JP6448136B2 - Flat conductor electrical connector - Google Patents

Description

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

  A plurality of terminals including a contact portion for contact connection with a connection portion provided on the tip side in the longitudinal direction of a flat conductor such as an FPC, and a connection portion for connection to a circuit board; A housing that is arranged and held in the connector width direction, and the housing forms a receiving portion for receiving a connecting portion of a flat conductor toward the front at a rear portion of a peripheral wall formed by an upper wall, a lower wall, and both side walls. An electrical connector for a flat conductor in which a contact portion of the terminal that contacts the connecting portion is located in the receiving portion is widely used as a connector that is attached to a circuit board.

  Such an electrical connector for a flat conductor has a width direction perpendicular to the longitudinal direction of the flat conductor, and a large number of connecting portions are arranged at a fine pitch at the leading edge of the flat conductor, The contacts are connected in correspondence with the contact portions of the terminals arranged in the connector. Therefore, in order to ensure that each connection portion is brought into contact with the contact portion of the corresponding terminal, when the flat conductor is introduced into the receiving portion, the flat conductor must be accurately positioned in the width direction.

  In this type of connector and disclosed in Patent Document 1, a tapered surface portion is provided at an inlet portion of a fitting port for positioning and storing an FPC or the like as a flat conductor in the width direction, and the flat conductor is connected to the fitting port. Even if it is slightly shifted in the width direction at the start of introduction of the flat conductor, the end of the side edge of the flat conductor is guided along the tapered surface and guided to the normal width direction position, and enters the fitting port for fitting. The connection portion and the contact portion are correspondingly connected to each other at a normal position in the mouth.

JP 2004-178958 A

  In Patent Document 1, the terminal has two types of terminals attached to the housing from the front and rear directions alternately in the arrangement direction, and is formed on the rear end side of the terminal attached from the front. A connecting portion for solder connection to the board extends in the front-rear direction to the rear end position of the fitting port, that is, the inlet end position. In the connection part, not only the rear end edge but also the upper edge protrudes from the housing part, and the flat type conductor is directed to either the horizontal direction or the inclined direction with the flat type conductor facing the fitting port. There is a high possibility that the tip of the conductor abuts on this connecting portion.

  Since the base material of the flat conductor is made of resin and the terminal is made of metal, the flat conductor is easily damaged when the flat conductor abuts against the terminal connection. The flat conductor is made of resin, but there is a metal connection part as a circuit line at the tip. If it is damaged, the front end of the flat conductor is scraped to produce resin powder and metal powder. It could cause poor contact or short circuit.

  In view of such circumstances, the present invention provides an electrical connector for a flat conductor that can guide a flat conductor to a predetermined introduction position without damaging the flat conductor due to contact with a terminal at the start of introduction of the flat conductor. Let it be an issue.

  An electrical connector for a flat conductor according to the present invention includes a contact portion for contact connection with a connection portion provided on the distal end side in the longitudinal direction of the flat conductor and a connection portion for connection to a circuit board. A plurality of terminals, and a housing for arranging and holding the terminals in the connector width direction, the housing being a flat conductor facing forward at the rear part of the peripheral wall formed by the upper wall, the lower wall, and both side walls. And a contact portion of the terminal that contacts the connecting portion is located in the receiving portion.

  In such an electrical connector for a flat conductor, in the present invention, the introduction wall portion has a rear end of the upper wall at least in the width direction range of the flat conductor, and is positioned forward of the rear end of the lower wall, The upper surface has an exposed surface that is exposed upward and behind the rear end of the upper wall, and the exposed surface is positioned above the upper edge of the connecting portion outside the arrangement region of the connecting portions in the connector width direction. In the process of introducing the flat conductor toward the receiving portion, the leading edge of the flat conductor can be brought into contact with the exposed surface.

  According to the present invention having such a configuration, the rear end of the upper wall forming the introduction wall portion is located in front of the rear end of the lower wall and forms an exposed surface on the lower wall. It is opened upward on the rear end side, so that oblique introduction from above is easy and the position of the flat conductor at the time of visual introduction can be confirmed.

