JP2010010030A - Shielding case and electrical connector using the shielding case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielding case 16 that is easy to process and that makes the EMC characteristics improve. <P>SOLUTION: The shielding case 16 has a substantial box shape and is used for an electrical connector 10 that is mounted on a substrate 80. In the shielding case 16 having a fitting hole 18 through which an object fits, and a plurality of terminal portions 36 to be mounted on the substrate 80, a plurality of contact pieces 20 are disposed on the perimeter of the fitting hole 18; second contact pieces 22, that have heights identical to those of the contact pieces 20 are provided by open-up processing between the contact pieces, that are disposed on the top surface 28 (side opposite to that connected to the substrate) and both sides 30, 30, or are provided with third contact pieces 20 that are level with the contact pieces 20 are provided by open-up processing, in the same manner as for providing the second contact pieces 22, between the contact pieces 20 that are disposed on both the top surface 28 (side opposite to that connected to the substrate) and the sides 30, 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shielding case used for an electrical connector used in Fiber Channel, Gigabit Ethernet (registered trademark), and the like, and particularly relates to a structure of a shielding case for improving EMC characteristics.

Examples of the shell having a shielding effect include the following documents. Electrical connectors are shown in the Small Form Factor Pluggable (SFP) standard. The electrical connector mainly comprises a plurality of contacts, a housing and a shell. FIG. 4 shows a conventional electrical connector 101. The conventional electrical connector 101 includes a connector main body 11 (having two types of contacts 14 and 15 attached to the housing 12), a shielding case 161 and a cover 17. FIG. 4 is a perspective view of the connector main body attached to the shielding case, the cover, and the substrate.
Below, the patent document 1 (Unexamined-Japanese-Patent No. 2005-56615) already proposed by the present applicant is shown as a patent document.
According to the summary of Japanese Patent Application Laid-Open No. 2005-56615 of Patent Document 1, the shells 16 and 18 that can be mounted simultaneously with the connector body 20 without being deformed without being deformed or broken even when being fitted. In order to provide an electrical connector 10 having a plurality of contacts, a plurality of contacts 14, a housing 12 for fixing and arranging the contacts 14, a plurality of terminals that cover the housing 12 and are mounted on a mating opening 22 and a substrate 40 In the electrical connector 10 having the portion 32 and having the shells 16 and 18 divided into two parts, one shell 16 is formed as a substantially casing, and the shell 16 on the fitting port 22 side is formed into an integral structure. The other shell 18 has an opening 23 large enough to fit into the housing 12, and the other shell 18 has a substantially L-shape and is attached to the opening 23 of one shell 16. Electrical connector structure which can be achieved by placing the so that is disclosed. Incidentally, in the scope of claims of Japanese Patent Application Laid-Open No. 2005-56615, as claimed in claim 1, an electrical connector mounted on a substrate, comprising a plurality of contacts, a housing for fixing and arranging the contacts, and covering the housing An electrical connector having a fitting port with a mating object and a plurality of terminal portions mounted on a board, and having a shell divided into two, wherein one shell is substantially a housing and the shell on the fitting port side With an opening that is large enough to accommodate the housing on the opposite side of the fitting opening, the other shell is substantially L-shaped, and is placed so as to be attached to the opening of the one shell. The electrical connector according to claim 1, wherein the opening is made 1.5 to 2.0 times the length of the housing. 5. The electrical connector according to claim 1, wherein the length of the one shell is 1.5 to 3.0 times that of the opening. An electrical connector or the like according to claim 2, wherein the arranged housings can be simultaneously mounted on the substrate.

  In recent years, there is an increasing demand for further improvement of EMC characteristics. In order to improve EMC characteristics, it is necessary to provide the contact piece on the fitting port side as small as possible and on the entire circumference. Since the shielding case of the present invention is long and heavy, the fitting port side and the opposite side are directly connected to the carrier, or a crosspiece (connecting portion) is provided to provide a crosspiece (connecting portion). Part) need to be connected. From the relationship between the feeding direction of the material and the bending direction, the case is provided with a crosspiece (connecting portion) and connected to the crosspiece (connecting portion). The contact pieces cannot be provided in the connected portions in order to improve EMC characteristics. The distance between the contact pieces is preferably as narrow as possible, but it is necessary to consider the strength (case, punch, etc.).

