JPH10190172A - Silk printing indication structure of printed wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed wiring board silk printing indication structure in which a type of electronic parts can be known only by viewing an indication part by silk printing, and which is superior in safety, economical and low-priced with good workability. SOLUTION: In a printed wiring board 1, there are receptively provided a indication part 4-1 by silk printing for discriminating a transformer 2-1 from electronic parts other than that; an indication part 4-2 by silk printing for discriminating a resistor 2-2 from electronic parts other than that; an indication part 4-3 by silk printing for discriminating an IC 2-3 from electronic parts which cannot be inserted by an automatic inserter; and indication parts 4-5, 4-6, 4-7, 4-8 by silk printing for discriminating a transistor 2-5 from a connector 2-5 and a switch 2-6 mounted after automatic soldering, and these display sections 4-1 to 4-8 by silk printing are discriminated by changing an indicating method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silk-screen display structure of a printed wiring board constituting an electronic device circuit.

[0002]

2. Description of the Related Art Various electronic components are mounted on a printed wiring board to form an electronic circuit, and the electronic components are connected in a pattern to ensure their functions. 2. Description of the Related Art In recent years, printed wiring boards have been mounted with a large number of components in a small area to realize more advanced functions due to their lightness and size.

For this reason, the number of patterns 3 for connecting these electronic components increases, and as shown in FIGS. 4 and 5, patterns 3-1 and 3-2 must be provided under non-insulated electronic components 2-1. On the other hand, if the patterns 3-1 and 3-2 are provided therebelow, the non-insulated electronic component 2-1 comes into contact with the patterns 3-1 and 3-2, thereby impairing the function of the circuit.

For this purpose, the non-insulated electronic component 2-1 is provided with an insulating paper 5 underneath to prevent the contact, or the non-insulated electronic component 2-1 is floated and attached to prevent the contact. Had occurred. Also, the heat-generating electronic component 2-2
Is mounted in a floating manner as shown in FIG. 5 in order to generate high heat from the characteristics of parts and to radiate the heat.

[0005] The electronic components mounted on the printed wiring board can be classified into automatic insertion electronic components, manually inserted electronic components, and retrofit electronic components according to assembly work steps. Automatic insertion electronic parts refer to electronic parts that are inserted by an automatic insertion machine, hand-inserted electronic parts refer to those that manually insert electronic parts that cannot be inserted by an automatic insertion machine, and retrofit electronic parts As shown in FIG. 3, an electronic component 2-5 whose component case is made of a material that is easy to melt, which melts due to the heat of the solder and becomes unusable (when passing through a solder bath, the solder is When the component case melts to rise to the front side of the printed wiring board 1, that is, just below the electronic component 2-5), and when passing through a solder bath for mounting on the end of the printed wiring board 1, Is an electronic component 2-6 that cannot be automatically soldered because the body has melted up from the end of the printed wiring board 1 or has hit the rail of the solder tank.

As described above, non-insulated electronic components, heat-generating electronic components, hand-inserted electronic components, and retrofit electronic components other than the automatically inserted electronic components are provided on the printed wiring board 1 by the operator while looking at the assembly drawings and assembly lists. It was mounted on a printed wiring board while checking and checking the position of the display unit 4 formed by printing.

As described above, when performing silk printing on the printed wiring board 1, the electronic components 2-1, 2-2, 2-3, and 2-2 mounted on the printed wiring board 1 are displayed as a display method.
-4, 2-5, 2-6, silk printing showing the display of the shapes of the electronic components 2-1, 2-2, 2-3, 2-4, 2-5, 2-6 mounted thereon. Of the electronic parts 2-1, 2-2, 2-3, and 2
-4, 2-5, and 2-6, these display units 4
Looking at the display, he confirmed the mounting position and shape.

