JP2021026981A - Header and connector using the same - Google Patents

Abstract

To suppress deterioration of a high frequency characteristic in an RF signal.SOLUTION: A header 30 fixed to a socket 20, comprises: a header housing 31 having a first side wall part 31c extended in an x direction from a base part 31f; and a plurality of terminals 32b provided to a first side wall part and arranged in a y direction orthogonal to the x direction. The terminal 32b includes: a first extension part 32b1 extended along the x direction; a second extension part 32b2 extended in a direction opposite to the x direction and facing the first extension part while nipping the first side wall part; a first end part 32b3 connected to the second extension part via the first extension part; and a second end part 32b4 connected to the first extension part via the second extension part. The first extension part and the first end part are positioned in a z direction orthogonal to the x direction and the y direction with respect to the second extension part. A distance D1 to the first end part 32b3 from a center line of the x direction, which divides a distance between the first extension part and the second extension part into two is larger than a distance D2 from the center line to the second end part 32b4.SELECTED DRAWING: Figure 19

Description

The present invention relates to a header and a connector using the header.

Conventionally, a connector having a socket provided with a plurality of socket-side terminals on the socket body and a header having a plurality of header-side terminals provided on the header body has been known (see, for example, Patent Document 1).

In the connector described in Patent Document 1, the connector (socket) held on the first board and the header held on the second board are fitted in a state of facing each other, and the corresponding terminals come into contact with each other. By conducting electricity, the circuit patterns of the board to which the terminals are connected are electrically connected to each other.

By the way, a radio frequency (RF) signal may be applied to the terminals of the connector (see, for example, Patent Documents 2 and 3).

In this case, when an RF signal is applied to the terminal of the connector, it is required to suppress unnecessary radiation from the terminal and noise mixed in the terminal. Further, when different RF signals are applied to a plurality of terminals of the connector, it is also necessary to suppress interference between these RF signals.

JP-A-2018-152190 Japanese Unexamined Patent Publication No. 2019-040823 JP-A-2017-033655

Further, in the conventional connector in which the socket and the header are fitted to each other, there is a problem that the high frequency characteristic deteriorates when the RF signal is connected.

In view of the above-mentioned conventional problems, an object of the present invention is to make it possible to suppress deterioration of high frequency characteristics in an RF signal in a socket or a connector to which an RF signal is applied.

In order to achieve the above object, the present invention relates to the connection of the header terminal with the socket terminal at the two extension portions in the direction parallel to the side surface of the header, from the center line that bisects the distance between the two extension portions. The distance to the first end on the outside of the terminal is larger than the distance from the center line to the second end on the inside of the header terminal.

Specifically, the present invention targets a header and a connector using the header, and has taken the following solutions.

That is, the first aspect of the present invention targets a header that fits into a socket, and the header includes a header housing having a base portion and a first side wall portion extending in the x direction from the base portion, and a first side wall portion. It is provided with a plurality of terminals arranged in the y direction orthogonal to the x direction. Each of the plurality of terminals has a first stretched portion extending along the x direction, a second stretched portion extending in the opposite direction in the x direction, and facing the first stretched portion with the first side wall portion interposed therebetween. It includes a first end portion connected to the second stretched portion via the first stretched portion and a second end portion connected to the first stretched portion via the second stretched portion. The first stretched portion and the first end portion are located in the z direction orthogonal to the x direction and the y direction with respect to the second stretched portion. The distance from the center line in the x direction, which bisects the distance between the first stretched portion and the second stretched portion, to the first end portion is larger than the distance from the center line to the second end portion.

A second aspect of the invention is intended for a connector comprising a socket and a header that fits the socket, the header being a base and a first side wall extending from the base in the x direction and towards the socket. It has a header housing having a portion, and a plurality of first terminals provided on the first side wall portion and arranged in the y direction orthogonal to the x direction. Each of the plurality of first terminals has a first extending portion extending along the x direction and a second extending portion extending in the opposite direction in the x direction and facing the first extending portion with the first side wall portion interposed therebetween. , A first end portion connected to the second stretched portion via the first stretched portion, and a second end portion connected to the first stretched portion via the second stretched portion. The first stretched portion and the first end portion are located in the z direction orthogonal to the x direction and the y direction with respect to the second stretched portion. The distance from the center line in the x direction, which bisects the distance between the first stretched portion and the second stretched portion, to the first end portion is larger than the distance from the center line to the second end portion. The socket has a bottom plate, a socket housing having a second side wall portion extending in the y direction on the bottom plate, and a plurality of second terminals provided on the second side wall portion. Each of the plurality of second terminals has a third stretched portion extending in the opposite direction in the x direction, a fourth stretched portion extending in the x direction and facing the third stretched portion, and a second stretched portion via the third stretched portion. Includes a third end that connects to the part. The fourth stretched portion contacts the first stretched portion of the header and is electrically connected.

According to the present invention, deterioration of high frequency characteristics in RF signals can be suppressed.

FIG. 1 is a perspective view showing a connector according to an embodiment of the present invention. FIG. 2 is a perspective view including a cross section taken along line II-II of FIG. FIG. 3 is a front view showing a connector according to an embodiment of the present invention. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 5 is a cross-sectional view taken along the line VV of FIG. FIG. 6 is a left side view showing a connector according to an embodiment of the present invention. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 8 is a perspective view showing a socket according to an embodiment of the present invention. FIG. 9 is a perspective view including a cross section taken along line IX-IX of FIG. FIG. 10 is a plan view showing a socket according to an embodiment of the present invention. FIG. 11 is a front view showing a socket according to an embodiment of the present invention. FIG. 12 is a bottom view showing a socket according to an embodiment of the present invention. FIG. 13 is an exploded perspective view showing an external shield member and a socket shield member constituting the socket according to the embodiment of the present invention. FIG. 14 is a perspective view showing a header according to an embodiment of the present invention. FIG. 15 is a plan view showing a header according to an embodiment of the present invention. FIG. 16 is a front view showing a header according to an embodiment of the present invention. FIG. 17 is a bottom view showing a header according to an embodiment of the present invention. FIG. 18 is a perspective view showing a header shield member constituting the header according to the embodiment of the present invention. FIG. 19 is a partially enlarged cross-sectional view showing the connection of each terminal of the socket side wall portion of the socket constituting the connector according to the embodiment of the present invention and the header side wall portion of the header.

The header 30 that fits with the socket 20 according to the embodiment is provided in the header housing 31 having the base portion 31f, the header side wall portion 31c extending in the x direction from the base portion 31f, and the header side wall portion 31c, and is provided in the x direction. The posts 32a to 32e, which are a plurality of terminals arranged in the y direction orthogonal to each other, are provided. For example, the second post 32b extends in the direction opposite to the first post extension portion 32b1 extending in the x direction and faces the first post extension portion 32b1 with the header side wall portion 31c interposed therebetween. A second post-stretched portion 32b2, a first post-extended portion 32b3 connected to a second post-stretched portion 32b2 via a first post-stretched portion 32b1, and a second post-stretched portion 32b1 connected to a first post-stretched portion 32b2 via a second post-stretched portion 32b2. Includes post end 32b4. The first post stretched portion 32b1 and the first post end portion 32b3 are located in the z direction orthogonal to the x direction and the y direction with respect to the second post stretched portion 32b2. The distance from the center line C in the x direction that bisects the distance between the first post extension portion 32b1 and the second post extension portion 32b2 to the first post end portion 32b3 is the distance from the center line C to the second post end portion. Greater than the distance to 32b4.

According to this, even if the first contact 22a, which is one terminal of the socket 20, is connected to the second post extension portion 32b2 inside the second post 32b, which is one terminal of the header 30, the second contact 22a is connected. The path length of the signal via the post extension portion 32b2 is smaller than the distance from the center line C to the first post end portion 32b3. Therefore, in the outer first post extension portion 32b1, the influence of the phase difference or the like is less likely to affect the signal when it is electrically connected to the first contact 22a which is one terminal of the socket 20. Therefore, deterioration of high frequency characteristics (isolation (isolation separation)) in the RF signal can be suppressed.

In the header 30 according to one embodiment, the second post end portion 32b4 may face the first post extension portion 32b1 with the header side wall portion 31c interposed therebetween. According to this, it becomes easy to arrange the posts 32a to 32e on the header side wall portion 31c.

In this case, each of the plurality of posts 32a to 32e may further have a post connecting portion 32b5 connecting the first post extending portion 32b1 and the second post extending portion 32b2. On the other hand, each of the plurality of posts 32a to 32e does not have to have a portion facing the post connecting portion 32b5 with the header side wall portion 31c interposed therebetween. According to this, for example, it is possible to suppress the creeping up of the solder material from the second post 32b to the first post extending portion 32b1.

In the connector 10 including the socket 20 according to the embodiment and the header 30 that fits the socket 20, the header 30 has a base 31f and a header side wall portion extending from the base 31f in the x direction and toward the socket 20. It has a header housing 31 having 31c, and posts 32a to 32e provided on the side wall portion 31c of the header and arranged in the y direction orthogonal to the x direction, which are a plurality of first terminals. For example, the second post 32b extends in the direction opposite to the first post extension portion 32b1 extending in the x direction and faces the first post extension portion 32b1 with the header side wall portion 31c interposed therebetween. A second post-stretched portion 32b2, a first post-extended portion 32b3 connected to a second post-stretched portion 32b2 via a first post-stretched portion 32b1, and a second post-stretched portion 32b1 connected to a first post-stretched portion 32b2 via a second post-stretched portion 32b2. Includes post end 32b4. The first post stretched portion 32b1 and the first post end portion 32b3 are located in the z direction orthogonal to the x direction and the y direction with respect to the second post stretched portion 32b2. The distance from the center line C in the x direction that bisects the distance between the first post extension portion 32b1 and the second post extension portion 32b2 to the first post end portion 32b3 is the distance from the center line C to the second post end portion. Greater than the distance to 32b4. The socket 20 has a socket housing 21 having a bottom plate 21a and a socket side wall portion 21c extending in the y direction on the bottom plate 21a, and contacts 22a to 22d provided on the socket side wall portion 21c and having a plurality of second terminals. doing. For example, the first contact 22a has a first contact extending portion 22a1 extending in the opposite direction in the x direction, a second contact extending portion 22a2 extending in the x direction and facing the first contact extending portion 22a1, and a first contact extending portion. Includes a second contact end 22a6 that connects to the second post extension 32b2 via 22a1. Further, the second contact extending portion 22a2 of the first contact 22a is in contact with the first post extending portion 32b1 of the second post 32b in the header 30 and is electrically connected.

