JPH1040984A - Terminal device and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately bend terminals. SOLUTION: In a terminal device equipped with a base table 1 for disposing electrical parts thereon and terminals 2 which are connected to the electrical parts and led out from the base table 1, and whose middle parts each provided with a narrow width part 2a relatively narrow widthwise are bent in the direction that intersects an outside lateral surface of the base table 1 at right angles, the narrow width part 2a is structured such that widthwise opposite sides of the terminal 2 are formed to be substantially symmetrical and therefore mechanical strength of the widthwise opposite sides becomes substantially the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device that leads out a terminal connected to an electric component on a base on which the electric component is arranged.

[0002]

2. Description of the Related Art Conventionally, as this kind of terminal device, there is one having a configuration shown in FIGS.

[0003] This is a base A on which electric parts are arranged.
When, the intermediate portion having a narrow portion B ₁ that the connected width direction is derived from the base A to the electrical component and a relatively narrow width is bent along the perpendicular direction of the base of the outer side surface And a terminal B. Specifically, terminal B, by being cut out from one side in the width direction, are provided narrow section B _1.

[0004] The terminal B, as described above, the width in the intermediate portion isthmus B ₁ is provided to be bent to the direction perpendicular to an outer side surface of the base 1, the mechanical strength of the bent portion Since it is relatively weak, it is easy to bend into a predetermined shape.

[0005]

In the conventional terminal device described above, the terminal B has a predetermined shape because the mechanical strength of the bent portion is relatively weak as described above. It is easy to bend.

However, terminal, compared to the other side of the one side provided with the narrow portion B ₁ is not provided with the narrow portion B _1, since the mechanical strength is weakened, when the folding If it is not fixed so that an external force for bending is uniformly applied to both sides in the width direction, it will move to one side where the narrow portion B ₁ is provided.
It is bent in a state inclined as shown by arrows in 19 and FIG.
It may not be bent correctly.

[0007] The present invention has been made in view of the above points, and an object of the present invention is to provide a terminal device in which terminals are bent accurately.

[0008]

According to a first aspect of the present invention, there is provided an electric vehicle, comprising: a base on which an electric component is arranged; A terminal in which an intermediate portion provided with a narrow portion to be narrowed is bent in a direction orthogonal to an outer side surface of the base, wherein the narrow portion has a width of the terminal. Since both sides in the direction are formed substantially symmetrically, the mechanical strength on both sides in the width direction is substantially the same.

According to a second aspect of the present invention, in the first aspect, the narrow portion having both sides formed substantially symmetrically is provided locally. Therefore, the mechanical strength of the narrow portion is locally reduced.

According to a third aspect of the present invention, in the first aspect, the terminal has a configuration in which a groove along the width direction is provided in the narrow portion. . Therefore, in the terminal, an external force for bending is concentrated in the groove.

According to a fourth aspect of the present invention, in any one of the third aspects, the groove portion is provided with a deep groove portion formed locally deep. Therefore, the external force for bending is most concentrated on the deep groove in the groove.

According to a fifth aspect of the present invention, in the one of the first to fourth aspects, the terminal is recessed on the other surface so as to protrude from the intermediate portion toward one end toward the tip. Is provided. Therefore, since the mechanical strength locally increases from the intermediate portion where the concave portion is provided on the other surface side so as to protrude toward one surface side, the mechanical strength of the narrow portion of the intermediate portion which is the bent portion is increased. The strength becomes relatively weak.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the terminal is placed on a mounting surface closer to the front end from an intermediate portion thereof and soldered. The concave portion is provided on the mounting surface. Therefore, the mounting surface provided with the concave portion has a large contact area with the solder.

According to a seventh aspect of the present invention, in the semiconductor device according to any one of the first to sixth aspects, the terminal is connected by soldering from the intermediate portion to a tip end thereof, and Are formed as residual portions provided on both sides in the width direction by holes provided in the terminals. Therefore, the terminal is a member with different expansion and contraction rates,
Even if stress is applied due to solder connection involving heating and cooling, stress is absorbed by the deformation of the narrow portion formed as the remaining portion provided on both sides in the width direction by the hole. Therefore, stress does not concentrate on the solder portion.

According to an eighth aspect of the present invention, in the seventh aspect, the hole has a long hole shape. Therefore, since the narrow portion formed as the remaining portion becomes elongated due to the long hole shape, the mechanical strength is weakened, the shape is easily deformed, and the stress is easily absorbed.

