JP2010033827A - Terminal base, and connector with built-in electronic circuit adopting the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal base with small size, which can assemble a large number of electronic components simply and certainly without using a soldering device (solderless). <P>SOLUTION: A terminal base 8 is fabricated which houses integrally a connecting arm 10 connected electrically to a conduction part of an electronic component 7 and a conductive lead frame 12 containing a terminal 4 inside by insert-molding of an insulating resin, and this terminal base 8 is used as one sidewall of a connector with a built-in electronic circuit. The connecting arm 10 elastically deforms and is electrically connected by coming into contact with the conduction part of the electronic component 7 when the electronic component 7 is assembled into the terminal base 8, and further, a connecting arm support part 11 is installed adjacent to the connecting arm 10, and this connecting arm support part 11 suppresses the connecting arm 10 from displacing in a direction separating from the conduction part in a state in contact with the conduction part of the electronic component 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a small and inexpensive terminal base on which electronic parts such as chip parts are assembled, and an electronic circuit built-in connector employing the terminal base.

<Conventional connector configuration>
A conventional connector will be described with reference to FIGS.
FIG. 7 is a side sectional view showing a conventional connector.
In FIG. 7, a conventional connector 101 includes a housing 102 formed of an insulating member and contact pins 103 embedded and held in the housing 102. Of the end portions of the contact pin 103, the first end portion 103a protruding into the first recess 102a of the housing 102 is connected to a socket (not shown) of a socket side connector to which a signal line or the like is connected. Functions as a terminal.
On the other hand, the second end 103b, which is the other end of the contact pin 103, functions as a connection terminal for connecting the connector 101 to a printed wiring board (not shown) or the like.

  Furthermore, a chip component mounting portion 105 to which a chip component 104 such as a chip capacitor or a chip jumper is detachably mounted is provided in the second recess 102b formed in the upper surface portion of the housing 102. The chip component mounting portion 105 includes a pin side terminal 106 connected to the contact pin 103 and a ground side terminal 107 grounded to the ground.

FIG. 8 is an equivalent circuit diagram of the connector shown in FIG. 7 and shows a state where a chip capacitor is assembled to the chip component mounting portion.
In FIG. 8, noise conducted from the end 103a or the second end 103b of FIG. 7 to the contact pin 103 bypasses the chip capacitor 104a assembled to the chip component mounting unit 105 and is eliminated to the ground.
Japanese Patent Laid-Open No. 11-86980

<Disadvantages of conventional connectors>
However, with such conventional technology, it is necessary to newly provide a connector housing and contact pins in accordance with the size, type, and number of chip parts to be assembled, so the size, type, and number of chip parts to be assembled have changed. Then, it became necessary to change the whole connector.
In addition, it is not easy to provide a protrusion for connecting a chip component to a contact pin, and it is not easy to incorporate such a specially shaped contact pin into a connector housing.

As another conventional technique, there is one in which a chip component is mounted on a printed circuit board that constitutes a necessary electric circuit, and is embedded in a connector.
However, in such a conventional technique, in addition to the basic connector assembling process, a chip component reflow soldering process is required to assemble the chip part on the printed circuit board, resulting in an increase in cost.
In another conventional technique, a complicated process such as soldering is required for electrical connection between a contact for connecting a connector or a connector board assembly terminal and a printed circuit board, and the cost similarly increases. Decided to do.

Accordingly, the present invention provides a small and inexpensive terminal base that can easily and reliably assemble a large number of electronic components such as chip components without using a reflow soldering apparatus (without soldering). An object of the present invention is to provide an electronic circuit built-in connector that employs the above.
In addition, the present invention is capable of strengthening the electrical connection portion with the conductive portion of the electronic component in a complex manner, and can be firmly supported and fixed so that the assembled electronic component is not detached. The purpose is to provide an inexpensive terminal base.

