US20020072256A1 - Input/output device having removable module - Google Patents
Input/output device having removable module Download PDFInfo
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- US20020072256A1 US20020072256A1 US09/550,037 US55003700A US2002072256A1 US 20020072256 A1 US20020072256 A1 US 20020072256A1 US 55003700 A US55003700 A US 55003700A US 2002072256 A1 US2002072256 A1 US 2002072256A1
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- United States
- Prior art keywords
- circuit board
- input
- housing
- terminals
- power
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1462—Mounting supporting structure in casing or on frame or rack for programmable logic controllers [PLC] for automation or industrial process control
- H05K7/1468—Mechanical features of input/output (I/O) modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
- H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component
- H01R9/2658—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component with built-in data-bus connection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
- H05K7/1439—Back panel mother boards
- H05K7/1441—Back panel mother boards with a segmented structure
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1462—Mounting supporting structure in casing or on frame or rack for programmable logic controllers [PLC] for automation or industrial process control
- H05K7/1475—Bus assemblies for establishing communication between PLC modules
- H05K7/1478—Bus assemblies for establishing communication between PLC modules including a segmented bus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S439/00—Electrical connectors
- Y10S439/928—Modular electrically interengaging parts, e.g. stove with replaceable heating elements formed on coupling parts
Definitions
- This invention is related to input/output devices and more particularly to electrical terminals that are used to interconnect adjacent modules in an input/output device.
- U.S. Pat. No. 5,775,955 discloses one such arrangement in which each module has plug-compatible male and female connectors that are electrically engaged by sliding a loose module along a rail and into engagement with modules that are fixed to the rail.
- To repair or replace a selected module in the stacked arrangement it is necessary to slide and remove all the modules to one side of the selected module from the rail before the selected module can be removed, repaired or replaced. The whole process is then repeated to remount all the modules. This process can cause excessive wear on components that may engage the rail as well as take time. It is desirable, therefore, to have a module that can be removed and remounted to a rail without disturbing the other modules on the rail.
- U.S. Pat. No. 4,956,747 discloses modules having base portions with spring contacts extending from one side to the other of each base portion.
- the forces generated by the spring contacts as they are compressed by engagement with terminals in adjacent modules act in a direction parallel to the rail and in a direction to push the modules apart, thus requiring the use of interlocking housing portions or the like to assure the modules remain together. Additionally, as more modules are added, the amount of force builds up. It is desirable, therefore, to have terminals that interconnect adjacent modules in which the forces are “self-contained”, that is do not act to push the modules apart and do not build up as the number of modules on the rail are increased.
- U.S. Pat. No. 5,719,241 discloses modules that can be mounted to the rail in a direction orthogonal to the rail.
- the modules use flat bar-like power bridging members and terminals having resilient spring arms for interconnecting adjacent modules.
- the present invention is directed to an electrical terminal usable in input/output modules mounted to rails that overcomes problems associated with the prior art.
- the terminal is suitable for use as both a power and/or a data terminal in such a module.
- the terminal will be shown as a power terminal in an input/output module. It is to be understood that the terminal is not limited to use in such a module.
- the electrical terminal for interconnecting electronic modules in a stacked arrangement includes a U-shaped body having first, second and third connecting portions.
- the body has a base and opposed legs extending to free ends adapted to be electrically connected to circuits of a circuit board and defining the first connecting portion.
- a blade contact extends outwardly from one of the legs intermediate the base and free end and in a direction substantially perpendicular to the first connecting portion.
- the blade contact defines the second connecting portion.
- a receptacle contact extends outwardly from at least one of the legs intermediate the base and free end and in a direction substantially perpendicular to the first connecting portion and opposite to that of the blade contact.
- the receptacle contact defines the third connecting portion.
- the second and third connecting sections are available for being mated with complementary connecting portions of adjacent modules in a stacked arrangement.
- the receptacle contact is a pair of spring arms, with one arm extending from each of the legs of the U-shaped body.