[0008]

However, since the display units 4 of the electronic components 2-1, 2-2, 2-3, 2-4, 2-5, and 2-6 use the same display method, the non- Insulated electronic parts, automatic inserted electronic parts, manually inserted electronic parts, and retrofitted electronic parts cannot be distinguished. For this reason, in order for the operator to see and confirm the taping electronic component notation, floating mounting electronic component notation, and retrofit electronic component notation in the assembly drawing and assembly list,
There is a problem that it takes a lot of time and labor to perform the assembling work. In addition, only by looking at the display unit 4 of the printed wiring board 1 by silk printing, the non-insulated electronic components, the heat-generating electronic components, the automatic insertion There has been a problem that parts, hand-inserted electronic parts and retrofit electronic parts cannot be confirmed.

In the printed wiring board 1 on which the electronic components are mounted, when the power is turned on, the heat-generating electronic components generate high heat due to the characteristics of the components. Since it is not easy to determine whether the electronic component is a heat-generating electronic component, there is a problem that the user may accidentally touch the electronic component and get burned.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to determine the type of an electronic component only by looking at a display unit by silk printing. Another object of the present invention is to provide an economical and inexpensive printed wiring board silk-printed display structure which excels in safety and has good workability.

[0011]

In order to achieve the above object, according to the present invention, there is provided a printed wiring board silk-printed display structure, comprising: The non-insulated electronic component having the jacket configured as described above is distinguished from electronic components other than the non-insulated electronic component by a display method using a silk-screen display unit.

With this configuration, it is possible to visually distinguish a display portion of a non-insulated electronic component by silk printing from a display portion of an electronic component other than the non-insulated electronic component. For this reason, when the worker looks at the assembly drawing and assembly list and receives a floating mounting instruction or an insulating paper mounting instruction,
The mounting position on the printed wiring board can be easily understood.

As described above, it is possible to judge whether the electronic component is a non-insulated electronic component or an electronic component other than the non-insulated electronic component just by looking at the display portion of the printed wiring board by the silk printing, thereby improving workability. It is possible to effectively and economically supply an inexpensive printed wiring board silk print display.

According to another aspect of the present invention, there is provided a printed wiring board silk print display structure according to the second aspect of the present invention, wherein high heat is generated from a component characteristic in a printed wiring board in which electronic components are connected in a pattern. The heat-generating electronic components to be produced are distinguished from electronic components other than the heat-generating electronic components by a display method using a silk-screen display unit.

With this configuration, it is possible to visually distinguish a display portion of the heat-generating electronic component by silk printing from a display portion of an electronic component other than the heat-generating electronic component. For this,
This eliminates the need for the operator to check the assembly drawing and the assembly list while checking and assembling, and to save time and effort. In addition, you can check the heat-generating electronic components just by looking at the display section of the printed wiring board, and there is the danger of getting burned by touching the heat-generating electronic components that generate high heat when the power is turned on. Disappears.

As described above, it is possible to determine whether the electronic component is a heat-generating electronic component or an electronic component other than the heat-generating electronic component just by looking at the display portion of the printed wiring board by silk printing.
It is possible to provide an economical and inexpensive silk-screen display of a printed wiring board with good workability, excellent safety, and effectively.

According to another aspect of the present invention, there is provided a printed wiring board silk print display structure according to the third aspect of the present invention, wherein a printed wiring board in which electronic components are connected in a pattern is printed by an automatic insertion machine. Automatic insertion electronic components to be inserted into the wiring board, electronic components that cannot be inserted by the automatic insertion machine, manually inserted electronic components to be manually inserted into the printed wiring board, and retrofit electronic components to be mounted after automatic soldering, It is characterized in that the display method is changed by a silk-screen display unit for each assembling work process so as to be distinguished.

With this configuration, it is possible to visually distinguish the display unit of the automatically inserted electronic component by silk printing, the display unit of the manually inserted electronic component by silk printing, and the display unit of the retrofitted electronic component by silk printing. It becomes possible. For this reason, the assembling operator can confirm the mounting electronic components in each process only by looking at the silk-printed display portion of the printed wiring board without having to look at the assembly drawings and the assembly list each time. .