  Further, when the introduction of the flat conductor is started, especially when the introduction is performed obliquely, the exposed surface is located above the connection portion even if the terminal connection portion is arranged on the receiving portion side. The leading edge of the is reliably guided on the exposed surface without abutting against the connecting portion. Furthermore, after the connector is mounted on the circuit board, it can be easily visually confirmed from above in the solder connection state with the circuit board at the connection portion.

In the present invention, at least some of the terminals of the plurality of terminals can be positioned within the range of the introduction wall portion in the front-rear direction.
In the present invention, the introduction wall portion is at least at both ends in the connector width direction, and the tapered surface that introduces and guides the flat conductor to the inside of the receiving portion toward the lower surface of the rear edge of the upper wall serves as the introduction upper guide surface. It is preferable to be provided.

  By doing so, when the flat conductor is introduced obliquely, the flat conductor can be smoothly introduced to the receiving portion by the introduction upper guide surface of the upper wall.

  In the present invention, it is preferable that the introduction wall portion is provided with a tapered surface as an introduction side portion guide surface on the inner surface of the rear edge of the side wall to introduce and guide the side edge of the flat conductor inward in the connector width direction. .

  In this way, when the connecting portion of the flat conductor is introduced into the receiving portion, the flat conductor is guided in the connector width direction by the introduction side portion guide surface, and the connecting portion is brought to the normal position in the same direction.

  In the present invention, the introduction wall portion has an immersion portion in which the rear end of the lower wall is immersed forward in the connector width direction in the arrangement region of the terminal connection portion, and the connection portion is exposed backward in the immersion portion. Thus, the solder connection is facilitated by exposing the terminal connection portion.

  In the present invention, as described above, since the rear end of the upper wall in the introduction wall portion of the housing is positioned and opened in front of the rear end of the lower wall, the introduction of the flat conductor, particularly the oblique introduction, is performed. In this case, the introduction position and posture can be determined while facilitating the introduction operation and visually confirming, and in addition, the exposed surface is outside the terminal arrangement area and is located above the upper edge of the terminal connection portion. As a result, the leading edge of the flat conductor comes into contact with the exposed portion of the lower wall and is guided to be introduced, and the leading edge of the flat conductor is introduced into the receiving portion of the connecting portion of the flat conductor. It does not come into contact with the terminal and is not damaged, thereby preventing contact failure due to resin powder generated due to scraping at the front end of a damaged flat conductor and short circuit due to metal powder.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the electrical connector for flat conductors of one Embodiment of this invention, and the flat conductor connected to this, (A) shows before connection of a flat conductor, (B) shows after connection. FIG. 2A shows a vicinity of a receiving portion entrance as a main portion of the connector of FIG. 1, (A) is a perspective view, and (B) is a cross-sectional view taken along the line IIB-IIB in FIG. It is sectional drawing in the position of the 1st terminal about the connector of FIG. 1, a movable member exists in an open position, and the state which has introduce | transduced the flat type conductor in order of (A), (B), (C) Indicates. FIG. 1 is a cross-sectional view of the connector with the movable member in the closed position, (A) is the first terminal, (B) is the second terminal, and (C) is a cross-sectional view at the position of the fixture. It is a top view of the connector which shows the incomplete introduction | transduction state of the flat conductor to a connector, Comprising: (A) is the case of the flat conductor shown in FIG. 1, (B) is the case of the flat conductor of another form It is. FIG. 3 is a view showing the vicinity of a receiving portion entrance as a main part of another form of the connector of FIG. 1, viewed from the same direction as in FIG. 2, wherein (A) is a perspective view and (B) is a front view.

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

  FIG. 1 is a perspective view showing a flat conductor electrical connector (hereinafter referred to as a connector) 1 of this embodiment and a flat conductor F connected thereto, and FIG. 1 (A) is a state before connecting the flat conductor to the connector 1. , (B) shows after connection.

  The flat conductor F has a connection portion F1 introduced into the connector 1 and connected to the connector terminal on the upper surface of the front end portion of the flat conductor F. In the present embodiment, circuit lines F2 extending in the longitudinal direction of the flat conductor (in the drawing, only the front end portion where the connection portion F1 is formed are shown and the rear portion is not shown) are arranged by the number of the terminals. The circuit line F2 is a circuit line having a circuit line F2A having a pad F2A-1 and a terminal F2B-1 behind the pad F2A-1 in proximity to the front end edge of the flat conductor F. Line F2B, and both circuit lines F2A and F2B are alternately arranged.

