JP4878615B2 - Flat conductor electrical connector - Google Patents

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 are known. 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, there is a connector disclosed in Patent Document 1.

  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 hook-like arm portion and a fixed arm portion that are substantially parallel to each other, and both are connected by a connecting portion. Each terminal is inserted and accommodated in a terminal groove formed so as to penetrate left and right on the inner surfaces of the upper and lower walls of the housing. A hook-shaped arm portion is accommodated in the terminal groove on the upper wall side, and a fixed arm portion is accommodated in the terminal groove on the lower wall side. A fixing recess is formed at the right end portion of the fixed arm portion and is fitted and fixed to the right end edge of the lower wall of the housing.

  The hook-shaped arm portion has a protruding pressing portion at the left end, and the fixed arm portion has a protruding contact portion at the left end. The pressing portion and the contact portion are opposed to each other, and a flat conductor is inserted between them. On the other hand, in the region to the right of the connecting portion, a pressure receiving portion is formed in the bowl-shaped arm portion, and a curved concave portion is formed in the fixed arm portion, and the cam portion of the movable member is provided between the pressure receiving portion and the curved concave portion. positioned.

  The movable member is rotated between an open position and a closed position. When in the open position, the flat conductor is inserted between the pressing portion of the bowl-shaped arm portion and the contact portion of the fixed arm portion, and in the closed position, the cam portion of the movable member fixes the pressure receiving portion to the fixed arm portion. Displace in the direction away from. When the pressure receiving portion is displaced in this direction, the hook-shaped arm portion tilts like a ridge with the position of the connecting portion as a fulcrum, and as a result, the pressing portion presses the flat conductor against the contact portion, and the flat type is brought into contact with the contact pressure. The conductor and the contact portion are electrically connected.

  The fixed arm portion having a contact portion is supported in contact with the bottom of the terminal groove from the beginning over almost the entire length, and contacts the flat conductor at a predetermined position with a predetermined contact pressure without being displaced.

The connector disclosed in Patent Document 1 is called a back flip type because the movable member is located on the rear side opposite to the contact portion in the longitudinal direction of the fixed arm portion and the hook-shaped arm portion. The On the other hand, there is a so-called front flip type in which the movable member is located in front of the contact portion. In this front flip type, the movable member itself presses the flat conductor against the contact portion in the closed position. Therefore, when the flat conductor is squeezed particularly in the vertical direction in a state where the movable member is in the closed position, there is a problem that the movable member is easily pushed out toward the open position. In this respect, in the back flip type, even if the hook-shaped arm portion is pushed upward by a flat conductor, the pressure-receiving portion of the hook-shaped arm portion acts in a direction to sandwich the cam portion by the lever principle. Hold the flat conductor firmly. Also, in the case of the front flip type, compared to the state in which the movable member presses the flat conductor, the back flip type presses the flat conductor so that the pressing portion of the terminal has a small area and bites into the flat conductor. Therefore, in this respect, it can be said that the flat conductor is less likely to come out than the front flip type. Thus, the back flip type is not only that the position of the movable member is different from the front flip type, but also has a significant functional difference, and is distinguished from the front flip type.
JP2007-48499A

  Such a flat conductor electrical connector has a large number of terminals. Therefore, due to the shape / dimension error of the terminal and the assembly error, the position of the contact portion in the contact pressure direction with the flat conductor often varies among a large number of terminals. In the electrical connector for back flip type flat conductor disclosed in Patent Document 1, since the fixed arm portion having the contact portion is always in a fixed position when contacting the flat conductor, the contact portion of each terminal is In the contact pressure direction, the flat conductor is contacted at a position with variation. This means that the contact pressure at the terminal, that is, the contact state is not uniform, resulting in a contact unstable terminal. In the worst case, a terminal that does not come out comes out.

  Next, the movable member is locked in the closed position in order to maintain the position where the flat conductor is pressed. However, as described above, when the movable member reaches the closed position and presses the flat conductor against the contact portion of the fixed arm portion with a predetermined pressure, the contact portion of the fixed arm portion is always in a fixed position and is not displaced. The force for operating the member toward the closed position increases rapidly when locked, making operation difficult.

  In an electrical connector for a flat conductor, when used, the connected flat conductor may be subjected to an external force in the thickness direction, that is, in the direction of increasing or decreasing the contact pressure. When the external force is in the direction in which the contact pressure is reduced, if the flat conductor receives a force in the extraction direction at the same time, the flat conductor may accidentally come out, or the connection position in the same direction may shift. Sometimes it ends up.

