JP2000357553A - Connector for electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a connector for an electronic apparatus having a connector pin, capable of preventing creeping-up of flux. SOLUTION: This connector for an electronic apparatus has a contact part 121 at one end and a soldering part 122 at the other end, and a non-continuous part such as a dowel 123 is formed on the contact part 121 side of the soldering part 122 of plural connector pins 100A in which the contact parts 121 are arranged and supported on one side of a fixing board in a non-contact state at specified intervals to prevent creeping-up of soldering flux applied to the soldering part 122 to the contact part 121.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for an electronic device for electrically connecting a device body and a peripheral device in an electronic device such as a video device, an audio device, a game device, etc., and in particular, main components thereof. This is related to the structure of the connector pin.

[0002]

2. Description of the Related Art First, referring to FIGS.
The structure of a conventional electronic device connector will be described. FIG.
6 is a perspective view of an external appearance of a connector for a conventional electronic device, FIG. 6 is a top view as viewed from an arrow A shown in FIG. 5, FIG. 7 is a front view as viewed from an arrow B shown in FIG. FIG. 9 is a bottom view as viewed from an arrow C shown in FIG. 5, FIG. 9 is a rear view as viewed from an arrow D shown in FIG. 5, FIG. 10 is a side view as viewed from an arrow E shown in FIG.
1 is a cross-sectional view taken along line AA shown in FIG. 5, FIG. 12 is an exploded perspective view showing an exploded main part of the connector shown in FIG. 5, and FIG. 13 is used for a connector of the prior art. FIG. 2A is a perspective view of the connector pin, and FIG. 2B is a cross-sectional view taken along line AA of FIG.

[0003] Hereinafter, a 53905-1215 type square connector (12P) manufactured by Molex Japan will be described as an example of a conventional connector for electronic equipment (hereinafter simply referred to as "connector"). In FIG.
Reference numeral 1 indicates the connector 1 as a whole. The connector 1 includes a plurality of connector pins 2, a mounting board 3 that supports these connector pins 2, and a guide plate 4.
, Shell 5, case 6, upper shell 7 and lower shell 8.

As shown in FIG. 13, the connector pin 2 has a narrow, flat plate-like pin structure which is bent substantially at a right angle at an intermediate portion. The upper part (horizontal part) shown is the contact part,
The lower portion (vertical portion) indicated by reference numeral 22 is a soldering portion,
The portion indicated by reference numeral 23 is a bent portion. As shown in FIG. 13B, a bead 24 having a concave groove is formed in the soldering portion 22 in the vertical direction in order to increase the rigidity of the soldering portion 22. In this type of connector 1, a plurality of types of the connector pins 2 are provided, and two types of the connector pins 2 are provided in the illustrated example. The reason for this will be described later.

The mounting board 3 is a molded product in which a pin receiving portion 31 and a mounting portion 32 are integrally formed of an insulating resin as shown in FIG. This pin receiver 3
Reference numeral 1 denotes a wide plate to which a plurality of connector pins 2 can be attached and which is long enough to support the contact portions 21 of the connector pins 2, and has a plurality of mutually parallel concave grooves 33 formed on an upper surface thereof. The mounting portion 32 is formed at the base end of the pin receiving portion 31 so as to be slightly wider.

In the groove 33 of the pin receiving portion 31, for example, a connector pin 2 having a long contact portion 21 is buried every other groove. The connector pin 2 having a short contact portion 21 is embedded. In this manner, the plurality of connector pins 2 are
1, the soldering portions 22 of the plurality of connector pins 2 bent at right angles and having long contact portions 21 are located rearward, and the plurality of connector pins having short contact portions 21 are provided. The two soldering portions 22 are arranged in a zigzag manner so as to be located slightly forward of the former, and thus the space between the adjacent soldering portions 22 can be widened.

The guide plate 4 is also a component integrally formed of an insulating resin, and has a plurality of through holes 41 and 42 into which the soldering portions 22 of the plurality of connector pins 2 can be inserted and supported. I have. These through holes 41,
42 are formed in two rows at predetermined intervals, and the plurality of through-holes 41 in one row are arranged and formed in zigzag so as to be located between the other plurality of through-holes 42. Therefore, the soldering portions 22 of the plurality of connector pins 2 arranged in a zigzag as described above can be inserted into the respective through holes 41 and 42, and are supported by the guide plate 4 at the above-mentioned intervals.

