JPH10106654A - Terminal device and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To curve terminals accurately by providing a curved part along the boundary of solder adhering to the surface of each terminal from its end to its middle. SOLUTION: Each of terminals 2 is connected to an electronic component inside a base 1, is brought out from the bottom surface of time base 1, and curved in the perpendicular direction (away from) to the outer side face of the base 1 along the boundary 3a of solder 3 adhering to the surface tram its end to its middle, so as to provide a curved part 28. The terminal 2 on the solder 3 adhering to the surface from its end to its middle varies greatly in mechanical strength between its soldered and unsoldered portions across the boundary 3a of the solder. Therefore the curved part 2a can be provided easily along the boundary 3a of the solder 3. Thus by aligning the boundaries 3a of the solder 3 among the terminals 2, the terminals 2 can be curved correctly.

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 a terminal device of this type, FIG.
There are the configurations shown in (a) and (b). This material has a base A to place the electrical components, the bent portion B ₁ that is derived from the connected to the electrical component base A and is bent along the perpendicular direction of the base of the outer side surface in the middle portion And a terminal B to be provided.

[0003]

In the above-mentioned conventional terminal device, since the terminals B are all formed uniformly, for example, as shown in FIG. If they are not aligned on the same straight line, they may not be bent at a predetermined position from the derived root part, as shown in FIG.

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.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 includes a base on which electric components are arranged, and a base connected to the electric components and led out of the base to an intermediate portion. A terminal provided with a bent portion that is bent in a direction orthogonal to the outer side surface of the table, wherein the terminal is formed of solder attached to a surface from the tip to the intermediate portion. The bent portion is provided along the boundary.

According to a second aspect of the present invention, in the first aspect, the terminal has a configuration in which a narrow portion for locally narrowing the width direction is provided in the intermediate portion.

According to a third aspect of the present invention, in the second aspect, the terminal is placed on a placement surface provided near the tip from the intermediate portion and soldered. The narrow portion is formed as a residual portion provided on both sides in the width direction by a hole provided in the terminal.

According to a fourth aspect of the present invention, in the third aspect, the hole has an opening dimension along a lead-out direction of the terminal from the bent portion to the opening edge on the front end side. It has a long hole shape longer than the opening dimension up to the opening edge on the base end side.

According to a fifth aspect of the present invention, in the first aspect, the terminal is formed to be narrower from the distal end to the intermediate portion than the base end.

According to a sixth aspect of the present invention, in the fifth aspect, the terminal is mounted on a mounting surface provided near the front end from the intermediate portion and connected by soldering. Thus, a hole is provided in the intermediate portion.

According to a seventh aspect of the present invention, in the sixth aspect, the hole has an opening dimension along a lead-out direction of the terminal from the bent portion to the opening edge on the front end side. It has a long hole shape longer than the opening dimension up to the opening edge on the base end side.

[0012] Further, what is stated in claim 8 is claim 1,
6. The terminal according to any one of 2 and 5, wherein the terminal is placed and soldered on a mounting surface provided near the tip from the intermediate portion, and a hole is formed in the mounting surface. Is provided.

According to a ninth aspect of the present invention, in the one of the first to eighth aspects, the terminal has a configuration in which a groove along the width direction is provided in the intermediate portion.

According to claim 10, claim 1 is based on claim 1.
10. In any one of the above items 9 to 9, the terminal
A concave portion is provided on the other surface side so as to protrude toward the one surface side from the intermediate portion toward the front end.

[0015] According to the eleventh aspect, the first aspect is the first aspect.
0, the terminal is placed on a mounting surface provided near the front end from the intermediate portion and connected by soldering, and the concave portion is provided on the mounting surface. .

In a manufacturing method according to a twelfth aspect of the present invention, the electric component is disposed on the base, and the electric component is connected to the electric component and is bent out of the base in a direction perpendicular to the outer side surface of the base. In the manufacture of a terminal device having a terminal, the terminal is bent along the boundary of the solder after the solder is attached to the surface from the tip to the intermediate portion.

