TWI445256B - Electrical connectors for circuit boards - Google Patents

Description

Electrical connector for circuit substrate

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

Most of the electrical connectors mounted on the circuit board are provided with metal plate members for shielding in the casing. As such a connector, for example, a connector disclosed in Patent Document 1 and Patent Document 2 is known.

In the patent document 1, the metal cover attached to the casing has a top plate portion located on the upper surface of the casing, a side wall portion on the side wall surface of the casing, and a grounding terminal portion formed by cutting a part of the top plate portion. . The top plate portion and the side wall portion function as a shield portion covering the casing, and the grounding terminal portion functions as a ground for grounding the flexible circuit board under the flexible printed circuit board connected to the connector. unit.

On the other hand, in Patent Document 2, a portion of the shield plate covering the upper surface of the casing is cut, and a contact portion that comes into contact with the FPC and a wrist-shaped lock portion that prevents the FPC from coming off are formed. Thus, the shield has a composite function of locking the FPC in addition to the shield.

[Prior patent documents]

[Patent Literature]

[Patent Document 1]

Japan Special Open 2005-129490

[Patent Document 2]

Japan Special Open 2008-052993

However, the connector of Patent Document 1 or Patent Document 2 has electrical and mechanical problems. The metal cover (shield plate) of Patent Document 1 and Patent Document 2 is formed by cutting a part of the top plate portion covering the upper surface of the casing, and this portion becomes a hole portion. This will make the electrical shielding incomplete and mechanically reduce the strength of the metal casing.

The present invention has been made in view of such circumstances, and an object thereof is to provide an electrical connector for a circuit board, which is provided with a metal cover, which does not cut the metal cover and completely covers the upper surface of the casing, and does not have a shielding function and mechanical strength. Reduced, and has a part for achieving other functions as a component, reducing the number of parts, reducing costs, increasing strength, and simplifying assembly.

An electrical connector for a circuit board according to the present invention includes: a metal signal terminal, a housing of an electrically insulating material in which a plurality of the signal terminals are arranged and arranged, and an opening from which an openable conductor can be inserted into an opening of the housing The position is a movable member that moves the flat conductor against the closed position of the contact portion of the signal terminal, and a metal cover that is attached to the housing; and a circuit board is mounted on the lower surface of the housing.

In the electrical connector for a circuit board, the metal cover having the shielding function and other functions does not reduce the shielding function and the mechanical strength, and is a problem of one member, and the following first to third inventions are used. solve. According to a first aspect of the invention, the shield portion and the ground terminal portion are formed as one member, and in the second invention, the shield portion and the locking arm portion for preventing the fall-off of the flat conductor are formed as one member, and the third invention is to flatten the shield portion and the support. The movable member for pressing the type member is fixed to the fixing portion of the circuit board as one member.

<First invention>

According to a first aspect of the invention, in the electrical connector for a circuit board, the metal cover has a shield portion and a ground terminal portion as one member, and the shield portion includes an upper shield portion that covers an upper portion of the case, a side shield portion that is bent at both ends in the terminal arrangement direction and covers a side portion of the casing; the ground terminal portion is bent from a side shield portion of the shield portion toward an inner side in a terminal arrangement direction, or from an upper shield portion The front or rear of the casing is bent, and in a state of being coupled to the side shield portion or the upper shield portion, a plate surface at right angles to the terminal array direction is formed.

According to the first aspect of the present invention, the shield portion including the upper shield portion and the side shield portion covering the casing and the ground terminal portion are formed as one member. The ground terminal portion is formed, for example, at both ends in the terminal arrangement direction of the shield cloth from the shield portion toward the inner side in the terminal arrangement direction. Therefore, it is not necessary to cut a part of the shield portion in order to form the ground terminal portion. The shield portion covers the upper portion and the side portion of the casing without a gap. Therefore, the electrical shielding function is not lowered, and the mechanical strength is not lowered. Since the shield portion and the ground terminal portion are integrated through the bent portion, the strength of the entire metal cover is further improved.

The ground terminal portion formed integrally with the shield portion is formed as a plate surface at right angles to the terminal arrangement direction, and a signal terminal close to the end portion can be provided in the terminal arrangement direction, and the ground terminal is located in the same direction. Since the size is such a thickness, the size of the connector in the terminal arrangement direction is not increased because the ground terminal is provided.

In the present invention, the ground terminal portion may be formed to be bent toward the inner side in the terminal arrangement direction from the side shield portion of the shield portion at a lower portion of the casing, for example, along the lower surface of the casing.

In the present invention, the ground terminal portion may be formed with a ground contact portion for improving the contact pressure with the flat conductor pressed by the movable member at the closed position. In this case, the ground terminal portion does not have to be grounded only by the ground contact portion, and the corresponding ground portion of the flat conductor is also grounded.

In the present invention, there is further provided a soldering fixing portion which can bring the metal cover into contact with a corresponding portion of the circuit board, and the shield portion serves as a member. Thereby, the metal cover portion has only the shield portion and the ground terminal portion, and also has the solder fixing portion as a single member.