  In view of such circumstances, the present invention absorbs the influence of the variation during the pressing of the flat conductor even if the position of the contact portion of each terminal varies when the connector is completed, and any terminal is necessary. Back-flip type that allows contact pressure to be obtained, prevents the locking force from rising sharply, and further prevents inadvertent disconnection as much as possible even when the flat conductor is subjected to external force when the connector is in use. An object of the present invention is 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. With a rotation between a housing in which terminal grooves are received with a predetermined interval with the direction as an arrangement direction, an open position that enables insertion of the flat conductor into the housing, and a closed position that presses the flat conductor A movable member, and the terminal has two types of first terminal and second terminal mixedly arranged in the arrangement direction, and the first and second terminals extend with the flat conductor insertion / extraction direction as the longitudinal direction. Each of the first and second pressing arm portions in the form of a hook is connected to the first and second pressing arm portions by first and second connecting portions at a longitudinal intermediate position of the first and second pressing arm portions. Each having first and second support arms extending in the same direction. The first and second pressing arm portions have respective first and second pressing portions for pressing the flat conductor on one end side, and the movable member is moved to the closed position of the movable member on the other end side. A first pressure receiving portion and a second pressure receiving portion for receiving a force from the first and second pressure portions, respectively, and the first and second support arm portions each support a flat conductor on the one end side. The first and second pressing arm portions receive the first and second pressure receiving portions at the first and second pressure receiving portions, respectively, by receiving the force from the first and second pressing portions, respectively. The second pressure receiving portion generates an elastic displacement in the same plane as the plate surface of the terminal, and brings a contact pressure between the first and second support portions and the flat conductor.

In such an electrical connector for a flat conductor, in the present invention, the first and second pressure portions of the movable member are arranged such that when the movable member is in the open position, the flat conductor is connected to the first pressing portion and the first pressing portion on the one end side. It can be inserted between the support part and between the second pressing part and the second support part, and has a shape to pressurize the first and second pressure receiving parts in the closed position, respectively. The first and second support arm portions of the first and second terminals respectively have first and second held portions that are fixedly held in the first and second terminal grooves of the housing, respectively. The first terminal is inserted into the first terminal groove from the other end side of the housing, and is provided on the first support arm portion at a position adjacent to the first connection portion at one end side of the first connection portion. A housing with a held part and a first fixed part provided on the first support part on the other end side And the first support arm portion of the first terminal has an edge portion opposite to the first support portion until the movable member reaches the closed position from the open position. It is elastically deformable in the range from the one holding part to the first support part, and a gap that gradually widens toward the first support part is formed between the bottom of the first terminal groove of the housing. When the movable member reaches the closed position, the first support portion is pressed against the flat conductor, and the first support arm portion is elastically deformed so that the gap disappears and contacts the groove bottom of the first terminal groove. The second terminal is inserted into the second terminal groove from one end side of the housing, and the second support arm portion is located at a position adjacent to the second connection portion on the other end side than the second connection portion. The second held portion provided in the housing and the second fixed portion provided in the second support portion on one end side to the housing The first pressing portion of the first terminal is more rigid than the second pressing arm portion of the second terminal, and in the longitudinal direction, the first contact portion is more than the second contact portion. Is also located on one end side of the housing.

  In the present invention having such a configuration, when the movable member is in the open position, the flat conductor is inserted into the connector, and the movable member is moved to the closed position, whereby the flat conductor is connected to the terminal by the movable member. Is pressed to connect the flat conductor and the terminal.

  In the present invention, since the terminal has two types of the first terminal and the second terminal that are mixed and distributed in the arrangement direction, the connection state of various terminals will be described.

  Regarding the first terminal, when the movable member is in the open position, the first terminal is formed between the first pressing portion formed on the first pressing arm portion of the first terminal and the first supporting portion formed on the first support arm portion. After the flat conductor is inserted, the movable member is operated to push the flat conductor against the first support portion during the transition toward the closed position, and the first support arm portion is pushed from the flat conductor to the second position. When the movable member reaches a predetermined closed position when the movable member reaches a predetermined closed position by causing an elastic deflection with the holding portion as a fulcrum to approach the groove bottom of the first terminal groove, the first support arm portion is In contact with the groove bottom of the first terminal groove in a range from the first held portion to the first support portion.

  Even if there is a variation in the position of the first support portion of the first terminal when the flat conductor is not inserted, when the movable member moves toward the closed position, the flat conductor is continuously moved to a plurality of second conductors during the transition. One terminal comes into contact with the first support portion of each terminal, and the contact pressure gradually increases as the amount of elastic deformation of the first support arm portion increases. Therefore, even if there is a variation in the position of the first support portion for each terminal at the beginning, the influence of the variation during the elastic deformation of the first support arm portion is absorbed, and all the first terminals are connected to the flat conductor. It comes in contact and ensures the necessary contact pressure. Since the contact pressure gradually increases, the reaction force to the movable member gradually increases to reach the locking force. Therefore, the locking force of the movable member does not increase rapidly.

  For the first terminal as described above, the second support arm portion of the second terminal is fixed by the housing at the second held portion close to the second connecting portion and the second fixed portion on the second support portion side. In the range between the second held portion where the second support portion is provided and the second fixed portion, the pressing force is applied via the flat conductor when the movable member moves to the closed position. Even if it receives, the said 2nd support arm part will only support the said pressing force in a fixed position, without elastically deforming. At that time, since the first pressing arm portion of the first terminal has a longer arm length than the second pressing arm portion, the first and second pressing arms are inclined even if they are inclined and displaced in the pressing direction of the flat conductor. The pressing force at the two pressing parts is balanced.

