JP2011187284A - Connector with built-in electronic part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector with a built-in electronic part excellent in a connection reliability between an electronic component and a terminal. <P>SOLUTION: The connector with a built-in electronic part has an electrode 21A of an electronic component 20 connected by soldering to a terminal fitting 40, and the terminal fitting 40 includes a soldering face part 42 to be soldered to the electrode 21A of the electronic component 20 and on the soldering face part 42, there is formed a plurality of contact projecting parts 43 toward the electrode 21A in an identical height. The electrode 21A and the soldering face part 42 of the terminal fitting 40 are soldered with a solder filled up in a gap between both members generated by the plurality of contact projecting parts 43 abutting on the electrode 21A. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic component built-in connector.

  Conventionally, a capacitor built-in connector described in Patent Document 1 is known as an electronic component built-in connector. This is connected to an electric wire routed in a vehicle such as an automobile, and has a function of removing noise by grounding the vehicle body via a capacitor. As a configuration, terminals are respectively fixed to both poles of a capacitor accommodated in a housing made of an insulator, and one terminal is connected to, for example, a vehicle defogger circuit, and the other terminal is a panel portion of the vehicle. Grounded. The defogger circuit is body-grounded to the panel portion via a capacitor, and noise is removed.

JP 2006-173414 A

  By the way, in the above capacitor built-in connector, the electrode surface of the capacitor and the connection surface of the terminal have a flat surface shape, and the terminal is soldered with the connection surface being in close contact with the electrode surface of the capacitor. Fixed.

  However, if the flat surfaces are fixed by soldering in this way, the solder 3 does not uniformly enter between the electrode surface 1 of the capacitor and the connection surface 2 of the terminal as shown in FIG. May be fixed in a tilted state. Also, if there is a slight gap between the electrode surface and the connection surface that prevents solder from entering, air is trapped in the gap, and there is a concern that the connection reliability of the terminal to the capacitor may be reduced. It was.

  The present invention has been completed based on the above situation, and an object thereof is to provide an electronic component built-in connector having excellent connection reliability between an electronic component and a terminal.

  The present invention is an electronic component built-in connector formed by connecting a terminal fitting to an electrode of an electronic component by soldering, wherein the terminal fitting is soldered to a flat surface formed on the electrode of the electronic component. A plurality of abutting protrusions projecting at the same height toward the flat surface of the electrode, the flat surface of the electrode, and the soldering surface portion of the terminal fitting. Is characterized in that solder is filled and soldered in a gap between the two members generated by the contact of the plurality of contact protrusions with the flat surface.

  According to such a configuration, the contact protrusion formed on the soldering surface portion contacts the flat surface of the electrode, and has a width equivalent to the height of the contact protrusion between the soldering surface portion and the flat surface. By ensuring the gap in advance, the solder can be uniformly filled in the gap. As a result, it is possible to prevent partial air accumulation or soldering in a state in which the terminal fitting is inclined with respect to the electronic component, thereby improving connection reliability. .

  The electronic component is a capacitor, and the terminal fitting includes a wire connection terminal having one end connected to the wire side and the other end fixed to the capacitor, and one end connected to a ground portion and the other end fixed to the capacitor. Preferably, the soldering surface portion is formed at least on the ground connection terminal.

  The protruding direction of the abutting protrusion and the extending direction of the terminal fitting having the abutting protrusion may be the same direction. If a certain gap is provided in the same direction as the protruding direction of the contact protrusion, compared to the conventional case where the distance between the soldered surface portion and the flat surface of the electrode varies due to, for example, soldering, It is possible to keep the dimension from the electronic component to the end of the terminal fitting constant. Thus, by keeping the gap between the soldering surface portion and the flat surface of the electrode constant, the dimensional accuracy of the entire electronic component built-in connector having terminal fittings extending in the same direction as the width of the gap can be improved.

