JPH11121121A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the increase of crosstalk of a high frequency signal and contact resistance and a contact failure due to positioned deviation, increase the number of contacts and realize the miniaturization of a base or the like by arranging multiple contact zigzagged to one another, located in each of lines adjacent to one another which are placed on projecting or recessed slots of a base side by side. SOLUTION: For a connector header 2, a rectangular, annular projecting part 21 is formed protrusively on the upper surface of a base 20 made of synthetic resin insulating material. On the outer and inner side surfaces of the projecting part 21, multiple contact that are received in separated slots 25 and project from the side surface by a minute dimension are formed side by side along the lengthwise direction of both the side walls and are mounted on a printed circuit board through terminal pieces 23, each of which is connected to the corresponding contact. At that time, between each pair of contacts 22 adjacent to each other in one line out of two lines opposite to each other of the contacts 22, a contact 22 in the other line is placed, so that the contacts 22 in the two lines are arranged in a zigzagged form. The space between contacts can thereby be secured sufficiently. Contacts placed side by side in recessed slots of a connector socket are arranged in the form similar to the above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector having a plurality of contacts arranged on a base.

[0002]

2. Description of the Related Art Conventionally, there has been provided a connector for electrically connecting circuits mounted on two printed boards and mechanically connecting the two printed boards. 7 and 8 show a connector on the insertion side (hereinafter, referred to as a header) which is used together with a connector on the receiving side (hereinafter, referred to as a socket) as a mating member to electrically connect circuits. I do. That is, by mounting a header and a socket on each printed circuit board and connecting the header and the socket, the circuits are electrically connected and both printed circuit boards are mechanically connected. The header shown in FIGS. 7 and 8 includes a base 20 made of an insulating material having a convex portion 21 having a rectangular cross section at the center, and a plurality of headers arranged on both side surfaces of the convex portion 21 along the longitudinal direction. And a contact 22. Each contact 22 is formed continuously and integrally with a terminal piece 23 arranged along the back surface of the base 20, and the terminal piece 23 is surface-mounted on a printed circuit board. The socket, which is a mating member of the header, has a concave groove into which the convex portion 21 is inserted, and has a structure in which the contacts that are in contact with the respective contacts 22 are arranged on the inner peripheral surface of the concave groove.

[0003]

By the way, as shown in FIG. 7, in the conventional connector, the contacts 22 in each row are not provided.
Are arranged on a straight line.
If the number of the contacts 22 is increased without changing the size of the contact 22 or if the dimension in the longitudinal direction of the base 20 is reduced even when the number of the contacts 22 is not increased, the number of the contacts 22 arranged in each row is reduced. The pit becomes smaller. As described above, when the pitch of the contacts 22 becomes small, the capacitance component between the adjacent contacts 22 becomes large, and there is a problem that crosstalk increases when a high-frequency signal is handled. In addition, when the pitch of the contacts 22 is reduced, the contact area between the contacts of the header and the socket is reduced, so that the contact resistance is increased or a contact failure due to a positional displacement between the header and the socket is apt to occur. There are also problems.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make the distance between contacts relatively large even if the number of contacts is increased or the base is downsized. It is an object of the present invention to provide a connector which does not cause high-frequency signal crosstalk or increase in contact resistance and is less likely to cause a contact failure due to a positional shift.

[0005]

According to a first aspect of the present invention, a plurality of contacts are provided in each row, and even rows of the contacts are arranged in groups of two, and the contacts are arranged in the row direction. The two rows of contacts are arranged in a zigzag pattern such that another row of contacts is located between each pair of contacts adjacent to each other in one row of the two rows. According to this configuration, the contacts are arranged in a staggered manner in the two rows forming a set. If the two rows forming the pair provide one row of contacts in the conventional configuration, Of the contact of the conventional configuration 2
By increasing the pitch between the contacts, crosstalk is less likely to occur, and the contact area of the contact with the counterpart member can be increased to reduce the contact resistance. However, since the contact area with the mating member is large, the margin for displacement with the mating member is increased, and the possibility of poor contact is reduced.

