JP2014082104A - Electric connector for flat conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector for a flat conductor which can be produced easily, in which terminals can be arrayed densely and impedance can be improved without reducing the strength of a housing, and which is appropriate for high-speed signal transmission.SOLUTION: The electric connector for a flat conductor comprises a signal terminal 20 in the shape of an arm-like member, and a support terminal 30 in which an arm part 30A and a supporting part 35 are coupled by a coupling part 34. In a portion of the signal terminal 20 between a contact part 22 and a connecting part 21 and in a portion of the support terminal 30 between a contact part 32 and the coupling part 34, fixed parts 23, 33 are included which are press-fitted into an island-shaped fixing part 19 of a terminal groove 18. Both the signal terminal 20 and the support terminal 30 can be selectively inserted into the terminal groove 18, and the fixed part of the signal terminal or the support terminal can be press-fitted between the fixing part and a lower wall. The terminal groove 18 includes a wide area in which a distance between groove inner wall surfaces in a direction rectangular to a plate surface is larger than a guide groove width of a terminal, within a front area 18B formed from the fixing part and a portion in front of the fixing part in a longitudinal direction.

Description

  The present invention relates to an electrical connector for a flat conductor.

  As the flat conductor, a flexible substrate (FPC), a flat cable (FFC) and the like are known. Such a flat conductor is often used for a multipolar electrical connector attached to a circuit board because the conductors are densely arranged. In order to arrange the terminals densely corresponding to the above flat conductors, the multi-pole electrical connector is arranged by arranging the terminals made by maintaining the flat plate surface of the metal plate as it is in the direction perpendicular to the plate surface. Have. As such a connector, a connector disclosed in Patent Document 1 is known.

  Such electrical connectors are also widely used for high-speed signal transmission. In the high-speed signal transmission connector, a terminal made by maintaining the above-described plate surface is composed of a signal terminal (signal contact) and a support terminal (support contact) as seen in, for example, Patent Document 2. . The support terminal movably supports a movable member (operation member) for pressing the flat conductor. In Patent Document 2, the signal terminal is formed as an arm-like member that connects a contact portion that contacts the flat conductor and a connection portion that is solder-connected to the circuit board in a straight line so as to be suitable for high-speed signal transmission. In addition, there is no portion that protrudes or extends between the contact portion and the connecting portion other than the protrusion for locking to the terminal groove of the housing. This can reduce the influence of stubs in high-speed transmission in the G (giga) bps band. On the other hand, the support terminal has an arm portion whose contact portion has the same shape as the signal terminal up to the connection portion. In addition, the support terminal is parallel to the arm portion at the upper end of the connecting portion rising at an intermediate position of the arm portion. It also has a supporting arm portion extending in this manner. The support arm portion has a support portion, and the movable member is movably supported by the support portion. In Patent Document 2, since the signal terminal of the arm-shaped member and the arm portion of the support terminal have the same shape, either the signal terminal or the support terminal can be selectively inserted into the plurality of terminal grooves.

  In order to improve the high-speed transmission characteristics, it is necessary to make the impedance of the connector as close as possible to the impedance of the circuit board and the connection object.

  However, between the terminal grooves formed in the housing, there is a partition wall that partitions the two and supports the terminal by the plate surface of the terminal, and the relative dielectric constant of the resin material that is the material of the housing Is expensive. Accordingly, the coupling capacity between adjacent terminals is likely to increase, and the impedance of the connector tends to be greatly reduced as compared with the impedance of the circuit board and the connection object.

  Therefore, in Patent Document 3, by providing a hollow portion in the thickness range of the partition wall of the housing and forming an air layer between adjacent terminals, the dielectric constant between the terminals is lowered, and as a result, the connector Impedance is increased.

JP2009-266440 JP2011-216220 JP2012-074341

  In Patent Document 3, since the hollow portion is formed in the thickness range of the partition wall while supporting the plate surface of the terminal on both sides of the partition wall of the housing between the terminals, in order to maintain the strength of the partition wall Considering the dimensions of the hollow portion, the thickness of the partition wall must be increased, and a dense arrangement of a plurality of terminals cannot be achieved. On the other hand, if the thickness of the partition wall is reduced in order to perform a dense arrangement, there is a problem that the strength of the partition wall is reduced due to the presence of the hollow portion.

