Connectors

Abstract

A connector comprises: a cage shell having a top and a bottom and comprising a plurality of inner walls forming a first cabin body and a second cabin body, the first cabin body being arranged above the second cabin body, each cabin body having a top wall, a bottom wall and a side wall connecting the top wall and the bottom wall together, each wall forming an internal area extending from the butt end of the cage body, and a first cap located on the top wall of the first cabin body and comprising: a side wall extending upward from the top wall; and an upper wall at the end of the side wall of the first cap cover and spaced apart from the top wall, the side wall and the upper wall of the first cap cover forming a keyway, the keyway being connected to the internal area, the keyway extending from the butt end of the cage body; and a second cap located on the bottom wall of the second cabin body and comprising: a side wall extending downward from the bottom wall; and a lower wall at the end of the side wall of the second cap cover and spaced apart from the bottom wall, the side wall and the lower wall of the second cap cover forming a keyway, the keyway being connected to the internal area, the keyway extending from the butt end of the cage body.

Description

[0001] This application is a divisional application of an application whose applicant is "Morris Ltd.", whose application date is November 20, 2018, whose application number is 201880075309.3, and whose invention name is "Keyed Input / Output Connector". Technical Field

[0002] The present invention relates to the field of input / output (IO) connectors, and more particularly to I / O connectors suitable for use in high data rate applications. Background Art

[0003] Input / output (IO) connectors are often used in applications that require high bandwidth. For example, small form factor pluggable (SFP) type connectors were originally developed to provide one transmit channel and one receive channel (e.g., to demonstrate the so-called 1X connector), and the performance of SFP connectors has gradually increased, allowing them to support 16Gbps and even 25+Gbps channels. A 1X connector was soon determined to be insufficient to meet certain needs, and a quad small form factor pluggable (QSFP) type connector was developed to provide more channels and act as a 4X connector.

[0004] Although larger connectors have been developed, there is still a need to increase density. To achieve this, a second row of channels is added to the current configuration. This type of (I / O) is often called double density and can be applied to the original or legacy form factors of SFP (SFP-DD) and QSFP (QSFP-DD), thus doubling the density of channels. However, certain groups of people will appreciate further improvements to the design of this pluggable connector.

[0005] In order to support higher signal transmission speeds within independent channels, such as 16Gbps or even 25+Gbps, effective module and cage shielding systems are required to minimize the opportunity for electromagnetic interference (EMI). Modules and cage shielding systems are used to minimize EMI by containing active circuits and contact systems within a substantially closed conductive module, which typically supports copper or fiber cable termination, a range of circuit containment (including amplification, retiming, selective filtering, EO / OE conversion and other similar functions). Circuits operating at these increased transmission speeds are considered to be very energetic and can generate EMI. Summary of the invention

[0006] An assembly includes a plug connector and a conductive cage. The plug connector includes a housing, a protrusion extending from the housing, and an insert card mounted in the housing. The cage includes a cage shell forming an interior region and at least one cap forming a keyway. The keyway is typically formed as a channel having three distinct side walls. The housing of the plug connector is received in the interior region of the cage and the protrusion of the plug connector is received in the keyway of the cage. The cage may include a plurality of resilient fingers thereon that engage a conductive frame. The cage provides EMI shielding for the plug connector.

[0007] According to one solution of the present application, a connector is provided, comprising: a cage shell having a top and a bottom and comprising a plurality of inner walls forming a first cabin and a second cabin, the first cabin being arranged above the second cabin, each cabin having a top wall, a bottom wall and a side wall connecting the top wall and the bottom wall together, the top wall, the bottom wall and the side wall forming an inner area extending from the butt end of the cage, and a first cap located on the top wall of the first cabin, the first cap comprising: a side wall extending upward from the top wall; and an upper wall at the top of the first cap At the end of the side wall and separated from the top wall, the side wall and the upper wall of the first cap form a key groove, the key groove is connected to the internal area, and the key groove extends from the docking end of the cage body; and a second cap is located on the bottom wall of the second cabin body, the second cap includes: a side wall, extending downward from the bottom wall; and a lower wall, at the end of the side wall of the second cap and separated from the bottom wall, the side wall and the lower wall of the second cap form a key groove, the key groove is connected to the internal area, and the key groove extends from the docking end of the cage body.

