KR20110132254A - Electric connector for flat conductor - Google Patents

Abstract

PURPOSE: An electrical connector for a flat type conductor is provided to minimize a closing location, the size of a connector, and a projection rate by increasing the manipulation rate of a driving member. CONSTITUTION: The lower cam edges(55A, 56A) of a first cam unit(55) and a second cam unit(56) are established. The first cam unit and the second cam unit are connected to a first terminal(20) and a second terminal(30). The first cam unit and the second cam unit reduce a manufacturing error and an assembly error. Upper arm units(21, 31) reduce the deviation of the terminals.

Description

ELECTRIC CONNECTOR FOR FLAT CONDUCTOR

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

Patent Literature 1 discloses a connector having an upper arm portion and a lower arm portion extending in the front-rear direction and forming a horizontal H-shape in which both are connected by a connecting portion. In this patent document 1, a terminal consists of two types, and all have a horizontal H shape, and one kind of terminal is attached to the housing from the front, and the other kind of terminal is attached to the housing from the rear. Although different in detail including the connection part for connection to a circuit board from this mounting direction difference, the terminal of both types is basically the same shape by the point which has the horizontal H shape. In the state of being attached to the housing, the FPC which is a connection object is inserted between the upper arm part and the lower arm part on the rear side of both types of terminals, and between the upper arm part and the lower arm part on the front side of both types of terminals. By operating a movable member (operating member) having a cam portion positioned corresponding to each terminal, the cam portion lifts up all of the upper arm portions of both types of terminals, and in principle, the upper arm portion is positioned at the position of the connecting portion. The rear portion of the upper arm portion is elastically displaced downward. The rear part of this terminal presses down a flat conductor by the elastic deformation, and ensures connection with the rear part of the lower arm part of a terminal.

In Patent Document 1, the cam portion of the movable member obtains a reaction force from the lower side when the movable member is operated, and the upper edge of the cam portion of the movable member causes the upper edge portion of both terminals to be different from any of the terminals of both types. Contact it directly and lift it upwards. On the other hand, the lower edge of the cam presses the lower arm portion of the terminal directly against the terminal to obtain a reaction force upward, while for the other terminal, press the housing holding the lower arm portion of the terminal of the other type. Is getting.

Japanese Patent No. 4279823

In Patent Literature 1, the cam portion of the movable member is in contact with only this terminal, while the cam portion corresponding to a kind of terminal abuts, but the cam portion corresponding to another type of terminal abuts the terminal at the upper edge and the housing at the lower edge. All. Therefore, the cam part located corresponding to the terminal of a different kind is supported by up and down direction by two different members, and is positioned. In general, members are accompanied by manufacturing errors and assembly errors. Therefore, there is a possibility that this cam portion has a position error in which errors for the two members are weighted. This increases the error with respect to the lifting amount of all the upper arm portions of the terminal, and as a result, increases the error of the amount of elastic displacement at the rear portion of the upper arm portion. The error in the amount of elastic displacement leads to a difference in the contact pressure at the one type and the other type of terminal with respect to the contact pressure between the balanced conductor and the terminal. This lowers the reliability of the connection state between the terminal and the balanced conductor.

In view of such circumstances, the present invention has two types of terminals having different mounting directions with respect to the housing, and the cam part of the movable member contacts only the terminals with respect to both types of terminals so that the position error of the cam part is as small as possible. An object of the present invention is to provide an electrical connector for a balanced conductor that can be suppressed.

The electrical connector for flat conductor which concerns on this invention is made by maintaining the flat plate surface of a metal plate, The several terminal in which the upper arm part and the lower arm part extended in the front-back direction are connected by the connection part in the middle part of the front-back direction, and A housing having a terminal groove for arranging and holding the terminal at right angles to the plate surface of the terminal, and a housing having a receiving opening for a balanced conductor for opening toward the rear; an open position for allowing insertion of the balanced conductor into the receiving opening; It has a movable member which can move between the closed positions which press the balanced conductor after insertion to the said upper arm part, A some terminal of the 1st terminal mounted from the front side with respect to the said terminal groove, and the 2nd terminal mounted from the rear side An island-shaped positioning rule in the terminal groove having two kinds of terminals and at least the second terminal is mounted When a flat conductor is inserted into the accommodation opening while the movable member is in the open position and the movable member moves to the closed position, the cam portion formed on the movable member is formed of the first terminal and the second terminal, respectively. The balance conductor is pushed downward by lifting the entire upper arm portion of the upper portion of the upper arm portion and elastically displacing the rear portion of the upper arm portion downward.