The shell 5 is a metal component for mounting the mounting board 3 in which a plurality of connector pins 2 are embedded, and covers the left, right, upper and lower sides of a pin receiving portion 31 of the mounting board 3, and has a cross section in front. A tube 51 having a rectangular opening, a plate 52 covering the back of the mounting portion 32 of the mounting board 3 and the soldering portion 22 at the rear, and a lower portion extending from both ends of the tube 51 to provide an electronic circuit in the electric device. It has a structure including an engaging claw 53 for attaching to a substrate or the like. Therefore, the cylinder 51 covers the pin receiving portion 31 of the mounting board 3 in which the plurality of connector pins 2 are embedded, and the plate 5
The two portions cover the mounting substrate 3 behind the mounting portion 32 and the soldering portion 22.

The case 6 has an opening 6 having a rectangular section at the front.
1 is formed, and a receiving section 6 having a rectangular cross section from which a rear bottom surface is removed.
2, a resin-molded integrated structure comprising: a mounting plate 63 for attaching to an electronic device on both sides of the housing portion 62; and an engagement plate 64 formed on the bottom surface of the housing portion 62, The accommodating portion 62 accommodates the mounting board 3 on which the connector pins 2 are mounted and the shell 5. The guide plate 4 is attached to the bottom surface that has come off, and the contact portions 21 of the plurality of connector pins 2 are completely To cover.

The upper shell 7 is a pressing spring for fixing to an electronic device. The lower shell 8 is a component that is mounted on the shell 5 by mounting the mounting board 3 on the bottom of the cylinder 51 of the shell 5 by pressing against the bottom of the cylinder 51 by the spring force.

The connector 1 according to the prior art has the structure as outlined above. When such a connector 1 is attached to an electronic device, a soldering flux is applied to the soldering portion 22 of the connector pin 2 as a pre-soldering process, and the surface of the soldering portion 22 is coated by applying the flux. The solder wettability is improved, and the mounting plate 63 of the case 6 is fixed to a predetermined position of the electric device with screws or the like, and the soldering portion 22 is soldered to a circuit wiring portion of an electronic circuit board (not shown). And attached to electrical equipment.

The connector 1 mounted in this manner is
The other connector 9 shown in FIG. 5 is inserted into the opening 61, and the pin receiving portion 31 of the connector 1 is inserted.
The connector pin 91 of the inserted connector 9 comes into contact with the contact portion 21 of the connector pin 2 which is exposed to the outside, and both are connected.

[0013]

However, as described above, the flux applied to the soldering portions 22 of the respective connector pins 2 to improve the solder wettability of the surface thereof is large when the applied amount is large. Accumulate in the bead 24.
The accumulated flux creeps up along the bead 24 to the contact portion 21 of the connector pin 2 due to the rise in the temperature of soldering, and the connector pin 91 of the mating connector 9.
Contact failure may occur. In order to prevent such inconveniences, at present, the flux application and the soldering temperature conditions are controlled to prevent the flux from climbing up. However, this management is not easy.

An object of the present invention is to solve such a problem, and an object of the present invention is to obtain a connector for an electronic device having a connector pin capable of preventing a flux from rising.

[0015]

Accordingly, in the electronic device connector according to the present invention, a contact portion is formed at one end, and a soldering portion is formed at the other end. Soldering applied to the soldering portion on the soldering portion side of the soldering portion of the plurality of connector pins in which the contacting portions are arranged and supported on one surface side of the mounting board in a non-contact state. The above-mentioned problem is solved by forming a discontinuous portion for preventing the flux for use from creeping up to the contact portion side. In the electronic device connector according to the second aspect of the present invention, the lengths of the contact portions are different from each other, and the soldering portions are formed with substantially the same length. It is composed of a plurality of types of connector pins that are bent to have the same length. The bent portions are arranged in a zigzag state on the base end side of the mounting board, and the soldered portions are also arranged in a zigzag state and supported from the bent portions of the plurality of connector pins. The problem is solved by forming a discontinuous portion between the contact portion side of the soldering portion and preventing a soldering flux applied to the soldering portion from creeping up to the contact portion side. are doing. and again,
According to a third aspect of the present invention, there is provided an electronic device connector according to the present invention, wherein the discontinuous portion of the electronic device connector according to the first and second aspects is formed in a dowel shape. I have. Furthermore, in the electronic device connector of the present invention according to claim 4, the discontinuous portion in the electronic device connector according to claim 1 or 2 is formed in a tapered shape, and the problem is solved. Has been resolved. Furthermore, in the electronic device connector of the present invention according to claim 4, the discontinuous portion in the electronic device connector according to claim 1 or 2 is formed by zigzag formation, and Has been resolved.

