KR101418887B1 - Electric connector for circuit board - Google Patents

Abstract

[PROBLEMS] To provide an electric connector for a circuit board capable of downsizing a connector in a direction opposite to a side wall of a housing without shortening a connecting portion.
A housing 10 having two side walls 13 and a plurality of terminals 20 arranged and supported on the side wall 13 are provided. The terminal 20 is supported by the side wall 13 and includes an inner corner portion (leg portion) 21A extending in the vertical direction at the position of the accommodating concave portion 15 side, An outer corner portion 21B extending in the vertical direction from an outer side position of the inner corner portion 21A and a connecting portion 21B connecting the upper end 21A-1 of the inner corner portion 21A and the upper end 21B- The outer corner portion 21B of the connector 1 having the connection portion 24 extending outwardly from the lower end 21B-2 of the outer corner portion 21B has an outer corner 21B- The lower end 21B-2 is located on the inner side of the upper end 21A-1, and the connection portion 24 is located in a range where a part of the connection portion 24 overlaps with the outer side portion 21B in the opposite direction.

Description

ELECTRIC CONNECTOR FOR CIRCUIT BOARD BACKGROUND OF THE INVENTION [0001]

The present invention relates to an electrical connector for a circuit board.

There is known an electrical connector for a circuit board, for example, which is arranged on a circuit board and in which a plurality of terminals are held in two sidewalls forming a pair of housings, for example, a connector of Patent Document 1 is known. The connector of Patent Document 1 includes a housing having a substantially rectangular parallelepipedal outer shape capable of accommodating a mating connector from above in a housing space surrounded by a peripheral wall and two side walls extending in the longitudinal direction of the housing, And has a plurality of terminals arranged and supported in the housing.

In the connector of Patent Document 1, the terminal has a reverse U-shaped portion, and the inverted U-shaped portion is press-fitted into the side wall of the housing from below or integrally molded with the side wall. The two leg portions of the inverted U-shaped portion are parallel to each other at a predetermined interval in the opposite directions (connector width direction) of the two side walls and extend straight in the vertical direction. The outer corner portion located outside in the opposite direction is bent at a lower end thereof, and a connection portion capable of being solder-connected to a corresponding circuit portion on the circuit board extends outside the housing toward the outside in the opposite direction.

Japanese Patent Application Laid-Open No. 2002-033145

Generally, the connector for a circuit board is required to have a reduced in height, that is, a dimension in a direction perpendicular to the plane of the circuit board. In addition, a space for installing other electronic components on the circuit board is secured It is preferable that it is downsized in a direction parallel to the circuit board. In the connector of the above-described Patent Document 1, since the connection portion of the terminals extends outside the housing from the lower end of the outer corner portion in the direction opposite to the side walls, the dimension in the opposite direction is increased by the amount of the extension. There is room for improvement in miniaturization of the connector in the opposite direction. However, for example, if the connector is simply shortened to reduce the size of the connector, the area of the solderable portion of the connector becomes small, and electrical conduction between the connector and the circuit board becomes unstable In addition, there is a fear that the fixing strength of the connector to the circuit board is lowered.

In view of such circumstances, it is an object of the present invention to provide a circuit board connector capable of downsizing the connector in the direction opposite to the side wall of the housing without shortening the connecting portion.

An electrical connector for a circuit board according to the present invention is an electrical connector arranged on a circuit board and accommodating a mating connector from above and fittingly connected to the mating connector, And a plurality of terminals arranged on at least one of the side walls of the two side flaps, wherein the housing is arranged such that the inner side faces of the two side walls oppose each other, Wherein the terminal is supported by the side wall and includes an inner corner portion extending in the vertical direction at a position on the accommodation space side in the direction opposite to the side walls, An outer side corner portion extending in the vertical direction from the outer side position of the corner portions, And it has a connecting portion for connecting the re-connection portion from the lower end of the outer leg which is solder connected to a corresponding circuit on the circuit board and extend toward the opposite direction outside.

In the electrical connector for a circuit board according to the present invention, in the outer corner portion, the lower end of the outer corner portion is located inwardly in the opposite direction from the upper end, and at least a part of the outer corner portion overlaps with the outer corner portion in the opposite direction Is located within a range in which it is possible to obtain a desired image.