  Thus, since the second support arm portion facing the second pressing arm portion is not elastically deformed, the first support arm portion is elastically deformed even when an external force in a direction in which the flat conductor presses the first support portion is received. Then, the supporting force is not reduced, and the second pressing portion of the second pressing arm portion holds the flat conductor so as to bite into the flat conductor, and brings a large resistance force in the pulling direction of the flat conductor. As a result, even if an external force that inadvertently acts on the flat conductor is accompanied by a component in the direction of extracting the flat conductor, this disconnection is prevented.

  Thus, in the present invention, even if there is a variation in the initial position (position when the movable member is in the open position) of the first support portion, which becomes the contact point by the first terminal, the subsequent movement is possible due to its elasticity. The movement of the member to the closed position eliminates the influence of the variation, and the flat conductor is reliably prevented from being detached depending on the second terminal. Furthermore, since the first and second support portions of the first and second terminals are shifted in the longitudinal direction of the terminals, the flat conductor has a wider support range, that is, a contact range when viewed as all terminals. The contact state is stable.

  In the present invention, the second terminal has a second fixed portion provided on one end side, so that the distance from the second held portion to the second support portion is the first terminal to the first terminal in the first terminal. Shorter than the distance to the support. Therefore, if it is going to give elasticity equivalent to a 1st support arm part also to a 2nd support arm part, the 2nd support arm part must be made longer than a 1st support arm part. This leads to an increase in the size of the connector. In the present invention, since the second support arm portion is fixed without giving elasticity, the above-described flat conductor is uniformly pressed and the flat conductor is prevented from coming off without causing such an increase in size. It was.

  In the present invention, in order to make the contact points within the contact range uniform, the first terminals and the second terminals are preferably arranged alternately.

    In the present invention, it is desirable that the first support arm portion of the first terminal has a gap with the groove bottom of the first terminal groove that is linearly widened toward the first support portion. Since the elastic deformation of the cantilever-shaped first support arm portion with the first supported portion of the first support arm portion as a fulcrum becomes larger toward the first support portion (front end portion), the above clearance is also included in this. Together, it should be wider towards the first support. By doing so, the first support arm portion is gradually in contact with the groove bottom of the first terminal groove from the first held portion side in the range from the first held portion to the first supported portion. At the same time, it abuts against the groove bottom.

  In the present invention, the housing has the first and second held portions at positions corresponding to the first and second held portions in the longitudinal direction of the first and second support arm portions of the first and second terminals. Each of the first and second terminal grooves may have first and second holding wall portions sandwiched between the bottoms of the first and second terminal grooves.

  The first and second holding walls can strongly hold the first held portion of the first terminal and the second held portion of the second terminal.

  In the present invention, the first and second support portions of the first and second terminals may be the first and second contact portions that make electrical connection with the flat conductor, respectively. In addition, the first pressing part and the second pressing part can also be used as the first contact part and the second contact part, or only the first pressing part and the second pressing part can be the first contact part and the second contact part. It can also be used as a part.

  In the present invention, when the first pressing portion and the second pressing portion do not function as contact portions, it is preferable that the first pressing portion and the second pressing portion respectively form sharp pressing tips as compared with the first supporting portion and the second supporting portion. The first pressing portion and the second pressing portion sharply bite into the insulating material of the flat conductor, and the effect of preventing the flat conductor from coming off is further increased.

  As described above, the present invention is configured such that the terminal is configured such that the first terminal and the second terminal are mixedly disposed, and the first support portion that supports the flat conductor under contact pressure is formed. The first support arm portion of one terminal has elasticity in the range from the first held portion to the first support portion, and the first contact arm portion increases with the contact pressure when turning the movable member toward the closed position. Since the one support portion is elastically displaced, the movable member is closed even when the connector is completed, that is, before pressing with the flat conductor, even if the first support portion of each first terminal has a variation in position. While reaching the position, the influence of this variation is absorbed, and the first support portion of each first terminal can secure the necessary contact pressure, and contact stability is obtained for all the first terminals. Further, when the movable member is locked at the closed position, since the elastic displacement is present immediately before, the locking force does not increase rapidly, and the operation of the movable member becomes easy. Furthermore, since the second terminal of the second terminal of the second support arm is stationary, when the connector is used, when the flat conductor receives an external force in the direction of reducing the contact pressure in the contact pressure direction, Even if the first support portion of the first terminal is about to be elastically displaced in the same direction, the second support of the second terminal is mixed with the first terminal and the rigidity of the first pressing arm portion of the first terminal is large. Since the portion is in a non-moving position, the force for holding the flat conductor is not reduced, and the flat conductor is not pulled out even if a force in the extraction direction is accompanied.

  Furthermore, the first terminal and the second terminal are mixed in the arrangement direction, and the first support part of the first terminal and the second support part of the second terminal are respectively the first support arm part and the second support arm part. Since it is in a different position in the longitudinal direction, when viewed from all terminals, the first support part and the second support part are distributed over a wide range, and the contact range with the flat conductor is widened. As a result, the flat conductor The contact pressure becomes uniform.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3 of the accompanying drawings.