[0008] Wherein, the first cap is formed integrally with the cage shell.

[0009] Therein, the keyway is defined by a channel having three different flat side walls.

[0010] Wherein the butt end and the opposite end of the cage define a length of the cage, and wherein the first cap extends along a portion of the length of the cage.

[0011] The connector according to the present application further comprises a plurality of deformable elastic fingers extending from the top wall of the cage shell, deformable elastic fingers extending from each side wall of the first cap, and a deformable elastic finger extending from the upper wall of the first cap.

[0012] Wherein, each elastic finger is formed of elastic tempered material.

[0013] Wherein, a predetermined number of the elastic fingers on the top wall are connected together by a bridge portion.

[0014] Wherein, the elastic finger portion on the top wall and the elastic finger portion on the first cap are connected together through a bridging portion.

[0015] The elastic fingers and the bridge portion are formed independently from the cage body and are connected to the cage body through the bridge portion.

[0016] The connector according to the present application further comprises a plurality of deformable elastic fingers extending from the side wall and the bottom wall of the cage shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is illustrated by way of example and not limitation, in the accompanying drawings, in which like reference numerals indicate similar parts, and in which:

[0018] Figure 1 is a perspective view of an embodiment of a cage, the cage forming a portion of an input / output connector;

[0019] Figure 2 is a perspective view of an embodiment of a plug connector, the plug connector forming a portion of an input / output connector;

[0020] Figure 3 It is an exploded stereogram of the cage;

[0021] Figure 4 is a top view of the cage;

[0022] Figures 5 to 9 is a side view showing various shapes of a cap of the cage;

[0023] Fig.10 is a three-dimensional diagram of an embodiment of a frame, in which a cage is installed;

[0024] Fig.11 is a front view of the frame and cage;

[0025] Fig.12 is a perspective view of another embodiment of a frame, in which a cage of one embodiment is installed; and

[0026] Fig.13 yes Fig.12 A front view of the frame and cage is shown. DETAILED DESCRIPTION

[0027] The following detailed description describes exemplary embodiments and is not intended to be limited to these explicitly disclosed combinations.Thus, unless otherwise stated, the features disclosed herein may be combined together to form additional combinations that are not presented for the sake of brevity.

[0028] One embodiment of minimizing such electromagnetic radiation is an input / output connector that includes a conductive cage 20 into which a shielded module or plug connector 22 is inserted, wherein the shielded conductive plug connector 22 forms a primary electromagnetic containment and the cage 20 forms a conductive sleeve around the shielded plug connector 22. The cage 20 and plug connector 22 form a telescoping assembly that can receive a mating connector (not shown) toward the distal extent of the telescoping portion. In this manner, any exposed contacts can be substantially recessed into the telescoping structure. The maximum lateral gap formed between the shielded plug connector 22 and the surrounding conductive cage 20 creates a waveguide aperture that has an associated filtering capability when operating at a frequency below cutoff. When the telescoping portion is recessed by mounting the plug connector 22 within the conductive cage 20, the length is added to the lateral gap in the mounting direction. When operating at frequencies below cutoff, the waveguide length plus the limiting lateral gap together form an electromagnetic interference (EMI) filter. This creates enhanced high speed performance by maintaining the integrity of the plug connector containment and maintaining the formation of an effective waveguide filter established by the socketing action of the plug connector 22 within the conductive cage 20.

[0029] Traditional SFP+ cable solutions have been widely used as a connectivity solution for the digital world for many years. There is a need in the art to double or even multiple the number of channels to provide more connections with the same form factor of the traditional SFP. In this way, customers can leverage existing systems with existing form factors to reach new levels of capabilities. As the demand for greater bandwidth increases, the solution of SFP and sort is a double density (DD) solution that doubles the total bandwidth with the same form factor by adding multiple rows of channels to the existing traditional framework. It allows a traditional SFP+ module to work with an SFP-DD connector and cage 20.

