JP2009277398A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a FPC connector with a back flip cover free from easy fall-off. <P>SOLUTION: The connector 10 includes a housing 2 having an opening 21 into which a FPC 1 is inserted, and a step 22, and the back flip cover 3 for opening/closing the step 22. The housing 2 has contacts 4, 5 alternately arranged. The contacts 4, 5 have fixed arms 41, 51, elastic arms 42, 52, connection legs 43, 53 connecting the fixed arms 41, 51 to the elastic arms 42, 52, and engaging arms 44, 54 extending in opposition to the elastic arms 42, 52, respectively. They also have first and second opposed arms 45, 55 opposed to the engaging arms 44, 54. The back flip cover 3 has cam portions 34, 35. A protruded portion 45b of the first contact 4 makes the cam portion 34 difficult to separate, and a hook portion 54a of the second contact 5 makes the second cam portion 35 difficult to separate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connector for connecting to a flat flexible cable such as FPC (Flexible Printed Circuit) or FFC (Flexible Flat Cable). The present specification generically refers to flat flexible cables as FPCs, and the present invention particularly relates to a so-called ZIF (Zero Insertion Force) type FPC connector that requires little force when an FPC is inserted or removed.

  Between recent electronic devices such as electronic component modules and printed boards mounted on portable information devices such as DVC (Digital Video Camera) and DSC (Digital Still Camera), mobile phones and PDAs (Personal Digital Assistance) For connection, FPC, which is a flat flexible cable, is used.

  An FPC connector that is surface-mounted on a printed circuit board, a so-called surface-mount type FPC connector, for example, is a housing in which an opening into which an FPC is inserted is formed, and the housing is mounted side by side at a predetermined pitch. Has multiple contacts. This FPC connector is provided with a back-lock type cover for closing the contact of the contact in order to bring the FPC into contact with these contacts.

  The FPC connector that is surface-mounted on a printed circuit board is required to have a low mounting height (to reduce the height) in order to increase the mounting density, and the contacts arranged in this surface-mounted FPC connector However, the number of pins and the pitch are being reduced. And the connector for FPC which enables such a low profile is invented (for example, refer patent document 1).

  An FPC connector according to Patent Document 1 has an insulating housing having an opening into which an FPC is inserted at the front and a step with an upper surface opened at the rear, a backlock type cover for opening and closing the step, and a housing And a plurality of bifurcated contacts arranged inside. A plurality of bifurcated contacts can be electrically connected to the FPC.

  This bifurcated contact consists of a strip-shaped base that is held in a housing and provides a connecting part, and a contact part that consists of an upper arm and a lower arm, and the lower arm is connected to the base through the connecting part, and is arranged to be opened and closed in the opening. And a bifurcated engagement arm that protrudes on the opposite side to the upper arm of the contact portion and has a substantially U-shaped groove.

  In addition, the cover is arranged around a rotating shaft having both ends rotatably supported by both wings of the housing, a substantially square plate-shaped gripping portion integrally formed with the rotating shaft, and the rotating shaft. A first plate cam that is connected to the engaging arm to form a cam device. Further, the first plate cam includes a thickly contoured portion that pushes down one of the engagement arms, and a thinly contoured portion that faces one of the engagement arms.

  When the cover is opened, the thickly contoured portion pushes down one of the engagement arms, so that the upper arm is interlocked and displaced upward, and the contact portion can be opened. On the other hand, when the cover is closed, the thinly contoured portion faces one side of the engagement arm, so that the upper arm is returned in conjunction with it, and the contact portion can be returned to the closed state.

The connector for FPC according to Patent Document 1 provides a ZIF connector for FPC that can improve the durability of the contact and can reliably maintain the open / closed state of the backlock type cover.
JP 2005-108464 A

  In the FPC connector according to Patent Document 1, both wings of a rotating shaft provided on a back-lock (also referred to as a back flip type) cover are supported by a pair of reinforcing tabs. The pair of reinforcing tabs are soldered to the printed circuit board to reinforce the soldering strength of the connector.

  Here, if a back flip type FPC connector can be configured without using a pair of reinforcing tabs, the number of parts can be reduced, which contributes to cost reduction. Also, if a back flip type FPC connector can be configured without using a pair of reinforcing tabs, the lateral width of the housing can be reduced, that is, the area occupied by the printed circuit board can be reduced, and there is also a space for mounting other electronic components. It can be secured. So-called overpackaging of electronic components on a printed circuit board becomes possible.

  However, in recent years, FPC connectors are required to have an extremely low profile. For example, if the mounting height of the FPC connector on the printed circuit board is about 1.2 mm or less, there is a concern that the back-lip type cover will drop (separate) from the connector body. Therefore, there is a need for a low-profile FPC connector that does not easily drop the back-lip type cover from the connector body without using a pair of reinforcing tabs. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such a problem, and is a connector for an FPC in which a back-rip type cover does not easily fall off, and the center of rotation of the back-rip type cover can be rotated by both wings. It is an object of the present invention to provide a connector that does not require a pair of reinforcing tabs to be supported by the connector.

  In order to satisfy the above-mentioned object, the inventor has found that the back-lip type cover does not easily fall off by creatively devising the shapes of the first and second contacts arranged alternately in the housing. Based on this, the following new connector for FPC was invented.

  (1) A rectangular parallelepiped housing in which an opening for inserting an FPC is formed at one end and a step is formed at the other end; a rectangular plate-like back flip cover that covers the step of the housing so as to be openable and closable; The housing includes a first contact and a second contact that are alternately arranged in parallel, the first contact being fixed to the housing, and a first fixing arm. A first elastic arm facing one fixed arm; a first connecting leg connecting the first fixed arm and the base ends of the first elastic arm; and a step extending in a direction opposite to the first elastic arm. And a first opposing arm that extends in a direction opposite to the first fixed arm and faces the first engaging arm, and the second contact includes the housing. A second fixed arm fixed to the ring, a second elastic arm opposed to the second fixed arm, a second connecting leg connecting the base ends of the second fixed arm and the second elastic arm, and A second engagement arm extending in a direction opposite to the second elastic arm, and a second opposing arm extending in a direction opposite to the second fixed arm and facing the second engagement arm, The one opposing arm has a protrusion protruding toward the tip of the first engagement arm, and the second engagement arm has a flange on the tip side toward the bottom surface of the step of the housing, The back flip cover is provided between a first cam portion rotatably held between the first engagement arm and the first opposing arm, and between the second engagement arm and the bottom surface of the step. A second cam portion that is rotatably held, and the first cam portion When the back flip cover is closed, the first engagement arm is pushed to close the tip of the first elastic arm with respect to the first fixed arm, and when the back flip cover is opened, the first engagement arm A first cam surface that is spaced apart and opens the tip of the first elastic arm with respect to the first fixed arm is provided, and the second cam portion pushes the second engagement arm when the back flip cover is closed. When the front end portion of the second elastic arm is closed with respect to the second fixed arm and the back flip cover is opened, the front end portion of the second elastic arm is moved away from the second engaging arm and the second fixed arm. A connector that provides a second cam surface that opens against the first cam portion and prevents the first cam portion from being difficult to separate, and the flange portion to prevent the second cam portion from being difficult to separate.

