TW201401692A - Electrical connector - Google Patents

Abstract

The subject of the present invention is to provide a technique for electrical connector of coaxial cable, with which the means for limiting the front end position of central conductor at a normal position can be mounted on a terminal while connecting the coaxial cable and the strength of the terminal can be maintained above a predetermined level. The terminal (300) comprises: a flat contact portion (304) contacted with the upper portion of the central conductor of the coaxial cable; an engaging portion (308) for elastically contacting with the terminal of an opponent connector while engaging with the opponent connector; a pressing portion (324a, 324b) configured near the end (314) of the contact portion (304) on the opposite side of the coaxial cable and pressed into the groove of a terminal receiving portion of an insulation base; and, a protrusion portion (316) configured on the contact portion (304) for limiting the front end position of the central conductor of the coaxial cable. The protrusion portion (316) is formed by stamping the lower side of the contact portion (304). The width of the protrusion portion (316) is gradually become smaller in the direction toward the end (314) from the coaxial cable side.

Description

Electrical connector

The present invention relates to electrical connectors, and more particularly to L-shaped coaxial connectors for use in connection of coaxial cables.

In recent years, the development of electronic devices such as mobile phones, notebook computers (PCs), and tablet computers has become popular. These electronic devices need to be miniaturized in order to improve the mobility, and therefore, various electronic components that are required to be assembled inside must be miniaturized. Most of the L-type coaxial connectors are used for connecting various types of electronic components such as notebook computers and tablet computers used for communication in recent years to communication, such as RF circuits and central processing devices, and are required to be miniaturized.

For example, a technique disclosed in Japanese Laid-Open Patent Publication No. 2008-147094 (Patent Document 1) is known. The L-type coaxial connector described in Patent Document 1 is capable of crimping a terminal without performing soldering in a state where the center conductor is not offset, and is provided with a position restricting portion for determining a normal position of the center conductor. The connector of the center conductor is held at a regular position by the buckling of the lid portion and the pressing of the pressing member.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-147094

For example, it is required to make the height of the connector when the cable is wired to about 1 mm. However, when the processing accuracy, the strength, the product specifications, and the like of the parts are considered, it is extremely difficult to miniaturize the connector and the cable. Therefore, it is necessary to reduce the size of the components by effectively arranging the components in the connector. Moreover, since the components constituting the connector are miniaturized by the miniaturization of the connector, various problems occur. For example, the strength of the connector tends to be weak due to the reduction in size and size of each component. However, from the viewpoint of high reliability requirements of electronic equipment, parts, and the like, the strength of the connector at the time of assembly or use needs to be kept constant or more. In addition, from the viewpoint of high productivity of electronic equipment and parts, it is necessary to reduce the number of parts, ease of processing of parts, ease of assembly, and reduction in man-hours, and further reduce manufacturing costs.

Further, as also shown in the aforementioned Patent Document 1, when the coaxial cable is wired to the coaxial connector, it is necessary to maintain the center conductor of the coaxial cable at a regular position. At this time, it is necessary to make the front end of the center conductor not over the head. As the coaxial cable is wired, the center conductor is positioned. In order to prevent the front end of the center conductor from excessively entering the deep portion, a restriction means for stopping the abutment of the front end of the center conductor is employed. As the restriction means, for example, it is possible to provide a projection on the center conductor connection surface on the terminal. As a method of forming the protrusion, for example, a method of forming a protrusion from a lower side of a plate-shaped terminal can be employed in consideration of a low profile, productivity, and the like. However, in the case where the projection is formed by punching, the strength of the periphery of the press portion is deteriorated due to the miniaturization of the terminal. In particular, in the case of a coaxial connector of such a configuration in which the terminal is pressed into the insulating seat and fixed while the connector is assembled, it is necessary to prevent the strength of the periphery of the press-fitting portion from deteriorating.

Accordingly, an object of the present invention is to provide an electrical connector for a coaxial cable that provides a means for limiting the front end position of the center conductor to a regular position when the coaxial cable is wired, and can maintain the strength of the terminal above a predetermined value. Technology. The above and other objects and novel features of the present invention will be apparent from the description and appended claims.