  It is desirable that the contact protrusion be in point contact with the flat surface of the electrode. For example, when the abutting protrusion comes into surface contact with the flat surface of the electrode, the solder partially enters the gap, thereby causing an air pocket between the abutting protrusion and the flat surface of the electrode, or the abutting protrusion. There is a possibility that the connection reliability may be lowered by tilting and fixing the portion and the flat surface of the electrode. On the other hand, in the present invention, the contact protrusion is in point contact with the flat surface of the electrode, so that no gap is formed between the contact protrusion and the flat surface of the electrode, and the soldering surface portion of the terminal fitting And the flat surface of the electrode of the electronic component can be kept constant.

  The contact protrusion may be formed by knurling the soldering surface portion. Formability can be improved by forming the contact protrusion by knurling.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic component built-in connector excellent in the connection reliability of an electronic component and a terminal can be provided.

The front view of the main-body part which comprises the capacitor built-in connector which concerns on one Embodiment of this invention. Side view of the main unit Side view of the main unit viewed from the ground connection terminal side AA sectional view of FIG. Side view of the capacitor built-in connector viewed from the wire connection terminal side BB sectional view of FIG. Partial enlarged sectional view showing a state in which there is a poor soldering between the electrode surface of the capacitor and the connection surface of the terminal in the conventional example

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS.
This embodiment exemplifies a capacitor built-in connector 10 to which a capacitor 20 is applied as an electronic component. The capacitor built-in connector 10 is connected to a defogger circuit or the like disposed in a vehicle such as an automobile, and removes noise in the circuit. The configuration includes the capacitor 20 shown in FIG. A main body portion including a wire connection terminal 30 connected to one electrode and connectable to a female terminal fitting connected to a circuit (not shown), and an earth connection terminal 40 connected to the other electrode of the capacitor 20 and grounded to the vehicle body. 11 and a connector housing 12 that houses the main body 11 shown in FIGS. 5 and 6. In the following description, the ground connection terminal 40 side is the front, the wire connection terminal 30 side is the rear, the front side in FIG. 1, 2, and 6, the solder 50 used for soldering is not shown in order to easily display the soldered portion between the capacitor 20 and the ground connection terminal 40.

  As shown in FIGS. 1 and 2, the capacitor 20 constituting the main body 11 is formed into a column having an oval cross section, and electrodes 21 having flat surfaces are provided at both ends in the front-rear direction. Among the electrodes 21, the front end side is a ground side electrode 21 </ b> A that fixes the ground connection terminal 40, and the rear end side is a wire side electrode 21 </ b> B that fixes the wire connection terminal 30.

  The wire connection terminal 30 is made of a conductive metal, and is formed into a flat electrode connection portion 31 fixed to the wire side electrode 21B of the capacitor 20 by soldering, welding, or the like, and is bent into an L shape from the electrode connection portion 31. , And two tab portions 32 that branch backward and extend. The two tab portions 32 are electrically connected to the circuit by being inserted into the female terminal fitting connected to the circuit on the other side.

  The ground connection terminal 40 is made of a conductive metal, and has a flat ground fixing portion 41 and a shape cut and raised from the ground fixing portion 41, and a soldering surface portion 42 fixed to the ground side electrode 21A of the capacitor 20. Composed. An attachment hole 41A is formed in the ground fixing portion 41, and is fixed by a bolt to a screw hole (not shown) provided in a vehicle body panel or the like serving as a grounding portion. The front end portion of the ground fixing portion 41 is provided with a locking piece portion 41B that is bent downward. It is possible to prevent the ground connection terminal 40 from rotating with respect to the vehicle body by fitting the locking piece 41B into a groove provided near a screw hole (not shown).

  The soldering surface portion 42 has a plate shape arranged along the ground-side electrode 21A having a flat surface, and three contact protrusions 43 that bulge toward the ground-side electrode 21A are formed on the plate surface. ing. Each of the contact protrusions 43 has a substantially hemispherical shape so that the ground side electrode 21A side is the top, and is formed at a position that is a vertex of a substantially equilateral triangle as shown in FIG. When the contact protrusion 43 makes point contact with the ground electrode 21A, a gap having a width equivalent to the protrusion height of the contact protrusion 43 is generated between the soldering surface portion 42 and the ground electrode 21A. The gap 50 is filled with solder 50, and the soldering surface portion 42 and the ground side electrode 21A are fixed by soldering.