In the present invention, the metal cover is bent from the shield portion on the lower surface side of the casing to form a locking arm portion of the plate surface parallel to the plate surface of the signal terminal, and the shield portion serves as a member; The arm portion is formed with a locking projection that is locked to the locked portion of the flat conductor in the longitudinal direction of the flat conductor. Thereby, the metal cover not only has the shield portion and the ground terminal portion, but also has a locking arm portion for preventing the flat type conductor from coming off, and together serves as one member.

Further, in the present invention, the solder fixing portion that allows the metal cover to be in surface contact with the corresponding portion of the circuit board is bent from the shield portion toward the lower surface side of the case to form a plate surface parallel to the plate surface of the signal terminal. The locking arm portion is provided as a member together with the shield portion; in this case, the locking arm portion is formed with a locking projection that is locked with the locked portion of the flat conductor in the longitudinal direction of the flat conductor. .

<Second invention>

According to a second aspect of the invention, a metal cover includes a shield portion and a locking arm portion as one member, and the shield portion includes an upper shield portion that covers an upper portion of the housing and is bent at both ends in a terminal arrangement direction. a side shield portion covering a side portion of the housing; the locking arm portion is bent from a side shield portion of the shield portion toward an inner side in a terminal arrangement direction, or is bent downward from an upper shield portion along a front or rear side of the housing portion a plate surface that is perpendicular to the terminal arrangement direction is formed in a state of being coupled to the side shield portion or the upper shield portion; and the lock arm portion is formed with a flat conductor in a longitudinal direction of the flat conductor. A locking projection that is locked by the locking portion.

<Third invention>

According to a third aspect of the invention, a metal cover includes: a shield portion and a shaft support portion; and the shield portion includes an upper shield portion that covers an upper portion of the case and is bent at both ends in a terminal arrangement direction, and the housing is a side shield portion that is covered by the side portion, and the shaft support portion supports the side shield portion at a shaft portion formed at both ends of the movable member.

As described above, according to the present invention, the metal casing is attached to the casing, and the metal casing allows the upper shield portion to be integrally covered without forming a notch or the like on the upper portion of the casing, and is bent toward the lower portion of the casing, and selectively has: Since the ground terminal portion, the fixing portion, and the other portion of the locking arm portion serve as one member, the electrical shielding effect is improved and the mechanical strength is improved. In addition to the shield, the other parts are combined as one member, so that the number of parts is reduced, the cost is lowered, and the effect of making assembly simple is also obtained.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view showing a connector according to an embodiment of the present invention and a flat conductor for connection therewith.

In Fig. 1, reference numeral 1 is a connector of the present embodiment, and reference numeral F is a flat type conductor connected to the connector 1. The connector 1 has a housing 10 made of an electrically insulating material, a plurality of signal terminals 20 made of a metal plate held by the housing 10, and a movable unit 8 for pressing the connected flat conductor F to the signal terminal 20. The member 30 and the metal cover 40 made of a metal plate attached to the casing 10.

In the flat conductor F, for example, a corresponding circuit portion that comes into contact with each terminal 20 is formed on the lower surface of the flexible sheet, and a reinforcing sheet F1 is attached to the upper surface of the tip end portion of the portion inserted into the connector 1. The flat conductor is formed with a locking recess F2 that is locked to the locking arm portion of the connector and that is a locked portion for preventing the flat conductor from coming off, on the side edge of the portion where the reinforcing sheet F1 is provided.

The casing 10 is provided with two kinds of signal terminals 20 (20A and 20B) which maintain the shape of the flat plate surface of the metal plate at a predetermined interval in the direction of the plate surface at right angles. As shown in FIGS. 2(A) and 2(B), the casing has a cross section perpendicular to the surface of the signal terminal at the individual positions of the two types of signal terminals 20A and 20B, and is formed through the cross section. The space in the front-rear direction (the left-right direction in FIGS. 2(A) and (B)) has the upper wall 12 and the lower wall 13. The rear portion 12 (the right portion of FIGS. 2A and 8B) is notched to form a space 14 that is open upward, and a movable member 30 to be described later is disposed in the space 14.

Terminal insertion grooves 15 and 16 extending in the front-rear direction are formed on the respective inner faces of the upper wall 12 and the lower wall 13 of the casing 10. The groove width of the terminal insertion grooves 15 and 16 (the width in the groove at right angles to the paper surface in Fig. 2(A) and Fig. 2(B)) is substantially the same as the thickness of the signal terminal, so that the signal terminal can be inserted and supported. size of. The terminal insertion grooves 15 and 16 are inserted into the grooves 15 and 16 at the same position in the terminal arrangement direction to support one signal terminal. The two types of signal terminals 20A, 20B are inserted into the grooves 15, 16 with respect to the above-mentioned terminals, for example, alternately pressed. As shown in Fig. 2 (A) and (B), one type of signal terminal 20A and the other type of terminal 20B are press-fitted from the right side and the left side with respect to the terminal insertion grooves 15 and 16, respectively. In order to hold the terminal more surely, the end portion of the lower wall 13 is made thin at the terminal insertion start side, and the fixing portion 16A for fixing the signal terminal is formed there.

