WO2017068953A1 - Terminal-equipped electric wire and connector - Google Patents

Terminal-equipped electric wire and connector Download PDF

Info

Publication number
WO2017068953A1
WO2017068953A1 PCT/JP2016/079367 JP2016079367W WO2017068953A1 WO 2017068953 A1 WO2017068953 A1 WO 2017068953A1 JP 2016079367 W JP2016079367 W JP 2016079367W WO 2017068953 A1 WO2017068953 A1 WO 2017068953A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
barrel
core wire
electric wire
mold
Prior art date
Application number
PCT/JP2016/079367
Other languages
French (fr)
Japanese (ja)
Inventor
拓次 大塚
平井　宏樹
小野　純一
野村　秀樹
細川　武広
中村　哲也
小林　宏平
能章 山野
貴章 伊藤
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2017068953A1 publication Critical patent/WO2017068953A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • the present invention relates to an electric wire with a terminal and a connector.
  • Patent Document 1 a barrel portion of a copper terminal fitting is connected by crimping to a front end portion of a covered electric wire in which an aluminum core wire is surrounded by an insulation coating, and a contact portion between the core wire and the terminal fitting is molded with a synthetic resin.
  • a technique for anticorrosion by surrounding in a liquid-tight manner is disclosed.
  • the mold part covers up to the front end of the insulation coating behind the terminal fitting.
  • terminal fittings are formed with an insulation barrel part that is crimped to the insulation coating, and the insulation barrel part has a bending suppression function that suppresses the transmission of the influence of the bending of the coated wire to the wire barrel part.
  • the insulation barrel part is not formed. Therefore, the entire terminal fitting and the mold part can be accommodated in the housing without enlarging the volume of the terminal accommodating chamber formed in the housing.
  • the mold portion is required to have not only a waterproof function but also a function to suppress bending instead of the insulation barrel portion.
  • the conventional mold part is required to be as small as possible in order to be accommodated in the terminal accommodating chamber, it is thin. Therefore, the bending rigidity of the mold part is low and the bending suppressing function of the mold part is insufficient.
  • the present invention has been completed based on the above-described circumstances, and an object thereof is to suppress the influence of the bending of the covered electric wire from reaching the connecting portion between the terminal fitting and the core wire.
  • the electric wire with terminal of the first invention is A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side; Terminal fittings, A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire; A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; , A mold part that covers the entire area of the exposed part including the crimping part between the first barrel part and the second barrel part of the core wire, and a mold part that covers the front end part of the insulating coating in a liquid-tight manner,
  • the terminal fitting as a whole and the mold portion are accommodated in a terminal accommodation chamber formed in a housing.
  • the connector of the second invention is A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side; Terminal fittings, A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire; A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; , A mold part that covers the entire area of the exposed part including the crimped part between the first barrel part and the second barrel part of the core wire, and a front end part of the insulating coating in a liquid-tight manner, It is characterized in that it includes a housing in which a terminal accommodating chamber for accommodating the entire terminal fitting and the mold part is formed.
  • the second barrel portion is crimped to the exposed portion of the core wire behind the first barrel portion, the covered electric wire is bent and deformed behind the terminal fitting.
  • the deformation of the core wire is prevented or suppressed in the second barrel portion. Therefore, it is possible to prevent or suppress the influence of the bending of the covered electric wire from reaching the crimping portion between the first barrel portion and the core wire.
  • the perspective view of the connector of Example 1 Front view of connector XX sectional view of FIG. Perspective view of electric wire with terminal Side view of electric wire with terminal Cross section of the electric wire with terminal
  • 1st and 2nd invention comprises the terminal main-body part which comprises the said terminal metal fitting, the baseplate part which comprises the said 1st barrel part and the said 2nd barrel part, and continues to the rear end of the base part of the said terminal main-body part, And a caulking piece constituting the first barrel portion and the second barrel portion and extending in pairs from both side edges in the width direction of the bottom plate portion, the bottom plate portion being raised to the base portion It may be in the form.
  • the height difference between the lower surface of the base portion of the terminal main body portion and the lower surface of the region surrounding the first barrel portion and the second barrel portion of the mold portion can be reduced or eliminated. Therefore, even if the shape of the inner wall of the terminal accommodating chamber is flat, the terminal fitting can be accommodated in the terminal accommodating chamber in a stable posture.
  • a cross-sectional area of the core wire in the second barrel portion may be larger than a cross-sectional area of the core wire in the first barrel portion.
  • the caulking piece constituting the first barrel part may be formed with a diameter-enlarged part that is enlarged toward the rear.
  • the contact pressure is increased by increasing the crimping force to the core wire in the first barrel portion, there is a concern that the core wire may bite into the rear end edge of the first barrel portion and break.
  • the encroachment of the core wire with respect to the rear-end edge of a 1st barrel part is relieve
  • the caulking piece constituting the second barrel portion may be formed with an enlarged diameter portion that is enlarged toward the rear.
  • the core wire is damaged by biting into the rear end edge of the second barrel portion.
  • the encroachment of the core wire with respect to the rear-end edge of a 2nd barrel part is relieve
  • the 1st and 2nd invention may be provided in the protrusion part which protruded out of the said housing among the said mold parts, and may be provided with the reinforcement part which raises the rigidity of the said protrusion part.
  • the reinforcement part which raises the rigidity of the said protrusion part.
  • the thickness of the protruding portion that protrudes out of the housing out of the mold portion is thicker than the thickness of the accommodating portion that is accommodated in the terminal accommodating chamber of the mold portion.
  • the said reinforcement part may be comprised. According to this configuration, the rigidity of the mold part can be increased without complicating the shape of the mold part.
  • the connector A of the present embodiment is configured to include the electric wire with terminal 10 and the housing 35.
  • the terminal-attached electric wire 10 is a form in which the covered electric wire 11, the terminal fitting 15, and the molded part 30 are integrated, and constitutes a conductive path that is elongated in the front-rear direction as a whole.
  • the covered electric wire 11 is composed of a core wire 12 made of aluminum or an aluminum alloy and a substantially cylindrical insulating coating 13 surrounding the core wire 12. Although the core wire 12 has a form in which a plurality of strands are bundled, the strands are not shown in FIGS. At the front end portion of the covered electric wire 11, the insulating coating 13 is peeled off by a predetermined length, and the core wire 12 is exposed.
  • a terminal fitting 15 described later is connected to the front end of the exposed portion 14 of the core wire 12 by crimping.
  • the terminal fitting 15 is formed by bending a copper or copper alloy plate material punched into a predetermined shape, and has an elongated shape in the front-rear direction as a whole. As shown in FIGS. 7 and 8, the terminal fitting 15 is composed of a terminal main body portion 16 constituting the front end side region, and a first barrel portion 23F and a second barrel portion 23R constituting the rear end side region. Yes.
  • the terminal body 16 is composed of a box-shaped connecting portion 17 having a rectangular tube shape and a connecting portion 18 connected to the rear end of the box-shaped connecting portion 17.
  • a tab of a mating terminal (not shown) having a male shape is inserted into and connected to the box-shaped connecting portion 17 from the front of the terminal fitting 15.
  • the connecting portion 18 has a form in which a pair of side wall portions 20 are raised from the left and right side edges of the bottom wall portion 19.
  • the bottom wall portion 19 of the connecting portion 18 is continuous with the lower wall portion 21 of the box-like connecting portion 17, and the bottom wall portion 19 and the lower wall portion 21 constitute a base portion 22 of the terminal main body portion 16. is doing.
  • the first barrel portion 23F includes a bottom plate portion 24 elongated in the front-rear direction and a pair of first caulking pieces 27F (the caulking pieces described in claims).
  • the pair of first caulking pieces 27 ⁇ / b> F extend from the front end side region in the circumferential direction (direction intersecting with the length direction of the terminal fitting 15) among both side edges in the width direction (left-right direction) of the bottom plate portion 24.
  • the second barrel portion 23R includes the bottom plate portion 24 and a pair of second caulking pieces 27R (the caulking pieces described in claims).
  • the pair of second caulking pieces 27 ⁇ / b> R extend in the circumferential direction (the direction intersecting the length direction of the terminal fitting 15) from the rear end side region of both side edges in the width direction (left-right direction) of the bottom plate portion 24. is there.
  • the first barrel portion 23F and the second barrel portion 23R are arranged so as to be aligned in the front-rear direction, and the second barrel portion 23R is disposed behind the first barrel portion 23F (that is, the rear end portion of the terminal fitting 15).
  • the bottom plate parts 24 of both the barrel parts 23F and 23R are continuously flush with each other at the same height.
  • the front end portion of the bottom plate portion 24 is connected to the rear end portion of the base portion 22 of the terminal body portion 16 in a step shape. That is, the bottom plate part 24 has a shape in which a region extending over the entire length is raised with respect to the base part 22.
  • Both barrel portions 23F and 23R are crimped to the outer periphery of the exposed portion 14 of the core wire 12 in a non-contact state with the insulating coating 13 by an automatic machine (not shown) called an applicator. At this time, the first barrel portion 23F is crimped to the front end side region of the exposed portion 14 of the core wire 12, and the second barrel portion 23R is crimped to the rear end side region of the exposed portion 14 of the core wire 12.
  • the exposed portion 14 of the core wire 12 placed on the bottom plate portion 24 is bent and deformed so as to surround the first caulking piece 27F and the second caulking piece 27R that make a pair.
  • the exposed part 14 of the core wire 12 and both barrel parts 23F and 23R of the terminal metal fitting 15 are fixed so as to be conductive.
  • the front end portion of the covered electric wire 11 and the terminal fitting 15 are connected in a substantially straight line.
  • the compression rate of the core wire 12 in the first barrel portion 23F (ratio of the cross-sectional area after crimping to the cross-sectional area before crimping of the core wire 12) is, for example, about 50 to 80%, and the core wire 12 in the second barrel portion 23R.
  • the compression ratio is, for example, 70 to 100%.
  • the value of the compression rate of the first barrel portion 23F is smaller than that of the second barrel portion 23R. That is, the cross-sectional area, height dimension, and width dimension of the first barrel portion 23F are smaller than the cross-sectional area, height dimension, and width dimension of the second barrel portion 23R.
  • the difference in compression ratio between the barrel portions 23F and 23R is due to the following reason.
  • the first barrel portion 23F that is crimped to the front side has a function of increasing contact pressure between the core wire 12 and the terminal fitting 15 to ensure contact reliability. Therefore, the compression rate of the core wire 12 in the first barrel portion 23F is reduced, and the contact pressure (adhesion degree) between the first barrel portion 23F and the core wire 12 is increased.
  • the second barrel portion 23 ⁇ / b> R is prevented from affecting the contact portion between the first barrel portion 23 ⁇ / b> F and the core wire 12.
  • the covered electric wire 11 is bent, the exposed portion 14 of the core wire 12 is pressed against the rear end edge of the second barrel portion 23R. Therefore, when the second barrel portion 23R strongly tightens the core wire 12, the outer periphery of the core wire 12 is There is concern about being damaged or damaged. Therefore, in the 2nd barrel part 23R, the compression rate is made larger than the 1st barrel part 23F, and the tightening to the core wire 12 is eased.
  • the first enlarged diameter portion 28F (the enlarged diameter portion described in the claims) along the circumferential direction is formed at the rear end portion of the first caulking piece 27F.
  • the first enlarged-diameter portion 28F has a shape expanded so that the diameter increases toward the rear.
  • the biting of the rear end edge of the first barrel portion 23F with respect to the outer periphery of the core wire 12 is strong, and there is a concern that the core wire 12 may be damaged. Therefore, by forming the first enlarged diameter portion 28F at the rear end edge portion of the first barrel portion 23F, the biting of the rear end edge portion of the first barrel portion 23F with respect to the outer periphery of the core wire 12 is alleviated.
  • the second enlarged portion 28R (the enlarged portion described in the claims) along the circumferential direction is also formed at the rear end portion of the second crimping piece 27R.
  • the second enlarged-diameter portion 28R has a shape that expands toward the rear so that the diameter dimension increases. If the covered electric wire 11 is greatly bent up and down, left and right behind the terminal fitting 15 or if its bending deformation is repeated, the core wire 12 will bite into the rear edge of the first barrel portion 23R and be damaged. Is concerned.