  The present invention has been made in view of such conventional problems, and is intended to provide a shielding case that can be easily processed and improved in EMC characteristics, and an electrical connector using the shielding case. It is.

  The object of the present invention is to provide a shielding case 16 used in the electrical connector 10 mounted on the board 80, as described in claim 1, and a plurality of terminal portions mounted on the mating port 18 and the board 80 for mating objects. In the substantially box-shaped shielding case 16 having a plurality of contact pieces 20 on the entire circumference on the fitting opening 18 side, between the contact pieces 20 disposed on the upper surface 28 (on the side opposite to the board connection) The second contact piece 22 having the same height as that of the contact piece 20 is provided by cutting and raising, and is bent in the same manner as the contact piece 20 between the contact pieces 20 arranged on both side surfaces 30, 30. This can be achieved by the shielding case 16 characterized in that the third contact piece 24 having the same height as the contact piece 20 is provided by processing.

  The object of the present invention is to provide a shielding case 16 used in the electrical connector 10 mounted on the board 80 as described in claim 2, and a plurality of terminal portions mounted on the board 80 and the mating port 18 for mating objects. In the substantially box-shaped shielding case 16 having a plurality of contact pieces 20 on the entire circumference on the fitting port 18 side, the upper surface 28 (the side opposite to the board connection) and the both side surfaces 30 and 30 are disposed. This can also be achieved by a shielding case 16 in which a second contact piece 22 having the same height as the contact piece 20 is provided by cutting and raising between the contact pieces 20.

The shielding case 16 according to claim 3 is provided with a crushing portion 26 by crushing so as to interfere with the case main body 19 when the free end of the second contact piece 22 is displaced. The shield case 16 is described.
4. The shielding case 16 according to claim 4, wherein a clearance between the contact piece 20 and the second contact piece 22 is 0.1 to 0.4 mm. In the shielding case 16.

The shielding case 16 according to claim 5 is a fourth contact piece in which the contact piece 20 and the third contact piece 24 on both side surfaces 30 and 30 and the contact piece 20 and the second contact piece 22 are integrated by bending. 38. The shielding case 16 according to claim 1, 2, 3 or 4, characterized in that it is 38.
Further, the shielding case 16 according to the sixth aspect of the present invention has an extended portion 39 that has a press-fit structure for the terminal portion 36 and extends in a substantially L shape so as to cover the housing 12 holding the contact 14. 6. The shielding case 16 according to claim 1, wherein the shielding case 16 is provided.

  According to a seventh aspect of the present invention, there is provided the electrical connector 10 characterized in that the shielding case 16 according to the first to sixth aspects covers the housing 12 in which a plurality of contacts 14 are held and arranged.

As is apparent from the above description, the shielding case of the present invention and the electrical connector using the shielding case provide the following excellent effects.
(1) As described in claim 1, the shielding case 16 used in the electrical connector 10 mounted on the board 80, and the plurality of terminal portions 36 mounted on the mating port 18 with the mating object and the board 80. In the substantially box-shaped shielding case 16 having a plurality of contact pieces 20 on the entire periphery on the fitting port 18 side, the upper surface 28 (the side opposite to the substrate connection) and the both side surfaces 30 and 30 are disposed. Since the shielding case 16 is characterized in that the second contact piece 22 having the same height as the contact piece 20 is provided by cutting and raising between the contact pieces 20, a simple processing method is used. Also, the EMC characteristics can be improved.
(2) As described in claim 2, the shielding case 16 used in the electrical connector 10 mounted on the substrate 80, and the plurality of terminal portions 36 mounted on the mating port 18 with the counterpart and the substrate 80. In the substantially box-shaped shielding case 16 having a plurality of contact pieces 20 on the entire periphery on the fitting port 18 side, the upper surface 28 (the side opposite to the substrate connection) and the both side surfaces 30 and 30 are disposed. Since the shielding case 16 is characterized in that the second contact piece 22 having the same height as the contact piece 20 is provided by cutting and raising between the contact pieces 20, a simple processing method is used. Also, the EMC characteristics can be improved.
(3) The shielding case 16 of the third aspect is characterized in that a crushing portion 26 is provided by crushing so as to interfere with the case main body 19 when the free end of the second contact piece 22 is displaced. Since the shielding case 16 described in 1 or 2 is used, it is possible to improve the EMC characteristics as compared with the conventional case by a simple processing method and enter the fitting port 18 when the second contact piece 22 is displaced. There is nothing.
(4) The shielding case 16 according to claim 4 has a gap between the contact piece 20 and the second contact piece 22 of 0.1 to 0.4 mm. Since the shielding case 16 is used, the EMC characteristics can be improved by a simple processing method as compared with the conventional case.
(5) The shielding case 16 according to the fifth aspect is formed by integrating the contact piece 20 and the third contact piece 24 and the contact piece 20 and the second contact piece 22 on both side surfaces 30 and 30 by bending. Since the shielding case 16 according to the first, second, third, or fourth aspect is provided with the four-contact piece 38, the EMC characteristics can be improved by a simple processing method.
(6) The shielding case 16 according to the sixth aspect has an extension portion in which the terminal portion 36 has a press-fit structure and extends in a substantially L shape so as to cover the housing 12 holding the contact 14. Since the shielding case 16 according to any one of claims 1 to 5 is provided, the EMC characteristics can be improved by a simple processing method.