  Furthermore, in order to form a hollow part in the partition wall which is not so thick originally, the metal mold | die for mold-molding a housing becomes complicated, and cost becomes high.

  In view of such circumstances, the present invention is a flat type suitable for high-speed signal transmission that can be easily manufactured and can increase the impedance without lowering the strength of the housing while ensuring that the terminals can be arranged densely. It is an object to provide an electrical connector for a conductor.

  The electrical connector for a flat conductor according to the present invention has a signal terminal having a contact portion for contact with a flat conductor inserted forward into the receiving portion of the housing and a support terminal having a flat metal plate. The plate surface is maintained, inserted into the terminal groove of the housing, and arranged and held in a direction perpendicular to the plate surface.

  In such an electrical connector for a flat conductor, in the present invention, the signal terminal includes an arm-like member in which a contact portion and a connection portion for soldering to a circuit board outside the housing are formed at different positions extending in the front-rear direction. None, the support terminal extends in the front-rear direction, has an arm portion formed with a contact portion, in addition to the arm portion, a support arm portion located on the opposite side of the arm portion with respect to the flat conductor, and the arm portion A support portion for connecting the support arm portion, and a support portion for movably supporting a movable member for pressurizing the flat conductor is formed at a tip portion of the support arm portion. The support terminal has a fixed portion that is press-fitted into the corresponding fixing portion of the terminal groove in the portion between the contact portion and the connection portion, and the support terminal is in the portion between the contact portion and the coupling portion, and the terminal groove is a signal terminal The housing is formed so that both the support terminal and the support terminal can be selectively inserted. It is formed between the upper wall and the lower wall, an island-shaped fixing part is provided in the terminal groove, and the fixed part of the signal terminal or the support terminal acts in the vertical direction between the fixing part and the lower wall. At least a portion of the terminal groove is fixed to the plate surface in a front region formed by the island-shaped fixing portion and the front portion of the fixing portion in the front-rear direction. It is characterized by having a wide area in which the distance between the inner wall surfaces of the grooves in the direction perpendicular to each other is larger than the width of the guide groove in the same direction for inserting and inserting the terminal.

  In the present invention having such a configuration, since it has a wide area in any part of the front area of the terminal groove, in the wide area, an air layer is formed on both sides or one side of the terminal, As a result, the impedance of the connector is increased. The terminal is very effective because the portion corresponding to the front region occupies much of the plate surface area of the terminal. Except for the portion where the wide wide area is formed, the terminal groove can support the terminal on both sides of the terminal, thereby securing the supporting force. Since the fixing part exists in an island shape in the vicinity where the wide wide area is formed, the strength of the housing does not decrease even if the wide wide area is formed.

  In the present invention, the terminal groove is a groove in the wide area in the wide and wide range in the front-rear direction on the upper or lower groove surface of the terminal groove corresponding to at least one of the upper edge and the lower edge of the terminal. It can be made to have the narrow groove part formed narrower than the width | variety. The groove depth of the narrow groove portion may be very small, and the terminal can be reliably maintained in place in the plate thickness direction without substantially reducing the range of the wide width region. As a result, the thickness of the air layer between adjacent terminals is constant with respect to any terminal, and the impedance is also stable.

  As described above, according to the present invention, the wide portion is provided in the front region of the terminal groove corresponding to the fixed portion of the terminal fixed by the fixing portion provided in the island shape in the housing terminal groove and the portion formed by the front portion thereof. Since the air layer is formed between the terminal groove and the terminal, even if the air layer is formed on the plate surface side of the terminal at the wide portion, the terminal groove does not substantially reduce the strength of the housing. Moreover, the wide portion can be easily manufactured, and the impedance of the connector can be reliably increased.