[0030] like Figure 1 , Figure 3 as well as Figure 4As shown, the cage 20 includes a cage shell 26, the cage shell 26 having a top wall 28, side walls 30, 32 depending downward from the top wall 28, and a bottom wall 34 connected to the bottom ends of the side walls 30, 32. The walls 28, 30, 32, 34 form an interior area 36 accessible through a front opening 38, and the front opening 38 defines a butt end 42 at the front of the cage shell 26. A rear end 40 of the cage shell 26 is opposite to the front opening 38. The front opening 38 and the rear end 40 of the cage shell 26 define the length of the cage shell 26. The cage shell 26 can be placed on a printed circuit board (not shown). The cage body 20 can be formed by stamping.

[0031] like Figure 2 As shown, the plug connector 22 includes a housing 44 having a top wall 46, side walls 48, 50 depending downward from the top wall 46, and a bottom wall 52 connected to the bottom ends of the side walls 48, 50. The housing 44 defines a front surface 54 and an opposite rear surface 56. The rear surface 56 defines a cable entry 58. The housing 44 can be formed in various ways, such as but not limited to die casting, stamping, and / or machining. The housing 44 of the plug connector 22 is formed to be disposed within the interior area 36 of the cage shell 26 of the cage body 20 so that the plug connector 22 can be mated with a mating connector in the cage body 20. A paddle card 60 is disposed between the top wall 46 and the bottom wall 52 and can be offset toward the bottom wall 52. The paddle card 60 extends forward from the front surface 54. In a double density configuration, the paddle card 60 includes two rows of contact pads disposed adjacent to each other along a mating direction. One or more flanges may extend forwardly from the front surface 54 and can help provide protection for the inserted card 60 .

[0032] In one embodiment, the docking connector (not shown) includes a plurality of laminae arranged in a side-by-side arrangement and supported by an insulating frame. The frame of the docking connector is shaped to be disposed within the interior area 36 of the cage shell 26 of the cage 20 so that the plug connector 22 can mate with the docking connector within the cage 20. The plurality of laminae include two rows of terminals spaced apart in a mating direction, each terminal engaging a corresponding contact pad formed on the insertion card 60. Each row of terminals includes a contact portion that engages a contact pad on the top and bottom sides of the insertion card 60.

[0033] The cage 20 and the plug connector 22 include a keying system that ensures the correct orientation of the plug connector 22 when the plug connector 22 is inserted into the cage 20. The keying system includes at least one cap 64 formed integrally with the top wall 28 of the cage shell 26 of the cage 20, so that the cap 64 forms a part of the cage shell 26; and at least one raised protrusion 66 extending from the top wall 46 of the housing 44 of the plug connector 22 perpendicular to the mating direction of the plug connector 22 inserted into the cage 20.

[0034] The cap 64 extends upward from the top wall 28 of the housing 44 and forms a keyway 68 therein extending rearward from the butt end 42. The keyway 68 is generally formed as a channel having three different sides. The sides are preferably flat but curved sides are also contemplated. The keyway 68 opens to the interior area 36 so that the interior area 36 and the keyway 68 communicate with each other. The cap 64 is formed by a first side wall 70, a second side wall 72 spaced from the first side wall 70, an end wall 74 at the rear end of the side walls 70, 72, and an upper wall 76 at the upper end of the walls 70, 72, 74. The walls 70, 72, 74, 76 form the keyway 68 extending rearward from the butt end 42 of the housing 44. The first side wall 70 has a lower end connected to the top wall 28 and protrudes upward from the top wall 28 to an upper end. A front end of the first side wall 70 is at the butt end 42 of the housing 44 and a rear end is rearward of the front end. The second side wall 72 has a lower end connected to the top wall 28 and protrudes upward from the top wall 28 to an upper end. A front end of the second side wall 72 is at the docking end 42 of the housing 44 and a rear end is behind the front end. In one embodiment, these rear ends are aligned with each other. The end wall 74 has a lower end connected to the top wall 28 and protrudes upward from the top wall 28 to an upper end. The upper wall 76 extends between the upper ends of the walls 70, 72, 74, so that the upper wall 76 is spaced apart from the top wall 28. In one embodiment, each of the walls 70, 72, 74, 76 is flat.