[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 drawn out from the bottom surface of the base 1 and along the boundary 3a of the solder 3 attached to the surface from the tip to the middle. From the state shown in FIG. 1 (a), in the direction orthogonal to the outer side surface of the base 1, specifically, in the direction away from the outer side surface, the base 1 is bent as shown in FIG. Is provided.

In such a terminal device, the terminal 2 having the solder 3 attached to the surface from the front end to the middle portion is located between the soldered portion and the non-soldered portion.
The mechanical strength greatly changes across the boundary 3a of the solder, and the bent portion 2a can be easily provided along the boundary 3a of the solder 3. Therefore, by aligning the boundary 3a of the solder 3 between the terminals 2, the terminals 2 can be bent accurately.

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, the terminal 2 has a constant width from the distal end to the intermediate portion, whereas in the present embodiment, the terminal 2 has a configuration in which the width from the distal end to the intermediate portion is narrower than the proximal end side. I have.

In such a terminal device, the terminal 2 formed narrower from the distal end to the intermediate portion than the proximal end is
Since the mechanical strength of the narrower distal end portion and the proximal end portion greatly changes at the middle portion, the bent portion 2a can be provided more easily than in the first embodiment. Thus, the terminal 2 can be bent more accurately than in the first embodiment.

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 constant width dimension, whereas in the present embodiment, a residual portion is formed by the provision of the substantially circular hole 2b, and the residual portion is formed in the width direction by the residual portion. Is formed to have a narrow portion 2c for locally reducing the width.

The terminal 2 is mounted on the mounting surface 2d such that the outer surface of the terminal 2 is closer to the front end from the intermediate portion, that is, closer to the front end from the bent portion 2a, and is soldered to the substrate 10 or the like.

In such a terminal device, the intermediate portion of the terminal 2 is provided with the narrow portion 2c for locally narrowing the width direction, so that the mechanical strength becomes relatively weak. The bent portion 2a can be provided more easily than in the first embodiment,
As a result, the terminal 2 can be bent more accurately than in the first embodiment.

Further, since the solder 3 attached to the mounting surface 2d for solder connection goes around the inner edge of the hole 2b in the mounting surface 2d, the soldering area to the terminal 2 is large. Therefore, the joining strength by soldering can be increased.

Further, even if the terminal 2 is subjected to stress due to solder connection involving heating and cooling to the substrate 10 and the like, which are members having different expansion and contraction rates, the hole 2b can be used in the width direction. Since the stress is absorbed by the deformation of the narrow portion 2c formed as a residual portion provided on both sides of the solder, the stress does not concentrate on the solder 3 portion, and solder cracks are less likely to occur. I have.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described below based on No. 10. The members having substantially the same functions as those of the third embodiment are denoted by the same reference numerals,
Only different points from the third embodiment will be described. In the third embodiment, the hole 2b has a substantially circular shape, whereas in the present embodiment, the hole 2b is formed in a long hole shape. For more information,
The hole 2b is formed such that the opening dimension from the bent portion 2a to the opening edge on the distal end side of the terminal 2 is larger than the opening size from the opening edge on the base end side.

In such a terminal device, the elongated hole 2b whose opening dimension from the bent portion 2a to the opening edge on the distal end side of the terminal 2 is larger than the opening size from the opening edge on the base end side is formed. Since the distance of the inner edge around which the solder 3 adhered to the mounting surface 2d flows can be made longer, the soldering area to the terminal 3 becomes larger, and the bonding strength by soldering is higher than that of the third embodiment. Can be higher.

The narrow portion 2c formed as a residual portion
Is elongated because the hole 2b is elongated,
Since the mechanical strength is weakened, it is easily deformed, and the stress is easily absorbed, so that solder cracks are less likely to occur than in the third embodiment.

