KR101921116B1 - Electric connector for circuit board - Google Patents

Abstract

[PROBLEMS] To provide an electrical connector for a circuit board capable of preventing solder or a coating agent from adhering to a contact arm portion of a terminal.
The housing 10 has a bottom wall 11 parallel to the mounting surface of the circuit board and a rising wall 12 extending in the connector longitudinal direction and rising in the connector insertion direction from the bottom wall 11 The terminal 20 is formed integrally with the bottom wall 11. The terminal 20 has a groove 12A extending from the side surface of the rising wall 12 in the direction of connector insertion and removal along with the side surface of the rising wall 12, A contact arm portion 22 extending from the one end of the base portion 21 in the groove portion 12A in the connector insertion direction and a contact arm portion 22 extending from the other end of the base portion 21 And the groove portion 12A of the rising wall 12 is formed to extend over the standing range of the rising wall 12 and the bottom wall 11 is connected to the connector And a range corresponding to the contact arm portion 22 in the width direction.

Description

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

The present invention relates to an electrical connector for a circuit board disposed on a mounting surface of a circuit board.

As such an electrical connector for a circuit board, for example, a connector of Patent Document 1 is known. The connector of Patent Document 1 has a housing of a rectangular parallelepiped outer shape and a terminal arranged and held by the housing in the longitudinal direction of the connector (the longitudinal direction of the housing). The housing includes a bottom wall facing the mounting surface of the circuit board, a peripheral wall of a rectangular frame rising upward from the periphery of the bottom wall, and a peripheral wall extending in the connector width direction (a short side direction perpendicular to the long side direction of the housing) And protrudes upward from the bottom wall and extends in the connector longitudinal direction. A rectangular annular space surrounded by the peripheral wall and the projecting wall and opening upward is formed as a receiving portion for receiving the mating connector from above.

The terminal has a base portion extending in the connector width direction along the bottom wall, and a contact arm portion resiliently displaceable in the connector width direction extends upward from the one end of the base portion along the protruding wall. A contact portion for contacting the mating terminal provided on the mating connector is formed on the upper end of the contact arm portion so as to protrude toward the housing portion. The free end of the portion extending from the other end of the base is formed with a connection portion that can be soldered to the mounting surface from the outside of the housing.

A protruding wall of the housing is provided with a groove portion for permitting entry of the displacement portion when the contact arm portion is resiliently displaced from a side surface (a surface perpendicular to the connector width direction) And extends in the vertical direction. The lower end of the groove portion is opened, but the upper end is closed. Further, a gap is formed between the contact arm portion and the opposing inner wall surface (the inner wall surface facing the connector longitudinal direction) of the groove portion, and the groove portion and the accommodation portion communicate with each other through the gap.

The bottom wall is provided with a hole portion penetrating in the vertical direction (thickness direction of the bottom wall) over the range including the contact arm portion and the projecting wall in the connector width direction at the terminal position in the connector longitudinal direction Respectively. The groove portion and the bottom wall of the projection wall are formed by collecting the mold downwardly after the housing and the terminal are integrally formed at the time of manufacturing the connector and communicate with each other.

Japanese Laid-Open Patent Publication No. 2012-160360

In the case of mounting the connector of the patent document 1 on the circuit board, when the terminal connecting portion is soldered to the mounting surface of the circuit board, the molten solder (molten solder) So-called solder blow-up, in which the surface of the contact arm portion of the terminal is climbed via the bottom wall, and so on. If the solder adhering to the surface of the contact arm is hardened, there is a possibility that a sufficient elastic displacement state of the contact arm portion can not be obtained sufficiently. Further, when the molten solder blowing the surface of the contact arm portion reaches the contact surface of the contact portion, that is, the contact surface with the mating terminal, through the gap between the contact arm portion and the opposite inner wall surface of the groove portion of the projecting wall, Which may result in poor contact with the substrate.

A coating agent such as a resin may be applied to the solder connecting portion in order to prevent corrosion of the solder connecting portion between the connecting portion and the mounting surface. The coating agent may also be melted in the same manner as in the case of the solder described above And adhere to the surface of the contact arm portion to cause a problem of elastic displacement of the contact arm portion or poor contact with the mating terminal.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an electric connector for a circuit board which can prevent solder or a coating agent from adhering to a contact arm portion of a terminal.

An electrical connector for a circuit board according to the present invention is an electrical connector for a circuit board having a housing and a terminal held by the housing and disposed on a mounting surface of a circuit board, And a bottom wall which is parallel to the mounting surface and forms a bottom surface of the accommodating portion, and a bottom wall which extends in the direction of connector insertion and which is perpendicular to the connector width direction Wherein the protruding wall is formed with a groove portion which is pierced from a side face (the side in the connector longitudinal direction) orthogonal to the connector width direction and which extends at the same time in the connector insertion direction, Extends in the connector width direction along the bottom wall and is held by the integral molding on the bottom wall A contact arm portion extending from the one end of the base portion and extending from the one end of the base portion so as to be in contact with the mating connector and a connecting portion formed at a portion extending from the other end of the base portion and capable of being soldered to the mount surface, The portion has a gap between the inner side wall surface of the groove portion in the connector width direction and the connector longitudinal direction and is accommodated in the groove portion so as to be elastically displaceable in the connector width direction.

In the electrical connector for a circuit board according to the present invention, the protruding wall of the protruding wall is formed to extend over a standing range of the protruding wall, and the bottom wall is formed in at least a terminal position in the connector longitudinal direction, And the contact arm portion in the contact hole portion.

In the present invention, the groove portion of the projecting wall is formed over the whole standing region of the projecting wall. That is, the groove portion is opened in the connector insertion / extraction direction at the top surface position of the projection wall (the end surface on the opposite side of the bottom wall). Therefore, the protruding wall having the groove portion can be formed by moving the mold from the top surface side of the protruding wall toward the bottom wall side in the connector insertion direction, and arranging the mold. As a result, on the side opposite to the top surface side, the terminal corresponds to the contact arm portion of the terminal accommodated in the groove portion in a range corresponding to the groove portion in the connector width direction at the terminal position in the connector longitudinal direction It is possible to form a bottom wall in the range.

Therefore, according to the present invention, when the connector is soldered, the melted solder is applied between the bottom wall of the housing and the mounting surface toward the contact arm portion side of the terminal, that is, The molten solder does not climb over the surface of the contact arm portion, and adhesion of the solder to the contact arm portion is prevented. As a result, the elastic displacement of the contact arm portion by the solder does not occur. Further, since the solder does not adhere to the contact portion of the contact arm portion, it is possible to prevent the contact failure state at the contact portion. Also, when applying a coating agent such as a resin to the solder connecting portion, adhesion of the coating agent to the contact arm portion is inhibited, as in the case of the above-described solder, and the state of elastic displacement of the contact arm portion, Is satisfactorily secured.

In the present invention, the bottom wall of the housing is formed with a through hole penetrating the bottom wall in a connector insertion direction in a range different from the contact arm portion in the connector width direction, And the bottom surface of the base portion is exposed in the bottom portion and both end surfaces of the base portion are held by the bottom wall.

In the case where the bottom of the housing is formed in the bottom wall of the housing, the bottom of the base is pressed by the mold in a range in which the terminal is formed in the width direction of the connector when the housing and the terminal are integrally formed. The bottom is formed in the bottom wall in the above range by ejecting the mold. In the lower portion of the base, both end faces of the base exposed at the bottom face are held by the bottom wall. That is, there is no gap between both end faces of the base and the bottom wall, and the base is closed by the base. Therefore, even if the melted solder or the coating agent flows into the bottom of the circuit board from the mounting surface side, the solder or the coating agent is prevented from further proceeding by the bottom surface of the base portion, The solder or the coating agent does not climb to the contact arm side of the terminal. As described above, according to the present invention, it is possible to satisfactorily secure the resilient displacement state of the contact arm portion and the contact state with the mating terminal, even if the recess is formed by pressing the terminal with the metal mold.