According to a second aspect of the present invention, in the first aspect of the invention, each contact is spring-biased so as to elastically contact the other member, and further includes a contact portion projecting toward the other member. A time difference of a plurality of stages is provided at the time of contact between the contact portion of each contact and the mating member at the time of coupling with the side member. According to this configuration, all the contacts do not simultaneously apply the contact pressure to the mating member at the time of coupling with the mating member. The peak value of the force required for joining can be reduced, and joining can be performed with a relatively small force.

According to a third aspect of the present invention, in the second aspect of the present invention, the contact portions of the contacts in one row of the two rows in the set simultaneously contact the mating member, and the contact portions of the contacts in the other rows contact each other. The parts are arranged at different positions in the direction in which the mating members are joined. According to this configuration, the force required at the time of coupling with the mating member can be reduced with a simple configuration in which the formation positions of the contact portions of the contacts in each row in the set are different.

According to a fourth aspect of the present invention, in the third aspect of the present invention, four rows of contacts are arranged, and the contact portions provided on the two inner rows of contacts are arranged in two outer rows when mating members are joined. The contact portions of the contacts in each row are provided so as to contact the mating member later than the contact portions provided on the contacts. According to this configuration, the contact portions of the outer two rows of contacts come into contact with the mating member before the contact portions of the inner two rows of contacts, so that the inwardly pressing force acts on the mating member. As a result, wobbling does not easily occur when the mating members are joined, and the mating members can be stably joined to each other.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 and 2 show a header 2 and FIGS. 3 and 4 show a socket 1. The header 2 includes a base 20 made of an insulating material made of a synthetic resin. On one surface of the base 20, a rectangular annular convex portion 21 is protruded. A plurality of contacts 22 are arranged in a row on both side walls in the longitudinal direction of the protrusion 21 along the outer side surface and the inner side surface, respectively. Each contact 22 is accommodated in a separation groove 25 formed on the inner and outer surfaces of the projection 21, and each contact 22 protrudes from the inner and outer surfaces of the projection 21 by a small dimension. The contact 22 is made of a metal having a high electric conductivity and is formed continuously and integrally with a terminal piece 23 disposed along the other surface of the base 20. The terminal piece 23 has a bent portion at an intermediate portion, and the tip of the terminal piece 23 is separated from the base 20. Therefore, when the header 2 is surface-mounted on the printed circuit board P2, a gap can be formed between the printed circuit board P2 and the base 20, and some of the terminal pieces 23 are connected to the base 20 and the printed circuit board P2. The terminal strip 23 can be connected to the printed circuit board P2 by soldering in a state where it is located between them. Here, convex part 2
An introduction portion 24 that tapers over the entire circumference is formed at the distal end of the device 1.

By the way, as shown in FIG. 1, the contacts 22 arranged on the outer surface and the inner surface of each side wall of the convex portion 21
They are arranged in a staggered pattern. Here, the staggered shape is the base 20
In the longitudinal direction, the other rows of contacts 22 are located between each pair of adjacent contacts 22 in one of the inner and outer rows. By adopting such an arrangement, it is possible to arrange the contacts 22 at a half pitch for two rows while keeping the pitch of the adjacent contacts 22 relatively large in each row. 22 can be provided. Further, the terminal piece 23 provided continuously and integrally with each contact 22 has a shape in which the terminal piece 23 continuous with the contact 22 in one row is located between the terminal pieces 23 continuous with the contact 23 in the other row. Are arranged in a zigzag pattern. further,
A terminal piece 23 connected to the contact 22 disposed on the outer surface of the protrusion 21 projects to the side of the base 20, and a terminal piece 23 connected to the contact 22 disposed on the inner surface of the protrusion 21 is formed on the base 20. The dimensions are set so as not to protrude to the side of. In addition to adopting such a dimensional relationship, as described above, the terminal piece 23 has a bent portion in the middle,
The terminal pieces 23 are narrower than those of the adjacent terminal pieces 23.
, A relatively large distance can be ensured and crosstalk does not increase, and the distance between the terminal pieces 23 to be soldered to the printed circuit board P2 can be made relatively large, so that a so-called solder bridge is formed. The possibility of short-circuiting between the terminal pieces 23 due to this can be reduced.

