JP7432840B2 - High frequency connector and flexible wiring board - Google Patents

Description

The present invention relates to a high frequency connector and a flexible wiring board.

In Patent Document 1, a contactor obtained by punching out a plate-shaped metal material is attached to a housing (see FIG. 3 of the same document).

Patent No. 3029985

In order to prevent the contact terminals of the connector from buckling when the substrate is moved relative to the connector and electrically and mechanically coupled, it is common to provide the contact terminals with guide slopes. However, if this guide slope functions as an open stub for the transmission line of the high-frequency signal transmitted via the contact terminal, the small impedance mismatch will affect the high-frequency band (30 GHz or higher), causing high-frequency This is not preferable because the transmission characteristics deteriorate. In light of such knowledge, the inventor of the present application has newly discovered the significance of providing a connector with improved high frequency transmission characteristics.

A high frequency connector according to one aspect of the present disclosure includes:
an insulator;
The insulator includes a plurality of contact terminals arranged in a predetermined direction, including a plurality of ground terminals and a plurality of signal terminals,
Each of the ground terminal and the signal terminal includes an arm portion supported in a cantilevered manner by the insulator, and the arm portion includes a contact portion and an inclined guide portion extending from the contact portion toward the arm tip side,
The length of the inclined guide portion at the signal terminal is shorter than the length of the inclined guide portion at the ground terminal.

In some embodiments, the length of the inclined guide portion of the signal terminal is 1/2 or less of the length of the inclined guide portion of the ground terminal.

In some embodiments, the contact portion of the signal terminal is offset toward the arm base end side from the contact portion of the ground terminal.

In some embodiments, the insulator has one or more guide protrusions provided further apart from the arm proximal end side than the inclined guide part,
The one or more guide protrusions are provided to correct warpage in the width direction of the flexible wiring board to be coupled to the high frequency connector.

In some embodiments, the one or more guide protrusions are provided so as to protrude in the same direction as the direction in which the contact portion protrudes convexly.

The plurality of contact terminals include a plurality of subsets including one or more ground terminals and one or more signal terminals,
The one or more guide protrusions include intermediate guide protrusions provided corresponding to intermediate regions between the adjacent subsets.

The one or more guide protrusions include at least three guide protrusions that are provided in correspondence with the center in the width direction and both ends in the width direction of the flexible wiring board.

A flexible wiring board according to one aspect of the present disclosure is a flexible wiring board to be coupled to any of the above-mentioned high frequency connectors, and includes one or more guide protrusions for avoiding interference with the one or more guide protrusions. It has an opening or a notch.

According to one aspect of the present disclosure, a connector with improved high frequency transmission characteristics can be provided.

FIG. 1 is a schematic exploded perspective view of a high frequency connector according to one aspect of the present disclosure. FIG. 1 is a schematic perspective view of a high frequency connector according to one aspect of the present disclosure, where the high frequency connector is perspectively viewed from the front side. FIG. 2 is a schematic perspective view of a high frequency connector according to one aspect of the present disclosure, where the high frequency connector is perspectively viewed from the rear side. FIG. 2 is a schematic top view of a high frequency connector according to one aspect of the present disclosure. FIG. 2 is a schematic front side view of a high frequency connector according to one aspect of the present disclosure. FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 5 of the high-frequency connector according to one aspect of the present disclosure, with the lock cover in a locked state. FIG. 6 is a schematic cross-sectional view taken along line VII-VII in FIG. 5 of the connector according to one aspect of the present disclosure, with the lock cover in an unlocked state. FIG. 3 is a schematic side view showing the positional relationship between a signal terminal and a ground terminal in a connector according to one aspect of the present disclosure. FIG. 3 is a schematic top view of a coupling end of a flexible wiring board coupled to a connector according to one aspect of the present disclosure. FIG. 10A shows a flexible wiring board in which the left and right centers are recessed relative to the left and right ends. FIG. 10(b) shows that the guide protrusion of the connector reduces warping of the flexible wiring board. FIG. 11(a) shows a flexible wiring board with the left and right centers protruding from the left and right ends. FIG. 11(b) shows that the guide protrusion of the connector reduces warping of the flexible wiring board. FIG. 7 is a schematic diagram showing that a flexible wiring board is inserted when the lock cover is in an unlocked state in a high frequency connector according to one aspect of the present disclosure. FIG. 3 is a schematic diagram showing that a flexible wiring board is guided by a guide slope of a ground terminal in a high frequency connector according to an aspect of the present disclosure. FIG. 7 is a schematic diagram showing that the lock cover is rotated from the unlocked state to the locked state and the flexible wiring board is sandwiched between the lock cover and the insulator in the high frequency connector according to one aspect of the present disclosure. FIG. 2 is a schematic diagram showing a state in which a flexible wiring board is sandwiched between a lock cover and an insulator in a high-frequency connector according to an aspect of the present disclosure, and pads of the flexible wiring board are in contact with contact terminals. FIG. 7 is a schematic cross-sectional view of a high frequency connector according to another aspect of the present disclosure, in which the signal terminal is not offset backward with respect to the ground terminal. FIG. 7 is a schematic perspective view showing an arrangement of ground terminals and signal terminals in a high frequency connector according to another aspect of the present disclosure.