[0035] As described herein, the cap 64 is integrally formed with the top wall 28, however, in one embodiment, the cap 64 is formed separately from the cage shell 26, and the top wall 28 has an elongated slot (not shown) formed therethrough, and the cap 64 is disposed on the elongated slot; the cap 64 is permanently attached to the top wall 28, such as by welding, so that the cap 64 is actually integral with the cage shell 26.

[0036] As previously mentioned, the cross-sectional shape of the keyway 68 when viewed from the butt end 42 is generally three-sided, but a variety of shapes may be employed. Figure 5 and Figure 6 As shown, the keyway 68 is a quadrilateral (such as a rectangle) when viewed from the butt end 42. Figure 5As shown, the top wall 28 and the upper wall 76 are parallel to each other and the side walls 70, 72 are perpendicular to the top wall 28 and the upper wall 76, so that the cross-sectional shape of the keyway 68 when viewed from the butt end 42 is rectangular. Figure 6 As shown, the top wall 28 and the upper wall 76 are parallel to each other and the side walls 70, 72 are inclined relative to the top wall 28 and the upper wall 76 and are inclined inwardly toward each other, so that when viewed from the butt end 42, the cross-sectional shape of the keyway 68 is a non-regular three-sided section. In this embodiment, the side walls are shown with the same inward inclination, but different combinations of inclinations and inclinations of the side walls are contemplated. In another example, only one side wall can be inclined while the other side wall is perpendicular to the top wall 28 and the upper wall 76. In one embodiment, as shown in FIG. Figure 7 As shown, the walls 70, 72, 76 can be arranged to form an arc when the cross-sectional shape of the keyway 68 is viewed from the butt end 42. In this case, the keyway 68 can be defined by a single wall. In one embodiment, as shown in FIG. Figure 8 As shown, the walls 70, 72, 76 can be arranged to form a "T" shape when the cross-sectional shape of the keyway 68 is viewed from the butt end 42. In one embodiment, as shown in FIG. Fig. 9 As shown, the walls 70, 72, 76 can be arranged to form an inverted "L" shape when the cross-sectional shape of the keyway 68 is viewed from the butt end 42. Although some shapes of the keyway 68 are described here, other shapes are also within the scope of the present invention. The channel portion defining the shape of the keyway 68 can be defined by multiple walls. For example, a triangular keyway is defined by two walls, and four or more walls can define cross-sections of various shapes.

[0037] In one embodiment, the cap 64 extends along a portion of the length of the cage 26 so that the end wall 74 is spaced from the rear end 40 of the cage 26. Figure 4 In one embodiment, the cap 64 extends along the entire length of the cage 26 so that the end wall 74 is at the rear end 40 of the cage 26 .

[0038] As shown in the figure, the cap 64 forming the keyway 68 is disposed transversely on one side of the midpoint of the top wall 28. The cap 64 may be disposed at the midpoint of the top wall 28, or may be disposed transversely on the other side of the midpoint of the top wall 28. In addition, a plurality of caps 64 each forming a keyway 68 may be disposed on the top wall 28. If a plurality of caps 64 each forming a keyway 68 are provided, the plurality of keyways 68 may have different cross-sectional shapes.

[0039] The protrusion 66 extends from the top wall 46 of the housing 44 of the plug connector 22 at a distance behind the front surface 54. The protrusion 66 has a shape corresponding to the key slot 68 into which the protrusion 66 is to be inserted, and is provided on the top wall 46 at a position corresponding to the key slot 68 into which the protrusion 66 is to be inserted. With this arrangement, the correct orientation of the plug connector 22 is maintained so that the plug connector 22 can be correctly connected to the mating connector. If more than one key slot 68 is provided, more than one protrusion 66 is provided, and the corresponding protrusion 66 corresponds in shape to the corresponding key slot 68.