  The flat conductor F is formed with a locking recess F3 for locking the fixing bracket of the connector at the side edge of the connecting portion F1, and at the edge of the locking recess F3 of the fixing bracket. A reinforcing pad F4 is provided for improving the strength when the claw portion is slidably contacted and locked.

  The connector 1 to which the flat conductor F is connected includes a connector main body 2 that holds the terminals 10 and the fixing bracket 20 with a housing 30 made of an electric insulating material, and an electric insulation that is movably supported on the front edge side of the connector main body 2. And a movable member 3 made of a material.

  The terminal 10 held by the housing 30 is of two types: a first terminal 11 incorporated in the housing 30 from the rear to the front, and a second terminal 16 incorporated from the front to the rear. The two are arranged alternately in the connector width direction (left-right direction in FIG. 1).

  Each of the first terminal 11 and the second terminal 16 is made by punching while maintaining a flat surface of the metal plate, has a substantially horizontal H shape, and the first terminal 11 is shown in FIGS. (C) and as shown in FIG. 4 (A), it has an upper arm portion 12, a lower arm portion 13, and a connecting portion 14 that connects the two at their longitudinal center positions. As shown in FIG. 4B, it has an upper arm portion 17, a lower arm portion 18, and a connecting portion 19.

  The upper arm portion 12 of the first terminal 11 extends forward from the position of the contact arm portion 12A and the connecting portion 14 extending from the position of the connecting portion 14 to the vicinity of the rear end of the housing 30 (left end in FIG. 3A). And a flexible arm portion 12 </ b> B extending to an intermediate position between the connection portion 14 and the front end of the housing 30. A contact portion 12A-1 is formed at the rear end of the contact arm portion 12A so as to form a downward triangular protrusion and contact the pad F2B-1 of the circuit line F2B of the flat conductor F. The front end of the flexible arm portion 12B On the lower edge, a concavely curved pressure receiving portion 12B-1 that is engaged with a cam portion of a movable member described later is formed.

  The lower arm portion 13 of the first terminal 11 has a connecting arm portion 13A extending from the position of the connecting portion 14 toward the rear and a position protruding rearward from the housing 30, and the upper arm portion 12 from the position of the connecting portion 14 to the front. And a cam support arm portion 13B extending to a position slightly ahead of the front end of the flexible arm portion 12B. The connection arm portion 13A includes a connection portion 13A-1 located outside the housing 30 at a rear end portion thereof, and a projecting support protrusion portion 13A-2 at a position facing the contact portion 12A-1 of the upper arm portion 12. Have. The lower edge of the connecting portion 13A-1 is substantially at the same level as the bottom surface of the housing 30, and when the connector 1 is disposed on the circuit board, it comes into contact with the corresponding circuit on the circuit board. ing. The connecting portion 13A-1 is solder-connected to the corresponding circuit portion. The support protrusion 13A-2 supports the lower surface of the flat conductor F. When the flat conductor F also has a circuit line portion on the lower surface, the auxiliary protrusion 13A-2 contacts the corresponding pad of the circuit line portion. It can function as a contact portion.

  The cam support arm portion 13B of the lower arm portion 13 has a straight upper edge at its front portion, and rotatably supports a first terminal cam portion provided on the movable member 3 described later. The cam support arm portion 13B has a locking protrusion 13B-3 that bites into the housing 30 to lock the first terminal 11 at the upper edge near the connecting portion 14 in order to prevent the first terminal 11 from coming off. Yes.

  As described above, the second terminal 16 maintains the flat surface of the metal plate in the same manner as the first terminal 11, and as shown in FIG. 4B, the upper arm portion 17 and the lower arm portion 18. And although it has the connection part 19 and has comprised the substantially horizontal H shape, the difference with the 1st terminal 11 is the lower arm part 18 on the relationship in which the 2nd terminal 16 is integrated in the housing 30 from the front to back. The connecting portion 18B-1 provided at the tip of the cam support arm portion 18B is positioned at the front portion of the housing 30, and the pressure receiving portion 17B-1 formed on the flexible arm portion 17B of the upper arm portion 17 is deep. The contact arm portion 17A of the upper arm portion 17 having the contact portion 17A-1 and the connecting arm portion 18A of the lower arm portion 18 having the support protrusion 18A-2 are in contact with the first terminal 11. It is shorter than the arm 12A and the connecting arm 13A. Is the locking projection 18A-3 that bite 30, on the relationship between the second terminal 16 is incorporated into the housing 30 toward the rear to the front, it is that they are located behind the connecting portion 19.

