JP5362762B2 - Circuit board electrical connector - Google Patents

Description

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

  When an electrical connector for circuit board that is arranged on a circuit board and is connected to a flat conductor is used as a connector for high-speed transmission, it is desired that signal terminals for transmitting high-speed signals are made straight with few stubs. For example, a connector disclosed in Patent Document 1 is known as a connector for high-speed transmission in which straight signal terminals are arranged and held in a housing.

  The connector of Patent Document 1 is an electrical connector for a circuit board that accepts a flat conductor from the rear, and a straight terminal for high-speed transmission is press-fitted from the front into a terminal holding groove of a housing that penetrates in the front-rear direction and is held. ing. When press-fitting a terminal, the front end surface of the terminal is usually pressed. The terminal is made by punching a metal plate while maintaining the plate surface, and the front end portion extends out of the housing at a position below the other portion, and the lower edge is connected to the circuit board by soldering. The rear end portion has a contact portion that contacts the flat conductor. In addition, two protrusions protruding from the upper edge are formed at an intermediate position in the front-rear direction of the terminal, and are engaged with the inner surface of the terminal holding groove.

  Further, the front end portion of the terminal has a portion protruding rearward at a position above the connection portion, and this portion is a carrier separation portion that is cut and separated from the carrier before the terminal is press-fitted. it is conceivable that. The carrier separation portion is located below the upper edge of the intermediate position of the terminal.

Japanese Patent No. 4570107

  In general, the terminals for high-speed transmission have a straight shape to ensure high-speed transmission characteristics, and the height in the vertical direction is reduced to reduce the height in order to reduce the size of the connector. On the other hand, in order to ensure the connection strength between the terminal and the carrier at the time of manufacturing the terminal, it is preferable that the carrier separation portion has a large dimension in the vertical direction, that is, the connection width. Therefore, the carrier separation part occupies most of the terminals in Patent Document 1 in the vertical direction of the front end part.

  When the front end surface of the terminal is pressed with a press-fitting member and press-fitted into the terminal holding groove, the larger the area of the pressed surface pressed by the press-fitting member, the more stable the terminal posture and the easier the press-fitting. That is, since the plate thickness of the terminal is constant, it is preferable that the vertical dimension on the pressure-receiving surface is large. Therefore, in Patent Document 1, the front end surface of the carrier separating portion having a relatively large vertical dimension among the front end surfaces of the terminals is most easily pressed. However, since the carrier separation portion is located below the upper edge of the intermediate position where the press-fitting protrusion is formed, a moment that is the product of the distance of the deviation and the pressure input acts. Therefore, the rear end side of the terminal tends to tilt in the vertical direction during press-fitting, and the posture is difficult to stabilize.

  Therefore, in order to stabilize the posture of the terminal at the time of press-fitting, when trying to press the front end surface of the portion other than the carrier separation portion as the pressure-receiving surface, it is necessary to ensure a large vertical dimension on the pressure-receiving surface. However, for that purpose, the vertical dimension of the front end portion of the terminal itself must be increased, and the terminal is not in a straight shape, so that there is a possibility that the high-speed transmission characteristic is deteriorated.

  Further, the front end face of the carrier separating portion, that is, the cut end face with the carrier is not plated and has low solder wettability. Therefore, in order to improve the solder wettability at the connection portion, it is necessary to form the carrier separation portion at a position above the connection portion so that the carrier separation portion is separated from the connection portion by a sufficient distance in the vertical direction. is there. In other words, it is impossible to reduce the height of the terminal by forming the carrier separation portion at a position close to the connection portion in the vertical direction.

  In view of such circumstances, an object of the present invention is to provide an electrical connector for a circuit board capable of press-fitting a terminal in a stable posture without increasing the vertical dimension of the terminal.

  An electrical connector for a circuit board according to the present invention is an electrical connector for a circuit board having a housing disposed on the circuit board and receiving a flat conductor from the rear, and a plurality of terminals arranged and held in the housing, A plurality of terminal holding grooves for holding the plurality of terminals, respectively, and the terminal holding grooves for holding at least some of the plurality of terminals are formed penetrating in the front-rear direction. At least some of the terminals are maintained in the state of being connected to the carrier, punched out of the metal plate while being punched out of the metal plate, separated from the carrier, and formed in a straight shape extending in the front-rear direction at one end. Has a contact portion that contacts the flat conductor, and at the other end is connected to the corresponding circuit portion of the circuit board at the lower edge, and is located above the connection portion and cut and separated from the carrier. Ki A press-fit protrusion that protrudes from the upper edge of the terminal and engages with the inner surface of the terminal holding groove is formed at an intermediate position in the front-rear direction having a rear separation portion, and the terminal is connected to the carrier from the carrier. After the separation part is separated, it is press-fitted into the terminal holding groove from the front or the rear.

  In such an electrical connector for circuit board, in the present invention, the carrier separating portion is characterized in that a cut end surface with the carrier is located in a range including the upper edge at the intermediate position in the vertical direction.

  In the present invention, the cut end surface of the carrier separating portion of the terminal is located in a range including the upper edge in which the press-fitting protrusion is formed at the intermediate position of the terminal in the vertical direction. Therefore, if the terminal is pressed with the cut end face as the pressed surface when the terminal is pressed, pressure input acts at a position that does not deviate much in the vertical direction with respect to the upper edge, so there is almost no moment around the press-fitting protrusion. . As a result, when the cut end face is pressed forward or backward at the time of terminal press-fitting, the terminal is press-fitted while maintaining a stable posture without being inclined in the vertical direction. Here, the “range including the upper edge in the vertical direction” includes the case where the upper end position or the lower end position of the range is the same position as the upper edge.

