JP5615319B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector, and more particularly to an L-shaped coaxial connector used for connection of a coaxial cable.

  In recent years, electronic devices such as mobile phones, notebook personal computers (PCs), and tablet PCs have been actively developed. In these electronic devices, there is a demand for miniaturization in order to improve portability, and miniaturization is also demanded for electronic components incorporated therein. L-type coaxial connectors are coaxial cables that connect antennas to various electronic components such as RF circuits and central processing units in mobile phones and notebook PCs, tablet PCs, and the like that have become common in recent years. In many cases, it is used for connection, and downsizing is demanded.

  As an L-shaped coaxial connector intended for miniaturization, for example, there is a technique disclosed in Japanese Patent Laid-Open No. 2008-147094 (Patent Document 1). The L-shaped coaxial connector described in Patent Document 1 is provided with a position restricting portion for determining a normal position of the center conductor so that the center conductor can be pressed and connected to the terminal without being soldered in a state where the center conductor is not displaced, and the lid portion is bent. The central conductor is held at a normal position by the pressing of the pressing member.

JP 2008-147094 A

  For example, although it is required that the height of the connector at the time of cable connection be about 1 mm, it is difficult to simply reduce the size of the connector and the cable in consideration of the processing accuracy, strength and product standards of the parts. Therefore, it is necessary to reduce the size by efficiently arranging the components in the connector. Moreover, since each component which comprises a connector is reduced in size by size reduction of a connector, various problems arise. For example, there is a tendency that the strength of the connector is weakened by reducing the thickness of each component. However, it is necessary to maintain the strength of the connector at a certain level or higher during assembly or use from the viewpoint of high reliability requirements for electronic devices and parts. In addition, from the viewpoint of demanding high productivity of electronic devices / parts, it is necessary to reduce the number of parts, the ease of processing parts, the ease of assembly, the reduction of man-hours, and hence the manufacturing cost.

  On the other hand, as shown in Patent Document 1, when connecting the coaxial cable to the coaxial connector, it is necessary to hold the central conductor of the coaxial cable in a proper position. At that time, it is necessary to prevent the tip of the center conductor from going too far. As a method for positioning the center conductor when connecting the coaxial cable, it is conceivable to provide a restricting means that contacts and stops the tip of the center conductor so that the tip of the center conductor does not go too far. As the restricting means, for example, it is conceivable to provide a protrusion on the central conductor connection surface on the terminal. As a method of forming the protrusion, for example, a method of forming the protrusion by punching from the lower side of the plate-like terminal in consideration of a reduction in height, productivity, and the like can be considered. However, when the protrusion is formed by punching out, the strength around the protruding portion may be deteriorated due to the miniaturization of the terminal. In particular, when the connector is assembled, in the case of a coaxial connector having a structure in which the terminal is press-fitted into the insulating seat and fixed, deterioration in strength around the press-fitted portion must be avoided.

  Accordingly, an object of the present invention is to provide a means for restricting the tip position of the center conductor to a normal position when connecting the coaxial cable in the electrical connector for the coaxial cable, and to maintain the strength of the terminal at a predetermined level or more. It is to provide the technology that can. The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows. That is, the electrical connector according to the present invention has a cylindrical portion that opens in the fitting direction with the mating connector, and supports the coaxial cable so that the central axis of the coaxial cable is substantially perpendicular to the fitting direction. An outer conductor of a conductive material electrically connected to the shielded wire of the coaxial cable, an insulating seat of an insulating material accommodated in the cylindrical portion of the outer conductor, and accommodated in a terminal accommodating portion of the insulating seat; It has the terminal of the electroconductive material electrically connected with the center conductor of the said coaxial cable. The terminal includes a flat contact portion that contacts the central conductor of the coaxial cable on the upper surface, a fitting portion that elastically contacts the terminal of the mating connector when mated with the mating connector, and the contact portion. Provided in the vicinity of the end opposite to the coaxial cable, press-fitted into the groove of the terminal accommodating portion of the insulating seat, provided on the upper surface of the contact portion, and the tip position of the central conductor of the coaxial cable And a projecting portion that regulates. Further, the protrusion is formed by being punched from the lower side of the contact portion, and the width of the protrusion is wider on the coaxial cable side than the end.