Hereinafter, various embodiments and features according to the present disclosure will be described with reference to FIGS. 1 to 17. Those skilled in the art can combine each embodiment and/or each feature without needing excessive explanation, and can also understand the synergistic effect of this combination. Duplicate explanations between embodiments will be omitted in principle. The reference drawings are primarily for the purpose of describing the invention and are simplified for ease of drawing. Each feature is understood to be a universal feature that is not only valid for the high frequency connector disclosed herein, but also applies to various other high frequency connectors not disclosed herein.

FIG. 1 is a schematic exploded perspective view of the high frequency connector 9. FIG. 2 and 3 are schematic perspective views of the high frequency connector 9. To explain the structure of the high frequency connector 9, directions are defined as follows. As shown in FIG. 1, the width direction is specified by a double-headed arrow extending between L and Ri. As will be understood from the description below, the width direction is equal to the direction along the rotation axis of the lock cover. Alternatively, the width direction can also be referred to as the left-right direction. The thickness direction is specified by a double-headed arrow extending between U and D. The front-rear direction is specified by a double-headed arrow extending between F and Re. The direction from Ri to L is called the left direction, and the opposite direction is called the right direction. The direction from D to U is called upward, and the opposite direction is called downward. The direction from Re to F is called the front, and the opposite direction is called the rear. The directions mentioned in this paragraph may be redefined in light of the content of the following description or drawings of this specification.

The high-frequency connector 9 is a composite of resin parts and metal parts, and plays the role of mechanically fixing the wiring board and electrically connecting the wiring board to external wiring and eventually to an external circuit. Hereinafter, a flexible wiring board will be referred to as an example of a wiring board coupled to the high frequency connector 9, but the invention is not limited to this. Naturally, a configuration in which the wiring board coupled to the high frequency connector 9 does not have flexibility is also assumed. The external wiring is, for example, wiring on a board (not shown) on which the high frequency connector 9 is mounted. The high frequency connector 9 can be fixed to the mounting board by a reflow process. The external circuit is, for example, a circuit on a board on which the high frequency connector 9 is mounted.

As shown in FIGS. 1 to 3, the high-frequency connector 9 includes an insulator 10 and a lock cover 30 rotatably supported by the insulator 10. In FIG. 1, the lock cover 30 is removed upward from the insulator 10 in order to clearly show the contact terminals 20 and the pressing pieces 40 provided on the insulator 10. The insulator 10 is provided with a contact terminal 20 and a pressing piece 40 in its width direction. The lock cover 30 is provided with a lock portion 34 and a slot 35 in its width direction. The lock portion 34 is pressed by the pressing piece 40 and presses the flexible wiring board 8 toward the contact terminal 20 side. As a result, the flexible wiring board 8 is locked between the lock portion 34 and the contact terminal 20. Note that a form in which the high frequency connector 9 does not have the lock cover 30 or the pressing piece 40 is also envisioned. Note that the insulator 10 and the lock cover 30 are made of a plastic material (for example, LCP), and the contact terminal 20 and the pressing piece 40 are made of a conductive material (for example, a metal such as phosphor bronze). The contact terminal 20 may be plated (for example, gold plated) to protect the surface or ensure solder wettability.

The insulator 10 is elongated in the width direction (left-right direction) of the high-frequency connector 9, and has a first end 11 and a second end 12 in the same direction. The first end 11 may be called the right end, and the second end 12 may be called the left end. The insulator 10 further includes a flat plate part 13 and a wall part 14 extending between the first end 11 and the second end 12. The flat plate portion 13 is arranged in front of the wall portion 14 with a space therebetween. Attachment portions 18 are provided at each of the first end portion 11 and the second end portion 12, and a metal reinforcing member 19 is attached to each attachment portion 18. The lock cover 30 is rotatably supported between the first end 11 and the second end 12 .