On the other hand, the socket 1 has a base 10 made of a synthetic resin made of a synthetic resin and formed so that the outer dimensions thereof are substantially equal to the base 20 of the header 2. The base 10 has an annular groove 11 into which the rectangular annular protrusion 21 formed in the header 2 is inserted. In the opening of the concave groove 11, the introduction part 1 inclined so as to increase the opening width toward the opening side so as to guide the introduction part 24 formed at the tip of the convex part 21.
4 are formed. A plurality of contacts 12 that can contact the contacts 22 arranged on the protrusion 21 of the header 2 are arranged on the inner peripheral surface of the concave groove 11. Here, each contact 1
2 are respectively housed in separation grooves 15 formed on the peripheral surface of the concave groove 11. As shown in FIG. 4, each contact 12 has a substantially U shape opened in a direction opposite to the opening of the concave groove 11 in the separation groove 15.
A contact portion 16 protrudes from the separation groove 15 on one leg. Therefore, the contact portion 16
When the contact 22 of the header 2 comes into contact with the terminal pieces 13a,
13b is bent to bring the contact portion 16 into elastic contact with the contact 22 of the header 2. On the other leg, terminal pieces 13a and 13b arranged along the back surface of the base 10 are formed continuously and integrally. That is, the contact 12 and the terminal pieces 13a and 13b are continuously and integrally formed of a metal having a high electric conductivity.

A terminal piece 13a connected to the two inner rows of contacts 12 of the concave groove 11 and a terminal piece 13b connected to the outer two rows of contacts 12 are formed in different shapes. However,
The distal ends of both terminal pieces 13a and 13b are separated from the base 10, and when the socket 1 is surface-mounted on the printed board P1, a gap may be formed between the printed board P1 and the base 10. When the terminal strip 13a is positioned between the base 10 and the printed circuit board P1, the terminal strip 13a
Can be soldered to the printed circuit board P1. The terminal strips 13a and 13b are arranged so as not to overlap with each other in a plane orthogonal to the arrangement direction of the terminal strips 13a and 13b.

The two rows of contacts 1 inside the concave groove 11
The two and the outer two rows of contacts 12 are arranged in a staggered manner as shown in FIG. That is, similarly to the header 2, in the longitudinal direction of the base 10, the other contact 12 is disposed so as to be located between each pair of adjacent contacts 12 in one of the inner and outer rows. By adopting such an arrangement, it is possible to arrange the contacts 12 at a half pitch for two rows while keeping the pitch of the adjacent contacts 12 relatively large in each row. 12
Can be provided. In addition, the terminal strip 13 provided continuously and integrally with each contact 12 also has one row of contact 12
Are arranged in a staggered manner such that the terminal pieces 13a that are continuous with the contacts 13 are located between the terminal pieces 13b that are continuous with the contacts 13 in the other row.

Further, the dimensions are set so that the terminal strip 13a does not protrude to the side of the base 10 and the terminal strip 13b protrudes to the side of the base 10. Due to such a dimensional relationship, the terminal strip 1 is located in a plane orthogonal to the arrangement direction of the terminal strips 13a and 13b.
By arranging the terminal piece 3a and the terminal piece 13b so as not to overlap each other and making the terminal pieces 13a and 13b narrower than the contact 12, a relatively large distance is secured between the adjacent terminal pieces 13a and 13b. You can never increase the crosstalk. Further, the distance between the terminal pieces 13a and 13b to be soldered to the printed circuit board P1 can be made relatively large, and the possibility of a short circuit between the terminal pieces 13a and 13b due to the formation of a so-called solder bridge can be reduced. .