Of the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.
(1) It is possible to reduce the size and height of an electrical connector for a coaxial cable.
(2) The tip position of the center conductor can be restricted to the normal position when connecting the coaxial cable.
(3) The strength around the press-fit portion of the terminal is maintained at a predetermined level or higher.

It is a figure which shows the state before the assembly of an L-shaped coaxial connector. It is a figure which shows the structure of the outer conductor before the assembly of an L-shaped coaxial connector. It is a figure which shows the structure of the insulation seat before the assembly of an L-shaped coaxial connector. It is a figure which shows the structure of the terminal before the assembly of an L-shaped coaxial connector. It is a figure which shows the L-shaped coaxial connector of the state by which the insulation seat and the terminal were press-fit and fitted. It is a figure which shows the L-shaped coaxial connector of the state which has arrange | positioned the coaxial cable on the insulation seat and the terminal. It is a figure which shows the L-shaped coaxial connector of the state bent while pressing the outer cover part of an outer conductor, and pressing the inner cover part of an insulating seat. It is sectional drawing of the L-shaped coaxial connector shown in FIG. It is a figure which shows the L-shaped coaxial connector of the state which closed and fixed the outer cover part of the outer conductor, and the inner cover part of the insulating seat completely. FIG. 10 is a cross-sectional view of the L-shaped coaxial connector shown in FIG. 9. It is a figure which shows the insulating seat of the state which inserted the terminal.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

  FIG. 1 is a diagram showing each member in a state before assembly of an L-shaped coaxial connector according to an embodiment of the present invention. 2 to 4 are diagrams showing details of each component. In the L-shaped coaxial connector according to the present embodiment, the extending direction (center axis) of the coaxial cable and the fitting direction of the mating connector are substantially perpendicular. The L-shaped coaxial connector is housed in an outer conductor 100 electrically connected to a shielded wire of a coaxial cable (see FIGS. 6 to 10), an insulating seat 200 accommodated in the outer conductor 100, an insulating seat 200, It is comprised by the terminal 300 electrically connected with the center conductor of a coaxial cable.

  The outer conductor 100 is made by punching a metal plate made of a conductive material such as phosphor bronze and bending it. As shown in FIG. 2, the outer conductor 100 is rounded so as to have a substantially cylindrical shape, and has a cylindrical portion 104 having a gap 106 at one place in the circumferential direction, and a counterpart extending from positions on both sides of the gap 106. Two holding arms 108 parallel to the connector insertion direction (vertical direction), and an outer lid portion 112 that is provided on the opposite side of the gap 106 in the diameter direction and that stands up from the upper end of the cylindrical portion 104. Etc.

  The cylindrical portion 104 is a portion that accommodates the main body portion 204 of the insulating seat 200 in a concentric position, and has a protruding seat portion 116 that receives the main body portion 204 of the insulating seat 200 on the inner surface. In addition, a plurality of cut grooves 120 are provided in the circumferential direction for providing elasticity on the radially outer side of the cylindrical portion 104. Locking portions 124a, 124b, and 128a for press-fitting and fixing the insulating seat 200 to the upper portions on both sides of the cylindrical portion 104 in the direction perpendicular to the extending direction of the holding arms 108 and the upper portions of the holding arms 108, respectively. , 128b are formed. In addition, an annular lock groove 122 is provided near the lower end of the outer peripheral surface of the cylindrical portion 104 to provide a locking function when mated with the mating connector.

  The outer lid portion 112 includes a constricted bent portion 132, a flat lid portion 136 that is connected to the bent portion 132 and covers the tubular portion 104 when bent, and a fixing portion 148 that surrounds and fixes the holding arm 108 after bending. And a shielded wire crimping part 156 for encircling and electrically connecting the shielded cable of the coaxial cable, and an outer skinned caulking part 168 for caulking and encircling the outer skin of the coaxial cable. The outer lid portion 112 is bent at a bent portion 132 that is a connection portion with the cylindrical portion 104 when connecting to the coaxial cable, and covers the coaxial cable.

