JP2018103843A - Radar cover and method for manufacturing radar cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent impression of an emblem and the like provided in a radar cover from changing by preventing a positional relationship between a transparent member and a colored core from being displaced from a reference position, in a radar cover having a colored core.SOLUTION: In at least part of a region where an inner core storing recess part 2b is formed when being viewed from a front side of a transparent member 2, a depth dimension d1 of the inner core storing recess part 2b is set larger than a thickness dimension d2 of an inner core 5, and a region where the inner core 5 is not disposed in a space surrounded by the inner core storing recess part 2b is filled with a protrusion 6b that is part of a support member 6.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a radar cover and a method for manufacturing the radar cover.

  In recent years, radar units that detect obstacles and the like around a vehicle using radio waves such as millimeter waves are mounted on the vehicle. Generally, a radar unit is installed in a state of being covered with a radar cover that is decorated with an emblem or the like. Such a radar unit transmits and receives radio waves that have passed through the radar cover. For this reason, it is necessary to form the radar cover so that it can transmit radio waves as disclosed in, for example, Patent Document 1 and Patent Document 2.

  Further, in Patent Document 3, a radar cover in which an inner core having a discontinuous metal film formed on a surface layer is accommodated in an accommodation recess formed on the back surface of a transparent member, and a support member is joined to the back surface of the transparent member. It is disclosed. The radar cover having such an inner core is manufactured by integrating the inner core with the support member by injection molding in the housing recess.

Japanese Patent Laying-Open No. 2015-99081 Japanese Patent Laid-Open No. 2006-80479 JP 2011-46183 A

  By the way, in a radar cover having an inner core, a discontinuous film made of metal is provided on the surface layer, so that an inner core (colored core) whose surface is made silver forms a part of an emblem or the like that is visible from the outside. When the position of the colored core with respect to the transparent member is displaced from the original reference position, an impression such as an emblem visually recognized from the outside is changed unintentionally.

  The present invention has been made in view of the above-described problems. In a radar cover having a colored core, the positional relationship between the transparent member and the colored core is prevented from being displaced from the reference position, and is applied to the radar cover. The purpose is to prevent the impression of the emblem and the like from changing.

  The present invention adopts the following configuration as means for solving the above-described problems.

  1st invention is a radar cover arrange | positioned on the path | route of the electromagnetic wave of the radar unit which detects the surrounding condition of a vehicle, Comprising: The plate-shaped transparent member by which the accommodation recessed part dented toward the front was formed in the back side And a colored core housed in the housing recess in contact with the bottom surface of the housing recess, and a support member joined to the back surface of the transparent member, and viewed from the front side of the transparent member In at least a part of the formation region of the accommodation recess, the depth dimension of the accommodation recess is set larger than the thickness dimension of the colored core, and the color of the space surrounded by the accommodation recess is part of the support member A configuration is adopted in which the region where the core is not arranged is filled.

  The second invention adopts a configuration in which the inner wall surface of the housing recess is bent and connected to the back surface of the transparent member in the first invention.

  According to a third invention, in the first or second invention, the colored core has a discontinuous metal film provided on a surface layer and capable of transmitting the radio wave.

  A fourth invention is a method of manufacturing a radar cover arranged on a radio wave path of a radar unit that detects a surrounding situation of a vehicle, wherein the radar cover has a receiving recess that is recessed toward the front on the back side. A plate-shaped transparent member formed; a colored core housed in the housing recess in contact with the bottom surface of the housing recess; and a support member joined to the back surface of the transparent member. Transparent member formation for forming the transparent member having the receiving recess whose depth dimension is set larger than the thickness dimension of the colored core in at least a part of the forming area of the receiving recess viewed from the front side of the member A colored core arranging step of arranging the colored core in a state of being in contact with the bottom of the housing recess, and a supporting member forming step of forming the supporting member by injection molding on the back side of the transparent member. You A construction is adopted.

  According to a fifth invention, in the fourth invention, the transparent member forming step employs a configuration in which the inner wall surface of the housing recess is bent to form the transparent member connected to the back surface.

  According to a sixth invention, in the fourth or fifth invention, the colored core having a discontinuous metal film capable of transmitting the radio wave on a surface layer is arranged in the accommodating recess in the colored core arranging step. Is adopted.

