JP6488934B2 - Flat cable connector plug - Google Patents

Description

  The present invention relates to a connector plug for flat cables such as FFC and FPC used for OA equipment and the like, and more particularly to a flat cable connector plug having a cable holding structure and a connector fitting lock structure.

  Conventionally, as a connector for flat cables such as FFC, FPC, etc., a connector plug with a reverse insertion prevention function is attached to the tip of the flat cable so that it can be fitted in a place with poor visibility and the fitting property is improved. A type in which this is detachably connected to a connector socket is generally used. Such a flat cable connector plug has a structure in which the flat cable and the connector plug are bonded, or a structure in which the flat cable is held and held by two or more parts. In the structure to be bonded, an adhesive tape is attached to a flat cable or a connector plug, and pressed while applying heat to fix the connector plug and the flat cable.

JP 2002-008789 A

  In Patent Document 1, an insulating substrate having a plurality of conductive portions conducting to each cable is fixed to the first cover member made of a metal plate by forming an adhesive or the back surface of the substrate to be adhesive, A connector plug formed by assembling an insulating member and a second cover member is described, which can maintain strength even when the first cover member is formed thin and can be formed extremely thin. .

  However, in the conventional structure in which the flat cable is fixed with two or more parts, the number of assembling steps is increased, and in the structure in which the flat cable is bonded, the pitch deviation of the flat cable terminal occurs due to heat and the yield decreases. There is a problem.

  Therefore, the present invention provides a flat cable connector plug that employs a one-piece structure connector plug to reduce the problems of conventional flat cable connector plugs, thereby reducing assembly man-hours and improving yield. The purpose is to do.

In order to solve the above problems, the flat cable connector of the present invention is a connector plug for a flat cable connecting the flat cable to the connector socket, facing the a distal end on the side of inserting the connector socket co Nekutapuragu provided on the rear end side, the cable insertion opening flat cable is inserted having a shape notch on both sides near the distal end, and, provided on the side where the inserted flat cable to expose the flat cable normal When inserted to a position, engages notch engaging shape provided on the flat cable, a cable housing having a cable lock portion flat cable is retained, provided on the distal end side, inserted to a regular position a socket insert portion to induce been flat cable connector socket, form integrally with the outer periphery of the cable housing Lock part having a pressing part supported movably via a lock spring part, and an engaging projection part formed integrally with the pressing part and detachably engaged with the fitting part of the connector socket And when the lock portion is attached to and detached from the fitting portion of the connector socket, a lock portion holding portion that engages with the periphery of the opening of the lock portion .

  Moreover, it is a protrusion part provided in the position which overlaps with the said press part of the said cable accommodating part, Comprising: It is good also as a thing further provided with the press restriction part which restrict | limits rotation of the said lock part at the time of operation of the said press part.

  Also, a protrusion provided toward the side of the front end of the lock portion facing the engagement protrusion, and further comprising an erroneous insertion prevention portion for preventing erroneous insertion into the connector socket It is good.

  The cable lock portion may be provided in the vicinity of both side surfaces of the cable housing portion, and may be formed in a notch shape having spring properties and facing in the direction of the both side surfaces.

  Further, the cable lock portion may be provided in the vicinity of both side surfaces of the cable housing portion, and may be formed in a notch shape having a spring property and facing the distal direction.

  Further, the cable lock portion is formed to have a spring property so that when the cable insertion port of the cable housing portion opens in both side directions and the flat cable is inserted to a normal position, the cable lock portion returns to the original position. It is good also as what is done.

  According to the present invention, in order to eliminate the problems of conventional flat cable connector plugs, a one-piece connector plug is employed, and a flat cable connector plug that can reduce assembly man-hours and improve yield is provided. can do.