  The flat lid portion 136 has side portions 140 that are bent downward at both ends when bent. Further, when the bent portion 132 is bent, a protruding portion 144 is formed on the inner surface by embossing. The distance between the inner surfaces of the two side portions 140 is equal to or larger than the outer diameter of the tubular portion 104.

  The fixed portion 148 has side portions 152 that bend downward at both ends when bent. After the bent portion 132 is bent, the side portion 152 is formed so as to come into contact with the outer surface of the holding arm 108 and further wrap around the holding arm 108.

  The shield wire caulking portion 156 has a side portion 160, and after the bent portion 132 is bent, the shield wire of the coaxial cable is caulked and electrically connected. Further, when the bent portion 132 is bent, a protruding portion 164 is formed on the inner surface by embossing so that the coaxial cable cannot be pulled out of the connector even if the coaxial cable is pulled in the extending direction. .

  The outer caulking portion 168 also has a side portion 172, and after the bent portion 132 is bent, the outer casing of the coaxial cable is caulked. Further, when the bent portion 132 is bent, a protruding portion 176 is formed on the inner surface by embossing, so that even if the coaxial cable is pulled in the extending direction, the coaxial cable is difficult to be removed from the connector.

  3A and 3B show a detailed configuration of the insulating seat 200, where FIG. 3A is a perspective view and FIG. 3B is a plan view. The insulating seat 200 is made by molding an insulating material. As the insulating material, for example, a heat-resistant and flexible material such as a material in which liquid crystal polymer (LCP, liquid crystal polymer) resin is filled with a filler such as glass fiber, carbon fiber, or mica is used. As shown in FIG. 3, the insulating seat 200 includes a substantially cylindrical main body portion 204, a shoulder portion 208 extending in the extending direction of the coaxial cable radially outward from the upper position of the main body portion 204, and the shoulder portion 208 and the radius. It has an inner lid portion 212 that is located on the opposite side and extends upward. On the shoulder 208 of the insulating seat 200, guide walls 248 are inclined and erected on both sides, and this guides the inner lid 212 when the inner lid 212 is bent.

  In the main body portion 204 of the insulating seat 200, a terminal accommodating portion 216 having a substantially rectangular inner cylindrical surface that accommodates the tongue-like fitting portion 308 of the terminal 300 is formed so as to penetrate vertically. The flange portion 220 is formed. Further, in the flange portion 220, projecting portions 224 a and 224 b projecting radially outward are formed on both sides of the shoulder portion 208 in the direction perpendicular to the extending direction. In addition, projecting portions 228 a and 228 b projecting outward are also formed on both sides in the direction perpendicular to the extending direction above the shoulder portion 208. By inserting the insulating seat 200 into the outer conductor 100, the protruding portions 224a, 224b, 228a, 228b are connected to the rectangular locking portions 124a, 124b formed on the cylindrical portion 104 and the holding arm 108 of the outer conductor 100. It is press-fitted and attached to 128a and 128b.

  The inner lid portion 212 can be bent at a portion connected to the main body portion 204. The length of the inner lid portion 212 is a length such that the front end of the inner lid portion 212 is in the same position as the shoulder end surface 252 of the shoulder portion 208 in the extending direction in a state where the inner lid portion 212 is completely bent, or It is a little shorter than that.

  The shoulder end surface 252 of the shoulder 208 is positioned on the outer side in the cable extending direction than the cable side end 302 (see FIG. 4) of the terminal 300. On the inner side of the main body part 204 and the inner side of the arm part, there is a groove shape cut into a rectangle as viewed from the cable side so as to extend from the connection position with the inner lid part 212 of the main body part 204 to the shoulder end surface 252. A groove-shaped side wall cut into the rectangle is the guide wall 248, and a terminal 300 is disposed on a part of the seat portion 232 on the terminal accommodating portion side which is the bottom surface. Further, the seat portion 232 has a central conductor guide surface 236 that is located outside the cable side end portion 302 of the terminal 300 and in which the terminal 300 is not disposed on the upper surface. The seat portion 232 includes a slope 240 that extends downward from the upper surface of the contact surface of the terminal toward the tip of the cable side edge portion. Further, the central conductor guide surface 236 has a raised portion 244 that rises upward, and the end portion side of the raised portion 244 forms a part of the slope 240.