In such a flat conductor electrical connector, in the present invention, the lower arm portion of the second terminal is positioned in front of the connecting portion corresponding to the position regulating portion, and the contact portion with the cam is regulated in the vertical direction. Located at or below the lower edge of the negative,

The lower arm portion of the first terminal portion is in contact with the cam portion formed in the front portion than the connecting portion in an upward direction than the abutment portion of the second terminal in the vertical direction, and the cam portion of the movable member is formed in the terminal arrangement direction. Each of the first cam portion and the second cam portion is positioned at a position corresponding to the first terminal and the second terminal, and the first cam portion and the second cam portion are rotated about the common axis, so that the upper and lower portions of the first terminal and the second terminal are respectively lowered. It has an upper cam edge and a lower cam edge which abut the front part of an arm part and a lower arm part, and each lower cam edge of the said 1st cam part and the 2nd cam part has a lower side at the time of rotational movement from the open position of a movable member to a closed position. The difference between cam radius lengths in arbitrary same angular position in the sliding contact range which slide-contacts an arm part is formed uniformly, It is characterized by the above-mentioned. And a.

In the connector according to the present invention having such a configuration, with respect to the housing, the first terminal is mounted in the corresponding terminal groove from the front and the second terminal from the rear, respectively. An island-shaped position regulating portion is formed in the terminal groove for the second terminal, and the connecting portion connecting the upper arm portion and the lower arm portion of the second terminal is positioned behind the position regulating portion in the front-back direction, that is, the lower side. The arm portion is positioned in front of the connecting portion corresponding to the position restricting portion. The contact part with the cam formed in the upper edge of this front part is located the same as or lower than the lower edge of the said position regulation part. For this reason, when the second terminal is mounted from the rear, the position regulating portion does not interfere with the front portion of the lower arm portion forming the abutment portion, and the second terminal can be mounted from the rear. do. On the other hand, since the first terminal is mounted from the front, the position of the contact portion with the cam of the first terminal is completely correlated even if the position of the contact portion with the cam of the second terminal is located irrespective of the presence or absence of the corresponding position regulating portion. none.

The movable member has a first cam portion and a second cam portion corresponding to the first terminal and the second terminal, respectively, and both cam portions are rotated around the common axis. Therefore, the distance from the axis line of a 1st cam part and a 2nd cam part to the contact part of each of a 1st terminal and a 2nd terminal becomes large in a 2nd terminal with respect to a 1st terminal. In the present invention, since the distance between the first cam portion and the second cam portion is set to the difference between the cam radii at their lower cam edges, in the sliding contact range, the upper cam edges as well as the lower cams are rotated in the sliding contact range. The edge is also in direct contact with the terminal. Therefore, the manufacturing and assembly errors between the movable member and the housing can be reduced with respect to the position of the cam portion, and the variation in the two types of terminals with respect to the contact pressure between the balanced conductor and the terminal is eliminated, and the contact is stabilized.

In addition, in the present invention, in the above-described situation, the cam axis can be positioned upward, and even if the length of the operating portion of the movable member is reduced, the operating member is in the open position. While the protrusion amount upwards out of the housing is secured to a size that improves the operability of the movable member, the protrusion amount out of the housing in the front-rear direction of the connector in the closed position does not increase, and in this closed position, that is, the use state of the connector Can be miniaturized.

In the present invention, the movable member can be such that the lower cam edges of the first cam portion and the second cam portion are formed in an arc. In this case, the lower cam edges of the first cam portion and the second cam portion are formed as part of concentric circles with a cam radius difference. In this invention, as long as it has the said cam radius, a 1st cam part and a 2nd cam part can be formed also by curves other than a circular arc.

In the present invention, the lower arm portion of the terminal has a concave curved portion along the lower cam edge in the sliding contact range of the first cam portion in the first terminal, and has a straight portion extending in the front-rear direction in the second terminal. Can be. The concave curved portion and the linear portion thus formed support the lower cam edges of the corresponding first cam portion and the second cam portion, respectively. Such a concave curved portion in the first terminal prevents the cam from coming off, and the straight portion of the second terminal enables insertion from the rear of the second terminal.

The present invention provides a difference in height so as to permit the mounting of abutting portions in contact with the cam portion of the movable member for pressing the balanced conductors with respect to the two types of terminals mounted to the housing from the front and the rear as described above. Since the cam part can be supported only by the terminal, as a result, manufacturing error and assembly error can be suppressed to the minimum, and there is no deviation in the pressing force of the terminal to the balanced conductor, and the distance between the terminal and the balanced conductor Connection reliability is increased. In addition to this, in the present invention, the axis of the cam can be positioned upward, and even if the length of the operation portion of the movable member is reduced, the movable member is in an open position and directed upward out of the housing of the operation portion. While the protrusion amount is secured to a size that improves the operability of the movable member, the protrusion amount out of the housing in the front-rear direction of the connector in the closed position does not increase, thereby miniaturizing the closed position, that is, the state of use of the connector. have

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the external appearance with respect to the whole connector as one Embodiment of this invention.
2 is a cross-sectional view of the movable member in the open position with respect to the connector of FIG. 1, (A) is a first terminal, (B) is a second terminal, and (C) is a view in the position of the bracket. .
3 is a sectional view of a movable member in a closed position with respect to the connector of FIG. 1, (A) is a first terminal, (B) is a second terminal, and (C) is a view in the position of a metal fitting. .