[0040] The plug connector 22 is inserted into the cage 20 through the front opening 38. When the plug connector 22 is properly oriented for insertion into the cage 20, the protrusion 66 is aligned with the keyway 68 (or multiple protrusions 66 are aligned with multiple keyways 68, if provided). As the plug connector 22 is inserted into the interior area 36 of the cage 20, the protrusion 66 slides along the keyway 68. The keyway 68 provides a path for properly aligning the plug connector 22 with the cage 20 to ensure proper mating. The plug connector 22 is connected to the mating connector within the cage 20.

[0041] The protrusion 66 and keyway 68 provide a mistake-proof keying solution for incorrect insertion of an SFP-DD module into a conventional SFP+ cage 20 and connector which could damage the inserted customer system. In one aspect of the invention, the keying configuration allows conventional SFP modules to work with the SFP-DD connector and cage.

[0042] In one embodiment, the cage shell 26 further comprises: an upper frame gasket 78, which is attached to the top wall 28 and the cap 64 near the butt end 42 of the cage shell 26; a first side wall frame gasket 80, which is attached to the first side wall 30 near the butt end 42 of the cage shell 26; a second side wall frame gasket 82, which is attached to the second side wall 32 near the butt end 42 of the cage shell 26; and a lower frame gasket 84, which is attached to the bottom wall 34 near the butt end 42 of the cage shell 26.

[0043] The upper frame gasket 78 has a plurality of deflectable resilient fingers 86, 88, 90, 92, 94, 96, 98 that connect the front ends to each other at a bridge 100. The upper frame gasket 78 can be formed of a resilient tempered material. The bridge 100 is mounted to the cage shell 26 by suitable means (such as welding) near the butt end 42 of the cage shell 26. The resilient fingers 86, 88, 90, 98 are near the top wall 28 of the cage shell 26 and extend along a portion of the length of the top wall 28. The resilient finger 92 is near the first side wall 70 of the cap 64 and extends along a portion of the length of the first side wall 70, the resilient finger 94 is near the upper wall 76 of the cap 64 and extends along a portion of the length of the upper wall 76, and the resilient finger 96 is near the second side wall 72 of the cap 64 and extends along a portion of the length of the second side wall 72. Although four resilient fingers 86, 88, 90, 98 are shown on the top wall 28, this is merely an example and more or less than four resilient fingers may be provided. In addition, although three resilient fingers 86, 88, 90 are shown on one side of the cap 64 and one resilient finger 98 is shown on the other side of the cap 64, more or fewer resilient fingers may be provided on either side of the cap 64. In addition, more than one resilient finger 92, 94, 96 may be provided on each wall 70, 72, 74 of the cap 64.

[0044] Each of the side frame gaskets 80, 82 and the lower frame gasket 84 has a plurality of resilient fingers 102 that are deformable to connect the front ends to each other at a bridge 104. Each frame gasket 80, 82, 84 can be formed of a resilient tempered material. The bridge 104 is mounted to the cage shell 26 by suitable means (such as welding) close to its butt end 42. Each resilient finger 102 extends along a portion of the length of the corresponding wall 30, 32, 34. Although the side frame gaskets 80, 82 and the lower frame gasket 84 are shown as a single element, the side frame gaskets 80, 82 and the lower frame gasket 84 can be formed independently and attached to the cage shell 26.

[0045] As described herein, the cap 64 is integrally formed with the top wall 28, however, in one embodiment, the cap 64 is formed separately from the cage shell 26, and the top wall 28 has an elongated slot (not shown) formed therethrough, over which the cap 64 is disposed; the cap 64 is permanently attached to the top wall 28, such as by welding, so that the cap 64 is actually integral with the cage shell 26. In this embodiment, the resilient fingers 86, 88, 90, 98 disposed on the top wall 28 of the cage shell 26 can be integrally formed with the separately formed cap 64 and attached to the top wall 28 with the separately formed cap 64. Although the resilient fingers 92, 94, 96 on the cap 64 are described as being integrally formed with the resilient fingers 86, 88, 90, 98 disposed on the top wall 28, the resilient fingers 92, 94, 96 on the cap 64 may be formed independently of the resilient fingers 86, 88, 90, 98 disposed on the top wall 28 and independently attached to the cap 64.