  • the second enlarged diameter portion 28R is formed as a countermeasure against this. By forming the second enlarged diameter portion 28R, the bite of the core wire 12 with respect to the rear end edge of the second barrel portion 23R is alleviated, so that the core wire 12 can be prevented from being damaged.
  • the mold part 30 is formed after the terminal fitting 15 is pressure-bonded to the core wire 12. Molding of the mold part 30 accommodates the entire barrel parts 23F and 23R, the rear end part of the connecting part 18 and the front end part of the insulating coating 13 in the covered electric wire 11 in a known mold (not shown). The molten resin (not shown) is injected into the mold, and the injected molten resin is solidified (cured).
  • the molded mold part 30 includes the whole barrel parts 23 ⁇ / b> F and 23 ⁇ / b> R, the entire exposed part 14 including the crimped part between the barrel parts 23 ⁇ / b> F and 23 ⁇ / b> R of the core wire 12, and the covered electric wire. 11, the front end portion of the region where the insulating coating 13 remains is surrounded in a liquid-tight manner over the entire circumference. Further, a part of the front end portion of the mold portion 30 is accommodated in the connecting portion 18 in front of the first barrel portion 23F.
  • the lower surface (outer surface) of the bottom region that covers the bottom plate portions 24 of both barrel portions 23F and 23R in the mold portion 30 is substantially the same height as the lower surface (outer surface) of the base portion 22 of the terminal body portion 16, more specifically, the base portion The position is slightly higher than the lower surface of 22.
  • the terminal-attached electric wire 10 in which the front end portion of the covered electric wire 11, the terminal fitting 15 and the mold portion 30 are integrated is inserted into the terminal accommodating chamber 36 from the rear of the housing 35.
  • the entire terminal fitting 15 and most of the exposed portion 14 of the core wire 12 excluding the rear end portion are accommodated in the terminal accommodating chamber 36. Therefore, the entire region of the covered wire 11 in which the insulating coating 13 surrounds the core wire 12 is arranged outside the terminal accommodating chamber 36 (housing 35).
  • a region of the mold portion 30 that is housed in the terminal housing chamber 36 and surrounds the entire terminal fitting 15 and the exposed portion 14 of the core wire 12 in a liquid-tight manner is a housing portion 31.
  • a region surrounding the rear end portion of the exposed portion 14 of the core wire 12 and the front end portion of the insulating coating 13 outside the rear of the terminal accommodating chamber 36 (housing 35) in a liquid-tight manner is the protruding portion 32. It has become.
  • the protruding part 32 of the mold part 30 has a function of suppressing the transmission of the influence of the bending to the terminal fitting 15 side when a region behind the mold part 30 of the covered electric wire 11 is bent up and down. ing.
  • a pair of upper and lower reinforcing portions 34 is formed on the protruding portion 32 of the mold portion 30 as reinforcing means for increasing the bending rigidity in the vertical direction of the mold portion 30.
  • the reinforcing portion 34 has a form in which the thickness of the upper surface side of the insulating coating 13 and the thickness of the lower surface side of the insulating coating 13 are made larger than the thickness of the housing portion 31 over substantially the entire length of the protruding amount region.
  • the height dimension of the mold part 30 is larger than that of the accommodating part 31 in the reinforcing part 34 (projecting part 32).
  • the width dimension of the reinforcement part 34 (projection part 32) is the same as the width dimension of the accommodating part 31.
  • the connector A of the first embodiment includes the housing 35 in which the plurality of terminal accommodating chambers 36 are formed, and the plurality of terminal-attached electric wires 10 that are individually inserted into the terminal accommodating chambers 36.
  • the terminal-attached electric wire 10 includes a covered electric wire 11, a terminal fitting 15, and a mold part 30.
  • the covered electric wire 11 has a core wire 12 and an insulating coating 13 surrounding the core wire 12, and the core wire 12 is exposed on the front end side of the covered electric wire 11 (a predetermined length range from the front end of the covered electric wire 11). ing.
  • a first barrel portion 23 ⁇ / b> F and a second barrel portion 23 ⁇ / b> R are formed on the rear end portion of the terminal fitting 15 so as to surround the exposed portion 14 of the core wire 12.
  • the second barrel portion 23 ⁇ / b> R is disposed behind the first barrel portion 23 ⁇ / b> F and ahead of the insulating coating 13. Therefore, the first barrel portion 23F and the second barrel portion 23R are not in contact with the insulating coating 13.
  • the mold part 30 liquid-tightens the front end part of the covered electric wire 11 (that is, the entire exposed part 14 including the crimped part with both the barrel parts 23F and 23R of the core wire 12 and the front end part of the insulating coating 13). Covering. Since the core wire 12 is made of aluminum or an aluminum alloy, the terminal fitting 15 is made of copper or a copper alloy. Therefore, as the anticorrosion means in the contact portion between the core wire 12 and the terminal fitting 15 (both barrel portions 23F and 23R). The contact portion between the core wire 12 and the terminal fitting 15 (both barrel portions 23F, 23R) is surrounded in a liquid-tight manner by a mold portion 30 made of synthetic resin.
  • the outer diameter of the insulating coating 13 is larger than the outer diameter of the core wire 12
  • the outer diameter of the region (protruding portion 32) surrounding the insulating coating 13 in the mold portion 30 is the region surrounding the core wire 12 in the mold portion 30 ( It becomes larger than the accommodating part 31).
  • the two barrel portions 23F and 23R formed at the rear end portion of the terminal fitting 15 do not surround the outer periphery of the insulating coating 13, and surround the outer periphery of the exposed portion 14 of the core wire 12. It has become. That is, the 1st barrel part 23 located in the front side has the function as a means to ensure conduction
  • the role of the second barrel portion 23R located on the rear side prevents the influence of the bending of the covered electric wire 11 from reaching the first barrel portion 23F (conventional wire barrel portion), as in the conventional insulation barrel portion. Or to suppress.
  • the second barrel portion 23 surrounds the core wire 12 instead of the insulating coating 13, the outer diameter is reduced by the thickness of the insulating coating 13 as compared to the case where the outer periphery of the insulating coating 13 is surrounded. ing.
  • the terminal housing chamber 36 accommodates the entire terminal fitting 15 and the front end portion of the mold portion 30 (that is, only the region in front of the front end of the insulating coating 13 in the mold portion 30). Yes. That is, the insulating coating 13 is not accommodated in the terminal accommodating chamber 36. Thereby, the entire region surrounding the terminal fitting 15 in the mold part 30 could be accommodated in the terminal accommodating chamber 36 without increasing the volume (height dimension or width dimension) of the terminal accommodating chamber 36. .
  • the 2nd barrel part 23R is crimped
  • the portion 23R the deformation of the core wire 12 is prevented or suppressed. Therefore, it is possible to prevent or suppress the influence of bending of the covered electric wire 11 from reaching the crimped portion between the first barrel portion 23F and the core wire 12.
  • the cross-sectional area of the core wire 12 in the second barrel portion 23R is larger than the cross-sectional area of the core wire 12 in the first barrel portion 23F. According to this configuration, in the first barrel portion 23F, since the crimping force to the core wire 12 is strong, high contact reliability can be ensured. Moreover, if the bending deformation of the covered electric wire 11 is repeated behind the terminal fitting 15, there is a concern that the core wire 12 may be damaged by biting into the rear end edge of the second barrel portion 23 ⁇ / b> R.
  • the crimping force to the core wire 12 is weaker than that of the first barrel portion 23F in the second barrel portion 23R, the biting of the core wire 12 with respect to the rear end edge of the second barrel portion 23R is alleviated. Thereby, breakage of the core wire 12 can be prevented.
  • the projecting portion 32 projecting out of the housing 35 in the mold portion 30 is provided with a reinforcing portion 34 as a means for increasing its rigidity.
  • the reinforcing portion 34 has a thickness in the vertical direction of the protruding portion 32 outside the housing 35 in the mold portion 30, and a thickness in the vertical direction of the accommodating portion 31 accommodated in the terminal accommodating chamber 36 in the mold portion 30. This is a thicker form. According to this configuration, the bending rigidity in the vertical direction of the protruding portion 32 can be increased without complicating the shape of the mold portion 30. Thus, since the bending rigidity of the protrusion part 32 of the mold part 30 was improved, the protrusion part 32 becomes difficult to deform
  • both barrel portions 23F and 23R of the terminal fitting 15 are configured to include caulking pieces 27F and 27R which are paired with the bottom plate portion 24.
  • the bottom plate portion 24 is connected to the base portion 22 of the terminal main body portion 16, and the crimping pieces 27 ⁇ / b> F and 27 ⁇ / b> R extend in pairs from both side edges in the width direction of the bottom plate portion 24.
  • the barrel portions 23F and 23R are crimped and connected to the core wire 12 placed on the bottom plate portion 24 so that the outer periphery thereof is surrounded by the crimping pieces 27F and 27R.
  • the barrel portions 23F and 23R are surrounded by the mold portion 30 over the entire circumference, but most of the terminal body portion 16 in front of the barrel portions 23F and 23R of the terminal fitting 15 is covered with the mold portion 30. I have not been told.
  • the entire terminal fitting 15 including the barrel portions 23 ⁇ / b> F and 23 ⁇ / b> R is accommodated in the terminal accommodating chamber 36 of the housing 35.
  • the mold part 30 covers the bottom plate part 24 of the barrel parts 23F and 23R, but does not cover the base part 22 of the terminal body part 16. Therefore, there is a concern that a step is generated between the outer surface of the base portion 22 and the outer surface of the mold portion 30 that covers the barrel portions 23F and 23R. When such a level difference occurs, a gap is generated between the outer surface of the base portion 22 and the inner wall surface of the terminal accommodating chamber 36 when the terminal fitting 15 is accommodated in the terminal accommodating chamber 36. There is a concern that the posture of the metal fitting 15 becomes unstable.
  • the bottom plate portions 24 of the barrel portions 23F and 23R are raised with respect to the base portion 22 of the terminal body portion 16. According to this configuration, the difference in height between the lower surface of the base portion 22 that is exposed from the terminal body portion 16 and the lower surface of the region surrounding the barrel portions 23F and 23R in the mold portion 30 is reduced or eliminated. it can. Therefore, even if the shape of the inner wall of the terminal accommodating chamber 36 is flat, the terminal fitting 15 can be accommodated in the terminal accommodating chamber 36 in a stable posture.
  • the formation range of the accommodating portion 42 (the region in which the terminal accommodating chamber 46 is accommodated) of the mold portion 41 is in addition to the formation range of the accommodating portion 31 of the first embodiment. 13 also extends to the surrounding area. Further, with respect to the housing 45, the formation range of the terminal accommodating chamber 46 is extended rearward from the terminal accommodating chamber 36 of the first embodiment. As a result, in the connector B of the second embodiment, the entire terminal fitting 15, the exposed portion 14 of the core wire 12, and the front end portion of the insulating coating 13 are accommodated in the terminal accommodating chamber 46.
  • a reinforcing portion 44 similar to the reinforcing portion 34 of the first embodiment is formed on the protruding portion 43 of the mold portion 41 that protrudes rearward of the terminal accommodating chamber 46.
  • the present invention is not limited to the embodiments described with reference to the above description and drawings.
  • the following embodiments are also included in the technical scope of the present invention.
  • the core wire of the covered electric wire is made of aluminum or aluminum alloy, but the material of the core wire is not limited to aluminum or aluminum alloy but may be other metals such as copper and copper alloy. May be.
  • the terminal fitting is made of copper or copper alloy, but the material of the terminal fitting is not limited to copper or copper alloy, but may be other metals such as aluminum or aluminum alloy. Good.
  • the entire mold portion may be accommodated in the terminal accommodating chamber.
  • the enlarged diameter portion is formed at the rear end portion of the first barrel portion. However, the enlarged diameter portion may not be formed at the rear end portion of the first barrel portion.
  • the enlarged diameter portion is formed at the rear end portion of the second barrel portion. However, the enlarged diameter portion may not be formed at the rear end portion of the first barrel portion.
  • the bottom plate portions of both barrel portions are raised with respect to the base portion of the terminal main body portion, but the bottom plate portion and the base portion are continuously flush with each other at the same height.
  • the reinforcing part is formed on the protruding part of the mold part, but the reinforcing part may not be formed on the protruding part.
  • the second barrel portion is not in contact with the insulating coating, but the rear end of the second barrel portion may be in contact with the front end surface of the insulating coating.
  • A, B Connector 10, 40 ... Electric wire with terminal 11 ... Coated electric wire 12 ... Core wire 13 ... Insulation coating 14 ... Exposed portion of core wire 15 ... Terminal metal fitting 16 ... Terminal body portion 22 ... Base portion 23F ... First barrel portion 23R ... Second barrel portion 24 ... bottom plate portion 27F ... first caulking piece (caulking piece of the first barrel portion) 27R ... Second caulking piece (caulking piece of the second barrel part) 28F ... 1st diameter expansion part (diameter expansion part of the 1st barrel part) 28R ... 2nd diameter expansion part (diameter expansion part of 2nd barrel part) 30, 41 ... Mold part 35, 45 ... Housing 36, 46 ... Terminal accommodation chamber 31, 42 ... Accommodation part 32, 43 ... Projection part 33, 44 ... Reinforcement part

