JP4995946B2 - 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.

  In the connector of this Patent Document 1, the housing has a hollow portion for insertion of the flat cable, as seen from the insertion direction of the flat cable. Is forming. Protrusions are provided at positions corresponding to both ends in the width direction of the flat cable on the bottom surface in the insertion direction of the hollow portion in the insertion direction. It is designed to be engaged with a notch on the side edge.

The hollow portion has an inclined surface in which the upper inner surface of the opening is raised at both ends in the width direction, and the inclination is reduced toward the inner portion. Further, the hollow portion has a large vertical dimension, that is, an interval in the thickness direction of the flat cable so as to facilitate the insertion of the flat cable. In particular, as described in Patent Document 1, the distance between the both ends in the width direction of the flat cable is further increased due to the inclination that allows the flat cable to be inserted in a curved state.

When inserting the flat cable, press the both sides of the front end of the flat cable with one hand and bend it so that the front end is concave upward. Then, it is inserted into the cavity. Since the inclination at both ends in the width direction of the upper inner surface is reduced toward the inner part, the flat cable is inserted while being pressed by the elastic force directed downward from the signal terminal, and the deflection becomes smaller as the insertion proceeds. As a result, the flat cable approaches to the protrusion from above at a position where the notch of the flat cable exceeds the protrusion. After insertion of the flat cable, the flat cable comes into contact with the signal terminal while receiving the elastic force from the signal terminal. The connector of Patent Document 1 does not particularly have a configuration for holding the flat cable by increasing the pressing force from above on the flat cable after the flat cable is inserted. Therefore, after the flat cable is inserted, only the elastic force from the signal terminal acts on the flat cable. The elastic force is approximately the same as the flat cable insertion process, that is, a size that allows the flat cable to be inserted.

Akira 61-109083

As described above, Patent Literature 1 does not particularly have a configuration for holding the flat cable by increasing the elastic force from the signal terminal after the flat cable is inserted.

In view of such circumstances, and an object of the present invention to provide a flat conductor electrical connector inadvertent force to the flat conductive member can not be pulled out easily even act.

An electrical connector for a flat conductor according to the present invention includes a housing in which a receiving portion for inserting a flat conductor facing forward is formed in a space between an upper wall and a lower wall, and the receiving portion. A terminal in which a contact portion is arranged at a position in contact with the flat conductor and a position corresponding to a locked portion formed on both ends of the flat conductor in the terminal arrangement direction and aligned with the terminal and facing upward. And a locking projection .

In such flat conductive electrical connector, in the present invention, a flat conductive part of the terminal from an open position to allow insertion of the flat conductor to the receiving portion of the housing is pressurized by the contact portion of the terminal having a pressure member which is movably supported to the closed position for pressurizing said locking projection is formed in the member having a fixed arm portion which is held in a fixed position in the housing, the locking projection above The contact portion that protrudes upward from the lower wall and projects downward and is formed on the terminal is located on the upper wall side, and the pressure member is moved to the closed position. The pressed portion of the flat conductor is locked with the locking protrusion in the flat conductor extraction direction to prevent the flat conductor from being pulled out.

  With respect to the connector of the present invention having such a configuration, the flat conductor having the locked portion is inserted into the receiving portion of the housing in a state where the pressure member is in the open position. In the initial stage of insertion, the locked portion of the flat conductor reaches the locking protrusion. When the insertion of the flat conductor further proceeds from this state, the locked portion of the flat conductor moves over the locking protrusion and moves forward to be brought to a predetermined insertion position. In such a predetermined insertion position, since the above-mentioned locked portion is no longer at the position of the locking projection, the flat conductor is brought to a position where the locked portion can be locked with the locking projection in the extraction direction. .

  Thereafter, the pressurizing member supported movably is moved to the closed position. By the movement of the pressure member to the closed position, the pressure member presses a part of the terminal and presses the flat conductor downward with respect to the contact portion of the terminal.

  When the pressurizing member is in the closed position, the flat conductor is pressed downward by the contact portion of the terminal as described above and is positioned below, and in the direction in which the flat conductor is pulled out, the flat conductor Since the locked portion is in a position to be locked with the locking projection of the fixed arm portion and cannot move upward, the position is maintained. Even if an inadvertent force is applied, the flat conductor is It will not be pulled out.