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on an accompanying drawing.

In FIG. 1, the code | symbol 1 is a connector of this embodiment, and F is a balanced conductor connected to this connector 1. In FIG.

Although the flat conductor F has a connection part with the said connector 1 in the front-end part (upper right edge part in drawing), and is extended in the back, in the figure, the part to the immediately rear position of a connection part is It is shown and behind it, illustration is abbreviate | omitted. In the said flat conductor F, in this embodiment, the coating | cover of the upper surface of the front-end part is removed, the connection circuit part F1 is closed, and it forms the connection part. This connecting portion is coated with a reinforcing sheet F2 on the lower surface for strength improvement at the time of connection with a connector.

In the connection part of this balanced conductor F, the to-be-engaged part F3 is formed in the width direction both edges by the notch part. The cut-out hooked portion F3 enters and latches the hook-shaped hook portion described later, which contributes to preventing the balanced conductor F from being pulled out.

As for the connection circuit part F1 in the connection part of the said balanced conductor F, the pad F4 formed in each of the some wiring part arrange | positioned in the said width direction is formed, and the pad F4 is alternately back and forth and zigzags. It is arranged in a shape.

On the other hand, the connector 1 consists of the connector main body 2 and the movable member 3 supported by the connector main body 2 by motion.

The connector body 2 includes a housing 10 made of an electrical insulating material, two types of terminals made of a metal plate and held by the housing 10 and the first terminal 20 and the second terminal 30; Like these terminals, it is made of a metal plate and has a metal fitting 40 held by the housing 10.

The housing 10 has a substantially rectangular parallelepiped shape that is long in the width direction of the flat conductor F and has a relatively small height dimension, and has two kinds of slit-shaped first terminal grooves 11 and a second terminal penetrating in the front-rear direction. Grooves 12 are alternately formed in the width direction. The first terminal 20 and the second terminal 30 are respectively inserted into and held in two kinds of the first terminal grooves 11 and the second terminal grooves 12, and the arrangement of the terminals in the width direction is performed. Forming a range. On the outside of the arrangement range of the terminal, the metal groove 13 for holding the metal fitting 40 is formed in the same slit shape as the terminal grooves 11 and 12 and penetrates in the front-rear direction.

Since the first terminal 20, the second terminal 30, and the metal fitting 40 are made to maintain a flat plate surface of the metal plate, the first terminal groove 11 and the second terminal groove 12 which hold them in place. ) Also, the groove width in the metal fitting groove 13 is also substantially equal to the plate thickness of the first terminal 20, the second terminal 30, and the metal fitting 40 in the terminal arrangement direction. ), (B) and (C), the direction perpendicular to the surface is the groove width.

The first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 are the upper walls of the housing 10, as shown in FIGS. 2A, 2B and 2C, respectively. It penetrates in the front-back direction (right direction and left direction in drawing) between 14 and the bottom wall 15. As shown in FIG. These 1st terminal groove 11, the 2nd terminal groove 12, and the metal fitting groove 13 are communicated with the communication groove extended in the direction perpendicular to the ground of FIG. There is provided a receiving opening portion 16 through which the communication groove opens to the rear side, and the connecting opening portion of the balanced conductor F can be introduced into the receiving opening portion 16. In this way, the 1st terminal groove 11, the 2nd terminal groove 12, and the metal fitting groove 13 are formed in the rear part of them by the said accommodating opening part 16, and the 1st 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 also have the metal upper groove 13A and the metal lower groove 13B.

The said 1st terminal groove 11, the 2nd terminal groove 12, and the metal fitting groove 13 also communicate with all of them. That is, all of these 1st terminal groove 11, the 2nd terminal groove 12, and the metal fitting groove 13 are opened by the open space 17 formed above the bottom wall 15 of the said housing | casing 10. FIG. In communication. Therefore, in all of these, the upper wall 14 is cut out, and this open space 17 enables arrangement | positioning formation and rotational movement of the movable member 3. The upper wall 14 has a notch at the rear portion as shown in Fig. 2C at the positions of the metal fitting grooves 13 on both ends in the terminal arrangement direction, and the metal fitting 40 here Sufficient displacement above the corresponding portion is enabled.