In the present invention, the base portion of the terminal has a terminal width in the longitudinal direction of the connector larger than that of the bottom portion, and at least one plate surface in the side edge portion of the terminal width is held by the bottom wall good.

As described above, not only the base end portions of the terminals but also the plate surfaces at the side edge portions of the terminal widths are held at the bottom wall, whereby the bottoms are more reliably closed by the base portions. Therefore, it is possible to more reliably prevent the solder or the coating agent from climbing to the contact arm portion side of the terminal through the bottom portion.

In the present invention, a plurality of terminals are arranged in the longitudinal direction of the connector, a terminal located in both end regions of the terminal arrangement range constitutes a power supply terminal, and the other terminal located in the middle region of the terminal arrangement range constitutes a signal terminal And the base of the power terminal is formed so as to cover a plurality of the bottoms in the longitudinal direction of the connector, and the bottom of the signal terminal The base may be formed so as to cover at least one of the bottoms in the longitudinal direction of the connector.

The base portion of the terminal covered with the plurality of bottoms can be pressed by the mold at each position of the plurality of bottoms when the terminal and the housing are integrally formed. Therefore, as compared with the case where the base portion of the terminal is formed so as to cover one bottom, that is, in the case where the base portion of the terminal can press the plate surface by the die at the position of the one bottom portion in the integral molding, The position of pressing the plate surface is increased, so that the pressing area of the plate surface is widened by that much, so that the posture of the terminal at the time of integral molding can be more stabilized.

As described above, in the present invention, the groove portion for accommodating the contact arm portion of the terminal is formed over the entire standing range of the projection wall of the housing, and is opened in the connector insertion direction at the position of the top surface of the projection wall. The protruding wall can be formed by moving the mold from the top surface side of the protruding wall toward the bottom wall side in the connector insertion direction. Therefore, since the bottom wall of the housing can be formed in a range corresponding to the contact arm portion accommodated in the groove portion in the connector width direction, the molten solder or the coating agent can be prevented from flowing into the bottom wall, So that it can be prevented from being attached to the arm portion. As a result, the elastic displacement of the contact arm portion and the contact state with the mating terminal can be satisfactorily secured.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a receptacle connector according to an embodiment of the present invention and a plug connector fitted thereon from above, showing a state before fitting a connector. Fig.
Fig. 2 (A) is a cross-sectional perspective view of the plug connector of Fig. 1 taken along a plane perpendicular to the connector longitudinal direction, and Fig. 2 (B) is a cross-sectional perspective view of the receptacle connector of Fig. (Left half), and the lower half of the right half (the right half), respectively, and the reinforcing brackets Respectively.
Fig. 3 (A) is a perspective view showing the plug connector of Fig. 1 inverted upside down, and Fig. 3 (B) is a perspective view of the plug connector of Fig.
Fig. 4 is a bottom view showing a bottom surface of a part of the receptacle connector of Fig. 1, wherein the receptacle signal terminals and the receptacle reinforcing brackets are shown in broken lines.
Fig. 5 is a cross-sectional view of the receptacle connector and plug connector of Fig. 1 taken along a plane perpendicular to the connector longitudinal direction, showing a cross section at the position of the signal terminal. Fig. 5 (A) B) show the state of connector fitting.
Fig. 6 is a cross-sectional view of the receptacle connector and plug connector of Fig. 1 taken along a plane perpendicular to the connector width direction, and shows a cross section at the center position in the connector width direction. Fig. 6 (B) shows the connector fitting state.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a perspective view of a receptacle connector according to the present embodiment and a plug connector as a mating connector to be engaged with the receptacle connector from above, and shows a state before fitting the connector. Fig. The receptacle connector 1 and the plug connector 2 in the present embodiment are electrical connectors for circuit boards which are respectively disposed on the mounting surfaces of different circuit boards (not shown) (Vertical direction in Fig. 1) in the direction perpendicular to the insertion direction is set as the insertion direction. In this embodiment, the direction in which the plug connector 2 is fitted to the receptacle connector 1, that is, the direction in which the plug connector 2 is moved downward in Fig. 1 is referred to as " connector fitting direction " That is, the upward direction in Fig. 1 will be described as " connector output direction ". The fitting direction and the fitting direction of the receptacle connector 1 as the mating connector with respect to the plug connector 2 are opposite to the "connector fitting direction" and the "connector fitting direction" of the aforementioned plug connector 2 .

 [Configuration of the receptacle connector 1]

1, the receptacle connector 1 includes a housing 10 having an approximately rectangular parallelepipedal outer shape, and a connector 10 extending in a connector longitudinal direction (a direction of a long side of the housing 10) And a plurality of receptacle signal terminals 20 and receptacle reinforcing brackets 30 arranged and held by the housing 10 by integral molding. The receptacle connector 1 is disposed and mounted on a circuit board in a posture shown in Fig.

1, the receptacle signal terminals 20 are provided in two rows symmetrical in the connector width direction in the range of the projecting wall 12 of the housing 10 in the longitudinal direction of the connector have. The receptacle reinforcing metal fittings 30 are provided on the housing 10 at both outer positions with respect to the arrangement range of the receptacle signal terminals 20 in the connector longitudinal direction. As will be described later, the receptacle reinforcing metal fitting 30 has the receptacle power supply terminal 45 as a part of the receptacle reinforcing metal fitting 30. 1, the receptacle power supply terminal 45 is located on both outer sides with respect to the arrangement range of the receptacle signal terminals 20 in both end regions of the projecting wall 12 in the connector longitudinal direction have.

1, the housing 10 is made of an electrically insulating material such as a resin, and has a bottom surface parallel to the mounting surface of a circuit board (not shown) to be mounted, (Not shown) extending in the longitudinal direction of the connector as well as rising upward from the bottom wall 11 in the central region of the bottom wall 11 in the connector width direction, A wall 12 and a peripheral wall 13 of a rectangular frame standing from the bottom wall 11 and surrounding the protruding wall 12. The peripheral wall 13 includes side walls 14 as a pair of outer walls extending from the edge of the bottom wall 11 facing in the connector width direction and extending in the connector longitudinal direction, And an end wall 15 as a pair of outer walls extending in the connector width direction by connecting the ends of the pair of side walls 14 with each other. The rectangular annular space opened upward between the peripheral wall 13 and the projecting wall 12 forms a receiving portion 16 for receiving the fitting portion of the plug connector 2. [

4, the bottom wall 11 is provided at a terminal position in the connector longitudinal direction (the left-right direction in Fig. 4), in a connector insertion / extraction direction (a direction perpendicular to the plane of the drawing (See Fig. 5 (A) and Fig. 5 (B)). The reservoir 11A is formed when integrally molding the housing 10, the receptacle signal terminal 20 and the receptacle reinforcing metal 30, and releasing the mold downward. The bottoms 11A are arranged at regular intervals except for the bottoms 11A located at both ends in the connector longitudinal direction (see Fig. 4). The spacing between the two bottoms 11A located in both end regions in the connector longitudinal direction is slightly smaller than the spacing between the other bottoms 11A (see FIG. 4). In addition, the bottoms 11A located at both ends in the connector longitudinal direction have a slightly smaller dimension in the connector width direction than the other bottoms 11A.