  In this invention, the depth dimension of the accommodation recessed part provided in the back side of the transparent member is set larger than the thickness dimension of a colored core. For this reason, even when the colored core is accommodated in the accommodating recess, the entire accommodating recess is not filled with the colored core, and a region where the colored core does not exist is generated in a partial region on the support member side of the accommodating recess. . Further, in the present invention, the support member is filled in a region where the colored core of the housing recess does not exist. According to the present invention, since the entire back surface of the colored core is securely adhered to the support member and the entire side surface of the colored core is in contact with the receiving recess, the colored core is in contact with the transparent member. Displacement can be reliably prevented.

  Furthermore, in the present invention, when manufacturing the radar cover, the support member is formed by injection molding in a state where the colored core is accommodated in the accommodating recess of the transparent member. At this time, the entire colored core is reliably accommodated inside the accommodation recess, and the back surface of the colored core is disposed on the inner side (front side of the transparent member) than the back surface of the transparent member. As a result, the inner wall surface of the housing recess protrudes to a position higher than the colored core (a position protruding from the back of the colored core), and the colored core flows out of the housing recess when the material for forming the support member is poured. Can be reliably prevented. Therefore, according to this invention, it can prevent reliably that a colored core will displace with respect to a transparent member.

  Therefore, according to the present invention, in the radar cover having the colored core, the positional relationship between the transparent member and the colored core is prevented from being displaced from the reference position, and the impression of the emblem or the like applied to the radar cover is changed. Can be prevented.

It is a front view which shows typically the radar cover in one Embodiment of this invention. (A) is AA sectional drawing of FIG. 1, (b) is BB sectional drawing of FIG. It is a typical expanded sectional view containing the inner core accommodation recessed part 2b with which the radar cover in one Embodiment of this invention is provided. It is a schematic diagram for demonstrating the manufacturing method of the radar cover in one Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the radar cover in one Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the radar cover in one Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the radar cover in one Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the radar cover in one Embodiment of this invention.

  Hereinafter, an embodiment of a radar cover and a method of manufacturing the radar cover according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1 is a front view schematically showing a radar cover 1 of the present embodiment. FIG. 2A is a cross-sectional view taken along the line AA in FIG. FIG. 2B is a cross-sectional view taken along the line BB in FIG. As shown in FIG. 1, the radar cover 1 according to the present embodiment includes an emblem E disposed in the center and a mesh-shaped outer design portion D provided around the emblem E. In FIG. 1, the emblem E and a part of the outer design portion D are shown in white, but the area shown in white is assumed to be silver in this embodiment. Moreover, the area | region shown with the dot pattern of the emblem E and the outer side design part D shall be black in this embodiment.

  As shown in FIGS. 2A and 2B, the radar cover 1 of the present embodiment is disposed so as to cover the radar unit X that detects the surrounding situation of the vehicle from the front side of the vehicle. It has transparency to the radio waves used in unit X. The radar cover 1 according to the present embodiment is disposed on the radio wave path of the radar unit X (a region where the radio wave emitted from the radar unit X is propagated). FIG. 2A and FIG. As shown to b), the transparent member 2, the printing layer 3, the coating material layer 4, the inner core 5 (colored core), and the support member 6 are provided.

  The transparent member 2 is formed of a transparent resin material, and is a member that is disposed on the outermost side of the vehicle among the constituent members of the radar cover 1. The transparent member 2 has a smooth surface on the front side in order to improve the visibility of the emblem E and the outer design portion D from the outside of the vehicle. In addition, a recess 2 a is formed on the back side of the transparent member 2 (the support member 6 side). In the radar cover 1 of the present embodiment, the transparent member 2 includes the inner core accommodating recess 2b (accommodating recess) in which the inner core 5 is accommodated as the recess 2a, and the paint layer 4 is formed by applying paint to the inner wall surface. And a coating recess 2c.

  The inner core housing recess 2b has a circular shape avoiding the letter “F” when viewed from the front, and is formed in the center of the radar cover 1 where the emblem E is disposed. Such an inner core accommodating recess 2b accommodates the inner core 5 in a state where the inner core 5 is in contact with the inner wall surface.