In the first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13, in the front-back direction, a portion located between the entire open space 17 and the rear accommodating opening portion 16 is provided. In the vertical direction, the position limiting portions 18A, 18B and 18C each formed in an island shape are formed between the upper wall 14 and the bottom wall 15, and opposing inner surfaces of the grooves are connected to each other. Although the position regulating parts 18B and 18C formed in the said 2nd terminal groove 12 and the metal fitting groove 13 are mutually in the same position in the front-back direction, the position regulating part 18A formed in the 1st terminal groove 11 is shown. It is located further ahead.

In the terminal arrangement direction, portions of the bottom wall 15 corresponding to the first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 are described in the first terminal 20 and the second terminal described later. 30, and a fixing part for fixing the metal fitting 40 is formed. The fixing portion 19A in the first terminal groove 11 is formed with the front end portion of the bottom wall 15 forming a tapered portion, and the fixing portion 19B in the second terminal groove 12 and the metal fitting groove 13 is formed. 19C), the rear end of the bottom wall 15 is formed in the taper part.

The first terminal 20, the second terminal 30, and the metal fittings 40 each inserted into and held in the first terminal groove 11, the second terminal groove 12, and the metal fitting groove 13 are all metal plates. It is made to maintain a flat plate surface, and has an approximately horizontal H shape, and each has an upper arm portion (21; 31; 41) and a lower arm portion (22; 32; 42), both of which are intermediate portions in the front-rear direction. It is connected by the connecting parts 23; 33; 43 which are located in. The connecting portion 23 of the first terminal 20 is located in front of the corresponding position regulating portion 18A, and the connecting portions 33 and 43 of the second terminal 30 and the metal fitting 40 are all corresponding positions. It is located behind the regulation part 18B; 18C.

As shown in FIG. 2 (A), the first terminal 20 extends up to the front end of the housing 10, but only extends to the intermediate position at the rear side. The upper arm portion 21 forms a hydraulic pressure arm portion 24 in front of the connecting portion 23 and is located upward from the rear flexible arm portion 25 via an inclined portion. The hydraulic arm part 24 is formed with a hydraulic recess 24A at its lower edge, and a pressure protrusion 25A protruding downward at the rear end of the flexible arm 25 is formed. The upper arm portion 21 is the flexible member with the position of the connecting portion 23 as a point on the principle of lever when the hydraulic pressure recessed portion 24A receives a force upward from the movable member 3 to be described later. The arm part 25 is bent downward and inclined.

The lower arm portion 22 of the first terminal 20 has a rear portion extending in the front-rear direction to a position substantially equal to the flexible arm portion 25 of the upper arm portion 21, but all of the upper arm portion It extends forward than the hydraulic arm part 24 of 21, and the front end protrudes out of the housing. This lower arm part 22 has the front fixed arm part 26 and the back fixed arm part 27 back and forth with respect to the position of the connection part 23. As shown in FIG. The front fixed arm part 26 has the cam support part 28 which protrudes upward from the rear direction middle part, and the connection part 29 which protrudes out of a housing toward the front.

The cam support part 28 has an upper edge reaching an upper position than the lower edge of the island-shaped position limiting part 18A of the housing 10, and the cam abutting portion 28A at the upper edge of the substantially L-shape. To form. The cam contact portion 28A has a straight edge portion 28A-1 extending in the front-rear direction and an arc-shaped portion 28A-2 formed at the corner portion. The arc-shaped portion 28A-2 is slightly sunk than the straight edge portion 28A-1 in the vertical direction.

The connecting portion 29 is bent downward to have a lower edge positioned slightly below the bottom surface of the bottom wall 15 of the housing 10, and the lower edge thereof is in contact with the corresponding circuit surface of the circuit board. Solder connection is enabled. This connecting portion 29 is provided with a recessed groove-shaped retaining portion 29A on its rear edge side, and the fixed portion 29A has a tapered shape formed on the bottom wall 15 of the housing 10 described above. It press-fits to the government 19A and plays the role of the fixing | fixed with the housing 10 of the 1st terminal 20. As shown in FIG.

The rear fixed arm portion 27 of the lower arm portion 22 of the first terminal 20 extends rearward from the position of the connecting portion 23 and corresponds to the pressing protrusion 25A of the upper arm portion 21. It is reaching the position. At the rear end of the post-fixed arm portion 27, a contact portion 27A is formed to protrude upwardly opposite the pressurized projection portion 25A. The rear fixing arm portion 27 is provided with a locking projection 27B projecting upward at a position corresponding to the position regulating portion 18A of the housing 10 in the front-rear direction.

The first terminal 20 thus formed is inserted into the first terminal groove 11 from the front toward the rear. When inserted to a predetermined position, the rear fixed arm portion 27 of the lower arm portion 22 penetrates between the bottom wall 15 of the housing 10 and the island-shaped position regulating portion 18A, thereby supporting the rear fixed arm portion ( While the locking projection 27B formed in the 27 is dug to the lower edge of the position limiting portion 18A, the retaining portion 29A of the front fixed arm portion 26 is formed on the bottom wall 15 of the housing 10. It is fixed by being fitted in the fixing | fixed part 19A, and the omission of the said 1st terminal 20 is prevented.

