JP6970928B2 - Electrical connector - Google Patents

Description

The present invention relates to an electrical connector.

Generally, in various electric devices, an electric connector device for connecting a board called a stacking connector or the like is widely adopted. In the board connection electric connector device, for example, the second connector (plug connector) to which the second wiring board is connected is arranged so as to face above the first connector (receptacle connector) to which the first wiring board is connected. Then, from such a vertically opposed state, the upper second connector is pushed in so as to be lowered toward the lower first connector, whereby both electric connectors are brought into a mated state. By doing so, a structure in which the first and second wiring boards are electrically connected to each other is adopted.

In such an electric connector for connecting a substrate, it is required to take so-called EMI (ELECTRO MAGNETIC INTERFERENCE) measures, especially with the recent increase in the frequency of transmission signals. For example, in the following Patent Document 1, electromagnetic shielding is required. The shield shell for signal transmission is arranged outside the contact member for signal transmission in the width direction of the connector.

Japanese Patent No. 6117415

However, in this case, a spark is generated or a solder material is generated between the signal conductive path to which the contact member for signal transmission is connected and the ground conductive path to which the substrate connection portion of the shield shell is connected in the wiring board. It is necessary to provide an interval in the width direction of the connector to avoid a short circuit. Therefore, there is a problem that the entire electric connector device becomes large in the connector width direction. In particular, in the electric connector device according to Patent Document 1 below, since the board connection portion of the shield shell is folded inward in the connector width direction, the board connection portion of the shield shell is connected. The structure is such that the shield shell overhangs at the outer position in the connector width direction with respect to the ground conductive path. Therefore, it is difficult to miniaturize the entire electric connector device in the connector width direction.

On the other hand, in recent years, as the number of polarities of transmission signals increases, the length of the electric connector device tends to increase in the connector width direction. The shield shell provided in such a long electric connector device is liable to bend or deform due to the elongated structure, and obtains the planned shield function and impedance characteristics. It may not be possible.

Accordingly, an object of the present invention, in the structure in which the shield shell outward position of the connector width direction relative to the contact member, the board connecting electric connector which make it possible easily achieved miniaturization of the connector width direction To provide.

In order to achieve the above object, the invention according to claim 1 is used in a state of being connected to the main surface of a wiring board, to which another electric connector is fitted, and is conductive to a housing having an insulating property. A plurality of contact members for signal transmission made of sex members are attached in parallel in the longitudinal direction of the connector, and at the outer position in the width direction of the connector orthogonal to the longitudinal direction of the connector with respect to the contact members. The side wall plate of the shield shell having conductivity is arranged so as to extend in the longitudinal direction of the connector , and the contact member is provided with a signal connection portion connected to the signal transmission conductive path of the wiring board. On the other hand, in an electric connector provided with a ground connection portion connected to a ground conductive path of the wiring board on the side wall plate of the shield shell, the outer end surface of the side wall plate of the shield shell in the connector width direction. Is arranged inward in the connector width direction with respect to the outer end surface in the connector width direction in the ground connection portion, and the ground connection portion is the said in the side wall plate of the shield shell. It has a step portion that projects outward from the outer end surface in the connector width direction toward the outside in the connector width direction, and a connection piece portion that projects toward the wiring board through the step portion, and has the plurality of portions. Of the signal connection portions of the above, the outer end face in the connector width direction of the signal connection portion closest to the connection piece portion of the ground connection portion is the inner end surface in the connector width direction of the shield shell side wall plate. A configuration is adopted in which the connector is arranged inward in the width direction of the connector with respect to the end face.

According to the invention according to claim 1 having such a configuration, since the side wall plate of the shield shell is arranged inward in the connector width direction with respect to the ground connection portion, both connectors are fitted. when the, outside of the side wall plate of the shield shell, that side walls of the shield shell in the connector comprising a mating fitting is arranged, side walls of the shield shell in the connector comprising a mating fitting is conventional It will be located in the connector inward than, while securing the distance between the connector width direction of the signal connection portion of the shield shell ground connecting portion and the contact member, small across the connector width direction of the electrical connector device Be made.

Further, according to the invention according to claim 1 having such a configuration, the entire shield shell is maintained in a state of being separated from the wiring board by the amount that the connection piece portion of the ground connection portion protrudes toward the wiring board. This makes it difficult for the shield shell to interfere with the signal transmission conductive path of the signal transmission contact member arranged inside the shield shell. As a result, the shield shell can be brought closer to the signal transmission conductive path, and the ground conductive path to which the ground connection portion of the shield shell is connected becomes the signal transmission conductive path to which the signal transmission contact member is connected. On the other hand, by moving it closer to the width of the connector, further miniaturization can be achieved.
Further, the electromagnetic shielding for the entire contact member for signal transmission including the contact connection portion is appropriately impedance-matched through the space portion between the contact connection portion of the contact member for signal transmission and the side wall plate of the shield shell. It is done well in the state of being.

Further, as in the invention according to claim 2 , the contact member is in a state of facing the contact portion connected to the contact member of the other electric connector and the contact portion outward in the width direction of the connector. The signal connecting portion has an outer vertical upper side portion that rises from the wiring board, and the signal connection portion is bent outward from the outer vertical upper side portion and is in close proximity to or in contact with the outer vertical upper side portion. It can be provided at the end of the portion extending toward the wiring board.

Furthermore, as in the invention according to claim 3 , in the housing, a gap for separating the outer end surface of the housing in the connector width direction from the side wall plate of the shield shell inward in the connector width direction. It is desirable that a portion is provided and the signal connection portion is arranged in the gap portion.

According to the third aspect of the present invention having such a configuration, the connection state of the contact member can be observed through the gap portion, and the impedance characteristic is suitable by adjusting the size of the gap portion. It can be adjusted to the state.