  The connector according to the invention of (1) includes a rectangular parallelepiped housing and a rectangular plate-like back flip cover. The housing has an opening for inserting the FPC at one end and a step at the other end. The back flip cover covers the step of the housing so that it can be opened and closed. The housing includes first contacts and second contacts arranged alternately in parallel.

  The first contact has a first fixed arm, a first elastic arm, a first connecting leg, a first engagement arm, and a first opposing arm. The first fixed arm is fixed to the housing. The first elastic arm faces the first fixed arm. The 1st connection leg has connected the base ends of the 1st fixed arm and the 1st elastic arm. The first engagement arm extends in a direction opposite to the first elastic arm and protrudes to a step. The first opposing arm extends in a direction opposite to the first fixed arm and faces the first engagement arm.

  The second contact has a second fixed arm, a second elastic arm, a second connecting leg, a second engagement arm, and a second opposing arm. The second fixed arm is fixed to the housing. The second elastic arm faces the second fixed arm. The second connecting leg connects the base ends of the second fixed arm and the second elastic arm. The second engagement arm extends in a direction opposite to the second elastic arm. The second opposing arm extends in a direction opposite to the second fixed arm and faces the second engagement arm.

  The first opposing arm has a protrusion that protrudes toward the tip of the first engagement arm. Moreover, the 2nd engagement arm has the collar part which goes to the bottom face of the level | step difference of a housing in the front end side. The back flip cover has a first cam portion and a second cam portion. The first cam portion is rotatably held between the first engagement arm and the first opposing arm. The second cam portion is rotatably held between the second engagement arm and the bottom surface of the step.

  The first cam portion is provided with a first cam surface. When the back flip cover is closed, the first cam surface pushes the first engagement arm and closes the distal end portion of the first elastic arm with respect to the first fixed arm. On the other hand, when the back flip cover is opened, the first cam surface follows the first engagement arm and opens the tip of the first elastic arm with respect to the first fixed arm.

  The second cam portion has a second cam surface. When the back flip cover is closed, the second cam surface pushes the second engagement arm to close the distal end portion of the second elastic arm with respect to the second fixed arm. On the other hand, when the back flip cover is opened, the second cam surface follows the second engagement arm and opens the tip of the second elastic arm with respect to the second fixed arm.

  The protrusions prevent the first cam part from being difficult to separate, and the flanges prevent the second cam part from being difficult to separate.

  In general, in FPC, a copper foil serving as a conductor pattern is bonded to a base film formed of insulating polyester or polyimide. The conductor pattern is covered with an insulating film, but the conductor pattern is exposed at the end portion of the FPC so as to be in conductive contact with, for example, a contact provided in the connector. The FPC applied to the connector according to the present invention is preferably a single-sided FPC having a conductive pattern on one side of the base film, and the conductive pattern is exposed on one side of the base film at the end of the single-sided FPC.

  The housing may have an insulating property, and the insulating housing may be a housing made of a non-conductive material. For example, a synthetic resin is molded to form an insulating housing having a desired shape. Obtainable.

  The housing may have a rectangular opening at one end for insertion of the FPC, and the FPC is inserted into a closed recess having a thin rectangular parallelepiped shape. The FPC may be inserted from the opening side of the recess toward the stop wall, and a pair of opposed inner walls forming the recess guide the width direction of the FPC and are aligned with the plurality of first and second contacts. The The FPC inserted into the recess of the housing may stop by contacting the stop wall, and the insertion depth of the FPC is defined. A plurality of first and second connecting legs may be disposed on the stop wall, and the interelectrode wall is formed in a comb-like shape.

  In the recess of the housing, the first fixed arm and the first elastic arm may be arranged to face each other, the second fixed arm and the second elastic arm may be arranged to face each other, and the back flip cover is opened as will be described later. Then, the first fixed arm and the first elastic arm may be opened, the second fixed arm and the second elastic arm may be opened, and this connector requires little force when inserting and removing the FPC from the opening. Configure the connector.

  The back flip cover may have an insulating property, and the insulating back flip cover may be a back flip cover made of a non-conductive material. For example, a synthetic resin is molded to have a desired shape. Insulating back flip cover can be obtained.

  The back flip cover covers the step so that the step can be opened and closed. The back flip cover covering the step may be opened so that the FPC can be inserted, and the plurality of first and second contacts and the FPC are in conductive contact. Means to close and cover the step. In order to maintain the closed posture when the cover housing is closed, this connector may be provided with a locking mechanism.

  A plurality of vertically long first rectangular grooves (slits) may be formed in the housing from the step at the other end toward the opening at the one end, and the first rectangular groove has a first shape. Contacts are placed. Further, a plurality of vertically long second rectangular grooves (slits) may be formed from the opening at one end to the step at the other end in the shape of a comb, and from the step at the other end to one end A vertically long third rectangular groove (slit) formed toward the opening of the portion may communicate with the second rectangular groove, and the second contact is disposed in the second rectangular groove. The first contacts and the second contacts are alternately arranged in parallel.

  For example, in order to facilitate the insertion of the first and second contacts, the vertically elongated first and second rectangular grooves may be formed with chamfers that are slightly inclined toward the insertion side. The thickness of the first and second contacts may be slightly larger than the thickness of the first and second contacts, and the portions excluding the first and second fixed arms may be disposed to be tiltable on the housing. Barbs may be formed at the insertion ends of the first and second contacts, and the barbs are press-fitted so as to bite into the ends of the first and second rectangular grooves.

  The first and second contacts may have electrical continuity, and the conductive contact may be a contact made of a conductive material. For example, a copper alloy plate is precisely stamped to obtain a desired contact. Shaped contacts can be obtained. However, the first and second contacts are not limited to a copper alloy.