As shown in Fig. 2 (A) and (B), the two types of signal terminals 20A and 20B are formed in a horizontal H shape, and have upper wrist portions 21A and 21B, lower wrist portions 22A and 22B, and two wrist portions. Connecting portions 23A and 23B. The upper arm portions 21A and 21B have projecting pressing portions 24A and 24B on the distal end side (the left end side in the drawing), and have concave or immersed pressure receiving portions 25A and 25B on the rear end side. The pressure receiving portions 25A and 25B are portions that receive the upward force from the cam portion of the movable member 30 to be described later. When the force is received, the upper arm portions 21A and 21B are pivoted by the elastic connecting portions 23A and 23B. In the lever shape, the pressing portions 24A and 24B are displaced downward, and the pressing portions 24A and 24B press the flat conductor downward. The upper arm portion 21A of one of the signal terminals 20A extends longer toward the front than the upper arm portion 21B of the other signal terminal 20B, so that the pressing portion 24A is located further forward than the pressing portion 24B. On the other hand, the pressure receiving portions 25A and 25B are at the same position in the front-rear direction. The upper arm portions 21A and 21B are pressed into the bottom surface of the terminal insertion groove 15 at the upper edges of the connection portions 23A and 23B, and are inserted at the terminals in order to incline the connection portions 23A and 23B at the fulcrum. A slight gap is formed between the groove 15 and the opposite inner surface of the groove.

The lower arm portions 22A and 22B are received in the terminal insertion groove 16 of the lower wall 13. In one of the signal terminals 20A, the lower arm portion 22A has a portion extending forward from the connecting portion 23A on the distal end side to have elasticity in the vertical direction, and has a projecting contact portion 26A at the distal end thereof. The portion where the connecting portion 23A extends rearward has a connecting portion 27A and a fixed portion 28A on the rear end side. The lower portion of the connecting portion 27A extending outside the casing is at a position in contact with the circuit board for soldering with the corresponding circuit portion of the circuit board. The fixed portion 28A is formed in a groove shape to form an inner edge of the connecting portion 27A, and is fitted to the fixing portion 16A of the lower wall 13 of the casing 10. A locking convex portion 29A is formed at an upper edge of a portion between the connecting portion 27A and the connecting portion 23A, and a front portion thereof is formed when the cam portion of the movable member 30 rotates together with the leading edge of the locking convex portion 29A. a concave support portion 29A-1 for supporting the cam portion.

In the other signal terminal 20B, the front end of the portion of the lower arm portion 22B that extends forward relative to the connecting portion 23B has a connecting portion 27B and a fixed portion 28B outside the casing. With respect to one of the above-described terminals 20A, the connection portion 27B is provided at the front end opposite to the position of the fixed portion 28B, and the form and function are the same as those of the signal terminal 20A of one of the above, and the connection portion 27B is soldered to the circuit substrate. The fixed portion 28B is fitted and fixed to the fixing portion 16B of the lower wall 13 of the casing 10. In the lower arm portion 22B, a protruding contact portion 26B is provided between the connecting portion 23B and the connecting portion 27B at substantially the same position as the pressing portion 24B in the front-rear direction. Further, the lower arm portion 22B is formed with a support portion 29B for supporting the cam portion when the cam portion of the movable member 30 is rotated, on the linear upper edge of the portion extending rearward of the coupling portion 23B.

In order to press the flat conductors toward the contact portions 26A and 26B of the signal terminals 20A and 20B, the pressing portions 24A and 24B of the upper arm portions 21A and 21B are displaced downward so as to press the pressure receiving portions 25A and 25B upward. The movable member 30 that has been lifted is formed of the same electrical insulating material as the casing, and has an operation portion 31 and cam portions 32A and 32B. The movable member 30 is disposed in the space 14 at the rear of the casing 10, and is formed at a position corresponding to each of the signal terminals 20A and 20B in the terminal arrangement direction to allow the rear portions of the upper arm portions 21A and 21B of the signal terminals 20A and 20B to enter. The slit-shaped groove portions 31A and 31B are provided with block-shaped cam portions 32A and 32B that connect the inner wall surface of the groove in the groove portions 31A and 31B. In the present embodiment, when the movable member 30 is located at the open position of FIGS. 2(A) and (B), the cam portions 32A and 32B are horizontally long oblong block shapes, and the cam portions 32A and 32B are provided. The rear portions of the upper arm portions 21A and 21B are housed in the groove portions 31A and 31B between the groove bottoms of the groove portions 31A and 31B. The movable member 30 is rotatable about the cam portions 32A and 32B, and as shown in FIGS. 2(A) and 2(B), the rotary member 30 is rotated 90 degrees in the clockwise direction from the open position in the longitudinal position. The reciprocating rotation operation is performed between the closed positions in the horizontally long posture. In the posture of the open position shown in FIGS. 2(A) and (B), the movable member 30 is moved upward from the space 14 of the casing as the operation portion 31, and the operation portion 31 is rotated. Operating force. When the cam portions 32A and 32B are rotated toward the closed position in a state supported by the support portions 29A-1 and 29B of the signal terminals 20A and 20B, the cam portions 32A and 32B are changed from the horizontally long state to the vertically long state, and the signal terminals 20A and 20B are provided at the upper edges thereof. The pressure receiving portions 25A and 25B are lifted upward. The upper arm portions 21A and 21B of the signal terminals 20A and 20B are tilted in a lever shape with the connection portions 23A and 23B as fulcrums as described above, and the flat conductors are pressed downward by the pressing portions 24A and 24B, so that the flat type conductor and the signal terminal 20A are pressed. The contact pressure of the contact portions 26A and 26B of 20B is increased.

