JP4735285B2 - connector - Google Patents

Description

  The present invention relates to a connector for connecting a flexible printed circuit board (hereinafter referred to as FPC) and a hard circuit board used in a mobile phone, a notebook computer, a digital camera, and the like.

  Thin and high-density connections are possible for electrical connections between hard boards and other wiring boards and components used in electronic devices such as mobile phones, personal computers, digital cameras, and thin displays that are becoming smaller and lighter. Many flexible printed boards (hereinafter referred to as FPC) are used. A conventional method of connecting the FPC to the hard board has been performed using a connector called an FPC connector. This FPC connector includes a housing, a contact, and a slider. There is a ZIF (Zero Insertion Force) structure in which the FPC is inserted into the housing, and then the slider is inserted to press the FPC against the contact. The contact part which contacts, the connection part connected to a hard board | substrate, etc., and the fixing | fixed part fixed to a housing are provided, and it is being fixed to the housing by press-fit etc. In narrowing the pitch in such a connector, it is necessary to narrow the contacts fixed to the housing. However, since the housing into which the contacts are press-fitted uses an electrically insulating plastic material, there is a limit to miniaturization due to workability and strength, so it is difficult to narrow the pitch. Since a minimum thickness is required, it is difficult to reduce the height.

  In such a conventional FPC connection connector, as shown in Patent Documents 1 and 2, assuming that a narrow pitch and a low profile are achieved, a receiving member is arranged on the hard substrate and is placed on the contact portion of the FPC. A connector for connecting a FPC and a hard board by providing a bump contact, disposing an elastic body on the opposite side of the bump contact, and engaging a pressing member for pressing the FPC and the elastic body with a receiving member is known. Yes.

  However, in the connectors disclosed in Patent Documents 1 and 2, in order to ensure contact reliability, a bump contact must be provided on the FPC on the user side who performs the FPC connection work, and user convenience is not preferable. It was. In addition, since the FPC holding member can be pressed only on both sides because it is substantially U-shaped, it cannot cope with the warp that occurs in the middle part, and as a countermeasure for improving the rigidity against this warp, a double structure in which two parts are bonded together This increases the part processing cost. In addition, since there is no retaining means when the FPC is mounted, the FPC is easily detached from the connector by an external pulling force.

Moreover, as shown in Patent Document 3, in order to attach an FPC to a hard board, a plurality of attachment parts having a tab part fixed to the hard board and an engaging part engaging with a counterpart are provided. There is known a connector connection in which a mounting portion is connected to a unitary structure by a connecting portion. In this connector connection, similarly to the above, since the pressing member of the FPC is substantially U-shaped formed from both side surfaces, the fixing rib with the receiving member is provided at only two places on both sides, so that it is weak against warping. In order to achieve multi-core connection between the FPC and the hard board, it is necessary to provide a plurality of fixing ribs in the pitch direction of the FPC in order to suppress variations in the pressing force of the pressing member against warping. Space was required, resulting in a space loss of the substrate used.
JP 2005-11533 A JP 2004-296419 A JP 2004-327646 A

  The present invention has been made in order to solve the above-described problem, and is a pressing member having four side surfaces in a narrow pitch, low profile connector for connecting a flexible printed circuit board (hereinafter referred to as FPC) and a hard circuit board. Is fitted to a receiving member mounted on the hard board, the contact between the FPC and the hard board can be strengthened to make it difficult for the FPC to be pulled out. It is an object to provide a user-friendly connector that does not need to be provided.

In order to achieve the above object, a first aspect of the present invention is a connector for connecting a flexible printed circuit board (hereinafter referred to as FPC) and a hard board, and has a rectangular shape in which left and right sides are attached to the surface of the hard board. Corresponding to the receiving member having a frame shape and having a gap through which the FPC can be inserted from the side surface orthogonal to the both side directions with the both side portions fixed to the surface of the hard substrate. And a holding member attached to the receiving member from the upper surface side of the receiving member fixed to the hard substrate, and a side of the receiving member opposite to the hard substrate side of the FPC is disposed on the surface, pressing the FPC contact portion of the FPC in a state of being attached to a member subjected to the pressing member so as to be in contact with the substrate contact portion of the hard substrate and an insulating elastic body, said receiving member The fixed at a predetermined position of the hard substrate as FPC contact portion of the FPC to be inserted through the gap between the hard substrate and the receiving member and the substrate contact portion of the hard substrate overlap, the pressing member, wherein The FPC and the hard board are connected by being locked and attached to the receiving member .

