JP6002636B2 - Flat cable terminal fitting - Google Patents

Description

  The present invention relates to a flat cable terminal connector, and more particularly, to a flat cable terminal connector that guides insertion and electrical connection of a terminal portion where a conductor of a flat cable is exposed into a connector.

  Conventionally, a flexible printed circuit (FPC) or a flexible flat cable (FFC) is used as a wiring for connection in order to reduce wiring space and improve flexibility of wiring routes in various electronic devices and electric devices. A flat flexible cable (hereinafter referred to as a flat cable) such as a flexible flat cable is widely used. In the FPC, in order to connect an electric circuit formed on a flexible substrate to an external electric circuit, a terminal portion where a plurality of foil-like conductors are exposed is formed on the edge of the substrate. The FFC is formed with a plurality of foil-shaped conductors arranged between each other with an insulating film and terminal portions for connecting to other electric circuits at both ends. These flat cables are usually connected to other electric circuits via a detachable connector.

  The terminal portion of the flat cable has low rigidity, and there is a problem that it is deformed by insertion resistance when inserted into the connector or insufficient insertion occurs. Then, the connection form which assembles | attaches the terminal connector which has rigidity to the terminal part of a flat cable, and inserts into a connector via the assembled terminal connector is taken (refer patent document 1). In addition, the connector has a terminal for connecting to other electrical circuits. By inserting the terminal connector into the connector, the terminal of the connector and the conductor (terminal conductor) of the terminal portion of the flat cable come into contact. These terminals and the terminal conductor are electrically connected.

  In Patent Document 1, a guide member (hereinafter referred to as a slider) having a placement surface on which a flat cable terminal portion is placed, and a flat cable terminal portion placed on the placement surface are placed. The structure of the terminal connector provided with the cover pressed on a surface is disclosed. The slider is an interface member for guiding the flat cable when the flat cable is inserted into the connector and connecting the inserted flat cable to the connector. In this case, the slider has a configuration in which protrusions are formed on the side surfaces continuous to both end surfaces of the mounting surface. On the other hand, the cover is provided with a longitudinal member extending in the width direction of the end portion of the flat cable and an opening that can be suspended from both ends of the longitudinal member along the side surface of the slider and can be locked to the projection on the side surface. It has the structure which has an engaging member. When assembling such a terminal connector to the terminal portion of the flat cable, the longitudinal member of the cover is positioned on the terminal portion mounted on the mounting surface of the slider, and the engaging member of the cover is pushed down along the side surface of the slider. Then, the opening of the engaging member is engaged with the protrusion on the side surface of the slider. In this way, the slider and the cover are assembled with the terminal portion sandwiched, and the terminal connector and the flat cable including the slider and the cover are assembled. Thereby, a flat cable is electrically connected with this connector by inserting the terminal connector (slider and cover) assembled | attached to the terminal part to a connector.

JP 2010-73682 A

  However, in the configuration disclosed in Patent Document 1, the terminal connector includes a slider and a cover, and these are assembled to a flat cable. Therefore, in assembling the flat cable and the terminal connector, it is necessary to assemble the flat cable, the slider, and the cover with each other.

  The present invention has been made based on this, and the problem to be solved is to reduce the assembly work load between the flat cable and the terminal connector and to improve the stability of the assembly state.

  In order to solve the above-described problems, the present invention provides a mounting surface on which a terminal portion of a flat cable is mounted, and a pair formed on both sides in the width direction of the terminal portion of the flat cable so as to protrude from the mounting surface. A flat cable terminal connector used when inserting and connecting a terminal portion of a flat cable to a connector of a connection partner, the pair of locking portions. Is placed on the mounting surface, and an elastically deformable arm formed by standing up from the bottom of the dug portion formed to be recessed in the mounting surface and projecting from the mounting surface A return protrusion formed at the tip of the arm so as to be engageable with a side edge of the locking opening of the flat cable, and a protrusion on the back side of the arm of the return protrusion so as to protrude from the mounting surface. Formed at a position where it can be inserted into the locking opening. Characterized by comprising a wall was.