  The first and second fixed arms and the first and second elastic arms may be so-called tuning fork-shaped contacts that apply contact force in the direction facing each other by the two arms, and the tuning fork-shaped contacts are bifurcated. Also called a contact. The first and second fixed arms and the first and second elastic arms may be provided with protrusions facing each other, and an FPC is sandwiched between these protrusions so that contact force can be applied. And any one protrusion can be made into the contact which connects FPC.

  The first engagement arm may protrude in a step shape in a cantilevered manner in a direction opposite to the first elastic arm, and the first cam portion of the back flip cover has a substantially right triangular shape with corners formed by arcs. The first plate cam may be a one-plate cam. The first plate cam pushes the first engagement arm when the back flip cover is closed, and the first cam surface (contour) that the first engagement arm follows when the back flip cover is opened. Is provided.

  Here, the first engagement arm and the first cam portion of the back flip cover are so-called rocking arms in which the first engagement arm serving as the follower swings following the contour of the first plate cam serving as the cam. A cam device (planar cam) is configured.

  The second engagement arm may protrude in a step shape in a cantilevered manner in a direction opposite to the second elastic arm, and the second cam portion of the back flip cover has a substantially right triangle shape with a corner formed by an arc. The second plate cam may be a two-plate cam. The second plate cam pushes the second engagement arm when the back flip cover is closed, and the second cam surface (contour) that the second engagement arm follows when the back flip cover is opened. Is provided.

  Here, the second engagement arm and the second cam portion of the back flip cover are so-called rocking arms in which the second engagement arm as the follower swings following the contour of the second plate cam as the cam. A cam device (planar cam) is configured.

  The first and second cams of the back flip cover may have a virtual center of rotation, and when the back flip cover is opened, the first and second cam surfaces follow the elastic return of the first and second engagement arms. Thus, the distal ends of the first and second elastic arms are opened with respect to the first and second fixed arms. And FPC can be inserted without load.

  When the back flip cover is closed, the first and second cam surfaces can push the first and second engaging arms to tilt the first and second elastic arms. That is, the first and second connecting legs are elastically deformed, and the tip portions of the first and second elastic arms can be closed with respect to the first and second fixed arms. And FPC can be clamped.

  Here, the first and second elastic arms and the first and second engaging arms may be integrally inclined, the first and second connecting legs may be used as fulcrums, and the first and second engaging arms may be used as power points. The tip portions of the first and second elastic arms can be used as the action points. When the back flip cover is opened, the first and second connecting legs are elastically restored, and the tip portions of the first and second elastic arms can be opened with respect to the first and second fixed arms. And FPC can be inserted without load.

  In the connector according to the invention of (1), since the virtual opening / closing shaft provided on the back flip cover is alternately held by the first contact and the second contact, the virtual opening / closing shaft is easy at the central portion in the axial direction. Does not elastically deform. That is, even if it is a multipolar connector, it is possible to provide a back flip type FPC connector in which the lock cover does not easily fall off.

  If the back flip cover is pulled in the centrifugal direction with the back flip cover open, the first and second cam portions come into contact with the first and second engagement arms, thereby preventing the back flip cover from being detached. When the back flip cover is pushed, the first and first cam portions abut against the first opposing arm and the bottom surface of the step to prevent the back flip cover from being detached.

  In the process of closing the back flip cover from the opened state, the protrusion prevents the first cam portion from being difficult to separate and the collar portion prevents the second cam portion from being difficult to separate, so that the back flip cover rotates. Only allowed. If the back flip cover is pulled in the centrifugal direction with the back flip cover closed, the protrusions prevent the first cam part from being difficult to separate, and the hooks prevent the second cam part from being difficult to separate. The flip cover is prevented from being removed.

  The connector according to the invention of (1) has a virtual opening / closing shaft in which the back flip cover is alternately held so as to be difficult to separate between the protrusion of the first contact and the flange of the second contact. In addition, it is possible to provide a connector that does not require a pair of reinforcing members that rotatably support both wings at the rotation center of the back flip cover.

  (2) The first fixed arm has a third elastic arm that faces the first elastic arm, and the second fixed arm has a fourth elastic arm that faces the second elastic arm (1). The connector described.

  In the connector according to the invention of (2), a contact may be provided at the tip of the third elastic arm, a contact may be provided at the tip of the fourth elastic arm, and the third elastic arm or the fourth elastic arm is appropriately designed. Then, a predetermined contact pressure can be obtained.

  The connector according to the invention of (1) mainly provides a connector for a single-sided FPC in which the contacts provided at the tip portions of the first and second elastic arms are in contact with the conductor pattern of the FPC, whereas (2 The connector according to the invention of (1) can provide a connector for single-sided FPC in which the contacts provided at the tips of the third and fourth elastic arms contact the conductor pattern of the FPC. The movable contact provided at the tip of the third and fourth elastic arms can be a fixed contact that protrudes from the first and second fixed arms toward the tip of the first and second elastic arms. .

  (3) The first contact has a first lead portion that extends from the step of the housing in the FPC insertion direction and has a bottom surface soldered to a printed circuit board. The second contact is an opening of the housing. The connector according to (1) or (2), further including a second lead portion that extends in a direction opposite to the insertion direction of the FPC and has a bottom surface soldered to the printed circuit board.

  In the connector according to the invention of (3), the first contact has the first lead portion. The second contact has a second lead portion. The first lead portion extends from the step of the housing in the FPC insertion direction, and the bottom surface of the first lead portion is soldered to the printed circuit board. The second lead portion extends from the opening of the housing in the anti-insertion direction of the FPC, and the bottom surface of the second lead portion is soldered to the printed circuit board.

  The connector according to the invention of (3) realizes a printed circuit board connector in which the plurality of first and second lead portions are solder-bonded to the printed circuit board so that the connector is surface-mounted on the printed circuit board.

  In the connector according to the invention of (3), since the first lead portion and the second lead portion are dispersed in opposite directions, compared with the case where the first and second lead portions extend in one direction, The pitch between patterns connected to the first and second lead portions can be enlarged. This is particularly effective when the pitch between patterns is a narrow pitch of about 0.2 mm.