The representative structure is briefly explained in the invention disclosed in the present invention. That is, the electrical connector of the present invention has an outer conductor having a conductive material that has an opening toward a mating direction with the counterpart connector. The tubular portion supports the coaxial cable such that a central axis of the coaxial cable is substantially perpendicular to the fitting direction, and is electrically connected to a shield line of the coaxial cable; and an insulating seat of an insulating material, the insulating seat is received in the foregoing The aforementioned cylindrical portion of the outer conductor; and a terminal of the conductive material, the terminal is The terminal is housed in the terminal accommodating portion of the insulating seat, and is electrically connected to the center conductor of the coaxial cable. Further, the terminal has a flat contact portion that is in contact with the center conductor of the coaxial cable, and a fitting portion that elastically contacts the terminal of the counterpart connector when the connector is fitted to the counterpart connector; a press-fitting portion that presses into a groove of the terminal accommodating portion of the insulating seat in a vicinity of an end portion of the opposite side of the coaxial cable; and a protrusion provided on an upper surface of the contact portion to restrict a position of a front end of the center conductor of the coaxial cable unit. Further, the protruding portion is formed by pressing from a lower side of the contact portion, and the width of the protruding portion is such that the coaxial cable side is wider than the end portion.

The effects obtained by simply describing the representative structure in the invention disclosed in the present invention are as follows:

(1) It is possible to achieve miniaturization and low profile of the electrical connector for coaxial cable.

(2) When the coaxial cable is wired, the front end position of the center conductor can be restricted to the normal position.

(3) The condition around the press-fitting portion of the terminal can be maintained at a predetermined level or more.

100‧‧‧External conductor

104‧‧‧Cylinder

106‧‧‧ gap

108‧‧‧ Keep the wrist

112‧‧‧Outer cover

116‧‧‧ convex seat

120‧‧‧cut into the ditch

122‧‧‧ annular locking groove

124a, 124b‧‧‧ carding

128a, 128b‧‧‧ card stop

132‧‧‧Flexing Department

136‧‧ ‧ flat cover

140‧‧‧ side

144‧‧‧ convex

148‧‧‧Fixed Department

152‧‧‧ side

156‧‧‧Shield wire riveting

160‧‧‧ side

164‧‧‧ convex

168‧‧‧Skin riveting

176‧‧‧ convex

200‧‧‧Insulation seat

204‧‧‧ Body Department

208‧‧‧ shoulder

212‧‧‧中盖部

216‧‧‧Terminal housing department

220‧‧‧Flange

224a, 224b‧‧‧ protruding parts

228a, 228b‧‧‧ highlights

232‧‧‧

236‧‧‧Center conductor guiding surface

240‧‧‧Bevel

244‧‧ ‧ Uplift

248‧‧‧ Guide wall

252‧‧‧ shoulder end face

256a, 256b‧‧‧ carding

260a, 260b‧‧‧ carding

262‧‧‧ front side

264‧‧‧ concave part of the middle cover

266‧‧‧Side convex

270, 270a, 270b, 270c‧‧ ‧ notch

300‧‧‧ terminals

302‧‧‧ Cable side end

304‧‧‧Contacts

308‧‧‧Mate

312‧‧‧

314‧‧‧ middle cover side end

316‧‧‧ protruding parts

318‧‧‧Center conductor limiting surface

320a, 320b‧‧‧ tongue

322a, 322b‧‧‧ press-in department

324a, 324b‧‧‧ Pressing Department

C1‧‧‧Center conductor

C2‧‧‧ dielectric

C3‧‧‧Shielded wire

C4‧‧‧ skin

Fig. 1 is a view showing a state before assembly of an L-shaped coaxial connector.

Fig. 2 is a view showing a state of the structure of an outer conductor before assembly of an L-shaped coaxial connector.

Fig. 3 is a view showing a state of the structure of the insulating seat before assembly of the L-shaped coaxial connector.

Fig. 4 is a view showing a state of a structure of a terminal before assembly of an L-shaped coaxial connector.

Fig. 5 is a view showing an L-shaped coaxial connector in a state in which an insulating seat and a terminal are fitted.

Fig. 6 is a view showing an L-shaped coaxial connector in a state in which a coaxial cable is placed in an insulating seat and a terminal.

FIG. 7 is a view showing an L-shaped coaxial connector in a state in which the outer lid portion of the outer conductor is bent and the middle lid portion of the insulating seat is bent while being pressed.

Figure 8 is a cross-sectional view of the L-shaped coaxial connector shown in Figure 7.