- the leading end of the blade contact is offset from the leg such that the blade contact is in alignment with the space between the spring arms such that the terminal is hermaphroditic.
- the invention is also directed to an electronic module having at least one of the above terminals disposed therein.
- FIG. 1 is an isometric partially exploded view of an electronic system using the modular connector assembly of the present invention and illustrating two complementary mating connectors for one of the modules.
- FIG. 2 is an isometric exploded view of one of the connector assembly modules of FIG. 1.
- FIG. 3 is an isometric view of an electrical terminal used in the assembly of FIG. 1.
- FIG. 4 is an isometric view illustrating the position of a plurality of the terminals in the assembly with the circuit board being removed for purposes of illustration.
- FIG. 5 is an isometric view of a fragmentary portion of the module illustrating the position of the power and data terminals along one side of the module.
- FIG. 6 is a view similar to that of FIG. 5 illustrating the position of the power and data terminals along the other side of the module.
- FIG. 7 is an isometric view of two modules that are being electrically connected together in a stacked arrangement.
- FIG. 8 is a plan sectional view of a fragmentary portion of a plurality of connectors illustrating the mated power and data terminals.
- FIG. 9 is an isometric view of a pair of alternate connector assembly modules in which one of the modules is shown in exploded form.
- FIG. 10 is an isometric exploded view illustrating the alternate terminals of FIG. 9.
- FIG. 1 two modules, each identified as a connector assembly 10 of the present invention, are shown mounted to a rail 170 of an electronic device.
- a third connector assembly 10 is shown exploded from the rail 170 .
- Two complementary mating connectors 160 , 161 are exploded from the third assembly 10 .
- connector assembly 10 includes a lower housing 12 having a plurality of terminals 40 , 60 and 70 disposed therein; an upper housing 120 securable to the lower housing 12 and having a plurality of terminals 114 , 116 disposed therein and a circuit board 102 disposed between and within the housings 12 , 120 .
- Lower housing 12 has a rail mounting face 14 including a rail engaging recess 17 , an assembly face 20 , end walls 21 , and side walls 22 having latch arms 24 extending upwardly therefrom and adapted to engage cooperating latch surfaces 136 on upper housing 120 .
- End walls 21 and side walls 22 and assembly face 20 together define a circuit board receiving cavity 25 adapted to receive circuit board 102 therein.
- Housing 12 includes power terminal receiving passageways 26 , data contact receiving cavities 30 , 32 and ground terminal receiving cavity 36 for receiving respective power terminals 40 , data terminal portions 62 , 65 , and ground terminal 70 .
- Lower housing 12 further includes a pair of spring loaded rail engaging clamps 80 mounted to rail mounting face 14 . Clamps 80 cooperate with springs 90 to hold connector assembly 10 on the rail 170 , assembly 10 being released from the rail 170 by turning an actuator having lower portion 92 and upper portion 98 . Further details about the operation of the rail engaging clamps are found in co-pending U.S.
- Upper housing 120 has a mating face 122 , an assembly face 128 and opposed side walls 132 having latch surfaces 136 adapted to receive latch arms 24 to hold the two housings 12 , 120 together. Housing 120 further includes terminal receiving cavities 138 and 139 for receiving respective terminals 114 and 116 therein. Upper housing 120 further includes the upper portion 98 of the actuator and a programmable key-receiving member 140 that cooperates with a key protrusion (not shown) on mating housing 160 . Further details about the operation of the key-receiving member are found in co-pending U.S.
- power terminals 40 are adapted to be mounted to one side of circuit board 102 and terminals 114 and 116 are adapted to be mounted to the other side of circuit board 102 .
- the terminals may be mounted using complaint sections or solder tails that are received in apertures of board 102 to be electrically connected to circuits of the board. It is to be understood that the terminals may also be surface mounted to board 102 by means known in the art.
- each power or bus terminal 40 includes a U-shaped body 42 having a base 44 and opposed legs 46 extending to free ends 48 having compliant sections therein for electrically and mechanically engaging respective apertures 104 in circuit board 102 , shown in FIG. 2.