  (4) A rectangular parallelepiped housing in which an opening for inserting an FPC is formed at one end and a step is formed at the other end, and a rectangular plate-like back flip cover that covers the step of the housing so as to be openable and closable; A connector assembling method comprising first contacts and second contacts alternately arranged in parallel inside the housing, wherein the first contacts are fixed to the housing, A first elastic arm facing the first fixed arm; a first connecting leg connecting the first fixed arm and the base ends of the first elastic arm; and extending in a direction opposite to the first elastic arm, A first engaging arm protruding in a step, and a first opposing arm extending in a direction opposite to the first fixed arm and facing the first engaging arm, and the second contact is A second fixed arm fixed to the housing, a second elastic arm facing the second fixed arm, a second connecting leg connecting the base ends of the second fixed arm and the second elastic arm, A second engagement arm extending in a direction opposite to the second elastic arm, and a second opposing arm extending in a direction opposite to the second fixed arm and facing the second engagement arm, The first opposing arm has a protrusion protruding toward the tip of the first engagement arm, and the second engagement arm has a flange on the tip side toward the bottom surface of the step of the housing. The back flip cover is provided between a first cam portion rotatably held between the first engagement arm and the first opposing arm, and between the second engagement arm and a bottom surface of the step. A second cam portion rotatably held on the second cam portion, A first step of inserting one fixed arm from the step in a direction opposite to the insertion direction of the FPC and completely incorporating the first contact into the housing; and a direction of insertion of the FPC from the opening of the housing to the second opposing arm. A second step of temporarily inserting the second contact into the housing to the extent that the second engagement arm slightly protrudes into the step, and the back flip cover is open with respect to the housing A third step of engaging the first cam portion with the first contact by elastically deforming the first engagement arm while the first cam portion gets over the protrusion while maintaining The second contact is further inserted in the insertion direction of the FPC from the opening of the housing while the back flip cover is kept open. And a fourth step of engaging the second cam portion with the second contact by elastically deforming the second engagement arm and causing the collar portion to get over the second cam portion. .

  In the connector assembling method according to the invention of (4), the connector includes a rectangular parallelepiped housing, a rectangular plate-shaped back flip cover, and a plurality of first contacts and second contacts. The housing has an opening for inserting the FPC at one end and a step at the other end. The back flip cover covers the step of the housing so that it can be opened and closed. The first contacts and the second contacts are alternately arranged inside the housing.

  The first contact has a first fixed arm, a first elastic arm, a first connecting leg, a first engagement arm, and a first opposing arm. The first fixed arm is fixed to the housing. The first elastic arm faces the first fixed arm. The 1st connection leg has connected the base ends of the 1st fixed arm and the 1st elastic arm. The first engagement arm extends in a direction opposite to the first elastic arm and protrudes to a step. The first opposing arm extends in a direction opposite to the first fixed arm and faces the first engagement arm.

  The second contact has a second fixed arm, a second elastic arm, a second connecting leg, a second engagement arm, and a second opposing arm. The second fixed arm is fixed to the housing. The second elastic arm faces the second fixed arm. The second connecting leg connects the base ends of the second fixed arm and the second elastic arm. The second engagement arm extends in a direction opposite to the second elastic arm. The second opposing arm extends in a direction opposite to the second fixed arm and faces the second engagement arm.

  The first opposing arm has a protrusion that protrudes toward the tip of the first engagement arm. Moreover, the 2nd engagement arm has the collar part which goes to the bottom face of the level | step difference of a housing in the front end side. The back flip cover has a first cam portion and a second cam portion. The first cam portion is rotatably held between the first engagement arm and the second opposing arm. The second cam portion is rotatably held between the second engagement arm and the bottom surface of the step.

  The method for assembling the connector according to the invention of (4) includes the first to fourth steps. In the first step, the first fixed arm is inserted in the FPC anti-insertion direction from the step, and the first contact is completely incorporated into the housing. In the second step, the second opposing arm is inserted from the opening of the housing in the FPC insertion direction, and the second contact is temporarily inserted into the housing to such an extent that the second engagement arm slightly protrudes from the step.

  In the third step, while the back flip cover is kept open with respect to the housing, the first cam portion climbs over the protrusion and the first engagement arm is elastically deformed to connect the first cam portion to the first contact. Engage with. In the fourth step, the second contact arm is further inserted in the insertion direction of the FPC from the opening of the housing while the back flip cover is kept open with respect to the housing, and the second engagement arm is elastically deformed. The part gets over the second cam part and engages the second cam part with the second contact.

  The method for assembling the connector according to the invention of (4) easily assembles a connector having a virtual opening and closing shaft in which the back flip cover is alternately held between the protrusion of the first contact and the flange of the second contact so as to be difficult to separate. be able to. The connector assembly method according to the invention of (4) is applied to, for example, an automatic assembly machine.

  The connector according to the present invention has a virtual opening / closing shaft in which the back flip cover is held alternately between the protrusion of the first contact and the flange of the second contact so as to be difficult to separate from each other. It is possible to provide a connector that does not require a pair of reinforcing members that rotatably support both wings at the rotation center of the flip cover.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective external view showing an embodiment of an FPC connector (hereinafter abbreviated as “connector”) according to the present invention, and a state in which a back flip cover is opened is viewed from the opening side. FIG. 2 is a perspective external view showing the connector according to the embodiment, and the state where the back flip cover is opened is viewed from the step side. FIG. 3 is a perspective cross-sectional view of the connector according to the embodiment, in which the side surface of the first contact is a cross-section. FIG. 4 is a perspective sectional view of the connector according to the embodiment, and the side surface of the second contact is taken as a cross section.

  FIG. 5 is a perspective cross-sectional view of the connector according to the embodiment, and the side surface of the first contact is viewed from a different direction from FIG. 3. FIG. 6 is a perspective sectional view of the connector according to the embodiment, and the side surface of the second contact is viewed from a direction different from FIG. FIG. 7 is a perspective external view showing the connector according to the embodiment, and the state where the back flip cover is closed is viewed from the opening side. FIG. 8 is a perspective external view showing the connector according to the embodiment, and the state where the back flip cover is closed is viewed from the step side. FIG. 9 is a rear view of the connector according to the embodiment. FIG. 10 is a plan view of the connector according to the embodiment.

  FIG. 11 is a vertical cross-sectional view of the connector according to the embodiment, in which the back flip cover is opened with the side surface of the first contact taken as a cross section. FIG. 12 is a vertical cross-sectional view of the connector according to the embodiment, in which the back flip cover is opened with the side surface of the second contact taken as a cross-section.

