JP4995861B2 - Circuit board electrical connector - Google Patents

Description

  The present invention relates to an electrical connector for a circuit board that is attached to a circuit board and has a lock member that prevents the flat conductor from coming off when the flat conductor is connected.

  Many types of circuit board electrical connectors are connected to a flat conductor such as an FPC. Such a connector has, for example, a locking member that engages with a locked portion that is provided in an ear shape on a side edge of the flat conductor so that the flat conductor does not come out carelessly after connection.

  Patent Document 1 discloses a horizontal H-shaped locking member that is made while maintaining a flat plate surface of a metal plate and in which an upper arm portion and a lower arm portion are connected by a connecting portion. The lower arm portion is fixedly held by the housing, and the upper arm portion can be elastically displaced so as to tilt like a lever with the connecting portion as a fulcrum. The upper arm portion has a lock projection on the front portion on the flat conductor insertion side and a pressure receiving portion pressed on the rear portion by the cam portion of the rotating movable member. When the pressure receiving portion is lifted by the cam portion, the lock projection is displaced downward by the elastic displacement of the upper arm portion. The locking projection is locked to the locked portion of the flat conductor due to the downward displacement, and prevents the flat conductor from being accidentally pulled out by interfering with the locked portion in the extraction direction of the flat conductor. is doing.

JP 2005-078908

  However, in the connector of Patent Document 1, since the lock protrusion is provided on the upper arm portion that can be elastically displaced so as to tilt with the connecting portion as a fulcrum, the connected flat conductor is strongly pushed in the extraction direction. When pulled, the upper arm may be displaced in a direction away from the flat conductor due to the force received from the locked portion of the flat conductor, and the lock protrusion may be disengaged from the locked portion. The mold conductor comes off.

  Further, the lock protrusion is locked with the locked portion of the flat conductor for the first time by operating the movable member after the flat conductor is inserted into the normal position. Therefore, since the lock protrusion is provided on the upper arm as a downwardly directed protrusion, the lock protrusion is not locked to the locked portion at all immediately after the insertion of the flat conductor and before the operation of the movable member. Even if the flat conductor is arranged in the normal insertion position in the front-rear direction, if any external force is applied, it will deviate from this normal position, and even if the movable member is operated toward the closed position, the lock protrusion will not It is easy to cause a situation where the flat conductor is not locked to the locked portion. That is, so-called provisional holding in which the flat conductor is maintained in the normal position before the movable member is operated toward the closed position in order to connect the flat conductor to the terminal with contact pressure cannot be performed.

  In view of such circumstances, it is an object of the present invention to provide an electrical connector for a circuit board that reliably prevents inadvertent disconnection of a flat conductor and enables temporary holding.

  An electrical connector for a circuit board according to the present invention includes a signal terminal of a metal plate, a housing of an electric insulating material for arranging and holding a plurality of the signal terminals, and a flat conductor to an opening formed in a front portion of the housing. The movable member is movable from an open position where insertion is possible to a closed position where the flat conductor is pressed against the contact portion of the signal terminal, and a lock member which prevents the inserted flat conductor from coming off. The present invention solves the above-mentioned problems by both the following first invention and the second invention.

<First invention>
In the above-described circuit board electrical connector, in the present invention, the lock member is formed by having a flat plate surface portion of a metal plate, and the plate surface portion is formed from the housing so as to be perpendicular to the arrangement direction of the signal terminals. The lock member has an upper arm portion and a lower arm portion formed on the plate surface portion so as to extend in the front-rear direction, and the upper arm portion and the lower arm portion are formed as one member by connection via the connection portion. The flat conductor can be inserted between the front part of the upper arm part and the front part of the lower arm part in front of the connecting part, the lower arm part is fixedly held by the housing, and the upper arm part is It can be elastically displaced so as to tilt like a lever with respect to the lower arm within a plane including the surface of the plate surface portion with the connecting portion as a fulcrum, and the lock member presses the flat conductor against the front of the upper arm A pressing part is provided, facing upward on the lower arm front part of the lock member Have been set, in extraction direction of the inserted flat conductive and said flat conductive when the movable member is in the open position, 該被locking portion by rush into the engaged portion of the flat conductive The lock member has a pressure receiving portion with which the cam portion of the movable member comes into contact with the rear portion of the upper arm portion, and when the movable member moves to the closed position, the pressure receiving portion becomes the cam portion. The upper arm portion of the lock member is elastically displaced downward so as to increase the contact pressure with the flat conductor at the pressing portion, and the flat conductor is pressed downward. The flat conductor is sandwiched between the pressing part of the upper part and the upper arm part, and the interference between the locked part of the flat conductor and the lock protrusion is maintained in the extraction direction. .

  In the electrical connector for circuit board according to the present invention having such a configuration, the movable member is in the open position, and immediately after the flat conductor is inserted, the locked portion of the flat conductor is arranged from above. The locking member is positioned so as to engage with the locking protrusion provided on the lower arm of the locking member in the front-rear direction, and the lower arm is fixedly held and is not elastically displaced. Even if the conductor is simply drawn in the extraction direction, the flat conductor is not extracted unless it is lifted upward at the same time. That is, the flat conductor is temporarily held to maintain a normal position for connection with the contact portion of the signal terminal.

  Next, the movable member is moved toward the closed position in the temporarily held state. In this closed position, the movable member connects and connects the flat conductor with the contact portion of the signal terminal to ensure and maintain a predetermined connection state. When the movable member is in the closed position, the cam portion of the movable member presses the pressure receiving portion provided at the rear portion of the upper arm portion of the lock member to incline the upper arm portion and displace the pressing portion at the front portion of the upper arm portion downward. The pressing portion presses the flat conductor in the same direction by the downward displacement. Therefore, even if the flat conductor is pulled in the extraction direction and receives a force that lifts upward, the flat conductor does not float upward due to the pressing force from the pressing portion. Therefore, when the movable member is in the closed position, the flat conductor does not come out regardless of the force applied in any direction.