In the present invention, the outer corner of the terminal is positioned such that the lower end of the outer corner portion is located inside the opposite direction of the two sidewalls with respect to the upper end, and the connection portion extends from the lower end of the outer corner portion toward the outside in the opposite direction , At least a part of the connecting portion is located below the outside corner portion and overlaps with the outside corner portion in the opposite direction. Therefore, as compared with the conventional case where the outer corner portion extends straight in the vertical direction in parallel with the inner corner portion and the connection portion is directed from the lower end of the outer corner portion to the outside of the housing, in the present invention, And is located closer to the inner side in the opposite direction by a portion overlapping with the outer corner portion. As a result, even if the length of the connecting portion is not changed, the length of the portion of the connecting portion that is located outside the housing becomes shorter, so that the connector becomes smaller in the opposite direction. Further, since the length of the connecting portion itself is not shortened, the electrical continuity between the connector and the circuit board is not unstable, and the fixing strength of the connector to the circuit board is not lowered.

In the present invention, it is preferable that at least a part of the lower end portion of the outer corner portion overlaps with the inner corner portion in the opposite direction of the side wall. At least a part of the lower end of the outer corner part overlaps with the inner corner part in the opposite direction of the side wall so that the connection part of the terminal can be further positioned inwardly in the opposite direction by the overlapping part, It is possible to shorten the length of the portion to be formed. Therefore, the connector can be made smaller in the opposite direction.

In the present invention, it is preferable that the outer corner portion is inclined or curved so as to approach the inner corner portion from the upper end toward the lower end.

In the present invention, the inner corner portion may be exposed toward the inside of the accommodation space and positioned so as to be connectable with the terminal of the mating connector at a position near the upper end. In the case where the inner corner portion is connectable with the terminal (mating terminal) of the mating connector at a position close to the upper end, when the connectors are fitted to each other, the inner side corner portions and the side walls are separated from the housing supporting the mating terminal and the mating terminal And receives the pressing force toward the outside in the opposite direction, and the side wall bends outward with the lower portion as a point. When the inner corner portion and the outer corner portion extend straight in parallel with a predetermined gap over the entire vertical direction as in the conventional art, the predetermined intervals are formed at the lower ends of both corner portions as in the case of the upper end, The side wall is hard to be bent outward because the outer corner portion acts to generate a counter moment that resists the pushing force. Therefore, when connecting to the terminal of the mating connector, the inner corner portion is also hard to bend, so that the insertion force required for inserting the mating connector becomes large.

On the other hand, in the present invention, since the lower ends of the outer side corner portions are located inwardly of the upper side in the opposite direction, that is, near the inner side corner portions, and the gap between the lower ends does not occur or is small, the opposite moment . Therefore, since the side wall and the inner corner portion are easily bent outwards with the lower portion as a fulcrum, the insertion force required for inserting the mating connector at the time of fitting the connector can be reduced.

In the present invention, the terminal may be supported by the housing in the form of integral molding with the housing. Further, the terminal may be formed in at least one of the inner corner portion, the outer corner portion, and the connecting corner portion so that the supported portion is press-fitted and supported from the not-supported portion to the side wall.

As described above, in the present invention, since the outer corner portion of the terminal is positioned at the inner side in the opposite direction of the side wall than the upper end at the lower end of the outer corner portion, at least a part of the connection portion is located at the lower side of the outer corner portion It is possible to place the connecting portion inwardly in the opposite direction by an amount corresponding to the overlapping portions. Therefore, even if the length of the connecting portion is not changed, the length of the portion of the connecting portion located outside the housing can be shortened, and the connector can be downsized in the facing direction. In addition, since the length of the connecting portion itself is not required to be shortened, electrical continuity between the connector and the circuit board becomes unstable, and the fixing strength of the connector to the circuit board is prevented from being lowered.

Fig. 1 is a perspective view of a connector according to the first embodiment, showing a part in the long direction by taking a section at the position of the terminal in the longitudinal direction of the housing. Fig.
Fig. 2 is a cross-sectional view of the connector and the mating connector according to the first embodiment at the position of the terminal in the longitudinal direction of the housing, showing the state before the connector is fitted.
Fig. 3 (A) is a perspective view of a connector according to a second embodiment of the present invention, showing a part in the long direction by taking a cross section at the position of the terminal in the longitudinal direction of the housing, In the longitudinal direction of the housing.
Fig. 4A is a perspective view of a connector according to a third embodiment of the present invention, showing a part of the connector in its long direction by taking a cross section at the position of the terminal in the longitudinal direction of the housing, and Fig. In the longitudinal direction of the housing.

(Mode for carrying out the invention)

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electrical connector for a circuit board according to the present invention will be described below with reference to the accompanying drawings.

≪ First Embodiment >

[Configuration of connector]

1 is a perspective view of a connector 1 according to the present embodiment, showing a cross section at a position of a terminal 20 in a longitudinal direction of the housing. 2 is a cross-sectional view of the connector 1 and the mating connector 2 according to the present embodiment at the position of the terminal 20 in the longitudinal direction of the housing, showing the state before connector fitting.