  According to a second aspect of the present invention, in the connector according to the first aspect, the pressing member is attached to the inner surface side of the receiving member.

  According to a third aspect of the present invention, in the connector according to the first aspect, the insulating elastic body is provided with a protruding portion at a position corresponding to the FPC contact portion of the FPC.

  According to a fourth aspect of the present invention, in the connector according to the third aspect, a retaining rib corresponding to a retaining notch formed on both sides of the FPC is provided on both sides of the receiving member. is there.

  The invention according to claim 5 is the connector according to claim 1, further comprising an insulator sheet having a bump contact connected to the substrate contact portion at a position corresponding to the substrate contact portion of the hard substrate, and the FPC contact The portion is pressed against the bump contact.

  According to a sixth aspect of the present invention, in the connector according to the fifth aspect, retaining ribs corresponding to the retaining notches formed on both sides of the FPC are provided on both sides of the pressing member.

  According to the first aspect of the present invention, since the frame-shaped receiving member and the hook-shaped pressing member having four side surfaces are used, the rigidity as a connector can be increased as compared with a conventional U-shaped structure or the like. it can. As a result, the FPC can be strongly pressed, so that even if there is a warp, the pressing force of the FPC to the hard substrate can be increased and the FPC is difficult to come off. In addition, since the insulating elastic body is located on the inner surface of the frame-shaped receiving member having a side surface around it, the work of attaching the insulating elastic body and the pressing member to the receiving member becomes easy. Further, since it is not necessary to provide bump contacts on the FPC on the user side that performs FPC connection, it is convenient for the user side.

  According to the invention of claim 2, since the pressing member is housed in the receiving member and the receiving member and the pressing member do not overlap in the vertical direction, the thickness can be reduced.

  According to invention of Claim 3, it becomes easy to take the contact pressure of the FPC contact part of a flexible substrate, and the board | substrate contact part of a hard substrate reliably, and the connection reliability of a flexible substrate and a hard substrate improves.

  According to the fourth aspect of the present invention, in a state where the pressing member is locked to the receiving member, the retaining rib is located at the retaining notch of the FPC together with the force with which the FPC is pressed against the hard substrate by the retaining member. This makes it difficult to remove the FPC. Moreover, since the pressing member can be attached in a state where the FPC is temporarily fixed to the retaining rib, the pressing member can be easily engaged with the receiving member.

  According to the invention of claim 5, since the FPC and the hard substrate can be connected by the bump contact connected to the FPC contact portion of the FPC and the substrate contact portion of the hard substrate, the contact pressure by the bump contact is enhanced. The contact between the two is surely facilitated, and the connection reliability between the FPC and the hard substrate is improved.

  According to the sixth aspect of the present invention, the retaining rib is located in the retaining notch portion of the FPC together with the force with which the FPC is pressed against the hard substrate by the retaining member while the retaining member is locked to the receiving member. As a result, the FPC can be made more difficult to escape. Further, even if the FPC floats from the surface of the hard substrate due to the thickness of the bump contact, the retaining rib formed on the pressing member is located from the top of the FPC to the FPC retaining notch. FPC is difficult to come off.

  A connector according to a first embodiment of the present invention will be described below with reference to FIGS. The connector 1 of the present embodiment includes a hard board 2, a receiving member 3 on which the left and right side portions 32 are fixed to the hard board 2, an FPC 4 inserted into the receiving member 3 and connected to the hard board 2, and a pressing member. 6 is provided with an insulating elastic body 5 that presses the FPC 4 in a state of being attached to the receiving member 3, and a pressing member 6 that has a hook shape corresponding to the receiving member 3 and engages with the receiving member 3. .

  As shown in FIGS. 1 and 2, the hard substrate 2 is formed of a dielectric substrate 21, and the surface thereof is brought into contact with the joint surfaces 38 with the hard substrate 2 at both side portions 32 of the receiving member 3 by soldering. The bonding land 22 includes a wiring 23 and a contact pad 24 (substrate contact portion) connected to the FPC 4 provided at the tip of the wiring 23. The FPC 4 has a notch portion 41 for preventing slippage formed on both sides, a connection wiring 42, and an FPC contact portion 43 connected to the contact pad 24 of the hard substrate 2 at the tip of the wiring 42.