Keep the present invention, the signal pin has a upper arm and a lower arm portion extending linked front-rear direction by the connecting portion, the movable pressing portion and the upper arm rear to pressure the flat conductive upper arm front part downward A pressure receiving portion with which the cam portion of the member abuts, and when the movable member moves to the closed position, the pressure receiving portion is pressed by the cam portion, and the upper arm portion is elastically displaced downward, and the upper arm It is possible to press the flat conductor with the pressing portion of the portion to increase the contact pressure between the contact portion of the lower arm front portion and the flat conductor. The upper arm part and the lower arm part are the same as the lock member except that the front part of the lower arm part is a contact part. When the movable member is in the open position, the flat conductor is inserted between the front part of the upper arm part and the front part of the lower arm part. When the movable member is in the closed position, the pressure receiving part at the rear part of the upper arm part is the movable member. The upper arm portion is tilted so that the pressing portion is displaced downward with the connecting portion as a fulcrum. As a result, the pressing part presses the flat conductor to increase the contact pressure of the contact part at the front part of the lower arm part. The downward pressing force at the pressing portion of the signal terminal not only increases the contact pressure between the flat conductor and the contact portion of the signal terminal, but also presses the flat conductor downward. Contributes to preventing the lock protrusion from coming off due to the rising of the.

  In the present invention, the housing is attached with a metal shell having a shield portion that covers at least the arrangement range of the signal terminals, a part of the metal shell is formed as a lock member, and the lock member and the shield portion are integrated. It can be made into a member.

  As described above, the lock member and the shield part are formed as one metal shell, thereby reducing the number of parts and simplifying the manufacturing and assembling work compared to the case where the lock member and the shield member are individually provided. Needless to say, the presence of the connecting portion between the two can improve the strength of the member itself, and hence the holding strength of the housing.

  In the present invention, the lock member may have a ground contact portion that contacts the ground circuit portion of the flat conductor on at least one of the lower arm portion and the upper arm portion, and may also serve as the ground member. By doing so, it is not necessary to separately provide a member that contacts the ground circuit portion of the flat conductor, so that the number of parts can be reduced and the member can be simplified, and the flat conductor is provided on the upper arm portion of the lock member. As a result of being pressed by the pressing portion, the contact pressure at the ground contact portion is increased.

  In the present invention, the metal shell has a solder fixing portion that contacts the surface of the circuit board at the portion connecting the shield portion and the lock member, and the fixing portion can be soldered to the corresponding portion of the circuit board. Can be. By doing so, the part connecting the shield part and the lock member can be used as a solder fixing part, and it is not necessary to provide the solder fixing part as a separate member or at another part of the metal shell. Simplification of members can be achieved.

  In the present invention, the lock member is formed as two portions of parallel surfaces in which the plate surface portions are spaced apart from each other in the terminal arrangement direction and are connected to each other, the pressing portion at one portion and the locking protrusion at the other portion. Each can be provided.

  The plate surface portion may be positioned on a single plane so that the pressing portion and the locking projection are located at the same position in the terminal arrangement direction. When having a plate surface part and positioning the pressing part and the locking protrusion on each, the pressing part must be positioned within the range of the locked part in the front-rear direction, that is, in the insertion / extraction direction of the flat conductor. This makes it possible to more strongly prevent the flat conductor from being lifted at the locked portion by the pressing force.

<Second invention>
In the second aspect of the present invention, in the second invention, the locking member is made of a flat plate surface portion of a metal plate, and the plate surface portion is held from the housing so as to be perpendicular to the arrangement direction of the signal terminals. The locking member has an upper arm portion and a lower arm portion formed on the plate surface portion so as to extend in the front-rear direction, and the upper arm portion and the lower arm portion are connected via a connecting portion at the rear portion of each other , The flat conductor can be inserted between the upper arm portion and the lower arm portion, the lower arm portion is fixedly held by a housing, and the upper arm portion includes the surface of the plate surface portion with the connecting portion as a fulcrum. The lock member can be elastically displaced so as to tilt like a lever with respect to the lower arm portion in a plane, and the lock member is provided with a guide support portion for guiding and supporting the shaft portion of the movable member on the upper arm portion. have been projected upward in the arm portion, it is inserted when the movable member is in the open position In extraction direction of the flat conductor and the flat conductive member, it has respective lock projections to 該被locking portion and the locking by rush into the engaged portion of the flat conductive, movable member contact pressure but when moved to the closed position, the guide support is provided assay the shaft portion of the movable member, the movable member is a flat conductive by the pressing force of the reaction force from the guide support The lock protrusion of the lower arm of the lock member is positioned so as to interfere with the locked portion of the flat conductor in the front-rear direction.

  In the second invention, when the movable member moves to the closed position, the guide support portion of the upper arm portion that guides and supports the shaft portion of the movable member generates a pressing force as a reaction force against the force from the shaft portion. That is, the guide support portion functions as a pressing portion, and the pressing force is transmitted to the flat conductor via the movable member. In the first invention described above, the pressing force is directly transmitted from the pressing portion of the upper arm portion to the flat conductor, whereas in this second invention, it is indirectly transmitted to the flat conductor via the movable member. There is a feature in the point. The locking projection is the same as in the first invention. Thus, also in the second invention, the guide support portion functioning as the pressing portion and the lock projection portion combine to reliably prevent inadvertent extraction of the flat conductor.

