KR20090092849A - Board mount type connector and board mount type connector assembly - Google Patents

Abstract

A substrate-attached connector and an assembly of the substrate-attached connector are provided to make elastic contacting units coming in contact with conductive pads, reliably when connecting a plurality of electrical connectors to a circuit board at the same time. A substrate-attached connector(1) comprises a metal contacts. Each contact comprises connection units(21Ac,22Ac). Curved units(21Ad,22Ad) are extended from a base to the outer direction and are bent toward the inner side. Elasticity contacting units are extended from the tips of the curved units and elastically come in contact with conductive pads which are formed on a circuit board.

Description

Board Mount Connector and Board Mount Connector Assembly {BOARD MOUNT TYPE CONNECTOR AND BOARD MOUNT TYPE CONNECTOR ASSEMBLY}

The present invention provides a board mounting connector and a board mounting type having a contact provided on one side of the base fixed to the housing and having a contact portion on the other side of the base provided with an elastic contact portion elastically contacting the conductive pad on the circuit board on the other side of the base. It relates to a connector assembly.

Conventionally, an elastic contact portion elastically contacting a conductive pad on a circuit board on the other side of the base in order to be provided with a contact portion in contact with the mating contact on one side of the base fixed to the housing and to be connected to the circuit board many times for reasons such as replacement. The electrical connector which has the contact which provided the is used. As this kind of electrical connector, what is shown, for example in FIG. 8 is known (refer patent document 1). 8 is a cross-sectional view of an electrical connector of the prior art. The electrical connector 101 shown in FIG. 8 is provided with the insulating housing 110 and the some metal contact 120 attached to the housing 110. The housing 110 is installed at the center of the housing base 111 extending in the longitudinal direction (the direction perpendicular to the ground in FIG. 8) and the width direction (the left-right direction in FIG. 8) of the housing base 111 and the housing base. Protruding upward from 111 and provided with a protruding portion 112 extending in the longitudinal direction.

In addition, the plurality of contacts 120 are arranged in two rows along left and right sides of the protrusion 112 of the housing 110. Each contact 120 includes a first plate piece 121 and a second plate piece 122 returned from one end of the fitting side, and the housing plate is disposed such that the first plate piece 121 is outside and the second plate piece 122 is inside. 110). Here, the first plate piece 121 of each contact 120 is in contact with a mating contact of a mating connector 123 which is press-fitted and fixed to the housing 110 and a mating connector (not shown) extending upward from the mating part 123. The contact portion 124 and the connecting portion 125 extending downward from the fixing portion 123 and connected to the circuit board (not shown) are provided. The connection part 125 has a 1st elastic piece 125a which extends linearly toward the inclined outer side at a gentle angle from the lower end of the fixing part 123, and a straight shape toward the steep outer side from the lower end of the 1st elastic piece 125a. And a second elastic piece 125b extending in the direction and an elastic contact portion 125c provided at the tip of the second elastic piece 125b and elastically contacting the conductive pad on the circuit board. And the elastic contact part 125c of the contact 120 of each row is arrange | positioned so that it may become linear along the longitudinal direction of the housing 110 (column direction of the contact 120).

The electrical connector 101 thus constructed is fixed on the circuit board by attaching the housing 110 to the circuit board by mounting screws (not shown) or the like, and the elastic contact portion 125c of each contact 120 is electrically conductive on the circuit board. It is elastic contact with the pad. In addition, when fixing the electrical connector 101 on the circuit board, the mating connector is fitted to the 112 of the electric connector 101, and the connection part of each contact 120 is connected to the mating contact and the conductive pad on the circuit board. Is electrically connected.

Moreover, although it is not a contact, what is shown, for example in FIG. 9 is known as an electrical connector which provided the shield with the elastic contact piece which elastically contacts a circuit board (refer patent document 2). 9 is a sectional view of another conventional electrical connector. The electrical connector 201 shown in FIG. 9 includes an insulating housing 210, a plurality of metal contacts 220 mounted on the housing 210, and a metal shield 230 covering the housing 210. The plurality of contacts 220 are arranged in two rows along the longitudinal direction of the housing 210 (orthogonal to the ground in FIG. 9). Each contact 220 has an elastic contact portion 221 contacting the first circuit board 250 on the upper side and a terminal portion 222 contacting the mating contact 241 provided on the mating connector 240 on the lower side. Equipped with. The mating connector 240 is mounted on the second circuit board 260.