- Terminal 40 includes a blade contact 50 extending transversely outwardly in one direction from one of the legs 46 and an arm 52 extending transversely outwardly in the opposite direction from each leg 46 and defining a blade-receiving contact section 54 therebetween, as best seen in FIG. 3.
- FIG. 4 illustrates the position of the power terminals 40 with respect to assembly face 128 of upper housing 120 . For purposes of clarity, circuit board 102 is not shown between terminals 40 and assembly face 128 .
- Blade 50 has been configured to be aligned with a center axis of terminal 40 that extends between arms 52 and legs 46 and along the leading end of blade 50 .
- Terminal 40 is, therefore, hermaphroditic.
- the blade contacts 50 extend outwardly from the side wall 22 and the leading ends of arms 52 are recessed within respective passageways 26 , as best seen in FIGS. 5 and 6.
- Data terminals 60 can be made substantially in the same manner as power terminals 40 with blade contact 62 and arms 65 .
- the data terminals 60 are formed as two separate sections with blade contacts 62 including a pair of compliant board mounting sections 63 (shown in FIG. 2) and arms 65 extending from a U-shaped body 66 having compliant board mounting sections 67 .
- the two sections are connected electrically through the circuit board 102 .
- the blade contacts 62 Upon positioning data terminals 60 within their respective cavities 30 , 32 , the blade contacts 62 extend outwardly from the side wall 22 and the leading ends of arms 65 are recessed from the wall surface, as seen in FIGS. 5 and 6.
- Data terminals 60 are also shown in FIG. 4.
- one method of assembling connector assembly module 10 is to first dispose terminals 114 and 116 in respective cavities 138 , 139 of upper housing 120 .
- a circuit board subassembly can then be assembled by mounting the ground terminal 70 , power terminals 40 and data terminals 60 in respective apertures 107 , 104 , 105 and 106 on the under side of circuit board 102 .
- the upper side of the circuit board subassembly can then be disposed on the board mounting sections of terminals 114 and 116 .
- the lower housing 12 having springs 90 , rail engaging clamps 80 and lower actuator portion 92 disposed therein can then be secured to the upper housing and board subassembly.
- In the assembled connector lower actuator portion 92 extends through opening 108 of circuit board 102 and into the upper housing 120 .
- the upper actuator portion 98 and the key receiving member 140 are inserted into respective apertures in the upper housing 132 .
- FIG. 6 shows that the leading ends of the respective arms 52 , 65 are recessed from the surface of side wall 22 and are in communication with cooperating slots 35 , 135 and 34 , 134 in lower and upper housings 12 , 120 .
- FIG. 7 illustrates a sectional view of the connector assembly 10 showing the terminals 40 , 60 in lower housings 12 of three interconnected modules and the electrical engagement therebetween.
- the present invention provides an electrical terminal that enables vertical assembly of the modules being stacked as well as enables easy replacement of designated modules.
- the terminal provides reliable electrical interconnection between the stacked modules.
- the forces generated by the mated spring arms and blades are “self contained” within the module. The forces are generated in a direction that is perpendicular to the longitudinal axis of the rail and, therefore, do not act to move the adjacent modules apart. Additionally the forces are generated perpendicular to the direction of mounting the modules to the rail and mating the corresponding contacts and, therefore, do not react to push the modules from the rail.
- the design of the terminal is suitable for carrying power and/or signals, the size of the terminal and the kind and thickness of metal stock being selected in accordance with the desired current carrying capability as known in the art.
- the terminal furthermore, is hermaphroditic, thereby eliminating the need to manufacture different terminals for each side of the module.
- the terminal facilitates both adding and removing of modules from an electronic device, because the remaining modules can remain in place when one module is removed for repair or replacement.
- power terminals 40 comprise spring contacts 200
- data terminals 60 comprise similar spring contacts 202 .
- spring contacts 200 and 202 rely on laterally biased spring characteristics of each terminal to maintain appropriate contact with the corresponding terminal of a next adjacent module.
