TW202232831A - electrical connector - Google Patents

Abstract

Provided is a receptacle connector comprising: a ground contact that has a cylindrical standing wall portion and a substrate connection portion to be connected to a substrate; a signal contact that is disposed so as to be surrounded by the standing wall portion; a housing that holds the ground contact and the signal contact in an insulated state; and an extension portion that secures the housing onto the ground contact. The signal contact has a contact portion, and a terminal portion that extends so as to be drawn out of the contact portion and is connected to a signal terminal portion. The extension portion secure the housing onto the ground contact by extending from the housing in a direction intersecting the direction in which the terminal portion extends and being locked to the substrate connection portion outside the standing wall portion.

Description

electrical connector

The present disclosure relates to an electrical connector.

There is known a connector device that electrically connects the signal transmission member and the electrical circuit of the substrate by fitting a plug connector connected to the signal transmission member and a socket connector mounted on the substrate (for example, refer to the patent literature). 1). The receptacle connector of Patent Document 1 includes an external terminal having a cylindrical portion, an internal terminal disposed inside the cylindrical portion, and an insulator formed with a groove connecting the inside and the outside of the cylindrical portion. [Prior Art Literature] [Patent Literature]

Patent Document 1: International Publication No. 2020/031760

[Problems to be Solved by Invention]

Here, in the receptacle connector of the above-mentioned Patent Document 1, a cutout for arranging an insulator is formed from the inner side and the outer side of the cylindrical portion. Therefore, with such a gap, the signal from the internal terminal is easily leaked to the outside (prone to generate noise), resulting in deterioration of the EMI (Electromagnetic Interference) characteristics of the connector.

Therefore, the present disclosure provides an electrical connector with improved EMI characteristics. [Technical means to solve problems]

The electrical connector of one aspect of the present disclosure is mounted on a substrate, and includes: a signal contact, which has: a contact portion extending in a direction away from the substrate; and a terminal portion leading out from the contact portion extending along the base plate; the ground contact has: a vertical wall part, which surrounds the contact part without a seam; ; and an insulating housing, which is arranged between the signal contact and the ground contact, and maintains the signal contact and the ground contact.

In the electrical connector of one aspect of the present disclosure, in the direction away from the substrate, the periphery of the contact portion of the signal contact is seamlessly surrounded by the vertical wall portion of the ground contact. In addition, in the direction along the substrate, the surrounding of the vertical wall portion is surrounded by the substrate connecting portion of the ground contact without any joints. Furthermore, an insulating casing is interposed between the signal contact and the ground contact. According to this configuration, since the signal contact is surrounded by the ground contact without a seam, the signal from the signal contact is less likely to leak to the outside of the ground contact (a structure that is less likely to generate noise). Thereby, the EMI characteristic of the electrical connector can be improved.

In the electrical connector of one aspect of the present disclosure, the housing has a columnar portion extending along the inner peripheral surface of the vertical wall portion. According to such a configuration, the contact area between the casing and the vertical wall portion increases. Thereby, the housing can more properly hold the signal contacts and the ground contacts.

In the electrical connector of one aspect of the present disclosure, the ground contact has a protruding locking portion protruding toward the region surrounded by the vertical wall portion, and the housing is locked to the ground contact. According to this configuration, the upright wall portion is engaged with the columnar portion extending along the inner peripheral surface of the upright wall portion by the locking portion protruding from the region surrounded by the upright wall portion. Thereby, since the falling off of the casing is prevented, the casing can be held more appropriately.

In the electrical connector of one aspect of the present disclosure, the locking portion protrudes from the end portion of the vertical wall portion in the direction away from the substrate, that is, the front end portion, and protrudes toward the area surrounded by the vertical wall portion, and forms a locking portion in the housing. The concave part of the part. By fitting the protrusion-shaped locking portion to the concave portion formed in the columnar portion, movement (eg, rotation) of the casing along the inner peripheral surface of the vertical wall portion is suppressed. Thereby, the casing can be held more appropriately.

In the electrical connector of one aspect of the present disclosure, the front end portion of the vertical wall portion is formed to be bent toward the region surrounded by the vertical wall portion. According to such a configuration, in the region surrounded by the vertical wall portion, the housing along the inner peripheral surface is brought into contact with the front end portion, thereby auxiliaryly suppressing the movement of the housing relative to the direction away from the substrate. Thereby, the casing can be held more appropriately.

In the electrical connector of one aspect of the present disclosure, a pair of the locking portions are provided in a manner of sandwiching the contact portion and facing each other. Since the pair of locking portions are opposed to each other in the periphery of the contact portion, the movement of the casing is restrained in a balanced manner, so that the casing can be held more appropriately.

In the electrical connector of one aspect of the present disclosure, the ground node is formed separately from the housing, and the housing has a pressing-in portion of a convex surface facing the inner peripheral surface of the vertical wall portion. By forming the ground contact and the housing separately, the electrical connector can be manufactured in an assembled manner, so that the manufacturing equipment can be simplified. In addition, since the inner peripheral surface of the vertical wall portion of the ground contact is pressed by the press-fit portion, which is a convex surface, the fixing strength of the casing is increased, so that the casing can be held more appropriately.

In the electrical connector of one aspect of the present disclosure, the ground contact is formed by integrally forming the vertical wall portion and the substrate connecting portion by drawing. Through the drawing process, the vertical wall portion of the ground contact and the substrate connecting portion are integrally formed, and no joint is formed between the vertical wall portion and the substrate connecting portion. Thereby, the easiness of manufacture of a ground contact can be improved.

In the electrical connector of one aspect of the present disclosure, the housing is integrally formed with the ground contact by insert molding in a manner of enclosing the surrounding of the locking portion. By fixing the columnar portion and the locking portion, the casing can be held more appropriately. [Effect of invention]

According to the present disclosure, an electrical connector which further improves EMI characteristics can be provided.

Hereinafter, the embodiment will be described in detail with reference to the drawings. In the description, the same elements or elements with the same function are marked with the same symbols, and repeated descriptions are omitted.