  The terminal according to claim 1, further comprising a movable member that rotates between an open position where the flat conductor can be received and a closed position where the flat conductor is pressed toward the contact portion of the terminal. In addition to the first terminal as the signal terminal, the housing also has a second terminal as a support terminal for rotatably supporting the movable member, and the housing has a terminal holding groove for holding the second terminal penetrating in the front-rear direction. The second terminal is formed by punching the metal plate while maintaining the plate surface in a state of being connected to the carrier, and is separated from the carrier and extends in the front-rear direction. An upper arm portion that extends in the front-rear direction at a position above the lower arm portion and is connected to the lower arm portion via a connecting portion, and the lower arm portion has one end in contact with the flat conductor A connection part connected to the corresponding circuit part of the circuit board at the lower edge at the other end and the connection part. Has a carrier separation portion that is located above and cut and separated from the carrier, and a press-fitting projection that protrudes from the upper edge of the terminal and engages with the inner surface of the terminal holding groove is formed at an intermediate position in the front-rear direction. The carrier separating portion is located in a range in which the cut end surface with the carrier includes the upper edge in the vertical direction at the intermediate position, and the upper arm portion is pivotally supported to pivotably support the movable member. The support part is formed at one end on the free end side, the other end is connected to the connecting part, and the second terminal is press-fitted into the terminal holding groove in the same direction as the press-fitting direction of the first terminal. It is good.

  For both the first terminal and the second terminal, by forming the carrier separating portion so that the cut end surface of the carrier separating portion is located in a range including the upper edge of the intermediate position of the terminal in the vertical direction, a stable posture is achieved. It becomes possible to press-fit both terminals. In addition, after connector assembly, while maintaining the stable posture of both terminals, it is possible to secure high-speed transmission characteristics and reduce the height with the straight first terminal, and to turn the movable member with the second terminal By supporting, the operability for connecting the connector and the flat conductor can be improved.

  It is preferable that the cut end surface of the carrier separation portion of the first terminal and the cut end surface of the carrier separation portion of the second terminal are formed at the same position in the vertical direction. By forming both cut end faces at the same position, when designing the first terminal and the second terminal, both terminals can be designed based on the same position. It becomes easy. In addition, a common jig can be used at the time of terminal press-fitting at the carrier separation unit.

  The second terminal may be a ground terminal. By forming a plurality of ground-ground structures, high-speed transmission characteristics at the first terminal can be improved.

  As described above, in the present invention, the cutting end surface of the carrier separating portion of the terminal is located in a range including the upper edge in the vertical direction at the intermediate position of the terminal. If the terminal is pressed with the end face as the pressure-receiving surface, the terminal can be press-fitted in a stable posture without being inclined in the vertical direction. In addition, by making the cut end surface of the carrier separation portion a pressure-receiving surface, it is not necessary to provide a pressure-receiving surface in other portions, and a large vertical dimension of the pressure-receiving surface can be secured. Therefore, since it is not necessary to increase the vertical dimension of the terminal, the terminal can be made substantially straight, and the high-speed transmission characteristic of the terminal can be prevented from being deteriorated. Furthermore, since it is not necessary to increase the vertical dimension of the terminal, it is not necessary to avoid the enlargement of the terminal in the vertical direction by forming the carrier separation part in the vicinity of the connection part. Therefore, the cut end surface of the carrier separation portion having low solder wettability can be positioned at a sufficient distance from the connection portion in the vertical direction, so that a sufficient amount of solder is applied to the connection portion to ensure solder connection. It is possible to avoid flux increase. In general, since the carrier separating portion is located at the rearmost end of the terminal in the terminal press-fitting direction, the press-fitting operation becomes easy.

1 is an overall perspective view of a connector according to a first embodiment. (A) is IIA-IIA sectional drawing of the connector of FIG. 1, and shows the cross section in the position of a 1st terminal, (B) is IIB-IIB sectional drawing of the connector of FIG. The cross section in is shown. It is a perspective view which shows the process of pressing-in a 1st terminal to the terminal holding groove of the connector of FIG. It is sectional drawing which shows the process of pressing-in a 1st terminal to the terminal holding groove of the connector of FIG. It is sectional drawing in the position of the 1st terminal of the connector which concerns on 2nd embodiment. (A) is sectional drawing in the position of the 1st terminal of the connector which concerns on 3rd embodiment, (B) is sectional drawing in the position of the 1st terminal of the connector which concerns on the modification of 3rd embodiment. .

  Embodiments of an electrical connector for a circuit board according to the present invention will be described below with reference to the accompanying drawings.

<First embodiment>
FIG. 1 is an overall perspective view of the circuit board connector according to the present embodiment. 2A is a cross-sectional view taken along the line IIA-IIA of the connector of FIG. 1, showing a cross-section at the position of the first terminal, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB of the connector of FIG. The cross section at the position of two terminals is shown.

  A circuit board connector 1 (hereinafter referred to as “connector 1”) according to this embodiment is arranged on a circuit board (not shown), and a flat conductor (not shown) is connected from the rear (upper left in FIG. 1). The connector is a connector for high-speed transmission, and 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 where the flat conductor can be inserted into the connector main body 10 from the rear to the front and a closed position where the inserted flat conductor is pressed. In FIG. 1, the movable member 50 is in the closed position, and the outer shape of the connector 1 is a substantially rectangular parallelepiped.

  The flat conductor connected to the connector 1 exposes the connecting conductor portion on the lower surface of the front end portion, and the front end portion is inserted into the connector 1 so as to be in contact with a contact portion of a terminal described later.

  As shown in FIG. 1, the connector body 10 includes a housing 11 made of an electrically insulating material, a first terminal 20 as a signal terminal for high-speed transmission held by the housing 11, and a second terminal as a ground terminal. The terminal 30 and the fixture 40 are included. Hereinafter, the second terminal 30 of the first terminal 20 is also collectively referred to as terminals 20 and 30. The first terminal 20 and the second terminal 30 are terminals having different shapes, and two first terminals 20 are arranged with the longitudinal direction of the housing 11 as an arrangement direction, and the second terminal 30 is arranged next to the first terminal 20. , Is positioned to repeat that. The fixture 40 is located outside the arrangement range of the terminals 20 and 30. The order of arrangement of the first terminals 20 and the second terminals 30 is not limited to the order in the present embodiment, and can be freely set in various ways.

  The housing 11 includes a side wall 12 located at both ends in the terminal arrangement direction, a bottom wall 13 (see FIGS. 2A and 2B) connecting both side walls 12 at their lower portions, and a front side (see FIG. 1). The front wall 14 located on the lower right side and the upper wall 15 located on the front wall 14 are integrally provided. 2A and 2B, the rear half of the housing 11 has an opening opened above and below the bottom wall 13 and between both side walls 12 upward and rearward. A portion 16 is formed. The opening 16 functions as a receiving portion for inserting a flat conductor, and as a space for disposing and moving the movable member 50 described above.

  A supporting groove (not shown) for a fixing metal member 40 made of a metal plate is formed in the housing 11 along the inner surface of the side wall 12 so as to extend in the front-rear direction. It is attached from. The fixing bracket 40 slightly protrudes from the bottom surface of the housing 11 and is soldered to a corresponding portion of a circuit board (not shown) to serve to fix the housing 11.

  As shown in FIG. 1, a plurality of terminal holding grooves 18 for accommodating and holding the terminals 20 and 30 are arranged between both the supporting grooves. Each of the terminals 20 and 30 is made while maintaining a flat plate surface of a metal plate. Therefore, the terminal holding groove 18 is also a slit-like groove adapted to the plate thickness. As shown in FIGS. 2A and 2B, a plurality of terminal holding grooves 18 are formed in the direction perpendicular to the paper with a groove width corresponding to the plate thickness of the terminals 20 and 30, and are arranged in the front-rear direction (see FIG. 2). 2 (A) and (B) are formed penetrating in the left-right direction).

  As shown in FIGS. 2A and 2B, the terminal holding groove 18 penetrates the front wall 14 between the upper wall 15 and the bottom wall 13 of the housing 11 in the front-rear direction, and has an opening 16. In the latter half part in which is formed, it extends to the upper surface of the bottom wall 13. In the terminal holding groove 18, an island-shaped fixing portion 19 is provided between the upper wall 15 and the bottom wall 13 in the vertical direction at the rear portion of the front wall 14. As shown in FIG. 2 (A), the terminal holding groove 18 has an upper region 18A on the upper side, a lower region 18B on the lower side, and a connection region that allows both regions to communicate with each other on the front side. 18C, and further divided into an open area 18D formed in the portion of the bottom wall 13 corresponding to the opening 16 in the front-rear direction. In these, the upper region 18A, the lower region 18B, the connecting region 18C and the open region 18D communicate with each other.

  The terminal holding groove 18 has the groove bottom of the open area 18D positioned one step lower than the groove bottom of the lower area 18B. Accordingly, the contact portions 22 and 31B of the terminals 20 and 30 described later are allowed to be displaced downward, and even if the flux rises when the terminals 20 and 30 are soldered, the flux is contacted by the contact portions 22 and 31B. It will form a gap that prevents reaching the maximum. It is not essential that the groove bottom in the open area of the terminal holding groove is positioned one step below the groove bottom in the lower area, and if a gap allowing the downward displacement of the contact portion of the terminal is secured, The groove bottom in the open area may be formed at the same position as the groove bottom in the lower area in the vertical direction.

  As shown in FIGS. 2A and 2B, the terminal holding groove 18 formed in this way is also inserted into the terminal holding groove 18 into which the first terminal 20 is inserted and into the second terminal 30. The terminal holding groove 18 is also formed in the same shape. Therefore, the first terminal 20 and the second terminal 30 can be selectively inserted into any terminal holding groove 18.

  As described above, the first terminal 20 is a signal terminal for high-speed transmission, and is separated from the carrier (see FIG. 3) after punching the metal plate while maintaining the plate surface in a state of being connected to the carrier. Has been made. As shown in FIG. 2A, the first terminal 20 is formed as a straight arm-like member extending in the front-rear direction, and has a connection portion 21 at the front end portion, a contact portion 22 at the rear end portion, and a front-rear direction. Two press-fit protrusions 23 as fixed parts are provided in the middle part in the direction.

  The first terminal 20 extends rearward (leftward in FIG. 2A) to the middle portion of the housing 11, and the contact portion 22 protrudes upward at the rear end of the first terminal 20. It is provided and comes into contact with a corresponding circuit portion formed on the lower surface of a flat conductor (not shown). A front end portion of the first terminal 20 is formed as a portion protruding outside the housing 11 and bent downward, and a lower portion of the front end portion is formed as the connection portion 21. The lower edge of the connection portion 21 is located below the bottom surface of the housing 11 and is soldered to the corresponding circuit portion of the circuit board when disposed on the circuit board (not shown). It has become.

  The press-fitting protrusions 23 are formed at two locations protruding from the upper edge of the intermediate part. Of the two press-fit protrusions 23, the rear press-fit protrusion 23A located at the rear has a slightly smaller projection than the forward press-fit protrusion 23B located at the front. The rear press-fitting protrusion 23A has a function of stabilizing the position of the first terminal 20 in the vertical direction and guiding the first terminal 20 in the press-fitting process of the first terminal 20 into the terminal holding groove 18. The upper end of the rear press-fitting protrusion 23 </ b> A is formed with a protruding amount so as to contact the lower surface of the fixed portion 19. On the other hand, the front press-fit protrusion 23B has a function of fixing the first terminal 20 in the terminal holding groove 18, and the protrusion amount is such that the upper end of the front press-fit protrusion 23B bites into the lower surface of the fixing part 19. It is formed with.

  The first terminal 20 formed in this way is press-fitted from the front between the island-like fixing portion 19 of the terminal holding groove 18 of the housing 11 and the bottom wall 13 and forms the inner wall surface of the terminal holding groove 18. The press-fitting protrusion 23B bites into the lower surface of 19 and the fixing position is determined. The rear portion of the first 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 holding groove 18, and can be elastically bent downward. It has become. That is, when the contact portion 22 receives a downward force from the flat conductor, the contact portion 22 can be elastically displaced downward.

  At the front end portion of the first terminal 20, a carrier separation portion 24 cut and separated from the carrier is formed above the connection portion 21. The front end face of the carrier separation portion 24 forms the foremost end edge of the first terminal 20 as can be seen in FIG. The cut end surface (front end surface) of the carrier separation portion 24 with the carrier is a flat surface extending in the vertical direction. Since the cut end surface is the front end surface, when the first terminal 20 is press-fitted into the terminal holding groove 18 of the housing 11 from the front by a pressing member (jig), the entire flat surface is pressed. It is used as a pressure-receiving surface pressed by a member. Thus, since the cutting end surface as the pressure-receiving surface is positioned at the foremost end, in other words, at the rearmost end in the terminal press-fitting direction, the carrier separating portion 24 is easy to press-fit the first terminal 20. In addition, it is not essential that the carrier separation part is the foremost edge of the first terminal. For example, the front edge of the connection part may be the foremost edge. In this case, it is only necessary to press only the front end edge of the carrier separating portion with the pressing member without bringing the pressing member into contact with the front end edge of the connecting portion.

  In addition, by making the cut end surface of the carrier separating portion 24 a pressure-receiving surface, it is not necessary to provide a pressure-receiving surface at other portions, and a large vertical dimension of the pressure-receiving surface can be secured. Accordingly, since it is not necessary to increase the vertical dimension of the front end portion of the first terminal 20, the first terminal 20 can be made substantially straight, and the high-speed transmission characteristics of the first terminal 20 can be prevented from being deteriorated. Furthermore, since it is not necessary to increase the vertical dimension of the front end portion of the first terminal 20, it is necessary to form the carrier separation portion 24 at a position close to the connection portion 21 to avoid an increase in the size of the first terminal 20 in the vertical direction. Disappears. Accordingly, the cut end surface of the carrier separation portion 24 having low solder wettability can be positioned at a sufficient distance from the connection portion 21 in the vertical direction, so that a sufficient amount of solder can be applied to the connection portion 21 without fail. In addition to soldering, the flux can be prevented from rising.

  As shown in FIG. 2A, the cut end surface of the carrier separating portion 24 has the upper edge of the cut end surface at the same position as the upper edge of the intermediate portion in the front-rear direction of the first terminal 20 in the vertical direction. is there. In other words, the upper end of the cut end face is located close to the press-fit protrusion 23 below the press-fit protrusion 23 protruding from the upper edge of the intermediate portion. In addition, the lower end portion of the cut end surface is in a position close to the lower edge of the intermediate portion of the first terminal 20. Since the upper end of the cut end face is not so shifted in the vertical direction from the upper edge of the intermediate part, when the first cut end face is pressed rearward when the first terminal 20 is pressed, There is almost no moment and the first terminal 20 can be press-fitted while maintaining a stable posture without the rear end of the first terminal 20 being inclined in the vertical direction.

  As described above, the second terminal 30 is used as a ground terminal, and also has a function as a support terminal that rotatably supports the movable member 50. Similarly to the first terminal 20, the second terminal 30 is made by being separated from the carrier after punching a metal plate while maintaining the plate surface in a state of being connected to a carrier (not shown). . As shown in FIG. 2B, the second terminal 30 has an upper arm portion 32 extending in the front-rear direction at a position above the lower arm portion 31 in addition to the lower arm portion 31 having the same shape as the first terminal 20. And a connecting portion 33 that extends in the vertical direction and connects the front end portions of the lower arm portion 31 and the upper arm portion 32 to each other.