In addition, the metal shield 230 covers the housing 210 and is formed on the conductive pads provided on the second circuit board 260 at the lower ends of the widthwise both sides (both in the left and right directions in FIG. 2) of the housing 210. The first elastic contact piece 231 and the second elastic contact piece 232 which are elastically contacted are provided. The first elastic contact piece 231 extends linearly outward from the lower end of the shield 230 so as to elastically contact a conductive pad (not shown) formed on the second circuit board PCB. On the other hand, the second elastic contact piece 232 extends outward from the lower end of the shield 230 to be curved inward and elastically contact the conductive pad (not shown) formed on the second circuit board PCB at the tip.

[Patent Document 1] Publication No. 11-126667

[Patent Document 2] Publication No. 3-12383

However, these conventional connectors 101 and 201 have the following problems. That is, in the case of the electrical connector 101 shown in FIG. 8, since the connection part 125 of the two rows of contacts 120 mutually extends outward in the width direction of the housing 110, the circuit in the width direction of the housing 110 is carried out. It requires a large space for forming a conductive pad in contact with the elastic contact portion 125c on the substrate. In addition, since the elastic contact portions 125c of the contacts 120 in each row are arranged in a straight line along the longitudinal direction of the housing 110, the conductive pads contacting the elastic contact portions 125c also in the longitudinal direction of the housing 110. It requires a large space to form. In other words, if the elastic contact portion 125c is intended to correspond to the elastic contact portion 125c of the plurality of poles in a state where the conductive pads that are in contact with each other are large, a large space for forming the conductive pad in the long direction of the housing 110 is required. . On the other hand, if the space corresponding to the elastic contact portion 125c of the plurality of poles is to be made small in order to form the conductive pad in the longitudinal direction of the housing 110, the width of each conductive pad contacted by the elastic contact portion 125c is not reduced. Can not be done.

If the width of each conductive pad is reduced here, the elastic contact portion 125c may not easily come into contact with the conductive pad. In particular, when a plurality of electrical connectors 101 are simultaneously connected to a circuit board, the dimension tolerance of each contact 120, the mounting error with respect to the housing 110, and the dimension tolerance of the conductive pad are in the long direction of the housing 110. In some cases, the elastic contact portion 125c does not contact the conductive pad due to accumulation.

In addition, in the case of the electrical connector 201 shown in FIG. 9, the second elastic contact piece 232 extends outward from the lower end of the shield 230 and curves inward, and is formed on the second circuit board PCB at the tip. Since it contacts a conductive pad, it contributes to making the space for forming a conductive pad in the width direction of the electrical connector 101 small. However, a large space for forming a conductive pad in which the first elastic contact piece 231 also extends inclined outwardly from the lower end of the shield 230 to elastically contact the conductive pad formed on the second circuit board PCB Will cost.

Accordingly, the present invention has been made to solve these conventional problems, and an object thereof is to increase the width of each conductive pad without requiring a large space for forming the conductive pad in contact with the elastic contact portion on the circuit board. SUMMARY OF THE INVENTION An object of the present invention is to provide a board-mounted connector and a board-mounted connector assembly in which the elastic contact portion can securely contact the conductive pad even when the electrical connector is simultaneously connected to the circuit board.

In order to solve the above object, the board-mountable connector according to claim 1 of the present invention includes an insulating housing, at least one row of metal contacts attached to the housing, each of the bases fixed to the housing; A contact portion in contact with the contact provided on one side of the base, and a connection portion connected to a circuit board provided on the other side of the base, wherein the connection portion extends outwardly from the base to be curved inward and the curved portion An elastic contact portion extending from an end toward an extension line of the base and elastically contacting a conductive pad formed on the circuit board, wherein the curved portions and the elastic contact portions of one row of contacts are arranged in a lattice shape along the column direction of the contact; It is characterized by that.

