JPH08315881A - Surface mount connector - Google Patents

Abstract

PURPOSE: To provide a surface mount connector in which contacts are provided with a high density and which is accurately mounted on a board with simple constitution. CONSTITUTION: This surface mount connector is constituted of contacts 12a, 12b provided with connection parts 17a, 17b connected to an other connector and lead parts 18a, 18b soldered to wiring patterns 21a, 21b formed in a printed circuit board 20 and a housing 11 internally provided in the contacts 12a, 12b. Spring piece parts 19a, 19b formed in a nearly dog leg like form so as to have a spring property are integrally formed and at the same time the contacts 12a, 12b are provided in the housing 11 in at least two rows or more. A pair of the spring piece parts 19a, 19b are engaged with temporarily fixing holes 22a, 22b formed in the printed circuit board 20, thereby temporarily fixing a connector 10 to the printed circuit board 20 by elastic force generated by the spring piece parts 19a, 19b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mounting connector, and more particularly to a surface mounting connector which can be temporarily fixed to a board to be mounted. 2. Description of the Related Art In recent years, with the demand for miniaturization of electronic devices, electronic components and electronic devices arranged in the electronic devices have been improved in accuracy and size.

Along with this, the precision and size reduction of connectors provided in electronic equipment have been attempted. Further, there is a demand for higher density of the connector, and therefore, the number of arranged contacts tends to increase. Therefore, a connector capable of accurately soldering a large number of contacts to a printed circuit board is desired.

[0003]

2. Description of the Related Art FIGS. 8 to 10 are views for explaining an example of a conventional connector. FIG. 8 shows a cross section of the connector 1, FIG. 9 shows a printed circuit board 7 on which the connector 1 is mounted, and FIG. 10 shows the connector 1 mounted on the printed circuit board 7.

The connector 1 is generally a housing 2
And a plurality of contacts 3 fixed to the housing 2.
It is composed of The housing 2 is formed by molding an insulating resin, and a plurality of insertion holes 4 into which a connector plug (not shown) attached to the connector 1 is inserted are formed in the upper portion.

The contact 3 is formed by, for example, pressing a conductive metal, and the contact 3 is formed in a predetermined upper region near the insertion hole 4.
Has a bifurcated shape and forms a connecting portion 5 which is electrically connected to the connector plug. The lower portion of the contact 3 forms a lead portion 6 by being bent laterally from the lower end portion of the housing 2.

The connector 1 having the above structure is surface-mounted on the printed circuit board 7 shown in FIG. A plurality of wiring patterns 8 are formed on the surface of the printed board 7. The formation position of the connection pattern 8 is set so as to correspond to the lead portion 6 of the contact 3 arranged in the connector 1.

To mount the connector 1 on the printed circuit board 7, the lead portion 6 and the wiring pattern 8 are positioned and then the connector 1 is mounted on the printed circuit board 7, and then the lead portion 6 and the wiring pattern 8 are mounted. Soldering and joining (solder 9
The connector 1 has been mounted on the printed circuit board 7 (see FIG. 10).

[0008]

However, when miniaturization and high density are not strictly required as in the conventional case,
Since the pitch between the adjacent lead portions 6 can be made relatively wide, the lead portions 6 and the wiring pattern 8 can be properly arranged even if the lead portions 6 and the wiring pattern 8 are simply positioned and soldered as described above. Could be joined.

However, in recent years, there has been a strict demand for miniaturization and thinning, and when the pitch between the adjacent lead portions 6 becomes smaller accordingly, the connector 1 is slightly displaced from the printed circuit board 7. There is a problem that the position of the lead portion 6 and the wiring pattern 8 are deviated even by just doing so that the connector 1 cannot be properly mounted on the printed circuit board 7.

Further, when the connector 1 is properly mounted on the printed circuit board 7, it is necessary to perform the positioning work for the connector 1 and the printed circuit board 7 with high accuracy at the time of mounting, which makes the positioning work troublesome and also for positioning. However, there is a problem in that the mounting efficiency is reduced due to the need for a jig or the like.

The present invention has been made in view of the above points, and an object of the present invention is to provide a connector capable of highly accurately connecting a lead portion to a substrate with a simple structure.