  In the present invention, the fixed arm portion can be held and fixed by a fixing groove formed on the upper surface of the lower wall of the housing, and the locking projection can protrude upward from the fixing groove.

  In the present invention, the housing is preferably formed with a flat conductor entry groove that supports the front end edge of the flat conductor inserted to a predetermined position.

  In the present invention, it is preferable that the locking protrusion has a leading edge that is vertical and a trailing edge that is tapered.

  In the present invention, the member having the fixed arm portion may be provided with a held portion held by the housing at the front portion thereof. Further, the member having the fixed arm portion may have a fixing portion in which a fixing groove that fits to the rear edge of the bottom wall of the housing is formed at the rear end portion.

  As described above, according to the present invention, after the flat conductor is inserted to the predetermined position, the locked portion of the flat conductor is locked with the locking protrusion by the action of the pressure member in the closed position. Therefore, the locking for preventing the slipping out is reliably performed.

1A is a perspective view showing a flat conductor electrical connector and a flat conductor connected thereto according to an embodiment of the present invention, and FIG. 1B is a partially enlarged view showing a sectional position of FIG. It is a top view. 2A is a cross-sectional view taken along line IIA in FIG. 1B, FIG. 2B is a cross-sectional view taken along line IIB, and FIG. 2C is a cross-sectional view taken along line IIC. . FIGS. 3A and 3B are cross-sectional views at a metal fitting position showing a process of inserting a flat conductor into the connector of FIG. 1A, FIG. 3A is before insertion, FIG. 3B is during insertion, and FIG. ) Indicates when the insertion is completed. FIGS. 4A and 4B are cross-sectional views at the terminal position when the flat conductor insertion of the connector of FIG. 1A is completed, FIG.

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

  The electrical connector for a flat conductor according to this embodiment shown in FIGS. 1A and 1B is arranged on a circuit board (not shown). FIG. It is the perspective view which looked at the flat conductor before appearance and the insertion from the upper part, and FIG. 1 (B) is a partially enlarged plan view showing where the cross-sectional view shown in FIG. 2 is cut in FIG.

  1A includes a housing 10, two types of terminals 20 and 30 alternately arranged and held by the housing 10, and a metal fitting 40 provided close to terminals at both ends of the terminals in the arrangement direction. The pressure member 50 is rotatably supported by the housing 10. The pressure member 50 can rotate between an open position and a closed position on the front end side of the housing 10, and is in the open position in FIG. Further, the housing 10 has an opening of the receiving portion on the rear end side, and the flat conductor P before insertion is located behind the housing 10.

  The flat conductor P is inserted and connected to the connector 1 in the direction of arrow A (forward) in FIG. The flat conductor P has a plurality of connection circuit portions (not shown) formed on the upper surface at regular intervals in the width direction perpendicular to the arrow A direction. The connection circuit portion may be formed not only on the upper surface but also on both upper and lower surfaces, or may be formed only on the lower surface.

  The flat conductor P has a slightly smaller width on the front end side, and is formed as a locked portion that protrudes laterally between the front end by forming a constricted portion P1 that opens to the side. An ear P2 is provided.

2 to 4 are cross-sectional views of the connector. 2A to 2C are cross-sections at three different positions IIA, IIB, and IIC in FIG. 1B, that is, terminal arrangement directions.
(A) is the IIA position of a kind of terminal 20 in the arrangement range, FIG. 2 (C) is the IIC position of the metal fitting 40, and FIG. 2 (B) is the cross section at the IIB position between the terminal 20 and the metal fitting 40. Indicates. 3A to 3C are cross-sectional views of the metal fitting 40 (terminals 20 and 30 are omitted), which are shown at each position of the flat conductor P to be inserted. FIG. FIG. 3 (B) shows a state during insertion, and FIG. 3 (C) shows a state where the insertion is completed. All of FIGS. 2A to 2C and FIGS. 3A to 3C show the pressure member 50 in the open position. FIG. 4 is a cross-sectional view at the position of the kind of terminal 20, and shows a state where the pressure member 50 is in the open position in FIG. 4A and in the closed position in FIG. 4B.

  A housing 10 made by molding an electrically insulating material has an upper wall 11 and a lower wall 12, both walls being in the width direction (left-right direction in FIG. 1 and with respect to the page in FIGS. (Right angle direction) It is connected by the side wall 13 at both ends, and is made as one member.