According to a ninth aspect of the present invention, there is provided the manufacturing method according to the first aspect of the present invention, further comprising: a base on which the electric component is arranged; A terminal having an intermediate portion provided with a narrow portion for locally narrowing the width direction of the terminal, the terminal being bent in a direction orthogonal to the outer side surface of the base. The portion is formed such that both sides in the width direction of the terminal are formed substantially symmetrically when cut into a predetermined shape. Therefore, the narrow portion in which both sides in the width direction of the terminal are formed substantially symmetrically has a mechanical strength that is locally weakened, so that it is easy to bend into a predetermined shape. In addition, since the narrow portion has substantially the same mechanical strength on both sides in the width direction, it does not bend in a state of being inclined to one side when bending, and accurately Can be bent.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. This terminal device is
1 and terminal 2.

The base 1 has terminals 2 and electric parts (not shown).
Is a part of a molded body when integrally molded into a substantially rectangular parallelepiped shape using a molding material such as a synthetic resin.

The terminals 2 are connected to the electric components inside the base 1, respectively, and are led out from the bottom surface of the base 1, and both sides in the width direction of an intermediate portion thereof are cut out in a substantially symmetrical state, and the terminals 2 are connected to each other. A narrow portion 2a is formed to narrow the width. From the state shown in FIG. 1 (a), the terminal 2 is moved in a direction perpendicular to the outer side surface of the base 1, that is, in a direction away from the outer side surface, in the direction shown in FIG. ). When this terminal 2 is cut into a predetermined shape,
As shown by the two-dot chain line in FIG. 2, the rectangular notch forms a narrow portion 2a that is substantially symmetric on both sides.

In such a terminal device, the narrow portion 2a in which both sides in the width direction of the terminal 2 are formed substantially symmetrically has a relatively weak mechanical strength, and thus is bent into a predetermined shape. It is easy to do. In addition, since the narrow portion 2a has substantially the same mechanical strength on both sides in the width direction, the narrow portion 2a does not bend in a state inclined to one side when bent, so that it is accurate. Can be folded.

Further, since the terminal 2 is formed with the narrow portion 2a when it is cut into a predetermined shape, it is not necessary to separately provide a separate step for forming the narrow portion 2a. .

Next, a second embodiment of the present invention will be described below with reference to FIG. Note that members having substantially the same functions as those of the first embodiment are denoted by the same reference numerals, and only differences from the first embodiment will be described. In the first embodiment, the terminal
2 has a narrow portion 2a formed by notching a rectangular portion on both sides in the width direction of an intermediate portion, whereas, in the present embodiment, the narrow portion 2a is cut by a triangular shape. The configuration is such that the portion 2a is formed locally.

In such a terminal device, the narrow portion 2a formed so as to be locally narrow in the width direction has a mechanical strength that is locally weak, and therefore is smaller than in the first embodiment. ,
It is much easier to bend.

In the present embodiment, the terminal 2 has a narrow portion 2a which is locally narrowed by notching a triangular shape on both sides in the width direction of an intermediate portion.
As shown in FIG. 6, the same effect can be obtained even if a narrow portion 2 a that is locally narrowed by being cut out in a semicircular shape is formed.

Next, a third embodiment of the present invention will be described below with reference to FIGS. The members having substantially the same functions as those of the first embodiment are denoted by the same reference numerals,
Only different points from the first embodiment will be described. In the first embodiment, the terminal 2 has a configuration in which the narrow portion 2a is flat, while in the present embodiment, the groove 2b is provided along the width direction. More specifically, the groove 2b is formed with a deep groove 2c that is locally formed deep.

In such a terminal device, since an external force for bending concentrates on the groove 2b provided along the width direction of the narrow portion 2a of the terminal 2, the terminal 2 extends along the groove 2b. 2 is bent, which is easier to bend than in the first embodiment.

Further, since the external force for bending is most concentrated in the deep groove portion 2c in the groove portion 2b, the terminal 2 is bent along the deep groove portion 2c, and the terminal 2 is more easily bent. It has become.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described below based on FIG. The members having substantially the same functions as those of the first embodiment are denoted by the same reference numerals,
Only different points from the first embodiment will be described. In the first embodiment, the terminal 2 is flat from the middle portion to the tip, whereas in the present embodiment, the terminal 2 is formed by squeezing or the like.
A concave portion 2d is provided on the other surface so as to protrude toward one surface.

More specifically, as shown in FIG. 12, the other surface of the terminal 2 on which the concave portion 2d is provided is a mounting surface 2e on which the substrate 10 or the like is mounted. It is soldered to the substrate 10 or the like.

In such a terminal device, the mechanical strength is locally increased from the intermediate portion where the concave portion 2d is provided on the other surface side so as to protrude toward the one surface side. The mechanical strength of the narrow portion 2a at a certain intermediate portion is relatively weak, and is more easily bent than in the first embodiment.

The mounting surface 2e provided with the concave portion 2d has a larger contact area with the solder 20, so that it can be connected more firmly with the solder.

