JP2018022855A5 - - Google Patents

Description

Electronic components and electronic component seats

The present invention relates to an electronic component having a pair of lead terminals and a seat plate for the electronic component.

In an electronic component such as a chip-type electrolytic capacitor that is surface-mounted on an electronic circuit board, the end surface of the electronic component body that houses the element and projects a pair of lead terminals that are electrically connected to the element and have a flat surface The electronic component seat plate is placed on the flat plate surface of the pair of lead terminals, the electronic component seat plate is attached to the end surface of the electronic component body, and the flat surface of the bent lead terminal is the surface of the electronic component. Since it is surface-mounted on the circuit board, when the pair of lead terminals are bent, it is necessary to expose or protrude the surface of the flat plate surface of the pair of lead terminals at a predetermined position.

As an electronic component in which the lead terminal is bent and the electronic component seat plate is mounted on the end surface of the electronic component main body, for example, in Patent Document 1, the protruding portion of the lead wire (lead terminal) connected to the component element is plate-shaped. A notch ( through hole 2a in FIG. 2) through which the lead wire passes is formed in the insulator (seat plate for electronic parts) formed, and a recess (concave) connected to the notch on the outer surface of the insulator Groove), the concave portion is made narrower from the center to the outside, and the protruding portion of the lead wire penetrating the notch portion is bent (bent) so as to fit in the concave portion. There have been proposed electronic components that are formed with the leading edge protruding from the insulator.

However, in the proposal of Patent Document 1, the shape of the recess is such that the groove width at the center is wider than the lead wire width, but the lead wire is bent without being inserted in the direction along the groove width of the recess. In addition, it is necessary to consider that the surface of the lead wire (lead terminal) is exposed or protruded at a predetermined position along the surface of the insulator (the electronic component seat plate) and the concave portion (the concave groove) .

Further, in Patent Document 2, the lead terminal is press-molded into a flat band plate shape, and a resin seat plate (electronic component seat plate) is connected to a lead insertion hole (a through hole into which the lead terminal is inserted) and a lead. A guide groove (concave groove) is formed, and this lead terminal is formed with a bending groove. When the lead terminal is inserted into the lead insertion hole and bent, the bending terminal causes the lead terminal to be bent. Electronic parts that reduce the occurrence of springback have been proposed.

However, in the proposal by patent document 2 , when the lead terminal is inserted in a direction not along the lead guide groove in the lead insertion hole of the seat plate and is bent by the bending groove of the lead terminal, It is necessary to consider that the surface is exposed or protruded at a predetermined position along the lead guide groove (concave groove) .

JP-A-2-17624 JP 2000-21682 A

The present invention accommodates the element, the element and the electrical connection has been for electronic parts seat plate by bending said pair of lead terminals on an end surface of the electronic component main body which is protruded a pair of lead pin having a flat surface It is an object of the present invention to provide an electronic component seat plate in which the flat plate surface of the pair of lead terminals is exposed or protruded at a predetermined position.

According to a first aspect of the present invention, there is provided a pair of electronic component seat plates in which a bottomed cylindrical case containing an element is closed by a sealing body and is electrically connected to the element. In a seat plate for an electronic component having a flat surface formed of a synthetic resin material that is mounted on an end surface of an electronic component body in which a lead terminal protrudes from the sealing body, the through hole for inserting the pair of lead terminals, An electronic component seat plate comprising a pair of recessed grooves extending in a direction away from and communicating with the through hole, wherein the inner peripheral wall of the through hole is formed in a curved shape larger than the width of the recessed groove. A boundary portion with the concave groove is formed in a straight edge shape and is orthogonal to the concave groove. 3. The electronic component seat plate according to claim 2, wherein the open end of a bottomed and cylindrical case containing the element is closed with a sealing body, and a pair of lead terminals electrically connected to the element. In the electronic component seat plate having a flat surface formed of a synthetic resin material that is mounted on the end surface of the electronic component main body protruding from the sealing body, the through hole for inserting the pair of lead terminals and the through hole And a pair of concave grooves extending in a direction away from each other, wherein the inner peripheral wall of the through hole is formed in a curved shape and is formed on both sides of the boundary portion with the concave groove. It is formed in the shape of a straight edge and orthogonal to the concave groove . The electronic component according to claim 3 is a pair of lead terminals having a flat plate surface that is electrically connected to the element by closing an opening end of a bottomed cylindrical case containing the element with a sealing body. An electronic component in which the electronic component seat plate according to claim 1 or 2 is mounted on an end surface of an electronic component main body that is protruded from the sealing body, and includes a bottomed and cylindrical case that houses an element. 3. The electronic component according to claim 1, wherein an opening end is closed with a sealing body, and a pair of lead terminals that are electrically connected to the element and have a flat surface are protruded from the sealing body on the end surface of the electronic component body. An electronic component equipped with a seat plate, wherein the pair of lead terminals are inserted into the through holes and protruded from the electronic component seat plate, and the flat surface of the pair of lead terminals is a boundary with the concave groove. said pair of lead terminals are bent along the groove at the site Characterized in that to fit in the groove.