5 (A) and 5 (B) which are sectional views at the position of the receptacle terminal 20, when viewed in the connector longitudinal direction (direction perpendicular to the paper surface) In a range extending from a position slightly outside the side surface of the protruding wall 12 to a position slightly outside the inner surface of the side wall 14 in the connector width direction (left and right directions in Figs. 5A and 5B) Respectively. That is, the pad 11A is formed in a range outside the contact arm portion 22 of the receptacle signal terminal 20, which will be described later, in the connector width direction. The recess 11A formed at the position of the receptacle reinforcing metal fitting 30 in the connector longitudinal direction is likewise formed in a region outside the contact arm portion 44 of the receptacle power supply terminal 45 of the receptacle reinforcing metal fitting 30 As shown in Fig. In other words, the bottom wall 11 is closed in a range corresponding to the contact arm portions 22, 44 in the connector width direction. Hereinafter, the receptacle signal terminal 20 and the receptacle power supply terminal 45 will be collectively referred to as " receptacle terminals 20 and 45 " when there is no particular need to distinguish them.

The bottom wall 11 is formed such that the bottom surface of the bottom wall 11 is located at a position corresponding to the connecting portion 24 of the receptacle signal terminal 20 and the side fixing portion 42 of the receptacle reinforcing metal fitting 30, 24 and the upper surface of the lateral fixing portion 42. [0054] The bottom wall 11 of the bottom wall 11 is located at a position between the connecting portions 24 and between the connecting portion 24 and the side fixing portion 42 so that the bottom surface of the bottom wall 11 is in contact with the upper surface And the upper surface of the side fixing portion 42, and a low groove portion 11B is formed below the bottom surface (see also Fig. 4).

The projecting wall 12 has a signal terminal groove 12A at a position corresponding to the receptacle signal terminal 20 in the connector longitudinal direction and a power terminal groove 12B at a position corresponding to the receptacle power terminal 45 5 (A), 5 (B) and 5 (A), 5 (A) and 5 (B), respectively, while being pierced from the side surface of the projecting wall 12 in the longitudinal direction of the connector 10 B). Hereinafter, the signal terminal groove portion 12A and the power terminal groove portion 12B will be collectively referred to as " terminal groove portions 12A and 12B " when there is no particular need to distinguish them. As can be seen from Figs. 5 (A) and 5 (B), the terminal groove portions 12A and 12B are formed over the entire standing range of the protruding wall 12, And is closed by the bottom wall 11 in the lower end position. The terminal groove portions 12A and 12B accommodate the contact arm portions 22 and 44 of the receptacle terminals 20 and 45, respectively. 1, the signal terminal groove 12A and power terminal groove 12B have the same groove width (dimension in the connector longitudinal direction).

1, the housing 10 is formed such that its end in the connector longitudinal direction is higher than the portion of the arrangement range of the receptacle terminals 20, 30. At the end portion, a lateral guide surface 14A which is inclined inward in the connector width direction as the downward direction is formed is formed on the inner surface (the surface located on the side of the accommodating portion 16) of the side wall 14. [ The lateral guide surface 14A guides the plug connector 2 in the connector width direction toward the inside of the accommodating portion 16 in the process of engaging the connector.

An end guide surface 15A which is inclined inward in the longitudinal direction of the connector is formed on the upper portion of the inner surface of the end wall 15 (the surface located on the side of the accommodating portion 16) . As can be seen from Fig. 1, the upper edge and lower edge of the end guide surface 15A are located at the same height as the upper edge and lower edge of the lateral guide surface 14A. The end guide surface 15A guides the plug connector 2 in the connector longitudinal direction toward the inside of the accommodating portion 16 in the connector fitting process.

Between the lateral guide surface 14A and the end guide surface 15A, there is formed a corner guide surface 10A which is inclined downward inward in the connector width direction and inward in the connector longitudinal direction as it is directed downward. 1, the upper edge and lower edge of the corner guide surface 10A are located at the same height as the upper edge and lower edge of the lateral guide surface 14A and the end guide surface 15A. The corner guide surface 10A guides the plug connector 2 in the connector width direction and the connector length direction in the receiving portion 16 in the connector fitting process.

Fig. 2 (A) is a cross-sectional perspective view in a plane perpendicular to the connector longitudinal direction of the receptacle connector 1 of Fig. 1, Fig. 2 (B) Fig. 2 (A) and 2 (B) show the cross-section of the housing at the center position in the connector longitudinal direction, showing the state where the housing is omitted from the left half, As shown in Fig. In FIG. 2 (A) and FIG. 2 (B), the interval between the terminals and the distance between the terminal and the reinforcing metal are larger than those in FIG. 1 for convenience of explanation.

Hereinafter, the configuration of the receptacle signal terminal 20 will be described based on Figs. 1, 2 (B) and 5 (A). The receptacle signal terminal 20 is formed by bending a band-shaped metal plate piece in the plate thickness direction and includes a base portion 21 extending in the connector width direction along the bottom wall 11 of the housing, A signal contact arm portion 22 extending upward from the end on the side of the wall 12 and an inverted U-shaped portion 22 extending upward from the end of the base 21 on the side of the side wall 14 and then bent downward And a connecting portion 24 extending from the lower end of the compensated holder portion 23 toward the outside in the connector width direction.

5A, the base portion 21 extends over a range including the accommodating portion 16 in the connector width direction, and is held on the bottom wall 11 by integral molding have. The base 21 exposes its top surface toward the inside of the accommodating portion 16 and its bottom surface is exposed toward the circuit board in a range corresponding to the bottom 11A of the bottom wall 11. [ The portion of the base 21 on the side of the protruded wall 12 in the longitudinal direction (connector width direction) is formed as a width-wise portion (widthwise portion), and the portion on the side wall 14 side And the terminal width (dimension in the connector longitudinal direction) is formed as a wide width portion (wide portion).

4, the base 21 is positioned such that the thickened portion corresponds to most of the region of the bottom 11A of the bottom wall 11 in the connector width direction, 11A). The width and width of the base 21 are larger than the width of the bottom 11A of the bottom wall 11 so that both ends of the base 21 and both side edges (Flat surface) of the bottom wall 11 is held by the bottom wall 11. [ Therefore, there is no gap between both side surfaces (side end surfaces extending in the connector width direction) of the base portion 21 and the bottom wall 11, so that the bottom end opening of the bottom portion 11A It is covered and covered by the lower surface. It is not essential that the plate surface of the side edge portion of the base portion 21 be held on the bottom wall 11 in a range corresponding to the reservoir 11A and if at least both end faces of the base portion 21 are held good. Further, when the plate surface of the side end portion of the base portion 21 is held by the bottom wall 11, only the upper surface of the side end portion, or both the lower surface and the upper surface may be held.

The signal contact arm portion 22 is accommodated in the signal terminal groove portion 12A of the protruding wall 12 and is elastically displaceable in the plate thickness direction (connector width direction). The lower portion of the signal contact arm portion 22 is formed to have the same width dimension (the dimension in the connector longitudinal direction) as the base portion 21, and the upper portion is formed to have a smaller width dimension than the lower portion. The signal contact arm portion 22 has a free end side upper end portion curved convexly toward the side wall 14 so as to be in contact with a plug signal terminal 60 of a plug connector 2 And is formed as a contact protruding portion 22A (see Fig. 5 (B)). The signal contact arm portion 22 is located in the receiving portion 16 so that the curved portion of the signal contact protruding portion 22A protrudes from the signal terminal groove portion 12A of the housing 10 in the free state A)).