As shown in FIG. 2B, the second terminal 30 extends to the front end of the housing 10 forward and to the rear end position rearward. The upper arm portion 31 forms the hydraulic arm portion 34 in front of the connecting portion 33 and the flexible arm portion 35 in the rear portion. 34A of hydraulic pressure recesses are formed in the lower edge of the said hydraulic arm part 34, and the pressing protrusion part 35A which protrudes downward is formed in the rear end of the flexible arm part 35. As shown in FIG. In the upper arm part 31, when the hydraulic concave part 34A receives a force upward from the movable member described later, the flexible arm part (with the position of the connecting part 33 as a point) is employed in principle. 35) is bent downward and inclined.

Although the lower arm part 32 of the said 2nd terminal 30 extends in the front-back direction to almost the same position as the hydraulic arm part 34 of the said upper arm part 31, the rear part is the said upper arm part. It extends behind the flexible arm part 35 of 31, and the rear end protrudes out of the housing. This lower arm part 32 has the front fixed arm part 36 and the back fixed arm part 37 back and forth with respect to the position of the connection part 33. As shown in FIG. The front fixed arm part 36 has the cam support part 38 formed in the whole.

The cam support portion 38 of the front fixed arm portion 36 has an upper edge positioned at or below the lower edge of the island-shaped position limiting portion 18B of the housing 10, and forms a straight edge. The cam contacting portion 38A is formed.

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

In the said 2nd terminal 30, as mentioned above, the connection part 39 is formed in the rear end part which becomes a side opposite to the 1st terminal 20 in the front-back direction.

The connecting portion 39 formed to protrude out of the housing at the rear end of the rear fixed arm portion 37 extends bent downward to have a lower edge positioned slightly below the bottom of the bottom wall 15 of the housing 10. The lower edge thereof is in contact with the corresponding circuit surface of the circuit board to enable solder connection. The connecting portion 39 is provided with a cutting groove-shaped fixing portion 39A on its front edge side, and the fixing portion 39A is press-fitted into the tapered fixing portion 19B of the housing 10 described above. Thus, the second terminal 30 plays a role of fixing to the housing 10.

The pressing protrusion part 35A is positioned at the post-fixing arm part 37 of the lower arm part 32 of the second terminal 30 at a position corresponding to the pressing protrusion part 35A slightly ahead of the connecting part 39. The contact part 37A which protrudes upwards opposing is formed.

The 2nd terminal 30 formed in this way is inserted in the 2nd terminal groove 12 toward the front from behind. When inserted to a predetermined position, the pre-fixed arm portion 36 of the lower arm portion 32 penetrates between the bottom wall 15 of the housing 10 and the island-shaped position regulating portion 18B, thereby providing a pre-fixed arm portion ( While the engaging projection 36B formed in the 36 is dug to the lower edge of the position regulating portion 18B, the fixing portion 39A of the rear fixed arm portion 37 is formed of the bottom wall 15 of the housing 10. It is fixed by being fitted in the fixing | fixed part 19B, and the omission of the said 2nd terminal 30 is prevented.

The metal fitting 40 is made in the form similar to the 2nd terminal 30, as shown to FIG. In comparison with the second terminal 30, the difference is that the engaging portion 45A at the rear end of the upper arm portion 41 has the same shape as the pressing projection portion 35A of the second terminal 30, but is larger. It is a point which does not have a part corresponding to the contact part 37A of the 2nd terminal 30 in the formed point and the rear end of the lower arm part 42. FIG. In addition, since it is the same as that of the 2nd terminal 30, description is abbreviate | omitted by adding "10" to the code | symbol of the 2nd terminal 30, and making it the code | symbol of "40" band.

The engaging portion 45A of the metal fitting 40 has a large hook shape, protrudes downward, the front edge is substantially perpendicular to the front and rear direction, and the rear edge forms the inclined edge toward the lower end. The flexible arm part 45 of the upper arm part 41 in which the hanging part 45A is formed is inclined upwards slightly toward the rear, and is pressed by the tip of the flat conductor F to be inserted ( Elastic deflection is generated so that 45A) is further inclined upward, and further insertion to the predetermined position of the balanced conductor F is made possible. The notch part in the rear part mentioned above of the upper wall 14 of the housing | casing 10 allows this elastic bending with respect to the upper side of the flexible arm part 45. As shown in FIG.

