SWITCHING JACK Background of the Invention Field of the Invention The invention relates generally to a modular jack and in particular to a modular jack having a single opening for receiving a standard modular plug which, when inserted in the jack, disconnects conductive pins from a circuit board.
Prior Art Modular jack patching devices are known in the art as exhibited by U.S. Patent No. 5,074,801. Referring to FIGURE 1, the '801 patent describes a modular jack patching device having a pair of oppositely disposed openings 2 and 4 for receiving standard modular plugs. A circuit board 6 is clipped to the back side of the housing, as shown in FIGURE 2, for establishing an electrical connection between resilient conductive pins 8 positioned in the openings 2 and 4. Resilient conductive pins 8 normally establish an electrical connection with the circuit board 6. When a plug is inserted in the opening 2 or 4, the pins 8 are deflected away from the circuit board 6 and the electrical connection between the resilient conductive pins 8 and the circuit board 6 is broken. U.S. Patent 5,178,554 discloses a similar modular jack patching device.
Although the modular jack patching devices of U.S. Patent Nos. 5,074,801 and 5,178,554 are well suited for their intended purposes, there are difficulties using these modular jacks in a variety of applications. The size of the dual opening modular jack
makes it difficult to use the jack with existing systems. In addition, certain applications only require a single jack in which the dual opening modular jack of the prior art is unnecessary.
Summarv of the Invention: The above-discussed and other drawbacks and deficiencies of the prior art are overcome or alleviated by the switching jack of the present invention. The switching jack of the present invention includes a housing having a single opening for receiving a plug. Within the housing is a contact carrier which holds a plurality of resilient conductive pins. The resilient conductive pins extend angularly through an open area in the housing an extend out from the rear surface ofthejack. When the jack is mounted to a circuit board, the resilient conductive pins contact grooved contacts formed in the circuit board. When a plug is inserted in the jack, the electrical connections between the resilient conductive pins and the grooved contacts is interrupted. In an alternative embodiment, the housing includes an opening for receiving an icon.
The housing only has a single opening and thus has a smaller size than prior switching jacks. Accordingly, the switching jack of the present invention can be used in applications not suitable for the larger, dual-opening switching jacks.
The above-discussed and other features and advantages of the present invention will be appreciated and understood by those skilled in the art from the following detailed description and drawings.
Brief Description of the Drawings Referring now to the drawings wherein like elements are numbered alike in the several FIGURES: FIGURE 1 is a perspective view of the conventional dual opening modular jack; FIGURE 2 is an alternative perspective view of the conventional dual opening modular jack;
FIGURE 3 is an exploded view of the switching jack of the present invention and a circuit board; FIGURE 4 is an alternative exploded view of the switching jack of the present invention and a circuit board; FIGURE 5 is a rear view of the switching jack mounted to a circuit board; FIGURE 6 is a left side view of the switching jack mounted to a circuit board; FIGURE 7 is a top view of the switching jack mounted to a circuit board; FIGURE 8 is a cross sectional view taken along line 8-8 of FIGURE 7; FIGURE 9 is a cross sectional view taken along line 9-9 of FIGURE 7; FIGURE 10 is a top view of the switching jack; FIGURE 11 is a front view of the switching jack; FIGURE 12 is a right side view of the switching jack; FIGURE 13 is a perspective view of the switching jack with the rear side up; FIGURE 14 is a perspective view of the switching jack with the front side up; FIGURE 15 is a perspective view of the switching jack including an icon; FIGURE 16 is an exploded view of an alternative switching jack; FIGURE 17 is a perspective view of the switching jack of FIGURE 16; and FIGURE 18 is a perspective view of the switching jack of FIGURE 16.