Fig. 9 is a view showing an L-shaped coaxial connector in a state in which the outer lid portion of the outer conductor and the inner lid portion of the insulating seat are completely closed and fixed.

Figure 10 is a cross-sectional view showing the L-shaped coaxial connector shown in Figure 9.

Fig. 11 is a view showing an insulating seat in a state in which a terminal is embedded.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

Fig. 1 is a view showing the components of the L-shaped coaxial connector according to the embodiment of the present invention in a state before assembly. Again, figure 2 to 4 are views showing details of each component. In the L-shaped coaxial connector of the present embodiment, the extending direction (center axis) of the coaxial cable and the fitting direction of the fitting with the counterpart connector are substantially perpendicular. The L-shaped coaxial connector is a central conductor 100 electrically connected to a shielded wire of a coaxial cable (see FIGS. 6 to 10), an insulating base 200 housed in the external conductor 100, and housed in the insulating base 200 and coaxially The terminal 300 of the cable is electrically connected to the terminal 300.

The outer conductor 100 is produced by punching and bending a metal plate of a conductive material such as phosphor bronze. As shown in FIG. 2, the outer conductor 100 is a cylindrical portion 104 which is rounded into a substantially cylindrical shape and has a gap 106 at a portion in the circumferential direction, and a counterpart connector extending from a position on both sides of the gap 106. Two holding shoes 108 that are parallel in the insertion direction (up-and-down direction) and an outer cover portion 112 that is provided on the opposite side of the gap 106 in the radial direction and are provided from the upper end of the cylindrical portion 104 are provided.

The tubular portion 104 is a portion that accommodates the main body portion 204 of the insulating base 200 at the position of the same core, and has a protruding seat portion 116 for receiving the main body portion 204 of the insulating seat 200 on the inner surface. Further, a plurality of slit grooves 120 for imparting elasticity to the outer side in the radial direction of the tubular portion 104 are formed in the circumferential direction. Engaging portions 124a and 124b for pressing and fixing the insulating base 200 are formed on an upper portion on both sides perpendicular to the extending direction of the holding arm 108 of the tubular portion 104 and an upper portion of each of the holding arms 108. 128a, 128b. Further, in the vicinity of the lower end of the outer peripheral surface of the tubular portion 104, an annular lock groove 122 having a locking function when fitted to the counterpart connector is formed.

The outer cover portion 112 has a contraction-shaped buckling portion 132, a buckling portion 132, a flat cover portion 136 covering the tubular portion 104 when flexed, and a fixing portion 148 that surrounds and fixes the wrist 108 after buckling; The shielded wire of the cable is riveted and electrically connected to the shielded wire riveting portion 156; and the outer sheath of the coaxial cable is riveted to surround the outer riveted portion 168. The outer cover portion 112 is bent at the bent portion 132 of the connection portion with the tubular portion 104 when it is connected to the coaxial cable, thereby covering the coaxial cable.

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

The fixing portion 148 has side portions 152 which are bent downward at the both ends when flexed. After the flexure 132 is flexed, the side portion 152 is shaped to contact the outer surface of the retaining wrist 108 and further bypasses into the lower portion of the retaining wrist 108.

The shielded wire caulking portion 156 has a side portion 160. After the buckling portion 132 is flexed, the shielded wire of the coaxial cable is caulked and electrically connected. Further, when the bent portion 132 is bent, the inner surface is formed, and the convex portion 164 is formed by embossing, so that the coaxial cable is not detached from the connector even if the coaxial cable is pulled in the extending direction.

The outer skin caulking portion 168 also has a side portion 172, and after the buckling portion 132 is flexed, the outer skin of the coaxial cable is riveted and surrounded. Further, when the flexure portion 132 is bent, it becomes the inner side surface, and is formed by embossing. The portion 176 is not easily detached from the connector even if the coaxial cable is pulled in the extending direction.

3 is a view showing the detailed structure of the insulating holder 200, (a) being a perspective view, and (b) being a plan view. The insulating base 200 is formed by molding an insulating material. As the insulating material, for example, a material which is filled with a filler such as a glass fiber, a carbon fiber or a mica such as a liquid crystal polymer (LCP) resin and which has heat resistance and has flexibility can be used. As shown in FIG. 3, the insulating base 200 has a substantially cylindrical body portion 204; a shoulder portion 208 extending from an upper portion of the body portion 204 toward a coaxial cable extending outward in the radial direction; and being located outside the shoulder portion 208 The middle cover portion 212 extends toward the opposite side of the outer side of the diameter. At the shoulder 208 of the insulator base 200, the guide wall 248 is erected obliquely to the sides, the guide wall being used to guide the middle cover portion 212 when it is flexed.