  Furthermore, the fixing bracket 20 is held by the housing 30 on both outer sides of the arrangement range of the first terminals 11 and the second terminals 16 that are alternately arranged. As shown in FIG. 4C, the fixing bracket 20 has a substantially horizontal H shape while maintaining the flat surface of the metal plate in the same manner as the first terminal 11 and the second terminal 16, and the engagement of the upper arm portion 21. The stop arm portion 21A is longer than the contact arm portion 17A of the upper arm portion 17 of the second terminal 16, and the protruding locking portion 21A-1 provided at the rear end of the locking arm portion 21A is the second terminal 16. It has a claw shape larger than the contact portion 17A-1, and the support arm portion 22A of the lower arm portion 22 is substantially the same length as the locking arm portion 21A and longer than the connection arm portion 18A of the second terminal 16. The support arm 22A is different from the second terminal 16 in that it does not have a protrusion at the rear end, but the other is the same as the second terminal 16, and the second terminal 16 has a sign “4”. The description is abbreviate | omitted by attaching | subjecting the added code | symbol.

  Such a housing 30 holding the first terminal 11, the second terminal 16, and the fixing bracket 20 can be understood from FIGS. 1, 3, and 4 as well. A first terminal accommodating groove 31, a second terminal accommodating groove 32, and a fixing metal accommodating groove 33 for inserting and assembling the metal fitting 20 are formed so as to penetrate in the front-rear direction.

  The housing 30 forms a peripheral wall with an upper wall 35, a lower wall 36, and a side wall 37, and an intermediate portion in which the connecting portion 14 of the first terminal 11, the connecting portion 19 of the second terminal 16, and the connecting portion 23 of the fixing bracket are located. The first terminal receiving groove 31, the second terminal receiving groove 32, and the fixing bracket receiving groove 33 are communicated with each other in the terminal arrangement direction (the direction perpendicular to the paper surface in FIGS. 3 and 4) behind the position. A space opened rearward so as to receive the connecting portion F1 of the flat conductor F from the rear is formed as the receiving portion 38. More specifically, a receiving portion 38 is formed inside the rear portion of the peripheral wall formed by the upper wall 35, the lower wall 36, and the side wall 37 of the housing 30 (the rear portion from the position of the connecting portions 14, 19, 23). A wall surrounding the receiving portion 38 forms an introduction wall portion 39.

  As shown in FIGS. 3A to 3C and FIG. 4A, the housing 30 has a first terminal in the first terminal receiving groove 31 at a position ahead of the connecting portion 14 of the first terminal 11. 4B and FIG. 4C are formed in the second terminal receiving groove 32 and the fixing bracket receiving groove 33. As described above, the engaging wall 41 and the engaging protrusion 22A-3 that the engaging protrusion 18A-3 bites at the rear positions of the connecting portion 19 of the second terminal 16 and the connecting portion 23 of the fixing bracket 20 are engaged. A stop wall 42 is provided to prevent the first terminal 11, the second terminal 16, and the fixture 20 from coming off.