  The lower arm portion 31 has the same shape as the first terminal 20 as described above, the connection portion 31A and the carrier separation portion 31D at the front end portion, the contact portion 31B at the rear end portion, and the two fixed portions at the intermediate portion. The rear press-fitting protrusion 31C-1 and the front press-fitting protrusion 31C-2 (also collectively referred to as “press-fitting protrusion 31C”) are provided. Similarly to the case of the first terminal 20, the lower arm portion 31 can be elastically bent at the rear portion and the contact portion 31B can be elastically displaced. Further, the carrier separation portion 31D is formed at the same position as the carrier separation portion 24 of the first terminal 20 in the front-rear direction and the up-down direction. That is, the cut end surface of the carrier separation portion 24 of the first terminal 20 and the cut end surface of the carrier separation portion 31D of the second terminal 30 are formed at the same position in the front-rear direction and the vertical direction. In this way, by forming the cut end faces of both the first terminal 20 and the second terminal 30 at the same position, the first terminal is based on the same position when the first terminal 20 and the second terminal 30 are designed. Since the 20 and the second terminal 30 can be designed, it is easy to design the terminal and manufacture the mold. Moreover, it is not necessary to change the position of the pressing member for press-fitting the first terminal 20 and the second terminal 30.

  The upper arm portion 32 penetrates between the fixed portion 19 and the upper wall 15 and extends rearward, and has a wider width (a vertical dimension in the drawing) than the lower arm portion 31 positioned below the upper arm portion 32. Made of high rigidity. On the lower edge of the rear end of the upper arm portion 32, a concavely curved support portion 32A is formed. The upper arm 32 extends rearward while maintaining a slight gap between the upper edge of the upper arm 32 and the upper wall 15.

  The connecting portion 33 extends in the vertical direction at a position in front of the island-shaped fixing portion 19 of the housing 11 and connects the front end portions of the lower arm portion 31 and the upper arm portion 32 to each other.

  When the second terminal 30 is inserted into the terminal holding groove 18 from the front to the rear, the lower arm portion 31 is located between the island-shaped fixing portion 19 and the bottom wall 13 in the same manner as the first terminal 20. The upper arm portion 32 is disposed between the fixed portion 19 and the upper wall 15.

  2B, the cut end surface of the carrier separating portion 31D of the second terminal 30 has an upper end in the vertical direction with respect to the upper edge of the middle portion of the lower arm portion 31 of the second terminal 30 at the upper end of the cut end surface. At the same position. That is, similarly to the first terminal 20, the cut end surface of the carrier separating portion 31 </ b> D is also in the same position in the vertical direction as the upper edge of the intermediate portion of the second terminal 30, and the upper end of the cut end surface is Since it is located close to the press-fitting protrusion 31C in the direction, it can be press-fitted while maintaining a stable posture.

  In the present embodiment, the first terminal 20 and the second terminal 30 are arranged such that one second terminal 30 is positioned adjacent to the two first terminals 20 in the terminal arrangement direction. Since 30 is used as a ground terminal for the first terminal 20, a plurality of ground ground structures are formed, and high-speed transmission characteristics at the first terminal 20 are improved.

  The movable member 50 is made of an electrically insulating material similar to that of the housing 11 and has a width extending between both side walls 12 of the housing 11 as shown in FIG. As seen in B), it is arranged in the opening 16 of the housing 11. The movable member 50 has an open position in which the cross-sectional shape perpendicular to the terminal arrangement direction is in a vertical position in which the vertical direction extends in the vertical direction, and the cross-sectional shape is in the front-rear direction as shown in FIGS. It is supported so as to be rotatable between a closed position in a lateral posture extending in the direction.

  2A and 2B, the movable member 50 has a groove portion in the front portion at a position corresponding to the terminals 20 and 30 in the terminal arrangement direction (direction perpendicular to the paper surface). 51 is formed. The groove 51 penetrates in the vertical direction in FIGS. 2A and 2B, and a shaft portion 52 that connects the groove inner surfaces facing each other (opposing in a direction perpendicular to the paper surface) at the front end position. Is provided. The shaft portion 52 has a substantially circular peripheral surface and is rotatably supported in a support portion 32A formed in a concavely curved shape on the upper arm portion 32 of the second terminal 30. However, since the first terminal 20 does not have an upper arm portion like the second terminal 30, as shown in FIG. 2 (A), the shaft portion 52 positioned corresponding to the first terminal 20 is not supported at all. It has not been. The groove portion of the movable member may be formed only at a position corresponding to the second terminal.

  The movable member 50 is rotatably supported by the housing 11 at a shaft portion (not shown) at both ends in the width direction (terminal arrangement direction). 2A and 2B, the movable member 50 forms an operation portion 53 at the rear portion where the groove portion 51 is not formed, and the upper surface of the movable member 50 is the upper wall 15 of the housing 11. Located at the same level as the top surface. 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 lower surface from the front end portion to the operation portion 53 in the closed position shown in FIGS. 2A and 2B forms a pressurizing portion that presses the flat conductor at the closed position. In addition, it is not essential that the upper surface of the movable member is at the same level position as the upper surface of the upper wall of the housing in the closed position.

  Next, the press-fitting process of the first terminal 20 will be described. Since the press-fitting process of the second terminal 30 is the same as the press-fitting process of the first terminal 20, the description thereof is omitted. 3 and 4 are a perspective view and a cross-sectional view showing a process of press-fitting the first terminal 20 into the terminal holding groove 18 of the housing 11. In the present embodiment, among the plurality of terminal holding grooves 18 corresponding to the first terminal 20, the first terminals 20 are press-fitted in order from the terminal holding groove 18 at the lowermost left in FIG. 3. FIG. 3 shows a state before only the first terminal 20 is press-fitted into the uppermost right terminal holding groove 18 among the plurality of terminal holding grooves 18 corresponding to the first terminal 20. As can be seen in FIG. 3, in the present embodiment, the plurality of first terminals 20 are made by punching a metal plate in a state of being connected to one carrier C.

  The first terminal 20 is press-fitted into the terminal holding groove 18 in the following process. First, among the terminal holding grooves 18 corresponding to the first terminals 20, the leftmost lower terminal holding groove 18 in FIG. 3 (in this embodiment, the second terminal holding groove 18 from the lower left side) in front (FIG. 3). In the lower right), one of the plurality of first terminals 20 with the carrier C continuous in the vertical direction (the upper first terminal 20 in FIG. 3) is positioned. Next, the carrier separation portion 24 of the first terminal 20 is cut and separated from the carrier C, the plate surface of the first terminal 20 is sandwiched, and the first terminal 20 is directed rearward to the second terminal. Insert into the holding groove 18. Cutting, separation, clamping and insertion of the first terminal 20 are performed by the same jig. As shown in FIG. 4, the first terminal 20 is inserted until the rear press-fitting protrusion 23 </ b> A of the first terminal 20 is positioned below the fixed portion 19. The first terminal 20 is in a state where the rear press-fitting protrusion 23 </ b> A is in contact with the lower surface of the fixed portion 19 and temporarily held in the terminal holding groove 18.

  Next, the temporarily held first terminal 20 has its cutting end surface (front end surface) of the carrier separation portion 24 pressed rearward by a pressing member (not shown) as a jig, and the inside of the terminal holding groove 18. Is completely press-fitted into. As a result, as shown in FIG. 2A, the first terminal 20 moves rearward from the temporary holding position, and the front press-fitting protrusion 23B bites into the lower surface of the fixing portion 19 of the housing 11 to hold the terminal. It is securely held at the final holding position in the groove 18.

  Next, the housing 11 moves to the lower left of FIG. 3 by one terminal holding groove 18 (arrow A). Also, after the movement of the housing 11 or at the same time, the carrier C moves upward by one first terminal 20 (arrow B), and another carrier adjacent to the terminal holding groove 18 into which the first terminal 20 has already been press-fitted. The press-fitting of the first terminal 20 provided in front of the terminal holding groove 18 and corresponding to the other terminal holding groove 18 is performed in the above-described process. Here, the housing 11 is moved by one terminal holding groove 18, but another terminal holding groove 18 adjacent to the terminal holding groove 18 in which the first terminal 20 is temporarily held is connected to the second terminal 30. If it corresponds, the housing 11 moves in the direction of arrow A by two terminal holding grooves 18.

  In this way, all the first terminals 20 are sequentially press-fitted into the corresponding terminal holding grooves 18, whereby the first terminal press-fitting process is completed. Then, after the press-in process of the first terminal 20 is completed, the second terminal 30 is also press-fitted into the corresponding terminal holding groove 18 through the same process.

  The connector 1 of the present embodiment is used by being attached to a circuit board (not shown) after the terminals 20 and 30, the fixture 40 and the movable member 50 are assembled. As for the 1st terminal 20 and the 2nd terminal 30, those connection parts 21 and the connection part 31A are solder-connected with the corresponding | compatible circuit part of a 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.

  When connecting to the flat conductor, first, the movable member 50 is brought to the open position in the vertical position, and the opening 16 of the housing 11 is greatly opened rearward, and the flat conductor is inserted into the opening 16. Insert the front end. The flat conductor is inserted forward between the contact portions 22 and 31B of the terminals 20 and 30 and the movable member 50, and the front end edge of the flat conductor abuts against the rear surface of the front wall 14 of the housing 11 and a predetermined insertion position. Brought to you. In this predetermined insertion position, the connection conductor portion exposed on the lower surface of the flat conductor is located on the contact portions 22 and 31B of the corresponding terminals 20 and 30.

  Thereafter, an operating force is applied to the operating portion 53 of the movable member 50 to rotate and move the movable member 50 to the closed position in the horizontal position as seen in FIGS. When the movable member 50 is rotated, the pressing conductor presses the flat conductor downward. The flat conductor pressed by the movable member 50 presses the contact portions 22 and 31B of the terminals 20 and 30 downward and elastically displaces them. In this way, the first terminal 20 and the second terminal 30 are electrically connected to the corresponding connection conductor portion of the flat conductor with contact pressure (contact force) by the contact portion 22 and the contact portion 31B.

  In the present embodiment, the cutting end surface of the carrier separation portion is a flat surface, and the entire area of the cutting end surface functions as a pressure-receiving surface. Instead, the cutting end surface is a convex curved surface, a concave curved surface, or an uneven surface. It may be a surface. In this case, the portion located at the foremost end of the cut end surface functions as a pressure-receiving surface.

  In the present embodiment, the first terminal and the second terminal are press-fitted from the front, but may be press-fitted from the rear instead. Further, either one of the first terminal and the second terminal may be press-fitted from the front, and the other may be press-fitted from the rear. In the present embodiment, the lower arm portion of the second terminal has the same shape as the first terminal. Instead, for example, the length of the lower arm portion of the second terminal is the first length. It may be longer or shorter than the terminals, and the positions of the contact portions of both terminals may be different in the front-rear direction. In the present embodiment, the second press-fit protrusion is formed on the upper edge of the middle part of the lower arm, but the position of the press-fit protrusion is not limited to this. For example, a press-fit protrusion may be formed on the upper edge of the upper arm portion, and the press-fit protrusion may bite into the lower surface of the upper wall of the housing.

  In the present embodiment, the second terminal is used as the ground terminal. However, instead, for example, it may be used as a signal terminal or a power supply terminal. In the present embodiment, two types of terminals, that is, the first terminal and the second terminal are provided. However, the number of types of terminals is not limited to this, and only one type of first terminal may be used. There may be three or more types including.

  The carrier separation portion of the first terminal may be located in a range in which the cut end surface with the carrier includes the upper edge of the intermediate portion of the terminal, that is, the upper edge where the press-fitting protrusion is formed in the vertical direction. The shape of the separation portion is not limited to the shape in which the upper end of the cut end surface is at the same position as the upper edge of the intermediate portion, like the first terminal 20 in the first embodiment. Hereinafter, various forms of the carrier separation unit will be described as a second embodiment and a third embodiment.

<Second embodiment>
The first terminal 60 according to the present embodiment shown in FIG. 5 is positioned such that the cut end surface of the carrier separating portion 64 extends to the upper edge of the intermediate portion of the first terminal 60 and above the press-fit protrusion 63. In this respect, the configuration is different from that of the first embodiment in which the upper end of the cutting end surface of the carrier separating portion is located at the same position as the upper edge of the intermediate portion, and the cutting end surface extends downward from the upper edge. Yes. Since the first terminal 60 of the present embodiment has the same shape as the first terminal 20 of the first embodiment except for the carrier separation part 64, the parts other than the carrier separation part 64 correspond to the first terminal 20. The reference numerals with “40” added are added to the portions, and the description is omitted. Moreover, since the housing 11 and the movable member 50 of this embodiment are the completely same structures as 1st embodiment, the code | symbol same as 1st embodiment is attached | subjected and description is abbreviate | omitted.

  As can be seen in FIG. 5, the first terminal 60 according to the present embodiment moves upward as the upper edge of the front end portion of the first terminal 60 moves forward in a range substantially corresponding to the connecting portion 61 in the front-rear direction. It is inclined, and the cut end surface of the carrier separating portion 64 extends above the upper edge of the intermediate portion of the first terminal 60 and the press-fitting protrusion 63. Further, the lower end portion of the cut end surface is located at the same position as the lower edge of the intermediate portion of the first terminal 60. Therefore, the cut end surface of the carrier separation portion 64 has a larger vertical dimension than the cut end surface of the carrier separation portion 24 of the first embodiment. Therefore, since the area is large correspondingly, the posture of the first terminal 60 at the time of press-fitting can be further stabilized.

  Further, the cut end surface of the carrier separating portion 64 is located in a range including the upper edge of the intermediate portion and the press-fitting protrusion 63 positioned between the contact portion 62 and the connecting portion 61 in the front-rear direction. . Therefore, compared with the first embodiment in which the press-fitting protrusion 23 is located outside the range of the cut end face of the carrier separation part 24, the moment around the press-fitting protrusion generated at the time of terminal press-fitting is reduced, and the first terminal 60 at the time of press-fitting is reduced. The posture can be further stabilized.

  Moreover, in 2nd embodiment, the upper edge of the front-end part of the 1st terminal 60 is formed so that it may incline upwards as it goes ahead. Therefore, as compared with the case where the vertical dimension (width dimension) of the entire front end portion of the first terminal 60 is simply increased, the portion located above the upper edge of the intermediate portion of the first terminal 60, that is, the stub is reduced. Therefore, it is possible to suppress a decrease in the high-speed transmission characteristics of the first terminal 60.

<Third embodiment>
In this embodiment shown in FIGS. 6 (A) and 6 (B), the rear contact surface 75A as a portion for contacting the fixed portion 19 of the housing 11 from the front and positioning the first terminal 70 in the front-rear direction is the first. The configuration of the terminal 70 is different from that of the first embodiment that does not have a portion that comes into contact with the fixing portion 19 from the front. Since the first terminal 70 of the present embodiment has the same shape as the first terminal 20 of the first embodiment except for the carrier separation part 74, the parts other than the carrier separation part 74 are the correspondence in the first terminal 20. A reference numeral with “50” added is attached to the portion, and the description is omitted. Moreover, since the housing 11 and the movable member 50 of this embodiment are the completely same structures as 1st embodiment, the code | symbol same as 1st embodiment is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 6 (A), the first terminal 70 in this embodiment has a range extending from a position close to the front press-fitting protrusion 73B to the front end of the first terminal 70 in the other part. It is formed as a wide portion 75 whose vertical dimension (width size) is larger than the upper portion, and the upper edge of the wide portion 75 is located above the upper edge of the intermediate portion of the first terminal 70 and the press-fitting protrusion 73. . The front end portion of the wide portion 75 is formed as a carrier separation portion 74.

  The rear contact surface 75A of the upper portion of the wide portion 75, that is, the surface located above the upper edge of the intermediate portion of the first terminal 70 can contact the front end portion of the fixed portion 19 from the front. Therefore, when the first terminal 70 is press-fitted, the rear contact surface 75A comes into contact with the front end portion of the fixed portion 19, and thus further press-fitting of the first terminal 70 is restricted. One terminal 70 can be positioned.

  Also in the present embodiment, as described in the second embodiment, the area of the cut end surface of the carrier separation portion 74 that is the pressure-receiving surface is large, and the cut end surface of the carrier separation portion 74 is in the vertical direction as described above. By being located in a range including the upper edge of the portion and the press-fitting protrusion 63, the stability of the posture of the first terminal 70 during press-fitting can be improved. Moreover, in this embodiment, since the vertical dimension of the carrier separation part 74 can be enlarged, the connection strength with the carrier can be further increased. Furthermore, even if the vertical dimension of the carrier separation portion 74 is increased, the cut end surface of the carrier separation portion is located at a sufficient distance from the connection portion 71 in the vertical direction. As a result, the solder can be securely connected and flux rise can be avoided.

  In the present embodiment, the rear end surface of the upper portion of the wide portion 75 of the first terminal 70 is used as the rear contact surface 75A so that it can contact the front end portion of the fixed portion 19 of the housing 11. Alternatively, if the positioning accuracy of the terminal can be sufficiently ensured, the rear end surface may not contact the front end portion of the fixed portion, and a gap may be formed between them. Even in such a configuration, the effects of improving the stability of the posture of the first terminal at the time of press-fitting, improving the connection strength with the carrier, reliable solder connection, and avoiding flux rise as described above can be obtained. .

  In this embodiment, the wide portion 75 is formed with a constant width dimension until it reaches the front end of the first terminal 70. Instead, as shown in FIG. 6B, the wide portion 75 is formed. The upper part of the front end of 75 may be cut out.

  Needless to say, the shape of the first terminal in the second and third embodiments described above can also be applied to the shape of the lower arm of the second terminal.

DESCRIPTION OF SYMBOLS 1 Connector 31C Press injection protrusion 11 Housing 31D Carrier separation part 18 Terminal holding groove 32 Upper arm part 20 First terminal 33 Connection part 21 Connection part 50 Movable member 22 Contact part 60 First terminal 23 Press injection protrusion 63 Press injection protrusion 24 Carrier separation Portion 64 Carrier separation portion 30 Second terminal 70 First terminal 31 Lower arm portion 73 Press-fit protrusion 31A Connection portion 74 Carrier separation portion 31B Contact portion

Claims (4)

A circuit board electrical connector having a housing arranged on a circuit board and receiving a flat conductor from behind and a plurality of terminals arranged and held in the housing, wherein the housing has a plurality of terminals each holding the plurality of terminals. A terminal holding groove is formed, and a fixing portion is provided between the top wall and the bottom wall of the housing in the vertical direction to form an island shape and connect the inner surface of the opposing groove of each terminal holding groove, and at least of the plurality of terminals A terminal holding groove for holding a part of the terminal is formed so as to penetrate in the front-rear direction, and at least a part of the plurality of terminals is a metal that maintains a plate surface while being connected to the carrier. After punching out the board, it is separated from the carrier and has a straight shape extending in the front-rear direction. One end has a contact portion that contacts the flat conductor, and the other end has a lower edge of the circuit board. Connected to the corresponding circuit It has a carrier separating part located above the connecting part and the connecting part and cut and separated from the carrier, and protrudes from the upper edge of the terminal at the intermediate position in the front-rear direction and engages with the inner surface of the terminal holding groove. A press-fit protrusion is formed, and the terminal is press-fitted into the terminal holding groove between the fixed part and the bottom wall in the vertical direction from the rear after separation of the carrier separation part from the carrier, and the press-fit protrusion is In the circuit board electrical connector biting into the lower surface of the fixed part ,
The carrier separating portion forms a pressure-receiving surface whose cutting end surface with the carrier is positioned at the foremost end of the terminal and receives a pressing force for terminal press-fitting, and from the bottom surface of the fixing portion in the vertical direction An electrical connector for a circuit board, wherein the electrical connector is located in a range including the upper surface of the circuit board. The terminal according to claim 1, further comprising a movable member that rotates between an open position where the flat conductor can be received and a closed position where the flat conductor is pressed toward the contact portion of the terminal. In addition to the first terminal as the signal terminal, the housing also has a second terminal as a support terminal for rotatably supporting the movable member, and the housing has a terminal holding groove for holding the second terminal penetrating in the front-rear direction. The second terminal is formed by punching the metal plate while maintaining the plate surface in a state of being connected to the carrier, and is separated from the carrier and extends in the front-rear direction. An upper arm portion that extends in the front-rear direction at a position above the lower arm portion and is connected to the lower arm portion via a connecting portion, and the lower arm portion has one end in contact with the flat conductor A connection part connected to the corresponding circuit part of the circuit board at the lower edge at the other end and the connection part. Has a carrier separation portion that is located above and cut and separated from the carrier, and a press-fitting projection that protrudes from the upper edge of the terminal and engages with the inner surface of the terminal holding groove is formed at an intermediate position in the front-rear direction. The carrier separating portion forms a pressure-receiving surface whose cutting end surface with the carrier is positioned at the foremost end of the terminal and receives a pressing force for terminal press-fitting, and from the bottom surface of the fixing portion in the vertical direction. The upper arm portion is located in a range including the upper surface of the wall, and the upper arm portion is formed with a rotation support portion that rotatably supports the movable member at one end on the free end side, and the other end connected to the connection portion. are, the second terminal is vertically lower arm portion of the second terminal is press-fitted into the terminal holding groove between the stationary portion and the bottom wall in the vertical direction in the same direction as the press-fitting direction of the first terminal pressed into the terminal holding groove between the stationary portion and the bottom wall in the direction pressed projection Electrical connector according to claim 1, that bites into the lower surface of the fixed part. 3. The circuit according to claim 2, wherein the cut end surface of the carrier separating portion of the first terminal and the cut end surface of the carrier separating portion of the second terminal are formed at the same position in the vertical direction and at the same position in the front and rear direction. Board electrical connector.   The electrical connector for circuit boards according to claim 2 or 3, wherein the second terminal is a ground terminal.

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