Then, the socket 1 and the header 2 are surface-mounted on the printed circuit boards P1 and P2, respectively.
When the protrusion 12 of the header 2 is inserted into the groove 11 of the socket 2, the contact 22 of the header 2 comes into contact with the contact portion 16 provided on the contact 12 of the socket 1, and the contact 12 bends. The contact 16 is pressed against the contact 22, and a contact pressure acts between the contact 12 and the contact 22. Here, the contact 12 and the contact 22 can each have a larger pitch as compared with the conventional configuration, so that there is a margin for the positional deviation between the socket 1 and the header 2, and there is a possibility that a contact failure due to the positional deviation may occur. Less. In addition, since the contact area between the contacts 12 and 22 is relatively large, an increase in contact resistance can be suppressed.

Assuming that the lengths of the bases 10 and 20 in the longitudinal direction are equal to those of the conventional configuration and that the number of the contacts 12 and 22 is equal to that of the conventional configuration, the present embodiment is more suitable for the contacts 1 in each row.
Since the pitch between the terminal pieces 2 and 22 can be made larger than that of the conventional configuration and the distance between the terminal pieces 13a, 13b and 23 can be made large, crosstalk is small and a solder bridge is hardly formed.

(Embodiment 2) In this embodiment, as shown in FIG. 5, the contacts 12 and terminal pieces 13a and 13b used for the socket 1 have different shapes from those of the first embodiment. That is, in the present embodiment, the contact 12 and the terminal strip 1
A fixing piece 17 is added to an integral part of the contact 3a and 13b. The contact 12 is not formed in a U-shape, and a contact 16 is protruded from the tip of the contact 12. The fixing piece 17 is formed in a shape in which a fixing claw 18 is protruded from an intermediate portion, and when the fixing piece 17 is pressed into a fixing groove 19 formed in the base 10, the fixing claw 18 is engaged with the inner peripheral surface of the fixing groove 19. Then, the contact 12 and the terminal strips 13a and 13b are fixed to the base 10. The contact 12, the terminal pieces 13a, 13b, and the fixing piece 17 having such shapes can be formed without punching and bending a sheet metal. The contact 12 is arranged so as to be flexible in the separation groove 15 so that the contact pressure between the contact 12 and the contact 22 can be applied by bending of the contact 12 as in the first embodiment. It is. Other configurations and operations are the same as those of the first embodiment.

(Embodiment 3) In this embodiment, as shown in FIG. 6, the position of the contact portion 16 in the contact 12 of the socket 1 of Embodiment 1 is changed. That is, the contact portions 16 of the inner two rows of the contacts 12 are replaced with the outer two rows of the contacts 1.
It is located below the contact portion 2 in FIG.
When such a configuration is employed, when the convex portion 21 of the header 2 is inserted into the concave groove 11 of the socket 1, the point at which the insertion force reaches a peak can be dispersed in two stages, and the peak value of the insertion force can be reduced. can do.

That is, as in the first embodiment, the position of the contact portion 16 is the same in all the contacts 12 and the number of the contacts 12 increases, so that the peak value of the insertion force increases. When connecting the printed circuit boards P1 and P2, the printed circuit boards P1 and P2 may bend.
Is bent, the socket 1 or the header 2 and the printed circuit boards P1, P
There is a possibility that inconveniences such as cracks may occur in the solder connection part with the second. On the other hand, in the configuration of the present embodiment, since the peak time of the insertion force is dispersed, the peak value can be reduced, and the above-described inconvenience can be avoided. In addition, since the contact portions 16 of the inner two rows of contacts 12 are located below the contact portions 16 of the outer two rows of contacts 12, the headers 2 are pressed inward, and the headers 2 are pressed. It becomes possible to insert the socket 1 without shaking.

By reducing the peak value of the insertion force as described above, even when the number of contacts 12 is large, the socket 1 and the header 2 can be bent without bending the printed circuit boards P1 and P2.
And can be combined. Further, in order to reduce the insertion force, when the header 2 is connected to the socket 1, a time difference of a plurality of stages may be provided at the time when the insertion force reaches a peak. Although not limited, manufacture of the row of contacts 12 is facilitated by providing the contact portions 16 at the same position. Other configurations and operations are the same as those of the first embodiment.

