JPH05174910A - Card edge type surface mounted connector - Google Patents

Abstract

PURPOSE:To improve the productivity of a card edge type surface mounted connector by surely and completely connecting even a circuit substrate provided with any number of connecting terminals spaced with an equal pitch between the respective two adjacent terminals to the connector via a single insulator. CONSTITUTION:In a connector composed of an insulator 41 having terminal fixation holes 41a arranged in two lines at equi-space pitches and plural number of jack terminals each having a tongue-piece-like contact 11a at one end thereof, the insulator 41 for retentively fixing the jack terminals in parallel with one another while the tongue-piece-like contacts 11a are kept at specified spaces is formed by providing the insulator with the number of the terminal fixation holes 41a corresponding to a number exceeding a required number of the terminals by not less than four terminals. Moreover, the connector is composed by providing it with at least two circuit-substrate guides 42, each having leg-like projections 42-1, 42-2 being able to be fixed to the insulator 41 via the two terminal fixation holes 41a mutually adjacent between the two lines thereof and also each formed with a groove 42a for guiding a circuit substrate 2 to a block portion joined to the leg-like projections along a side-face on one side of the groove so that the circuit-substrate may be positioned between lines of the contacts 11a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a card edge type surface mount connector, and more particularly to a circuit board having any number of connection terminals having an equal pitch between adjacent terminals, which is surely and completely connected by one insulator. Therefore, the present invention relates to a card edge type surface mount connector whose productivity is improved.

Many types of card edge type surface mount connectors (hereinafter simply referred to as connectors) which are surface-mounted on the connection electrodes formed on the side edges of the circuit board across the edges have been put into practical use. However, in response to the recent demand for miniaturization of devices in the field of electronic equipment, miniaturization of the connector and further miniaturization of connection terminals attached to the connector are progressing, and stable connection between the connector and the circuit board is being made. How to secure is becoming a big issue.

[0003]

2. Description of the Related Art FIG. 4 is a diagram for explaining a conventional connector configuration example and a method for mounting on a circuit board, FIG. 5 is a diagram for explaining another conventional configuration example, and FIG. 6 is a diagram for explaining problems. It is a figure.

In each case, a case will be described as an example where a jack-side connector in which an odd number of jack terminals are arranged in a zigzag pattern in two rows is mounted on a circuit board. In FIG. 4, the connector 1 is composed of a plurality of jack terminals 11 each having one end formed in a tongue-shaped contact 11a, and an insulator 12 for arranging and fixing the jack terminals 11 in a zigzag pattern in two rows.

The jack terminal 11 is shown in an enlarged view.
As shown in (A), one end is formed on the tongue-shaped contact 11a and the other end that fits into a plug (not shown) is formed on the jack contact 11b that is bent in a cylindrical shape, and the longitudinal middle portion thereof is formed. A fixing portion 11c is formed on each of the fixing portions 11c.

Further, the insulator 12 is formed with square terminal fixing holes 12a which can hold and fix the jack terminals 11 in the area of the fixing portion 11c thereof in a zigzag arrangement in two rows.
When the jack terminal 11 is inserted into the fixing hole 12a, it can be fixed to the insulator 12 at a predetermined position.

[0007] Therefore, the arrows a ₁ to between the rows in the terminal fixing hole 12a of the insulator 12 is in the opposite direction, a ₂ of as jack
11 is inserted to form the connector 1 shown in FIG.

The tongue-shaped contact 11a of the connector 1
The column-to-row distance w is formed to be substantially equal to the thickness t of the circuit board 2 on which the connector 1 is mounted. on the other hand,
On both sides of the circuit board 2 in the vicinity of the edge 2a, connection electrodes 2b are patterned and formed at positions corresponding to the tongue-shaped contacts 11a of the connector 1.