The seat plate for an electronic component according to the present invention closes the open end of a bottomed, cylindrical case containing an element with a sealing body, and connects a pair of lead terminals electrically connected to the element to the sealing body. In the electronic component seat plate having a flat surface formed of a synthetic resin material that is mounted on the end surface of the electronic component main body that protrudes from the through hole, the through hole into which the pair of lead terminals are inserted and the through hole are separated from each other. A seat plate for an electronic component comprising a pair of concave grooves extending in a direction in which the inner peripheral wall of the through hole is formed in a curved shape larger than the width of the concave groove and a boundary with the concave groove The part is formed in a straight edge shape and the through hole is orthogonal to the concave groove, or the inner peripheral wall of the through hole is formed in a curved shape and the straight edge is formed on both sides of the boundary part with the concave groove. The through hole is orthogonal to the concave groove. Therefore, a pair of lead terminals having a flat plate surface can be easily inserted into the through hole, and the flat plate surface of the lead terminal is bent by a pressing process at a boundary portion with the concave groove to be an electronic component seat. It is possible to accurately fit in the groove of the plate.

It is a top view which shows the seat plate for electronic components in Embodiment 1 of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a top view which shows the seat plate for electronic components in Embodiment 2 of this invention. It is a top view which shows the electronic component using the seat plate for electronic components of Embodiment 1 of this invention. It is an expanded sectional view of the A section of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is sectional drawing which shows the operation | work state which bends a lead terminal with the electronic component using the seat plate for electronic components of Embodiment 1 of this invention. It is a top view which shows the seat plate for electronic components in Embodiment 3 of this invention. It is EE sectional drawing of FIG. It is FF sectional drawing of FIG. It is sectional drawing which shows the seat plate for electronic components in Embodiment 4 of this invention. It is sectional drawing which shows a part of electronic component using the seat plate for electronic components in Embodiment 4 of this invention. It is sectional drawing which shows the base plate for electronic components in Embodiment 5 of this invention. It is sectional drawing which shows a part of electronic component using the seat plate for electronic components in Embodiment 5 of this invention. It is a top view which shows the electronic component using the seat plate for electronic components of Embodiment 3 of this invention. It is GG sectional drawing of FIG. It is HH sectional drawing of FIG. It is sectional drawing which shows the operation | work state which bends a lead terminal with the electronic component using the seat plate for electronic components of Embodiment 3 of this invention. It is sectional drawing which shows the whole electronic component using the seat plate for electronic components of Embodiment 3 of this invention.

(Embodiment 1 of electronic component seat plate)
The electronic component seat plate of the present invention will be described with reference to FIGS.