  In order to achieve the above object, (1) the present invention relates to a terminal base, comprising: a resin member in which an electronic component is assembled at a predetermined site; and a circuit pattern, a connector terminal, and a connection arm accommodated in the resin member by insert molding. In the terminal base including the conductive lead frame, the connection arm is elastically deformed by bringing the electronic component into the resin member and comes into contact with the conductive portion of the electronic component so that the electronic component is electrically connected to the electronic component. Are connected to each other.

  (2) Further, the present invention provides the terminal base according to (1), wherein the resin member includes a connection arm support portion adjacent to the connection arm in a state where the electronic component is assembled, and the connection arm support The portion is characterized in that the connection arm is prevented from being displaced in a direction away from the conductive portion of the electronic component.

  (3) Further, the present invention is characterized in that, in the terminal base of the above (2), the connection arm support portion has an elongated shape shorter than the arm length of the connection arm.

  (4) Furthermore, the present invention provides the terminal base according to any one of (1) to (3), wherein the resin member includes a holding arm at a portion adjacent to a portion where the electronic component is assembled. When the electronic component is assembled, it is elastically deformed in the direction opposite to the electronic component, and after the electronic component is assembled, the electronic component is returned and held in the electronic component direction.

  (5) Furthermore, the present invention is characterized in that, in the terminal base of the above (4), a retaining protrusion that is engaged with the top end of the electronic component is formed at the tip of the holding arm. It is.

  (6) The present invention relates to an electronic circuit built-in connector, a cylindrical housing formed of an insulating member, a metal shell attached to cover the outer periphery of the housing, and a terminal base covering the back surface of the housing. The terminal base according to any one of the above (1) to (5) is adopted as the terminal base.

As a result, an electronic component such as a chip component can be assembled (without soldering) on a resin member, which is a constituent unit of the connector with a built-in electronic circuit, without using a reflow soldering apparatus.
In addition, even if the size, type, and number of chip parts to be assembled are changed, it can be dealt with by changing the required part of the resin member, which is one component unit of the connector with built-in electronic circuit, and changing other parts of the connector Therefore, the cost can be reduced.

  Further, when an electronic component such as a chip component is assembled to the resin member, the connection arm tends to be elastically displaced to make electrical contact with the conductive portion of the electronic component. Supports the displacement and compensates for the electrical contact between the connection arm and the electronic component, so the connection arm can be made of a thinner sheet metal conductive material, which reduces costs. Become.

Furthermore, even if it is necessary to remove any electronic component such as a chip component due to a failure, etc., the necessary electronic component such as a chip component can be removed by releasing the holding against the elastic force of the holding arm. Can reduce the cost.
In addition, since the holding arm is formed of resin, it is possible to form holding arms in various forms according to the shape, structure, and characteristics of electronic parts such as chip parts.

Next, an embodiment of the present invention will be described with reference to FIGS.
<Configuration of connector with built-in electronic circuit>
FIG. 1 is a perspective view showing an electronic circuit built-in connector according to the present invention, and FIG. 2 is a plan view (a), a front view (b), and a side sectional view (c) of the electronic circuit built-in connector of FIG. FIG. 3 is an exploded perspective view showing components of the electronic circuit built-in connector of FIG.
1 to 3, an electronic circuit built-in connector 1 (FIG. 1) covers a rectangular tube-shaped housing 2 (FIG. 3) that is formed of an insulating member and has an open front surface and a back surface, and an outer periphery of the housing 2. The metal shell 3 (FIG. 3) attached in this manner, the terminal base 8 (FIG. 3) according to the present invention attached so as to cover the rear opening of the housing 2, and a state in which one end is fitted in the terminal base 8 And a terminal 4 (FIG. 3) accommodated in the housing 2. The terminal base 8 according to the present invention includes a resin member to which the electronic component 7 (FIG. 3) is assembled at a predetermined portion, and a conductive pattern including a circuit pattern, a connector terminal, and a connection arm accommodated in the resin member by insert molding. A lead frame, and by incorporating the electronic component 7, the connecting arm is elastically deformed to come into contact with the conductive portion of the electronic component 7 and to be electrically connected to the electronic component 7 without soldering.
The metal shell 3 (FIG. 3) includes an elastic piece 6 for elastically engaging with the electronic circuit built-in connector 1 and another grounding ground plate or metal panel.