[1st Embodiment] 1 and 2, the outline of the connector apparatus 1 of 1st Embodiment is demonstrated. As shown in FIG. 1 , the connector device 1 includes a receptacle connector 10 (electrical connector 10 ) and a plug connector 100 . The socket connector 10 is mounted on the substrate 200 (refer to FIG. 2 ), for example, by soldering or the like. The plug connector 100 is connected to a coaxial cable SC (signal transmission member), and is fitted to the receptacle connector 10 . In the connector device 1, the plug connector 100 mounted on the end of the coaxial cable SC is fitted with the socket connector 10 mounted on the substrate 200, so that the electrical circuit of the coaxial cable SC and the substrate 200 are electrically connected. connect. The substrate 200 is, for example, a printed circuit board, but is not limited to this. In addition, instead of the coaxial cable SC, other signal transmission means for transmitting signals of various electronic devices may be used.

In the following description, the mating direction of the receptacle connector 10 and the plug connector 100 of the connector device 1 may be referred to as the "Z direction", and the axial direction of the coaxial cable SC in the mated state may be referred to as the "X direction". ”, and the direction orthogonal to the Z direction and the X direction is referred to as the “Y direction” for description. In addition, regarding the Z direction, for example, in the state shown in FIG. 1 , the direction in which the plug connector 100 is positioned is “up”, and the direction in which the receptacle connector 10 is positioned is “down”. In addition, regarding the X direction, the direction for positioning the end portion of the plug connector 100 to which the coaxial cable SC is attached may be referred to as "front", and the direction for positioning the opposite end portion is referred to as "rear".

Next, the details of the receptacle connector 10 of the first embodiment will be described with reference to FIGS. 3 to 8 . As shown in FIGS. 3( a ) to 3 ( c ), the receptacle connector 10 includes a signal contact 11 , a ground contact 12 , and a housing 13 . In the first embodiment, the ground contact 12 is formed separately from the case 13 .

The signal contact 11 is installed so as to be surrounded by the housing 13 . The signal contact 11 is also arranged in the center of the socket connector 10 . The ground contact 12 is arranged so as to surround the signal contact 11 and the casing 13 .

As shown in FIG. 4( a ) and FIG. 4( b ), the signal contact 11 is a cylindrical conductor. The signal contact 11 is formed of, for example, a thin plate-shaped metal member. The signal contact 11 is electrically connected to the signal contact 101 of the plug connector 100 (refer to FIG. 8( b )).

The signal contact 11 has: a contact part 111 extending in a direction away from the substrate 200 (upward direction); and a terminal part 112 extending along the substrate 200 by being drawn out from the lower end of the contact part 111 .

The contact portion 111 is formed in a cylindrical shape with the Z direction as the axial direction. The outer peripheral surface of the contact portion 111 is in contact with the signal contact 101 of the plug connector 100 (refer to FIG. 8( b )).

The terminal portion 112 is formed in a rectangular shape. For example, the terminal portion 112 is formed so that the length in the Y direction when viewed from the Z direction is shorter than the length in the X direction. The terminal portion 112 is connected to the lower end of the contact portion 111, and extends forward in the X direction (in the direction away from the inner conductor SC1 of the coaxial cable SC (refer to FIG. 8(b)), and is connected to the signal terminal portion (not shown) of the substrate 200. icon).

Returning to FIG. 3( a ), the terminal portion 112 is accommodated in the area surrounded by the ground contact 12 . In addition, the terminal portion 112 is exposed to the outside, that is, the exposed portion 11x, which is a front end region. To be exposed to the outside means to be visible from the outside, for example. More specifically, when the receptacle connector 10 is planarly viewed, the exposed portion 11x is arranged so as to be visually recognized. The exposed portion 11x is a contact area between the terminal portion 112 and the signal terminal portion (not shown).

As shown in FIGS. 5( a ) to 5 ( c ), the ground contact 12 has a conductor having a cylindrical shape arranged in the center of a single side of a rectangular plate shape. When the ground contact 12 is viewed from above, the central region of the ground contact 12 is hollowed out into a substantially circular shape. The ground contact 12 is electrically connected to the ground contact 102 of the plug connector 100 (refer to FIG. 8( b )).

The ground contact 12 has: a vertical wall portion 121, which surrounds the contact portion 111 without a seam; around. In addition, the ground contact 12 has a protruding locking portion 123 that protrudes toward the region surrounded by the vertical wall portion 121 to lock the housing 13 with respect to the ground contact 12 .

The standing wall portion 121 is formed in a cylindrical shape with the Z direction as the axial direction. The vertical wall portion 121 accommodates the casing 13 in its cylindrical hole. The vertical wall portion 121 surrounds the periphery of the casing 13 without a seam, and surrounds the contact portion 111 of the signal contact 11 without a seam. On the outer peripheral surface 121a of the standing wall portion 121, a fitting recess 12x that is concave toward the center of the axial direction of the standing wall portion 121 is formed over the entire circumference thereof. The fitting concave portion 12x is fitted with a fitting convex portion 102x formed on the outer periphery of the ground contact 102 of the plug connector 100 (see FIG. 8( b )). The inner peripheral surface 121b of the vertical wall portion 121 is in contact with the outer peripheral surface 13a of the casing 13 described later, except for a region where the casing 13 is not formed (see Fig. 8(b) ).

A front end portion 121 c that is an end portion (upper end portion) in a direction away from the substrate 200 is formed on the vertical wall portion 121 . The end here does not mean only the front end, but also includes the area near the front end. The front end portion 121 c of the upright wall portion 121 is formed so as to be curved toward the region surrounded by the upright wall portion 121 . The front end portion 121c is in contact with the contact portion 132b of the casing 13 described later in a region close to the inner peripheral surface 121b. By being in contact with each other in this way, the distal end portion 121c assists in suppressing the movement of the casing 13 relative to the upper direction.