- each assembly includes a terminal housing portion 204 with spring contacts 200 , 202 and a removable complimentary mating input/output module or magazine 160 .
- the assemblies can be positioned adjacent one another, as described with reference to FIG. 1, so that the spring bias of spring contacts 200 and 202 maintain an electrical connection between corresponding power terminals and data terminals of the connector assemblies.
- spring contacts 200 and 202 are connected to printed circuit board 102 that is housed within a circuit board cavity 203 defined by side walls of housing 204 .
- Power terminal spring contacts 200 each include a pair of laterally biased portions 208 that extend laterally outward from terminal housing 204 .
- terminal housing 204 may include corresponding passageways or openings 210 through which lateral portions 208 extend when printed circuit board 102 is assembled into housing 204 .
- data terminal spring contacts 202 are electrically connected to printed circuit board 102 and include laterally extending contact portions 212 .
- Portions 212 also are designed to extend laterally from housing 204 .
- housing 204 may include corresponding passageways or openings 214 through which laterally extending portions 212 extend.
- the input/output module 160 of FIGS. 9 and 10 includes a card-edge 205 for removable electrical connection with a card-edge connector or module connector 207 of conventional design.
- the module 160 can be inserted and removed in a vertical direction indicated by arrow 209 .
- the module connector 207 is electrically connected to the circuit board 102 and provides a similar function to that performed by terminals 114 of FIG. 2.
- the spring bias of portions 208 and 212 ensure appropriate electrical contact between corresponding power terminals as well as corresponding data terminals. For example, when adjacent connector assemblies are mounted along a DIN rail 170 , electrical connection is maintained by the abutting terminals.
- the spring contacts provide an alternative terminal to the insertable, hermaphroditic terminals described in the embodiment illustrated in FIGS. 1 - 8 .
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Automation & Control Theory (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
- This invention is related to input/output devices and more particularly to electrical terminals that are used to interconnect adjacent modules in an input/output device.
- It is well known in the art to use a plurality of electronic input/output modules that fit together in a stacked arrangement and are electrically connected together. It is also known that the modules may be mounted to a U-shaped metal rail that supports the device and provides electrical connection to ground.
- U.S. Pat. No. 5,775,955 discloses one such arrangement in which each module has plug-compatible male and female connectors that are electrically engaged by sliding a loose module along a rail and into engagement with modules that are fixed to the rail. To repair or replace a selected module in the stacked arrangement, it is necessary to slide and remove all the modules to one side of the selected module from the rail before the selected module can be removed, repaired or replaced. The whole process is then repeated to remount all the modules. This process can cause excessive wear on components that may engage the rail as well as take time. It is desirable, therefore, to have a module that can be removed and remounted to a rail without disturbing the other modules on the rail.
- U.S. Pat. No. 4,956,747 discloses modules having base portions with spring contacts extending from one side to the other of each base portion. The forces generated by the spring contacts as they are compressed by engagement with terminals in adjacent modules act in a direction parallel to the rail and in a direction to push the modules apart, thus requiring the use of interlocking housing portions or the like to assure the modules remain together. Additionally, as more modules are added, the amount of force builds up. It is desirable, therefore, to have terminals that interconnect adjacent modules in which the forces are “self-contained”, that is do not act to push the modules apart and do not build up as the number of modules on the rail are increased.
- U.S. Pat. No. 5,719,241 discloses modules that can be mounted to the rail in a direction orthogonal to the rail. The modules use flat bar-like power bridging members and terminals having resilient spring arms for interconnecting adjacent modules.
- The present invention is directed to an electrical terminal usable in input/output modules mounted to rails that overcomes problems associated with the prior art. The terminal is suitable for use as both a power and/or a data terminal in such a module. For purposes of illustration, the terminal will be shown as a power terminal in an input/output module. It is to be understood that the terminal is not limited to use in such a module.