Next, a fifth embodiment of the present invention will be described with reference to FIGS.
13 will be described below. 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 constant width dimension and is flat from the middle portion to the tip, whereas in the present embodiment, the width direction of the middle portion is locally narrowed. A narrow portion 2c is provided by being cut out in a square shape, and the bent portion is formed by squeezing processing from the middle portion to the tip.
A concave portion 2e is provided on the other surface side of the mounting surface 2d so as to protrude toward one surface side inside 2a. The terminal 2 of the present embodiment is similar to the terminal 2 of the third embodiment, and has a mounting surface 2d.
Is soldered to the substrate 10 or the like.

In such a terminal device, the intermediate portion of the terminal 2 is provided with a narrow portion 2c for locally narrowing the width direction, so that the mechanical strength becomes relatively weak.
The terminal 3 provided with the concave portion 2e on the other surface so as to protrude toward the one surface side near the distal end from the intermediate portion is provided between the distal end side where the concave portion 2e is provided and the base end side where the concave portion 2e is not provided. As a result, the mechanical strength changes greatly, and the bent portion 2a can be provided more easily than in the first embodiment, and the terminal 2 can be bent more accurately than in the first embodiment. Can be.

Also, since the solder 3 attached to the mounting surface 2d for solder connection enters the recess 2e, the soldering area to the terminal 3 increases, so that the bonding strength by soldering should be increased. Can be.

Further, when the solder 3 enters the concave portion 2e, the solder 3 hardly spreads outside the connection portion, and is not connected to another adjacent connection portion.

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 fifth embodiment will be described. In the fifth embodiment, the narrow portion 2c is provided with a rectangular cutout, whereas in the present embodiment, the narrow portion 2c is cut out in a triangular shape and has the same length as that of the fourth embodiment. It is configured to be provided as a remaining portion provided with a hole-shaped hole 2b, and is further provided with a groove 2f along the width direction. In addition,
The groove 2f has a triangular cross section.

In such a terminal device, the narrow portion 2c is cut out in a triangular shape and provided with a narrowest portion where the mechanical strength is further reduced, and the external force for bending is concentrated. Since the different grooves 2f are provided, the bent portions 2a can be provided more easily than in the fifth embodiment, and the terminals 2 can be bent more accurately than in the fifth embodiment.

Further, by providing the elongated holes 2b in the terminals 2, the bonding strength by soldering can be increased as in the fourth embodiment, and solder cracks are less likely to occur.

Further, since the terminal 2 is provided with the concave portion 2e, the joining strength by soldering can be increased as in the fifth embodiment, and the terminal 2 is not connected to another adjacent connection portion.

Next, a seventh embodiment of the present invention will be described below with reference to FIG. Note that members having substantially the same functions as those in the sixth embodiment are denoted by the same reference numerals, and only different points from the sixth embodiment will be described. In the sixth embodiment, a triangular cutout is provided, a long hole 2b is provided, a narrow portion 2c is provided, and a triangular groove 2f is provided. In the embodiment, a configuration is provided in which a portion from the distal end to the intermediate portion is formed narrower than the base end side, an elongated hole portion 2b is provided in the intermediate portion, and a groove portion 2f having a square cross section is further provided. Has become.

In such a terminal device, the terminal formed narrower from the distal end to the intermediate portion than the base end side has an intermediate portion between the narrowed distal end portion and the base end side. Since the mechanical strength changes greatly at the boundary and the groove 2 f where the external force for bending is concentrated is provided,
The bent portion 2a can be provided more easily than in the fifth embodiment, and the terminal 2 can be bent more accurately than in the fifth embodiment.

Further, by providing the elongated holes 2b in the terminals 2, the bonding strength by soldering can be increased as in the fourth embodiment, and solder cracks are less likely to occur.

Also, by providing the terminal 2 with the concave portion 2e, the bonding strength by soldering can be increased as in the fifth embodiment, and the terminal 2 is not connected to another adjacent connection portion.

In each of the fifth to seventh embodiments, the concave portion 2e is provided on the other surface serving as the mounting surface 2d. For example, when the mounting surface 2d is not soldered, the concave surface 2e is provided on one surface. 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 is later 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 a 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.