  As described above, the present invention provides the locking projection of the locking member that is locked to the locked portion of the flat conductor on the lower arm portion that is fixedly held, and when the movable member comes to the closed position, Since the flat conductor is pressed directly downward by the pressing portion provided in the upper arm portion or indirectly by the guide support portion provided in the upper arm portion, it is inadvertent when connecting the flat conductor. Even if the unplugged output acts on the flat conductor, the locked portion remains locked on the immovable lock projection, and even if the unplugged output has an upward component, the flat conductor is pressed from above. The flat conductor is surely prevented from coming off without being lifted from the lock protrusion and being pressed by the portion. Further, when the movable member is in the open position, the flat conductor is kept inserted in the normal position by the lock protrusion, and temporary holding is possible. As described above, the connection state of the flat conductor can be stably secured at the time of connection, and the connection operation can be reliably performed while maintaining the normal position before the connection. Further, by integrating the lock protrusion, the pressure receiving portion, and the pressing portion, the number of components can be reduced, and the management of the components can be facilitated, and the manufacturing cost can be reduced accordingly.

It is the perspective view seen from the front before the contact of the electrical connector of 1st embodiment of this invention and the flat type conductor which should be connected to this. 2 is a cross-sectional view of the connector of FIG. 1 in which two types of signal terminals are arranged, as viewed in the arrangement direction of the signal terminals, where (A) is a position of one type of signal terminal and (B) is a position of another type of signal terminal. And the movable member is shown in the open position. It is a perspective view of the metal shell attached to the connector of FIG. 1, (A) has each shown the state seen from upper direction, (B). FIG. 2 is a partially enlarged perspective view of the connector of FIG. 1 as viewed from the rear, which is the opposite direction to that of FIG. 1, where (A) shows a state before attachment of the metal shell and (B) shows a state after attachment. FIG. 5 is a cross-sectional view illustrating the connector of FIG. 1, in which the cross-section is taken at the position of the lock member corresponding to VV in FIG. 3 in the terminal arrangement direction, where (A) is a movable member open position; Shows the state. It is a perspective view of the metal shell as a modification of this invention, and shows the example in which the press part and lock | rock protrusion of a lock member are formed in another plate surface part. As another modified example of the present invention, it is a perspective view of a member that does not have a shield part and in which a lock member is integrated with a solder fixing part and a support arm part. As still another modification of the present invention, it is a perspective view of a member that does not have a shield part and in which a lock member is integrated with a solder fixing part. It is sectional drawing which shows 2nd embodiment of this invention.

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

<First embodiment>
FIG. 1 is a perspective view showing a connector of a first embodiment of the present invention and a flat conductor to be connected thereto.

  In FIG. 1, reference numeral 1 denotes a connector according to the present embodiment, and reference numeral F denotes a flat conductor connected to the connector 1. The connector 1 includes a housing 10 made of an electrical insulating material, a plurality of signal terminals 20 made of a metal plate held by the housing 10, and a movable member that presses the connected flat conductor F to the signal terminals 20. 30 and a metal shell 40 made of a metal plate attached to the housing 10.

  In the flat conductor F, for example, a corresponding circuit portion that contacts each signal terminal 20 is formed on the lower surface of the flexible sheet, and the reinforcing sheet F1 is attached to the upper surface of the tip portion to be inserted into the connector 1. It has been. This flat conductor is engaged with a locking arm portion of the connector at the side edge of the portion where the reinforcing sheet F1 is provided, and is a locking recess F2 as a locked portion for preventing the flat conductor from coming off. Is formed.

  The housing 10 holds, for example, a plurality of two types of signal terminals 20 (20A and 20B) that are formed while maintaining a flat plate surface of a metal plate at predetermined intervals in a direction perpendicular to the plate surface. ing. As shown in FIGS. 2 (A) and 2 (B), the housing 10 shows a cross section in a plane parallel to the plate surface of the signal terminal 20 at each of the two types of signal terminals 20A and 20B. A space penetrating in the front-rear direction (left-right direction in FIGS. 2A and 2B) is formed, and has an upper wall 12 and a lower wall 13. The upper wall 12 has a space 14 cut out in the rear area (the right area in FIGS. 2A and 2B) and opened upward, and a movable member 30 described later is arranged in the space 14. Has been.

  Terminal insertion grooves 15 and 16 extending in the front-rear direction are formed on the inner surfaces of the upper wall 12 and the lower wall 13 of the housing 10. The groove width of the terminal insertion grooves 15 and 16 (the groove width in the direction perpendicular to the paper surface in FIGS. 2A and 2B) is substantially the same as the thickness of the signal terminal 20, and the signal terminal 20 is inserted. And it is a dimension that can be supported. The terminal insertion grooves 15, 16 support one signal terminal with a pair of upper and lower terminal insertion grooves 15, 16 located at the same position in the terminal arrangement direction. The two types of signal terminals 20A and 20B are press-fitted alternately into the terminal insertion grooves 15 and 16, for example. 2A and 2B, one type of signal terminal 20A and another type of signal terminal 20B are press-fitted into the terminal insertion grooves 15 and 16 from the right side and the left side, respectively. Yes. In order to hold the signal terminal more securely, a fixing portion 16A for fixing the signal terminal is formed by thinning the end of the lower wall 13 on the terminal insertion start side.