2, an inner arm portion 23A extending upward from the end of the base 21 on the side of the side wall 14 along the inner surface of the side wall 14, A transition portion 23B continuously bent from the upper end of the inner arm portion 23A toward the lower side in the connector width direction outer position with respect to the corresponding inner arm portion 23A and an extension portion 23B extending downward through the transition portion 23B And is held on the side wall 14 by integral molding.

The inner arm portion 23A has a plate surface exposed toward the inside of the accommodating portion 16 and a lock recessed portion 23A-1 formed in a rectangular shape from the plate surface is formed. The lock recess 23A-1 is formed, for example, by press working, and its width dimension (dimension in the arrangement direction) is smaller than the width dimension of the inner arm portion 23A. The lock recessed portion 23A-1 is engaged with the firing step portion 61A-1 of the plug signal terminal 60 of the plug connector 2 to be described later so that the connector fitting state is maintained, (See FIG. 5 (B)) by making electrical contact with the contact with the tapered step portion 61A-1 at the time of engagement with the tapered step portion 61A-1.

The transition portion 23B is convexly curved upward and the upper surface of the transition portion 23B is exposed from the side wall 14. [ The outer arm portion 23C is buried and held in the side wall 14 without being exposed from the side wall 14 (see also Fig. 5 (A)). 2 (B), the outer arm portion 23C is formed with a lower width portion (a dimension in the arrangement direction) smaller than the other portion.

The connecting portion 24 extends linearly from the lower end of the outer arm portion 23C toward the outer side in the connector width direction to almost the same position as the outer surface of the side wall 14 at a position lower than the base portion 21, Is exposed from the bottom wall (11) of the housing (10). The connecting portion 24 is connected to the corresponding signal circuit portion of the circuit board by soldering.

In the present embodiment, as described above, by making the leading end of the connecting portion 24 in the connector width direction substantially coincident with the outer surface of the side wall 14, the size of the receptacle connector 1 in the connector width direction is avoided have. Further, as already described, at the position between the connecting portions 24, the bottom wall 11 of the housing 10 is provided with the low groove portion 11B. Therefore, at the time of soldering connection, the molten solder flows into the low-trench portion 11B, so that it can be soldered to both end surfaces (side surfaces extending in the connector width direction) of the connection portion 24. [ As described above, in the present embodiment, it is possible to secure a sufficiently large area of the solderable portion of the connection portion 24 while avoiding enlargement of the connector in the connector width direction.

Next, the structure of the receptacle reinforcing metal fitting 30 will be described with reference to Figs. 1 and 2 (B). In the present embodiment, the receptacle reinforcing metal fitting 30 has not only a function of reinforcing the housing 10, but also a function as a lock metal and a function as a power supply terminal as described later. However, it is not essential that the receptacle reinforcing metal fitting 30 has a function as a lock metal and a function as a power supply terminal.

The receptacle reinforcing metal fitting 30 is formed by bending the metal plate member in the plate thickness direction and includes a portion provided at the position of the end wall 15 and a portion provided at the position of the projecting wall 12, A portion provided at each position of the two side walls 14 and a portion provided at the position of the accommodating portion 16. [

The portion provided at the position of the end wall 15 of the receptacle reinforcing metal fitting 30 includes an end wall inner surface reinforcing portion 31 extending along the inner surface of the end wall 15, And an end wall 15 extending downward along the outer surface of the end wall 15 via the end wall top reinforcing portion 32. The end wall 15 is formed with a through- End side inner surface reinforcement portion 31 at a position near both ends of the end wall inner surface reinforcement portion 31 in the connector width direction and an end portion extending from the lower end of the end wall inner surface reinforcement portion 31 toward the outside in the connector longitudinal direction (34).

The bottom wall inner reinforcement portion 31 has a lower half portion extending over the entirety of the end wall 15 in the connector width direction and an upper half portion extending upward from the upper half of the lower half portion in the widthwise middle region of the lower half connector. As shown in Figs. 1 and 2 (B), the plate surface of the end wall inner surface reinforcing portion 31 slightly protrudes from the inner surface of the end wall 15 and is exposed. The end wall top surface reinforcing portion 32 is formed to have the same width dimension (dimension in the connector width direction) as the upper half portion of the end wall inner surface reinforcing portion 31, and is curved convexly upward continuously in the upper half portion , And the upper surface slightly protrudes from the upper surface of the end wall 15. The end wall side compensated portion 33 is formed to have the same width as the end wall top reinforcing portion 32 and extends continuously to the end wall top reinforcing portion 32, Slightly protrudes from the outer surface of the base plate 15. Since the end wall inner surface reinforcement portion 31 and the end wall top surface reinforcement portion 32 cover the inner surface and the upper surface of the end wall 15 in the present embodiment, It is possible to prevent the inner surface and the upper surface of the plug connector 2 from being damaged by interference with the plug connector 2.

1, the end fixing portion 34 is exposed from the bottom wall 11 of the housing 10 and is soldered and fixed to the corresponding power supply circuit portion of the circuit board at the lower surface thereof. The end fixing portion 34 extends substantially in the same position as the outer surface of the end wall 15 in the connector longitudinal direction. By thus positioning the tip end of the end fixing portion 34 substantially at the same position as the outer surface of the end wall 15, the size of the receptacle connector 1 in the longitudinal direction of the connector is avoided.

1, the portion of the receptacle reinforcing metal fitting 30 which is provided at the position of the projecting wall 12 has a cross section as a rising surface of the projecting wall 12 A protruding wall top face reinforcing portion 35 extending downward from the top of the protruding wall cross-sectional reinforcing portion 35 and a protruding wall top face reinforcing portion 36 bent downward from the top of the protruding wall cross- A protruding wall side flared portion 37 extending downward through a portion 36 extending upward from the extending portion 43 to be described later in the power terminal groove portion 12B of the protruding wall 12 And has a power contact arm portion 44.

The protruding wall cross-section reinforcing portion 35 and the protruding wall top surface reinforcing portion 36 are held by the protruding wall 12 and the respective plate surfaces are supported by the end surface of the protruding wall 12 and the upper surface ) And the same level surface. Since the protruding wall end face reinforcing portion 35 and the protruding wall top face reinforcing portion 36 cover the end face and the upper face of the protruded wall 12 in the present embodiment, The cross section and the upper surface can be prevented from being damaged by the interference with the plug connector 2. [

The power contact arm portion 44 is located in the same row as the signal contact arm portion 22 of the receptacle terminal 20 and is elastically displaced in the plate thickness direction (connector width direction) (See Fig. 5 (A)) serving as a corresponding power source contact portion provided in the main body (see Fig. The power contact arm portion 44 has an upper end portion on its free end side curved convexly toward the side wall 14 and a convexly curved portion for contacting the inner side plate portion 73 44A. In the free state of the power contact arm portion 44, the curved portion of the power contact protruding portion 44A protrudes from the power terminal groove portion 12B of the housing 10 and is located in the accommodating portion 16. In the case where the receptacle reinforcing metal fitting 30 is not provided with a function as a power source terminal, the power contact arm portion 44 is omitted.

The portion provided at the position of the side wall 14 of the receptacle reinforcing metal fitting 30 extends from both ends in the connector width direction of the lower half of the end wall inner surface reinforcing portion 31 to extend inward in the connector longitudinal direction along the side wall 14 A transition portion 40 bent downward from the upper edge of the sidewall side flared portion retaining portion 39 to be bent downward along the inner surface of the side wall 14 via the transition portion 40, And a lateral fixing portion 42 extending outward from the lower edge of the side wall side fired portion holder 39 in the connector width direction.

