TWI580116B - Socket connector, socket connector with connector for circuit board, and plug connector - Google Patents

Description

Socket connector, socket connector with circuit board and plug connector

The present invention relates to a socket connector and a plug connector which are disposed on a circuit board and are mated to each other in a direction perpendicular to a surface of the circuit board, and the socket connector is disposed on the circuit board via a conductive layer The socket connector of the circuit board attached thereto.

For example, the socket connector and the plug connector described in Patent Document 1 are widely known as electrical connectors for circuit boards of this type. In Patent Document 1, the housing of the receptacle connector has a bottom wall that faces the circuit board, and a protruding wall that rises from the bottom wall and a surrounding wall that surrounds the protruding wall. The peripheral wall has two side walls which are arranged to hold the terminals and extend in the longitudinal direction (terminal arrangement direction), and end portions of the two side walls which are oriented in the connector width direction with respect to the terminal arrangement direction at right angles Two end walls that are connected to each other. The protruding wall extends between the two side walls in the terminal arrangement direction, that is, extends parallel to the side wall. Further, the annular space between the peripheral wall and the projecting wall is formed as a fitting side, that is, a receiving portion for receiving from the upper side, with the fitting portion of the plug connector.

In the socket connector of this type, the socket terminal is arranged and held on the side wall of the casing, viewed from the terminal arrangement direction, and has a base extending in the width direction of the connector along the top surface of the bottom wall in a range corresponding to the housing portion. The elastic wrist portion of the plug connector of the plug connector that can be contacted from one end of the base portion extending upward along the side of the projecting wall is held to extend from the other end of the base portion along the inner side surface, the top surface and the outer side surface of the side wall A supported portion of the inverted U-shaped side wall and a connecting portion that is connected to the circuit board extending far from the lower end of the outer leg portion of the held portion in the connector width direction. The socket terminal accommodates a U-shaped portion formed by the base portion, the elastic arm portion, and the inner leg portion of the held portion, and accommodates the protruding U-shaped portion of the plug terminal, which will be described later.

One of the plug connector housings has a bottom wall opposite to the circuit board and an annular peripheral wall that rises from the bottom wall and forms a receiving portion suitable for the receptacle connector. The peripheral wall of the plug connector has two side walls which are arranged to hold and extend in the longitudinal direction (terminal arrangement direction) and extend in the direction of the terminal arrangement, similarly to the surrounding wall of the socket connector. Two end walls to which the ends of the two side walls in the width direction of the connector are joined to each other.

In the plug connector of this type, the plug terminal is arranged and held on the side wall of the casing, and the plug connector is formed in a posture in which the connector is fitted, that is, when the bottom wall position is in the upward position, from the terminal arrangement direction. The viewing has a concave U-shaped portion (embedded portion) extending in a U shape along the outer surface of the side wall, and a distal end extending from the upper end of the inner leg portion of the concave U-shaped portion toward the connector width direction. Circuit board connection Connection.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-160360

The socket connector and the plug connector which are mounted on the circuit board like the one described in Patent Document 1 are required to be downsized in the width direction of the connector, and are limited in the width dimension of the casing. Moreover, the receptacle terminal and the plug terminal held in the housing are also generally sized to approximate the width dimension of the housing.

The plug connector is inserted or removed from the socket connector, and is inserted and removed in a normal insertion and removal direction of the circuit board with respect to a right angle to be tilted in a posture in which the connector width direction is inclined. The side wall of the plug connector in the tilting posture is strongly abutted against the side wall or the protruding wall of the socket connector in the width direction of the connector, and a large reaction force is received from the side wall or the protruding wall. Therefore, the side wall of the plug connector is formed by a sufficiently large wall thickness dimension (connector width dimension) which is resistant to the above-mentioned reaction force. Therefore, the concave U-shaped portion of the plug terminal held by the side wall of the plug connector is also formed to have a larger wall thickness dimension of the side wall in the connector width direction. As described above, the plug terminal is below the size defined by the size of the housing in the connector width direction. In the relationship of production, the larger the size of the concave U-shaped portion in the width direction of the connector, the smaller the size of the connecting portion for solder connection on the circuit board.

Further, the socket terminal of the socket connector is such that the concave U-shaped portion that accommodates the plug terminal is housed in the U-shaped portion, and the housing U-shaped portion is formed to accommodate the concave U-shaped portion. The accommodation interval of the shape portion, in other words, the distance between the elastic wrist portion in the connector width direction and the inner leg portion is increased. As described above, in the relationship in which the socket terminal is formed under the size defined by the size of the housing in the connector width direction, the larger the size of the U-shaped portion in the connector width direction is, the portion is larger. The smaller the size remaining for the connection portion, the smaller the size of the connection portion itself.

When the size of the connection portion of each of the socket terminal and the plug terminal is small, the mounting area of the circuit board with respect to the corresponding circuit portion cannot be sufficiently ensured, and the fixing strength of the corresponding circuit portion (hereinafter referred to as "connection fixing strength") ) will become inadequate.

On the other hand, if the width of the casing is not increased, and the connection portion of each of the socket terminal and the plug terminal is formed to extend farther in the width direction of the connector, the size of the connector can be reduced. On the other hand, on the other hand, increasing the mounting area of the above-mentioned connecting portion can improve the connection fixing strength. However, the connecting portion is largely extended from the side wall of the casing, and when an external force acts on the extending portion of the connecting portion before the connector is mounted on the circuit board, the extending portion is present. With terminal arrangement direction or up and down direction The direction of the component is easy to bend and deform. The buckling deformation of the connecting portion of this type may cause damage to the connecting portion itself or poor connection to the circuit board.

Further, when the plug connector is in the tilting posture during the insertion and removal of the connector, the U-shaped portion of the socket terminal and the concave U-shaped portion of the plug terminal become abutted in the connector width direction and in the connector width direction. Mutual reaction to each other. Therefore, in the socket terminal and the plug terminal, bending stress due to the reaction force acts on the connection portion on the outer side in the connector width direction from each of the above-described housing U-shaped portion and the concave U-shaped portion. The connecting portion must withstand the bending stress.

However, in Patent Document 1, the connection portion of each of the socket terminal and the plug terminal has a size smaller than that in the width direction of the connector, and is more present only in the U-shaped portion or the concave U-shaped portion. In the vicinity of the bending stress, the bending force is not able to withstand the peeling of the connecting portion from the corresponding circuit portion.

The present invention has been made in view of such circumstances, and an object thereof is to provide a socket connector and a plug connector, and a socket connector with a circuit board, which increase the connection fixing strength of the circuit board and the corresponding circuit portion on the one hand, and the other When the connector under the tilting posture is inserted and removed, the bending stress acting on the connecting portion of the terminal can be sufficiently received by the connecting portion, and the peeling of the connecting portion of the terminal from the circuit board can be prevented. The damage of the connection due to the external force acting directly on the connecting portion is prevented.

According to the present invention, the above problems are solved by the socket connector according to the first aspect of the invention, the socket connector with the circuit board according to the second invention, and the plug connector according to the third aspect of the invention.

<First invention>

A socket connector according to a first aspect of the present invention is a socket connector that is disposed on a circuit board and that is fitted with a plug connector in a direction perpendicular to a surface of the circuit board; and is characterized in that: The body is erected from a bottom wall having a parallel bottom surface with respect to a surface of the circuit board, and has at least two rising walls extending in one of the parallel directions with respect to the surface of the circuit board; and a plurality of The socket terminals are arranged to be held in at least one rising wall; the housing is opposite to the inner side surface of the rising wall in the connector width direction opposite to each other by the rising walls, and the fitting side with the bottom wall The U-shaped inner wall surface formed on the top surface forms an accommodating portion for accommodating the fitting portion formed by the plug connector; and the socket terminal has a U-shaped portion that is disposed along the inside of the accommodating portion The wall surface extends and is formed in a U shape that is open toward the fitting side in the terminal arrangement direction, and the held portion has a fitting from the wrist portion that accommodates any one of the U-shaped portions along the inner side surface of the rising wall. side The end portion extends through the transfer portion and faces toward the substrate side and is held by the rising wall; and the connecting portion extends from the substrate-side end portion of the held portion along the bottom surface of the bottom wall in the connector width direction and is Connected to the corresponding circuit portion of the circuit board.

In the related socket connector, in the present invention, the connection portion of the socket terminal is in the width direction of the connector, and is larger in size than the portion in which the U-shaped portion is accommodated outside the bottom wall of the casing. The size of the U-shaped portion is also large.

In the present invention, the connection portion of the socket terminal is in the connector width direction, and the size of the portion outside the position where the U-shaped portion is accommodated in the range of the bottom wall of the casing is larger than the size of the U-shaped portion. Big. As described above, by increasing the size of the connector in the width direction of the connector, the mounting area of the circuit board and the corresponding circuit portion in the connection portion can be increased, and the connection fixing strength can be improved.

Further, the connection portion of the socket terminal is ensured to have a sufficient size in the width direction of the connector by the portion in the range of the bottom wall of the casing, and it is not necessary to connect the connection portion in order to increase the connection fixing strength. Extending from the housing distally, or extending the size of the extension to a minimum. Therefore, before the connector is mounted on the circuit board, it is difficult to act on the connection portion because of an inadvertent external force, and damage of the connection portion can be prevented.

Further, the connection portion of the socket terminal is increased in advance and the position of the portion outside the U-shaped portion is secured, and the connection portion covers the range from the U-shaped portion to the size portion. Therefore, even when the plug connector is in the inclined posture during the plugging and unplugging of the connector, even if the receiving U-shaped portion of the socket terminal is caused by the force applied from the concave U-shaped portion of the plug terminal in the connector width direction And the bending stress is generated at the connecting portion, and the bending stress is in the above connection The joint portion can be sufficiently received, and peeling of the joint portion from the corresponding circuit portion can be effectively prevented.

In the present invention, it is preferable that the socket terminal is held by the holding portion so as to be close to the U-shaped portion in the connector width direction toward the substrate side, and the connection portion extends from the substrate side end of the held portion. The portion is separated from the U-shaped portion in the connector width direction. When the socket terminal is made into such a shape, the portion to be held does not tilt. As compared with the case of extending toward the substrate side, the size of a portion in the range of the bottom wall of the casing in the joint portion can be increased. As a result, the mounting area of the circuit board in the connection portion and the corresponding circuit portion can be further increased, and the connection fixing strength can be improved.