Electrical connector according to the present invention as mentioned above, in the structure in which the shield shell outward position of the connector width direction relative to the contact member, the connector width direction of miniaturized easily Fig Ritsutsu, the signal transmission Electromagnetic shielding to the contact member can be performed satisfactorily in a state of impedance matching.

It is an external perspective explanatory view which showed the 1st connector (receptacle connector) which concerns on one Embodiment of this invention from the upper side. FIG. 3 is an external perspective explanatory view showing a state in which the first connector (receptacle connector) according to the embodiment of the present invention shown in FIG. 1 is turned upside down. It is a plane explanatory view showing the 1st connector (receptacle connector) which concerns on one Embodiment of this invention shown in FIG. 1 and FIG. 1 is a front explanatory view showing a first connector (receptacle connector) according to an embodiment of the present invention shown in FIGS. 1 to 3. It is a side explanatory view showing the 1st connector (receptacle connector) which concerns on one Embodiment of this invention shown in FIGS. 1 to 4. FIG. It is an enlarged cross-sectional explanatory view along the VI-VI line in FIG. It is an enlarged cross-sectional explanatory view along the line VII-VII in FIG. It is an enlarged cross-sectional explanatory view along the line VIII-VIII in FIG. 1 is an external perspective explanatory view showing an exploded view of a first connector (receptacle connector) according to an embodiment of the present invention shown in FIGS. 1 to 8. 1 is an external perspective explanatory view showing a second connector (plug connector) according to an embodiment of the present invention fitted to the first connector (receptacle connector) shown in FIGS. 1 to 9 from the upper side. FIG. 10 is an external perspective explanatory view showing a state in which the second connector (plug connector) according to the embodiment of the present invention shown in FIG. 10 is turned upside down. 10 is a plan explanatory view showing a second connector (plug connector) according to an embodiment of the present invention shown in FIGS. 10 and 11. 10 is a front explanatory view showing a second connector (plug connector) according to an embodiment of the present invention shown in FIGS. 10 to 12. 10 is a side explanatory view showing a second connector (plug connector) according to an embodiment of the present invention shown in FIGS. 10 to 13. It is an enlarged cross-sectional explanatory view along the XV-XV line in FIG. It is an enlarged cross-sectional explanatory view along the XVI-XVI line in FIG. 10 is an external perspective explanatory view showing an exploded second connector (plug connector) according to an embodiment of the present invention shown in FIGS. 10 to 16. FIG. 3 is an external perspective explanatory view showing a state in which the first and second connectors according to an embodiment of the present invention are fitted to each other with the second connector facing up. FIG. 8 is an external perspective explanatory view showing a state in which the fitted state of the first and second connectors shown in FIG. 18 is turned upside down. It is a plane explanatory view showing the mating state between the 1st and 2nd connectors shown in FIGS. 18 and 19. It is a front explanatory view showing the fitting state of the 1st and 2nd connectors shown in FIGS. 18 and 19. It is a side explanatory view showing the fitting state of the 1st and 2nd connectors shown in FIGS. 18 and 19. It is an enlarged cross-sectional explanatory view shown with the wiring board along the XXIII-XXIII line in FIG. 21. It is an enlarged cross-sectional explanatory view shown with the wiring board along the XXIV-XXIV line in FIG. 21. It is an external perspective explanatory view which showed the structural example of the wiring board on which the 1st connector (receptacle connector) is mounted. It is an external perspective explanatory view which showed the structural example of the wiring board on which the 2nd connector (plug connector) is mounted.

Hereinafter, embodiments to which the present invention is applied will be described in detail with reference to the drawings.

[Overall structure of electrical connector device]
The board connection electric connector device according to the embodiment of the present invention shown in FIGS. 1 to 24 electrically connects wiring boards arranged in various electronic devices such as a smartphone or a tablet computer. The receptacle connector 10 as the first connector according to the present invention shown in FIGS. 1 to 9 and the plug connector as the second connector shown in FIGS. 10 to 17 are used for connecting. It is composed of 20. Then, the receptacle connector (first connector) 10 is mounted on the main surface of the first wiring board P1 shown in FIG. 25 by solder bonding or the like, and the plug connector (second connector) 20 is mounted on the main surface, for example. implemented by solder joint or the like on the main surface of the second wiring board P2 shown in FIG. 26, the first and second consists of both electrical connectors 10 and 20 was made in the implementation state of mutual wiring board By performing the fitting operation after the main surfaces are arranged so as to face each other, the above-mentioned first and second wiring boards P1 and P2 are electrically connected via both electric connectors 10 and 20. ..

In the following description, the mating direction between the receptacle connector (first connector) 10 and the plug connector (second connector) 20 is defined as the "vertical direction", and the receptacle connector 10 arranged at a lower position in the vertical direction thereof. From the upper and lower facing state where the plug connector 20 is arranged at the upper position, from the state where both electric connectors 10 and 20 are aligned with each other, for example, by pushing the plug connector 20 downward, FIGS. 18 to 24 As shown in the above, both electric connectors 10 and 20 are put into a mated state.

Further, the plug connector (second connector) 20 is pulled upward by an appropriate force from the mated state as described above, so that the plug connector 20 is pulled out upward from the lower receptacle connector (first connector) 10. It is configured to be. In this way, the operation of fitting and removing the plug connector (second connector) 20 with respect to the receptacle connector (first connector) 10 is not limited to being performed manually by an operator, and is not limited to a predetermined jig. It can also be done automatically by using a connector or a machine.

When fitting / removing the two electric connectors 10 and 20, the plug connector (second connector) 20 arranged above is used with respect to the receptacle connector (first connector) 10 arranged below. It will be arranged facing each other in the upside down state, but in explaining the plug connector 20 used in the upside down state, the state before the upside down, that is, the second arranged downward. A state in which the plug connector 20 is mounted on the wiring board P2 from above will be described.