The connector 1 according to the present embodiment is an electrical connector which is disposed on a circuit board (not shown) and receives the mating connector 2 from above and is fitted and connected to the mating connector 2, A plurality of metal terminals 20 arranged and supported on the housing 10 in the longitudinal direction of the housing 10 and a plurality of metal terminals 20 extending in the longitudinal direction of the housing 10 And the fixing bracket 30 supported on the housing 10 at both outer positions with respect to the arrangement range of the terminals 20 in the terminal arrangement direction.

As shown in Figs. 1 and 2, the housing 10 includes a bottom wall 11 extending in the longitudinal direction of the terminal arrangement facing the surface of a circuit board (not shown) A protruding wall portion 12 which extends in the longitudinal direction between the side walls 13 and protrudes upward from the bottom wall 11 and a protruding wall portion 12 which is erected upward from the bottom wall 11, And has a circumferential wall surrounding it. The circumferential wall has two side walls 13 extending in the longitudinal direction so as to oppose each other and two side walls 13 extending in the short side direction orthogonal to the longitudinal direction by connecting the ends of the two side walls 13 And has a pair of end walls 14. The rectangular annular space opened upward between the main wall and the projecting wall portion 12 is formed as a receiving recess 15 for receiving the fitting portion of the mating connector 2. [

The projecting wall portion 12 has a regulating projection 12A at a position corresponding to each other between the adjacent terminals 20 in the longitudinal direction. The regulating projection 12A protrudes in the short direction from the side surface of the protruding wall portion 12 facing the inner side surface of the side wall 13 and extends in the vertical direction. The regulating projection 12A is configured such that when the connector fitting process and the connector fitting state bring the protruding portion of the regulation protruding portion 12A into abutment with the fitting portion of the mating connector 2 in the short side direction of the housing 10 , And the position of the mating connector 2 in the shorter direction is regulated. As a result, it is possible to prevent the so-called " sinking " in which the elastic arm portion 22 of the terminal 20 to be described later is excessively pressed and displaced by the mating terminal 50, have.

The protruded wall portion 12 is formed such that side faces thereof are offset from the short side direction at positions between adjacent regulatory protruding portions 12A and allow elastic displacement of the elastic shoulder 22 of the terminal 20 to be described later A displacement allowing groove 12B is formed. The displacement allowance groove 12B is formed on both side surfaces of the protrusion wall 12 as shown in Figs. 1 and 2. The displacement allowance groove 12B of the side surface is formed by the protrusion wall 12, (A left-right direction in Fig. 2) by a partition wall portion 12C extending downward from the upper end, and each of them is formed with a groove portion extending in the vertical direction. In the lower portion, The displacement allowing trenches 12B communicate with each other in the short direction to form one slit-shaped space opened downward.

As shown in Figs. 1 and 2, the bottom wall 11 penetrates in a window shape in a vertical direction at a position corresponding to the terminal 20 in the longitudinal direction at a central position in the short side direction , So that the external space communicates with the displacement allowing groove portion 12B. The bottom wall 11 does not extend to the lower side of the side wall 13 at both ends in the short side direction and a groove portion 11A is formed below the side wall 13. [ A connecting portion 24 of the terminal 20 described later is located in the groove portion 11A and the connecting portion 24 of the connecting portion 24 is connected to the lower surface of the side wall 13, And a space is formed between the side surface of the base material and the side surface of the base material. When the connecting portion 24 is connected to the corresponding circuit portion of the circuit board by soldering, molten solder is introduced into the space. The bottom wall 11 is formed with a partition wall 11B for separating the groove portions 11A adjacent to each other at positions between the adjacent terminals 20 in the longitudinal direction.

The terminal 20 is formed by bending a piece of metal plate in a substantially transverse S-shape in the plate thickness direction and is supported on the housing 10 in a state of being arranged in two rows symmetrical with respect to the projecting wall portion 12. The terminal 20 includes an inverted U-shaped supported portion 21 supported on a side wall 13 of the housing 10 and a projected wall portion 12 located near the projected wall portion 12 in the short- An elastic member 22 extending in the up and down direction and having a free end and an elastic member 22 extending from the bottom wall 11 of the housing 10 to extend in the short side direction, A base portion 23 for connecting the elastic portion 22 to the base portion 21A and a base portion 23 extending from the other corner portion of the supported portion 21 And a connection portion 24 connected to the corresponding circuit portion on the circuit board by soldering. 1 and 2, the terminal 20 is supported at the supported portion 21 and the base portion 23 by integral mold molding with the housing 10. As shown in Fig.