(7) Since the electrical connector 10 of the seventh aspect is the electrical connector 10 characterized by covering the housing 12 in which the plurality of contacts 14 are held and arranged in the shielding case 16 of the first to sixth aspects. With a simple processing method, it is possible to improve the EMC characteristics as compared with the prior art.

A feature of the present invention is a shielding case 16 used for the electrical connector 10 mounted on the board 80, and includes a fitting port 18 with a counterpart and a plurality of terminal portions 36 mounted on the board 80. In the substantially box-shaped shielding case 16 having a plurality of contact pieces 20 on the entire circumference on the fitting port 18 side, between the contact pieces 20 arranged on the upper surface 28 (opposite side to the board connection) and the both side surfaces 30, 30. A second contact piece 22 having the same height as the contact piece 20 is provided by cutting and raising, or between the contact pieces 20 arranged on the upper surface 28 (opposite side of the substrate connection) and both side surfaces 30, 30. The shield case is characterized in that the second contact piece 22 having the same height as the contact piece 20 is provided by cutting and raising.
That is, the second contact piece 22 having the same height as the contact piece 20 between at least the upper surface 28 and both side faces 30, 30 of the contact piece 20 that has been around the entire circumference of the fitting port 18 conventionally. By providing the second contact piece 22 (on the upper surface 28) and the third contact piece 24 (on both side faces 30, 30), more contact can be made with the panel, and EMC characteristics are improved.

  First, a shielding case of the present invention and an electrical connector using the shielding case will be described with reference to FIGS. FIG. 1A is a perspective view of the shielding case of the present invention as viewed from above the fitting port, and FIG. 1B is a perspective view of the shielding case of the present invention as viewed from below the fitting port. FIG. 2 is a perspective view of the shield case and the connector main body attached to the board. 3A is a perspective view of the housing, and FIG. 3B is a perspective view of two types of contacts.

The shield case 16 is made of metal and is manufactured by a known press working. Since the material of the shielding case 16 is required to be springy or conductive, examples thereof include brass, beryllium copper, and phosphor bronze. The shielding case 16 in this embodiment has a substantially box shape as shown in FIG. The shielding case 16 includes a plurality of contact pieces (20, 22, 22, 24) provided on the outer periphery on the fitting port 18 side so as to contact at least the terminal portions 36 connected to the substrate 80 and the panel. Etc.
Below, each site | part is demonstrated.

  The shield case 16 is provided with a fitting port 18 into which a mating object is inserted on one side. That is, the fitting port 18 is formed by being covered with the upper surface 28, the two side surfaces 30, 30 and the bottom surface 32 of the case body 19. The size and shape of the fitting port 18 need only be inserted into the mating object, and are appropriately designed in consideration of the size and shape of the mating object, the clearance with the mating object, EMC characteristics, and the like.

  A plurality of contact pieces 20 are provided on the entire circumference (outer periphery) of the shielding case 16 on the side of the fitting port 18 by bending as in the prior art. That is, the top surface 28 is provided with three contact pieces 20 having a width of 2 mm on both sides and the center, and the side surface 30 is provided with two contact pieces 20 having a width of 2 mm on both sides. The bottom surface 32 is provided with two contact pieces 20 having a width of 2 mm on both sides. In order to further improve the EMC characteristics, the following was performed.