Further, since the solder 20 enters the concave portion 2d, the solder 20 does not easily spread outside the connection portion, and is not connected to another adjacent connection portion.

Next, a fifth embodiment of the present invention will be described with reference to FIGS.
This will be described below based on No. 14. The members having substantially the same functions as those of the first embodiment are denoted by the same reference numerals,
Only different points from the first embodiment will be described. In the first embodiment, the terminal 2 has a narrow portion 2a formed by cutting both sides in the width direction into a rectangular shape. In the present embodiment, the terminal 2 has a circular shape provided on the terminal 2. The holes 2f are formed as remaining portions provided on both sides in the width direction. The mounting surface 2e of the terminal 2 of the present embodiment is soldered to the substrate 10 or the like, similarly to the terminal 2 of the fifth embodiment.

In such a terminal device, even if the terminal 2 may be stressed by soldering involving heating and cooling to the substrate 10 and the like, which are members having different expansion and contraction rates, The stress is absorbed by the deformation of the narrow portion 2a formed as the remaining portion provided on both sides in the width direction by the hole 2f, so that the stress is not concentrated on the solder 20 portion, and the solder crack is generated. It is hard to get up.

Next, a sixth embodiment of the present invention will be described below with reference to FIG. Note that members having substantially the same functions as those of the fifth embodiment are denoted by the same reference numerals, and only different points from the first embodiment will be described. In the first embodiment, the hole
While 2f is formed in a circular shape, in the present embodiment,
The hole 2f is formed in a long hole shape.

In such a terminal device, the narrow portion 2a formed as the remaining portion is elongated because the hole portion 2f is elongated, so that the mechanical strength is weakened and it is easy to deform. Since the stress is easily absorbed, solder cracks are less likely to occur than in the fifth embodiment.

Next, a seventh embodiment of the present invention will be described below with reference to FIG. In the present embodiment, similarly to the second embodiment, both sides in the width direction of the terminal 2 are cut out in a triangular shape, and similarly to the sixth embodiment, an elongated hole 2f provided in the terminal 2 is used. A configuration in which a narrow portion 2a is formed as a remaining portion provided on both sides in the width direction, a configuration in which a groove 2b having a deep groove 2c is provided as in the third embodiment, and a fourth configuration.
As in the embodiment, a configuration in which the mounting surface 2e is provided with the concave portion 2d is provided.

In such a terminal device, the second to fourth terminals
As in the case of the embodiment, it is easier to bend and the solder can be firmly connected as in the case of the fourth embodiment, and solder cracks are unlikely to occur as in the case of the sixth embodiment.

In each of the third and seventh embodiments, the groove 2b has the deep groove 2c.
When 2 is thin and easy to bend, it is not necessary to have the deep groove 2c, and in that case, the degree of freedom of design can be increased.

In each of the fourth and seventh embodiments, the recess 2d is provided on the other surface serving as the mounting surface 2e. For example, when the mounting surface 2e is not connected by soldering, the one surface is provided. May be provided, and even then, it is easier to bend than in the first embodiment.

In each of the first to seventh embodiments, the base is derived from the bottom surface of the base 1. However, the base is derived from the outer side surface of the base 1 and then bent along the outer side surface. However, a similar effect can be obtained.

In each of the first to seventh embodiments, the base 1 is bent in the direction away from the outer side surface. However, the same effect can be obtained by bending the base 1 in the opposite direction. Can be played.

[0043]

According to the first aspect of the present invention, the narrow portion in which both sides in the width direction of the terminal are formed substantially symmetrically has a relatively weak mechanical strength, and thus is bent into a predetermined shape. It is easy to do. Moreover, since the narrow portion has substantially the same mechanical strength on both sides in the width direction, it does not bend in a state of being inclined to one side when bending, so that the narrow portion can be accurately formed. Can be bent.

According to the second aspect of the present invention, the narrow portion provided locally has a mechanical strength that is locally weakened, and therefore, it is easier to bend than the first aspect of the present invention. It has become.

According to the third aspect of the present invention, since the external force for bending is concentrated in the groove provided along the width direction of the narrow portion of the terminal, the terminal is bent along the groove. As a result, it is easier to bend than the invention described in either claim 1 or 2.

According to the fourth aspect of the present invention, since the external force for bending is most concentrated in the deep groove in the groove, the terminal is bent along the deep groove. It is easier to bend than the invention of the above.

According to the fifth aspect of the present invention, the mechanical strength is locally increased from the intermediate portion where the concave portion is provided on the other surface side so as to protrude toward the one surface side. The mechanical strength of the narrow part in the middle part becomes relatively weak,
It is easier to bend than the invention according to any one of claims 1 to 4.