In the board mounting connector according to claim 2 of the present invention, in the board mounting connector according to claim 1, the elastic contact portion extends in the opposite direction to the curved portion beyond the extension line of the base. In the board mounting connector according to claim 3 of the present invention, in the board mounting connector according to claim 1, the plate thickness of the curved portion is formed to be thinner than the plate thickness of the base. The board mounting connector according to claim 4 of the present invention is the board mounting connector according to claim 1, wherein the contacts are arranged in at least two rows. Moreover, the board mounting connector which concerns on Claim 5 of this invention is provided with the board mounting connector of any one of Claims 1-4, and the frame which accommodates this board mounting connector. It is characterized by the above-mentioned. .

According to the board-mounted connector assembly according to claim 1 and the board-mounted connector assembly according to claim 5 of the present invention, the connecting portion connected to the circuit board of the contact extends outward from the base fixed to the housing and curves inward. Since it has a curved portion and an elastic contact portion extending from the tip of the curved portion toward the extension line of the base and elastically contacting the conductive pad formed on the circuit board, a space for forming the conductive pad on the circuit board in the in and out directions of the contact is provided. Does not grow And since the elastic contact part of a contact extends outward from the base part fixed to the housing from the base part which curves inwardly and curves inwardly, a spring length is long and sufficient displacement amount can be taken when a curved part elastically deforms. As a result, a contact can be made to withstand multiple repetitive connections to the circuit board. Further, since the curved portions and the elastic contact portions of one row of contacts are arranged in a lattice shape along the column direction of the contacts, the conductive pads in contact with the elastic contacts are also lattice-shaped along the column direction of the contacts on the circuit board. For this reason, even if it respond | corresponds to the elastic contact part of many poles in the state where each conductive pad is wide, the space for forming a conductive pad in the column direction of a contact does not become large. This makes it possible to widen the width of each conductive pad without requiring a large space for forming a conductive pad in contact with the elastic contact portion on the circuit board, and the elastic contact portion can be connected to the circuit board even when a plurality of electrical connectors are connected to the circuit board at the same time. It is possible to provide a board mount connector and a board mount connector assembly that can securely contact the.

According to the board mounting connector according to claim 2 of the present invention, in the board mounting connector according to claim 1, the elastic contact portion extends in the opposite direction to the curved portion beyond the extension line of the base, so that the elastic contact portion is a circuit. When elastic contact is made with the conductive pad of the substrate, the wiping of the elastic contact portion can be ensured. Furthermore, according to the board mounting connector according to claim 3 of the present invention, in the board mounting connector according to claim 1, since the plate thickness of the curved portion is formed to be thinner than the plate thickness of the base, the stress distribution inside and outside the curved portion can be reduced. It can be controlled, and stress concentration can be avoided in the base which becomes the fixed end of a curved part rather than making plate | board thickness of a curved part constant like a base. For this reason, the contact which can endure multiple repeated connection with a circuit board can be obtained. According to the board-mounting connector according to claim 4 of the present invention, in the board-mounting connector according to claim 1, since the mating contacts are arranged in at least two rows, the contacts in each row are close to each other even if the contacts in at least two rows are arranged. You can.

1 is a front view of a board mounting connector according to the present invention.

FIG. 2 is a plan view of the board mounting connector shown in FIG. 1. FIG.

FIG. 3 is a bottom view of the board mounting connector shown in FIG. 1. FIG.

It is a left side view of the board | substrate mounting connector shown in FIG.

FIG. 5: shows the cross section of the board | substrate mounting type connector shown in FIG. 1, 5a is sectional drawing along the 5A-5A 'line in FIG. 1, and 5b is sectional drawing along the 5B-5B' line in FIG.

6 is a cross-sectional view of the board-mounted connector assembly connected to the circuit board.

7 is a schematic plan view of a conductive pad formed on a circuit board.

8 is a cross-sectional view of an electrical connector of the prior art.

9 is a sectional view of another conventional electrical connector.