The receptacle connector (first connector) 10 and the plug connector (second connector) 20 constituting such an electric connector device for connecting a board have a first housing 11 and a second housing 21 extending in an elongated shape, respectively. Have. The first housing 11 and the second housing 21 are, for example, molded by using a resin material such as an insulating plastic, and are formed along the longitudinal direction of the first housing 11 and the second housing 21. , A large number of first contact members 13 and second contact members 23 made of conductive members for signal connection are arranged at a predetermined pitch. The longitudinal direction of the first housing 11 and the second housing 21, which is the arrangement direction of the first contact member 13 and the second contact member 23, is hereinafter referred to as "connector longitudinal direction", and the "connector longitudinal direction" and "connector longitudinal direction" thereof. The lateral direction orthogonal to the "vertical direction" is referred to as the "connector width direction".

Each of these first housing 11 and second housing 21 is provided at both ends in the longitudinal direction (connector longitudinal direction) of the first housing 11 and the second housing 21, as shown in FIGS. 9 and 17. It has base ends 11a, 11a and 21a, 21a. The receptacle connector (first connector) 10 is provided with a central convex portion 11b so as to integrally hang the central portions of the base end portions 11a and 11a in the connector width direction in the connector longitudinal direction. In addition, in the plug connector (second connector) 20, a central recess 21b is provided so as to integrally hang the central portions of the base end portions 21a and 21a in the connector width direction in the connector longitudinal direction. As described above, the base end portions 11a, 11a and 21a, 21a of the first housing 11 and the second housing 21 are arranged so as to face each other in the longitudinal direction of the connector via the central convex portion 11b and the central concave portion 21b. The first shield shell 12 and the second shield shell 22 are attached so that both ends of the base end portions 11a, 11a and the base end portions 21a, 21a in the connector width direction are hung in the connector longitudinal direction.

The first shield shell 12 and the second shield shell 22 are formed of a bent structure of a conductive member made of a thin plate-shaped metal member or the like, and shield the first contact member 13 and the second contact member 23, which will be described later. The outer portions of the first housing 11 and the second housing 21 are mounted so as to form a wall portion so as to be sandwiched from both sides in the longitudinal direction of the connector and the width direction of the connector and to surround the outer portions in a substantially rectangular shape in a plane. The first shield shell 12 attached to the receptacle connector (first connector) 10 at this time is fixed to the first housing 11 by press fitting from above, while being fixed to the plug connector (second connector) 20. The mounted second shield shell 22 is fixed to the second housing 21 by press fitting from above or insert molding.

Further, as shown in FIG. 1, in the central convex portion 11b of the first housing 11 described above, the contact mounting grooves 11c having a concave groove shape are arranged in parallel at regular intervals along the longitudinal direction of the connector. In addition to being recessed in the second housing 21, contact mounting grooves (not shown) are also recessed in the second housing 21 and the central recess 21b so as to be parallel to each other at regular intervals along the longitudinal direction of the connector. Then, the first contact member 13 and the second contact member 23 are attached to these contact attachment grooves 11c and the like by press fitting or insert molding, respectively. A plurality of these first contact members 13 and second contact members 23 are arranged at regular intervals along the longitudinal direction of the connector.

The overall configuration of the receptacle connector (first connector) 10 and the plug connector (second connector) 20 is as described above, but the detailed configuration and arrangement of each part will be described below.

First, the first contact member 13 attached by press fitting to the first housing 11 of the receptacle connector (first connector) 10 and the second housing 21 of the plug connector (second connector) 20 attached by insert molding. The two contact members 23 are arranged so as to form two rows of electrodes extending substantially in parallel along the longitudinal direction of the connector for each of the electric connectors 10 and 20. The first contact members 13, 13 and the second contact members 23, 23 constituting these two rows of electrodes are arranged so as to be symmetrically opposed to each other in the connector width direction. In the following description, the first contact members 13 and 13 and the second contact members 23 and 23 having a symmetrical arrangement relationship are described in the same manner without distinction.

[About the contact member of the receptacle connector]
More specifically, first, as shown in FIG. 8, the central convex portion 11b of the first housing 11 to which the first contact member 13 of the receptacle connector (first connector) 10 is attached is described above. A partition plate 11d projecting upward from the bottom plate is provided so as to extend in a strip shape along the longitudinal direction of the connector in the portion between the two rows of electrodes, that is, the central portion in the width direction of the connector. Has been done. The partition plate 11d constitutes the groove bottom portion of the contact mounting groove 11c described above in the connector width direction, and the partition plate 11d and the longitudinal lengths of the partition plate 11d erected on both sides in the connector width direction. In the space between the side wall portions 11e and 11e, the pair of first contact members 13 and 13 constituting the electrode rows on both sides face each other so as to form a symmetrical shape in the connector width direction. Have been placed.

Each of these first contact members 13 is formed of a metal strip-shaped member bent so as to extend outward in a curved shape from the connector center portion in the connector width direction. It is attached to the contact attachment groove 11c that has been formed by press fitting from below. In the first contact member 13, the fitting recess 13a bent and formed so as to extend in a substantially U-shape is formed so as to form a recess in the portion near the connector center near the partition plate 11d described above. A part of the second contact member 23 of the plug connector (second connector) 20 which is a mating body is inserted into the inner space of the fitting recess 13a from above.

That is, as described above, the fitting recess 13a of the first contact member 13 extending in a substantially U-shape is an outward rising side that rises upward from both sides of the bottom portion 13b extending in the connector width direction. It has a portion 13c and an inner vertical upper side portion 13d. Of these inner and outer compatible upper side portions 13c and 13d, the outer vertical upper side portion 13c arranged outward in the connector width direction is on the lower side with respect to the contact mounting groove 11c recessed in the longitudinal side wall portion 11a described above. It is fixed by being press-fitted from. Then, the above-mentioned bottom side portion 13b extends in a cantilever shape from the outward vertical upper side portion 13c in the fixed state toward the connector center (inward), and is inwardly erected through the bottom side portion 13b. The upper side portion 13d also extends like a cantilever. The inner vertical upper side portion 13d is arranged so as to be close to the partition plate 11d near the center of the connector, and faces the outer vertical upper side portion 13c fixed as described above in the connector width direction. It is made elastically displaceable in the direction of the connector.