  A second contact piece 22 having the same height as that of the contact piece 20 is provided by cutting and raising between the contact pieces 20 arranged on the upper surface 28 (opposite side of the substrate connection), and both side surfaces 30 are provided. A third contact piece 24 having the same height as the contact piece 20 is provided between the contact pieces 20 arranged at 30 by bending as in the case of the contact piece 20. On the upper surface 28, as described in the above problem, since the contact pieces 20 are connected to the crosspieces (connecting portions), the contact pieces 20 cannot be formed by bending. The second contact piece 22 was formed. Since the side surface 30 is not connected to the crosspiece (connecting portion), the third contact piece 24 is formed by bending. Considering the improvement of the EMC characteristics, the gap between the contact piece 20 and the second contact piece 22 and the contact piece 20 and the third contact piece 24 are made as small as possible. Further, a fifth contact piece 41 is provided on the bottom surface 32 between the contact pieces 20 for locking with a counterpart.

  As another method, a second part having the same height as the contact piece 20 is formed by cutting and raising between the contact piece 20 arranged on the upper surface 28 (opposite side of the substrate connection) and both side faces 30 and 30. A contact piece 22 is provided. On the upper surface 28, as described in the above problem, since the contact pieces 20 are connected to the crosspieces (connecting portions), the contact pieces 20 cannot be formed by bending. The second contact piece 22 was formed. Although the side surface 30 is not connected to the crosspiece (joint portion), the second contact piece 22 is formed by cutting and raising in consideration of strength. Considering the improvement of EMC characteristics, the gap between the contact piece 20 and the second contact piece 22 is made as small as possible. Further, a fifth contact piece 41 is provided on the bottom surface 32 between the contact pieces 20 for locking with a counterpart.

  Since the second contact piece 22 is cut and raised, when the free end of the second contact piece 22 is displaced, the free end may enter the case body 19. It is desirable to provide a crushing portion 26 by crushing so as to interfere with the case body 19 when the free end of the piece 22 is displaced. The crushing portion 26 may have any shape and size as long as it interferes with displacement, but is appropriately designed in consideration of workability, strength, and the like.

  In the shielding case 16, the gap between the contact piece 20 and the second contact piece 22 is 0.1 to 0.4 mm. If it is 0.1 mm or less, adjacent contact pieces may interfere with each other, and if it is 0.4 mm or more, the EMC characteristics will not be improved.

  Although not shown, in the shielding case 16, the contact piece 20 and the third contact piece 24 on both side surfaces 30 and 30 and the contact piece 20 and the second contact piece 22 are integrated into a fourth contact by bending. The piece 38 may be used.

The shield case 16 is provided with an extended portion 39 that extends from the case main body 19 on the opposite side of the fitting port 18 in a substantially L shape integrally with both side surfaces 30, 30. A back surface 34 is formed in part so as to face the fitting port 18.
The shield case 16 is provided with an escape portion 37 for escaping (entering) the connector body 11 formed by the back surface 34, both side surfaces 30, 30 and the bottom surface 32 on the opposite side of the fitting port 18. Yes. The escape portion 37 may be formed by attaching the shielding case 16 to the substrate 80 in a state where the connector main body 11 is attached to the substrate 80. The size of the escape portion 37 is appropriately designed in consideration of strength, EMC characteristics, and the like. The ratio of the length of the bottom surface 32 and the escape portion 37 is 1.5 to 3.0.

  A plurality of terminal portions 36 protruding in the direction of the substrate 80 are provided at predetermined positions on the two side surfaces 30, 30 and the back surface 34. In this embodiment, the terminal portion 36 has a press-fit structure. That is, the structure can be fixed simply by press-fitting into the substrate 80. The position / size of the terminal portion 36 is appropriately designed in consideration of the holding force, the fixed balance, the strength of the substrate 80, and the like. In the present embodiment, as shown in FIG. 1, four on each side surface 30, 30 (total of eight) and three on the back surface 34.

  On the opposite side of the fitting port 18 and on the side surface 30 on the upper surface 28 side, pressing pieces 35 for pressing the mating object are provided on both sides in order to increase reliability against vibration. The pressing piece 35 only needs to be able to reliably press the counterpart, and is appropriately designed in consideration of elasticity, strength, and interference with the connector.