  FIG. 1 is a perspective view showing the entire back-flip type flat conductor electrical connector of the present embodiment. This connector has two kinds of terminals, the first terminal and the second terminal, alternately in the arrangement direction. FIG. 2 (A) shows the position of the first terminal, and FIG. 2 (B) shows the position of the second terminal. FIG. 6 is a view when the movable member is in an open state. FIGS. 3A and 3B are diagrams corresponding to FIGS. 2A and 2B, respectively, and both are diagrams when the movable member is in the closed position.

As shown in FIG. 1, the connector 1 has a substantially rectangular parallelepiped outer shape and a horizontally long housing 10.
A plurality of first terminals 20 and a plurality of second terminals 30 held by the housing 10 and alternately arranged in the horizontally long direction; a rotatable movable member 40 supported by the housing 10; Furthermore, it has the metal fitting 50 for attaching the said housing 10 to the circuit board which is a connector attachment object.

  The housing 10 is made of an electrical insulating material and has a substantially rectangular outer shape. In FIGS. 2 (A) and 2 (B), each of the plate-like first terminal 20 and second terminal 30 parallel to the paper surface is the same. Slit-like first terminal grooves 11 and second terminal grooves 16 to be inserted in a direction parallel to the plane including the plate surface are alternately arranged in the terminal arrangement direction between the top wall 10A and the bottom wall 10B of the housing 10. Is formed. In the present embodiment, the first terminal 20 and the second terminal 30 are made by processing metal plates having the same thickness. The groove widths of the slit-like first terminal groove 11 and second terminal groove 16 (distance between opposing inner wall surfaces in a direction perpendicular to the paper surface) are slightly larger than the plate thickness of the plate-like terminals. The first terminal 20 is inserted into the first terminal groove 11 from the right end of the housing toward the left, and the second terminal 30 is inserted into the second terminal groove 16 from the left end to the right. It is like that.

  The first terminal groove 11 and the second terminal groove 16 are formed at a predetermined interval in the direction perpendicular to the paper surface corresponding to the terminals, and are formed so as to penetrate the housing 10 from side to side.

  A flat conductor insertion space 12 that connects the plurality of first terminal grooves 11 and the second terminal grooves 16 in a direction perpendicular to the paper surface and opens at the left end of the housing is formed in a substantially left half region in the lateral direction of the housing 10. Has been. The flat conductor insertion space 12 has a dimension slightly larger in the height direction than the thickness of the flat conductor to be inserted, and in the opening, a tapered portion 12A is provided to facilitate the insertion of the flat conductor. I am doing.

  On the other hand, in the substantially right half region of the housing 10 in the horizontal direction, an opening 13 is formed that opens upward and allows the plurality of first terminal grooves 11 and second terminal grooves 16 to communicate with each other in a direction perpendicular to the paper surface. Yes. A movable member 40 which will be described later is disposed in the opening 13.

  The two types of terminals, the first terminal groove 11 and the second terminal groove 16 for the first terminal 20 and the second terminal 30, have a similar shape, but a holding wall portion and a fixing wall described later. The positions of the portions are different in both terminal grooves 11 and 16 due to the insertion direction when the terminals 20 and 30 are assembled.

  The housing 10 includes an island-shaped first holding wall portion 14 between the upper wall 10A and the bottom wall 10B of the housing 10 in the first terminal groove 11 and the second terminal groove 16. And the second holding wall portion 17, and the first holding wall portion 14 and the second holding wall portion 17 are respectively opposed to each other in a direction perpendicular to the paper surface of the first terminal groove 11 and the second terminal groove 16. The wall surfaces are connected. The first holding wall portion 14 is on the left side of the first connecting portion 23 of the first terminal 20 described later, and the second holding wall portion 17 is on the right side of the second connecting portion 33 of the second terminal 30 described later. positioned.

  In the first terminal groove 11, the right end edge of the bottom wall 10B is formed as a first fixed wall portion 10B-1 having a tapered portion, and in the second terminal groove 16, the left end edge of the bottom wall 10B has a tapered portion. The second fixed wall portion 10B-2 is formed.

  The first terminal 20 and the second terminal 30 inserted and held in the first terminal groove 11 and the second terminal groove 16 of the housing 10 maintain the flat surface of the metal plate having the same thickness. As shown in FIGS. 2A and 2B, the first pressing arm portion 21 and the second pressing arm portion 31 located at the upper portion and the first supporting arm portion located at the lower portion, respectively, as shown in FIGS. 22 and a second support arm portion 32. The first pressing arm portion 21 and the second pressing arm portion 31, the first supporting arm portion 22 and the second supporting arm portion 32 extend substantially parallel to the left and right. The two terminal grooves 16 are respectively stored in the upper part and the lower part. The first pressing arm portion 21 and the second pressing arm portion 31, the first supporting arm portion 22 and the second supporting arm portion 32 are respectively at the first connecting portion 23 and the second connecting portion 33 at intermediate positions in the left-right direction. It is connected.

  The first pressing arm portion 21 of the first terminal 20 and the second pressing arm portion 31 of the second terminal 30 are located from the positions of the first connecting portion 23 of the first terminal 20 and the second connecting portion 33 of the second terminal 30. The left and right front end positions have a hook-like first pressing portion 21A and a second pressing portion 31A that protrude downward, respectively, and in the vicinity of the right rear end position. Has a first pressure receiving portion 21B and a second pressure receiving portion 31B for receiving a force from a cam-shaped pressurizing portion described later. The first pressure receiving part 21B is formed with a slightly concave curve, and the second pressure receiving part 31B is formed with a straight part extending rightward through a taper part.