  According to this, by aligning and pressing the locking opening of the flat cable to the pair of locking portions of the terminal connector, the arm bends and the return protrusion can be easily formed on the side edge of the locking opening of the flat cable. It can be locked. Accordingly, the flat cable can be directly and easily assembled to the terminal connector without using a cover that presses the terminal portion of the flat cable, and the flat cable can be prevented from being detached from the terminal connector. . It is also possible to separate the flat cable and the terminal connector from the assembled state by bending the arm within the digging portion and removing the return protrusion at the end of the arm from the edge of the locking opening of the flat cable. It becomes possible.

  In particular, according to the present invention, since the wall body is provided on the back side of the arm of the return protrusion, the side edges of the left and right locking openings of the fret cable are positioned by the arm and the wall body. Thereby, even if the external force which the terminal part of a flat cable shifts to right and left acts, position shift with the terminal part of a flat cable and a pair of locking parts can be pressed down. In addition, even if some external force acts on the arm or the return projection, the amount of flexure of the arm is regulated by the wall, so that the return projection is released from the locking opening and the flat cable is prevented from coming off the terminal connector. can do. In other words, in order to suppress the large deflection of the arm that causes the return protrusion to come off the side edge of the locking opening, the gap between the back of the arm and the wall is when the arm is bent back until it hits the wall. Furthermore, it is desirable to set the dimension so that the return protrusion is detached from the side edge of the locking opening. In addition, if the amount of bending of the arm is not regulated by the wall, the arm may be deformed excessively and may be damaged. However, according to the present invention, the arm is prevented from being deformed excessively and prevented from being damaged. it can. As a result, according to the present invention, the assembly work load between the flat cable and the terminal connector can be reduced, and the stability of the assembled state can be improved.

  In this case, the pair of locking portions can be formed so that the dimension of the arm in the front-rear direction of the flat cable insertion matches the dimension of the locking opening in the front-rear direction of insertion of the flat cable. Accordingly, the flat cable can be positioned in the front-rear direction with respect to the mounting surface of the terminal connector by the arms of the pair of locking portions.

  Moreover, the said wall body of a pair of said latching | locking part can have and form a curved wall corresponding to the front edge and rear edge of the insertion opening front-back direction of the said latching opening of the said flat cable. According to this, the flat cable can be positioned in the front-rear direction with respect to the placement surface of the terminal connector by the curved wall. As a result, since it is not necessary to match the dimension of the arm before and after insertion with the dimension of the latching opening before and after insertion, the force for elastically deforming the arm can be reduced, so the flat cable terminal can be easily used as a terminal connector. Can be assembled to.

  Further, the pair of locking portions are formed by shifting the position of the flat cable in the longitudinal direction of insertion of the flat cable, and the position of the locking opening of the flat cable corresponds to the positional deviation of the pair of locking portions. Thus, it can be formed by shifting the position in the longitudinal direction of insertion. That is, the pair of locking portions and the pair of locking openings can be formed at the left and right asymmetric positions of the flat cable. In the operation of assembling the flat cable 2 to the terminal connector 1, it is possible to prevent the back and front of the flat cable 2 from being erroneously assembled to the terminal connector 1.

  Further, the direction of the return protrusions of the pair of locking portions may be either outward or inward in the width direction of the flat cable as long as it is engaged with the side edge portion of the locking opening in the front-rear direction. However, the direction of the pair of return protrusions is preferably opposite to each other or opposite to each other. Thereby, the positioning effect is further improved.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the assembly work load of a flat cable and a terminal connector, the improvement of the stability of the assembly | attachment of a flat cable and a terminal connector can be aimed at.

