TW201509005A - Electric connector for circuit board and electric connector assembly - Google Patents

Abstract

The invention provides an electric connector for a circuit board and an electric connector assembly comprising the electric connector for the circuit board and a mating connector. The projecting amount of locking parts of a locking member of the electric connector for the circuit board can be increased and the locking state of the mutual stability of the locking parts can be guaranteed. The locking member (30) is accommodated in an accommodating part of a shell (10). The locking parts (35A, 35B) can move between a locking position and an unlocking position. The locking position is the position where the locking parts (35A, 35B) protrude towards a receiving part (16) and are in clamped and limited fit with locked parts of the mating connector (2) and the unlocking position is the position where the locking parts (35A, 35B) move towards the side of the end wall (15) on the other side in the terminal arrangement direction for unlocking. An elastic deformation member (40) applies an acting force on the locking member (30) to drive the locking member (30) to move towards the locking position.

Description

Electrical connector for circuit substrate and electrical connector assembly

The present invention relates to an electrical connector for a circuit board that is disposed on a mounting surface of a circuit board and that has a right angle to the mounting surface as a connector insertion/removal direction and that is connected to the upper target connector, and includes the circuit An electrical connector assembly for the electrical connector of the substrate and the target connector.

Such an electrical connector assembly system is disclosed in Patent Document 1. The electrical connector assembly system socket connector of Patent Document 1 is mounted on one circuit board, and the plug connector of the target connector is mounted on the mounting surface of the other circuit board, and the connectors are mounted on the mounting surfaces of the two circuit boards. In the parallel state, the mounting surface is fitted in a right angle direction as a fitting direction. In Patent Document 1, in order to make the difference between the socket side of the socket connector and the plug connector clear, the "socket side" is added. The same applies to the plug connector. The casing has a rectangular planar shape, and the longitudinal direction thereof is used as a terminal arrangement direction to arrange and hold the socket-side terminals. The socket-side housing has a bottom wall facing a mounting surface of one of the circuit boards, a protruding wall extending upward from the bottom wall and facing the terminal arrangement direction, and a protruding frame facing the mounting surface at a right angle; and forming a frame A peripheral wall that surrounds the protruding wall and rises upward from the bottom wall, and an annular space that opens upward between the peripheral wall and the protruding wall is formed as a fitting for receiving a plug connector as a target connector. Department of the Ministry of the Department. The peripheral wall has two socket-side side walls extending in the terminal arrangement direction, extending in a connector width direction at right angles to the terminal arrangement direction, and end portions of the socket-side side walls in the terminal arrangement direction Connected socket side end wall.

The socket side housing of Patent Document 1 is located at the foregoing The socket side locking fasteners are held at both ends outside the terminal arrangement range in the terminal arrangement direction. The socket-side locking fastener is formed by punching a metal plate and bending it in a thickness direction, and has a strip-shaped portion extending from a wall surface along the socket-side end wall (a wall surface at a right angle to the terminal arrangement direction). A tongue-shaped engaging piece that is bent toward the receiving portion side and extends downward. The engaging piece is elastically deformable in the direction in which the terminal is arranged, that is, in the thickness direction of the engaging piece, and functions as a socket-side locking portion for locking the plug connector.

In addition, the plug of the plug connector as the target connector The side casings are arranged to hold the plug-side terminals in the longitudinal direction thereof as the terminal arrangement direction. The plug-side housing has a peripheral wall which is composed of two plug-side side walls extending in the same direction as the socket-side side wall, and the aforementioned terminal extending in the same direction as the socket-side end wall for extending the plug-side side wall The plug-side end wall to which the end portions in the direction are connected to each other is formed as a fitting portion that enters the annular receiving portion formed in the socket-side housing from the upper side in a state in which the connector is fitted.

The plug side housing is in the direction in which the terminals are arranged The plug-side locking fasteners are held at both ends outside the terminal arrangement range. The plug-side locking fastener is formed by pressing a metal plate and bending it in a thickness direction, and has a plate surface extending outward from the outer side surface of the plug-side end wall toward the terminal arrangement direction and having a right angle to the vertical direction. The plate-shaped engaging projection. The engaging projection functions as a plug-side locking portion that locks the lower edge of the engaging piece as the socket-side locking portion in the connector pulling-out direction (upward) and locks it at the front end of the protruding side.

The connector assembly of Patent Document 1 in the connector In the fitting process, when the locking projection of the plug-side locking fastener is lowered, the front end of the engaging piece of the socket-side locking fastener is pressed toward the outer side (plate thickness direction) of the socket-side locking fastener and elasticized in the same direction. Deformation, allowing the locking projection to be further lowered (fitting advancement), and when the locking projection reaches a position lower than the engagement piece and becomes a connector fitting state, the engagement piece returns to a free state, the card The lower edge of the tab is located above the aforementioned locking projection. As a result, when an external force that is directed upward (in the direction in which the connector is pulled out) acts on the plug connector in the connector fitting state, the lower end of the engaging piece is locked upward by the engaging projection, and the connection is maintained. The lock status of each other.

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2011-065861

In Patent Document 1, when the pull-out force is inadvertently upward When an external force acts on the plug connector in the fitting state of the connector, the engaging piece of the socket-side locking fastener receives the aforementioned engaging protrusion from the plug-side locking fastener at the lower edge of the engaging piece Pull out the force. However, since the size of the portion of the engaging piece that can be locked by the engaging projection can be ensured only by the thickness of the engaging piece, the engaging piece is arranged in the terminal only by the locking projection. It is impossible to lock the connectors to each other in the position where the direction is shifted by the amount of the plate thickness. Further, since the engaging piece is formed as a part of the socket-side locking fastener, it has the same thickness as the other portions, and therefore has a limited thickness.

Therefore, in the circuit board of the form of Patent Document 1, In order to secure a stable locking state with the target connector, it is desirable to increase the amount of protrusion of the socket-side locking portion to form a larger range of the portion where the plug-side locking portion can be locked, and to lock the socket side. The portion can move the distance corresponding to the aforementioned range to make the lock and the lock release.

The present invention has been developed in view of such circumstances. The purpose of the present invention is to provide an electrical connector for a circuit board that can increase the amount of protrusion of a locking member provided in a locking member of a circuit board electrical connector, and that can secure a locked state of the locking portions, and a circuit board for the circuit board An electrical connector assembly of an electrical connector and an object connector.

<First invention>

The electrical connector for a circuit board according to the first aspect of the invention is a circuit board that is disposed on a mounting surface of a circuit board and that is connected to the target connector in a direction in which the mounting surface is at a right angle as a connector insertion/removal direction. In the electrical connector, the electrical connector for a circuit board has a housing extending in a longitudinal direction in a direction in which the mounting surface of the circuit board is parallel; and the longitudinal direction is used as a terminal arrangement direction. a plurality of terminals arranged in the housing; and a locking member and an elastic deformation portion held by the housing, the housing having a bottom wall facing the mounting surface of the one of the circuit boards, and the bottom wall a peripheral wall that rises upward, the peripheral wall has two side walls extending toward the terminal arrangement direction, and ends extending in a connector width direction at right angles to the terminal arrangement direction and for arranging the side walls in the terminal arrangement direction The end wall to which the parts are connected to each other is formed as a receiving portion for receiving the target connector by the space surrounded by the peripheral wall.

In the electrical connector for a circuit board, the present invention is characterized in that the locking member has a base portion having a portion extending toward the terminal arrangement direction along the bottom wall at a lower portion of the casing, and an upright portion. In a range of the housing in the terminal arrangement direction, the portion is raised upward from a part of the base portion, and the locking portion protrudes from the upper portion of the rising portion toward the one end wall side in the terminal arrangement direction, and is locked in the housing. In the locked portion of the object connector, the locked portion can be prevented from being pulled upward, the foregoing The lock member is housed in the accommodating portion of the casing, and the lock portion protrudes toward the receiving portion to be locked to the locked position of the locked portion of the target connector and moves toward the other end wall side in the terminal arrangement direction. The unlocking position is movable between the unlocking positions, and the elastic deformation portion applies a spring force to the locking member to move the locking member toward the locking position.

In the present invention, the locking portion of the locking member is located at the end The upper portion of the rising portion in the range of the casing in the sub-arrangement direction protrudes toward one end wall side. In the case of the casing, the terminal arrangement direction is the longitudinal direction of the casing, and in the present invention, the movement of the lock portion between the locked position and the unlocked position is performed by the long extending range. Therefore, the size of the connector in the terminal arrangement direction is not increased, and the lock portion can be moved. In the present invention, in the connector fitting process, the locking portion of the locking member in the locking position abuts against the locked portion of the object connector brought up from above, by the locked portion in the terminal arrangement direction The pressing force is received toward the other end wall side to reach the unlocking position. At this time, the elastic deformation portion receives the pressing force via the locking portion and elastically deforms in the terminal arrangement direction, and allows the movement of the rising portion and the locking portion toward the other end wall side. Further, since the lock portion retreats from the lock position at which the vertical movement of the locked portion interferes with the lock release position, the lock portion is allowed to move downward. As a result, when the locked portion reaches a position lower than the lock portion, the elastic deformation portion reduces the amount of elastic deformation, and moves toward the lock position toward the lock position, that is, toward the one end wall side, and the lock portion faces toward The upper position of the lock portion protrudes, and the locked portion is locked to the upper side, that is, the locked state.

In the present invention, the rising portion and the locking portion are arranged in the terminal arrangement side. Moves within the range of the upward housing. As described above, since the terminal arrangement direction is the longitudinal direction of the casing, even if the amount of protrusion of the lock portion is ensured to be large, it is possible to easily ensure the lock portion and the upright portion within the range of the casing. The space for movement in the direction in which the terminals are arranged can ensure a stable locking state.

In the present invention, the locking member can also be provided with a lock release operation. The lock release operation portion has a portion exposed to the outside of the casing, and the lock member can be pressed toward the lock release position by the elastic force of the elastic deformation portion with the portion.

Because the aforementioned unlocking operation is set by the locking member When the lock release operation portion receives the pressing force as the operating force, the rising portion and the locking portion of the lock member move toward the other end wall side of the housing in the terminal arrangement direction. Therefore, the locked state is released, and the object connector can be easily pulled upward.

In the present invention, the locking member can also be erected from the base. An inverted L-shaped supported portion that is bent toward one end wall side of the casing in the terminal array direction and a protruding-shaped restricted portion that rises from the base portion are supported when the locking member is at the locked position. The locking portion of the portion that is locked in the direction perpendicular to the bottom wall of the casing is prevented from coming off the casing, and the maximum amount of movement of the locking member toward the one end wall side is restricted by the restricted portion. .

Thus, by providing the aforementioned supported portion in the locking member, Locking the supported portion and the corresponding portion of the housing to prevent the locking member from the housing The body falls off. Further, by providing the above-described restricted portion in the lock member, the maximum amount of movement of the lock member toward the one end wall side is restricted by the restricted portion, and the amount of lock of the lock portion to the locked portion of the target connector is restricted. The maximum value. Therefore, it is possible to prevent the locking portion from being damaged when the locked portion is abutted from the upper portion to the locking portion during the fitting of the connector due to the excessive locking amount.

The elastic deformation portion may also be located at the rising portion of the locking member. Or a spring force in the direction in which the terminals are arranged is generated between the supported portion and the casing.

The elastic deformation portion can also be integrally formed in the locking structure Pieces. As described above, the elastic deformation portion and the lock member are integrally formed, and the number of parts can be reduced as compared with the case where the two are made as different members.

Alternatively, the housing system has an island shape in the receiving portion and is bottomed a protruding wall portion that protrudes toward the terminal arrangement direction, and a groove portion that is located in a line in the terminal arrangement direction is formed in the protruding wall portion and the end wall of the housing, and a groove portion of the end wall and a groove portion of the protruding wall portion A receiving groove is formed as a receiving portion for accommodating the locking member.

Thus, because the protruding wall portion and the end wall of the housing are located in the terminal block In the range of the casing in the column direction, even if the receiving groove for the locking member is formed by the protruding wall portion and the end wall, the connector is not enlarged in the terminal arrangement direction.

<Second invention>

An electrical connector assembly according to a second aspect of the invention, comprising: the electrical connector for a circuit board; and an object connector that is mated to the electrical connector for the circuit board, the target connector having: a connector embedded in the connector In the closed state, the locked portion that locks the locking portion of the locking member of the electrical connector for the circuit board in the direction in which the connector is prevented from being pulled out is blocked.

As described above, in the present invention, the rising portion and the locking portion of the locking member are arranged in the terminal arrangement direction, in other words, in the longitudinal direction of the housing, within the range of the housing. Therefore, even if the amount of protrusion of the lock portion is ensured to be large, it is easy to ensure a space in which the lock portion and the upright portion are allowed to move in the direction in which the terminal arrangement is arranged, regardless of the presence or absence of the arrangement of the lock member. The connector is not enlarged in the direction in which the terminals are arranged, and the locked state can be stably obtained.

1‧‧‧Socket connector

2‧‧‧ plug connector (object connector)

10‧‧‧Socket side housing

11‧‧‧ bottom wall

12‧‧‧ protruding wall

13‧‧‧Wall

14‧‧‧ side wall

15‧‧‧End wall

18‧‧‧Locking fastener housing groove (accommodating part)

20‧‧‧ terminals

30‧‧‧Locking fasteners (locking members)

31‧‧‧ base

32A‧‧‧First Standing Department

32B‧‧‧Second Standing Department

33A‧‧‧First supported part

33B‧‧‧Second supported part

34A‧‧‧First Restricted Department

34B‧‧‧Second Restricted Department

35A‧‧‧First Locking Department

35B‧‧‧Second Locking Department

36‧‧‧Lock release operation

40‧‧‧Elastic deformation members (elastic deformation)

82D-1‧‧‧ inside locked part

83D-1‧‧‧Outside locked part

Fig. 1 is a perspective view showing a socket connector according to an embodiment of the present invention and a plug connector for fitting the socket connector from above, showing a state before the connector is fitted.

Fig. 2 is a perspective view showing the socket connector and the plug connector of Fig. 1 upside down and displayed in a posture in which the plug connector is fitted from below.

Figure 3 is a locking fastener of the socket connector of Figure 1 and an elastic deformation structure (A) is a view showing both the locking fastener and the elastic deformation member, (B) showing only the locking fastener, and (C) showing only the elastic deformation, the oblique view of the member is displayed in the position of the socket connector of FIG. member.

4 is a cross-sectional view of the socket connector of FIG. 1 in a direction perpendicular to the direction in which the connector is inserted and removed.

5 is a cross-sectional perspective view showing a face at right angles to the width direction of the connector in the mounting process of the locking fastener and the elastic deformation member of the receptacle connector of FIG. 1, (A) showing the locking fastener and the elastic deformation member. Before installation, (B) is to display the locking fastener and the elastic deformation member after installation.

Fig. 6 is a cross-sectional view of the socket connector and the plug connector in a fitted state at a right angle to the connector width direction, showing the state in which the locking fastener is moved.

Fig. 7 is a view showing the object locking fastener provided on one end side in the terminal arrangement direction of Fig. 6, (A) is a perspective view, and (B) is a partial enlarged view of Fig. 6.

Fig. 8 is a perspective view showing the locking fastener of the receptacle connector and the object locking member of the shield connector and the plug connector when the connector is fitted.

Fig. 9(A) is a perspective view showing a locking fastener according to a second embodiment, and Fig. 9(B) is a perspective view showing a locking fastener according to a modification of the second embodiment.

Fig. 10(A) is a cross-sectional view showing a part of the receptacle connector of the third embodiment, and Fig. 10(B) is a cross-sectional view showing a part of the receptacle connector according to a modification of the third embodiment, showing the width direction of the connector. Right angled face Section.

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

<First embodiment>

Fig. 1 is a perspective view showing the receptacle connector 1 of the present embodiment and a plug connector 2 for fitting the receptacle connector from above, showing a state before the connector is fitted. Fig. 2 is a perspective view showing the socket connector 1 and the plug connector 2 of Fig. 1 upside down and displayed in a posture in which the plug connector 2 is fitted from below.

The socket connector 1 of the present embodiment and the plug connector 2 as the target connector of the receptacle connector 1 are respectively arranged on electrical connectors for circuit boards on mounting surfaces of different circuit boards (not shown). A connector assembly in a direction in which the surface of each circuit board is perpendicular (the vertical direction in FIG. 1) is used as a plug-in direction.

As shown in FIG. 1, the socket connector 1 has a socket-side housing 10 having a substantially rectangular parallelepiped shape, and the longitudinal direction of the socket-side housing 10 is used as a terminal arrangement direction, and the socket-side housing 10 is arranged and held. a plurality of terminals 20 in two rows; a locking fastener 30 as a locking member and an elastic deformation member 40 as an elastic deformation portion (refer to FIG. 2) held in the longitudinal direction of the socket-side housing 10; a shield member of the socket side housing 10 mounted to the peripheral wall of the socket side housing 10 50. The receptacle connector 1 is mounted on a circuit board in a posture as shown in FIG.

The socket side housing 10 is electrically insulated, for example, of a resin or the like. The edge material is formed to extend in a longitudinal direction (terminal arrangement direction) in a direction parallel to the mounting surface of the circuit board. The socket side housing 10 has a bottom wall 11 (see FIG. 2) parallel to the mounting surface; in FIG. 1, a protruding wall portion 12 rising upward from the bottom wall 11 and extending toward the terminal arrangement direction; And a frame-shaped peripheral wall 13 that rises upward from the bottom wall 11 and surrounds the protruding wall portion 12. The peripheral wall 13 has a pair of side walls 14 extending in the direction in which the terminals are arranged, and a connector extending in a width direction at a right angle to the terminal arrangement direction for connecting the ends of the pair of side walls 14 to each other. Opposite end wall 15. An annular space that opens upward between the protruding wall portion 12 and the peripheral wall 13 is formed as a receiving portion 16 for receiving the peripheral wall 63 as a fitting portion of the plug connector 2.

In the foregoing socket side housing 10, the end for holding the terminal 20 The sub-accommodating portion 17 is formed in two rows symmetrically with respect to the center line in the longitudinal direction of the protruding wall portion 12 in the connector width direction, and is arranged at equal intervals in the terminal array direction. Each of the terminal accommodating portions 17 has a vertical groove portion 17A (see FIG. 1) that is immersed in the vertical direction from the side surface of the protruding wall portion 12, and a horizontal groove portion 17B that penetrates the bottom wall 11 in the vertical direction and extends in the connector width direction. (see Fig. 2); and a terminal holding hole portion 17C (see Fig. 1) that penetrates the side wall 14 in the vertical direction.

Outside the side wall 14 of the socket side housing 10 and located The outer side wall of the outer side of the extension wall 15 is arranged at the terminal A plurality of positions outside the terminal arrangement range in the direction are formed with a shield member holding groove 14A for holding the held side plate portion 52 of the shield member 50 to be described later, which is formed to extend upward at a right angle to the connector width direction. The slit-shaped groove of the opening. Further, the outer side surface of the side wall 14 is formed to extend in the vertical direction between the adjacent shield member holding grooves 14A for accommodating the leg receiving groove 14B of the shield member 50 having a wide width and the shield leg portion 56 to be described later. Further, on the inner side surface of the side wall 14, at a position outside the terminal arrangement range in the terminal arrangement direction, the tongue receiving groove 14C for accommodating the shielding tongue 55 of the shield member 50 to be described later is formed on the upper surface and the inner side surface of the side wall 14. The full range. The tongue receiving groove 14C has a lateral groove portion that is immersed from the upper surface of the side wall 14 and a vertical groove portion that is immersed from the inner side surface of the side wall 14.

The socket side housing 10 is configured to hold the locking fastener 30 and the bullet In the form of the deformable member 40 and the shield member 50, the lock fastener 30, the elastic deformation member 40, and the shield member 50 will be described first before the socket-side housing 10 is further described in order to understand the configuration.

Figure 3 is a locking fastener 30 of the socket connector 1 of Figure 1 The oblique view of the elastic deformation member 40 is displayed in the posture of the socket-side housing 10 of FIG. 1, (A) is the display locking fastener 30 and the elastic deformation member 40, and (B) is only the locking fastener 30 is displayed. (C) shows only the elastic deformation member 40. 3(A) to (C) are shown in the same direction as FIG. 1.

As shown in Figures 3(A) and (B), the locking fastener 30 is attached to The metal plate is stamped into a predetermined state while maintaining a flat surface of the metal plate Made with shapes. The locking fastener 30 has a base portion 31 extending linearly in the direction in which the terminals are arranged, and two rising portions 32, two supported portions 33 and two restricted portions 34 rising upward from a portion of the base portion 31; a locking portion 35 projecting from an upper portion of each of the rising portions 32 toward one end side of the locking fastener 30 (left obliquely downward in FIGS. 3(A), (B)); and one end formed at the base portion 31 The lock release operation unit 36 is unlocked.

As shown in Fig. 3 (A), (B), the standing portion 32, the branch The receiving portion 33 and the restricted portion 34 are each closer to the one end side than the center position in the longitudinal direction of the base portion 31 (terminal arrangement direction) (the range of the lower left half of FIGS. 3(A) and (B)) and The range on the other end side (the range of the upper right half of FIGS. 3(A) and (B)) is one for each. In the following, for the convenience of the description, each of the rising portion 32, the supported portion 33, and the restricted portion 34 is referred to as a "first rising portion 32A" and a first supported portion 33A. In the first restricted portion 34A, the respective portions in the range on the other end side are referred to as [second rising portion 32B], [second supported portion 33B], and [second restricted portion 34B], respectively. . As shown in FIGS. 3(A) and 3(B), the first restricted portion 34A, the first raised portion 32A, and the first supported portion 33A are sequentially provided from one end of the base portion 31 toward the other end in the range of the one end side. . Further, in the range on the other end side, the [second supported portion 33B], the [second restricted portion 34B], and the [second rising portion 32B] are sequentially provided from one end to the other end of the base portion 31. Moreover, the second rising portion 32B is located at the other end of the base portion 31, and the second rising portion 32B is upward and downward. The side edge extending in the direction is formed with an upper protruding portion 32B-1 and a lower protruding portion 32B-2 at the upper end position and the lower end position.

In the upper part of each of the rising portions 32A, 32B, as described above, the shape A locking portion 35 that protrudes toward one end side in the longitudinal direction of the base portion 31 (terminal arrangement direction) is formed. In the present embodiment, for convenience of explanation, the locking portion that protrudes from the first rising portion 32A is referred to as a [first locking portion 35A], and a locking portion that protrudes from the second rising portion 32B is referred to as a [second locking portion 35B. ]. The lock portions 35A and 35B have an upper edge that has an oblique edge that slopes downward toward the one end side, and the lower edge extends in a direction (terminal arrangement direction) that is perpendicular to the vertical direction to form a hook shape (see also FIG. 5). (A), (B)). As will be described later, the lock portions 35A and 35B are engaged with the connector, and the locked portions 82D-1 and 83D-1 of the target lock fastener 80, which will be described later, which are provided in the plug connector 2, can be locked to the connector. Outbound direction (see Figure 6). Further, the rising portions 32A and 32B are respectively abutted against the upper inner wall surfaces (the restriction surfaces 18D-2 and 18C-2 to be described later) of the first protruding wall groove portion 18D and the second end wall groove portion 18C, as will be described later. Limit the movement towards the top.

The supported portions 33A and 33B are connected to the socket-side housing 10 The corresponding portion (the first end support portion 12B-2 and the second central support portion 12A-2 to be described later) is locked downward to prevent the lock fastener 30 from falling downward from the socket side housing 10 (refer to the figure). 5(B)) is formed in an inverted L shape that stands up from the base portion 31 and is bent toward the one end side in the terminal array direction. Among the inverted L-shaped portions of the supported portions 33A and 33B, the vertical portion extending in the vertical direction is abutting on the first end support portion as will be described later. 12B-2 and the restriction faces 12B-2A, 12A-2A of the second center support portion 12A-2 (end faces that are orthogonal to the terminal arrangement direction) and limit the maximum amount of movement of the lock fastener 30 toward the end wall 15 side of the one end side The part comes to function (see Figure 5(B)).

Further, the restricted portions 34A and 34B are used to be used as described later. The restriction faces 18B-1 and 18E-1 of the socket-side housing 10 (the inner wall surfaces of the first end wall groove portion 18B and the second protruding wall groove portion 18E to be described later) are connected to the end wall of the locking fastener 30 toward the one end side. The portion of the maximum movement amount on the 15 side is linearly formed upward from the base portion 31. Further, the restricted portions 34A and 34B are restricted by the upper inner wall surfaces (the restriction surfaces 18B-2 and 18E-2 to be described later) of the first end wall groove portion 18B and the second protruding wall groove portion 18E, respectively, as will be described later. Move above. In the present embodiment, the first restricted portion 34A is formed larger in size in the terminal arrangement direction than the second restricted portion 34B (see also FIGS. 5(A) and (B)), and the strength can be improved. This is because the first end wall groove portion 18B that accommodates the first restricted portion 34A is formed larger in the terminal arrangement direction than the second protruding wall groove portion 18E that accommodates the second restricted portion 34B.

The lock release operation portion 36 is attached to one end of the base portion 31. The down direction dimension is formed to be larger than the base portion 31. As shown in FIGS. 1 and 2, the lock release operation portion 36 is exposed to the outside of the socket-side housing 10 in the terminal arrangement direction. As will be described later, the lock release operation portion 36 receives a pressing operation in the terminal arrangement direction for performing the lock release.

As shown in FIGS. 3(A) and (C), the elastic deformation member 40 The strip-shaped metal plate member is 2 in the length direction of the metal plate member The positions are bent so as to be folded back in the thickness direction, and the entire shape is an elongated ring shape extending in the connector width direction (a direction perpendicular to the terminal arrangement direction). The two elastic arm portions 41 and 42 which are folded back and extend close to each other are a single-armed cantilever shape having a narrow end toward the free end, and the front ends of the elastic arm portions 41 and 42 are viewed from above when viewed from above. (Free ends) intersect each other (refer to Figure 4). Further, the elastic arm portions 41 and 42 have a single-arm cantilever shape in which the respective end portions in the longitudinal direction of the elastic deformation member 40, that is, the respective folded portions are used as fulcrums, and are elastically deformed in the direction in which the terminals are arranged in the plate thickness direction. In a state where the locking fastener 30 and the elastic deformation member 40 are held by the socket-side housing 10, the elastic deformation member 40 abuts the intersection portion of the elastic arm portions 41, 42 against the second rising portion of the locking fastener 30. The side edge of the 32B is given a spring force toward the one end side (the obliquely downward left side of FIG. 3(A) and the left side of FIG. 4) in the terminal arrangement direction.

As shown in Fig. 1, the shield member 50 is formed by punching a metal plate into a predetermined shape and then buckling in the thickness direction (see also Fig. 8). As shown in FIG. 1, the shield member 50 has an upper plate portion 51 that covers the upper surfaces of the both end walls 15 of the socket-side housing 10, and both end edges of the upper plate portion 51 in the connector width direction face downward. Bending at a right angle and extending toward the terminal arrangement direction, covering the side wall 14 outside the terminal arrangement range, and holding the held side plate portion 52 of the socket side housing 10; at the side end edge of the held side plate portion 52, facing the aforementioned connection The end plate portion 53 that covers the end wall surface of the end wall 15 in the width direction of the end portion of the end wall 15; and the continuous side plate portion 52 extends continuously along the side wall 14 toward the terminal arrangement direction, on the side of the terminal arrangement range The side plate portion 54 of the wall 14.

The held side plate portion 52 has: with its upper edge at the connector width a shielding tongue 55 that flexes downward toward the inside and extends toward the inside of the receiving portion 16; and a position outside the shielding tab 55 in the terminal arrangement direction, is bent at a right angle to the lower edge of the holding side plate portion 52 and The width of the connector extends outwardly in the width direction to shield the leg portion 56. The shielding tongue piece 55 is housed in the lateral groove portion of the tongue receiving groove 14C of the socket-side housing 10, and the free end side (lower end side) of the base portion (portion connected to the side of the upper edge of the held side plate portion 52). The portion is located outside the longitudinal groove portion of the tongue receiving groove 14C and extends toward the inside of the receiving portion 16. The free end side portion is formed to be elastically deformable in the plate thickness direction (connector width direction), and in the connector fitting state, the shield connection portion 84 of the object locking fastener 80 with the contact pressure and the plug connector 2 to be described later is used. contact. Further, the elastic deformation of the free end side portion is allowed to be performed by the vertical groove portion of the tongue receiving groove 14C.

The side plate portions 54 are in two positions in the terminal arrangement direction. The lower edge of the side plate portion 54 is bent at a right angle and extends outward in the connector width direction to form a narrow shield leg portion 57 having a width narrower than the width-wide shield leg portion 56. The wide-width shield leg portion 56 and the narrow-width shield leg portion 57 are soldered to the ground circuit portion of the circuit board.

The shield member 50 of such a structure is provided by the socket side housing The held side plate portion 52 of the shield member 50 is pressed into the shield member holding groove 14A to be held above. In the state in which the installation of the shield member 50 is completed, as shown in FIG. 1, the shield tongue 55 of the shield member 50 has its base portion accommodated in the lateral groove portion of the tongue receiving groove 14C, and the free end side portion faces The receiving portion 16 extends and extends. Further, the shield member 50 has a wide width, the shield leg portion 56 is housed in the leg portion accommodation groove 14B, and the narrow width shield leg portion 57 is located between the connection portions 23 of the terminal 20 to be described later.

Returning to the description of the socket side housing 10. Socket side housing 10 is a slit shape in which a locking fastener receiving groove portion 18 for accommodating the locking fastener 30 is expanded at a right angle to the width direction of the connector at a central position in the connector width direction, and is extended and formed in the terminal arrangement direction. The entire area of the socket side housing 10 is wide. As shown in FIG. 5(A), the lock fastener receiving groove portion 18 is formed in a symmetrical shape with respect to the center line of the connector width direction in the terminal arrangement direction.

As shown in FIG. 5(A), the locking fastener receiving groove portion 18 is The base portion 31 for accommodating the lock fastener 30, the rising portions 32A and 32B, the supported portions 33A and 33B, and the groove portions or the hole portions of the restricted portions 34A and 34B are formed to communicate with each other. Specifically, the locking fastener receiving groove portion 18 has a bottom groove portion 18A for receiving the base portion 31 of the locking fastener 30, a first end wall groove portion 18B for receiving the first restricted portion 34A, and a second upright portion for receiving the second standing portion a second end wall groove portion 18C of the portion 32B; a first protruding wall groove portion 18D for receiving the first rising portion 32A; a second protruding wall groove portion 18E for receiving the second restricted portion 34B; a first protruding wall hole portion 18F of the portion 33A; and a second protruding wall hole portion 18G for accommodating the second supported portion 33B. The first end wall groove portion 18B, the second end wall groove portion 18C, the first protruding wall groove portion 18D, the second protruding wall groove portion 18E, the first protruding wall hole portion 18F, and the second protruding wall hole portion 18G are arranged in the terminal arrangement direction. Located on a straight line. In this embodiment, by using the terminal arrangement The protruding wall portion 12 and the end wall 15 which are located in the range of the socket-side housing 10 in the direction form the locking fastener receiving groove 18 for receiving the locking fastener 30, and it is possible to prevent the socket connector 1 from being large in the terminal arrangement direction. Chemical.

As shown in FIG. 5(A), the bottom groove portion 18A penetrates and extends in the same direction along the entire area of the bottom wall 11 in the terminal arrangement direction. Further, the bottom groove portion 18A is a range corresponding to the receiving portion 16 in the terminal arrangement direction, that is, a range between the protruding wall portion 12 and the end wall 15, and penetrates in the vertical direction and communicates with the receiving portion 16. The first end wall groove portion 18B extends in the up-and-down direction on one end side of the one end side (the left end side in FIG. 5(A)) in the terminal arrangement direction, and opens toward the inner side in the terminal arrangement direction, that is, the receiving portion 16 side. Further, the second end wall groove portion 18C is extended in the up-and-down direction toward the other end side (the right end side in FIG. 5(A)) in the terminal arrangement direction, and is also oriented toward the terminal arrangement direction. That is, the receiving portion 16 is opened on the side. The upper inner wall surfaces (surfaces perpendicular to the vertical direction) of the end wall groove portions 18B and 18C are respectively abutted on the upper edge of the first restricted portion 34A and the second rising portion 32B of the lock fastener 30 as will be described later. The upper edges limit the restriction surfaces 18B-2 and 18C-2 that lock the fastener 30 upward.

The first protruding wall groove portion 18D is formed on one end side (the left end side in FIG. 5A ) of the protruding wall portion 12 and extends in the vertical direction and opens toward the outside of the terminal arrangement direction, that is, the receiving portion 16 side. The two protruding wall groove portions 18E are formed on the other end side (the right end side in FIG. 5A ) of the protruding wall portion 12 , and extend in the vertical direction and open toward the outer side in the terminal arrangement direction, that is, the receiving portion 16 side. The first protruding wall hole portion 18F is attached to The position of the protruding wall portion 12 in the terminal arrangement direction closer to the one end side than the center position is formed as a hole portion penetrating in the up-and-down direction, and the second protruding wall hole portion 18G is closer to the center of the protruding wall portion 12 The position on the other end side is formed as a hole portion penetrating in the vertical direction.

As shown in Fig. 5(A), at the protruding wall portion 12, at the terminal block The center position in the column direction is separated from the center wall portion 12A of the second protruding wall hole portion 18G and the one end portion (left end) in the same direction via the first protruding wall hole portion 18F and the first protruding wall groove portion 18D. The first end partition wall portion 12B of the first protruding wall hole portion 18F and the second end wall adjacent to the other end (right end) in the same direction are separated from the second end wall of the second protruding wall hole portion 18G and the second protruding wall hole portion 18G. The portion 12C is formed in an island shape.

The central partition portion 12A has a lower end toward the one end side The first central support portion 12A-1 and the second central support portion 12A-2 projecting from the other end side are formed in an inverted T shape. Further, the first end partition portion 12B has an upper end upper wall portion 12B-1 that extends toward the one end side and blocks the first protruding wall groove portion 18D, and a first end support portion that protrudes toward the other end side at the lower end side. 12B-2, the entire cross-sectional shape is formed into a crank shape. Further, the second end partition portion 12C has an upper end upper wall portion 12C-1 that extends toward the other end side and blocks the second protruding wall groove portion 18E, and a second end support portion that protrudes toward the one end side at the lower end side. In 12C-2, the entire cross-sectional shape is formed into a crank shape in which the cross-sectional shape of the first end partition wall portion 12B is reversed left and right. The lower surface of the upper wall portions 12B-1 and 12C-1 (the surface having a right angle in the vertical direction), in other words, the upper inner wall surface of the protruding wall groove portions 18D and 18E is the first one that abuts against the locking fastener 30 as will be described later. Standing The upper edge of the portion 32A and the upper edge of the second restricted portion 34B function to limit the restriction surfaces 18D-2 and 18E-2 that restrict the upward movement of the locking fastener 30.

The first protruding wall hole portion 18F is arranged in the terminal arrangement direction The first central support portion 12A-1 and the first end support portion 12B-2 which are close to each other are formed so as to narrow the lower portion, and are formed in a T shape as a whole. The second protruding wall hole portion 18G narrows the lower portion by the second central support portion 12A-2 and the second end support portion 12C-2 that protrude in the terminal arrangement direction, and is formed in an inverted T shape as a whole.

As shown in FIG. 5(B), in the present embodiment, by the first The end support portion 12B-2 is locked to the first supported portion 33A of the locking fastener 30, and the second central support portion 12A-2 is locked to the second supported portion 33B of the locking fastener 30 as the lock preventing fastener 30. The support portion that is detached from the lower side of the socket-side housing 10 functions. That is, in the present embodiment, the second central support portion 12A-1 and the second end support portion 12C-2 are not used as the support portions.

First end support portion 12B-2 and second central support portion 12A-2 The respective end faces (faces that are at right angles to the terminal arrangement direction) abut against the longitudinal portions of the supported portions 33A, 33B of the lock fastener 30 as restrictions for restricting the movement of the lock fastener 30 toward one end side in the terminal arrangement direction. The faces 12B-2A and 12A-2A function.

The first end wall groove portion 18B and the second protruding wall groove portion 18E The inner wall surface of the locking fastener 30 abuts against the restricted portions 34A, 34B of the locking fastener 30, and serves as a restriction surface 18B-1 for restricting the movement of the locking fastener 30 toward the one end side in the terminal arrangement direction, 18E-1 Play the function.

Moreover, as shown in FIGS. 2 and 4, the socket side housing 10 is respectively The elastic deformation member accommodation recess 19 for accommodating the elastic deformation member 40 is opened at the both end portions in the terminal arrangement direction upward (in FIGS. 1 and 5 (A) and (B) below). In the present embodiment, the elastic deformation member 40 is accommodated only in the elastic deformation member housing recess 19 provided on the other end side in the terminal arrangement direction (the right end side in FIGS. 2, 4, 5 (A), and (B)). In other words, in the present embodiment, the elastic deformation member housing recess 19 provided on one end side (the left end side in Figs. 2, 4, 5 (A), and (B)) is not used. As shown in FIGS. 2 and 4, the elastic deformation member housing recess 19 has a long hole shape that can be fitted to the elastic deformation member 40 in the width direction of the connector when viewed in the vertical direction, as shown in FIG. 5(A). In the up-and-down direction, the intermediate position from the end wall 15 extends to the bottom surface of the bottom wall 11 and opens downward. Further, as shown in FIGS. 2 and 4, the elastic deformation member accommodation recess 19 intersects the lock fastener accommodation groove portion 18, and the bottom groove portion 18A, the first end wall groove portion 18B, and the second end wall of the lock fastener accommodation groove portion 18. The groove portion 18C is in communication.

Next, the mounting of the lock fastener 30 and the elastic deformation member 40 toward the socket side casing 10 will be described with reference to Figs. 5(A) and (B). First, as shown in FIG. 5(A), the supported portions 33A and 33B of the lock fastener 30 are respectively positioned at the same position as the protruding wall holes 18F and 18G of the socket-side housing 10 in the terminal arrangement direction. The locking fastener 30 is located below the socket side housing 10. Then, the lock fastener 30 is moved upward (arrow P1), so that the supported portions 33A, 33B respectively enter the protrusion The wall holes 18F and 18G allow the lateral portions of the supported portions 33A and 33B to reach above the first end support portion 12B-2 and the first center support portion 12A-2. At this time, the base portion 31, the first rising portion 32A, the second rising portion 32B, the first restricted portion 34A, and the second restricted portion 34B of the locking fastener 30 respectively enter the bottom groove portion 18A of the socket side casing 10, A protruding wall groove portion 18D, a second end wall groove portion 18C, a first end wall groove portion 18B, and a second protruding wall groove portion 18E. Further, the lock release operation portion 36 is located outside the socket-side housing 10 on one end side (left end side) of the socket-side housing 10.

Next, one of the locking fasteners 30 in the direction in which the terminals are arranged The end side moves (arrow P2) so that the lateral portions of the supported portions 33A and 33B reach directly above the first end support portion 12B-2 and the first center support portion 12A-2. As a result, each of the lateral portions is supported by the first end support portion 12B-2 and the first central support portion 12A-2 so as to be restrained downward, and the lock fastener 30 is prevented from coming off the socket side casing 10. At this time, the locking portions 35A and 35B of the locking fastener 30 protrude outward from the first protruding wall groove portion 18D of the socket-side housing 10 and the second end wall groove portion 18C, respectively, and are positioned in the receiving portion 16. Further, the side edges (left edge) of the vertical portions of the supported portions 33A and 33B and the side edges (left edge) of the restricted portions 34A and 34B and the restriction surface 12B-2A of the first end support portion 12B-2, respectively The restriction surface 12A-2A of the second center support portion 12A-2, the restriction surface 18B-1 of the first end wall groove portion 18B, and the restriction surface 18E-1 of the second protrusion wall groove portion 18E are located close to each other and are located at a position where they can be abutted (refer to the figure). 5(B)).

Next, as shown in FIG. 5(A), the elastic deformation member 40 is used. Embedding the elastic deformation member toward the other end side (the right side in Fig. 5(A)) The recess 19 is mounted from below (arrow P3). In the present embodiment, the terminal between the second rising portion 32B of the locking fastener 30 of the locking fastener receiving groove portion 18 and the inner wall surface of the second end wall groove portion 18C (the surface at right angles to the terminal arrangement direction) has been accommodated. The dimension in the arrangement direction is formed to be smaller than the dimension in the terminal arrangement direction of the elastic deformation member 40. Therefore, the elastic deformation member 40 is housed in the elastic deformation member accommodation recess 19 in a state in which it is compressed in the terminal arrangement direction, that is, the elastic arm portions 41 and 42 of the elastic deformation member 40 are elastically deformed toward the other end side. . The elastic deformation member 40 is disposed between the upper protruding portion 32B-1 and the lower protruding portion 32B-2 of the second rising portion 32B in the elastic deformation member housing recess 19, and is restricted by the projections. The position in the direction.

Moreover, the elastic deformation member 40 is housed in the elastic deformation member. In the recess 19, the lock fastener 30 is pushed toward the one end side by the restoring force. As a result, the horizontal direction of each of the supported portions 33A and 33B of the lock fastener 30 is maintained in a state in which the first end support portion 12B-2 and the first center support portion 12A-2 are locked downward, and the lock fastener is held. 30 is held in the socket side housing 10. Further, the lock portions 35A and 35B that hold the lock fastener 30 are respectively protruded outward from the first projecting wall groove portion 18D of the socket side casing 10 and the second end wall groove portion 18C. Further, the supported portions 33A and 33B and the restricted portions 34A and 34B abut against the regulating surface 12B-2A of the first end support portion 12B-2 and the regulating surface 12A-2A of the second central support portion 12A-2, respectively. The restriction surface 18B-1 of the one end wall groove portion 18B and the restriction surface 18E-1 of the second protrusion wall groove portion 18E restrict the maximum of the locking fastener 30 toward the one end side. The amount of movement. In this manner, by limiting the maximum amount of movement of the locking fastener, the maximum value of the locking amounts of the locking portions 82A, 35D to the locked portions 82D-1 and 83D-1 of the target locking fastener 80 of the plug connector 2 to be described later is limited. Therefore, it is possible to prevent the locking portions 35A, 35B from being damaged when the object locking fastener 80 abuts against the locking portions 35A, 35B from above during the fitting of the connector due to the excessive locking amount.

In the present embodiment, the locking fastener 30 is attached to the terminal. The upper portion is movable in a locking position (locking position) (indicated by a solid line in FIG. 6) and a locking portion 35A from which the locking portions 35A and 35B are respectively received by the first protruding wall groove portion 18D and the second end wall groove portion 18C. Each of the 35B is accommodated between the first protruding wall groove portion 18D and the second locking end portion 18C in a "lock release position" (shown by a broken line in Fig. 6) against the above-described elastic force.

In this embodiment, as shown in FIGS. 5(A) and (B), Since the locking fastener accommodation groove portion 18 has a bilaterally symmetrical shape, the locking fastener 30 can be housed in the locking buckle even when the posture shown in FIGS. 5(A) and (B) is reversed. The piece accommodates the groove portion 18. In this manner, the base portion 31 of the locking fastener 30, the first rising portion 32A, the second rising portion 32B, the first supported portion 33A, the second supported portion 33B, and the second portion are reversed when the locking fastener 30 is reversed left and right. Each of the restricted portion 34A and the second restricted portion 34B is housed in the bottom groove portion 18A, the second protruding wall groove portion 18E, the first end wall groove portion 18B, and the second protruding wall hole portion 18G of the locking fastener accommodation groove portion 18, respectively. A protruding wall hole portion 18F, a second end wall groove portion 18C, and a first protruding wall groove portion 18D. Lock release operation portion 36 at the socket The other end side of the side case 10 (the right end in FIGS. 5(A), (B)) is located outside the case. Further, the elastic deformation member 40 is housed in the elastic deformation member housing recess 19 on one end side (the left end in FIGS. 5(A) and (B)), and the locking fastener is directed to the other end side (FIG. 5(A), (FIG. 5(A), B) on the right side)).

At this time, the lateral portions of the supported portions 33A, 33B are respectively second and second The end support portion 12C-2 and the first center support portion 12A-1 are locked to prevent the lock fastener 30 from being detached downward. Further, the supported portions 33A and 33B are respectively located at the end faces of the second end support portion 12C-2 and the first central support portion 12A-1 (surfaces perpendicular to the terminal arrangement direction), that is, the restriction faces 12C-2A, 12A. -1A (refer to Fig. 5 (A), (B))). Further, the restricted portions 34A and 34B are respectively located on the inner wall surfaces (surfaces perpendicular to the terminal arrangement direction) of the second end wall groove portion 18C and the first protruding wall groove portion 18D, that is, the restriction faces 18C-1 and 18D-1 ( Refer to the position where the contact is made with reference to Figs. 5(A) and (B)). As a result, by these restriction faces 12C-2A, 12A-1A, 18C-1, 18D-1, the maximum movement of the lock fastener 30 toward the other end side (the right side in Figs. 5(A), (B)) is restricted. the amount.

Moreover, at this time, the standing parts 32A, 32B and the regulated part The upper edges of the respective 34B and 34B are located on the upper inner wall surface (the surface perpendicular to the vertical direction) of the second protruding wall groove portion 18E, the first end wall groove portion 18B, the second end wall groove portion 18C, and the first protruding wall groove portion 18D. That is, the positions at which the restriction faces 18E-2, 18B-2, 18C-2, and 18D-2 (see FIG. 5(A)) abut each other, and the upward movement of the lock fastener 30 is restricted.

Terminal 20 is as shown in Figures 1 and 2, and will be performed on the metal plate. The strip-shaped sheet obtained by punching is bent in the direction of the sheet thickness to be produced. The terminal 20 has a base portion 21 (see FIG. 2) extending in the connector width direction in a lateral groove portion (a groove portion formed in the bottom wall 11) of the terminal housing portion 17, and is bent at a right angle at one end of the base portion 21, a contact arm portion 22 (see FIG. 4) extending upward in the vertical groove portion (the groove portion formed in the protruding wall portion 12) of the terminal accommodating portion 17, and a held arm extending upward from the base portion 21 in parallel with the contact arm portion 22. a portion (not shown); and a connecting portion 23 extending from the other end of the base portion 21 to the outside of the socket-side housing 10. The contact arm portion 22 is elastically deformed in the thickness direction of the connector, in other words, at the upper end of the contact arm portion 22, a contact protrusion 22A that protrudes outward in the connector width direction and is located in the receiving portion 16 is formed. . The terminal 20 having such a configuration is housed and held by the holding arm portion of the terminal 20 from the lower side (the bottom wall 11 side) of the socket-side housing 10 to the terminal holding hole portion 17C formed in the side wall 14 Inside the terminal housing portion 17.

Next, return to Figure 1, Figure 2 and Figures 6-8, as The structure of the plug connector 2 like a connector. The plug connector 2 has a plug-side housing 60 having a substantially rectangular parallelepiped shape; the longitudinal direction of the plug-side housing 60 serves as a terminal arrangement direction, and the plug-side housing 60 is arranged in a plurality of rows. The target terminal 70; and two object locking fasteners 80 held by both end portions (end walls 65 to be described later) of the plug-side housing 60 in the longitudinal direction. The plug connector 2 is attached to the circuit board in the posture shown in FIG. 2, and is attached to the receptacle connector 1 in a posture in which the upper and lower inversions are reversed as shown in FIG.

The plug side case 60 is electrically insulated, for example, of a resin or the like. The edge material is formed to extend in a longitudinal direction (terminal arrangement direction) in a direction parallel to the mounting surface of the circuit board. The plug-side housing 60 has a bottom wall 61 that is parallel to the mounting surface (see FIG. 1), and a peripheral wall that is a frame-shaped fitting portion that rises upward from the bottom wall 61 as shown in FIG. 63. The peripheral wall 63 has a pair of side walls 64 extending in the direction in which the terminals are arranged, and a connector extending in a width direction at a right angle to the terminal arrangement direction for connecting the ends of the pair of side walls 64 to each other. Opposite end wall 65. A space surrounded by the peripheral wall 63 and opened upward is formed as a receiving portion 66 for receiving the protruding wall portion 12 of the receptacle connector 1.

The plug side housing 60 is a holding object locking fastener In the form of 80, in order to understand this form, before the plug-side housing 60 is further described, the object-locking fastener 80 will be described.

The object locking fastener 80 is for stamping a metal plate into a predetermined shape Then, it is produced by buckling in the thickness direction. As is apparent from Fig. 2, the object locking fastener 80 has a base portion 81 located at a position where the plate surface is in contact with the upper end surface 65 of the plug-side housing 60; extending from the base portion 81 toward the terminal arrangement direction, along the end The two end portions of the inner and outer sides of the wall 65 are bent by the two locked leg portions 82, 83; and the base portion 81 extends in the connector width direction and is bent along both side wall faces of the end wall 65, and the socket connector 1 The shield tabs 55 of the shield member 50 are in contact with the two shield connecting portions 84.

Among the two locked leg portions 82, 83, will be located at the end wall The locked leg portion on the inner side wall side of the 65 is called the inner side locked leg. In the portion 82], the locked leg portion on the outer end wall surface side of the end wall 65 is referred to as an "outer locked leg portion 83". Fig. 7 is a view showing the object locking fastener 80 provided on one end side (left end side) in the terminal arrangement direction of Fig. 6, (A) is a perspective view, and (B) is a partial enlarged view of Fig. 6. Here, in FIG. 7(B), unlike FIG. 7(A), the lock portion 35A of the lock fastener 30 of the receptacle connector 1 is locked. As shown in FIGS. 7(A) and 7(B), the inner locked leg portion 82 has an inner exposed plate portion 82A that is coupled to the base portion 81 and extends upward (downward in FIG. 2); and serves as the inner exposed plate portion. The inner folded-back edge portion 82B of the upper edge of the portion 82A is folded back toward the outer side in the terminal arrangement direction (the left side in FIGS. 7(A) and (B)), and the inner side of the portion 82C is held downward. Further, the outer locked leg portion 83 has a plate portion 83A that is connected to the base portion 81 and extends outward (in the lower portion in FIG. 2), and a folded edge portion 83B that is outside the upper edge of the outer exposed plate portion 83A. The inner side (the right side in FIGS. 7(A) and (B)) of the terminal arrangement direction is folded back, and the outer side is held by the holding plate portion 83C.

Mounting the object locking fastener 80 to the plug side housing 60 In the state, the inner side exposed plate portion 82A and the outer side exposed plate portion 83A of the target locking fastener 80 are exposed so as to be formed on the same surface as the inner side surface and the outer side surface of the end wall 65, as shown in Fig. 7(B). Further, as shown in Fig. 7(A), the inner held plate portion 82C and the outer held plate portion 83C are formed on both side edges extending in the vertical direction, and the object locking by the plug side case 60 is formed to protrude. The press-fitting projections 82C-1 and 83C-1 for press-fitting at the time of press-fitting of the member 80. Furthermore, the press-in projection is not only retained by the plate portion In addition to the 82C and 83C, the exposed plate portions 82A and 83A may be provided. Further, instead of the held plate portions 82C and 83C, the press-fitting projections may be provided only on the exposed plate portions 82A and 83A.

As shown clearly in Fig. 7(B), the inner side is locked to the foot 82. The inner exposed plate portion 82A and the inner held plate portion 82C face each other in the terminal arrangement direction, and the hole portions 82D penetrating in the thickness direction are located at the same position when viewed from the terminal arrangement direction. The edge portions (the lower edges of FIGS. 7(A) and (B)) of the two hole portions 82D of the inner side locked leg portion 82 complement each other and have the inner side that is locked with the lock portion 35A of the lock fastener 30. The function of the locking portion 82D-1. In addition, the outer-side exposed plate portion 83A and the outer-side retained plate portion 83C are also facing each other in the terminal arrangement direction in the same manner as the inner-side locked leg portion 82, and each of the holes is formed in the plate thickness direction. The portion 83D is located at the same position when viewed from the terminal arrangement direction. The edge portions (the lower edges of FIGS. 7(A) and (B)) of the two hole portions 83D of the outer side locked leg portion 83 are complementarily formed to have the outer side locked as the locking portion for locking the locking member 30. The function of the part 83D-1.

In this embodiment, as shown in FIG. 6, it is arranged in the terminal arrangement. The inner side of the object locking fastener 80 on the one end side (the left end side in FIG. 6) in the direction is locked by the inner side locked portion 82D-1 of the locking leg portion 82 and the other end side (the right end side in FIG. 6) The outer side locked portion 83D-1 of the lock fastener 80 is used as a locked portion that is locked with the lock portions 35A, 35B of the lock fastener 30 of the receptacle connector 1. That is, in the present embodiment, the outer side of the object locking fastener 80 provided on one end side is locked by the leg portion 83. The inner side locked portion 83D-1 and the inner side locked portion 82D-1 of the object locking fastener 80 provided on the other end side (the right end side in FIG. 6) are not used as the locked portion. When the socket connector 1 is fitted and connected to the plug connector 2 in a posture in which the posture shown in FIGS. 5 and 6 is reversed, the outer side of the object locking fastener 80 on the one end side is locked by the locking portion 83D-1 and the other. The inner side locked portion 82D-1 on the one end side is used as a locked portion.

Returning to the description of the plug side housing 60. As Figure 2 understands As shown, on the upper surface of the end wall 65 (in the lower side in Figs. 1, 6), the recessed portion 65A for accommodating the base portion 81 of the object locking fastener 80 is formed as a groove portion extending in the width direction of the connector and extending toward the terminal arrangement direction. The cross recess of the groove intersection. On the inner end wall surface of the end wall 65, the inner groove portion 65B (see also FIG. 7(B)) for accommodating the inner side locked leg portion 82 of the object locking fastener 80 is continuous with the concave portion 65A and extends in the up and down direction. form. On the outer end wall surface of the end wall 65, the outer groove portion 65C (see also FIG. 7(B)) for accommodating the outer side of the object locking fastener 80 is continuous with the concave portion 65A and extends in the up-and-down direction. form. The side wall surface of the end wall 65, that is, the surface on the extension line of the outer side of the side wall 64 in the terminal arrangement direction, the side groove portion 65D for accommodating the shield connection portion 84 of the object locking fastener 80 is continuous with the concave portion 65A. It is formed by extending in the up and down direction.

The object locking fastener 80 is to be locked by the foot respectively 82 and 83 are press-fitted into the inner groove portion 65B and the outer groove portion 65C from above in FIG. 2, and are attached to the plug-side housing 60. In the state where the mounting is completed, the base portion 81 of the object locking fastener 80, the inner side locked leg portion 82, and the outer side are locked. The leg portion 83 and the shield connecting portion 84 are housed in the recess portion 65A, the inner groove portion 65B, the outer groove portion 65C, and the side groove portion 65D of the plug-side housing 60, respectively. Further, the press-fitting projections 82C-1 and 83C-1 of the holding plate portions 82C and 83C (both see FIG. 7(A)) bite into the inner edges of the inner groove portion 65B and the outer groove portion 65C which extend in the vertical direction. Thereby, the object locking fastener 80 is prevented from coming off.

The object terminal 70 is obtained by punching a metal plate. The strip piece is bent in the direction of the plate thickness to be produced. As shown in FIGS. 1 and 2, the target terminal 70 is integrally molded and held on each side wall 64 of the plug-side housing 60, and is disposed at equal intervals in the longitudinal direction of the side wall 64. The target terminal 70 has a linear connecting portion 71 extending from the side wall 64 toward the outer side in the connector width direction at substantially the same height position as the bottom wall 61 of the plug-side housing 60, and is continuous with the connecting portion 71. The upper portion (lower in FIG. 1) of 2 is flexed to be buried in the contact arm portion 72 of the side wall 64. The contact arm portion 72 extends along the inner side surface of the side wall 64, and the plate surface of the contact arm portion 72 is formed to be exposed to the receiving portion 66 so as to be flush with the inner surface of the side wall 64. On the exposed surface of the contact arm portion 72, a contact recess portion 72A in which the contact protrusion portion 22A for receiving the terminal 20 of the receptacle connector 1 is in contact with the contact protrusion portion 22A is formed from the plate surface.

Next, return to Figure 1 and Figure 6, illustrating the socket connector 1 mating with the connector of the plug connector 2. First, the socket connector 1 and the socket connector 2 are respectively mounted on the corresponding circuit board by soldering. Next, as shown in FIG. 1, the socket connector 1 is made to take over. The portion 16 is oriented upward, and is placed above the receptacle connector 1 with the receiving portion 66 (see FIG. 2) of the plug connector 2 facing downward.

Secondly, the plug connector 2 is made while maintaining the posture of FIG. Lowering, the protruding wall portion 12 of the receptacle connector 1 enters into the receiving portion 66 of the plug connector 2 from below, and the peripheral wall 63 of the plug connector 2 enters into the receiving portion 16 of the receptacle connector 1 from above. As a result, the contact protrusion 22A of the terminal 20 of the receptacle connector 1 protrudes into the contact recess 72A of the target terminal 70 of the plug connector 2, forming electrical contact between the terminals.

Also, in the connector fitting process, the plug connector 2 is provided. The lower ends of the two object locking fasteners 80 respectively abut against the upper edges (inclined edges) of the locking portions 35A, 35B (shown by solid lines in FIG. 6) of the locking fasteners 30 located at the locking position, and the locking portions 35A 35B is pressed in the terminal arrangement direction by the pressing force toward the other end side (the right end side in FIG. 6). The locking portions 35A and 35B are subjected to the aforementioned pressing force, and are moved toward the other end side (retracted) together with the rising portions 32A and 32B as shown by broken lines in Fig. 6, and are respectively accommodated in the first protruding wall groove portion 18D and the second end wall. The inside of the groove portion 18C reaches the lock release position. At this time, the movement of the lock portions 35A, 35B is elastically deformed (compressed) by the elastic deformation member 40, that is, elastic deformation toward the other end side of the elastic arm portions 41, 42.

As described above, the locking solution is reached by the locking portions 35A, 35B. In addition to the position, the plug connector 2 is allowed to descend further. Further, as shown in FIG. 6, the object locking fastener 80 of the one end side (the left end side in FIG. 6) The outer side of the hole locking portion 82D of the inner side locked leg portion 82 and the outer side (the right end side in FIG. 6) of the object locking fastener 80 are reached by the hole portion 83D of the locking leg portion 83 to the locking portions 35A, 35B of the locking fastener 30. At the position, the lock portions 35A, 35B are opened from the aforementioned pressing force. As a result, the elastic arm portions 41 and 42 of the elastic deformation member 40 are restored toward the one end side to reduce the amount of elastic deformation, and return to the first locking position. The locking portions 35A and 35B returning to the locking position are respectively inserted into the hole portions 82D and 83D as shown by the solid line in Fig. 6, and are located in the direction in which the connector is pulled out (upward) to the locked portions 82D-1, 83D- 1 (refer to Figs. 7(A) and (B)), that is, the positions at which the lower edges of the hole portions 82D and 83D are locked are in a locked state.

Also, as shown in FIG. 8, the object of the plug connector 2 is locked. The shield connecting portion 84 of the fastener 80 is elastically deformed by pressing the shielding tab 55 of the shield member 50 of the corresponding socket connector 1 toward the outside in the connector width direction, and is in contact with the shielding tab 55 with a contact pressure. .

Thus, the terminals 20, 50 are connected to each other, and the locking fasteners are 30, 80 are locked to each other, and the shielding tongue 55 and the shield connecting portion 84 are connected to each other, whereby the connector fitting operation is completed. In the connector fitting state, even if the plug connector 2 is inadvertently lifted in the connector pull-out direction (upper side), the upper portions of the restricting portions 34A and 34B are abutted against the socket-side housing by the rising portions 32A and 32B. The restriction faces 18D-2, 18C-2, 18B-2, and 18E-2 of 10 are so as to restrict the upward movement of the lock fastener 30. As a result, the locked states of the lock portions 35A and 35B of the lock fastener 30 and the locked portions 82D-1 and 83D-1 of the target lock fastener 80 are maintained, and a stable locked state can be maintained.

Next, the connector pull-out operation will be described based on Fig. 6 . When the plug connector 2 in the state in which the connector of the receptacle connector 1 is fitted is pulled out, the lock release operation portion 36 of the lock fastener 30 of the receptacle connector 1 is directed toward the other end side in the terminal arrangement direction (FIG. 6). The right side of the middle) is pressed to release the operation. When the lock release operation portion 36 receives the pressing force toward the other end side as the release operation force, the elastic deformation member 40 is elastically deformed in the same direction. Further, similarly to the description of the connector fitting process, the elastic deformation member 40 is compressed and elastically deformed, and the locking portions 35A and 35B move together with the rising portions 32A and 32B toward the other end side.

As a result, the lock portions 35A and 35B are respectively accommodated in the first The inside of the protruding wall groove portion 18D and the second end wall groove portion 18C reach the unlocking position (see broken line in FIG. 6), and the locking portions 35A and 35B and the locked portion 82D-1 of the target locking fastener 80 of the plug connector 2 are released. 83D-1 (refer to Fig. 7 (A), (B)) can be locked in the locked state. Then, by lifting the plug connector 2 in the direction in which the connector is pulled out (upward), the plug connector 2 can be easily pulled out to complete the connector pull-out operation.

The locking fastener 30 is located at the first portion of the vertical portion 32A, 32B The inside of the wall groove portion 18D and the second end wall groove portion 18C, and the locking portions 35A and 35B project from the upper portions of the rising portions 32A and 32B and are located in the receiving portion 16. In other words, the rising portions 32A and 32B and the locking portions 35A and 35B are located within the range of the terminal arrangement direction, that is, the longitudinal direction of the socket-side housing, within the range of the socket-side housing 10, and are moved within this range. Therefore, even if the amount of protrusion of the locking portions 35A, 35B is ensured to be large, it is not With or without the influence of the configuration of the locking fastener 30, it is possible to easily ensure a space in which the locking portions 35A, 35B and the rising portions 32A, 32B are moved in the aforementioned terminal arrangement direction within the aforementioned range, and thus the connector can be avoided. The size is increased in the direction in which the terminals are arranged. Further, in the present embodiment, the lock fastener 30 can be produced by maintaining the surface at right angles to the width direction of the connector without performing buckling. Therefore, in the width direction of the connector, the size of the plate thickness portion of the locking fastener 30 can be ensured in the range of the side walls 14 in the same direction, so that the size of the connector can be avoided even in the same direction. .

Further, in the present embodiment, the elastic deformation of the elastic deformation member 40 allows the movement of the lock fastener 30 in the terminal arrangement direction. Thus, by providing the elastic deformation member 40 which is different from the member of the locking fastener 30, it is not necessary to make the locking portions 35A, 35B themselves elastic, so that the rigidity of the locking portions 35A, 35B itself can be improved and the strength thereof can be improved. Get a stable lock state. Further, by increasing the amount of protrusion of the lock portions 35A and 35B, the rigidity of the lock portions 35A and 35B can be further increased to further increase the strength. Therefore, it is possible to further improve the stability of the lock state.

<Second embodiment>

In the first embodiment, the socket connector 1 is provided with the locking fastener 30 and the elastic deformation member 40, and the elastic deformation member 40 pushes the locking fastener 30. However, in the present embodiment, the elastic deformation member is not provided, and the locking buckle is not provided. The piece itself has an elastic deformation portion that is elastically deformable in the direction in which the terminals are arranged, It is different from the first embodiment.

Fig. 9(A) shows the locking fastener 130 of this embodiment. Oblique view. The locking fastener 130 of the present embodiment is produced by punching a metal plate into a predetermined shape and then performing buckling in the thickness direction. As shown in Fig. 9(A), the locking fastener 130 has a shape in which the two locking fasteners 30 of the first embodiment are overlapped, and the elastic deformation portions 137 to be described later are respectively second. The side edges of the rising portions 132B are connected to each other. The locking fastener 130 is formed by the two metal plate members in each portion of the locking fastener 30 formed by a single metal plate member in the first embodiment. In the present embodiment, the difference from the first embodiment will be mainly described. In the portion corresponding to the lock fastener 30 of the first embodiment, the sign of the first embodiment is added with [100], and the description thereof is omitted. Description.

The locking fastener 130 of the present embodiment is formed by The side edges of the two metal plate portions of the two standing portions 132B are formed by being coupled to each other by the elastic deformation portion 137. The elastic deformation portion 137 has substantially the same shape as the elastic deformation member 40 of the first embodiment, but the elastic arm portions 137A and 137B extending in the connector width direction do not have a tapered shape in the same direction, and The elastic deformation members 40 are different. The elastic arm portions 137A, 137B are respectively coupled to the side edges of the two metal plate portions forming the second rising portion 132B. The locking fastener 130 of such a shape is elastically deformed in the terminal arrangement direction by the elastic arm portions 137A, 137B, and allows the movement of the locking portions 135A, 135B between the locked position and the unlocked position in the same direction.

As in the present embodiment, the elastic deformation portion 137 is formed. In order to lock a part of the fastener 130, the number of parts can be reduced as compared with the case where the locking fastener and the elastic deformation member are produced as different members in the first embodiment. Further, in the embodiment of Fig. 9(A), since the rising portion 132, the supported portion 133, and the restricted portion 134 are formed by overlapping two plate-like members, respectively, a board is used as compared with the first embodiment. When the members are formed into respective portions, the strength of each portion can be doubled.

Fig. 9(B) shows the lock of the modification of the embodiment. An oblique view of the fastener 130'. In Fig. 9(B), the portions corresponding to the respective portions of the form of Fig. 9(A) are denoted by the symbols of ''. The locking fastener 130' is formed in a shape in which the elastic arm portion 137A and the one piece of the locking fastener portion coupled to the elastic arm portion 137A are omitted from the locking fastener 130 of FIG. 9(A). As shown in Fig. 9(A), even if the standing portion 132, the supported portion 133, and the restricted portion 134 are not overlapped, the strength of each portion can be sufficiently ensured, and FIG. 9(B) can be obtained. Such a shape. According to the form of FIG. 9(B), similarly to the embodiment of FIG. 9(A), it is not necessary to separately provide the elastic deformation member, so that the number of parts can be reduced.

<Third embodiment>

In the first embodiment, the elastic deformation member 40 is formed by bending the strip-shaped metal plate member. However, in the present embodiment, the elastic deformation member is not a metal plate member but a coil spring. One embodiment is different. Figure 10 (A) shows the socket of this embodiment A cross-sectional view of a portion of the connector 201. In the present embodiment, the difference from the first embodiment will be mainly described. In the portion corresponding to the receptacle connector 1 of the first embodiment, the symbol of the first embodiment is added to [200], and the description thereof is omitted. Description.

The socket connector of this embodiment is shown in FIG. 10(A) One end portion of 201 (a portion corresponding to the left half of Fig. 5(B)). As shown in FIG. 10(A), the receptacle connector 201 has an elastic deformation member 240 formed as a coil spring in the first protruding wall hole portion 218F of the socket-side housing 210. The elastic deformation member 240 is disposed so as to be elastically deformable in the same direction between the first supported portion 233A and the central partition portion 212A in the terminal arrangement direction, toward one end side in the terminal arrangement direction (FIG. 10(A) The left side) pushes the first supported portion 233A.

In FIG. 10(A), the display is provided in the first protruding wall hole portion. In the second embodiment, the second protruding portion hole portion 218G (not shown) is provided with elastic deformation for ejecting the second supported portion 233B (not shown) toward one end side in the terminal arrangement direction. Member 240 replaces this form. Further, the elastic deformation member 240 may be provided on both of the first protruding wall hole portion 218F and the second protruding wall hole portion 218G.

Moreover, in the form of FIG. 10(A), a locking fastener 230 The socket side housing 210 is provided. However, instead of this configuration, a locking fastener may be provided on each of both end sides of the socket side housing in the terminal arrangement direction. In this case, the locking fastener can be produced, for example, in a shape in which the portion of the first supported portion 233A of the locking fastener 230 of FIG. 10(A) is closer to the other end side (right end side). Also, two locking fasteners are attached One end side of each of the socket side housings is disposed, and is disposed symmetrically with respect to a center line of the connector side width direction of the socket side housing in the terminal arrangement direction. Further, the two locking fasteners are mutually approaching in the same direction by overcoming the elastic thrust from the respective elastic deformation members (coil springs) facing the terminal arrangement direction (the inner side of the terminal arrangement direction) ) Withstand the pressing operation for unlocking and reach the unlocked position.

Fig. 10(B) shows the insertion of a modification of the embodiment. A cross-sectional view of a portion of the seat connector 201' shows a section of a face that is at right angles to the width of the connector. In Fig. 10(B), the portions corresponding to the respective portions of the form of Fig. 10(A) are denoted by the symbols of ''. Similarly to Fig. 10(A), Fig. 10(B) shows the one end side portion of the receptacle connector 201' of the present embodiment. In this modification, the locking fastener 230' is in a shape that is closer to the other end side portion than the first rising portion 32A of the locking fastener 30 of the first embodiment, in the terminal arrangement direction of the receptacle connector 201'. One end is provided at each end, and in the terminal arrangement direction, the center line of the connector width direction is symmetrical.

As shown in FIG. 10(B), the socket connector 201' is inserted. The first protruding wall groove portion 218D' of the seat side casing 210' has an elastic deformation member 240' constituted by a coil spring. The elastic deformation member 240' is disposed in a lower portion of the first protruding wall groove portion 218D', and is elastically deformable in the same direction between the base portion 231' and the partition wall portion 212B' in the terminal arrangement direction, toward the terminal arrangement direction. The outer side is also the left side pushing base 231' in Fig. 10(B).

In the first to third embodiments, the locking portion of the locking fastener The lower edge extends substantially at right angles to the vertical direction, but may have an inclined edge that is inclined toward the distal end in the terminal arrangement direction instead of the configuration. In this manner, when the locking portion is provided with the inclined edge, when the connector is pulled upward by a certain amount or more of the pulling force when the connector is pulled out, the locked portion abuts from the lower side to the The lock portion is pressed toward the lock release position in the terminal arrangement direction at the inclined edge (lower edge) of the lock portion at the lock position. As a result, the elastic deformation of the elastic deformation member or the elastic deformation portion allows the lock portion to move toward the lock release position and release the lock state, so that the plug connector can be pulled out. That is, since the plug connector can be pulled out only by the operation of lifting the plug connector, it is not necessary to provide a lock release operation portion on the lock fastener. Such a form is suitable for a connector having a small locking strength. Further, in place of the lower edge of the lock portion, or the lower edge of the lock portion, the upper edge of the lock portion may be provided with an inclined edge that is inclined downward toward the lock portion side in the terminal arrangement direction. Get the same effect.

In the first to third embodiments, the plug connector is locked The fixed portion is formed on the object locking fastener, but it is not necessarily required to be formed on the object locking fastener, and may be formed, for example, on the plug side housing of the plug connector.

Further, in the first to third embodiments, the plug connector is The electrical connector for a circuit board is not limited to this, and may be, for example, an electrical connector for a cable connected to a cable.

In the first to third embodiments, the locking member and the elastic change The shaped member is formed as a fastener, but it can also replace this structure, the locking member and the elastic The deformable member is formed of, for example, a resin.

1‧‧‧Socket connector

2‧‧‧ plug connector (object connector)

10‧‧‧Socket side housing

12A‧‧‧Central Partition

12A-1‧‧‧First central support

12A-2‧‧‧Second central support

12B‧‧‧ first end partition

12B-2‧‧‧First end support

12C‧‧‧Second end partition

12C-2‧‧‧second end support

15‧‧‧End wall

18B‧‧‧First end wall groove

18B-1‧‧‧Restricted surface

18C‧‧‧Second end wall groove

18D‧‧‧First prominent wall groove

18E‧‧‧Second protruding wall groove

18E-1‧‧‧Restricted surface

18F‧‧‧First protruding wall hole

18G‧‧‧Second protruding wall hole

30‧‧‧Locking fasteners (locking members)

31‧‧‧ base

32A‧‧‧First Standing Department

32B‧‧‧Second Standing Department

32B-1‧‧‧Upper protrusion

32B-2‧‧‧Under the protruding part

33A‧‧‧First supported part

33B‧‧‧Second supported part

34A‧‧‧First Restricted Department

34B‧‧‧Second Restricted Department

35A‧‧‧First Locking Department

35B‧‧‧Second Locking Department

36‧‧‧Lock release operation

40‧‧‧Elastic deformation members (elastic deformation)

41, 42‧‧‧Flexible arms

50‧‧‧Shielding members

51‧‧‧Upper Board

60‧‧‧ plug side housing

61‧‧‧ bottom wall

65‧‧‧End wall

80‧‧‧Object locking fasteners

81‧‧‧ base

82‧‧‧The inside is locked to the foot

82D‧‧‧ Hole Department

83‧‧‧The outside is locked to the foot

83D‧‧‧ Hole Department

Claims (7)

An electrical connector for a circuit board is disposed on a mounting surface of a circuit board, and a connector connector is inserted and connected in a direction in which the mounting surface is at a right angle, and the target connector located above is fitted and connected, and the circuit board is powered The connector has a housing that extends in a longitudinal direction in a direction parallel to a mounting surface of the circuit board, and a plurality of terminals that are arranged and held in the housing in a direction in which the longitudinal direction is a terminal arrangement direction; a locking member and an elastic deformation portion held by the casing, the casing having a bottom wall facing the mounting surface of the one circuit board and a peripheral wall rising upward from the bottom wall, the peripheral wall having the terminal arranged toward the terminal Two side walls extending in the direction and end walls extending in the width direction of the connector at right angles to the terminal arrangement direction and for connecting the ends of the side walls in the terminal arrangement direction are surrounded by the peripheral wall The space is formed as a receiving portion for receiving the object connector, wherein the locking member has a base portion having a portion extending along the bottom wall toward the terminal arrangement direction at a lower portion of the housing; the rising portion rising upward from a portion of the base portion in a range of the housing in the terminal arrangement direction; and a locking portion The upper portion of the rising portion protrudes toward the one end wall side in the terminal arrangement direction, and is locked to the locked portion provided in the target connector, thereby preventing the locked portion from being pulled upward, and the locking member is housed. The accommodating portion of the casing is locked to the locking portion and locked to the locked position of the locked portion of the target connector and moved toward the other end wall side in the terminal arrangement direction to be unlocked. The lock release position is movable between the lockable members, and the elastic deformation portion applies a spring force to the lock member to move the lock member toward the lock position. The electrical connector for a circuit board according to the first aspect of the invention, wherein the locking member is provided with a lock releasing operation portion having a portion exposed to the outside of the casing, wherein the locking member overcomes the elasticity by the portion The elastic force of the deformed portion can be pressed toward the unlocked position. The electric connector for a circuit board according to the first or second aspect of the invention, wherein the locking member has an inverted L-shaped shape which is formed by buckling from the base portion and is bent toward one end wall side of the casing in the terminal arrangement direction. a support portion and a protrusion-shaped restricted portion rising from the base portion, and when the locking member is in the locking position, the supported portion and the corresponding portion of the housing are locked to prevent locking in a direction perpendicular to the bottom wall of the housing The member is detached from the casing, and the maximum amount of movement of the lock member toward the one end wall side is restricted by the restricted portion. The electrical connector for a circuit board according to claim 1 or 2, wherein the elastic deformation portion is located between the rising portion of the locking member or between the supported portion and the casing to generate a spring force in the terminal arrangement direction. The electrical connector for a circuit board according to claim 1 or 2, wherein the elastic deformation portion is integrally formed with the locking member. The electrical connector for a circuit board according to claim 1 or 2, wherein the housing has a protruding wall portion which is island-shaped in the receiving portion and protrudes from the bottom wall and extends toward the terminal arrangement direction, and protrudes in the housing The wall portion and the end wall are respectively formed with grooves which are in a straight line in the direction in which the terminals are arranged In the groove portion of the end wall and the groove portion of the protruding wall portion, a receiving groove as a housing portion for accommodating the locking member is formed. An electrical connector assembly, comprising: the electrical connector for a circuit board according to any one of claims 1 to 6; and an object connector that is mated to the electrical connector of the circuit substrate The target connector has a locked portion that can lock the locking portion of the locking member of the electrical connector for the circuit board in a direction in which the connector is prevented from being pulled out in the connector fitting state.