In the present invention, it is preferable that the casing has an end wall pair that connects end portions of the rising walls at both ends in the width direction of the connector in the terminal arrangement direction, and the above-mentioned rising wall The fitting-side end surface of the pair of at least one of the pair of end wall pairs has a flat surface parallel to the circuit board, and the flat surface is formed to receive the pressing force from the fitting side when the connector is mounted on the circuit board. Being pressed.

When it is necessary to press the connector from the fitting side when attaching the connector to the circuit board, for example, the conductive layer formed by interposing an anisotropic conductive film (ACF) or an anisotropic conductive paste (ACP) or the like is interposed. When the connector is mounted on the circuit board, the pressure-receiving surface having the flat surface parallel to the circuit board as described above is formed in advance, and the pressing member or the like is pressed from the fitting side, so that all the terminals can be The connection portions are equally connected to the corresponding corresponding circuit portions.

In the present invention, it is preferable that the casing forms a pressure-receiving surface on a fitting side end surface of the rising wall that holds the held portion of the socket terminal; and the socket terminal has a part of the socket terminal pressed from the above The exposed portion of the surface is formed such that a plane is formed with the pressed surface; and when the connector is mounted on the circuit board, the exposed portion is heated from the outside, and the heat is transmitted to the connecting portion.

When it is necessary to press the connector from the fitting side and heat the connection portion when the connector is mounted on the circuit board, for example, the connector is mounted to the circuit via a conductive layer formed by ACF or ACP or the like. In the case of the substrate, the exposed portion of the socket can be pressed by a pressing member or the like having a heating function, and the exposed portion of the terminal can be heated at the same time. For the reason that the terminal of the metal member is good in thermal conductivity, the heat applied to the exposed portion is transmitted toward the connection portion, and the connection portion is connected with respect to the corresponding circuit portion.

In the present invention, the exposed portion of the socket terminal is preferably formed with a transfer portion in advance, and is preferably connected to the connection portion via the held portion. Further, in the present invention, it is preferable that the socket terminal has a component that is closer to the fitting side than the end portion of the end portion of the connecting portion that is closer to the fitting portion than the end portion of the connecting portion and that is extended to the rising wall. The extension portion of the surface; the exposed portion of the socket terminal is formed to extend from the fitting side end portion of the extension portion, and is connected to the connection portion via the extension portion.

<Second invention>

A socket connector for a circuit board according to a second invention is a An electrical connector for attaching a circuit board of the first invention to a circuit board on a circuit board via a conductive layer, wherein the receiving U-shaped portion of the socket terminal has a contact wrist portion, and the contact wrist portion is formed a contact portion extending along an inner side surface of a rising wall and contacting the plug terminal; the housing being formed to allow the terminal groove for receiving the contact wrist portion to be immersed into the inner side surface of the rising wall, and a bottom wall having a hole portion communicating with the terminal groove at a position corresponding to the rising wall in a width direction of the connector; a connection portion of the socket terminal and a corresponding circuit portion of the circuit board are electrically connected to the conductive layer The conductive side is electrically connected while the substrate side opening of the hole portion of the casing is closed by the conductive layer.

When a connector is attached to a circuit board, a coating agent is applied to the connection portion. In the present invention, the lower opening of the hole portion of the casing is closed by the conductive layer, and the coating agent does not reach the contact portion contacting the wrist portion through the hole portion. Therefore, it is possible to surely prevent adhesion of the coating agent to the contact portion of the socket terminal, resulting in poor contact with the plug terminal.

<Third invention>

A plug connector according to a third aspect of the invention is a plug connector that is disposed on a circuit board and that is fitted to the receptacle connector in a direction perpendicular to a surface of the circuit board, and is characterized by: The housing is erected from a bottom wall having a parallel bottom surface with respect to a surface of the circuit board, and has at least two rising walls extending in one of the parallel directions with respect to the surface of the circuit board; a plug terminal that is arranged to be held in at least one rising wall; the housing is formed for use in at least one a rising portion of the rising portion facing the receiving portion of the socket connector; the plug terminal having a concave U-shaped portion and extending along both side surfaces and the fitting side end surface of the rising wall as the fitting portion Extending and forming a U-shape having a top portion viewed from the terminal arrangement direction on the fitting side; and the connecting portion being connected to the wrist portion from any of the concave U-shaped portions along both side faces of the rising wall The substrate-side end portion extends along the bottom surface of the bottom wall and extends to a corresponding circuit portion of the circuit board in the connector width direction.

In the related plug connector, in the present invention, the connection portion of the plug terminal is in the connector width direction in the direction opposite to the rising walls, and is more positioned than the concave U-shaped portion in the range of the bottom wall of the casing. The size of the outer portion is larger than the size of the concave U-shaped portion.

In the present invention, the connection portion of the plug terminal is in the connector width direction, and the size of the portion outside the concave U-shaped portion in the range of the bottom wall of the casing is larger than the concave U-shaped portion. The size is still large. Therefore, as in the case of the socket connector of the first invention described above, the mounting area of the circuit board and the corresponding circuit portion can be increased and the connection fixing strength to the circuit board can be increased, and the connector can be mounted. Inadvertent external force is difficult to act on the joint to prevent damage to the joint. Further, in the process of plugging and unplugging the connector, the connection portion from the corresponding circuit portion can be well prevented by the bending stress applied to the connecting portion in the tilting posture of the plug connector being sufficiently received by the connecting portion. Stripped.

In the present invention, it is preferable that the casing has an end wall pair that connects end portions of the rising walls at both ends in the width direction of the connector in the terminal arrangement direction, and the above-mentioned rising wall And the above end The fitting side end surface of at least one of the pair of wall pairs has a flat surface parallel to the circuit board, and the flat surface is formed as a pressed surface that receives the pressing force from the fitting side when the connector is mounted on the circuit board.

When it is necessary to press the connector from the fitting side when attaching the connector to the circuit board, for example, the conductive layer formed by interposing an anisotropic conductive film (ACF) or an anisotropic conductive paste (ACP) or the like is interposed. In the case where the connector is mounted on the circuit board, the method of forming the pressed surface having the flat surface parallel to the circuit board as described above is formed in the same manner as in the case of the socket connector according to the first aspect of the invention. When the pressing member or the like is pressed from the fitting side, the connection portions of all the terminals can be equally connected to the corresponding corresponding circuit portions.

According to the invention, the connection portion of each of the socket terminal and the plug terminal is in the connector width direction, and is located outside the bottom wall of the casing at a position outside the U-shaped portion or the concave U-shaped portion. The size of the portion is larger than the size of the U-shaped portion or the concave U-shaped portion, and the mounting area of the circuit board and the corresponding circuit portion in the connection portion can be sufficiently ensured, and the connection fixing strength can be improved. Moreover, in order to increase the fixing strength of the connection, it may be unnecessary to extend the connecting portion away from the housing, or to keep the size of the extension to a minimum, and the external force that is inadvertent to the connecting portion is difficult to act. Prevent damage to the joint. Further, even in the case where the plug connector is plugged and unplugged in an inclined posture, via the pair of socket terminals and the plug end The bending stress generated by the connection portion of each of the sub-portions is sufficiently received by the connection portion, and peeling of the connection portion from the corresponding circuit portion can be favorably prevented.

1, 101, 201, 301, 401‧‧‧ socket connectors

2, 402‧‧‧ plug connector

10, 110, 210, 310, 410‧‧‧ shell

11, 111, 211, 311, 411‧‧‧ bottom wall

11A‧‧‧ Hole Department

12, 112, 212, 312, 412‧‧ ‧ protruding wall (standing wall)

12A‧‧‧Regular protrusions

12D, 112D, 212D, 312D, 412D‧‧‧

13, 113, 213, 313, 413 ‧ ‧ side wall (standing wall)

13D, 113D, 213D, 313D, 413D‧‧‧

14, 114, 214, 314, 414‧‧‧ end wall

14B, 114B, 214B, 314B‧‧‧

15, 115, 215, 315, 415‧‧ ‧ accommodating department

20, 120, 220, 320, 420‧‧‧ socket terminals

21, 121, 221, 321, 421‧‧‧ accommodating U-shaped parts

21B, 121B, 221B, 321B‧‧‧ contact wrist

21B-1, 121B-1, 221B-1, 321B-1‧‧‧ contact

21C, 121C, 221C, 321C‧‧‧ Locking wrist

22, 122, 222, 322, 422‧‧ ‧ transfer department

23, 123, 223, 323, 423‧‧‧ Keeped Department

24, 124, 224, 324, 424‧‧ Connections

40, 440‧‧‧ shell

41, 441‧‧‧ bottom wall

43, 443‧‧‧ side wall (standing wall)

44, 444‧‧‧ end wall

44B, 444B‧‧‧ pressed face

50, 450‧‧‧ plug terminals

51, 451‧‧‧ recessed U-shaped part

51A, 451A‧‧‧ inside wrist

51B, 451B‧‧‧ outside wrist

54, 454‧‧‧ Connections

225‧‧‧Extension

226‧‧‧Exposed Department

421B‧‧‧Inside contact wrist

421C‧‧‧Outside contact wrist

442‧‧‧Break

443D‧‧‧ pressed face

FIG. 1 is a perspective view showing a state before the fitting connection of the connector assembly according to the first embodiment of the present invention.

2 is a cross-sectional perspective view of a surface at a right angle with respect to a terminal arrangement direction of the connector assembly of FIG. 1, and shows a cross section in a position of a terminal in a terminal arrangement direction.

FIG. 3 is a perspective view showing the socket connector and the plug connector of the connector assembly of FIG. 1 in a posture in which the housing portions of the two connectors are opened upward.

Fig. 4 is a perspective view showing the socket connector and the plug connector of Fig. 3 in a vertically inverted posture.

Fig. 5 is a cross-sectional perspective view showing a state in which the receptacle connector of Fig. 2 is mounted on a circuit board via a conductive layer.

Fig. 6 is a cross-sectional view showing a connector fitting state of the connector assembly of Fig. 2;

Fig. 7 is a cross-sectional perspective view showing a direction at which the terminal arrangement direction of the receptacle connector according to the second embodiment is at right angles; (A) is an embodiment; (B) is a modification; (C) is another In the modified example, the cross section in the position of the terminal in the terminal arrangement direction is shown.

FIG. 8 is a cross-sectional perspective view showing a state before the fitting and connecting of the connector assembly of the connector assembly according to the third embodiment, and showing a cross section in the position of the terminal in the terminal arrangement direction.