It is a perspective view which shows the state before attaching the terminal part of a flat cable to the terminal connector of one Embodiment of this invention. It is operation | movement explanatory drawing which assembles | attaches the terminal connector of embodiment of FIG. 1 to the terminal part of a flat cable, and inserts it in a connector. It is sectional drawing which shows the structure of the latching | locking part which is the characteristic part of the terminal connector of embodiment of FIG. It is a figure explaining the state which assembled | attached the terminal part of the flat cable with the terminal connector of embodiment of FIG. 1, and the state which isolate | separates them. It is a top view of the mounting surface of the flat cable of the modification of the terminal connector of embodiment of FIG. 1, and the terminal part of a flat cable. It is a top view which shows the state which assembled | attached the terminal part of the flat cable to the terminal connector of the modification of FIG.

  The flat cable terminal connector of the present invention will be described below with reference to the accompanying drawings. The present invention is a terminal connector for inserting and connecting a terminal portion of a flat cable including a conductor and a pair of covering portions sandwiching the conductor into a connector of a connection partner. In addition, as a flat cable assembled | attached to the terminal connector which concerns on this invention, it is a flat flexible cable used in order to aim at the reduction of the wiring space in various electronic devices and an electric device, and the improvement of the freedom degree of a wiring route. For example, a flexible circuit board (FPC: Flexible Printed Circuit) or a flexible flat cable (FFC: Flexible Flat Cable) is assumed. The terminal connector is a guide member that serves as an interface for guiding the terminal portion of the flat cable and connecting the flat cable to the connector when the flat cable is inserted into the connector for connection to another electrical circuit. Yes, also called a slider.

  Fig.1 (a) is a perspective view which shows the structure of the terminal connector 1 of one Embodiment of this invention, and the terminal part 3 of the flat cable 2 before the assembly | attachment to the terminal connector 1. FIG. (B) is the enlarged view of the A section of the same figure (a). The terminal connector 1 shown in FIG. 1A shows the placement surface (back surface) side on which the terminal portion 3 of the flat cable 2 is placed. FIG. 2A shows a perspective view of the surface side of the terminal connector 1 before being assembled to the flat cable 2. FIG. 2B shows a state before the terminal connector 1 is assembled to the flat cable 2 and inserted and connected to the connector 4.

  As shown in FIGS. 1 and 2, the flat cable 2 is formed by covering a plurality of conductors 21 and these conductors 21 with a covering portion 22. The conductor 21 is made of a rectangular or foil-like conductive material, and a plurality of such conductive materials are arranged in parallel to constitute one flat cable 2. The covering portion 22 is made of an insulating material (resin insulating film or the like) and has a configuration in which a plurality of conductors 21 are sandwiched from the upper side and the lower side in a band shape over the length direction. And the flat cable 2 has the terminal part 3 for connecting with another electric circuit, and this terminal part 3 cuts off the covering part 22 of the assembly side (upper side in FIG. 1) of the conductor 21. Thus, the exposed end 21a of the conductor 21 is exposed to the outside. Further, in the flat cable 2, the full width of the covering portion 22 is set larger than the full width of the plurality of conductors 21 in the width direction, and the covering is configured only by the covering portions 22 on both sides of the full width of the conductor 21. It has an end 24. The exposed end 21a has a configuration in which the covering end portions 24 at both ends in the width direction are cut off. Therefore, the flat cable 2 is configured such that the exposed end 21a on the distal end side of the terminal portion 3 is narrower than the other intermediate portions.

  The terminal portion 3 of the flat cable 2 is formed with a pair of locking openings 26 that pass through the covering end 24 and are locking openings. Specifically, a pair of locking openings 26 (26a, 26b) are formed in the covering end portions 24 at both ends in the width direction and in the vicinity of the exposed end 21a. These locking openings 26 are locked to a pair of locking portions 13 described later. The configuration (shape, size, arrangement, etc.) of the locking opening 26 can be arbitrarily set as long as the locking portion 13 can be locked. In the present embodiment, a configuration of a rectangular locking opening 26 having a long side in the length direction with respect to the width direction of the flat cable 2 is shown as an example. The insertion direction corresponds to the insertion direction (front-rear direction) of the flat cable 2 into the connector 4. Therefore, in the present embodiment, the locking opening 26 is formed so that the pair of long side edges 27 face each other in parallel along the insertion front-rear direction, and the short side edge 28 is inserted. It is formed so as to be orthogonal to the front-rear direction and to face each other in parallel.