The substrate connecting portion 122 is formed in a plate shape, is continuous with the lower end of the upright wall portion 121 , extends radially outward along the substrate 200 , and surrounds the periphery of the upright wall portion 121 without joints. The board connection portion 122 is disposed on the board 200 (see FIG. 2 ), and is connected to a ground terminal portion (not shown) of the board 200 .

The ground contact 12 is formed by integrally forming the vertical wall portion 121 and the board connecting portion 122 by drawing. For example, the ground contact 12 is formed integrally with the vertical wall portion 121 , which is a side portion, and the board connecting portion 122 , which is a flange portion, by performing drawing processing (eg, cylindrical drawing processing) on a metal plate. Since the ground contact 12 is formed by drawing, no seam is formed between the vertical wall portion 121 and the board connection portion 122 . In addition, the standing wall portion 121 is formed to be continuous with the board connecting portion 122 so as to be erected from the board connecting portion 122 .

The locking portion 123 is a protrusion protruding toward the region surrounded by the standing wall portion 121 . For example, the locking portion 123 protrudes from the front end portion 121 c , which is an end portion of the upright wall portion 121 in the direction away from the substrate 200 , toward a region surrounded by the upright wall portion 121 . The locking portion 123 is formed integrally with the front end portion 121c in succession with the front end portion 121c. The locking portion 123 is locked to the casing 13 to restrain the casing 13 from moving (eg, rotating) along the inner peripheral surface 121 b of the vertical wall portion 121 . A pair of the locking portions 123 are provided so as to face each other with the contact portion 111 sandwiched therebetween. That is, a pair of locking portions 123 is provided so as to protrude toward the center of the receptacle connector 10 . As shown in the present embodiment, two or more pairs of the locking portions 123 may be provided.

As shown in FIGS. 6( a ) to 6 ( c ), the case 13 is formed as a semi-cylindrical insulating member having a bottom surface whose axial direction is the Z direction. The case 13 is made of resin, for example. The housing 13 is integrally formed with the signal contact 11 by insert molding, for example, in this embodiment. Therefore, FIGS. 4( a ), 4 ( b ), and FIGS. 6 ( a ) to 6 ( c ) show the signal contacts 11 and the housing 13 before integration.

The housing 13 is disposed between the signal contact 11 and the ground contact 12 and holds the signal contact 11 and the ground contact 12 . The casing 13 is configured to surround a part of the signal contact 11 and to be surrounded by the vertical wall portion 121 of the ground contact 12 . The outer peripheral surface 13a of the casing 13 is in contact with the inner peripheral surface 121b of the vertical wall portion 121 except for the region where the casing 13 is not formed (see Fig. 8(b) ).

The case 13 has a base portion 131 , a columnar portion 132 , and a press-fit portion 133 . The base portion 131 is formed in a semi-circular plate shape, and is disposed at one end of the casing 13 . The base portion 131 has an upper surface 131 a facing the plug connector 100 and a bottom surface 131 b facing the substrate 200 . On the base portion 131 from the center of the upper surface 131a to the center of the bottom surface 131b, a hole for mounting the contact portion 111, that is, a support portion 13y is formed.

The columnar portion 132 is formed in a semi-cylindrical shape, and the base portion 131 and the base portion 131 are continuously formed so as to be erected from the base portion 131 . The columnar portion 132 extends in the Z direction along the inner peripheral surface 121 b of the standing wall portion 121 . The front end (upper end) of the columnar portion 132 may be shaped to reach the front end portion 121c of the upright wall portion 121, or may be formed to not reach the front end portion 121c (extend only below the front end portion 121c). The front end of the columnar portion 132 is formed so as not to exceed the front end portion 121c of the vertical wall portion 121 in the direction away from the substrate 200 (upward direction) (see FIG. 3( c )).

A concave portion 132 a to be locked by the locking portion 123 is formed in the housing 13 . More specifically, the columnar portion 132 is formed with a concave portion 132 a that is locked to the locking portion 123 . For example, a plurality of recesses 132 a are formed at the upper end of the columnar portion 132 at a predetermined interval along the circumferential direction of the columnar portion 132 . The concave portion 132 a is formed so as to be concave corresponding to the shape of the locking portion 123 from the upper end portion of the columnar portion 132 toward the substrate 200 . The concave portion 132 a is formed at a position corresponding to the locking portion 123 , except for the region where the casing 13 is not formed.

An abutting portion 132b is formed on the columnar portion 132 to be in contact with a region of the front end portion 121c of the vertical wall portion 121 that is close to the inner peripheral surface 121b. For example, the contact portion 132b in the upper end portion spans the entire circumference of the region where the casing 13 is formed, and is formed in a stepped shape corresponding to the region of the front end portion 121c of the vertical wall portion 121 close to the inner peripheral surface 121b. The movement of the housing 13 relative to the upward direction is assisted by the contact of the contact portion 132b with the front end portion 121c.

The press-fit portion 133 is a convex surface facing the inner peripheral surface 121 b of the standing wall portion 121 . As shown in FIG. 7 , the housing 13 is formed separately from the ground contact 12 . The casing 13 is inserted into the area surrounded by the vertical wall portion 121 , and is press-fitted and fixed with respect to the ground contact 12 . Here, the press-fit portion 133 presses the inner peripheral surface 121 b of the vertical wall portion 121 to fix the ground contact 12 and the case 13 . By fixing in this way, the casing 13 can be prevented from falling off from the ground contact 12 . A plurality of (for example, four) press-fit portions 133 are provided on the outer peripheral surface 13 a of the casing 13 .

Returning to FIG. 3( a ), the casing 13 is provided only in the region surrounded by the vertical wall portion 121 . When the receptacle connector 10 is viewed from above, the housing 13 is only disposed in an area closer to the contact portion 111 than the front end of the terminal portion 112 in the extending direction of the terminal portion 112 . The case 13 is formed so as to expose the exposed portions 11x of the signal contacts 11 to the outside. For example, the case 13 may be formed so that the exposed portion 11x is exposed to the outside by having a configuration in which a part is cut away.