Fig. 9 shows a socket connector and a plug connector of the connector assembly of Fig. 8 in a posture in which the opening of the accommodating portion of the two connectors faces upward.

Fig. 10 is a cross-sectional view showing a state in which a connector of the connector assembly of Fig. 8 is fitted.

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

<First embodiment>

Fig. 1 is a perspective view showing a state before fitting and connecting the connector assembly of the embodiment. Fig. 2 is a cross-sectional perspective view showing a direction in which a terminal arrangement direction of the connector assembly of Fig. 1 is at a right angle, and shows a cross section in a position of a terminal in a terminal arrangement direction. Fig. 3 is a perspective view showing the socket connector and the plug connector of the connector assembly of Fig. 1 in a posture in which the accommodating portions of the two connectors are opened upward. Fig. 4 is a perspective view showing the socket connector and the plug connector of Fig. 3 in a vertically inverted posture.

The connector assembly according to the present embodiment shown in FIGS. 1 to 4 has a socket connector 1 disposed on a circuit board (the circuit board P1 shown in FIGS. 5 and 6), and is provided with On another circuit basis In the board (the circuit board P2 shown in FIG. 6), the direction in which the surface of the other circuit board is at right angles is used as a connector insertion/removal direction, and the plug connector 2 is fitted to the socket connector 1.

In the present embodiment, as seen in FIGS. 1 and 2, the receptacle connector 1 and the plug connector 2 (hereinafter, collectively referred to as "connectors 1, 2" as necessary). For example, a conductive layer formed by using an anisotropic conductive film (ACF) or an anisotropic conductive paste (ACP) or the like is attached to a circuit substrate. Specifically, when the connector 1 and 2 are mounted on the circuit board, the conductive layer is placed on the circuit board as described later, and then the surface on the fitting side of each case (the top surface of FIG. 3) The pressed surface to be formed receives the pressing force from the pressing member (not shown) having a heating function toward the circuit board side. Further, the connectors 1 and 2 are also subjected to heat from the pressing member when the terminals 20 and 50 are exposed to the surface on the fitting side of the casings 10 and 40 while receiving the pressing force. As a result, the heat is transmitted to the connection portions 24 and 52 of the terminals 20 and 50, and the connection portions 24 and 52 are electrically connected to the corresponding circuit portion of the circuit board via the conductive layer via heating under the pressing force.

In the present invention, it is not necessary to heat the member via the pressing member. For example, the connector is irradiated with ultraviolet rays (UV) in a state where the connector is subjected to the pressing force from the pressing member, even if the connector is attached to the conductive layer via the conductive layer. The present invention can be applied to the form of a circuit board. In this type, the pressing force applied from the pressing member to the connector is preferably a force for preventing the inadvertent movement of the connector, compared with the type of the connector mounted while heating the connector. Smaller and can be satisfied. And, in this In the invention, it is not necessary for the connector to be attached to the circuit substrate by the pressing member through the conductive layer. For example, the connector does not have to be subjected to pressurization by the pressing member, even if it is directly mounted to the circuit substrate by solder connection. The present invention is applicable to the present invention.

Further, in the embodiment described below, a description is made of a type in which a so-called bent terminal in which a metal plate member is bent in a plate thickness direction is held in a casing via integral molding, but the form of the terminal is not limited to bending. The terminal, for example, may be a terminal made by holding a flat surface of the metal plate member and punching the metal plate member. Further, the holding pattern of the terminal is not limited to integral molding, and may be, for example, a holder for pressing the terminal toward the casing.

[Composition of socket connector]

First, the configuration of the socket connector 1 will be described. The socket connector 1 has a casing 10 made of an electrically insulating material having a substantially rectangular parallelepiped shape, and a plurality of metal socket terminals that are arranged to hold the casing 10 by integral molding in the longitudinal direction of the casing 10. 20; and, in the longitudinal direction of the casing 10, that is, the terminal arrangement direction, the fixing metal fitting 30 of the casing 10 is integrally molded by the integral molding at the outer position of the terminal 20 with respect to the arrangement range of the terminal 20.

As seen in Fig. 1, the casing 10 has a bottom wall 11 extending in a longitudinal direction with respect to a terminal arrangement direction having a bottom surface parallel to a surface of a circuit board (not shown) which is a mounting target surface (see Figure 4); as an extension in the direction of the terminal arrangement and also from the bottom wall 11 upwards That is, the protruding wall 12 of the rising wall that stands up on the fitting side; and the surrounding wall of the protruding wall 12 rises from the bottom wall 11. The peripheral wall has two side walls 13 as rising walls that face each other and extend in the terminal arrangement direction, and the ends of the two side walls 13 are connected to each other and extend at right angles with respect to the terminal arrangement direction. The two end walls 14 of the connector width direction (the narrow direction of the housing 10). An accommodation space 15 for accommodating the fitting portion of the plug connector 2 is formed in a space surrounded by the four corners which is open between the peripheral wall and the projecting wall 12.

The projecting wall 12 has a regulation protrusion 12A at a position corresponding to the socket terminals 20 adjacent to each other in the terminal arrangement direction. The regulation projection 12A projects from the side surface of the projecting wall 12 facing the inner side of the side wall 13 in the connector width direction and extends in the vertical direction. The regulation projection 12A is in such a manner that the protruding portion at the end in the width direction of the connector abuts on the fitting portion of the plug connector 2 in the connector width direction in the connector fitting process and the connector fitting state. The position of the plug connector 2 in the width direction of the connector is regulated. As a result, it is possible to prevent the contact arm portion 21B, which will be described later, from being excessively pressed by the plug terminal 50, thereby damaging the contact arm portion 21B, that is, preventing the so-called "permanent strain".

The protruding wall 12 is recessed in the connector width direction at a position side between the regulating projections 12A adjacent to each other in the terminal arrangement direction, and the displacement permitting groove portion 12B is formed to allow elastic displacement of the contact arm portion 21B of the socket terminal 20 to be described later. . The displacement permitting groove portion 12B is formed on both side faces of the projecting wall 12 as shown in detail in FIG. 2, and the displacement of the two side faces allows the groove portion 12B, in the upper portion of the projecting wall 12, the partition wall portion 12C extending downward from the upper end is partitioned in the connector width direction to form a groove portion extending in the vertical direction, and in the lower portion, the displacement of both sides is allowed. The groove portions 12B communicate with each other in the connector width direction, and as a whole, a slit-shaped terminal groove is formed. The top surface of the projecting wall 12 is formed with a flat upper portion flat surface which is formed as a pressed surface 12D which receives a pressing force from the pressing member when the socket connector 1 is attached to the circuit board.

As shown in FIG. 2, the bottom wall 11 has a hole portion 11A which is formed in a window shape in the vertical direction at a position corresponding to the protruding wall 12 in the connector width direction at a position corresponding to the socket terminal 20 in the terminal arrangement direction (see also 4), the hole portion 11A communicates with the external space and the displacement permitting groove portion 12B. Further, the bottom wall 11 is at a position of the socket terminal 20 and the fixing metal fitting 30 in the terminal arrangement direction, and is for accommodating the connection portion 24, which will be described later, of the socket terminal 20, and the shallow groove portion of the fixing portion 34, which will be described later, of the fixing metal fitting 30. 11B is formed to open downward (circuit board side) and extends in a range covering the side wall 13 in the connector width direction. The depth dimension (the vertical dimension) of the shallow groove portion 11B is formed to have the same size as the thickness of the connecting portion 24 or a small size. Further, as shown in FIG. 2 or FIG. 4, the deep groove portion 11C deeper than the shallow groove portion 11B at both sides of each shallow groove portion 11B in the terminal arrangement direction is connected to the shallow groove portion 11B while being The connector width direction extends over the range of the side walls 13. The deep groove portion 11C is formed to allow the inflow of the coating agent at the time of attachment of the connector as will be described later. Further, the deep groove portion 11C is formed at a position between the deep groove portions 11C adjacent to each other in the terminal arrangement direction. The partition walls 11D of each other.

The side wall 13, as seen in detail in Fig. 2, is formed by a connector width dimension (wall thickness dimension) corresponding to most of the connection portion 24 of the receptacle terminal 20 in the connector width direction. On the top surface of the side wall 13, in the middle of the connector width direction (wall thickness direction), the immersed portion 13A which covers the terminal arrangement range and is immersed is formed. Further, the top surface of the side wall 13 is formed in a groove portion 13B which covers the entire width direction of the connector and is immersed in the outer side of the terminal arrangement range.

Further, the side wall 13 is formed in the upper portion of the portion extending in the connector width direction from the inner side of the immersion portion 13A (the portion is positioned above the bottom surface of the immersion portion 13A), and is formed as a convex upward. Curved portion 13C. The top surface of the side wall 13 is formed with a flat upper surface of the side wall except for the immersed portion 13A, the groove portion 13B, and the convex curved portion 13C. The upper flat surface of the side wall is formed as a pressure receiving surface 13D to be described later. In the present embodiment, the ridge line portion of the pressed surface 13D and the convex curved portion 13C is at the same height as the pressed surface 12D of the protruding wall 12, and both of them are subjected to pressing when the socket connector 1 is attached to the circuit board. The pressure on the components.

On the top surface of the end wall 14, a groove portion 14A that covers the entire direction in which the terminal is arranged is formed at a central position in the width direction of the connector, and an upper flat surface of the end wall is formed in the field other than the groove portion 14A. The flat upper surface of the end wall is positioned at the same height as the pressure receiving surface 12D of the protruding wall 12, and is formed as a pressure receiving surface 14B for receiving a pressing force from the pressing member when the socket connector 1 is attached to the circuit board. That is, the wall 12 The pressed surface 12D, the pressed surface 13D of the side wall 13, the ridge portion of the convex curved portion 13C of the side wall 13, and the pressed surface 14B of the end wall 14 are at the same height, and are equally received from the pressing member at the time of connector mounting. The pressure is pressed and pressed at the same time. In the present embodiment, the pressed surface is formed by the projecting wall 12, the pair of side walls 13, and the pair of end walls 14, and it is not necessary to form all of the pressed faces, and the pair of side walls 13 or a pair of end walls 14 are provided. If you form a pressed surface, you can withstand equal pressure.