  4A and 4B show a detailed configuration of the terminal 300, in which FIG. 4A is a perspective view and FIG. 4B is a cross-sectional view taken along the line CC of FIG. The terminal 300 is made by punching a metal plate made of a conductive material such as phosphor bronze and bending it. In a normal case, a plurality of identical terminals are attached to the carrier at regular intervals, and the terminal is bent or the like with the cable side end portion 302 connected to the carrier. The terminal 300 is used for assembling the L-shaped coaxial connector after the cable side end 302 of the terminal 300 is removed from the carrier. As shown in FIG. 4, the terminal 300 has a contact portion 304 that comes into contact with the central conductor of the coaxial cable and is electrically connected, and a fitting portion 308 that fits into the terminal of the mating connector. Further, the terminal 300 has press-fit portions 324a, 324b, 322a, and 322b for fitting into the terminal locking portions 256a, 256b, 260a, and 260b of the insulating seat 200, respectively.

  The contact portion 304 has a substantially planar shape extending in the extending direction of the coaxial cable, and the upper surface that contacts the central conductor of the coaxial cable is engaged with the central conductor so that the coaxial cable does not come out. An uneven portion 312 formed by the recessed portion is provided. Further, in the vicinity of the inner lid side end 314 on the opposite side to the extending direction of the substantially flat surface, a projection for positioning the central conductor of the coaxial cable when connecting the coaxial cable and restricting the tip position of the central conductor of the coaxial cable 316 is provided slightly forward from the concentric position in the front-rear direction. The projecting portion 316 has a substantially triangular planar shape with the central conductor regulating surface 318 that restricts the tip of the central conductor of the coaxial cable from going too far toward one side (first side). A vertex facing the side is located in the vicinity of the inner lid side end 314. When the outer diameter of the tip of the central conductor abuts against the groove-shaped side wall of the main body, the protrusion 316 provided with the one side at the position and size where the tip abuts is struck from the lower side of the contact 304. Formed. Further, the protrusion 316 has an inclination that decreases from the center conductor regulating surface 318 toward the inner lid side end 314 and is lowest in the vicinity of the inner lid side end 314. And it is the lowest at the apex facing the first side of the triangle, and is the same height as the flat surface of the contact portion 304. Further, the width of the protrusion 316 is the largest in the planar shape, the width of the center conductor regulating surface 318 is the narrowest in the vicinity of the inner lid side end 314.

  For example, when a rectangular protrusion is formed by punching as a means for regulating the tip position of the center conductor, the strength of the press-fit portions 324a and 324b may be deteriorated. However, in the present embodiment, the launch width and height are minimized in the vicinity of the press-fit portions 324a and 324b, that is, in the vicinity of the inner lid side end portion 314, so that the strength of these portions is maintained above a predetermined level. Is done. Therefore, the protrusion 316 of the electrical connector according to the present embodiment has such a shape, so that the tip of the central conductor of the coaxial cable can be positioned and the strength of the terminal 300 can be maintained.

  The protrusions 316 shown in FIG. 4 are substantially triangular, but are not limited to this shape, and similar effects can be obtained even with other similar shapes. For example, the protrusion 316 may be trapezoidal. In this case, the protrusion 316 has a trapezoidal shape with the first side on the coaxial cable side (center conductor regulating surface 318) as the lower base and the second side on the inner lid side end 314 side as the upper base. The first side forms a central conductor regulating surface 318 that regulates the tip position of the central conductor, and the second side is in the vicinity of the press-fit portions 324a and 324b. Further, the protrusion 316 may have a shape obtained by cutting a part of an oval or an ellipse. In this case, the part of the egg-shaped or elliptical part cut out forms the central conductor regulating surface 318, and the width of the part of the central conductor regulating surface 318 or the vicinity of the center of the egg-shaped or elliptical shape becomes the widest. .