The metal cover 40 attached to the casing 10 is formed by bending a metal plate to an outer shape as shown in Fig. 3 (A) and (B). The metal cover 40 integrally includes, as one member, a shield portion 41 having an upper shield portion 42 and a side shield portion 43, a solder fixing portion 44 bent inward from the side shield portion 43 toward the terminal arrangement direction, and The ground terminal portion 45 is bent upward from the solder fixing portion 44 and has a plate surface parallel to the side shield portion 43, that is, parallel to the signal terminals 20A and 20B. The upper shield portion 42 has a flat surface that is in close contact with the upper surface of the casing 10, and the side shield portion 43 is located at a side portion of the casing 10.

The upper shield portion 42 has a rectangular shape in a flat surface, and a mounting notch portion 42A having a semicircular and linear inner edge is formed at a central portion in the longitudinal direction (terminal arrangement direction) and at the rear edge. The mounting notch portion 42A is smaller than the width of the upper shield portion 42 in the front-rear direction, and the strength of the upper shield portion 42 or the shielding effect is lowered to a lesser extent, and is formed in a smaller area. A locking projection 42A-1 is provided on the linear inner edge of the mounting cutout portion 42A as a rear portion.

The side shield portion 43 has a front portion 43A that is partially coupled to a side end of the upper shield portion 42 in the front-rear direction, and a rear portion 43B that extends rearward from the portion. The front portion 43A is bent at a boundary with the upper shield portion 42 and extends downward. The rear portion 43B is formed by extending the front surface of the front portion 43A to form a wrist shape. A cut-in groove 43A-1 is formed in the lower edge of the front portion 43A, and a portion rearward of the cut-in groove 43A-1 is bent inward in the terminal arrangement direction, and a welded portion is formed as a portion parallel to the shield portion 42. 44. The solder fixing portion 44 has a bottom surface that is in surface contact with the surface of the circuit board, and is soldered and fixed to a corresponding portion of the circuit board. The front portion 43A has a leg portion 43A-2 that is flush with the rear portion 43B at a lower edge portion that is further forward than the incision groove 43A-1. The lower end edge of the leg portion 43A-2 is located on the circuit board, and another solder fixing portion for assisting the fixing of the circuit board is formed in the same manner as the above-described solder fixing portion 44. Soldering and fixing to the circuit board may be one of the solder fixing portion 44 or the leg portion 43A-2. In the rear portion 43B of the side shield portion 43, the lower end side of the rear end side is cut into a segment shape to form the shaft support portion 43B-1. When the movable member 30 to be described later has a rotation shaft at both ends in the terminal arrangement direction, the shaft support portion 43B-1 accommodates the rotation shaft and rotatably supports it.

The ground terminal portion 45 is formed in the same horizontal H shape as the signal terminals 20A and 20B. The ground terminal portion 45 is coupled to the solder fixing portion 44 at a front portion thereof. The ground terminal portion 45 will be described later.

From the viewpoint of mounting the metal cover 40, the above-described housing 10 will be described again. As shown in Fig. 4 (A) and (B) of a partially enlarged perspective view of the connector 1 of Fig. 1 as seen from the rear, the casing 10 has a metal casing in which the ground terminal portion 45 of the metal casing 40 is inserted. The groove 17 and the projection 18 for locking with the mounting notch 42A of the shield portion 42 are held. The metal cover holding groove 17 is formed in the same groove shape as the terminal insertion grooves 15 and 16 in a relationship in which the ground terminal 45 is formed in a shape similar to the signal terminals 20A and 20B.

The metal cover holding groove 17 is formed in the terminal arrangement range, in other words, outside the range in which the terminal insertion grooves 15 and 16 are formed, as shown in Fig. 4 (A) and (B), so that the ground terminal portion 45 is formed. The board faces are located on a face parallel to the board of the signal terminals held by the terminal insertion grooves 15, 16. The protrusion 18 provided on the upper surface of the casing 10 is provided at a position where the mounting notch 42A of the metal casing 40 is fitted when the metal casing 40 is attached to the casing 10 from the front. The locking projection 42A-1 formed at the inner edge of 42A bites into the side surface of the projection 18. Thereby, the upper shield portion 42 having a long terminal arrangement direction is prevented from floating upward from the upper surface of the casing 10. When the metal cover 40 is attached to the casing 10, the ground terminal portion 45 is inserted into the metal casing holding groove 17 of the casing 10.