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

The present invention suppresses a connection portion between a terminal metal fitting and a core wire from being influenced by bending of a covered electric wire. A terminal-equipped electric wire (10) is provided with: a first barrel portion (23F) that is formed in a terminal metal fitting (15) and that is press-bonded to the front end side region of an exposed portion (14) of a core wire (12); a second barrel portion (23R) that is formed at a position, in the terminal metal fitting (15), behind the first barrel portion (23F) but forward of an insulation covering (13) and that is press-fit to the rear end side region of the exposed portion (14) of the core wire (12); and a mold portion (30) that covers, in a liquid-tight manner, the front end portion of the insulation covering (13) and the entire region of the exposed portion (14) including portions of the core wire (12) press-bonded to the first barrel portion (23F) and the second barrel portion (23R). The entirety of the terminal metal fitting (15) and the mold portion (30) are housed in a terminal storing chamber (36) of a housing (35).

Description

端子付き電線及びコネクタElectric wires and connectors with terminals
　本発明は、端子付き電線及びコネクタに関するものである。 The present invention relates to an electric wire with a terminal and a connector.
　特許文献１には、アルミニウム製の芯線を絶縁被覆で包囲した被覆電線の前端部に、銅製の端子金具のバレル部を圧着によって接続し、芯線と端子金具との接触部分を合成樹脂製のモールド部で液密状に包囲することで防食する技術が開示されている。モールド部は、端子金具の後方において絶縁被覆の前端部まで覆っている。 In Patent Document 1, a barrel portion of a copper terminal fitting is connected by crimping to a front end portion of a covered electric wire in which an aluminum core wire is surrounded by an insulation coating, and a contact portion between the core wire and the terminal fitting is molded with a synthetic resin. A technique for anticorrosion by surrounding in a liquid-tight manner is disclosed. The mold part covers up to the front end of the insulation coating behind the terminal fitting.
　一般的な端子金具には、絶縁被覆に圧着されるインシュレーションバレル部が形成されており、インシュレーションバレル部は、被覆電線の曲げの影響をワイヤバレル部に伝えるのを抑制する曲げ抑制機能を有する。一方、特許文献１の端子金具には、芯線に圧着されるワイヤバレル部は形成されているが、インシュレーションバレル部は形成されていない。したがって、ハウジング内に形成されている端子収容室の容積を拡大しなくても、端子金具の全体とモールド部をハウジングの内部に収容することができる。 In general terminal fittings are formed with an insulation barrel part that is crimped to the insulation coating, and the insulation barrel part has a bending suppression function that suppresses the transmission of the influence of the bending of the coated wire to the wire barrel part. Have. On the other hand, although the wire barrel part crimped | bonded to a core wire is formed in the terminal metal fitting of patent document 1, the insulation barrel part is not formed. Therefore, the entire terminal fitting and the mold part can be accommodated in the housing without enlarging the volume of the terminal accommodating chamber formed in the housing.
特開２０１２－００３８５６号公報JP 2012-003856 A
　上述のように、従来の端子金具にはインシュレーションバレル部が形成されていないため、モールド部には、防水機能だけでなく、インシュレーションバレル部に替わって曲げを抑制する機能も求められる。しかし、従来のモールド部は、端子収容室に収容するために極力小径にすることが求められていることから、肉薄とされている。そのため、モールド部の曲げ剛性が低く、モールド部の曲げ抑制機能は不十分であった。 As described above, since the insulation barrel portion is not formed in the conventional terminal fitting, the mold portion is required to have not only a waterproof function but also a function to suppress bending instead of the insulation barrel portion. However, since the conventional mold part is required to be as small as possible in order to be accommodated in the terminal accommodating chamber, it is thin. Therefore, the bending rigidity of the mold part is low and the bending suppressing function of the mold part is insufficient.
　本発明は上記のような事情に基づいて完成されたものであって、被覆電線の曲げの影響が端子金具と芯線との接続部に及ぶのを抑制することを目的とする。 The present invention has been completed based on the above-described circumstances, and an object thereof is to suppress the influence of the bending of the covered electric wire from reaching the connecting portion between the terminal fitting and the core wire.
　第１の発明の端子付き電線は、
　芯線と、前記芯線を包囲する絶縁被覆とを有していて、前端側では前記芯線が露出されている被覆電線と、
　端子金具と、
　前記端子金具に形成され、前記芯線の露出部の前端側領域に対し包囲するように圧着された第１バレル部と、
　前記端子金具における前記第１バレル部よりも後方で前記絶縁被覆よりも前方の位置に形成され、前記芯線の前記露出部の後端側領域に対し包囲するように圧着された第２バレル部と、
　前記芯線のうち前記第１バレル部及び前記第２バレル部との圧着部分を含む前記露出部の全領域と、前記絶縁被覆の前端部とを液密状に覆うモールド部とを備え、
　前記端子金具の全体と前記モールド部とが、ハウジングに形成された端子収容室に収容されるようになっているところに特徴を有する。 The electric wire with terminal of the first invention is
A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side;
Terminal fittings,
A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire;
A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; ,
A mold part that covers the entire area of the exposed part including the crimping part between the first barrel part and the second barrel part of the core wire, and a mold part that covers the front end part of the insulating coating in a liquid-tight manner,
The terminal fitting as a whole and the mold portion are accommodated in a terminal accommodation chamber formed in a housing.
　第２の発明のコネクタは、
　芯線と、前記芯線を包囲する絶縁被覆とを有していて、前端側では前記芯線が露出されている被覆電線と、
　端子金具と、
　前記端子金具に形成され、前記芯線の露出部の前端側領域に対し包囲するように圧着された第１バレル部と、
　前記端子金具における前記第１バレル部よりも後方で前記絶縁被覆よりも前方の位置に形成され、前記芯線の前記露出部の後端側領域に対し包囲するように圧着された第２バレル部と、
　前記芯線のうち前記第１バレル部及び前記第２バレル部との圧着部分を含む前記露出部の全領域と、前記絶縁被覆の前端部とを液密状に覆うモールド部と、
　前記端子金具の全体と前記モールド部とを収容する端子収容室が形成されたハウジングとを備えているところに特徴を有する。 The connector of the second invention is
A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side;
Terminal fittings,
A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire;
A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; ,
A mold part that covers the entire area of the exposed part including the crimped part between the first barrel part and the second barrel part of the core wire, and a front end part of the insulating coating in a liquid-tight manner,
It is characterized in that it includes a housing in which a terminal accommodating chamber for accommodating the entire terminal fitting and the mold part is formed.
　第１の発明及び第２の発明によれば、第２バレル部が、第１バレル部の後方において芯線の露出部に圧着されているので、端子金具よりも後方において被覆電線が曲げ変形しても、第２バレル部では芯線の変形が阻止又は抑制される。したがって、被覆電線の曲げの影響が第１バレル部と芯線との圧着部分に及ぶことを阻止又は抑制することができる。 According to the first and second inventions, since the second barrel portion is crimped to the exposed portion of the core wire behind the first barrel portion, the covered electric wire is bent and deformed behind the terminal fitting. However, the deformation of the core wire is prevented or suppressed in the second barrel portion. Therefore, it is possible to prevent or suppress the influence of the bending of the covered electric wire from reaching the crimping portion between the first barrel portion and the core wire.
実施例１のコネクタの斜視図The perspective view of the connector of Example 1 コネクタの正面図Front view of connector 図２のＸ－Ｘ線断面図XX sectional view of FIG. 端子付き電線の斜視図Perspective view of electric wire with terminal 端子付き電線の側面図Side view of electric wire with terminal 端子付き電線の断面図Cross section of the electric wire with terminal 端子付き電線においてモールド部を形成する前の状態をあらわす斜視図The perspective view showing the state before forming a mold part in an electric wire with a terminal 端子付き電線においてモールド部を形成する前の状態をあらわす断面図Sectional view showing the state before forming the molded part in the electric wire with terminal 端子付き電線においてモールド部を形成する前の状態をあらわす平面図Plan view showing the state before forming the molded part in the electric wire with terminal 実施例２のコネクタの断面図Sectional drawing of the connector of Example 2
　第１及び第２の発明は、前記端子金具を構成する端子本体部と、前記第１バレル部及び前記第２バレル部を構成し、前記端子本体部の基底部の後端に連なる底板部と、前記第１バレル部及び前記第２バレル部を構成し、前記底板部の幅方向両側縁から対をなして延出するカシメ片とを備え、前記底板部が、前記基底部に対して底上げした形態であってもよい。この構成によれば、端子本体部の基底部の下面と、モールド部のうち第１バレル部及び第２バレル部を包囲する領域の下面との間の高低差を小さく、又は解消できる。したがって、端子収容室の内壁の形状がフラットであっても、端子金具を安定した姿勢で端子収容室内に収容することができる。 1st and 2nd invention comprises the terminal main-body part which comprises the said terminal metal fitting, the baseplate part which comprises the said 1st barrel part and the said 2nd barrel part, and continues to the rear end of the base part of the said terminal main-body part, And a caulking piece constituting the first barrel portion and the second barrel portion and extending in pairs from both side edges in the width direction of the bottom plate portion, the bottom plate portion being raised to the base portion It may be in the form. According to this configuration, the height difference between the lower surface of the base portion of the terminal main body portion and the lower surface of the region surrounding the first barrel portion and the second barrel portion of the mold portion can be reduced or eliminated. Therefore, even if the shape of the inner wall of the terminal accommodating chamber is flat, the terminal fitting can be accommodated in the terminal accommodating chamber in a stable posture.
　第１及び第２の発明は、前記第２バレル部における前記芯線の断面積が、前記第１バレル部における前記芯線の断面積よりも大きくてもよい。この構成によれば、第１バレル部では、芯線への圧着力が強いので、高い接触信頼性を確保することができる。また、端子金具の後方において被覆電線の曲げ変形が繰り返されると、芯線が、第２バレル部の後端縁への食い込みによって破損することが懸念される。しかし、第２バレル部では芯線への圧着力を第１バレル部よりも弱くしているので、第２バレル部の後端縁に対する芯線の食い込みが緩和される。これにより、芯線の破損を防止することができる。 In the first and second inventions, a cross-sectional area of the core wire in the second barrel portion may be larger than a cross-sectional area of the core wire in the first barrel portion. According to this structure, in the 1st barrel part, since the crimping force to a core wire is strong, high contact reliability can be ensured. Moreover, if the bending deformation of the covered electric wire is repeated behind the terminal fitting, there is a concern that the core wire may be damaged by biting into the rear end edge of the second barrel portion. However, since the crimping force to the core wire is weaker than that of the first barrel portion in the second barrel portion, biting of the core wire into the rear end edge of the second barrel portion is alleviated. Thereby, breakage of a core wire can be prevented.
　第１及び第２の発明は、前記第１バレル部を構成する前記カシメ片には、後方に向かって拡径した拡径部が形成されていてもよい。第１バレル部において芯線への圧着力を強めて接触信頼性を高めた場合、芯線が、第１バレル部の後端縁に対し芯線が食い込んで破損することが懸念される。しかし、上記構成によれば、拡径部を形成したことにより、第１バレル部の後端縁に対する芯線の食い込みが緩和されるので、芯線の破損を防止することができる。 In the first and second inventions, the caulking piece constituting the first barrel part may be formed with a diameter-enlarged part that is enlarged toward the rear. When the contact pressure is increased by increasing the crimping force to the core wire in the first barrel portion, there is a concern that the core wire may bite into the rear end edge of the first barrel portion and break. However, according to the said structure, since the encroachment of the core wire with respect to the rear-end edge of a 1st barrel part is relieve | moderated by forming the enlarged diameter part, damage to a core wire can be prevented.
　第１及び第２の発明は、前記第２バレル部を構成する前記カシメ片には、後方に向かって拡径した拡径部が形成されていてもよい。端子金具の後方において被覆電線の曲げ変形が繰り返されると、芯線が、第２バレル部の後端縁への食い込みによって破損することが懸念される。しかし、上記構成によれば、拡径部を形成したことにより、第２バレル部の後端縁に対する芯線の食い込みが緩和されるので、芯線の破損を防止することができる。 In the first and second aspects of the present invention, the caulking piece constituting the second barrel portion may be formed with an enlarged diameter portion that is enlarged toward the rear. When the bending deformation of the covered electric wire is repeated behind the terminal fitting, there is a concern that the core wire is damaged by biting into the rear end edge of the second barrel portion. However, according to the said structure, since the encroachment of the core wire with respect to the rear-end edge of a 2nd barrel part is relieve | moderated by forming the enlarged diameter part, damage to a core wire can be prevented.