  The terminal connector 1 is formed with a mounting surface 11 on which the terminal portion 3 of the flat cable 2 is mounted, and a locking portion 13 (13a, b) that locks the flat cable 2 and is formed so as to protrude from the mounting surface 11. ). In this case, the terminal connector 1 is a structure having a length corresponding to the width of the terminal portion 3 of the flat cable 2 (in other words, the entire width of the covering portion 22). A placement surface 11 on which the terminal unit 3 is placed is formed. On the mounting surface 11, a projecting portion 14 that abuts on the front edge (terminal edge) of the terminal portion 3 and positions the terminal portion 3 is extended. At that time, the extension height of the protrusion 14 may be set to be approximately the same as the thickness of the flat cable 2 or slightly larger than that. Further, the mounting surface 11 is lightened by removing a part of the mounting surface 11 to form a recess 15, and the mounting surface 11 for mounting the terminal portion 3 on a flat portion other than the recess 15. Is formed. The number and size of the recesses 15 are not particularly limited as long as the size of the placement surface 11 and the strength of the terminal connector 1 can be sufficiently secured. The terminal connector 1 includes a connector locking portion 16 for locking the connector 4 connected to the flat cable 2 on the side opposite to the placement surface 11.

  Here, the structure of a pair of latching | locking part 13 which is the characteristic part of a present Example is demonstrated with reference to FIG.1 (b), FIG.3, and FIG.4. FIG. 1B is an enlarged view of a portion surrounded by a one-dot chain line A in FIG. 3A is a cross-sectional view as seen from an arrow IIIa in FIG. 1B, and FIG. 3B is a cross-sectional view as seen from an arrow IIIb in FIG. 1B. As shown in these drawings, the locking portion 13 is formed so as to protrude from the placement surface 11 from the digging portion 41 formed to be recessed from the placement surface 11 and the bottom portion 42 of the digging portion 41. The arm 43 is configured to have an elastically deformable arm 43 and a return projection 44 that protrudes from the projecting end of the arm 43 and is engaged with the engagement opening 26. In addition, in order to form the arm 43 so that elastic deformation is possible, it is preferable to comprise the terminal connector 1 or the latching | locking part 13 with elastic materials, such as resin, for example. In the present embodiment, the terminal connector 1 has a pair of locking portions 13 (13a, 13b) at both ends in the width direction X corresponding to the locking openings 26 (26a, 26b) of the flat cable 2. Is provided. In this case, the configuration (shape, size, arrangement, etc.) of the locking portion 13 can be arbitrarily set as long as it can be locked to the locking opening 26.

  In addition, the locking portion 13 extends along the arm 43 on the projecting side of the return projection 44 with respect to the arm 43 (in other words, on the opposite side of the digging portion 41 with the arm 43 interposed therebetween). A hole 45 is perforated. The hole 45 is formed through the terminal connector 1 in a direction orthogonal to the placement surface 11. That is, the arm 43 is configured to protrude beyond the mounting surface 11 from the bottom 42 of the digging portion 41, in other words, the configuration in which the arm 43 is continuous with the terminal connector 1 at the remaining portion of the bottom 42 of the digging portion 41. It has become. Further, the dug portion 41 has a bottom portion 42 and is configured as a hole portion that opens to the placement surface 11. Thus, the arm 43 is configured to be able to bend and deform toward the digging portion 41 side and the hole 45 side by falling into the digging portion 41 or the hole portion 45. In this case, the digging portion 41 and the hole portion 45 are set such that the dimension L3 in the front-rear direction of the flat cable 2 is larger than the dimension in the same direction of the arm 42. Further, the thickness of the remaining portion of the bottom portion 42 of the digging portion 41 that becomes a continuous portion of the arm 43 with the terminal connector 1 (that is, the base end portion of the arm 43), in other words, the depth of the digging portion 41. This affects the amount of elastic deformation that correlates with the protruding length of the arm 43, and the arm 43 can have a sufficient amount of elastic deformation toward the digging portion 41 side and the hole portion 45 side. Set to depth. In the present embodiment, the hole 45 is a through hole that is perforated so as to penetrate the terminal connector 1 in a direction orthogonal to the placement surface 11, but the bottom portion does not penetrate the terminal connector 1. It is also possible to have the same configuration as the digging portion 41 as a hole opening in the mounting surface 11.