  FIG. 13 is a longitudinal sectional view of the connector according to the embodiment, and is a state in which the back flip cover is closed with the side surface of the first contact taken as a cross section. FIG. 14 is a vertical cross-sectional view of the connector according to the embodiment, in which the side surface of the second contact is taken as a cross-section and the back flip cover is closed.

  FIG. 15 is a longitudinal sectional view of the connector according to the embodiment, and is a state in which the FPC is inserted and the back flip cover is closed with the side surface of the first contact taken as a cross section. FIG. 16 is a vertical cross-sectional view of the connector according to the embodiment, in which the side surface of the second contact is taken as a cross-section and the FPC is inserted and the back flip cover is closed.

  FIG. 17 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram of the first step in which the first contact is completely inserted. FIG. 18 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram of the second step in which the second contact is temporarily inserted. FIG. 19 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram before the third step of engaging the first cam portion with the first contact. FIG. 20 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram before the third step of engaging the first cam portion with the first contact.

  First, the configuration of the connector according to the present invention will be described. 1 to 10, the connector 10 includes a rectangular parallelepiped housing 2 and a rectangular plate-like back flip cover (hereinafter abbreviated as a cover) 3. The housing 2 has an opening 21 into which the FPC 1 is inserted at one end, and a step 22 at the other end. The housing 2 includes first contacts 4 and second contacts 5 that are alternately arranged in parallel.

  The first contact 4 includes a first fixed arm 41, a first elastic arm 42, a first connecting leg 43, a first engagement arm 44, and a first opposing arm 45. The first fixed arm 41 is fixed to the housing 2. The first elastic arm 42 faces the first fixed arm 41. The first connecting legs 43 connect the base ends of the first fixed arm 41 and the first elastic arm 42. The first engagement arm 44 extends in a direction opposite to the first elastic arm 42. The first opposing arm 45 extends in a direction opposite to the first fixed arm 41 and faces the first engaging arm 44.

  The second contact 5 includes a second fixed arm 51, a second elastic arm 52, a second connecting leg 53, a second engagement arm 54, and a second opposing arm 55. The second fixed arm 51 is fixed to the housing 2. The second elastic arm 52 faces the second fixed arm 51. The second connecting leg 53 connects the base ends of the second fixed arm 51 and the second elastic arm 52. The second engagement arm 54 extends in a direction opposite to the second elastic arm 52. The second opposing arm 55 extends in a direction opposite to the second fixed arm 51 and faces the second engagement arm 54.

  The first opposing arm 45 has a protrusion 45 b that protrudes toward the tip of the first engagement arm 44. The second engagement arm 54 has a flange portion 54 a on the distal end side that faces the bottom surface 22 a of the step 22 of the housing 2.

  The cover 3 has a first cam portion 34 and a second cam portion 35. The first cam portion 34 is rotatably held between the first engagement arm 44 and the second opposing arm 45. The second cam portion 35 is rotatably held between the second engagement arm 44 and the bottom surface 22 a of the step 22.

  As shown in FIG. 3, a plurality of vertically long first rectangular grooves (slits) s <b> 1 are formed in a comb-like shape from the step 22 toward the opening 21 in the housing 2. The first contact 4 is disposed in the first rectangular groove s1.

  On the other hand, as shown in FIG. 4, a plurality of vertically long second rectangular grooves (slits) s <b> 2 are formed in the housing 2 from the opening 21 toward the step 22. In the housing 2, a plurality of vertically long third rectangular grooves (slits) s <b> 3 are formed in a comb tooth shape from the step 22 toward the opening 21. The third rectangular groove s3 communicates with the second rectangular groove s2. The second contact 5 is disposed in the second rectangular groove s2.

  Further, as shown in FIG. 5, the cover 3 is formed with a slit-shaped first opening 31 s. The first engagement arm 44 is inserted into the first opening 31s. And the 1st cam part 34 is formed in the edge part of the cover 3 which forms 31s of 1st opening (refer FIG. 11). As shown in FIG. 11, the first cam portion 34 is rotatably held between the first engagement arm 44 and the second opposing arm 55.

  On the other hand, as shown in FIG. 5, the cover 3 is formed with a slit-shaped second opening 32 s. The second engagement arm 54 is inserted into the second opening 32s. And the 2nd cam part 35 is formed in the edge part of the cover 3 which forms the 2nd opening 32s (refer FIG. 12). As shown in FIG. 12, the second cam portion 35 is rotatably held between the second engagement arm 54 and the bottom surface 22 a of the step 22.

  The housing 2 has a rectangular opening 21 at one end for inserting the FPC 1. Then, the FPC 1 is inserted into the closed concave portion 23 having a thin rectangular parallelepiped shape. The FPC 1 is inserted from the opening 21 side of the recess 23 toward the stop wall 24 (see FIGS. 11 and 12). As shown in FIG. 1, a cutout is provided in the opening 21 to facilitate the insertion of the FPC 1.

  A pair of opposing inner walls forming the recess 23 guide the width direction of the FPC 1 and are aligned with the first and second contacts 4 and 5. The FPC 1 inserted into the concave portion 23 of the housing 2 may come into contact with the stop wall 24 and stop, and the insertion depth of the FPC 1 is defined. A plurality of first connecting legs 43 and second connecting legs 53 are arranged on the stop wall 24, and an interelectrode wall is formed in a comb-like shape (see FIGS. 11 and 12).

  11 and 12, the third elastic arm 46 and the first elastic arm 42 provided on the first fixed arm 41 are arranged to face each other. Further, the fourth elastic arm 56 and the second elastic arm 52 provided on the second fixed arm 51 are disposed to face each other. When the cover 3 is opened, the first elastic arm 42 is open with respect to the third elastic arm 46, and the second elastic arm 52 is open with respect to the fourth elastic arm 56. The connector 10 constitutes a ZIF connector that requires little force when the FPC 1 is inserted into and removed from the opening 21 (see FIG. 1).

  1 to 6, the first contact 4 is press-fitted into the first rectangular groove s <b> 1 from the step 22 toward the opening 21 in the housing 2. On the other hand, the second contact 5 is press-fitted into the second rectangular groove s <b> 2 from the opening 21 toward the step 22 in the housing 2. The first contacts 4 and the second contacts 5 are alternately arranged in parallel.