The ground terminal portion 45 inserted into the metal casing holding groove 17 is inserted into the metal casing holding groove 17 of the corresponding casing 10 from the front as shown in Figs. 5(A) and (B), where it is placed. maintain. The metal cover holding groove 17 is formed substantially in the same manner as the terminal insertion grooves 15 and 16 of FIG. 2(B), and is different from the terminal insertion grooves 15 and 16 in the case of the housing 10. The upper wall 12 and the lower wall 13 are in the front notch. The ground terminal portion 45 is formed in a horizontal H shape similar to the signal terminal 20B of FIG. 2B, and has an upper arm portion 46, a lower arm portion 47, and a connecting portion 48. Similarly to the signal terminal 20B, the upper arm portion 46 has a pressing portion 49 on the distal end side and a pressure receiving portion 50 on the rear end side. Similarly to the signal terminal 20, the lower arm portion 47 has a ground contact portion 51 at the intermediate portion and a support portion 53 for supporting the cam portion of the movable member 30 on the rear end side. In the present embodiment, the upper wall notch is made to secure the space in which the flat conductor F is slid to the locking projection 52 when the locking recess F2 of the flat conductor F is locked to the locking projection 52 to be described later. . Therefore, the embodiment in which the locking projection 52 is not described later may not be a notch of the upper wall.

As shown in FIGS. 5(A) and (B), the movable member 30 is formed with a groove portion 31C that allows the upper arm portion 46 to enter, and a block-shaped cam portion 32C is provided in the groove portion 31C. The shape of the groove portion 31C and the cam portion 32C is the same as that of the groove portions 31A and 31B and the cam portions 32A and 32B of the signal terminals 20A and 20B. When the movable member 30 is rotated toward the closed position, similarly to the case of the signal terminals 20A and 20B, the upper arm portion 46 has the connecting portion 48 as a fulcrum and is inclined so that the pressing portion 49 is displaced downward.

The lower arm portion 47 is connected to the curved region via the above-described welding fixing portion 44 at the lower edge portion of the distal end side, and a locking projection 52 that protrudes upward is formed at the upper edge. The locking projection 52 projects into a locking recess F2 as a locked portion, and the locking recess F2 is formed in a flat conductor F connected to the connector 1 shown in Fig. 1 for preventing flat type The conductor F is detached. From this point of view, the lower arm portion 47 having the locking projection 52 also functions as a locking wrist.

The connector of this embodiment functions in the following manner.

(1) First, when the connector is assembled, the signal terminal 20A shown in Fig. 2(A) is inserted from the right into the terminal insertion grooves 15, 16 in a state where the movable member 30 and the metal cover 40 are not attached. The fixing portion 16A is fixed to the fixing portion 16A of the casing 10, and the signal terminal as shown in Fig. 2(B) is inserted from the left to the terminal insertion grooves 15, 16 to be fixed to the casing by the fixing portion 28B. The fixing portion 16B of the body 10. The signal terminal 20A and the signal terminal 20B are often interactively arranged, but may be mixed in different orders depending on the requirements.

(2) Next, the movable member 30 is attached from the rear in the state of the open position shown in Figs. 2(A), (B) and 5(A). The cam portions 32A, 32B of the movable member 30 are positioned to be in contact with the support portions 29A-1, 29B of the signal terminals 20A, 20B.

(3) Then, the metal casing 40 is attached to the casing 10 from the front. The upper shield portion 42 and the side shield portion 43 of the shield portion 41 constituting the metal casing 40 are placed in surface contact with the upper surface and the side surface of the casing 10, respectively, and the ground terminal portion 45 is inserted into the metal casing holding groove 17 Inside. The upper shield portion 42 has a mounting portion in which the notch portion 42A is fitted to the upper surface of the casing 10, and the locking projection 42A-1 of the inner edge of the mounting notch portion 42A bites into the side surface of the projection 18, and the upper portion The position of the shield portion 42 is firmly fixed. On the other hand, the ground terminal portion 45 inserted into the metal cover holding groove 17 has the upper edge and the lower wrist of the upper arm portion 46 in the range of the connecting portion 48 in the front-rear direction as shown in Fig. 5(A). The lower edge of 47 is pressed and held between the upper and lower groove bottoms of the metal cover holding groove 17. On the lower edge of the lower arm portion 47, a locking projection that prevents falling off is provided, and the fall-off prevention becomes stronger.

(4) The connector 1 assembled in this manner is disposed on a predetermined circuit board when in use. When the connector 1 is placed on the circuit board, the connection portions 27A and 27B of the signal terminals 20A and 20B, the solder fixing portion 44 of the metal cover 40, and the leg portion 43A-2 are in surface contact with the corresponding portions of the circuit board. Then, welding is performed to the corresponding portion, and the signal terminals 20A and 20B are electrically connected to the corresponding circuit and fixed, and the solder fixing portion 44 and the leg portion 43A-2 of the metal cover 40 are grounded and fixed.