Explanation of symbols on the main parts of the drawing

1 Board Mount Connector 10 Housing

21: first contact 21A: first row contact

21Aa: Base 21Ab: Contact

21Ac: Connection part 21Ad: Curved part

21Ae: Elastic Contact 21B: Second Contact

21Ba: Base 21Bb: Contact

21Bc: Connection portion 21Bd: Curved portion

21Be: elastic contact portion 22: second row contact

22A: Third Contact 22Aa: Donation

22Ab: Contact 22Ac: Connection

22Ad: Bend 22Ae: Elastic Contact

22B: 4th Contact 22Ba: Donation

22Bb: Contact 22Bc: Connection

22Bd: Bend 22B: Elastic Contact

30: board mounting connector assembly

40: frame PCB: circuit board

PA, PB: Conductive Pad L: Extension

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a board mounting connector according to the present invention. FIG. 2 is a plan view of the board mounting connector shown in FIG. 1. FIG. FIG. 3 is a bottom view of the board mounting connector shown in FIG. 1. FIG. It is a left side view of the board | substrate mounting connector shown in FIG. FIG. 5: shows the cross section of the board | substrate mounting type connector shown in FIG. 1, 5a is sectional drawing along the 5A-5A 'line | wire in FIG. 1, and 5b is sectional drawing along the 5B-5B' line | wire in FIG. 6 is a cross-sectional view of the board-mounted connector assembly connected to the circuit board.

The board-mounting connector 1 (hereinafter simply referred to as a connector) 1 shown in FIGS. 1 to 5 includes an insulating housing 10 and a first row contact 21 and a second row contact mounted in two rows on the housing 10. (22) is provided. Here, the housing 10 extends along the longitudinal direction of the housing base 11 and the housing base 11 extending in the longitudinal direction (left and right direction in FIG. 1) as shown in FIGS. The fitting part 12 which protrudes upwards (upward in FIG. 1) from the base 11 is provided. The housing 10 is formed by molding an insulating resin. The fitting part 12 of the housing | casing 10 is provided with the fitting recess 13 which accommodates the fitting part of the mating connector (not shown) extended along the longitudinal direction of the fitting part 12. As shown in FIG. Moreover, as shown to FIG. 5A, 5B, the 1st recessed part 15a is provided in the front side (left side in FIG. 5A) with respect to the finishing wall 14 extended in a longitudinal direction in the lower part of the housing base 11, and is closed. The second recessed part 15b is provided in the rear side with respect to the wall 14. Both the first recessed part 15a and the second recessed part 15b extend along the longitudinal direction of the housing base 11. In addition, the bottom of the fitting recess 13 includes a plurality of first row contact fixing holes 18a penetrating toward the first recessed portion 15a and a plurality of second row fixing holes penetrating toward the second recessed portions 15b. 18b is provided. The first row contact fixing holes 18a and the second row contact fixing holes 18b are formed at predetermined pitches along the longitudinal direction of the housing base 11, respectively. The first row contact fixing holes 18a and the second row contact fixing holes 18b are formed at positions facing each other in the longitudinal direction of the housing base 11. In addition, a plurality of first row contact receiving grooves 19a extending upward from the first row contact fixing holes 18a are provided at the front side of the fitting recess 13, and at the rear side of the fitting recess 13, the second row is provided. A plurality of second row contact receiving grooves 19b extending upward from the contact fixing hole 18b are provided. Moreover, press-in posts 31 and 32 with respect to the frame 40 (refer to FIG. 6) are provided at both ends in the longitudinal direction of the housing 10.

Next, the first row contact 21 has a first contact 21A and a second contact 21B which are alternately mounted at a predetermined pitch along the front side of the fitting recess 13. As shown in FIG. 5A, each of the first contacts 21A is provided with a base 21Aa fixed to each of the first row contact fixing holes 18a and a relative contact provided above the base 21Aa. The contact portion 21Ab in contact with the contact portion and the connection portion 21Ac connected to the circuit board (PCB; see FIG. 6) provided below the base portion 21Aa are provided. Each first contact 21A is formed by punching and bending a conductive metal plate having elasticity. The contact portion 21Ab extends upwardly so that the base portion 21Ab protrudes into the fitting recess 13 at the upper end of the base portion 21Aa, and its tip is engaged with the protrusion provided in the fitting portion 12 of the housing 10 to free it. It is supposed to be loaded. The contact portion 21Ab is positioned at a position corresponding to the first row contact receiving groove 19a and is displaceable in the first row contact receiving groove 19a. In addition, as shown in Fig. 5A, the connecting portion 21Ac extends from the lower end of the base 21Aa to the outside (rear) and curves inward (front side), and the base 21Aa at the tip of the curved part 21Ad. Is provided with an elastic contact portion 21Ae extending toward the extension line L. The plate thickness of the curved portion 21Ad is in elastic contact with the conductive pad PA (see FIG. 7) formed thinner than the plate thickness of the base portion 21Aa. The elastic contact portion 21Ae extends in the reverse direction (front side) with the curved portion 21Ad beyond the extension line L of the base portion 21Aa. A curved portion 21Ad is positioned on the front surface of the finishing wall 14 of the housing 10, and a groove 16a is formed to allow displacement thereof.