  1 to 6, the first rectangular groove s1 and the second rectangular groove s2 are formed with chamfers slightly inclined on the insertion side in order to facilitate the insertion of the first contact 4 and the second contact 5. Yes. The width of the rectangular groove after chamfering is slightly wider than the plate thickness of the first contact 4 and the second contact 5, and the portion excluding the first fixed arm 41 and the second fixed arm 51 can be tilted to the housing 2. Is retained.

  In FIG. 3, a barb 41 v is formed at the tip of the first fixed arm 41. The barb 41v is press-fitted so as to bite into the end of the first rectangular groove s1. In FIG. 4, a barb 51 v (see FIG. 4) is formed at the tip of the second opposing arm 55. The barb 51v is press-fitted so as to bite into the start end of the third rectangular groove s3.

  3 or 4, the first fixed arm 41 and the first opposing arm 45 are locked to the bottom of the housing 2. The second fixed arm 51 and the second opposing arm 55 are locked to the bottom of the housing 2. Thus, both ends of the first fixed arm 41 and the second fixed arm 51 are fixed to the housing 2.

  As shown in FIG. 11 or FIG. 12, the third elastic arm 46 and the first elastic arm 42 are so-called tuning fork contacts in the form of a tuning fork that applies a contact force in a direction facing each other by the two arms. Yes. Similarly, the fourth elastic arm 56 and the second elastic arm 52 are so-called tuning fork-shaped contacts in the shape of a tuning fork that applies a contact force in a direction facing each other by the two arms.

  In FIG. 11 or FIG. 12, protrusions 42 s and 52 s serving as contact points are provided at the respective distal end portions of the first elastic arm 42 and the second elastic arm 52. Further, projections 46 s and 56 s serving as contact points are provided at the respective distal end portions of the third elastic arm 46 and the fourth elastic arm 56. The protrusion 42s and the protrusion 46s face each other. The protrusion 52s and the protrusion 56s face each other.

  As shown in FIG. 13, the first engagement arm 44 protrudes from the step 22 like a cantilever in a direction opposite to the first elastic arm 42. The first cam portion 34 is a substantially right triangle plate cam having corners formed by arcs. When the cover 3 is closed, the first cam portion 34 pushes the first engagement arm 44 away from the first opposing arm 45, and when the cover 3 is opened (see FIG. 11), the first engagement arm 44 follows. A first cam surface (outline) is provided.

  As shown in FIG. 14, the second engagement arm 54 protrudes into the step 22 like a cantilever in a direction opposite to the second elastic arm 52. The second cam portion 35 is a substantially right triangle plate cam having a corner formed by an arc. When the cover 3 is closed, the second cam portion 35 pushes the second engagement arm 54 in a direction away from the bottom surface 22a of the step 22, and when the cover 3 is opened (see FIG. 12), the second engagement arm 54 follows. A first cam surface (outline) is provided.

  1 to 4, the first opposing arm 45 has a first lead portion 45 a at the tip portion. The 2nd fixed arm 51 has the 2nd lead part 51a in the front-end | tip part. The first lead portion 45 a extends from the step 22 of the housing 2 in the insertion direction of the FPC 1. The bottom surface of the first lead portion 41a is soldered to the printed circuit board 1p. The second lead portion 51 a extends from the opening 21 of the housing 2 in the anti-insertion direction of the FPC 1. The bottom surface of the second lead portion 51a is soldered to the printed circuit board 1p. That is, the connector 10 realizes a printed circuit board connector that is surface-mounted on the printed circuit board 1p.

  Next, the operation and action of the connector according to the present invention will be described. 11 and 12, the cover 3 maintains the open posture. The first cam portion 34 of the cover 3 has a virtual rotation center Q. The second cam portion 35 of the cover 3 has a virtual rotation center R. The virtual rotation center Q and the virtual rotation center R may coincide with each other, and may slightly shift as the cover 3 rotates, and are in an independent relationship with each other.

  In FIG. 11, the short side of the first cam portion 34 is interposed between the first engagement arm 44 and the first opposing arm 45. When the cover 3 is closed, the long side of the first cam portion 34 is interposed between the first engagement arm 44 and the first opposing arm 45 with almost no change in the rotation center Q. (See FIG. 13). Therefore, the first cam portion 34 moves the first engagement arm 44 in a direction away from the first opposing arm 45 (see FIG. 13).

  Similarly, in FIG. 12, the short side of the second cam portion 35 is interposed between the second engagement arm 54 and the bottom surface 22 a of the step 22. When the cover 3 is closed, the long side of the second cam portion 35 is interposed between the second engagement arm 54 and the bottom surface 22a of the step 22 with almost no change in the rotation center R. (See FIG. 14). Therefore, the second cam portion 35 moves the second engagement arm 54 in a direction away from the bottom surface 22a of the step 22 (see FIG. 14).

  11 and 12, when the cover 3 is opened, the first and second cam surfaces follow the elastic return of the first engagement arm 44 and the second engagement arm 54, and the first elastic arm The distal ends of 42 and the second elastic arm 52 are open to the third elastic arm 46 and the fourth elastic arm 56. And FPC can be inserted without load.

  As shown in FIG. 13 and FIG. 14, when the cover 3 is closed, the first and second cam surfaces push the first engagement arm 44 and the second engagement arm 54 to cause the first elastic arm 42 and the second elastic arm. 52 can be tilted. That is, the first connecting leg 43 and the second connecting leg 53 are elastically deformed, and the distal ends of the first elastic arm 42 and the second elastic arm 52 are closed with respect to the third elastic arm 46 and the fourth elastic arm 56. Can do. And FPC1 can be clamped (refer FIG.15 and FIG.16).

  13 and 14, the first elastic arm 42 and the second elastic arm 52 and the first engagement arm 44 and the second engagement arm 54 may be integrally inclined, and the first connection leg 43 and the second connection leg. 53 may be used as a fulcrum, the first engagement arm 44 and the second engagement arm 54 may be used as a force point, and the tip portions of the first elastic arm 42 and the second elastic arm 52 may be used as action points. When the cover 3 is opened, the first connecting leg 43 and the second connecting leg 53 are elastically restored, and the distal ends of the first elastic arm 42 and the second elastic arm 52 are moved with respect to the third elastic arm 46 and the fourth elastic arm 56. Can be opened. And FPC1 can be inserted without load (refer FIG. 1).

  As described above, the connector 10 according to the embodiment of the present invention alternately holds the virtual opening / closing shaft provided on the cover 3 by the first contact 4 and the second contact 5. Does not easily elastically deform at the center of the direction. That is, even if it is a multipolar connector, it is possible to provide a back flip type FPC connector in which the cover does not easily fall off.