　第１及び第２の発明は、前記モールド部のうち前記ハウジング外へ突出した突出部に形成され、前記突出部の剛性を高める補強部を備えていてもよい。この構成によれば、モールド部のうちハウジング外へ突出した突出部の剛性を補強部によって高めているので、モールド部の突出部が変形し難くなっている。これにより、モールド部よりも後方における被覆電線の曲げの影響が端子金具と芯線との圧着部分に及ぶのを、より確実に阻止又は抑制できる。 1st and 2nd invention may be provided in the protrusion part which protruded out of the said housing among the said mold parts, and may be provided with the reinforcement part which raises the rigidity of the said protrusion part. According to this structure, since the rigidity of the protrusion part which protruded out of the housing among mold parts is improved by the reinforcement part, the protrusion part of a mold part becomes difficult to deform | transform. Thereby, it can prevent or suppress more reliably that the influence of the bending of the covered electric wire behind a mold part reaches the crimping | compression-bonding part of a terminal metal fitting and a core wire.
　第１及び第２の発明は、前記モールド部のうち前記ハウジング外へ突出した前記突出部の肉厚を、前記モールド部のうち前記端子収容室内に収容されている収容部の肉厚よりも厚くすることで、前記補強部が構成されていてもよい。この構成によれば、モールド部の形状を複雑にしなくても、モールド部の剛性を高めることができる。 According to the first and second aspects of the present invention, the thickness of the protruding portion that protrudes out of the housing out of the mold portion is thicker than the thickness of the accommodating portion that is accommodated in the terminal accommodating chamber of the mold portion. By doing so, the said reinforcement part may be comprised. According to this configuration, the rigidity of the mold part can be increased without complicating the shape of the mold part.
　＜実施例１＞
　以下、本発明を具体化した実施例１を図１～図９を参照して説明する。尚、以下の説明において、前後方向については、図３，５，６における右方を前方と定義する。上下方向については、図２，３，５，６にあらわれる向きを、そのまま上方、下方と定義する。 <Example 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. In the following description, with respect to the front-rear direction, the right side in FIGS. As for the vertical direction, the directions appearing in FIGS. 2, 3, 5 and 6 are defined as “upper” and “lower” as they are.
　本実施例のコネクタＡは、端子付き電線１０と、ハウジング３５とを備えて構成されている。端子付き電線１０は、被覆電線１１と、端子金具１５と、モールド部３０とを一体化した形態であり、全体として前後方向に細長い導電路を構成する。被覆電線１１は、アルミニウム製又はアルミニウム合金製の芯線１２と、芯線１２を包囲する略円筒状の絶縁被覆１３とから構成されている。尚、芯線１２は複数本の素線を束ねた形態であるが、図３，６，８では便宜上、素線の図示は省略している。被覆電線１１の前端部においては、絶縁被覆１３が所定長さ分だけ剥き取られ、芯線１２が露出している。この芯線１２の露出部１４の前端部には、後述する端子金具１５が圧着により接続されている。 The connector A of the present embodiment is configured to include the electric wire with terminal 10 and the housing 35. The terminal-attached electric wire 10 is a form in which the covered electric wire 11, the terminal fitting 15, and the molded part 30 are integrated, and constitutes a conductive path that is elongated in the front-rear direction as a whole. The covered electric wire 11 is composed of a core wire 12 made of aluminum or an aluminum alloy and a substantially cylindrical insulating coating 13 surrounding the core wire 12. Although the core wire 12 has a form in which a plurality of strands are bundled, the strands are not shown in FIGS. At the front end portion of the covered electric wire 11, the insulating coating 13 is peeled off by a predetermined length, and the core wire 12 is exposed. A terminal fitting 15 described later is connected to the front end of the exposed portion 14 of the core wire 12 by crimping.
　端子金具１５は、所定形状に打ち抜いた銅製又は銅合金製の板材に曲げ加工等を施して成形したものであり、全体として前後方向に細長い形状をなしている。図７，８に示すように、端子金具１５は、その前端側領域を構成する端子本体部１６と、後端側領域を構成する第１バレル部２３Ｆ及び第２バレル部２３Ｒとから構成されている。 The terminal fitting 15 is formed by bending a copper or copper alloy plate material punched into a predetermined shape, and has an elongated shape in the front-rear direction as a whole. As shown in FIGS. 7 and 8, the terminal fitting 15 is composed of a terminal main body portion 16 constituting the front end side region, and a first barrel portion 23F and a second barrel portion 23R constituting the rear end side region. Yes.
　端子本体部１６は、角筒形をなす箱状接続部１７と、箱状接続部１７の後端に連なる連結部１８とから構成されている。箱状接続部１７には、端子金具１５の前方から、雄形をなす相手側端子（図示省略）のタブが挿入されて接続されるようになっている。連結部１８は、底壁部１９の左右両側縁から一対の側壁部２０を立ち上げた形態である。連結部１８の底壁部１９は、箱状接続部１７の下壁部２１と面一状に連なっており、底壁部１９と下壁部２１は、端子本体部１６の基底部２２を構成している。 The terminal body 16 is composed of a box-shaped connecting portion 17 having a rectangular tube shape and a connecting portion 18 connected to the rear end of the box-shaped connecting portion 17. A tab of a mating terminal (not shown) having a male shape is inserted into and connected to the box-shaped connecting portion 17 from the front of the terminal fitting 15. The connecting portion 18 has a form in which a pair of side wall portions 20 are raised from the left and right side edges of the bottom wall portion 19. The bottom wall portion 19 of the connecting portion 18 is continuous with the lower wall portion 21 of the box-like connecting portion 17, and the bottom wall portion 19 and the lower wall portion 21 constitute a base portion 22 of the terminal main body portion 16. is doing.
　第１バレル部２３Ｆは、前後方向に細長い底板部２４と、一対の第１カシメ片２７Ｆ（請求項に記載のカシメ片）とから構成されている。一対の第１カシメ片２７Ｆは、底板部２４の幅方向（左右方向）における両側縁のうち、前端側領域から周方向（端子金具１５長さ方向と交差する方向）に延出した形態である。第２バレル部２３Ｒは、上記底板部２４と、一対の第２カシメ片２７Ｒ（請求項に記載のカシメ片）とから構成されている。一対の第２カシメ片２７Ｒは、底板部２４の幅方向（左右方向）における両側縁のうち、後端側領域から周方向（端子金具１５長さ方向と交差する方向）に延出した形態である。 The first barrel portion 23F includes a bottom plate portion 24 elongated in the front-rear direction and a pair of first caulking pieces 27F (the caulking pieces described in claims). The pair of first caulking pieces 27 </ b> F extend from the front end side region in the circumferential direction (direction intersecting with the length direction of the terminal fitting 15) among both side edges in the width direction (left-right direction) of the bottom plate portion 24. . The second barrel portion 23R includes the bottom plate portion 24 and a pair of second caulking pieces 27R (the caulking pieces described in claims). The pair of second caulking pieces 27 </ b> R extend in the circumferential direction (the direction intersecting the length direction of the terminal fitting 15) from the rear end side region of both side edges in the width direction (left-right direction) of the bottom plate portion 24. is there.
　第１バレル部２３Ｆと第２バレル部２３Ｒは前後に並ぶように配され、第２バレル部２３Ｒは第１バレル部２３Ｆの後方（つまり、端子金具１５の後端部）に配置されている。両バレル部２３Ｆ，２３Ｒの底板部２４は、同じ高さで面一状に連続している。この底板部２４の前端部は、端子本体部１６の基底部２２の後端部に対し段差状に連なっている。つまり、底板部２４は、その全長に亘る領域が、基底部２２に対して嵩上げされた形態となっている。 The first barrel portion 23F and the second barrel portion 23R are arranged so as to be aligned in the front-rear direction, and the second barrel portion 23R is disposed behind the first barrel portion 23F (that is, the rear end portion of the terminal fitting 15). The bottom plate parts 24 of both the barrel parts 23F and 23R are continuously flush with each other at the same height. The front end portion of the bottom plate portion 24 is connected to the rear end portion of the base portion 22 of the terminal body portion 16 in a step shape. That is, the bottom plate part 24 has a shape in which a region extending over the entire length is raised with respect to the base part 22.
　両バレル部２３Ｆ，２３Ｒは、アプリケータと称される自動機（図示省略）により、絶縁被覆１３と非接触の状態で芯線１２の露出部１４の外周に圧着される。このとき、第１バレル部２３Ｆは、芯線１２の露出部１４における前端側領域に圧着され、第２バレル部２３Ｒは、芯線１２の露出部１４における後端側領域に圧着される。 Both barrel portions 23F and 23R are crimped to the outer periphery of the exposed portion 14 of the core wire 12 in a non-contact state with the insulating coating 13 by an automatic machine (not shown) called an applicator. At this time, the first barrel portion 23F is crimped to the front end side region of the exposed portion 14 of the core wire 12, and the second barrel portion 23R is crimped to the rear end side region of the exposed portion 14 of the core wire 12.
　圧着工程では、底板部２４に載置された芯線１２の露出部１４に対し、対をなす第１カシメ片２７Ｆ及び第２カシメ片２７Ｒが包囲するように曲げ変形させられる。これにより、芯線１２の露出部１４と端子金具１５の両バレル部２３Ｆ，２３Ｒとが導通可能に固着される。圧着状態では、被覆電線１１の前端部と端子金具１５がほぼ一直線状に連なった形態となる。 In the crimping process, the exposed portion 14 of the core wire 12 placed on the bottom plate portion 24 is bent and deformed so as to surround the first caulking piece 27F and the second caulking piece 27R that make a pair. Thereby, the exposed part 14 of the core wire 12 and both barrel parts 23F and 23R of the terminal metal fitting 15 are fixed so as to be conductive. In the crimped state, the front end portion of the covered electric wire 11 and the terminal fitting 15 are connected in a substantially straight line.
　また、第１バレル部２３Ｆにおける芯線１２の圧縮率（芯線１２の圧着前の断面積に対する圧着後の断面積の比）は、例えば５０～８０％程度であり、第２バレル部２３Ｒにおける芯線１２の圧縮率は、例えば７０～１００％である。いずれの圧縮率においても、第１バレル部２３Ｆの圧縮率の値は第２バレル部２３Ｒよりも小さい。つまり、第１バレル部２３Ｆの断面積、高さ寸法及び幅寸法は、第２バレル部２３Ｒの断面積、高さ寸法及び幅寸法よりも小さい。 Further, the compression rate of the core wire 12 in the first barrel portion 23F (ratio of the cross-sectional area after crimping to the cross-sectional area before crimping of the core wire 12) is, for example, about 50 to 80%, and the core wire 12 in the second barrel portion 23R. The compression ratio is, for example, 70 to 100%. At any compression rate, the value of the compression rate of the first barrel portion 23F is smaller than that of the second barrel portion 23R. That is, the cross-sectional area, height dimension, and width dimension of the first barrel portion 23F are smaller than the cross-sectional area, height dimension, and width dimension of the second barrel portion 23R.
　この両バレル部２３Ｆ，２３Ｒにおける圧縮率の相違は、次の理由による。前側（芯線１２の先端側）に圧着される第１バレル部２３Ｆは、芯線１２と端子金具１５との接触圧を高めて接触信頼性を確保する機能を担う。したがって、第１バレル部２３Ｆにおける芯線１２の圧縮率を小さくし、第１バレル部２３Ｆと芯線１２との接触圧（密着度）を強めている。 The difference in compression ratio between the barrel portions 23F and 23R is due to the following reason. The first barrel portion 23F that is crimped to the front side (the front end side of the core wire 12) has a function of increasing contact pressure between the core wire 12 and the terminal fitting 15 to ensure contact reliability. Therefore, the compression rate of the core wire 12 in the first barrel portion 23F is reduced, and the contact pressure (adhesion degree) between the first barrel portion 23F and the core wire 12 is increased.
　一方、第２バレル部２３Ｒは、端子金具１５の後方において被覆電線１１が上下左右に曲げられたときに、その曲げの影響が第１バレル部２３Ｆと芯線１２との接触部分に及ばないようにするための役割を担う。被覆電線１１が曲げられると、芯線１２の露出部１４が第２バレル部２３Ｒの後端縁に押し付けられるため、第２バレル部２３Ｒが芯線１２を強く締め込んでしまうと、芯線１２の外周が傷付けられたり破損したりすることが懸念される。そのため、第２バレル部２３Ｒでは、圧縮率を第１バレル部２３Ｆより大きくして、芯線１２への締付けを緩和している。 On the other hand, when the covered electric wire 11 is bent up and down and left and right behind the terminal fitting 15, the second barrel portion 23 </ b> R is prevented from affecting the contact portion between the first barrel portion 23 </ b> F and the core wire 12. To play a role. When the covered electric wire 11 is bent, the exposed portion 14 of the core wire 12 is pressed against the rear end edge of the second barrel portion 23R. Therefore, when the second barrel portion 23R strongly tightens the core wire 12, the outer periphery of the core wire 12 is There is concern about being damaged or damaged. Therefore, in the 2nd barrel part 23R, the compression rate is made larger than the 1st barrel part 23F, and the tightening to the core wire 12 is eased.
　圧着工程では、第１カシメ片２７Ｆの後端部に周方向に沿った第１拡径部２８Ｆ（請求項に記載の拡径部）が形成される。第１拡径部２８Ｆは、後方に向かって径寸法が増大するように拡がった形状である。上述のように第１バレル部２３Ｆでは、芯線１２の圧縮率が小さいので、芯線１２の外周に対する第１バレル部２３Ｆの後端縁の食い込みが強く、芯線１２を傷付けることが懸念される。そこで、第１バレル部２３Ｆの後端縁部に第１拡径部２８Ｆを形成することにより、芯線１２の外周に対する第１バレル部２３Ｆの後端縁部の食い込みを緩和している。 In the crimping process, the first enlarged diameter portion 28F (the enlarged diameter portion described in the claims) along the circumferential direction is formed at the rear end portion of the first caulking piece 27F. The first enlarged-diameter portion 28F has a shape expanded so that the diameter increases toward the rear. As described above, since the compression rate of the core wire 12 is small in the first barrel portion 23F, the biting of the rear end edge of the first barrel portion 23F with respect to the outer periphery of the core wire 12 is strong, and there is a concern that the core wire 12 may be damaged. Therefore, by forming the first enlarged diameter portion 28F at the rear end edge portion of the first barrel portion 23F, the biting of the rear end edge portion of the first barrel portion 23F with respect to the outer periphery of the core wire 12 is alleviated.