The upper end portion of the inner vertical upper side portion 13d arranged on the center side of the connector is bent and formed so as to form a curved shape and project toward the inner space of the above-mentioned fitting recess 13a. The inner contact portion 13e is formed so as to form a convex shape in a portion of the bent portion that overhangs the inner space of the fitting recess 13a. As described above, the inner contact portion 13e is the second contact when a part of the second contact member 23 of the plug connector (second connector) 20 is inserted into the inner space of the fitting recess 13a. The members are in contact with a part of the member 23 and are electrically connected to each other. This point will be described in detail later.

Further, the outer vertical upper side portion 13c arranged on the outer side of the connector is inserted into the contact mounting groove 11c provided in the longitudinal side wall portion 11a as described above, and is inserted into the inner space of the fitting recess 13a. The outer contact portion 13f is formed so as to form a convex shape at the portion facing the surface. As described above, the outer contact portion 13f is the second contact when a part of the second contact member 23 of the plug connector (second connector) 20 is inserted into the inner space of the fitting recess 13a. The members are in contact with a part of the member 23 and are electrically connected to each other. This point will also be described in detail later.

As described above, the first contact member 13 of the receptacle connector (first connector) 10 is provided with two inner contact portions 13e and outer contact portions 13f for each fitting recess 13a of each first contact member 13. A signal to the second contact member 23 of the plug connector (second connector) 20 via the inner contact portion 13e and the outer contact portion 13f provided for each first contact member 13. It is configured for transmission.

Further, the outer vertical upper side portion 13c of the first contact member 13 is raised from the above-mentioned bottom side portion 13b to the upper surface position of the receptacle connector (first connector) 10 and projects toward the outer side of the connector. It is bent into an inverted U shape so as to be inverted downward later, and at the lower surface position of the receptacle connector 10, it is bent again at a substantially right angle toward the outer side of the connector and the first contact connection portion (signal connection portion). ) It is made to 13g. The first contact connection portion 13g extends substantially horizontally toward the outside in the connector width direction, and is shown in FIG. 25 when the receptacle connector 10 is mounted on the first wiring board P1. It is soldered to the signal transmission conductive path (signal pad) P1a on the first wiring board P1. The solder joining of the first contact connecting portion 13g is performed collectively for all the first contact connecting portions 13g using a long solder material.

[About the contact member of the plug connector]
Next, as shown in FIG. 17, the central recess 21b of the second housing 21 in the plug connector (second connector) 20 extends substantially parallel to the connector longitudinal direction (arrangement direction of the second contact 23). It has a pair of longitudinal side wall portions 21d and 21d. In each of the longitudinal side wall portions 21d, a plurality of contact mounting grooves (not shown) forming a concave groove shape are arranged at regular intervals along the longitudinal direction of the connector, with respect to the contact mounting c. The second contact member 23 is attached by insert molding so as to form two rows of electrodes. The second contact member 23 constituting these two rows of electrodes is arranged so as to be symmetrically opposed to each other in the connector width direction.

More specifically, the central recess 21b of the second housing 21 to which the second contact member 23 is attached is located between the two rows of electrodes described above, particularly as shown in FIGS. 15 and 16. A portion, that is, a portion between the longitudinal side wall portions 21d and 21d on both sides is formed so as to form a concave space extending in the longitudinal direction of the connector, and each longitudinal side wall portion 21d is surrounded by the outer periphery in the cross section. The second contact member 23 is attached. The pair of second contact members 23, 23 constituting the electrode rows on both sides are arranged to face each other so as to form a symmetrical shape in the connector width direction.

In each of the second contact members 23, a portion having an inverted U-shaped cross section and projecting upward is formed in the fitting convex portion 23a. The fitting protrusions 23a are inserted from above into the fitting recesses 13a provided in the first contact member 13 of the receptacle connector (first connector) 10 which is the mating body, and the first contact member 13 is inserted. Is elastically displaced so that it can be accepted inside the fitting recess 13a.

Here, the fitting convex portion 23a having an inverted U shape in the second contact member 23 described above includes an inner wall surface near the center of the connector extending substantially parallel in the vertical direction and an outer wall surface near the outside of the connector. However, on each wall surface inside and outside the connector, the inner contact portion 23b and the outer contact portion 23c are formed so as to form, for example, a concave shape. Then, both electric connectors 10 and 20 are fitted to each other, and a plug connector (first) is inserted into the inner space of the fitting recess 13a of the first contact member 13 provided in the receptacle connector (first connector) 10 described above. When the fitting convex portion 23a of the second contact member 23 provided on the 2 connector) 20 is inserted, the inner contact portion 23b and the outer contact portion 23c of the plug connector 20 are inside the receptacle connector 10 described above. Signal transmission is performed by elastically contacting the square contact portion 13e and the outer contact portion 13f and making an electrical connection.

Further, the inner wall portion of the fitting convex portion 23a of the second contact member 23 extends downward and is embedded in the bottom surface portion of the second housing 21. The embedded portion of the second contact member 23 is bent outward at a substantially right angle toward the outside in the connector width direction at the lower surface position of the plug connector 20, and the horizontally extending portion thereof is the second contact connection portion (signal). Connection part) 23d. These second contact connection portions 23d are solder-bonded to the signal transmission conductive path (signal pad) P2a on the second wiring board P2 as shown in FIG. 26 when the plug connector 20 is mounted. .. The solder joining of these second contact connection portions 23d is performed collectively for all the second contact connection portions 23d using a long solder material.