According to this, even if the first contact 22a, which is one terminal of the socket 20, is connected to the second post extension portion 32b2 inside the second post 32b, which is one terminal of the header 30, the second contact 22a is connected. The path length of the signal via the post extension portion 32b2 is smaller than the distance from the center line C to the first post end portion 32b3. Therefore, in the outer first post extension portion 32b1, the influence of the phase difference or the like is less likely to affect the signal when it is electrically connected to the first contact 22a which is one terminal of the socket 20. Therefore, deterioration of high frequency characteristics (isolation) in the RF signal can be suppressed.

(One Embodiment)
An embodiment of the present invention will be described with reference to the drawings.

(Overview of connector)
1 to 7 show a connector according to the present embodiment.

As shown in FIGS. 1 to 7, the connector 10 according to the present embodiment fits into the socket 20 inside the socket 20 with the header 30 facing the socket 20. As a result, the terminals corresponding to the socket 20 and the header 30 come into contact with each other and are electrically connected.

Although not shown, the socket 20 and the header 30 are used by being mounted on a substrate on which an electric element is mounted and a wiring pattern is provided, such as a wiring board or a circuit board.

(Socket configuration)
8 to 13 show a socket constituting the connector according to the present embodiment and a shield member thereof.

As shown in FIG. 8, the socket 20 according to the present embodiment includes, for example, a socket housing 21 having a bottom plate 21a having a substantially flat rectangular shape and side walls 21b, 21c, 21d and 21e provided around the bottom plate 21a. Hereinafter, the side walls 21b and 21c facing each other on the long sides will be referred to as socket side wall portions 21b and 21c, respectively. Further, the side walls 21d and 21e facing each other on the short sides and connecting the socket side wall portions 21b and 21c to each other are referred to as socket side wall connecting portions 21d and 21e, respectively.

The socket housing 21 may be a molded product using a resin material having an insulating property, for example, a liquid crystal polymer (LCP).

Further, as shown in FIGS. 4, 8 and 10, socket terminal portions (first terminal portion and second terminal portion) 22 are located at positions facing each other on the socket side wall portions 21b and 21c of the socket housing 21, respectively. It is provided. Each socket terminal portion 22 has a contact portion with a first contact (first terminal) 22a located in a first direction along a socket side wall portion 21b from a contact portion 24b provided at a substantially central portion of an external shield member 24 described later. Includes a second contact (second terminal) 22b located in a second direction opposite to the first direction from 24b.

In the socket 20 according to the present embodiment, as an example, the third contact 22c is arranged at a portion of the first contact 22a in the first direction. Further, the fourth contact 22d is arranged in the second direction of the second contact 22b.

Here, the contacts 22a, 22b, 22c, and 22d all have the same configuration, but the configuration is not limited to the same.

The upper surfaces of the contacts 22a, 22b, 22c, and 22d (opposing surfaces to the header 30) are formed so that the thickness of the gold (Au) plating layer is 0.06 μm or less.

As a result, when soldering the lower surfaces of the contacts 22a to 22d, it becomes difficult for the solder material to crawl up to the upper surface of each contact. Therefore, the excess solder material does not adhere to the upper surface of the contact, so that the high frequency characteristics are stable.

Further, as shown in FIGS. 8 to 10, in the socket housing 21, the socket side wall portion 21b faces the socket side wall portion 21c in the region between the socket side wall portion 21b and the socket side wall portion 21c on the bottom plate 21a. A first holding wall 21f for holding the first contact 22a to the fourth contact 22d of the socket terminal portion 22 extending from the socket terminal portion 22 is provided.

Similarly, on the bottom plate 21a, a second holding wall 21g for holding the first contact 22a to the fourth contact 22d of the socket terminal portion 22 extending from the socket side wall portion 21c toward the socket side wall portion 21b is provided. There is. The holding walls 21f and 21g are integrally molded with, for example, the socket housing 21. The two holding walls 21f and 21g are provided so that their back surfaces are in contact with each other.

Further, in the present embodiment, as shown in FIG. 9, the lower portions of the contacts 22a to 22d, for example, the second contact 22b, are arranged inside the holes 21h provided in the bottom plate 21a of the header housing 21. There is. Moreover, the thickness of the second contact 22b (thickness in the vertical direction in the drawing) is smaller than the thickness of the bottom plate 21a. Therefore, as shown in FIG. 4, the lower portion (top) of the second post 32b of the header 30 fitted with the socket 20 comes into contact with the upper surface of the bottom plate 21a of the socket 20 and stops. That is, the top of the second post 32b does not interfere with the upper surface of the second contact 22b. Therefore, the height of the connector 10 when the socket 20 and the header 30 are fitted (vertical direction in the drawing) is not affected by the lower part of the second contact 22b.

The hole 21h provided in the bottom plate 21a of the header housing 21 and into which at least the lower portion of the second contact 22b or the like is fitted does not necessarily have to be a hole penetrating the bottom plate 21a. That is, it may be configured as a groove portion formed from the upper surface side of the bottom plate 21a. However, even if the hole 21h is configured as a groove, the upper surface of the second contact 22b arranged inside the groove needs to be arranged lower than the upper surface of the bottom plate 21a. Details of the second post 32b and the like of the header 30 will be described later.

As shown in FIGS. 8 to 12, on the socket side wall connecting portions 21d and 21e of the socket housing 21, the holding metal fittings 26 cover the respective ends of the back surfaces of the socket side wall portions 21b and 21c and the bottom plate 21a. For example, it is configured by insert molding. With the holding metal fitting 26, it is possible to increase the strength of the socket side wall connecting portions 21d and 21e of the socket 20 which are not provided with the external shield member 24 (described later) and the portions in the vicinity thereof, particularly the corner portions.

A known metal plate can be used as the constituent material of the holding metal fitting 26, and for example, an alloy containing a metal material such as a copper alloy can be used.

Further, in the present embodiment, as shown in FIG. 8, the socket terminal portions 22 of the socket 20 are provided on the two socket side wall portions 21b and 21c facing each other, but the configuration is not limited to this. For example, the socket terminal portion 22 may be provided on the side wall portion of the socket of only one of them. In this case, the header terminal portion 32 of the header 30 may also be provided with one header terminal portion 32 corresponding to the socket terminal portion 22.

(Socket: Configuration of external shield member)
As shown in FIGS. 8 to 13, the socket housing 21 is provided on each outer surface of the socket side wall portions 21b and 21c, and has a plate-shaped outer shield member 24 having conductivity, respectively.

Each external shield member 24 has a main body portion 24a arranged on each outer surface of the socket side wall portions 21b and 21c, respectively.

Each main body 24a is provided with contact portions 24b extending from the upper end of the central portion of the main body 24a to the inner side surfaces of the socket side wall portions 21b and 21c, respectively. Each contact portion 24b is electrically connected to the outside of the socket housing 21, that is, the header 30.

Further, the lower end portion of the main body portion 24a corresponding to the contact portion 24b extends downward (toward the bottom plate 21a side) from the lower end portion and is electrically connected to the contact portion 24b via the main body portion 24a. A terminal portion 24c is provided. Therefore, in each external shield member 24, the contact portion 24b and the external shield terminal portion 24c are arranged on one axis. As a result, the signal path is minimized, so that the high frequency characteristics of the socket 20 (connector 10) are improved.

Further, each external shield member 24 has an extension portion 24d provided so as to extend from each end portion of the main body portion 24a to the inner side surface of each of the socket side wall portions 21b and 21c. Each extension 24d comes into contact with the header holding bracket 36 and is electrically connected when the socket 20 is fitted to the header 30 (see FIGS. 1, 2 and 8).

As described above, each external shield member 24 is formed separately from the side wall portions 21d and 21e on the short side of the socket housing 21 and the holding metal fittings 26 provided in the vicinity thereof. Therefore, when the socket 20 and the header 30 are fitted together, a desired spring property can be imparted to each external shield member 24. Further, the plate thickness, structure and manufacturing method of each external shield member 24 can be appropriately selected.

An example of a signal applied to each of the contacts 22a to 22d of the socket terminal portion 22 including the contact portion 24b of the external shield member 24 will be described below.

For example, in the socket terminal portion 22 provided on the socket side wall portion 21b, a high frequency (RF: Radio Frequency) signal may be applied to the third contact 22c and the fourth contact 22d located at both ends of the socket terminal portion 22. .. Further, a ground potential may be applied to the contact portion 24b, the first contact 22a and the first contact 22b on both sides thereof.

On the other hand, in the socket terminal portion 22 of the socket side wall portion 21c facing the socket side wall portion 21b, a ground potential (ground) may be applied to the contact portion 24b. Further, even if a normal signal including an RF signal is applied to the first contact 22a and the first contact 22b on both sides of the contact portion 24b and the third contact 22c and the fourth contact 22d at both ends of the socket terminal portion 22. Good.

Here, on the side wall portion 21c of the socket, the contact portion 24b of the external shield member 24 is arranged at the center of the five terminals. However, when the contact portion 24b is used as a grounding terminal adjacent to a normal signal, the contact portion 24b does not necessarily have to be arranged at the center of the five terminals.

Further, as shown in the bottom view of FIG. 12, the external shield member 24 according to the present embodiment is arranged outside the socket terminal portion 22 in the width direction. That is, the socket terminal portion 22 according to the present embodiment is arranged inside the external shield member 24 in the width direction. With this configuration, noise can be suppressed even if an RF signal is applied to the socket terminal portion 22.

Further, as shown in FIG. 9, the in-plane direction of each contact 22a to 22d, for example, the outer end surface 22b1 of the second contact 22b and the in-plane direction of the lower end surface 24c1 of the outer shield member 24c are substantially orthogonal to each other. ing. As a result, since the outer end surface 22b1 of the second contact 22b is covered with the external shield member 24, the connector size in the Z direction (extending direction of the second contact 22b) can be reduced while suppressing unnecessary radiation.

(Socket: Configuration of internal shield member)
As shown in FIGS. 8 to 10, 12 and 13, the socket housing 21 has a region between the socket side wall portions 21b and 21c in the bottom plate 21a, along the socket side wall portions 21b and 21c, and is conductive. A plate-shaped internal shield member 25 having a housing is provided. Hereinafter, the internal shield member 25 will be referred to as a socket shield member 25.

The socket shield member 25 has two first socket shield terminals 25a extending above the bottom plate 21a from both ends thereof. The two first socket shield terminals 25a are exposed from the upper surface between the first holding wall 21f and the second holding wall 21g described above. Each first socket shield terminal 25a has an engaging portion 25a1 projecting outward in the longitudinal direction.

Each of the first socket shield terminals 25a comes into contact with the first header shield terminal 35a of the header shield member 35 described later in the header 30, and is electrically connected to each other.

Further, the socket shield member 25 has a second socket shield terminal 25b exposed from the back surface of the bottom plate 21a. The second socket shield terminal 25b is electrically connected to the outside of the socket housing 21. More specifically, it is electrically and mechanically connected to one wiring board (not shown) on which the socket 20 is mounted, for example, by soldering. As shown in FIG. 13, two terminals having substantially the same shape are provided on both sides of the terminal with reference numeral 25b. Therefore, when making an electromechanical connection to the lower surface of the socket shield member 25, at least one of these three terminals may be selected.

Further, a portion of the socket shield member 25 below the lower end of each first socket shield terminal 25a is provided with a protrusion 25a2 having the same height as the lower surface of the second socket shield terminal 25b. The protrusion 25a2 is also electrically connected to the wiring board, for example, by soldering. As described above, since the socket shield member 25 is soldered to the wiring board or the like at a plurality of places, at least three places here, the high frequency characteristics are improved.

Further, the socket shield member 25 is provided with a holding portion 25c extending upward at the center thereof. The holding portion 25c is sandwiched and held between the two holding walls 21f described above. The holding portion 25c has a protruding portion 25c1 whose top protrudes in both longitudinal directions. By engaging the two protrusions 25c1 of the holding portion 25c with the two holding walls 21f, respectively, it becomes difficult for the holding portion 25c to fall off from the socket 20.

A known metal plate can be used as the material constituting the external shield member 24 and the socket shield member 25, and for example, a metal material such as a copper alloy can be used. In the present embodiment, at least the socket shield member 25 of the external shield member 24 and the socket shield member 25 may be different from the metal composition of the holding metal fitting 26 described above. In this way, for example, the thickness, structure, and thickness of the socket shield member 25 can be obtained according to the desired strength and the desired spring property so that the socket shield member 25 can obtain a shape that exhibits elasticity when in contact with the header shield member 35. It is possible to use the composition properly.

As described above, the socket shield member 25 of the socket 20 according to the present embodiment is held by the first holding wall 21f and the second holding wall 21g that hold the inner portions of the contacts 22a to 22d, respectively. Therefore, the socket shield member 25 functions as an electromagnetic shield between the socket terminal portions 22 provided on the socket side wall portions 21b and 21c facing each other.

(Header structure)
14 to 17 show headers constituting the connector according to the present embodiment.

As shown in FIG. 14, the header 30 according to the present embodiment includes, for example, a substantially flat rectangular upper plate 31a and a header housing 31 having side walls provided around the header housing 31. Hereinafter, the side walls facing each other on the long sides will be referred to as header side wall portions 31b and 31c, respectively. Further, the side walls that face each other on the short sides and connect the header side wall portions 31b and 31c to each other are referred to as header side wall connection portions 31d and 31e, respectively.

In the header housing 31, as in the header housing 21, a molded product using a liquid crystal polymer (LCP), which is a resin material having an insulating property, can be used.

Further, as shown in FIGS. 14 to 17, header terminal portions (third terminal portion and fourth terminal portion) 32 are provided at positions facing each other on the header side wall portions 31b and 31c of the header housing 31, respectively. There is. Each header terminal portion 32 is in contact with the first post (third terminal) 32a, which is electrically connected to the contact portion 24b of the external shield member 24 in the socket 20 described above, and the first contact 22a of the socket 20. It includes a second post (fourth terminal) 32b that is electrically connected and a third post (fifth terminal) 32c that is electrically connected in contact with the second contact 22b of the socket 20. Further, each header terminal portion 32 has a fourth post 32d that is in contact with the third contact 22c of the socket 20 and electrically connected, and a fifth post that is electrically connected in contact with the fourth contact 22d of the socket 20. Including 32e.

Here, each of the posts 32a to 32e has the same configuration (shape), but the configuration is not limited to the same.

The upper surfaces of the posts 32a to 32e (opposing surfaces to the socket 20) are formed so that the thickness of the gold (Au) plating layer is 0.06 μm or less.