The lock cover 30 is rotatably supported between the first end 11 and the second end 12 of the insulator 10 . The lock cover 30 is molded separately from the insulator 10 by injection molding, and is attached to the insulator 10. The lock cover 30 has a first end 31 , a second end 32 , and a cover body 33 extending between the first end 31 and the second end 32 . The first end 31 is provided with a protrusion 36 that protrudes to the right and fits into the recess 66 of the first end 11 of the insulator 10 . A configuration in which the first end 31 is provided with a recess and the first end 11 of the insulator 10 is provided with a convex portion is also envisioned. The second end portion 32 is provided with a convex portion 37 that protrudes leftward and fits into the recess portion 77 of the second end portion 12 of the insulator 10 . A configuration in which the second end 32 is provided with a recess and the second end 12 of the insulator 10 is provided with a protrusion is also envisioned.

As shown in FIGS. 1 and 4, the insulator 10 is provided with a plurality of signal terminals 20S and a plurality of ground terminals 20G, and in short, from a combination of one or more signal terminals 20S and one or more ground terminals 20G. Two or more terminal arrangement subsets 20U are provided. The terminal array subset 20U is arranged in the width direction of the insulator 10. Although not necessarily limited to this, the terminal array subset 20U is a 4-terminal subset composed of a pair of signal terminals 20S and a pair of ground terminals 20G sandwiching the pair of signal terminals 20S. The terminal array subset 20U can be referred to as a GSSG terminal array subset, where G represents a ground terminal and S represents a signal terminal. The pair of signal terminals 20S may be used for differential signal transmission. A pressing piece 40 is arranged between adjacent terminal arrangement subsets 20U in the width direction of the high frequency connector 9.

Each pressing piece 40 provided on the insulator 10 is configured to support at least one signal terminal 20S included in one terminal array subset 20U adjacent to each other in the arrangement direction of the terminal array subsets 20U and at least one signal terminal 20S included in the other terminal array subset 20U. It is provided between the terminals 20S. The electrical influence that the pressing piece 40 may have on the signal terminal 20S, which is a transmission line for high-frequency signals, such as the parasitic capacitance component, is reduced.

The contact terminal 20 is partially embedded and fixed in the insulator 10 by insert molding (see FIGS. 6 and 7). The contact terminal 20 is for electrical connection between the insulator 10, an arm portion 20A supported in a cantilevered manner by the wall portion 14, an embedded portion 26 embedded in the insulator 10, and external wiring. The external connection part 27 is included. The arm portion 20A is vertically swingable about the base end portion of the arm portion 20A. The embedded portion 26 extends flatly in the front-rear direction. The external connection portion 27 is bent at two places. The rear end portion of the external connection portion 27 is placed on the mounting board of the high frequency connector 9.

Due to the spring properties of the arm portion 20A, the arm portion 20A can elastically return to the initial position from the position where it was pushed by the flexible wiring board 8 and displaced downward. The arm portion 20A is a metal plate shaped as shown in FIG. 8, and its thickness direction matches the up-down direction, and its width direction matches the left-right direction. The manner in which the contact terminals 20 are fixed to the insulator 10 is not limited to that shown in the drawings, and a manner in which the thickness direction of the arm portion 20A coincides with the vertical direction or other directions is also assumed. Needless to say, a configuration in which the contact terminals 20 are press-fitted into the insulator 10 and fixed is also assumed.

The arm portion 20A includes a proximal inclined portion 21, a contact portion 22, and an inclined guide portion 23 extending from the contact portion 22 toward the arm distal end side. The proximal inclined portion 21 extends between the proximal end of the arm portion 20A and the contact portion 22, and here extends obliquely upward as it goes forward. The contact portion 22 is a portion that is to be electrically connected to the pad of the flexible wiring board 8 by contacting it, and here, the contact portion 22 is a portion that is convex upwardly between the proximal inclined portion 21 and the inclined guide portion 23. curve. The inclined guide portion 23 is a portion that guides the flexible wiring board 8 in a direction in which the contact terminals 20 are not buckled, and here extends diagonally downward as it goes forward.