It is a perspective view which shows the connector plug for flat cables of this invention, a connector socket, and a flat cable simultaneously. 2A is a front view showing a flat cable connector plug of the present invention, FIG. 2B is a top view, FIG. 2C is a rear view, and FIG. ) Is a right side view, and FIG. 2E is a cross-sectional view taken along IIe-IIe in FIG. FIG. 3A is an upper perspective view showing the flat cable connector plug of the present invention, and FIG. 3B is a lower perspective view. It is an upper side perspective view which shows the state with which the connector plug for flat cables of this invention and the flat cable were fitted. It is a top view which shows the state before the connector plug for flat cables of this invention, the state where the flat cable was fitted, and the state before fitting. 6A is a rear view of the flat cable connector plug of the present invention, and FIG. 6B is a cross-sectional view taken along line VIb-VIb of FIG. 6A. FIG. 7A is an upper perspective view showing the flat cable connector plug of the present invention and a state immediately before the flat cable is fitted, and FIG. 7B is a view showing the VIIb portion of FIG. FIG. 7C is an enlarged transparent view, and FIG. 7C is a cross-sectional view showing, in an enlarged manner, a state before the flat cable and the cable lock portion shown in VIIc-VIIc of FIG. 4 are fitted. FIG. 8A is a front view showing a state in which the flat cable connector plug of the present invention is fitted with the flat cable, and FIG. 8B is a cross-sectional view taken along line VIIIb-VIIIb in FIG. FIG. FIG. 9A is a rear view of the connector plug for a flat cable of the present invention having a connector lock portion having a shape different from that of FIG. 6A, and FIG. 9B is a view of FIG. 9A. It is sectional drawing shown to IXb-IXb. FIG. 10A is a front view showing a state in which the flat cable connector plug and the flat cable connector plug of the present invention having a connector lock portion of another shape different from those in FIGS. 6A and 9A are fitted. 10 (b) is a rear view, FIG. 10 (c) is a right side view, and FIG. 10 (d) is a sectional view taken along line Xd-Xd in FIG. 10 (c). . FIG. 11A is a rear view showing a state where the flat cable connector plug, the connector socket, and the flat cable of the present invention are fitted, and FIG. 11B is a cross-sectional view taken along line XIb− of FIG. It is sectional drawing shown to XIb. 12A is an enlarged top perspective view showing the XIIa portion of FIG. 4, and FIG. 12B is a cross-sectional view when the flat cable connector plug is erroneously inserted into the connector socket. FIG. 13A is a front view as seen from the connector insertion port side of a conventional flat cable connector plug, and FIG. 13B is a front view as seen from the connector insertion port side of the flat cable connector plug of the present invention. It is.

  Embodiments of the present invention will be described below with reference to the drawings.

  In addition, the concept of the up-down direction in the following description corresponds to the up-down direction in the attached drawings, and indicates a relative positional relationship between the members, and does not indicate an absolute positional relationship. In the following description, for convenience, the insertion direction of the connector is indicated as “front end”, the reverse direction of the connector insertion direction is indicated as “rear end”, and the left-right direction is a direction orthogonal to the insertion direction of the connector. Indicates “left and right”, but does not indicate an absolute positional relationship.

  FIG. 1 is a perspective view showing a flat cable connector plug 100, a connector socket 200, and a flat cable 10 of the present invention at the same time.

  In FIG. 1, the flat cable connector plug 100 is detachably connected to the connector socket 200 after the flat cable 10 is inserted. As shown in FIG. 5 to be described later, a contact portion 11 is formed at the tip of the flat cable 10 where the coating is removed and a plurality of internal electrodes are exposed. Similarly, as shown in FIG. A notch shape 12 is formed on both sides in the vicinity of the tip. Here, the cutout shape 12 has a shape in which the rear end side is cut out obliquely, but is not limited to this shape, and may be a cutout shape vertically or other shapes. . Further, the cutout shape 12 may be on the front end side or the rear end side from the position shown in FIG. The connector plug 100 has a one-piece structure integrally formed of resin. The connector socket 200 includes a metal contact terminal 201 and a fixing bracket 202 that connect a circuit board (not shown) and the contact portion 11 of the flat cable 10, and a housing 203 that is the other part is formed of resin.

  2 (a) is a front view showing the flat cable connector plug 100 of the present invention, FIG. 2 (b) is a top view, FIG. 2 (c) is a rear view, and FIG. d) is a right side view, FIG. 2 (e) is a cross-sectional view taken along IIe-IIe in FIG. 2 (c), and FIG. 3 (a) shows the flat cable connector plug 100 of the present invention. FIG. 3 (b) is a lower perspective view.

  2A to 3B, the connector plug 100 includes a cable housing portion 110 provided on the rear end side facing the front end side, which is the side to be inserted into the connector socket 200, and the connector plug 100. A socket insertion portion 120 that is provided on the distal end side and guides the flat cable 10 inserted to a normal position to the connector socket 200, and is provided on a side opposite to the side where the inserted flat cable 10 is exposed. And a lock part 130 for fitting.

  A cable insertion port 111 for inserting the flat cable 10 is formed in the cable housing portion 110 on the rear end side. Further, the flat cable 10 inserted into the cable insertion port 111 passes through the cable housing portion 110 and reaches the socket insertion portion 120 provided on the distal end side. The flat cable 10 reaching the socket insertion portion 120 is exposed on the lower surface shown in FIG. 3B, and the contact portion 11 appears on the surface. Thereby, when the connector plug 100 is connected to the connector socket 200, the contact portion 11 is connected to the metal contact terminal 201 of the connector socket 200. The state where the flat cable 10 is inserted into the connector plug 100 is shown in FIGS.