<Configuration of terminal base 8>
The terminal base 8 is insert-molded so as to embed a lead frame 12 (FIG. 4) including a conductive lead frame including a circuit pattern, a connector terminal, and a connection arm, starting from the end portion of the terminal 4 inside the resin. Thus, an electronic component holding portion for storing the electronic component 7 such as a chip component, a holding arm adjacent to the electronic component holding portion, and a connection arm supporting portion adjacent to the connection arm are formed by insert molding. 4A and 4B are perspective views illustrating the structure of the terminal base 8 in the order of the manufacturing process. FIG. 4A is an overall view of a lead frame die-cut from a thin metal conductive material, and FIG. 4B is an insulating resin. (C) is a terminal base in which unnecessary parts are cut from the terminal base of the final product, and (d) is a terminal base in which electronic parts 7 such as predetermined chip parts are assembled. ing.
In FIG. 4A, reference numeral 12 denotes a lead frame 12 which is die-cut from a thin metal conductive material, and cuts and raises a necessary portion after being die-cut. Reference numeral 10 denotes one connection arm having a characteristic feature of the present invention.
The connection arm 10 is a member for electrically connecting to the conductive portion of the electronic component 7 such as a chip component, and there are two types. One is a vertical connection arm 10a vertically cut from the punched lead frame 12, and the other is a horizontal connection arm 10b extending in the horizontal plane of the lead frame 12 while being punched.
In this way, the connection arm 10 can select one of the vertical connection arm 10a and the horizontal connection arm 10b according to the shape and position of the conductive portion of the electronic component to be assembled.
Reference numeral 13 denotes a circuit pattern for electrically connecting necessary portions, and reference numeral 16 denotes a contact fitting portion (to be described later) for electrically connecting and sandwiching the end of the contact 5 when one end of the contact 5 (FIG. 3) is inserted. 14 is a carrier strip necessary for conveying the lead frame 12 through the manufacturing process.

In FIG. 4B, the lead frame 12 including the circuit pattern 13, the vertical connection arm 10a, the horizontal connection arm 10b, and the like is embedded in the resin at the end of the terminal 4 shown in FIG. 4A. The terminal base 8 is completed by insert molding.
According to the present invention, the terminal base 8 is electrically connected to the electronic component holding portion 15 for storing the electronic component 7, the holding arm 9 adjacent thereto, and the conductive portion of the electronic component fitted in the component holding portion 15. A connecting arm 10 and a connecting arm support 11 that supports the connecting arm 10 are provided.

  In FIG. 4C, unnecessary portions of the terminal base 8 of the final product, such as the carrier strip 14 of the lead frame 12 and a part of the circuit pattern, are removed to complete the terminal base 8 as the final product.

  In FIG. 4D, electronic components 7 (five electronic components and four chip components in FIG. 3) such as predetermined chip components are fitted into the respective electronic component holding portions 15 of the terminal base 8 so as to be electronic. The terminal base with built-in electronic circuit, which forms the core of the built-in circuit connector, is completed.