　第２カシメ片２７Ｒの後端部にも周方向に沿った第２拡径部２８Ｒ（請求項に記載の拡径部）が形成される。第２拡径部２８Ｒも、第１拡径部２８Ｆと同様に、後方に向かって径寸法が増大するように拡がった形状である。端子金具１５の後方で被覆電線１１が上下左右に大きく曲げられたり、その曲げ変形が繰り返されたりすると、芯線１２が、第バレル部２３Ｒの後端縁部に食い込むことになって、傷付けられることが懸念される。第２拡径部２８Ｒは、この対策して形成されたものである。第２拡径部２８Ｒを形成したことにより、第２バレル部２３Ｒの後端縁に対する芯線１２の食い込みが緩和されるので、芯線１２の破損を防止することができる。 The second enlarged portion 28R (the enlarged portion described in the claims) along the circumferential direction is also formed at the rear end portion of the second crimping piece 27R. Similarly to the first enlarged-diameter portion 28F, the second enlarged-diameter portion 28R has a shape that expands toward the rear so that the diameter dimension increases. If the covered electric wire 11 is greatly bent up and down, left and right behind the terminal fitting 15 or if its bending deformation is repeated, the core wire 12 will bite into the rear edge of the first barrel portion 23R and be damaged. Is concerned. The second enlarged diameter portion 28R is formed as a countermeasure against this. By forming the second enlarged diameter portion 28R, the bite of the core wire 12 with respect to the rear end edge of the second barrel portion 23R is alleviated, so that the core wire 12 can be prevented from being damaged.
　モールド部３０は、芯線１２に端子金具１５を圧着した後に成形される。モールド部３０の成形は、周知の金型（図示省略）内に両バレル部２３Ｆ，２３Ｒの全体と、連結部１８の後端部と、被覆電線１１における絶縁被覆１３の前端部とを収容し、金型の内部に溶融樹脂（図示省略）を注入し、注入した溶融樹脂を固化（硬化）させることによって行われる。 The mold part 30 is formed after the terminal fitting 15 is pressure-bonded to the core wire 12. Molding of the mold part 30 accommodates the entire barrel parts 23F and 23R, the rear end part of the connecting part 18 and the front end part of the insulating coating 13 in the covered electric wire 11 in a known mold (not shown). The molten resin (not shown) is injected into the mold, and the injected molten resin is solidified (cured).
　図６に示すように、成形後のモールド部３０は、両バレル部２３Ｆ，２３Ｒの全体と、芯線１２のうち両バレル部２３Ｆ，２３Ｒとの圧着部を含む露出部１４の全体と、被覆電線１１のうち絶縁被覆１３が残存する領域の前端部とを全周に亘り液密状に包囲している。また、モールド部３０の前端部の一部は、第１バレル部２３Ｆよりも前方において連結部１８の内部に収容されている。モールド部３０のうち両バレル部２３Ｆ，２３Ｒの底板部２４を覆う底部領域の下面（外面）は、端子本体部１６の基底部２２の下面（外面）とほぼ同じ高さ、詳しくは、基底部２２の下面より僅かに高い位置となっている。 As shown in FIG. 6, the molded mold part 30 includes the whole barrel parts 23 </ b> F and 23 </ b> R, the entire exposed part 14 including the crimped part between the barrel parts 23 </ b> F and 23 </ b> R of the core wire 12, and the covered electric wire. 11, the front end portion of the region where the insulating coating 13 remains is surrounded in a liquid-tight manner over the entire circumference. Further, a part of the front end portion of the mold portion 30 is accommodated in the connecting portion 18 in front of the first barrel portion 23F. The lower surface (outer surface) of the bottom region that covers the bottom plate portions 24 of both barrel portions 23F and 23R in the mold portion 30 is substantially the same height as the lower surface (outer surface) of the base portion 22 of the terminal body portion 16, more specifically, the base portion The position is slightly higher than the lower surface of 22.
　図３に示すように、被覆電線１１の前端部と端子金具１５とモールド部３０が一体化された端子付き電線１０は、ハウジング３５の後方から端子収容室３６内に挿入されている。挿入状態では、端子金具１５の全体と、芯線１２の露出部１４のうち後端部を除いた大部分とが端子収容室３６内に収容されている。したがって、被覆電線１１のうち絶縁被覆１３が芯線１２を包囲している領域は、その全体が端子収容室３６（ハウジング３５）の外部に配されている。 As shown in FIG. 3, the terminal-attached electric wire 10 in which the front end portion of the covered electric wire 11, the terminal fitting 15 and the mold portion 30 are integrated is inserted into the terminal accommodating chamber 36 from the rear of the housing 35. In the inserted state, the entire terminal fitting 15 and most of the exposed portion 14 of the core wire 12 excluding the rear end portion are accommodated in the terminal accommodating chamber 36. Therefore, the entire region of the covered wire 11 in which the insulating coating 13 surrounds the core wire 12 is arranged outside the terminal accommodating chamber 36 (housing 35).
　モールド部３０のうち端子収容室３６内に収容されて端子金具１５の全体と芯線１２の露出部１４を液密状に包囲する領域は収容部３１となっている。モールド部３０のうち、端子収容室３６（ハウジング３５）の後方外部において芯線１２の露出部１４の後端部と絶縁被覆１３の前端部とを液密状に包囲する領域は、突出部３２となっている。モールド部３０の突出部３２は、被覆電線１１のうちモールド部３０よりも後方の領域が上下に曲げられたときに、その曲げの影響を端子金具１５側へ伝わるのを抑制する機能を有している。 A region of the mold portion 30 that is housed in the terminal housing chamber 36 and surrounds the entire terminal fitting 15 and the exposed portion 14 of the core wire 12 in a liquid-tight manner is a housing portion 31. In the mold portion 30, a region surrounding the rear end portion of the exposed portion 14 of the core wire 12 and the front end portion of the insulating coating 13 outside the rear of the terminal accommodating chamber 36 (housing 35) in a liquid-tight manner is the protruding portion 32. It has become. The protruding part 32 of the mold part 30 has a function of suppressing the transmission of the influence of the bending to the terminal fitting 15 side when a region behind the mold part 30 of the covered electric wire 11 is bent up and down. ing.
　即ち、モールド部３０の突出部３２には、モールド部３０の上下方向の曲げ剛性を高める為の補強手段として、上下一対の補強部３４が形成されている。補強部３４は、突出量域のほぼ全長に亘り、絶縁被覆１３の上面側の厚さと絶縁被覆１３の下面側の厚さを、収容部３１の厚さよりも厚くした形態である。つまり、補強部３４（突出部３２）では、モールド部３０の高さ寸法が収容部３１よりも大きい。尚、補強部３４（突出部３２）の幅寸法は、収容部３１の幅寸法と同じである。 That is, a pair of upper and lower reinforcing portions 34 is formed on the protruding portion 32 of the mold portion 30 as reinforcing means for increasing the bending rigidity in the vertical direction of the mold portion 30. The reinforcing portion 34 has a form in which the thickness of the upper surface side of the insulating coating 13 and the thickness of the lower surface side of the insulating coating 13 are made larger than the thickness of the housing portion 31 over substantially the entire length of the protruding amount region. In other words, the height dimension of the mold part 30 is larger than that of the accommodating part 31 in the reinforcing part 34 (projecting part 32). In addition, the width dimension of the reinforcement part 34 (projection part 32) is the same as the width dimension of the accommodating part 31. FIG.
　上述のように本実施例１のコネクタＡは、複数の端子収容室３６が形成されたハウジング３５と、各端子収容室３６に個別に挿入される複数の端子付き電線１０とを備えている。端子付き電線１０は、被覆電線１１と端子金具１５とモールド部３０とを備えている。被覆電線１１は、芯線１２と、芯線１２を包囲する絶縁被覆１３とを有していて、被覆電線１１の前端側（被覆電線１１の前端から所定の長さ範囲）では、芯線１２が露出されている。端子金具１５の後端部には、芯線１２の露出部１４に対し包囲するように圧着された第１バレル部２３Ｆ及び第２バレル部２３Ｒが形成されている。第２バレル部２３Ｒは、第１バレル部２３Ｆの後方であり且つ絶縁被覆１３よりも前方の位置に配置されている。したがって、第１バレル部２３Ｆ及び第２バレル部２３Ｒは、絶縁被覆１３と非接触である。 As described above, the connector A of the first embodiment includes the housing 35 in which the plurality of terminal accommodating chambers 36 are formed, and the plurality of terminal-attached electric wires 10 that are individually inserted into the terminal accommodating chambers 36. The terminal-attached electric wire 10 includes a covered electric wire 11, a terminal fitting 15, and a mold part 30. The covered electric wire 11 has a core wire 12 and an insulating coating 13 surrounding the core wire 12, and the core wire 12 is exposed on the front end side of the covered electric wire 11 (a predetermined length range from the front end of the covered electric wire 11). ing. A first barrel portion 23 </ b> F and a second barrel portion 23 </ b> R are formed on the rear end portion of the terminal fitting 15 so as to surround the exposed portion 14 of the core wire 12. The second barrel portion 23 </ b> R is disposed behind the first barrel portion 23 </ b> F and ahead of the insulating coating 13. Therefore, the first barrel portion 23F and the second barrel portion 23R are not in contact with the insulating coating 13.
　モールド部３０は、被覆電線１１の前端部（即ち、芯線１２のうち両バレル部２３Ｆ，２３Ｒとの圧着部を含む露出部１４の全体と、絶縁被覆１３の前端部と）を液密状に覆っている。芯線１２はアルミニウム又はアルミニウム合金製であるのに対し、端子金具１５は銅又は銅合金製であることから、芯線１２と端子金具１５（両バレル部２３Ｆ，２３Ｒ）との接触部分における防食手段として、芯線１２と端子金具１５（両バレル部２３Ｆ，２３Ｒ）との接触部分を合成樹脂製のモールド部３０で液密状に包囲している。 The mold part 30 liquid-tightens the front end part of the covered electric wire 11 (that is, the entire exposed part 14 including the crimped part with both the barrel parts 23F and 23R of the core wire 12 and the front end part of the insulating coating 13). Covering. Since the core wire 12 is made of aluminum or an aluminum alloy, the terminal fitting 15 is made of copper or a copper alloy. Therefore, as the anticorrosion means in the contact portion between the core wire 12 and the terminal fitting 15 (both barrel portions 23F and 23R). The contact portion between the core wire 12 and the terminal fitting 15 (both barrel portions 23F, 23R) is surrounded in a liquid-tight manner by a mold portion 30 made of synthetic resin.
　絶縁被覆１３の外径は芯線１２の外径より大きいため、モールド部３０のうち絶縁被覆１３を包囲する領域（突出部３２）の外径は、モールド部３０のうち芯線１２を包囲する領域（収容部３１）よりも大きくなる。この点に鑑みて、端子金具１５の後端部に形成した２つのバレル部２３Ｆ，２３Ｒは、いずれも絶縁被覆１３の外周を包囲せず、芯線１２の露出部１４の外周を包囲する形態となっている。つまり、前側に位置する第１バレル部２３は、従来のワイヤバレル部と同じく端子金具１５と芯線１２との導通を確保する手段しての機能を有する。 Since the outer diameter of the insulating coating 13 is larger than the outer diameter of the core wire 12, the outer diameter of the region (protruding portion 32) surrounding the insulating coating 13 in the mold portion 30 is the region surrounding the core wire 12 in the mold portion 30 ( It becomes larger than the accommodating part 31). In view of this point, the two barrel portions 23F and 23R formed at the rear end portion of the terminal fitting 15 do not surround the outer periphery of the insulating coating 13, and surround the outer periphery of the exposed portion 14 of the core wire 12. It has become. That is, the 1st barrel part 23 located in the front side has the function as a means to ensure conduction | electrical_connection with the terminal metal fitting 15 and the core wire 12 similarly to the conventional wire barrel part.
　一方、後側に位置する第２バレル部２３Ｒの役割は、従来のインシュレーションバレル部と同様、被覆電線１１の曲げの影響が第１バレル部２３Ｆ（従来のワイヤバレル部）に及ぶのを防止又は抑制することである。しかしながら、第２バレル部２３は、絶縁被覆１３ではなく、芯線１２を包囲しているので、絶縁被覆１３の外周を包囲する場合に比べると、絶縁被覆１３の厚さ分だけ外径が小さくなっている。 On the other hand, the role of the second barrel portion 23R located on the rear side prevents the influence of the bending of the covered electric wire 11 from reaching the first barrel portion 23F (conventional wire barrel portion), as in the conventional insulation barrel portion. Or to suppress. However, since the second barrel portion 23 surrounds the core wire 12 instead of the insulating coating 13, the outer diameter is reduced by the thickness of the insulating coating 13 as compared to the case where the outer periphery of the insulating coating 13 is surrounded. ing.
　端子付き電線１０のうち端子収容室３６に収容するのは、端子金具１５の全体と、モールド部３０の前端部（即ち、モールド部３０のうち絶縁被覆１３の前端よりも前方の領域のみ）としている。つまり、端子収容室３６内には、絶縁被覆１３は収容されていない。これにより、端子収容室３６の容積（高さ寸法や幅寸法）を拡大しなくても、モールド部３０のうち端子金具１５を包囲する領域全体を端子収容室３６内に収容することができた。 Of the electric wire with terminal 10, the terminal housing chamber 36 accommodates the entire terminal fitting 15 and the front end portion of the mold portion 30 (that is, only the region in front of the front end of the insulating coating 13 in the mold portion 30). Yes. That is, the insulating coating 13 is not accommodated in the terminal accommodating chamber 36. Thereby, the entire region surrounding the terminal fitting 15 in the mold part 30 could be accommodated in the terminal accommodating chamber 36 without increasing the volume (height dimension or width dimension) of the terminal accommodating chamber 36. .