  A space between the upper wall 11 and the lower wall 12 forms a receiving portion 10A for receiving the flat conductor P from the rear, and this space can be seen in the front-rear direction (FIG. 2 (A), ( C), the upper wall 11 and the lower wall 12 are formed so as to penetrate the right side and the rear side to the left), and the terminals 20 and 30 and the metal fitting 40 are held on the opposing surfaces. The terminal grooves 14 and 15 and the metal grooves 16 and 17 are formed to extend in the front-rear direction at a predetermined interval in the width direction of the housing.

  In the present embodiment, the terminals 20 and 30 and the metal fitting 40 are made while maintaining the flat surface of the metal plate as it is, and therefore the terminal grooves 14 and 15 and the metal grooves 16 and 17 have the grooves described above. The groove width is almost equal to the thickness of the metal plate.

  As shown in FIG. 2A, the kind of terminal 20 has a horizontal H shape, and the upper arm portion 21 and the lower arm portion 22 are connected by a connecting portion 23 at an intermediate position in the longitudinal direction thereof. .

  The upper arm portion 21 has a contact arm portion 24 on the rear side of the connecting portion 23 and a protruding contact portion 24A on the lower edge thereof, and has a pressed arm portion 25 on the front side of the connecting portion 23 on the lower edge of the front end side. A slightly depressed portion 25A is formed. The upper arm portion 21 floats from the groove bottom of the terminal groove 14 with the upper edge facing rearward, and receives the upward force from the cam portion of the pressurizing member described later at the pressure-receiving portion 25A. The portion 25 is tilted and displaced so that the front end is lifted upward, and the contact arm portion 24 is tilted and displaced with the connecting portion 23 as a fulcrum of the lever so that the rear end faces downward. The pressure arm portion 25 of the upper arm portion is provided with a position restricting portion 25B that can project downward at an intermediate position in the longitudinal direction. When the pressure member described later is assembled from the front to the rear, It is prevented from moving backward from a predetermined position of the cam portion of the member.

  The lower arm portion 22 has a connecting arm portion 26 on the rear side of the connecting portion 23, a protruding contact pressure portion 26 </ b> A at the middle portion in the longitudinal direction, and a connecting portion 27 at the rear end portion. The connecting portion 27 is located outside or substantially the same as or slightly below the bottom surface of the housing. Further, the connecting portion 27 is formed with a fixing groove 27A opened to the right.

  The lower arm portion 22 forms a cam support portion 28 at the upper edge of the front portion of the connecting portion 23. The cam support portion 28 forms a portion that rotatably supports the cam portion of the pressure member.

  The terminal 20 formed in this way is inserted into the housing 10 from the rear to the front, and the upper arm portion 21 is inserted into the terminal groove 14 of the upper wall 11 and the lower arm portion 22 is inserted into the terminal groove 15 of the lower wall 12. And held by pressure input between the groove bottoms of the terminal groove 14 and the terminal groove 15. Further, a fixing groove 27A formed in the connection portion 27 of the lower arm portion 22 is fitted to the rear end edge of the lower wall 12, and the terminal is held here as well.

  The other types of terminals 30 are alternately arranged with the terminals 20 in the terminal arrangement range.

  In the terminal 30, the connecting portion 27 and the fixing groove 27 </ b> A are provided on the rear end side of the lower arm portion 22 of the terminal 20, whereas the connecting portion 37 and the fixing groove corresponding thereto are provided on the lower side. Except for being different from the terminal 20 in that it is provided on the front end side of the arm portion 32, it has the same form as the terminal 20. Therefore, the terminal 30 is stored and held from the front to the rear in a terminal groove (not shown) of the housing. Moreover, the said fixing groove fits in the front-end edge of the housing lower wall 12, and uses here also for holding | maintenance of a terminal.

  Metal fittings 40 are disposed in parallel with the terminals at both outer positions of the terminal arrangement range in which the two types of terminals 20 and 30 are alternately arranged. Similarly to the terminals 20 and 30, the metal fitting 40 is also made while maintaining the flat surface of the metal plate.

