Method of manufacturing cable connector hand tools
10950999 ยท 2021-03-16
Assignee
Inventors
Cpc classification
Y10T29/49194
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
Y10T29/49
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
B25B13/481
PERFORMING OPERATIONS; TRANSPORTING
B25B13/50
PERFORMING OPERATIONS; TRANSPORTING
H01R43/26
ELECTRICITY
Y10T29/4978
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
International classification
H01R43/00
ELECTRICITY
H01R43/26
ELECTRICITY
B25B13/50
PERFORMING OPERATIONS; TRANSPORTING
B25B23/00
PERFORMING OPERATIONS; TRANSPORTING
H01R13/639
ELECTRICITY
Abstract
An illustrative cable connector hand tool and associated method are operable to permit cable connection sections to respectively pass through a side opening of hand tool members into a center aperture of the tool members. In one illustrative embodiment, the hand tool members are formed with a recessed portion adapted to receive an end of one of a pair of cable connectors such that mating edges of the cable connectors used to couple the cable connection sections are visible when the cable connectors are in a coupled configuration abutting each other. An illustrative embodiment includes the recessed portion formed with a plurality of keyway indentions or recesses spaced apart in the center aperture that are operable to engage keys, protrusions, or lugs on an outer wall of the cable connectors.
Claims
1. A method of manufacturing a hand tool for coupling together first and second cable sections, the method including the steps of: determining a clearance measurement in a confined space receiving a cable connector assembly adapted to couple together mating cable sections including a plug and a socket; wherein the cable connector assembly includes first and second cable connecting nuts, each of the cable connecting nuts formed with keys extending radially outwardly from an outer surface of the of the cable connecting nuts and including a threaded connecting portion, the threaded connecting portions of the first and second cable connecting nuts threadably engaging each other to couple together the plug and the socket of the mating cable sections by compressive force applied to the mating cable sections; wherein the first and second cable connecting nuts are adapted to abut each other at mating surfaces when fully threadably engaged with each other; wherein the cable connector assembly is located in the confined space such that the space does not permit use of a wrench with a handle for 360 degree rotation of the first and second cable connecting nuts; and determining, based on the clearance measurement, a maximum outer dimensional envelope for first and second hand tool members adapted to engage with the keys on the first and second cable connecting nuts and permit visibility of the mating surfaces of the first and second cable connecting nuts between the first and second hand tool members.
2. The method of claim 1, further comprising the steps of determining a predetermined amount of torque on the first and second hand tool members required to rotatably couple the first and second cable connecting nuts so as to fully engage the plug and the socket of the mating cable sections, and then determining a minimum dimensional envelope of the first and second hand tool members based on the predetermined torque and a predetermined injury force associated with a shape of the first and second hand tool members based on a force that causes an abrasive or force application injury to an operator's hand using the hand tool a first plurality of times.
3. The method of claim 2, further comprising the step of forming the first and second hand tool members based on the predetermined torque, the maximum outer dimensional envelope, the minimum dimensional envelope, and the predetermined injury force, wherein each of the first and second hand tool members comprises: a rectangular body having flat side edges and rounded corners, the rectangular body having a width and a height configured to facilitate gripping by a user and application of the predetermined torque; a center passageway within the rectangular body and extending between opposing inner and outer surfaces, the center passageway having a diameter configured to receive a respective one of the cable connector nuts; and a recessed portion within the rectangular body concentric to the center passageway to define an arcuate lip to engage a distal wall of the cable section, the recessed portion having a depth such that the mating surface of the cable section is configured to extend beyond the inner surface of the rectangular body.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The detailed description of the drawings particularly refers to the accompanying figures in which:
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DETAILED DESCRIPTION OF THE DRAWINGS
(17) The embodiments of the invention described herein are not intended to be exhaustive or to limit the invention to precise forms disclosed. Rather, the embodiments selected for description have been chosen to enable one skilled in the art to practice the invention.
(18) Referring initially to
(19) The confined space or chamber 20 may illustratively be defined by any conventional storage unit, cabinet, locker or control box. In one illustrative embodiment, the confined chamber 20 is defined by a sonar dome supported by a hull of a ship. In such an illustrative embodiment, the first cable sections 10a and 12a may be electrically coupled to an external controller, while the second cable sections 10b and 12b may be electrically coupled to sonar transducers. Such a sonar dome may be difficult to access and experience harsh environmental conditions, including moisture exposure to the cables received therein.