As shown in FIGS. 2A and 2B, the two types of signal terminals 20A and 20B have a horizontal H shape, and the upper arms 21A and 21B, the lower arms 22A and 22B, and a connection that connects both arms. Each has parts 23A and 23B. The upper arm portions 21A and 21B have projecting pressing portions 24A and 24B on the front end side (left end side in the drawing), and concave or immersive pressure receiving portions 25A and 25B on the rear end side. The pressure receiving portions 25A and 25B are portions that receive an upward force from a cam portion of the movable member 30 described later, and when receiving the force, the upper arm portions 21A and 21B support the connecting portions 23A and 23B having elasticity. And the pressing portions 24A and 24B are displaced downward, and the flat conductors are pressed downward by the pressing portions 24A and 24B. The upper arm portion 21A of one kind of signal terminal 20A extends longer forward than the upper arm portion 21B of the other signal terminal 20B, and therefore the pressing portion 24A is positioned in front of the pressing portion 24B. On the other hand, the pressure receiving portions 25A and 25B are in the same position in the front-rear direction. Although the upper arm portions 21A and 21B are pressed against the bottom surface of the terminal insertion groove 15 at the upper edges near the connection portions 23A and 23B, the connection portions 23A and 23B are inclined at the fulcrum. As described above, a slight gap is formed between the terminal insertion groove 15 and the inner surface of the opposing groove.

  The lower arm portions 22 </ b> A and 22 </ b> B are received in the terminal insertion groove 16 of the lower wall 13. In a kind of signal terminal 20A, the lower arm portion 22A has a portion extending forward from the connecting portion 23A so as to rise on the front end side, has elasticity in the vertical direction, and has a projecting contact portion 26A at the front end. The portion extending rearward from the connecting portion 23A has a connecting portion 27A and a fixed portion 28A on the rear end side. The connecting portion 27A extends to the outside of the housing and has a lower edge in contact with the circuit board and serves for solder connection with a corresponding circuit portion of the circuit board. The fixed portion 28A is formed in a groove shape so as to form the inner edge of the connecting portion 27A and is fitted to the fixing portion 16A of the lower wall 13 of the housing 10. A locking projection 29A is formed on the upper edge of the portion between the connecting portion 27A and the coupling portion 23A, and the cam portion of the movable member 30 is rotated at the front position together with the front edge of the locking projection 29A. A concave support portion 29A-1 that supports the cam portion is formed.

  In the other signal terminal 20B, the lower arm portion 22B has a connecting portion 27B and a fixed portion 28B with the front end of the portion extending forward of the connecting portion 23B outside the housing. The connection portion 27B and the fixed portion 28B are opposite to the one kind of signal terminal 20A and are at the front end, but the shape and function are the same as those of the one signal terminal 20A. The portion 27B is soldered to the circuit board, and the fixed portion 28B is fitted and fixed to the fixing portion 16B of the lower wall 13 of the housing 10. The lower arm portion 22B is provided with a projecting contact portion 26B 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 that supports the cam portion when the cam portion of the movable member 30 is rotated at a straight upper edge of a portion extending rearward from the connecting portion 23B.

  In order to press the flat conductor against the contact portions 26A and 26B of the signal terminals 20A and 20B, the pressure receiving portions 25A and 25B are lifted upward so that the pressing portions 24A and 24B of the upper arms 21A and 21B are displaced downward. In this embodiment, the movable member 30 is made of the same electrical insulating material as that of the housing, and has an operation part 31 and cam parts 32A and 32B. The movable member 30 is disposed in the space 14 at the rear portion of the housing 10, and the rear portions of the upper arms 21A and 21B of the signal terminals 20A and 20B are arranged at positions corresponding to the signal terminals 20A and 20B in the terminal arrangement direction. Slit-like groove portions 31A and 31B are formed to allow the intrusion of the groove, and island-like cam portions 32A and 32B are provided in the groove portions 31A and 31B so as to connect the inner wall surfaces of the grooves. In the present embodiment, when the movable member 30 is in the open position of FIGS. 2A and 2B, the cam portions 32A and 32B form a horizontally long oval island shape, and the cam portions 32A and 32B The rear portions of the upper arms 21A and 21B are received in the grooves 31A and 31B between the groove bottoms 33A and 33B of the grooves 31A and 31B. The movable member 30 is rotatable about the cam portions 32A and 32B. The movable member 30 is rotated 90 ° clockwise from the open position taking the vertically long position shown in FIGS. A reciprocating rotation operation is received between the closed positions where the posture is taken. 2A and 2B, the movable member 30 has an operating portion 31 that extends upward from the space 14 of the housing. Receive operational force for movement. When the cam portions 32A and 32B are supported by the support portions 29A-1 and 29B of the signal terminals 20A and 20B and are turned to the closed position, the cam portions 32A and 32B change from the horizontally long state to the vertically long state, and at the upper edges thereof, the signal terminals 20A. , 20B are lifted upwards. Thus, the upper arms 21A and 21B of the signal terminals 20A and 20B are inclined like a lever with the connecting portions 23A and 23B as fulcrums as described above, and the flat conductor is pressed downward by the pressing portions 24A and 24B. The contact pressure between the conductor and the contact portions 26A and 26B of the signal terminals 20A and 20B is increased.

As shown in FIGS. 3A and 3B, the metal shell 40 attached to the housing 10 is formed by bending a single metal plate and then bending it. The metal shell 40 is
A shield part 41 having an upper shield part 42 having a flat surface closely contacting the upper surface of the housing 10 and a side shield part 43 located on a side part of the housing 10, and an inner side in the terminal arrangement direction from the side shield part 43 The bent solder fixing portion 44 and the lock member 45 bent upward from the solder fixing portion 44 and parallel to the side shield portion 43, that is, having a plate surface parallel to the signal terminals 20A and 20B, are used as one member. It has one. That is, the lock member 45 is made as a part of the metal shell 40.