As shown in FIG. 4, the receiving member 3 is made of a rectangular frame-shaped metal material, is manufactured by bending four surfaces by sheet metal processing, and each pressing surface is used as a side surface to attach the pressing member 6. and a fixing means to engage more than one place on each side. Specifically, the receiving member 3 has a side surface portion 31 in the longitudinal direction and both side portions 32 in the short direction that are orthogonal to the side surface portion 31 and are fixed to the hard substrate 2. The side surface portion 31 includes side surfaces 31a and 31b that face each other, and two engaging portions 33 that engage with the engaging portions 63 of the pressing member 6 are provided on the respective side surfaces 31a and 31b. The side portions 32 are provided symmetrically to the left and right when the longitudinal direction is viewed from the front. The left and right side portions 32 are respectively provided with the inner side surface 34 and the outer side surface 35 that are perpendicular to the side surface portions 31 and parallel to each other. They are connected to each other by a connection surface 36 serving as a top surface. The inner side surface 34 is provided with an engagement claw 37 that engages with the engagement port 64 of the side surface 62 of the pressing member 6 inside the receiving member 3. Further, the both side portions 32 are provided with joint surfaces 38 that are bent at right angles from the side surface 35 to the outside of the receiving member 3 along the bottom surface side of the receiving member 3. The joining surface 38 is joined to the joining land 22 of the hard substrate 2 by soldering, whereby the receiving member 3 is fixed to the hard substrate 2 at the left and right side portions 32.

  At this time, between the receiving member 3 and the hard substrate 2, the FPC 4 can be inserted into at least the side surface 31 a side of the side surface portion 31 orthogonal to the both side portions 32 with both side portions 32 attached to the surface of the hard substrate 2. A gap d is formed. Further, the both side portions 32 are located on the same plane as the joining surface 38 from the central portion of the joining surface 38, protrude to the inner side of the receiving member 3, and are formed on both sides of the FPC 4 for retaining. A retaining rib 39 corresponding to the above is provided. In a state where the pressing member 6 is locked to the receiving member 3 by the rib 39, the FPC 4 is pressed against the hard substrate 2 by the pressing member 6, and the retaining rib is attached to the notch 41 for retaining the FP 4 C. By positioning 39, the FPC 4 is difficult to come off. Further, since the pressing member 6 can be attached in a state where the FPC 4 is temporarily fixed to the retaining rib 39, the pressing member 6 can be easily engaged with the receiving member 3.

  As shown in FIG. 3, the insulating elastic body 5 includes an insulating elastic sheet 51 having a rectangular shape substantially the same as the inner plane of the receiving member 3. The FPC contact portion 43 and the contact pad 24 are formed on the insulating elastic sheet 51. The protrusion 52 is provided at a position corresponding to the above. The insulating elastic body 5 is disposed on the surface of the receiving member 3 between the receiving member 3 and the pressing member 6 on the side opposite to the hard substrate 2 side of the FPC 4. In the attached state, the FPC contact portion 43 of the FPC 4 is pressed so as to contact the contact pad 24 of the hard substrate 2. As a result, the variation in the height of the contact surface in the contact between the contact pad 24 of the hard substrate 2 and the FPC contact portion 43 is absorbed, the required contact pressure is ensured, and the hard substrate 2 and the FPC 4 are securely connected.

  As shown in FIG. 2, the pressing member 6 is made of a rectangular saddle-shaped metal material, and is manufactured by bending four surfaces by sheet metal processing, similar to the receiving member 3 described above, with each bent surface as a side surface. Further, one or more fixed hand throws are provided on each side to increase the rigidity against warping. Specifically, the pressing member 6 has a bowl shape corresponding to the receiving member 3, and is attached to the inner surface side of the receiving member 3. On both side surfaces 61 in the longitudinal direction of the pressing member 6, two engaging portions 63 that engage with the engaging portions 33 of the receiving member 3 are respectively provided, and on both side surfaces 62 in the short side direction, receiving members are provided. Engagement openings 64 that engage with the three engagement claws 37 are provided. The pressing member 6 is attached to the inside from the upper surface side of the receiving member 3 in a state where the FPC 2 is inserted into the receiving member 3 attached to the hard substrate 2 and the insulating elastic body 5 is mounted. It is engaged and fixed at the engaging portion provided on each of the side surfaces.