Thus, the movable member 3 is movable in the connector main body 2 in which the 1st terminal 20, the 2nd terminal 30, and the metal fitting 40 are hold | maintained with respect to the housing | casing 10, and this embodiment It is supported so that rotation movement is possible.

As shown in FIG. 1, this movable member 3 is made of the same electrical insulating material as the housing 10 as a member extending over almost all the widths of the housing 10.

The movable member 3 is rotatably supported between the open position shown in FIG. 2 and the closed position shown in FIG. 3. In FIG. 2, the rotational motion axis of the movable member 3 is located in the lower half of the movable member 3, and the lower half of the movable member 3 enters the open space 17 formed in all of the housings 10. In Fig. 2, outside the open space 17, the upper half portion projecting upward from the upper wall 14 of the housing 10 is an operation portion 51 for the user to operate the movable member 3 in a rotational motion. have.

The lower half of the movable member 3 in FIG. 2 corresponds to the first terminal 20, the second terminal 30, and the metal fitting 40 in the width direction (terminal arrangement direction) of the movable member 3. In the position where the first terminal 20, the second terminal 30 and the upper arm portions 21; 31; 41 of each of the metal fittings 40 are allowed to enter, the slit-shaped first groove portion 52 is allowed. ), The second groove portion 53 and the third groove portion 54 are formed to penetrate back and forth. Therefore, the groove widths (widths between the groove inner surfaces in the direction perpendicular to the ground) of these first groove portions 52, the second groove portions 53, and the third groove portions 54 are the first terminals 20 and the second. It has a dimension slightly larger than the thickness of each of the terminal 30 and the metal fitting 40. In the first groove portion 52, the second groove portion 53, and the third groove portion 54, a first cam portion 55, a second cam portion 56, and a third cam portion 57 connecting the inner surfaces of the grooves are provided. Each is formed.

As shown in FIG. 2A, the first cam portion 55 formed in the first groove portion 52 corresponding to the first terminal 20 is formed of the first member of the movable member 3 in the open position. It is located in the lower part of the 1 groove part 52, and has a long elliptical cross section. The rotational movement center X of the first cam portion 55 is located on an extension line of the rotational movement axis of the movable member 3 described above on the center of curvature of the arc portion on the right side of the elliptic cross section. Therefore, the cam radius is the straight line which makes the said rotational center X one end, and makes arbitrary points of the said circular arc part the other end. In this way, of the circular arc parts on the left and right sides of the first cam part 55, the right arc part in which the rotational center X exists exists the lower cam edge 55A, and the left arc part forms the upper cam edge 55B. do. The lower cam edge 55A forms a sliding contact range in sliding contact with the abutting portion 28A. The upper cam edge 55B is a hydraulic pressure of the upper arm portion 21 of the first terminal 20 when the first cam portion 55 is rotated to the closed position of FIG. 3 about the rotational movement center X. FIG. The arm portion 24 is spaced apart from the lower cam edge 55A by a sufficient amount to be pushed upward from the hydraulic recess 24A to elastically displace. The lower cam edge 55A has a slight gap between the circumferential arc-shaped portion 28A-2 of the cam abutting portion 28A in the open position shown in FIG. 2A. In accordance with the rotational movement to the closed position, the arc-shaped portion 28A-2 enters and stabilizes the position of the rotational movement center X.

As shown in FIG. 2B, the second cam portion 56 formed in the second groove portion 53 corresponding to the second terminal 30 has the lower cam edge 56A of the large arc on the right side and the left side. In a substantially fan shape having an upper cam edge 56B of a small circular arc, the rotational movement center X is in a position coinciding with the first cam portion 55, and is in sliding contact with the cam abutting portion 38A. The center of curvature of the arc of said lower cam edge 56A which forms the range is comprised. With respect to the rotational movement center X, the cam abutting portion 38A of the cam support portion 38 is a straight edge portion 28A-1 of the cam abutting portion 28A of the cam support portion 28 of the first terminal 20. ), The cam radius of the lower cam edge 56A in contact with the cam abutting portion 38A is larger than the cam radius of the first cam portion 55, and the first cam portion 55 at any angular position. Has a constant cam radius difference for. The upper cam edge 56B of the second cam portion 56 is similar to the upper cam edge 55B of the first cam portion 55, and the second cam portion 56 has the center of rotational movement X in FIG. 3. When rotating to the closed position, the distance of the lower cam edge 56A is sufficient to elastically displace the hydraulic arm portion 34 of the upper arm portion of the second terminal 30 upwardly from the hydraulic concave portion 34A. Leave.

