JPH11354693A - Retainer for three-terminal transistor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily and surely retain a three-terminal transistor on a printed wiring board, regarding a retainer for a three-terminal transistor which retains a three-terminal transistor on a printed wiring board. SOLUTION: A penetrating part 13 for inserting the central terminal of a three-terminal transistor 19 is formed in the central part of a heat-resistant insulating plate material 11 having flexibility. On both sides in the length direction of the penetration part of the plate material 11, a first and a second penetrating parts 15, 17 are formed in slender shapes along the length wise direction. Both side terminals of the three-terminal transistor 19 can be inserted into the respective penetrating parts in a state such that both ends of the plate material 11 are bent in the direction opposite to the three-terminal transistor 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a support for a three-terminal transistor for supporting a three-terminal transistor on a printed wiring board.

[0002]

2. Description of the Related Art Conventionally, three-terminal transistors such as IC regulators have been widely used. This type of three-terminal transistor, unlike other electronic components such as ICs, is mounted in an upright state on a printed wiring board, and is thus difficult to stand on the printed wiring board.

For this reason, soldering of a three-terminal transistor is generally performed by using a special jig as shown below.
It is done manually. That is, first, as shown in FIG. 9, the heat-resistant masking tape 2 is attached to the through-hole 1 a for the three-terminal transistor and the through-hole 1 b for the jig formed in the printed wiring board 1 in advance.

Next, another electronic component 3 is mounted on the printed wiring board 1 and soldered. And the electronic component 3
Is completed, the masking tape 2 is peeled off. Next, as shown in FIG. 10, the fixing hole 4a of the three-terminal transistor 4 and the screw hole 5a of the positioning jig 5 are fixed by the screw member 6, and the three-terminal transistor 4 is fixed.
Is fixed to a predetermined position of the positioning jig 5.

Thereafter, as shown in FIG. 11, the terminal 4b of the three-terminal transistor 4 is inserted into the through hole 1a of the printed wiring board 1, and the positioning jig 5 is placed on the printed wiring board 1 together with the three-terminal transistor 4. It is placed at a predetermined position. Next, the screw hole 5b of the positioning jig 5 and the through hole 1b of the printed wiring board 1 are fixed by the screw member 7.

Then, in this state, the three-terminal transistor 4 is soldered to the printed wiring board 1. After this,
As shown in FIG. 12, the positioning jig 5 is removed from the printed wiring board 1, and the soldering operation of the three-terminal transistor 4 is completed.

[0007]

However, the soldering of the three-terminal transistor 4 to the printed wiring board 1 must be performed manually by using the positioning jig 5, so that the manufacturing process is complicated. Therefore, there is a problem that the manufacturing cost increases.

The present invention has been made to solve such a conventional problem, and can easily and surely support a three-terminal transistor on a printed wiring board.
An object of the present invention is to provide a terminal transistor support.

[0009]

According to a first aspect of the present invention, there is provided a support for a three-terminal transistor, wherein a penetrating portion through which a central terminal of the three-terminal transistor is inserted is formed at the center of a flexible heat-resistant insulating plate. A first and a second terminal which can be inserted through the terminals on both sides of the three-terminal transistor in a state in which both ends of the plate are curved to the opposite side to the three-terminal transistor on both sides in the longitudinal direction of the through portion of the plate. 2 is characterized in that the insertion portion is formed in an elongated shape along the longitudinal direction.

According to a second aspect of the present invention, there is provided the three-terminal transistor support according to the first aspect, wherein the center of the through portion and the first and second insertion portions are closer to the through portion. The distance from the end may be larger than the terminal distance of the three-terminal transistor. The three-terminal transistor support according to claim 3 is the three-terminal transistor support according to claim 1, wherein a distance between the center of the through portion and the center of the first and second insertion portions is set to
The distance between the terminals of the three-terminal transistor may be larger than that of the three-terminal transistor.