  A first straight edge 21C and a second straight edge 31C are formed on the left side of the first pressure receiving portion 21B and the second pressure receiving portion 31B, respectively. The first pressing arm portion 21 and the second pressing arm portion 31 are located in the opening 13 at the right side of the first connecting portion 23 and the second connecting portion 33, respectively, and the left portion thereof A gap is formed between the upper edge 21E and the upper edge 31E and the inner surface of the upper wall 10A of the housing 10 (the upper groove bottom surfaces of the first terminal groove 11 and the second terminal groove 16). The first pressing arm portion 21 at the left portion of the first connecting portion 23 is longer and thicker than the second pressing arm portion 31 at the left portion of the second connecting portion 33 (see FIG. In the vertical direction). Accordingly, the first pressing portion 21A is located to the left of the second pressing portion 31A.

  Next, the first support arm portion 22 of the first terminal 20 and the second support arm portion 32 of the second terminal 30 are also connected to the first connection arm, like the first press arm portion 21 and the second press arm portion 31. The portion 23 and the second connecting portion 33 extend from the position to the left and to the right, respectively. The first support arm portion 22 of the first terminal 20 and the second support arm portion 32 of the second terminal 30 have slightly different forms and positions, and are as follows.

  The first support arm portion 22 of the first terminal 20 has a hook-shaped first support that protrudes upward at the front end of the portion extending leftward so as to face the first press portion 21A of the first press arm portion 21. A portion 22A is provided. Further, a first held portion 22B that protrudes upward is provided at a position immediately to the left of the first connecting portion 23. When the first terminal 20 is inserted into the first terminal groove 11 from the right side to the left side, the first held portion 22B is formed between the bottom wall 10B of the housing 10 and the island-like first holding wall portion 14. It is press-fitted between and held.

  When the movable member 40 is in the open position as shown in FIG. 2A, the first support arm portion 22 is located on the front end side from the first held portion 22B in the longitudinal direction of the first support arm portion 22. The lower edge forms a gap δ between the bottom wall 10B of the housing, that is, the groove bottom of the first terminal groove 11 over the range up to the first support portion 22A. The gap δ is formed from the position of the first held portion 22B, and its value gradually increases toward the position of the first support portion 22A, and is maximum at the position of the first support portion 22A. Specifically, the maximum value may be about 0.03 mm. The first support portion 22A may be used as a contact portion that comes into contact with the circuit portion of the flat conductor to conduct, or may contact the insulating portion and simply support it.

  The first support arm portion 22 extends to the right side of the first connecting portion 23 to form an extension portion. At the right side of the first connecting portion 23, a protruding first stopper portion 22C, a concavely bent portion 22D and the first connection portion 22E are sequentially provided. In the case of the present embodiment, the concavely curved portion 22D has an arc shape and is formed at a position facing the concave first pressure receiving portion 21B of the first pressing arm portion 21 in the vertical direction. The first connecting portion 22E protrudes rightward out of the housing 10, is bent downward, and has a lower edge located slightly below the lower surface of the bottom wall 10B of the housing 10, and the connector is a circuit board (not shown). When it is arranged, it is connected to the corresponding circuit portion by solder or the like.

  The first connecting portion 22E has a groove-shaped first fixed portion 22E-1 formed in a portion protruding rightward to the outside of the housing 10, and a first fixed wall portion at the right end edge of the bottom wall 10B of the housing. The right portion of the first support arm portion 22 is fixed to the housing 10 by fitting the first fixed portion 22E-1 to 10B-1.

  On the other hand, the 2nd support arm part 32 of the 2nd terminal 30 has the 2nd connection part 32E in the front end of the part extended to the left. The second connection portion 32E protrudes leftward from the housing, and when the connector is arranged on a circuit board (not shown), it is connected to the corresponding circuit by soldering or the like. The second connection portion 32E has a groove-like second fixed portion 32E-1 formed in a portion protruding leftward to the outside of the housing 10, and a second fixed wall portion at the left end edge of the bottom wall 10B of the housing. By fixing the second fixed portion 32E-1 to 10B-2, the left portion of the second support arm portion 32 is fixed to the housing 10 in close contact with the groove bottom of the second terminal groove 16. Yes.

  The second support arm portion 32 includes a second support portion 32A that protrudes upward at a position facing the second pressing portion 31A in the vertical direction between the second connection portion 33 and the second connection portion 32E. Is formed. The second support portion 32A may be used as a contact portion that comes into contact with the circuit portion of the flat conductor, or may simply be in contact with the insulating portion. The second support portion 32A facing the second pressing portion 31A is positioned to the right of the first support portion 22A because the second pressing portion 31A is positioned to the right of the first pressing portion 21A. It will be.

