US-12628280-B2 - Assembly sheet

Abstract

An assembly sheet includes a supporting portion, a plurality of wiring circuit boards, and a joint portion. The supporting portion supports the plurality of wiring circuit boards. The supporting portion surrounds the plurality of wiring circuit boards while being separated from the plurality of wiring circuit boards by an interval. The joint portion joins the plurality of wiring circuit boards to the supporting portion. The plurality of wiring circuit boards includes a first wiring circuit board and a second wiring circuit board. The second wiring circuit board is arranged next to the first wiring circuit board while being separated from the first wiring circuit board by an interval. The second wiring circuit board is symmetrical to the first wiring circuit board with respect to a point centered therebetween. The supporting portion includes a first and second mark. The second mark is asymmetrical to the first with respect to the point.

Inventors

• Chihiro Watanabe
• Kenya TAKIMOTO

Assignees

• NITTO DENKO CORPORATION

Dates

Publication Date

20260512

Application Date

20240104

Priority Date

20230117

Claims (7)

1. 1 . An assembly sheet comprising: a plurality of wiring circuit boards; a supporting portion supporting the plurality of wiring circuit boards and surrounding the plurality of wiring circuit boards while being separated from the plurality of wiring circuit boards by an interval; and a joint portion joining the plurality of wiring circuit boards to the supporting portion, wherein the plurality of wiring circuit boards includes a first wiring circuit board and a second wiring circuit board arranged adjacent to the first wiring circuit board while being separated from the first wiring circuit board by an interval and being point symmetrical to the first wiring circuit board with respect to a point located between the first wiring circuit board and the second wiring circuit board as a point of symmetry, and wherein the supporting portion includes a first mark and a second mark being point asymmetrical to the first mark with respect to the point located as the point of symmetry.
2. 2 . The assembly sheet according to claim 1 , wherein the first mark is disposed in a one-side part of the supporting portion in an arrangement direction in which the first and second circuit boards are arranged, and wherein the second mark is disposed in the one-side part of the supporting portion in the arrangement direction.
3. 3 . The assembly sheet according to claim 1 , wherein the first mark is disposed in a one-side part of the supporting portion in an arrangement direction in which the first and second circuit boards are arranged, and wherein the second mark is disposed in the other-side part of the supporting portion in the arrangement direction.
4. 4 . The assembly sheet according to claim 1 , wherein the first wiring circuit board includes a first main body portion and a first protruding portion protruding from the first main body portion toward the second wiring circuit board, wherein the second wiring circuit board includes a second main body portion and a second protruding portion protruding from the second main body portion toward the first wiring circuit board, and wherein the first protruding portion and the second protruding portion are adjacent to each other in a direction intersecting with the thickness direction and an arrangement direction in which the first and second circuit boards are arranged.
5. 5 . The assembly sheet according to claim 1 , wherein the supporting portion includes a metal supporting layer, an insulating base layer, and a conductive layer in this order toward one side in the thickness direction, and wherein each of the first mark and the second mark includes a conductive mark included in the conductive layer.
6. 6 . The assembly sheet according to claim 1 , wherein the supporting portion includes a metal supporting layer, and wherein each of the first mark and the second mark includes a metal penetrating hole included in the metal supporting layer.
7. 7 . The assembly sheet according to claim 1 , wherein the supporting portion includes a metal supporting layer, and wherein each of the first mark and the second mark includes a barcode formed on a one-side surface or the other-side surface of the metal supporting layer in the thickness direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority from Japanese Patent Application No. 2023-5403 filed on Jan. 17, 2023, the contents of which are hereby incorporated by reference into this application. TECHNICAL FIELD The present invention relates to an assembly sheet. BACKGROUND ART There has been a known assembly sheet including a plurality of wiring circuit boards, a supporting portion, and a joint portion (for example, see Patent Document 1 below). In the assembly sheet described in Patent Document 1, the supporting portion supports the plurality of wiring circuit boards. The supporting portion surrounds the plurality of wiring circuit boards. The plurality of wiring circuit boards includes a first wiring circuit board and a second wiring circuit board. The second wiring circuit board is symmetrical to the first wiring circuit board with respect to a point centered therebetween. The supporting portion includes a first mark and a second mark. The second mark is symmetrical to the first mark with respect to the above-described point. Based on the differentiation between the first mark and the second mark, the first wiring circuit board and the second wiring circuit board are distinguished from each other. CITATION LIST Patent Document Patent Document 1: Japanese Unexamined Patent Publication No. 2010-258189 SUMMARY OF THE INVENTION Problem to be Solved by the Invention The assembly sheet may be rotated around the above-described point. In such a case, the second mark is point symmetrical to the first mark, and thus the first and second marks cannot be distinguished from each other. A disadvantage of the above is thus that the first wiring circuit board and the second wiring circuit board cannot surely be distinguished from each other. The present invention provides an assembly sheet of which first wiring circuit board and second wiring circuit board are faultlessly distinguished from each other. Means for Solving the Problem The present invention [1] includes an assembly sheet including: a plurality of wiring circuit boards; a supporting portion supporting the plurality of wiring circuit boards and surrounding the plurality of wiring circuit boards while being separated from the plurality of wiring circuit boards by an interval; and a joint portion joining the plurality of wiring circuit boards to the supporting portion, wherein the plurality of wiring circuit boards includes a first wiring circuit board and a second wiring circuit board arranged adjacent to the first wiring circuit board while being separated from the first wiring circuit board by an interval and being symmetrical to the first wiring circuit board with respect to a point centered therebetween, and wherein the supporting portion includes a first mark and a second mark being asymmetrical to the first mark with respect to the point. In the assembly sheet, the second mark is asymmetrical to the first mark with respect to the above-described point. Thus, even when the assembly sheet is rotated around the above-described point, the first mark and the second mark are distinguished from each other. As a result, based on the differentiation between the first mark and the second mark, the first wiring circuit board and the second wiring circuit board can faultlessly be distinguished from each other. The present invention [2] includes the assembly sheet described in the above-described [1], wherein the first mark is disposed in a one-side part of the supporting portion in an arrangement direction in which the first and second circuit boards are arranged, and wherein the second mark is disposed in the one-side part of the supporting portion in the arrangement direction. The present invention [3] includes the assembly sheet described in the above-described [1], wherein the first mark is disposed in a one-side part of the supporting portion in an arrangement direction in which the first and second circuit boards are arranged, and wherein the second mark is disposed in the other-side part of the supporting portion in the arrangement direction. The present invention [4] includes the assembly sheet described in any one of the above-described [1] to [3], wherein the first wiring circuit board includes a first main body portion and a first protruding portion protruding from the first main body portion toward the second wiring circuit board, wherein the second wiring circuit board includes a second main body portion and a second protruding portion protruding from the second main body portion toward the first wiring circuit board, and wherein the first protruding portion and the second protruding portion are adjacent to each other in a direction intersecting with the thickness direction and an arrangement direction in which the first and second circuit boards are arranged. In the assembly, the first protruding portion and the second protruding portion are next to each other in a direction intersecting with the thickness directio