It is a perspective view when the flat conductor before insertion connection with the connector of 1st embodiment of this invention is seen from the back used as the insertion side of this flat conductor. FIG. 2 is an enlarged cross-sectional view showing a part of the connector of FIG. 1 with a movable member omitted. FIG. 2 is a longitudinal sectional view when the movable member is in an open position in a state where there is no terminal of the connector of FIG. 1, and the position where the terminal is to be inserted is indicated by a two-dot chain line, (A) is a support terminal, (B) FIG. 4 is a cross-sectional view at the position of a signal terminal. FIG. 3 shows the connector of FIG. 3 in a state in which a terminal is inserted, and the movable member is a longitudinal sectional view in an open position, (A) is a position of a support terminal, and (B) is a cross section at a position of a signal terminal. FIG. 3 is a vertical cross-sectional view taken along a plane perpendicular to the paper surface in FIG. 3 when a terminal is inserted into the connector of FIG. 3, (A) is a VA-VA cross section in FIG. 3 (A), and (B) is FIG. It is a VB-VB cross section in). It is sectional drawing in the position corresponded to FIG.5 (B) about the modification of this invention. It is sectional drawing in the position corresponded to FIG.5 (B) about the other modification of this invention.

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

  FIG. 1 is an overall perspective view showing the connector 1 of this embodiment and a flat conductor F to be inserted and connected to the connector 1 as viewed from the rear before connection.

  In FIG. 1, reference numeral F denotes a flat conductor, which extends rearward from the front end portion located on the connector 1 side. In the drawing, only a part of the front end portion side is shown, and the other portions are illustrated. Is omitted. In the flat conductor F, a sheet-like reinforcing member F1 is adhered to the upper surface of the front end portion, and the connection conductor portion is exposed on the lower surface so that it can come into contact with contact portions of two kinds of terminals described later. Yes. Further, the flat conductor F has locking portions F2 protruding in an ear shape at side edges located on both sides in the width direction.

  The connector 1 includes a connector main body 10 and a movable member 50 that is supported by the connector main body 10 and is rotatable. The movable member 50 is rotatable between an open position shown in FIG. 1 where the front end portion of the flat conductor F can be inserted into the connector body 10 and a closed position which presses the inserted flat conductor. Yes. When the movable member 50 comes to the closed position, the outer shape of the connector 1 is a substantially rectangular parallelepiped.

  The connector main body 10 includes a housing 11 made of an electrically insulating material, and two types of terminals 20 and 30 and a fixing bracket 40 held by the housing 11. The two types of terminals 20 and 30 repeat that two types of terminals 20 are arranged with the width direction of the flat conductor F being the arrangement direction, and other types of terminals 30 are arranged next to the terminals 20 and 30. The fixing bracket 40 is located outside the arrangement range of the terminals 20 and 30. The housing 11 includes side walls 12 located at both ends in the arrangement direction of the terminals, a lower wall 13 that connects both side walls 12 at their lower parts, a front wall 14 located at the front, and the front wall 14 An upper wall 15 located on the upper side is integrally formed, and an opening 16 is formed between the both side walls 12 above the lower wall 13 and opened upward and rearward. The opening 16 functions as a receiving portion for inserting a flat conductor F, which will be described later, and a space for disposing and moving the movable member 50 described above.

  In the housing 11, a metal groove 17 for the fixing metal 40 made of a metal plate is formed along the inner surface of the side wall 12, and the fixing metal 40 is attached thereto. The fixing bracket 40 slightly protrudes from the bottom surface of the housing 11 and contributes to fixing the housing 11 by soldering with a corresponding portion of a circuit board (not shown).

  A plurality of terminal grooves 18 for receiving terminals are formed between both the metal groove 17 in the width direction. The terminal is composed of two kinds of a signal terminal 20 and a support terminal 30 which will be described later. In either case, the flat metal plate is made while maintaining the plate surface. Therefore, the terminal groove 18 also has its plate thickness. It is a slit-shaped groove suitable for. As shown in FIGS. 3A and 3B, the terminal groove 18 is formed so as to penetrate in the front (right) and rear (left) directions. Have. The terminal groove 18 penetrates the front wall 14 between the upper wall 15 and the lower wall 13 of the housing in the front-rear direction, and extends to the upper surface of the lower wall 13 at the rear portion where the opening 16 is formed. Yes. The terminal groove 18 includes a terminal groove into which the signal terminal 20 is inserted, as can be seen in FIGS. 3A and 3B in which the signal terminal 20 and the support terminal 30 are shown by two-dot chain lines, respectively. The terminal groove into which the support terminal 30 is inserted is also formed in the same shape. Therefore, any of the signal terminals 20 and the support terminals 30 can be selectively inserted into any terminal groove 18. In the terminal groove 18, an island-shaped fixing portion 19 is provided between the upper wall 15 and the lower wall 13 in the vertical direction at the rear portion of the front wall 14, and the terminal groove 18 is connected to the fixing portion 19. An upper region 18A on the upper side, a front region 18B positioned forward on the lower side, a connecting region 18C for communicating both regions on the front side, and a rear portion of the lower wall 13 corresponding to the opening 16 in the front-rear direction (See FIG. 3A for the range of each of the regions 18A to 18D). The upper region 18A, the front region 18B, the connection region 18C, and the open rear region 18D communicate with each other to form one terminal groove 18. In the terminal groove 18, the groove bottom of the open rear region 18D is positioned one step below the groove bottom of the front region 18B. This allows displacement of the contact portions 22 and 32 of the terminals 20 and 30, which will be described later, and prevents the flux from reaching the contact portions even when the flux rises during solder connection of the terminals. A gap will be formed.