The 3rd cam part 57 formed in the 3rd groove part 54 corresponding to the metal fitting 40 is the 2nd cam part mentioned above located in the 2nd groove part 53, as shown to FIG. 2 (C). It is made substantially the same as 56, and forms substantially fan shape with the lower cam edge 57A of a large arc at the right side, and the upper cam edge 57B of the small arc at the left side, and the rotational movement center X is a 1st cam part. And the center of curvature of the arc of the lower cam edge 57A, which is at a position coinciding with the center of rotational movement of the second cam portion 56, and forms a sliding contact range in sliding contact with the cam abutting portion 48A. Is fulfilling. The cam abutment portion 48A of the cam support portion 48 is a cam abutment portion of the cam support portion 28 of the first terminal 20, similarly to the second cam portion 56. Since it is located below the straight edge part 28A-1 of 28A, the cam radius of the lower cam edge 57A which contact | connects the said cam contact part 48A is larger than the cam radius of the 1st cam part 55, It has a constant cam radius difference at any angular position. The upper cam edge 57B of the third cam portion 57 is similar to the upper cam edge 55B of the first cam portion 55, and the third cam portion 57 has a center of rotational movement X in FIG. 3. When rotating to the closed position, the hydraulic arm portion 44 of the upper arm portion of the bracket 40 is spaced apart from the lower cam edge 57A by a sufficient amount to elastically displace the hydraulic arm portion 44 upward from the hydraulic recess 44A. have.

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

First, the connector 1 is disposed at a predetermined position on the circuit board (not shown), and the solder fixing part 49 of the metal fitting is placed on the connecting portion 29 of the first terminal and the connecting portion 39 of the second terminal. Fix it together with soldering the corresponding part.

In this way, with respect to the connector 1 mounted on the circuit board, the movable member 3 is brought into the open position as shown in Fig. 2, and the receiving opening 16 of the housing 10 is opened toward the rear. The insertion of the balanced conductor F is made possible.

Next, the connecting portion of the balanced conductor F is inserted forward into the accommodation opening 16. The first terminal 20 is between the pressing protrusion 25A of the upper arm portion 21 and the contact portion 27A of the lower arm portion 22, and the second terminal 30 is the pressing protrusion of the upper arm portion 31 ( Since both of 35A) and 37A of contact parts of the lower arm part 32 are spaced a little wider than the thickness of the said connection part of the flat conductor F, the connection part of the said flat conductor F is inserted easily. However, with regard to the bracket 40, an interval between the engaging portion 45A of the upper arm portion 41 and the lower arm portion 42 of the bracket 40 is narrower than the thickness of the connection portion of the balanced conductor F. Since the balanced conductor F is raised at the front end of the balanced conductor F, the balanced member F is advanced to a predetermined position, and the latched portion 45A enters the cutout portion F3 of the notched shape of the balanced conductor F. The balanced conductor F is prevented from being pulled out.

Next, as shown in FIG. 3, the movable member 3 is rotated to the closed position. By this rotational movement, the first cam portion 55, the second cam portion 56 and the third cam portion 57 of the movable member 3 rotate around the rotational movement center X, and their lower cam edges ( The upper cam edge (55A; 56A; 57A) makes sliding contact with the corresponding first terminal 20, the second terminal 30, and the contact portions 28A; 38A; 48A of the metal fitting 40; 55B; 56B; 57A presses the corresponding 1st terminal 20, the 2nd terminal 30, and the hydraulic pressure recessed part 24A; 34A; 44A of the metal fitting 40 upwards. As a result, as for the 1st terminal 20, the 2nd terminal 30, and the metal fittings 40, the hydraulic arm parts 24; 34; 44 of the upper arm parts 21; 31; 41 are lifted, According to the principle of the lever, the flexible arm portions 25; 35 and 45 are bent downward, and the pressing projection portions 25A and 35A press the upper surface of the balanced conductor F downward, and the catching portion 45A is further displaced downward. To maintain its position. Therefore, the balanced conductor F has a predetermined contact pressure and is electrically connected by contacting the contact portions 27A and 37A of the first terminal 20 and the second terminal 30, and the engaging portion 45A of the metal fitting 40 is made. ) Is surely prevented from being pulled out of the to-be-engaged portion F3.

In the present invention, even when the first terminal 20 is mounted to the housing 10 from the front and the second terminal 30 is mounted to the rear in this way, the corresponding first cam portion 55 and the second cam portion 56 Since the lower cam edges 55A and 56A of () are set with a fixed radius difference, the first cam portion 55 and the second cam portion 56 are always the first terminal 20 and the second terminal 30. ), The manufacturing error and the assembly error by interposing the housing can be eliminated, and the deviation between the terminals of the displacement amounts of the upper arm portions 21 and 31 is extremely small, so that the terminal and the equilibrium are The contact pressure of the conductor is stabilized. Moreover, in this invention, since the contact part 28A with the 1st cam part 55 is located upward in the 1st terminal 20, and the cam radius of a 2nd cam part is set large in the 2nd terminal 30, The center of rotational movement of the cam can be located upward, and even if the length of the operation portion 51 of the movable member 3 is reduced, the amount of protrusion toward the outside of the housing of the operation portion is increased in the state where the movable member is in the open position. While ensuring the size of the movable member for good operability, the protrusion amount out of the housing in the front-rear direction of the connector in the closed position does not increase, and miniaturization in this closed position, that is, the state of use of the connector can be achieved.