1 to 3, an electronic component seat plate 6 is used for an electronic component such as a chip-type electrolytic capacitor that is surface-mounted on an electronic circuit board, and is attached to an end surface (upper surface in FIG. 9) of the electronic component main body 10. It is molded with a synthetic resin material so that it can be mounted. One side (upper surface in FIGS. 2 and 3) of the electronic component seat plate 6 is a flat surface, and a pair of through-holes 5 and 5 through which the pair of lead terminals 4 and 4 having a flat plate surface are inserted, and the through-holes. A pair of concave grooves 7 and 7 extending in a direction communicating with and separating from the holes 5 and 5 are formed. The outer shape of the electronic component seat plate 6 is rectangular, but both corners on one side (left side in FIG. 1) are cut away so as to indicate the polarities of the through holes 5 and 5. The synthetic resin material for molding the electronic component seat 6 is an electrically insulating and heat-resistant synthetic resin material such as PBT resin (polybutylene terephthalate resin) or PPS resin (polyphenylene sulfide resin). Thermosetting resins such as thermoplastic resins such as epoxy resins and phenolic resins. The shape of each of the pair of through holes 5, 5 exemplifies a D shape, and the inner peripheral walls of the through holes 5, 5 are formed in a curved shape larger than the width of the concave grooves 7, 7 , The pair of lead terminals 4, 4 can be easily inserted into the through holes 5, 5 without being deformed, and the boundary portions 5 A, 5 A with the concave grooves 7, 7 are formed in a straight edge shape, The grooves 7 and 7 are orthogonal to each other. Accordingly, the straight edges of the boundary portions 5A and 5A with the concave grooves 7 and 7 of the pair of through holes 5 and 5 are arranged in parallel to each other, and the surface of the flat plate surface of the pair of lead terminals 4 and 4 Can be exposed or protruded at a predetermined position. Further, the depth of the concave grooves 7 and 7 can be exposed or protruded on the one surface of the electronic component seat plate 6 so that the flat surface (see FIG. 7) of the lead terminals 4 and 4 can be surface-mounted on the electronic circuit board. Any size is acceptable. Although one surface of the electronic component seat plate 6 is shown to be a flat surface and the other surface is also a flat surface, a protruding wall for hanging a part of the periphery of the electronic component seat plate 6 is formed. It may be.

(Embodiment 2 of seat plate for electronic parts)
FIG. 4 shows a different embodiment of the electronic component seat plate. Hereinafter, a different part from the first embodiment will be described.

In FIG. 4, the pair of through holes 5 , 5 are formed so that the inner peripheral walls thereof are curved and the straight edges are left on both sides of the boundary portions 5 A, 5 A with the concave grooves 7, 7. As in the first embodiment, the flat surfaces of the pair of lead terminals 4 and 4 are arranged in parallel with each other so that the surfaces of the flat surfaces can be exposed or protruded at predetermined positions. Even if the pair of lead terminals has a curved shape such as a round bar at the end of the end, the lead terminals 4 and 4 are not deformed from the end of the end to the through holes 5 and 5. It is easy to insert into and can be applied . In addition, the auxiliary terminal plate 81 made of a metal material is integrally formed on both sides of the intersecting direction of the concave grooves 7 and 7, and the surface of the auxiliary terminal plate 81 is exposed or protruded in the vicinity of the concave grooves 7 and 7. The lead terminals 4 and 4 disposed in the grooves 7 and 7 can be surface-mounted on the electronic circuit board. The material of the metal material of the auxiliary terminal plate 81 is a metal material that can be soldered similarly to the material of the lead terminal 4, and examples thereof include aluminum (including alloy), copper (including alloy), and stainless steel.

(Embodiment of electronic component using seat plate for electronic component)
FIGS. 5 to 9 show an electronic component using an electronic component seat plate in which an auxiliary terminal plate is not disposed in a pair of concave grooves as in the first and second embodiments, and will be described below.