In the receptacle connector 10 , the surrounding of the signal contact 11 is seamlessly surrounded by the ground contact 12 . In other words, the receptacle connector 10 has a completely enclosed structure around the signal contacts 11 . Such a receptacle connector 10 has a structure in which the signal from the signal contact 11 is not easily leaked to the outside of the ground contact 12 (a structure that is less likely to generate noise).

[Mating state of socket connector and plug connector] Next, with reference to FIGS. 8( a ) and 8 ( b ), the connector device 1 in the state in which the receptacle connector 10 and the plug connector 100 are fitted to each other will be described. Fig. 8(a) is a plan view, and Fig. 8(b) is a cross-sectional view taken along line A-A of (a). As shown in FIG. 8( b ), the plug connector 100 includes a signal contact 101 , a ground contact 102 , and a housing 103 .

The signal contact 101 is electrically connected to the signal contact 11 of the receptacle connector 10 . The signal contact 101 is installed inside the casing 103 . The signal contact 101 is connected to the inner conductor SC1 of the coaxial cable SC, and is also connected to the contact portion 111 of the signal contact 11 .

The ground contact 102 extends in the X direction. One side in the extending direction of the ground contact 102 is formed into a cylindrical shape that fits into the ground contact 12 of the receptacle connector 10 . The other side of the extending direction of the ground contact 102 is connected to the outer conductor of the coaxial cable SC. In a region of the ground contact 102 close to the lower end of the cylindrical shape, a fitting convex portion 102x is formed that spans the entire circumference thereof and protrudes toward the center in the radial direction.

The case 103 is formed in a cylindrical shape, and holds the signal contact 101 and the ground contact 102 in an insulated state. The outer peripheral surface of the housing 103 is in contact with the inner peripheral surface of the ground contact 102 .

The fitting concave portion 12x in the vertical wall portion 121 of the receptacle connector 10 is engaged with the fitting convex portion 102x in the ground contact 102 of the plug connector 100 . Thereby, the receptacle connector 10 and the plug connector 100 are fitted into each other. In the mated state, the terminal portion 112 is accommodated in an area of the plug connector 100 surrounded by the ground contact 102 .

In the mated state, the signal contact 101 connected to the inner conductor SC1 of the coaxial cable SC is in contact with the contact portion 111 of the receptacle connector 10 . The contact portion 111 is connected to a signal terminal portion (not shown) of the substrate 200 via the terminal portion 112 . Thereby, the signal transmission circuit of the connector device 1 is constituted.

In addition, in the fitted state, the ground contact 102 connected to the outer conductor of the coaxial cable SC is in contact with the vertical wall portion 121 of the receptacle connector 10 . The vertical wall portion 121 is connected to a ground terminal portion (not shown) of the substrate 200 via the substrate connecting portion 122 . Thereby, the ground circuit of the connector device 1 is constituted.

[Effects of this embodiment] Next, the effect of the above-mentioned receptacle connector 10 (electrical connector 10 ) will be described.

The electrical connector 10 of the present embodiment is an electrical connector 10 mounted on a substrate 200, and includes: a signal contact 11 having: a contact portion 111 extending in a direction away from the substrate 200; and a terminal portion 112 having a Extending from the contact portion 111 along the substrate 200; the ground contact 12 has: a vertical wall portion 121 that surrounds the contact portion 111 without seams; and a substrate connecting portion 122, which is integrally formed with the vertical wall portion 121, along the The substrate 200 extends to the outside and surrounds the surrounding of the vertical wall portion 121 without seams;

In the electrical connector 10 of the present embodiment, in the direction away from the substrate 200 , the periphery of the contact portion 111 of the signal contact 11 is seamlessly surrounded by the vertical wall portion 121 of the ground contact 12 . In addition, in the direction along the substrate 200 , the surrounding of the vertical wall portion 121 is seamlessly surrounded by the substrate connecting portion 122 of the ground contact 12 . Furthermore, an insulating casing 13 is interposed between the signal contact 11 and the ground contact 12 . With this configuration, since the signal contact 11 is surrounded by the ground contact 12 without a seam, the signal from the signal contact 11 is less likely to leak to the outside of the ground contact 12 (the structure is less likely to generate noise). Thereby, the EMI characteristic of the electrical connector can be improved.

In the electrical connector 10 of the present embodiment, the housing 13 has a columnar portion 132 extending along the inner peripheral surface 121 b of the vertical wall portion 121 . According to such a configuration, the contact area between the case 13 and the standing wall portion 121 is increased. In this way, the housing 13 can more properly hold the signal contact 11 and the ground contact 12 .

In the electrical connector 10 of the present embodiment, the ground contact 12 has a protruding locking portion 123 protruding toward the region surrounded by the vertical wall portion 121 to lock the housing 13 with respect to the ground contact 12 . According to such a configuration, the upright wall portion 121 is engaged with the columnar portion 132 extending along the inner peripheral surface 121 b of the upright wall portion 121 by the locking portion 123 protruding to the region surrounded by the upright wall portion 121 . Thereby, since the case 13 is prevented from falling off, the case 13 can be held more appropriately.

In the electrical connector 10 of the present embodiment, the locking portion 123 protrudes from the end portion of the vertical wall portion 121 in the direction away from the substrate 200 , that is, the front end portion 121 c , and protrudes toward the area surrounded by the vertical wall portion 121 to form a latch on the housing 13 . It stops at the concave portion 132 a of the locking portion 123 . By fitting the protrusion-shaped locking portion 123 to the recessed portion 132 a formed in the columnar portion 132 , movement (eg, rotation) of the housing 13 along the inner peripheral surface 121 b of the vertical wall portion 121 is suppressed. Thereby, the case 13 can be held more appropriately.

In the electrical connector 10 of the present embodiment, the front end portion 121 c of the upright wall portion 121 is formed so as to be bent toward the region surrounded by the upright wall portion 121 . According to this configuration, in the region surrounded by the vertical wall portion 121 , the housing 13 along the inner peripheral surface 121 b is in contact with the front end portion 121 c , so that the movement of the housing 13 relative to the direction away from the substrate 200 is assisted to be suppressed. . Thereby, the case 13 can be held more appropriately.