  The terminal groove 18 includes the upper region 18A, the front region 18B, the connecting region 18C, and the open rear region 18D, that is, the entire region of the terminal groove 18 is used for the support terminal 30, and the front region 18B Only the open rear region 18D is used for the signal terminal 20. The terminal groove 18 will be referred to again after explanation of the signal terminal 20 and the support terminal 30.

  As shown in FIG. 4 (A), the signal terminal 20 made while maintaining a flat plate surface of a metal plate is formed as an arm-like member extending in the front-rear direction, and has a connecting portion 21 and a rear end at the front end portion. A contact portion 22 is provided at the portion, and a protrusion 23 as a fixed portion is provided at the intermediate portion. The connection portion 21 is formed as a portion that protrudes out of the housing 11 and is bent downward, and the lower edge of the connection portion 21 is located below the bottom surface of the housing 11, and a circuit board (not shown). When arranged on the top, it is soldered to the corresponding portion of the circuit board. The signal terminal 20 extends rearward to the middle portion of the housing 11, and the contact portion 22 is provided so as to protrude upward at the rear end thereof. The protrusions 23 as the fixed parts are formed at two locations on the upper edge of the intermediate part. The signal terminal 20 formed in this way is press-fitted between the island-shaped fixing portion 19 of the terminal groove 18 of the housing 11 and the lower wall 13. The protrusion 23 bites into the lower edge of the fixing portion 19 and the fixing position is determined. The rear portion of the signal terminal 20 protrudes rearward from the front wall 14 of the housing 11, and the lower edge forms a gap with the groove bottom of the terminal groove 18, so that downward elastic deflection is possible. ing. That is, when the contact portion 22 receives a downward force from the flat conductor F, the contact portion 22 can be elastically displaced downward by the gap. The signal terminal 20 is inserted into the terminal groove 18 from the front opening of the terminal groove 18, and in the terminal groove 18, the rear portion including the contact portion 22 is in the open rear region 18 </ b> D of the terminal groove 18 and is fixed. The front part including the protrusion 23 as a part is accommodated in the front region 18B (see FIG. 3A).

  On the other hand, as shown in FIG. 4B, the support terminal 30 is made while maintaining a flat plate surface of a metal plate like the signal terminal 20, but the arm having the same shape as the signal terminal 20. In addition to the portion 30A, it has a support arm portion 35 connected by a connecting portion 34 at the front end of the arm portion 30A. The signal terminal 20 and the support terminal 30 can be selectively inserted into the terminal groove 18 as described above, but the arm portions 30A of the signal terminal 20 and the support terminal 30 do not necessarily have the same shape. In short, it suffices if it can be selectively inserted into the terminal groove 18.

  The arm portion 30A has the same shape as the signal terminal 20 as described above, and has a connection portion 31 at the front end, a contact portion 32 at the rear end, and a protrusion 33 as a fixed portion at the intermediate portion. Similarly to the case of the signal terminal 20, the arm portion 30 </ b> A can be elastically bent at the rear portion and the contact portion 32 can be elastically displaced.

  The connecting portion 34 of the support terminal 30 is located on the right side of the island-shaped fixing portion 19 of the housing 11 and extends upward on the front end side of the arm portion 30A.