The socket terminal 20 is formed by bending a strip of metal strip in the thickness direction, and is formed symmetrically with respect to the protruding wall 12, and is held in the casing 10 in a state of being arranged in two rows. As seen in FIG. 2, the socket terminal 20 has a U-shaped portion 21 that extends in a U-shape along an inner wall surface of the housing portion 15 formed between the protruding wall 12 and the side wall 13 of the housing 10, and from the U The upper end (the end on the fitting side) of the locking arm portion 21C, which will be described later, in the shape-shaped portion 21, the transfer portion 22 that extends far in the connector width direction, and the held portion 23 that extends from the transfer portion 22 toward the lower portion And a connecting portion 24 extending from the lower end of the held portion 23 along the bottom surface of the bottom wall 11 toward the distal end of the connector width direction.

The U-shaped portion 21 is formed along the side surface of the protruding wall 12 of the casing 10, the inner side surface of the side wall 13 opposite to the side surface, and the top surface of the bottom wall 11 to form a U-shape in the terminal arrangement direction. The inner wall surface of the accommodating portion 15 is provided. The U-shaped portion 21 is housed, and has a base portion 21A extending along the top surface of the bottom wall 11 and a contact extending upward from the side surface of the projecting wall 12 from one end of the base portion 21A on the projecting wall 12 side in the connector width direction. The wrist 21B and the other end from the base 21A are along the side The inner side of the wall 13 has a locking arm portion 21C that extends upward.

The contact arm portion 21B is elastically displaceable in the plate thickness direction (connector width direction), and in the free state, the space between the regulation projections 12A of the projecting wall 12 and the displacement permitting groove portion 12B of the projecting wall 12 outer. The contact arm portion 21B is convexly bent toward the side wall 13 as the upper end side portion on the free end side thereof, and forms a plug terminal 50 as a plug connector 2 to be described later and a contact portion 21B-1 for contact. The curved top portion of the contact portion 21B-1 protrudes in the connector width direction from the protruding top portion of the regulation projection 12A of the casing 10.

The locking arm portion 21C is exposed toward the inside of the accommodating portion 15, and a projection-like locking portion 21C-1 that protrudes into the accommodating portion 15 is formed so as to face the contact portion 21B-1 at a position at the upper end thereof. The lock portion 21C-1 is formed, for example, by press working or the like, and has a width dimension (a dimension in the terminal arrangement direction) that is smaller than a width dimension of the lock arm portion 21C (see FIG. 1). The latching portion 21C-1 holds the connector fitting state and prevents the connector from coming off via the latched portion 51B-1 of the plug terminal 50 of the plug connector 2 to be described later, and the connector is prevented from coming off. The contact portion 21B-1 is in contact with and electrically connected to the locked portion 51B-1, and the task of assisting the contact portion 21B-1 is also exhibited.

The transfer portion 22 is convexly curved upward along the convex curved portion 13C of the side wall 13 as seen in detail in FIG. 2, and is exposed from the top surface of the convex curved portion 13C. The top surface of the transfer portion 22 is combined with the top surface of the convex curved portion 13C to form a convex curved surface, and the ridge portion of the transfer portion 22 is subjected to the pressing force from the pressing member at the time of connector mounting, and from the pressing member The heat that should be transmitted toward the connecting portion 24 is withstood.

The above-mentioned "formation of a convex curved surface" is not limited to the case where the transfer portion 22 and the convex curved portion 13C have the same height (level) and form a smooth curved surface, and both of them are included. The height is somewhat different and the uneven surface is formed. In this way, even if the heights of the two are different to some extent, when the pressing member is heated by the pressing member, the elastic member or the like can be interposed between the pressing member and the connector, thereby reducing the use of the unevenness. The presence of a surface creates the effect of pressing or heating.

The held portion 23 is placed at the position of the accommodating portion 15 in the width direction of the connector, and is not buried from the side wall 13 and is buried and held by the side wall 13. As seen in Fig. 2, the held portion 23 is extended so as to be inclined downward toward the inside in the connector width direction. The held portion 23 extends all the way to the bottom surface of the bottom wall 11, in other words, lower than the base portion 21A that houses the U-shaped portion 21, and the lower portion of the held portion 23 is based on the locking arm portion 21C of the U-shaped portion 21. The repeat range position is in the connector width direction (see also Figure 6).

The connection portion 24 is located outside the housing U-shaped portion 21 in the connector width direction, and is located farther from the lower end of the held portion 23 along the bottom surface of the bottom portion 11 toward the connector width direction in the shallow groove portion 11B of the bottom wall 11. It extends straight and extends out of the housing 10 to some extent. The connecting portion 24 covers the entire width direction of the connector and exposes the lower surface (see also FIG. 4), and the conductive layer can be connected to the corresponding circuit portion of the circuit substrate. As seen in detail in Figure 2, the connector 24 is attached to the connector width. The direction, the size of the portion in the range of the bottom wall 11 is larger than the size (outer size) in which the U-shaped portion 21 is accommodated. Further, in the present embodiment, the extended portion of the casing 10 from the connecting portion 24 extends straight in the distal direction of the connector width direction. Alternatively, for example, the extended portion may be bent upward at a right angle. In this way, by the buckling of the extended portion of the connecting portion 24, when the socket connector 1 receives the pressing force from the pressing member at the time of connector mounting, the edge portion of the end portion of the extended portion can be prevented from being damaged to the circuit. Substrate or conductive layer.

The fixing metal fitting 30 is formed in exactly the same shape as the socket terminal 20, and is disposed at four corners in the planar shape of the receptacle connector 1. The fixing metal fitting 30 has a holding portion (not shown) that is embedded and held by the side wall 13 via integral molding, and a fixing portion 34 that is bent at a lower end of the held portion and extends distally in the connector width direction. . The fixing portion 34 is formed to extend along the bottom wall 11 in the shallow groove portion 11B outside the terminal arrangement range at both end positions in the terminal arrangement direction, and is fixedly connected to the corresponding portion of the circuit board via the conductive layer.

[Composition of plug connector]

Next, the configuration of the plug connector 2 will be described. The plug connector 2 shown in FIGS. 1 to 4 is a connector mounted to another circuit board (the circuit board P2 shown in FIG. 6), and has a frame shape suitable for the housing portion 15 of the receptacle connector 1. The fitting portion (see FIG. 3) is fitted into the housing portion 15 via the fitting portion, and the connectors 1 and 2 are fitted to each other. Pick up. The plug connector 2 has a housing 40 having an electrical insulation system having a substantially rectangular parallelepiped shape, and a plurality of metal plug terminals held in the longitudinal direction of the housing 40 via an integral molding arrangement and held by the housing 40. 50.

The housing 40, as seen in FIG. 3, has a bottom wall 41 having a bottom surface parallel to the surface of the other circuit substrate (indicated in FIGS. 1, 2, and 4 as an upper wall), and as a bottom wall 41 The surrounding wall of the fitting portion, the bottom wall 41 and the space surrounded by the surrounding wall and opening on the fitting side (below the top of FIG. 1, 2, 4, above FIG. 3) are connected In the fitted state, the protruding wall 12 of the casing 10 of the receptacle connector 1 is formed as a housing accommodating portion 45 (see Figs. 2 and 3). Further, the peripheral wall functions as a fitting portion that is fitted into the accommodating portion 15 of the receptacle connector 1 in a state in which the connector is fitted. As seen in Fig. 3, the peripheral wall has two side walls 43 as rising walls that face each other and extend in the direction in which the terminals are arranged, and the ends of the two side walls 43 are connected to each other and extended in relation to The terminal is arranged in the direction of the right end of the connector in the width direction of the connector (the narrow direction of the housing 40).

As seen from Fig. 2, the bottom surface of the bottom wall 41 is in the both end regions in the width direction of the connector, and covers the terminal arrangement range. Only the thickness of the connection portion 54 of the plug terminal 50, which will be described later, is immersed. The plug terminals 50 adjacent to each other form a recess 41A with each other. The recessed portion 41A allows the inflow of the coating agent at the time of attachment of the connector as will be described later. Further, the bottom wall 41, as seen in detail in Fig. 3, is formed to extend far from the side of the bottom wall 41 toward the width of the connector at a position corresponding to each of the plug terminals 50. The cover portion 41B of the top surface of the connecting portion 54 to be described later of the plug terminal 50 is covered and covered. The covering portion 41B covers the top surface of the root side portion in the portion extending from the casing 40 of each connecting portion 54.

The side wall 43, as detailed in FIG. 3, covers the entire terminal arrangement direction, and the upper portion (the lower portion in FIGS. 1, 2, and 4) is formed as a convex curved portion 43C that faces upward (below in FIGS. 1, 2, and 4). . Further, as seen in detail in Fig. 3, on the top surface of the end wall 44 (the lower surface in Figs. 1, 2, and 4), a parallel upper end flat surface, that is, a pressed surface 44B, is formed with respect to the circuit substrate. In the present embodiment, the ridge line portion and the pressure receiving surface 44B of the convex curved portion 43C are at the same height, and both of them are pressed by the pressing member when the plug connector 2 is attached to the circuit board. Further, a flat pressure-receiving surface may be formed on the top surface of the both side walls 43, so that when the pressure-receiving surface is formed on the side wall 43, the pressure-receiving surface 44B or the convex-curved portion 43C of the end wall 44 may be omitted.

The plug terminal 50 is formed by bending a strip-shaped strip of metal strip in the thickness direction, and is held in a state in which the width direction of the connector is symmetrical and arranged in the longitudinal direction of the casing 40. The housing 40. The plug terminal 50, as seen in Fig. 2, has a U-shaped concave portion 51 that is held in a U-shape of the side wall 43, and is located in the two wrist portions of the concave U-shaped portion 51. The upper end (at the lower end of FIG. 3) of one of the arm portions (the inner side arm portion 51A to be described later) on the side of the accommodating portion 45 extends far in the connector width direction and is connected to the connecting portion 54 of the corresponding circuit portion of the circuit board. As seen in Fig. 2, the plug terminal 50 is recessed in the U-shaped portion 51, and is integrally molded with the housing 40. maintain.

The recessed U-shaped portion 51 is recessed into the portion of the receptacle terminal 20 of the receptacle connector 1 that houses the U-shaped portion 21 in the connector fitting state (see FIG. 6), as seen in FIG. The side wall 43 (above in FIG. 3) is spanned from below and embedded in the side wall 43. The concave U-shaped portion 51 is formed by connecting the lower end portions (upper end portions in FIG. 3) of the inner arm portion 51A and the outer arm portion 51B extending in the vertical direction to the joint portion 51C.