  FIG. 4 is an upper perspective view showing a state in which the flat cable connector plug 100 of the present invention and the flat cable 10 are fitted, and FIG. 5 shows the flat cable connector plug 100 of the present invention and the flat cable 10. It is a top view which shows the state before fitting and the state before fitting simultaneously.

  As shown in FIGS. 4 and 5, the flat cable 10 in which the cutout shape 12 is formed on both sides near the tip is inserted into the cable insertion port 111 of the connector plug 100, passes through the cable housing portion 110, and is inserted into the socket. The insertion portion 120 is reached.

  Returning to FIG. 2A to FIG. 3B, when the flat cable 10 is inserted into the normal position on the surface of the connector plug 100 on the side where the flat cable 10 into which the cable housing portion 110 is inserted is exposed, A cable lock portion 112 that is engaged with the notch shape 12 provided in the flat cable 10 and holds the flat cable 10 is formed. The detailed shape of the cable lock 112 is shown in FIGS. 6 (a) to 7 (c).

  6 (a) is a rear view of the flat cable connector plug 100 of the present invention, FIG. 6 (b) is a cross-sectional view taken along VIb-VIb of FIG. 6 (a), and FIG. 7 (a). These are the upper perspective views which show the state just before the flat cable 10 and the connector plug 100 for flat cables of this invention fit, FIG.7 (b) is the transmission which expanded the VIIb part of Fig.7 (a). FIG. 7C is an enlarged cross-sectional view showing a state before the flat cable 10 and the cable lock portion 112 shown in VIIc-VIIc of FIG. 4 are fitted.

  6 (a) to 7 (c), the cable lock portion 112 is provided in the vicinity of both side surfaces of the surface on which the flat cable 10 into which the cable housing portion 110 is inserted is exposed, and has both spring properties. It is formed in a cutout shape facing the surface direction. As shown in FIG. 6B, the cable lock portion 112 has a wall shape perpendicular to the insertion direction on the front end side and a tapered shape inclined toward the rear end side. For this reason, as shown in FIG. 7B, when the flat cable 10 is inserted from the cable insertion port 111 at the rear end of the cable housing portion 110, the cable lock portion 112 is displaced downward accordingly. Further, as shown in FIG. 7C, when the flat cable 10 is inserted to the normal position, the cable lock displaced downward into the notch shape 12 formed on both sides near the tip of the flat cable 10. The portion 112 is returned and fitted by the reaction force of the spring. At this time, since the wall shape perpendicular to the insertion direction is formed on the distal end side of the cable lock portion 112, the cutout shape 12 of the fitted flat cable 10 is engaged, and the flat cable 10 cannot be pulled out. It becomes. A cross-sectional view of the connector plug 100 and the flat cable 10 in a fitted state is shown in FIG.

  FIG. 8 (a) is a front view showing a state where the flat cable connector plug 100 of the present invention and the flat cable 10 are fitted, and FIG. 8 (b) is a view of VIIIb-VIIIb in FIG. 8 (a). It is sectional drawing shown.

  As shown in FIG. 8B, when the flat cable 10 is inserted and reaches the normal position, the cable lock 112 is engaged with the cutout shape 12 of the flat cable 10, and the end of the flat cable 10 is inserted into the socket. The part 120 is reached and guided to the connector socket 200.

  9A is a rear view of the flat cable connector plug 900 of the present invention having a cable lock portion 912 having a shape different from that of FIG. 6A. FIG. 9B is a view of FIG. IXb-IXb of FIG.

  9A and 9B, unlike the connector plug 100 shown in FIG. 6A, the connector plug 900 has a surface on the side where the flat cable 10 into which the cable housing portion 910 is inserted is exposed. A notch-shaped cable lock portion 912 provided on both side surfaces and having a spring property and facing the distal end is formed. As shown in FIG. 9B, the cable lock portion 912 is formed with a wall shape perpendicular to the insertion direction on the front end side, similar to the cable lock portion 112 shown in FIG. 7B, and on the rear end side. A taper shape inclined in the opposite direction is formed. For this reason, the same effect as the cable lock part 112 shown to Fig.6 (a) can be show | played also by forming the notch which turned to the front end direction which has springiness like the cable lock part 912.