In each of the third, fourth, sixth and seventh embodiments, the hole 2b is provided at the intermediate portion, and
2d and the non-mounting surface.
Even if it is provided only on the inner edge of the hole 2b, the solder 3 goes around the inner edge of the hole 2b, so that the area for soldering to the terminal is increased, so that the bonding strength by soldering can be increased.

[0047]

According to the first aspect of the present invention, the terminal having the solder attached to the surface from the front end to the intermediate portion has a solder boundary between a soldered portion and a non-soldered portion. The mechanical strength is greatly changed by sandwiching, and the bent portion can be easily provided along the boundary of the solder.
Therefore, by aligning the solder boundaries between the terminals, the terminals can be bent accurately.

According to a second aspect of the present invention, the intermediate portion of the terminal is
Since the mechanical strength is relatively weakened by providing the narrow portion that locally narrows the width direction, the bent portion can be provided more easily than the invention according to claim 1. As a result, the effect of the invention described in claim 1 can be further achieved.

According to a third aspect of the present invention, in addition to the effect of the second aspect, the solder attached to the mounting surface for solder connection is formed along the inner edge of the hole in the mounting surface. Since the area to be soldered to the terminals is large because it goes around,
The joining strength by soldering can be increased.

According to a fourth aspect of the present invention, there is provided an elongate hole in which the opening dimension from the bent portion to the opening edge on the distal end side of the terminal is larger than the opening dimension from the opening edge on the base end side. Since the distance of the inner edge where the solder attached to the surface goes around can be made longer, the soldering area to the terminal becomes larger,
The bonding strength by soldering can be higher than that of the third aspect of the invention.

According to a fifth aspect of the present invention, the terminal formed narrower from the distal end to the intermediate portion than the base end side has an intermediate portion between the narrowed distal end portion and the base end side. Since the mechanical strength greatly changes at the boundary, the bent portion can be provided more easily than the first aspect of the invention, and the effect of the first aspect of the invention can be further enhanced.

According to a sixth aspect of the present invention, in addition to the effect of the fifth aspect, the solder attached to the mounting surface for solder connection is formed along the inner edge of the hole in the mounting surface. Since the area to be soldered to the terminals is large because it goes around,
The joining strength by soldering can be increased.

According to the seventh aspect of the present invention, in addition to the effect of the sixth aspect, the opening dimension from the bent portion to the opening edge on the distal end side of the terminal is larger than the opening dimension from the opening edge on the base end side. 4. The large-hole-shaped hole having a larger size can further increase the distance of the inner edge around which the solder attached to the mounting surface flows, so that the soldering area to the terminal becomes larger. The bonding strength by soldering can be made higher than the invention.

According to an eighth aspect of the present invention, in addition to the effect of the first, second or fifth aspect, the solder attached to the mounting surface for solder connection is formed on the inner edge of the hole. Since the wire is wrapped around the portion, the soldering area to the terminal is increased, so that the bonding strength by soldering can be increased.

According to a ninth aspect of the present invention, the intermediate portion of the terminal is
Since the mechanical strength is relatively weakened by providing the groove along the width direction, the bent portion can be provided more easily than the invention according to any one of claims 1 to 8, and as a result, The effect of the invention described in claim 1 can be further achieved.

According to the tenth aspect of the present invention, the terminal provided with the concave portion on the other surface so as to protrude toward the one surface side from the intermediate portion toward the distal end does not have the concave portion provided with the distal end side. The mechanical strength greatly changes at the middle portion between the base end side and the intermediate portion, so that the bent portion can be provided more easily than the invention according to any one of claims 1 to 9, and furthermore, The effects of the invention described in 1 can be further achieved.

According to an eleventh aspect of the present invention, in addition to the effect of the tenth aspect of the present invention, the solder attached to the mounting surface for solder connection enters the recess, so that the soldering area to the terminal is reduced. Therefore, the bonding strength by soldering can be increased.