  Among the upper wall 35 and the lower wall 36 that are positioned in a pair so as to form the introduction wall portion 39, the upper wall 35 has a rear end positioned forward of a rear end of the lower wall 36, In other words, the rear end of the lower wall 36 projects rearward from the rear end of the upper wall 35, and the exposed surface 43 opened upward is formed on the upper surface of the rearward projecting portion of the lower wall 36. Yes. In this embodiment, the rear end of the lower wall 36 sunk forward to the position of the rear end of the upper wall 35 in the terminal arrangement range in the connector width direction, and the exposed surface 43 is on both sides of the terminal arrangement range. Is formed. That is, the lower wall 36 has an immersion portion 44 in the terminal arrangement range. As a result, the connection portion 13A-1 of the first terminal 11 extending to the rear end of the housing 30 of the lower wall 36 is located and exposed in the immersion portion 44. Since the connection portion 13A-1 is exposed, it is possible to confirm when the first terminal 11 is press-fitted into the housing, to confirm the solder at the time of solder connection at the connection portion 13A-1, and to transmit through the housing surface during soldering. Flux up can be prevented. Thus, since the said immersion part 44 is formed in the lower wall 36, the exposed surface 43 is the position of the both sides of the connector width direction with respect to the said immersion part 44, as seen in FIG. In other words, it is located on both outer sides of the arrangement range of the connection portion 13A-1 of the first terminal 11. In the present embodiment, the exposed surface 43 is divided into two regions across the fixing bracket receiving groove 33 for the fixing bracket 20, and is positioned outward of the fixing bracket receiving groove 33 in the connector width direction. The outer exposure surface 43 </ b> A and the inner exposure surface 43 </ b> B located inward of the fixing bracket receiving groove 33 are provided. The outer exposed surface 43A is located slightly higher than the inner exposed surface 43B. As can be understood from FIG. 2B, although there is a slight level difference between the outer exposed surface 43A and the inner exposed surface 43B, both are within the range of the exposed surface 43 in the front-rear direction. It is located above the upper edge of the connecting portion 13A-1 of the first terminal 11 located in the immersion portion 44, and the outer exposed surface 43A is higher by δ1 than the upper edge of the connecting portion 13A-1. The inner exposed surface 43B is higher by δ2 (<δ1).

  The outer exposed surface 43A guides the flat conductor F by the front edge of the flat conductor F coming into contact with the flat conductor F when the flat conductor F is introduced into the receiving portion 38, particularly when obliquely introduced. The front end is prevented from abutting and colliding with the upper edge of the connection portion 13A-1 of the first terminal 11.

  The inner exposure surface 43B, which is slightly lower than the outer exposure surface 43A, has the contact portion 12A-1 and the first terminal 11 of the first terminal 11 when the movable member 3 is rotated to the closed position after the flat conductor F is introduced. When pressed downward by the contact portion 17A-1 of the two terminals 16, it has a function of allowing the flat conductor F to bend and supporting the lower surface of the flat conductor F.

  Since the exposed surface 43 overlaps with the connecting portion 13A-1 in the front-rear direction, the exposed surface 43 can be provided without increasing the size of the connector in the front-rear direction.

  As described above, the upper wall 35 facing the lower wall 36 has a rear end positioned forward of the rear end of the lower wall 36, as shown in FIGS. 2 (A) and 2 (B). The lower surface of the rear edge of the upper wall 35 is formed with a tapered upper guide surface 45 for guiding the flat conductor F to the receiving portion 38 so that it can be easily introduced. The introduction upper guide surface 45 is interrupted and does not exist at the positions of the first terminal receiving groove 31 and the second terminal receiving groove 32, but the entire width region of the receiving portion 38, that is, the side wall 37 on both sides. It is formed across.

  The side wall 37 has an introduction side guide surface 46 for guiding the flat conductor F inward in the connector width direction to the normal position on the inner side surface in the connector width direction in the rearward range from the rear end of the upper wall 35. Is formed. As shown in FIGS. 2 (A) and 2 (B), the introduction side portion guide surface 46 includes an introduction side portion side guide surface 46A adjacent to the outer edge of the outer exposure surface 43A, and the introduction side portion side guide. And an introduction side vertical guide surface 46B that hangs from the front edge of the surface 46A. That is, the introduction side lateral guide surface 46A extends from the rear end position of the lower wall 36 to the rear end position of the upper wall 35, and the introduction side vertical guide surface 46B is formed at the rear end of the upper wall 35. ing. Therefore, when the flat conductor F is introduced shifted in the width direction, it is guided toward the normal position by the introduction side lateral guide surface 46A and then guided by the introduction side vertical guide surface 46B. .

  Thus, the housing 30 forming the introduction wall portion 39 at the rear portion supports the movable member 3 at the front portion and allows rotation of the movable member 3 as seen in FIGS. 1, 3, and 4. A notch 47 is opened to the front and upward, and is formed over the terminal arrangement range. The upper wall 35 has a flexible arm 12B of the first terminal 11 from the width direction edge 47A of the notch 47, and Groove notches 48A and 48B for accommodating the flexible arm portion 17B of the second terminal 16 are formed extending rearward, respectively, and a groove notch 48C for accommodating the upper arm portion 21 of the fixing bracket 20 is formed in the groove notch 48A. , 48B and extending rearward.