<Relationship Between Electronic Component Holding Unit 15 and Holding Arm 9>
Returning to FIG. 4B, the terminal base 8 holds an electronic component 7 such as a chip component and is surrounded by a peripheral wall standing up to the height of the electronic component so as not to fall off. Are formed at a plurality of locations. Further, a holding arm 9 according to the present invention that presses the top end of the electronic component 7 so that the electronic component 7 does not fall off is formed at a position facing the electronic component 7, and the tip of the holding arm 9 can be elastically deformed. A retaining projection 9a (FIG. 5) is provided.
When the electronic component 7 is fitted into the electronic component holding portion 15, the electronic component 7 comes into contact with the retaining projection 9 a at the tip of the retaining arm 9, and the retaining projection 9 a is widened by pushing it open. As a result, the electronic component 7 is assembled to the electronic component holding unit 15. When the electronic component 7 is assembled to the electronic component holding portion 15, the retaining protrusion 9 a returns to the restoring position and engages with the top end portion of the electronic component 7 to function as a removal prevention.
The shape and thickness of the electronic component holding unit 15 can be appropriately designed in consideration of the size, weight, frequency of attachment / detachment of the electronic component 7 such as a chip component to be assembled.

FIG. 5 is a detailed view of the terminal base 8 to which an electronic component 7 such as a chip component is assembled. (A) is a plan view, (b) is a front view, and (c) is a cross-sectional view taken along line AA in (a). (D) is a side view, (e) is BB sectional drawing of (a).
5A to 5D, each electronic component holding portion 15 of the terminal base 8 has an electronic component 7 such as a chip component (five electronic components (parts having a large bulk and area)) and four chip components. (Parts with small bulk and flat area)).
It can be seen that a holding arm 9 is disposed adjacent to each electronic component holding portion 15, and a retaining protrusion 9 a at the tip of the holding arm 9 engages with the top end portion of the electronic component 7 and functions as a removal prevention.

<Relationship between Vertical Connection Arm 10a and Connection Arm Support 11>
It can be seen that a connection arm support portion 11 that restricts the movement of the connection arm 10 is formed adjacent to the vertical connection arm 10a in the connection arm 10 of FIG. 4A (note that the horizontal connection arm 10b is shown in FIG. 5). As shown in FIG. 4D, when the electronic component 7 such as a chip component is assembled, the elastic connecting arm 10a that is in electrical contact with the conductive portion of the electronic component 7 is directed outward (on the anti-electronic component side). If it is received, it may be bent, so it could not be made with a thin metal plate, and it had to be made with a metal plate with a certain thickness.
However, by disposing the connection arm support portion 11 according to the present invention adjacent to the anti-electronic component side of the connection arm 10a, the displacement toward the outer side of the connection arm 10a is supported in a restrained manner, and thereby the connection arm 10a is supported. It becomes possible to form a thinner sheet metal conductive material.
If the height of the connection arm support portion 11 is the same as the height of the connection arm 10a, the degree of freedom of the connection arm 10a is reduced outward, and if it is slightly lower than the height of the connection arm 10a, the connection arm 10a is outside. Increased freedom of orientation. The height can be appropriately designed in consideration of the height, thickness, rigidity, etc. of the connection arm 10a.

<Relationship between horizontal connection arm 10b and connection arm support 11>
FIG. 5 (e) is a diagram for explaining the support of the horizontal connection arm 10b extending in the horizontal plane of the lead frame 12, and a connection arm support portion 11 for regulating the movement of the connection arm 10b is formed adjacent to the horizontal connection arm 10b. I understand that. When the electronic component 7 such as a chip component is assembled, the elastic connection arm 10 that is in electrical contact with the conductive portion of the electronic component 7 may be bent when it receives an outward force (on the anti-electronic component side). Therefore, it was not possible to make a thin metal plate, but by disposing the connection arm support 11 according to the present invention adjacent to the anti-electronic component side of the connection arm 10b, the outward displacement of the connection arm 10b can be reduced. Thus, the connection arm 10b can be formed of a thinner sheet metal conductive material.

Which of the vertical connection arm 10a and the horizontal connection arm 10b is adopted is appropriately determined depending on where the conductive portion of the electronic component 7 such as the chip component is located. That is, the vertical connection arm 10a is used when the conductive part of the electronic component 7 when assembled is at the top or the side, and the horizontal connection arm 10b is used when the conductive part of the electronic component 7 is at the bottom.
In this case, in any case, the connection arm support portion is disposed adjacent to the anti-electronic component side of the vertical connection arm 10a or the horizontal connection arm 10b.