According to a fourth aspect of the present invention, there is provided the three-terminal transistor support according to any one of the first to third aspects, wherein the width of the through portion corresponding to the width direction of the plate member is provided. And the width of the first and second insertion portions corresponding to the width direction of the plate material is formed to a width corresponding to the thickness of the terminal of the three-terminal transistor.

(Function) In the three-terminal transistor support according to the first aspect, each terminal of the three-terminal transistor is provided with the first terminal and the first terminal in a state in which the plate material is curved about the through portion.
Then, the three-terminal transistor is supported by the plate material, and is easily supported on the printed wiring board by the restoring force for the plate material to return to the original flat state when the second insertion portion is inserted.

Thereafter, the three-terminal transistor is soldered together with other electronic components on the printed wiring board. In the supporting device for a three-terminal transistor according to claim 2, the distance between the center of the penetrating portion and the end of the first and second insertion portions on the penetrating portion side is larger than the terminal distance of the three-terminal transistor. When the is bent, the terminals of the three-terminal transistor can be inserted into the first and second insertion portions, and the three-terminal transistor is reliably supported by the curved plate material.

In the three-terminal transistor support of the third aspect, the distance between the center of the through portion and the center of the first and second insertion portions is made larger than the terminal interval of the three-terminal transistor. As a result, the terminals of the three-terminal transistor can be inserted into the first and second insertion portions, and the three-terminal transistor is easily supported by the plate.

According to the support for a three-terminal transistor of the fourth aspect, the width of the penetrating portion of the plate material and the width of the first and second insertion portions are equal to each other.
Since the three-terminal transistor is formed in accordance with the thickness of the terminal of the three-terminal transistor, the three-terminal transistor inserted into the plate material is securely supported without shaking.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a first embodiment (corresponding to claims 1 and 2) of a support for a three-terminal transistor according to the present invention. In the drawing, a long hole-shaped through portion 13 penetrating the plate 11 is formed at the center of the heat-resistant and insulating plate 11 having flexibility. In this embodiment, the plate 11 is made of, for example, polyethylene terephthalate having a thickness of 0.05 mm.

The first and second insertion portions 1 penetrating the plate 11 are provided on both sides along the longitudinal direction of the penetrating portion 13 of the plate 11.
5, 17 are formed in a long hole shape along the longitudinal direction. Here, the center 13a of the penetrating portion 13 and the ends 15a, 1 of the first and second inserting portions 15, 17 on the penetrating portion 13 side.
The distance L1 from the terminal 7a is larger than the distance L2 between the terminals of the three-terminal transistor 19.

As described below, the above-mentioned plate material 11
Used as a support for the terminal transistor 19. That is, first, as shown in FIG.
Around the center. Next, as shown in FIG. 3, the penetrating portion 13 is inserted into the central terminal 21 of the three-terminal transistor 19 with the penetrating portion 13 side of the plate 11 facing the three-terminal transistor 19.

Thereafter, the first and second insertion portions 15 and 17 are inserted into the terminals 23 and 25 on both sides of the three-terminal transistor 19 while adjusting the curved shape of the plate 11. Then, as shown in FIG.
With the terminal transistor 19 being inserted up to the base of the terminal 21, the curved state of the plate 11 is released. By releasing the curved state, the plate 11 attempts to return to the original flat shape,
Due to this restoring force, the end portions 15a, 17a of the first and second insertion portions 15, 17 of the plate material 11 on the penetrating portion 13 side become 3
The plate material 11 and the three-terminal transistor 19 are mutually supported while being pressed against the terminals 23 and 25 on both sides of the terminal transistor 19.

Next, as shown in FIG. 5, the terminals 21, 23 and 25 of the three-terminal transistor 19 are
7 is inserted into the through hole 27 a, and both ends 11 a and 11 b in the longitudinal direction of the plate material 11 abut on the printed wiring board 27. Then, the three-terminal transistor 19 is supported on the printed wiring board 27 via the plate material 11, and in this state, the three-terminal transistor 19 is soldered to the printed wiring board 27.