In addition, as shown in FIG. 5B, the second contact 21B is disposed relative to the base 21Ba and the base 21Ba that are fixed to the first row contact fixing holes 18a, similarly to the first contact 21A. The contact part 21Bb which contacts a contact (not shown), and the connection part 21Bc connected to the circuit board PCB provided below the base 21Ba are provided. Each second contact 21B is formed by punching and bending a conductive metal plate having elasticity. The contact portion 21Bb extends upwardly so as to protrude into the fitting recess 13 at the upper end of the base 21Bb, and its tip is engaged with the protrusion provided on the fitting portion 12 of the housing 10 so as to be preloaded. have. The contact portion 21Bb is located at a position corresponding to the first row contact receiving groove 19a and is displaceable in the first row contact receiving groove 19a. Moreover, the position which contacts the relative contact of the contact part 21Bb is shift | deviated upward with respect to the position which contacts the relative contact of the contact part 21Ab. Moreover, as shown in FIG. 5B, the connection part 21Bc extends in the outer direction (front) from the lower end of the base 21Ba, and curves inward (rear) and the base part 21Bad at the front-end | tip of the curved part 21Bd. The elastic contact part 21Be which extends toward the extension line L of () is provided. The plate | board thickness of the curved part 21Bd is formed uniformly thinner than the plate | board thickness of the base 21Ba. The elastic contact portion 21Be elastically contacts the conductive pad PB formed on the circuit board PCB. The elastic contact portion 21Be extends in the reverse direction (rear side) with the curved portion 21Bd over the extension line L of the base 21Ba. And the front part of the 1st recessed part 15a of the housing | casing 10 has the curved part 21Bd located, and the notch 17a for allowing the displacement is formed.

Here, the curved portion 21Ad of the first contact 21A extends backward from the lower end of the base 21Aa to bend forward, and the curved portion 21Bd of the second contact 21B is forward from the lower end of the base 21Ba. It extends and curves backward. For this reason, as a result, the curved portions 21Ad and 21Bd are arranged in a lattice shape along the column direction of the first row contact 21. In addition, the elastic contact portion 21Ae extends in the opposite direction (front side) to the curved portion 21Bd beyond the extension line L of the base 21Aa, while the elastic contact portion 21Be extends over the extension line L of the base 21Ba and the curved portion. It extends in the reverse direction (rear side) with 21Bd. For this reason, as a result, the elastic contact portions 21Ae and 21Be are arranged in a lattice shape along the column direction of the first contact rows 21. When the elastic contact portions 21Ae and 21Be are arranged in a lattice shape along the column direction of the first contact row 21, the elastic contact portions 21Ae and 21Be are each crossed over the extension line L of the base 21Aa, and are opposite to the curved portion 21Ad and the base portion ( It is not necessary to extend beyond the extension line L of 21Ba in the opposite direction to the curved portion 21Bd.

