Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B7/00—Insulated conductors or cables characterised by their form
  • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
  • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
  • H01R43/048—Crimping apparatus or processes
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49117—Conductor or circuit manufacturing
  • Y10T29/49174—Assembling terminal to elongated conductor
  • Y10T29/49181—Assembling terminal to elongated conductor by deforming

Definitions

• the invention relates to an electric cable provided with an external marking for controlling the position of the cable in a drum to be crimped on said cable.
• the invention also relates to a method of crimping a barrel on such a cable. More specifically, the invention relates to a visible marking with the naked eye, formed on the sheath of the cable, said marking being repetitive so as to allow, by a simple visual control, to ensure the correct position of the cable in the before crimping the drum to the cable and thus guarantee electrical continuity between the cable and the drum.
• An object of the invention is to ensure a good crimp of a barrel of a contact on an electric cable to ensure electrical continuity between the cable and the electronic device connected to the cable by the contact.
• a contact whose bole has no access hole or whose access hole is obstructed.
• Such contact is particularly suitable when using a cable having a conductive core of aluminum. Indeed, in this case it is preferable to avoid exposure to the air of the conductive core to reduce its risk of oxidation which could result in less electrical continuity between said conductive core and said contact.
• the use of a contact whose barrel is devoid of a manhole or whose access hole is obstructed contributes to preventing the passage of air into the barrel of this contact, when the latter is crimped, thus helping to reduce the risks of oxidation of the conductive core of the cable. But then it is no longer possible to check the position of the cable in the contact barrel before crimping since the barrel is without a manhole or the manhole is obstructed. As a result, the risks of faulty crimping are increased.
• An object of the invention is to provide a means of checking the position of the cable in a barrel of a contact before crimping so as to ensure a good position of the cable in the barrel and a proper electrical continuity along the cable and the contact.
• Another object of the invention is to provide a method for reliable electrical crimping of a drum on a cable, regardless of the nature of the conductive core of the cable.
• the invention proposes to provide visual control means not on the barrel to be crimped on the cable, but on the cable itself.
• the cable according to the invention is provided in its length with a repetitive external marking.
• External marking consists of a set of two consecutive patterns in the length of the cable, repeated at least twice in the length of the cable. The marking makes it possible to know the position of the cable in the contact barrel before crimping said barrel on the contact.
• this visual control means is used to precisely cut the cable to form a connection end. The connection end is then stripped to release the core of the cable that will be introduced into the contact barrel.
• the visual control means formed by the marking, is used to ensure that the cable is properly positioned in the barrel.
• the visual control means according to the invention is therefore useful at the time of cutting the cable, at the time of insertion of the cable into the barrel of the contact and at the time of crimping the barrel on the cable. By following these steps, it is possible to safely obtain a good crimp of the drum on the cable.
• the pitch between two consecutive sets of two patterns, as well as the distance separating two patterns of the same set depends in particular on the section of the cable.
• a specific external marking is carried out, with a fixed pitch and distance, which subsequently guarantees a safe visual inspection and therefore a safe electrical crimping of the drum on the contact, without the need for any other control, such as a visual inspection through a hole visit on the shaft.
• marking according to the invention can be performed on the current cables. Indeed, the marking according to the invention can be affixed to the sheath of all the cables and can even be combined with another marking having another function, such as to allow the identification of the cable. This marking can be performed easily by a laser.
• the subject of the invention is therefore an electrical cable provided with a sheath comprising an external marking, formed of a block of two consecutive patterns in a length of the cable, characterized in that the said block of patterns is repeated at least twice in each case. the length of the cable from a free end of the cable, the marking being a function of the diameter of the cable.