[0046] In one embodiment, the spring fingers 86-98, 102 are each bent over an edge to form a 182 degree shaped edge. Although excess material is used in this approach, an advantage is gained by providing a lead-in for the protrusion 66 formed on the plug connector 22. In another construction, the spring fingers 86-98, 102 are formed as separate parts that are secured to the cage 26, typically by welding.

[0047] exist Fig.10 and Fig.11 In one embodiment shown, the cage 20 is mounted to a conductive frame 106. The frame 106 has an I / O port hole 108 that is similar in shape to the cage shell 26 of the cage 20 (mirror); and a notch 110 that is similar in shape to the cap 64. The notch 110 opens to the hole 108 so that the hole 108 and the notch 110 communicate with each other. To ensure a proper fit, a gap is maintained around the contour of the cap 64 and the periphery of the walls 28, 30, 32, 34 of the cage 20 to provide a gap between the cage 20 and the frame 106. The resilient fingers 86, 88, 90, 102 engage an edge of the hole 108 of the frame 106 and are compressed by the edge of the hole 108 of the frame 106 to provide additional sealing, while the resilient fingers 92, 94, 96 engage an edge of the notch 110 of the frame 106 and are compressed by the edge of the notch 110 of the frame 106 to provide additional sealing. The gap created by the notch 110 in the frame 106 is generally orthogonal to the direction of insertion of the cage 20 into the frame 106, thereby creating an effective seal between the cage 20 and the frame 106 when the resilient fingers 86-98, 102 are deformed.

[0048] exist Fig.12 and Fig.13In one embodiment shown, the cage 20 has a plurality of interior walls 116, 118 that divide the interior area 36 into a plurality of compartments 120 into which a plurality of plug connectors 22 may be inserted. As shown, the top wall 28 has a plurality of spaced apart caps 64 each forming a keyway 68 that opens into a corresponding compartment 120 and is associated with resilient fingers 86-98 on the top wall 28; and the bottom wall 34 has a plurality of spaced apart caps 64 each forming a keyway 68 that opens into a corresponding compartment 120 and is associated with resilient fingers 86-98 on the bottom wall 34. The caps 64 on the bottom wall 34 are formed identically to the caps 64 on the top wall 28, except that the side walls 70, 72 extend downwardly from the bottom wall 34 and the wall 76 forms a lower wall of each cap 64. The cage 20 is mounted to a conductive frame 122. The frame 122 has an I / O port hole 126 similar in shape to the cage shell 26 of the cage 20 and a plurality of notches 128 similar in shape to the respective caps 64. Each pod 120 is associated with a notch 128. To ensure a proper fit, a gap is maintained around the contour of the cap 64 and the perimeter of the walls 28, 30, 32, 34 of the cage 20, thereby providing a gap between the cage 20 and the frame 122. The resilient fingers 86, 88, 90, 102 engage an edge of the hole 126 of the frame 122 and are compressed by the edge of the hole 126 of the frame 122 to provide additional sealing, while the resilient fingers 92, 94, 96 engage an edge of the corresponding notch 128 of the frame 122 and are compressed by the edge of the corresponding notch 128 of the frame 122 to provide additional sealing. The gap created by the notch 128 in the frame 122 is generally orthogonal to the direction of insertion of the cage 20 into the frame 122, creating an effective seal between the cage 20 and the frame 122 when the resilient fingers 86-98, 102 are deformed. Typically, the capsules 120 are arranged in a belly-to-belly orientation in this arrangement, but can also be arranged in a stacked vertically aligned arrangement. Multiple rows can also be arranged longitudinally to create a linear array. In a sense, the arrangement follows an "MxN" orientation, where M is the number of stacked capsules 120, and N is the number of columns of stacked capsules 120. In a ganged arrangement, the frame gaskets 78, 80, 82, 84 provide EMI sealing for all capsules 120 in the longitudinal direction.