The side wall side compensated portion retaining portion 39 is embedded and held in the side wall 14. As shown in FIG. 1, the upper surface of the transition portion 40 is exposed at the same level as the upper surface of the side wall 14, as shown in FIG. The lock plate portion 41 is held by the side wall 14 in a state in which the plate surface located on the side of the receiving portion 16 is exposed from the inner surface of the side wall 14. From the exposed plate surface, A concave portion 41A is formed. When the function as a lock metal is not provided in the receptacle reinforcing metal fitting 30, the lock plate portion 41 may be omitted.

1, the side fixing portion 42 is exposed from the bottom wall 11 of the housing 10 and is connected and fixed to the corresponding power supply circuit portion of the circuit board on the lower surface thereof by soldering, And has a function as a connection portion for the terminal 45. Fig. The side fixing portion 42 is extended to the substantially same position as the outer surface of the side wall 14 in the connector width direction. In this embodiment, by making the leading end of the side fixing part 42 in the connector width direction substantially coincide with the outer side of the side wall 14, the size of the receptacle connector 1 in the connector width direction is avoided have. A bottom groove 11B is formed in the bottom wall 11 of the housing 10 at a position between the side fixing portions 42 adjacent to each other in the longitudinal direction of the connector and the connecting portion 24 of the receptacle signal terminal 20 And at the time of solder connection, the molten solder flows into the low-trench portion 11B and is solderable to the side end face of the lateral fixing portion 42. [ As a result, as a result, it is possible to secure the area of the portion that can be soldered with the connection portion 24 while avoiding enlargement of the connector in the connector width direction.

The portion of the receptacle reinforcing bracket 30 which is provided at the position of the accommodating portion 16 extends in the connector longitudinal direction along the bottom wall 11 and the end wall inner surface reinforcing portion 31 and the projecting wall cross- (See also Figs. 6 (A) and 6 (B)) for connecting the lower ends of the power contact arm portions 44 and 35 to each other and connecting the lower ends of the power contact arm portions 44 And a leading portion 43 connecting the lower end portions of the lock plate portion 41 to each other. The concave bottom portion 38 and the extended portion 43 are held by the bottom wall 11 in a state in which the upper surface thereof is exposed to the accommodating portion 16. In the case where the function as the power supply terminal is not provided in the receptacle reinforcing metal fitting 30, the extended portion 43 may be omitted.

The extended portion 43 is directed from the lower edge of the lock plate portion toward the side of the projection wall 12 with the same terminal width dimension as the lock plate portion 41. [ It is also possible to provide the protruding wall 12 at the same position as the power supply terminal groove 12B of the protruding wall 12 in the connector longitudinal direction from the edge portion extending in the connector longitudinal direction The power contact arm portion 44 is extended. Hereinafter, the portion comprising the extended portion 43 and the power contact arm portion 44 is referred to as a " power source terminal 45 ". In the present embodiment, an example is described in which the power supply terminal 45 is formed as a part of the receptacle reinforcing metal fitting 30. Alternatively, the power supply terminal may be formed as a member separate from the receptacle reinforcing metal fitting .

The extended portion 43 constitutes the base portion of the power supply terminal 45. The extended portion 43 extends over a range including the accommodating portion 16 in the connector width direction (same as the base portion 21 of the receptacle signal terminal 20 described previously) (the receptacle signal terminal 20, 5 (A) and 5 (B)). 4, the extended portion 43 is formed so as to include a range corresponding to the two bottoms 11A located at both end regions in the connector longitudinal direction, and the extended portion 43 And the lower surface (flat surface) at both side edges (the edge portion extending in the connector width direction) of the lower wall 11 are held by the bottom wall 11. Therefore, there is no gap between both side faces (side end faces extending in the connector width direction) of the extended portion 43 and the bottom wall 11, and the upper end opening of the two bottomed portions 11A, (43).

The receptacle connector 1 having the above-described structure is manufactured in the following manner. First, the receptacle signal terminal 20 and the receptacle reinforcing metal fitting 30 are arranged in the connector longitudinal direction. Next, the receptacle signal terminal 20 and the receptacle reinforcing metal fitting 30 are connected to each other by a mold (referred to as " lower mold ") which is engaged from above and from below by a mold And press down from below. At this time, the upper mold and the lower mold are pressed while holding the upper surface and the lower surface of the base 21 of the receptacle signal terminal 20 and the extended portion 43 of the receptacle reinforcing metal 30, respectively.

However, when a plurality of terminals having the same terminal width are held by a housing by integral molding, conventionally, when terminals are pressed by a mold at the time of integral molding, all the terminals have the same area and are pressed at one place There are many cases. However, when a base portion of a part of the plurality of terminals is wider than a base portion of the other terminal, one portion of the base portion of the part of the terminal is pressed against the pressing surface of the base portion of the other terminal Area), the posture of the part of the terminals becomes unstable at the time of the integral molding of the mold.

The extending portion 43 of the receptacle reinforcing metal fitting 30 is wider than the base portion 21 of the receptacle signal terminal 20 but the extending portion 43 is provided at a plurality of positions In this embodiment, two portions are pressed by the mold, and the pressing area thereof is almost the same as the total area of the two bottoms 11A. Therefore, as compared with the case where the wide extended portion 43 is pressed at one place with the area of one bottom 11A, the number of the pressed portions increases and the pressing area becomes wider. Therefore, The posture of the receptacle reinforcing metal 30 can be more stabilized.

In the present embodiment, the bottom wall 11 is closed in a range other than a plurality (two in this embodiment) of the bottoms 11A in the region corresponding to the extended portion 43, and the extending portion 43 Is held on the bottom wall 11. [0033] Therefore, as compared with the case in which the bottom wall is formed in the region extending over almost the entire region of the extended portion in order to secure the large pressing area and the stability of the terminal at the time of the integral molding, The strength of the housing 10 can be increased.

Next, the resin is injected into the two upper and lower molds, and the receptacle signal terminal 20 and the receptacle reinforcing metal fitting 30 are integrally molded with the housing 10 to be held by the housing 10. In the present embodiment, since the receptacle signal terminal 20 and the receptacle reinforcing metal fitting 30 are pushed by the mold at a plurality of substantially equally spaced positions when viewed from the whole of the connector, the resin is uniformly poured over the entire connector .

After the integral molding, the upper mold and the lower mold are respectively moved upward and downward to be ejected, thereby completing the receptacle connector 1. At this time, as shown in Figs. 5 (A) and 5 (B), the protruding wall 12 in the connector width direction at the terminal position in the connector longitudinal direction, A depression 11A is formed on the bottom wall 11 on the outer side of the terminal groove portions 12A and 12B. A low groove portion 11B is formed at a position between the connecting portions 24 of the receptacle signal terminal 20 and at a position between the side fixing portion 42 and the connecting portion 24 of the receptacle reinforcing metal fitting 30.

In the present embodiment, the terminal groove portions 12A and 12B of the protruding wall 12 are formed over the entire standing range of the protruding wall 12, and the protruding wall 12 is formed at the position of the top surface And is opened upward. Therefore, the projecting wall 12 having the terminal groove portions 12A and 12B can be formed by moving the upper mold from above. 12B accommodated in the corresponding terminal groove portions 12A, 12B in the connector width direction at the terminal positions in the longitudinal direction of the connector, The bottom wall 11 can be formed in a range corresponding to the contact arm portions 22,

When the receptacle connector 1 is mounted on the mounting surface of the circuit board and the connecting portion 24 of the receptacle signal terminal 20 and the side fixing portion 42 of the receptacle reinforcing metal fitting 30 are soldered to the mounting surface, A solder tends to flow between the bottom wall 11 of the housing 10 and the mounting surface toward the contact arm portions 22 and 44 of the receptacle terminals 20 and 45. [ However, in the present embodiment, since the bottom wall 11 is closed in the range corresponding to the contact arm portions 22 and 44, the molten solder does not climb up the surface of the contact arm portion.