  The second support arm portion 32 is provided with a second held portion 32 </ b> B protruding upward at a position right to the second connecting portion 33. When the second terminal 30 is inserted into the second terminal groove 16 from the left to the right, the second held portion 32B is formed between the bottom wall 10B of the housing 10 and the island-like second holding wall portion 17. It is press-fitted between and held.

  The extension portion extends straighter to the right than the second held portion 32B.

  The movable member 40 is made of an electrical insulating material as in the housing, and in FIGS. 2 (A) and 2 (B), in the direction perpendicular to the paper surface, that is, in the terminal arrangement direction, within the same range as the housing 10. As shown in the drawing, the through-slit first groove 41A and the second groove are formed at positions corresponding to the first terminal 20 and the second terminal 30 in a direction perpendicular to the paper surface. A groove portion 41B is formed, and an upper portion of each of the first groove portion 41A and the second groove portion 41B is an operation portion 42, and a lower portion is an oval first and second cam portions 43A and 43B that form a pressure portion. Yes.

  The movable member 40 is opened by a user's operation in the open position shown in FIGS. 2 (A) and 2 (B), and closed in the horizontal direction shown in FIGS. 3 (A) and 3 (B). It is possible to move between the positions with rotation. 2A and 2B, the movable member 40 has a pressing arm portion 21 of the first terminal 20 and a pressing arm portion of the second terminal 30 in the first and second groove portions 41A and 41B. 31 is incorporated into the housing 10 so that the right part of each of the 31 enters.

  In the first groove portion 41A, the left portion of the first cam portion 43A is close to the first stopper portion 22C of the first support arm portion 22 of the first terminal 20, and the right portion is located immediately above the concavely bent portion 22D. Thus, the first support arm 22 is in contact with the upper edge of the first terminal 20. In FIG. 2A, the lateral length of the first cam portion 43A is made larger than the facing distance between the concave first pressure receiving portion 21B of the first terminal 20 and the concave bent portion 22D.

  On the other hand, in the second groove portion 41B, as shown in FIG. 2B, a second cam portion 43B similar to the first cam portion 43A is located, and its lower edge is at the upper edge of the second support arm portion 32. It is close. Similarly to the first cam portion 43A, the second cam portion 43B has the lateral length of the second cam portion 43B in the same manner as the upper edge of the second support arm portion 32 and the second terminal. It is made larger than the opposing distance with 30 2nd pressure receiving parts 31B. It should be noted that the pressurizing unit is not dependent on the cam unit, and may take other forms as long as it has a shape that presses each pressure receiving unit when the movable member is rotated to the closed position.

  The connector of this embodiment configured as described above is assembled and used in the following manner.

  (1) First, the first terminal 20 and the second terminal 30 are assembled into the housing 10. The first terminal 20 is inserted into the first terminal groove 11 of the housing 10 from the right opening side to the left, and the second terminal 30 is inserted into the second terminal groove 16 from the left opening side to the right. Is done. As the insertion proceeds, the first held portion 22B and the second held portion 32B of the first terminal 20 and the second terminal 30 are the bottom wall 10B of the housing 10, the island-shaped first holding wall portion 14, and the second holding portion, respectively. It is press-fitted between the wall portion 17. At the same time, the first fixed portion 22E-1 formed at the left edge of the first connection portion 22E of the first terminal 20 is fitted to the first fixed wall portion 10B-1 at the right end edge of the bottom wall 10B of the housing 10. The second fixed portion 32E-1 formed at the right edge of the second connection portion 32E of the second terminal 30 is fitted into the second fixed wall portion 10B-2 at the left end edge of the bottom wall 10B of the housing 10. . Thus, the first terminal 20 and the second terminal 30 are positioned at predetermined positions and are firmly held at the positions. In addition, since the said 1st to-be-held part 22B of the 1st terminal 20 press-fitted and hold | maintained is formed higher than the 1st support part 22A, when inserting the 1st terminal 20, the 1st support part which is a 1st contact part 22A can pass between the bottom wall 10B and the first holding wall portion 14 without difficulty.

  (2) Next, the movable member 40 is assembled in the state shown in FIG. 1 and FIGS. 2A and 2B, that is, in the open position that stands upright. The first pressing arm portion 21 and the right portion of the second pressing arm portion 31 of the first terminal 20 and the second terminal 30 enter the first groove portion 41A and the second groove portion 41B of the movable member 40, respectively. The movable member 40 is moved to the left. In the movable member 40, the first cam portion 43 </ b> A is accommodated in a concave portion between the first stopper portion 22 </ b> C and the concave bent portion 22 </ b> D of the first terminal 20. Thus, the assembly of the connector is completed.

  (3) Such a connector is brought on a predetermined circuit board (not shown) in use. The first connection portion 22E and the second connection portion 32E of the first terminal 20 and the second terminal 30 are respectively connected to the corresponding circuit portion by solder or the like, and are fixed to the circuit board by a metal fitting 40 or a screw.