  As shown in FIG. 4, the fitting portion 308 has two tongue-like pieces 320 a and 320 b extending downward from both ends of the contact portion 304. The tongue-shaped pieces 320a and 320b are inclined so as to narrow each other as they go downward, and the shortest part of the distance is smaller than the size of the center conductor of the terminal (mating terminal) of the mating connector. Further, the tips of the tongue-shaped pieces 320a and 320b are inclined so as to increase the mutual distance so that the center conductor of the mating terminal can be guided to the center side. At the time of connection with the mating connector, the mating portion of the center conductor of the terminal of the mating connector pushes and spreads the two tongue-shaped pieces 320a and 320b. The fitting portion of the terminal is gripped. In the present embodiment, the terminal 300 is a female terminal, but in the present invention, the terminal may be a male terminal. Further, the number of tongue-like pieces is not limited to two, and may be three or more.

  FIG. 5 is a view of the connector according to an embodiment of the present invention after the outer conductor 100, the insulating seat 200, and the terminal 300 are assembled. The above connectors are assembled as described below. First, the main body portion 204 of the insulating seat 200 is inserted so as to be accommodated in the cylindrical portion 104 of the outer conductor 100, whereby the protruding portions 224a, 224b, 228a, and 228b of the insulating seat 200 are locked to the outer conductor 100. It press-fits into the parts 124a and 124b and is attached to the locking parts 128a and 128b. Further, the fitting portion 308 of the terminal 300 is press-fitted so as to be accommodated in the terminal accommodating portion 216 of the insulating seat, so that the press-fitting portions 322a, 322b, 324a, and 324b of the terminal 300 become the terminal locking portion of the insulating seat 200. Press-fit into 260a, 260b, 256a, 256b, respectively. Thereby, the lower surface of the contact portion 304 of the terminal 300 is placed and fixed on the upper surface of the seat portion 232 of the insulating seat 200.

  FIG. 6 is a view showing a state after the coaxial cable is arranged in the connector. After the terminal 300 is press-fitted and fixed, the coaxial cable is placed in the connector. The coaxial cable is stripped in three stages using a stripper or the like, and is exposed from the tip of the coaxial cable in the order of the central conductor C1, the dielectric C2, the shield line C3, and the outer sheath C4. The central conductor C1 of the coaxial cable is connected to the contact portion 304 of the terminal 300 and the insulating seat 200 so that the cross section of the dielectric of the coaxial cable is brought into contact with the shoulder end surface 252 of the insulating seat 200 and the central conductor C1 contacts the terminal 300. The seat 232 is disposed on the central conductor guide surface 236. When the portion where the center conductor is exposed is too long, the tip of the center conductor C1 contacts the center conductor regulating surface 318 of the protrusion 316, and the cross section of the dielectric C2 does not contact the shoulder end surface 252. For this reason, or because the center conductor C1 bends, the assembly operator can easily find the assembly abnormality.

  FIG. 7 is a view in which the outer lid portion 112 is bent halfway after the central conductor C1 of the coaxial cable is placed on the contact portion 304. When the outer lid portion 112 is bent, the inner lid portion 212 together with the outer lid portion 112 receives a pressing force from the inner surface of the flat lid portion 136 in the outer lid portion 112 (mainly, the protruding portion 144 of the inner surface). Is bent. FIG. 8 is a cross-sectional view taken along the line AA in FIG. As shown in FIG. 8, below the portion C <b> 11 where the dielectric or the like of the central conductor C <b> 1 of the coaxial cable has been peeled off, the central conductor of the contact portion 304 of the terminal 300 and the seat portion 232 of the insulating seat 200 is provided. There is a guide surface 236. On the other hand, the dielectric C2, the shield line C3, and the outer skin C4 of the coaxial cable are located on the outer side of the insulating seat 200 in the cable extending direction.