All the bottoms 11A are formed by the base 21 of the receptacle signal terminal 20 or the extending portion 43 of the receptacle power supply terminal 45 The upper opening is closed so that even when the molten solder flows into the depressions 11A from the mounting surface side, the solder is further advanced by the bottom surface of the base portion 21 and the extending portion 43 So that it does not climb to the side of the contact arm portions 22 and 44 because it is held in the holding portion 11A.

Further, even when the coating agent is applied to the solder connecting portion after the connector is mounted, the coating agent is prevented from climbing to the contact arm portions 22 and 44 side, similarly to the case of the solder described above. As a result, it is possible to prevent the solder or the coating agent from adhering to the contact arm portions 22 and 44, thereby satisfactorily securing the elastic contact state of the contact arm portions 22 and 44 with the mating terminal.

 [Configuration of plug connector 2]

Next, the configuration of the plug connector 2 will be described based on Figs. 1, 2A, 3, and 5. Fig. 3 (A) is a perspective view of the plug connector 2 shown in Fig. 1, which is inverted upside down. Fig. 3 (B) is a perspective view showing the plug connector 2 of Fig. .

The plug connector 2 has a frame-shaped fitting portion (see FIG. 3A) suitable for the receiving portion 16 of the receptacle connector 1. By fitting the fitting portion into the receiving portion 16, The connectors 1 and 2 are connected to each other. The plug connector 2 is connected to the housing 50 in the longitudinal direction of the connector (in the direction of the long side of the housing 50) parallel to the housing 50 of the substantially rectangular parallelepiped outer shape and the mounting surface of the circuit board 50 having a plurality of plug signal terminals 60 and a plug reinforcement member 70 arranged and held by integral molding.

As shown in Fig. 1, the housing 50 has a bottom surface parallel to the mounting surface of a circuit board (not shown), which is a mounting surface, and extends in the longitudinal direction of the connector And a circumferential wall 53 as an engaging portion rising from the bottom wall 51 downward (upward in Fig. 3 (A)). The peripheral wall 53 includes two side walls 54 extending in the arranging direction so as to face each other and a pair of side walls 54 connecting the end portions of the two side walls 54 to each other in a connector width direction perpendicular to the connector longitudinal direction 50) extending in a direction perpendicular to the longitudinal direction. The space surrounded by the peripheral wall 53 and opened downward in Fig. 1 (upward in Fig. 3 (A)) corresponds to a space 56 (also shown in Fig. 3A) for accommodating the protruding wall 12 of the receptacle connector 1 3 (A)).

The bottom wall 51 is formed with a protrusion 51A that protrudes outward in the connector width direction over the entire area of the side wall 54 in the connector longitudinal direction as seen in Figs. 1 and 3A have. The projecting portion 51A is located in correspondence with the transition portion 23B of the receptacle terminal 20 and the transition portion 40 of the receptacle reinforcing metal fitting 30 (the positional relationship with the transition portion 23B of the receptacle terminal 20) 5 (B)). 3 (A), the upper surface of the projecting portion 51A is connected to the connecting portion 62 of the plug signal terminal 60, which will be described later, and the side fixing portion 74 of the plug reinforcing member 70, As shown in Fig. Even when the molten solder tries to flow inward in the connector width direction at the time of solder mounting of the connecting portion 62 and the side fixing portion 74 by providing the protruding portion 51A having such a shape, (I.e., a plane perpendicular to the width direction). That is, molten solder does not flow into the positions corresponding to the transition portions 23B and 40 in the connector width direction.

Conventionally, the plug connector does not have a housing portion in a range corresponding to the transition portion of the receptacle terminal in the connector width direction, and because the molten solder flows into the above range at the time of solder mounting, There is a possibility that a solder interferes with the transition portion. In the present embodiment, since the molten solder is prevented from flowing into the above range by the projecting portion 51A of the housing 50 as described above, the solder solidified at the time of fitting the connector is prevented from entering the transition portions 23B, 40 from interfering with each other.

The plug signal terminals 60 are provided in two rows symmetrical in the connector width direction within a range near the center of the housing 50 in the connector longitudinal direction. The plug signal terminal 60 is formed by bending a strip-shaped metal plate piece in the plate thickness direction. As shown in FIGS. 2A and 3B, the plug signal terminal 60 is held on the side wall 54 Shaped U-shaped portion 61 which is located on the side of the accommodating portion 56 out of the two arm portions of the U-shaped portion 61 (the inner arm portion 61C described later) (Lower end in Fig. 3 (B)) in Fig. 2 (A) of Fig. 2, and connected to the corresponding signal circuit portion of the circuit board. The plug signal terminal 60 is held in the U-shaped portion 61 by integral molding with the housing 50.

The U-shaped portion 61 is a portion protruding between the signal contact arm portion 22 and the inner arm portion 23A of the receptacle signal terminal 20 of the receptacle connector 1 in the connector fitted state, (Upper side in Fig. 3 (A) and Fig. 3 (B)) and is embedded in the side wall 54. 2 (A), the U-shaped portion 61 includes an outer arm portion 61A extending downward along the outer surface of the side wall 54, and an outer arm portion 61A extending downward along the outer surface of the outer arm portion 61A. A transition portion 61B which is bent upward from an inner side position in the connector width direction from the lower end of the connecting portion 61B and an inner side arm portion 61C which extends upward through the transition portion 61B. The dimension of the U-shaped portion 61 in the connector width direction is set such that the distance between the signal contact protruding portion 22A of the receptacle signal terminal 20 and the plate surface of the inner arm portion 23A facing the signal contact protruding portion 22A Which is slightly larger than the interval.

As shown in Fig. 1, the outer arm portion 61A of the U-shaped portion 61 is exposed from the outer surface of the side wall 54. As shown in Fig. The exposed plate surface is provided with a stepped portion 61A-1 extending in the width direction (connector longitudinal direction) of the outer arm portion 61A and having a stepped shape in which the upper surface of the plate surface is folded. 1 is engaged with the lock recessed portion 23A-1 of the receptacle terminal 20. [0064] As shown in Fig. As shown in Fig. 2A, the transition portion 61B extends in the connector width direction, and the lower surface (the upper surface in Fig. 3A) of the transition portion 61B is exposed from the side wall 54 have. 3A, the plate surface on the side of the housing portion 56 is exposed from the inner surface of the side wall 54, and the exposed surface of the plate portion of the inner arm portion 61C, And is formed as a corresponding signal contact portion which contacts and contacts the signal contact protruding portion 22A of the receptacle signal terminal 20. [

2A, the connecting portion 62 extends straight from the upper end of the inner arm portion 61C toward the outer side in the connector width direction along the bottom surface of the bottom wall 51, 50) (refer to Fig. 1), and can be connected to the corresponding signal circuit portion of the circuit board by soldering.

1, one end of the plug reinforcing metal plug 70 is provided at each end of the housing 10 in the longitudinal direction of the connector corresponding to the receptacle reinforcing metal fitting 30 of the receptacle connector 1 . The plug reinforcing metal fitting 70 not only functions to reinforce the housing 50 but also has a function of locking with the receptacle reinforcing metal fitting 30 and a function of locking the power contact arm portion 44 of the receptacle reinforcing metal fitting 30 And has a function as a power supply terminal to be brought into electrical contact with each other. However, it is not essential that the plug reinforcement member 70 has a function as a lock metal and a function as a power supply terminal.