  The upper shield part 42 is rectangular on a flat surface, and a mounting notch 42A having semicircular and straight inner edges is formed at the rear edge at the center in the longitudinal direction (terminal arrangement direction). The mounting notch portion 42A is formed in a small area that is smaller than the width of the upper shield portion 42 in the front-rear direction and does not reduce the strength of the upper shield portion 42 or reduce the shielding effect. A locking protrusion 42A-1 is provided on the straight inner edge that forms the rear portion of the attachment notch 42A.

  The side shield part 43 has a front part 43A connected to a part of the side end of the upper shield part 42 in the front-rear direction and a rear part 43B extending rearward therefrom. The front portion 43A is bent at the boundary with the upper shield portion 42 and extends downward. The rear part 43B is formed by extending the surface of the front part 43A rearward as it is, and has an arm shape. A notch groove 43A-1 is formed at the lower edge of the front portion 43A, and a rear part of the notch groove 43A-1 is bent inward in the terminal arrangement direction, and a portion of a plane parallel to the upper shield part 42 A solder fixing portion 44 is formed. The solder fixing portion 44 has a bottom surface that can come into contact with the surface of the circuit board, and is soldered to a corresponding portion of the circuit board. The front part 43A has a leg part 43A-2 that is flush with the rear part 43B at the lower edge part in front of the cut groove 43A-1. The leg 43A-2 has a lower edge positioned on the circuit board, and forms another solder fixing part for assisting in fixing to the circuit board in the same manner as the solder fixing part 44. Only one of the solder fixing part 44 and the leg part 43A-2 may be fixed to the circuit board by soldering. In the rear part 43B of the side shield part 43, the lower edge on the rear end side is cut out in a step shape to form a shaft support part 43B-1. When the later-described movable member 30 has rotation shafts at both ends in the terminal arrangement direction, the shaft support portion 43B-1 stores the rotation shaft in the shaft support portion 43B-1 and rotates it. Dynamic support.

  The lock member 45 has a horizontal H shape similar to that of the signal terminals 20A and 20B. The lock member 45 is connected to the solder fixing portion 44 at the front portion thereof. The lock member 45 will be described later.

  From the viewpoint of attaching the metal shell 40, the housing 10 will be described again. As shown in FIGS. 4A and 4B, which are partial enlarged perspective views of the connector 1 shown in FIG. 1 from the rear, the metal shell holding groove into which the lock member 45 of the metal shell 40 is inserted in the housing 10. 17 and a protrusion 18 for locking the mounting shield 42A of the upper shield part 42 with the mounting notch 42A. The metal shell holding groove 17 has the same groove shape as the terminal insertion grooves 15 and 16 because the lock member 45 has a shape similar to the signal terminals 20A and 20B.

  As apparent from FIGS. 4A and 4B, the metal shell holding groove 17 is located outside the terminal arrangement range, in other words, the terminal insertion grooves 15 and 16 are formed. The plate surface of the lock member 45 is formed on a plane parallel to the signal terminal plate held by the insertion grooves 15 and 16. The protrusion 18 provided on the upper surface of the housing 10 is provided at a position where the attachment notch 42A of the metal shell 40 is fitted when the metal shell 40 is attached to the housing 10 from the front. A locking projection 42A-1 formed on the inner edge of the portion 42A bites into the side surface of the projection 18. Accordingly, the upper shield part 42 that is long in the terminal arrangement direction is prevented from floating upward from the upper surface of the housing 10. When the metal shell 40 is attached to the housing 10, the lock member 45 is inserted into the metal shell holding groove 17 of the housing 10.

  The lock member 45 inserted into the metal shell holding groove 17 is inserted from the front into the metal shell holding groove 17 of the housing 10 to be accommodated, as shown in FIGS. Is done. The metal shell holding groove 17 is formed in substantially the same manner as the terminal insertion grooves 15 and 16 in FIG. 2B, but the upper wall 12 and the lower wall of the housing 10 are compared to the terminal insertion grooves 15 and 16. 13 is different in that it is notched at the front. The lock member 45 is quite similar to the signal terminal 20 </ b> B of FIG. 2B and has a horizontal H shape, 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 front end side and a pressure receiving portion 50 on the rear end side. Further, the lower arm portion 47 has a lock protrusion 52 protruding upward at the front end position, the ground contact portion 51 at the intermediate portion, and the signal terminal 20 at the rear end side of the movable member 30. It has a support part 53 that supports the cam part. The locking projection 52 enters a locking recess F2 as a locked portion formed on the flat conductor F connected to the connector 1 shown in FIG. 1 to prevent the flat conductor F from coming off. Is to do. Thus, since the lock member 45 also has the ground contact portion 51, it also has a function as a ground terminal. In the present embodiment, the upper wall 12 of the housing 10 is cut away when the locking recess 52 of the flat conductor F is locked to the locking protrusion 52 so that the tip of the flat conductor F is This is to secure a space for riding on the lock protrusion 52.

  As shown in FIGS. 5A and 5B, the movable member 30 is formed with a groove portion 31C that allows the rear portion of the upper arm portion 46 to enter, and an island-shaped cam portion 32C is formed in the groove portion 31C. Is provided. The shapes of the groove 31C and the cam part 32C are the same as the groove parts 31A and 31B and the cam parts 32A and 32B of the signal terminals 20A and 20B. Thus, when the movable member 30 is rotated to the closed position, the upper arm portion 46 is tilted so that the pressing portion 49 is displaced downward with the connecting portion 48 as a fulcrum as in the case of the signal terminals 20A and 20B.

  Such a connector of this embodiment is used and functions in the following manner.