• a distance between two patterns of the same block and / or a distance between two adjacent blocks of patterns is a function of the diameter of the cable
• marking is repeated at least at both ends of the cable; - the marking is repeated over the entire length of the cable;
• a distance between two blocks of adjacent patterns is constant for a given cable section
• the two consecutive patterns of a block of patterns are separated from each other by an unlabeled zone; - the patterns are squares or rectangles;
• the cable core is made of aluminum.
• the invention also relates to a method of crimping a barrel of a contact on a cable, characterized in that it comprises the step of: - marking the sheath of the cable, before crimping, with external marking repetitive in the length of the cable, so as to control a position of the cable in the barrel.
• the external marking consists of a block of two patterns, the two patterns being consecutive in a length of the cable, said pattern block being repeated at least twice in the length of the cable from the free end of the cable.
• a distance between two adjacent patterns belonging to two blocks of different patterns is substantially equal to the depth of the contact barrel to be crimped on said cable.
• the correct crimping position is obtained when the open end of the contact barrel partially surrounds one of the two patterns of the block of patterns which is partially housed in the barrel.
• the cable is stripped before being introduced into the contact barrel.
• the external marking of the sheath is made by laser so as to obtain an important accuracy, especially at the distances between two patterns and the pitch between two blocks of patterns.
• FIGS. 1A to 1D An example of implementation of the crimping method according to the invention
• - Figures 2A and 2B Two examples of good positioning of the cable in the barrel of a contact before crimping;
• FIG. 4 A schematic representation of a cable according to an exemplary embodiment of the invention.
• FIG. 5 A schematic representation of a cable according to another embodiment of the invention.
• FIG. 1A shows an example of a cable provided with an external marking according to the invention.
• the cable 1 comprises an insulating outer sheath 2.
• the marking consists of a block 3 of two consecutive patterns 4, 5 separated from each other by an unlabeled zone 6.
• the two consecutive patterns 4, 5 of the block 3 of Patterns are consecutive in the length of the cable 1.
• the length of the cable 1 means the largest dimension of the cable 1, parallel to the longitudinal axis of said cable 1.
• the block 3 of patterns is repeated several times along the cable 1 .
• the patterns 4, 5 are rings surrounding the cable 1 in its diameter.
• the patterns 4, 5 are therefore continuous over the entire section of the cable 1.
• the patterns 4, 5 of the blocks 3 of patterns are squares. It is possible to make only one square in a section of cable 1 considered. Of course, it is also possible to make several squares in said section in order to surround the cable section 1 considered patterns 4, 5. The external marking according to the invention is then visible regardless of the position of the cable 1 relative to a user.
• FIG. 5 shows another embodiment of a cable 1 according to the invention, in which the patterns 4, 5 of the blocks 3 of patterns are round.
• the rounds 4, 5 are repeated several times in the section of the cable, so as to form discontinuous rings around the cable 1.
• the external marking is visible. For example, if the crimping is performed in a crimping device, a person can proceed to control the position of the cable 1 in a barrel of a contact without having to contort or move the cable 1 in the crimping device for access marking.
• the distance D, or not, separating two blocks 3 of patterns is constant along the cable 1.
• the pitch D may in particular be a function of the diameter of the cable 1, and / or the depth of the contact barrel in which the cable is intended to be introduced.
• the distance d between two consecutive patterns 4 and 5 of the same block 3 of patterns, and which forms the unlabeled area 6, may also vary depending on the section of the cable 1.
• width I of the patterns 4, 5 Another parameter that can be taken into account to achieve the adequate external marking on the cable 1 is the width I of the patterns 4, 5.
• width I we mean the dimension of the pattern 4, 5 parallel to the axis of the cable
• the width I corresponds to the diameter of the circles.
• the width I corresponds to the length of one side of a square.
• the pitch D between two adjacent blocks 3 is 19 mm (+/- 0.1 mm)