　そして、第２バレル部２３Ｒは、第１バレル部２３Ｆの後方において芯線１２の露出部１４に圧着されているので、端子金具１５よりも後方において被覆電線１１が曲げ変形しても、第２バレル部２３Ｒでは芯線１２の変形が阻止又は抑制される。したがって、被覆電線１１の曲げの影響が第１バレル部２３Ｆと芯線１２との圧着部分に及ぶことを阻止又は抑制することができる。 And since the 2nd barrel part 23R is crimped | bonded by the exposed part 14 of the core wire 12 behind the 1st barrel part 23F, even if the covered electric wire 11 bends and deform | transforms behind the terminal metal fitting 15, it is 2nd barrel. In the portion 23R, the deformation of the core wire 12 is prevented or suppressed. Therefore, it is possible to prevent or suppress the influence of bending of the covered electric wire 11 from reaching the crimped portion between the first barrel portion 23F and the core wire 12.
　また、第２バレル部２３Ｒにおける芯線１２の断面積が、第１バレル部２３Ｆにおける芯線１２の断面積よりも大きくなっている。この構成によれば、第１バレル部２３Ｆでは、芯線１２への圧着力が強いので、高い接触信頼性を確保することができる。また、端子金具１５の後方において被覆電線１１の曲げ変形が繰り返されると、芯線１２が、第２バレル部２３Ｒの後端縁への食い込みによって破損することが懸念される。しかし、第２バレル部２３Ｒでは芯線１２への圧着力を第１バレル部２３Ｆよりも弱くしているので、第２バレル部２３Ｒの後端縁に対する芯線１２の食い込みが緩和される。これにより、芯線１２の破損を防止することができる。 Moreover, the cross-sectional area of the core wire 12 in the second barrel portion 23R is larger than the cross-sectional area of the core wire 12 in the first barrel portion 23F. According to this configuration, in the first barrel portion 23F, since the crimping force to the core wire 12 is strong, high contact reliability can be ensured. Moreover, if the bending deformation of the covered electric wire 11 is repeated behind the terminal fitting 15, there is a concern that the core wire 12 may be damaged by biting into the rear end edge of the second barrel portion 23 </ b> R. However, since the crimping force to the core wire 12 is weaker than that of the first barrel portion 23F in the second barrel portion 23R, the biting of the core wire 12 with respect to the rear end edge of the second barrel portion 23R is alleviated. Thereby, breakage of the core wire 12 can be prevented.
　モールド部３０のうちハウジング３５外へ突出した突出部３２には、その剛性を高めるための手段として補強部３４が設けられている。補強部３４は、モールド部３０のうちハウジング３５外への突出部３２の上下方向の肉厚を、モールド部３０のうち端子収容室３６内に収容されている収容部３１の上下方向の肉厚よりも厚くした形態である。この構成によれば、モールド部３０の形状を複雑にしなくても、突出部３２の上下方向への曲げ剛性を高めることができる。このようにモールド部３０の突出部３２の曲げ剛性を高めたので、突出部３２が変形し難くなっている。これにより、モールド部３０の後方において被覆電線１１が曲げられても、その被覆電線１１の曲げの影響が第１バレル部２３Ｆに伝わり難くなっている。 The projecting portion 32 projecting out of the housing 35 in the mold portion 30 is provided with a reinforcing portion 34 as a means for increasing its rigidity. The reinforcing portion 34 has a thickness in the vertical direction of the protruding portion 32 outside the housing 35 in the mold portion 30, and a thickness in the vertical direction of the accommodating portion 31 accommodated in the terminal accommodating chamber 36 in the mold portion 30. This is a thicker form. According to this configuration, the bending rigidity in the vertical direction of the protruding portion 32 can be increased without complicating the shape of the mold portion 30. Thus, since the bending rigidity of the protrusion part 32 of the mold part 30 was improved, the protrusion part 32 becomes difficult to deform | transform. Thereby, even if the covered electric wire 11 is bent behind the mold part 30, the influence of the bending of the covered electric wire 11 is hardly transmitted to the first barrel part 23F.
　また、端子金具１５の両バレル部２３Ｆ，２３Ｒは、底板部２４と対をなすカシメ片２７Ｆ，２７Ｒとを備えて構成されている。底板部２４は、端子本体部１６の基底部２２に連なっており、カシメ片２７Ｆ，２７Ｒは、底板部２４の幅方向両側縁から対をなして延出している。バレル部２３Ｆ，２３Ｒは、底板部２４に載置された芯線１２に対し、その外周をカシメ片２７Ｆ，２７Ｒで包囲するようにして圧着接続されている。このバレル部２３Ｆ，２３Ｒはモールド部３０により全周に亘って包囲されているが、端子金具１５のうちバレル部２３Ｆ，２３Ｒよりも前方の端子本体部１６の大部分は、モールド部３０で覆われていない。バレル部２３Ｆ，２３Ｒを含む端子金具１５の全体は、ハウジング３５の端子収容室３６内に収容されている。 Further, both barrel portions 23F and 23R of the terminal fitting 15 are configured to include caulking pieces 27F and 27R which are paired with the bottom plate portion 24. The bottom plate portion 24 is connected to the base portion 22 of the terminal main body portion 16, and the crimping pieces 27 </ b> F and 27 </ b> R extend in pairs from both side edges in the width direction of the bottom plate portion 24. The barrel portions 23F and 23R are crimped and connected to the core wire 12 placed on the bottom plate portion 24 so that the outer periphery thereof is surrounded by the crimping pieces 27F and 27R. The barrel portions 23F and 23R are surrounded by the mold portion 30 over the entire circumference, but most of the terminal body portion 16 in front of the barrel portions 23F and 23R of the terminal fitting 15 is covered with the mold portion 30. I have not been told. The entire terminal fitting 15 including the barrel portions 23 </ b> F and 23 </ b> R is accommodated in the terminal accommodating chamber 36 of the housing 35.
　上記のようにモールド部３０は、バレル部２３Ｆ，２３Ｒの底板部２４を覆っているが、端子本体部１６の基底部２２は覆っていない。そのため、基底部２２の外面とモールド部３０のうちバレル部２３Ｆ，２３Ｒを覆う領域の外面との間に段差が生じることが懸念される。このような段差が生じると、端子金具１５を端子収容室３６に収容したときに、基底部２２の外面と端子収容室３６の内壁面との間に隙間が生じ、端子収容室３６内における端子金具１５の姿勢が不安定になることが懸念される。 As described above, the mold part 30 covers the bottom plate part 24 of the barrel parts 23F and 23R, but does not cover the base part 22 of the terminal body part 16. Therefore, there is a concern that a step is generated between the outer surface of the base portion 22 and the outer surface of the mold portion 30 that covers the barrel portions 23F and 23R. When such a level difference occurs, a gap is generated between the outer surface of the base portion 22 and the inner wall surface of the terminal accommodating chamber 36 when the terminal fitting 15 is accommodated in the terminal accommodating chamber 36. There is a concern that the posture of the metal fitting 15 becomes unstable.
　そこで、バレル部２３Ｆ，２３Ｒの底板部２４を、端子本体部１６の基底部２２に対して底上げした形態としている。この構成によれば、端子本体部１６の剥き出しになっている基底部２２の下面と、モールド部３０のうちバレル部２３Ｆ，２３Ｒを包囲する領域の下面との間の高低差を小さく、又は解消できる。したがって、端子収容室３６の内壁の形状がフラットであっても、端子金具１５を安定した姿勢で端子収容室３６内に収容することができる。 Therefore, the bottom plate portions 24 of the barrel portions 23F and 23R are raised with respect to the base portion 22 of the terminal body portion 16. According to this configuration, the difference in height between the lower surface of the base portion 22 that is exposed from the terminal body portion 16 and the lower surface of the region surrounding the barrel portions 23F and 23R in the mold portion 30 is reduced or eliminated. it can. Therefore, even if the shape of the inner wall of the terminal accommodating chamber 36 is flat, the terminal fitting 15 can be accommodated in the terminal accommodating chamber 36 in a stable posture.
　＜実施例２＞
　次に、本発明を具体化した実施例２を図１０を参照して説明する。本実施例２のコネクタＢは、端子付き電線４０を構成するモールド部４１と、ハウジング４５を上記実施例１とは異なる構成としたものである。その他の構成については上記実施例１と同じであるため、同じ構成については、同一符号を付し、構造、作用及び効果の説明は省略する。 <Example 2>
Next, a second embodiment of the present invention will be described with reference to FIG. In the connector B of the second embodiment, the molded portion 41 and the housing 45 constituting the terminal-attached electric wire 40 are configured differently from the first embodiment. Since other configurations are the same as those in the first embodiment, the same reference numerals are given to the same configurations, and descriptions of the structure, operation, and effects are omitted.
　本実施例２の端子付き電線４０は、モールド部４１の収容部４２（端子収容室４６の収容される領域）の形成範囲が、上記実施例１の収容部３１の形成範囲に加え、絶縁被覆１３の前端部までも包囲する領域に亘っている。また、ハウジング４５に関しては、端子収容室４６の形成範囲が実施例１の端子収容室３６よりも後方へ延長されている。これにより、本実施例２のコネクタＢでは、端子金具１５の全体と、芯線１２の露出部１４と、絶縁被覆１３の前端部が端子収容室４６内に収容されている。尚、モールド部４１のうち端子収容室４６の後方に突出した突出部４３には、実施例１の補強部３４と同様の補強部４４が形成されている。 In the electric wire with terminal 40 of the second embodiment, the formation range of the accommodating portion 42 (the region in which the terminal accommodating chamber 46 is accommodated) of the mold portion 41 is in addition to the formation range of the accommodating portion 31 of the first embodiment. 13 also extends to the surrounding area. Further, with respect to the housing 45, the formation range of the terminal accommodating chamber 46 is extended rearward from the terminal accommodating chamber 36 of the first embodiment. As a result, in the connector B of the second embodiment, the entire terminal fitting 15, the exposed portion 14 of the core wire 12, and the front end portion of the insulating coating 13 are accommodated in the terminal accommodating chamber 46. A reinforcing portion 44 similar to the reinforcing portion 34 of the first embodiment is formed on the protruding portion 43 of the mold portion 41 that protrudes rearward of the terminal accommodating chamber 46.
　＜他の実施例＞
　本発明は上記記述及び図面によって説明した実施例に限定されるものではなく、例えば次のような実施例も本発明の技術的範囲に含まれる。
　（１）上記実施例１、２では、被覆電線の芯線をアルミニウム製又はアルミニウム合金製としたが、芯線の材料は、アルミニウムやアルミニウム合金に限らず、銅や銅合金等の他の金属であってもよい。
　（２）上記実施例１、２では、端子金具を銅製又は銅合金製としたが、端子金具の材料は、銅や銅合金に限らず、アルミニウムやアルミニウム合金等の他の金属であってもよい。
　（３）上記実施例１、２では、モールド部の前端側領域のみが端子収容室内に収容されるようにしたが、モールド部の全体が端子収容室内に収容されるようにしてもよい。
　（４）上記実施例１、２では、第１バレル部の後端部に拡径部を形成したが、第１バレル部の後端部に拡径部を形成しない形態としてもよい。
　（５）上記実施例１、２では、第２バレル部の後端部に拡径部を形成したが、第１バレル部の後端部に拡径部を形成しない形態としてもよい。
　（６）上記実施例１、２では、両バレル部の底板部を端子本体部の基底部に対して底上げした形態としたが、底板部と基底部とが同じ高さで面一状に連続していてもよい。
　（７）上記実施例１、２では、モールド部の突出部に補強部を形成したが、突出部に補強部を形成しない形態としてもよい。
　（８）上記実施例１，２では、第２バレル部が絶縁被覆と非接触とされているが、第２バレル部の後端が絶縁被覆の前端面と接触していてもよい。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 and 2 above, the core wire of the covered electric wire is made of aluminum or aluminum alloy, but the material of the core wire is not limited to aluminum or aluminum alloy but may be other metals such as copper and copper alloy. May be.
(2) In the first and second embodiments, the terminal fitting is made of copper or copper alloy, but the material of the terminal fitting is not limited to copper or copper alloy, but may be other metals such as aluminum or aluminum alloy. Good.
(3) In the first and second embodiments, only the front end side region of the mold portion is accommodated in the terminal accommodating chamber, but the entire mold portion may be accommodated in the terminal accommodating chamber.
(4) In Examples 1 and 2, the enlarged diameter portion is formed at the rear end portion of the first barrel portion. However, the enlarged diameter portion may not be formed at the rear end portion of the first barrel portion.
(5) In Examples 1 and 2, the enlarged diameter portion is formed at the rear end portion of the second barrel portion. However, the enlarged diameter portion may not be formed at the rear end portion of the first barrel portion.
(6) In the first and second embodiments, the bottom plate portions of both barrel portions are raised with respect to the base portion of the terminal main body portion, but the bottom plate portion and the base portion are continuously flush with each other at the same height. You may do it.
(7) In Examples 1 and 2, the reinforcing part is formed on the protruding part of the mold part, but the reinforcing part may not be formed on the protruding part.
(8) In the first and second embodiments, the second barrel portion is not in contact with the insulating coating, but the rear end of the second barrel portion may be in contact with the front end surface of the insulating coating.
　Ａ、Ｂ…コネクタ
　１０、４０…端子付き電線
　１１…被覆電線
　１２…芯線
　１３…絶縁被覆
　１４…芯線の露出部
　１５…端子金具
　１６…端子本体部
　２２…基底部
　２３Ｆ…第１バレル部
　２３Ｒ…第２バレル部
　２４…底板部
　２７Ｆ…第１カシメ片（第１バレル部のカシメ片）
　２７Ｒ…第２カシメ片（第２バレル部のカシメ片）
　２８Ｆ…第１拡径部（第１バレル部の拡径部）
　２８Ｒ…第２拡径部（第２バレル部の拡径部）
　３０、４１…モールド部
　３５、４５…ハウジング
　３６、４６…端子収容室
　３１、４２…収容部
　３２、４３…突出部
　３３、４４…補強部 A, B: Connector 10, 40 ... Electric wire with terminal 11 ... Coated electric wire 12 ... Core wire 13 ... Insulation coating 14 ... Exposed portion of core wire 15 ... Terminal metal fitting 16 ... Terminal body portion 22 ... Base portion 23F ... First barrel portion 23R ... Second barrel portion 24 ... bottom plate portion 27F ... first caulking piece (caulking piece of the first barrel portion)
27R ... Second caulking piece (caulking piece of the second barrel part)
28F ... 1st diameter expansion part (diameter expansion part of the 1st barrel part)
28R ... 2nd diameter expansion part (diameter expansion part of 2nd barrel part)
30, 41 ... Mold part 35, 45 ... Housing 36, 46 ... Terminal accommodation chamber 31, 42 ... Accommodation part 32, 43 ... Projection part 33, 44 ... Reinforcement part