  (1) First, when assembling the connector, the signal terminal 20A shown in FIG. 2A is inserted into the terminal insertion grooves 15 and 16 from the right side without the movable member 30 and the metal shell 40 being attached. The fixed portion 28A is fixed to the fixed portion 16A of the housing 10, and the signal terminal shown in FIG. 2B is inserted into the terminal insertion grooves 15 and 16 from the left side, and the fixed portion 28B is fixed to the fixed portion 16B of the housing 10. Fix to. In many cases, the signal terminal 20A and the signal terminal 20B are alternately arranged, but may be mixed in a different order depending on the request.

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

(3) Thereafter, the metal shell 40 is attached to the housing 10 from the front. The upper shield part 42 and the side shield part 43 that form the shield part 41 of the metal shell 40 are positioned in contact with the upper surface and the side surface of the housing 10, respectively, and the lock member 45 is inserted into the metal shell holding groove 17. . The upper shield part 42 has its mounting notch 42A fitted into the protrusion 18 on the upper surface of the housing 10, and the locking projection 42A-1 at the inner edge of the mounting notch 42A bites into the side surface of the protrusion 18 to The position of the shield part 42 is firmly fixed. On the other hand, the lock member 45 inserted into the metal shell holding groove 17 is formed between the upper edge of the upper arm portion 46 and the lower arm portion 47 in the range of the connecting portion 48 in the front-rear direction as seen in FIG. The lower edge is pressed into and held between the upper and lower groove bottoms of the metal shell holding groove 17. Further, the lower edge of the lower arm portion 47 is provided with a locking projection for preventing the removal, and the prevention of the removal is further strengthened.

  (4) The connector 1 assembled in this way is arranged on a predetermined circuit board in use. When the connector 1 is arranged on the circuit board, the connection parts 27A and 27B of the signal terminals 20A and 20B, the solder fixing part 44 of the metal shell 40, and the leg part 43A-2 are in contact with the corresponding parts of the circuit board. . Thereafter, soldering with the corresponding portion is performed, the signal terminals 20A and 20B are electrically connected and fixed to the corresponding circuit, and the solder fixing portion 44 and the leg portion 43A-2 of the metal shell 40 are grounded. Fixed together.

  (5) Thereafter, the flat conductor F shown in FIG. 1 is inserted into the connector 1, and the movable member 30 is rotated to the closed position. By rotating to the closed position, the cam portions 32A, 32B, 32C of the movable member 30 are in a vertically long state, and the pressure receiving portions 25A, 25B of the signal terminals 20A, 20B and the pressure receiving portion 50 of the lock member 45 are pressed upward. Based on the above-described lever principle, the upper arms 21A and 21B of the signal terminals 20A and 20B and the upper arm 46 of the lock member 45 are inclined so that the pressing portions 24A, 24B and 49 at the front ends are displaced downward, and these pressing portions 24A. , 24B, 49 press the flat conductor F downward. The flat conductor F pressed downward increases the contact pressure with the contact portions 26A and 26B of the signal terminals 20A and 20B. In addition, the ground contact portion 51 of the lock member 45 contacts the ground portion of the flat conductor, and the lock protrusion 52 of the lock member 45 enters the locking recess F2 of the flat conductor F so that the flat conductor F Omission is prevented. Moreover, since the flat conductor F is pressed downward by the pressing portion 49 of the lock member 45, the flat conductor F does not float and the lock protrusion 52 does not come off from the locking recess F2.

  In the present embodiment, the electrical connection between the flat conductor F and the signal terminals 20A and 20B is performed by connecting the corresponding circuit portion provided on the lower surface of the flat conductor F and the contact portions 26A and 26B of the signal terminals 20A and 20B. However, the connection form 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. A corresponding circuit portion may be provided on the lower surface, and both upper contact connection and lower contact connection may be used. Further, the upper contact connection and the lower contact connection may be alternately made in the terminal arrangement direction.

    In the embodiment shown in FIGS. 1 to 5, the lock member 45 made as a part of the metal shell 40 has the pressing portion 49 and the lock projection 52 located on one plate surface portion. It is also possible to provide a pressing portion on one of two plate surface portions parallel to each other and a locking projection on the other.

  In the form as a modified example of FIG. 6, the pressing portion 49 is provided at the front portion and the pressure receiving portion 50 is provided at the rear portion. The lower arm portion 47 connected by the upper arm portion 46 and the connecting portion 48 is separated from the first lower arm portion 47A located in the same plane as the upper arm portion 46 in the terminal arrangement direction from the first lower arm portion 47A. And a second lower arm portion 47B that forms a plate surface portion parallel to the first lower arm portion 47A. The second lower arm portion 47B is connected to the first lower arm portion 47A by an extended portion 47C that is bent at the front lower edge of the first lower arm portion 47A and extends laterally. The first lower arm portion 47A has a ground contact portion 51 at a position immediately behind the extending portion 47C and a support portion 53 at a rear end position. Thus, the first lower arm portion 47A extends substantially the same as the upper arm portion 46, but the second lower arm portion 47B extends only forward from the position of the extending portion 47C and is formed to be short. ing. The second lower arm portion 47B has a surface parallel to the first lower arm portion 47A by being bent at a right angle to the surface of the extending portion 47C. And the lock protrusion 52 which protrudes upwards is formed in this 2nd lower arm part 47B. The extending portion 47C is connected to the solder fixing portion 44 and forms the same surface, and can be used for solder fixing with the circuit board as a part of the solder fixing portion 44.

  In such a configuration of FIG. 6, the pressing portion 49 and the locking projection 52 are shifted from each other in the terminal arrangement direction, that is, the width direction of the flat conductor, so that the locking projection 52 is the flat conductor. When entering and locking in the locking recess F2 (see FIG. 1) of F, the pressing portion 49 is a flat conductor within the range of the locking recess F2 in the front-rear direction and in the vicinity of the side edge of the locking recess F2. F can also be pressed from above. In this case, since the pressing position by the pressing portion 49 coincides with the locking projection 52 in the front-rear direction, even when an external force is applied that causes the flat conductor F to be lifted upward, a moment in the lifting direction does not occur. The pressing for locking becomes very effective.