[About the shield shell of the receptacle connector]
Next, the shield shell 12 provided as the shield wall portion on the receptacle connector (first connector) 10 is formed of a frame-shaped structure divided into two bodies, particularly as shown in FIG. , Are mounted on the first housing 11 in a state of being opposed to each other so as to face each other symmetrically in the width direction of the connector. Each of the pair of first shield shells 12, 12 is formed of a folded member of a thin plate-shaped metal having a substantially U-shape in a plan view, and each of the pair of first shield shells 12 has a substantially U-shape in a plane. The longitudinal side wall plate 12a constituting the long side portion of the is arranged so as to extend along the longitudinal direction of the connector, and the short side wall portion constituting the short side portion having a substantially U-shaped plane. The plate 12b is arranged so as to extend along the width direction of the connector. Then, the longitudinal side wall plates 12a, 12a constituting the pair of shield shells 12, 12 and the short side wall plates 12b, 12b are arranged in a state of facing each other substantially in parallel, and such facing arrangement. By making a relationship, a frame structure in which the overall shape when viewed in a plan view is substantially rectangular is constructed.

Here, fixed locking pieces 12c with respect to the first housing 11 are provided at the four corner portions which are the connecting portions between the longitudinal side wall plate 12a and the short side wall plate 12b of each first shield shell 12. Each of these fixed locking pieces 12c extends from the upper edge portion of the longitudinal side wall plate 12a and the lateral side wall plate 12b so as to project toward the center (inward) of the connector, but extends from the lateral side wall plate 12b. The extending fixed locking piece 12c has a curved shape that is bent so as to extend downward in an inverted U shape from the overhanging portion toward the center (inward) of the connector. Then, the fixed locking piece 12c extending from the short side wall plate 12b is press-fitted from above with respect to the base end portion 11a of the first housing 11 described above, whereby the entire shield shell 12 is first. It is fixed to the housing 11.

As described above, the first shield shell 12 having a frame structure having a substantially rectangular plane is attached to the first housing 11 by being configured to surround the outer periphery of the first housing 11 over the entire circumference. 1 The contact member 13 is electromagnetically shielded.

In particular, the longitudinal side wall plate 12a of the first shield shell 12 is erected at a position forming a predetermined distance in the connector width direction from the first contact connection portion (signal connection portion) 13g of the first contact member 13 described above. The arrangement is such that the longitudinal side wall plate 12a of the shield shell 12 faces the outer end surface of the first contact connection portion 13g of the first contact member 13 in the longitudinal direction of the connector (arrangement direction of the first contact member 13). It is extended to. As a result, electromagnetic shielding from the entire first contact member 13 including the first contact connection portion 13g is appropriately provided through the space portion between the first contact connection portion 13g described above and the longitudinal side wall plate 12a of the shield shell 12. It is configured to be well performed in a state of impedance matching.

Further, with respect to the longitudinal side wall plate 12a of such a first shield shell 12, the longitudinal side wall portion 11e of the first housing described above is within the connector width direction, particularly as shown in FIGS. 6 and 8. It is arranged in a state of being separated from each other (on the center side of the connector) via a gap portion 11f forming a predetermined interval. The gap portion 11f is arranged in a portion of the outer end surface of the longitudinal side wall portion 11e of the first housing excluding both ends in the longitudinal direction of the connector, that is, in the longitudinal direction of the connector in a range facing the first contact member 13 described above. By providing the gap portion 11f, the outer end surface of the longitudinal side wall portion 11e of the first housing is separated from the longitudinal side wall plate 12a of the first shield shell 12 inward in the connector width direction. ..

If such a gap portion 11f is provided, the connection state of the first contact member 13 and the like can be observed from above through the gap portion 11f. Further, by adjusting the size of the gap portion 11f, the impedance characteristic based on the gap portion 11f is adjusted to a suitable state.

As described above, it is also an object of the present invention to provide an electric connector device for connecting a substrate, which enables the shield function and impedance characteristics of the shield shell to be suitably obtained.

[About the 1st board connection part]
On the other hand, as shown in FIG. 7, in particular, the lower end edge of the longitudinal side wall plate 12a of the first shield shell 12 is formed from a plate-shaped protrusion piece protruding toward the main surface of the lower first wiring board P1. The first substrate connection portion (ground connection portion) 12d is integrally formed. The first board connecting portions 12d are provided over a plurality of bodies in the longitudinal direction of the connector, and each of the first board connecting portions 12d arranged in the longitudinal direction of the connector is particularly shown in FIG. Similarly, it is arranged between the first contact members 13 and 13 adjacent to each other in the longitudinal direction of the connector.

The plate-shaped projection pieces constituting each of these first board connection portions (ground connection portions) 12d are in the connector width direction from the lower end edge portion of the longitudinal side wall plate 12a forming a part of the first shield shell 12. It is formed so as to project outward, and the side surface shape when viewed in the longitudinal direction of the connector is a crank shape. That is, as shown particularly in FIGS. 7 and 24, the first board connection portion 12d faces outward in the connector width direction from the outer end surface in the connector width direction in the above-mentioned first shield shell 12. It has a stepped portion 12d1 overhanging, and the connecting piece portion 12d2 projects from the stepped portion 12d1 toward the main surface of the first wiring board P1 below.

Then, the connection piece portion 12d2 forming the lower end portion of the first board connection portion (ground connection portion) 12d is provided with respect to the ground conductive path (ground pad) P1b formed on the main surface of the first wiring board P1. The electrical connection is made by soldering. In that case, the solder bonding of the first substrate connecting portion 12d can be collectively performed for all the first substrate connecting portions 12d using a long solder material.

Here, as shown particularly in FIG. 24, the connection piece portion 12d2 of the first board connection portion (ground connection portion) 12d described above has an inner end surface 12d3 inward in the connector width direction (plate thickness direction). However, the inner end surface 12d3 of the connection piece portion 12d2 is a second shield shell 22 when the plug connector (second connector) 20 is fitted to the receptacle connector (first connector) 10. It is configured to be arranged within the range of the plate width t in the connector width direction. Therefore, the longitudinal side wall plate 12a of the first shield shell 12 is inward in the connector width direction over the step portion in the connector width direction of the step portion 12d1 of the first board connection portion 12d described above with respect to the connection piece portion 12d2. The first shield shell 12 is located inward in the width direction of the connector, so that when both electric connectors 10 and 20 are fitted to each other, the first shield shell 12 is located on the outside of the first shield shell 12. The second shield shell 22 to be arranged is arranged inward in the connector width direction as compared with the conventional case, whereby the width dimension of the entire electric connector device is reduced in the connector width direction.

Further, the first shield shell 12 is provided in a state of being separated upward from the main surface of the first wiring board P1 over the height of the connection piece portion 12d2 of the first board connection portion (ground connection portion) 12d described above. There is. Therefore, a space for making an electrical connection to the first wiring board P1 is formed in the lower portion of the first shield shell 12, and is within the connector width direction with respect to the first shield shell 12. The first shield shell 12 is in a state where it is difficult for the first shield shell 12 to interfere with the signal transmission conductive path (signal pad) P1a to which the first contact member 13 arranged on the side is connected. As a result, the first shield shell 12 can be brought closer to the signal transmission conductive path (signal pad) P1a, and the ground conductive path (ground pad) P1b to which the first shield shell 12 is connected can be connected to the first contact member. By approaching the signal transmission conductive path (signal pad) P1a to which the 13 is connected in the connector width direction, the entire electric connector device can be further miniaturized.

On the other hand, the longitudinal side wall plate 12a of the first shield shell 12 described above is provided with a leaf spring piece 12e projecting in the connector width direction so as to cut up. A plurality of the leaf spring pieces 12e are provided at regular intervals in the longitudinal direction of the connector, and the tip portion of the leaf spring pieces 12e is on the outer side in the connector width direction from the outer surface of the first shield shell 12. It is formed so as to project diagonally toward it.

Then, when the plug connector (second connector) 20 is fitted to the receptacle connector (first connector) 10 from above, the tip portion of the leaf spring piece 12e described above is the second shield of the plug connector 20. The arrangement is such that the shell 22 is in elastic contact with the shell 22 from the inside.

Further, a plurality of (pair) engaging pieces 12f fixed to a part of the first housing 11 are provided between both ends of the first shield shell 12 in the extending direction (longitudinal direction of the connector). .. That is, in the middle portion of the longitudinal side wall plate 12a of the first housing 11 in the longitudinal direction of the connector, a plurality of (pair) locking portions 11g are provided at positions corresponding to the engaging pieces 12f of the first shield shell 12 described above. It is provided so as to project outward in the width direction of the connector. Each of these locking portions 11g is formed with a locking hole penetrating in the vertical direction, and the first shield shell is provided with respect to the locking hole provided in each of the locking portions 11g of the first housing 11. The engaging piece 12f provided on the 12 is press-fitted from above.

With such a configuration, the entire first shield shell 12 is maintained in a firmly fixed state to the first housing 11 via the engaging piece 12f, and there is a risk of bending or deformation of the first shield shell 12. Therefore, the size of the gap portion 11f can be kept constant, and a suitable shielding function (electromagnetic shielding) and impedance characteristics can be obtained.

[About the shield shell of the plug connector]
On the other hand, as shown in FIG. 17, the shield shell 22 provided as the shield wall portion on the plug connector (second connector) 20 is also formed of a frame-shaped structure divided into two bodies. It is mounted on the second housing 21 in a state of being opposed to each other so as to face each other symmetrically in the width direction of the connector. Each of the pair of second shield shells 22 and 22 is formed of a folded member of a thin plate-shaped metal having a substantially U-shape in a plan view, and each of the pair of second shield shells 22 has a substantially U-shape in a plane. The longitudinal side wall plate 22a constituting the long side portion of the connector is arranged so as to extend along the longitudinal direction of the connector.

Further, fixed locking pieces 22b and 22b as short side wall plates bent at a substantially right angle toward the other shield shell 22 are integrally connected to both ends of the above-mentioned longitudinal side wall plate 22a in the longitudinal direction of the connector. It is set up. The fixed locking pieces (short side wall plates) 22b and 22b of each of the shield shells 22 extend in the connector width direction, and form a base end portion of the first housing 11 in the connector longitudinal direction. It is attached to the inside of the portions 21a and 21a by press fitting or insert molding, whereby the entire shield shell 22 is fixed to the second housing 21.

The longitudinal side wall plates 22a and 22a constituting the pair of second shield shells 22 and 22 described above are arranged in a state of facing each other substantially in parallel with each other, and fixed locking constituting the short side wall plate. By arranging the pieces 22b and 22b so as to butt against each other in the width direction of the connector, a frame structure having a substantially rectangular shape as a whole when viewed in a plan view is formed.

As described above, in the plug connector (second connector) 20 according to the present embodiment, the fixed locking pieces (short side wall plates) 22b provided at both ends of the longitudinal side wall plate 22a of the second shield shell 22 are the second. Since the 1 housing 11 is inserted (embedded) inside the base end portion 21a, the shield shell 22 is housed within the total length range in the longitudinal direction of the connector of the second housing 21 and is shielded. The shell 22 does not project outward from the second housing 21, and the entire connector can be miniaturized in the longitudinal direction of the connector. In addition, in the present embodiment, the second substrate connecting portion (ground connecting portion) 22c of the second shield shell 22 is arranged so as to be contained within the plate thickness range of the plate-shaped member constituting the shield shell 22. Therefore, the shield shell 22 does not project outward, and the entire connector can be further miniaturized in the width direction of the connector.