[0012]

In order to solve the above problems, the present invention is characterized by taking the following means. According to the first aspect of the invention, a contact having a connecting portion electrically connected to another connector, a lead portion soldered to a pattern formed on the surface of the substrate, and a housing having the contact therein In the surface mounting connector configured to be surface-mounted on the board, the contact is integrally formed with a spring piece portion having a substantially V shape so as to have springiness, The contacts are arranged in at least two rows or more in the housing, and at least a pair of the spring piece portions are engaged with a temporary fixing portion formed on the substrate, so that the elastic force generated by the spring piece portions causes the contacts to move. It is characterized in that it is temporarily fixed to the substrate.

According to a second aspect of the invention, in the surface-mounting connector according to the first aspect, the pair of substantially dogleg-shaped spring piece portions are arranged in directions symmetrical to each other. It is characterized by being present.

[0014]

In the connector having the above-mentioned structure, the contact is integrally formed with the spring piece portion having a substantially V shape so as to have the spring property, and the contacts are arranged in at least two rows or more in the housing. As a result, the spring piece portions formed on the contacts forming each row are arranged to face each other. The pair of (or more) spring pieces arranged to face each other generate elastic force by engaging with the temporary fixing portions formed on the substrate, and the elastic force temporarily fixes the connector to the substrate. .

As described above, by providing the contact with the spring piece portion, the connector can be temporarily fixed to the substrate, and the connector and the substrate are positioned in this temporarily fixed state. Therefore, by performing the soldering process in the temporarily fixed state, the pattern formed on the substrate surface and the lead portion can be reliably soldered.

Further, the work of engaging the spring piece portion with the temporary fixing portion formed on the substrate is because the spring piece portion has a spring property, so that the spring piece portion is engaged with the temporary fixing portion. The required force is small and the temporary fixing work can be performed easily. Furthermore, since the spring piece is integrally formed with the contact,
There is no difficulty in forming the spring piece portion, and the spring piece portion can be formed easily and inexpensively.

[0017]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are views for explaining a connector 10 which is a first embodiment of the present invention. FIG. 1 shows a connector 10
2 is a perspective view of the connector 10, FIG. 3 is a perspective view of a printed circuit board 20 on which the connector 10 is mounted, and FIG. 4 is a sectional view showing a state where the connector 10 is temporarily fixed to the printed circuit board 20.

The connector 10 is generally a housing 1
1 and a plurality of contacts 12a and 12b. The housing 2 is formed by molding an insulating resin, and the connector 10 is provided on the upper portion.
Insertion holes 13a and 13b into which a connector plug (not shown) to be mounted on are inserted are formed. Further, step portions 14 for fitting the above-mentioned connector plugs are formed on both sides of the housing 11.

The contacts 12a and 12b are both embedded in the housing 11 as described above. Figure 2
As shown in FIG.
2b are arranged in a plurality of rows, and the contacts 12a form a first row and the contacts 12b form a second row. Further, the individual contacts 12a and the contacts 12b are arranged so as to face each other as shown in FIG. The contact 12a and the contact 12b arranged to face each other cooperate to form a pair of contacts.

As shown in FIG. 1, the contacts 12a and 12b are formed by pressing a conductive metal so that the main bodies 12a and 12b, the connecting portions 17a and 17b, the lead portions 18a and 18b, and the spring piece portions 19a and 19b. Is integrally formed. The main body portions 15a and 15b are portions fixed to the housing 11, and a plurality of ribs 16a and 16b are formed on both side portions. This rib 16a, 1
6b is engaged so as to bite into the housing 11 made of resin, whereby the contacts 12a, 12b are firmly fixed to the housing 11.

The connecting portions 17a and 17b are the main body 15
It is formed at a position close to the insertion holes 13a, 13b at the upper part of a, 15b, and has a structure in which a predetermined range of the upper part is bifurcated so that the connector plug can be engaged and electrically connected. Further, the lead portions 18a and 18b are connected to the main body portion 15
It is arranged at the lower ends of a and 15b, and has a substantially L-shape and extends outward.

Spring piece portions 19a, 19 which are essential parts of the present invention
b is the same as the lead portions 18a and 18b, the main body portion 15a,
It is formed so as to extend from the lower end of 15b. As shown in FIG. 1, the spring piece portions 19a and 19b have a central portion that is bent outward so that the spring piece portion 19a has a substantially inverted V-shape. The piece portion 19b has a substantially V shape. Further, the spring piece portions 19a and 19b each have a spring property, and by having the substantially inverted V-shape or the substantially V-shape as described above, they are elastic in the directions indicated by arrows A and B in the figure. It has a deformable structure.