(5) Then, the flat conductor F shown in Fig. 1 is inserted into the connector 1, and the movable member 30 is rotated toward the closed position. By the rotation toward the closed position, the cam portions 32A, 32B, and 32C of the movable member 30 are in a vertically long state, and the pressure receiving portions 25A and 25B of the signal terminals 20A and 20B and the pressure receiving portion 50 of the ground terminal portion 45 are directed toward each other. Pressing upward, the upper arm portions 21A and 21B of the signal terminals 20A and 20B and the upper arm portion 46 of the ground terminal portion 45 are inclined so that the pressing portions 24A, 24B, and 49 of the distal end are displaced downward by the above-described lever principle. The portions 24A, 24B, and 49 press the flat conductor F downward. The flat type conductor F pressed downward is used to increase the contact pressure between the signal terminals 20A, 20B and the contact portions 26A, 26B. The ground contact portion 51 is in contact with the ground portion of the flat conductor, and the locking projection 52 of the ground terminal portion 45 is inserted into the locking recess F2 of the flat conductor F to prevent the flat conductor F from falling off. Further, since the flat conductor F is pressed downward by the pressing portion 49 of the ground terminal portion 45, the flat conductor F does not float, and the locking projection 52 does not escape from the locking recess F2.

In the embodiment shown in FIGS. 1 to 5, the metal cover integrally includes, in addition to the shield portion, a ground terminal portion, a locking arm portion, and a welded fixing portion as one member, and in the present invention, The metal cover has a shield portion and other portions and has a meaning as a member. It is not necessary to combine the ground terminal portion, the locking arm portion, and the solder fixing portion with the shield portion, and may have at least one of them and the shield portion. As a component. Embodiments of the modifications are shown below.

In Figs. 6(A) and (B), an example in which the metal casing 45 has only the shield portion 41 and the locking arm portion 45' is shown. In FIGS. 6(A) and 6(B), the shield portion 41 has the upper shield portion 42 and the side shield portion 43 (not shown in FIG. 6) shown in FIG. 3, and the side shield portion 43 is provided. The lower edge is curved to form the above-described locking arm portion 45'. In this respect, the locking arm portion 45' is similar to the ground terminal 45 shown in Fig. 5. However, the locking arm portion 45' does not have a portion corresponding to the ground contact portion 51 of the ground terminal 45. Then, even if the movable member 30 is rotated from the open position of Fig. 6(A) to the closed position of Fig. 6(B), the locking arm portion 45 does not come into contact with the ground circuit portion under the flat conductor F. When the movable member 30 comes to the closed position of Fig. 6(B), the locking projection 52 enters the locking recess F2 of the flat conductor F, preventing the flat conductor F from coming off, and the pressing portion 49 prevents the flat conductor F from floating. . At this time, the pressing portion of the upper arm portion may be brought into contact with the ground circuit portion.

In the embodiment of Figs. 7(A) and (B), the metal casing 40 has only the shield portion 41 and the ground terminal 45" as one member. Compared with the ground terminal portion 45 of Fig. 5, the difference is different. The ground terminal 45" of Figs. 7(A) and (B) does not have a locking projection. That is, the ground terminal 45" of Figs. 7(A) and (B) does not have a function as a locking arm, and has only a function as a ground terminal. The movable member 30 is allowed to be in the open position of Fig. 7(A). When the insertion of the flat conductor F is turned to the closed position of Fig. 7(B), the ground contact portion 51 comes into contact with the ground circuit portion of the flat conductor F. In this case, the pressing portion 49 also presses the flat conductor from above. F, the contact pressure between the flat conductor F and the ground contact portion 51 is increased to make the contact more reliable.

In the embodiment of Fig. 8, the metal casing 40 has a shield portion 41, a welded fixing portion 44, and a side shield portion 43. In the eighth embodiment, the upper shield portion 42 located on the upper surface of the casing 10 is formed at a position further outward than the upper shield portion 42 in the terminal arrangement direction, so that the welded fixing portion (not shown) is not shown. 44. Similarly to the case of FIG. 3, the lower edge of the front portion 43A of the side shield portion 43 is curved. The rear portion 43B extends rearward from the front portion 43A, and a shaft support portion 43B-1 which is cut into a segment shape is formed in the rear portion 43B, and a rotation shaft 33 provided on the movable member 30 is supported at both ends in the terminal arrangement direction.

In the above-described embodiment, the electrical connection between the flat conductor F and the signal terminals 20A and 20B is provided by a corresponding circuit portion provided on the lower surface of the flat conductor F and a contact portion 26A with the signal terminals 20A and 20B. The contact of 26B (hereinafter referred to as "lower contact connection") is performed, and the connection method is not limited to this.