In the electrical connector 10 of the present embodiment, a pair of the locking portions 123 are provided so as to face each other with the contact portions 111 sandwiched therebetween. Since the pair of locking portions 123 are opposed to each other around the contact portion 111, the movement of the case 13 is restrained in a balanced manner, so that the case 13 can be held more appropriately.

In the electrical connector 10 of the present embodiment, the ground node 12 is formed separately from the housing 13 , and the housing 13 has a pressing-in portion of a convex surface facing the inner peripheral surface 121 b of the vertical wall portion 121 . Since the ground contact 12 and the housing 13 are formed separately, the electrical connector can be manufactured in an assembled manner, so that the manufacturing equipment can be simplified. In addition, since the inner peripheral surface 121b of the vertical wall portion 121 of the ground contact 12 is pressed by the press-fit portion, which is a convex surface, the fixing strength of the casing 13 is increased, so that the casing 13 can be held more appropriately.

In the electrical connector 10 of the present embodiment, the ground contact 12 is formed integrally with the vertical wall portion 121 and the substrate connection portion 122 by drawing. Through the drawing process, the vertical wall portion 121 of the ground contact 12 and the substrate connecting portion 122 are integrally formed, and no joint is formed between the vertical wall portion 121 and the substrate connecting portion 122 . Thereby, the manufacturing easiness of the ground contact 12 can be improved.

[Second Embodiment] 9, regarding the details of the receptacle connector 20 (electrical connector 20) of the second embodiment, the points different from the receptacle connector 10 (first embodiment) will be mainly described. As shown in FIGS. 9( a ) to 9 ( c ), the receptacle connector 20 includes a signal contact 11 , a ground contact 12 , and a housing 13 . In the receptacle connector 20, the signal contact 11, the ground contact 12, and the housing 13 are integrally formed by insert molding.

The locking portion 123 has a tapered shape whose thickness gradually becomes thinner toward the contact portion 111 (that is, the region of the locking portion 123 becomes thinner toward the contact portion 111 ).

The housing 13 is integrally formed with the ground contact 12 by insert molding so as to enclose the surrounding of the locking portion 123 . For example, the casing 13 is filled along the inner peripheral surface 121 b of the vertical wall portion 121 to form the columnar portion 132 . In addition, the casing 13 is filled along the tapered shape, that is, around the locking portion 123 , and the columnar portion 132 and the locking portion 123 are fixed. The front end of the locking portion 123 may also reach the inner peripheral surface of the columnar portion 132 of the housing 13 (or penetrate the columnar portion 132 ), or may not reach.

[Effects of this embodiment] In the electrical connector 20 of the present embodiment, the housing 13 is integrally formed with the ground contact 12 by insert molding so as to enclose the surrounding of the locking portion 123 . By fixing the columnar portion 132 and the locking portion 123, the housing 13 can be held more appropriately.

[third embodiment] 10 and 11, the outline of the connector device 3 of the third embodiment will be described. As shown in FIG. 10 , the connector device 3 includes a receptacle connector 30 (electrical connector 30 ) and a plug connector 300 . Hereinafter, with regard to the details of the connector device 3, points different from the connector device 1 (first embodiment) will be mainly described.

The connector device 3 is a multi-core connector having a plurality of connecting terminals. The plug connector 300 is connected to a plurality of coaxial cables SC (signal transmission members). When the receptacle connector 30 and the plug connector 300 are mated with each other, the shape of the plug connector 300 viewed from the receptacle connector 30 and the shape of the receptacle connector 30 viewed from the plug connector 300 are similar to a rectangle. Hereinafter, the direction (Y direction) along the long side of the rectangle is referred to as the long side direction, and the direction (X direction) along the short side of the rectangle is referred to as the short side direction.

Next, the details of the receptacle connector 30 of the third embodiment will be described with reference to FIGS. 12 to 17 . As shown in FIGS. 12( a ) to 12 ( c ), the receptacle connector 30 includes a signal contact 31 , a ground contact 32 , and a housing 33 .

The signal contact 31 is installed so as to be surrounded by the housing 33 . The signal contacts 31 are provided in plural (for example, three). As for the signal contact 31 , for example, one signal contact 31 is arranged in the center of the receptacle connector 30 , and two signal contacts 31 are arranged along the longitudinal direction so as to sandwich the central signal contact 31 . All the signal contacts 31 are arranged such that the contact direction viewed from the plug connector 300 is in the same direction.

As shown in FIGS. 13( a ) and 13 ( b ), the signal contact 31 has a pair of protruding conductors. The protrusions of the signal contacts 31 protrude in the Z direction, respectively. The signal contact 31 is connected to the connection portion with the substrate 200 and the contact portion with the signal contact 301 of the plug connector 300 to each other. The signal contacts 31 are formed by, for example, bending a metal plate or the like.

The signal contact 31 has: a contact portion 311 extending in a direction away from the substrate 200 (upward direction); and a terminal portion 312 extending along the substrate 200 by being drawn out from the lower end of the contact portion 311 .

The contact portion 311 has a first portion 311a, a second portion 311b, and a connecting portion 311c. The first portion 311a and the second portion 311b protrude toward the plug connector 300 in the Z direction, respectively. The first portion 311a and the second portion 311b extend in the connecting direction so as to face each other in the short-side direction. The first portion 311a and the second portion 311b are in contact with each other so as to sandwich the signal contact 301 of the plug connector 300 (see FIG. 17( b )). The connecting portion 311c connects the lower end of the first portion 311a and the lower end of the second portion 311b.

The terminal portion 312 is formed in a rectangular shape. For example, the terminal portion 312 is formed so that the length in the Y direction when viewed from the Z direction is shorter than the length in the X direction. The terminal portion 312 is connected to the lower end of the contact portion 311, and extends in front of the X direction (the direction away from the inner conductor SC1 of the coaxial cable SC (refer to FIG. 17(b)), and is connected to the signal terminal portion (not shown in FIG. 17(b)) of the substrate 200. icon).

