Radio wave transmissive cover

Patent metadata

Field	Value
Publication number	US-10530045-B2
Application number	US-201816032399-A
Country	US
Kind code	B2
Filing date	Jul 11, 2018
Priority date	Jul 26, 2017
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A radio wave transmissive cover includes a cover body having a transparent first cover layer, a colored second cover layer, and a base material layer. The second cover layer is formed on the back surface of the first cover layer. The base material layer is formed on the back surface of the second cover layer. An opening is provided between the outer circumference and the center of the cover body. The opening extends through at least the base material layer and the second cover layer in the thickness direction, and the opening is open on the back surface of the base material layer. The base material layer and the second cover layer are joined together through a recess-protrusion relationship, thereby forming a sealing portion around the opening. The sealing portion seals the gap between the base material layer and the second cover layer.

First claim

The invention claimed is:

1. A radio wave transmissive cover configured to be arranged in a radio wave path of a radio wave radar device, the radio wave transmissive cover comprising a cover body, wherein the cover body includes:
a transparent first cover layer made of a first plastic material;
a colored second cover layer made of a material containing the first plastic material and colorant, the second cover layer being formed on a back surface of the first cover layer; and
a base material layer made of a second plastic material different from the first plastic material, the base material layer being formed on a back surface of the second cover layer, wherein
an opening is provided between an outer circumference and a center of the cover body, wherein the opening extends through at least the base material layer and the second cover layer in a thickness direction, and the opening is open on a back surface of the base material layer, and
the base material layer and the second cover layer are joined together through a recess-protrusion relationship, thereby forming a sealing portion around the opening, the sealing portion sealing a gap between the base material layer and the second cover layer.

2. The radio wave transmissive cover according to claim 1 , wherein the opening extends through only the base material layer and the second cover layer in the thickness direction.

3. The radio wave transmissive cover according to claim 1 , wherein the opening extends through the cover body in the thickness direction.

4. The radio wave transmissive cover according to claim 1 , wherein
the second cover layer includes, apart from the opening, a through-hole extending through the second cover layer in the thickness direction, and
the cover body includes a decorative layer formed on portions of the first cover layer and the base material layer that correspond to the through-hole.

Assignees

• Toyoda Gosei Kk

Inventors

• Suzuki Takahiro
• Maeda Hideto
• Oba Tatsuya

Classifications

• H01Q1/3233 Primary

  particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title

• H05K5/02

  Details · CPC title

• G01S13/931

  of land vehicles · CPC title

• G01S2013/93274

  on the side of the vehicles · CPC title