  FIG. 3 is a schematic enlarged sectional view including the inner core housing recess 2b. As shown in this figure, in this embodiment, the depth dimension d1 of the inner core accommodating recess 2b is set to be larger than the thickness dimension d2 of the inner core 5. The depth dimension d1 of the inner core housing recess 2b is the distance dimension from the bottom surface of the inner core housing recess 2b to the virtual surface S flush with the back surface of the transparent member 2 in the direction perpendicular to the back surface of the transparent member 2. means. That is, the depth dimension d1 of the inner core housing recess 2b is a dimension that indicates the depth distance from the back surface of the transparent member 2 of the inner core housing recess 2b that is recessed from the back surface of the transparent member 2 toward the front surface of the transparent member 2. is there. Further, the thickness dimension d2 of the inner core 5 refers to the distance from the front surface of the transparent member 2 of the inner core 5 to the rear surface of the transparent member 2 of the inner core 5 in the direction perpendicular to the rear surface of the transparent member 2. It means the distance dimension. That is, the thickness dimension d2 of the inner core 5 is a dimension indicating the thickness of the inner core 5 that is plate-shaped.

  Further, as shown in FIG. 3, the inner wall surface of the inner core housing recess 2 b is bent and connected to the back surface of the transparent member 2 at an angle of approximately 90 °. That is, the boundary portion between the inner wall surface of the coating recess 2c and the printing layer forming region R is a so-called pin angle. The angle formed by the inner wall surface of the inner core housing recess 2b and the back surface of the transparent member 2 is preferably 90 °, but may be about 93 ° in consideration of the draft during injection molding.

  Returning to FIG. 2, the coating recess 2 c includes a frame-like portion 2 d provided in a frame shape on the outer edge portion of the radar cover 1 as viewed from the front, and a mesh-like portion 2 e provided in a mesh shape inside the frame-like portion 2 d. Have. In the coating recess 2c, a coating layer 4 is provided so as to cover the inner wall surface. In addition, a part of the support member 6 enters the inside of the coating recess 2c, and the coating layer 4 is covered from the back side by the support member 6.

  Moreover, in this embodiment, the area | region where the recessed part 2a of the surface at the side of the supporting member 6 of the transparent member 2 is not provided is set as the printing layer formation area R in which the printing layer 3 is formed. The print layer forming region R is a flat surface and is covered with the print layer 3 from the back side of the transparent member 2.

  Such a transparent member 2 is made of a transparent synthetic resin such as colorless PC (polycarbonate) or PMMA (polymethyl methacrylate resin), and has a thickness of about 1.5 mm to 10 mm. Further, the front side surface of the transparent member 2 is subjected to a hard coat treatment for preventing scratches or a clear coat treatment of a urethane-based paint as necessary. In addition, if it is transparent synthetic resin provided with scratch resistance, these damage prevention processes are unnecessary.

  The print layer 3 is a thin film layer printed on the print layer formation region R of the transparent member 2 and is black as described above in the present embodiment. The print layer 3 is formed by transferring black ink to the print layer forming region R and drying the ink. The printing layer 3 can be formed by arranging, for example, a black resin ink capable of transmitting radio waves used in the radar unit X on the printing layer forming region R by a silk printing method and naturally drying the ink. . Such a print layer 3 is visible from the outside through the transparent member 2, and forms an area shown by the dot pattern shown in FIG.

  The paint layer 4 is a thin film layer formed by drying a silver paint that can transmit radio waves used in the radar unit X. In the present embodiment, the paint layer 4 has a silver color as described above. As shown in FIGS. 2A and 2B, the paint layer 4 is provided on the entire back surface of the transparent member 2 on which the printed layer 3 is formed, except for a region where the emblem E is formed. ing. That is, the paint layer 4 covers the surface of the print layer 3 on the support member 6 side except for the region where the emblem E is formed. This paint layer 4 can be formed by, for example, applying a paint containing a pearl pigment and drying it naturally. Such a coating layer 4 is visible from the outside through the transparent member 2 in the coating recess 2c, and forms a white area of the outer design portion D shown in FIG.

  The inner core 5 has a base portion made of a resin capable of transmitting radio waves used in the radar unit X, and a glittering film formed so as to cover the surface of the base portion. As the glitter film, for example, a discontinuous metal film in which a large number of gaps through which radio waves can be transmitted can be used, and an indium film formed by a sputtering method or a vacuum evaporation method can be used. That is, the inner core 5 has a discontinuous metal film that is provided on the surface layer and can transmit radio waves. By having such a discontinuous metal film, the inner core 5 is silver. The inner core 5 may have a transparent top coat layer that covers the surface of the glitter film and an undercoat layer that covers the back surface of the glitter film. Such an inner core 5 is fitted and disposed in the inner core housing recess 2b of the transparent member 2 so that the glittering film faces the inner wall surface of the inner core housing recess 2b. Such an inner core 5 is visible from the outside through the transparent member 2 and forms a white region of the emblem E shown in FIG.