  11 and 12, when the cover 3 is pulled in the centrifugal direction with the cover 3 opened, the first cam portion 34 and the second cam portion 35 become the first engagement arm 44 and the second engagement arm. 54 is prevented from being detached. When the cover 3 is pushed, the first cam portion 34 and the second cam portion 35 come into contact with the first opposing arm 45 and the bottom surface 22a of the step 22 to prevent the cover 3 from being detached.

  In the process of closing the cover 3 from the opened state, the protrusion 45b prevents the first cam portion 34 from being difficult to separate, and the collar portion 54a prevents the second cam portion 35 from being difficult to separate, so the cover 3 rotates. Only exercise is allowed.

  As shown in FIGS. 15 and 16, when the cover 3 is pulled in the centrifugal direction with the cover 3 closed, the protrusion 45b prevents the first cam portion 34 from being difficult to separate, and the flange portion 54a. Prevents the second cam portion 35 from being separated easily, so that the cover 3 is prevented from being detached.

  As described above, the connector 10 according to the embodiment of the present invention has a virtual rotation shaft in which the cover 3 is held alternately by the protrusion 45b of the first contact 4 and the flange portion 54a of the second contact 5 so as to be difficult to separate. Since it has, the connector which does not require a pair of reinforcement member which supports both the wing | wings of the rotation center of a back flip cover so that rotation is possible conventionally can be provided.

  FIG. 15 is a state diagram in which the FPC 1 is inserted and the cover 3 is completely closed. In FIG. 15, when the FPC 1 is inserted between the third elastic arm 46 and the first elastic arm 42 and the cover 3 is closed, a force that rotates clockwise acts on the first elastic arm 42. Here, the shape of the first elastic arm 42 is determined so that the moment of inertia of the cross section gradually decreases from the base end portion toward the tip end portion. Therefore, the tip of the first elastic arm 42 is bent, and the protrusion 42s can apply a predetermined pressure (contact force) to the FPC 1.

  In FIG. 16, when the FPC 1 is inserted between the fourth elastic arm 56 and the second elastic arm 52 and the cover 3 is closed, a force that rotates clockwise acts on the second elastic arm 52. Here, the shape of the second elastic arm 52 is determined so that the moment of inertia of the cross section gradually decreases from the base end portion toward the tip end portion. Therefore, the tip of the second elastic arm 52 is bent, and the protrusion 52s can apply a predetermined pressure (contact force) to the FPC 1.

  15 and 16, either one of the protrusions 42 s and the protrusion 46 s may be a contact for connecting to the FPC 1, and one of the protrusion 52 s and the protrusion 56 s may be a contact for connecting to the FPC 1. For example, the protrusions 42s and the protrusions 52s may be contact points, the connector 10 may be a single-sided FPC connector, the protrusions 46s and the protrusions 56s may be contact points, and the connector 10 may be a single-sided FPC connector.

  In the connector according to the present invention, the virtual opening / closing axis of the back flip cover is alternately held by the first engagement arm of the first contact and the second engagement arm of the second contact, so the virtual opening / closing axis is the axis. Does not easily elastically deform at the center of the direction. That is, even if it is a multipolar connector, it is possible to provide a back flip type FPC connector in which the lock cover does not easily fall off.

  In addition, the connector according to the present invention has a virtual pivot shaft in which the back flip cover is alternately held by the protrusions of the first contacts and the flanges of the second contacts. It is possible to provide a connector that does not require a pair of reinforcing members that rotatably support both wings at the rotation center of the cover.

  Furthermore, the connector according to the present invention realizes a printed circuit board connector in which the plurality of first and second lead portions are solder-bonded to the printed circuit board so that the connector is surface-mounted on the printed circuit board.

  Next, a method for assembling the connector 10 configured as described above will be described. The connector 10 is assembled in the procedure including the following first step K1 to fourth step K4.

  First, in FIG. 17, the first fixed arm 41 is inserted from the step 22 in the anti-insertion direction of the FPC 1, and the plurality of first contacts 4 are completely assembled into the housing 2 (first step K1). In the first step K1, the first contact 4 is press-fitted into the first rectangular groove s1 from the step 22 side toward the opening 21 (see FIG. 3).

  Next, as shown in FIG. 18, the second opposing arm 55 is inserted in the insertion direction of the FPC 1 from the opening 21 of the housing 2, and the second engagement arm 54 is protruded slightly to the step 22. The contact 5 is temporarily inserted into the housing 2 (second step K2).

  Next, in FIG. 19, when the cover 3 is moved while the cover 3 is kept open with respect to the housing 2, the first cam portion 34 gets over the protrusion 45 b and the first engagement arm 44 is elastically deformed. Then, as shown in FIG. 20, the first cam portion 34 is engaged with the first contact 4 (third step K3).

  From the state of the third step K3 shown in FIG. 20, the second contact 5 is further inserted in the insertion direction of the FPC 1 from the opening 21 of the housing 2 while maintaining the state in which the cover 3 is open with respect to the housing 2 ( Fourth step K4). In the fourth step K4, the second engagement arm 54 is elastically deformed so that the flange portion 54a gets over the second cam portion 35 and engages the second cam portion 35 with the second contact 5 (see FIG. 12).

  The connector 10 assembled in this manner includes the connector 10 having a virtual rotation shaft in which the cover 3 is held alternately by the protrusion 45b of the first contact 4 and the flange 54a of the second contact 5 so as to be difficult to separate. Can be easily assembled.