In addition, the second row contact 22 has a third contact 22A and a fourth contact 22B which are alternately mounted at a predetermined pitch along the rear wall of the fitting recess 13. The third contact 22A is disposed to face the first contact 21A in the front-rear direction of the connector 1, as shown in FIG. 5A. Each of the third contacts 22A is similar to each of the first contacts 21A, and a base contact 22Aa fixed to each of the second row contact fixing holes 18b and a relative contact provided on the upper side of the base 22Aa (not shown). A contact portion 22Ab connected to the contact portion and a connection portion 22Ac connected to a circuit board PCB provided below the base portion 22Aa are provided. Each third contact 22A is formed by punching and bending a conductive metal plate having elasticity. The contact portion 22Ab extends upwardly so as to project into the fitting recess 13 at the upper end of the base 22Ab, and its tip is engaged with the protrusion provided in the fitting portion 12 of the housing 10 so as to be preloaded. have. The contact portion 22Ab is located at a position corresponding to the second row contact receiving groove 19b and is displaceable in the second row contact receiving groove 19b. Moreover, the position which contacts the relative contact of the contact part 21Ab is shift | deviated in the up-down direction with respect to the position which contacts the relative contact of the contact part 21Ab. Moreover, as shown in FIG. 5A, the connection part 22Ac extends in the outer direction (rear) from the lower end of the base 22Aa to bend inwardly (front side), and the base part 22Aa at the tip of the curved part 22Ad. The elastic contact part 22Ae which extends toward the extension line L of () is provided. The plate | board thickness of the curved part 22Ad is formed thinner and uniform than the plate | board thickness of the base part 22Aa. The elastic contact portion 22Ae is in elastic contact with the conductive pad PA formed on the circuit board PCB. The elastic contact portion 21Ae extends over the extension line L of the base 21Aa and is opposite to the curved portion 21Ad (front side). Stretched In the rear wall of the second recessed portion 15b of the housing 10, a curved portion 22Ad is located and a notch 17b is formed to allow the displacement.

Moreover, as shown in FIG. 5B, the 4th contact 22B is arrange | positioned facing the 2nd contact 21B in the front-back direction of the connector 1. As shown in FIG. As shown in Fig. 5B, each of the fourth contacts 22B is disposed on the base 22Ba fixed to the respective second row contact fixing holes 18b and on the upper side of the base 22Ba, similarly to the third contact 22A. The contact part 22Bb which contacts the partner contact (not shown) provided, and the connection part 22Bc connected to the circuit board PCB provided below the base 22Ba are provided. Each fourth contact 22B is formed by punching and bending a conductive metal plate having elasticity. The contact portion 22Bb extends upwardly so as to protrude into the fitting recess 13 at the upper end of the base 22Bb, and its tip is engaged with the protrusion provided in the fitting portion 12 of the housing 10 to be preloaded. have. The contact portion 22Bb is located at a position corresponding to the second row contact receiving groove 19b and is displaceable in the second row contact receiving groove 19b. Moreover, the position which contacts the mating contact of the contact part 22Bb is shift | deviated in the up-down direction with respect to the position which contacts the mating contact of the contact part 22Ab of the 3rd contact 22A. Moreover, as shown to FIG. 5A, the connection part 22Bc extends in the outer direction (front) from the lower end of the base 22Ba, and curves inward (rear) and the base part 22Bad at the tip of the curved part 22Bd. The elastic contact part 22Be extended toward the extension line L of (). The plate | board thickness of the curved part 22Bd is formed thinner and uniform than the plate | board thickness of the base part 22Ba. The elastic contact portion 22Be elastically contacts the conductive pad PA formed on the circuit board PCB. The elastic contact portion 21Be extends in the reverse direction (back side) with the curved portion 21Bd over the extension line L of the base 22Ba. A curved portion 22Bd is positioned at the rear surface of the finishing wall 14 of the housing 10 and a groove 16b is formed to allow displacement thereof.

Here, the curved portion 22Ad of the third contact 22A extends backward from the lower end of the base 22Aa to bend forward, and the curved portion 22Bd of the fourth contact 22B is moved forward from the lower end of the base 22Ba. It extends and curves backward. For this reason, as a result, the curved portions 22Ad and 22Bd are arranged in a lattice shape along the column direction of the second row contact 21. Further, the elastic contact portion 22Ae extends in the opposite direction (front side) to the curved portion 22Ad beyond the extension line L of the base 22Aa, while the elastic contact portion 22Bc extends over the extension line L of the base 22Ba and the curved portion. It extends in the reverse direction (rear side) with 22Bd. For this reason, as a result, the elastic contact portions 22Ae and 22Be are arranged in a lattice shape along the column direction of the second contact row 22. In addition, when the elastic contact portions 22Ae and 22Be are arranged in a lattice shape along the column direction of the second contact row 22, the elastic contact portions 22Ae and 22Be are each crossed over the extension line L of the base 22Aa, and are opposite to the curved portion 22Ad and the base portion. It is not necessary to extend beyond the extension line L of 22Ba in the opposite direction to the curved part 22Bd.