2 (A), an outer side plate portion 71 extending along the outer surface of the side wall 54 of the housing 50, and an outer side plate portion 71 extending along the outer side surface of the side wall 54 of the housing 50, A lateral transition portion 72 extending from the lower end of the outer plate portion 71 toward the connector width direction and an inner plate portion 73 extending upwardly along the inner surface of the side wall 54 via the lateral transition portion 72 A lateral fixing portion 74 extending from the upper end of the inner plate portion 73 to the outside in the connector width direction, a connecting portion 75 extending in the connector width direction and connecting the two inner plate portions 73, An end transition portion 76 bent upward from an outer side position in the connector longitudinal direction from the lower edge of the connection portion 75 and an end portion connected to the end portion of the end portion of the end wall 55 extending upward along the outer surface of the end wall 55 via the end transition portion 76, (77), an upper surface of the connecting portion From the end portion has a fixing portion (78) extending towards the outside of the connector in the longitudinal direction.

As shown in Fig. 2 (A), the outer side plate portion 71 has a plate surface exposed from the outer surface of the side wall 54, and the exposed plate surface has a stepped shape in which the upper surface of the plate surface is dug A tapered step portion 71A extending in the width direction (connector longitudinal direction) of the outer side plate portion 71 is formed. The tapered step portion 71A is formed at the same height as the tapered step portion 61A-1 of the outer arm portion 61A of the plug signal terminal 60. [ The fulcrum stepped portion 71A is locked with the lock recessed portion 41A of the receptacle reinforcing metal fitting 30 in the state of fitting with the receptacle connector 1. [

The side shifting portion 72 extends in the connector width direction along the lower surface of the side wall 54 (upper surface in FIG. 3A), and the lower surface of the side shifting portion 72 (upper surface in FIG. And exposed from the side wall 54 (see Fig. 3 (A)). 3A, the inner surface of the inner side plate portion 73 is exposed from the inner surface of the side wall 54 and has a contact pressure with the power source contact arm portion 44 of the receptacle reinforcing metal fitting 30 And is formed as a corresponding power source contact portion to be contacted.

The side fixing portion 74 extends outward in the connector width direction from the upper end of the inner side plate portion 73 (lower end in FIGS. 3A and 3B) as seen in FIG. 2A, As shown in Figs. 1 and 2A, is directed to the outside of the housing 50, so that it can be connected to the corresponding circuit portion of the circuit board by soldering.

As shown in FIG. 2A, the connecting portion 75 includes a connecting base portion 75A having a plate surface perpendicular to the connector longitudinal direction and extending in the connector width direction, and a connecting base portion 75A extending from both ends of the connecting base portion 75A And has a connecting end portion 75B which is bent and extends inward in the connector longitudinal direction. The connecting portion 75 is buried and held in the end wall 55.

The end transition portion 76 extends in the connector width direction along the lower surface of the end wall 55 (upper surface in FIG. 3A), and the lower surface of the end transition portion 76 (upper surface in FIG. Is exposed from the end wall 55 (see Fig. 3 (A)). The end flared portion 77 is held by the end wall 55 and the plate face is exposed from the outer surface of the end wall 55 as shown in Figs. 1 and 3A. 1, the end fixing portion 78 protrudes from the bottom wall 51 of the housing 50 in the connector longitudinal direction, and the end fixing portion 78 protrudes from the upper surface (lower surface in FIG. 3A) of the circuit board And is fixed to the corresponding portion by soldering.

 [Connector Fitting Operation]

Next, the fitting operation of the connectors 1 and 2 will be described based on Figs. 1, 5, and 6. Fig. 5 is a cross-sectional view taken along a plane perpendicular to the connector longitudinal direction of the receptacle connector 1 and the plug connector 2 of Fig. 1 and showing a section at the position of the signal terminal, and Fig. 5 (A) FIG. 5B shows a state before the fitting, and FIG. 5B shows a state before the fitting. Fig. 6 is a cross-sectional view of the receptacle connector and plug connector of Fig. 1 taken along a plane perpendicular to the connector width direction, and shows a cross section at a center position in the connector width direction. Fig. 6 (A) 6 (B) shows the connector fitting state.

The connecting portion 24 of the receptacle signal terminal 20 of the receptacle connector 1 and the side fixing portion 42 of the receptacle reinforcing metal fitting 30 are respectively soldered to the corresponding circuit portions of the circuit board, The end fixing portion 34 of the receptacle connector 30 is soldered to a corresponding portion of the circuit board to mount the receptacle connector 1 on the circuit board. The connecting portion 62 of the plug signal terminal 60 of the plug connector 2 and the lateral fixing portion 74 of the plug reinforcing metal fitting 70 are respectively connected to the corresponding circuit portions of the other circuit board by soldering, The end fixing portion 78 of the metal fitting 70 is soldered to a corresponding portion of the other circuit board so that the plug connector 2 is mounted on the other circuit board. A coating agent for preventing corrosion may be applied to each of the solder connecting portions of the receptacle connector 1 and the plug connector 2, if necessary.

Next, as shown in Figs. 1, 5 (A) and 6 (A), the receptacle connector 1 is set in a posture in which the receptacle portion 16 is opened upward, Is positioned above the receptacle connector 1 in a posture in which the receptacle 56 is opened downward. As shown by the arrows in Figs. 1, 5 (A) and 6 (A), the plug connector 2 is moved downward so that the fitting portion of the plug connector 2 is inserted into the receptacle connector 1 Into the portion (16).

As a result, the U-shaped portion 61 of the plug signal terminal 60 of the plug connector 2 is inserted into the signal contact projection portion 22A of the receptacle signal terminal 20 of the receptacle connector 1 and the lock recessed portions 23A- 1). Then, the signal contact arm portion 22 is elastically displaced inward in the connector width direction. 5 (B), the signal contact protruding portion 22A is engaged with the inner arm portion 61 of the U-shaped portion 61 in the connector fitting state, 1 of the outer arm portion 61A of the U-shaped portion 61 come into contact with the contact portion 61C (corresponding signal contact portion) And is positioned so as to be engageable in the connector ejecting direction with respect to the upper edge of the lock recessed portion 23A-1. As a result, the terminals 20 and 60 of the connectors 1 and 2 are electrically connected to each other and locked with each other.

The power contact protruding portion 44A of the receptacle reinforcing metal fitting 30 is connected to the inner plate portion 73 of the plug reinforcing metal fitting 70 corresponding to the power contact arm portion 44 . In the connector fitting state, the tapered stepped portion 71A of the plug reinforcing metal fitting 70 protrudes into the locking recessed portion 41A of the receptacle reinforcing metal fitting 30, And is positioned so as to be engageable in the direction of exit. As a result, the reinforcing brackets 30, 70 are electrically connected to each other and locked together. In this manner, the fitting and connecting operation of the connectors 1 and 2 are completed. In order to release the plug connector 2, the plug connector 2 can be pulled out by lifting the plug connector 2 upward and releasing the locking state between the terminals and between the reinforcing brackets.

The plate surface of the end wall inner surface reinforcing portion 31 of the receptacle reinforcing metal fitting 30 is exposed on the inner surface of the end wall 15 of the housing 10 and the projecting wall 12, the plate surface of the projecting wall cross-section reinforcing portion 35 of the receptacle reinforcing metal fitting 30 is exposed. Therefore, when the fitting portion of the plug connector 2 is displaced from the regular fitting position toward the end wall 15 in the connector longitudinal direction in the connector insertion process, the fitting portion is fitted to the plate surface of the end wall inner surface reinforcing portion 31 It does not contact the inner surface of the end wall 15 directly. When the fitting portion is displaced from the normal fitting position toward the projection wall 12 side in the connector longitudinal direction, the fitting portion abuts against the plate surface of the projection wall cross-section reinforcing portion 35, It is not directly contacted with the end face. As a result, damage to the end wall 15 and the protruding wall 12 can be prevented.