  FIG. 10A shows a state in which the flat cable connector plug 1000 and the flat cable 10 ′ having the connector lock portion 1012 having a shape different from those in FIGS. 6A and 9A are fitted. 10 (b) is a rear view, FIG. 10 (c) is a right side view, and FIG. 10 (d) is shown by Xd-Xd in FIG. 10 (c). It is sectional drawing.

  10 (a) to 10 (d), the connector plug 1000 has a cable insertion port 1011 of the cable housing portion 1010, unlike the connector plugs 100 and 900 shown in FIGS. 6 (a) and 9 (a). When the flat cable 10 'is inserted to the normal position and opened in the direction of the both side surfaces, a cable lock portion 1012 having a spring property is formed so as to return to the original position. As shown in FIG. 10 (d), the cable lock portion 1012 is formed with a wall shape that faces the left and right side surfaces and is perpendicular to the insertion direction on the front end side, and a tapered shape that is inclined toward the rear end side. . For this reason, the same effect as the cable lock parts 112 and 912 shown in FIG. 6A and FIG. 6 (a) to 10 (d), the cable lock portions 112, 912, and 1012 have a spring property. However, the cable lock portion has a flat shape with no spring property and is fixed. A gap through which the cable 10 passes may be provided.

  Returning to FIG. 2A to FIG. 3B, a rectangular protrusion 113 is formed on the surface of the cable accommodating portion 110 on the side where the inserted flat cable 10 around the cable insertion port 111 is exposed. Yes. By providing the rectangular protrusion 113, the operator's finger is easily applied to the connector plug 100, and the connector plug 100 is easily handled. In addition, on both side surfaces of the socket insertion portion 120, a quadrangular prism-shaped guide portion 121 facing in the insertion direction is formed. Since the guide part 121 is formed at a position shifted upward as shown in FIG. 2C of the socket insertion part 120, the guide part 121 serves as a guide for inserting the flat cable 10 into the connector socket 200 and points backward. It also has a prevention function.

  2 (a) to 3 (b), the lock portion 130 includes an engagement protrusion 131 for fitting with the fitting portion 205 of the connector socket 200 on the distal end side of the cable housing portion 110, and a rear portion. A pressing portion 132 for releasing the fitting with the fitting portion 205 of the connector socket 200 is formed on the end side. Further, the lock portion 130 is formed with a lock portion spring portion 133 that supports both sides of the lock portion 130, twists during the lock operation, and rotates the lock portion 130. Further, at a position overlapping the lock portion 130 of the cable housing portion 110, there is provided a rotation shaft projection 115 provided toward the lock portion 130 and serving as a rotation fulcrum of the lock portion 130. Thereby, the lock part 130 is supported by the lock part spring part 133 and rotates around the rotation shaft protrusion 115 as the rotation axis. Therefore, when the pressing portion 132 is pressed, the lock portion 130 rotates, the engagement protrusion 131 is disengaged from the fitting portion 205 of the connector socket 200, and the connector plug 100 can be inserted and removed from the connector socket 200.

  2A to 3B, when the connector plug 100 fitted in the connector socket 200 is removed around the position where the engagement protrusion 131 of the lock portion 130 of the cable housing portion 110 is located. Thus, the lock portion holding portion 116 which is a protrusion for engaging with the lock portion 130 and increasing the holding force strength and breakage strength of the lock portion 130 is formed. In the present embodiment, the lock holding portion 116 is formed as a U-shaped protrusion that is engaged with the opening 135 adjacent to the rear end side of the engagement protrusion 131 of the lock 130. The shape is not limited to this, and the shape is not limited to this shape as long as the shape engages with the lock portion 130 and increases the holding strength and breakage strength of the lock portion 130.

  In FIG. 2A to FIG. 3B, a press restricting portion 114 that is a protrusion that restricts the rotation of the lock portion 130 during a pressing operation is formed at a position overlapping the pressing portion 132 of the cable housing portion 110. . Thereby, excessive rotation of the lock part 130 is restricted, and damage to the connector fitting lock structure is prevented. In this embodiment, the pressing restriction portion 114 is formed as two triangular projections that overlap the pressing portion 132, but is not limited to this shape, and restricts the rotation of the lock portion 130 during a pressing operation. Any shape can be used.

  In FIG. 2A to FIG. 3B, the lock socket 130 is provided on the side facing the engagement protrusion 131 on the tip side toward the side facing the engagement protrusion 131, and the connector socket 200. A misinsertion preventing portion 134 for preventing misinsertion into is formed. The function of the erroneous insertion prevention unit 134 will be described with reference to FIGS. 11 (a) to 12 (b).