  As described above, the thickness dimension d2 of the inner core 5 is set to be smaller than the depth dimension d1 of the inner core housing recess 2b. For this reason, when the transparent member 2 and the inner core 5 are viewed as an integrated object, a recess is formed on the back surface of the integrated object.

  The support member 6 is joined to the back surface of the transparent member 2 and supports the transparent member 2 and is made of a black resin material. The support member 6 has an engaging portion 6a that protrudes toward the engine room. The engaging portion 6a has a tip formed in a claw shape, and the tip is locked to, for example, a radiator grill body. Further, in the present embodiment, the support member 6 has a protrusion 6 b that is accommodated in the inner core accommodating recess 2 b and joined to the back surface of the inner core 5. That is, in the radar cover 1 of the present embodiment, the region where the inner core 5 is not disposed in the space surrounded by the inner core receiving recess 2b of the transparent member 2 is the protrusion 6b that is a part of the support member 6 (see FIG. 3 is filled in the region from the inner core 5 to the virtual surface S shown in FIG.

  In the present embodiment, as viewed from the front side of the transparent member 2, a region where the inner core 5 is not disposed is formed in the entire region where the inner core housing recess 2 b is formed. For this reason, in this embodiment, the protrusion 6b of the support member 6 is formed in the whole region of the formation area of the inner core accommodation recessed part 2b seeing from the front side of the transparent member 2. FIG. Therefore, the protrusion 6b of the support member 6 is connected to the inner wall surface of the inner core housing recess 2b over the entire area in the circumferential direction.

  Such a support member 6 includes ABS (acrylonitrile / butadiene / styrene copolymer synthetic resin), AES (acrylonitrile / ethylene / styrene copolymer synthetic resin), ASA (acrylonitrile / styrene / acrylate), PBT (polybutylene terephthalate), It is made of synthetic resin such as colored PC, PET (polyethylene terephthalate), or a composite resin thereof, and has a thickness of about 1.0 mm to 10 mm.

  Then, the manufacturing method of the radar cover 1 of this embodiment is demonstrated with reference to FIGS.

  First, as shown in FIG. 4, the transparent member 2 is formed. 4A is a cross-sectional view at the same position as FIG. 2A, and FIG. 4B is a cross-sectional view at the same position as FIG. 2B. Here, the transparent member 2 is formed by injection molding using the mold 10. The mold 10 includes a cavity mold 11 on the fixed side and a core mold 12 on the moving side. Furthermore, in this embodiment, the core metal mold | die 12 has the base 12a which forms the printing layer formation area | region R, and the nest | insert 12b for forming the recessed part 2a. The insert 12b is separated from the base 12a of the core mold 12, and protrudes from the surface of the base 12a toward the cavity mold 11 while being fixed to the base 12a. By providing the insert 12b in the core mold 12 in this way, the surface of the base 12a and the surface of the insert 12b can be bent and connected, and the printed layer forming region R and the inner wall surface of the recess 2a are bent. The transparent member 2 connected to each other can be formed.

  In the radar cover 1 of the present embodiment, as described above, the depth dimension d1 of the inner core housing recess 2b of the transparent member 2 is set larger than the thickness dimension d2 of the inner core 5 (see FIG. 3). That is, the process shown in FIG. 4 corresponds to a transparent member forming process for forming the transparent member 2 having the inner core housing recess 2b in which the depth dimension d1 is set larger than the thickness dimension d2 of the inner core 5.

  Subsequently, as shown in FIG. 5, the printing layer 3 is formed. 5A is a cross-sectional view at the same position as FIG. 2A, and FIG. 5B is a cross-sectional view at the same position as FIG. 2B. Here, the printing layer 3 is formed by transferring ink to a printing layer forming region R that is a region excluding the concave portion 2a of the transparent member 2 by a printing method such as a silk printing method and drying the ink. . At this time, in the radar cover 1 of the present embodiment, the printed layer forming region R and the inner wall surface of the recess 2a are bent and connected. For this reason, the ink transferred to the printing layer forming region R moves to the inner wall surface of the recess 2a as compared with the case where the printing layer forming region R and the inner wall surface of the recess 2a are connected by a smooth curved surface. hard. According to such a method of manufacturing the radar cover 1 of the present embodiment, it is possible to prevent the end portion of the printing layer 3 from meandering unintentionally.