  In the present embodiment, the wall body 51 is formed at a position where the return protrusion 44 is positioned on the back side of the arm 43, protrudes from the mounting surface 11 and can be inserted into the locking opening 26. In this embodiment, the wall body 51 has a main wall 51a formed in parallel to the long side of the digging portion 41 with a certain interval on the back side of the arm 43, and both ends of the arm 43 in the front-rear direction. It is provided with curved walls 51b, c formed parallel to the short side of the digging portion 41 at a certain interval on the side. That is, the arm 43 is provided so as to surround the side surface excluding the return projection 44 side. The ends of the main wall 51a and the curved walls 51b, c are provided with inclined portions so that the locking openings 26 to be locked can be easily inserted.

  3A, the distance L1 between the surface of the arm 43 on the return projection 44 side and the surface of the main wall 51a on the opposite side of the arm 43 is the edge of the pair of short sides of the locking opening 26. It is formed in accordance with the interval dimension of the portion 28. The distance L1 between the bent wall 51b and the bent wall 51c of the wall body 51, that is, the dimension L2 in the front-rear direction of the insertion of the flat cable 2 is an edge of a pair of long sides corresponding to the front-rear direction of the insertion of the flat cable 2 It is formed in accordance with the interval dimension of the portion 27.

  On the other hand, the return protrusion 44 is provided so as to protrude outward from the protruding end of the arm 43 in the width direction (to the hole 45 side with respect to the arm 43). In this case, the return protrusion 44 has an inclined surface (hereinafter referred to as a pickup portion) 44 a that gradually inclines from the outside to the inside in the width direction of the flat cable 2, and tapers toward the extending end of the arm 43. It is comprised so that. Thereby, when the flat cable 2 and the terminal connector 1 are assembled, the pick-up portion 44a of the return protrusion 44 becomes a guide portion for the locking opening 26, and the locking opening 26 is smoothly inserted into the return protrusion 44 and further to the arm 43. be able to. In addition, since the coating | coated end part 24 in which the latching opening 26 is formed is comprised only with the coating | coated part 22, it can be elastically deformed. Therefore, by slightly expanding the locking opening 26 by elastic deformation, even the return protrusion 44 protruding from the protruding end of the arm 43 can be inserted into the locking opening 26 using the pickup portion 44a as a guide. Moreover, in this embodiment, although the return protrusion 44 is provided so that it may protrude outside with respect to the width direction of the flat cable 2, the protrusion direction of the return protrusion 44 is not limited to this. For example, in the present embodiment, the arm 43 is configured to be able to bend and deform toward the digging portion 41 by falling into the digging portion 41, and to the hole 51 side by falling into the hole 51. Also has a structure that can be bent and deformed. Therefore, it is also possible to provide the return protrusion 44 so as to protrude inward (to the digging portion 41 side with respect to the arm 43) with respect to the width direction of the flat cable 2. That is, if the direction of the elastic force of the arm coincides, the return protrusion can be configured to protrude in an arbitrary direction. In short, it is preferable to provide the return protrusions 44 of the pair of locking portions 13a and 13b so as to protrude in opposite directions as in the present embodiment. As a result, the elastic force of the arm 43 acts to spread the flat cable 2 in the width direction via the pair of locking openings 26a, b of the flat cable 2, so that the positioning and holding force of the flat cable 2 is improved. be able to.