  The connector main body 2 configured in this manner is attached with the movable member 3 having one end located in the notch 47 of the housing 30 and capable of rotating about the one end.

  The movable member 3 is made of an electrical insulating material, and has a vertical position as shown in FIGS. 1 (A) and 1 (B) and FIGS. 3 (A) to 3 (C) and FIG. 4 (A). ) To (C) and is supported by the housing so as to be rotatable between a closed position in a lateral direction.

  The movable member 3 has a plate shape having a width extending over the entire area of the cutout portion 47 in the connector width direction, and a cross section at a position corresponding to the first terminal 11, the second terminal 16, and the fixing bracket 20. As shown in FIGS. 3 (A) to 3 (C) and FIGS. 4 (A), 4 (B), and 4 (C), the first terminal 11 is disposed on one end side where the rotation center is located. Groove portions 51, 52, and 53 are formed to house the front portion of the flexible arm portion 12B, the front portion of the flexible arm portion 17B of the second terminal 16, and the front portion of the flexible arm portion 21B of the fixing bracket 20, respectively. Yes. In these groove parts 51, 52, 53, the first terminal cam part 54 engaged with the pressure receiving part 12 B- 1 formed on the flexible arm part 12 B of the first terminal 11, and the second terminal 16 are provided. The second terminal cam portion 55 engaged with the pressure receiving portion 17B-1 formed on the flexible arm portion 17B, and the fixing engaged with the pressure receiving portion 21B-1 formed on the flexible arm portion 21B of the fixing bracket 20. A bracket cam portion 56 is provided.

  The first terminal cam portion 54 and the second terminal cam portion 55 are each formed in a vertically long shape when the movable member 3 is in the closed position as seen in FIGS. 4 (A) and 4 (B). Yes. The first terminal cam portion 54 and the second terminal cam portion 55 are located above the cam support arm portion 13B of the first terminal 11 and the cam support arm portion 18B of the second terminal 16 when the movable member 3 is rotated. When the movable member 3 comes to the closed position while being pivotally supported by the edge, the upper edge of the first terminal cam portion 54 presses the pressure receiving portion 12B-1 of the first terminal 11 upward, and the second terminal cam The upper edge of the portion 55 presses the pressure receiving portion 17B-1 of the second terminal 16 upward. When the pressure receiving portions 12B-1 and 17B-1 are pressed, the flexible arm portion 12B of the first terminal 11 and the flexible arm portion 17B of the second terminal 16 bend upward, respectively, and the first terminal is based on the principle of leverage. 11 contact arm portions 12A and second terminal 16 contact arm portions 17A are bent downward. As a result, the contact portion 12A-1 of the first terminal 11 and the contact portion 17A-1 of the second terminal 16 are brought into contact with the corresponding pads F2B-1 and F2A-1 of the circuit board F.

  As shown in FIG. 4C, the fixing bracket cam portion 56 has a circular shape and is not supported by the connection arm portion 22B that forms the front portion of the lower arm portion 22 of the fixing bracket 20, When the movable member 3 comes to the closed position, the fixing bracket cam portion 56 moves upward to press the pressure receiving portion 21B-1 of the fixing bracket 20 upward. When the pressure receiving portion 21B-1 is pressed upward, the claw-like locking portion 21A-1 provided at the rear end is bent downward and displaced by the same principle as the first terminal 11 and the second terminal 16. The flat conductor F enters the locking recess F3, and the locking portion 21A-1 prevents the flat conductor F from coming off.

  Next, the connection procedure of the flat conductor F to the connector of this embodiment having such a configuration will be described.

  Prior to connecting the flat conductor F to the connector, the movable member 3 of the connector is raised to the open position as seen in FIG. 1 (A) and FIGS. 3 (A)-(C). Since the first terminal 11, the second terminal 16, and the fixing bracket 20 are not receiving any force from the first terminal cam portion 54, the second terminal cam portion 55, or the fixing bracket cam portion 56 of the movable member 3, The contact arm portion 12A of the first terminal 11, the contact arm portion 17A of the second terminal 16, and the locking arm portion 21A of the fixing bracket 20 are not deflected downward and are in a free state, and the flat conductor F is It can be easily introduced into the receiving unit 38.