- The electrical terminal for interconnecting electronic modules in a stacked arrangement includes a U-shaped body having first, second and third connecting portions. The body has a base and opposed legs extending to free ends adapted to be electrically connected to circuits of a circuit board and defining the first connecting portion. A blade contact extends outwardly from one of the legs intermediate the base and free end and in a direction substantially perpendicular to the first connecting portion. The blade contact defines the second connecting portion. A receptacle contact extends outwardly from at least one of the legs intermediate the base and free end and in a direction substantially perpendicular to the first connecting portion and opposite to that of the blade contact. The receptacle contact defines the third connecting portion. Upon disposing the terminal in a terminal receiving passageway of a module with the first connecting portion electrically engaged to a circuit board therein and the second and third connecting portions being proximate openings in the passageway on opposite sides of the module, the second and third connecting sections are available for being mated with complementary connecting portions of adjacent modules in a stacked arrangement.
- In the embodiment shown, the receptacle contact is a pair of spring arms, with one arm extending from each of the legs of the U-shaped body. The leading end of the blade contact is offset from the leg such that the blade contact is in alignment with the space between the spring arms such that the terminal is hermaphroditic.
- The invention is also directed to an electronic module having at least one of the above terminals disposed therein.
- An embodiment of the invention will now be described by way of example with reference to the accompanying drawings.
- FIG. 1 is an isometric partially exploded view of an electronic system using the modular connector assembly of the present invention and illustrating two complementary mating connectors for one of the modules.
- FIG. 2 is an isometric exploded view of one of the connector assembly modules of FIG. 1.
- FIG. 3 is an isometric view of an electrical terminal used in the assembly of FIG. 1.
- FIG. 4 is an isometric view illustrating the position of a plurality of the terminals in the assembly with the circuit board being removed for purposes of illustration.
- FIG. 5 is an isometric view of a fragmentary portion of the module illustrating the position of the power and data terminals along one side of the module.
- FIG. 6 is a view similar to that of FIG. 5 illustrating the position of the power and data terminals along the other side of the module.
- FIG. 7 is an isometric view of two modules that are being electrically connected together in a stacked arrangement.
- FIG. 8 is a plan sectional view of a fragmentary portion of a plurality of connectors illustrating the mated power and data terminals.
- FIG. 9 is an isometric view of a pair of alternate connector assembly modules in which one of the modules is shown in exploded form.
- FIG. 10 is an isometric exploded view illustrating the alternate terminals of FIG. 9.
- In FIG. 1 two modules, each identified as a
connector assembly 10 of the present invention, are shown mounted to arail 170 of an electronic device. Athird connector assembly 10 is shown exploded from therail 170. Twocomplementary mating connectors third assembly 10. - Referring now, to FIGS. 1 and 2,
connector assembly 10 includes alower housing 12 having a plurality ofterminals upper housing 120 securable to thelower housing 12 and having a plurality ofterminals 114, 116 disposed therein and acircuit board 102 disposed between and within thehousings Lower housing 12 has arail mounting face 14 including a railengaging recess 17, anassembly face 20,end walls 21, andside walls 22 havinglatch arms 24 extending upwardly therefrom and adapted to engage cooperatinglatch surfaces 136 onupper housing 120.End walls 21 andside walls 22 andassembly face 20 together define a circuitboard receiving cavity 25 adapted to receivecircuit board 102 therein.Housing 12 includes powerterminal receiving passageways 26, datacontact receiving cavities terminal receiving cavity 36 for receivingrespective power terminals 40,data terminal portions ground terminal 70.Lower housing 12 further includes a pair of spring loadedrail engaging clamps 80 mounted torail mounting face 14.Clamps 80 cooperate withsprings 90 to holdconnector assembly 10 on therail 170,assembly 10 being released from therail 170 by turning an actuator havinglower portion 92 andupper portion 98. Further details about the operation of the rail engaging clamps are found in co-pending U.S. patent application Ser. No. (Attorney's Docket 17743L) filed concomitantly herewith and incorporated by reference herein. -
Upper housing 120 has amating face 122, anassembly face 128 and opposedside walls 132 havinglatch surfaces 136 adapted to receivelatch arms 24 to hold the twohousings Housing 120 further includesterminal receiving cavities respective terminals 114 and 116 therein.Upper housing 120 further includes theupper portion 98 of the actuator and a programmable key-receivingmember 140 that cooperates with a key protrusion (not shown) onmating housing 160. Further details about the operation of the key-receiving member are found in co-pending U.S. patent application Ser. No. (Attorney's Docket 17744L) filed concomitantly herewith and incorporated by reference herein. - As can best be seen in FIG. 2,