[0021]

According to the first aspect of the present invention, a plurality of contacts are provided in each row, and even rows of contacts are arranged in groups of two rows, and the contacts are arranged in the row direction. Two rows of contacts in a set are arranged in a staggered manner such that the contacts of the other row are located between each pair of contacts adjacent to each other in one of the two rows. If the rows are provided with one row of contacts in the conventional configuration, the pitch of the contacts in each row can be twice as large as in the conventional configuration, and the pitch between the contacts is increased, thereby increasing Talk is less likely to occur, and the contact area of the contact element with the counterpart member can be increased to reduce the contact resistance. There is an advantage that the margin is increased and the possibility of poor contact is reduced.

According to a second aspect of the present invention, each of the contacts is spring-biased so as to elastically contact the mating member, and has a contact portion projecting toward the mating member. When there is a time difference of a plurality of stages at the time of contact between the contact portion of each contact and the mating member at the time, all the contacts simultaneously apply the contact pressure to the mating member at the time of coupling with the mating member. Since there is a time difference at the time when the contact pressure acts instead of acting, there is an advantage that the peak value of the force required for coupling with the mating member can be reduced and the coupling can be performed with a relatively small force.

According to a third aspect of the present invention, the contact portions of the contacts in one row of the two rows in a set simultaneously contact the mating member, and the contact portions of the contacts in the other row mutually form the mating member. Are arranged at different positions in the direction in which According to this configuration, there is an advantage that the force required for coupling with the mating member can be reduced with a simple configuration in which the formation positions of the contact portions of the contacts of each row in the set are different.

According to the fourth aspect of the present invention, four rows of contacts are arranged, and the contact portions provided on the inner two rows of contacts are provided on the outer two rows of contacts when mating members are joined. The contact portions of the contacts of each row are provided such that the contact portions of the two outer rows of contacts are provided so as to contact the mating member later than the contact portions of the contact portions. Since the contact with the mating member occurs first, an inwardly pressing force acts on the mating member, and the wobble does not easily occur when the mating member is joined, and the position of the mating member is stabilized and joined. There is an advantage that can be.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a header used in a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a partially cutaway plan view showing the socket used in the above.

FIG. 4 is a sectional view taken along line YY in FIG. 3;

FIG. 5 is a sectional view showing a socket used in a second embodiment of the present invention.

FIG. 6 is a sectional view showing a socket used in a third embodiment of the present invention.

FIG. 7 is a plan view showing a conventional example.

FIG. 8 is a sectional view taken along line ZZ of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2 Header 10 Base 11 Concave groove 12 Contact 13a, 13b Terminal strip 16 Contact part 20 Base 21 Concave groove 22 Contact 23 Terminal strip 26 Contact

[Procedure amendment]

[Submission date] May 6, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

By the way, as shown in FIG. 7, in the conventional connector, the contacts 22 in each row are not provided.
Are arranged on a straight line.
If the number of the contacts 22 is increased without changing the size of the contact 22 or if the dimension in the longitudinal direction of the base 20 is reduced even when the number of the contacts 22 is not increased, the number of the contacts 22 arranged in each row is reduced. pitch is reduced. Thus, the contact 22
When the pitch is small, the capacitance component between the adjacent contacts 22 becomes large, causing a problem that crosstalk increases when handling a high-frequency signal. In addition, when the pitch of the contacts 22 is reduced, the contact area between the contacts of the header and the socket is reduced, so that the contact resistance is increased or a contact failure due to a positional displacement between the header and the socket is apt to occur. There are also problems.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