The elastic waist portion 22 is bent from the base portion 23 through the transition portion 25 and extends upward along the protruding wall portion 12 and is bent in the plate thickness direction so that the short So that it can be elastically displaced in the direction of the arrow. The elastic portion 22 is formed as a connecting portion 22A for connecting to the mating terminal 50 of the mating connector 2 which will be described later and whose upper end portion on the free end side is convexly curved toward the side wall 13. [ The curved portion of the connecting portion 22A protrudes from the projecting portion of the regulating projection 12A of the housing 10 in the short side direction.

As shown in Fig. 1, the base portion 23 is supported by a bottom wall 11 of the housing 10 by integral molding. The upper surface of the base portion 23 and the upper surface of the bottom wall 11 form the same level surface so that the upper surface of the base portion 23 is exposed to the accommodating concave portion 15, And the lower portion is buried in the bottom wall 11. [

As shown in Fig. 2, the supported portion 21 has an inverted U-shape as described above, and has one corner portion 21A (hereinafter referred to as " lower corner portion ") extending in the vertical direction along the inner surface of the side wall 13 (Hereinafter referred to as " inner corner portion 21A ") extending in the vertical direction at a position outside the inner corner portion 21A in the short side direction And a connecting portion 21C connecting the upper end 21A-1 of the inner corner portion 21A and the upper end 21B-1 of the outer corner portion 21B.

The inner corner portion 21A is exposed toward the inside of the accommodating concave portion 15 and protrudes into the accommodating concave portion 15 so as to face the contact portion 22 at a position near the upper end 21A- 21A-3 are formed. As shown in Fig. 1, the lock portion 21A-3 is formed by, for example, press working, and its width dimension (dimension in the longer direction of the housing) (See Fig. 1). The lock portion 21A-3 is engaged with the locked portion 51B-1 of the mating terminal 50 of the mating connector 2 to be described later to maintain the connector fitting state, And also serves to assist the contact portion 22A by making electrical contact with the contacted portion 51B-1 when the contacted portion 51B-1 is engaged with the contacted portion 51B-1.

The outer corner portion 21B is located within the range of the side wall 13 in the short side direction of the housing 10 and is located at the lower side 21B-2 from the upper side 21B- And the lower end 21B-2 is positioned on the inner side in the shorter direction than the upper end 21B-1, so that the lower end 21B-2 is inclined to approach the inner corner portion 21A. 2, in the short side direction, a part of the lower end 21B-2 of the outer corner portion 21B overlaps with the inner side corner portion 21A.

In the state where the supported portion 21 is supported by the side wall 13 by integral molding, the inside corner portion 21A has both side faces (both side faces in the longitudinal direction of the housing) and the outside corner portions 21B And the plate surface exposed from the side wall 13 is positioned so as to form the same plane as the inner side surface of the side wall 13. The plate surface facing the side wall 13 is in contact with the side wall 13, Further, the outer corner portion 21B and the connecting portion 21C are supported in the side wall 13 by being embedded.

As shown in Figs. 1 and 2, the connecting portion 24 is bent and extends toward the outside in the short-side direction in a space formed immediately below the lower end of the described side wall 13, and the connecting portion 24 Is located at substantially the same height as the lower surface of the bottom wall 11, and is capable of solder connection with the corresponding circuit portion of the circuit board. 2, the distal end (free end) of the connecting portion 24 is located slightly outside the position of the outer side surface of the side wall 13 in the short side direction to the extent that it can be visually confirmed from the outside have.

The outer corner portion 21B is inclined to approach the inner corner portion 21A from the upper end 21B-1 toward the lower end 21B-2, 2, the connecting portion 24 extending outward in the short-side direction is located within a range in which a part of the connecting portion 24 overlaps with the outside corner portion 21B in the short-side direction as shown in Figs. 1 and 2 have. Therefore, compared with the conventional case where the outer corner portion extends straight in the vertical direction parallel to the inner corner portion and the connection portion is led out from the lower end of the outer corner portion in this embodiment, Is located on the inner side in the short-side direction by an amount overlapping with the outer corner portion 21B.

As a result, even if the length of the connecting portion 24 is not changed, the length of the portion of the connecting portion 24 located outside the housing is shortened, so that the connector 1 can be made smaller in the short side direction. Since a part of the lower end 21B-2 of the outside corner portion 21B overlaps with the inside corner portion 21A in the short side direction as described above, , And furthermore, it can be positioned inward in the short side direction, and the length of the portion of the connection portion (24) directed to the outside of the housing (10) can be shortened. Therefore, the connector can be further reduced in the short-side direction. In addition, instead of the present embodiment, all of the portions that are not part of the lower end 21B-2 of the outside corner portion 21B are located so as to overlap with the inside corner portion 21A in the short side direction, 1) can be further downsized in the short-side direction.