  In FIG. 2 (C), the metal fitting 40 includes a held portion 41 held by metal fitting grooves 16 and 17 respectively formed on the upper wall 11 and the lower wall 12 from the substantially central position in the front-rear direction, and the held portion. It has a fixed arm portion 42 that is located behind the portion 41 and is held by the metal fitting groove 17 of the lower wall 12. A locking projection 43B that protrudes upward is provided on the rear end side of the fixed arm portion 42, and a fixing portion 43 is provided below the fixing projection 43B. A fixing groove 43A that fits on the edge is formed. A support arm 44 extends forward from the upper front end of the held portion 41, and a space for accommodating the shaft portion of the pressure member 50 is formed between the support arm 44 and the lower wall 12. . The metal fitting 40 is inserted into the housing from the rear to the front, the held portion 41 is press-fitted and held in the metal fitting groove 16 of the upper wall 11 and the metal fitting groove 17 of the lower wall 12, and the fixed arm portion 42 is attached to the metal fitting 42. The locking projection 43B is received in the groove 17 and protrudes greatly upward from the metal groove 17. The locking projection 43B has a leading edge that is vertical and a trailing edge that is tapered. A fixing groove 43A formed in the fixing portion 43 below the locking projection 43B fits in the rear edge of the lower wall 12 and is used for fixing.

  As shown in FIG. 1A, the upper wall 11 of the housing 10 has a front end edge side cut out over the entire width direction so as to form a space for the pressure member 50, and on the rear end edge side. The notches 18 are formed on both ends in the width direction from the rear edge toward the front. As seen from above the housing, the notch 18 has a straight edge 18A extending straight forward in the width direction, that is, the side closer to the side wall 13, and an inner side in the width direction facing outward. Inclined edge 18B which inclines, and the front end is formed by front end edge 18C which extends in the width direction. The notch 18 is completely cut out in the thickness direction of the upper wall 11, and the range is set so as to include the position of the locking projection 43 B of the metal fitting 40 in the width direction and the front-rear direction. ing.

  The upper wall 11 is formed with a tapered surface 18D on the inner surface of the rear end as seen in FIG. 2B at the position of the inclined edge 18B in the width direction. Further, the upper wall 11 is formed with a flat conductor entry groove 19 extending forward from the position of the front end edge 18C of the notch 18, and the transition from the notch 18 to the flat conductor entry groove 19 is made. Even in this portion, a taper surface 19 </ b> C that faces downward is formed on the inner surface of the upper wall 11.

  The pressing member 50 is made of an electric insulating material similar to that of the housing, has a lever shape, and extends in the terminal arrangement direction. The pressure member 50 is rotatably supported between an open position where the flat conductor P can be inserted and a closed position where the contact portion 24A of the terminal 20 is pressed against the flat conductor. . FIG. 2 is shown with the pressure member in the open position.

  As shown in FIG. 2A, the pressure member 50 is located in a space largely cut off on the front end edge side of the upper wall 11 of the housing 10, and shaft portions (FIG. 2) formed at both ends in the width direction of the connector. And a cam portion 51 provided at a position corresponding to the terminal 20 is rotatably supported. In FIG. 2A, the cam portion 51 is a groove portion 52 formed at the lower end portion of the pressure member 50 and is provided in an island shape so as to connect the inner surfaces of the groove portion. The groove portions 52 form spaces through which the pressurized arm portion 25 of the upper arm portion 21 of the terminal 20 and the cam support portion 28 of the lower arm portion 22 can be passed through the upper and lower ends of the cam portion 51, respectively.

  The cam portion 51 has a horizontally long cross-sectional shape at the open position in FIG. 2A, and the height dimension is larger than the distance between the pressure-receiving portion 25A of the pressure-arm arm 25 and the cam support portion 28. Small and the lateral dimension is set larger than the distance.

  In the cam part 51, the left upper and lower corners are rounded in FIG. 2A, and the right upper and lower corners are square. The cam portion 51 is similarly formed at a position corresponding to the terminal 30.

  The pressing member 50 is formed with a groove 53 at a position corresponding to the metal fitting 40 outside the terminal of both side terminals in the width direction of the connector, and an island-like support 54 similar to the cam 51 is provided here. It has been. In FIG. 2A, the support portion 54 has a vertically long rectangle, and the vertical dimension is substantially equal to the distance between the lower edge of the support arm 44 of the metal fitting 40 and the upper surface of the lower wall 12 of the housing 10. The lateral dimension is smaller than this. The left upper and lower corners of the support portion 54 are rounded and the right upper and lower corners are square. The groove portion 53 allows the support arm 44 of the metal fitting to pass through along the upper edge of the support portion 55.