  Next, the housing 12 will be described. The housing 12 is an electrically insulating plastic, and is manufactured by a known technique of injection molding. The material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Generally, polybutylene terephthalate is used. (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof.

  The housing 12 has a required number of insertion holes 44 into which the contacts 14 are mounted, and is fixed by press-fitting, hooking (lance), welding, or the like. In this embodiment, it is fixed by press-fitting.

  Finally, the first contact 14 and the second contact 15 will be described. The first contact 14 and the second contact 15 are made of metal, and are made by a known press working. In consideration of the spring property, brass, beryllium copper, phosphor bronze, and the like can be given. The first contact 14 and the second contact 15 are mainly a first contact portion 46 and a second contact portion 47 that are in contact with an object (substrate), and a first fixing portion 48 and a second fixing portion that are fixed to the housing 12. The first connection part 50 and the second connection part 51 connected to the part 49 and the substrate 80 are provided. The shape of the first connection part 50 and the second connection part 51 may be either a surface mount type (SMT) or a dip type, and is appropriately designed according to the specifications. The first contact portion 46 and the second contact portion 47 are curved so as to easily come into contact with the counterpart. That is, the counterpart is held between the first contact portion 46 of the first contact 14 and the second contact portion 47 of the second contact 15.

  As an application example of the present invention, the present invention is applied to an electrical connector used for Fiber Channel, Gigabit Ethernet (registered trademark) or the like, and particularly relates to a structure of a shielding case for improving EMC characteristics.

(A) It is the perspective view which looked at the case for shielding of this invention from the fitting port upper direction. (B) It is the perspective view which looked at the case for shielding of this invention from the fitting port lower part. It is a perspective view of the connector main body attached to the case for shielding and a board | substrate. (A) It is a perspective view of a housing. (B) It is a perspective view of two types of contacts. It is a perspective view of the connector case attached to the conventional shielding case, cover, and board | substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,101 Electrical connector 11 Connector main body 12 Housing 14 First contact 15 Second contact 16, 161 Shield case 17 Cover 18 Fitting port 19 Case main body 20 Contact piece 22 Second contact piece 24 Third contact piece 26 Collapsed portion 28 Upper surface 30 side surface 32 bottom surface 34 back surface 35 pressing piece 36 terminal portion 38 fourth contact piece 39 extending portion 40 pressing piece 41 fifth contact piece 42 insertion port 44 insertion hole 46 first contact portion 47 second contact portion 48 first fixing portion 49 2nd fixing | fixed part 50 1st connection part 51 2nd connection part 80 Board | substrate

Claims (7)

A shielding case used for an electrical connector mounted on a board,
In a substantially box-shaped shielding case having a fitting port with a counterpart and a plurality of terminal portions mounted on the substrate, and having a plurality of contact pieces on the entire circumference of the fitting port side,
A second contact piece having the same height as the contact piece is provided by cutting and raising between the contact pieces arranged on the upper surface (opposite side of the substrate connection), and the contact pieces are arranged on both side surfaces. A third contact piece having the same height as the contact piece is provided by bending as in the case of the contact piece. A shielding case used for an electrical connector mounted on a board,
In a substantially box-shaped shielding case having a fitting port with a counterpart and a plurality of terminal portions mounted on the substrate, and having a plurality of contact pieces on the entire circumference of the fitting port side,
A shielding case, wherein a second contact piece having the same height as the contact piece is provided by cutting and raising between the contact pieces arranged on the upper surface (opposite side of the substrate connection) and both side surfaces. The shielding case according to claim 1 or 2, wherein a crushing portion is provided by crushing so as to interfere with the case main body when the free end of the second contact piece is displaced. The shielding case according to claim 1, wherein a gap between the contact piece and the second contact piece is 0.1 to 0.4 mm. 5. The contact piece and the third contact piece on both side surfaces, and the contact piece and the second contact piece are integrated into a fourth contact piece by bending. Shield case. The extension part extended in the substantially L shape so that the said terminal part may be made into a press-fit structure, and the said housing with which the said contact was hold | maintained is provided. A shielding case according to claim 1. 7. An electrical connector according to claim 1, wherein said housing covers a housing in which a plurality of contacts are held and arranged.

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