• the distance d between two patterns 4, 5 of a the same block is 2 mm (+/- 0.1 mm)
• the width I of the patterns 4, 5 is 0.5 mm (+/- 0.1 mm).
• the external marking of the cable is used during different stages. First, before introducing the cable 1 into a barrel of a contact, said cable 1 is cut at the level of the unlabeled zone 6, that is to say between two consecutive patterns 4, 5 of the same block 3 of patterns ( Figure 1 B).
• the drum 9 is electrically crimped on the core 8 of the cable 1. It is also possible to carry out a tight crimping of the barrel 9 on the sheath 2 of the cable 1. Thanks to the sealing crimping, the sealing of the connection between the cable 1 and the contact 7 is increased, and the risks of oxidation, especially when the core 8 of the cable 1 is aluminum.
• FIGS. 2A and 2B show two examples of good positioning of the cable 1 in the shank 9 of the contact 7.
• the block 3 of patterns taken into consideration for the visual inspection of the position of the cable 1 in the shank 9 is the block 3 immediately visible at the end of the cable 1 outside the drum 9.
• the open end 11 of the barrel 9 partially surrounds the first pattern 4 of the pattern block 3 which is partially housed in the barrel 9.
• the second pattern 5 of said block 3 is entirely housed in said barrel 9.
• the first pattern 4 of the block 3 is entirely outside said shank 9, while the second pattern 5 of said block 3 is partially housed in the shank 9.
• Figures 2A and 2B respectively represent the limits of the acceptance interval z in which the user is assured that the cable 1 is correctly positioned in the barrel.
• the acceptance interval z is here between the two units 4, 5 of the same block 3, said concerned block 3 being partially housed in the barrel 9.
• FIGS. 3A and 3B are shown two incorrect positioning of the cable 1 in the drum 9.
• the block 3 of patterns taken into consideration for the visual inspection of the position of the cable 1 in the drum 9 is the block 3 immediately visible at the exit of the cable 1 out of the barrel 9.
• the two units 4, 5 of the block 3 are entirely external to the shank 9, so that the open end 11 of the shank 9 does not surround the cable 1 in the range of acceptance z, but in an area upstream of the acceptance interval z.
• the core of the cable 1 is not located correctly in the drum 9 to ensure that when crimping the drum 9 on the cable 1, there is good contact between the barrel 9 and the core of the cable 1.
• the block 3 of patterns is entirely housed in the drum 9, so that the open end 11 of the drum 9 does not surround the cable 1 in the acceptance interval z but in an area downstream of the acceptance interval z.
• the core of the cable 1 is inserted too deeply into the shaft 9 so that the crimping of the shaft 9 on the cable 1 occurs at the core, and will most certainly take place at the sheath.
• the cable 1 is provided with a set of two blocks 3 of patterns, said blocks 3 of patterns being considered from the free end of the cable 1.
• the user only needs two blocks 3 of patterns.
• the first block 3 of patterns, or block 3 located at the free end 12 of the cable 1 serves as a marker for cutting the cable 1 and form a new free end 12.
• the second block 3 of patterns forms the visual means allowing to know the position of the cable 1 in the drum 9.
• the marking according to the invention can be achieved by means of a laser, which makes it possible to execute said marking with the required accuracy.
• the marking according to the invention can also be made manually, for example using a marking template to facilitate the drawing of the patterns 4, 5.
• the manual marking can be done by means of a pencil, ink projection or painting, etc.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
• Manufacturing Of Electrical Connectors (AREA)
• Laying Of Electric Cables Or Lines Outside (AREA)
• Insulated Conductors (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=35617662

Family Applications (1)

Country Status (9)

Families Citing this family (19)

Family Cites Families (16)

• 2005
  • 2005-06-14 FR FR0551593A patent/FR2887069B1/fr active Active
• 2006
  • 2006-06-01 RU RU2008101424/07A patent/RU2407086C2/ru not_active IP Right Cessation
  • 2006-06-01 CN CN2006800203122A patent/CN101194325B/zh not_active Expired - Fee Related
  • 2006-06-01 WO PCT/FR2006/001293 patent/WO2006134251A1/fr active Application Filing
  • 2006-06-01 EP EP06778586A patent/EP1891646A1/de not_active Withdrawn
  • 2006-06-01 BR BRPI0612052-0A patent/BRPI0612052A2/pt not_active IP Right Cessation
  • 2006-06-01 CA CA002609334A patent/CA2609334A1/fr not_active Abandoned
  • 2006-06-01 US US11/916,984 patent/US8148639B2/en active Active
  • 2006-06-01 JP JP2008516369A patent/JP5190360B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

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