1 is a perspective external view showing an embodiment of an FPC connector according to the present invention, in which a state where a back flip cover is opened is viewed from an opening side. It is a perspective appearance figure showing the connector by the above-mentioned embodiment, and sees the state where the back flip cover was opened from the level difference side. It is a perspective sectional view of the connector by the above-mentioned embodiment, and makes the side of the 1st contact into a section. It is a perspective sectional view of the connector by the above-mentioned embodiment, and makes the side of the 2nd contact into a section. FIG. 4 is a perspective cross-sectional view of the connector according to the embodiment, and the side surface of the first contact is viewed from a direction different from FIG. 3. FIG. 6 is a perspective sectional view of the connector according to the embodiment, and the side surface of the second contact is viewed from a direction different from FIG. 4. It is a perspective appearance figure showing the connector by the above-mentioned embodiment, and sees the state where the back flip cover was closed from the opening side. It is a perspective appearance figure showing the connector by the above-mentioned embodiment, and sees the state where the back flip cover was closed from the level difference side. It is a rear view of the connector by the said embodiment. It is a top view of the connector by the embodiment. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, in which a back flip cover is opened with a side surface of a first contact as a cross section. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram in which a back flip cover is opened with a side surface of a second contact as a cross section. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, in which the back flip cover is closed with the side surface of the first contact taken as a cross section. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram in which a back flip cover is closed with a side surface of a second contact as a cross section. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, in which a side surface of a first contact is taken as a cross section and an FPC is inserted and a back flip cover is closed. FIG. 4 is a vertical cross-sectional view of the connector according to the embodiment, and is a state in which an FPC is inserted and a back flip cover is closed with a side surface of a second contact as a cross section. FIG. 4 is a longitudinal sectional view of the connector according to the embodiment, and is a state diagram of a first step in which a first contact is completely inserted. It is a longitudinal cross-sectional view of the connector by the said embodiment, and is a state figure of the 2nd process in which the 2nd contact was temporarily inserted. It is a longitudinal cross-sectional view of the connector by the said embodiment, and is a state figure before the 3rd process of engaging a 1st cam part with a 1st contact. It is a longitudinal cross-sectional view of the connector by the said embodiment, and is a state figure before the 3rd process of engaging a 1st cam part with a 1st contact.

Explanation of symbols

1 FPC
2 Housing 3 Back flip cover (cover)
4 First Contact 5 Second Contact 10 Connector 21 Opening 22 Step 22a Bottom of Step 34 First Cam Part 35 Second Cam Part 41/51 First and Second Fixed Arms 42/52 First and Second Elastic Arms 43 / 53 1st and 2nd connection leg 44 * 54 1st and 2nd engagement arm 45 * 55 1st and 2nd opposing arm 45b Protrusion part 54a collar part

Claims (4)

A connector comprising a rectangular parallelepiped housing in which an opening for inserting an FPC is formed at one end and a step is formed at the other end, and a rectangular plate-like back flip cover that covers the step of the housing so as to be opened and closed Because
The housing includes first contacts and second contacts alternately arranged in parallel,
The first contact connects a first fixed arm fixed to the housing, a first elastic arm opposed to the first fixed arm, and base ends of the first fixed arm and the first elastic arm. A first connecting leg, a first engagement arm that extends in a direction opposite to the first elastic arm and protrudes from the step, and a direction that opposes the first fixed arm and faces the first engagement arm A first opposing arm that
The second contact connects a second fixed arm fixed to the housing, a second elastic arm facing the second fixed arm, and base ends of the second fixed arm and the second elastic arm. A second coupling leg, a second engagement arm extending in a direction opposite to the second elastic arm, and a second opposing arm extending in a direction opposite to the second fixed arm and facing the second engagement arm. Have
The first opposing arm has a protrusion that protrudes toward the distal end of the first engagement arm,
The second engagement arm has a flange on the tip side toward the bottom surface of the step of the housing,
The back flip cover is provided between a first cam portion rotatably held between the first engagement arm and the first opposing arm, and between the second engagement arm and the bottom surface of the step. A second cam portion that is rotatably held,
The first cam portion pushes the first engagement arm when the back flip cover is closed, closes the tip end portion of the first elastic arm with respect to the first fixed arm, and opens the back flip cover when the back flip cover is opened. A first cam surface that follows the one engagement arm and opens the tip of the first elastic arm with respect to the first fixed arm;
The second cam portion pushes the second engagement arm when the back flip cover is closed, closes the tip of the second elastic arm with respect to the second fixed arm, and opens the back flip cover when the back flip cover is opened. A second cam surface that follows the two engagement arms and opens the tip of the second elastic arm with respect to the second fixed arm;
The connector in which the protrusion prevents the first cam portion from being difficult to separate, and the flange portion prevents the second cam portion from being difficult to separate.   2. The connector according to claim 1, wherein the first fixed arm has a third elastic arm facing the first elastic arm, and the second fixed arm has a fourth elastic arm facing the second elastic arm. . The first contact has a first lead portion that extends from the step of the housing in the FPC insertion direction and has a bottom surface that is soldered to a printed circuit board.
3. The connector according to claim 1, wherein the second contact has a second lead portion that extends from the opening of the housing in the anti-insertion direction of the FPC and has a bottom face soldered to the printed board. A rectangular parallelepiped housing having an opening for inserting an FPC at one end and a step at the other end;
A rectangular plate-shaped back flip cover that covers the step of the housing so that it can be opened and closed;
A method for assembling a connector comprising: first contacts and second contacts alternately arranged in parallel inside the housing,
The first contact connects a first fixed arm fixed to the housing, a first elastic arm opposed to the first fixed arm, and base ends of the first fixed arm and the first elastic arm. A first connecting leg, a first engagement arm that extends in a direction opposite to the first elastic arm and protrudes from the step, and a direction that opposes the first fixed arm and faces the first engagement arm A first opposing arm that
The second contact connects a second fixed arm fixed to the housing, a second elastic arm facing the second fixed arm, and base ends of the second fixed arm and the second elastic arm. A second coupling leg, a second engagement arm extending in a direction opposite to the second elastic arm, and a second opposing arm extending in a direction opposite to the second fixed arm and facing the second engagement arm. Have
The first opposing arm has a protrusion that protrudes toward the distal end of the first engagement arm,
The second engagement arm has a flange on the tip side toward the bottom surface of the step of the housing,
The back flip cover is provided between a first cam portion rotatably held between the first engagement arm and the first opposing arm, and between the second engagement arm and the bottom surface of the step. A second cam portion that is rotatably held,
A first step of inserting the first fixed arm from the step in the FPC anti-insertion direction and completely incorporating the first contact into the housing;
The second opposed arm is inserted in the insertion direction of the FPC from the opening of the housing, and the second contact is temporarily inserted into the housing to the extent that the second engagement arm slightly protrudes into the step. Process,
While maintaining the state where the back flip cover is open with respect to the housing, the first cam portion gets over the protrusion and elastically deforms the first engagement arm, so that the first cam portion is A third step of engaging one contact;
While the back flip cover is kept open with respect to the housing, the second contact is further inserted from the opening of the housing in the insertion direction of the FPC, and the second engagement arm is elastically deformed. And a fourth step of engaging the second cam portion with the second contact by the flange portion overcoming the second cam portion.

Images