As described above, it is possible to judge whether an electronic component is an automatically inserted electronic component, a manually inserted electronic component, or a retrofitted electronic component just by looking at the display portion of the printed wiring board by the silk printing. Good, economical and inexpensive printed wiring board silk printed display can be provided.

According to another aspect of the present invention, there is provided a printed wiring board silk-printed display structure according to a fourth aspect of the present invention, wherein a non-insulated electronic component is mounted on a printed wiring board in which each of the electronic components is connected in a pattern. A display unit by silk printing to distinguish electronic components other than non-insulated electronic components, a display unit by silk printing to distinguish heat-generating electronic components from electronic components other than the heat-generating electronic components, and an automatic insertion electronic component are inserted by an automatic insertion machine. Display part by silk printing to distinguish from electronic components that cannot be provided, and display part by silk printing to distinguish from a post-installation electronic component that is mounted after automatic soldering of a manually inserted electronic component, and by changing the display method of these display parts It is characterized by being distinguished.

With this configuration, it is determined whether the electronic part is a non-insulated electronic part, a heat-generating electronic part, an automatic inserted electronic part, a hand-inserted electronic part, or a retrofitted electronic part just by looking at the display part by silk printing. Can be determined.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a printed wiring board structure having a silk print display structure according to the present invention, and FIG. 2 is a flowchart of a manufacturing process of the printed wiring board structure. The same components as those of the above-described conventional printed wiring board structure are denoted by the same reference numerals.

As shown in FIG. 1, a printed wiring board 1 includes a transformer 2-1 which is a non-insulated electronic component, a resistor 2-2 which is a heat-generating electronic component, and an IC which is an automatically inserted electronic component.
2-3 and a transistor 2-4 which is a manually inserted electronic component
And a connector 2-5 and a switch 2 which are retrofit electronic components.
-6, etc. are mounted, and each of the electronic components 2-1 and 2
-2, 2-3, 2-4, 2-5, 2-6 are connected by patterns 3, 3-1, 3-2 to form a circuit function.

The printed wiring board 1 has display portions 4-1, 4-2, 4-4 of electronic components 2-1, 2-2, 2-3, 2-4, 2-5, 2-6. 3, 4-4 and 4-5 are the electronic components 2-1, 2-2, 2-3, 2-4, 2-5 and 2-
6 is displayed by silk printing at the position where it is arranged.

In this case, the display unit 4-1 of the transformer 2-1 which is a non-insulated electronic component has a line slightly larger than the projection frame of the outer shape of the transformer 2-1 and another line about 1 mm outside the line. Lines are inserted to perform double-line silk printing, and the entire area between the two lines is displayed by silk-screen printing.

The display section 4-2 of the resistor 2-2, which is a heat-generating electronic component, is a line slightly larger than the projected frame of the outer shape of the resistor 2-2, and another line is disposed about 1 mm outside the line. The double-lined silk-screen display is shown.

Also, IC2-3 which is an electronic component for automatic insertion
Is a silk-screen display of one line slightly larger than the projection frame of the outer shape of the IC 2-3. The display portion 4-4 of the transistor 2-4, which is a manually inserted electronic component, includes a line slightly larger than the projected frame of the outer shape of the transistor 2-4 and another line approximately 1 mm outside the line. A double-line silk-printed display is used, and the upper half between the two lines is displayed in a flat pattern by silk printing.

Also, a connector 2- which is a retrofit electronic component
5 and the display section 4-5 of the switch 2-6 are connected to the connector 2-5.
-5, a line that is slightly larger than the projected frame of the outer shape of the switch 2-6 and another line about 1 mm outside of it are displayed as a double-line silk-screen display, and the lower side between the two lines The display is shown in which half of the area is painted in a flat pattern by silk printing.