  The flat conductor F has no problem when the introduction position to the connector (vertical and lateral positions) is a normal position and the introduction direction is performed in a horizontal direction parallel to the circuit board. The connecting portion F1 of F is introduced into the receiving portion 38.

  In many cases, the flat conductor F is shifted from the normal position or introduced obliquely. In such a case, the introduction cannot be performed smoothly, or the leading edge of the flat conductor collides with the terminal and is damaged. However, the connector of this embodiment deals with this.

  As seen in FIGS. 3A to 3C, when the flat conductor F is introduced obliquely, in this embodiment, the exposure of the lower wall 36 positioned corresponding to both ends in the width direction of the flat conductor is exposed. Since the surface 43 (outside exposure surface 43A) is located above the upper edge of the connection portion 13A-1 of the first terminal 11, the front end edge of the flat conductor F is the connection portion 13A of the first terminal 11. -1 abuts on the exposed surface 43 without colliding with or abutting on the upper edge, and is guided forward toward the receiving portion 38. Therefore, the flat conductor F is smoothly introduced into the receiving portion 38 while sliding on the exposed surface 43 without being damaged by the first terminal 11 whose front end edge is made of metal.

  Next, when the flat conductor F is introduced in parallel or obliquely with respect to the circuit board, the introduction position may be shifted vertically or in the connector width direction. In this case, the front end edge or front end portion of the flat conductor F abuts on the introduction upper guide surface 45 and is guided downward toward the receiving portion 38, and the introduction side portion guide surface 46, that is, the introduction side portion vertical guide surface 46A. And it is guided toward the normal position in the connector width direction by the introduction side portion lateral guide surface 46B.

  Thus, the connecting portion F1 of the flat conductor F is introduced to the normal position in the receiving portion 38 and to the normal introduction depth position (see FIG. 1B).

  Next, the movable member 3 is rotated from the open position in FIG. 1 (B) to the closed position seen in FIGS. 4 (A) to 4 (C). When the movable member 3 is brought to the closed position, as described above, the first terminal 11 and the second terminal 16 correspond to the first terminal cam portion 54, the second terminal 16 and the first terminal cam portion 54B. As a result of pressing upward by the two-terminal cam portion 55 and bending the flexible arm portions 12B and 17B upward, the contact arm portions 12A and 17A bend downward, and the contact portions 12A-1 and 17A-1 correspond to the corresponding pads F2B. -1 and F2A-1, and the flat conductor F is pressed downward to increase the contact pressure. On the other hand, in the fixing bracket 20, the pressure receiving portion 21B-1 is pressed upward by the fixing bracket cam portion 56, and the claw-shaped locking portion 21A- is operated on the same principle as the first terminal 11 and the second terminal 16. 1 moves downward and enters into the locking recess F3 of the flat conductor F, and the flat conductor F is reliably prevented from coming off.

  In the present embodiment, as described above, the flat conductor F is provided with the reinforcing pad F4 at the connection portion F1. As shown in FIG. 1A, the rear edge of the reinforcing pad F4 is located immediately behind the locking recess F3 of the flat conductor F, and in the front-rear direction, of the two types of pads F2A and F2B. As shown in FIG. 1B, when the connection portion F1 of the flat conductor F is introduced into the receiving portion 38 to the normal position, the pad F2B-1 is located at the rear end of the pad F2B-1. The rear edge of the reinforcing pad F4 is located at the same position as the rear end of the upper wall 35 of the housing 30. That is, when the flat conductor F is completely introduced to the normal position, the reinforcing pad F4 is covered with the upper wall 35 and cannot be seen. The reinforcing pad F4 is made of metal and is glossy like the pad of the circuit line F2, and is easily visible since it shines in the introduction process until the flat conductor F reaches the normal position. Thereafter, when the flat conductor F reaches the normal position, the shining reinforcing pad F4 is covered with the upper wall 35 and suddenly disappears, so it can be confirmed very easily that the flat conductor F has been introduced to the normal position.

  Next, when the flat conductor F is at the incomplete introduction position, as shown in FIG. 5 (A), the points are distributed over the reinforcing pad F4 (in FIG. 5 (A), the points are distributed in the reinforcing pad area for easy understanding). The rear portion protrudes from the rear edge of the upper wall 35, and incomplete introduction can be found by visual observation. This is possible because the rear end of the upper wall 35 is submerged in front of the rear end of the lower wall 36.