  In such a pressure member 50, the upper end side forms an operation portion 55 in FIG. 2A, and protrudes upward from the upper wall 11 of the housing 10.

  Such a connector of this embodiment is used in the following manner.

  (1) First, the connector 1 is attached to a circuit board (not shown), and the terminals 20 and 30 are connected to corresponding circuit portions of the circuit board. The terminals 20 and 30 have their connecting portions 27 and 37 electrically connected to the corresponding circuit portion by soldering. Further, the fixing portion of the metal fitting 40 is fixed by soldering to the corresponding portion of the circuit board.

  (2) The pressure member 50 is brought to an open position in which the operation portion 55 faces upward. In this state, the space between the upper arm portion 21 and the lower arm portion 22 of the terminal in the housing receiving portion 10A is in a free state. The flat conductor P can be easily received. Similarly, the terminal 30 is also in a free state, and can easily receive the flat conductor P.

  (3) Next, as seen in FIGS. 1 and 3A, the flat conductor P is advanced in the direction of arrow A and inserted into the receiving portion 10A from the front end portion. At the position of the terminals 20 and 30 in the width direction, the flat conductor P can be easily inserted between the upper arm portion and the lower arm portion of the terminal, but at the position of the metal fitting 40, the locking projection 43B of the metal fitting 40 is provided. Because of the large protrusion, at this position, as shown in FIG. 3B, the flat conductor P has an ear P2 as a locked portion on the locking projection 43B from the tapered rear edge of the locking projection 43B. Get on and bend upward. The ear portion P2 is sufficiently allowed to bend in the space of the notch portion 18 formed in the upper wall 11 of the housing 10, and thus the flat conductor P has the above-described locking projection in a state where the ear portion P2 is bent upward. When it is inserted forward while riding on 43B and the ear P2 gets over the locking projection 43B, the flat conductor is released from its bending and becomes flat as shown in FIG. The front edge of P enters the flat conductor entry groove 19 of the housing 10 and is supported here. Thus, even if the flat conductor P is pulled rearward, the rear edge of the ear portion P2, which is the locked portion, is locked to the front edge of the locking protrusion 43B, thereby preventing the flat conductor P from being pulled out.

  (4) When the insertion of the receiving portion 10A is started, the ear portion P2 is easily inserted by the tapered surface 18D of the receiving portion 10A. When the ear portion P2 passes through the notch portion 18, the ear portion P2 moves upward. The bent ear portion P2 slides in contact with the inclined edge 18B of the notch 18 on the upper surface of the ear portion P2, and slides on the tapered surface 19C on the lower surface of the upper wall 11, and advances while being guided. The front end portion of the flat conductor P is smoothly introduced into the flat conductor entry groove 19 while being guided so as to shift from the bent state to the flat state as it advances.

  (5) Thus, after the ear | edge part P2 will be in the state latched by the latching protrusion 43B, the pressurization member 50 of the open position in FIG. 4 (A) is rotated, and FIG. Bring to the closed position. The cam portion 51 of the pressing member 50 is in a vertically long state, and the pressed arm portion 25 is lifted upward by pressing the pressed portion 25A of the terminal 20 upward. As a result, the upper arm portion 21 of the terminal 20 is elastically displaced like a lever with the connecting portion 23 as a fulcrum, the contact arm portion 24 is tilted downward, and the flat conductor P is pressed downward by the contact portion 24A. Increase contact pressure. When the connection circuit portion is formed on the upper surface of the flat conductor P, the connection circuit portion contacts the contact portion 24A. However, when the connection circuit portion is provided on the lower surface, the lower arm portion 22 of the terminal 20 is provided. The contact pressure portion 26A functions as a contact portion. Of course, when the circuit connection portion is provided on the upper and lower surfaces, both the contact portion 24A and the pressure contact portion 26A can be contacted. Such a connection with the flat conductor by the pressure member 50 is similarly performed for the terminal 30.