For example, a corresponding circuit portion may be provided on the upper surface of the flat conductor F, and the corresponding circuit portion may be brought into contact with the pressing portions 24A and 24B of the signal terminals 20A and 20B (hereinafter referred to as "upper contact connection"). A corresponding circuit portion may be provided on the upper surface and the lower surface of the flat conductor F, and may be performed by both the upper contact connection and the lower contact connection. The upper contact connection and the lower contact connection may be performed alternately in the terminal arrangement direction.

This connection method can also be considered in the same manner for the ground contact.

The metal casing 40 of the embodiment shown in Figs. 1 to 8 is in the form of a connector having a terminal having a so-called backflip type, and the signal terminal has an upper wrist portion and a lower wrist portion, and the two wrist portions are The intermediate position in the longitudinal direction is connected by the connecting portion, and the flat conductor is accommodated between the two wrist portions in front of the connecting portion, and the upper arm is tilted by the action of the movable member behind the connecting portion. On the other hand, the front end portion of the wrist portion presses the flat conductor toward the contact portion of the front end of the lower wrist portion. In contrast, as a ninth drawing of another embodiment, it is shown that the metal casing of the present invention is also applicable to a connector having a front flip terminal. In Fig. 9, the number of the portion corresponding to the form of Fig. 1 to Fig. 8 is a number of 30 from the figure numbers of Figs. 1 to 8.

In FIGS. 9(A) and (B), the metal cover 70 has a shield portion 71 and a ground terminal portion 75. The ground terminal portion 75 has a position adjacent to the signal terminals at both ends in the direction in which the signal terminals (not shown) are arranged, and has an upper arm portion 76, a lower arm portion 77, and a connecting portion 78 that connects the two wrist portions. The connection portion 78 is different from the first to eighth embodiments in that the upper arm portion 76 and the lower arm portion 77 are coupled to the rear portion of the two. The connecting portion 78 is bent at the lower edge thereof and is coupled to the lower edge of the side shield portion (not shown). A protruding ground contact portion 81 is formed at a continuous end portion of the lower arm portion 77.

On the other hand, the signal terminals arranged between the ground terminal portions 75 at both ends of the terminal array direction are formed by maintaining a flat plate surface, and are disposed in parallel with the plate surface of the ground terminal portion 75, and have the ground terminal portion 75 The same upper and lower wrists. The upper arm has a rotation guide that guides the following movable member.

The flat conductor F is inserted between the upper arm portion 76 and the lower arm portion 77 and between the upper arm portion and the lower arm portion of the signal terminal from the space of the housing that is open to the left.

In Fig. 9(A), the movable member 60 is disposed in the front opening space of the casing and extends upward, and the operation portion 61 is formed in the extending portion. The movable member 60 has a to-be-steered portion (not shown) guided by the rotation guide portion of the signal terminal, and a notch portion 61B is formed at a position corresponding to the ground terminal portion 75. The movable member 60 is rotatable between the open position of the ninth diagram (A) and the closed position of the ninth diagram (B), centering on the to-be-guided portion.

In the connector of this embodiment, when the movable member 60 is in the open position as shown in Fig. 9(A), the flat conductor F is inserted between the upper arm portion 76 and the lower arm portion 77 of the ground terminal portion 75, And the flat conductor F is inserted between the upper wrist portion and the lower wrist portion of the signal terminal, and the movable member 60 is rotated toward the closed position of FIG. 9(B). When the movable member 60 presses the flat type conductor, the signal terminal and the ground terminal 75 are brought into contact with the corresponding circuit portions with contact pressure. The flat conductor F is electrically connected to the circuit board via the signal terminal, and is grounded to the circuit board via the ground terminal portion 75. Since the ground terminal 75 and the shield portion 71 are formed as one member, the shield portion 71 is also grounded.

In the above-described embodiment, the ground terminal portions 45, 45', and 45" are formed by bending the side shield portion 43 of the shield portion 41 from the position of the lower portion of the casing 10 toward the inner side in the terminal arrangement direction. The manner of bending is not limited to this.

For example, the side shield portion may be formed such that a surface parallel to the front surface of the casing is formed at a position of the front portion of the casing 10, or a surface parallel to the rear surface of the casing is formed at a position of the rear portion. It may be formed by bending inward in the terminal arrangement direction, or may be formed from the shield portion 42 so as to form a surface parallel to the front surface of the casing at the front portion of the casing 10 or at a position at the rear portion. The surface parallel to the rear of the casing is formed by bending downward.

In the above-described embodiment, the signal terminals 20A and 20B are so-called punching terminals formed by maintaining a flat plate surface of the metal plate, and may be so-called curved terminals in which the plate surface is curved and elastic.

10. . . case

20A, 20B. . . Signal terminal

26A, 26B. . . Contact

30. . . Movable member

40. . . Metal cover

41. . . Shield

42. . . Upper shield

43. . . Side shield

44. . . Welding fixture

45, 45', 45"... ground terminal

51. . . Ground contact

52. . . Locking projection

60. . . Movable member

70. . . Metal cover

71. . . Shield

75. . . Ground terminal

82. . . Ground contact

F. . . Flat conductor

F2. . . Blocked part

Fig. 1 is a perspective view of an electrical connector according to an embodiment of the present invention and a flat conductor to be connected thereto, as seen from the front before contact.

Fig. 2 is a cross-sectional view of the connector of Fig. 1 in which two kinds of signal terminals are arranged, viewed in the direction in which the signal terminals are arranged, (A) is a positional cross section of a signal terminal, and (B) is another signal. The positional cross section of the terminal is a state in which the movable member is in the open position.

Fig. 3 is a perspective view of the metal casing to which the connector of Fig. 1 is attached, (A) showing a state as viewed from above, and (B) showing a state viewed from below.

Fig. 4 is a partially enlarged perspective view of the connector of Fig. 1 viewed from the opposite direction to the case of Fig. 1, that is, (A) before the metal cover is mounted, and (B) after the display is mounted.

Fig. 5 is a cross-sectional view showing the connector of Fig. 1 in a positional cross section of the ground terminal portion corresponding to the VV of Fig. 3 in the terminal array direction, and Fig. 5 is a view showing the state in which the movable member is in the open position ( B) is the state displayed in the closed position.

Fig. 6 is a cross-sectional view showing a modification of the connector of Fig. 1, which is a cross section at the same position as the cross-sectional position of Fig. 5, wherein (A) shows a state in which the movable member is in the open position, and (B) shows in the state in which the movable member is in the open position. Turn off the status of the location.

Fig. 7 is a cross-sectional view showing another modification of the connector of Fig. 1, which is a cross section at the same position as the cross-sectional position of Fig. 5, wherein (A) shows a state in which the movable member is in the open position, and (B) shows The state of the closed position.

Fig. 8 is a cross-sectional view showing another modification of the connector of Fig. 1, which is a cross-sectional view of the fixing portion, showing a state in which the movable member is in the open position.

Fig. 9 is a cross-sectional view showing the electrical connector according to another embodiment of the present invention, in a terminal arrangement direction and a positional cross section at the ground terminal portion, wherein (A) is a state in which the movable member is in the open position, and (B) is a display. The state of the closed position.

40. . . Metal cover

41. . . Shield

42. . . Upper shield

42A. . . Mounting gap

42A-1. . . Locking projection

43. . . Side shield

43A. . . Front section

43A-1. . . Cut into the ditch

43A-2. . . Foot

43B. . . rear

43B-1. . . Shaft support

44. . . Welding fixture

45. . . Ground terminal

Claims (6)

An electrical connector for a circuit board, comprising: a metal signal terminal, a housing of an electrically insulating material for arranging the plurality of signal terminals, and an opening position for inserting the flat conductor into an opening of the housing; a movable member that moves the flat conductor to a closed position of the contact portion of the signal terminal, and a metal cover that is attached to the housing; and a circuit board mounted on the lower surface of the housing, the metal cover has a metal cover The shield portion and the ground terminal portion are one member; the shield portion includes an upper shield portion that covers an upper portion of the housing, and a side portion that is bent at both ends in the terminal arrangement direction and covers a side portion of the housing. a shield portion; the ground terminal portion is bent from a side shield portion of the shield portion toward an inner side in a terminal arrangement direction, or is bent downward from an upper shield portion along a front surface or a rear surface of the housing, and is opposite to the side shield portion or the upper portion The state in which the shield portion is coupled is formed as a plate surface at right angles to the terminal arrangement direction, and the ground terminal portion has a flat shape for pressing against the movable member in the closed position. Ground contact pressure of the contact portion of the conductor increase. The electrical connector for a circuit board according to the first aspect of the invention, wherein the ground terminal portion is formed by bending from the side shield portion of the shield portion toward the inner side in the terminal arrangement direction at a lower portion of the casing. The electrical connector for a circuit board according to claim 1 or 2, further comprising: a solder fixing portion that allows the metal cover to be in surface contact with a corresponding portion of the circuit substrate, and the shield portion serves as a member. The electrical connector for a circuit board according to claim 1 or 2, further comprising: the metal cover is bent from the shield portion on the lower surface side of the casing to form a locking of the plate surface parallel to the plate surface of the signal terminal The wrist portion and the shield portion serve as one member; and the lock arm portion is formed with a lock projection that is locked to the locked portion of the flat conductor in the longitudinal direction of the flat conductor. The electrical connector for a circuit board according to claim 1 or 2, further comprising: a solder fixing portion that allows the metal cover to be in surface contact with a corresponding portion of the circuit substrate, and a lower surface side of the housing from the shield portion a locking wrist portion which is formed as a plate surface parallel to the plate surface of the signal terminal, together with the shield portion as a member; the locking arm portion is formed with a flat conductor in the longitudinal direction of the flat conductor A locking projection that is locked by the locking portion. The electrical connector for a circuit board according to claim 1 or 2, wherein a protrusion is provided on an upper portion of the casing, and an upper shield portion of the metal casing has a notch portion at a position corresponding to the protrusion, and the metal The cover prevents the shield portion from floating upward by fitting the attachment notch portion to the projection.