  The connector housing 12 that accommodates the main body 11 having the above-described configuration is made of synthetic resin and has a substantially box shape as shown in FIGS. The hood portion 13 that opens to the rear of the connector housing 12 and holds the tab portion 32 therein has a configuration in which a female terminal fitting connected to a circuit can be inserted. A housing space 14 in which the main body 11 can be inserted from the tab 32 side is formed in front of the connector housing 12. Although not shown, the accommodating space 14 is filled with a potting material in a state where the main body portion 11 is accommodated in the connector housing 12, and waterproofness is ensured between the connector housing 12 and the main body portion 11.

Then, the effect | action in this embodiment is demonstrated.
In order to fix the ground connection terminal 40 to the ground side electrode 21A of the capacitor 20, first, the soldering surface portion 42 of the ground connection terminal 40 is aligned with the ground side electrode 21A. At this time, the contact protrusion 43 formed on the soldering surface portion 42 contacts the ground electrode 21A, and a gap having a width equivalent to the protrusion height of the contact protrusion 43 is formed between the two members. Is in a state. Subsequently, the gap between the ground side electrode 21A and the soldering surface portion 42 is filled with the solder 50, thereby fixing the ground side electrode 21A and the soldering surface portion 42 by soldering. Thus, by filling the gap between the ground side electrode 21A formed in advance and the soldering surface portion 42 with the solder 50, the ground connection terminal 40 is maintained at a constant interval with respect to the ground side electrode 21A. Soldered.

  Further, the main body 11 completed by fixing the electric wire connection terminal 30 to the electric wire side electrode 21B by soldering or the like is accommodated in the connector housing 12. Specifically, the main body 11 is inserted into the housing space 14 of the connector housing 12 from the wire connection terminal 30 side. In order to push the main body 11 into the housing completion position of the connector housing 12 as shown in FIG. 6, the soldering surface portion 42 of the ground connection terminal 40 is pressed from the front. After the main body portion 11 is accommodated in the connector housing 12 in this way, the accommodating space 14 is filled with a potting material (not shown) up to a position flush with the front end portion of the connector housing 12. The filling of the potting material (not shown) ensures waterproofness between the main body 11 and the connector housing 12.

  As described above, according to the present embodiment, the contact protrusion 43 provided on the soldering surface portion 42 contacts the ground side electrode 21A, so that the contact between the soldering surface portion 42 and the ground side electrode 21A occurs. A gap having a width equivalent to the protrusion height of the protrusion 43 can be secured in advance. As a result, when the soldering surface portion 42 of the ground connection terminal 40 is soldered to the ground side electrode 21A of the capacitor 20, the solder 50 can be uniformly filled in the gap. It is possible to prevent air from being trapped in the gap when the solder 50 does not enter due to too little gap between them or when the solder 50 partially enters. Further, by performing soldering in a state where the three contact protrusions 43 are in point contact with the ground-side electrode 21A, the gap between the soldering surface portion 42 and the ground-side electrode 21A can be more stably secured. Therefore, it is possible to prevent the soldering surface portion 42 from being fixed while being inclined with respect to the ground-side electrode 21A. In this way, by preventing the soldering failure such that the ground side electrode 21A and the soldering surface portion 42 are soldered in an inclined state or air is trapped during the soldering, the holding strength of the soldered portion is increased. It is possible to improve the connection reliability.

  Further, in the present embodiment, the protruding direction of the contact protrusion 43 and the extending direction of the ground connection terminal 40 are the same direction, and the gap between the ground side electrode 21A and the soldering surface portion 42 is the length of the connector 10 with built-in capacitor. There is a relationship that affects the dimension of the direction. By making the width of the gap that influences this dimension constant by providing the contact protrusion 43 in advance, the dimensional accuracy of the capacitor built-in connector 10 in the longitudinal direction can be improved.