  Next, as shown in FIGS. 1A and 5A, the reinforcing pad F4 is covered with the upper wall 35 when the flat conductor F is completely introduced to the normal position, and when it is incompletely introduced. Even if it does not protrude to the outside and can be seen from the outside, as another pattern format, as shown in FIG. When the visual confirmation part F4-1 of the reinforcing pad F4 is formed and incompletely introduced, the front edge of the visual confirmation part F4-1 does not reach the rear end of the upper wall 35. The introduction can be confirmed visually.

  Next, another embodiment of the guide surface of the flat conductor formed on the introduction wall portion 39 will be described.

  2 (A) and 2 (B), the introduction side portion guide surface 46 is provided with the introduction side portion vertical guide surface 46B at the front end position of the introduction side portion lateral guide surface 46A. In the examples of A) and (B), the lower wall 36 is vertically suspended from the lateral side guide surface 46A of the laterally tapered surface inclined downward from the upper surface of the lower wall 36 toward the inner side in the connector width direction and the exposed surface 43. And an introduction side vertical guide surface 46B of a vertical taper surface inclined forward from the rear end surface toward the inner side in the connector width direction. The introduction side lateral guide surface 46A and the introduction side vertical guide surface 46B form a convex corner at a position near the rear end of the lower wall 36 on the entrance side, and share a ridge line 46C intersecting each other. Therefore, when the flat conductor F is introduced while being shifted in the width direction, it is guided toward the normal position by the introduction side portion vertical guide surface 46A or the introduction side portion lateral guide surface 46B.

11 (first) terminal 36 lower wall 12A-1 contact part 37 side wall 13A-1 connection part 38 receiving part 16 (second) terminal 39 introduction wall part 17A-1 contact part 44 immersion part 30 housing 45 introduction upper guide surface 35 Upper wall 46 Introduction side guide surface

Claims (5)

A plurality of terminals having a contact portion for contact connection with a connection portion provided on the front end side in the longitudinal direction of the flat conductor and a connection portion for connection to a circuit board, and the terminals in the connector width direction And an introduction wall forming a receiving portion for receiving a connecting portion of the flat conductor toward the front at a rear portion of the peripheral wall formed by the upper wall, the lower wall, and both side walls. In the flat conductor electrical connector, the contact portion of the terminal that contacts the connection portion is located in the receiving portion.
The introduction wall portion has a rear end of the upper wall at least in the width direction range of the flat conductor, and is positioned in front of the rear end of the lower wall, and an upper surface of the lower wall is above and behind the rear end of the upper wall. An exposed surface is provided, the exposed surface is located above the upper edge of the connecting portion outside the arrangement region of the connecting portions in the connector width direction, and the flat conductor is introduced toward the receiving portion. In the process, the leading edge of the flat conductor can come into contact with the exposed surface, and the flat conductor is connected to the inner surface of the side wall of the introduction wall portion at the rear end position of the upper wall in the front-rear direction. A flat conductor electric device characterized in that an upright introduction side vertical guide surface is provided to guide to a normal position in a direction, and the exposed surface is located behind the introduction side vertical guide surface connector.   The electrical connector for a flat conductor according to claim 1, wherein at least some of the plurality of terminals are connected within the introduction wall portion in the front-rear direction.   The introduction wall portion is provided with a tapered surface as an introduction upper guide surface on at least both end sides in the connector width direction, on the lower surface of the rear edge of the upper wall, for introducing and guiding the flat conductor downward toward the inside of the receiving portion. The electrical connector for flat conductors according to claim 1 or 2.   The introduction wall portion is provided with a tapered surface as an introduction side portion guide surface on the inner surface of the rear edge of the side wall, for introducing and guiding the side edge of the flat conductor inward in the connector width direction. The flat connector electrical connector according to claim 3.   The introduction wall portion has a recessed portion in which the rear end of the lower wall is recessed forward in the connector width direction in the arrangement region of the terminal connecting portion, and the connecting portion is exposed and protrudes rearward in the recessed portion. 5. An electrical connector for a flat conductor according to claim 1, wherein the electrical connector is a flat conductor.

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