In the main body portion 204 of the insulating base 200, a terminal accommodating portion 216 for accommodating the tongue-like fitting portion 308 of the terminal 300 and having a slightly four-corner inner cylindrical surface is formed in the upper portion of the main body portion 204. A flange portion 220 is formed on the periphery. Further, in the flange portion 220, projecting portions 224a and 224b projecting outward in the outer diameter are formed on both sides perpendicular to the extending direction of the shoulder portion 208. Further, on both sides perpendicular to the extending direction above the shoulder portion 208, protruding portions 228a, 228b protruding outward are also formed. By inserting the insulating holder 200 to the outer conductor 100, the protruding portions 224a, 224b, 228a, and 228b are press-fitted into the cylindrical portion 104 provided on the outer conductor 100 and the rectangular locking portions 124a and 124b of the holding arm 108 to be mounted. In the locking portions 128a, 128b.

The middle cover portion 212 is capable of flexing at a portion that is connected to the body portion 204. The length of the middle cover portion 212 is such that the front end portion of the middle cover portion 212 has the same length as the shoulder end surface 252 of the shoulder portion 208 or a slightly shorter length in a state where the middle cover portion 212 is fully flexed.

The shoulder end surface 252 of the shoulder portion 208 is located closer to the outer side in the cable extending direction than the cable side end portion 302 (refer to FIG. 4) of the terminal 300. The inner side of the main body portion 204 and the inner side of the wrist portion have a groove shape which is cut into a rectangular shape when viewed from the cable side, and extends from the connection position where the main body portion 204 and the middle cover portion 212 are connected to the shoulder end surface 252. The side wall cut into the rectangular groove shape is the above-described guide wall 248, and the terminal 300 is disposed in a portion of the bottom portion of the seat portion 232 on the terminal accommodating portion side. Further, the seat portion 232 has a center conductor guiding surface 236 which is located outside the cable side end portion 302 of the terminal 300 and on which the terminal 300 is not disposed. The seat portion 232 has a slope 240 that extends toward the front end toward the contact surface of the terminal at the side edge portion of the cable. Further, the center conductor guiding surface 236 has a raised portion 244 that rises upward, and an end portion side of the raised portion 244 forms a part of the inclined surface 240.

4 is a view showing the detailed structure of the terminal 300, (a) is a perspective view, and (b) is a cross-sectional view of the C-C cut surface of (a). The terminal 300 is produced by punching and bending a metal plate of a conductive material such as phosphor bronze. In general, a plurality of identical terminals are attached to the carrier at regular intervals, for example, in a state where the cable-side end portion 302 is connected to the carrier, the terminal is bent or the like. The terminal 300 is used for assembly of the L-shaped coaxial connector after the cable-side end portion 302 of the terminal 300 is removed from the carrier. As shown in FIG. 4, the terminal 300 has a contact portion 304 that is in electrical contact with the center conductor of the coaxial cable, and a fitting portion 308 that is fitted to the terminal of the counterpart connector. Further, the terminal 300 has press-fitting portions 324a, 324b, 322a, and 322b for fitting to the terminal locking portions 256a, 256b, 260a, and 260b of the insulating holder 200, respectively.

The contact portion 304 is formed in a slightly planar shape extending in the extending direction of the coaxial cable. On the upper surface of the coaxial cable, a concave-convex portion 312 formed by a plurality of concave portions is provided, and the central conductor is engaged with the central conductor so that the coaxial cable does not Will be separated. Further, in the vicinity of the middle cover side end portion 314 on the side opposite to the direction in which the longitudinal plane extends, when the coaxial cable is connected, the center conductor of the coaxial cable is positioned and the projection 316 for restricting the front end position of the center conductor of the coaxial cable is The front and rear directions are located slightly ahead of the concentric position. The protruding portion 316 has a substantially triangular planar shape in which the center conductor restricting surface 318 for restricting the distal end of the center conductor of the coaxial cable from entering the deep portion as a side (first side), and a vertex position facing the first side In the vicinity of the middle cover side end portion 314. When the outer diameter of the front end of the center conductor abuts against the side wall of the groove shape of the main body portion, the protrusion 316 having the one side provided at the position and the size at which the front end abuts is formed by being pressed from the lower side of the contact portion 304. Further, the protruding portion 316 has an inclination which is lowered from the center conductor regulating surface 318 toward the middle cover side end portion 314, and is minimized in the vicinity of the middle cover side end portion 314. Moreover, the apex of the first side opposite to the first side of the triangle is the lowest, and the height is the same as the flat surface of the contact portion 304. Further, the width of the protruding portion 316 is a planar shape, and the width of the center conductor regulating surface 318 is the widest and becomes the narrowest in the vicinity of the middle cover side end portion 314.