As a result, when soldering the lower surfaces of the posts 32a to 32e, it becomes difficult for the solder material to crawl up to the upper surface of each post. Therefore, the excess solder material does not adhere to the upper surface of the post, and the high frequency characteristics are stable.

Further, the header side wall connecting portions 31d and 31e of the header housing 31 are provided with holding metal fittings 36 so as to cover the respective ends of the header side wall portions 31b and 31c. With the holding metal fitting 36, the strength of the header side wall connecting portions 31d and 31e and the portions (corner portions) in the vicinity thereof can be increased.

A known metal plate can be used as the constituent material of the holding metal fitting 36, and for example, an alloy containing a metal material such as a copper alloy can be used.

(Header: Structure of header shield member)
As shown in FIGS. 14, 15 and 17, the header housing 31 is provided with a conductive plate-shaped header shield member 35 in the region between the header side wall portions 31b and 31c of the upper plate 31a. There is. The header shield member 35 is provided in parallel with the header side wall portions 31b and 31c.

FIG. 18 shows a header shield member. As shown in FIG. 18, the header shield member 35 has two first header shield terminals 35a protruding upward from the upper surfaces of both ends thereof.

Further, the header shield member 35 has a third header shield terminal 35b exposed from the lower surface of the upper plate 31a of the header housing 31. The third header shield terminal 35b is electrically connected to the outside of the header housing 31. More specifically, it is electrically and mechanically connected to another wiring board (not shown) on which the header 30 is mounted, for example, by soldering. As shown in FIG. 18, two terminals having substantially the same shape are provided on both sides of the terminal with reference numeral 35b. Therefore, when making an electromechanical connection to the lower surface of the header shield member 35, at least one of these three terminals may be selected.

A lower portion of the header shield member 35 below the lower end of each header shield terminal 35a is provided with a lower surface protrusion 35a2 having the same height as the lower surface of the third header shield terminal 35b. The lower surface protrusion 35a2 is also electrically and mechanically connected to the wiring board, for example, by soldering.

Side projections 35a3 are provided on the outer side surfaces of each header shield terminal 35a. As shown in the cross-sectional view of FIG. 7, since each side protrusion 35a3 engages with the inner facing portions of the header side wall connecting portions 31d and 31e at the time of manufacturing, the holding force of the header housing 31 against the header shield member 35 is increased. improves.

As shown in FIG. 7, each first header shield terminal 35a of the header shield member 35 is socketed via the first socket shield terminal 25a of the socket shield member 25 and the header side wall connection portions 31d and 31e, respectively. The housing 21 is arranged in the area between the socket connection wall portions 21d and 21e, respectively.

As the constituent material of the header shield member 35, the same alloy or the like as the constituent material of the external shield member 24 and the socket shield member 25 can be used.

As described above, the header 30 according to the present embodiment includes the header shield member 35 held along the inside of the header side wall portions 31b and 31c in the extending direction. Therefore, it functions together with the socket shield member 25 described above as an electromagnetic shield between the header terminal portions 32 provided on the header side wall portions 31b and 31c facing each other.

(Connection between socket shield member and header shield member)
The details of the connection between the socket shield member 25 of the socket 20 and the header shield member 35 of the header 30 will be described with reference to FIG. 7.

As shown in FIG. 7, the socket shield member 25 is held by the first holding wall 21f and the second holding wall 21g by both protrusions 25c1 of the holding portion 25c provided at the substantially central portion thereof.

Further, in the socket shield member 25, the first socket shield terminal 25a engages with the facing surface 35a1 (see FIG. 18) of the first header shield terminal 35a in the header shield member 35, respectively. Here, as shown in FIG. 7, the cross-sectional shape of the two socket shield terminals 25a and the lower portion connecting them in the long side direction is the old unit notation of conductance (mho: reciprocal of Ω: Inverted OHM Sign). It is configured as follows.

Further, when the socket shield member 25 is fitted with the header shield member 35, it is compressed from the outside to the inside in the long side direction thereof. In this case, if the constituent material of the socket shield member 25 is a material having appropriate elasticity, even after the socket 20 is fitted with the header 30, the socket shield member 25 is subjected to the urging force of the header shield member 35. It is appropriately pressed against the facing surface 35a1 of the first header shield terminal 35a. Therefore, the engaging portion 25a1 on the outer side of each first socket shield terminal 25a in the socket shield member 25 surely contacts (point contact) the facing surface 35a1 of each first header shield terminal 35a.

From the above configuration, the socket shield member 25 and the header shield member 35, which are held on separate wiring boards and electrically connected by solder or the like, are both the first socket shield terminal 25a located at both ends. By contact with the first header shield terminal 35a (point contact), they are connected at the shortest possible distance. Since the header 30 and the socket 20 are grounded at a short distance in this way, the high frequency characteristics of the RF signal are improved.

(Structure of socket terminal and header terminal)
The configuration of the electrical connection between the socket terminal portion 22 of the socket 20 and the header terminal portion 32 of the header 30 will be described with reference to FIG. FIG. 19 shows an enlarged cross-sectional configuration of a portion including the socket side wall portion 21c and the header side wall portion 31c in FIG.