  Further, when the outer lid portion 112 (particularly, the flat lid portion 136) of the outer conductor 100 is tilted so as to cover the cylindrical portion 104, the bent portion is bent. At that time, a pressing force is applied to the outer surface of the inner lid portion 212 of the insulating seat 200 by the flat lid portion 136 of the outer conductor 100. In response to the pressing force, the inner lid portion 212 receives the inner surface (that is, the pressing surface) of the inner lid portion 212 and the terminal 300 and the upper surface of the contact portion 304 (that is, a supporting surface for supporting the center conductor C1). The center conductor C1 of the coaxial cable is clamped between the two. Thereafter, the holding portion 108 is surrounded by the fixing portion 148, and the position of the outer lid portion 112 is fixed so that the outer lid portion 112 does not open. Further, the shield wire C3 is caulked and surrounded by the shield wire crimping portion 156, and the electrical connection between the shield wire C3 and the external conductor 100 is ensured. Further, the outer skin C4 is caulked and surrounded by the outer skin caulking portion 168 to fix the coaxial cable so as not to be detached from the connector. As described above, the center conductor C1 is pinched, and the shield wire C3 and the outer skin C4 are squeezed and greatly deformed, but the dielectric C2 exposed from the shield wire is also greatly pinched. Even if the coaxial cable is fixed to the connector without being caulked, it is not greatly deformed. Therefore, there is little change in electrical characteristics such as the impedance of the cable when the connector is connected.

  FIG. 9 is a view of the connector and the coaxial cable after being fixed, and FIG. 10 is a cross-sectional view taken along the line BB in FIG. The center conductor C1 is clamped by the inner surface (pressing surface) of the inner lid portion 212 and the upper surface (supporting surface) of the contact portion 304 of the terminal 300, and electrical connection between the terminal 300 and the center conductor C1 is ensured. Since the uneven portion 312 on the upper surface of the contact portion 304 is engaged with the center conductor C1, the center conductor C1 is not easily separated from the terminal 300, and the electrical connection of the center conductor is stably maintained. Further, the center conductor C <b> 1 is held by the clamping pressure between the inner surface of the inner lid portion 212 and the raised portion 244 of the insulating seat 200. The central conductor C1 is secured by the clamping pressure between the inner surface of the inner lid portion 212 and the upper surface of the contact portion 304 of the terminal 300, and is held by the clamping pressure between the inner surface of the middle lid portion 212 and the raised portion 244. There is no need to fix the central conductor C1 to the terminal by soldering. Further, when a tension is applied to the coaxial cable in the coaxial cable extending direction, the tension is applied to a part of the central conductor C1 between the middle lid portion 212 and the raised portion 244. However, the middle lid portion 212 is flat and raised. Since the portion 244 is formed with a smooth curved surface and is usually not sharp, the central conductor is difficult to break. On the other hand, if the center conductor C1 is not pinched by the inner lid portion 212 and the raised portion 244, tension is applied to the portion of the center conductor between the inner lid portion and the cable side end of the contact portion of the terminal. Take it. In this case, the tip end corner on the cable side of the contact portion is often sharp, and tension is concentrated near the portion of the center conductor that contacts the tip end corner, which is likely to cause disconnection. Furthermore, if the end of the contact side on the cable side is the part that was connected to the carrier before using the terminal, spines or the like may remain at the end, and the center conductor may be damaged. It becomes easy to do.

  As shown in FIGS. 8 and 10, when the coaxial cable is arranged so that the dielectric C2 is positioned outside the insulating seat 200, a space is created below the portion C12 covered with the dielectric C2. At this time, since the outer lid portion 112 can push and move the dielectric C2 downward, the thickness of the inner lid portion 212 can be made thinner than the thickness of the dielectric C2 to reduce the height. Even if the center line of the portion C12 moves below the center line of the portion C11, the insulating seat 200 includes the inclined surface 240 at the end portion on the cable side, so that the center conductor C1 is the shoulder end surface 252 of the insulating seat. Without bending, it bends smoothly downward along the slope 240 and is not easily broken. Further, even when the dielectric C2 is pressed from above by the outer lid portion 112, it is not pinched by the seat portion 232 and is not deformed, so that there is little change in electrical characteristics such as cable impedance when the connector is connected.