As is clear from the above description and FIG. 1, the contact 12a and the contact 12b have the same structure, and are arranged symmetrically with respect to the center line X shown by the chain line in FIG. Has been done. Therefore, only one press die is required to form the contacts 12a and 12b, and the product cost can be reduced as compared with the case where the contacts are formed separately.

The connector 10 is the contact 1 having the above structure.
The first row is formed by arranging a plurality of 2a in one example, and the second row is formed by arranging a plurality of contacts 12b in one example. FIG. 3 shows a printed circuit board 20 on which the connector 10 having the above structure is surface-mounted. The printed circuit board 20 is the connector 10
The wiring patterns 21a and 21b are formed so as to correspond to the lead portions 18a and 18b provided in, and between the pair of opposing wiring patterns 21a and 21b,
A pair of temporary fixing holes 22a and 22b are formed.

The positions where the temporary fixing holes 22a and 22b are formed are the spring piece portions 19a and 1a provided on the connector 10.
It is set so as to correspond to the formation position of 9b. The temporary fixing holes 22a and 22b are through holes formed in the printed circuit board 20, and there is no difficulty in forming them.

Next, a method of temporarily fixing the connector 10 having the above structure to the printed circuit board 20 will be described.
The connector 10 according to this embodiment has the spring piece portions 19a and 19b as described above.
9b is a temporary fixing hole 22 formed in the printed circuit board 20.
It is configured such that the printed board 20 can be temporarily fixed by being inserted into and engaged with a and 22b.

Therefore, the connector 10 is connected to the printed circuit board 20.
In order to temporarily fix it, the spring piece portions 19a and 19b formed on the connector 10 may be simply inserted into the temporary fixing holes 22a and 22b formed on the printed circuit board 20. At the time of this insertion, since the spring piece portions 19a and 19b have elasticity, they are elastically deformed in the directions shown by arrows A and B in FIG. 1 and inserted into the temporary fixing holes 22a and 22b. FIG. 4 shows a state in which the connector 10 is temporarily fixed to the printed circuit board 20.

As described above, when the connector 10 is temporarily fixed to the printed circuit board 20, the spring piece portions 19a and 19b are elastically deformed and inserted into the temporary fixing holes 22a and 22b. Therefore, the insertion force required to temporarily fix the connector 10 to the printed circuit board 20 is small, and thus the temporary fixing process can be easily performed. Also, the spring piece portions 19a, 1
After 9b is inserted into the temporary fixing holes 22a and 22b, the spring pieces 19a and 19b are pressed by the spring force of the spring pieces 19a and 19b.
Since 19b presses the inner walls of the temporary fixing holes 22a and 22b, the connector 10 can be reliably temporarily fixed to the printed circuit board 20.

In this embodiment, since the spring piece portion 19a has a substantially inverted V shape and the spring piece portion 19b has a substantially inverted V shape, the spring piece portions 19a and 19b are formed. The inner walls of the temporary fixing holes 22a and 22b are provided outside (arrow A1 in FIG. 4).
(Shown by B1).

As described above, the contacts 12a, 12
It is possible to temporarily fix the connector 10 to the printed circuit board 20 by providing the spring piece portions 19a and 19b in b. In this temporarily fixed state, the connector 10 and the printed circuit board 20
Are positioned. That is, in the state in which the temporary fixing is performed, the plurality of lead portions 18a and 18b provided in the connector 10 are in a state of being positioned in the plurality of wiring patterns 21a and 21b formed on the printed board 20. ing.

Therefore, in this temporarily fixed state, the lead portion 18 is
By soldering the a and 18b to the wiring patterns 21a and 21b, even if the lead portions 18a and 18b have a high density and a narrow pitch, the lead portions 18 are surely formed.
The a and 18b and the wiring patterns 21a and 21b can be soldered.

5 to 7 show a connector 30 which is a second embodiment of the present invention. 5 is a sectional view of the connector 30, FIG. 6 is a perspective view of the connector 30, and FIG.
FIG. 3 is a cross-sectional view showing a state where is temporarily fixed to the printed circuit board 20. 5 to 7, the same components as those of the connector 10 according to the first embodiment described with reference to FIGS. 1 to 4 are designated by the same reference numerals and the description thereof will be omitted.

