JPH04307990A - Setting method for height of mounting component to printed board and setting tool thereof - Google Patents

Abstract

PURPOSE:To provide a setting method and its setting tool in which a mounting height can be varied, which has high seating stability and low cost. CONSTITUTION:In a method for engaging a threaded member 3 with a pedestal 1 laid under a component 9, and adjusting a height of its exposed part so that its laying height is adjustable, a pedestal 1 of an electric insulator in which a plurality of threaded holes 2 each having a predetermined thickness and passing through a thickness direction are opened in parallel at a mounting interval of leads 91 of the component 9, and a threaded member 3 engaged with each hole 2, having a length equal to or smaller than the thickness of the pedestal 1, hollow part in which the leads 91 are passed and rotating means buried at the end, are provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height setting method and tool for mounting a component on a printed board. BACKGROUND ART In electronic devices mounted on printed circuit boards, the surface of the device is provided with a display section for displaying operating status, alarms, etc., and operating parts such as switches and connection links are arranged, and these parts come in many different shapes.

On the other hand, since the structure of a printed circuit board package is unified and standardized, the mounting of these components must be solved individually, and it is desired to be as simple and common as possible.

0003

2. Description of the Related Art FIG. 4 shows conventional parts mounting height setting tools, in which (a) is a pedestal type and (b) is a spacer type.

[0004] Generally, in order to mount display or operation parts on the surface of a printed board package, a printed board is attached inside parallel to the surface, and the parts are mounted on the printed board. In the case of a light-emitting component, if the distance between the surface portion and the head of the light-emitting component is not adjusted accurately, problems such as an excess or deficiency in the amount of light or illumination leaking to adjacent areas will occur.

[0005] Since there are many types of shapes of the parts, it is difficult to change the package structure for each mounting height, and it is difficult to mount multiple types at the same time. The structure is unified according to the maximum mounting height, and the smaller mounting height is raised to match the height.

A conventional example of setting the mounting height of this component is as follows:
As shown in FIG. 4, the pedestal type shown in (a) and the spaced tube type shown in (b) are often used. The pedestal type shown in (a) has an insulator of a predetermined height that matches the mounting height of the component 9, and a pedestal 15 with a through hole 6 through which the lead wire 91 is passed is placed under the component 2 to raise the height. and mounted on the printed board 8.

In the spacing tube type shown in (b), a spacing tube 4 made of an insulating material with a predetermined length corresponding to the mounting height of the component 9 is passed through each lead wire 91 of the component 2 and raised, and then attached to the printed board 8. Have it implemented.

[0008]

[Problem to be solved by the invention] However, ■ (
With the pedestal type a), part 2 can sit stably, but it is set at a fixed height and cannot be adjusted, so many types must be prepared for different heights, and furthermore, the dimensions difference 1mm
The following may be used incorrectly. ■ For the spacing tube type shown in (b), if all the lengths are the same and the end faces are not vertical, the dimensions will be incorrect during installation, or the part 2 will be fixed at an angle. It also becomes unstable. Furthermore, like the above-mentioned pedestal type, the height is fixed, so many types must be prepared. but,
Since it can be cut or cut into short lengths, the number of types can be reduced. There were problems such as.

SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a mounting height setting method and a setting tool therefor, which allows the mounting height to be varied, provides good seating stability, and is inexpensive.

0010

[Means for solving the problem] The above purpose is as shown in Figures 1 and 2.
As shown, ■ Screw members 3, 3 are attached to the pedestals 1, 11 placed under the component 9.
3 are screwed together and the height of the exposed portion thereof is adjusted, thereby making it possible to freely adjust the laying height. ■ As a setting tool, a plurality of screw holes 2 having a predetermined thickness and penetrating in the thickness direction are connected to the lead wire 91 of the component 9.
A pedestal 1 made of electrical insulating material is bored parallel to the mounting arrangement interval of , and is screwed into each of the screw holes 2, and the inside is made hollow with a length equal to or less than the thickness of the pedestal 1, through which the lead wire 91 passes, and the end This is achieved by the height setting tool 5 for mounting a printed board component of the first invention, which comprises a screw member 3 equipped with a rotation means that can be embedded in the part. ■ Also, it has a predetermined thickness and has multiple grooves 7 in the thickness direction.
Alternatively, a through hole is provided parallel to the mounting arrangement interval of the lead wires 91 of the component 9, and at least one screw hole 2 also passes through the lead wire 91 of the component 9.
2, and a screw member 33 that is screwed into each of the screw holes 22, has a length equal to or less than the thickness of the pedestal 11, and is equipped with a rotating means that can be buried in the end. ,
It can also be applied to the height setting tool 55 for mounting a component on a printed board according to the second invention.