  In addition, the center conductor C1 and the outer conductor 100 are separated by a dielectric C2 whose section abuts against the insulating seat 200 and the shoulder end surface 252 by aligning the distal end portion of the inner lid portion 212 with the shoulder end surface 252 when extending. Since the space between the center conductor C1 and the outer conductor 100 is less likely to be short-circuited, the space between the center conductor C1 and the outer conductor 100 can be prevented.

  A portion C13 covered by the shielded wire C3 of the coaxial cable and not covered by the outer cover is crimped by the shielded wire crimping portion 156, whereby the shielded wire C3 is pushed into the dielectric C2. Therefore, in the present embodiment, the center position in the portion C13 is at the same position in the height direction as the center in the portion C12, but may be moved downward in the present invention.

  In this embodiment, a part of the outer skin C4 is compressed and thinned by being caulked by the outer skin caulking portion 168. However, since it has a certain thickness, the central conductor in the portion C14 covered by the outer skin is downward. Although it moves, in this invention, the part C14 may keep the same height.

  In FIG. 11, the terminal 300 is inserted into the insulating seat 200, and the press-fit portions 322a, 322b, 324a, and 324b of the terminal 300 are fitted into the terminal locking portions 260a, 260b, 256a, and 256b of the insulating seat 200, respectively. It is a figure which shows the insulating seat 200 of the fixed state. When the outer lid portion 112 of the outer conductor 100 is bent, the inner lid portion 212 of the insulating seat 200 receives the pressing force from the flat lid portion 136 on the outer lid portion 112 on the outer surface of the inner lid portion 212. The portion 212 is positioned so as to correctly fix the center conductor C1 by the inclined guide walls 248 on both sides of the shoulder portion 208 and the tip side surfaces 262 on both side surfaces of the inner lid portion 212 (that is, normal Guided to bend and fall to position. The front end side surface 262 of the inner lid portion 212 is in contact with the guide wall 248 or faces with a slight gap, and the inner lid portion concave surface 264 is also in contact with the seat convex surface 266 or has a slight gap. Then, the central conductor C1 of the coaxial cable is clamped between the inner surface of the inner lid portion 212 and the contact portion 304 of the terminal 300.

  As a material for forming the insulating seat 200, a heat-resistant and flexible material, for example, a liquid crystal polymer (LCP, liquid crystal polymer) resin or the like filled with a filler such as glass fiber, carbon fiber or mica Material is used.

  When the insulating seat 200 is molded from an LCP resin or the like in which a filler is blended, the filler distribution at the root of the inner lid 212 is biased, or the filler just exists at the bent position of the root, etc. As a result, the inner lid portion 212 does not bend at an appropriate position of the root portion. In such a case, the pressing surface of the inner lid portion 212 is displaced from the position where it accurately overlaps the support surface of the contact portion 304 of the terminal 300, and the central conductor of the coaxial cable at the normal position by a sufficient pressing force. C1 cannot be pinched, and as a result, the characteristic impedance of the coaxial cable may be deteriorated and the high frequency characteristics may become unstable.

  In order to allow the inner lid portion 212 to be bent from an appropriate position of the root portion thereof, and to allow the pressing surface of the inner lid portion 212 to always hold the center conductor C1 to the contact portion 304 against the support surface in a normal position. As shown in FIG. 11, a cut portion 270 where the thickness of the inner lid portion 212 is the thinnest is provided at the base portion of the inner lid portion 212. The notch 270 is a groove (that is, a notch) that is positioned at the base portion of the inner lid 212 and extends in the width direction of the inner lid 212 and can be easily bent such as a V shape or a U shape.