In this embodiment, the 1st cam part 55 of the arc-shaped part 28A-2 of the contact part 28A of the 1st terminal 20 is in the open position state in FIG.2 (A). It is preferable that the upper part 55C which becomes an upper part from the position slightly lower than an upper end is cut | disconnected so that it may sink than the circle | round | yen on the lower cam edge 55A. By doing so, when the first cam portion 55 starts the rotational movement toward the closed position, the upper portion 55C is not caught by the upper edge portion 28A-3 of the arc-shaped portion 28A-2. It can move smoothly in the range of the arc-shaped part 28A-2.

In this invention, although the lower cam edge of the 1st cam part and the 2nd cam part is made circular arc shape, if the cam radius difference in arbitrary angles is constant, another curve may be sufficient. In addition, the lower cam edge may have an arc shape or other curve as an envelope as its entire range, and may be notched at a part of the range.

Moreover, in this invention, when responding to the case where the connection circuit part is formed in the upper surface of a balanced conductor, the 1st and 2nd terminal does not need to have a contact part in the lower arm part, but the press part of the upper arm part serves as a contact part. It is also possible to make contact with the connection circuit portion. Moreover, the terminal which has a contact part in a lower arm part, and the terminal which the press part of an upper arm part also serves as a contact part can be mixed, and it can also be set as what is called a top-down contact or a zigzag arrangement.

l: connector 3: movable member
10 housing 16 receiving opening
18A: Position regulating section 20: First terminal
21: upper arm part 22: lower arm part
23 connection part 28A contact part
30: second terminal 31: upper arm portion
32: lower arm part 33: connection part
38A: Abutting portion 55: First cam portion
55A: Lower Cam Edge 55B: Upper Cam Edge
56: 2nd cam part 56A: Lower cam edge
56B: upper cam edge F: balanced conductor

Claims (3)

A plurality of terminals formed by maintaining a flat plate surface of the metal plate, the upper arm portion and the lower arm portion extending in the front-rear direction connected by the connecting portion at the middle portion in the front-rear direction; and the terminal in a direction perpendicular to the plate surface of the terminal. A terminal groove for arranging and retaining the housing and a receiving opening for the balanced conductor for opening toward the rear, an open position for allowing the insertion of the balanced conductor into the receiving opening, and a closing of the balanced conductor after the insertion into the upper arm portion It has a movable member which can move between positions, A some terminal has two types of terminals of the 1st terminal mounted from the front side with respect to the said terminal groove, and the 2nd terminal mounted from the rear side, At least 2nd terminal An island-shaped position regulating portion is formed in the terminal groove to which is mounted, and a movable member is opened. When the balanced conductor is inserted into the receiving opening in the state of being in the state, and the movable member moves to the closed position, the cam portion formed on the movable member lifts all the upper arm portions of each of the first terminal and the second terminal upward. In the electrical connector for a flat conductor which lifts and presses a flat conductor downward by elastically displacing the rear part of the upper arm part downward,
The lower arm portion of the second terminal is positioned in front of the connecting portion corresponding to the position regulating portion, and the contact portion with the cam is located at the same position or lower than the lower edge of the position regulating portion in the up and down direction,
The lower arm portion of the first terminal portion is in contact with the cam portion formed in the front portion than the connecting portion in an upward direction than the abutment portion of the second terminal in the vertical direction, and the cam portion of the movable member is formed in the terminal arrangement direction. Each of the first cam portion and the second cam portion is positioned at a position corresponding to the first terminal and the second terminal, and the first cam portion and the second cam portion are rotated about the common axis, so that the upper and lower portions of the first terminal and the second terminal are respectively lowered. It has an upper cam edge and a lower cam edge which abut the front part of an arm part and a lower arm part, and each lower cam edge of the said 1st cam part and the 2nd cam part has a lower side at the time of rotational movement from the open position of a movable member to a closed position. The difference between cam radius lengths in arbitrary same angular position in the sliding contact range which slide-contacts an arm part is formed specially. Electrical connector for a flat conductor. The method of claim 1,
The movable member is an electrical connector for a balanced conductor, wherein lower cam edges of each of the first cam portion and the second cam portion are formed in an arc. The method according to claim 1 or 2,
The lower arm portion of the terminal has a concave curved portion along the lower cam edge in the sliding contact range of the first cam portion at the first terminal, and has a straight portion extending in the front-back direction at the second terminal. connector.

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