As described above, each of the electronic components 2-1 and 2-
Even if 2, 2-3, 2-4, 2-5, and 2-6 are mounted, the display units 4-1, 4-2, 4-3, 4-4, and 4-5 can be confirmed. ing. In addition, in the display unit for each assembly process, the display unit of IC2-3, which is an automatically inserted electronic component, is denoted by A, as in 4-6, and the display unit of transistor 2-4, which is a manually inserted electronic component, is denoted by 4-7. Put characters B inside the display of the external shape of the component by silk printing, for example, by inserting B as shown in FIG. It is also possible to distinguish the assembly steps. Further, not only characters but also symbols or marks may be inserted to distinguish them. Alternatively, the colors may be distinguished by changing the color of the silk print.

FIG. 2 shows a manufacturing process of the printed wiring board 1. The manufacturing process of the printed wiring board 1 is divided into a printed wiring board manufacturing process and an assembly process.

In the manufacturing process of the printed wiring board 1, holes for mounting electronic components on the copper-clad laminate are made (step S).
1, step S2), and then through an etching step of forming a pattern by pattern printing or photographic exposure to form a pattern (step S3) and removing excess copper other than the pattern (step S4), Thereafter, a plating process is applied to the perforated portion to form a through hole (step S5), and a resist is applied to prevent the solder from being unnecessarily attached in the soldering process (step S6). Silk printing is performed to display the proper product name (Step S7), the outer shape is formed (Step S8), and after the appearance and the connection state of the pattern are confirmed (Step S9), the surface is subjected to rust prevention treatment (Step S10). The printed wiring board 1 is configured.

In the assembling process, the printed wiring board 1
Automatically insert electronic components into the device (step S11),
A manually inserted electronic component is inserted (Step S12), an automatic soldering is performed (Step S13), a retrofit electronic component is attached (Step S14), and a PCB for an electronic device is manufactured through an inspection (Step S15) (Step S15). S1
6).

A display unit 4-1 for non-insulated electronic components, a display unit 4-2 for heat-generating electronic components, and a display unit 4- for automatically inserted electronic components
3. The display unit 4-4 of the manually inserted electronic component and the display unit 4-5 of the retrofitted electronic component are performed in the silk printing step of displaying the component mounting position and the required product name in step S7.

The transformer 2 which is a non-insulated electronic component
-1 is mounted on the display unit 4-1 of the non-insulated electronic component. In this case, the non-insulated electronic component display unit 4-1 is
Since it is slightly larger than the outer shape of the transformer 2-1 and has a display method different from that of the display part of the electronic component other than the non-insulated electronic component, the non-insulated electronic component is mounted even after the transformer 2-1 is mounted. The component display section 4-1 can be visually confirmed.

The resistor 2-2, which is a heat-generating electronic component,
It is mounted on the display section 4-2 of the heat-generating electronic component.
In this case, the heat-generating electronic component display portion 4-2 is slightly larger than the outer shape of the resistor 2-2, and has a display method different from that of the display portion of electronic components other than the heat-generating electronic component. Even after 2-2 is mounted, the heat-generating electronic component display section 4-2 can be visually confirmed.

Also, IC2-3, which is an automatic insertion electronic component,
Is mounted on the display section 4-3 of the automatically inserted electronic component. In this case, the automatic insertion electronic component display unit 4-4
Since it is slightly larger than the outer shape of the IC 2-3 and has a display method different from that of the display part of the electronic component other than the automatic insertion electronic component, even after the automatic insertion electronic component IC 2-3 is mounted, the automatic operation is performed. The inserted electronic component display section 4-3 can be visually confirmed.

The transistor 2-4, which is a manually inserted electronic component, is mounted on the display section 4-4 of the manually inserted electronic component. In this case, the manually inserted electronic component display section 4-4
Is slightly larger than the outer shape of the transistor 2-4 and has a display method different from that of the display part of the electronic component other than the manually inserted electronic component. The inserted electronic component display section 4-4 can be visually confirmed.