According to the sixth aspect of the present invention, in addition to the effect of the fifth aspect of the present invention, the mounting surface provided with the concave portion has a large contact area with the solder, so that the solder can be firmly connected. it can.

According to a seventh aspect of the present invention, in addition to the effects of the first aspect, the terminals are connected to members having different expansion and contraction rates by soldering with heating and cooling. May be stressed by
The stress is absorbed by deforming the narrow portions formed as the remaining portions provided on both sides in the width direction by the holes, so that stress is not concentrated on the solder portion, and solder cracks are less likely to occur. .

According to the eighth aspect of the present invention, since the narrow portion formed as the remaining portion is elongated because the hole is elongated, the mechanical strength is weakened, the shape is easily deformed, and the stress is reduced. Since it is easily absorbed, solder cracks are less likely to occur than in the invention described in claim 7.

According to the manufacturing method of the ninth aspect,
The narrow portion in which both sides in the width direction of the terminal are formed substantially symmetrically has a mechanical strength that is locally weakened, so that it is easy to bend into a predetermined shape. In addition, since the narrow portion has substantially the same mechanical strength on both sides in the width direction, it does not bend in a state of being inclined to one side when bending, and accurately Can be bent. In addition, since the narrow portion is formed when the sheet is cut into a predetermined shape, it is not necessary to provide a separate step for forming the narrow portion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a terminal according to a first embodiment of the present invention is bent.

FIG. 2 is a perspective view of the same.

FIG. 3 is a partial front view of the terminal.

FIG. 4 is an explanatory view showing a procedure for forming a narrow portion in the terminal of the above.

FIG. 5 is a partial front view of a terminal according to a second embodiment of the present invention.

FIG. 6 is a partial front view of a terminal according to a modification of the above.

FIG. 7 is a partial front view of a terminal according to a third embodiment of the present invention.

FIG. 8 is a partial side view of the terminal.

FIG. 9 is a partial front view of a terminal according to a fourth embodiment of the present invention.

FIG. 10 is a sectional view taken along line XX of FIG. 8;

FIG. 11 is a partial side view of the terminal.

FIG. 12 is a partial front view showing a state where the terminal is soldered to a substrate.

FIG. 13 is a partial front view of a terminal according to a fifth embodiment of the present invention.

FIG. 14 is a partial front view showing a state where the terminal is soldered.

FIG. 15 is a partial front view of a terminal according to a sixth embodiment of the present invention.

FIG. 16 is a partial front view of a terminal according to a seventh embodiment of the present invention.

FIG. 17 is a perspective view of a conventional example.

FIG. 18 is a perspective view showing a state in which the terminal is bent.

FIG. 19 is a partial front view showing a state where the terminal is bent.

FIG. 20 is a partial plan view showing a state where the terminal is bent.

[Explanation of symbols]

 1 Base 2 Terminal 2a Narrow section 2b Groove section 2c Deep groove section 2d Concave section 2e Mounting surface 2f Hole section

Claims (9)

[Claims] 1. An outer side surface of a base, on which a base on which electric components are arranged, and an intermediate portion provided with a narrow portion connected to the electric components and derived from the base and relatively narrowing in a width direction are provided. A terminal bent in a direction orthogonal to the terminal device, wherein both sides of the narrow portion in the width direction of the terminal are formed substantially symmetrically. 2. The terminal device according to claim 1, wherein the narrow portion having both sides formed substantially symmetrically is provided locally. 3. The terminal device according to claim 1, wherein the terminal has a groove formed in the narrow portion along the width direction. 4. The terminal device according to claim 3, wherein the groove is provided with a deep groove locally formed deep. 5. The terminal device according to claim 1, wherein the terminal is provided with a concave portion on the other surface side so as to protrude from the intermediate portion toward one end toward the front end. . 6. The terminal according to claim 1, wherein a mounting surface is mounted on the mounting surface closer to the tip from an intermediate portion thereof, and the terminal is provided with the concave portion. Item 5
The terminal device as described. 7. The terminal is connected by soldering from the intermediate portion to a tip end thereof, and the narrow portion is formed as a residual portion provided on both sides in the width direction by holes provided in the terminal. The terminal device according to any one of claims 1 to 6, wherein: 8. The terminal device according to claim 7, wherein the hole has a long hole shape. 9. A base on which an electric component is arranged, cut into a predetermined shape, then integrally formed with the base and connected to the electric component, and a width direction of a portion derived from the base is locally narrowed. A terminal having an intermediate portion provided with a narrow portion to be bent in a direction orthogonal to an outer side surface of the base, wherein the narrow portion is cut into a predetermined shape. A method of manufacturing a terminal device, characterized in that sometimes both sides of the terminal in the width direction are formed substantially symmetrically.