  Subsequently, as shown in FIG. 6, a paint layer 4 is formed. 6A is a cross-sectional view at the same position as FIG. 2A, and FIG. 6B is a cross-sectional view at the same position as FIG. 2B. Here, for example, silver mica paint is applied to the back side of the transparent member 2 on which the printing layer 3 is formed in a state where the region M where the emblem E shown in FIG. The paint layer 4 is formed by drying the mica paint. In the coating layer 4 formed in this way, except for the region where the emblem E is formed, the coating layer 4 that covers the printing layer 3 and adheres directly to the inner wall surfaces of all the coating recesses 2c is formed.

  Then, as shown in FIG. 7, the inner core 5 is accommodated in the inner core accommodation recessed part 2b. FIG. 7 is a cross-sectional view at the same position as FIG. Here, the inner core 5 formed in parallel with the formation of the transparent member 2, the printing layer 3, or the paint layer 4 described above is accommodated in the inner core accommodating recess 2 b. The inner core 5 is formed by forming a glittering discontinuous metal film such as an indium layer on the base portion previously formed by injection molding by vacuum vapor deposition or sputtering. Note that a top coat layer and an undercoat layer are formed on the inner core 5 as necessary. Such an inner core 5 is accommodated in the inner core accommodating recess 2b with the glittering discontinuous metal film facing the inner wall surface side of the inner core accommodating recess 2b and in contact with the bottom of the inner core accommodating recess 2b. The process shown in FIG. 7 is a process of arranging the inner core 5 in a state where the inner core 5 is in contact with the bottom of the inner core housing recess 2b, and corresponds to the colored core arrangement process of the present invention.

  As described above, in the radar cover 1 of the present embodiment, the depth dimension d1 of the inner core housing recess 2b of the transparent member 2 is set larger than the thickness dimension d2 of the inner core 5 (see FIG. 3). . For this reason, when the inner core 5 is accommodated in the inner core accommodating recess 2b, the region from the back surface of the inner core 5 to the virtual surface S shown in FIG. 3 is a space where the inner core 5 does not exist.

  Subsequently, as shown in FIG. 8, a support member 6 is formed. 8A is a cross-sectional view at the same position as FIG. 2A, and FIG. 8B is a cross-sectional view at the same position as FIG. 2B. Here, the transparent member 2 in which the inner core 5 is installed in the inner core housing recess 2b is placed inside an injection mold, and insert molding is performed by injecting molten resin to the back side of the transparent member 2. The support member 6 is formed. Such a support member 6 is welded to the transparent member 2 by heat at the time of insert molding, and is disposed so as to cover the inner core 5. Thereby, the inner core 5 is fixed to the transparent member 2.

  At this time, when the inner wall surface of the inner core housing recess 2b protrudes beyond the back surface of the inner core 5 and the material for forming the support member 6 is poured, it is possible to prevent the inner core housing recess 2b from flowing out of the inner core housing recess 2b. In the space surrounded by the inner core housing recess 2b, the molten resin flows into and fills a region where the inner core 5 does not exist, and this portion cools to form the protrusion 6b. The process shown in FIG. 8 is a process of forming the support member 6 on the back side of the transparent member 2 by injection molding and corresponds to the support member forming process of the present invention.

  In the radar cover 1 according to the present embodiment described above, the depth dimension d1 of the inner core housing recess 2b provided on the back side of the transparent member 2 is set to be larger than the thickness dimension d2 of the inner core 5. Yes. For this reason, even if the inner core 5 is accommodated in the inner core accommodating recess 2b, the inner core accommodating recess 2b is not completely filled with the inner core 5, and the inner core is partially covered by the support member 6 side of the inner core accommodating recess 2b. An area where 5 does not exist is generated. Furthermore, in the radar cover 1 of the present embodiment, the support member 6 is filled in a region where the inner core 5 of the inner core housing recess 2b does not exist. According to the radar cover 1 of the present embodiment as described above, the entire back surface of the inner core 5 is securely in contact with the support member 6, and the entire side surface of the inner core 5 is in contact with the inner wall surface of the inner core housing recess 2b. Therefore, it is possible to reliably prevent the inner core 5 from being displaced with respect to the transparent member 2. Further, in the radar cover 1 of the present embodiment, since the protrusion 6b of the support member 6 enters the inner core accommodating recess 2b, the coupling force between the transparent member 2 and the support member 6 is increased, and the transparent member 2 and the support member 6 are increased. And can be prevented from peeling off.