Therefore, according to the first aspect of the present invention, when the flux is applied to the soldered portion of the connector pin, the discontinuous portion is in the vertical direction (downward) due to the own weight of the crawled flux. And the flux can be prevented from climbing further. According to the second aspect of the present invention, in addition to the above-described effects, the interval between the soldering portions of the adjacent connector pins can be widened. Therefore, contact between adjacent connector pins can be prevented, and when the width of the discontinuous portion is narrow, a large number of connector pins can be arranged close to each other. According to the third aspect of the present invention, in addition to the above-described effects, the discontinuous portion has a dowel structure.
The connector pins can be formed relatively small, and the connector pins can be provided relatively densely. Furthermore, according to the present invention as set forth in claim 4, it is more preferable to use a connector in which a plurality of connector pins are arranged in a plurality of rows, and in addition to the above-described effects, the discontinuous shape portion has a tapered structure. This makes it possible to relatively narrow the front-rear spacing of the plurality of rows and to configure a connector having a short depth. Further, according to the present invention as set forth in claim 5, this is also more preferable to be used for a connector in which a plurality of connector pins are arranged in a plurality of rows, and in addition to the above-described effects, a discontinuous shape portion is provided. With the zigzag projection structure, since it does not protrude so much in the width direction and in the front-rear direction, the front-rear spacing of the plurality of rows and the adjacent spacing in the row can be made relatively narrow, and therefore, the plurality of connector pins can be relatively formed. The connector can be provided densely, has a short depth, and has a relatively small width and a relatively small connector.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connector pin according to an embodiment of the present invention will be described below with reference to the drawings. In the following description, only the connector pins used in the connector of the present invention will be illustrated and described. FIG. 1 shows a first preferred embodiment used for the connector of the present invention.
FIG. A is a plan view of the connector pin, FIG. B is a cross-sectional view taken along line AA of FIG.
FIG. 2 shows a connector pin of a second embodiment suitable for use in the connector of the present invention. FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. FIG. 4A shows a connector pin suitable for use in the connector of the embodiment, FIG. 4A is a plan view thereof, FIG. 5B is a side view thereof, and FIG. 4 is various embodiments of the present invention shown in FIGS. 6 is a graph showing the effect of preventing the flux from climbing up by the connector pin of FIG.

First, the connector pins of the first embodiment which are suitable for use in the connector of the present invention shown in FIG. 1 will be described. The connector pin 100A is provided with a dowel 123 at a very small part of the soldered portion 122 on the contact portion 121 side as a discontinuous portion for preventing the flux from creeping up to the contact portion side. The dowel 123 has a Z-shape in plan view in the width direction of the soldering portion 122 and has a structure protruding in the thickness direction (or depressed when viewed from the opposite surface).

Therefore, by making the discontinuous portion of the connector pin 100A a dowel structure, the connector can be formed relatively small and the connector pins can be provided relatively densely.

As an example of the dimensions of the connector pin 100A, the thickness is 0.3 mm and the width is 1.2 over almost the entire length.
mm, the total length is 20 mm, and the position where the dowel 123 is formed is 6.7 to 7.3 m from the tip of the connector pin 100A.
m. The protrusion height of the dowel 123 is 0.15 mm.

Next, a connector pin 100B of a second embodiment suitable for use in the connector of the present invention shown in FIG.
As a discontinuous portion for preventing the flux from creeping up to the contact portion side, the soldered portion 122B is formed in a structure in which the solder portion 122B is tapered in the width direction from the tip portion toward the contact portion 121 side. It is.