The length of the connecting portion 24 itself is not shorter than that of the conventional connecting portion 24 so that the connecting portion 24 is electrically connected to the circuit board in a state where the connecting portion 24 is connected to the circuit board by soldering The conduction is not unstable and the fixing strength of the connector 1 to the circuit board is not lowered.

The fixing bracket 30 is made by bending a piece of metal plate in the thickness direction and is formed at four corners in the plane shape of the connector 1. [ The fixed metal fitting 30 includes a supported portion (not shown) supported by the end wall 14 by integral molding, a fixed portion bent at the lower end of the supported portion and extending outward in the short- 31). The fixing metal fitting 30 contributes to the improvement of the fixing strength of the connector 1 to the circuit board by fixing the fixing portion 31 to the upper surface of the circuit board. The distal end (free end) of the fixing portion 31 is located at the same position as the distal end of the connection portion of the terminal 20 in the short side direction.

[Configuration of Relative Connector]

The state connector 2 shown in Fig. 2 is a connector attached to another circuit board (not shown), and has a frame-like fitting portion suitable for the receiving recess 15 of the connector 1, Are fitted into the accommodating concave portion (15), whereby the connectors are fitted and connected to each other. As shown in Fig. 2, the mating connector 2 includes a housing 40 made of a synthetic resin having a substantially rectangular parallelepiped outer shape and a housing 40 having a substantially rectangular parallelepiped shape formed integrally with the housing 40 in the longitudinal direction of the housing 40 (Hereinafter referred to as " counterpart terminal 50 "

The housing 40 has a bottom wall 41 facing the other circuit board and a peripheral wall rising from the bottom wall 41. The housing 40 is surrounded by the bottom wall 41 and the peripheral wall, Is formed as a receiving recess 45 for receiving the projecting wall portion 12 of the housing 10 of the connector 1 in the connector fitting state. The peripheral wall has two side walls 43 extending in the longitudinal direction so as to face each other, and the side wall 43 supports the mating terminal 50.

The mating terminal 50 is formed by bending a piece of metal plate in the plate thickness direction and forms two rows symmetric in the short side direction (left and right direction in Fig. 2) of the housing 40, And is supported by the housing 40 in a state in which they are arranged in a direction. A U-shaped fitting portion 51 supported on the side wall 43 and a corner portion 51A (hereinafter referred to as " U-shaped fitting portion 51 ") positioned on the accommodating concave portion 45 side of the two corner portions of the fitting portion 51 And a connecting portion 54 connected to the corresponding circuit portion of the other circuit board extending in the short-side direction via the bent transition portion 55 from the "inner corner portion 51A". 2, the mating terminal 50 is supported by the fitting portion 51 and the transition portion 55 by integral mold molding with the housing 40. As shown in Fig.

The fitting portion 51 is buried in the side wall 43 with the side wall 43 extending from below. The fitting portion 51 has an inner plate surface and a side surface of the U-shaped portion supported by the side wall 43. The outer plate surface of the U-shaped portion exposed from the side wall 43 is supported by the side wall 43 As shown in Fig. The dimension of the fitting portion 51 in the short side direction (left and right direction in Fig. 2) of the housing 40 is set so that the contact portion 22A of the terminal 20 of the connector 1 and the locking portion 21A- In the present embodiment.

The portion of the inner corner portion 51A of the fitting portion 51 located at the side of the accommodating concave portion 45 and exposed to the vicinity of the bottom wall 41 (the upper position in Fig. 2) Is formed as a corresponding contact portion 51A-1 which contacts and contacts the contact portion 22A of the terminal 20 of the connector 1 in the fitted state. The plate surface of the other corner portion 51B of the fitting portion 51 (hereinafter referred to as the " outer corner portion 51B ") located away from the accommodating concave portion 45 is located close to the bottom wall 41 (The upper position in Fig. 2) of the terminal 20 is formed and the concave portion functions as a locked portion 51B-1 to be engaged with the locking portion 21A-3 of the terminal 20 do.

2, the contact portion 54 is located at substantially the same height as the lower surface (the upper surface in Fig. 2) of the bottom wall 41, So that solder connection with the corresponding circuit portion of the circuit board is possible.