  Further, in the method of manufacturing the radar cover 1 of the present embodiment, the support member 6 is formed by injection molding in a state where the inner core 5 is accommodated in the inner core accommodating recess 2b of the transparent member 2. At this time, the entire inner core 5 is reliably accommodated inside the inner core accommodating recess 2 b, and the back surface of the inner core 5 is disposed on the inner side (front side of the transparent member 2) than the back surface of the transparent member 2. As a result, the inner wall surface of the inner core receiving recess 2b protrudes from the back surface of the inner core 5, and when the forming material of the support member 6 is poured, the inner core 5 can be reliably prevented from flowing out of the inner core receiving recess 2b. it can. Therefore, according to the method for manufacturing the radar cover 1 of the present embodiment, the inner core 5 can be reliably prevented from being displaced with respect to the transparent member 2.

  Further, in the radar cover 1 and the method for manufacturing the radar cover 1 according to the present embodiment, the inner wall surface of the inner core housing recess 2 b is bent and connected to the back surface of the transparent member 2. For this reason, compared with the case where the inner wall surface of the inner core accommodation recessed part 2b curves and is smoothly connected with the back surface of the transparent member 2, it can prevent more reliably that the inner core 5 flows out from the inner core accommodation recessed part 2b. .

  Further, in the radar cover 1 and the method for manufacturing the radar cover 1 according to the present embodiment, it is possible to reliably prevent the inner core 5 from being displaced with respect to the transparent member 2 as described above. For this reason, when a discontinuous metal film capable of transmitting radio waves is formed on the surface layer of the inner core 5, it is possible to prevent the discontinuous metal film from being rubbed and damaged by the inner wall surface of the transparent member 2.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, in the said embodiment, seeing from the front side of the transparent member 2, the area | region where the inner core 5 is not arrange | positioned is the space enclosed by the inner core accommodation recessed part 2b in the whole region of the formation area of the inner core accommodation recessed part 2b. Is formed. However, the present invention is not limited to this, and when viewed from the front side of the transparent member 2, only a part of the formation region of the inner core housing recess 2b is a space surrounded by the inner core housing recess 2b. It is also possible to adopt a configuration in which a region where 5 is not arranged is formed.

  DESCRIPTION OF SYMBOLS 1 ... Radar cover, 2 ... Transparent member, 2a ... Recessed part, 2b ... Inner core accommodating recessed part (accommodating recessed part), 2c ... Paint recessed part, 2d ... Frame-shaped part, 2e ... Reticulated part, 3 ... Print layer, 4 ... Paint layer, 5 ... Inner core (colored core), 6 ... Support member, 6b ... Projection, D ... Outer design part, E ... Emblem, R ... Print layer formation region, S: Virtual plane, X: Radar unit

Claims (6)

A radar cover disposed on a radio wave path of a radar unit that detects the surroundings of a vehicle,
A plate-like transparent member in which a housing recess recessed toward the front is formed on the back side;
A colored core housed in the housing recess in contact with the bottom surface of the housing recess;
A support member joined to the back surface of the transparent member,
In at least a part of the formation region of the housing recess as viewed from the front side of the transparent member, a depth dimension of the housing recess is set larger than a thickness dimension of the colored core, and a part of the support member is A radar cover, characterized in that an area in which the colored core is not arranged in a space surrounded by a housing recess is filled.   The radar cover according to claim 1, wherein an inner wall surface of the housing recess is bent and connected to a back surface of the transparent member.   The radar cover according to claim 1, wherein the colored core has a discontinuous metal film provided on a surface layer and capable of transmitting the radio wave. A method of manufacturing a radar cover arranged on a radio wave path of a radar unit for detecting a surrounding situation of a vehicle,
The radar cover has a plate-like transparent member in which a housing recess recessed toward the front is formed on the back side, and a colored core housed in the housing recess in a state in contact with the bottom surface of the housing recess, A support member joined to the back surface of the transparent member,
Transparent forming the transparent member having the accommodating recess in which the depth dimension is set larger than the thickness dimension of the colored core in at least a part of the forming area of the accommodating recess viewed from the front side of the transparent member A member forming step;
A colored core arrangement step of arranging the colored core in a state of being in contact with the bottom of the accommodating recess;
And a support member forming step of forming the support member by injection molding on the back side of the transparent member.   5. The method of manufacturing a radar cover according to claim 4, wherein, in the transparent member forming step, the transparent member connected to the back surface is formed by bending an inner wall surface of the housing recess.   The method for manufacturing a radar cover according to claim 4 or 5, wherein, in the colored core arranging step, the colored core having a discontinuous metal film capable of transmitting the radio wave on a surface layer is arranged in the housing recess.

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