  Next, a method for assembling the connector 1 in the present embodiment will be described with reference to FIGS. In this assembly, as shown in FIG. 4, first, the receiving member 3 is mounted on the hard substrate 2, and the bonding land 22 of the hard substrate 2 and the bonding surface 38 of the receiving member 3 are soldered and bonded. The receiving member 3 is fixed to the substrate 2. At this time, the positional relationship between the hard substrate 2 and the receiving member 3 is accurately set so that the FPC contact portion 43 of the FPC 4 to be inserted later and the contact pad 24 of the hard substrate 2 overlap each other. Fixed. In this fixed state, an insertion gap d into which the FPC can be inserted is formed between one side surface 31 a of both side surface portions 31 in the longitudinal direction of the receiving member 3 and the hard substrate 2. When the FPC 4 is inserted on the hard substrate 2 through the insertion gap d, the retaining rib 39 provided on the receiving member 3 fits into the retaining notch 41 provided on the FPC 4. It arrange | positions so that it may be located. Thereby, the FPC 4 can be temporarily fixed to the retaining rib 39.

  Next, as shown in FIG. 5, after inserting and mounting the FPC 4 on the receiving member 3 fixed to the hard substrate 2, first, the insulating elastic body 5 is formed from the upper surface side of the FPC 4 in the receiving member 3. The protrusion 52 is inserted and attached so as to come into contact with the FPC contact portion 43 of the FPC 4. Thereafter, the pressing member 6 is attached from above the insulating elastic body 5, and the engaging portion 63 and the engaging port 64 of the pressing member 6 are engaged with the engaging portion 33 and the engaging claw 37 of the receiving member 3, respectively. 6 (a) and 6 (b), the FPC contact portion 43 of the FPC 4 is pressed against and brought into contact with the contact pad 24 of the hard substrate 2 with the pressing member 6 attached to the receiving member 3. As described above, the thickness of the insulating elastic body 5 and the positional relationship between the engaging members of the pressing member 6 and the receiving member 3 are set optimally. As a result, the pressing member 6 is attached to the receiving member 3, so that the FPC contact portion 43 is brought into strong contact with the contact pad 24 on the hard substrate 2 by pressing from the protruding portion 52 of the insulating elastic body 5. 2 and the FPC 4 can be electrically connected reliably.

  Thus, according to the connector 1 according to the present embodiment, since the rectangular frame-shaped receiving member 3 and the hook-shaped pressing member 6 are used, the rigidity of the connector is enhanced by these shapes. It can be increased compared to a character-shaped structure. Therefore, since the FPC 4 can be strongly pressed by the pressing member 6 having four side surfaces, the pressing force of the FPC 4 against the hard substrate 2 can be increased, and even if there is a warp, the FPC 4 can be prevented from coming out by being pressed. Therefore, connection reliability can be improved. In addition, since the insulating elastic body 5 is located on the inner surface of the frame-shaped receiving member 3, the work of attaching the insulating elastic body 5 and the pressing member 6 to the receiving member 3 is facilitated. Furthermore, since the holding member 6 is housed in the receiving member 3, the receiving member 3 and the holding member 6 do not overlap in the vertical direction, so that a reduction in thickness and size can be achieved.

  Further, since the insulating elastic body 5 to be pressed is arranged on the entire surface of the FPC 4 and the four sides of the FPC 4 covered by the insulating elastic body 5 are pressed by the four side surfaces of the pressing member 6, the contact between the FPC contact portion 43 of the FPC 4 and the hard substrate 2. The contact pressure with the pad 24 can be reliably and firmly secured, and the connection reliability between the FPC 4 and the hard substrate 2 is further improved. Further, since the retaining ribs 39 of the receiving member 3 are disposed in the notch 41 for retaining the FP 4C, the FP 4C is held by the retaining member 6 when the retaining member 6 is locked to the receiving member 3. In addition to the force pressed against the hard substrate 2, the FPC 4 is further prevented from coming off due to the retaining action by the rib 39. Further, since the pressing member 6 can be attached in a state where the FPC 4 is temporarily stopped on the rib 39, the pressing member 6 can be easily engaged with the receiving member 3.

  Further, since no bump contact is required for the FPC 4, the user side can use the FPC 4 easily. Furthermore, since the pressing force of the pressing member 6 having four side surfaces is strong, it is possible to strongly suppress warping. Therefore, the pressing member 6 does not need to be doubled as in the prior art, and can be formed with one component, which is costly. Can be cheap.