The concave U-shaped portion 51 is held by the side wall 43 on the inner side surface and the side edge thereof, and the outer side surface of the inner side arm portion 51A, the outer side arm portion 51B, and the joint portion 51C exposed from the side wall 43 The position is formed on the inner side surface (the surface on the side of the accommodating portion 45) of the side wall 43, the outer side surface (the surface on the side separated from the accommodating portion 45), and the lower surface (the top surface in FIG. 3). . The size of the concave U-shaped portion 51 in the connector width direction is somewhat larger than the interval between the contact portion 21B-1 of the receptacle terminal 20 and the latch portion 21C-1 (see Fig. 6).

The inner arm portion 51A recessed in the U-shaped portion 51 is in a position where the position of the bottom wall 41 of the plate surface exposed from the inner side surface of the side wall 43 (the upper side position in FIG. 2) is in the connector fitting state. Next, a corresponding contact portion 51A-1 which is brought into contact with the contact portion 21B-1 of the socket terminal 20 of the receptacle connector 1 by crimping is formed. Further, the outer arm portion 51B recessed in the U-shaped portion 51 is formed such that the plate surface exposed from the outer side surface of the side wall 43 is recessed in a portion (the upper position in FIG. 2) of the bottom wall 41, and a concave portion is formed. The recess is locked as the latching portion 21C-1 of the receptacle terminal 20 It is functional by the latching unit 51B-1.

Further, as seen in detail in Fig. 3, the top surface of the joint portion 51C is formed as a convex curved surface which is exposed from the top surface of the convex curved portion 43C and which is combined with the top surface to have the same level. In the connection portion 51C, when the connector is attached, the ridge line portion which is the top portion of the connection portion 51C receives the pressing force from the pressing member, and the heat to be transmitted to the connection portion 54 is received from the pressing member.

In the socket connector 1, as in the case of the above-described "formation of one convex curved surface", not only the transfer portion 22 and the convex curved portion 13C have the same height (level) but also a smooth one. In the case of the convex curved surface, the case where the height of the both is different to some extent and the uneven surface is formed.

The connecting portion 54, as seen in FIG. 2, extends straight along the bottom surface of the bottom wall 41 toward the connector width direction and extends outwardly of the housing 40. The connecting portion 54 covers the entire width direction of the connecting portion 54 and the exposed top surface (the lower surface in FIG. 3) can be connected to the corresponding circuit portion of the circuit substrate. Further, as shown in detail in Fig. 6, the connecting portion 54 is in the connector width direction, and the size of the portion outside the concave U-shaped portion 51 in the range of the bottom wall 41 is smaller than the concave U-shaped portion. The size (outer size) of the 51 is also large.

[Installing the connector to the circuit board]

Next, the description will be given to attaching the socket connector 1 and the plug connector 2 to the circuit board. Socket connector 1 and plug connector 2 are all separated by a guide The electric layer is placed on the circuit board, heated by a pressing member (not shown) having a heating function, and is mounted on the circuit board via the conductive layer so as to be pressed toward the circuit board side. Hereinafter, the mounting method of the socket connector 1 will be described with reference to Fig. 5. The mounting method of the plug connector 2 will be described with respect to the socket connector 1, and the description of the common points will be omitted.

When the socket connector 1 is mounted, first, as seen in FIG. 5, a conductive layer L formed of, for example, ACF is disposed on the mounting surface of the circuit board P1, and a socket connector 1 is further disposed on the conductive layer L. . At this time, the lower opening of the hole portion 11A formed in the bottom wall 11 of the casing 10 is closed by the conductive layer L. Next, as seen in FIG. 5, in the field of the outer surface of the side wall 13 of the casing 10 in the connector width direction, a resin coating coated in the terminal arrangement direction covering the entire length of the casing 10 and being melted and having fluidity is applied. Cloth C. The coating agent C is a portion that seals the connection portion 24 of the socket terminal 20, the fixing portion 34 of the fixing metal fitting 30, and a portion that extends out of the housing 10 in the inverted conductive layer L while facing the deep groove portion 11C of the housing 10 ( Referring to Fig. 2) inflow, the deep groove portion 11C is filled. Thereafter, the coating agent C is cured.

In the present embodiment, as described above, the lower opening of the hole portion 11A of the casing 10 is closed by the conductive layer L, and the fluidity of the coating agent C does not rise to the contact end of the socket terminal 20 through the hole portion 11A. Contact portion 21B-1 of portion 21B. Therefore, it is possible to surely prevent the contact failure with the plug terminal 50 due to the adhesion of the coating agent C to the contact portion 21B-1.

The following effects were obtained by curing the coating agent C. First, the connection portion 24 via the socket terminal 20 and the fixing portion 34 of the fixing metal fitting 30 are sealed by a coating agent, and corrosion of the connection portion 24 and the fixing portion 34 due to migration can be prevented. Further, since the portion extending from the casing 10 of the connecting portion 24 and the fixing portion 34 is suppressed from above via the coating agent C, it is possible to prevent the above-described extension when the socket connector 1 receives the pressing force from the pressing member from above. The outward partial buckling deformation floats upward from the conductive layer L. As a result, the extended portion can be surely connected to the corresponding portion of the circuit board via the conductive layer.

Moreover, as seen in FIG. 5, the coating agent C directly contacts the top surface of the conductive layer L and the top surface of the circuit board P1 in the areas other than the connection portion 24 and the fixing portion 34, so that the socket connector 1 itself can be made relative to the socket connector 1 itself. The conductive layer L and the circuit board P1 are firmly fixed. Further, in the present embodiment, the contact area with the conductive layer L is increased in the deep groove portion 11C of the casing 10, and the socket connector 1 can be more reliably fixed.

Next, the pressing surface 13D (flat upper surface of the side wall), the pressed surface 14B (flat upper surface of the end wall), and the convex portion of the casing 10 of the receptacle connector 1 are pressed from the upper side of FIG. 5 by a pressing member (not shown). The ridge portion of the curved portion 13C and the ridge portion of the transfer portion 22 of the receptacle terminal 20. At the same time, the ridge portion of the transfer portion 22 of the socket terminal 20 is heated by the pressing member. When the ridge portion of the transfer portion 22 receives heat from the pressing member, heat is transmitted to the connecting portion 24 through the held portion 23. As a result, the connecting portion 24 is in a heated state, interposed between the conductive layers L. The corresponding circuit portion of the circuit board P1 is pressed, connected to the corresponding circuit portion, and electrically connected. Further, the fixing metal fitting 30 receives heat from the pressing member via the casing 10, and is connected and fixed to the corresponding portion of the circuit board via the conductive layer L while the fixing portion 34 is heated.

The mounting method of the plug connector 2 is also disposed on the other circuit substrate (the circuit board P2 of FIG. 6) via the conductive layer in the same manner as the mounting method of the socket connector 1 described above, and the coating agent is applied. After C, it is attached to the circuit board so as to be pressed toward the other circuit board while being heated by the pressing member. At this time, the pressing surface 44B (the upper end flat surface of the end wall), the ridge portion of the convex curved portion 43C, and the ridge portion of the connecting portion 51C of the plug terminal 50 of the casing 40 are pressed by the pressing member, and the connecting portion 51C is pressed by the pressing portion 44C. The ridge portion receives heat from the pressing member. Further, the coating agent C flows into the concave portion 41A (see FIG. 2) of the casing 40, and the concave portion 41A is filled.

In the present embodiment, the connection portion 24 of the socket terminal 20 is formed larger than the housing U-shaped portion 21 in the connector width direction, and the connection portion 54 of the plug terminal 50 is formed to be smaller than the concave U-shaped portion 51. Further, the mounting area of the corresponding circuit portion of the circuit board in the connecting portions 24, 54 can be increased, and the connection fixing strength can be improved.

Further, the connecting portions 24 and 54 are sufficiently dimensioned in the width direction of the connector by the portions located within the range of the bottom walls 11 and 41 of the casings 10 and 40, respectively, and in order to improve the connection fixing strength, The dimensions of the connecting portions 24, 54 extending from the housing 10 can be kept to a minimum. Therefore, inadvertent external force before mounting the connector on the circuit board It is difficult to apply the portion extending from the casing 10 in the connecting portions 24, 54 to prevent damage of the connecting portions 24, 54. Further, it is not necessary to extend the connecting portions 24 and 54 to the outside of the casing. For example, by accommodating the entire length of the connecting portions 24 and 54 in the range of the casings 10 and 40, the connecting portion 24 may not be used. 54 extends outwardly of the housings 10,40. Thereby, it is difficult for the external force to act on the connecting portions 24 and 54, and the damage of the connecting portions 24 and 54 can be surely prevented.

Further, in the present embodiment, as described above, the held portion 23 of the socket terminal 20 is inclined inward in the connector width direction, and can be enlarged as compared with the case where the held portion is not inclined and extends downward. The size of the portion in the range of the bottom wall 11 in the connecting portion 24. As a result, the mounting area of the circuit board in the connection portion 24 and the corresponding circuit portion can be further increased, and the connection fixing strength can be improved.

[Mixed action of connector]

Next, the fitting operation of the connectors 1 and 2 will be described. First, the connectors 1, 2 are mounted to the respective circuit substrates in the manner described above. Next, as seen from FIG. 1 and FIG. 2, the socket connector 1 is placed in a posture in which the accommodating portion 15 is opened upward, and the plug connector 2 is placed in a posture in which the accommodating portion 45 is opened downward, and is caused to face the socket connector 1. position. Next, as shown by the arrows in FIGS. 1 and 2, the plug connector 2 is moved downward, and the fitting portion of the plug connector 2 is fitted into the housing portion 15 of the receptacle connector 1.

As a result, as shown in FIG. 6, the plug of the plug connector 2 The concave U-shaped portion 51 of the terminal 50 is formed such that the contact portion 21B-1 and the closed portion 21C-1 formed by the U-shaped portion 21 of the receptacle terminal 20 of the receptacle connector 1 are expanded and recessed. Then, the contact portion 21B-1 is elastically displaced so that the contact arm portion 21B enters the displacement permitting groove portion 12B so as to be pressed toward the displacement permitting groove portion 12B. Further, when the recessed U-shaped portion 51 is recessed, the contact portion 21B-1 is brought into contact with the corresponding contact portion 51A-1 of the concave U-shaped portion 51 by the crimping, and the latch portion 21C-1 is The vertical direction is locked to the to-be-locked portion 51B-1 of the concave U-shaped portion 51. As a result, the terminals of the connector are electrically connected to each other and are locked to each other, and the fitting and connection of the connectors are completed.