A normal position where the center conductor C1 can be sufficiently clamped and fixed because it is bent at the position of the notched portion 270 that is easily bent when it falls to the contact portion 304 side upon receiving a pressing force from the outer lid portion 112. In addition, the inner lid 212 can be bent and tilted. The notch portion 270 is bent at least partially when the center conductor C1 is narrowed between the pressing surface of the inner lid portion 212 and the support surface of the contact portion 304 by bending the inner lid portion 212. May be disconnected. Even when a part or all of the cut portion is cut, the inner lid portion 212 is fixed with a sufficient pressing force received from the outer lid portion 112 (particularly, the flat lid portion 136). The inner lid portion 212 is supported and fixed by the inner lid portion concave surface 264 and the seat portion convex surface 266, the tip side surface 262 and the guide wall 248.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  An electrical connector such as an L-shaped coaxial connector has various uses. For example, it can be used for internal wiring of information equipment and electrical equipment in a wide range of industrial fields such as the information communication equipment industry and the automobile industry.

100 outer conductor 104 cylindrical portion 106 gap 108 holding arm 112 outer lid portion 116 projecting seat portion 120 cut groove 122 annular lock grooves 124a and 124b locking portions 128a and 128b locking portion 132 bent portion 136 flat lid portion 140 side Part 144 Protruding part 148 Fixing part 152 Side part 156 Shielded wire caulking part 160 Side part 164 Protruding part 168 Outer skin caulking part 176 Protruding part 200 Insulating seat 204 Main body part 208 Shoulder part 212 Middle cover part 216 Terminal accommodating part 220 Flange 224a, 224b Protruding part 228a, 228b Protruding part 232 Seat 236 Central conductor guide surface 240 Slope 244 Raised part 248 Guide wall 252 Shoulder end face 256a, 256b Terminal locking part 260a, 260b Terminal locking part 262 End side 264 Medium Lid concave surface 266 Seat convex surface 270, 270a, 270b, 270c Part 300 terminal 302 cable side end 304 contact part 308 fitting part 312 uneven part 314 inner lid side end part 316 projection part 318 central conductor regulating surface 320a, 320b tongue-like piece 322a, 322b press-fitting part 324a, 324b press-fitting part C1 center Conductor C2 Dielectric C3 Shielded wire C4 Outer skin

Claims (7)

It has a cylindrical portion that opens in the fitting direction with the mating connector, supports the coaxial cable so that the central axis of the coaxial cable is substantially perpendicular to the fitting direction, and is electrically connected to the shielded wire of the coaxial cable. An outer conductor of conductive material to be
An insulating seat made of an insulating material accommodated in the cylindrical portion of the outer conductor;
A terminal of a conductive material that is accommodated in a terminal accommodating portion of the insulating seat and electrically connected to a central conductor of the coaxial cable;
The terminal is
A flat contact portion in contact with the central conductor of the coaxial cable on the upper surface;
A fitting portion that elastically contacts the terminal of the mating connector when mated with the mating connector;
A press-fit portion provided in the vicinity of the end of the contact portion opposite to the coaxial cable, and press-fitted into the groove of the terminal accommodating portion of the insulating seat;
A protrusion that is provided on the upper surface of the contact portion and regulates a tip position of a center conductor of the coaxial cable;
The protruding portion is formed by being punched from the lower side of the contact portion,
The electrical connector according to claim 1, wherein a width of the protruding portion is wider on the coaxial cable side than the end portion.   2. The electrical connector according to claim 1, wherein the width of the protruding portion is widest on the coaxial cable side and narrows toward the end portion.   3. The electrical connector according to claim 1, wherein the height of the protruding portion is highest on the coaxial cable side and decreases toward the end portion. 4.   The protrusion has a triangular shape, and a first side of the triangle on the coaxial cable side forms a central conductor regulating surface that regulates a tip position of the central conductor, and faces the first side. The electrical connector according to claim 1, wherein a vertex is in the vicinity of the end.   5. The electrical connector according to claim 4, wherein the height of the protruding portion is lowest at a position of the apex facing the first side.   The electrical connector according to claim 5, wherein a height of the protruding portion is the same as a flat surface of the contact portion at a position of the apex facing the first side.   The protrusion has a trapezoidal shape having a first side on the coaxial cable side as a lower base and a second side on the end side as an upper base, and the first side is a tip of the central conductor. The electrical connector according to claim 1, wherein a central conductor regulating surface that regulates a position is formed, and the second side is in the vicinity of the end portion.

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