In the three-terminal transistor support having the above-described structure, the center terminal 2 of the three-terminal transistor 19 is formed in a state where the plate material 11 is curved around the through portion 13.
Since the penetrating part 13 and the first and second penetrating parts 15 and 17 have been inserted into the terminal 23 and the terminals 23 and 25 on both sides, the restoring force of the plate 11 to return to the original flat state causes
The terminal transistor 19 can be supported by the plate 11, and the three-terminal transistor 19 can be easily and reliably supported on the printed wiring board 27.

The center of the penetrating portion 13 and the first and second
End portions 15a, 17 of the insertion portions 15, 17 on the through portion 13 side
a is larger than the terminal distance L2 of the three-terminal transistor 19, so that when the plate material 11 is curved, the terminals 23, 25 of the three-terminal transistor 19 are inserted into the first and second insertion portions 15, 17. Can be inserted, and the three-terminal transistor 19 can be reliably supported by the curved plate material 11.

Further, the plate material 1 is added to the three-terminal transistor 19.
1 is attached, the three-terminal transistor 19 and the plate 11 are supported mutually by the restoring force of the curved plate 11, so that the plate 11 can be attached to the three-terminal transistor 19 in advance. The three-terminal transistor 19 can be mounted on the printed wiring board 27 by an automatic mounting line.

The three-terminal transistor 19 has a plate material 11
Since the three-terminal transistor 19 was soldered to the printed wiring board 27 with the
The terminal transistor 19 can be supported by the plate material 11.
Even when other parts, tools, or the like 9 collide, the three-terminal transistor 19 can be prevented from falling down.

FIG. 6 shows a third embodiment (corresponding to claim 3) of a support for a three-terminal transistor according to the present invention. In this embodiment, the center 13a of the penetrating portion 13 of the plate member 11 and the center 1a of the first and second insertion portions 15, 17 are provided.
The distance L3 between the three-terminal transistors 19b and 5b
Is larger than the terminal interval L2.

In this embodiment, the same effect as in the first embodiment can be obtained. However, in this embodiment, the center 13a of the through portion 13 and the first and second
L3 between the centers 15b and 17b of the insertion portions 15 and 17
Is larger than the terminal interval L2 of the three-terminal transistor 19, so that the first
In addition, the terminals 23 and 25 of the three-terminal transistor 19 can be inserted through the second insertion portions 15 and 17, and the three-terminal transistor 19 can be easily supported on the plate 11.

FIG. 7 shows a third embodiment (corresponding to claim 4) of a three-terminal transistor support of the present invention. In this embodiment, the width W corresponding to the width direction of the plate material 11 between the penetrating portion 13 of the plate material 11 and the first and second insertion portions 15 and 17 is equal to the terminal 2 of the three-terminal transistor 19.
It is formed to have the same thickness as the thicknesses 1, 23, and 25.

In this embodiment, the same effects as those of the first embodiment can be obtained. However, in this embodiment, the through portion 13 of the plate 11 and the first and second insertion portions 15 and 17 are provided. Is adjusted to the thickness of the terminals 21, 23, 25 of the three-terminal transistor 19.
The three-terminal transistor 19 that is inserted in the first terminal can be reliably supported without shaking.

In the first embodiment described above, the first and second elongated holes are provided on both sides of the plate 11 in the longitudinal direction.
However, the present invention is not limited to such an embodiment. For example, as shown in FIG. 8, on both sides in the longitudinal direction of the plate material 11 along the longitudinal direction. You may form the 1st and 2nd penetration part 15 and 17 which consist of a slit which is notched.

[0031]

According to the first aspect of the present invention, in the state where the plate is bent around the through portion, the through portion and the first and second terminals are provided at the center terminal and the terminals on both sides of the three terminal transistor. Since the insertion portion 2 is inserted, the three-terminal transistor can be supported on the plate by the restoring force of the plate to return to the original flat state, and the three-terminal transistor can be easily and reliably mounted on the printed wiring board. Can be supported.