In the present embodiment, the connection portions 24 and 54 of the terminals 20 and 50 are increased in size and secured in the connector width direction in the connector width direction, and the connection portion 24 is located outside the U-shaped portion 21, 51. There are 54 ranges from the U-shaped portion 21, 51 to only the above-mentioned size parts. Therefore, even if, for example, the plug connector is inserted and removed while being shackled, the terminal 20, 50 is caused by the tilting posture in the connector width direction (the horizontal direction in FIG. 6) during the connector insertion and removal process. The U-shaped portions 21 and 51 are mutually subjected to a reaction force in the connector width direction, and a bending stress is generated in the connecting portions 24 and 54. The bending stress can be sufficiently received by the connecting portions 24 and 54 and can be effectively prevented. Peeling from the connection portion of the corresponding circuit portion.

Further, in the present embodiment, as seen in detail in Fig. 6, in the connector fitting state, the side wall 13 of the receptacle connector 1 is close to and opposite to the lower surface of the circuit board P2 on which the plug connector 2 is mounted. side The wall 13 is formed at a height like the pressed surface 13D. Therefore, when the plug connector 2 is in the tilting posture in the connector width direction, the lower surface of the circuit board P2 abuts against the corner portion of the side wall 13 of the receptacle connector 1, the circuit board P2 in turn regulates the further tilting of the plug connector 2. As a result, the plug connector 2 is largely inclined, and the outer arm portion 51B of the plug terminal 50 does not strongly abut against the lock portion 21C-1 of the socket terminal in the connector width direction, and the lock portion 21C can be surely prevented. 1 damage.

<Second Embodiment>

In the first embodiment, the socket terminal 20 of the receptacle connector 1 receives heat from the pressing member in contact with the pressing member by the ridge portion of the transfer portion 22, but in the present embodiment, the receptacle terminal 120 is formed at the receptacle terminal 120. The flat surface is heated in contact with the pressing member, which is different from the first embodiment. Since the plug connector that is fitted and connected to the receptacle connector 101 of the present embodiment has the same configuration as that of the plug connector 2 of the first embodiment, the description thereof is omitted. Hereinafter, the socket connector 101 of the present embodiment will be described focusing on features different from those of the first embodiment.

Fig. 7(A) is a cross-sectional perspective view showing a surface at right angles to the terminal arrangement direction of the receptacle connector 101 according to the second embodiment, showing a cross section in the position of the receptacle terminal 120 in the terminal arrangement direction. In FIG. 7(A), the portion corresponding to the first embodiment is denoted by adding "100" to the component symbol of the component symbol in the first embodiment. Show.

The casing 110 of the receptacle connector 101 shown in Fig. 7(A) is formed in a stepped shape by two flat faces (planes perpendicular to the vertical direction) which are different in height from each other. Specifically, the top surface of the side wall 113 is formed such that the convex curved portion 13C is omitted from the side wall 13 of the casing 10 of the first embodiment, and the flat top surface of the inner half in the connector width direction is larger than the outer half portion. The flat top is still low. In the present embodiment, the top surface of the outer half of the top surface of the side wall 113 is formed as a pressed surface 113D for receiving the pressing force from the pressing member when the connector is mounted.

The socket terminal 120 has a transfer portion 122 that accommodates the U-shaped portion 121 and extends from the upper end of the lock arm portion 121C that accommodates the U-shaped portion 121 toward the distal end in the connector width direction, and follows the transfer portion 122. The end portion (the end portion located at the outer side in the connector width direction) faces downward and extends inwardly in the connector width direction, and the connection portion extending from the lower end of the held portion 123 toward the connector width direction Department 124.

The U-shaped portion 121 is housed in the same shape as the U-shaped portion 21 of the socket terminal 20 of the first embodiment. The transfer portion 122 extends in a crank shape along the top surface of the side wall 113 and is located above the inner half in the connector width direction. The transfer portion 122 forms an exposed portion exposed from the top surface of the side wall 113, and the top surface of the transfer portion 122 is combined with the top surface of the side wall 113 to form a surface. In the present embodiment, the top surface of the outer half of the transfer portion 122 is combined with the pressed surface 113D of the side wall 113 to form a plane of the same level, when the connector is mounted. While receiving the pressing force from the pressing member (not shown), the top surface of the outer half of the transfer portion 122 comes into contact with the pressing heating surface of the pressing member and is heated.

The above-mentioned "forming a plane" is not only in the case where the top surface of the outer half of the transfer portion 122 and the pressed surface 113D of the side wall 113 have exactly the same height (level) and form a smooth plane. Also, the case where the height of the two is different to some extent and the uneven surface is formed. As described above, even if the heights of the two are different to some extent, similarly to the content described in the first embodiment, when the pressing is performed by the pressing member, the pressing member is interposed between the pressing member and the elastic member. The manner between the connectors can reduce the influence of pressing or heating generated by the presence of the above-mentioned uneven surface. This is also the same as the patterns of FIGS. 7(B) and (C) which will be described later.

As seen in FIG. 7(A), the held portion 123 is greatly inclined from the held portion 23 of the first embodiment, and is not exposed from the outside of the casing 110 and is buried in the side wall 113. The connecting portion 124 extends further outward than the housing U-shaped portion 121 in the connector width direction, extends straight along the bottom surface of the bottom wall 111, and extends out to the outside of the housing 110 to some extent. In the present embodiment, the connecting portion 124 is formed to have a larger size than the housing U-shaped portion 121 in the portion of the bottom wall 111 in the connector width direction than the portion in which the U-shaped portion 121 is accommodated. Thereby, the effects described in the first embodiment are obtained.

Moreover, the fixing metal fitting 130 is formed in the same shape as the socket terminal 120 already described, as seen in Fig. 7(A), and the socket end The flat top surface of the portion corresponding to the outer half of the transfer portion 122 of the sub-120 is exposed from the top surface (the pressed surface 113D) of the housing 110, and the pressing member is contacted on the top surface (exposed surface). The heating surface is pressed to receive heat.

As described above, in the present embodiment, the socket terminal 120 and the fixing metal fitting 130 can be brought into contact with each other with respect to the flat heating plate surface of the pressing member, and the pressing heating can be increased as compared with the first embodiment. The contact area of the surface can be effectively heated.

Fig. 7(B) is a view showing a modification of the embodiment, and a portion corresponding to each portion of Fig. 7(A) shows a component symbol with "100" added to Fig. 7(A). Component symbol. In the form of FIG. 7(A), the exposed portion that can be in surface contact with the pressing heating surface is formed on the transfer portion 122 of the socket terminal 120, but instead, as shown in FIG. 7(B), it may be formed at the socket terminal 220. Free end side section. The housing 210 of the receptacle connector 201 shown in Fig. 7(B) has the same shape as the housing 110 of the receptacle connector 101 of Fig. 7(A), and the description thereof will be omitted.

The socket terminal 220 of the receptacle connector 201 of FIG. 7(B) is formed by adding the extension portion 225 and the exposure portion 226 which will be described later to the receptacle terminal 20 in the first embodiment. Specifically, as seen in FIG. 7(B), the extension portion 225 extends so as to face upward from the outer end portion of the connection portion 224 (the end portion positioned at the outer side in the connector width direction) and inward in the connector width direction. Tilting from the upper end exposed portion 226 of the extension portion 225 toward the connector width direction, along the top surface of the side wall 213 The half portion (the pressed surface 213D) extends in a straight shape. The extension portion 225 is not exposed from the casing 210 and is integrally embedded in the casing 210. The top surface of the exposed portion 226 is exposed from the pressed surface 213D of the side wall 213, and the top surface (exposed surface) is heated in contact with the pressing heating surface of the pressing member. The heat received from the pressing heating surface of the pressing member on the exposed surface is transmitted to the connecting portion 124 through the extension portion 225.

Further, the fixing metal fitting 230 is formed in the same shape as the socket terminal 220, and similarly to the socket terminal 220, the surface exposed from the top surface of the casing 210 receives heat from the pressing member.

Thus, also in the form of FIG. 7(B), the socket terminal 220 and the fixing metal fitting 230 are in contact with the pressing heating surface of the pressing member with a flat plate surface, and the pattern of FIG. 7(A). Similarly, the contact area with the above-described pressing heating surface can be increased, and the heat can be surely heated.

Fig. 7(C) is a view showing another modification of the embodiment, and a portion corresponding to each portion of Fig. 7(B) is attached with "100" to Fig. 7(B). The component symbol of the component symbol. In the form of FIG. 7(B), the inner half of the side wall 213 of the housing 210 and the upper end of the transfer portion 222 of the receptacle terminal 220 are respectively higher than the pressed surface 213D of the side wall 213 and the exposed portion 226 of the receptacle terminal 220. The position is lower. On the other hand, in the receptacle connector 301 of FIG. 7(C), similarly to the receptacle connector 1 of the first embodiment, the inner half of the side wall 313 of the housing 310 is provided with the pressed surface 313D of the side wall 313. The feature of the convex portion 313C of the same height, and the transfer portion 322 of the socket terminal 320 are curved along the convex portion The extension of the portion 313C is different from the configuration of the receptacle connector 201 of Fig. 7(B).

According to the receptacle connector 301 of FIG. 7(C), the convex portion 313C of the side wall 313 and the ridge portion of the transfer portion 322 of the receptacle terminal 320 can also receive the pressing force from the pressing member while also being the ridge line of the transfer portion 322. The portion can be heated from the pressing heating surface.

The inner half of the side wall of the casing and the transfer portion of the socket terminal of the casing of FIG. 7(C) are respectively formed into the same height as the outer half of the casing and the exposed surface of the socket terminal, and can also be applied to the drawings. The socket connector 101 shown in 7(A).

Further, the fixing metal fitting 330 is formed in the same shape as the socket terminal 320, and similarly to the socket terminal 320, the surface exposed from the top surface of the casing 310, that is, the transfer portion 332 and the exposed portion 336 are subjected to pressing. The pressure of the components and the heat.

<Third embodiment>

In the first embodiment, the transfer portion 22, the held portion 23, and the connecting portion 24 of the receptacle terminal 20 are the latching wrist portions 21C that are positioned outward in the connector width direction from the two wrist portions that accommodate the U-shaped portion 21. The upper end begins to extend. On the other hand, in the present embodiment, the transfer portion, the held portion, and the connecting portion of the socket terminal are extended from the upper ends of the inner contact portions of the two wrist portions that accommodate the U-shaped portion in the connector width direction. It is mainly at this point that it is different from the first embodiment. Hereinafter, with the present embodiment, according to FIG. 8 to FIG. 10, the features different from the first embodiment are different. Describe the center.