  Moreover, the return protrusion 44 has the return surface 44b which opposes the mounting surface 11 at intervals corresponding to the thickness T (FIG. 3A) of the flat cable 2. The return surface 44b is an arm. 43 is locked to the side edge portion of the locking opening 26 inserted through 43. In this case, the return surface 44b covers the upper covering portion 22 so that the locking opening 26 can be locked over the entire surface. It is formed so as to be parallel to the surface of the end portion 24. Thus, the entire return surface 44b can be brought into close contact with the surface of the covered end portion 24 in a state where the arm 43 is inserted into the locking opening 26. The locking projection 26 can be reliably locked by the return projection 44.

  Here, when the flat cable 2 and the terminal connector 1 are assembled, the locking opening 26 and the return protrusion 44 of the locking portion 13 may be locked by an example of the following procedure.

  First, the terminal connector 1 is left stationary, and the terminal portion 3 of the flat cable 2 is positioned with respect to the mounting surface 11 of the terminal connector 1. At this time, the covering side (the non-exposed side) of the conductor 21 of the terminal portion 3 of the flat cable 2 is directly opposed to the placement surface 11, and the position of the locking opening 26 is set to the locking portion 13, specifically, The flat cable 2 is moved to the placement surface 11 side while aligning the outer periphery of the main wall 51a and the curved walls 51b, c of the wall body 51 and the pick-up portion 44a of the return projection 44 so as to be located in the locking opening 26, The edge portion 28 of the locking opening 26 is brought into contact with the pick-up portion 44a. And the terminal part 3 of the flat cable 2 is pressed to the mounting surface 11 side, a pressing force is returned from the edge part 28 of the latching opening 26 via the pick-up part 44a, and it acts on the protrusion 44, The arm 43 is made into the flat cable 2 Are bent and deformed inward in the width direction (Y direction in FIG. 4A).

  By moving the flat cable 2 toward the mounting surface 11 with the pressing force acting in this manner, the return protrusion 44 is inserted into the locking opening 26 while sliding the edge portion 28 along the pick-up portion 44a. Let At this time, the other edge portion 28 of the locking opening 26 is inserted along the main wall 51a. At that time, the locking opening 26 is slightly expanded by elastic deformation due to the pressing force. Then, the flat cable 2 is further moved to the placement surface 11 side until the terminal portion 3 comes into contact with the placement surface 11 and is placed. When the flat cable 2 is moved until this state is reached, the pressing force applied to the return projection 44 from the edge portion 28 of the locking opening 26 via the pick-up portion 44a is not applied, and the bending of the arm 43 is restored. . In this state, as shown in FIG. 4B, the locking opening 26 contacts the outer peripheral surfaces of the main wall 51a and the curved walls 51b, c of the wall 51, and the arm 43 is locked to the locking opening 26. Is inserted. And the front edge of the terminal part 3 contact | abuts to the protrusion 14 of the mounting surface 11, and the flat cable 2 is positioned with respect to the terminal connector 1. FIG.

  Thereby, the latching opening 26 is latched with the return projection 44, and more specifically, the edge portion 28 of the latching opening 26 is latched with the return surface 49b of the return projection 44 (see FIG. 4B). ). That is, the flat cable 2 and the terminal connector 1 can be assembled in a state of being locked to each other (the state shown in FIG. 2B). In this state, the exposed terminal 21a of the conductor 21 of the terminal portion 3 in the flat cable 2 is exposed to the outside, and both end faces in the width direction of the terminal portion 3 are exposed to the outside.

  In addition, the flat cable 2 assembled | attached with the terminal connector 1 is assembled | attached with the connector 4 by inserting this terminal connector 1 in the connector 4, as shown to Fig.1 (a). Thereby, the flat cable 2 can be connected to another electric circuit via the connector 4.