First, the configuration of the header terminal portion 32 will be described.

In FIG. 19, it is assumed that the header side wall portion 31c of the header housing 31 extends in the x direction (for example, downward) from the base portion 31f. Further, it is assumed that the header terminal portions 32 are arranged in the y direction orthogonal to the x direction. In the present embodiment, since the plurality of terminals (posts) all have the same cross-sectional shape, the second post 32b among them is given as an example here.

The second post 32b extends in the direction opposite to the x direction (upward) from the first post extension portion 32b1 extending along the x direction, and faces the first post extension portion 32b1 with the header side wall portion 31c interposed therebetween. It has a 2-post stretched portion 32b2.

The end portion 32b3 of the first post is located in the z direction (the direction outside the header 20) orthogonal to the x direction and the y direction of the second post 32b. The first post end portion 32b3 is connected to the second post extension portion 32b4 via the first post extension portion 32b1. On the other hand, the end portion 32b4 of the second post is located in the direction opposite to the z direction of the second post 32b (the direction inside the header 20). The second post end portion 32b4 is connected to the first post extension portion 32b3 via the second post extension portion 32b2. Therefore, the first post stretched portion 32b1 and the first post end portion 32b3 are located in the z direction with respect to the second post stretched portion 32b2. Further, the first post end portion 32b3 is exposed in the z direction from the base portion 31f.

Further, as shown in FIG. 19, the distance D1 from the center line C in the x direction that bisects the distance between the first post extension portion 32b1 and the second post extension portion 32b2 to the first post end portion 32b3 is , Greater than the distance D2 from the center line C to the end of the second post 32b4. The distance here refers to the distance (shortest distance) in the z direction with respect to the center line C in the x direction.

At this time, the second post end portion 32b4 faces the first post extension portion 32b1 with the header side wall portion 31c interposed therebetween with respect to the center line C. Further, the second post 32b has a post connecting portion 32b5 that connects the first post extending portion 32b1 and the second post extending portion 32b2. On the other hand, the second post 32b does not have a portion facing the post connecting portion 32b5 with the header side wall portion 31c interposed therebetween with respect to the center line C.

Next, the configuration of the socket terminal portion 22 will be described.

In FIG. 19, the socket terminal portions 22 are arranged in the y direction on the socket side wall portion 21c of the socket housing 21 because of the configuration corresponding to the header terminal portion 32. In the present embodiment, the plurality of terminals (contacts) all have the same cross-sectional shape, and the first contact 22a among them is given as an example.

The first contact 22a is opposite to the first contact extending portion 22a1 extending in the x direction (upward) and the second contact extending portion 22a2 extending in the x direction and facing the first contact extending portion 22a1 in the x direction. It includes a third contact extending portion 22a3 extending to the side.

Further, the first contact 22a includes a contact connecting portion 22a4 that connects the second contact extending portion 22a2 and the third contact extending portion 22a3. The contact connection portion 22a4 is located in the x direction (downward) of the second post 32b of the header 30.

Further, the first contact 22a includes a first contact end portion 22a5 connected to the first post extension portion 32b1 via the first contact extension portion 22a1 and the second contact extension portion 22a2). That is, the first contact end portion 22a5 is exposed from the lower part of the socket housing 21 in the z direction.

The first contact 22a also has a second contact end 22a6 on the opposite side of the first contact end 22a5 in the third contact extension 22a3. The second contact end portion 22a6 is bent in the x direction so as to face the second contact extension portion 22a2 and is in contact with the second post extension portion 32b2.

With the above configuration, the first contact 22a is electrically connected by contacting the second contact extending portion 22a2 with, for example, the first post extending portion 32b1 in the second post 32b of the header 30. At the same time, the first contact 22a is electrically connected with its second contact end portion 22a6 in contact with the second post extension portion 32b2.

Therefore, in the present embodiment, the first contact 22a of the socket terminal portion 22 is connected to the first post extension portion 32b1 of the second post 32b of the header terminal portion 32. Therefore, the RF signal input / output to the first contact end 22a5 of the first contact 22a is mainly from the first post end 32b3 of the second post 32b to the first post located outside (z direction). Input / output is performed via the stretched portion 32b1. That is, the RF signal input / output from the first contact end 22a5 is input / output from the first post end 32b3 with a relatively short path length.

Further, in the second post 32b of the header terminal portion 32, the inside of the header 30 (opposite side in the z direction) with respect to the center line C between the first post extension portion 32b1 and the second post extension portion 32b2. The distance D2 of the second post end 32b4 is smaller than the distance D1 of the first post end 32b3 outside the header 30. Therefore, even if the first contact 22a of the terminal of the socket terminal portion 22 is connected to the second post extension portion 32b2 of the second post 32b, the path length of the signal via the second post extension portion 32b2 is relative. Short. Therefore, the signal when the first post-stretched portion 32b1 is electrically connected to the first contact 22a is less likely to be affected by the phase difference or the like. As a result, isolation (isolation separation) in the RF signal is improved, and deterioration of high frequency characteristics can be suppressed.