<Relationship between contact 5 and contact fitting portion 16>
Returning to FIG. 5A, reference numeral 16 denotes a contact fitting portion for electrically connecting and sandwiching the end portion of the contact 5 when one end of the contact 5 (see FIG. 3) is inserted. 12 (see FIG. 4) is formed when the sheet metal conductive material is punched, and includes an elastic clamping piece 16d (FIG. 6) that cuts and raises a corresponding portion of the lead frame 12. Since the contact fitting portion 16 can electrically connect the contact 5 to the terminal base 8 only by inserting one end of the contact 9, a troublesome soldering process is not necessary here either.

FIG. 6 shows the adjoining relationship between the connection arm 10 (example of 10a) and the connection arm support portion 11 and the engagement between the electronic component 7, the holding arm 9, and the electronic component holding portion 15, which are characteristic configurations according to the present invention described above. It is a conceptual perspective view explaining the relationship and the fitting relationship between the contact 5 and the contact fitting portion 16 in an easily understandable manner.
<Adjacent relationship between the connection arm 10 (10a) and the connection arm support 11>
In the figure, a connection arm support portion 11 which is one of the characteristic configurations of the present invention for restricting the movement of the connection arm 10a is formed adjacent to the vertical connection arm 10a. When the electronic component 7 is assembled to the electronic component holding portion 15, the conductive portion 7d of the electronic component 7 and the connection arm 10a come into contact with each other, so that an electrical connection is formed, and conventional soldering becomes unnecessary. In addition, by disposing the connection arm support portion 11 adjacent to the anti-electronic component side of the connection arm 10a, the displacement of the connection arm 10a toward the outside is restrained, thereby making the connection arm 10a a thinner sheet metal conductor. It becomes possible to form the material. Although the example of the vertical connection arm 10 is described in FIG. 6, the function of the connection arm support portion 11 is the same in the horizontal connection arm 10b except that the direction of the arm (vertical and horizontal) is different. Description of is omitted.
<Engagement relationship among electronic component 7, holding arm 9, and electronic component holding portion 15>
Further, the electronic component holding portion 15 is formed with a holding arm 9 which is one of the characteristic configurations of the present invention, and a retaining projection 9 a which can be elastically deformed is provided at the tip of the holding arm 9. When the electronic component 7 is fitted into the electronic component holding part 15, the electronic component 7 pushes and opens the retaining protrusion 9a, so that the retaining protrusions 9a are elastically deformed in a direction in which the distance between them is increased. The component 7 is assembled to the electronic component holding portion 15, and the retaining protrusion 9 a is engaged with the top end portion of the electronic component 7 to prevent the component 7 from being detached.
<Fitting relationship between contact 5 and contact fitting portion 16>
Further, since the contact fitting portion 16 is provided with the elastic pinching piece 16d cut and raised, when one end of the contact 5 is inserted, the end portion of the contact 5 and the elastic pinching piece 16d are firmly in contact with each other. Therefore, a time-consuming soldering process is not necessary.

As described above, the electronic circuit built-in connector according to the present invention includes a connection arm accommodated by insert molding of an insulating resin, so that an electronic circuit such as a chip component is attached to the terminal base which is a component unit of the electronic circuit built-in connector. Since the parts can be assembled without using a reflow soldering apparatus, the cost can be reduced.
In addition, even if the size, type, or number of chip parts to be assembled is changed, it can be dealt with by changing the necessary part of the terminal base, which is a component unit of the connector with built-in electronic circuit, and changing other parts of the connector. Therefore, the cost can be reduced.

  The connector with built-in electronic circuit of the present invention includes a connection arm support portion adjacent to the connection arm on the terminal base, so that when the electronic component such as a chip component is assembled on the terminal base, the connection arm is electrically connected to the electronic component. The contact arm is elastically displaced to make contact, but the displacement is restrained and compensates for the force of electrical contact between the connection arm and the electronic component. It can be made of a conductive material and can be made thinner and smaller.