[Connector Fitting Operation]

Hereinafter, a fitting operation between the connector 1 and the mating connector 2 will be described. The terminals 20 of the connector 1 and the terminals 50 of the fixing bracket 30 and the mating connector 2 are soldered to the corresponding circuit boards respectively. Next, as shown in Fig. 2, the connector 1 is set in a state in which the housing recess 15 is opened upward, and the mating connector 2 is placed in a state in which the housing recess 45 is opened downward And brought to the position above the connector 1 as the posture. Then, as shown by an arrow in Fig. 2, the connector 1 is moved downwardly of the mating connector 2 so that the fitting portion of the mating connector 2 is fitted into the housing recess 45 of the connector 1. [

As a result, the fitting portion 51 of the mating terminal 50 of the mating connector 2 extends between the contact portion 22A of the terminal 20 of the connector 1 and the locking portion 21A-3 Enter. The contact portion 22A is pushed toward the inside of the displacement allowing groove portion 12B so that the elastic shoulder portion 22 is elastically displaced so as to enter the displacement allowance groove portion 12B. When the fitting portion 51 advances, the contact portion 22 comes in contact with the contact portion 51A-1 of the fitting portion 51 and comes in contact with the lock portion 21A -3) engages with the locked portion 51B-1 of the fitting portion 41 in the vertical direction. As a result, the terminals of the connector are electrically connected to each other and are locked with each other, so that the fitting connection between the connectors is completed.

As described above, since the fitting portion 51 of the mating connector 2 extends and extends between the contact portion 22A of the terminal 20 of the connector 1 and the lock portion 21A-3, The inner corner portion 21A of the connector 1 receives a pressing force from the fitting portion 51 toward the outer side in the short side direction of the housing 10 to thereby form the side wall 13 ) Is bent outward with the bottom as a point.

In the present embodiment, the lower end 21B-2 of the outside corner portion 21B is positioned inside the shorter side direction than the upper end 21B-1, that is, near the inside corner portion 21A, 2 is smaller than the lower end 21B-2 of the outer corner 21B-2, the opposite moment generated by the outer corner 21B is less likely to act. Therefore, since the side wall 12 and the inner corner portion 21A are easily bent outward with their lower portions as the fulcrum, the insertion force required for inserting the mating connector 2 at the time of fitting the connector can be reduced.

≪ Second Embodiment >

The present embodiment is different from the first embodiment in that the terminal is supported by the housing by integral mold molding because the terminal is press-fitted into the side wall of the housing from above and is supported by the housing.

Fig. 3 (A) is a perspective view of a connector according to a second embodiment, showing a section at the position of the terminal in the longitudinal direction of the housing, and Fig. 3 (B) Sectional view taken along the housing length direction. The connector 3 according to the present embodiment has a configuration in which the terminal 70 is pressed and supported from above by the side wall 63 of the housing 60. [ 3 (A) and 3 (B), the reference numerals of the respective portions of the terminals 20 of the terminal 20 correspond to those of the terminals 20 of the first embodiment, Are attached.

The housing 60 in this embodiment has a bottom wall 61, a projecting wall portion 62, a side wall 63, a short wall 64 and a receiving recess 65, The shape of the bottom wall 61, the protruding wall portion 62 and the side wall 63 of the present embodiment is the same as that of the housing 10 of the bottom wall 11, the protruding wall portion 12, 13). Here, the shape of the bottom wall 61, the protruding wall portion 62, and the side wall 63 will be mainly described.

The bottom wall 61 has two side walls 63 facing each other in the short direction of the housing 60 (left and right direction in FIG. 3 (B)) as shown in Figs. 4 (A) and 4 (B) And at the position of the terminal 70 in the longitudinal direction of the housing 60, the distance from the center of the housing 60 to the outside in the short side direction as in the first embodiment, They do not penetrate in the vertical direction so as to communicate with each other. 3, both ends of the bottom wall 61 in the short-side direction do not reach the lower side of the side wall 63, and a space formed below the side wall 63 The connecting portion 74 of the terminal 70 is located. On the upper surface of the bottom wall 61 is formed a bottom groove 61A for accommodating the base portion 73 of the terminal 70 to be described later at a position corresponding to the accommodating concave portion 65 in the short- Are formed so as to extend in the short-side direction.

The protruding wall portion 62 has a groove portion which is open toward the accommodation space 65 over the entire upper and lower direction at a position corresponding to the terminal 70 in the longitudinal direction. By forming the groove portions, a joining wall portion 62A is formed which extends across the entire vertical direction at a position corresponding to each other between the mutually adjacent terminals 70, and protrudes toward the accommodation space 65. [ The jamb wall portion 62A has a function of preventing "sinking" of the elastic cuff 72 of the terminal 70 in the short side direction, like the regulation projection 12A of the first embodiment. The protruding wall portion 62 has the above-described grooves extending in the vertical direction at positions corresponding to the terminals 70 in the space between the adjoining chambers 62A, And the elastic displacement portion 72B is formed as a displacement allowing groove portion 62B that allows elastic displacement of the elastic elastic portion 72. [