  (4) Next, a flat conductor C, for example, a flexible board is inserted into the cable insertion space 12 from the left side, and thereafter, from FIG. 2 (A), (B) to FIG. 3 (A), (B). As can be seen, the movable member 40 is rotated clockwise toward the closed position. When the movable member 40 is rotated, the first cam portion 43A and the second cam portion 43B are moved from the horizontal postures shown in FIGS. 2A and 2B to the vertical postures shown in FIGS. 3A and 3B. Thus, the first terminal 20 and the second terminal 30 are pressed upward by the first pressure receiving portion 21B of the first pressing arm portion 21 and the second pressure receiving portion 31B of the second pressing arm portion 31, respectively. Thus, the first pressing arm portion 21 and the second pressing arm portion 31 are inclined and displaced upward at the portion on the right side of the first connecting portion 23 and the second connecting portion 33. Therefore, according to the lever principle, the first pressing arm portion 21 and the second pressing arm portion 31 have the first connecting portion 23 and the second connecting portion 31 as fulcrums, respectively. The left part of the part 33 is inclined and displaced downward. As a result, the first pressing portion 21A, the second pressing portion 31A, the first supporting arm portion 22 and the first pressing arm portion 21 and the second pressing arm portion 31 of the first terminal 20 and the second terminal 30, respectively. The flat conductor C inserted between the first support portion 22A and the second support portion 32A respectively formed on the second support arm portion 32 is moved downward by the first pressing portion 21A and the second pressing portion 31A. As a result, the first pressing portion 21A and the second pressing portion 31A are sandwiched between the first supporting portion 22A and the second supporting portion 32A.

  (5) As a result of the flat conductor C being pressed downward, the first support portion 22A of the first terminal 20 and the second support portion 32A of the second terminal 30 are pressed. The first terminal 20 and the second terminal 30 will be described separately.

  (I) Since this flat conductor C pushes the first support arm portion 22 downward with respect to the first terminal 20 by the first support portion 22A, the bottom wall 10B of the housing 10 (of the first terminal groove 11). The first support arm portion 22 having a gap with respect to the bottom of the groove) has a flexible portion between the first supported portion 22B and the first support portion 22A. Bends downwards. The flexible portion bends in a cantilever shape with a position corresponding to the first held portion 22B in the longitudinal direction of the first support arm portion 22 as a fulcrum. This bending gradually increases as the movable member 40 moves toward the closed position, and the bending of the flexible portion stops by contacting the bottom wall 10B. As supported.

        Thus, the first support portion 22A of the first support arm portion 22 that sandwiches the flat conductor C in cooperation with the first press portion 21A of the first press arm portion 21 sandwiches the flat conductor C. However, even if there is a variation in the position of the first support portion 22A in the vertical direction between the first terminals 20 before clamping, the flat conductor C is The first support portions 22A of all the first terminals 20 come into contact with each other, and the force that sandwiches the flat conductor C by being supported by the bottom wall 10B when the flexible portion comes into contact with the bottom wall 10B is The contact pressure exceeding a predetermined value is secured in all the support portions 22A. After the flexible portion comes into contact with the bottom wall 10B, the pressing force of the movable member reaches a peak, and then decreases slightly, and the movable member 30 is locked by a lock portion (not shown) to keep the closed position. Immediately before locking, the bending at the flexible part brings a reaction force corresponding to the bending to the movable member 40. Therefore, the force required to lock the movable member does not increase suddenly and is smooth. Locked to.

  (Ii) On the other hand, the flat conductor C also pushes the second support arm portion 32 downward with the second support portion 32A of the second terminal 30. To the bottom wall 10B of the housing 10 and does not have elasticity. Therefore, the flat conductor C 1 is supported by pressing between the second support portion 32A that is always in a fixed position and the second pressing portion 31A that is inclined and displaced downward.

  (6) If the flat conductor C held in this way has the connection circuit surface C1 on the lower surface, the first support portion 22A and the second support portion 32A are in electrical contact with the terminals. If the connection circuit surface C1 is provided on the upper surface, the first pressing portion 21A and the first pressing portion 31A are connected. Of course, if the connection circuit surface C1 is provided on both sides, the two parts 21A, 22A and 31A, 32A are connected. At the time of connection with the flat conductor C, the first pressing portion 21A and the second pressing portion 31A formed sharply downward are the reinforcing plate C2 of the flat conductor C (the surface opposite to the connection circuit surface of the flat conductor). It is possible to reliably prevent the flat conductor from coming off by biting into a reinforcing member made of an insulating material provided on the surface. In particular, in the second terminal 30, the second support portion 32 </ b> A that supports the flat conductor C from below is in a fixed position without elastic displacement, so that when the flat conductor C attempts to move downward, it escapes. Without being supported, the second pressing portion 31A strongly bites into the reinforcing plate.

  Further, in the present invention, the first terminal 20 and the second terminal 30 are mixed and arranged, and the first support portion 22A and the second support portion 32A are shifted to the left and right. The support points are dispersed over a wide range and the contact is stabilized. If the 1st terminal 20 and the 2nd terminal 30 are arrange | positioned by turns, a support point will become a staggered arrangement | positioning and will be stabilized further.

  In the present invention, the elastic displacement amount of the first support portion 22A of the first terminal 20 can be set as appropriate. For example, when the movable member comes to the closed position, the first support portion 22A may be at the same level position as the second support portion 32A of the second terminal 30, or may be at a different level position. You can also. In the former case, the lower surface of the flat conductor forms a flat surface and the support at all terminals is stable, and in the latter case, the flat conductor forms a wavefront according to the level difference and the tensile force accompanying its deformation This effectively bites the second terminal 30, particularly the second pressing portion 31 </ b> A, and prevents the flat conductor from coming off.