As shown in FIG. 8, the length L1 of the inclined guide portion 23 at the signal terminal 20S is shorter than the length L2 of the inclined guide portion 23 at the ground terminal 20G. As a result, the open stub included in the contact terminal 20 becomes shorter, suppressing small impedance mismatches that affect high frequency bands (30 GHz or higher), and improving the high frequency transmission characteristics of the high frequency connector 9. Although not necessarily limited to this, the boundary between the contact portion 22 and the inclined guide portion 23 in the contact terminal 20 can be defined by the boundary between the curved surface of the contact portion 22 and the flat surface of the inclined guide portion 23. In some cases, the length L1 of the inclined guide portion 23 of the signal terminal 20S is equal to or less than 1/2 the length L2 of the inclined guide portion 23 of the ground terminal 20G.

In addition, the contact portion 22 of the signal terminal 20S is offset toward the arm base end side from the contact portion 22 of the ground terminal 20G. The longer inclined guide portion 23 of the ground terminal 20G is promoted to contact the flexible wiring board 8 before the shorter inclined guide portion 23 of the signal terminal 20S. As a result, the flexible wiring board 8 is guided more smoothly by the inclined guide portion 23 of the ground terminal 20G, and buckling of the contact terminal 20 is suppressed. In the illustrated example, in the GSSG terminal array subset 20U, the inclined guide portions 23 of the signal terminal pair are sandwiched by the inclined guide portions 23 of the ground terminal pair on both left and right sides, and buckling of the contact terminals 20 is further suppressed.

The locking function of the high frequency connector 9 will be mainly explained below. As shown in FIGS. 1 and 7, a plurality of lock parts 34 are coaxially arranged between the first end 31 and the second end 32 of the lock cover 30. Each lock portion 34 is located directly above the contact portion 22 and rotates between a lock position and an unlocked position with respect to the rotation axis of the lock cover 30 in accordance with the rotation of the lock cover 30 . When the lock portion 34 is in the unlocked position, the flexible wiring board 8 is inserted into the high frequency connector 9 (see FIGS. 7 and 14). When the lock portion 34 is in the lock position, the flexible wiring board 8 is locked between the lock portion 34 and the contact terminals 20 (see FIG. 15). When locked in this way, the flexible wiring board 8 is biased toward the lock part 34 by the contact terminals 20, and the flexible wiring board 8 is more firmly sandwiched between the contact terminals 20 and the lock part 34. It will be done.

The lock portion 34 has one or more (advantageously a plurality of) arcuate surfaces in a cross section perpendicular to the width direction of the high frequency connector 9. As shown in FIG. 7, the lock portion 34 includes first and second arcuate surfaces 34m and 34n that are provided so as to face opposite sides in a cross section perpendicular to the rotation axis of the lock cover 30. When the lock cover 30 is in the unlocked state (the lock portion 34 is in the unlocked position), the first arcuate surface 34m of the lock portion 34 faces the rear, and the second arcuate surface 34n faces the front. When the lock cover 30 is in the locked state (the lock portion 34 is in the locked position), the first arcuate surface 34m of the lock portion 34 faces upward, and the second arcuate surface 34n faces downward. The first arcuate surface 34m has a larger radius of curvature than the second arcuate surface 34n. A tapered inclined surface that approaches each other from the first arcuate surface 34m toward the second arcuate surface 34n is provided between the first arcuate surface 34m and the second arcuate surface 34n.

Note that, although each lock portion 34 has the same cross-sectional shape in a cross section orthogonal to the width direction of the high-frequency connector 9, the present invention is not limited to this. The number of lock portions 34 provided on the lock cover 30 is the same as the number of press pieces 40 attached to the insulator 10, but is not limited thereto. The lock portion 34 includes a portion disposed on the rotation axis of the lock cover 30, but is not limited thereto. A configuration in which the lock portion 34 is arranged offset from the rotation axis of the lock cover 30 is also assumed. A configuration in which one lock portion 34 extends continuously between the first end 31 and the second end 32 of the lock cover 30 is also envisioned. In this form, a common single lock portion 34 is used for a plurality of pressing pieces 40 attached to the insulator 10.