Furthermore, the connector with built-in electronic circuit according to the present invention includes a holding arm on the terminal base, so that an electronic component such as a chip component can be assembled to the terminal base, which is a component unit of the connector with built-in electronic circuit, without using a reflow soldering apparatus. In addition, even if it becomes necessary to remove any electronic component such as a chip component due to a failure or the like, the necessary electronic components such as the chip component can be released by releasing the holding against the elastic force of the holding arm. Since parts can be removed, costs can be reduced.
Further, since the holding arm is formed of resin, it is possible to form holding arms in various forms according to the characteristics of electronic parts such as chip parts.

It is a perspective view which shows embodiment of the connector with a built-in electronic circuit of this invention. It is the top view (a) of FIG. 1, a front view (b), and a side sectional view (c). It is a disassembled perspective view which shows the component of the connector with a built-in electronic circuit. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the structure of the terminal base 8 in order of a manufacturing process, (a) is the whole figure of the lead frame stamped out from the sheet metal conductive material, (b) is insert molding the lead frame with the insulating resin. A terminal base formed in this manner, (c) shows a terminal base in which unnecessary portions are cut from the terminal base of the final product, and (d) shows a terminal base on which electronic parts 7 such as predetermined chip parts are assembled. FIG. 2 is a detailed view of the terminal base 8 on which an electronic component 7 such as a chip component is assembled, and is a plan view (a), a front view (b), a cross-sectional view A-A in the plan view (a), and a side view (d). ) Is a cross-sectional view (e) taken along the line BB of the plan view (a). There is no figure description. There is no figure description. There is no figure description. There is no figure description. It is side surface sectional drawing which shows the conventional connector. FIG. 8 is an equivalent circuit diagram of the connector shown in FIG. 7 in which a chip capacitor is assembled to the chip component mounting portion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector with built-in electronic circuit 2 Housing 3 Metal shell 4 Terminal 5 Contact 6 Elastic piece 7 Electronic circuit 7d of chip components etc. Conductive part 8 Terminal base 9 Holding arm 9a Retaining protrusion 10 Connection arm 10a Vertical connection arm 10b Horizontal connection arm 11 Connection arm support part 12 Lead frame 13 Circuit pattern 14 Carrier strip 15 Electronic component holding part 16 Contact fitting part 16d Elastic clamping piece

Claims (6)

In a terminal base including a resin member in which an electronic component is assembled at a predetermined site, and a conductive lead frame including a circuit pattern, a connector terminal, and a connection arm accommodated in the resin member by insert molding,
A terminal base characterized in that the connection arm is elastically deformed by incorporating the electronic component into the resin member, contacts the conductive portion of the electronic component, and is electrically connected to the electronic component without soldering.   The resin member includes a connection arm support portion adjacent to the connection arm in a state where the electronic component is assembled, and the connection arm support portion is displaced in a direction away from the conductive portion of the electronic component. The terminal base according to claim 1, wherein the terminal base is suppressed.   The terminal base according to claim 2, wherein the connection arm support portion has an elongated shape shorter than an arm length of the connection arm.   The resin member includes a holding arm at a portion adjacent to a portion where the electronic component is assembled, and the holding arm is elastically deformed in a direction opposite to the electronic component when the electronic component is assembled, and the electronic component is assembled. The terminal base according to claim 1, wherein the terminal base is held back by returning to the electronic component direction.   The terminal base according to claim 4, wherein a retaining protrusion that engages with a top end of the electronic component is formed at a tip of the holding arm.   An electronic circuit built-in connector comprising: a cylindrical housing formed of an insulating member; a metal shell attached to cover the outer periphery of the housing; and a terminal base covering the back surface of the housing. An electronic circuit built-in connector characterized by adopting the terminal base according to any one of claims 1 to 5.

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