, second ribs 52A, 52B, and fastening pieces 55A, 55B. The fastening pieces 55A, 55B are for the front bumper 100 (refer to Figure 6 )or the vehicle logo plate 120 (refer to Figure 13The opposing surfaces face the same direction as the radiation surface 22. Insertion holes 56 are formed through the fastening pieces 55B in the thickness direction. That is, when the fastening pieces 55A and 55B are regarded as an integral fastening piece 55, the insertion holes 56 are formed at the vehicle width direction ends of the fastening piece 55.

[0076] First ribs 51A, 51B, second ribs 52A, 52B are arranged on the opposing surfaces 55A1, 55B1 of the fastening pieces 55A, 55B. The fastening piece 55A extends outward in the vehicle width direction from the side surface of the box body portion 40. The outer end of the fastening piece 55A in the vehicle width direction is connected to the second rib 52A. The fastening piece 55B is connected to the rear end of the second rib 52A. Insertion holes 56 are formed in the fastening piece 55B. By adopting a stepped structure via the second rib 52A, the fastening piece 55B is arranged at a position behind the rear surface 40B of the box body portion 40. In other words, referring to Figure 12 , the opposing surface 55B1 is farther from the radiation surface 22 of the radar main body 20 than the rear surface 40B of the box body portion 40.

[0077] By making the opposing surface 55B1 of the fastening piece 55B farther from the radiation surface 22 than the rear surface 40B of the box body portion 40, even when the radiation surface 22 is exposed on the front surface of the vehicle, the fastening points can be prevented from being exposed to the outside of the vehicle.

[0078] The first ribs 51A are arranged at the upper ends of the fastening pieces 55A, 55B. The first ribs 51B are arranged at the lower ends of the fastening pieces 55A, 55B. The first ribs 51A, 51B extend from the side surface of the box body portion 40 to reach the outer end of the fastening piece 55B in the vehicle width direction.

[0079] The second ribs 52A, 52B are orthogonal to the first ribs 51A, 51B. The second rib 52A is arranged between the fastening pieces 55A, 55B. The second rib 52B is arranged at the outer end of the fastening piece 55B in the vehicle width direction.

[0080] A guide cylinder 57 is formed by the first ribs 51A, 51B and the second ribs 52A, 52B. The guide cylinder 57 is a square cylinder. The fastening piece 55B is arranged at the rear end of the guide cylinder 57. That is, the guide cylinder 57 surrounds the insertion holes 56.

[0081] Referring to Figure 6 , correspondingly to the guide cylinder 57, an insertion cylinder 112 is formed in the front bumper 100. The insertion cylinder 112 extends rearward from the rear surface of the frame 106. The insertion cylinder 112 is, for example, a circular cylinder. Reinforcing ribs are provided at the root portion (connection portion with the frame) of the insertion cylinder 112. Referring to Figure 12 , the inner cavity of the insertion cylinder 112 becomes a fastening hole 110.

[0082] In addition, referring to Figure 13, correspondingly to the guide tube 57, an insertion tube 132 is formed in the vehicle logo plate 120. The insertion tube 132 extends from the back surface of the vehicle logo plate 120 toward the rear of the vehicle. The insertion tube 132 is, for example, a cylinder. Reinforcing ribs are provided at the root portion of the insertion tube 132. Refer to Figure 14 , the inner cavity of the insertion tube 132 becomes the fastening hole 130.

[0083] Figures 9 to 12 An example of the process of fastening the radar device 10 to the front bumper 100 is illustrated. Refer to Figure 9 , the guide tube 57 of the radar device 10 covers the insertion tube 112 of the front bumper 100. The rear end of the insertion tube 112 abuts against the fastening piece 55B.

[0084] At this time, as Figure 10 illustrated, the guide tube 57 is hooked on the insertion tube 112 to prevent the radar device 10 from falling off the front bumper 100. That is, the radar device 10 is temporarily fixed to the front bumper 100 by the guide tube 57 and the insertion tube 112. The operator can temporarily let go of the radar device 10 to pick up screws and tools.

[0085] In addition, by inserting the guide tube 57 into the insertion tube 112 of the front bumper 100, the insertion hole 56 and the fastening hole 110 are axially aligned. As Figure 11 、 Figure 12 illustrated, the screw 90 is screwed into the insertion through-hole 56 and the fastening hole 110. By threading (cutting) the inner peripheral surface of the fastening hole 110 with the screw 90, the radar device 10 is fastened to the front bumper 100.