A plurality of slots 35 are arranged in the width direction of the lock cover 30. Each slot 35 is arranged adjacent to the lock portion 34, thereby avoiding interference between the lock cover 30 and the pressing piece 40. The slot 35 penetrates between the upper surface 30p and the lower surface 30q of the lock cover 30 at a position adjacent to the lock portion 34. When the lock cover 30 is in the unlocked state, the pressing portion 44 (its front end portion) is inserted into the slot 35. When the lock cover 30 is in the locked state, the pressing part 44 (its front end) is disposed on the slot 35. The slot 35 has a rectangular upper and lower opening. The upper opening has a wider opening area than the lower opening.

A portion of the cover body 33 extending in the width direction exists between the slots 35 adjacent in the width direction of the lock cover 30 (see FIG. 6). The number of slots 35 provided in the lock cover 30 may be the same as the number of lock parts 34 and the number of pressing parts 44, but is not limited thereto. Adjacent slots 35 in the width direction of the lock cover 30 can also be combined to form one wide slot.

Each pressing piece 40 provided on the insulator 10 includes a flat plate portion arranged perpendicularly to the rotation axis of the lock cover 30 (in short, it is a flat plate material), for example, a metal plate formed by a press machine. Manufactured by punching process. The pressing piece 40 has a pressing portion 44 that presses the locking portion 34 downward. The pressing portion 44 is appropriately shaped so as not to hinder rotation of the locking portion 34. The pressing portion 44 has a pressing surface 44p for pressing the first arcuate surface 34m of the locking portion 34 downward, and a relief surface 44q provided adjacent to the pressing surface 44p. When the lock cover 30 rotates from the locked state to the unlocked state, the first arcuate surface 34m of the lock portion 34 changes from a state of contacting or facing the pressing surface 44p to a state of contacting or facing the relief surface 44q. The relief surface 44q is an inclined surface that gradually descends toward the rear.

The pressing piece 40 is a bent member that includes at least a pressing piece main portion 41 and a rotation prevention portion 42, and is simply an L-shaped member. The pressing piece main portion 41 extends in the front-rear direction of the high-frequency connector 9 (the direction in which the flexible wiring board 8 is inserted into and removed from the high-frequency connector 9), and is inserted into the through hole 15 of the insulator 10. The rotation blocking portion 42 extends in the thickness direction of the high-frequency connector 9 and is disposed behind the wall portion 14 of the insulator 10 . When the flexible wiring board 8 is sandwiched between the lock part 34 and the contact terminal 20, the flexible wiring board 8 is urged upward by the contact terminal 20, and the flexible wiring board 8 presses the lock part 34 and then the pressing piece 40. The portion 44 is pushed upward. The pressing portion 44 of the pressing piece 40 is pushed upward, and the pressing piece 40 receives a clockwise rotational force when viewed from the front in FIGS. 6 and 7. By providing the rotation preventing portion 42 on the pressing piece 40, the pressing piece 40 can sufficiently withstand the above rotational force due to the contact between the rotation preventing portion 42 of the pressing piece 40 and the insulator 10, especially the wall portion 14 thereof. I can do it. This facilitates more secure attachment of the pressing piece 40 to the insulator 10.

The pressing piece main portion 41 is inserted into the through hole 15 of the wall portion 14 of the insulator 10 . The through hole 15 has a rectangular front opening and a rear opening. When the pressing piece 40 is attached to the insulator 10 , the pressing piece main portion 41 is inserted into the through hole 15 through the rear opening of the through hole 15 . As a result of this insertion, the pressing piece main portion 41 fully protrudes from the front opening of the through hole 15, and the rotation preventing portion 42 is placed in contact with or close to the wall portion 14. Note that the through hole 15 is an opening that is narrow in the width direction of the high frequency connector 9 and long in the thickness direction of the high frequency connector 9. The attachment of the pressing piece 40 to the insulator 10 can be assumed in various other ways and should not be limited to the illustrated example. A form in which a groove is provided on the upper surface of the wall portion 14 of the insulator 10 is also assumed.

The contact terminal 20 and the pressing piece 40 are not electrically connected to each other and are provided separately to the insulator 10. Thereby, the shape of the contact terminal 20 can be optimized for good electrical connection with the flexible wiring board 8. Furthermore, spring properties can be imparted to the contact terminals 20, ensuring good contact with the flexible wiring board 8. Furthermore, since the contact terminal 20 and the pressing piece 40 are separated so as not to be in contact with each other, the contact terminal 20 and the pressing piece 40 are not in contact with each other and are not electrically conductive, so that the contact terminal 20 can be used for transmitting high frequency signals. The shape of is optimized. As a result, the high frequency connector 9 can be used for transmitting high frequency signals of 30 GHz or higher, for example.