5 to 9, the electronic component seat plate 6 is mounted on the end surface of the electronic component main body 10. The electronic component main body 10 includes a pair of lead terminals that have a flat plate surface that is electrically connected to the element 3 by closing the open end of a bottomed cylindrical case 1 containing the element 3 with a sealing body 2. 4 and 4 are configured to protrude from the sealing body 2. In the electronic component main body 10, the opening end of the cylindrical case 1 made of a metal material is caulked and bonded to a sealing member 2 made of a rubber material, a synthetic resin material, or a combination of a rubber material and a synthetic resin material, and the electronic component main body. 10 is sealed. The flat surface of the pair of lead terminals 4 and 4 protrudes from the end surface (upper surface in FIG. 9) of the electronic component body 10 so as to face each other at a substantially uniform interval. As shown in FIG. 9, the electronic component seat plate 6 has a pair of through holes 5, 5. The electronic component seat plate 6 is placed on the end surface of the electronic component body 10. The pair of lead terminals 4, 4 are projected from the pair of through holes 5, 5 of the electronic component seat plate 6, and the pair of lead terminals 4, 4 are bent in directions away from each other (arrow direction in FIG. 9). At this time, each through hole 5 has an inner peripheral wall formed in a curved shape larger than the width of each concave groove 7, and a boundary portion 5 </ b> A with the concave groove 5 is formed in a straight edge shape so as to be orthogonal to the concave groove 7. Since the flat surfaces of the lead terminals 4 and 4 are bent by press working with reference to the boundary portion 5A, the lead terminals 4 and 4 are accurately placed in the concave groove 7, and as a result, An electronic component is obtained in which the surface of the flat surface of the lead terminal 4 is exposed or protruded at a predetermined position. In this case, the depth of the groove 7 is such that the flat surface of the lead terminal 4 can be exposed or projected on one flat surface of the electronic component seat plate 6 so that the flat surface of the lead terminal 4 can be surface-mounted on the electronic circuit board.

(Embodiment 3 of electronic component seat plate)
FIG. 10 to FIG. 12 are different embodiments of the electronic component seat plate, and hereinafter, different portions from the first embodiment will be described.

10 to 12, an electronic component seat plate 61 is used for an electronic component such as a chip-type electrolytic capacitor that is surface-mounted on an electronic circuit board as in the first embodiment, and the end surface of the electronic component main body 10 (see FIG. The auxiliary terminal plate 8 made of a metal material and a synthetic resin material are integrally formed so as to be attached to the upper surface 20 in FIG. The auxiliary terminal plate 8 includes a bottom plate 8A disposed on the bottom wall of the concave groove 7, a side plate 8B connected to the bottom plate 8A and raised along the side wall of the concave groove 7, and a side plate 8B connected to the side plate 8B. And a surface plate 8 </ b> C extending in a direction intersecting with. The surface plate 8C rises from the bottom wall of the groove 7 and extends in a direction intersecting the groove 7 so that the surface plate 8C is exposed or protrudes from the surface of the electronic component seat plate 61 and the side plate 8B. In addition, it is molded integrally with the synthetic resin material. In this case, the bottom plate 8 </ b> A disposed on the bottom wall of the concave groove 7 is illustrated as extending from the through hole 5, but may be extended from a portion away from the through hole 5. Examples of the metal material of the auxiliary terminal plate 8 include aluminum (including alloy), copper (including alloy), and stainless steel. The external shape and the synthetic resin material of the electronic component seat plate 61 are the same as those of the first embodiment, and the through hole 5 is also D-shaped and orthogonal to the groove 7 as in the first embodiment. The depth of the concave groove 7 communicating with the hole 5 is deeper than the depth of the concave groove 7 shown in the first embodiment by a size corresponding to the thickness of the bottom plate 8 A of the auxiliary terminal plate 8. It is sufficient that the flat surface is surface-mounted on the electronic circuit board and the surface of the flat surface can be exposed or protruded on one surface (see FIG. 18) of the electronic component seat plate 61.

(Embodiment 4 of electronic component seat plate)
FIG. 13 shows a different embodiment of the electronic component seat plate, and hereinafter, a different part from the third embodiment will be described.

In FIG. 13, a concave surface portion 7 </ b> A is formed in the bottom wall of the pair of concave grooves 7, 7 at a depth opposite to the pair of through holes 5, 5 at the end portion (peripheral edge portion of the electronic component seat plate 61). Then, the bottom plate 8A of the auxiliary terminal plate 8 disposed on the bottom wall of the concave groove 7 is extended to form the two-level plate 8D on the concave surface portion 7A of the end portion of the bottom plate 8A. It is disposed on the bottom wall and molded integrally with the synthetic resin material. In this case, the auxiliary terminal plate 8 is formed with a surface plate 8C connected to the bottom plate 8A disposed on the bottom wall of the groove 7 as in the third embodiment. Although the bottom plate 8 </ b> A disposed on the bottom wall of the concave groove 7 is illustrated as extending from the through hole 5, it may be extended from a portion away from the through hole 5. Further, the bottom plate 8A of the auxiliary terminal plate 8 is extended and a two-step plate 8D is disposed on the concave portion 7A. However, the lead terminals 4 and 4 are not provided with the two-step plate 8D, and the concave portions 7A. You may make it press-contact to. Further, although not shown, the concave groove 7 formed with the concave surface portion 7A is applied to the electronic component seat plate 6 in which the auxiliary terminal plate 8 is not disposed in the pair of concave grooves 7, 7 as in the first embodiment. May be.