Accordingly, the connector pin 100B having this structure
Is more suitable for use in a connector in which a plurality of connector pins are arranged in a plurality of rows. The connector can be made narrower and a connector with a shorter depth can be configured.

As an example of the dimensions of the connector pin 100B, a thickness of 0.3 mm, a width of the contact portion 121 of 1.2 mm,
The total length is 20 mm, and the length of the tapered portion 122B is 10 mm from the tip of the connector pin 100B.
Has a width of 0.7 mm, the widest width of the tapered portion 122B is 2.4 mm, and the length of the soldering portion 122 is about 2 mm from the distal end.

A connector pin 100C according to a third embodiment suitable for use in the connector of the present invention shown in FIG.
The zigzag projection 1 is formed on a very small portion of the soldering portion 122 on the contact portion 121 side as a discontinuous portion for preventing the soldering flux from creeping up to the contact portion 121 side.
24 was formed. This zigzag projection 124
3B, as shown in FIG. 3B, has a structure in which the protrusions having the same height as the Z-shape when viewed from the side are formed in the thickness direction of the soldering portion 122.

As an example of the dimensions of the connector pin 100C, the thickness is 0.3 mm and the width is 1.2 over almost the entire length.
mm, the overall length is 20 mm, and the position where the zigzag protrusion 124 is formed is 4.5 to 4.5 mm from the tip of the connector pin 100C.
It is formed at a position of 5 mm. The zigzag protrusion 12
4 has a protrusion height of 0.3 mm on one side.

Therefore, this is also more suitable for use in a connector in which a plurality of connector pins B are arranged in a plurality of rows, and since the discontinuous portion is formed in a zigzag projection structure, it protrudes so much in the width direction and in the front-rear direction. Since it is not possible, the front and rear intervals of the plurality of rows and the adjacent intervals in the rows can be relatively narrow,
Accordingly, a plurality of connector pins 100C can be provided relatively densely, and a relatively short connector having a short depth and a small width can be configured.

Although the connector pins 100A, 100B, and 100C of any of the above-described embodiments are shown in a linear structure in the drawing, when they are incorporated in the connector 1, the respective contact portions 121 are formed at substantially right angles. It goes without saying that it is bent to form the same structure as the connector pins 2. Further, the length of the contact portion 121 is also determined by the soldering portion 122.
It is needless to say that when it is necessary to arrange the zigzags in a zigzag manner as in the case of the connector 1 and to increase the interval between adjacent ones, a plurality of different lengths may be selected.

FIG. 4 shows the effect of preventing the flux from climbing up in the connector pin having the discontinuous portion according to the above-described three embodiments in comparison with the conventional connector pin 2. The experimental method is as follows: 3 mm of the tip of the soldering part of each connector pin is immersed in a flux liquid whose temperature has been adjusted, left for 3 minutes, then taken out of the flux liquid, dried, and the end where the flux liquid creeps up from the tip This is a method of measuring the distance to 20 ° C, 30
FIG. 4 is a graph shown in FIG. 4, which was measured at each of the temperatures of 40 ° C., 40 ° C., and 50 ° C., plotted, and approximated by the least square method.

From the graphs shown in FIG.
In the connector pin 100A in which the three structures are formed, regardless of the temperature conditions, the connector pin 100A can be used at room temperature or at a high temperature of 50 ° C.
It can be seen that the maximum height of the connector pins 2 of the prior art is about 75%. Further, the connector pin 100B and the zigzag protrusion 1 formed in a taper structure
It can be seen that even with the connector pin 100C having the 24 structure formed, it is possible to suppress the height of the connector pin 2 of the related art to about 70 to 80% of that of the conventional connector pin 2.