  On the other hand, when removing the terminal connector 1 from the flat cable 2 to which the terminal connector 1 is assembled, the tip of the arm 43 is bent in the direction of the arrow 60 as shown in FIGS. I will. Thereby, the locking between the return protrusion 44 and the edge portion 28 of the locking opening 26 can be released. In this state, the terminal connector 1 can be easily detached from the flat cable 2 by separating the flat cable 2 from the placement surface 11 in the direction indicated by the arrow 61 in FIG. FIG. 4E is an enlarged view of a portion surrounded by an alternate long and short dash line B in FIG. Moreover, FIG.4 (f) is sectional drawing which shows the state by which the terminal part 3 was latched by a pair of latching | locking part 13a, b.

  According to the present embodiment, the locking opening 26 of the flat cable 2 is aligned with the pair of locking portions 13 of the terminal connector 1 and pressed against the placement surface 11, so that the arm 43 is bent and the flat cable 2 is The return protrusion 44 can be easily locked to the side edge portion 28 of the locking opening 26. Accordingly, the flat cable 2 can be directly and easily assembled to the terminal connector 1 without using a cover for pressing the terminal portion 3 of the flat cable 2, and the flat cable can be detached from the terminal connector 1. Can be suppressed. Further, the flat cable 2 and the terminal connector 1 are connected to each other by bending the arm 43 in the digging portion 41 and removing the return protrusion 44 at the tip of the arm 43 from the edge portion 28 of the locking opening 26 of the flat cable 2. It is also possible to separate it from the assembled state. That is, the flat cable 2 can be removably assembled to the terminal connector 1.

  In particular, according to the present embodiment, since the main wall 51a of the wall body 51 is provided on the back side of the arm 43 of the return protrusion 44, the edge portions 27 of the left and right locking openings 26 of the fret cable 2 are provided. , 28 are positioned by the arm 43 and the main wall 51a. Thereby, even if the external force which the terminal part 3 of the flat cable 2 shifts to right and left (width direction) acts, the position shift of the terminal part 3 of the flat cable 2 and a pair of latching | locking part 13 can be suppressed. .

  Even if some external force acts on the arm 43 or the return protrusion 44, the amount of bending of the arm 43 is restricted by the main wall 51 a of the wall body 51 as shown in FIG. Thereby, it can suppress that the return protrusion 44 remove | deviates from the latching opening 26, and the flat cable 2 remove | deviates from the terminal connector 1. FIG. Therefore, in order to suppress the large deflection of the arm 43 such that the return protrusion 44 is disengaged from the edge 28 of the locking opening 26, the gap between the back surface of the arm 43 and the main wall 51a is until the arm 43 hits the main wall 51a. It is desirable to set the dimension so that the return protrusion 44 is disengaged from the edge portion 28 of the locking opening 26 when bent back. Further, if the amount of bending of the arm 43 is not restricted by the main wall 51a, the arm 43 may be excessively deformed and damaged, but according to the present embodiment, excessive deformation of the arm 43 of the locking portion 13 is caused. Can prevent damage.

  Further, according to the present embodiment, the wall body 51 is formed to have the curved walls 51 b and c corresponding to the front edge and the rear edge of the edge portion 27 in the insertion front-rear direction of the locking opening 26 of the flat cable 2. Therefore, the flat cable 2 can be positioned in the front-rear direction with respect to the placement surface 11 of the terminal connector 1 by the curved walls 51b and 51c. As a result, it is not necessary to match the dimension of the arm 43 in the longitudinal direction of insertion with the dimension of the locking opening 26 in the longitudinal direction of insertion. Therefore, the terminal portion 3 of the flat cable 2 can be easily assembled to the terminal connector 1.

  Furthermore, according to the present embodiment, the distance L4 between the main walls 51a of the pair of locking portions 13a and 13b shown in FIG. 5A and the pair of locking openings 26a shown in FIG. By aligning with the separation dimension L5 of the edge portion 27 of 26b, the terminal portion 3 of the flat cable 2 can be accurately positioned. As a result, there is little change in the relative position in the left-right direction of the pair of locking portions 13a, 13b and the pair of locking openings 26a, 26b, so that the assemblability is stable. Similarly, by matching the distance between the curved walls 51b, c of the pair of locking portions 13a, 13b and the size of the edge 28 of the pair of locking openings 26a, 26b, the relative positions in the front-rear direction can be increased. Since there is little change, assembly is stable.