FIG. 14 shows a pair of lead terminals 4, 4 protruding from the through-hole 5 in a pair of concave grooves 7, 7 that extend from the bottom plate 8 </ b> A of the auxiliary terminal plate 8 to form a two-stage plate 8 </ b> D. 4 shows a part of an electronic component obtained by press-contacting 4 to the bottom plate 8A of the auxiliary terminal plate 8 and press-working the lead terminal 4 at the portion of the two-step plate 8D to be bent in two steps. When the lead terminal 4 is pressed at the portion of the two-stage plate 8D in this way, even if the lead terminal has a curved shape at the end of the end of the lead terminal 4, the end of the lead terminal 4 in the electronic component seat plate 61 It can be applied so that the concave surface 4A along the portion of the second plate 8D is formed .

(Embodiment 5 of electronic component seat plate)
FIG. 15 shows a different embodiment of the electronic component seat plate. Hereinafter, a different part from the third embodiment will be described.

In FIG. 15, a convex surface portion 7B having a shallow depth near the pair of through holes 5, 5 is formed on the bottom wall of the pair of concave grooves 7, 7, and ends opposite to the pair of through holes 5, 5. A concave surface portion 7A having a deep depth is formed in the portion (peripheral edge portion of the electronic component seat plate 61). In this case, the height of the convex surface portion 7B may be substantially the same as the thickness of the bottom plate 8A of the auxiliary terminal plate 8. The bottom plate 8A of the auxiliary terminal plate 8 is extended from the vicinity of the convex surface portion 7B to the concave surface portion 7A to form a two-step plate 8D on the concave surface portion 7A, and the bottom plate 8A and the second step plate 8D are formed into the concave grooves 7, 7 The synthetic resin material is molded integrally with the bottom wall. In this case, the auxiliary terminal plate 8 is formed with a surface plate 8C connected to the bottom plate 8A disposed on the bottom wall of the groove 7 as in the third embodiment. In addition, the shape of the bottom wall 7 which formed the convex surface part 7B, without forming the concave surface part 7A may be sufficient.

FIG. 16 shows a part of an electronic component in which the lead terminal 4 protruding from the through hole 5 is bent on the bottom plate 8A of the auxiliary terminal plate 8 and the lead terminal 4 is pressed to the bottom plate 8A and the second plate 8D via the convex surface portion 7B. Show. Since the lead terminal 4 is bent through the convex surface portion 7B in this way, the repulsive force acting on the lead terminal 4 after bending is reduced, the occurrence of springback is reduced, and the exposed surface of the flat plate surface of the predetermined lead terminal 4 is exposed. Or a protrusion is obtained. Further, the lead terminal 4 is pressed at the portion of the two-stage plate 8D as in the fourth embodiment, and a concave surface 4A is formed at the end portion of the lead terminal 4 in the electronic component seat plate 61 . The springback phenomenon that occurs after bending is further reduced.

(Embodiment of electronic component using seat plate for electronic component)
FIGS. 17 to 21 show an electronic component using a seat plate for an electronic component in which an auxiliary terminal plate is disposed in a pair of concave grooves as in the third, fourth, and fifth embodiments, and will be described below.