The transistor 2-4, which is a manually inserted electronic component, is mounted on the display unit 4-4 of the manually inserted electronic component. In this case, the automatically inserted electronic component display section 4-4
Is slightly larger than the outer shape of the transistor 2-4, and has a display method different from that of the display of electronic components other than the manually inserted electronic component. The inserted electronic component display section 4-4 can be visually confirmed.

Further, a connector 2-
5, the switch 2-6 is a display unit 4 for electronic components to be attached later.
It is implemented in the part of -5. In this case, the retrofit electronic component display section 4-5 is slightly larger than the external shape of the connector 2-5 and the switch 2-6, and has a display method different from that of the display section of the electronic component other than the retrofit electronic component. To be
Even after the connector 2-5 and the switch 2-6 are mounted, the retrofit electronic component display section 4-5 can be visually confirmed.

As described above, the non-insulated electronic component (transformer 2-1), the heat-generating electronic component (resistance 2-2), the automatic insertion electronic component (IC2-3), and the manually inserted electronic component (transistor 2-) 4) and retrofit electronic components (connectors 2-5,
By changing the display method of the display unit by the silk printing with the switch 2-6), each electronic component can be distinguished.

For this reason, even if the worker does not look at the assembly drawing or the assembly list, only by looking at the silk-printed display portion of the printed wiring board, this part must be floated and mounted. This makes it possible to determine in which assembly process the component is to be mounted, and the like, and it is possible to save time and labor for checking those components.

[0042]

As described above, according to the silk printed display of the printed wiring board according to the first aspect of the present invention, the non-insulated electronic components of the printed wiring board in which each of the electronic components is connected in a pattern are displayed by silk printing. The display part by silk printing of non-insulated electronic components is distinguished from the display part by silk printing of electronic components other than non-insulated electronic components. It is possible to visually distinguish the display from the display of the electronic component.

For this reason, when the worker sees the assembly drawing and the assembly list and receives a floating mounting instruction or an insulating paper mounting instruction, the mounting position on the printed wiring board can be easily understood. In this way, it is possible to determine whether the electronic component is a non-insulated electronic component or an electronic component other than the non-insulated electronic component just by looking at the display portion of the printed wiring board by the silk printing, and it is possible to determine a good workability and an effective Can provide an economical and inexpensive printed wiring board silk printed display.

Further, according to the silk printed display of the printed wiring board according to the second aspect of the present invention, the display portion of the printed wiring board, in which the electronic components are connected in a pattern by silk printing, is formed of a material other than the heated electronic components. The display part of the heat-generating electronic component can be visually distinguished from the display part of the electronic component other than the heat-generating electronic component by distinguishing the display part of the electronic part of the electronic component from the silk-printed part by changing the display method. Can be distinguished.

For this reason, it is not necessary for the worker to float and mount while looking at the assembly drawing and the assembly list, and the labor can be saved. Moreover, since the heat-generating electronic components can be checked only by looking at the display on the printed wiring board, there is no danger of being burned by touching the heat-generating electronic components that generate high heat when the power is turned on. . In this way, it was possible to determine whether the electronic component was a heat-generating electronic component or an electronic component other than the heat-generating electronic component just by looking at the silk-screen printing of the printed wiring board. It is possible to effectively and economically supply an inexpensive printed wiring board silk print display.

According to the silk-screen display of the printed wiring board according to the third aspect of the present invention, an electronic component automatically inserted into the printed wiring board in which each of the electronic components is connected by a pattern, a manually inserted electronic component, and a retrofitted electronic component In the display part by silk printing for each assembly work process, the display method is distinguished by changing the display method, so that the display part by silk printing of electronic parts automatically inserted and the display by silk printing of electronic parts manually inserted The display unit and the display unit of the post-installed electronic component by silk printing can be easily distinguished visually.

For this reason, the operator does not need to look at the assembly drawings and the assembly list each time for the parts to be attached in each process.
It can be confirmed simply by looking at the display portion of the printed wiring board by silk printing. In this way, it is possible to determine whether an electronic component is an automatically inserted electronic component, a manually inserted electronic component, or a retrofit electronic component just by looking at the display portion of the printed wiring board by silk printing, and has good workability. It is possible to effectively provide an economical and inexpensive printed wiring board silk printed display.

