JPH02230787A - Printed wiring board - Google Patents

Abstract

PURPOSE:To easily enable sectioning and separating along a specified outer- shape-process-line in the case of cutting-OFF by bending, by forming a v-shaped groove along the outer-shape-process-line in a printed wiring board main region, which groove interposes between router slits and combines temporarily the wiring board main region and the outer-shape-process-region. CONSTITUTION:Along an outer-shape-process-line 3a between a printed wiring board main region 3 and a non-circuit-forming region 4, the cutting edge of a punch blade for forming a v-shaped groove 2a is made to abut and pressed, thereby forming a specified v-shaped groove 2a. Along the outer-shape- process-line 3a, the cutting edge of a punch blade for forming a router slit 1 is made to abut on a specified position and pressed, and a specified router slit 1 is formed by punching process using a metal mold press. Hence, in the case of separating by bending, easy sectioning and separating along the specified outer-shape-process-line are enabled.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a printed wiring board, and particularly to a router slit and The present invention relates to an improvement of a printed wiring board having a V-groove.

(Prior Art) As is well known, printed wiring boards have non-circuits formed around them for the purpose of holding (supporting) and positioning the printed wiring board during the manufacturing process and the mounting process of electronic components on the printed wiring board. It has a department. After this non-circuit forming part has fulfilled its role as described above, it is separated from the main body area of the printed wiring board (outline processing). Moreover, this separation of the printed wiring board main body region is often performed in the manufacturing process of multi-sided printed wiring boards.

By the way, in order to relatively easily separate the main body region of the printed wiring board, router slits 1 and perforations 2 are formed in predetermined partitions, as shown in plan in FIG. 3, for example. .

In other words, the router slit 1 and the perforation 2 are formed in advance in the portion 5 where the printed wiring board body area 3 is separated from the printed wiring board body area 3 or the printed wiring board body area 3 and the non-circuit forming portion 4 by performing the required external processing. This portion 5 can be easily separated by bending, etc., so that required external processing can be performed.

(Problems to be Solved by the Invention) However, the above printed wiring board has the following disadvantages. That is, when the separation portion 5 (router slit 1 and perforation 2 forming portion) is bent and separated for external processing or separation, the separation surface of the perforation 2 forming portion becomes uneven. In other words, there is a problem that the part cannot be cut linearly along the line to be processed, and the part where the second perforation is formed is uneven, resulting in a loss of dimensional accuracy. As a means to avoid unevenness at the part where the perforation 2 is formed, it is also known to form a groove in the cut-off part 5. is ■
It is difficult to form grooves and is therefore difficult to apply.

[Structure of the Invention] (Means for Solving the Problems) The present invention has been made in response to the above-mentioned circumstances, and is designed to separate the printed wiring board main body area from the area to be processed into external shapes, which is disposed around the printed wiring board main body area. In the printed wiring board having a router slit and a V-groove, the V-groove is formed at least along a line to be processed in the outer shape of the main body region of the printed wiring board.

(Function) According to the present invention, at least the V-groove, which is interposed between the router slits and serves to temporarily connect and integrate the wiring board main body region and the region to be externally processed, is formed on the printed wiring board main body region. They are each formed along the outer processing line. Therefore, for example, when cut by bending, it can be easily partitioned along a predetermined outline processing line. Separate.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows a printed wiring board according to the present invention in plan view, and FIG. 2 shows a cross-sectional view along the line A-A in FIG. Reference numeral 4 denotes an area to be processed for external shape or a non-circuit forming area, which is arranged around the main body area 3 of the printed wiring board. Further, reference numeral 5 denotes a separation portion consisting of a router slit 1 and a V-groove 2a for partitioning and separating the printed wiring board main body region 3 and the region 4 to be processed into external shapes. Thus, the grooves 2a are formed at least along the contour processing line 3a of the printed wiring board main body region 3. That is, when the periphery of the printed wiring board main body region 3 is a non-circuit forming region 4, a single V is formed between the router slits along the contour processing line 3a of the printed wiring board main body region 3.
If the groove 2a is formed on one side or both sides, or if the printed wiring board main body area 3 is formed on multiple sides, two strips are formed between the router slits along the contour processing line 3a of the printed wiring board main body area 3. The V-groove 2a is provided on one side and on both sides.

Note that the printed wiring board having the above configuration can be manufactured, for example, as follows. That is, after forming the required circuit pattern, the line to be processed is formed between the printed wiring board main body regions 3 having the required circuit pattern, or between the printed wiring board main body region 3 and the non-circuit forming region 4. 3a, the cutting edge of a punch blade for forming the V-groove 2a is brought into contact with the predetermined position and pressurized to form the predetermined V-groove 2a.
Similarly, along the contour processing line 3a, the cutting edge of a punch blade for forming the router slit 1 is brought into contact with a predetermined position, and punching is performed using a mold press to form a predetermined router slit 1, thereby easily manufacturing. can.

[Effects of the Invention] In a printed wiring board having a router slit and a V-groove for partitioning and separating a region to be processed into an external shape disposed around a main body region of the printed wiring board, the V-groove is formed at least in the printed wiring board. They are formed along the contour line of the main body area. In other words, the V-groove, which is interposed between the router slits forming a part of the section separation part and serves to connect the wiring board main body area and the area to be processed and temporarily maintain the integrity, is at least in the printed wiring board main body area. They are each formed along the contour line to be machined. For this reason, for example, when cutting by bending, it becomes possible to partition and separate easily and linearly along a predetermined outline processing line. In other words, the printed wiring board is always cut into pieces with good dimensional accuracy (straight lines) with no unevenness in the section separation area. Can be separated.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the configuration of a printed wiring board according to the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is an example of the configuration of a conventional printed wiring board. FIG. 1... Router slit 2a... V groove 3... Printed wiring board main body area 4... Outer shape processing area 5... Separated portion Applicant Toshiba Corporation Agent Patent attorney Saichi Suyama

Claims (1)

[Scope of Claims] A printed wiring board main body region, a region to be processed for contouring arranged around the printed wiring board main body region, and a section and separation between the printed wiring board main body region and the region to be processed for external shape. 1. A printed wiring board, comprising a router slit and a V-groove, the V-grooves being formed at least along contour processing lines in a main body region of the printed wiring board.