  1 to 6, the lock member 45 is made as a part of the metal shell 40 having the shield part 41, but the present invention shows that the lock member 45 is integrated with the shield part 41. The lock member 45 may be integrated with a part having a function other than the shield part. For example, the modified embodiment shown in FIG. 7 is integrated with the lock member 45, the solder fixing portion 44, and the support arm portion 43 '. In the form of FIG. 7, the lock member 45 itself has an upper arm part 46 having a pressing part 49 and a lower arm part 47 having a lock protrusion 52 located on the same plane as in the forms of FIGS. 3 and 5. The lower arm portion 47 has a solder fixing portion 44 that is bent at the front portion and forms a surface parallel to the circuit board, and further has a support arm portion 43 ′ that is bent and forms a surface parallel to the lock member 45. ing. The support arm portion 43 'itself has the same shape as the side shield portion 43 in the metal shell 40 in the form of FIG. Therefore, the member having the lock member 45, the solder fixing portion 44, and the support arm portion 43 ′ in FIG. 7 as one body has the same form as the remaining member by cutting off the upper shield portion 42 from the metal shell 40 in FIG. . In FIG. 7, the front portion of the support arm portion 43 ′ forms a leg portion 43 </ b> A- 2 and can be soldered to the circuit board, and is used for fixing the connector together with the solder fixing portion 44. Further, a shaft support part 43B-1 cut out in a step shape is formed at the rear part of the support arm part 43 ′, and when the movable member has a rotation shaft at both ends in the terminal arrangement direction, The shaft support portion 43B-1 receives and supports the rotating shaft.

  FIG. 8 shows a modified example in which the lock member 45 and the solder fixing portion are integrated. In the form of FIG. 8, the lock member 45 is formed again on two parallel plate surface portions, in which the pressing portion 49 and the lock projection 52 are separated in the terminal arrangement direction, and the lock member 45 of FIG. It is the same form. That is, the extended portion 47C extends by being bent at the lower edge of the second lower arm portion 47B, and a lock protrusion 52 that is bent upward and protrudes from the extended portion 47C is formed. 47C is integrated with a solder fixing portion 44 extending in the same plane from the position of the lock protrusion 52 in the terminal arrangement direction, and together with the solder fixing portion 44, is fixed to the circuit board by soldering. To serve. In the embodiment of FIG. 8, the solder fixing portion 44 is not necessary, and only the solder fixing at the extending portion 47C is sufficient. Further, if the fixing force at the other fixing portion is sufficient, solder fixing at the extending portion 47C is not necessary.

  In the connector according to the illustrated embodiment, the flat conductor is inserted in a direction parallel to the circuit board. However, the connector to which the present invention is applied is not limited to this, for example, an opening in which the housing opens upward. It may be a so-called vertical (vertical type) connector in which a flat conductor is inserted into the opening from above in a direction perpendicular to the circuit board.

  Further, the signal terminal may be a so-called bent terminal that is bent in the thickness direction of the metal plate, instead of maintaining the flat surface of the metal plate as illustrated.

<Second embodiment>
In the connector described in the first embodiment, the signal terminal and the ground terminal have an upper arm portion and a lower arm portion, and both arm portions are connected by a connecting portion at an intermediate position in the longitudinal direction, and are located in front of the connecting portion. A so-called back flip that accepts a flat conductor between both arms and presses the flat conductor against the front arm of the lower arm at the front end of the upper arm by tilting the upper arm by the action of a movable member behind the connecting part. It was a type of connector that could be attached to a connector having a type terminal. On the other hand, this embodiment shows that the present invention can also be applied as a connector having a front flip type terminal. The connector according to the present embodiment is different from the connector according to the first embodiment in that the shape of the terminal and the movable member are rotatably provided on the front end side. Therefore, the connector and the movable member will be mainly described. .

  In FIG. 9, the lock member 60 is made while maintaining a flat plate surface of a metal plate, as in the case of the first embodiment. The upper arm part 61 and the lower arm part 62 are connected by a connecting part 63 at the rear part thereof. The upper arm portion 61 has elasticity so as to bend up and down with the connecting portion 63 as a fulcrum. An inverted U-shaped guide support portion 64 is formed at the front portion of the upper arm portion 61. On the other hand, the lower arm portion 62 is fixedly supported by the housing 70, and a lock protrusion 66 protruding upward is provided at the front portion.

  The movable member 80 has an operation portion 81 on one end side and a groove portion 81A that receives the front end portion of the upper arm portion 61 of the lock member 60 on the other end side, and a shaft portion 82 is provided in the groove portion 81A. Yes. The movable member 80 moves between a closed position in a horizontal position as seen in FIG. 9 and an open position in a vertical position that pivots clockwise about the shaft portion 82. It is possible. The shaft portion 82 is pivotally guided and supported by the guide support portion 64 of the lock member 60.

  When the movable member 80 comes to the closed position, the lock projection 66 enters the locked portion F2 of the flat conductor F. On the other hand, the movable member 80 that presses the flat conductor F receives a reaction force from the guide support portion 64 of the lock member 60 at the shaft portion 82. This reaction force becomes a pressing force to the flat conductor F via the movable member 80. Accordingly, since the flat conductor F receives this pressing force from above, the lock protrusion 66 is released from the locked portion F2 of the flat conductor F without being lifted upward even if an inadvertent external force is applied. Therefore, the locking of the flat conductor F with the lock protrusion 66 in the pulling direction is reliably maintained.