Further, as described above, in each of the receptacle connector (first connector) 10 and the plug connector (second connector) 20, a pair of first shield shells 12, 12 having a substantially U-shaped plane and a second shield shell are formed. 22 and 22 are arranged to face each other in the width direction of the connector to form a frame structure, and both of the electric connectors 10 and 20 are in a fitted state as shown in FIGS. 18 to 24. Then, the second shield shell 22 provided in the plug connector 20 is arranged outside the first shield shell 12 provided in the receptacle connector 10, and the first shield shell 12 is arranged in the connector width direction. The longitudinal side wall plate 22a of the second shield shell 22 is arranged at an outer position in the connector width direction with respect to the longitudinal side wall plate 12a.

More specifically, with respect to the outer end surface in the connector width direction of the longitudinal side wall plate 12a of the first shield shell 12, the connector width direction of the longitudinal side wall plate 22a of the second shield shell 22. The inner end faces of the first shield shell 12 face each other in the width direction of the connector and overlap each other, and the second shield shell 22 is located at the outer position of the outer end face in the longitudinal direction of the connector on the short side wall plate 12b of the first shield shell 12. The inner end faces of the fixed locking pieces 22b forming the short side wall plate in the longitudinal direction of the connector face each other in the longitudinal direction of the connector and overlap each other. As a result, the entire circumference of the electric connector device is completely covered by the shield wall portion, and an extremely good shield function can be obtained.

Here, on the lower end edge of the longitudinal side wall plate 22a of the second shield shell 22 and the fixed locking piece (short side wall plate) 22b, a plate-shaped protrusion piece protruding downward toward the surface of the second wiring board P2. The second substrate connecting portion (ground connecting portion) 22c made of the same is formed over a plurality of bodies. The plate-shaped projection pieces constituting each of these second substrate connecting portions 22c are formed so as to have a flush surface with the longitudinal side wall plate 22a and the fixed locking piece (short side wall plate) 22b so as to be continuous. It extends within the plate thickness range of the plate-shaped member constituting the longitudinal side wall plate 22a and the fixed locking piece (short side wall plate) 22b.

The lower end of the second board connection portion (ground connection portion) 22c described above is relative to the ground conductive path (ground pad) P2b provided on the main surface of the second wiring board P2 shown in FIG. 26. Electrical connection is made by soldering, but in that case, the solder bonding of the second board connection part 22c is performed collectively for all the second board connection parts 22c using a long solder material. Is done.

Here, the longitudinal side wall plate 22a of the second shield shell 22 in the present embodiment is at a position forming a predetermined distance in the connector width direction from the second contact connection portion (signal connection portion) 23d of the second contact member 23 described above. , The arrangement is such that it is erected on the surface of the second wiring board P2. That is, the longitudinal side wall plate 22a of the shield shell 22 faces the outer end surface of the second contact connection portion 23d of the second contact member 23 in the connector longitudinal direction, while the connector longitudinal direction (arrangement direction of the second contact member 23). ), The electromagnetic shielding for the entire second contact member 23 including the second contact connecting portion 23d is between the above-mentioned second contact connecting portion 23d and the longitudinal side wall plate 22a of the shield shell 22. It is configured to be well performed in a state where the impedance is appropriately matched through the space portion of the above.

As described above, in the present embodiment, in each of the receptacle connector (first connector) 10 and the plug connector (second connector) 20, the first contact connection portion (signal connection portion) 13 g and the second contact connection portion (signal connection) are used. Part) The electromagnetic shielding action against 23d is obtained by the first shield shell 12 and the second shield shell 22 provided as the respective shield wall portions. When both electric connectors 10 and 20 are fitted to each other, the first shield shell 12 and the second shield shell 22 are doubly arranged inside and outside, and the first shield shell 12 and the second shield are used. Since the gap formed between one of the shells 22 and one of the wiring boards P1 and P2 is partially covered by the other of the first shield shell 12 and the second shield shell 22, the electrical connector An extremely good electromagnetic shielding action can be obtained as a device. In particular, since the gap between the first shield shell 12 and the second shield shell 22 and the first and second wiring boards P1 and P2 can be efficiently closed, sufficient EMI countermeasures can be expected.

In addition, in the present embodiment, when the receptacle connector (first connector) 10 and the plug connector (second connector) 20 are fitted, the first shield shell is particularly shown in FIG. 24. The longitudinal side wall plate 22a of the second shield shell 22 is arranged at a position above the first board connecting portion (ground connecting portion) 12d provided in 12. That is, the fitting position of the longitudinal side wall plate 22a of the second shield shell 22 in the connector width direction overlaps with the first board connection portion 12d of the first shield shell 12 in the connector width direction. As a result, the position is inward in the connector width direction with respect to the ground conductive path (ground pad) P1b to which the first board connecting portion 12d and the first board connecting portion 12d of the first shield shell 12 are connected. The longitudinal side wall plate 22a of the second shield shell 12 is arranged.

That is, since the first shield shell 12 is arranged inward in the connector width direction with respect to the first board connection portion 12d, the first shield shell 12 is fitted when both connectors 10 and 20 are fitted. The second shield shell 22 arranged on the outside of the connector is arranged on the inside of the connector as compared with the conventional case. Therefore, even when the ground conductive path (ground pad) P1b is separated from the signal transmission conductive path (signal pad) P1a at an outer position in the connector width direction, the second shield shell is as described above. Since the longitudinal side wall plate 22a of the 12 is moved inward in the connector width direction, the entire electric connector device is narrowed in the connector width direction to reduce the size.

Further, in the present embodiment, the first board connection portion (ground connection portion) 12d provided in the first shield shell 12 is outward in the same direction from the outer end surface in the connector width direction in the first shield shell 12. The connecting piece portion 12d2 projects downward from the stepped portion 12d1 projecting toward the main surface, and the connecting piece portion 12d2 projects toward the main surface of the first wiring board P1. The whole is maintained in a state separated from the main surface of the first wiring board P1. Therefore, the first shield shell 12 in the present embodiment is a signal transmission conductive path to which the first contact connection portion (signal connection portion) 13g provided on the first contact member 13 and the first contact member 13 are connected. Signal pad) It is in a state where it is difficult to interfere with P1a.