[0049] The conductive cage 20 provides a ground seal between the conductive frame 106, 120 and the plug connector 22. This provides a low impedance and low leakage seal that provides a ground path for the frame 106, 122 and seals the I / O port holes 108, 126 that allow the plug connector 22 to be inserted into the installed cage 20.

[0050] Additional EMI shielding is used around the openings that may not be completely sealed at the corners and edges. In these cases, a compliant material or elastomeric material formed with conductive properties can be placed in the leakage area. These second gaskets can include conductive foam materials, flexible silk braids, velvet buttons and conductive whiskers, etc. These second gaskets are usually compressed during the assembly of the cage 20 to the frame 106, 122, filling the gap or gap between the cage 20 and the frame 106, 122 and also filling the gap or gap between the elastic fingers 92, 94, 96 on the cage 20 and the cap 64 to further seal any gaps. It can also be considered that after the cage 20 and the frame 106, 122 are docked, a distributed conductive material (such as an air-curable expandable conductive material or foam material) can be applied in the gap. In all sealing structures, the material disposed in or near the gap between the cage 20 and the frame 106 , 122 must be resilient and remain resilient to prevent intermittent electrical connection due to vibration and wear during insertion or removal of the plug connector 22 from the cage 20 .

[0051] Including the keyway 68 with enhanced grounding features provided by the spring fingers and bezels 106 , 122 and a substantially continuous ground with the bezels 106 , 122 can maintain EMI containment as well as provide keyed identification of the plug connector 22 to the cage 20 .

[0052] The disclosure given herein illustrates various features in terms of its preferred and exemplary embodiments. After reading this disclosure, those skilled in the art will come to many other embodiments, modifications and variations within the scope and spirit of the appended claims.

Claims

1. A connector, comprising: A cage shell having a top and a bottom and including a plurality of inner walls forming a first chamber and a second chamber, wherein the first chamber is disposed above the second chamber, each chamber having a top wall, a bottom wall, and a side wall connecting the top wall and the bottom wall together, wherein the top wall, the bottom wall, and the side wall form an inner region extending from a butt end of the cage, and a first cap located on the top wall of the first housing, the first cap comprising: a side wall extending upward from the top wall; and an upper wall at the end of the side wall of the first cap and spaced apart from the top wall, the side wall of the first cap and the upper wall forming a keyway communicating with the interior area, the keyway extending from the butt end of the cage, wherein the first cap extends along a portion of the length of the cage shell, and the top wall has a midpoint, the first cap being transversely disposed on one side of the midpoint of the top wall; and A second cap is located on the bottom wall of the second cabin body, the second cap includes: a side wall extending downward from the bottom wall; and a lower wall at the end of the side wall of the second cap and spaced apart from the bottom wall, the side wall and the lower wall of the second cap form a keyway, the keyway is connected to the internal area, and the keyway extends from the butt end of the cage body, wherein the second cap extends along a portion of the length of the cage shell, and the top wall has a midpoint, and the second cap is transversely arranged on one side of the midpoint of the top wall.

2. The connector according to claim 1, wherein: The first cap is formed integrally with the cage shell.

3. The connector according to claim 1, wherein: The keyway is defined by a channel having three distinct flat side walls.

4. The connector according to claim 1, wherein: The butt end and the opposite end of the cage define a length of the cage.

5. The connector of claim 1 , further comprising a plurality of deformable elastic fingers extending from the top wall of the cage shell, deformable elastic fingers extending from each side wall of the first cap, and a deformable elastic finger extending from the upper wall of the first cap.

6. The connector according to claim 5, wherein: Each resilient finger is formed of a resilient tempered material.

7. The connector according to claim 5, wherein: A predetermined number of the resilient fingers on the top wall are connected together by a bridge portion.

8. The connector according to claim 5, wherein: The elastic finger portion on the top wall and the elastic finger portion on the first cap are connected together through a bridge portion.

9. The connector according to claim 8, wherein: The elastic fingers and the bridge portion are formed independently of the cage body and are connected to the cage body through the bridge portion.

10. The connector of claim 5, further comprising a plurality of deformable resilient fingers extending from the side walls and the bottom wall of the cage.

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