It is a perspective view showing the whole electric connector for flat type conductors of one embodiment of the present invention. FIG. 2 is a cross-sectional view of the connector of FIG. 1 at a terminal position, where (A) is a first terminal position, and (B) is a cross-section at a second terminal position, showing a state where the movable member is in an open position. FIGS. 2A and 2B are cross-sectional views at the terminal position of the connector of FIG. 1, where FIG. 1A is a first terminal position, and FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Housing 30 2nd terminal 11 1st terminal groove 31 2nd press arm part 14 1st holding wall part 31A 2nd press part 16 2nd terminal groove 31B 2nd pressure receiving part 17 2nd holding wall part 32 2nd support arm part 20 1st terminal 32A 2nd support part
21 1st press arm part 32B 2nd to-be-held part
21A 1st press part 32E-1 2nd to-be-fixed part 21B 1st pressure receiving part 33 2nd connection part 22E-1 1st to-be-fixed part 40 Movable member 22A 1st support part 43A 1st pressurization (cam) part 22B 1st One part to be held 43B Second pressure (cam) part 23 First connecting part C Flat conductor

Claims (6)

  A plurality of terminals obtained by externalizing the metal plate while maintaining a flat plate surface of the metal plate, and a terminal groove for receiving the plurality of terminals at a predetermined interval with the direction perpendicular to the plate surface as an array direction And a movable member movable with rotation between an open position enabling insertion of the flat conductor into the housing and a closed position pressing the flat conductor, and the terminals are arranged. The first and second terminals have two types of first terminal and second terminal arranged in a mixed manner, and the first and second terminals are hook-shaped first and second pressing arms extending with the flat conductor insertion / extraction direction as the longitudinal direction. And first and second portions extending in the same direction connected to the first and second pressing arm portions by first and second connecting portions at intermediate positions in the longitudinal direction of the first and second pressing arm portions. And the first and second pressing arms are on one end side. The first and second pressing portions for pressing the flat conductor and the force from the first and second pressing portions of the movable member when the movable member is moved to the closed position on the other end side. First and second pressure receiving portions for receiving pressure, said first and second support arm portions having respective first and second support portions for supporting a flat conductor on said one end side, and The first and second pressure arm portions receive the forces from the first and second pressure portions at the first and second pressure receiving portions, respectively, so that the first and second pressure receiving portions are in the same plane as the plate surface of the terminal. In the flat conductor electrical connector that generates elastic displacement at the first and second support portions and the flat conductor, the first and second pressurizing portions of the movable member have the movable member When in the open position, the flat conductor is placed between the first pressing part and the first support part on the one end side. It can be inserted between the two pressing parts and the second support part, and has a shape to pressurize the first and second pressure receiving parts in the closed position, The first and second support arm portions have first and second held portions that are fixedly held in the first and second terminal grooves of the housing, respectively. A first held portion that is inserted into the first terminal groove from the end side and provided on the first support arm portion at a position adjacent to the first connection portion on one end side with respect to the first connection portion, and the other end The first support arm portion of the first terminal is attached to the housing with the first fixed portion provided on the first support portion on the side until the movable member reaches the closed position from the open position. During, the edge on the opposite side of the first support portion is the range from the first held portion to the first support portion. Thus, while being elastically deformable and forming a gap gradually widening toward the first support portion between the bottom of the first terminal groove of the housing and when the movable member reaches the closed position, The first support portion is pressed against the flat conductor, and the first support arm portion is elastically deformed so that the gap disappears and comes into contact with the groove bottom of the first terminal groove. A second held portion that is inserted into the second terminal groove from one end side and is provided on the second support arm portion at a position adjacent to the second connection portion on the other end side of the second connection portion; and one end It is attached to the housing with a second fixed part provided on the second support part on the side, and the first pressing part of the first terminal is more rigid than the second pressing arm part of the second terminal. In the longitudinal direction, the first contact portion is located closer to one end of the housing than the second contact portion. Flat conductor electrical connector as.   The electrical connector for a flat conductor according to claim 1, wherein the first terminals and the second terminals are arranged alternately.   The flat conductor for a flat conductor according to claim 1 or 2, wherein the first support arm portion is linearly widened toward the first support portion with respect to the groove bottom of the first terminal groove. Electrical connector.   The housing has the first and second held portions at the positions corresponding to the first and second held portions in the longitudinal direction of the first and second support arms of the first and second terminals. 4. The electrical connector for a flat conductor according to claim 1, further comprising first and second holding wall portions sandwiched between the bottoms of the two terminal grooves. .   4. The first and second support portions of the first and second terminals are first and second contact portions that make electrical connection with the flat conductor, respectively. An electrical connector for a flat conductor as described in 1.   The electrical connector for a flat conductor according to claim 1, wherein the first pressing portion and the second pressing portion form sharp pressing tips as compared with the first supporting portion and the second supporting portion, respectively.

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