The insulator 10 is provided with one or more guide protrusions, three guide protrusions 16a to 16c in the illustrated example, for suppressing buckling of the contact terminals 20 due to contact with the flexible wiring board 8. The three two-guide protrusions 16a to 16c are provided to correct warping in the width direction of the flexible wiring board 8 to be coupled to the high frequency connector 9, and here, the three two-guide protrusions 16a to 16c are provided at the center in the width direction and at both ends in the width direction of the flexible wiring board 8. It is provided in correspondence with. The positions or shapes of the guide protrusions 16a to 16c are designed depending on the direction in which the flexible wiring board 8 is moved for electrical and mechanical coupling with the high frequency connector 9. Note that the guide protrusion 16c is an intermediate guide protrusion provided corresponding to an intermediate region between the terminal array subsets 20U arranged adjacently.

Each of the guide protrusions 16a to 16c is provided at a greater distance from the base end side of the arm portion 20A than the inclined guide portion 23, and is provided so as to protrude in the same direction as the direction in which the contact portion 22 protrudes convexly. It will be done. Each of the guide protrusions 16a to 16c is provided with a guide inclined surface that extends diagonally upward toward the rear, thereby guiding the flexible wiring board 8. That is, when the flexible wiring board 8 is moved rearward for coupling with the high frequency connector 9, it is guided obliquely upward by the guide slopes of the guide protrusions 16a to 16c.

As shown in FIG. 9, the flexible wiring board 8 has openings or cutouts 86a to 86c for avoiding interference with the guide protrusions 16a to 16c described above. When the pads of the flexible wiring board 8 come into contact with the contact portions 22 and the flexible wiring board 8 is locked between the lock cover 30 and the insulator 10, the guide protrusions 16a to 16c open or cut out portions 86a to 86c, respectively. , and the flexible wiring board 8 is prevented from detaching from the insulator 10.

The flexible wiring board 8 may be warped as shown in FIG. 10(a) or FIG. 11(a). When the flexible wiring board 8 is moved toward a position where it is electrically and mechanically coupled to the high frequency connector 9, it is guided obliquely upward by the above-mentioned guide protrusions 16a to 16c. When the flexible wiring board 8 warps as shown in FIG. 10(a), the central region of the flexible wiring board 8 is pushed toward the lock cover 30 by the guide protrusion 16c, and the warping is reduced as shown in FIG. 10(b). Ru. When the flexible wiring board 8 warps as shown in FIG. 11(a), the left and right end areas of the flexible wiring board 8 are pushed toward the lock cover 30 by the guide protrusions 16a and 16b, as shown in FIG. 11(b). Warpage is reduced. The pads of the flexible wiring board 8 come into contact with the contact terminals 20 in a state where the flatness of the flexible wiring board 8 is improved, thereby promoting stable electrical connection between the flexible wiring board 8 and the high frequency connector 9.

The insulator 10 includes a housing portion 10H that houses the dielectric 50. The dielectric 50 is made of a conductive resin such as liquid crystal polymer (LCP), for example. The pressing piece 40, particularly its rotation preventing portion 42, prevents the dielectric 50 from falling off from the housing portion 10H. The dielectric 50 is provided to suppress ripples from occurring in high frequency signals.

A method for attaching flexible wiring board 8 to high frequency connector 9 will be described with reference to FIGS. 12 to 15. As shown in FIG. 12, first, the lock cover 30 is rotated rearward, and the lock portion 34 is rotated to the unlocked position. When the lock cover 30 is in the unlocked state, the lock cover 30 is not placed on the flat plate part 13. Therefore, the insertion end of the flexible wiring board 8 can be easily placed on the flat plate part 13 without being obstructed by the lock cover 30.

As shown in FIG. 13, flexible wiring board 8 is moved toward contact terminals 20. The insertion end of the flexible wiring board 8 is guided obliquely upward toward the rear by guide projections 16a to 16c provided on the upper surface of the flat plate portion 13 of the insulator 10, thereby suppressing buckling of the contact terminals 20. The flexible wiring board 8 is not flat in its width direction. Therefore, between the guide protrusion 16a and the guide protrusion 16c, or between the guide protrusion 16a and the guide protrusion 16c, the insertion end of the flexible wiring board 8 contacts the inclined guide portion 23 of the ground terminal 20G and moves backward. can be guided diagonally upward. The insertion end of the flexible wiring board 8 can contact not only the inclined guide part 23 of the ground terminal 20G but also the inclined guide part 23 of the signal terminal 20S. For example, the ground terminal 20G is pushed backward by the insertion end of the flexible wiring board 8, and the flexible wiring board 8 comes into contact with the inclined guide portion 23 of the signal terminal 20S.