In the present embodiment, the top surface of the end wall 15 of the housing 10 is exposed from the top surface of the end wall top surface reinforcement 32 and the top surface of the top wall 15 of the housing 10 is exposed, And the plate surface of the protrusion wall top surface reinforcing portion 36 is exposed on the top surface. Therefore, even when the fitting portion of the plug connector 2 is displaced from the normal fitting position to the side of the end wall 15 in the connector longitudinal direction and abuts on the top surface side of the end wall 15 in the connector fitting process, The top wall of the end wall 15 of the housing 10 does not come into direct contact with the top wall. Even if the fitting portion of the plug connector 2 is displaced from the normal fitting position to the protruding wall 12 side in the connector longitudinal direction and abuts on the top surface side of the protruding wall 12 in the connector fitting process, The protruding wall top surface reinforcing portion 36 does not contact the top surface of the protruding wall 12 of the housing 10 directly. As a result, damage to the end wall 15 and the protruding wall 12 can be more reliably prevented. It is not essential that the end wall top reinforcing portion 32 and the projecting wall top wall reinforcing portion 36 are provided in the receptacle reinforcing metal fitting 30 and that the end wall top reinforcing portion 32 and the corresponding Only one of the protruding wall top surface reinforcing portions 36 may be provided.

The receptacle reinforcing metal bracket 30 of the present embodiment is held on the end wall 15 at the end wall side compensated fulcrum portion 33 and is supported by the projected wall side fulcrum portion retaining portion 37 to the projecting wall 12 It is possible to more reliably prevent the receptacle reinforcing metal fitting 30 from being displaced from the housing 10 due to the biasing force from the fitting portion of the plug connector 2 in the process of inserting the connector. It is not essential that the end wall side bulb retainer portion 33 and the projecting wall side bulb retainer portion 37 are provided on the receptacle reinforcing bracket 30 and the bulb retainer portion 33 and the projecting wall portion Only one of the wall side flared and retained portions 37 may be provided.

In the present embodiment, the end wall inner surface reinforcing portion 31 and the projecting wall end surface reinforcing portion 35 are integrally formed by being joined together by the connecting bottom portion 38, and the end wall inner surface reinforcing portion 31 and the projecting wall cross- The strength of the receptacle reinforcing bracket 30 itself is improved and the unexpected deformation of the receptacle reinforcing bracket 30 is prevented, The reinforcing member 10 can be strengthened more strongly.

In the present embodiment, the end wall inner surface reinforcement portion 31 and the projecting wall cross-section reinforcement portion 35 of the receptacle reinforcing metal fitting 30 are connected to each other at the connection bottom portion 38, The housing 10 is prevented from being damaged and the strength of the receptacle reinforcing bracket 30 itself is improved. However, the structure of the receptacle reinforcing bracket 30 can be further modified. For example, the receptacle reinforcing metal is provided with a side wall inner surface reinforcement portion extending along the inner surface of the side wall of the housing and being held by the side wall as a peripheral wall inner surface reinforcement portion, And the protruding wall side reinforcing portion as a protruding wall standing surface reinforcing portion extending along the face (side) and held on the protruding wall is provided so that the lower ends of the side wall inner surface reinforcing portion and the protruding wall side reinforcing portion are connected to each other through the connector width May be connected by a concave bottom portion extending in the direction of the arrow. With this configuration, it is possible to prevent the housing from being damaged due to the displacement of the connectors in the connector width direction, and to improve the strength of the receptacle reinforcing metal itself.

In the present embodiment, an example in which the present invention is applied to the receptacle connector 1 having the receptacle signal terminal and the receptacle power supply terminal and both types of terminals has been described. However, the present invention can also be applied to a terminal having only one kind of terminal Do.

In the present embodiment, a case has been described in which the groove portion for accommodating the contact arm portion of the terminal is formed on the projecting wall. However, the present invention is also applicable to the case where the groove portion is formed on the side wall. In this case, the bottom wall at the terminal position in the connector longitudinal direction includes a range corresponding to the groove portion of the side wall.

1: Connector
2: Plug connector
10: Housing
11: bottom wall
11A:
12: protruding wall
12A: a groove for a signal terminal
12B: Groove for power terminal
14: side wall
15:
16:
20: Receptacle signal terminal
21: donation
22: signal contact arm portion
24: Connection
30: Receptacle reinforcement bracket
31: End wall inner reinforcement (outer wall standing surface reinforcement)
32: Reinforcing section at the top of the end wall (Reinforcement section at the top of the outer wall)
33: End wall side compensated holding portion (outer wall side held portion)
35: projecting wall cross-section reinforcing portion (projecting wall standing-plane reinforcing portion)
36: protruding wall top surface reinforcing portion
37: Pitch holding part on the protruding wall side
38:
42: Side fixing portion (connection portion)
44: Power contact arm portion
43: Lecture (donation)
45: Receptacle power terminal

Claims (4)

An electrical connector for a circuit board having a housing and terminals held by the housing, the electrical connector being disposed on a mounting surface of a circuit board,
Wherein the housing includes a receiving portion for receiving the mating connector in a connector inserting direction perpendicular to the mounting surface, a bottom wall formed parallel to the mounting surface and forming a bottom surface of the receiving portion, And a protruding wall extending in a connector longitudinal direction perpendicular to the connector width direction,
The protruding wall is formed with a groove portion which is pierced from the side in the connector longitudinal direction perpendicular to the connector width direction and at the same time extends in the connector insertion direction,
The terminal includes a base portion extending in a connector width direction along the bottom wall and held by the bottom wall by integral molding, a contact arm portion extending from one end of the base portion in a connector insertion direction and contacting with the mating connector, And the contact arm portion has a gap between itself and the inner wall surface of the groove portion in the connector width direction and the connector longitudinal direction and is accommodated in the groove portion An electrical connector for a circuit board which is elastically displaceable in a connector width direction,
The groove portion of the projecting wall is formed over the entire standing region of the projecting wall,
The bottom wall is formed to include at least a terminal position in the connector longitudinal direction and a range corresponding to the contact arm portion in the connector width direction,
The bottom wall of the housing is formed with a through hole penetrating through the bottom wall in the connector insertion direction in a range different from the contact arm portion in the connector width direction,
Wherein a base portion of the terminal is formed to include a range corresponding to the bottom of the connector in the width direction of the connector and the bottom surface of the base portion is exposed in the bottom portion and both end faces of the base portion Wherein the electrical connector is held and supported. delete The method according to claim 1,
Wherein the base portion of the terminal has a terminal width in the longitudinal direction of the connector larger than that of the bottom portion and at least one of the side surfaces of the terminal width of the terminal width is held by the bottom wall, Electrical connector. The method according to claim 1 or 3,
A plurality of terminals are arranged in the longitudinal direction of the connector and terminals located at both end regions of the terminal arrangement range constitute a power supply terminal and the other terminal located in the middle region of the terminal arrangement range constitutes a signal terminal,
Wherein a bottom wall of the housing is formed by arranging a plurality of spacings in the longitudinal direction of the connector,
The base portion of the power supply terminal is formed so as to cover a plurality of the bottoms in the longitudinal direction of the connector,
And the base portion of the signal terminal is formed so as to cover at least one of the bottoms in the longitudinal direction of the connector.

Images