For example, as a means for restricting the position of the tip end of the center conductor, when the rectangular projections are formed by press, the strength of the portion where the press-fit portions 324a and 324b are deteriorated may be deteriorated. However, in the present embodiment, the width and the height of the press are minimized in the vicinity of the intermediate portion side end portion 314 in the vicinity of the press-fitting portions 324a and 324b, and therefore the strength of this portion is maintained at a predetermined level or more. Therefore, the protruding portion 316 of the electrical connector of the present embodiment has such a shape that the positioning of the front end of the center conductor of the coaxial cable can be performed, and the strength of the terminal 300 can be maintained.

The protrusions 316 shown in FIG. 4 are slightly triangular, but are not limited to this shape, and may have other similar shapes, and the same effect can be achieved. For example, the protrusion 316 can be trapezoidal. In this case, the protrusion 316 is a trapezoid in which the first side (the center conductor regulating surface 318) on the side of the coaxial cable is the lower side and the second side on the side of the middle cover side end portion 314 is the upper bottom. Further, the first side forms a center conductor regulating surface 318 for restricting the position of the tip end of the center conductor, and the second side is in the vicinity of the press-fitting portions 324a and 324b. Further, the protrusion 316 may have a shape in which a part of an egg shape or an ellipse shape is cut out. In this case, a portion of the egg-shaped or elliptical portion is cut out to form the center conductor restricting surface 318, and the width of the portion of the center conductor restricting surface 318 or the portion near the center of the egg or ellipse becomes the widest.

As shown in FIG. 4, the fitting portion 308 has two tongue pieces 320a and 320b extending downward from both ends of the contact portion 304. The tongue pieces 320a and 320b are inclined so as to be reduced in distance toward each other, and the portion having the shortest distance is smaller than the size of the center conductor of the terminal (the counterpart terminal) of the counterpart connector. Moreover, the front ends of the tongue pieces 320a and 320b are The inclination is such that the mutual distance is increased so that the center conductor of the counterpart terminal can be guided toward the center side. When it is connected to the counterpart connector, the elastic force of the inner side of the tongue pieces 320a and 320b generated by the two tongue pieces 320a and 320b is increased by the fitting portion of the center conductor of the terminal of the counterpart connector, and the grip is held. The fitting part of the other terminal. 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 tongue piece is not limited to two, and may be three or more.

Fig. 5 is a view showing a connector according to an embodiment of the present invention in which the outer conductor 100, the insulating base 200, and the terminal 300 are assembled. The aforementioned connector is assembled as follows. First, the main body portion 204 of the insulating base 200 is inserted into the tubular portion 104 housed in the outer conductor 100, and the protruding portions 224a, 224b, 228a, and 228b of the insulating base 200 are pressed into the locking portion of the outer conductor 100. 124a and 124b are attached to the locking portions 128a and 128b. Further, the fitting portion 308 of the terminal 300 is press-fitted into the terminal accommodating portion 216 housed in the insulating holder, and the press-fitting portions 322a, 322b, 324a, and 324b of the terminal 300 are press-fitted into the terminal locking portion 260a of the insulating holder 200, respectively. , 260b, 256a, 256b. 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 holder 200.