  FIG. 11A is a rear view showing a state in which the flat cable connector plug 100, the connector socket 200, and the flat cable 10 according to the present invention are fitted, and FIG. 12A is a cross-sectional view taken along line XIb-XIb, FIG. 12A is an enlarged top perspective view showing the XIIa portion of FIG. 4, and FIG. FIG.

  As shown in FIGS. 11A to 12B, when the connector plug 100 is inserted into the connector socket 200, the connector plug 100 is erroneously inserted into another position as shown in FIG. If the insertion is to be performed in the opposite direction, the erroneous insertion prevention part 134 formed at the tip of the lock part 130 and the protrusion formed on the side where the connector plug 100 is inserted into the housing 203 of the connector socket 200. The part 204 prevents erroneous insertion. As described above, the guide part 121 also has a reverse pointing prevention function.

  13A is a front view of the conventional flat cable connector plug 1300 as viewed from the connector insertion port side, and FIG. 13B is a view of the flat cable connector plug 100 of the present invention as viewed from the connector insertion port side. It is a front view.

  As shown in FIG. 13 (a), in the conventional adhesive-type connector plug 1300, the center lock spring is formed from the central flat plate portion. For this reason, the fitting reference surface and the cable pressing surface shown in FIG. 13 (a) are bent, thereby causing the bonding surface to be bent inward, causing problems in the FFC insertion property, and warping in the fitting portion. Will occur. On the other hand, the connectorless connector plug 100 of the present invention has a three-layer structure of the lock joint portion, the fitting reference surface, and the cable pressing surface shown in FIG. The fitting reference surface, which is a flat plate portion, has a shape that is evenly pulled from both sides, and no warpage occurs. For this reason, it is possible to improve warpage of the fitting reference surface.

  As described above, according to the flat cable connector plug of the present invention, a one-piece structure connector plug is adopted, and it is possible to reduce the number of assembly steps and improve the yield, which has been a problem of the conventional flat cable connector plug. It can be.

10, 10 ′ flat cable 11, 11 ′ contact portion 12, 12 ′ notch shape 100, 900, 1000 connector plug 110, 910, 1010 cable housing portion 111, 1011 cable insertion port 112, 912, 1012 cable lock portion 113 rectangular 114-shaped projection part 114 Pressing restriction part 115 Rotating shaft projection part 116 Lock part holding part 120, 920, 1020 Socket insertion part 121 Guide part 130, 930, 1030 Lock part 131 Engaging projection part 132 Press part 133 Lock part spring part 134 Incorrect Insertion prevention part 135 Opening part 200 Connector socket 201 Contact terminal 202 Fixing metal fitting 203 Housing 204 Protruding part 205 Fitting part

Claims (6)

A flat cable connector plug for connecting a flat cable to a connector socket,
A cable insertion port provided on the rear end side facing the front end side which is the side to be inserted into the connector socket of the connector plug, and into which the flat cable having a cutout shape is inserted on both sides near the front end, and insertion The cable lock portion is provided on the exposed side of the flat cable, and engages with a notch shape provided in the flat cable when the flat cable is inserted to a normal position, and the flat cable is held. A cable housing having
A socket insertion portion that is provided on the distal end side and guides the flat cable inserted to the regular position to the connector socket;
A pressing portion supported movably through a lock spring portion formed integrally with the outer peripheral portion of the cable housing portion, and formed integrally with the pressing portion and removable from the fitting portion of the connector socket A lock portion having an engaging protrusion to be engaged;
A flat cable connector plug , comprising: a lock portion holding portion that engages with a periphery of an opening portion of the lock portion when the lock portion is attached to and detached from the fitting portion of the connector socket . The protrusion part provided in the position which overlaps with the said press part of the said cable accommodating part, Comprising: The press restriction | limiting part which restrict | limits rotation of the said lock part at the time of operation of the said press part is further provided. Connector plug for flat cable as described in 1. A protrusion provided on the distal end side of the lock portion facing the engaging protrusion, and further comprising an erroneous insertion preventing portion for preventing erroneous insertion into the connector socket. The flat cable connector plug according to claim 1. 2. The flat cable according to claim 1, wherein the cable lock portion is provided in the vicinity of both side surfaces of the cable housing portion and has a notch shape having a spring property and facing in the direction of both side surfaces . Connector plug. 2. The flat cable connector according to claim 1, wherein the cable lock portion is provided in the vicinity of both side surfaces of the cable housing portion and is formed in a cutout shape having a spring property and facing in a distal direction. plug. The cable lock portion is formed to have a spring property so that when the cable insertion port of the cable housing portion opens in both lateral directions and the flat cable is inserted to a normal position , the cable lock portion returns to the original position. The flat cable connector plug according to claim 1.