FIG. 8 is a cross-sectional perspective view showing a state before the fitting of the connector assembly of the connector assembly according to the third embodiment, and showing a cross section in the position of the terminal in the terminal arrangement direction. Fig. 9 is a view showing the socket connector and the plug connector of the connector assembly of Fig. 8 in a posture in which the opening of the accommodating portion of the two connectors faces upward. Fig. 10 is a cross-sectional view showing a state in which the connector of the connector assembly of Fig. 8 is fitted. 8 to 10, the portions corresponding to the first embodiment are denoted by the "400" to the component symbols of the first embodiment.

[Composition of socket connector]

The socket connector 401 according to the present embodiment has a housing 410 and a plurality of socket terminals 420 arranged in the housing 410, but does not have a fixing metal fitting as in the socket connector 1 of the first embodiment. .

As shown in FIG. 8, the bottom wall 411 of the casing 410 does not form a hole portion or a groove portion corresponding to the hole portion 11A or the deep groove portion 11C of the first embodiment, and the bottom surface of the bottom wall 411 is provided in addition to the socket described later. The entire portion of the connection portion 424 of the terminal 420 is a flat surface as a whole.

As shown in FIG. 8, the protruding wall 412 of the casing 410 does not form a groove portion corresponding to the displacement permitting groove portion 12B of the first embodiment, and the inner side contact arm portion 421B of the socket terminal 420 to be described later is held by integral molding. The transfer unit 422 and the held unit 423. The flat upper surface of the protruding wall 412 is formed as a pressed surface that receives a pressing force from a pressing member (not shown) when a connector is attached to a circuit board (not shown). 412D.

As seen in FIG. 8, each of the side walls 413 has an inner side wall 413-1 and an outer side wall 413-2 extending in parallel with each other in the terminal arrangement direction, and an inner side wall 413-1 and an outer side wall extending in the connector width direction. The terminal of the 413-2 is arranged in the connection wall 413-3 between the end portions in the direction. The space that is opened on the upper side (fit side) by the inner side wall 413-1, the outer side wall 413-2, and the two connecting walls 413-3 is formed to receive the plug connection in the connector fitting state. The side wall recess 413-4 of the inner side wall 443-1 of the vessel 402 (see also FIG. 10).

The outer side wall 413-2 is as shown in FIG. 8, and the outer half portion 413-2B positioned at the outer side in the width direction of the connector is lower than the inner half portion 413-2A, and the top surface of the outer side wall 413-2 is stepped. . A flat surface formed by the inner side wall 413-1, the inner half 413-2A of the outer side wall 413-2, and the top surface of each of the connecting walls 413-3 is located at the same position as the pressed surface 412D of the protruding wall 412. The height is made into the pressed surface 413D.

The end wall 414 is provided in the inner half of the terminal arrangement direction, and is provided with a projection (not shown) that protrudes toward the projection wall 412 at the center in the connector width direction and connects the outer half to the projection wall 412. The inner half is formed to have two end wall recesses 414-4 separated by the protrusions in the width direction of the connector, in addition to the protrusions, which are lower than the outer half. Further, the outer half of the end wall 414 and the protrusion are formed at the same height as the outer half 413-2B of the side wall 413-2.

Similarly to the socket terminal 20 of the first embodiment, the socket terminal 420 has a U-shaped portion 421, a transfer portion 422, and is held. The portion 423 and the connecting portion 424 have different shapes from the corresponding portions of the socket terminal 20 as will be described later.

The U-shaped portion 421 is housed as shown in FIG. 8 and has a base portion 421A extending along the top surface of the bottom wall 411 to the connector width direction, and an inner side extending from the one end of the base portion 421A toward the upper side of the projecting wall 412. The contact portion 421B is contacted, and the wrist portion 421C is contacted from the other end of the base portion 421A so as to extend upward along the inner side surface of the inner side wall 411-1.

The inner contact arm portion 421B is embedded and held by the projecting wall 412 via integral molding in a state in which the flat plate surface is exposed from the side surface of the projecting wall 412, and the exposed plate surface can be connected to a plug described later. The inner side wrist portion 451A of the terminal 450 is in contact. The inner contact arm portion 421B is not protruded toward the distal end of the connector width direction (the side of the accommodating portion 415), and is not elastically displaced in the width direction (thickness direction) of the connector. The contact arm portion 21A of the socket terminal 20 of one embodiment is different. However, it is not necessary that the contact portion of the inner contact arm portion 421B does not protrude, and it may protrude to some extent.

The outer contact arm portion 421C is embedded and held via integral molding in a state where the flat plate surface thereof is exposed from the inner side surface of the inner side wall 411-1, and the exposed plate surface may be outside the plug terminal 450. The wrist 451B is in contact. The outer contact arm portion 421C does not have a locking portion that protrudes inward in the connector width direction (the housing portion 415 side), and is different from the locking arm portion 21C of the socket terminal 20 of the first embodiment. Moreover, the outer contact arm portion 421C, the upper end portion is facing the connector The plate surface exposed from the top surface (pressure-receiving surface 413D) of the inner side wall 413-1 is surface-contacted to the pressing heating surface of the pressing member to receive heat when the connector is mounted.

The transfer portion 422 is embedded and held in the protruding wall 412 in a state in which the upper end of the inner contact arm portion 421B extends inward in the connector width direction and the plate surface of the portion is exposed from the protruding wall 412. The plate surface exposed by the top surface (the pressed surface 412D) of the wall 412 is in contact with the pressing heating surface of the pressing member to receive heat when the connector is mounted. Further, the held portion 423 is extended from the transfer portion 422 toward the lower side of the bottom surface of the bottom wall 411 so as not to be inclined, and is not exposed from the protruding wall 412 and is buried and held by the protruding wall 412.

The connecting portion 424 extends straight from the lower end of the held portion 423 along the bottom surface of the bottom wall 411 toward the connector width direction, and extends out to the outside of the casing 410 to some extent. As seen from FIG. 8, the connecting portion 424 is in the connector width direction, and the size of the portion outside the position in which the U-shaped portion 421 is accommodated in the range of the bottom wall 11 is larger than the size (outer size) in which the U-shaped portion 421 is accommodated. Still big. Therefore, also in the present embodiment, the effects described in the first embodiment are obtained. Further, in the present embodiment, the extending portion of the casing 410 from the connecting portion 424 extends straight in the distal direction of the connector width direction. Alternatively, for example, the extending portion may be bent upward at a right angle. As described above, the above-described extended portion of the bent connecting portion 424 can prevent the edge portion of the end portion of the extended portion from being damaged to the circuit board or the conductive layer when the connector is mounted, as in the case of the first embodiment.

[Composition of plug connector]

The housing 440 of the plug connector 402 has two protruding walls 442 as rising walls extending from the bottom wall 441 and extending between the two side walls 443 in the terminal arrangement direction, as shown in FIG. At this point, it is substantially different from the housing 40 of the plug connector 2 of the first embodiment which does not have the protruding wall. The projecting wall 442 is connected to the end wall 444 at both end portions in the terminal arrangement direction, and is formed in a convex curved portion 442C whose upper end portion faces upward. The ridge line portion which becomes the top portion of the convex curved portion 442C is at the same height as the pressure receiving surface 443D of the side wall 443 and the pressure receiving surface 444B of the end wall 444, which will be described later, and receives the pressing force from the pressing member when the connector is mounted. Further, in a space in which the two projecting walls 442 extend in the terminal arrangement direction, the accommodating portion 445 for accommodating the projecting wall 412 of the receptacle connector 401 is formed in the connector fitting state.

As seen in Fig. 9, each of the side walls 443 has an inner side wall 443-1 and an outer side wall 443-2 which extend in parallel with each other in the terminal arrangement direction. The inner side wall 443-1 is surrounded by the protruding wall 442, the outer side wall 443-2, and the end wall 444, and the four-corner annular space surrounding the inner side wall 443-1 is formed in the connector fitting state. The side wall recess 443-4 of the side wall 413 of the receptacle connector 401 is received. Moreover, the outer side wall 443-2, as seen in Fig. 9, is lower than the inner side wall 443-1. The flat top surface of the inner side wall 443-1 is a pressure receiving surface 443D for receiving the pressing force from the pressing member when the connector is mounted.

End wall 444, as seen in Figure 9, the outer side wall 443-2 This link. The end wall 444 has an outer half 444-2 in the terminal arrangement direction lower than the inner half 444-1, and the top surface of the end wall 444 is stepped. The inner half 444-1 of the end wall 444 is immersed in the central position in the width direction of the connector to form the end wall immersion portion 444-1A, and the end wall immersion portion 444-1A accommodates the socket connector in the connector fitting state. The protrusion of the end wall 414 of 401. The flat top surface of the inner half 444-1 of the end wall 444 is a pressure-receiving surface 444B for receiving the pressing force from the pressing member when the connector is mounted.

As seen from FIG. 8, the plug terminal 450 has a concave U-shaped portion 451 and an inner wrist from the two wrist portions of the concave U-shaped portion 451, similarly to the plug terminal 50 of the first embodiment. The upper end (the lower end in FIG. 9) of the portion 451A extends in a straight connecting portion 454 toward the connector width direction. However, the plug terminal 450 has a concave U-shaped portion 451 extending along the outer surface of the protruding wall 442. At this point, the plug terminal of the first embodiment extends along the outer surface of the side wall 43 with the concave U-shaped portion 51. 50 different. Further, the outer arm portion 451B of the recessed U-shaped portion 451 of the plug terminal 450 is a plate surface exposed from the side surface of the protruding wall 442, that is, the entire plate surface that is in contact with the outer side of the socket terminal 420 in contact with the wrist portion 421C is The flat surface is different from the plug terminal 50 of the first embodiment in which the concave portion 51B-1 is formed in a concave shape.

As seen from FIG. 8, the connecting portion 454 of the plug terminal 450 is in the connector width direction, and the size of the portion outside the concave U-shaped portion 451 in the range of the bottom wall 411 is smaller than the concave U-shaped portion 451. The size (outer size) is also large. Therefore, also in the present embodiment, the effects described in the first embodiment are obtained. Moreover, in the present embodiment, The extended portion of the casing 440 from the connecting portion 454 extends straight in the distal direction of the connector width direction, but instead, for example, the extended portion may be bent upward at a right angle. Thus, by the above-described extending portion of the flexure connecting portion 454, as described in the relevant socket connector 401, it is possible to prevent the edge portion of the end portion of the extended portion from being damaged to the circuit substrate or the conductive layer when the connector is mounted. .