Returning to FIG. 12( a ), the terminal portion 312 is accommodated in the area surrounded by the ground contact 32 . In addition, the front end region of the terminal portion 312, that is, the exposed portion 31x is exposed to the outside. The exposed portion 31x is the contact area with the signal terminal portion (not shown) in the terminal portion 312 .

As shown in FIGS. 14( a ) to 14 ( c ), the ground contact 32 has a conductor having a shape of a square tube arranged in the center of one side of a rectangular plate-like shape. When the ground contact 32 is viewed from above, the central area of the ground contact 32 is hollowed out into a rectangle. The ground contact 32 is electrically connected to the ground contact 302 of the plug connector 300 (refer to FIG. 17( b )). The ground contact 32 has a pair of long sides in the long-side direction and a pair of short sides in the short-side direction.

The ground contact 32 has: a vertical wall portion 321, which surrounds the contact portion 311 without a seam; around. In addition, the ground contact 32 has a protruding locking portion 323 that protrudes toward the region surrounded by the vertical wall portion 321 to lock the housing 33 with respect to the ground contact 32 .

The standing wall portion 321 is formed in a rectangular tube shape with the Z direction being the axial direction. The vertical wall portion 321 accommodates the casing 33 in the cylindrical hole thereof. The vertical wall portion 321 surrounds the periphery of the casing 33 without a seam, and surrounds the contact portion 311 of the signal contact 31 without a seam. On the outer peripheral surface 321a of the standing wall portion 321, a fitting recess portion 32x that is recessed toward the center in the axial direction of the standing wall portion 321 is formed over the entire circumference thereof. The fitting concave portion 32x is fitted with the fitting convex portion 302x formed on the outer periphery of the ground contact 302 of the plug connector 300 (see FIG. 17( b )). The inner peripheral surface 321b of the vertical wall portion 321 is in contact with the outer peripheral surface 33a of the casing 33 described later, except for a region where the casing 33 is not formed (see FIG. 17(b) ).

A front end portion 321 c that is an end portion (upper end portion) in a direction away from the substrate 200 is formed on the vertical wall portion 321 . The end here does not mean only the front end, but also includes the area near the front end. The front end portion 321 c of the upright wall portion 321 is formed so as to be curved toward the region surrounded by the upright wall portion 321 . The front end portion 321c is in contact with the contact portion 332b of the casing 33 described later in a region close to the inner peripheral surface 321b. By being in contact with each other in this way, the front end portion 321c assists in suppressing the movement of the casing 33 relative to the upward direction.

The substrate connecting portion 322 is formed in a plate shape, is continuous with the lower end of the upright wall portion 321 , extends radially outward along the substrate 200 , and surrounds the periphery of the upright wall portion 321 without joints. The board connection portion 322 is disposed on the board 200 (see FIG. 11 ), and is connected to a ground terminal portion (not shown) of the board 200 .

The ground contact 32 is formed integrally with the vertical wall portion 321 and the board connection portion 322 by drawing. For example, the ground contact 32 is formed integrally with the vertical wall portion 321 , which is the side portion, and the board connecting portion 322 , which is the flange portion, by subjecting the metal plate to drawing processing (eg, square tube drawing processing). Since the ground contact 32 is formed by drawing, no joint is formed between the vertical wall portion 321 and the board connecting portion 322 . In addition, the vertical wall portion 321 is formed in succession with the substrate connecting portion 322 so as to be erected from the substrate connecting portion 322 .

The locking portion 323 is a protrusion protruding toward the region surrounded by the standing wall portion 321 . For example, the locking portion 323 protrudes from the front end portion 321 c , which is an end portion of the upright wall portion 321 in the direction away from the substrate 200 , toward a region surrounded by the upright wall portion 321 . The locking portion 323 is continuous with the front end portion 321c and is integrally formed with the front end portion 321c. Since the locking portion 323 is locked to the casing 33 , the movement of the casing 33 along the inner peripheral surface 321 b of the vertical wall portion 321 is suppressed. In addition, a pair of locking portions 323 is provided so as to face each other with the contact portion 311 therebetween. That is, a pair of locking portions 123 is provided so as to protrude toward the center of the receptacle connector 10 . Two or more pairs of the locking portions 323 may also be provided.

As shown in FIGS. 15( a ) to 15 ( c ), the case 33 is formed as a rectangular insulating member. The case 33 is formed of resin, for example. In this embodiment, the housing 33 and the signal contact 31 are manufactured by an assembly method. For example, by insert molding, the housing 33 and the signal contact 31 can also be integrally formed.

The housing 33 is disposed between the signal contact 31 and the ground contact 32 and holds the signal contact 31 and the ground contact 32 . The casing 33 is arranged to surround a part of the signal contact 31 and to be surrounded by the vertical wall portion 321 of the ground contact 32 . The peripheral surface 33a of the casing 33 is in contact with the inner peripheral surface 321b of the vertical wall portion 321 except for the region where the casing 33 is not formed (refer to FIG. 17(b) )

The case 33 has a base portion 331 , a columnar portion 332 , and a press-fit portion 333 . The base portion 331 is formed in a rectangular shape, and is disposed in the center of the casing 33 . The base portion 331 has an upper surface 331 a facing the plug connector 300 and a bottom surface 331 b facing the substrate 200 . The base portion 331 is formed with a hole 33y for mounting the contact portion 311 in the longitudinal direction from the upper surface 331a to the bottom surface 331b. The number of the support portions 33y corresponding to the number of the signal contacts 31 (ie, three) is formed at positions corresponding to the positions where the signal contacts 31 are arranged. In addition, in this embodiment, three signal contacts 31 are formed, but one of them may be set as the ground contact 32 , and the ground contact 32 may be appropriately provided according to the number of the signal contacts 31 .

The columnar portion 332 is formed in a rectangular cylindrical shape, and is formed continuously to the base portion 331 so as to surround the outer periphery of the base portion 331 . The columnar portion 332 extends in the Z direction along the inner peripheral surface 321 b of the standing wall portion 321 . The front end (upper end) of the columnar portion 332 may have a shape that reaches the front end portion 321c of the vertical wall portion 321, or a shape that does not reach the front end portion 321c (only extends below the front end portion 121c). The front end of the columnar portion 332 is formed so as not to exceed the front end portion 321c of the upright wall portion 321 in the direction away from the substrate 200 (upward direction) (see FIG. 12( c )).

A concave portion 332 a to be locked by the locking portion 323 is formed in the casing 33 . More specifically, the columnar portion 332 is formed with a concave portion 332 a that is locked to the locking portion 323 . For example, a plurality of concave portions 332 a are formed at the upper end portion of the columnar portion 332 at predetermined intervals along the circumferential direction of the columnar portion 332 . The concave portion 332a is formed so as to be concave corresponding to the shape of the locking portion 323 from the upper end portion of the columnar portion 332 toward the substrate 200 . Moreover, the recessed part 332a is formed in the position corresponding to the locking part 323 except the area|region where the case 33 is not formed.

An abutting portion 332b is formed in the columnar portion 332 to be in contact with a region of the front end portion 321c of the vertical wall portion 321 close to the inner peripheral surface 321b. For example, the contact portion 332b in the upper end portion spans the entire circumference of the region where the housing 33 is formed, and is formed in a stepped shape corresponding to the region of the front end portion 321c of the vertical wall portion 321 close to the inner peripheral surface 321b. The movement of the housing 33 relative to the upward direction is assisted by the contact of the contact portion 332b with the front end portion 321c.

The press-fit portion 333 is a convex surface facing the inner peripheral surface 321 b of the standing wall portion 31 . As shown in FIG. 16 , the case 33 is formed separately from the ground contact 32 . The casing 33 is inserted into the area surrounded by the vertical wall portion 321 , and is press-fitted and fixed to the ground contact 32 . Here, the press-fit portion 333 presses the inner peripheral surface 321 b of the vertical wall portion 321 to fix the ground contact 32 and the case 33 . By fixing in this way, the casing 33 can be prevented from falling off from the ground contact 32 . A plurality of press-fit portions 333 are provided on the outer peripheral surface 33 a of the casing 33 (for example, four corresponding to the four corners of the casing 33 ).

Returning to FIG. 12( a ), the casing 33 is provided only in the region surrounded by the vertical wall portion 321 . When the receptacle connector 30 is viewed from above, the housing 33 is only disposed in a region closer to the contact portion 311 than the front end of the terminal portion 312 in the extending direction of the terminal portion 312 . The case 33 is formed so as to expose the exposed portion 31x of the signal contact 31 to the outside. The case 33 may be formed so that the exposed portion 31x is exposed to the outside by, for example, having a configuration in which a part is cut away. In such a plan view, by exposing the exposed portions 31x of the signal contacts 31 to the outside, when the receptacle connector 30 is mounted on the substrate 200, the connection between the signal contacts 31 and the substrate 200 can be visually recognized.

In the receptacle connector 30 , the surrounding of the signal contact 31 is seamlessly surrounded by the ground contact 32 . In other words, the receptacle connector 30 becomes a completely enclosed structure around the signal contacts 31 . Such a receptacle connector 30 has a structure in which the signal from the signal contact 31 is not easily leaked to the outside of the ground contact 32 (a structure that is less likely to generate noise).

[Mating state of socket connector and plug connector] Next, the connector device 3 in the state in which the receptacle connector 30 and the plug connector 300 are fitted to each other will be described with reference to FIGS. 17( a ) and 17 ( b ). Fig. 17(a) is a plan view, and Fig. 17(b) is a cross-sectional view taken along the line A-A of (a). As shown in FIG. 17( b ), the plug connector 300 includes a signal contact 301 , a ground contact 302 , and a housing 303 .

The signal contact 301 is electrically connected to the signal contact 31 of the receptacle connector 30 . The signal contact 301 is installed inside the casing 303 . Moreover, the signal contact 301 is connected to the inner conductor SC1 of the coaxial cable SC, and is connected so as to be sandwiched by the contact portion 311 of the signal contact 31 .

The ground contact 302 extends in the X direction. One side in the extending direction of the ground contact 302 is formed into a rectangular cylindrical shape that fits into the ground contact 32 of the receptacle connector 30 . The other side of the extending direction of the ground contact 302 is connected to the outer conductor of the coaxial cable SC. In a region of the ground contact 302 close to the lower end of the square cylinder shape, a fitting convex portion 302x that spans the entire circumference thereof and protrudes toward the center in the radial direction is formed.

The case 303 is formed in a rectangular cylindrical shape, and holds the signal contact 301 and the ground contact 302 in an insulated state. The outer peripheral surface of the housing 303 is in contact with the inner peripheral surface of the ground contact 302 .

The fitting concave portion 32x of the vertical wall portion 321 of the receptacle connector 30 is engaged with the fitting convex portion 302x of the ground contact 302 of the plug connector 300 . Thereby, the receptacle connector 30 and the plug connector 300 are in a state of being fitted to each other. In the mated state, the terminal portion 312 is accommodated in an area of the plug connector 300 surrounded by the ground contact 302 .

In the mated state, the signal contact 301 connected to the inner conductor SC1 of the coaxial cable SC is in contact with the contact portion 311 of the receptacle connector 30 . The contact portion 311 is connected to a signal terminal portion (not shown) of the substrate 200 via the terminal portion 312 . Thereby, the signal transmission circuit of the connector device 3 is constituted.

In addition, in the mated state, the ground contact 302 to which the outer conductor of the coaxial cable SC is connected is in contact with the vertical wall portion 321 of the receptacle connector 30 . The vertical wall portion 321 is connected to a ground terminal portion (not shown) of the substrate 200 via the substrate connecting portion 322 . Thereby, the ground circuit of the connector device 3 is constituted. In addition, the plug connector 300 which is the counterpart connector of the third embodiment may be connected to the coaxial cable SC, but may be a counterpart connector connected to, for example, another substrate to which a flexible printed circuit (FPC: Flexible Printed Circuit) is connected.