  In addition, by providing three contact protrusions 43 and arranging the contact protrusions 43 at positions where the apexes of the substantially equilateral triangle are provided, the soldering surface portion 42 can be brought into contact with the ground-side electrode 21A more stably. In addition, since the contact protrusion 43 is formed by causing the contact protrusion 43 to bulge into a substantially hemispherical shape, the contact protrusion 43 makes point contact with the ground electrode 21A. It is possible to improve the connection reliability more surely without causing an air reservoir between the contacts or soldering defects such as being fixed by tilting when solder partially enters.

  Furthermore, the soldering surface portion 42 of the ground connection terminal 40 is a portion that is pressed when the main body portion 11 is accommodated in the connector housing 12. That is, the soldering portion between the soldering surface portion 42 and the ground side electrode 21 </ b> A is required to have a higher holding strength than the electrode connecting portion 31 of the wire connection terminal 30 by the amount pressed. By improving the connection reliability of the soldered portion, it is possible to prevent a problem that the ground connection terminal 40 is peeled off from the capacitor 20 due to insufficient holding strength when the main body 11 is accommodated in the connector housing 12. .

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above-described embodiment, the capacitor 20 is illustrated as an example of the electronic component. However, the present invention is not limited to this, and can be applied to, for example, a resistor.

  (2) In the above-described embodiment, the contact protrusion 43 is formed only on the soldering surface portion 42. However, the present invention is not limited to this. For example, the contact protrusion is also formed on the electrode connection portion 31 of the wire connection terminal 30. And the form which fixes the electrode connection part 31 and the electric wire side electrode 21B by soldering may be sufficient. According to such a configuration, the dimensional accuracy in the longitudinal direction of the capacitor built-in connector 10 can be further improved.

  (3) In the above-described embodiment, the contact protrusion 43 has a substantially hemispherical shape that protrudes toward the ground-side electrode 21A. However, the present invention is not limited to this. A large number of contact protrusions may be formed by knurling. If the contact protrusion is formed in this way, it can be easily formed, and the accuracy control of the protrusion height of the contact protrusion can be facilitated.

  (4) In the above-described embodiment, the soldering has been described with an example in which a worker performs a so-called manual soldering operation using a soldering iron. However, the present invention is not limited to this. For example, soldering is performed by a flow method or a reflow method. It may be a thing.

10 ... Connector with built-in capacitor (Connector with built-in electronic components)
DESCRIPTION OF SYMBOLS 11 ... Main-body part 12 ... Connector housing 13 ... Hood part 14 ... Storage space 20 ... Capacitor (electronic component)
21 ... Electrode 21A ... Earth side electrode (electrode)
21B ... Electric wire side electrode 30 ... Electric wire connection terminal 31 ... Electrode connection portion 32 ... Tab portion 40 ... Earth connection terminal (terminal fitting)
41 ... Earth fixing part 42 ... Soldering surface part 43 ... Abutting protrusion 50 ... Solder

Claims (5)

An electronic component built-in connector formed by connecting a terminal fitting to an electrode of an electronic component by soldering,
The terminal fitting includes a soldering surface portion to be soldered to a flat surface formed on the electrode of the electronic component, and the soldering surface portion has a plurality of contacts protruding at the same height toward the flat surface of the electrode. A bump is formed,
The flat surface of the electrode and the soldering surface portion of the terminal fitting are soldered by filling the gap between the two members generated by the contact of the plurality of contact protrusions with the flat surface. An electronic component built-in connector characterized by The electronic component is a capacitor,
The terminal fitting includes a wire connection terminal having one end connected to the electric wire side and the other end fixed to the capacitor, and an earth connection terminal having one end connected to the ground portion and the other end fixed to the capacitor.
The electronic component built-in connector according to claim 1, wherein the soldering surface portion is formed at least on the ground connection terminal.   The electronic component built-in connector according to claim 1, wherein a protruding direction of the contact protrusion and an extending direction of the terminal fitting having the contact protrusion are the same direction.   4. The electronic component built-in connector according to claim 1, wherein the contact protrusion makes point contact with a flat surface of the electrode. 5.   5. The electronic component built-in connector according to claim 1, wherein the contact protrusion is formed by knurling the soldering surface portion. 6.

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