The side wall 63 is formed with a terminal support groove 63A extending in the vertical direction at a position corresponding to the terminal 70 in the longitudinal direction. As will be described later, the terminal holding groove 63A is formed such that the supported portion 71 of the terminal 70 is press-fitted upward from the inner surfaces of the two grooves opposed to each other in the longitudinal direction to form the supported portion 71 And is supported on the inner surface of the groove. The terminal support groove 63A, the low groove 61A of the bottom wall 61 and the displacement allowance groove 62B of the projecting wall portion 62 communicate with each other to form a U-shaped groove as a whole, And the groove serves as a terminal receiving groove for receiving the terminal 70. [

The terminals 70 are supported by the housing 60 in a state of being arranged in a longitudinal direction of the housing 60 in two rows which are symmetrical with respect to the projecting wall 12. The terminal 70 is formed by bending a piece of metal plate in a substantially transverse S-shape in the plate thickness direction and has an inverted U-shaped portion 71, an elastic shoulder 72, a base portion 73 and a connecting portion 74 The basic structure of the terminal 20 is the same as that of the terminal 20 of the first embodiment. The inverted U-shaped portion 71 of the terminal 70 has an inner corner portion 71A, an outer corner portion 71B and a connecting portion 71C in the same manner as the supported portion 21 of the first embodiment.

As shown in FIG. 3B, the outer angle portion 71B is formed in a range of the side wall 63 of the housing 60 in the short direction of the housing 60 (left and right direction in FIG. 3B) And the lower end 71B-2 is inclined so that the upper end 71B-2 is closer to the lower end 71B-2 than the upper end 71B-1 from the upper end 71B- And is located on the inner side in the short-side direction. Therefore, as in the first embodiment, the connecting portion 74 extending from the lower end 71B-2 of the outer corner portion 71B toward the outside in the short-side direction is formed so that a part of the connecting portion 74 extends in the short- (71B). As a result, the connecting portion 74 is positioned inwardly in the short side direction by an amount overlapping with the outside angle portion 71B, and the connector 3 can be made smaller in the short side direction by that amount.

The lower end 71B-2 of the outside corner portion 71B does not overlap the inside corner portion 71A in the short side direction and the lower end 21B-2 of the outside corner portion 21B is not overlapped with the inside corner portion 71A. Is partially overlapped with the inner corner portion 21A. However, it is needless to say that the lower end 71B-2 of the outside corner portion 71B can be positioned so as to overlap the inside corner portion 71A, thereby further miniaturizing the connector in the short side direction.

As shown in Fig. 3A, the outer corner portion 71B has a press-fitting projection 71B-3 as a supported portion projecting from both end surfaces (both end surfaces in the longitudinal direction of the housing). In this embodiment, the press-fit projection 71B-3 of the outside corner portion 71B-3, which is press-fitted into the terminal support groove 63A from above, fits on the two groove surfaces opposite to each other of the terminal support groove 63A So that the terminal 70 is supported by the housing 60. The inverted U-shaped portion 71, the elastic arm portion 72 and the base portion 73 of the terminal 70 are held by the housing 60 in the state in which the terminal 70 is supported by the housing 60, The displacement supporting groove portion 71B, and the low groove 61A. In this embodiment, the press-fitting projection 71B-3 is formed on both end surfaces of the outside corner 71B. Alternatively, or in addition to the press-fitting projection 71B-3, Fitting protrusions may be formed on both end surfaces of the connecting portion 71A or both end surfaces of the connecting portion 71C.

The lower end 71B-2 of the outer corner portion 71B is located closer to the inner side than the upper end 71B-1 in the shorter side direction, and closer to the inner corner portion 71A, similarly to the first embodiment , The side wall of the housing 60 can easily bend toward the outside of the mating connector (not shown) with the lower portion as a fulcrum at the time of fitting the connector, so that the insertion force of the mating connector can be reduced.

≪ Third Embodiment >

The third embodiment is different from the second embodiment in that the terminal is press-fitted from above in that the terminal is press-fitted into the housing from below. The connector of the present embodiment is the same as the connector of the second embodiment except for the bottom wall and the protruding wall portion of the housing. Hereinafter, with respect to the housing, the same reference numerals as those of the second embodiment denote the same reference numerals as those of the second embodiment, and a description thereof will be omitted, and the description will be focused on the configuration of the bottom wall and the protruding wall portion. Since the terminal of this embodiment is exactly the same as the terminal of the second embodiment, the same reference numerals as those of the second embodiment are given and the description is omitted.