  Further, as shown in FIG. 5 (a), the pair of locking portions 13a, 13b are formed by shifting the position of the flat cable 2 in the front-rear direction of insertion by a dimension L6. ), The positions of the pair of locking openings 26a and 26b of the flat cable 2 are formed so as to correspond to the positional shift of the pair of locking portions 13a and 13b, and the position in the front-and-rear direction of insertion is shifted by a dimension L6. doing. In other words, the pair of locking portions 13 a and 13 b and the pair of locking openings 26 a and 26 b are formed at the left and right asymmetric positions of the flat cable 2. Thereby, as shown in FIG. 6, in the operation | work which assemble | attaches the flat cable 2 to the terminal connector 1, the back and front of the flat cable 2 can be assembled | attached to the terminal connector 1 without an error. For example, even if the back and front of the flat cable 2 are mistakenly assembled to the terminal connector 1, the positions of the pair of locking portions 13a and 13b and the locking openings 26a and 26b do not match. Can be prevented.

  In addition, the direction of the return protrusions 44 of the pair of locking portions 13 is outward or inward in the width direction of the flat cable 2 as long as it is engaged with the side edges 28 in the front-rear direction of the insertion of the locking openings 26. Either is fine. However, the direction of the pair of return protrusions 44 is preferably such that they face each other or are opposite to each other. Thereby, the positioning effect is further improved.

  In the above-described embodiment, the curved walls 51b and 51c are provided so as to be brought into contact with the edge of the short side of the locking opening 26 of the flat cable 2 and positioned. However, the curved walls 51b and 51c are omitted by setting the dimension of the arm 43 in the longitudinal direction of the insertion of the flat cable 2 to the dimension of the long side of the locking opening 26 (in other words, approximately the same dimension as the opposing dimension of the short side). can do.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to these, It is possible to implement in the form deform | transformed or changed in the range of the main point of this invention. It will be obvious to those skilled in the art, and it is obvious that such modifications or alterations belong to the scope of the claims of the present application.

DESCRIPTION OF SYMBOLS 1 Terminal connector 2 Flat cable 3 Terminal part 4 Connector 11 Mounting surface 13 Locking part 26 Locking opening 41 Digging part 42 Bottom part 43 Arm 44 Return protrusion

Claims (4)

A mounting surface on which the terminal portion of the flat cable is mounted, and a pair of locking surfaces that are protruded from the mounting surface and locked to a pair of locking openings formed on both sides in the width direction of the terminal portion of the flat cable. A flat cable terminal connector used when inserting and connecting the terminal portion of the flat cable to the connector of the connection partner,
The pair of locking portions are elastically deformable arms formed so as to stand up from a bottom portion of a dug portion formed to be recessed in the mounting surface and protrude from the mounting surface, The return protrusion formed at the tip of the arm so as to be engageable with the side edge of the engagement opening of the flat cable placed on the surface, and the return protrusion positioned on the back side of the arm as described above A flat cable terminal connector comprising: a wall body that protrudes from the mounting surface and is formed at a position that can be inserted into the locking opening.   The pair of locking portions are formed so that a dimension of the arm in the front-rear direction of the flat cable is matched with a dimension of the locking opening in the front-rear direction of the flat cable. The flat cable terminal connector according to 1.   The wall body of the pair of locking portions is formed to have a curved wall corresponding to a front edge and a rear edge in the insertion front-rear direction of the locking opening of the flat cable. The flat cable terminal connector according to 1.   The pair of locking portions are formed by shifting the position of the flat cable in the longitudinal direction of insertion of the flat cable, and the position of the locking opening of the flat cable is inserted corresponding to the positional deviation of the pair of locking portions. 2. The flat cable terminal connector according to claim 1, wherein the positions in the front-rear direction are shifted from each other.

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