In the three-terminal transistor support of the second aspect, the distance between the center of the through portion and the end of the first and second insertion portions on the through portion side is larger than the terminal interval of the three-terminal transistor. When the plate is bent, the first and second
The terminal of the three-terminal transistor can be inserted through the insertion part, and the three-terminal transistor can be reliably supported by the curved plate material.

In the three-terminal transistor support according to the third aspect, the distance between the center of the penetrating portion and the centers of the first and second insertion portions is larger than the terminal distance of the three-terminal transistor, so that the plate material can be appropriately adjusted. By bending, the terminals of the three-terminal transistor can be inserted into the first and second insertion portions, and the three-terminal transistor can be easily supported on the plate.

According to the three-terminal transistor support of the fourth aspect, the width between the penetrating portion of the plate and the first and second insertion portions is set to
Since the thickness of the terminal of the three-terminal transistor is adjusted, the three-terminal transistor inserted into the plate member can be reliably supported without shaking.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a support for a three-terminal transistor according to the present invention.

FIG. 2 is a cross-sectional view showing a state where a plate material is curved.

FIG. 3 is a cross-sectional view showing a state where a three-terminal transistor is inserted into a curved plate material.

FIG. 4 is a cross-sectional view showing a state where a three-terminal transistor is inserted into a curved plate material.

FIG. 5 is a cross-sectional view showing a state where a three-terminal transistor having a plate material inserted therein is inserted into a printed wiring board.

FIG. 6 is a front view showing a second embodiment of the three-terminal transistor support of the present invention.

FIG. 7 is a front view showing a third embodiment of a support for a three-terminal transistor according to the present invention.

FIG. 8 is a front view showing an example in which first and second insertion portions of a plate member are formed by slits cut out along a longitudinal direction.

FIG. 9 is a perspective view showing a state in which a masking tape is attached when a conventional three-terminal transistor is supported on a printed wiring board.

FIG. 10 is a perspective view showing a state in which a three-terminal transistor is fixed to a positioning jig.

FIG. 11 is a perspective view showing a state in which a three-terminal transistor is fixed to a printed wiring board together with a positioning jig.

FIG. 12 is a perspective view showing a state where a three-terminal transistor is soldered to a printed wiring board.

[Explanation of symbols]

 11 Board material 13 Penetration part 13a Center 15 First insertion part 15a End part 15b Center 17 Second insertion part 17a End part 17b Center 19 Three-terminal transistor 21, 23, 25 terminal W width L1, L3 interval L2 terminal interval

Claims (4)

[Claims] 1. A through-hole for inserting a central terminal of a three-terminal transistor is formed at the center of a flexible heat-resistant insulating plate, and the through-hole of the plate is provided on both sides in the longitudinal direction of the through-hole. In a state where both ends of the plate material are curved to the opposite side to the three-terminal transistor, first and second insertion portions through which terminals on both sides of the three-terminal transistor can be inserted are formed in an elongated shape along the longitudinal direction. A support for a three-terminal transistor, comprising: 2. The three-terminal transistor support according to claim 1, wherein a distance between a center of the through portion and an end of the first and second insertion portions on the through portion side is set to the three terminal. A support for a three-terminal transistor, wherein the distance between the terminals of the transistor is larger than the distance between the terminals of the transistor. 3. The three-terminal transistor support according to claim 1, wherein an interval between a center of the through portion and a center of the first and second insertion portions is larger than a terminal interval of the three-terminal transistor. A support for a three-terminal transistor. 4. The support for a three-terminal transistor according to claim 1, wherein the width of the penetrating portion corresponding to the width direction of the plate member and the first and second insertions. 3. A support for a three-terminal transistor, wherein a width of the portion corresponding to a width direction of the plate member is formed to a width corresponding to a thickness of a terminal of the three-terminal transistor.