As shown in FIG. 14, the flexible wiring board 8 collides with the front wall surface of the wall portion 14 and stops. Subsequently, the lock cover 30 is rotated forward, and the lock portion 34 is rotated to the lock position. As a result, as shown in FIG. 15, the flexible wiring board 8 is sandwiched and locked between the lock part 34 of the lock cover 30 and the contact part 22 of the contact terminal 20, and at the same time, the pad 88 of the flexible wiring board 8 is brought into contact with the It contacts the contact portion 22 of the terminal 20 and becomes electrically conductive. Note that when the flexible wiring board 8 is sandwiched between the insulator 10 and the lock cover 30, the first arcuate surface 34m and the pressing portion 44 come into contact, and the second arcuate surface 34n and the flexible wiring board 8 come into contact.

FIG. 16 is a schematic cross-sectional view of a high frequency connector 9 according to another embodiment. FIG. 17 is a schematic perspective view showing an arrangement of a ground terminal 20G and a signal terminal 20S in a high frequency connector according to another embodiment. As shown in FIGS. 16 and 17, there is no need to offset the signal terminal 20S backward with respect to the ground terminal 20G.

Various modifications to the embodiments and features may be made by those skilled in the art in light of the above teachings. The symbols included in the claims are for reference only and should not be referred to for the purpose of limiting the scope of the claims.

8 Flexible wiring board 9 High frequency connector 10 Insulator 13 Flat plate portion 14 Wall portions 16a to 16c Guide protrusion 20 Contact terminal 20A Arm portion 20G Ground terminal 20S Signal terminal 20U Terminal array subset 22 Contact portion 23 Inclined guide portion 30 Lock cover 40 Pressing piece

Claims (8)

A high frequency connector to which a flexible wiring board is electrically connected ,
an insulator;
A plurality of contact terminals arranged in the width direction of the insulator to be individually electrically connected to a plurality of pads arranged in the same row in the width direction of the flexible wiring board, a plurality of ground terminals and a plurality of ground terminals. Equipped with multiple contact terminals including signal terminals,
Each of the ground terminal and the signal terminal includes an arm portion supported in a cantilevered manner by the insulator, and the arm portion includes a contact portion and an inclined guide portion extending from the contact portion toward the arm tip side,
The length of the inclined guide portion at the signal terminal is shorter than the length of the inclined guide portion at the ground terminal,
A high frequency connector in which a contact portion of the signal terminal is offset toward an arm base end side from a contact portion of the ground terminal . The high frequency connector according to claim 1, wherein the length of the inclined guide portion of the signal terminal is 1/2 or less of the length of the inclined guide portion of the ground terminal. Each of the ground terminal and the signal terminal includes an embedded part embedded in the insulator for cantilever support of the arm part, and an external connection part to which external wiring is electrically connected, and the embedded part The connector according to claim 1 or 2, wherein the external connecting portion is a portion that extends flatly and the external connecting portion is a portion that is bent at two places . The insulator has one or more guide protrusions provided further apart from the arm proximal end side than the inclined guide part,
The high frequency connector according to any one of claims 1 to 3, wherein the one or more guide protrusions are provided to correct warpage in the width direction of a flexible wiring board to be coupled to the high frequency connector. The high frequency connector according to claim 4, wherein the one or more guide protrusions are provided to protrude in the same direction as the direction in which the contact portion protrudes convexly. The plurality of contact terminals include a plurality of subsets including one or more ground terminals and one or more signal terminals,
The high frequency connector according to claim 4 or 5, wherein the one or more guide protrusions include an intermediate guide protrusion provided corresponding to an intermediate region between the adjacent subsets. The high frequency connector according to any one of claims 4 to 6, wherein the one or more guide protrusions include at least three guide protrusions provided in correspondence with the center in the width direction and both ends in the width direction of the flexible wiring board. . A flexible wiring board coupled to the high frequency connector according to any one of claims 4 to 7, comprising one or more openings or cutouts for avoiding interference with the one or more guide protrusions. A flexible wiring board having a section.

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