Next, the conductive pad formed on the circuit board will be described with reference to FIG. 7. 7 is a schematic plan view of a conductive pad formed on a circuit board. The conductive pads PA and PB formed on the circuit board PCB are formed in two rows corresponding to the first row contact 21 and the second row contact 22 (in FIG. 7, the first row of conductive pads ( PA, PB) only cities). The conductive pads PA and PB of the first row are lattice-shaped at a pitch p along the column direction such that the elastic contact portions 21Ae and 21Be of the first row contact 21 come into contact with each other.

The conductive pads PA and PB in each row extend outwardly from the bases 21Aa and 21Ba, 22Aa, and 22Ba of the first and second row contacts 21 and 22 to be curved inwardly. The elastic contacts 21Aa and 22Ba, 22Aa and 22Ba, which extend from the ends of the curved portions 21Ad and 22Bd and 21Ad and 22Bd, extend over the extension line L of the bases 21Aa and 21Ba, 22Aa and 22Ba. Therefore, the space for forming the conductive pads PA and PB on the circuit board PCB in the inner and outer directions (front and rear directions) of the connector 1 does not increase.

In addition, the elastic contact portions 21Ae and 21Be, 22Ae and 22Be of the first and second row contacts 21 and 22 are arranged in a lattice shape along the column direction of the contacts 21 and 22 and correspondingly each conductive pad ( PA and PB) are lattice-shaped along the column direction. For this reason, even if the conductive pads PA and PB to which the elastic contact portions 21Ae and 21Be, 22Ae and 22Be are in contact with each other are wide, the first contact is made to correspond to the elastic contact portions 21Ae and 21Be, 22Ae and 22Be of the multiple poles. The space for forming the conductive pads PA and PB in the column direction of the row and second row contacts 21 and 22 does not increase. Accordingly, the width of each of the conductive pads PA and PB is reduced without requiring a large space for forming the conductive pads PA and PB in contact with the elastic contacts 21Ae and 21Be, 22Ae and 22Be on the circuit board PCB. The elastic contact portions 21Ae and 21Be and 22Ae and 22Be can reliably contact the conductive pads PA and PB even when a plurality of connectors 1 are simultaneously connected to the circuit board PCB. .

That is, when the conductive pads P are formed in a straight line along the column direction as indicated by the broken line in FIG. In order to make it small, the width of each conductive pad P must be made small. When the width of each conductive pad P is made small, especially when several connectors are connected to a circuit board simultaneously, the dimension tolerance of each contact, the mounting error with respect to a housing | casing, and the dimension tolerance of the conductive pad P are the same as that of the conductive pad P. The elastic contact portion may not contact the conductive pad P due to the accumulation in the column direction or the like. The elastic contacts 21Ae and 21Be, 22Ae and 22Be of the first and second row contacts 21 and 22 are lattice-shaped along the column direction of the first and second row contacts 21 and 22 and corresponding thereto. This arrangement can be avoided by arranging the conductive pads PA and PB in each column in a lattice shape along the column direction.

In addition, a plurality of connectors 1 are prepared to connect a plurality of connectors 1 to a circuit board (PCB) at the same time, and each connector 1 is accommodated in the connector receiving hole 41 of the frame 40 as shown in FIG. And fixed together. Each connector 1 is fixed in the connector accommodating hole 41 of the frame 40 by press-fitting the press-in posts 32 and 31 provided in the longitudinal direction both ends of the housing 10 to the frame 40. This completes the board mounting connector assembly 30. The stopper 43 is formed to protrude inward in the connector receiving hole 41 of the frame 40. When the connector 1 is press-fitted to the frame 40, the housing base 11 abuts against the stopper 43, and its movement is restricted.

As shown in FIG. 6, the elastic contact portions 21Ae, 21Be, 22Ae, and 22Be of the connector 1 are elastically contacted with the conductive pads PA and PB formed on the circuit board PCB, respectively, and the mounting screw 44 is provided. Is screwed into the screw hole 42 of the frame 40 through the through hole PCB1 formed in the circuit board PCB. Thereby, the connection with respect to the circuit board PCB of the connector 1 is completed.