Claims (8)

  1. 　芯線と、前記芯線を包囲する絶縁被覆とを有していて、前端側では前記芯線が露出されている被覆電線と、
    　端子金具と、
    　前記端子金具に形成され、前記芯線の露出部の前端側領域に対し包囲するように圧着された第１バレル部と、
    　前記端子金具における前記第１バレル部よりも後方で前記絶縁被覆よりも前方の位置に形成され、前記芯線の前記露出部の後端側領域に対し包囲するように圧着された第２バレル部と、
    　前記芯線のうち前記第１バレル部及び前記第２バレル部との圧着部分を含む前記露出部の全領域と、前記絶縁被覆の前端部とを液密状に覆うモールド部とを備え、
    　前記端子金具の全体と前記モールド部とが、ハウジングに形成された端子収容室に収容されるようになっていることを特徴とする端子付き電線。     A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side;
    Terminal fittings,
    A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire;
    A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; ,
    A mold part that covers the entire area of the exposed part including the crimping part between the first barrel part and the second barrel part of the core wire, and a mold part that covers the front end part of the insulating coating in a liquid-tight manner,
    The terminal-attached electric wire, wherein the entire terminal fitting and the molded part are accommodated in a terminal accommodating chamber formed in a housing.
  2. 　前記端子金具を構成する端子本体部と、
    　前記第１バレル部及び前記第２バレル部を構成し、前記端子本体部の基底部の後端に連なる底板部と、
    　前記第１バレル部及び前記第２バレル部を構成し、前記底板部の幅方向両側縁から対をなして延出するカシメ片とを備え、
    　前記底板部が、前記基底部に対して底上げした形態であることを特徴とする請求項１記載の端子付き電線。     A terminal main body constituting the terminal fitting;
    Constituting the first barrel part and the second barrel part, a bottom plate part connected to the rear end of the base part of the terminal body part;
    The first barrel portion and the second barrel portion are configured, and crimped pieces extending in pairs from both side edges in the width direction of the bottom plate portion,
    The electric wire with a terminal according to claim 1, wherein the bottom plate portion is shaped to be raised with respect to the base portion.
  3. 　前記第２バレル部における前記芯線の断面積が、前記第１バレル部における前記芯線の断面積よりも大きいことを特徴とする請求項１又は請求項２記載の端子付き電線。 The electric wire with a terminal according to claim 1 or 2, wherein a cross-sectional area of the core wire in the second barrel portion is larger than a cross-sectional area of the core wire in the first barrel portion.
  4. 　前記第１バレル部を構成する前記カシメ片には、後方に向かって拡径した拡径部が形成されていることを特徴とする請求項１ないし請求項３のいずれか１項に記載の端子付き電線。 4. The terminal according to claim 1, wherein the crimping piece constituting the first barrel portion is formed with a diameter-expanded portion that is expanded toward the rear. 5. With electric wire.
  5. 　前記第２バレル部を構成する前記カシメ片には、後方に向かって拡径した拡径部が形成されていることを特徴とする請求項１ないし請求項４のいずれか１項に記載の端子付き電線。 The terminal according to any one of claims 1 to 4, wherein the crimping piece constituting the second barrel part is formed with a diameter-enlarged part that is enlarged toward the rear. With electric wire.
  6. 　前記モールド部のうち前記ハウジング外へ突出した突出部に形成され、前記突出部の剛性を高める補強部を備えていることを特徴とする請求項４ないし請求項５のいずれか１項に記載の端子付き電線。 6. The device according to claim 4, further comprising a reinforcing portion that is formed in a protruding portion that protrudes out of the housing of the mold portion and that increases the rigidity of the protruding portion. Electric wire with terminal.
  7. 　前記モールド部のうち前記ハウジング外へ突出した前記突出部の肉厚を、前記モールド部のうち前記端子収容室内に収容されている収容部の肉厚よりも厚くすることで、前記補強部が構成されていることを特徴とする請求項６記載の端子付き電線。 The reinforcing part is configured by making the thickness of the protruding part protruding out of the housing out of the mold part thicker than the thickness of the accommodating part accommodated in the terminal accommodating chamber in the mold part. The electric wire with a terminal according to claim 6, wherein the electric wire has a terminal.
  8. 　芯線と、前記芯線を包囲する絶縁被覆とを有していて、前端側では前記芯線が露出されている被覆電線と、
    　端子金具と、
    　前記端子金具に形成され、前記芯線の露出部の前端側領域に対し包囲するように圧着された第１バレル部と、
    　前記端子金具における前記第１バレル部よりも後方で前記絶縁被覆よりも前方の位置に形成され、前記芯線の前記露出部の後端側領域に対し包囲するように圧着された第２バレル部と、
    　前記芯線のうち前記第１バレル部及び前記第２バレル部との圧着部分を含む前記露出部の全領域と、前記絶縁被覆の前端部とを液密状に覆うモールド部と、
    　前記端子金具の全体と前記モールド部とを収容する端子収容室が形成されたハウジングとを備えていることを特徴とするコネクタ。     A coated electric wire having a core wire and an insulating coating surrounding the core wire, the core wire being exposed on the front end side;
    Terminal fittings,
    A first barrel portion formed on the terminal fitting and crimped to surround the front end side region of the exposed portion of the core wire;
    A second barrel portion formed at a position behind the first barrel portion and in front of the insulating coating in the terminal fitting, and crimped so as to surround the rear end region of the exposed portion of the core wire; ,
    A mold part that covers the entire area of the exposed part including the crimped part between the first barrel part and the second barrel part of the core wire, and a front end part of the insulating coating in a liquid-tight manner,
    A connector comprising: a housing in which a terminal housing chamber for housing the entire terminal fitting and the mold portion is formed.
PCT/JP2016/079367 2015-10-23 2016-10-03 Terminal-equipped electric wire and connector WO2017068953A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-208745 2015-10-23
JP2015208745A JP2017084482A (en) 2015-10-23 2015-10-23 Electric wire with terminal and connector