Further, in the present embodiment, as shown in FIGS. 14 and 15, if the wiring pitch of each post 32a to 32d in the header 30 is A and the width dimension of each post 32a to 32d is B, the pitch dimension A. The width dimension B of the post is formed to be smaller than that of the post. As a result, the impedance of the connector 10 can be optimized. For example, if the ratio value ((B / A) × 100) of the width dimension B of the post and the pitch dimension A is set to 60% or less, the impedance value of the connector 10 can be matched with 50Ω (nominal value). it can. The width dimension of each post 32a to 32d here is not the outer end portion connected to the wiring board or the like, but the width dimension of the portion straddling the header side wall portions 31b and 31c, respectively.

Next, an example of a mounting location in the holding metal fitting 26 of the socket 20 according to the present embodiment will be described. As shown in FIG. 8, as the mounting portion 26a, the portions of the holding metal fitting 26 located at each corner of the socket housing 21 may be soldered. In this way, even if an external stress is applied to the socket 20 or the connector 10 after soldering, the socket 20 or the connector 10 is less likely to be peeled off.

As shown in FIG. 14, in the holding metal fitting 36 of the header 30, the portions of the holding metal fitting 36 located at each corner of the header housing 31 may be used as the soldering mounting portion 36a. This makes it difficult for the header 30 or the connector 10 to be peeled off due to external stress after soldering.

10 Connector 20 Socket 21 Socket housing 21a Bottom plate 21b Socket side wall 21c Socket side wall (second side wall)
21d Socket side wall connection 21e Socket side wall connection 21f First holding wall 21g Second holding wall 22 Socket terminal 22a First contact (second terminal)
22a1 1st contact stretched part (3rd stretched part)
22a2 2nd contact stretched part (4th stretched part)
22a5 1st contact end 22a6 2nd contact end (3rd end)
24 External shield member (1st and 2nd external shield member)
24a Main body (1st and 2nd main body)
24b contact part (1st / 2nd contact part)
24c external shield terminal (1st / 2nd external shield terminal)
24d Extension 25 Socket shield member 25a 1st socket shield terminal 25b 2nd socket shield terminal 26 Holding bracket 30 Header 31 Header housing 31a Upper plate 31b Header side wall 31c Header side wall (first side wall)
31f Base 32 Header terminal 32a 1st post 32b 2nd post (1st terminal)
32b1 1st post stretched part (1st stretched part)
32b2 2nd post stretched part (2nd stretched part)
32b3 1st post end (1st end)
32b4 2nd post end (2nd end)
32b5 Post connection (connection)
35 Header Shield Member 35a 1st Header Shield Terminal 35b 3rd Header Shield Terminal 36 Holding Bracket

Claims (4)

A header that fits into a socket
The header is
At the base,
A header housing having a first side wall extending in the x direction from the base,
A plurality of terminals provided on the first side wall portion and arranged in the y direction orthogonal to the x direction, and
With
Each of the plurality of terminals
The first stretched portion extending along the x direction and
A second stretched portion extending in the opposite direction in the x direction and facing the first stretched portion with the first side wall portion interposed therebetween.
A first end portion connected to the second stretched portion via the first stretched portion,
A second end portion connected to the first stretched portion via the second stretched portion,
Including
The first stretched portion and the first end portion are located in the z direction orthogonal to the x direction and the y direction with respect to the second stretched portion.
The distance from the center line in the x direction that bisects the distance between the first stretched portion and the second stretched portion to the first end portion is from the distance from the center line to the second end portion. Also big, header. In the header according to claim 1,
The second end portion is a header that faces the first extension portion with the first side wall portion interposed therebetween. In the header according to claim 2,
Each of the plurality of terminals further has a connecting portion connecting the first stretched portion and the second stretched portion.
A header in which each of the plurality of terminals does not have a portion facing the connecting portion with the first side wall portion interposed therebetween. Socket and
A connector having a header that fits with the socket.
The header is
A header housing having a base portion and a first side wall portion extending from the base portion in the x direction and toward the socket.
A plurality of first terminals provided on the first side wall portion and arranged in the y direction orthogonal to the x direction, and
Have,
Each of the plurality of first terminals
The first stretched portion extending along the x direction and
A second stretched portion extending in the opposite direction in the x direction and facing the first stretched portion with the first side wall portion interposed therebetween.
A first end portion connected to the second stretched portion via the first stretched portion,
A second end portion connected to the first stretched portion via the second stretched portion,
Including
The first stretched portion and the first end portion are located in the z direction orthogonal to the x direction and the y direction with respect to the second stretched portion.
The distance from the center line in the x direction that bisects the distance between the first stretched portion and the second stretched portion to the first end portion is from the distance from the center line to the second end portion. Is also big
The socket
With the bottom plate
A socket housing having a second side wall extending in the y direction on the bottom plate,
A plurality of second terminals provided on the second side wall portion,
Have,
Each of the plurality of second terminals
A third extension extending in the opposite direction in the x direction,
A fourth stretched portion extending in the x direction and facing the third stretched portion,
A third end portion connected to the second stretched portion via the third stretched portion, and
Including
The fourth stretched portion is a connector that contacts and electrically connects with the first stretched portion of the header.

Images