In this state, when the fitting portion of the mating connector is fitted to the fitting recess 13 of the connector 1, the mating contact is the contact portion of the contact portions 21Ab and 21Bb of the first row contact 21 and the second row contact 22. 22Ab and 22Bb are brought into contact with each other so that the mating contacts and the conductive pads PA and PB on the circuit board PCB are electrically connected. When replacing the circuit board PCB, the mounting screw 44 is separated from the screw hole 42 of the frame 40, and the elastic contact portions 21Ae, 21Be, 22Ae and 22Be of the connector 1 are respectively replaced with new circuits. Elastic contact with the conductive pads PA and PB formed on the substrate PCB, and the mounting screw 44 is screwed into the screw hole 42 of the frame 40 through the through hole PCB1 formed in the circuit board PCB. Combine it.

Here, the elastic contact portions 21Ae, 21Be, 22Ae, and 22Be of the first and second row contacts 21 and 22 extend outward from the bases 21Aa, 21Ba, 22Aa, 22Ba fixed to the housing 10. Extends from the tips of the curved portions 21Ad, 21Bd, 22Ad, 22Bd. Therefore, when the spring length is long and the curved portions 21Ad, 21Bd, 22Ad, and 22Bd are elastically deformed, a sufficient amount of displacement can be taken. As a result, the first and second column contacts 21 and 22 may be used for a plurality of repeated connections to the circuit board PCB.

In addition, the elastic contact portions 21Ae, 21Be, 22Ae, and 22Be extend in the opposite direction to the curved portions 21Ad, 21Bd, 22Ad, and 22Bd beyond the extension lines L of the bases 21Aa, 21Ba, 22Aa, and 22Ba. Thus, when the elastic contact portions 21Ae, 21Be, 22Ae, 22Be elastically contact the conductive pads PA, PB of the circuit board PCB, the wiping of the elastic contact portions 21Ae, 21Be, 22Ae, 22Be, that is, For example, in the case of the elastic contact portion 21Ae, it is possible to ensure sliding in the left direction in which the extension line L falls.

Furthermore, since the plate thickness of the curved portions 21Ad, 21Bd, 22Ad, 22Bd is formed thinner than the plate thicknesses of the bases 21Aa, 21Ba, 22Aa, 22Ba, the internal stress distribution of the curved portions 21Ad, 21Bd, 22Ad, 22Bd can be controlled. The base which becomes the fixed end of the curved portions 21Ad, 21Bd, 22Ad, 22Bd rather than making the plate thickness of the curved portions 21Ad, 21Bd, 22Ad, 22Bd constant like the bases 21Aa, 21Ba, 22Aa, 22Ba. Concentration of stress in 21Aa, 21Ba, 22Aa, 22Ba) can be avoided. Thus, the first and second row contacts 21 and 22 can be obtained to withstand multiple repetitive connections to the circuit board PCB.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this, A various deformation | transformation and improvement can be made. For example, one or more rows of contacts may be provided, and two rows of contacts are not necessarily required. In addition, the plate | board thickness of curved part 21Ad, 21Bd, 22Ad, 22Bd does not necessarily need to be thinner than the plate | board thickness of base 21Aa, 21Ba, 22Aa, 22Ba, and may be made the same as base 21Aa, 21Ba, 22Aa, 22Ba. .

Claims (5)

An insulating housing and at least one row of metal contacts mounted to the housing, Each of the contacts includes a base fixed to the housing, a contact portion for contacting the contact provided on one side of the base, and a connection portion for connecting to a circuit board provided on the other side of the base, the outer side of the connection portion and the base. A curved portion extending in a direction and curved inwardly and extending from an end of the curved portion toward an extension line of the base, and an elastic contact portion elastically contacting a conductive pad formed on the circuit board, And said curved portion and said elastic contact portion of one row of contacts are arranged in a lattice shape along the column direction of said contact. The method of claim 1, And the elastic contact portion extends in an opposite direction to the curved portion beyond the extension line of the base. The method of claim 1, The board thickness of the curved part is formed thinner than the plate thickness of the base. The method of claim 1, And said contacts are arranged in at least two rows. A board mounting connector assembly according to any one of claims 1 to 4, and a frame for accommodating the board mounting connector.