Publications (1)

Publication Number Publication Date
WO2017068953A1 true WO2017068953A1 (en) 2017-04-27

Family

ID=58557316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/079367 WO2017068953A1 (en) 2015-10-23 2016-10-03 Terminal-equipped electric wire and connector

Country Status (2)

Country Link
JP (1) JP2017084482A (en)
WO (1) WO2017068953A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002315130A (en) * 2001-04-09 2002-10-25 Yonezawa Densen Kk Wire harness, water cut-off structure for end of electric wire
JP2003297447A (en) * 2002-04-05 2003-10-17 Furukawa Electric Co Ltd:The Connection terminal device
JP2005050736A (en) * 2003-07-30 2005-02-24 Furukawa Electric Co Ltd:The Method of manufacturing terminal crimping structure to aluminum wire and aluminum wire with terminal
JP2009087848A (en) * 2007-10-02 2009-04-23 Furukawa Electric Co Ltd:The Crimp terminal for aluminum wire and method of crimping terminal of aluminum wire
JP2009295352A (en) * 2008-06-03 2009-12-17 Sumitomo Wiring Syst Ltd Crimp terminal
JP2012079494A (en) * 2010-09-30 2012-04-19 Furukawa Electric Co Ltd:The Structure, apparatus and method for connecting terminal to electrical wire, and wire harness
JP2012084407A (en) * 2010-10-12 2012-04-26 Yazaki Corp Wire connection structure for connector terminal
JP2013069613A (en) * 2011-09-26 2013-04-18 Auto Network Gijutsu Kenkyusho:Kk Electric wire, electric wire with terminal fitting, and method of connecting terminal fitting and electric wire
JP2014013657A (en) * 2012-07-03 2014-01-23 Yazaki Corp Connector terminal and method of stopping water of the connector terminal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002315130A (en) * 2001-04-09 2002-10-25 Yonezawa Densen Kk Wire harness, water cut-off structure for end of electric wire
JP2003297447A (en) * 2002-04-05 2003-10-17 Furukawa Electric Co Ltd:The Connection terminal device
JP2005050736A (en) * 2003-07-30 2005-02-24 Furukawa Electric Co Ltd:The Method of manufacturing terminal crimping structure to aluminum wire and aluminum wire with terminal
JP2009087848A (en) * 2007-10-02 2009-04-23 Furukawa Electric Co Ltd:The Crimp terminal for aluminum wire and method of crimping terminal of aluminum wire
JP2009295352A (en) * 2008-06-03 2009-12-17 Sumitomo Wiring Syst Ltd Crimp terminal
JP2012079494A (en) * 2010-09-30 2012-04-19 Furukawa Electric Co Ltd:The Structure, apparatus and method for connecting terminal to electrical wire, and wire harness
JP2012084407A (en) * 2010-10-12 2012-04-26 Yazaki Corp Wire connection structure for connector terminal
JP2013069613A (en) * 2011-09-26 2013-04-18 Auto Network Gijutsu Kenkyusho:Kk Electric wire, electric wire with terminal fitting, and method of connecting terminal fitting and electric wire
JP2014013657A (en) * 2012-07-03 2014-01-23 Yazaki Corp Connector terminal and method of stopping water of the connector terminal

Also Published As

Publication number Publication date
JP2017084482A (en) 2017-05-18

Similar Documents

Publication Publication Date Title
US9543689B2 (en) Terminal crimped wire
WO2012029352A1 (en) Terminal fitting with cable
JP5152337B2 (en) Terminal fittings and electric wires with terminal fittings
JP2010040361A (en) Terminal fitting and wire harness
JP2010040455A (en) Terminal metal fitting and wire harness
CN108140963B (en) Connector with a locking member
WO2016167125A1 (en) Terminal and terminal-equipped electric wire
JP2011253724A (en) Terminal fitting
WO2017065042A1 (en) Connector, and electric wire with terminal
JP5387477B2 (en) Terminal bracket with wire
JP2011154944A (en) Female terminal fitting
JP5131134B2 (en) Rubber stopper and waterproof connector
JP6508527B2 (en) Terminal Wire
JP2010061906A (en) Electric wire with terminal fitting
WO2017068953A1 (en) Terminal-equipped electric wire and connector
WO2017065041A1 (en) Connector and wire with terminal
US20200169010A1 (en) Conductive member
KR20070076550A (en) A terminal fitting and connector provided therewith
JP2010067432A (en) Connector
WO2016186021A1 (en) Terminal and terminal-equipped electric wire
JP7283365B2 (en) Wire with terminal
JP7280065B2 (en) crimp terminal
JP6684297B2 (en) Wire with terminal, wire harness
JP2022146963A (en) Electric wire with terminal
JP2022024305A (en) Electric wire with terminal

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16857269

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16857269

Country of ref document: EP

Kind code of ref document: A1