  (6) In this embodiment, as described above, simply by inserting the flat conductor into the receiving portion, the ear portion as the locked portion comes into contact with the locking portion and automatically bends. When the vehicle passes over and gets over, the above-mentioned bending is automatically released and becomes flat, and even if an external force is applied to the rear, it is locked to the locking portion and is reliably prevented from being pulled out.

  (7) Thus, when the pressing member is in the closed position, the flat conductor is pressed downward by the contact portion of the terminal, so that the ear portion as the locked portion of the flat conductor is upward. Although it cannot move and is always in a position to be locked with the locking protrusion, when the flat conductor is withdrawn, the pressure member is in the open position and the contact portion is displaced upward. When the conductor is tilted so as to be pulled upward, the locked portion is easily detached from the locking projection, and is pulled out by pulling backward.

  The present invention is not limited to the illustrated embodiment, and various modifications can be made. For example, the locking protrusion can be provided on the lower wall of the housing without being provided on the metal fitting. This eliminates the need for metal fittings and reduces the number of parts. In that case, it is desirable that the locking projections have a size sufficient to obtain the same strength as that provided in the metal fitting.

  Moreover, it is preferable that the distance between the locking projection and the upper wall of the housing is smaller than the thickness of the contact portion of the flat conductor, that is, the ear portion. In this way, after the ear has passed over the locking projection, it does not come off the locking projection even if it swings up and down.

  Further, as shown by a two-dot chain line in FIG. 1, the notch 18 may have an inclined edge extending to the back and may have a substantially V shape. By doing so, the inclined edge reliably guides the ear portion of the flat conductor to the inner portion.

  In the present invention, the locked portion of the flat conductor is not limited to the ear portion of the shape shown in FIG. 1A, and can be locked to the locking protrusion when the flat conductor is pulled backward. For example, the shape is not limited. For example, even if the constricted portion P1 is not provided immediately behind the ear portion in FIG. 1A, the shape of the side edge on the rear side of the ear portion may be linear. Moreover, even if the ear portion does not protrude from the side edge at a right angle, the ear portion may protrude in an inclined manner.

1 Connector 24A Contact Part 10 Housing 30 Terminal 10A Receiving Part 40 Member (Fitting)
DESCRIPTION OF SYMBOLS 11 Upper wall 42 Fixed arm part 12 Lower wall 43B Locking protrusion 18 Notch part 50 Pressure member 19C Tapered part P Flat conductor 20 Terminal P2 Locked part (ear part)

Claims (6)

A housing in which a receiving part for inserting a flat conductor facing forward is formed in a space between the upper wall and the lower wall, and a contact part is located at a position where the receiving part comes into contact with the flat conductor. a terminal which is arranged, flat conductor electrical connector having a locking projection facing upward alongside to the terminal at a position corresponding to an engaged portion formed in the terminal arrangement direction both sides of the flat conductive member In
A pressure member supported so as to be movable to a closed position where a part of the terminal is pressed from the open position enabling the insertion of the flat conductor into the receiving portion of the housing and the flat conductor is pressed at the contact portion of the terminal Have
The locking protrusion is formed on a member having a fixed arm portion held at a fixed position by the housing , and the locking protrusion protrudes upward from the lower wall and is formed on the terminal. The downward projecting contact portion is located on the upper wall side,
By moving the pressure member to the closed position, the pressed portion of the flat conductor is locked with the locking protrusion in the flat conductor extraction direction to prevent the flat conductor from being pulled out. An electrical connector for a flat conductor.   2. The electric conductor for a flat conductor according to claim 1, wherein the fixed arm portion is held and fixed by a fixing groove formed on the upper surface of the lower wall of the housing, and the locking projection protrudes upward from the fixing groove. connector.   3. The flat conductor electrical connector according to claim 1, wherein the housing is formed with a flat conductor entry groove for supporting a front end edge of the flat conductor inserted to a predetermined position. The locking projection is flat conductive electrical connector according to any one of claims 1 to claim 3 and the front edge vertical standing to the rear edge is tapered. The flat conductor electric connector according to any one of claims 1 to 4 , wherein a member having a fixed arm portion is provided with a held portion held by a housing at a front portion thereof. Member having a fixed arm portion, any one of claims 1 to claim 5 and to have a fixing part circle fixing groove fitted to the rear edge of the bottom wall of the housing is formed in the rear end portion An electrical connector for a flat conductor as described in 1.

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