Fig. 6 is a view showing a state in which a coaxial cable is disposed in a connector. After the terminal 300 is press-fitted, the coaxial cable is placed in the connector. The coaxial cable is subjected to three-stage peeling processing using a peeling machine or the like, and the center conductor C1, the dielectric material C2, the shield wire C3, and the outer skin C4 are sequentially exposed from the front end of the coaxial cable. The center conductor C1 of the coaxial cable is disposed at the contact portion 304 of the terminal 300 and the center conductor of the seat portion 232 of the insulating holder 200 The lead surface 236 is such that the dielectric material of the shaft cable abuts against the shoulder end surface 252 of the insulating base 200, and the center conductor C1 contacts the terminal 300. When the portion where the center conductor is stripped is too long, the front end of the center conductor C1 abuts against the center conductor regulating surface 318 of the protrusion 316, and the cross section of the dielectric C2 does not abut against the shoulder end surface 252, or Since the center conductor C1 is deflected, the assembly operator can easily find an assembly abnormality.

Fig. 7 is a view in which the center conductor C1 of the coaxial cable is placed on the contact portion 304 and the outer lid portion 112 is flexed to the middle. When the outer lid portion 112 is flexed, the pressing force from the inner surface of the flat lid portion 136 of the outer lid portion 112 (mainly the convex portion 144 of the inner surface thereof) is received, and the middle lid portion 212 and the outer lid portion 112 are received. Flexed together. 8 is a cross-sectional view showing the A-A cut surface of FIG. 7. As shown in FIG. 8, the center conductor of the contact portion 304 having the terminal 300 and the seat portion 232 of the insulating holder 200 is guided under the portion C11 where the dielectric of the center conductor C1 of the coaxial cable is peeled off and becomes bare. Face 236. Further, the dielectric C2, the shield C3, and the sheath C4 of the coaxial cable are positioned outside the cable extending direction of the insulating holder 200.

Further, when the outer conductor 100 outer cover portion 112 (particularly, the flat cover portion 136) is poured to cover the tubular portion 104, the bent portion is bent. At this time, a pressing force is applied to the outer surface of the inner lid portion 212 of the insulating seat 200 by the flat cover portion 136 of the outer conductor 100. Then, the middle cover portion 212 receives the pressing force, and the upper surface of the contact portion 304 of the terminal 300 (that is, the support surface for supporting the center conductor C1) is disposed on the inner surface of the middle cover portion 212 (ie, the pressing surface). The center conductor C1 of the coaxial cable is crimped. Then, the position of the outer cover portion 112 is fixed by surrounding the retaining wrist 108 by the fixing portion 148. The cover portion 112 is not opened. Further, the shield wire C3 is swaged and surrounded by the shield wire crimping portion 156 to ensure electrical connection between the shield wire C3 and the outer conductor 100. Further, the outer skin C4 is caulked and surrounded by the outer skin caulking portion 168 to be fixed so that the coaxial cable does not come off the connector. As described above, the center conductor C1 is pinched, and the shield wire C3 and the sheath C4 are swaged to be greatly deformed, but the dielectric C2 exposed from the shield wire is not strongly pinched and is not surrounded by the riveting, even in the coaxial cable. It is not deformed significantly when it is fixed in the connector. Therefore, there is little change in the electrical characteristics such as the impedance of the cable when the connectors are connected.

Fig. 9 is a view showing the connector and the coaxial cable after fixing, and Fig. 10 is a sectional view showing the cut surface of the B-B of Fig. 9. The center conductor C1 is sandwiched by the inner surface (pressing surface) of the middle cover portion 212 and the upper surface (support surface) of the contact portion 304 of the terminal 300 to ensure electrical connection between the terminal 300 and the center conductor C1. Since the uneven portion 312 located on the upper surface of the contact portion 304 is engaged with the center conductor C1, the center conductor C1 is less likely to be separated from the terminal 300, and electrical connection can be stably ensured. Further, the center conductor C1 is held by the nip pressure generated by the inner surface of the middle cover portion 212 and the raised portion 244 of the insulating holder 200. Since the center conductor C1 utilizes the nip pressure generated by the inner surface of the middle cover portion 212 and the upper surface of the contact portion 304 of the terminal 300, electrical connection is ensured, and the inner surface of the middle cover portion 212 and the ridge portion 244 are used. The generated nip pressure is maintained, so that it is not necessary to fix the center conductor C1 to the terminal by soldering. Further, when tension is applied to the coaxial cable in the direction in which the coaxial cable extends, the tension is applied to a part of the center conductor C1 between the middle cover portion 212 and the raised portion 244, but since the middle cover portion 212 is In the plane, the raised portion 244 is formed by a smooth curved surface, and generally does not form a sharp shape, so that the center conductor is not easily broken. Further, when the center conductor C1 is not pinched by the middle cover portion 212 and the raised portion 244, tension is applied between the middle cover portion of the center conductor and the cable side end portion of the contact portion of the terminal. In this case, since the tip end corner portion of the cable portion on the side of the contact portion is sharply curved, the portion of the center conductor that is in contact with the tip end corner portion during tension collection tends to be disconnected. Further, in the case where the cable-side end portion of the contact portion is a portion in contact with the carrier before the terminal is used, the protrusion or the like remains on the end portion, and the center conductor is damaged, and in particular, the wire is easily broken.