  Next, a connector according to a second embodiment of the present invention will be described with reference to FIGS. The connector 1 of the present embodiment has conductive bumps 72 serving as bump contacts connected to the contact lands 24 at positions corresponding to the contact lands 24 (substrate contact portions) of the hard substrate 2 in the connection between the hard substrate 2 and the FPC 4. An insulating sheet 7 is further provided, and the hard substrate 2 and the FPC 4 are connected by pressing the conductive bumps 72 connected to the hard substrate 2 against the FPC contact portion 43 of the FPC 4.

  As shown in FIGS. 7 and 8, the connector 1 of the present embodiment includes a hard board 2, a receiving member 3 on which the left and right side portions 32 are fixed to the hard board 2, and a hard board inserted into the receiving member 3. 2, an insulating elastic body 5 that presses the FPC 4 in a state where the pressing member 6 is attached to the receiving member 3, and a hook shape corresponding to the receiving member 3, which is engaged with the receiving member 3. A pressing member 6 to be pressed, and an insulating sheet 7 having conductive bumps 72 (bump contacts) connected to the hard substrate 2. The insulator sheet 7 is mounted on the hard substrate 2, and the conductive bumps 72 are connected to the contact lands 24 of the hard substrate 2.

  The hard substrate 2 is formed of a dielectric substrate 21, and on its surface, a bonding land 22 that is in contact with a bonding surface 38 with the hard substrate 2 on both sides 32 of the receiving member 3 by soldering, a wiring 23, and a wiring 23 has a contact pad 24 (substrate contact portion) connected to the FPC 4 provided at the tip of 23. The FPC 4 has a notch portion 41 for preventing slipping formed on both sides, a wiring 42, and an FPC contact portion 43 corresponding to the contact pad 24 of the hard substrate 2 connected to the tip of the wiring 42.

  As shown in FIG. 8, the receiving member 3 basically has the same configuration as that of the first embodiment. However, the engagement claw 37 ( 2), and the difference is that two engagement holes 34a corresponding to the two engagement claws 65 provided on both side surfaces 62 of the pressing portion 6 are provided instead.

  The insulating elastic body 5 is composed of a flat insulating insulating sheet 51 having a rectangular shape substantially the same as the inner plane of the receiving member 3, and is disposed between the FPC 4 and the pressing member 6 in the receiving member 3. Then, in a state where the pressing member 6 is attached to the receiving member 3, the FPC 4 is pressed against the insulator sheet 7 side provided with the conductive bumps 72 connected to the contact pads 24 of the hard substrate 2. As a result, the conductive bumps 72 and the FPC contact portion 43 are brought into contact with each other, and variations in the heights of the contact surfaces are absorbed, and a required contact pressure is ensured to securely connect the hard substrate 2 and the FPC 4. . Further, on the side surface 53 in the short direction of the insulating elastic sheet 51, a notch 54 having substantially the same shape as the notch 41 is provided corresponding to the notch 41 for preventing the slippage formed on both sides of the FPC 4. ing. By providing this notch 54, the retaining rib 66 provided on the side surface 62 of the pressing member 6 passes through the notched opening 54 of the insulating elastic sheet 51 to the retaining notch 41 of the FPC 4. Be placed. Thereby, even if the FPC 4 floats away from the hard substrate 2, it can be locked.

  As shown in FIG. 8, the pressing member 6 has basically the same configuration as that of the first embodiment, but the left and right side surfaces 62 of the pressing member 6 have no engagement openings 64 (see FIG. 2), Corresponding to the engagement openings 34a of the both side portions 32 of the member 3, engagement claws 65 facing the outside of the pressing member 6 are provided at two locations. Further, corresponding to the notch portion 41 for retaining the FPC 4, there is a retaining rib 66 that bends inward from the upper portion of the side surface 62 provided on the side surface 62 of the pressing member 6. When the pressing member 6 is attached to the receiving member 3, the rib 66 is disposed corresponding to the notch 41 for preventing the FPC 4 from coming off, thereby making it difficult for the FPC 4 to be removed from the receiving member 3. it can. Further, since the rib 66 is arranged to extend from the upper part of the pressing member 6 to the lower FPC 4 side, even when the FPC 4 floats away from the hard board 2, the rib 66 has a notch 41 for preventing the FPC 4 from coming off. Since it fits in between, FPC4 can be prevented from coming off.