4A is a perspective view of the connector 4 according to the present embodiment and shows a cross section at the position of the terminal 70 in the longitudinal direction of the housing 80. Fig. And FIG. 4B is a plan view of the connector 4 of FIG. 4A viewed from the longitudinal direction of the housing 80. 4A and 4B, the bottom wall 81 of the housing 80 of the connector 4 according to the present embodiment has the terminal 70 in the longitudinal direction of the housing 80, (The left-right direction in Fig. 4 (B)) of the housing 80 at the position corresponding to the position of the protruding wall 82 in the direction of the arrow A in Fig. Therefore, the housing 80 is opened downward except for the central position of the projecting wall portion 82, and the terminal 70 can be press-fitted from below. In the present embodiment, the projecting wall portion 82 has a top wall 82C, a cross section perpendicular to the longitudinal direction has a T-shaped cross section, and an upper portion of the displacement allowable groove portion 82B has an upper wall 82C ).

The inverted U-shaped portion 71 of the terminal 70 is press-fitted and supported by the side wall 83 of the housing 80 so that the lower end of the outer corner portion 71B 2 are positioned close to the lower end 71A-2 of the inner corner portion 71A and a part of the connection portion 74 is located within a range overlapping the outer corner portion 71B in the short side direction. Therefore, the connector 4 can be made smaller in the shorter direction by the overlapping amount. Further, since the side wall is easily bent when the connector is fitted, the insertion force of the mating connector can be reduced.

In the first to third embodiments, terminals are arranged and supported on both sides of two side wall portions opposed to each other. Alternatively, terminals may be arranged only on one side wall portion.

In the first to third embodiments, an example in which the present invention is applied to a receptacle connector has been described. However, the present invention is not limited thereto. For example, the present invention can be applied to the connector 2 It is also possible to apply the same plug connector. In this case, for example, the terminal of the first embodiment to the third embodiment may have a shape such that the elastic hand and the base are omitted from the terminal to the side wall of the housing.

In the first to third embodiments, the outside corner portion of the terminal is inclined so as to approach the inside corner portion as it goes from the top end to the bottom end. Alternatively, the outside corner portion may be formed so as to approach the inside corner It may be bent. For example, the outer corner portion may be bent at an intermediate position in the up-and-down direction so that the lower portion extends obliquely toward the inner corner portion, or the outer corner portion may be bent in the crank shape at the intermediate position so that the lower portion extends straight . That is, the lower end of the outer corner portion may be located further inside than the upper end.

1: Connector
2: Relative connector
3: Connector
4: Connector
10: Housing
13: Side wall
15: receiving recess (receiving space)
20: terminal
21:
21A:
21A-1:
21A-2:
21B:
21B-1: Top
21B-2:
21C: Connection
24: Connection
50: Relative terminal
60: Housing
63: side wall
65: receiving recess (receiving space)
70: terminal
71A:
71A-1:
71A-2:
71B:
71B-1:
71B-2:
71B-3: Press-fitting projection (supported portion)
71C: Connection
74:
80: Housing
83: Side wall
85: receiving recess (receiving space)

Claims (6)

An electrical connector comprising: a housing which is disposed on a circuit board and receives a counterpart connector from above, and which is fit-connected to the counterpart connector, the electrical connector comprising: a housing having two side walls that rise in a vertical direction and extend parallel to a surface of a circuit board, And a plurality of terminals arranged on at least one side wall of the two side walls, wherein the housing is provided with a receiving space for accommodating the mating connector between the inner surfaces of the two side walls opposed to each other And the terminal is supported by the side wall and includes an inner corner portion (leg portion) extending in the vertical direction at a position on the accommodation space side in the direction opposite to the side walls, A connecting portion connecting upper ends of the inner corner portion and the outer corner portion, In from the lower end portion in the opposite direction and extend toward the outer electrical connector for a circuit that has a solder connection portion which is connected to a corresponding circuit on the circuit board substrate,
Wherein the outer corner portion is located within the range of the side wall in the direction opposite to the side wall of the housing and the lower end of the outer corner portion is located inwardly in the opposite direction with respect to the upper end, And the outer conductor is located within a range overlapping with the outer corner. The method according to claim 1,
Wherein at least a part of the lower end of the outer corner portion overlaps with the inner corner portion in the direction opposite to the side wall. The method according to claim 1,
And the outer corner portion is inclined or bent so as to approach the inner corner portion from the upper end toward the lower end. The method according to claim 1,
Wherein the inner corner portion is exposed to the inside of the accommodation space and is positioned to be in contact with the terminal of the mating connector at a position near the top. 5. The method according to any one of claims 1 to 4,
Wherein the terminal is supported by the housing in a manner of being integrally formed with the housing. 5. The method according to any one of claims 1 to 4,
Wherein the terminal is formed on at least one of the inner corner portion, the outer corner portion and the connecting corner portion so that the supported portion is press-fitted and supported from the not-supported portion to the side wall.

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