(Embodiment 1) FIGS. 1 and 2 show a header 2 and FIGS. 3 and 4 show a socket 1. The header 2 includes a base 20 made of an insulating material made of a synthetic resin. On one surface of the base 20, a rectangular annular convex portion 21 is protruded. A plurality of contacts 22 are arranged in a row on both side walls in the longitudinal direction of the protrusion 21 along the outer side surface and the inner side surface, respectively. Each contact 22 is housed in a separation groove 25 formed on the inner and outer surfaces of the projection 21 . contact
The terminal 22 is made of a metal having a high electric conductivity and is continuously and integrally formed with a terminal piece 23 disposed along the other surface of the base 20. The terminal piece 23 has a bent portion at an intermediate portion, and the tip of the terminal piece 23 is separated from the base 20. Therefore, when the header 2 is surface-mounted on the printed board P2, a gap can be formed between the printed board P2 and the base 20.
The terminal pieces 23 can be connected to the printed circuit board P2 by soldering with some of the terminal pieces 23 being positioned between the base 20 and the printed circuit board P2. Here, an introduction portion 24 that tapers over the entire circumference is formed at the tip of the projection 21.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

On the other hand, the socket 1 has a base 10 made of a synthetic resin made of a synthetic resin and formed so that the outer dimensions thereof are substantially equal to the base 20 of the header 2. The base 10 has an annular groove 11 into which the rectangular annular protrusion 21 formed in the header 2 is inserted. In the opening of the concave groove 11, the introduction part 1 inclined so as to increase the opening width toward the opening so as to guide the introduction part 24 formed at the tip of the convex part 21.
4 are formed. A plurality of contacts 12 that can contact the contacts 22 arranged on the protrusion 21 of the header 2 are arranged on the inner peripheral surface of the concave groove 11. Here, each contact 1
2 are respectively housed in separation grooves 15 formed on the peripheral surface of the concave groove 11. As shown in FIG. 4, each contact 12 has a substantially U shape opened in a direction opposite to the opening of the concave groove 11 in the separation groove 15.
A contact portion 16 protrudes from the separation groove 15 on one leg. Therefore, the contact portion 16
When the contact 22 of the header 2 comes into contact with the contact 2, the contact 12 is bent and the contact portion 16 elastically contacts the contact 22 of the header 2.
On the other leg, terminal pieces 13a and 13b arranged along the back surface of the base 10 are formed continuously and integrally. That is, the contact 12 and the terminal pieces 13a and 13b are continuously and integrally formed of a metal having high electric conductivity.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

The two rows of contacts 1 inside the concave groove 11
The two and the outer two rows of contacts 12 are arranged in a staggered manner as shown in FIG. That is, similarly to the header 2, in the longitudinal direction of the base 10, the other contact 12 is disposed so as to be located between each pair of adjacent contacts 12 in one of the inner and outer rows. By adopting such an arrangement, it is possible to arrange the contacts 12 at a half pitch for two rows while keeping the pitch of the adjacent contacts 12 relatively large in each row. 12
Can be provided. Also, as for the terminal strips 13a and 13b provided continuously and integrally with each contact 12, the terminal strip 13a continuous with the contact 12 in one row is replaced with the contact strip in the other row.
12 are arranged in a staggered manner so as to be located between terminal strips 13b.

Claims (4)

[Claims] 1. A plurality of contacts are provided in each row, and even rows of contacts are arranged in groups of two rows, and one of two rows forming a pair in the row direction of the contacts. A pair is formed such that another row of contacts is positioned between each pair of adjacent contacts.
A connector wherein the contacts in a row are arranged in a staggered manner. 2. Each of the contacts is spring-biased so as to elastically contact the mating member, and has a contact portion protruding toward the mating member. 2. The connector according to claim 1, wherein a time difference of a plurality of stages is provided at the time of contact between the part and the mating member. 3. A contact portion of each row of contacts of two rows forming a set simultaneously contacts a mating member, and contact portions of other rows of contacts differ from each other in a direction in which the mating member is joined. 3. The connector according to claim 2, wherein 4. Four rows of contacts are arranged, and the contact portions provided on the inner two rows of contacts are later than the contact portions provided on the outer two rows of contacts when the mating members are joined. 4. The connector according to claim 3, wherein contact portions of the contacts in each row are provided so as to contact the mating member.