JP2014212007A - Electric connector for flat conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector for a flat type conductor in which a terminal has no variation of pressure-contact to a flat conductor between terminals.SOLUTION: An electric connector for a flat conductor has: plural terminals 20, 30 for pressure-pinching a flat conductor with a flexible support arm and a pressing arm; and a movable member 3 moving from an opening position to a closed position and elastically displacing the pressing arm. A gap C is formed between the support arm 22 of the terminal 20 and a bottom wall 15 of a housing 10 elastically displaceably in a range nearer one end than a coupling part 23 in a longitudinal direction while the flat conductor is not inserted. At least one of the supporting arm and the bottom wall 15 of the housing has a protrusion 27B, and the protrusion 27B that is elastically displaced within the range contacts the other after the flat conductor is inserted and after movement of the movable member to the closed position is completed.

Description

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

  As the flat conductor, a flexible substrate (FPC), a flat cable, and the like exist. Such flat conductors are often connected to electrical connectors attached to circuit boards. As a connector to which such a flat conductor is connected, for example, a connector disclosed in Patent Document 1 is known.

  The terminals in the connector of Patent Document 1 are made while maintaining the flat plate surface of the metal plate as it is, and many terminals are arranged at intervals in a direction perpendicular to the plate thickness. The terminal has a pressing arm portion and a supporting arm portion which are substantially parallel to each other, and both are connected by a connecting portion at an intermediate portion in the longitudinal direction thereof. Each terminal is inserted and accommodated in a terminal groove formed so as to penetrate left and right on the opposing inner surfaces of the upper wall and the bottom wall of the housing. A pressing arm portion is accommodated in the terminal groove on the upper wall side, and a supporting arm portion is accommodated in the terminal groove on the lower wall side. The support arm portion is fixedly held by the bottom wall of the housing at the right end side of the connecting portion.

  In Patent Document 1 having such a terminal, a flat conductor is provided from one end side in the longitudinal direction when the movable member is rotatably supported from the open position to the closed position and the movable member is in the open position. Is inserted between the pressing arm portion and the supporting arm portion, and a movable member having a cam located between the arm portions on the other end side is rotated toward the closed position, and the other end side of the pressing arm portion by the cam. The one end side of the pressing arm portion is elastically displaced toward the supporting arm portion by the lever principle to press the flat conductor to the supporting arm portion.

  When the movable member rotates from the open position to the closed position, the support arm portion pressed against the flat conductor is a protruding support portion provided on the upper edge of the one end side end from the position of the connecting portion. When the movable member is in the open position and this elastic displacement has not yet occurred, the lower edge opposite to the support portion is A gap that gradually widens toward one end is formed between the bottom wall, and when the movable member reaches the closed position, the support portion is pressed by the flat conductor and the support arm portion is elastically displaced. Thus, the gap disappears over the range from the position on the connecting portion side to the position of the support portion, and comes into contact with the bottom wall of the housing.

JP2010-044889A

  In the connector of Patent Document 1, when the flat conductor is not inserted in the open position of the movable member, the support arm portion of the terminal is between the position of the connecting portion and the position of the support portion at the tip. In the range, a gap is formed between the lower edge of the housing and the bottom wall of the housing, and the gap is designed to have a dimension that gradually increases from the position of the connecting portion toward the tip. Accordingly, when the flat conductor is inserted and the movable member is rotated toward the closed position, the gap is reduced from the position near the connecting portion as the elastic displacement amount of the supporting arm portion increases, and the supporting arm portion becomes the housing. The contact range begins to contact the bottom wall of the slab, and the contact range continuously expands to a position corresponding to the support portion at the tip. This means that the reaction force received by the support arm portion from the bottom wall of the housing gradually increases, and the support portion of the support arm portion contacts and supports the flat conductor by this reaction force. If the contact is performed at the circuit portion of the flat conductor, this is a contact pressure with respect to the circuit portion.

  Assuming that there are variations in dimensions due to the dimensions of the plurality of terminals at the time of manufacture or assembly into the housing, and the flatness of the contact surface of the flat conductor with respect to each terminal, That is, the contact pressure varies. If there is a variation in the above dimensions between terminals, the contact area between the support arm and the bottom wall of the housing increases from the position of the connecting part toward the end. In a state where the sizes of the ranges are different, the support arm portion balances with the force from the movable member via the flat conductor. In other words, a certain terminal contacts the bottom wall of the housing in the entire range from the position of the connecting portion to the tip position, and in a certain other terminal only in a part of the above range close to the connecting portion side. As a result, the position where the reaction force is received between the terminals is different in the contact pressure in the longitudinal direction of the support arm portion, resulting in variations in electrical connection characteristics. When the support arm portion is not sufficiently in contact with the bottom wall of the housing, there is also a problem that the contact pressure changes depending on the wobbling of the flat conductor in the vertical direction and the extending direction of the flat conductor. In order to make all the terminals come into contact with the bottom wall of the housing in the entire range, the gap in the free state must be made sufficiently small. If this is done, the amount of elastic displacement of the support arm portion becomes small, making it meaningless to provide a gap, and the reaction force, that is, the contact pressure becomes small, which is not preferable.

  In view of such circumstances, the present invention has a terminal in which all terminals receive reaction force from the bottom wall of the housing even if there are some dimensional variations, and the positions where the reaction force is received are the same. It is an object to provide an electrical connector for a flat conductor.

  An electrical connector for a flat conductor according to the present invention includes a plurality of terminals obtained by externalizing the metal plate while maintaining a flat plate surface of the metal plate, and the plurality of terminals perpendicular to the plate surface. A housing that holds at a predetermined interval in the direction, and a movable member that is movable with rotation between an open position that allows insertion of the flat conductor into the housing and a closed position that presses the flat conductor, The terminal is connected to the pressing arm portion by a connecting portion at a longitudinal intermediate position of the pressing arm portion with the flat conductor insertion / extraction direction as the longitudinal direction, and extends in the longitudinal direction to the bottom wall side of the housing. A pressing arm for pressing the flat conductor on one end of the flat conductor, and a closed position of the movable member on the other end. Pressure receiving force from the cam portion of the movable member when the movement of the movable member is completed The support arm portion is formed with a support portion supporting the flat conductor on one end side so as to protrude toward the pressing portion, and the pressing arm portion is a pressure receiving portion that receives a force from the cam portion. By receiving pressure, the pressure receiving portion causes an elastic displacement in the same plane as the plate surface of the terminal, thereby bringing a contact pressure between the support portion and the flat conductor.

  In such an electrical connector for a flat conductor, according to the present invention, the support arm portion of the terminal is a housing that is elastically displaceable in a range of one end side of the connecting portion in the longitudinal direction when the flat conductor is not inserted. A gap is formed between the bottom wall of the housing and at least one of the support arm and the bottom wall of the housing has a protrusion, and the movement of the movable member to the closed position is completed after the flat conductor is inserted. Sometimes, the protrusion elastically displaced in the above range is in contact with the other.

  According to the present invention having such a configuration, the gap between the bottom wall of the housing and the supporting arm portion of the terminal when the flat conductor is not inserted (when the movable member is in the open position) is appropriately set to a desired size. If it is set to, when the movable member comes to the closed position, the support arm part reliably contacts the bottom wall of the housing at the support arm part of all terminals or the protrusion provided on the housing, and receives a reaction force, The position where the reaction force is received is the same for all terminals. As a result, the connection state between the terminal and the flat conductor is stabilized without variation.

  In the present invention, it is preferable that the protrusion is provided at one end in the longitudinal direction of the support arm, and by doing so, a large amount of elastic displacement of the support arm is ensured, and accordingly The reaction force that the support arm receives from the bottom wall of the housing, that is, the contact pressure of the support on the flat conductor also increases.

  In the present invention, the protrusion may be provided on the support arm portion of the terminal, may be provided on the bottom wall of the housing, or may be provided on both of the terminals.

  In the present invention, the protrusion is preferably provided at a position corresponding to the support portion of the support arm portion in the longitudinal direction of the support arm portion. By doing so, the contact pressure between the flat conductor at the support portion and the reaction force from the bottom wall of the housing are in the same position in the longitudinal direction of the support arm portion, and the contact pressure and reaction force at the support arm portion are the same. Since no moment is generated by the force, the transmission of force becomes direct.

  As described above, according to the present invention, a flexible support arm and a housing in a range in which the flat arm is inserted with respect to the position of the connecting portion with respect to the terminal where the pressing arm and the supporting arm are connected by the connecting portion. Since a protrusion is provided on at least one of the bottom walls of the support arm and the support arm is elastically displaced, the protrusion abuts against the housing bottom wall so that the support arm receives a reaction force from the bottom wall. This reaction force is surely received at the same position, and the connection state between the terminals and the flat conductor is stabilized.

It is a perspective view which shows the external appearance of the front end part of the connector of one Embodiment of this invention and the flat type conductor connected to this. FIG. 2 is a cross-sectional view taken along a plane parallel to the plate surface of the terminal when the movable member of the connector of FIG. 1 is in the open position; Shown in position. FIG. 2 is a cross-sectional view of the movable member of the connector of FIG. 1 in a rotation process position on a plane parallel to the plate surface of the terminal, (A) is a first terminal position, (B) is a second terminal position, and (C). Indicates the bracket position. FIG. 2 is a cross-sectional view taken along a plane parallel to the plate surface of the terminal when the movable member of the connector of FIG. 1 is in the closed position; Shown in position. It is sectional drawing for showing the behavior of a projection about the 1st terminal of the connector of Drawing 1, (A) is in the state where the same movable member as Drawing 2 (A) is in an open position, (B) is a flat conductor. The state after insertion and the movable member has come to the closed position is shown. It is a schematic diagram which shows the behavior of the 2nd cam part of a movable member, (A) shows the virtual state which fixed the position of the rotation axis, (B) shows the actual state to which the position of the rotation axis moves. Show. Modified examples of the protrusion of the first terminal are shown in (A) to (D). FIG. 1 is a cross-sectional view of the connector shown in FIG. The positional relationship with the housing by the difference in the shape of the transition part of a movable member is shown, (A) shows this embodiment, (B) shows the prior art example for a comparison. The behavior of the upper and lower contact points of the second cam portion of the movable member is schematically shown. (A) is the same as FIG. 6 (B), and (B) to (D) show modified examples.

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

  FIG. 1 is a perspective view showing an appearance of a connector according to the present embodiment and a front end portion serving as a connecting portion of a flat conductor connected to the connector.

  In FIG. 1, reference numeral 1 denotes a flat conductor electrical connector according to the present embodiment, and F denotes a flat conductor connected to the connector 1.

  The flat conductor F has a connection portion with the connector 1 at its front end (upper right edge portion forming a portion closer to the connector 1 in the figure), and extends rearward (lower left in FIG. 1). In the figure, the portion up to the position immediately behind the connecting portion is shown, and the illustration behind it is omitted. In the present embodiment, the flat conductor F has a connection portion formed by removing the coating on the upper surface of the front end portion and exposing the connection circuit portion F1. This connecting portion is provided with a reinforcing sheet F2 on the lower surface in order to improve the strength when connected to the connector.

  In the connecting portion of the flat conductor F, a locked portion F3 is formed by notches on both side edges in the width direction. A claw-shaped locking portion formed on a metal fitting described later enters and locks into the notched locked portion F3, thereby contributing to prevention of the flat conductor F from coming off.

  The connection circuit portion F1 in the connection portion of the flat conductor F is provided with pads F4 formed on each of the plurality of wiring portions arranged in the width direction, and the pads F4 are alternately moved forward and backward. Pads F4A and rear row pads F4B are arranged in a staggered pattern. The front row pad F4A is connected to the second terminal 30 and the rear row pad F4B of the following two types of terminals (first terminal 20 and second terminal 30) of the connector 1 to be connected to the first terminal 20. It has become. Hereinafter, “first” is given to one part of the first terminal or other members positioned corresponding to the first terminal. The same applies to the second terminal, and “second” is attached.

  On the other hand, the connector 1 includes a connector body 2 and a movable member 3 that is movably supported by the connector body 2 (see also FIG. 2).

  The connector main body 2 has two types of terminals: a housing 10 made of an electrical insulating material, and a first terminal 20 and a second terminal 30 which are made by maintaining a flat surface of a metal plate and are held by the housing 10. And a metal fitting 40 made of a metal plate and held by the housing 10 in the same manner as these terminals. The first terminal 20, the second terminal 30, and the metal fitting 40 will be described in detail later.

  The housing 10 is formed by molding an electrically insulating material, has a substantially rectangular parallelepiped outer shape that is long in the width direction of the flat conductor F and relatively small in height, and penetrates in the front-rear direction. The slit-like first terminal grooves 11 and second terminal grooves 12 are alternately formed in the width direction. In the two types of the first terminal groove 11 and the second terminal groove 12, the first terminal 20 and the second terminal 30 are respectively inserted and held correspondingly to form the terminal arrangement range in the width direction. doing. Outside the arrangement range of the terminals, a metal groove 13 for holding the metal fitting 40 is formed in the same slit shape as the first and second terminal grooves 11 and 12 so as to penetrate in the front-rear direction.

  As described above, the first terminal 20, the second terminal 30, and the metal fitting 40 are made while maintaining the flat plate surface of the metal plate. The terminal groove 12 and the metal groove 13 are also formed so that the groove widths in the terminal arrangement direction are substantially equal to the plate thicknesses of the first terminal 20, the second terminal 30 and the metal part 40, respectively. In (C), the direction perpendicular to the paper surface is defined as the groove width.

  The first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 are formed between the upper wall 14 and the bottom wall 15 of the housing 10 as seen in FIGS. 2 (A), (B), and (C), respectively. In the front-rear direction (right and left in the figure), it penetrates. The first terminal groove 11, the second terminal groove 12, and the metal groove 13 are communicated with each other in a communication groove extending in a direction perpendicular to the paper surface of FIG. The communication groove forms a receiving opening 16 that opens rearward, and the connecting portion of the flat conductor F described above can be introduced into the receiving opening 16. Thus, the first terminal groove 11, the second terminal groove 12 and the metal fitting groove 13 are formed on the lower surface of the upper wall 14 and the upper surface of the bottom wall 15, respectively, with their rear regions separated vertically by the receiving opening 16. The first terminal upper groove 11A and the first terminal lower groove 11B, the second terminal upper groove 12A and the second terminal lower groove 12B, and the metal fitting upper groove 13A and the metal lower groove 13B are provided.

  The first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 communicate with each other at their front portions. That is, the front portions of the first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 are communicated with each other through an open space 17 formed above the bottom wall 15 of the housing 10. Therefore, the upper wall 14 is notched at the front portion, and the open space 17 enables the movable member 3 to be disposed and rotated. The upper wall 14 has a notch portion at the rear as shown in FIG. 2C at the positions of the metal fitting grooves 13 on both ends in the terminal arrangement direction. Sufficient elastic displacement above the corresponding portion is possible.

  In the second terminal groove 12 and the metal groove 13, the upper wall 14 and the bottom wall in the vertical direction are formed in a portion located between the open space 17 in the front part and the receiving opening 16 in the rear part in the front-rear direction. Position restricting portions 18B and 18C formed in an island shape with each other are provided to connect the opposing inner surfaces of each groove. The position restricting portions 18B and 18C provided in the second terminal groove 12 and the metal fitting groove 13 are in the same position in the front-rear direction, and the first terminal groove 11 is not provided with a position restricting portion.

  In the terminal arrangement direction, a first terminal 20, a second terminal 30, and a metal fitting 40, which will be described later, are fixed to portions of the bottom wall 15 corresponding to the first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13. A fixing portion is formed. The fixing portion 19A in the first terminal groove 11 is formed such that the thickness of the front end portion of the bottom wall 15 forms a taper portion, and the fixing portions 19B and 19C in the second terminal groove 12 and the metal fitting groove 13 are rear end portions of the bottom wall 15. Is formed so as to form a tapered portion.

  The first terminal 20, the second terminal 30 and the metal fitting 40 inserted and held in the first terminal groove 11, the second terminal groove 12 and the metal fitting groove 13, respectively, maintain a flat plate surface of the metal plate. In the first terminal 20 and the second terminal 30, respectively, an upper pressing arm portion 21; 31 and a lower supporting arm portion 22; 32, and both are connected by a connecting portion 23; 33 located in the middle portion in the front-rear direction. Further, the metal fitting 40 has an upper arm portion 41 positioned above and a lower arm portion 42 positioned below the upper arm portion 41, and both are connected by a connecting portion 43 positioned at an intermediate portion. The connecting portion 33 of the second terminal 30 and the connecting portion 43 of the metal fitting 40 are located behind the corresponding position restricting portions 18B and 18C.

  As shown in FIG. 2A, the first terminal 20 has a first pressing arm portion 21 positioned above extending to the vicinity of the rear end of the housing 10, but in the front to a position before the front end. It has only extended. The first pressing arm portion 21 has a first pressure receiving arm portion 24 in front of the first connecting portion 23 and a first flexible arm portion 25 in the rear. The first pressure receiving arm portion 24 is formed with a concave first pressure receiving portion 24A at the lower edge thereof, and a first pressing portion 25A protruding downward is provided at the rear end of the first flexible arm portion 25. Yes. The first pressure receiving portion 24A has a substantially semicircular concave shape, and also functions as a guide portion for rotating and guiding a cam of the movable member 3 described later. When the first pressure receiving portion 24A receives an upward force from the movable member 3 to be described later, the first pressing arm portion 21 has a lever principle and uses the position of the first connecting portion 23 as a fulcrum. The flexible arm portion 25 is inclined to bend downward.

  The first support arm portion 22 of the first terminal 20 has a rear portion extending in the front-rear direction to the same position as the flexible arm portion 25 of the upper arm portion 21, and a front portion of the first support arm portion 22 of the first pressing arm portion 21. The front end of the pressure receiving arm 24 extends forward from the housing. The first support arm portion 22 includes a first front fixed arm portion 26 and a first rear support arm portion 27 in front of and behind the position of the first connecting portion 23. The first front fixed arm portion 26 includes a raised portion 28 protruding upward in a mountain shape at an intermediate portion close to the connecting portion 23 in the front-rear direction, and a first connection portion 29 protruding outward from the housing toward the front. have.

  The first connection portion 29 is bent downward and extends so as to have a lower edge located slightly below the bottom surface of the bottom wall 15 of the housing 10, and the lower edge is in contact with the corresponding circuit surface with the circuit board. Facing the solder connection. The first connecting portion 29 is formed with a first fixing portion 29A having a cut groove shape on the rear edge side, and the first fixing portion 29A is a taper formed on the bottom wall 15 of the housing 10 described above. It is press-fitted into the fixed portion 19 </ b> A and plays a role in fixing the first terminal 20 to the housing 10.

  The first rear support arm portion 27 of the first support arm portion 22 of the first terminal 20 extends rearward from the position of the first connecting portion 23 and corresponds to the first pressing portion 25 </ b> A of the first pressing arm portion 21. It extends to. The first rear support arm 27 is inclined upward toward the rear to form a gap C that gradually expands with the bottom wall 15 of the housing. At the rear end of the first rear support arm portion 27, a first support portion 27 </ b> A that protrudes upward is provided facing the first press portion 25 </ b> A of the first press arm portion 21. Further, the first rear support arm portion 27 is formed with a protruding portion 27B protruding downward at a position corresponding to the first pressing portion 25A in the front-rear direction. The first pressing portion 25A and the first support portion 27A located opposite to each other sandwich the flat conductor F. When the connection circuit portion F1 is provided on the upper surface of the flat conductor F as shown in FIG. The first pressing part 25A is electrically connected to the connection circuit part F1, but when the connection circuit part is formed on the lower surface, the first support part 27A is electrically connected and the connection circuit part is provided on both sides. When formed, both are electrically connected to the connection circuit.

  The first terminal 20 thus formed is inserted into the first terminal groove 11 from the front to the rear. When inserted to a predetermined position, the first fixed portion 29A of the first front fixed arm portion 26 is fixed by being fitted into the fixing portion 19A of the bottom wall 15 of the housing 10, and the first terminal 20 is removed. Is prevented. Further, in the first terminal groove 11 in the first terminal groove 11, the first pressing arm portion 21 is the lower surface of the upper wall of the housing 10 and the first support arm portion 22 is the bottom wall in the front-rear direction. By being pressed by the upper surface of 15 and being sandwiched between the upper wall 14 and the bottom wall 15, the removal is prevented.

  As shown in FIG. 2B, the second terminal 30 has a second pressing arm portion 31 that is closer to the front end of the housing 10 and shorter than the first pressing arm portion 21 of the first terminal 20. It extends only to the middle position. The second pressing arm portion 31 has a second pressure receiving arm portion 34 in front of the second connecting portion 33 and a second flexible arm portion 35 in the rear. The second pressure receiving arm portion 34 is provided with a second pressure receiving portion 34 </ b> A that is slightly concave and bent at the lower edge thereof and that is horizontally long in the front and rear direction, and the second flexible arm portion 35 protrudes downward at the rear end. Two pressing portions 35A are provided. The second pressure receiving portion 34A has a linear shape extending in the front-rear direction at an intermediate portion in the front-rear direction, whereas the first pressure receiving portion 24A of the first terminal 20 is substantially semicircular. When the second pressure receiving portion 34A receives an upward force from a cam portion of the movable member 3 described later, the second pressing arm portion 31 uses the position of the second connecting portion 33 as a fulcrum according to the lever principle. The flexible arm portion 35 is bent downward and inclined.

  The second support arm portion 32 of the second terminal 30 has a front portion extending in the front-rear direction to a front position from the second pressure receiving arm portion 34 of the second pressing arm portion 31, and a rear portion of the second support arm portion 32. The second flexible support arm portion 37A and the second rear fixed support arm portion 37B are branched further rearward and extend rearward in parallel with each other, and the front portion extends further forward than the second connecting portion 33 and the second front portion. A fixed arm portion 36 is formed, and the rear end of the second rear fixed support arm portion 37B protrudes out of the housing. As described above, the second support arm portion 32 has the second front fixed arm portion 36 in front of the position of the second connecting portion 33, and the second front fixed arm portion 36 is moved back and forth. And the second rear fixed arm portion 37B. The second front fixed arm portion 36 has a linear cam support portion 38 formed on the upper edge of the front portion. The second flexible support arm portion 37A is provided with a second support portion 37A-1 that protrudes facing upward in the front-rear direction at the same position as the second pressing portion 35A.

  The second pressing portion 35A and the second support portion 37A-1 facing each other sandwich the flat conductor F in the same manner as in the case of the first terminal 20, and whichever is used for electrical connection with the flat conductor. Both may be used.

  The cam support portion 38 of the second front fixed arm portion 36 has an upper edge that is the same as or slightly below the lower edge of the island-shaped position restricting portion 18B of the housing 10 and is a straight line extending in the lateral direction. The cam contact part 38A which makes a shape edge is formed. The cam contact portion 38A is formed in a range extending in the front-rear direction and in the front-rear direction than the second pressure receiving portion 34A.

  The second front fixed arm portion 36 protrudes upward in the front-rear direction between the cam contact portion 38A and the second connecting portion 33 at a position corresponding to the position restricting portion 18B of the housing 10. A locking projection 36B is formed.

  In the second terminal 30, as described above, the second connection portion 39 is provided at the rear end portion on the opposite side to the first connection portion 29 of the first terminal 20 in the front-rear direction.

  The second connecting portion 39 provided so as to protrude out of the housing at the rear end of the second rear fixed support arm portion 37 </ b> B has a lower edge located slightly below the bottom surface of the bottom wall 15 of the housing 10, and is below. The lower edge is in contact with the corresponding circuit surface with the circuit board to enable solder connection. The second connecting portion 39 is formed with a cut groove-like second fixed portion 39A on the front edge side, and the second fixed portion 39A is connected to the tapered fixing portion 19B of the housing 10 described above. It is press-fitted and plays a role of fixing the second terminal 30 to the housing 10.

  The second terminal 30 formed in this way is inserted into the second terminal groove 12 from the rear to the front. When inserted to a predetermined position, the second front fixed arm portion 36 of the second support arm portion 32 penetrates between the bottom wall 15 of the housing 10 and the island-shaped position restricting portion 18B, and the second front fixed arm portion 36 is inserted. The locking protrusion 36B formed on the lower end of the position restricting portion 18B bites into the lower fixed portion 19B of the second rear fixed support arm portion 37B on the fixed portion 19B of the bottom wall 15 of the housing 10. The second terminal 30 is prevented from coming off by being fixed by being fitted.

  As shown in FIG. 2C, the metal fitting 40 is formed in a shape similar to that obtained by removing the second flexible support arm portion 37 </ b> A from the second terminal 30, but compared with the second terminal 30. In this case, the difference is that the upper arm portion 41 corresponding to the second pressing arm portion 31 of the second terminal 30 extends to the vicinity of the rear end of the housing, and the locking portion 45A at the rear end is the second pressing portion 35A of the second terminal 30. , But is larger and has a locking portion that protrudes greatly upward at the rear end of the lower arm portion 42 corresponding to the second rear fixed support arm portion 37 </ b> B of the second terminal 30. 49A. Others are the same as those of the second terminal 30, so “10” is added to the reference numeral of the second terminal 30 to make the reference numeral “40”, and the description thereof is omitted.

  The locking portion 45A and the locking portion 49A of the metal fitting 40 are formed in a large hook shape and protrude downward and upward, the front edge is substantially perpendicular to the front-rear direction, the rear edge is at the lower end, and Each has an oblique edge toward the top. Above the flexible arm portion 45 of the upper arm portion 41 where the locking portion 45A is formed, the upper wall 14 of the housing is greatly cut out and pressed by the tip of the flat conductor F to be inserted. Elastic stop is generated so that the stop portion 45A is further inclined upward, and further insertion of the flat conductor F to a predetermined position is enabled.

  As described above, the movable member 3 is movably supported in the connector main body 2 in which the first terminal 20, the second terminal 30, and the metal fitting 40 are held with respect to the housing 10. Has been.

  As shown in FIG. 1, the movable member 3 is made of an electrical insulating material similar to that of the housing 10 as a member extending over almost the entire width of the housing 10.

  The movable member 3 is supported so as to be rotatable between an open position seen in FIG. 2 and an intermediate position seen in FIG. 3 to a closed position seen in FIG. In FIG. 2, the rotation axis X of the movable member 3 is located in the lower half portion of the movable member 3, and the lower half portion is accommodated in an open space 17 formed in the front portion of the housing 10. In FIG. 2, an upper half portion outside the open space 17 and projecting upward from the upper wall 14 of the housing 10 is an operation portion 51 for a user to rotate the movable member 3. It has become.

  In the lower half of the movable member 3 in FIG. 2, the first terminal 20, the second terminal 30, and the metal fitting 40 are arranged in the width direction of the movable member 3 (in the terminal arrangement direction and perpendicular to the paper surface in FIG. 2). The first pressing arm portion 21 of each of the first terminal 20, the second terminal 30, and the metal fitting 40; the second pressing arm portion 31; the slit shape that allows the front portion of the upper arm portion 41 to enter. The first groove portion 52, the second groove portion 53, and the third groove portion 54 are formed penetrating in the front-rear direction. Accordingly, the groove widths of the first groove portion 52, the second groove portion 53, and the third groove portion 54 (the width between the groove inner surfaces in the direction perpendicular to the paper surface) are the first terminal 20, the second terminal 30, and the metal fitting 40. The dimensions are slightly larger than the respective plate thicknesses. The first groove portion 52, the second groove portion 53, and the third groove portion 54 are respectively provided with a first cam portion 55, a second cam portion 56, and a third cam portion 57 that connect the groove inner surfaces.

  The first cam portion 55 provided in the first groove portion 52 corresponding to the first terminal 20 in the terminal arrangement direction is a lower portion of the first groove portion 52 of the movable member 3 in the open position as seen in FIG. The 3/4 round portion around the rotation center is circular, and the remaining lower right 1/4 round portion has a square corner shape. The rotation center of the first cam portion 55 is located on an extension line of the rotation axis X of the movable member 3. The rotation center moves up and down by elastically displacing the first pressure receiving arm portion 24 of the first terminal 20 by the rotation of the movable member 3, but the left and right edges of the concave first pressure receiving portion 24 </ b> A on the left and right. It is regulated by and does not move. Since the elastic displacement of the first pressure receiving arm portion 24 is a direction perpendicular to the direction in which the first pressure receiving arm portion 24 extends, the first cam portion 55 has a first abutting point at which the top portion abuts the first pressure receiving portion 24A. Moves in the vertical direction, and a neutral line Z connecting the first contact point and the rotation axis X is perpendicular to the front-rear direction extending in the vertical direction. The first cam portion 55 is a sliding contact portion that rotates within the concave first pressure receiving portion 24 </ b> A (a lower portion positioned above the horizontal line passing through the rotation axis X and to the left of the neutral line Z). Has a circular portion, and its radius becomes the cam radius. Thus, when the movable member 3 rotates from the open position in FIG. 2 to the closed position in FIG. 4, the first cam portion 55 has the above-mentioned 3/4 circumferential portion forming a circular portion as the first pressure receiving portion. Since the cam radius at the sliding contact portion is constant only by sliding contact with the edge of the portion 24A, cam displacement does not occur only with the first cam portion 55.

  The first cam portion 55 is separated from the upper edge of the front portion of the first support arm portion 22 of the first terminal regardless of the rotation position of the movable member 3 between the open position and the closed position. Thus, it is positioned above the first support arm portion 22.

  The first cam portion 55 only needs to be guided and rotated by the concave first pressure receiving portion 24A as the movable member 3 rotates, and is slidably guided to the first pressure receiving portion 24A as shown. Even if the portion forms a circular portion, it may have a non-circular non-equal radius. At that time, even in the non-circular cam shape, the first cam portion 55 is restricted by both edges of the concave first pressure receiving portion 24A only by moving the rotation axis X up and down on the neutral line Z. Do not move to.

  On the other hand, the second cam portion 56 provided in the second groove portion 53 corresponding to the second terminal 30 in the terminal arrangement direction is above the horizontal line passing through the rotation axis X as seen in FIG. In addition, an upper cam surface 56A having an arc shape is formed on the left side of the neutral line Z, a substantially fan-shaped portion is formed on the right side of the upper cam surface 56A, and a lower cam surface 56B is formed on the fan-shaped portion. The rotation center is at the position of the rotation axis X that coincides with the rotation center of the first cam portion 55. The upper cam surface 56A forms a cam surface that protrudes radially outward from the arc-shaped portion of the first cam portion 55 indicated by a broken line. The fan-shaped portion forming the lower cam surface 56B is inclined in the lower right direction from the lower end position of the upper cam surface 56A and the upper extension portion extending rightward from the right end position of the upper cam surface 56A in FIG. A front lower cam surface 56B-1 extending straight downward from the front end of the upper extension and a rear lower cam surface 56B- extending straight rightward from the front end of the lower extension. 2 is connected by an arcuate intermediate lower cam surface 56B-3 to form a lower cam surface 56B. The distance between the rotation axis X and any position of the lower cam surface 56B is larger than the cam radius of the upper cam surface 56A. The cam radius, which is the distance connecting the rotation axis X to the front lower cam surface 56B-1, the rear lower cam surface 56B-2, and the intermediate lower cam surface 56B-3, is determined by the intermediate lower cam surface. 56B-3 is the largest, followed by the front lower cam surface 56B-1 and the rear lower cam surface 56B-2.

  In FIG. 2 (B) showing the state in which the movable member 3 is in the open position, the upper cam surface 56A of the second cam portion 56 is on the left side of the second pressure receiving portion 34A of the second terminal 30. The lower cam surface 56B is located above the second front fixed arm portion 36 where the lower cam surface 56B-2 forms the front portion of the second support arm portion 32 of the second terminal 30. It is in contact with a cam support 38 formed on the edge. Therefore, the second lower contact contact where the lower cam surface 56B comes into contact with the cam support portion 38 has the front lower cam surface 56B-1, as the movable member 3 rotates from the open position to the closed position. The intermediate lower cam surface 56B-3 and the rear lower cam surface 56B-2 are located within these areas in this order, and their positions move from the front to the rear.

  The third cam portion 57 provided in the third groove portion 54 corresponding to the metal fitting 40 in the terminal arrangement direction is substantially the same as the above-described second cam portion 56 located in the second groove portion 53 as seen in FIG. It is made in the same shape, has a fan-shaped portion extending to the right side, and the rotation center is the position of the rotation axis X that coincides with the rotation center of the first cam portion 55 and the second cam portion 56 It is in. The difference between the third cam portion 57 and the second cam portion 56 is that, among the lower cam surfaces of the third cam portion 57, the rear lower cam surface 56B-2 and the intermediate lower cam surface 56B- of the second cam portion 56. 2C and 3C, the portion corresponding to 3 is located away from the lower arm portion 42 of the metal fitting 40, and is not in contact with the lower arm portion 42. Therefore, the third cam portion 57 does not come into contact with the lower arm portion 42 when the movable member 3 is in the open position and the rotation process position, and when the movable member 3 reaches the closed position, FIG. ), The lower front cam surface 56B-1 of the third cam portion 57 comes into contact with the lower arm portion 42.

  The connector of this embodiment having such a configuration is used and functions in the following manner.

  First, the connector 1 is arranged at a predetermined position on a circuit board (not shown), and the solder fixing portion 49 of the metal fitting 40 is connected to the first connection portion 29 of the first terminal 20 and the second connection portion 39 of the second terminal 30. Soldered and fixed to the corresponding parts of the circuit board.

  With respect to the connector 1 thus attached to the circuit board, the movable member 3 is brought to an open position where it can be seen as seen in FIG. 2, and the receiving opening 16 of the housing 10 is opened rearward (leftward in the figure). In this state, the flat conductor F can be inserted.

  Next, with the movable member 3 in the open position as seen in FIG. 2, the connecting portion of the flat conductor F is inserted forward into the receiving opening 16. The first terminal 20 is between the first pressing portion 25A of the first flexible arm portion 25 and the first support portion 27A of the first rear support arm portion 27, and the second terminal 30 is the first of the second flexible arm portion 35. Since the gap between the two pressing portions 35A and the second support portion 37A-1 of the second flexible support arm portion 37A is slightly wider than the thickness of the connecting portion of the flat conductor F, the flat The connecting portion of the mold conductor F is easily inserted. However, with respect to the metal fitting 40, the gap between the engaging portion 45A of the upper arm portion 41 and the engaging portion 49A of the lower arm portion 42 is narrower than the thickness of the connecting portion of the flat conductor F. Accordingly, the flat conductor F is lifted by elastically displacing the locking portion 45A at its front end and advanced to a predetermined position while widening the interval, and then the flat conductor F has a notched engagement. The locking portion 45A enters the stop portion F3, whereby the flat conductor F is temporarily held.

  Even if the connecting portion of the flat conductor F is inserted as described above, since the movable member 3 is in the open position, the first rear support arm portion 27 that forms the second half portion of the first support arm portion 22 of the first terminal 20. The protrusion 27 </ b> B formed on the lower edge of the housing 10 is spaced from the bottom wall 15 of the housing 10 to form a gap C.

  Next, as seen in FIGS. 3 and 4, the movable member 3 is rotated to the closed position in FIG. 4 through the position in the rotation process of FIG. 3 and 4 should be illustrated with a flat conductor inserted, but the first terminal 20, the second terminal 30, and the metal fitting 40 have their maximum possible elastic displacement. In order to facilitate understanding, the displacement state when the flat conductor is absent is shown. Actually, since the flat conductor is inserted, the flat conductor is in the same state as in FIG. The elastic displacement amount is reduced by a thickness corresponding to the thickness, and a contact pressure corresponding to the difference from the maximum possible elastic displacement amount is generated. By the rotation of the movable member 3, the first cam portion 55, the second cam portion 56 and the third cam portion 57 of the movable member 3 rotate about the rotation center X. In the rotation process shown in FIG. 4, the first cam portion 55 and the third cam portion 57 are separated from the first front fixed arm portion 26 of the first terminal 20 and the front upper edge of the lower arm portion 42, respectively. However, as shown in FIG. 3B, the lower cam surface 56B of the second cam portion 56 is located at the position of the second lower contact point that contacts the cam support portion 38 of the second terminal 30 as shown in FIG. The rear lower cam surface 56B-2 is shifted to the intermediate lower cam surface 56B-3 of the lower cam surface 56B. Since the cam radius is the maximum at the intermediate lower cam surface 56B-3, the second lower contact point moves from the rear lower cam surface 56B-2 to the intermediate lower cam surface 56B-3, and the second cam 56 The upper cam surface 56A elastically displaces the second pressure receiving arm portion 34 of the second terminal 30 at the second upper contact point and lifts it upward. The position of the second lower contact point moves the upper edge of the cam support portion 38 from the front to the rear. However, the upper edge extends horizontally in a straight line, so there is no change in the height direction. Accordingly, since the cam radius at the second lower contact point becomes maximum at the intermediate lower cam surface 56B-3, the position of the cam rotation axis X moves upward by the increment of the cam radius. Since the rotation center is at the same position on the rotation axis X for the first cam portion 55 and the third cam portion 57, the rotation center of the first cam portion 55 and the third cam portion 57 is rotated. The first pressure receiving arm portion 24 where the first pressure receiving portion 24A of the first terminal 20 is formed and the front portion of the upper arm portion 41 of the metal fitting 40 are lifted by the upper surfaces of the cams. As described above, when the movable member 3 rotates toward the closed position, the first cam portion 55, the second cam portion 56, and the third cam portion 57 that are integrated as a part of the movable member 3 rotate. The first terminal 20 is raised by the first pressure receiving arm portion 24, the second terminal 30 is raised by the second pressure receiving arm portion 34, and the metal fitting 40 is raised by the front portion of the upper arm portion 41. The flexible arm portion 25, the second flexible arm portion 35 of the second terminal 30, and the rear portion of the upper arm portion 41 of the metal fitting 40 are elastically displaced downward to maintain the position. Therefore, the first terminal 20 presses the flat conductor F downward by the first pressing portion 25A of the first flexible arm portion 25, and the second terminal 30 presses the flat conductor F by the second pressing portion 35A of the second flexible arm portion 35, respectively. The flat conductor F is bent downward from the first support portion 27A formed on the first rear support arm portion 27 of the first terminal 20 and the second flexible support arm portion 37A of the second terminal 30 from below. It is supported by receiving a reaction force from the second support portion 37A-1 formed in the above. The first rear support arm portion 27 of the first terminal 20 is elastically deflected and displaced downward, but a downwardly projecting portion 27B is formed on the lower edge of the rear end of the first rear support arm portion 27. When the movable member 3 is rotated to the closed position, the protrusion 27B is in contact with the upper surface of the bottom wall 15 of the housing 10 and prevents the first rear support arm 27 from being further elastically displaced. In addition, the maximum displacement is made constant, and the reaction force from the bottom wall 15 is received, so that the clamping pressure on the flat conductor F between the first support portion 27A and the first pressing portion 25A is ensured and strong. Shall.

  Further, the metal fitting 40 has a notch-like locked portion F3 of the flat conductor F that is moved downward by being pushed downward by the first pressing portion 25A of the first terminal 20 and the second pressing portion 35A of the second terminal 30. The locking portion 49A of the lower arm portion 42 is also locked, and the flat conductor F is prevented from coming off by the locking portions 45A and 49A that are positioned close to each other so as to face each other vertically.

  Thus, in this embodiment, the flat conductor F is connected to the connector 1, but the protrusion 27B and the movable member 3 formed on the first rear support arm 27 of the first terminal 20 in the connector 1 of this embodiment. The first cam portion 55 and the second cam portion 56 will be further described in detail.

<Projection of first terminal>
In the flat conductor electrical connector of the form of the present embodiment, the flat surface of the metal plate is made as it is, and therefore, by setting the plate thickness direction as the terminal arrangement direction, a large number of extremely high density can be obtained. Terminals are arranged. In addition, since the distance between the terminals is small due to the high-density arrangement, two types of terminals are arranged alternately to move the connection part back and forth in order to make the solder connection at the connection part to the circuit board as easy as possible. The terminals are arranged at different positions outside the housing in order to increase the distance in the terminal arrangement direction between the connecting portions. As described above, when a large number of different types of terminals are arranged in a wide range in the width direction of the flat conductor, the rigidity of the housing and the deflection of the flat conductor are often not uniform in the width direction. In addition, if the dimensional variation due to dimensional error during manufacturing and the assembly position error during assembly to the housing overlap with each other, the pressing part of the single movable member is made linearly with high accuracy in the width direction. However, it is not easy to make the contact pressure between the terminal and the flat conductor the same for any terminal. The effect of this variation is that when the rotating member is rotated to the closed position, a large amount of displacement of the supporting arm portion that is flexibly displaced while supporting the flat conductor from below to obtain contact pressure is ensured. If the actual displacement amount falls within the possible displacement amount, it can be mitigated. In Patent Document 1, for this purpose, a gap is provided between the support arm portion and the bottom wall of the housing, and the size of the gap is set so as to gradually increase from the connecting portion position to the rear end in the free state of the support arm portion. doing. However, setting the possible displacement amount to a large value results in an increase in the height of the connector, which is contrary to the desire to make it as small as possible. Also, even if the possible displacement amount is increased, the terminals are not freely displaced independently of each other, and the support arm portion of each terminal is flexibly displaced by being pressed through one flat conductor. Therefore, in the state where the sum of the applied pressure by the movable member and the reaction force from the support arm portions of all terminals is balanced, the contact pressure with the flat conductor and the amount of displacement remain between the terminals. .

  In the present embodiment, the actual displacement amount in the support arm portion and the contact pressure against the flat conductor when the movable member reaches the closed position without excessively increasing the possible displacement amount of the support arm portion between the terminals. To be uniform.

  In the present embodiment, a protrusion 27 </ b> B is provided on the lower edge of the rear end of the first rear support arm portion 27 of the first terminal 20. Therefore, when the rotating member reaches the closed position shown in FIG. 5B from the open position shown in FIG. 5A, the first rear support arm portion 27 is deflected and the protrusion 27B becomes the housing 10. Further contact with the upper surface of the bottom wall 15 of the first rear support arm portion 27 prevents further displacement. Therefore, with respect to the first terminal 20, the displacement amount of the first rear support portion 27 is the same for all terminals. Further, since the protrusion 27B receives a reaction force from the bottom wall 15 of the housing 10 under the displacement, the contact pressure is the same for all terminals. Thus, variations in displacement and contact pressure can be eliminated without excessively increasing the possible displacement of the support arm. Since the bottom wall 15 has high rigidity, a large reaction force, that is, contact pressure can be secured. Further, the wobbling in the vertical direction of the flat conductor and the change in the contact pressure in the turning direction are prevented.

<First cam portion and second cam portion of movable member>
In the present embodiment, in order to press the first and second terminals against the flat conductor with the first and second pressing portions, the movable member 3 includes the first and second pressure receiving pressures of the first and second terminals. It has a first cam portion 55 and a second cam portion 56 that act so as to raise the respective portions.

  Since the first cam portion 55 is a circular portion having a constant cam radius regardless of the cam rotation angle in the range of sliding contact rotation with respect to the first pressure receiving portion 24A of the first terminal 20, No cam displacement occurs due to the rotation of one cam portion 55 itself. The first cam portion 55 having the rotation axis X in common by the upward movement of the position of the rotation axis X of the movable member 3 by the second cam portion 56 to be described later only moves up and produces the same amount of displacement. is there. Therefore, in this embodiment, if the behavior of the second cam portion 56 is described, the displacement of the first pressure receiving portion 24A of the first terminal 20 and the second pressure receiving portion 34A of the second terminal 30 can be understood.

  The second cam portion 56 is as described above with reference to FIG. 2B with respect to its shape, and the cam radius relationship between the upper cam surface 56A and the lower cam surface 56B. The rotation axis X of the second cam portion 56 also moves up and down during the rotation process. However, for the sake of easy understanding, the position of the rotation axis X is not fixed and is at a fixed point in FIG. After the state of the cam surface is shown, in FIG. 6B, a state in which the vertical movement of the rotation axis X is also superimposed will be described. 6A and 6B, the position of the second cam portion 56 immediately after the movable member 3 starts to rotate from the open position is the position <1>, and the rotation proceeds and the second cam portion. 56, that is, when the second lower contact point is located on the cam neutral line Z, position <2>, and the position when rotated to the closed position is position <3>. Part 56 is shown. Further, the second upper contact point of the second cam portion 56 at the positions <1>, <2>, and <3> is denoted by P to be P1, P2, and P3, respectively, and the second lower contact point Q is set to Q1, respectively. It is shown as Q2 and Q3.

  In FIG. 6A in which the position of the rotation axis X is fixed, the movable member 3 starts to rotate from the open position and passes through positions <1> and <2> to the closed position <3>. Around the rotation axis X, the second upper contact point P of the second cam portion 56 moves as P1, P2, and P3, and the second lower contact point Q moves as Q1, Q2, and Q3. Regarding the second upper contact point P, the upper contact point P is at the highest position in the height direction when positioned at P2, and the second lower contact point Q is at the lowest position when positioned at Q2 with respect to the second lower contact point Q. It is in. That is, the distance between the second upper contact point P and the second lower contact point Q in the height direction is such that the second upper contact point P is P2 and the second lower contact point Q is Q2. Is at the neutral line Z, which is the maximum value. Therefore, at this time, the deflection displacement amount of the second pressure receiving arm portion 34 in the second pressure receiving portion 34A of the second terminal 30 is maximized.

  Next, the positions Q1, Q2, and Q3 of the second lower contact point Q based on the movement of the second cam portion 56 shown in FIG. 6A described above do not move in the height direction. FIG. 6B shows a state where the second terminal 30 extends in the horizontal direction as the upper edge of the second front fixed arm portion 36 and moves in the horizontal direction on the upper edge of the cam support portion 36A. As described above, since the positions Q1, Q2, and Q3 of the second lower contact point Q do not move in the height direction, the movement in the height direction of these positions seen in FIG. In B), the movement of the position of the rotation axis X appears. That is, the rotation axis X moves in the height direction in the order of X1, X2, and X3 in FIG.

  As shown in FIG. 6B, the second upper contact point P that rotates and moves around the rotation axis X that sequentially moves the positions X1, X2, and X3 moves P1 while moving greatly in the height direction. , P2, and P3 are changed. The amount of movement in the height direction of the second upper contact point P is the amount of movement in the height direction of the second lower contact point Q in FIG. 6A (that is, the amount of movement in the height direction of the rotation axis X). The sum is obtained by superimposing the amount of movement in the height direction of the contact P, and corresponds to the amount of elastic displacement of the second pressure receiving portion 34A. Since the second upper contact point P and the second lower contact point Q simultaneously move laterally beyond the neutral line Z while the second upper contact point P is accompanied by a large amount of movement in the height direction, The operator gets a large click feeling before and after the line Z.

  Next, a modification of the protrusion 27 </ b> B located at the rear end of the first rear support arm portion 27 of the first terminal 20 will be described in the present embodiment. The protrusion 27B does not have a substantially quadrangular shape as seen in FIG. 2A, but may have a low triangular shape with a tapered surface as shown in FIG. 7A, as shown in FIG. 7B. Even if it is located slightly in front of the end, as shown in FIG. 7C, it may be provided not on the first rear support arm 27 but on the bottom wall 15 of the housing 10, and FIG. ) And may be provided so as to face both the first rear support arm 27 and the bottom wall 15 of the housing 10.

  Next, in the present embodiment, in the first terminal 20, the first front fixed arm portion 26 that forms the front portion of the first support arm portion 22 is connected to the first connection portion 29 at the front end and the first terminal portion as described above. Between the connection parts 23, it has the protruding part 28 which protrudes large upward in the shape of a mountain. As seen in FIGS. 8A and 8B, in the peripheral area S (S1 + S2) where the raised portion 28 is located, there is also a relationship where the connecting portion 23 is located, and the terminal is held in this peripheral area. For the purpose, the groove width of the terminal groove of the housing is relatively narrow (see FIG. 8B showing only the housing). Therefore, when the first connection portion 29 of the first terminal 20 is solder-connected to the circuit board, the flux tends to move up the surface of the first connection portion 29 toward the connection portion 23. When the raised portion 28 is not provided, the flux reaches the connecting portion 23 in the narrow gap between the terminal surface and the terminal groove under the capillary phenomenon, and the flux further moves depending on the amount of the moving flux. May progress. Therefore, in the present embodiment, by securing a large ridge 28, even if the amount of flux that moves is somewhat large, it is diffused on the surface of the ridge 28 and the flux accumulates here. The flux that moves to is gone. Thus, the flux does not move and adhere to the rear end position of the terminal by making electrical contact with the flat conductor.

  Next, the movable member 3 on which the cam portion is formed will be further described. In the present embodiment, the transition area 58 between the rear surface and the lower surface of the movable member 3 shown in FIG. 9A has a curved outer wall that forms an arc centered on the rotation axis X. Therefore, the distance between the front surface of the island-shaped position restricting portions 18B and 18C and the transition area 58 that are closest to the movable member 3 in the front-rear direction is such that the movable member 3 is between the open position and the closed position. It is constant regardless of the position.

  When the movable member 3 is rotated, it may receive a backward force. When the force is large, the transition area 58 is displaced backward during the rotation. If the transition area 58 is a straight line and the distance from the rotation axis is not constant as shown in FIG. 9B, the distance is the largest part during the rotation, and it can be moved by an amount corresponding to this distance. The member may move backward, which may cause excessive pressure on the terminal and damage. In the present embodiment, since the transition area 58 is arcuate, the distance between the transition area and the position restricting portions 18B and 18C is constant during rotation, and even if the movable member may contact the terminal, Damage to the terminal is prevented without excessively pressing the terminal.

  Next, the cam shape of the second cam portion 56 of the movable member 3 is such that the second upper contact point P and the second contact point Q accompanying the rotation of the movable member 3 are in the positional relationship as shown in FIG. It can be designed to have various positional relationships as well as the case of rotating. In the example shown in FIG. 6, P2 where the second upper contact point P is at the highest position and Q2 where the second lower contact point P is at the lowest position are simultaneously positioned on the neutral line Z so as to obtain the maximum cam displacement. However, in this embodiment, not only can the cam displacement amount be obtained at both the second upper contact point P and the second lower contact point Q, but the cam displacement amount at the second lower contact point Q can be increased. Therefore, it is not always necessary that the uppermost position P2 of the second upper contact point P and the lowermost position Q2 of the second lower contact point are simultaneously on the neutral line Z, and the neutral line Z is reached. Is not necessarily required.

  Each example of FIG. 10 (B)-(D) is shown. FIG. 10A shows the positional relationship of FIG. 6 described above for comparison with these. As shown in FIG. 10A, this positional relationship is the second upper contact point at the time when the maximum cam displacement is obtained on the neutral line Z that forms a line perpendicular to the cam support portion 36A of the second terminal 30. Although P2 and the second lower contact point Q2 are located at the same time, in FIGS. 10B to 10D, both are not located at the neutral line Z at the same time, or one of them reaches the neutral line Z. Absent.

  In FIG. 10 (B), when the movable member 3 comes to the closed position, the second lower contact point Q3 is located far beyond the neutral line Z as compared to the case of FIG. 10 (A). The second upper contact point P3 is located on the neutral line Z. Therefore, the click feeling is obtained at the lower cam surface 56B after being obtained at the upper cam surface 56A, but the click feeling at the lower cam surface 56B is large.

  Next, in FIG. 10C, when the movable member 3 comes to the closed position, the second lower contact point Q3 reaches the position on the neutral line Z, and at that time, the second upper contact point P3 is the neutral line. It is in the position that passed Z.

  FIG. 10D shows two cases. As one case, for the purpose of comparison, the example of FIG. 10B is shown as second upper contact points P1, P2, P3 and second lower contact point Q1. , Q2, Q3, and the other case is shown as second upper contact points P1 ′, P2 ′, P3 ′ and second lower contact points Q1 ′, Q2 ′, Q3 ′.

  In FIG. 10D, the second lower contact points Q1 ′, Q2 ′, Q3 ′ are at the same positions as the second lower contact points Q1, Q2, Q3 shown in FIG. The upper contact points P1 ′, P2 ′, and P3 ′ are located slightly in front of the second upper contact points P1, P2, and P3 in the rotation direction toward the closed position. Therefore, the second upper contact point P3 'is not located on the neutral line Z.

DESCRIPTION OF SYMBOLS 1 Connector 22; 32 Support arm part 3 Movable member 23; 33 Connection part 10 Housing 24A; 34A Pressure receiving part 14 Upper wall 25A; 35A Press part 15 Bottom wall 27B Protrusion part 20; 30 Terminal C Clearance 21; 31 Press arm part

Claims (4)

A plurality of terminals obtained by externalizing the metal plate while maintaining a flat plate surface of the metal plate, a housing for holding the plurality of terminals at a predetermined interval in a direction perpendicular to the plate surface, and a flat type A movable member movable with rotation between an open position that allows insertion of the conductor into the housing and a closed position that presses the flat conductor, and the terminal has a flat conductor insertion / extraction direction as a longitudinal direction. A pressing arm portion that extends, and a supporting arm portion that is connected to the pressing arm portion by a connecting portion at a longitudinal intermediate position of the pressing arm portion and extends in the longitudinal direction and is positioned on the bottom wall side of the housing. The arm has a projection-like pressing portion for pressing the flat conductor on one end side which is the insertion side of the flat conductor, and a cam of the movable member when the movement of the movable member to the closed position is completed on the other end side. A pressure receiving portion that receives pressure from the portion, and the support arm portion is A projecting support portion that supports the flat conductor is formed on the end side so as to protrude toward the pressing portion, and the pressing arm portion receives pressure from the cam portion by the pressure receiving portion, whereby the pressure receiving portion is In the electrical connector for a flat conductor that causes elastic displacement in the same plane as the plate surface of the terminal and brings a contact pressure between the support portion and the flat conductor,
The support arm portion of the terminal forms a gap with the bottom wall of the housing so as to be elastically displaceable in a range on one end side of the connecting portion in the longitudinal direction with the flat conductor not inserted. In addition, at least one of the support arm and the bottom wall of the housing has a protrusion, and when the movement of the movable member to the closed position is completed after the insertion of the flat conductor, the protrusion that is elastically displaced in the above range is the other. An electrical connector for a flat conductor, wherein the electrical connector is in contact with a flat conductor.   The flat conductor electric connector according to claim 1, wherein the protrusion is provided at one end of the support arm in the longitudinal direction.   The flat conductor electric connector according to claim 1, wherein the protrusion is provided on a support arm portion of the terminal.   4. The electric conductor for a flat conductor according to claim 1, wherein the protrusion is provided at a position corresponding to the support portion of the support arm portion in the longitudinal direction of the support arm portion. connector.

Images