Although the embodiment has been described above, the present disclosure is not limited to the above-mentioned embodiment, and various changes can be made without departing from the gist thereof.

1: Connector device 3: Connector device 10: Socket connector (electrical connector) 11: Signal contact 11x: exposed part 12: Ground contact 12x: Fitting recess 13: Shell 13a: Peripheral surface 13y: Support Department 20: Socket connector (electrical connector) 30: Socket connector (electrical connector) 31: Signal contact 31x: exposed part 32: ground contact 32x: Fitting recess 33: Shell 33a: Peripheral surface 33y: Support Department 100: Plug Connector 101: Signal contact 102: Ground Contact 102x: Fitting convex part 103: Shell 111: Contact part 112: Terminal part 121: Standing wall 121a: Peripheral surface 121b: inner peripheral surface 121c: Front end 122: Board connection part 123: Locking part 131: Base 131a: upper surface 131b: Underside 132: Columnar part 132a: Recess 132b: abutment 133: Press-in part 200: Substrate 300: Plug Connector 301: Signal contact 302: Ground Contact 302x: Fitting convex part 303: Shell 311: Contact Department 311a: Part 1 311b: Part 2 311c: Links 312: Terminal part 321: Standing Wall 321a: Peripheral surface 321b: inner peripheral surface 321c: Front end 322: Board connection part 323: Locking part 331: Base 331a: Upper surface 331b: Underside 332: Columnar part 332a: Recess 332b: abutment 333: Press-in part SC: coaxial cable SC1: Internal conductor

FIG. 1 is a perspective view of the connector device according to the first embodiment. FIG. 2 is a perspective view of a receptacle connector mounted on a printed circuit board. FIG. 3 is a diagram showing the receptacle connector. Fig. 3(a) is a top view, Fig. 3(b) is a bottom view, and Fig. 3(c) is a perspective view. FIG. 4 is a diagram showing the signal contacts of the receptacle connector. Fig. 4(a) is a plan view, and Fig. 4(b) is a perspective view. Figure 5 is a diagram showing the ground contact of the receptacle connector. Fig. 5(a) is a top view, Fig. 5(b) is a bottom view, and Fig. 5(c) is a perspective view. FIG. 6 is a diagram showing the housing of the receptacle connector. Fig. 6(a) is a top view, Fig. 6(b) is a bottom view, and Fig. 6(c) is a perspective view. FIG. 7 is a perspective view showing the receptacle connector before being press-fitted. FIG. 8 is a diagram showing a fitting state of the plug connector and the receptacle connector. Fig. 8(a) is a plan view, and Fig. 8(b) is a cross-sectional view taken along the line A-A of Fig. 8(a). FIG. 9 is a diagram showing a receptacle connector of the second embodiment. Fig. 9(a) is a plan view, Fig. 9(b) is a bottom view, and Fig. 9(c) is a perspective view. Fig. 10 is a perspective view of the connector device of the third embodiment. FIG. 11 is a perspective view of a socket connector mounted on a printed circuit board. Figure 12 is a diagram showing the socket connector. Fig. 12(a) is a plan view, Fig. 12(b) is a bottom view, and Fig. 12(c) is a perspective view. Figure 13 is a diagram showing the signal contacts of the receptacle connector. Fig. 13(a) is a plan view, and Fig. 13(b) is a perspective view. Figure 14 is a diagram showing the ground contact of the socket connector. Fig. 14(a) is a plan view, Fig. 14(b) is a bottom view, and Fig. 14(c) is a perspective view. Figure 15 is a diagram showing the housing of the receptacle connector. Fig. 15(a) is a plan view, Fig. 15(b) is a bottom view, and Fig. 15(c) is a perspective view. FIG. 16 is a perspective view showing the receptacle connector before being press-fitted. FIG. 17 is a diagram showing a fitting state of the plug connector and the receptacle connector. Fig. 17(a) is a plan view, and Fig. 17(b) is a cross-sectional view taken along line B-B of Fig. 17(a).

10: Socket connector (electrical connector)

11: Signal contact

11x: exposed part

12: Ground contact

13: Shell

111: Contact part

112: Terminal part

121: Standing wall

122: Board connection part

123: Locking part

Claims (9)

An electrical connector, which is mounted on a substrate, and has: a signal contact, which has: a contact portion extending in a direction away from the substrate; and a terminal portion extending along the substrate in a manner of being drawn out from the contact portion; A ground contact comprising: a vertical wall portion that surrounds the contact portion without a seam; and a substrate connection portion that is integrally formed with the vertical wall portion, extends outward along the substrate and surrounds the vertical wall portion without a seam ;and An insulating case is disposed between the signal contact and the ground contact, and holds the signal contact and the ground contact. The electrical connector of claim 1, wherein the housing has a columnar portion extending along the inner peripheral surface of the vertical wall portion. The electrical connector according to claim 1 or 2, wherein the ground contact has a protruding locking portion protruding toward the region surrounded by the vertical wall portion, and the housing is locked to the ground contact. The electrical connector of claim 3, wherein The locking portion protrudes from the end portion of the vertical wall portion in the direction away from the base plate, that is, the front end portion, toward the area surrounded by the vertical wall portion; The said case is formed with the recessed part which latches to the said latching part. The electrical connector of claim 4, wherein the front end portion of the upright wall portion is formed so as to be curved toward a region surrounded by the upright wall portion. The electrical connector according to any one of claims 3 to 5, wherein a pair of the latching portions are provided so as to face each other with the contact portions sandwiched therebetween. The electrical connector of any one of claims 2 to 6, wherein the ground contact is formed separately from the housing; The said case has the press-fit part of the convex surface which faces the inner peripheral surface of the said vertical wall part. The electrical connector of claim 3, wherein the housing is integrally formed with the ground contact by insert molding so as to enclose the surrounding of the locking portion. The electrical connector according to any one of claims 1 to 8, wherein the ground contact is formed integrally with the vertical wall portion and the substrate connection portion by drawing.

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