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(21) First or female enlarged connecting portion or ferrule 34 includes a distal tapered section 42 and a cylindrical section 44 defining a proximal socket or receptacle 45. The tapered section 42 transitions from a first outer diameter d1 of the conduit portion 30 to a second outer diameter d2 of the cylindrical section 44, where the second outer diameter d2 is greater than the first outer diameter d1 (
(22) Second or male enlarged connecting portion or ferrule 36 includes a distal tapered section 48 and a proximal cylindrical section 50 including a protrusion or plug 51. The tapered section 48 transitions from a first outer diameter d1 of the conduit portion 32 to a second outer diameter d2 of the cylindrical section 50, where the second outer diameter d2 is greater than the first outer diameter d1 (
(23) Female connecting portion or ferrule 34 illustratively includes a radially outwardly extending sealing ring wall or flange 54 positioned at the proximal end of the socket 45. The flange 54 includes an outer diameter d3 greater than the outer diameter d2 of cylindrical section 50 (
(24) First cable connector 22a illustratively comprises a connecting nut including a cylindrical body 64 defining a central passageway 66 extending between proximal and distal ends 68 and 70. A threaded connecting portion includes a plurality of external or male threads 72 supported by an outer surface of the body 64 at the proximal end 68. An axially inwardly facing mating surface 74 is supported by the body 64 distally of the external threads 72. An axially outwardly facing distal wall or contact surface 75 is defined by the distal end 70 of body 64. An inner wall or retaining lip 76 extends radially inwardly at the distal end 70 of the body 64. A plurality of circumferentially spaced protrusions 78, illustratively keys, lugs or ribs, extend radially outwardly from the outer surface of the cylindrical body 64 proximate the distal end 70. Illustratively, the first cable connector 22a is formed from a molded polymer.
(25) Second cable connector 22b illustratively comprise a connecting nut including a cylindrical body 80 defining a central passageway 82 extending between proximal and distal ends 84 and 86. A threaded connecting portion includes a plurality of internal or female threads 88 supported by an inner surface of the body 80 at the proximal end 84. An inner retaining lip 90 extends radially inwardly at the distal end 86 of the body 80. An axially inwardly facing mating surface 92 is supported by the body 80 at the proximal end 84. An axially outwardly facing distal wall or contact surface 93 is defined by the distal end 86 of the body 80. A plurality of circumferentially spaced protrusions 94, illustratively keys, lugs or ribs, extend radially outwardly from the outer surface of the cylindrical body 80 proximate the distal end 86. Illustratively, the second cable connector 22b is formed from a molded polymer.
(26) In a coupled configuration, the external threads 72 of the first cable connector 22a are threadably coupled to the internal threads 88 of the second cable connector 22b. As the first cable connector 22a is tightened relative to the second cable connector 22b, the retaining lips 76 and 90 move axially towards each other, thereby applying a compressive force between the flanges 54 and 56 of the connecting portions 34 and 36 of cable sections 10a and 10b, respectively. The axially facing mating surfaces 74 and 92 define a mating interface 96 visible to a user between hand tool members 102a and 102b when the first cable connector 22a is fully threadably engaged with the second cable connector 22b, such that the cable sections 10a and 10b are fully seated with each other. In the fully seated configuration, the seal between flanges 54 and 56 prevents water and/or debris from interfering with the electrical connection between the sockets 52 and pins 46.
(27) With further reference to
(28) According to the illustrative embodiment of
(29) Each of the tool members 102a and 102b includes a first aperture or side opening 108 on one side 106d that is operable to permit cable section 10a, 10b to pass therethrough and into a center aperture or passageway 110. Opposing edges 112a, 112b of the side opening 108 are rounded to prevent damage to the cable 10 passing therethrough. The width of the side opening 108 is illustratively 0.5 inches. The center passageway 110 extends between opposing inner (proximal) and outer (distal) surfaces 114 and 116 of the body 104 along a longitudinal center axis 117. The center passageway 110 illustratively has a diameter of 1.25 inches. The body 104 is illustratively formed from a rigid durable material, such as aluminum for its light weight and durability.
(30) The flat edges 106a, 106b, 106c of body 104 facilitate an operator gripping and rotating the tool member 102a, 102b, particularly in hot and wet environments. Outer surfaces 118 of the edges 106a, 106b, 106c may be textured to facilitate gripping. In certain illustrative embodiments, an elastomeric gripping surface may be applied to the outer surfaces 118 of the outer edges 106a, 106b, 106c. The corners 120a, 120b, 120c, 120d between the edges 106a, 106b, 106c, 106d are illustratively rounded to prevent damage to the cable 10 and potential injury to the hands of the operator (
(31) Each of the hand tool members 102a, 102b is formed with a recessed portion 122 formed concentrically to the center passageway 110 and defined by a retaining wall or lip 124. The recessed portion 122 is adapted to receive distal end one of the cable connectors 22a, 22b such that mating surfaces 74 and 92 at interface 96 of the cable connectors 22a, 22b are visible when the cable connectors 22a, 22b are in a coupled configuration. Illustratively, the recessed portion 122 has a diameter based on the outer diameter of the cooperating cable connector 22a, 22b. In the illustrative embodiment, the recessed portion has a diameter of 1.5 inches (
(32) The cable end connectors 22a, 22b engage with each other with respective male and female threads 72 and 88. The cable connectors 22a, 22b are configured to provide axial compressive or coupling force to opposing ends of the cable 10 when the tool members 102a and 102b rotate the connectors 22a and 22b via the threads 72 and 88. Each of the connectors 22a and 22b illustratively includes flange or wall 76, 90 which extends from the body 64, 80 of the connector 22a and 22b from distal end 70, 86 and surrounds the cable 10 that is adapted to engage with the corresponding ring wall 54, 56 formed on an end of the cable 10.