  In the present embodiment, when a ground contact is formed on the lower surface of the flat conductor F, the ground contact is brought into contact with the ground contact portion 67 formed on the upper edge of the lower arm portion 62. The lock member 60 can also function as a ground terminal.

DESCRIPTION OF SYMBOLS 10 Housing 60 Lock member 20A, 20B Signal terminal 61 Upper arm part 26A, 26B Contact part 62 Lower arm part 30 Movable member 63 Connection part 40 Metal shell 64 Guide support part 41 Shield part 66 Locking protrusion 44 Solder fixing part 80 Movable member 45 Lock member 81 Shaft portion 51 Ground contact portion F Flat conductor 52 Lock protrusion F2 Locked portion

Claims (7)

The flat conductor from the open position that allows the flat conductor to be inserted into the signal terminal of the metal plate, the housing of the electric insulating material for arranging and holding the plurality of signal terminals, and the opening formed in the front portion of the housing In a circuit board electrical connector having a movable member movable toward a closed position that presses against a contact portion of a signal terminal and a lock member that prevents the inserted flat conductor from coming off, the lock member is a flat plate of a metal plate An upper arm formed on the plate surface portion so as to extend in the front-rear direction, the plate surface portion being held by the housing so as to be perpendicular to the arrangement direction of the signal terminals. The upper arm and the lower arm are formed as a single member by connecting via a connecting portion, and between the front of the upper arm and the front of the lower arm before the connecting portion. The above flat conductor can be inserted into the lower arm Is fixedly held by the housing, and the upper arm portion is elastically displaceable so as to tilt like a lever with respect to the lower arm portion within a plane including the surface of the plate surface portion with the connecting portion as a fulcrum. A flat part is provided at the front part of the upper arm part to press the flat conductor, protrudes upward from the front part of the lower arm part of the lock member, and is inserted when the movable member is in the open position. in extraction direction of the conductor and the flat conductive member, the flat-type locking projections for locking the該被locking portion is provided by rush into the engaged portion of the conductor, the locking member is movable to the rear upper arm A pressure receiving portion with which the cam portion of the member abuts, and when the movable member moves to the closed position, the pressure receiving portion is pressed against the cam portion, and the upper arm portion of the locking member is a flat type at the pressing portion. The flat conductor is pressed downward and elastically displaced downward to increase the contact pressure with the conductor. The flat conductor is sandwiched between the lower arm part of the member and the pressing part of the upper arm part, and the interference between the locked part of the flat conductor and the lock protrusion is maintained in the extraction direction. An electrical connector for a circuit board.
Signal terminal has a upper arm and a lower arm portion extending linked front-rear direction by the connecting portion, the cam portion of the movable member the pressing portion and the upper arm rear to pressure the flat conductive downward the upper arm front portion When the movable member moves to the closed position, the pressure receiving portion is pressed by the cam portion, and the upper arm portion is elastically displaced downward, so that the pressing portion of the upper arm portion 2. The circuit board electrical connector according to claim 1, wherein the flat conductor is pressed to increase a contact pressure between the contact portion of the lower arm front portion and the flat conductor.   The housing is attached with a metal shell having a shield part that covers at least the arrangement range of the signal terminals, a part of the metal shell is formed as a lock member, and the lock member and the shield part are a single member. The electrical connector for circuit boards according to claim 1.   The locking member has a ground contact portion that contacts the ground circuit portion of the flat conductor on at least one of the lower arm portion and the upper arm portion, and also serves as a ground member. An electrical connector for a circuit board according to one of the above.   The metal shell has a solder fixing portion that is in contact with the surface of the circuit board at a portion connecting the shield portion and the lock member, and the fixing portion can be soldered to a corresponding portion of the circuit board. 3. An electrical connector for a circuit board according to 3.   The lock member is formed as two parts of parallel surfaces where the plate surface portions are spaced apart from each other in the terminal arrangement direction and connected to each other, and a pressing part is provided on one part and a lock protrusion is provided on the other part. 6. The circuit board electrical connector according to claim 1, wherein the circuit board electrical connector is provided. The flat conductor from the open position that allows the flat conductor to be inserted into the signal terminal of the metal plate, the housing of the electric insulating material for arranging and holding the plurality of signal terminals, and the opening formed in the front portion of the housing In a circuit board electrical connector having a movable member movable toward a closed position that presses against a contact portion of a signal terminal and a lock member that prevents the inserted flat conductor from coming off, the lock member is a flat plate of a metal plate An upper arm formed on the plate surface portion so as to extend in the front-rear direction, the plate surface portion being held by the housing so as to be perpendicular to the arrangement direction of the signal terminals. And the upper arm portion and the lower arm portion are connected to each other via a connecting portion at the rear of each other, and the flat conductor is inserted between the upper arm portion and the lower arm portion. The lower arm is fixedly secured by the housing. The upper arm portion is elastically displaceable so as to tilt like a lever with respect to the lower arm portion within a plane including the surface of the plate surface portion with the connecting portion as a fulcrum, and the lock member is disposed on the upper arm portion with the movable member. And a flat conductor inserted when the movable member is in the open position. The flat conductor is provided with a guide support portion for guiding and supporting the shaft portion of the lock member. Each having a locking projection that engages with the locked portion by protruding into the locked portion of the flat conductor in the pulling out direction, and when the movable member moves to the closed position, the guide support is provided assay the shaft portion of the movable member, increasing the contact pressure between the flat conductor said movable member by the pressing force of the reaction force from the guide support, the lower arm portion of the locking member Make sure that the locking protrusion of the wire is positioned so as to interfere with the locked portion of the flat conductor in the front-rear direction. Electrical connector for a circuit board according to symptoms.

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