Therefore, in the connector of the present invention, the connector pins 100A, 100A
B, 100C may be used. For example, when the connector pin 100A is applied to the structure of the conventional connector 1 as shown in FIG. The pins 100A are formed with different lengths of the contact portions 121, and the solder portions 122
Are formed so as to have the same length, and the plurality of types of contact portions 121 are mounted on one surface of the mounting substrate 3 at a predetermined interval every other contact portion in a non-contact state. The bent portions are arranged in a zigzag state on the base end side, and the soldering portions 122 are also arranged in a zigzag state, and the contact portions of the soldering portions 122 from the bent portions of the plurality of connector pins 100A are arranged. The dowels 123 are formed as discontinuous portions between the sides 121, so that the flux applied to the soldering portions 122 can be prevented from creeping up to the contact portions 121. Further, depending on the form of the connector, the connector pin 100 of any of the above embodiments may be used.
It is needless to say that A, 100B, and 100C may be used in a straight line.

[0031]

As is clear from the above description, according to the connector for electronic equipment of the present invention, it is possible to prevent the flux from climbing up, and therefore the contact at the contact portion of the connector pin due to the flux rising up. Defects can be eliminated, and it is not necessary to manage the amount of application required when applying flux to the soldered portion of the connector pin. In addition, a number of excellent effects can be obtained, such as a connector having a relatively large number of pins without increasing the size of the connector itself.

[Brief description of the drawings]

1 shows a connector pin of a first embodiment suitable for use in a connector of the present invention, FIG. 1A being a plan view thereof, and FIG. 1B being a cross-sectional view taken along line AA of FIG. is there.

FIG. 2 shows a connector pin according to a second embodiment suitable for use in the connector of the present invention. FIG. 2A is a plan view and FIG. 2B is a side view.

3A and 3B show connector pins suitable for use in a connector according to a third embodiment of the present invention. FIG. 3A is a plan view and FIG. 3B is a side view.

FIG. 4 is a graph showing the effect of the connector pins of the various embodiments of the present invention shown in FIGS. 1 to 3 to prevent flux from climbing up.

FIG. 5 is an external perspective view of a conventional electronic device connector.

FIG. 6 is a top view as seen from an arrow A shown in FIG.

FIG. 7 is a front view as viewed from an arrow B shown in FIG. 5;

FIG. 8 is a bottom view as viewed from an arrow C shown in FIG. 5;

FIG. 9 is a rear view as viewed from an arrow D shown in FIG. 5;

FIG. 10 is a side view as viewed from an arrow E shown in FIG.

11 is a cross-sectional view taken along line AA shown in FIG.

FIG. 12 is an exploded perspective view showing a main part of the connector shown in FIG. 5 in an exploded manner.

13A and 13B show connector pins used in a conventional connector, FIG. 13A is a perspective view thereof, and FIG. 13B is a cross-sectional view taken along line AA of FIG.

[Explanation of symbols]

100A: Connector pin of the first embodiment suitable for use in the electronic device connector of the present invention; 100B: Connector pin of the second embodiment suitable for use in the electronic device connector of the present invention; 100C: Electronic device of the present invention A connector pin according to the third embodiment suitable for use as a device connector, 121...
122, 122B: soldering portion, 123: dowel, 124
… Zigzag projection

Claims (5)

[Claims] 1. A contact portion is formed at one end, and a solder portion is formed at the other end.
The contact portion is arranged and supported on one surface side of the mounting board, and the contact portion of the soldering portion of the plurality of connector pins is connected to the contact portion of the soldering flux applied to the soldering portion. A connector for an electronic device, wherein a discontinuous shape portion for preventing creeping up to a part side is formed. 2. The contact portion is formed with different lengths,
The soldering portion is formed with substantially the same length, and is formed of a plurality of types of connector pins bent so that the length of the soldering portion becomes the same length. The plurality of types of contact portions are attached in a non-contact state at predetermined intervals in every other contact portion, and the bent portions are arranged in a zigzag state on the base end side of the mounting board, and the soldering portion is also provided. Between the bent part of the plurality of connector pins arranged and supported in a zigzag state and the contact part side of the solder part, the contact part side of the soldering flux applied to the solder part A connector for an electronic device, wherein a discontinuous shape portion for preventing creeping up is formed. 3. The electronic device connector according to claim 1, wherein the discontinuous shape portion has a dowel shape. 4. The electronic device connector according to claim 1, wherein the discontinuous shape portion has a tapered shape. 5. The electronic device connector according to claim 1, wherein the discontinuous shape portion has a zigzag shape.