[Installing the connector to the circuit board]

The socket connector 401 and the plug connector 402 of the present embodiment are separated from the conductive layer by pressing and heating the pressing member after applying the coating agent in the same manner as in the first embodiment. It is mounted to the circuit board. In the present embodiment, the socket connector 401 receives the pressing force from the pressing member on the pressed surface 412D of the protruding wall 412 and the pressed surface 413D of the side wall 413, and contacts the upper end portion of the wrist portion 421C on the outer side of the socket terminal 20 and The exposed faces of the respective portions of the transfer portion 422 are subjected to heat from the pressing member. Further, the plug connector 402 is received by the pressed surface 443D of the inner side wall 444-1, the pressed surface 444B of the inner half 444-1 of the end wall 444, and the ridge portion of the convex curved portion of the protruding wall 442 from the pressing member. The pressing force receives heat from the pressing member at the ridge portion of the coupling portion 451C of the plug terminal 450.

[Mixed action of connector]

The socket connector 401 and the plug connector 402 are fitted and connected to each other after being mounted on the circuit board, respectively, in the following manner. First, as shown in Figure 8. As seen, the socket connector 401 is in a posture in which the accommodating portion 415 and the side wall recessed portion 413-4 are opened upward, and the plug connector 402 is formed such that the accommodating portion 445 and the side wall recessed portion 443-4 are opened downward. The upper position of the socket connector 1. Next, as shown by the arrow in FIG. 8, the plug connector 402 is moved downward, and the protruding wall 412 of the plug connector 402 is inserted into the housing portion 415 of the receptacle connector 401 from above. At this time, the side wall 413 of the receptacle connector 401 (the portion other than the outer half of the outer side wall 413-2) is fitted into the side wall recess 443-4 of the plug connector 402 from below. Moreover, the inner half 444-1 of the end wall 444 of the plug connector 402 is embedded from above into the end wall recess 414-4 of the receptacle connector 401 while the tab of the receptacle connector 401 is embedded into the plug connector 402 from below. The end wall of the end wall 444 is immersed in the portion 444-1A.

As a result, as shown in FIG. 10, the concave U-shaped portion 451 of the plug terminal 450 of the plug connector 402 is recessed into the contact arm portion 421B of the receptacle terminal 420 of the receptacle connector 401 that accommodates the U-shaped portion 421, 421C between each other. Then, the inner arm portion 451A and the outer arm portion 451B which are recessed into the U-shaped portion 451 are brought into contact with the inner side contact arm portion 421B and the outer side contact arm portion 421C which are accommodated in the U-shaped portion 421 by pressure contact. As a result, the terminals of the connector are electrically connected to each other, and the fitting and connection of the connectors are completed.

Moreover, as seen in FIG. 10, in the connector fitting state, the top surface of the outer half of the outer side wall 413-2 of the receptacle connector 401, and the lower surface of the outer side wall 443-2 of the plug connector 402 (in the figure) 9 is the top surface), which is at the center of the vertical direction (height direction) contact. That is, as seen in Fig. 10, in the connector fitting state, the outermost side faces of the outer side walls 413-2, 443-2 of the connectors 401, 402 are positioned at the same position in the connector width direction. As described above, in the present embodiment, the outer side wall 443-2 of the plug connector 402 is not embedded in the recess formed inside the side wall 413 of the receptacle connector 401, and the coating can be prevented from being solidified at the plug connection. The coating agent on the outer face of the side wall 443 of the device 402 interferes with the side wall 413 of the receptacle connector 401.

1‧‧‧Socket connector

2‧‧‧ plug connector

10‧‧‧shell

11‧‧‧ bottom wall

11A‧‧‧ Hole Department

11B‧‧‧Shallow ditch

11C‧‧‧Deep Groove

11D‧‧‧ partition wall

12‧‧‧Breaked wall

12A‧‧‧Regular protrusions

12B‧‧‧Transformation allowable ditch

12C‧‧‧ next door

12D‧‧‧Be pressed

13‧‧‧ Sidewall (standing wall)

13A‧‧‧Into the Ministry

13B, 14A‧‧‧Ditch

13C‧‧‧ convex bend

13D‧‧‧Be pressed

14B‧‧‧Bucked noodles

20‧‧‧Socket terminal

21‧‧‧ Containing U-shaped parts

21A‧‧‧ Base

21B‧‧‧Contact wrist

21B-1‧‧‧Contacts

21C‧‧‧Locked wrist

21C-1‧‧‧Locking Department

22‧‧‧Transfer Department

23‧‧‧ Keeped Department

24‧‧‧Connecting Department

30‧‧‧Fixed metal fittings

34‧‧‧Fixed Department

40‧‧‧shell

41‧‧‧ bottom wall

41A‧‧‧ recess

41B‧‧‧The Ministry of Coverage

44‧‧‧End wall

45‧‧‧ Housing Department

50‧‧‧ plug terminal

51‧‧‧ recessed U-shaped part

51A‧‧‧ inside wrist

51A-1‧‧‧ Corresponding contact

51B‧‧‧Outer wrist

51B-1‧‧‧Detained Department

51C‧‧‧Connecting Department

Claims (9)

A socket connector is a socket connector that is disposed on a circuit board and that is fitted with a plug connector in a direction perpendicular to a surface of the circuit board; and is characterized in that: a housing is provided a bottom wall having a parallel bottom surface with respect to a surface of the circuit board and the bottom wall rising up, having at least two rising walls extending in one of the parallel directions with respect to the surface of the circuit board; and a plurality of socket terminals Arranged and held in at least one rising wall; the housing is attached to the inner side surface of the rising wall in the connector width direction of the opposite direction of the rising wall, and the top surface of the fitting side with the bottom wall The formed U-shaped inner wall surface forms an accommodating portion for accommodating the fitting portion formed by the plug connector; and the socket terminal has a U-shaped portion that extends along the inner wall surface of the accommodating portion and is formed The U-shape is opened toward the fitting side in the terminal arrangement direction, and the held portion has a fitting side end portion of the wrist portion that accommodates any one of the U-shaped portions along the inner side surface of the rising wall. turn a portion extending toward the substrate side and held by the rising wall; and a connecting portion extending from the substrate-side end portion of the held portion along the bottom surface of the bottom wall in the connector width direction and connected to the circuit The corresponding circuit portion of the substrate; in the socket connector, the connection portion of the socket terminal is in the width direction of the connector, and is larger in size than the portion in which the U-shaped portion is accommodated in the range of the bottom wall of the casing. The size of the U-shaped portion is also large. Such as the socket connector of claim 1, wherein The socket terminal is extended so as to be close to the U-shaped portion in the connector width direction toward the substrate side, and the connection portion extends so as to be received from the substrate-side end portion of the held portion in the connector width direction. The U-shaped portion leaves. The socket connector of claim 1 or 2, wherein the housing also has an end wall pair that connects the ends of the rising wall positions at both ends in the connector width direction to each other in the terminal arrangement direction. The fitting side end surface of the pair of the rising wall pair and the pair of the end wall pairs has a flat surface parallel to the circuit board, and the flat surface is formed to receive the fitting side when the connector is mounted on the circuit board The pressure of the pressure is pressed. The socket connector of claim 3, wherein the housing forms a pressed surface on a fitting side end surface of the rising wall holding the held portion of the socket terminal; and the socket terminal has a portion of the socket terminal from the above The exposed portion exposed by the pressed surface forms a plane with the above-mentioned pressed surface; and when the connector is mounted on the circuit board, the exposed portion is heated from the outside, and the heat is transmitted to the connecting portion. The socket connector of claim 4, wherein the exposed portion of the socket terminal is formed in the transfer portion, and is coupled to the connection portion via the held portion. The socket connector of claim 4, wherein the socket terminal has: a member having a component that is more toward the fitting side than an end portion of the end portion of the connecting portion that is opened from the side of the holding portion and extends to the standing wall The extension portion of the pressing surface; the exposed portion of the socket terminal is formed to extend from the fitting side end portion of the extension portion, and is connected to the connecting portion via the extension portion. A socket connector with a circuit board is an electrical connector for attaching a circuit board of the request 1 to 6 to a circuit board via a conductive layer, wherein the socket terminal is U The word shape portion has a contact arm portion forming a contact portion extending along an inner side surface of a rising wall and contacting the plug terminal; and the housing is formed with a terminal groove for receiving the contact arm portion Fading into the inner side surface of the rising wall, and forming a hole portion communicating with the terminal groove at a position corresponding to the rising wall in the connector width direction in the bottom wall; the connecting portion of the socket terminal and the circuit substrate The corresponding circuit portion is electrically connected to the conductive layer, and the substrate-side opening of the hole portion of the casing is closed by the conductive layer. A plug connector is a plug connector that is disposed on a circuit board and that is fitted to the receptacle connector in a direction perpendicular to a surface of the circuit board, and is characterized in that: a housing is provided a bottom wall having a parallel bottom surface with respect to a surface of the circuit board and the bottom wall, having at least two rising walls extending in one of the parallel directions with respect to the surface of the circuit board; and a plurality of plug terminals, The system is arranged to be held in at least one rising wall; The housing is formed as a fitting portion for recessing at least one rising wall toward the housing portion provided in the socket connector; the plug terminal has a concave U-shaped portion and is attached as the fitting portion Two side surfaces of the rising wall and the fitting side end surface extend and form a U-shape having a top portion viewed from the terminal arrangement direction on the fitting side; and the connecting portion is connected to the concave portion from both sides along the rising wall a substrate-side end portion of the wrist portion of any one of the U-shaped portions and extending along the bottom surface of the bottom wall and extending to a corresponding circuit portion of the circuit board in the connector width direction; in the plug connector, the connection portion of the plug terminal, In the connector width direction in the direction opposite to the rising walls, the size of the portion outside the concave U-shaped portion in the range of the bottom wall of the casing is larger than the size of the concave U-shaped portion. Big. The plug connector of claim 8, wherein the housing also has an end wall pair that connects end portions of the rising ends of the two ends positioned in the width direction of the connector in the terminal arrangement direction to each other, the above-mentioned stand The fitting side end face of the pair of the pair of the pair of the end wall and the pair of the pair of end walls has a flat surface parallel to the circuit board, and the flat surface is formed to withstand the engagement from the fitting side when the connector is mounted on the circuit board The pressure is pressed.