[0086] Figure 13 、 Figure 14 An example of the process of fastening the radar device 10 to the vehicle logo plate 120 is illustrated. Refer to Figure 13 , the guide tube 57 of the radar device 10 covers the insertion tube 132 of the vehicle logo plate 120. The rear end of the insertion tube 132 abuts against the fastening piece 55B. Thus, the radar device 10 is temporarily fixed to the vehicle logo plate 120. Further, the screw 90 is screwed into the insertion through-hole 56 and the fastening hole 130. By threading (cutting) the inner peripheral surface of the fastening hole 130 with the screw 90, the radar device 10 is fastened to the vehicle logo plate 120.

[0087] In this way, in the second embodiment, the guide tube 57 is formed by the first ribs 51A, 51B and the second ribs 52A, 52B. That is, the rib members for suppressing the thermal creep of the bracket 50 are also used as the temporary fixing unit of the radar device 10.

[0088] In addition, when the fastening force decreases due to thermal creep in the guide tube 57 and the insertion tubes 112 and 132, the relative position change between the radar device 10 and the front bumper 100 or the emblem board 120 is suppressed. The fastening piece 55B and the insertion tubes 112 and 132 are fastened by screws 90. At this time, an axial force is input to the protruding ends of the fastening piece 55B and the insertion tubes 112 and 132. Due to thermal creep, so-called stress relaxation occurs, and the fastening piece 55B deforms and dents, resulting in a so-called non-rotating loosening where the fastening force decreases.

[0089] Here, the insertion tubes 112 and 132 are inserted into the guide tube 57. That is, the insertion tubes 112 and 132 are surrounded by the guide tube 57. Therefore, even if the fastening force based on the screws 90 decreases, the relative position change between the radar device 10 and the front bumper 100 or the emblem board 120 can be suppressed by the surrounding structure of the insertion tubes 112 and 132 and the guide tube 57.

[0090] 4. Third Embodiment

[0091] Figures 15 to 17 The radar device and its support structure of the third embodiment are illustrated.

[0092] Figure 16 An example of a perspective view of the radar device 10 alone. Similar to Figure 2 、 Figure 3 In the upper part of the box body 40, brackets 50 are protruding and provided from both side surfaces in the vehicle width direction. In addition, in the lower part of the box body 40, a bracket 50 is protruding and provided from one side surface in the vehicle width direction. In addition, the bracket 50 is provided at the back side of the box body 40. In addition, Figure 16 The three brackets illustrated are all of the same shape. Regarding the bracket 50 arranged below, the cross-sectional structure is illustrated.

[0093] The bracket 50 includes first ribs 51A and 51B, second ribs 52A and 52B, and fastening pieces 55A and 55B. The opposing surfaces of the fastening pieces 55A and 55B that oppose the front bumper 100 (refer to Figure 15 ), or the emblem board 120 (refer to Figure 17 ) face the same direction as the radiation surface 22. An insertion through-hole 56 is formed in the fastening piece 55B in the thickness direction. That is, when the fastening pieces 55A and 55B are regarded as an integral fastening piece 55, an insertion through-hole 56 is formed at the end in the vehicle width direction of the fastening piece 55.

[0094] The fastening piece 55A extends outward in the vehicle width direction from the side surface of the box body 40. The outer end in the vehicle width direction of the fastening piece 55A is connected to the second rib 52A. The fastening piece 55B is connected to the front end of the second rib 52A. An insertion through-hole 56 is formed in the fastening piece 55B.

[0095] The first rib 51A is provided at the upper ends of the fastening pieces 55A and 55B. The first rib 51B is provided at the lower ends of the fastening pieces 55A and 55B. The first ribs 51A and 51B extend from the side surface of the box body portion 40 to reach the outer end in the vehicle width direction of the fastening piece 55B.

[0096] The second ribs 52A and 52B are orthogonal to the first ribs 51A and 51B. The second rib 52A is disposed between the fastening pieces 55A and 55B. The second rib 52B is disposed at the outer end in the vehicle width direction of the fastening piece 55B.

[0097] The guide cylinder 57 is formed by the first ribs 51A and 51B and the second ribs 52A and 52B. The guide cylinder 57 is a square cylinder. The fastening piece 55B is provided at the front end of the guide cylinder 57. That is, the guide cylinder 57 surrounds the insertion through hole 56.

[0098] Refer to Figure 15 , a recessed portion 150 is formed in the front bumper 100 corresponding to the guide cylinder 57. The recessed portion 150 is formed on the back surface of the frame 106. The recessed portion 150 becomes a square hole corresponding to the shape of the guide cylinder 57. A fastening hole 110 is formed through the bottom surface of the recessed portion 150.