17 to 21, the electronic component is mounted with an electronic component seat 61 on the end surface of the electronic component main body 10. The electronic component body 10 includes a pair of lead terminals 4, 4 electrically connected to the element 3 by closing the open end of a bottomed cylindrical case 1 containing the element 3 with a sealing body 2. It is configured to protrude from the sealing body 2. In the electronic component main body 10, the opening end of the cylindrical case 1 made of a metal material is caulked and bonded to a sealing member 2 made of a rubber material, a synthetic resin material, or a combination of a rubber material and a synthetic resin material, and the electronic component main body. 10 is sealed. A pair of lead terminals 4, 4 have a flat plate surface on the end surface (the upper surface in FIGS. 20 and 21) of the electronic component body 10, and the flat plate surfaces face each other at substantially uniform intervals. As shown in FIG. 20, a pair of through holes 5 and 5 are formed in the electronic component seat plate 61, and the electronic component seat plate 61 is placed on the end surface of the electronic component main body 10. The lead terminals 4, 4 are projected from the pair of through holes 5, 5 of the electronic component seat plate 61, and the pair of lead terminals 4, 4 are bent in directions away from each other (arrow direction in FIG. 20). At this time, each through hole 5 has an inner peripheral wall formed in a curved shape larger than the width of each concave groove 7 and a boundary portion 5A with the concave groove 5 is formed in a straight edge shape so that the concave groove 7 is formed in the through hole. since 5 that can by orthogonal, lead terminals 4 that are bent, as shown in FIG. 21, will be fit in pressure contact with the bottom plate 8A of the auxiliary terminal plate 8 disposed in the concave groove 7, the As a result, an electronic component in which the surface of the flat surface of the lead terminal 4 is exposed or protruded at a predetermined position can be obtained. In this case, the depth of the groove 7 is exposed on the flat surface on one side of the electronic component seat plate 61 so that the flat surface of the lead terminal 4 can be surface-mounted on the electronic circuit board via the bottom plate 8A of the auxiliary terminal plate 8. The size can be projected .

In the present invention, the lead terminal 4 and the auxiliary terminal plates 8 and 81 are exposed or protruded by the electronic component seat plates 6 and 61 by being soldered to the circuit board so that surface mounting is possible. The difference between the surface of the flat surface of the lead terminal 4 and the surface of the auxiliary terminal plate 81 and the surface plate 8C of the auxiliary terminal plate 8 or the surface of the auxiliary terminal plate 81 and the surface plate 8C of the auxiliary terminal plate 8 and the electronic component seat plate 6 , 61 or the difference between the flat surface of the lead terminal 4 and the flat surface of the electronic component seat plates 6, 61 is preferably 0.1 mm or less.

The present invention is used for an electronic component having a capacitor element, a battery element or a semiconductor element that is surface-mounted on a circuit board via electronic component seat plates 6 and 61 having lead terminals of the present invention.

DESCRIPTION OF SYMBOLS 1 Case 2 Sealing body 3 Element 4 Lead terminal 5 Through-hole 6, 61 Electronic component seat plate 7 Concave groove 8, 81 Auxiliary terminal plate 10 Electronic component main body

Claims (3)

The open end of a bottomed cylindrical case containing the element is closed with a sealing body, and a pair of lead terminals electrically connected to the element are projected from the end face of the electronic component main body protruding from the sealing body. In a seat plate for an electronic component having a flat surface formed of a synthetic resin material to be attached, a through hole into which the pair of lead terminals are inserted and a pair of concave grooves extending in a direction away from and communicating with the through hole The inner peripheral wall of the through hole is formed in a curved shape larger than the width of the concave groove, and the boundary portion with the concave groove is formed in a straight edge shape, A seat plate for electronic parts, characterized by being orthogonal to the groove. The open end of a bottomed cylindrical case containing the element is closed with a sealing body, and a pair of lead terminals electrically connected to the element are projected from the end face of the electronic component main body protruding from the sealing body. In a seat plate for an electronic component having a flat surface formed of a synthetic resin material to be attached, a through hole into which the pair of lead terminals are inserted and a pair of concave grooves extending in a direction away from and communicating with the through hole The inner plate of the through hole is formed in a curved shape and is formed in a straight edge shape on both sides of a boundary portion with the concave groove, and is orthogonal to the concave groove. The electronic component seat plate. An electronic component in which an open end of a bottomed cylindrical case containing an element is closed with a sealing body, and a pair of lead terminals which are electrically connected to the element and have a flat plate surface are projected from the sealing body An electronic component having the electronic component seat plate according to claim 1 or 2 mounted on an end surface of the main body, wherein the pair of lead terminals are inserted into the through holes and protruded from the electronic component seat plate. electronic component, characterized in that to fit the pair of lead terminals in said groove the flat plate surface of the pair of lead terminals are bent along the groove at a boundary portion between said groove.