  As shown in FIG. 9, the insulating sheet 7 has an insulating sheet substrate 71 made of resin or the like, and this insulating sheet substrate 71 corresponds to the FPC contact portion 43 of the FPC 4 formed on the surface thereof. A conductive bump 72 and a through hole 73 connected to and adjacent to the conductive bump 72 and connected to the contact pad 24 (or the wiring 23) of the hard substrate 2 on the back surface are provided. The conductive bump 72 is pressed from the insulating elastic body 5 when the pressing member 6 and the receiving member 3 are attached, and presses the FPC contact portion 43 of the FPC 4 corresponding to the position of the conductive bump 72. Contact. Thereby, the FPC 4 and the hard substrate 2 are reliably brought into contact with each other.

Next, the assembly method of the connector 1 in this embodiment is demonstrated with reference to FIG. 10, FIG. In this assembly, as shown in FIG. 10, firstly, connected by soldering or the like the side of the rear face through the through hole 73 of the contact pads 24 (or wire 23) and the conductive bumps 72 of the insulator sheet 7 of the hard substrate 2 Is done. Next, the receiving member 3 is mounted on the hard substrate 2 to which the insulating sheet 7 is connected, and the bonding land 22 of the hard substrate 2 and the bonding surface 38 of the receiving member 3 are soldered and bonded to each other. The receiving member 3 is fixed to the head. At this time, the positional relationship between the insulating sheet 7 on the hard substrate 2 and the receiving member 3 is set to a predetermined position where the FPC contact portion 43 of the FPC 4 to be inserted later and the conductive bump 72 of the insulating sheet 7 overlap. The position is accurately set and fixed. In this fixed state, an insertion gap d into which the FPC can be inserted is formed between one side surface 31 a of both side surface portions 31 in the longitudinal direction of the receiving member 3 and the hard substrate 2. As a result, the FPC 4 is inserted on the hard substrate 2 through the insertion gap d.

  Next, as shown in FIG. 11, after inserting and mounting the FPC 4 on the receiving member 3 fixed to the hard substrate 2, first, the insulating elastic body 5 is formed from the upper surface side of the FPC 4 in the receiving member 3. The whole FPC 4 is covered from the back surface of the FPC contact portion 43 and attached so that the cutout portion 54 of the insulating elastic body 5 corresponds to the cutout portion 41 of the FPC4. Thereafter, the pressing member 6 is attached from above the insulating elastic body 5, and the engaging portion 63 and the engaging claw 65 of the pressing member 6 are engaged with the engaging portion 33 and the engaging port 34a of the receiving member 3, respectively. Further, the retaining rib 66 provided on the side surface 62 of the pressing member 6 is positioned in the notch 41 for retaining the FPC 4 so that the FPC 4 is hardly detached from the receiving member 3. Then, as shown in FIGS. 12A and 12B, the FPC contact portion 43 of the FPC 4 is connected to the conductivity of the insulator sheet 7 on the hard substrate 2 with the pressing member 6 attached to the receiving member 3. In order to be pressed against the bump 72, the thickness of the insulating elastic body 5, the height of the conductive bump 72, and the positional relationship between the portions where the pressing member 6 and the receiving member 3 are engaged are set optimally. By attaching the pressing member 6 to the receiving member 3 in this way, the FPC contact portion 43 is brought into strong contact with the conductive bumps 72 on the hard substrate 2 by pressing from the insulating elastic body 5, and the hard substrate 2 and the FPC 4 Can be electrically conducted reliably.

  As described above, according to the connector 1 according to the present embodiment, the insulator sheet 7 having the conductive bumps 72 connected to the contact pads 24 is mounted on the hard substrate 2 when the FPC 4 and the hard substrate 2 are connected. Thus, the FPC contact portion 43 of the FPC 4 and the contact land of the hard substrate 2 can be connected by the bump contact of the FPC contact portion and the conductive bump 72, so that the contact pressure is enhanced and the FPC 4 and the hard substrate 2 The contact between the FPC 4 and the hard board 2 is improved.

  Further, the pressing member 6 corresponds to the force with which the FPC 4 is pressed against the hard substrate 2 by the pressing member 6 in a state where the pressing member 6 is locked to the receiving member 3, and the notch 41 for preventing the FPC 4 from coming off. By providing the retaining rib 66, it is possible to make it difficult for the FPC 4 to be removed from the receiving member 3. Further, even if the FPC floats from the surface of the hard substrate 2 due to the thickness of the bumps of the conductive bumps 72, the retaining ribs 66 formed on the pressing member 6 are used to prevent the FPC from being detached from the upper part of the FPC 4. Since it is located in the notch, it is difficult to remove the FPC.