[0099] In addition, refer to Figure 17 , a recessed portion 160 is formed in the vehicle logo plate 120 corresponding to the guide cylinder 57. The recessed portion 160 is formed on the back surface of the vehicle logo plate 120. The recessed portion 160 becomes a square hole corresponding to the shape of the guide cylinder 57. A fastening hole 130 is formed through the bottom surface of the recessed portion 160.

[0100] Refer to Figure 15 , when the radar device 10 is fastened to the front bumper 100, the guide cylinder 57 of the radar device 10 is inserted into the recessed portion 150 of the front bumper 100. At this time, the fastening piece 55B provided at the front end of the guide cylinder 57 (refer to Figure 16 ) abuts against the bottom surface of the recessed portion 150. Along with this, the insertion through hole 56 of the fastening piece 55B is axially aligned with the fastening hole 110 of the recessed portion 150.

[0101] In addition, by inserting the guide cylinder 57 into the recessed portion 150 of the front bumper 100, the radar device 10 is temporarily fixed to the front bumper 100. The operator can temporarily release his hand from the radar device 10 to pick up screws and tools. Further, by screwing the screw 90 into the insertion through hole 56 and the fastening hole 110, the radar device 10 is fastened to the front bumper 100.

[0102] Refer to Figure 17 , when the radar device 10 is fastened to the vehicle logo plate 120, the guide cylinder 57 of the radar device 10 is inserted into the recessed portion 160 of the vehicle logo plate 120. At this time, the fastening piece 55B provided at the front end of the guide cylinder 57 (refer to Figure 16The fastening piece 55B of () abuts against the bottom surface of the recessed portion 160. Along with this, the insertion through-hole 56 of the fastening piece 55B and the fastening hole 130 of the recessed portion 160 are axially aligned.

[0103] In addition, by inserting the guide cylinder 57 into the recessed portion 160 of the vehicle logo plate 120, the radar device 10 is temporarily fixed to the front bumper 100. Further, by screwing the screw 90 into the insertion through-hole 56 and the fastening hole 130, the radar device 10 is fastened to the front bumper 100.

[0104] In addition, as described above, due to thermal creep, the fastening piece 55B is recessed, and the fastening force based on the screw 90 is reduced. In this case, the relative position change between the radar device 10 and the front bumper 100 or the vehicle logo plate 120 is suppressed by the surrounding structure formed by the guide cylinder 57 and the recessed portions 150 and 160.

[0105] The present invention is not limited to the embodiments described above, and all changes and modifications made without departing from the technical scope or essence of the present invention defined by the scope of claims are also covered by the present invention.

Claims

1. A radar device, comprising: A radar main body having a radiation surface; and A housing that houses the radar main body, wherein The housing includes: A box portion that houses the radar main body; and A bracket that protrudes from the box portion and is fastened to a bumper or a vehicle logo plate, The bracket is made of a resin material, The bracket is disposed at a position offset in the thickness direction of the radar main body with respect to the center of gravity of the radar main body, and The bracket includes: A fastening piece, the opposing surface facing the bumper or the vehicle logo plate faces the same direction as the radiation surface, and insertion through holes are provided at the ends; and Ribs that are erected on the fastening piece, The rib includes a first rib that extends from the box portion to the end of the fastening piece.

2. The radar device according to claim 1, wherein The rib includes a second rib that is orthogonal to the first rib.

3. The radar device according to claim 2, wherein The first rib and the second rib are disposed on the opposing surface of the fastening piece, A guiding cylinder is formed by a pair of the first ribs and a pair of the second ribs.

4. A supporting structure of a radar device, comprising: the radar device according to claim 3; and the bumper or the vehicle logo plate to which the radar device is fastened, wherein The guiding cylinder surrounds the insertion through hole, The bumper or the vehicle logo plate has an insertion cylinder that is inserted into the guiding cylinder.

5. A supporting structure of a radar device, comprising: the radar device according to claim 3; and the bumper or the vehicle logo plate to which the radar device is fastened, wherein The guiding cylinder surrounds the insertion through hole, The bumper or the vehicle logo plate has a recessed portion into which the guiding cylinder is inserted, A fastening hole that is axially aligned with the insertion through hole is provided at the bottom of the recessed portion.

6. The supporting structure of the radar device according to claim 4 or 5, wherein The radar device is fastened to the bumper or the vehicle logo plate with the radiation surface facing the horizontal direction, A plurality of the brackets are provided at the upper part of the box portion.

7. The supporting structure of the radar device according to claim 3 or 4, wherein The opposing surface of the fastening piece is farther from the radiation surface than the back surface of the box portion.

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