[0011]

[Operation] That is, the setting tools 5, 55 are set on the pedestal 1 at a constant height,
11, and screw members 3 and 33 that become a variable spacer by screwing together.
This is placed under the component 9 and printed board 8
Since the height is screwed and adjusted to a predetermined height, the screw pitch can be adjusted continuously with high precision, and the variable usage area is 1.5 to 1.8 times the thickness of the pedestals 1 and 11. It can be commonly used for heights within that range, can be molded, and can reduce the number of types, eliminate handling management, replacement work due to incorrect use, etc., and can reduce costs overall.

In the setting tool 5 of the first invention, the lead wire 91 of the component 9 is passed through the inside of the screw member 3 screwed into the base 1. Therefore, the screw member 3 is much thicker than the lead wire 91. Since the diameter is the same, the component 9 will sit in a sufficiently good condition.

In the setting tool 55 of the second invention, the screw member 33 screwed into the pedestal 11 is used exclusively for the spacer, so the component 9
All you have to do is increase the size or number of seats. The lead wire 91 of the component 9 is easily inserted into the printed board 8 through the groove 7 or the through hole.

In both cases, the pedestals 1 and 11 are made of electrically insulating material, so it is safe to pass the lead wire 91 through them. The screw members 3 and 33 may be made of an insulating material, but may also be made of a metal material as long as there is no risk of contact due to the arrangement of the plurality of screw members.

[0015] Thus, it is possible to provide a mounting height setting method and setting tool that allows the mounting height to be varied, provides good seating stability, and is inexpensive.

[0016]

EXAMPLES The present invention will be specifically explained below with reference to examples shown in the drawings. The same reference numerals indicate the same objects throughout the figures. FIG. 1 shows an embodiment of the first invention, (a) is a perspective view, (b) is a cross-sectional view of mounting, and FIG. 2 shows an embodiment of the second invention, (a) is a perspective view, (b) ) shows a sectional view of the mounting, and FIG. 3 shows a perspective view of another embodiment of the second invention.

[0017] In each of the embodiments, an LED for light emitting display is used.
As shown in Figure 1 (b), two parts were removed from the flat bottom of the package for part 9.
Lead wires 91 with a diameter of 0.3 mm are drawn out at intervals of 2.54 mm, and a lens is provided on the head to spread the light beam in a predetermined direction for illumination. Therefore, unless the position and orientation of the head on the back side of the top plate are fixed with high precision, problems will occur.

The structure of a printed board package in which such a component 9 is mounted is such that a printed board 8 is fixed parallel to the surface plate at a constant interval, and parts 9 of various shapes are raised to a predetermined height on this printed board 8. and is implementing it.

An embodiment of the first invention is as shown in FIG. 1(b), and the setting tool 5 consists of a pedestal 1 and a screw member 3 screwed into the pedestal 1. Pedestal 1 is made of ABS resin 4.5 x 4
．． 5 x 10 mm thick, with two M1.6 screw holes 2 drilled through the center at 2.54 mm intervals.

[0020] The screw member 3 has a screw hole A that is screwed into the screw hole 2.
It is a threaded pipe made of BS resin with an inner diameter of 0.8φ and a length of 10mm, and the end face is provided with a splitter as a rotating means for applying a screwdriver, so that the threaded member 3 is completely buried in the pedestal 1. Can be screwed together.

As shown in the mounted state in FIG. 1(a), this setting tool 5 can increase the height of 10 to 17 mm, and can be commonly used for most parts 9. An embodiment of the second invention is as shown in FIG. 2(b), in which the setting tool 55
consists of a pedestal 11 and a screw member 33 screwed into the pedestal 11.