According to the manufacturing method of the twelfth aspect of the present invention, the terminal having solder applied to the surface from the front end to the intermediate portion is provided between the soldered portion and the non-soldered portion. The mechanical strength changes greatly across the boundary of, and it can be easily bent along the boundary of the solder. Therefore, by aligning the solder boundaries between the terminals, the terminals can be bent accurately.

[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 showing a state before a bent portion of the terminal is provided.

FIG. 4 is a partial side view showing a state before a bent portion of the terminal is provided.

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

FIG. 6 is a partial front view of a terminal according to a third embodiment of the present invention before a bent portion is provided.

FIG. 7 is a partial perspective view showing a state where a bent portion is provided in the terminal of the above.

FIG. 8 is a cross-sectional view showing a state where the terminal is connected by soldering.

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

FIG. 10 is a partial perspective view showing a state where the terminal is provided with a bent portion.

FIG. 11 is a partial front view of a terminal according to a fifth embodiment of the present invention before a bent portion is provided.

FIG. 12 is a sectional view taken along line XX of FIG. 11;

FIG. 13 is a partial side view showing a state before a bent portion of the terminal is provided.

FIG. 14 is a partial front view of a terminal according to a sixth embodiment of the present invention before a bent portion is provided.

FIG. 15 is a partial front view of a terminal according to a seventh embodiment of the present invention before a bent portion is provided.

FIG. 16 is a perspective view showing a state in which a conventional terminal is bent.

[Explanation of symbols]

 1 Base 2 Terminal 2a Bend 2b Hole 2c Narrow width 2d Mounting surface 2e Depression 2f Groove 3 Solder 3a boundary

Claims (12)

[Claims] 1. A base on which an electric component is disposed, and a bent portion connected to the electric component and led out of the base and bent at a middle portion in a direction orthogonal to an outer side surface of the base is provided. A terminal device comprising: a terminal; wherein the terminal is provided with the bent portion along a boundary of solder attached to a surface from a tip end to the intermediate portion. 2. The terminal device according to claim 1, wherein the terminal is provided with a narrow portion for narrowing a width direction locally in the intermediate portion. 3. The terminal is mounted on a mounting surface provided near the front end from the intermediate portion and connected by soldering, and the narrow portion is formed by a hole provided in the terminal. The terminal device according to claim 2, wherein the terminal device is formed as a residual portion provided on both sides in the width direction. 4. An elongated hole having an opening dimension along a lead-out direction of the terminal from the bent portion to the opening edge on the distal end side longer than an opening dimension on an opening edge on the base end side. The terminal device according to claim 3, wherein 5. The terminal device according to claim 1, wherein the terminal is formed narrower from the distal end to the intermediate portion than the base end. 6. The terminal is mounted on a mounting surface provided near the tip from the intermediate portion and connected by soldering, and a hole is provided in the intermediate portion. The terminal device according to claim 5. 7. The elongated hole having a length from the bent portion to the opening edge on the distal end side along the lead-out direction of the terminal longer than the opening size from the opening edge on the base end side. The terminal device according to claim 6, wherein: 8. The terminal is mounted on a mounting surface provided near the tip from the intermediate portion and connected by soldering, and a hole is provided on the mounting surface. The terminal device according to any one of claims 1, 2 and 5, wherein 9. The terminal device according to claim 1, wherein the terminal is provided with a groove along the width direction at the intermediate portion. 10. 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. . 11. The terminal is mounted and soldered on a mounting surface provided near the front end from the intermediate portion, and the concave portion is provided on the mounting surface. The terminal device according to claim 10. 12. A terminal comprising: a base on which an electric component is arranged; and a terminal connected to the electric component and led out of the base and bent at an intermediate portion in a direction orthogonal to an outer side surface of the base. In the device manufacturing method, the terminal is bent along a boundary of the solder after solder is attached to a surface from a tip end to the intermediate portion.