power terminals 40,data terminals 60 includingblade sections 62 andcompliant arm sections 65, andground terminal 70 are adapted to be mounted to one side ofcircuit board 102 andterminals 114 and 116 are adapted to be mounted to the other side ofcircuit board 102. The terminals may be mounted using complaint sections or solder tails that are received in apertures ofboard 102 to be electrically connected to circuits of the board. It is to be understood that the terminals may also be surface mounted to board 102 by means known in the art. - Referring now to FIGS. 3 through 6, each power or
bus terminal 40 includes aU-shaped body 42 having a base 44 andopposed legs 46 extending to free ends 48 having compliant sections therein for electrically and mechanically engaging respective apertures 104 incircuit board 102, shown in FIG. 2.Terminal 40 includes ablade contact 50 extending transversely outwardly in one direction from one of thelegs 46 and anarm 52 extending transversely outwardly in the opposite direction from eachleg 46 and defining a blade-receivingcontact section 54 therebetween, as best seen in FIG. 3. FIG. 4 illustrates the position of thepower terminals 40 with respect toassembly face 128 ofupper housing 120. For purposes of clarity,circuit board 102 is not shown betweenterminals 40 andassembly face 128. This Figure also illustrates thatblade 50 has been configured to be aligned with a center axis of terminal 40 that extends betweenarms 52 andlegs 46 and along the leading end ofblade 50.Terminal 40 is, therefore, hermaphroditic. Upon positioningpower terminals 40 within theirrespective passageways 26, theblade contacts 50 extend outwardly from theside wall 22 and the leading ends ofarms 52 are recessed withinrespective passageways 26, as best seen in FIGS. 5 and 6. -
Data terminals 60 can be made substantially in the same manner aspower terminals 40 withblade contact 62 andarms 65. In the embodiment shown, however, thedata terminals 60 are formed as two separate sections withblade contacts 62 including a pair of compliant board mounting sections 63 (shown in FIG. 2) andarms 65 extending from aU-shaped body 66 having compliantboard mounting sections 67. The two sections are connected electrically through thecircuit board 102. Upon positioningdata terminals 60 within theirrespective cavities blade contacts 62 extend outwardly from theside wall 22 and the leading ends ofarms 65 are recessed from the wall surface, as seen in FIGS. 5 and 6.Data terminals 60 are also shown in FIG. 4. - Referring again to FIG. 2, one method of assembling
connector assembly module 10 is to first disposeterminals 114 and 116 inrespective cavities upper housing 120. A circuit board subassembly can then be assembled by mounting theground terminal 70,power terminals 40 anddata terminals 60 inrespective apertures circuit board 102. The upper side of the circuit board subassembly can then be disposed on the board mounting sections ofterminals 114 and 116. Thelower housing 12 havingsprings 90,rail engaging clamps 80 andlower actuator portion 92 disposed therein can then be secured to the upper housing and board subassembly. In the assembled connectorlower actuator portion 92 extends through opening 108 ofcircuit board 102 and into theupper housing 120. Lastly, theupper actuator portion 98 and thekey receiving member 140 are inserted into respective apertures in theupper housing 132. - FIGS. 6 through 8 illustrate how
adjacent connector assemblies 10 are stacked and the respective power anddata terminals respective arms side wall 22 and are in communication with cooperatingslots upper housings modules 10 are brought into engagement, as shown in FIG. 7, therespective blade contacts slots upper housing 120 and are moved into engagement between respectivearm contact sections modules 10 are moved together in a vertical direction with respect to therail 170, shown in FIG. 1. FIG. 8 illustrates a sectional view of theconnector assembly 10 showing theterminals lower housings 12 of three interconnected modules and the electrical engagement therebetween. - The present invention provides an electrical terminal that enables vertical assembly of the modules being stacked as well as enables easy replacement of designated modules. The terminal provides reliable electrical interconnection between the stacked modules. The forces generated by the mated spring arms and blades are “self contained” within the module. The forces are generated in a direction that is perpendicular to the longitudinal axis of the rail and, therefore, do not act to move the adjacent modules apart. Additionally the forces are generated perpendicular to the direction of mounting the modules to the rail and mating the corresponding contacts and, therefore, do not react to push the modules from the rail. The design of the terminal is suitable for carrying power and/or signals, the size of the terminal and the kind and thickness of metal stock being selected in accordance with the desired current carrying capability as known in the art. The terminal, furthermore, is hermaphroditic, thereby eliminating the need to manufacture different terminals for each side of the module. The terminal facilitates both adding and removing of modules from an electronic device, because the remaining modules can remain in place when one module is removed for repair or replacement.
- In FIGS. 9 and 10, an alternate embodiment of
power terminals 40 anddata terminals 60 is illustrated. In this embodiment,power terminals 40 comprisespring contacts 200, anddata terminals 60 comprisesimilar spring contacts 202. Unlike the hermaphroditic terminals described above,spring contacts - In FIG. 9, two modular connector assemblies are illustrated. Each assembly includes a
terminal housing portion 204 withspring contacts magazine 160. The assemblies can be positioned adjacent one another, as described with reference to FIG. 1, so that the spring bias ofspring contacts - Referring generally to FIG. 10, one exemplary embodiment of
spring contacts spring contact circuit board 102 that is housed within acircuit board cavity 203 defined by side walls ofhousing 204. Powerterminal spring contacts 200 each include a pair of laterally biasedportions 208 that extend laterally outward fromterminal housing 204. For example,terminal housing 204 may include corresponding passageways oropenings 210 through whichlateral portions 208 extend when printedcircuit board 102 is assembled intohousing 204. - Similarly, data
terminal spring contacts 202 are electrically connected to printedcircuit board 102 and include laterally extendingcontact portions 212.Portions 212 also are designed to extend laterally fromhousing 204. For example,housing 204 may include corresponding passageways oropenings 214 through which laterally extendingportions 212 extend. - Similar to FIG. 1, the input/
output module 160 of FIGS. 9 and 10 includes a card-edge 205 for removable electrical connection with a card-edge connector ormodule connector 207 of conventional design. Themodule 160 can be inserted and removed in a vertical direction indicated byarrow 209. Themodule connector 207 is electrically connected to thecircuit board 102 and provides a similar function to that performed byterminals 114 of FIG. 2. - The spring bias of
portions DIN rail 170, electrical connection is maintained by the abutting terminals. The spring contacts provide an alternative terminal to the insertable, hermaphroditic terminals described in the embodiment illustrated in FIGS. 1-8. - It is thought that the electrical terminal of the present invention and many of its attendant advantages will be understood from the foregoing description. It is apparent that various changes may be made in the form, construction, and arrangement of parts thereof without departing from the spirit or scope of the invention, or sacrificing all of its material advantages.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/550,037 US6425770B1 (en) | 2000-04-14 | 2000-04-14 | Input/output device having removable module |
US10/194,840 US6767223B2 (en) | 2000-04-14 | 2002-07-12 | Input/output device having removable module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/194,840 Continuation US6767223B2 (en) | 2000-04-14 | 2002-07-12 | Input/output device having removable module |
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US10/194,840 Expired - Lifetime US6767223B2 (en) | 2000-04-14 | 2002-07-12 | Input/output device having removable module |
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Also Published As
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US6767223B2 (en) | 2004-07-27 |
US20020182902A1 (en) | 2002-12-05 |
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