  According to the connector 1 which concerns on various embodiment mentioned above, in the connector 1 which connects FPC4 and the hard board | substrate 2, by the connector structure using the square frame-shaped receiving member 3 and the hook-shaped pressing member 6, The rigidity as a connector can be increased as compared with a conventional U-shaped structure or the like. Thereby, since the FPC 4 can be strongly pressed by the pressing member 6, the pressing force of the FPC 4 to the hard substrate 2 can be increased, and even if there is a warp, the FPC 4 can be made difficult to come off by being pressed. Connection reliability can be improved. In addition, since the insulating elastic body 5 is located on the inner surface of the frame-shaped receiving member 3, the work of attaching the insulating elastic body 5 and the pressing member 6 to the receiving member 3 is facilitated. Furthermore, since the holding member 6 is housed in the receiving member 3, the receiving member 3 and the holding member 6 do not overlap in the vertical direction, so that a reduction in height and a reduction in size can be achieved. .

  Further, by providing the receiving member or the pressing member with a retaining rib corresponding to the notch 41 for retaining the FPC 4 of the FPC, it is possible to further prevent the FPC from being pulled out and to improve the reliability. it can.

1 is an overall configuration diagram of a connector according to a first embodiment of the present invention. The exploded block diagram of the said connector. (A), (b) is the top view and side view of an insulation elastic body in the said connector. The figure explaining the assembly of the hard board | substrate in the said connector, a receiving member, and FPC. The figure explaining the assembly of the receiving member in the said connector, an insulation elastic body, and a pressing member. (A), (b) is sectional drawing of the longitudinal direction of FIG. 1, and a transversal direction. The whole block diagram of the nectar which concerns on the 2nd Embodiment of this invention. The exploded block diagram of the said connector. (A) is a block diagram of the insulator sheet in the connector, (b) is a side view in the longitudinal direction of (a), and (c) is a Y1-Y1 sectional view of (a). The figure explaining the assembly of the hard board | substrate in the said connector, a receiving member, an insulator sheet, and FPC. The figure explaining the assembly of the insulating elastic body and pressing member in the connector. (A), (b) is sectional drawing of the longitudinal direction of FIG. 7, and a transversal direction.

Explanation of symbols

1 Connector 2 Hard Board 3 Receiving Member 4 FPC (Flexible Board)
5 Insulation elastic body 6 Holding member 7 Insulator sheet 37 Rib (Rib for retaining)
41 Notch (Notch for retaining)
52 Protruding part 66 Rib (Rib for retaining)
72 Conductive bump (Bump contact)
d Insertion gap (gap)

Claims (6)

In a connector that connects a flexible printed circuit board (hereinafter referred to as FPC) and a hard circuit board,
The FPC has a quadrangular frame shape with left and right sides attached to the surface of the hard substrate, and the FPC from the side surface orthogonal to the both directions with the both sides fixed to the surface of the hard substrate. A receiving member having a gap through which can be inserted;
A holding member attached to the receiving member from the upper surface side of the receiving member fixed to the hard substrate in a bowl shape corresponding to the receiving member;
In the said receiving member, wherein the hard substrate side of the FPC disposed on the opposite side, the substrate of the pressing hard substrate FPC contact portion of the FPC in a state of being attached to a member receiving the member contact An insulating elastic body that is pressed so as to contact the part,
The receiving member is fixed at a predetermined position of the hard substrate so that an FPC contact portion of the FPC inserted through a gap between the hard substrate and the receiving member and a substrate contact portion of the hard substrate overlap with each other,
A connector characterized in that the FPC and the hard board are connected by locking the pressing member to the receiving member and attaching it.   The connector according to claim 1, wherein the pressing member is attached to an inner surface side of the receiving member.   The connector according to claim 1, wherein the insulating elastic body is provided with a protruding portion at a position corresponding to an FPC contact portion of the FPC.   The connector according to claim 3, wherein a retaining rib corresponding to a retaining notch formed on both sides of the FPC is provided on both sides of the receiving member. Further comprising an insulator sheet having a bump contact connected to the substrate contact portion at a position corresponding to the substrate contact portion of the hard substrate;
The connector according to claim 1, wherein the FPC contact portion is pressed against the bump contact.   The connector according to claim 5, wherein a retaining rib corresponding to a retaining notch formed on both sides of the FPC is provided on both sides of the pressing member.

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