According to the printed wiring board silk print display structure of the fourth aspect of the present invention, in the printed wiring board in which each of the electronic components is connected in a pattern, the non-insulated electronic components are replaced with electronic components other than the non-insulated electronic components. A display unit by silk printing for distinguishing from the component, a display unit by silk printing for distinguishing the heat-generating electronic component from the electronic components other than the heat-generating electronic component, and a silk for distinguishing the automatic insertion electronic component from the electronic component that cannot be inserted by the automatic insertion machine. By providing a display unit by printing, a display unit by silk printing to distinguish from a later-attached electronic component that is mounted after automatic soldering of the hand-inserted electronic component, by making these display units distinguish by changing the display method Just looking at the display part by silk printing, whether it is a non-insulated electronic component, a heating electronic component, an automatic insertion electronic component, Or parts of the can to determine retrofit of electronic components.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a printed wiring board structure having a silk-screen display structure according to the present invention.

FIG. 2 is a flowchart of a manufacturing process of the printed wiring board.

FIG. 3 is an exploded perspective view of a conventional printed wiring board structure having a silk print display structure.

FIG. 4 is an exploded perspective view illustrating mounting of non-insulated electronic components and heat-generating electronic components in the printed wiring board structure.

FIG. 5 is a side view of the printed wiring board structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed wiring board 2-1 Transformer (non-insulated electronic component) 2-2 Resistance (heating electronic component) 2-3 IC (automatic insertion electronic component) 2-4 Transistor (manual insertion electronic component) 2-5 Connector (retrofit electronic) Parts) 2-6 Switches (post-installed electronic components) 3 Conductor patterns 3-1 Conductor patterns 3-2 Conductor patterns 4-1 Silk printed display section of non-insulated electronic components 4-2 Silk printed display section of heat generating electronic components 4-3 4-4 Silk-printed display section of electronic components for automatic insertion 4-4 Silk-printed display section of electronic components for manual insertion 4-5 Silk-printed display section for electronic components 4-6 4-8 Silk Print Display of Parts 4-8 Silk Print Display of Retrofit Electronic Components

Claims (4)

[Claims] 1. A printed wiring board in which each of electronic components is connected by a pattern, a non-insulated electronic component having a jacket made of a conductive material is displayed by silk printing with an electronic component other than the non-insulated electronic component. A silk-screen display structure of a printed wiring board, wherein the display method is distinguished by a different display method. 2. A printed wiring board in which electronic components are connected by a pattern, wherein a heat-generating electronic component that generates high heat from component characteristics is displayed on an electronic component other than the heat-generating electronic component on a display unit by silk printing. A silk-screen display structure of a printed wiring board, characterized in that the printed circuit board is distinguished from each other. 3. A printed wiring board in which electronic components are connected in a pattern, wherein an automatic insertion electronic component to be inserted into the printed wiring board by an automatic insertion machine and an electronic component that cannot be inserted by the automatic insertion machine are printed. The electronic parts to be inserted manually by hand and the electronic parts to be mounted after automatic soldering are distinguished from each other by changing the display method on the display unit by silk printing for each assembly work process. Silk printed display structure of printed wiring board. 4. A printed wiring board in which each of electronic components is connected by a pattern, a display unit by silk printing for distinguishing non-insulated electronic components from electronic components other than the non-insulated electronic components, and a heat-generating electronic component by the heat-generating electronic component. Display part by silk printing that distinguishes electronic components other than components, display part by silk printing that distinguishes electronic components that cannot be inserted automatically with electronic components that cannot be inserted by an automatic insertion machine, and retrofitting that mounts electronic components that are manually inserted after automatic soldering A silk-printed display structure for a printed wiring board, comprising: a display section by silk printing for distinguishing from an electronic component; and wherein the display sections are distinguished by changing a display method.