Therefore, when the circuit board 2 is positioned manually so that the connection electrode 2b and the contact 11a are aligned and inserted between the contact rows as indicated by arrow b, the contacts 11a correspond to the circuit board 2. Since the connection electrodes 2b are in contact with each other, the connector 1 can be mounted on the circuit board 2 by directly connecting the connection electrodes 2b by soldering with a reflow device (not shown).

In the connector 1, since the insulator itself has a simple shape, there is an advantage that both the cost and the size can be realized. In particular, the circuit board 2 is small, thin and lightweight like an IC memory card. Sometimes it can be very effective.

In FIG. 5 showing another configuration example, the connector 3 comprises a plurality of jack terminals 11 described in FIG. 4 and an insulator 31 for arranging and fixing the jacks 11 in two rows in a staggered manner. In particular, the insulator 31 in this case is the insulator described in FIG.
Similar to 12, but guides 31a having grooves 31a 'into which the circuit board 2 of FIG. 4 can be positioned and inserted are formed at both ends in the longitudinal direction so as to project.

Therefore, when the circuit board 2 and the connector 3 are fitted together, there is a merit that a more efficient mounting work can be realized as compared with the case of FIG. 4, and especially the circuit board is relatively large like a normal printed circuit board. Sometimes it can be very effective.

[0013]

However, in the case of the connector 1 described with reference to FIG. 4, since the positioning of the circuit board 2 with respect to the connector 1 depends on a manual or the like, the side view of FIG. 6 showing the problem is shown. The circuit board 2 is attached to the connector 1 with an inclination α as shown in (a), or the tongue-shaped contacts 11a of the connector 1 and the connection electrodes of the circuit board 2 are shown as (b) in the plan view. The contact 11a may be attached in a state where it is out of alignment with the contact 2a.
However, there is a problem in that special attention must be paid during the attachment, because the contact will come into contact with the adjacent connection electrode 2b.

Furthermore, when the above-mentioned inclination or positional deviation occurs during the time when the solder is fixed by soldering by the reflow technique or the like, the two are connected as they are, and as a result, the connector 1 is connected. There is a problem that the connection reliability between the circuit board 2 and the circuit board 2 may decrease.

In the case of the connector 3 described with reference to FIG. 5, it is necessary to prepare a connector having the same number of connection terminals as the circuit board 2, and in particular, recently, circuit boards having different specifications are often used. When it comes, there is a problem that it is necessary to prepare connectors suitable for each specification, and as a result, the series is expanded and it is not possible to expect improvement in productivity.

[0016]

SUMMARY OF THE INVENTION According to the above object, an insulator in which terminal fixing holes are aligned in a plurality of rows at a constant pitch between adjacent terminals and one end is formed in a tongue-shaped contact for surface mounting. A card edge type surface mount connector comprising a plurality of jack terminals or plug terminals, wherein the tongue-shaped contacts of the plurality of jack terminals or plug terminals form two surfaces with a predetermined interval. The insulator that is exposed in parallel and is held and fixed is formed with a number of terminal fixing holes that exceeds the required number of terminals by at least four or more, and the insulating is performed by two terminal fixing holes that are adjacent between rows. It has leg-like projections that can be fixed to the body, and when fixed to the insulator by the leg-like projections, the required circuit board can be guided by one side thereof to be positioned between the rows of the tongue-shaped contacts. Groove It is achieved by the card-edge type surface mount connector configured circuit board guide that is formed in the block portion connected to the leg-like projections at least two comprises by.

[0017]

When the size of the circuit board, in other words, the connector is constructed by mounting the circuit board guide configured so as to freely correspond to the number of connecting electrodes on the insulator, the size of one connector is different. It can be applied to a circuit board.

Therefore, in the present invention, the terminal can be fixed to the insulator by inserting it into the terminal fixing hole formed in the insulator.
The individual circuit board guides are attached to the insulator according to the circuit board to be mounted to form a connector.

This means that the two guides can be applied to a circuit board of any size by changing the mounting positions of the guides on the insulator. Therefore, it is possible to easily realize a connector that can surely guide and mount any circuit board.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining a configuration example of a connector according to the present invention, (1-1) is a configuration diagram, and (1-2) is a diagram showing a completed state as a connector.

FIG. 2 is a diagram for explaining another configuration example, and FIG.
FIG. 9 is a diagram showing another embodiment. In addition, in each figure
As an example, the case of the same jack connector as
The same target members as those in FIG.

In (1-1) of FIG. 1, the connector 4 includes a plurality of jack terminals 11 described in FIG. 4, an insulator 41 for arranging and fixing the jack terminals 11 in two rows in a staggered manner, and the insulator 41. It is composed of two circuit board guides 42 to be mounted.

In particular, the insulator 41 in this case has the same structure as shown in FIG.
At least two terminal fixing holes 41a having the same size as the terminal fixing holes 12a of the insulator 12 described above are provided at both ends in the longitudinal direction.
41a _-1 , 41a _-2 , 41a _-3 , 41a _-4 are additionally formed one by one.

Therefore, a total of four terminal fixing holes 41a- ₁ , 41a- ₂ , 41a- ₃ , 41a- ₄ , two at each end, are provided.
The number of a is the terminal fixing hole 12 formed in the insulator 12 of FIG.
will be equal to a.

The above-mentioned circuit board guide according to the present invention
42 As shown in the enlarged view, of the FIG. (B), terminal fixing hole 41a _-1 located at one end of the insulator 41, each of said holes 41a _-1 at positions corresponding to the 41a _-2, fitted to 41a _-2 Leg-shaped protrusions 42 _-1 , 4
In the block shape having 2 _-2 , the circuit board 2 of FIG. 4 can be inserted into the block portion while being guided by one side thereof, and the insertion direction, that is, the leg-shaped projections 42 _-1 , 42 _-2 formation side. A groove 42a having a stop surface 42a 'is formed on the bottom surface.

Then, the groove 42a is formed by the leg-shaped projection 42._-1, 42
_-2Is the terminal fixing hole 41a of the insulator 41 _-1, 41a_-2And each
Arrow c to fit₁Install by fitting it to the insulator 41 as shown in
Formed so as to face the inner side in the longitudinal direction of the insulator 41 when
Has been done.

When the circuit board guide 42 is half-turned as indicated by an arrow c ₂ , the two leg-shaped projections 42 _-1 , 42 _-2 are located at the other end of the insulator 41. Terminal fixing hole 41a _-3 , 41a
_-4 , the guide 42 is attached to the other end of the insulator 41 so that the required connector 4 can be constructed as shown in (1-2).

In the connector 4 having such a structure, the circuit board 2 to be mounted is guided by the circuit board guide 42, so that the mounting work can be carried out as efficiently as the connector 3 described in FIG.

Further, the bottom surface of the groove 42a of the circuit board guide 42 excluding the stopper surface 42a ', in other words, the surface 42a "which guides the circuit board 2 at its side, has a semi-circular projection as shown in the figure.
Forming 42b and forming a semicircular cutout 2c at a position corresponding to the protrusion 42b of the circuit board 2 as shown by a broken line d makes it possible to realize temporary fixing of the circuit board 2 and the connector 4. it can.

Therefore, it is possible to eliminate the positional deviation between the solder and the solder until the solder is fixed at the time of solder connection, and it is possible to suppress the deterioration of the connection reliability. When the connector is composed of an even number of jack terminals, it is possible to deal with the same situation as described above by providing extra terminal fixing holes formed at both ends of the insulator with an odd number such as 2 and 3, for example. ..

FIG. 2 shows a case where the circuit board mounted on the insulator is small. For example, the jack terminals 11 to be mounted on the insulator 51 are mounted according to the number of connection electrodes of the circuit board 21 to be mounted. After that, the circuit board guides 42 described with reference to FIG. 1 are provided in the terminal fixing holes 51a located at both ends of the terminal arrangement area.
The connector 5 that can be adapted to the circuit board 21 can be configured by inserting and fixing the above-mentioned method by the method described above.

FIG. 3 exemplifies a case where a plurality of (two in the figure) circuit boards are mounted on one insulator. For example, a jack terminal mounted on the same insulator 51 as in FIG. 11 are grouped according to the number of connection electrodes of the two circuit boards 22 and 23 and implanted, and then the circuit board guides 42 described in FIG. 1 are provided in the terminal fixing holes 51a located at both ends of each terminal arrangement area. The connector 6 on which the respective circuit boards 22 and 23 can be mounted can be easily constructed by inserting and fixing the above-mentioned method.

In the above description, the case where the terminal arrangement is in two rows is taken as an example, but in the case of a plurality of rows of three rows or more, it is possible to deal with it by appropriately setting the insertion and fixing position of the circuit board guide described above. You can

[0034]

As described above, according to the present invention, it is possible to improve productivity by securely and completely connecting a circuit board having any number of connection terminals having the same pitch between adjacent terminals with one insulator. An edge type surface mount connector can be provided.

In the description of the present invention, the terminal-fixing hole of the insulator is a square hole because the rectangular bent portion of the jack terminal is a fixing portion for the insulator. However, it is necessary to limit the hole to a square hole. It is clear that the same effect can be obtained by using a hole matching the shape of the jack terminal fixing portion.

In the description of the present invention, the case where the two rows of jack terminals are arranged in a zigzag pattern is taken as an example. However, when the terminals are arranged in a matrix, the leg-shaped projections of the circuit board guide are formed. Equivalent effects can be obtained by forming them according to the arrangement, and even when the jack terminals are plug terminals, completely the same effects can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration example of a connector according to the present invention.

FIG. 2 is a diagram illustrating another configuration example.

FIG. 3 is a diagram showing another embodiment.

FIG. 4 is a diagram illustrating a configuration example of a conventional connector and a mounting method on a circuit board.

FIG. 5 is a diagram illustrating another conventional configuration example.

FIG. 6 is a diagram illustrating a problem.

[Explanation of symbols]

2,21,22,23 Circuit board 2c Notch 4,5,6 Card edge type surface mount connector 11 Jack terminal 11a Tongue contact 41,51 Insulator 41a, 41a _-1 , 41a _-2 , 41a _-3 , 41a _-4 , 51a Terminal fixing hole 42 Circuit board guide 42 _-1 , 42 _-2 Leg-shaped protrusion 42a Groove 42a ′ Stop face 42a ″ Bottom 42b Semi-circular protrusion

Claims (2)

[Claims] 1. An insulator in which terminal fixing holes are arranged in a plurality of rows at a constant pitch between adjacent terminals, and a plurality of jack terminals or plugs each having one end formed as a tongue-shaped contact for surface mounting. A card edge type surface mount connector composed of terminals and a plurality of jack terminals or plug terminals exposed in parallel so that the tongue-shaped contacts (11a) form two surfaces with a predetermined interval. The number of terminal fixing holes (41a) in the insulator (41) to be held and fixed exceeds the required number of terminals by at least 4 or more.
And has leg-like protrusions (42 _-1 , 42 _-2 ) that can be fixed to the insulator (41) by two terminal fixing holes (41a) adjacent to each other between the rows and When fixed to the insulator with the leg-shaped projections (42 _-1 , 42 _-2 ), guide the required circuit board (2) with its one side edge, and between the rows of the tongue-shaped contacts (11a). grooves may brought position (42a) is leg-like projections (42 _-1, 42
_-2 ) A card edge type surface mount connector characterized by comprising at least two circuit board guides (42) formed in a block portion connected to (2). 2. The circuit board guide (42) according to claim 1.
However, the bottom surface (42a ″) of the groove (42a) excluding the stop surface (42a ′)
A card edge type surface mount connector, characterized in that it is provided with means (42b) for temporarily fixing the circuit board (2).