As shown in FIGS. 8 and 10, when the coaxial cable is disposed such that the dielectric C2 is positioned outside the insulating holder 200, a space can be formed under the portion C12 covered by the dielectric C2. At this time, since the outer lid portion 112 can move the dielectric C2 downward and move, the thickness of the middle lid portion 212 can be made thinner than the thickness of the dielectric material C2. Since the center line of the portion C12 moves further downward than the center line of the portion C11, and since the insulating seat 200 has the inclined surface 240 at the cable side end portion, the center conductor C1 is not bent at the shoulder end surface 252 of the insulating seat. It can be smoothly curved downward along the slope 240 without being broken. In addition, even if the dielectric C2 is pressed by the outer lid portion 112 from the upper portion, it is not deformed by being pinched by the seat portion 232. Therefore, the electrical characteristics such as the impedance of the cable when the connector is connected are less changed.

Further, when the front end portion of the middle cover portion 212 and the shoulder end surface 252 are aligned in the extending direction when the buckling is performed, the cross section is brought into contact with the dielectric C2 of the insulating seat 200 and the shoulder end surface 252, whereby Center conductor C1 and Since the space between the outer conductors 100 is spaced apart, it is possible to prevent the center conductor C1 from coming into contact with the outer conductor 100 to cause a short circuit.

The portion C13 covered by the shielded wire C3 of the coaxial cable and not covered by the sheath is riveted by the shielded wire crimping portion 156, and the shielded wire C3 is pressed into the dielectric C2. Therefore, in the present embodiment, the position of the center of the portion C13 is located at the same position as the center of the portion C12 in the height direction, but in the present invention, it is also possible to move downward.

In the present embodiment, a part of the outer skin C4 is compressed and compressed by the outer skin caulking portion 168. However, since the thickness is constant, the center conductor in the portion C14 covered by the outer skin moves downward. However, in the present invention, the portion C14 may also have the same height.

11 is a view showing insulation in a state in which the terminal 300 is inserted into the insulating holder 200, and the press-fitting portions 322a, 322b, 324a, and 324b of the terminal 300 are fitted to the terminal locking portions 260a, 260b, 256a, and 256b of the insulating holder 200, respectively. Figure of the seat 200. The middle cover portion 212 of the insulating seat 200 receives the pressing force from the flat cover portion 136 of the outer cover portion 112 by the outer surface of the inner cover portion 212 when the outer cover portion 112 of the outer conductor 100 is flexed, by being placed on the shoulder The erected guide wall 248 on both sides of the portion 208 and the front end side 262 on both sides of the side of the middle cover portion 212 are guided to the correct fixed position for the center conductor C1 ( That is, the regular position) is flexed and dumped. Moreover, the front end side surface 262 of the middle cover portion 212 is opposite to the guide wall 248 or has a slight gap, and the middle cover portion concave surface 264 is also in contact with the seat portion convex surface 266 or has a slight gap. Between the inner surface of the middle cover portion 212 and the contact portion 304 of the terminal 300 Clamp the center conductor C1 of the coaxial cable.

As a material for forming the insulating seat 200, a material having heat resistance and flexibility, for example, a molding material filled with a filler such as glass fiber, carbon fiber, mica or the like in a liquid crystal polymer (LCP) resin or the like is used.

When the insulating base 200 is formed by a LCP resin or the like to which a filler is added, the middle cover portion 212 may be caused by the uneven distribution of the filler of the base of the middle cover portion 212 or the case where the filler is present at the buckling position of the base. It is not possible to flex at the ideal position of the base portion. In this case, the pressing surface of the middle cover portion 212 is offset from the position where the bearing surface of the contact portion 304 of the terminal 300 is correctly overlapped, and the center conductor C1 of the coaxial cable cannot be pinched at the regular position by sufficient pressing force. As a result, the characteristic impedance of the coaxial cable is deteriorated, causing a problem that the high frequency characteristics are unstable.