In the connector 10 according to the first embodiment described above, the shape of the spring piece portion 19a formed on the contact 12a is substantially inverted, and the shape of the spring piece portion 19b formed on the contact 12b. Has a substantially V shape.
On the other hand, in the connector 30 according to the present embodiment, the shape of the spring piece portion 32a formed on the contact 31a is substantially V-shaped, and the shape of the spring piece portion 32b formed on the contact 31b is substantially opposite. It is characterized by having a dogleg shape. With this configuration, the spring piece portions 32a and 32b are configured to press the inner walls of the temporary fixing holes 22a and 22b inward (indicated by arrows A2 and B2 in FIG. 7).

As described above, even when the spring piece portion 32a is formed in a substantially V shape and the spring piece portion 32b is formed in a substantially inverted shape, the connector 30 is formed into the printed circuit board 2.
The lead portions 18a, 1 can be temporarily fixed in a state of being positioned at 0, and thus have a high density and a narrow pitch.
Even with 8b, the lead portions 18a, 18b and the wiring patterns 21a, 21b can be reliably soldered.

In the embodiment described above, the spring piece portion 19
a, 19b, 32a, 32b are temporary fixing holes 22a, 22b
Although the connectors 10 and 30 are temporarily fixed to the printed circuit board 20 by engaging with the.
Instead of 2b, a temporary fixing recess is formed, and each spring piece 1
9a, 19b, 32a, 32b may be engaged. That is, each spring piece 19a, 19b, 32a, 3
The temporary fixing portion with which 2b is engaged is not limited to the hole as long as the connectors 10 and 30 can be engaged with the printed circuit board 20 and temporarily fixed.

[0036]

As described above, according to the present invention, a pair (or more) of spring piece portions respectively generate elastic force by engaging with temporary fixing portions formed on the substrate. The connector can be temporarily fixed to the substrate. Since the connector and the board are positioned in this temporarily fixed state, by performing the soldering process in this temporarily fixed state, the pattern formed on the board surface and the lead portion can be reliably soldered.

Further, the work of engaging the spring piece portion with the temporary fixing portion formed on the substrate is difficult to engage the spring piece portion with the temporary fixing portion because the spring piece portion has a spring property. The required force is small and the temporary fixing work can be performed easily. Furthermore, since the spring piece is integrally formed with the contact,
There is no difficulty in forming the spring piece portion, and the spring piece portion can be formed easily and inexpensively.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a connector that is a first embodiment of the present invention.

FIG. 2 is a perspective view of the connector which is the first embodiment of the present invention.

FIG. 3 is a perspective view showing a printed circuit board on which the connector according to the first embodiment of the present invention is mounted.

FIG. 4 is a diagram showing a state in which the connector of the first embodiment of the present invention is temporarily fixed to a printed board.

FIG. 5 is a sectional view of a connector which is a second embodiment of the present invention.

FIG. 6 is a perspective view of a connector which is a second embodiment of the present invention.

FIG. 7 is a diagram showing a state in which the connector of the second embodiment of the present invention is temporarily fixed to a printed circuit board.

FIG. 8 is a sectional view of a conventional connector.

FIG. 9 is a perspective view showing a printed circuit board on which a connector according to a conventional example is mounted.

FIG. 10 is a diagram showing a state in which a connector, which is an example of the related art, is mounted on a printed board.

[Explanation of symbols]

 10, 30 Connector 11 Housing 12a, 12b, 31a, 31b Contact 13a, 13b Insertion hole 15a, 15b Main body 17a, 17b Connecting part 18a, 18b Lead part 19a, 19b, 32a, 32b Spring piece part 20 Printed board 21a, 21b Wiring patterns 22a, 22b Temporary fixing holes

Claims (2)

[Claims] 1. A contact comprising a connecting portion electrically connected to another connector, a lead portion soldered to a pattern formed on a substrate surface, and a housing in which the contact is provided. In the surface-mounting connector configured to be surface-mounted on the substrate, the contact is integrally formed with a spring piece portion having a substantially V shape so as to have springiness, and the contact is At least two rows are arranged in the housing, and at least a pair of the spring piece portions are engaged with the temporary fixing portion formed on the board, so that the elastic force generated by the spring piece portions temporarily fixes the substrate. A surface mount connector characterized by being configured to be stopped. 2. The surface mounting connector according to claim 1, wherein the pair of substantially dogleg-shaped spring piece portions are arranged in directions symmetrical to each other. connector.