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(36) Substitution of different inserts 206 within the outer frame 204 provides for the ability to manipulate cable connectors 22a, 22b having different shapes and/or sizes. More particularly, the outer frame 204 includes a recess 208 configured to receive different inserts 206 having different sized center passageways and/or recessed portions configured to couple with specific pairs of cable connectors 22a, 22b which have different shapes and outer diameters, as well as optionally different placement of keys, protrusions or lugs 78, 94. A plurality of retainers 210 maintain the insert 206 within the outer frame 204. Retainer 210 may include spring loaded ball bearings 212 that engage within a depression or opening 214 in the insert 206. Alternatively, the retainer 210 may comprise other conventional coupling means, such as fasteners or thumb screws which couple the outer frame 204 with the insert 206.
(37) With reference to
(38) The method continues at block 605 by providing cable connector hand tool 100 including first and second hand tool members 102a and 102b. As further detailed herein, each hand tool member 102a and 102b includes body 104 having opening 108 in side section 106d, and first recessed area or portion 122 extending around center aperture or passageway 110 extending along central axis 117 of the body 104, and lip 124 surrounding the center passageway 110. The walls 76 and 90 of the cable connectors 22a and 22b move axially inwardly with the lips 124 of the hand tool members 102a and 102b so as to compress the first and second cable connection sections 10a and 10b together. The recessed portion 122 is formed with the plurality of recesses or keyways 125 adapted to couple with the plurality of protrusions or keys 78 and 94 of cable connectors 22a and 22b. The recessed portion 122 is further formed to have a shape and diameter configured to permit the first and second cable connectors 22a and 22b to pass into the recessed portion 122 with a non-interference fit and abut the lip 124. The recessed portion 122 is further formed to have depth dimension (r) measured along the central axis 117, such that each of the hand tool members 102a and 102b partially enclose distal ends of respective first and second cable connectors 22a and 22b such that interface 96 defined by the mating surfaces 74 and 92 is visible to an operator when the first and second cable sections 10a and 10b are fully coupled.
(39) At block 607, the first and second cable sections 10a and 10b are coupled together as shown in
(40) Continuing at block 611, the method continues by coupling the first and second hand tool members 102a and 102b with respective first and second cable connectors 22a and 22b. With reference to
(41) Continuing at block 615, the operator visually examines the mating surfaces 74 and 92 of the interface 96 visible between the first and second hand tool members 102a and 102b to verify they are in physical contact. At block 617, if the mating surfaces 74 and 92 of the interface 96 are not in physical contact, then the process returns to block 613 where additional rotational force is applied to the first and second hand tool members 102a and 102b. Proper mating surface contact at the interface 96 is again inspected at block 615.
(42) While the above detailed description illustrates use of the hand tool 100 with electrical cables including a compression coupling, it should be appreciated that the hand tool may be used in other coupling applications. For example, the hand tool 100 may be used to couple fluid carrying tubes (e.g., water, gas and/or hydraulic fluid conduits), fiber optic cables, etc.
(43) With reference to
(44) The method continues at block 707 by determining a minimum dimensional envelope for hand tool members 102a, 102b. More particularly, the predetermined amount of torque and the injury force are used to determine the minimum dimensional envelope (i.e., the minimum width (w) and minimum height (h)) of rectangular body 104 of hand tool members 102a and 102b. The predetermined injury force associated with a shape and size of the first and second hand tool members 102a and 102b is based on a force that causes an abrasive or force application injury to an operator's hand using the hand tool a first plurality of times. The predetermined amount of torque, the average force of an operator, and the injury force are used to calculate the width (w) and height (h) of the rectangular body 104.
(45) At block 709, the method continues by providing cable connector hand tool member 102a, 102b including rectangular body 104 formed with at least three flat edges 106. The first rectangular body 104 includes width (w) and height (h) configured to define a dimensional envelope between the maximum and minimum dimensional envelope as determined above in blocks 703 and 707. In one illustrative embodiment, the width (w) and height (h) of the rectangular body 104 are each determined to be 2.5 inches (
(46) At block 711, the method continues by forming center passageway 110 within rectangular body 104 and extending between opposing inner and outer surfaces 114 and 116, the center passageway 110 having a diameter configured to receive cable connector nut 22a, 22b. The method continues at block 713, by forming side opening 108 within side edge 106d of the rectangular body 104 and extending into the center passageway 110, the side opening 108 dimensioned to receive cable conduit portion 30.
(47) At block 715, the method further includes forming recessed portion 122 within rectangular body 104 concentric to the center passageway 110 and having a diameter configured to define arcuate lip 124 for engaging distal wall 75, 93 of cable connector nut 22a, 22b the recessed portion 122 having a depth (r) such that mating surfaces 74, 92 of the cable connector nuts 22a, 22b are configured to extend beyond the inner surfaces 114 of the respective rectangular bodies 104. As further detailed above, the depth (r) is illustratively defined to be 0.38 inches (
(48) Although the invention has been described in detail with reference to certain preferred embodiments, variations and modification exist within the spirit and scope of the invention as described and defined in the following claims.