In order for the middle cover portion 212 to flex from a proper position of the base portion thereof, the pressing surface of the middle cover portion 212 always presses the center conductor C1 against the support surface of the contact portion 304 at a regular position, as shown in FIG. The thickness of the lid portion 212 in the base portion is the thinnest notch portion 270. The notch portion 270 is a groove (that is, a notch) that is formed in the base portion of the middle cover portion 212 and extends in the width direction of the middle cover portion 212 and is easily bent into a V shape or a U shape.

When the pressing force from the outer lid portion 112 is applied to the side of the contact portion 304, the position of the notch portion 270 which is easily bent can be bent, so that the center conductor C1 can be sufficiently crimped. The fixed position is fixed, and the middle cover portion 212 is flexed and dumped. The notch portion 270 is when the middle cover portion 212 is flexed so that the pressing at the middle cover portion 212 When the center conductor C1 is sandwiched between the surface and the support surface of the contact portion 304, at least a portion thereof may be cut. Even when a part or all of the notch portion is cut, the middle cover portion 212 can be fixed with a sufficient pressing force from the outer cover portion 112 (particularly, the flat cover portion 136), and the concave portion is covered by the middle cover portion. The middle cover portion 212 is supported and fixed by the 264 and the seat convex surface 266, the front end side surface 262, and the guide wall 248.

The invention that has been developed by the inventors of the present invention has been specifically described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea.

[Industry use possibility]

The electrical connector such as the L-type coaxial connector has various uses, for example, in the wide field of the information communication industry and the automobile industry, and is used for internal wiring of information equipment and electrical equipment.

300‧‧‧ terminals

302‧‧‧ Cable side end

304‧‧‧Contacts

308‧‧‧Mate

312‧‧‧

314‧‧‧ middle cover side end

316‧‧‧ protruding parts

318‧‧‧Center conductor limiting surface

320a, 320b‧‧‧ tongue

322a, 322b‧‧‧ press-in department

324a, 324b‧‧‧ Pressing Department

Claims (7)

An electrical connector characterized by having an outer conductor of a conductive material, the outer conductor having a tubular portion opening in a fitting direction with the counterpart connector, supporting the coaxial cable to allow the central axis of the coaxial cable to be embedded with the aforementioned The closing direction is substantially vertical and electrically connected to the shield wire of the coaxial cable; the insulating seat of the insulating material is received in the cylindrical portion of the outer conductor; and the terminal of the conductive material is The terminal receiving portion of the insulating seat is electrically connected to the center conductor of the coaxial cable, and the terminal includes a flat contact portion that is in contact with the center conductor of the coaxial cable; a fitting portion that elastically contacts the terminal of the mating connector, and a press-fit portion that is inserted into a groove of the terminal housing portion of the insulating seat in the vicinity of an end portion of the contact portion opposite to the coaxial cable; And a protrusion provided on an upper surface of the contact portion to limit a position of a front end of the center conductor of the coaxial cable, wherein the protrusion is from the contact Pressing the lower side is formed, the line width of the projecting portion of the coaxial cable-side end than the wider portion. An electrical connector as claimed in claim 1, wherein the foregoing The width of the protruding portion is the widest side of the coaxial cable, and is gradually narrowed toward the end portion. The electrical connector of claim 1 or 2, wherein the height of the protruding portion is the highest on the side of the coaxial cable, and is gradually lower toward the end portion. The electrical connector of claim 1 or 2, wherein the protrusion has a triangular shape, and the first side of the triangular coaxial cable side forms a center conductor limit for limiting a front end position of the center conductor The top surface of the surface facing the first side is located near the end. The electrical connector of claim 4, wherein the height of the protruding portion is the lowest at a position corresponding to the apex facing the first side. The electrical connector of claim 5, wherein the height of the protruding portion is at a position corresponding to the apex facing the first side, and is equal to a height of the flat surface of the contact portion. The electrical connector according to claim 1 or 2, wherein the protruding portion has a shape in which the first side of the coaxial cable side is a lower bottom and the second side of the end side is a trapezoidal shape of an upper base. The first side forms a center conductor regulating surface for restricting the front end position of the center conductor, and the second side position is near the end portion.