As described above, according to the present embodiment, the first shield shell 12 is provided with a space portion below the first shield shell 12 to avoid interference with the first contact connection portion (signal connection portion) 13g. 1 The first shield shell 12 is brought closer to the signal transmission conductive path (signal pad) P1a than in the case where it is close to the main surface of the wiring board P1 and easily interferes with the first contact connection portion 13g. The ground conductive path (ground pad) P1b to which the first shield shell 12 is connected is connected to the signal transmission conductive path (signal pad) P1a to which the first contact member 13 is connected in the connector width direction. By bringing them closer, the overall size of the electric connector device can be further reduced.

Further, in the present embodiment, the second shield shell 22 provided on the plug connector (second connector) 20 has a longitudinal side wall plate 22a of the second shield shell 22 when both electric connectors 10 and 20 are fitted to each other. The inner wall surface (inner end surface) of the receptacle is elastically in contact with the tip end portion of the leaf spring piece 12e provided on the first shield shell 12 of the receptacle connector (first connector) 10 from the outer side. As a result, the first shield shell 12 and the second shield shell 22 are electrically connected to each other, and a part of the ground circuit is formed through the leaf spring piece 12e. Therefore, the contact area of the leaf spring piece 12e. The electrical conductivity is improved by that amount, the ground resistance is reduced, and the shield characteristics are improved.

Although the invention made by the present inventor has been specifically described above based on the embodiment, the present embodiment is not limited to the above-described embodiment and can be variously modified without departing from the gist thereof. Needless to say.

For example, in the above-described embodiment, the first board connection portion (ground connection portion) 12d provided on the first shield shell 12 is connected via a step portion 12d1 that projects outward in the connector width direction. Although it is configured to have a substantially crank shape on the side surface provided with the portion 12d2, the lower end edge portion of the first shield shell 12 is extended to a state in which it is close to the surface of the wiring board without interposing such a step portion. Directly from the lower end edge of the first shield shell 12, the first board connection portion (ground connection portion) is substantially oriented outward in the connector width direction by suppressing the amount of protrusion from the outer end surface of the longitudinal side wall plate 22a. It is also possible to form a horizontally extending side surface having a substantially L-shaped shape.

Further, the contact members 12 and 22 in the above-described embodiment have a two-row electrode configuration that faces each other symmetrically, but of course, a single-row (one-row) configuration is also possible.

As described above, the present invention can be widely applied to a wide variety of board-connecting electrical connector devices used in various electronic and electrical devices.

10 Receptacle connector (1st connector)
11 1st housing 11a Base end 11b Central convex 11c Contact mounting groove 11d Partition plate 11e Longitudinal side wall 11f Void 11g Locking 12 1st shield shell (shield wall)
12a Long side wall plate 12b Short side wall plate 12c Fixed locking piece 12d First board connection part (ground connection part)
12d1 Step 12d2 Connection piece 12d3 Inner end face 12e Leaf spring piece 12f Engagement piece 13 First contact member 13a Fitting recess 13b Bottom 13c Outer vertical upper side 13d Inner vertical upper side 13e Inner contact part 13f Outer Mullion contact part 13g 1st contact connection part (signal connection part)
20 plug connector (second connector)
21 2nd housing 21a Base end 21b Central recess 21d Long side wall 22 2nd shield shell (shield wall)
22a Long side wall plate 22b Fixed locking piece (short side wall plate)
22c 2nd board connection (ground connection)
23 Second contact member 23a Fitting convex part 23b Inner contact part 23c Outer contact part 23d Second contact connection part (signal connection part)
P1 1st wiring board P1a Conductive path for signal transmission (signal pad)
P1b Conductive path for ground (ground pad)
P2 2nd wiring board P2a Conductive path for signal transmission (signal pad)
P2b Conductive path for ground (ground pad)

Claims (3)

It is used while being connected to the main surface of the wiring board, and is fitted with other electrical connectors.
A plurality of contact members for signal transmission made of conductive members are attached to the insulating housing in parallel in the longitudinal direction of the connector, and a connector orthogonal to the longitudinal direction of the connector is attached to the contact members. At the outer position in the width direction, the side wall plate of the shield shell having conductivity is arranged so as to extend in the longitudinal direction of the connector.
The contact member is provided with a signal connection portion connected to the signal transmission conductive path of the wiring board, while the contact member is provided with a signal connection portion.
In an electric connector provided with a ground connection portion connected to a ground conductive path of the wiring board on the side wall plate of the shield shell.
The end face of the outside of the connector width direction of the side wall plate of the shield shell, the end face of the outside of the connector width direction of the ground connection portion, be one that is located inwardly of the connector width direction hand,
The ground connection portion faces the wiring board through a step portion of the side wall plate of the shield shell that projects outward in the connector width direction from the outer end surface in the connector width direction and a step portion that projects outward in the connector width direction. Has a protruding connection piece, and
Of the plurality of signal connection portions, the outer end face in the connector width direction of the signal connection portion closest to the connection piece portion of the ground connection portion is inside the connector width direction in the shield shell side wall plate. An electric connector characterized in that it is arranged inward in the width direction of the connector with respect to the end face of the connector. The contact member includes a contact portion connected to the contact member of the other electric connector, and an outer vertical upper side portion that rises from the wiring board in a state of facing the contact portion outward in the width direction of the connector. Have,
The signal connection portion is provided at the end of a portion that bends outward from the external vertical upper side portion and extends toward the wiring board in a state of being close to or in contact with the external vertical upper side portion. The electric connector according to claim 1. The housing is provided with a gap portion that separates the outer end surface of the housing in the connector width direction from the side wall plate of the shield shell inward in the connector width direction.
The electric connector according to claim 1, wherein the signal connection portion is arranged in the gap portion.

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