[0022] The pedestal 11 is made of ABS resin and is made of 4.5 x 4.
5 x 10 mm thick, with an M 1.0 screw hole 22 in the center, and a 0.8 x width hole on the opposite side.
A U-shaped groove 7 with a depth of 14 mm is provided facing the center, and a round hole 23 in which the head of an M1.0 screw member 33 is embedded is bored in one end surface.

The screw member 33 is an ABS resin male screw having a head with a length of 10 mm that is screwed into the screw hole 22, and is provided with a turning means for applying a screwdriver to the head, and the head is attached to the end surface of the pedestal 22. The screw member 3 can be buried in the round hole 23 of
3 can be screwed into the base 11 until it is completely buried.

As shown in the mounted state in FIG. 2(a), this setting tool 55 can raise the height by 10 to 16 mm, and can be commonly used for most parts 9. As another embodiment of the second invention, as shown in FIG. However, in the present pedestal 12, a partially covered hole-shaped portion 71 is formed at a position approximately 0.8 mm higher than the lower end.

This is because the lead wire 91 is suppressed and the 2
．． It is easier to insert the lead wires 91 into the printed board 8 at intervals of 5 mm, and when surface mounting the component 9 on the printed board 8, the lead wires 91 are passed through the holes 71 and then bent outward while being pulled. , the lead wire 91 is molded into a surface mount type.

The above embodiments are merely examples, and the shapes, dimensions, and materials of each part are not limited to those described above. In the setting tool of the second invention, the pedestals 11, 12
Although the housing portions for the lead wires 91 are all formed as grooves 7, they may be formed as through holes.

[0027]Although the above embodiment has been shown for a two-terminal part of an LED, in the case of a multi-terminal part, screw holes 2, grooves 7, or through holes can be arranged according to the number and arrangement of lead wires. However, depending on the part, it may be possible to mount it by using a plurality of the setting tools of the above embodiments.

[0028]

[Effects of the Invention] As described above, by using the setting method and setting tool of the present invention, it is possible to finely vary the mounting height of a component on a printed board, the mounting stability of the component is good, it is possible to securely fix the component, and furthermore, it can be commonly used. Since it is possible to reduce costs through mass production, it becomes inexpensive, and its practical effects are great.

[Brief explanation of drawings]

[Figure 1] An embodiment of the first invention (a) Perspective view (b) Implementation sectional view

[
Figure 2: An embodiment of the second invention (a) Perspective view (b) Implementation sectional view

[
FIG. 3 A perspective view of another embodiment of the second invention

[Figure 4]
Conventional component mounting height setting tool (a) Pedestal type
(b) Spaced tube type

[Explanation of symbols]

1, 11, 12, 15 Pedestal 5
, 55 Setting tool 9 Parts 2, 22 Screw hole 6
Through hole 23 Round hole 3, 33 Screw member 7
Groove 71 Hole 4 Spacer tube 8
Printed board 91 Lead wire

Claims (3)

[Claims] [Claim 1] Pedestal (1) placed under component (9)
A method for setting the mounting height of a printed board for a component, characterized in that the mounting height of the printed board can be adjusted by screwing a screw member (3) into the screw member and adjusting the height of the exposed part thereof. 2. A plurality of screw holes (2) having a predetermined thickness and penetrating in the thickness direction are connected to the lead wire (
A pedestal (1) of electrical insulating material bored parallel to the mounting arrangement spacing of 91) is screwed into each of the screw holes (2), and the inside is screwed into the pedestal (1) with a length equal to or less than the thickness of the pedestal (1). Lead(
91) A screw member (3) having a hollow space through which the screw member (3) can be inserted, and a screw member (3) having a rotating means that can be buried in the end thereof. 3. A component (9) having a predetermined thickness and having a plurality of grooves (7) or through holes in the thickness direction.
A pedestal (11) of an electrically insulating material is provided parallel to the mounting arrangement interval of 91) and has at least one screw hole (22) penetrating through the thickness direction, and is screwed into each screw hole (22),
A height setting tool for mounting a component on a printed board, characterized by comprising a screw member (33) having a length equal to or less than the thickness of the base (11) and having a rotating means that can be sunk into the end thereof.