Detailed Description of the Invention FIGURE 3 is an exploded view of the switching jack, made up of housing 10, resilient conductive pins 20 and a contact holder 30, and a circuit board 40. To assemble the switching jack, the conductive pins 20 are first mounted to the contact carrier 30. The rear section 302 of the contact carrier 30 includes a plurality of holes 304 and slots 306 shown in FIGURE 4. The rear section 302 forms the rear face of the switching jack when connected to the housing. A first end 202 of each of the conductive pins 20 extends through the holes 304 in the contact carrier 30. A second end 204 of each of the conductive pins 20 extends through the slots 306. A bottom section 308 of the contact carrier 30 includes a front lip having a plurality of notches
310 for receiving a portion of the conductive pins 20. The notches 310 keep the conductive pins 20 separated and maintain the proper separation between the individual conductive pins 20. Although eight conductive pins 20 are shown in FIGURE 3, it is understood that pin configurations such as two, four, six, and ten may be used in the switching jack.
Once the conductive pins 20 are mounted to the contact carrier 30, the housing 10 is then snapped on to the contact carrier 30. In an exemplary embodiment, both the contact carrier 30 and the housing 10 are made from a resilient plastic which allows the contact carrier 30 to be connected to the housing 10 without damage to the housing or contact carrier. A pair of tabs 312 formed on the periphery of the bottom section 308 of the contact carrier 30 engage a pair of slots 102 formed in side walls of the housing 10.
In addition, two fingers 314, having a recess 316, engage two ribs 104 formed on the inside of the side walls of the housing. The ribs 104 are positioned with the recesses 316. The interference fit between the ribs 104 and the recesses 316 and the tabs 312 and slots 102 connect the contact carrier 30 to the housing 10. The assembled housing 10, conductive pins 20 and contact carrier 30 forms the switching jack.
The switching jack is then mounted to a circuit board 40 to form a patching module for performing various operations depending on the specifics of the circuit board 40. The housing 10 includes a pair of tabs 106 having a neck 108 and a head 110 having a half conical shape. The neck 106 has an outer dimension that is smaller than the base of the head 110. The circuit board 40 includes holes 402 for receiving the tabs 106. The lip between the head 110 and the neck 108 engages the circuit board 40. The interference fit between the head 110 and the circuit board 40 connects the switching jack to the circuit board. The circuit board 40 includes holes 404 that receive the first end 202 of the conductive pins 20. An elongated aperture 406 is formed in the circuit board 40. Within the aperture 406 are contact grooves 408 that receive the second end 204 of the conductive pins. The first end 202 of the conductive pins 20 is permanently attached to the circuit board 40 by soldering. The contact between the second end 204 of the conductive pins 20 and the contact grooves 408 is broken when a plug is inserted
in an opening 112 formed in the housing 10. The opening 112 is substantially parallel to the surface of the contact carrier 30 that the first ends 202 extend through.
FIGURE 5 is a rear view of the switching jack mounted to the circuit board 40.
The second end 204 of the conductive pins 20 contact the grooved contacts 408 formed in the aperture 406. FIGURE 6 is a left side view of the switching jack connected to the circuit board 40. FIGURE 7 is top view of the switching jack connected to the circuit board 40. FIGURE 8 is a cross sectional view taken along line 8-8 in FIGURE 7.
FIGURE 9 is a cross sectional view taken along line 9-9 of FIGURE 7. As shown in FIGURES 8 and 9, the resilient conductive pins 20 extend angularly through an open area in the housing. When a plug is inserted in the opening 112 in housing 10, the second end 204 of the conductive pins 20 are flexed away from the contact grooves 408 in the aperture 406. When the plug is removed, the conductive pins 20 return to their original shape and the second ends 204 contact the groove contacts 408 in the aperture 406. FIGURE 10 is a top view of the switching jack. FIGURE 11 is a front view of the switching jack. FIGURE 12 is a right side view of the switching jack. FIGURES 13 and 14 are perspective views of the switching jack.
Due to its reduced size, the single opening switching jack can be used in applications where the dual opening switching jacks of the prior art cannot be used. In addition, category 5 compliant patching applications can be designed by using two vertical switching jacks and a specific printed circuit board.
FIGURE 15 is a perspective view of an alternative housing 10'. The alternative housing 10' includes a pocket 50 for receiving an icon 60 which may be used for color coding or keying the jack. The icon 60 includes a projection 62 that is aligned with a notch 52 formed in the periphery of the pocket 50. The interaction between the projection 62 and the notch 52 ensure that the icon 60 is placed in the pocket 50 in the proper orientation. The icon 60 also includes a pair of bumps 64 that engage recess 54 formed in the interior wall of the pocket 50. The interference fit between the bumps 64 and the recesses 54 prevent the icon 60 from becoming dislodged from the housing 10'.