  The support arm portion 35 extends rearward from the upper end of the connecting portion 34. The support arm portion 35 penetrates between the fixed portion 19 and the upper wall 15 and extends rearward, and a concavely curved support portion 36 is formed on the lower edge of the rear end. The support arm portion 35 has a wider width (a vertical dimension in the drawing) and higher rigidity than the arm portion 30A located below. The support terminal 30 is required to have the support portion 36, and does not necessarily need to have the connection portion 31 described above.

  When the support terminal 30 is inserted from the front to the rear into the terminal groove 18, the arm portion 30 </ b> A is press-fitted between the island-shaped fixing portion 19 and the lower wall 13, similarly to the signal terminal 20. At the same time, the support arm portion 35 is disposed between the fixed portion 19 and the upper wall 15. The support terminal 30 is such that, of the arm portion 30A, the rear portion including the contact portion 32 is accommodated in the open rear region 18D of the terminal groove 18 and the front portion including the protrusion 33 as the fixed portion is accommodated in the front region 18B. This is the same as the signal terminal 20.

  Next, the terminal groove 18 seen in FIG. 3A, particularly the groove width in the front region 18B, will be described again.

  As shown in FIG. 3 (A), the terminal groove 18 has a wide area with a groove width that is larger than the plate thickness of the signal terminal 20 and the support terminal 30 in the front region 18B. Yes. Except for this wide area, the terminal groove 18 is in contact with the plate surface or forms a slight gap with the plate surface so that the signal terminal 20 and the support terminal 30 can be inserted and guided or supported by these plate surfaces. The narrow groove portion narrower than the wide area is formed. The wide wide area only needs to be formed in at least a part of the front area.

  As shown in FIGS. 3 (A) and 3 (B), the wide width region is formed in a portion located at the front and upper part of the front region 18B of the terminal groove 18, and is parallel to the taper region 18B-1. 18B-2. In the front-rear direction, the parallel region 18B-2 is formed in the front part of the island-shaped fixing part 19, and the taper region 18B-1 is formed in the front-rear direction range of the fixing part 19. As shown in FIG. 5B, the parallel region 18-2 has a groove width sufficiently larger than the plate thickness of the signal terminal 20 and the support terminal 30, and the air layer A between the plate surface of the terminals. Is forming.

  The taper region 18B-1 has a wide parallel region 18B so that the groove width gradually increases from the groove width (groove width of the narrow groove portion) in the open rear region 18D at the rear to the groove width in the wide region. -2 (see also FIG. 2). The taper region 18B-1 has a function of smoothly inserting the terminal into the terminal groove 18 and causing the electrical characteristics to gradually change in the taper region 18B-1. 5A is a VA-VA cross section in FIG. 3 in the open rear region 18D behind the taper region 18B-1 in the front-rear direction, and FIG. 5B is the parallel region 18B-2. VB-VB cross sections are shown respectively.

  As can be seen from FIG. 5B, the air layer A is formed by the parallel region 18B-2 in the wide width region on both side plate surfaces of both the signal terminal 20 and the arm portion 30A of the support terminal 30. Yes.

  The improvement of the impedance at the terminal due to the formation of the air layer A is more strongly demanded for the signal terminal 20 for high-speed signal transmission than for the support terminal 30. As shown in FIG. 4 (A), the signal terminal 20 has a rear portion from the position where the protrusion 23 as the fixed portion fixed and held by the island-shaped fixing portion 19 of the housing 11 is provided. Since the contact portion 22 provided at the rear end is elastically displaced, the contact portion 22 is formed thin (height dimension is small). In other words, the front portion is not elastically displaced from the position where the protrusion 23 is provided. It is thick because of unnecessary relation (height dimension is large). In other words, the plate portion area of the front portion of the signal terminal 20 is wider than that of the rear portion. The front region 18B in which the air layer A is formed in the present embodiment is located in the range of the front portion of the signal terminal 20. Accordingly, the air layer can be formed in a wide range with respect to the thick front portion, and the impedance is effectively improved accordingly.

  Moreover, the air layer A is located in the vicinity of the island-shaped fixing portion 19 provided in the housing 11, and the fixing portion 19 is continuous in a direction perpendicular to the paper surface with respect to all the terminal grooves 18 in FIG. 3. Therefore, even if the air layer A is formed, the strength of the housing 11 is not lowered. Further, in this embodiment, as shown in FIG. 5B, the signal terminal 20 and the support terminal 30 are such that the lower end edge of the portion where the air layer A is formed is the lower end groove surface of the narrow groove portion of the terminal groove 18. Therefore, although it is a small area, since it is regulated or supported by the plate surface, the position in the plate thickness direction is constant, and as a result, the impedance is also stabilized.

  In this embodiment, as shown in FIG. 5B, the air layer A is formed on both plate surface sides of the terminal with respect to both the signal terminal 20 and the arm portion 30A of the support terminal 30, In the present invention, the present invention is not limited to this, and it is sufficient if it is formed at least for the signal terminal 20 as shown in FIGS. 6 and 7, and may be on one plate surface side, and as shown in FIG. 7. The air layers A for the adjacent signal terminals 20 may communicate with each other.

  In this embodiment, the signal terminal 20 and the support terminal 30 are arranged so that one support terminal 30 is positioned adjacent to the two signal terminals 20, and the support terminal 30 is grounded with respect to the signal terminal 20. Used as a terminal.

  The movable member 50 is made of an electrically insulating material similar to that of the housing 11, has a width over the terminal arrangement range, and is disposed in the opening 16 of the housing 11 as seen in FIG. 1. The movable member 50 is movably supported between the open position and the closed position as described above, but in the open position seen in FIGS. 4A and 4B, the groove 51 is formed in the lower portion. Is formed. The groove 51 is formed at a position corresponding to the terminal groove 18 for the signal terminal 20 and the support terminal 30 in the terminal arrangement direction, penetrates in the front-rear direction, and is opposed to the groove 51 at the lower end position. A shaft portion 52 that connects the inner surfaces is provided. The shaft portion 52 has a substantially circular peripheral surface and is rotatably supported in a support portion 36 formed in a concavely curved shape on the support arm portion 35 of the support terminal 30. However, since the signal terminal 20 does not have the support arm portion as described above, the shaft portion 52 positioned corresponding to the signal terminal 20 is not supported at all. The movable member 50 is rotatably supported by a housing at a shaft portion (not shown) at both ends in the width direction (terminal arrangement direction). 4A and 4B, the movable member 50 has an operation portion 53 at an upper portion where the groove portion 51 is not formed, and projects upward from the upper wall 15 of the housing 11. The movable member 50 is rotated between the open position and the closed position in response to the operation force by the operation portion 53.

  In the movable member 50, the rear surface (left surface) from the lower end portion to the operation portion 53 in FIGS. 4A and 4B forms a pressurizing portion that presses the flat conductor F in the closed position.

  The connector 1 of this embodiment is used by being attached to a circuit board (not shown). The signal terminal 20 and the support terminal 30 have their connection portions 21 and connection portions 31 solder-connected to corresponding circuit portions of the circuit board. At the same time, the fixing bracket 40 is also soldered to the circuit board at the fixing portion. Thus, the connector 1 is connected and fixed to the circuit board.

  In use, the movable member 50 is brought to the open position as shown in FIGS. 4A and 4B, and the opening 16 of the housing 11 is opened largely backward. The front end portion of the flat conductor F shown in FIG. 1 is inserted into the opening 16. In the state where the movable member 50 is in the open position shown in FIGS. 4A and 4B, the flat conductor F in FIG. 1 is in the open position with the contact portion 22 of the signal terminal 20 and the contact portion 32 of the support terminal 30. The front end edge of the flat conductor F is brought into contact with the rear surface of the front wall 14 of the housing 11 and brought to a predetermined insertion position. In this predetermined insertion position, the connection conductor portion exposed on the lower surface of the flat conductor F is located on the contact portion 22 of the corresponding signal terminal 20 and the contact portion 32 of the support terminal 30.

  Thereafter, an operating force is applied to the operating portion 53 of the movable member 50 to rotate the movable member 50 counterclockwise around the shaft portion 52 in FIGS. 4 (A) and 4 (B). Move to the closed position. In the closed position, the movable member 50 presses the flat conductor F downward with its pressing portion. The flat conductor F pressed by the movable member 50 presses the contact portion 22 of the signal terminal 20 and the contact portion 32 of the support terminal 30 downward and elastically displaces them. Thus, the signal terminal 20 and the support terminal 30 are electrically connected to the corresponding connection conductor portion of the flat conductor F with contact pressure (contact force) by the contact portion 22 and the contact portion 32. The support terminal 30 functions as a ground terminal when the corresponding connection conductor portion of the flat conductor F and the corresponding circuit portion of the circuit board are ground circuits. Various arrangements of these terminals 20 and 30 can be freely set. When the signal terminal 20 is represented by S, the ground terminal by the support terminal 30 is represented by G, the low-speed signal terminal is represented by L, and the power supply terminal is represented by D,... GSGSGSSG... GSGSLGDDD. For example, an array with a small number of ground terminals such as GSSSSSGSSSSSG.

  In the present invention, the signal terminal 20 is formed as one straight arm-shaped member. Therefore, since the transmission path is formed between the contact portion 22 and the connection portion 21 with the shortest straight distance, and there is no portion that forms a detour path, the influence of the stub can be reduced, and high-speed signal transmission is preferable. Moreover, since the support terminal 30 can be a ground terminal, the support terminal 30 is positioned between the signal terminals 20 to provide a shielding effect.

  In the present embodiment, the arm portion 30A of the support terminal 30 has the same shape as the signal terminal 20 and the terminal groove 18 has a common shape with respect to both the terminals 20 and 30, so that both terminals are selective. Can be inserted into any of the terminal grooves, providing flexibility in the arrangement of the terminals. Furthermore, if the signal terminal 20 and the arm portion of the support terminal (ground terminal) 30 have the same shape, the contact pressures at the contact portions are all the same, and a stable contact force is obtained.

  In the present embodiment, the support terminal 30 can be used not only as a ground terminal but also as a signal terminal or a power supply terminal as required. When used as a signal terminal, since the support arm portion 35 exists between the contact portion 32 and the connection portion 31 via the coupling portion 34, it is for a low-speed signal that does not affect the transmission speed. It is preferable.

1 Connector 23 Fixed part
DESCRIPTION OF SYMBOLS 11 Housing 30 Support terminal 13 Lower wall 30A Arm part 15 Upper wall 31 Connection part 16 Receiving part (opening part) 32 Contact part 18 Terminal groove 33 Fixed part 18B Front area 34 Connection part 19 Fixed part 35 Support arm part 20 Signal terminal 36 Support part 21 Connection part F Flat conductor 22 Contact part

Claims (2)

A signal terminal having a contact portion for contact with a flat conductor inserted forward into the receiving portion of the housing and a support terminal are formed by maintaining a flat plate surface of the metal plate, and a terminal groove of the housing In the flat conductor electrical connector inserted into and held in a direction perpendicular to the plate surface,
The signal terminal extends in the front-rear direction and forms an arm-like member in which a contact portion and a connection portion for soldering to the circuit board outside the housing are formed at different positions.
The support terminal includes an arm portion extending in the front-rear direction and having a contact portion formed thereon, a support arm portion positioned on the opposite side of the arm portion with respect to the flat conductor, and the arm portion. A support portion that connects the support arm portion, and a support portion that movably supports a movable member for pressurizing the flat conductor is formed at a tip portion of the support arm portion,
The signal terminal has a fixed portion that is press-fitted into a corresponding fixing portion of the terminal groove, in a portion between the contact portion and the connection portion, and the support terminal is in a portion between the contact portion and the connection portion, respectively.
The terminal groove is formed between the upper wall and the lower wall of the housing so that both the signal terminal and the support terminal can be selectively inserted, and an island-shaped fixing portion is formed in the terminal groove. The fixed portion of the signal terminal or the support terminal is fixed by pressure input acting in the vertical direction between the fixed portion and the lower wall, and at least some of the terminal grooves are The distance between the inner wall surfaces of the grooves in the direction perpendicular to the plate surface is the same direction for guiding and inserting the terminal in the front region formed by the island-shaped fixing portion and the front portion of the fixing portion. An electrical connector for a flat conductor having a wide width that is larger than a guide groove width in   The terminal groove is narrower than the groove width in the above wide area on the upper end groove surface or lower end groove surface of the terminal groove corresponding to at least one of the upper end edge and the lower end edge of the terminal within a wide range in the front-rear direction. The flat connector electrical connector according to claim 1, comprising a narrow groove formed.

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