FIGURE 16 is an exploded view of an alternative switching jack having an
alternative housing opening location. The alternative switching jack is made up of a housing 50, resilient conductive pins 60 and a contact carrier 70. To assemble the switching jack, the conductive pins 60 are first mounted to the contact carrier 70. The rear section 702 of the contact carrier 70 includes a plurality of slots 706 shown in FIGURE 16. The rear section 702 forms the rear face of the switching jack when connected to the housing. A plurality of openings 704 are formed in a bottom section 708. A first end 602 of each of the conductive pins 70 extends through the openings 704 in the contact carrier 70. A second end 604 of each of the conductive pins 60 extends through the slots 706. A bottom section 708 of the contact carrier 70 includes a front lip having a plurality of notches 710 for receiving a portion of the conductive pins 60. The notches 710 keep the conductive pins 60 separated and maintain the proper separation between the individual conductive pins 60. Although eight conductive pins 60 are shown in FIGURE 16, it is understood that pin configurations such as two, four, six, and ten may be used in the switching jack.
Once the conductive pins 60 are mounted to the contact carrier 70, the housing 50 is then snapped on to the contact carrier 70. In an exemplary embodiment, both the contact carrier 70 and the housing 50 are made from a resilient plastic which allows the contact carrier 70 to be connected to the housing 50 without damage to the housing or contact carrier. A pair of tabs 712 formed on the periphery of the bottom section 708 of the contact carrier 70 engage a pair of slots 502 formed in side walls of the housing 50.
In addition, two fingers 714, having a recess 716, engage two ribs 504 formed on the inside of the side walls of the housing 50. The ribs 504 are positioned with the recesses 716. The interference fit between the ribs 504 and the recesses 716 and the tabs 712 and slots 502 connect the contact carrier 70 to the housing 50. The assembled housing 50, conductive pins 60 and contact carrier 70 forms the switching jack.
The switching jack is then mounted to a circuit board 80 to form a patching module for performing various operations depending on the specifics of the circuit board 80. The circuit board 80 is a right angle circuit board or a flexible circuit board capable of contacting both ends of the conductive pins 60. The housing 50 includes a
pair of tabs 506 having a neck 508 and a head 510 having a half conical shape. The neck 506 has an outer dimension that is smaller than the base of the head 510. The circuit board 80 includes holes 802 for receiving the tabs 506. The lip between the head 510 and the neck 508 engages the circuit board 80. The interference fit between the head 510 and the circuit board 80 connects the switching jack to the circuit board.
The circuit board 80 includes holes 804 that receive the first end 602 of the conductive pins 60. The first end 602 of the conductive pins 60 is permanently attached to the circuit board 80 by soldering. An elongated aperture 806 is formed in the circuit board 80. Within the aperture 806 are contact grooves 808 that receive the second end 604 of the conductive pins. The contact between the second end 604 of the conductive pins 60 and the contact grooves 808 is broken when a plug is inserted in an opening 512 formed in the housing 50. The opening 512 is substantially perpendicular to the surface of the contact carrier 70 that the first ends 602 extend through.
FIGURES 17 and 18 are perspective views of the alternative switching jack. As described above with reference to FIGURES 8 and 9, the resilient conductive pins 60 extend angularly through an open area in the housing 50. When a plug is inserted in the housing 50, the plug presses against the resilient conductive pins 60 and forces the second end 604 out of contact with the contact grooves 808 formed in circuit board 80.
The single opening switching jack of the present invention provides advantages over the prior art. The compact size of the single opening switching jack allows it to be used in applications where larger, dual-opening switching jacks cannot be used. In addition, the inclusion of an icon holder in the switching jack housing provides for color coding or keying of individual switching jacks.
While preferred embodiments have been shown and described, various modifications and substitutions may be made thereto without departing from the spirit and scope of the invention. Accordingly, it is to be understood that the present invention has been described by way of illustration and not limitation.
What is claimed is:
