JP2010003588A - Terminal fitting, and structure of connecting terminal fitting to shielded cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure an appropriate contact pressure by holding braided wire between pieces of metal without increasing the number of parts. <P>SOLUTION: A terminal fitting 20 has in an integrated manner a base part 25 to be fitted on a region of an outer circumference of a sheath 14 to be surrounded by the braided wire 13, and an open barrel caulking part 30 having a pair of caulking ends 32 extended from a base portion 31. In the connection of the terminal fitting 20 to a shielded cable 10, the caulking part 30 displaced to a caulking position is caulked in surrounding a terminal contact portion 15 of the braided wire 13 covering the base part 25, and the terminal contact portion 15 is conductively held between an outer circumference of the base part 25 and an inner circumference of the caulking part 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a terminal fitting and a connection structure between the terminal fitting and a shielded electric wire.

In Patent Document 1, as a means for connecting the terminal fitting and the braided wire of the shielded electric wire, the sheath of the shielded electric wire is removed to expose the braided wire, and the exposed braided wire is folded and covered on the outer periphery of the sheath, A structure is disclosed in which an open barrel-shaped crimping piece of a terminal fitting is crimped to the outer periphery of the covered braided wire.
JP 2000-323213 A

In the above structure, the braided wire is sandwiched between the inner periphery of the crimping piece and the outer periphery of the sheath, so that the contact pressure is ensured, but the sheath is made of synthetic resin and compared to metal. Since the rigidity is low, there is a concern that sufficient contact pressure cannot be obtained.
As a countermeasure, crimp the open barrel-shaped crimping piece of the terminal fitting on the outer circumference of the sheath, fold the braided wire around the crimped crimped piece, and wrap the metal caulking on the outer circumference of the braided wire. A structure for caulking the ring is conceivable. According to this structure, since the braided wire is sandwiched between the metal caulking piece and the metal caulking ring, an appropriate contact pressure can be ensured.
However, using caulking means that the number of parts increases, which is not always preferable from the viewpoint of cost and parts management.
The present invention has been completed based on the above circumstances, and an object thereof is to ensure an appropriate contact pressure by sandwiching a braided wire with metal without increasing the number of parts. .

  As means for achieving the above object, the invention of claim 1 is a connection structure for connecting a shielded electric wire and a terminal fitting so as to be conductive, and the shielded electric wire has a cylindrical shape surrounding the conductor. A braided wire and a synthetic resin sheath covering the braided wire, and at a connecting portion with the terminal fitting, a distal end portion of the braided wire exposed from the sheath is surrounded by the sheath The terminal fitting is configured to function as a terminal contact portion by folding back, and the terminal fitting is formed integrally with the terminal body, the terminal body having a connection portion connected to a connection target of the terminal fitting, and the sheath By being fixed to the outer periphery, a fixed portion for holding the shielded electric wire in a movement-restricted state with respect to the terminal fitting is formed integrally with the terminal body, and the terminal contact is formed on the outer periphery of the sheath. A generally cylindrical base portion that is externally fitted to a region surrounded by the portion, an open barrel-shaped crimping portion that is formed integrally with the terminal main body and extends a pair of crimping pieces from the base portion; The base portion is formed integrally with the terminal main body from a retracted position that does not correspond to the base portion and allows an operation of folding the end of the braided wire and covering the outer periphery of the base portion. And a hinge part that supports displacement to the corresponding caulking position, and when the shielded electric wire and the terminal fitting are connected, the caulking part displaced to the caulking position is connected to the base part. The terminal contact portion is crimped and deformed in a state of surrounding the terminal contact portion, and the terminal contact portion is sandwiched between the outer periphery of the base portion and the inner periphery of the crimping portion so as to be conductive. Special Having.

  According to a second aspect of the present invention, in the first aspect of the present invention, the base portion has an open barrel shape and is fixed in a state in which relative movement is restricted with respect to the outer periphery of the sheath by caulking. It is characterized by

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the hinge portion is formed with a thin-walled portion in which a portion to be a fulcrum for the displacement of the caulking portion is locally thinned. It has the characteristics where it is done.

  Invention of Claim 4 is arranged in the thing in any one of Claim 1 thru / or Claim 3 so that the above-mentioned terminal main part may be arranged along the field behind the above-mentioned terminal contact part in the above-mentioned shield electric wire, In the state where the base portion is connected to the front end portion of the terminal body, the hinge portion is connected to the rear end of the terminal body, and the caulking portion is displaced to the caulking position, the hinge portion is The terminal body is characterized by being arranged along the outer surface opposite to the shielded wire side.

  The invention of claim 5 comprises a cylindrical braided wire surrounding the conductor and a synthetic resin sheath covering the braided wire, and the tip of the braided wire exposed from the sheath is attached to the sheath. A terminal fitting connected to a shielded electric wire designed to function as a terminal contact portion by being folded back so as to surround, a terminal body having a connection portion connected to a connection target, and the terminal body integrally Formed and fixed to the outer periphery of the sheath, so that the shielded electric wire is held in a movement-restricted state with respect to the terminal main body, and is formed integrally with the terminal main body. A generally cylindrical base portion that is externally fitted to a region surrounded by the terminal contact portion, and an open barrel-shaped crimping portion that is formed integrally with the terminal main body and has a pair of crimping pieces extending from the base portion. The base is formed from the retracted position that is formed integrally with the terminal body and allows the operation of covering the crimping portion on the outer periphery of the base portion by folding back the tip end portion of the braided wire that does not correspond to the base portion. And a hinge part that supports displacement to a corresponding caulking position, and the terminal that the caulking part displaced to the caulking position covers the base part when connected to the shielded electric wire. The terminal contact portion is sandwiched so as to be conductive between the outer periphery of the base portion and the inner periphery of the crimp portion by being crimped and deformed in a state of surrounding the contact portion. Have.

  According to a sixth aspect of the present invention, in the apparatus according to the fifth aspect, the base portion has an open barrel shape and is fixed in a state in which relative movement is restricted with respect to the outer periphery of the sheath by caulking. It is characterized by

  According to a seventh aspect of the present invention, in the fifth or sixth aspect of the present invention, the hinge portion is formed with a thin portion that is locally thinned at a portion that should serve as a fulcrum for the displacement of the caulking portion. It has the characteristics where it is done.

  According to an eighth aspect of the present invention, in the device according to any one of the fifth to seventh aspects, the terminal main body is arranged along a region behind the terminal contact portion in the shielded electric wire. The base portion is connected to the front end portion of the terminal body, the hinge portion is connected to the rear end of the terminal body, and the hinge portion is in a state where the crimping portion is displaced to the crimping position. However, the terminal body is characterized by being arranged along the outer surface on the opposite side to the shielded wire side.

<Invention of Claims 1 and 5>
Since the terminal contact portion of the braided wire is sandwiched between the metal base portion and the metal crimping portion, the shielded electric wire and the terminal fitting can be connected so as to be conductive with an appropriate contact pressure. Since both the base portion and the crimping portion sandwiching the braided wire are formed integrally with the terminal fitting, it is not necessary to provide a separate component from the terminal fitting, and the number of components can be reduced.

<Invention of Claims 2 and 6>
Since the base part also has a function as an adhering part for holding the terminal fitting and the shielded electric wire in a movement restricted state, it is not necessary to form an adhering part separately from the base part, and the shape of the terminal fitting is simple Can be achieved.

<Invention of Claim 3 and Claim 7>
Since the thin portion is easily bent, the position of the fulcrum of the displacement of the caulking portion is stabilized. As a result, when the caulking portion is displaced to the caulking position, the position accuracy of the caulking portion with respect to the base portion is increased, and poor connection with the braided wire due to the positional deviation between the base portion and the caulking portion can be avoided. it can.

<Invention of Claims 4 and 8>
In a state where the caulking portion is displaced to the caulking position and the shielded electric wire and the terminal fitting are connected, the hinge portion is arranged along the outer surface of the terminal body without projecting greatly from the outer surface of the terminal body. . Therefore, there is no possibility that foreign matter interferes with the hinge portion.

<Embodiment 1>
Hereinafter, Embodiment 1 which actualized the connection structure of the terminal metal fitting 20 of the present invention and the terminal metal fitting 20 and the shielded electric wire 10 will be described with reference to FIGS. 1 to 9. In the following description, regarding the front-back direction, the left side in FIGS. 1 and 2 is referred to as the front.

  First, the shielded electric wire 10 will be described. The shielded electric wire 10 includes a conductor 11 having a circular cross section made of a stranded wire, a core 12 made of a synthetic resin that concentrically surrounds the conductor 11, and a cylindrical shape in which metal fine wires are knitted into a mesh shape. 12 includes a braided wire 13 that covers the outer periphery of 12, and a sheath 14 made of a synthetic synthetic resin that surrounds the braided wire 13 concentrically with the core 12. The sheath 14 is made of a relatively rigid resin material such as a flame retardant crosslinked polyolefin. At the front end portion of the shielded electric wire 10, the sheath 14 is removed, and the braided wire 13 is exposed forward by a predetermined length from the distal end of the remaining sheath 14. The exposed end of the braided wire 13 is separated from the outer peripheral surface of the core 12 and functions as a terminal contact portion 15 for connecting to the terminal fitting 20 as will be described later.

  Next, about the terminal metal fitting 20, the form before connecting with the shield electric wire 10 is demonstrated. The terminal fitting 20 is formed by bending a metal plate material punched into a predetermined shape. As shown in FIGS. 1 and 2, the terminal main body 21, the connection portion 22, the base portion 25, the hinge portion 28, the caulking portion 30, and the like. Is a single part formed integrally. The terminal body 21 extends in the front-rear direction, and the transverse cross-sectional shape perpendicular to the length direction is curved in an arc shape having substantially the same curvature as the outer peripheral surface of the sheath 14 and having the upper surface recessed. Yes.

  The connection portion 22 has a rectangular flat plate shape, and is continuous in a form extending outward over substantially the entire length of one side edge of the terminal body 21. The connecting portion 22 functions as a means for connecting the terminal fitting 20 to a connection target (grounding member) (not shown) so as to be conductive, and the connecting portion 22 has a long oval connection in the front-rear direction. A hole 23 is formed. The terminal main body 21 is formed with an arm portion 24 that extends upward from a substantially second half region on the side edge opposite to the connection portion 22 and is slightly curved inward.

  The base portion 25 is a form that is continuous with the front end portion of the terminal body 21. The base portion 25 has an open barrel shape including a first base portion 26 and a pair of first caulking pieces 27. The first base portion 26 has a curved arc shape with a concave shape on the upper surface side, and is continuous with the terminal body 21 in a flush manner. The pair of first caulking pieces 27 is bilaterally symmetric and extends in a cantilevered manner from the left and right side edges of the first base portion 26 obliquely outward. The base portion 25 functions as a fixing portion for holding the shielded electric wire 10 in a movement restricted state with respect to the terminal fitting 20 by being fixed to the outer periphery of the sheath 14.

  The hinge portion 28 has a form extending linearly rearward from the rear end edge of the terminal body 21. The width dimension of the hinge portion 28 is considerably smaller than the terminal main body 21 and is slightly larger than the plate thickness dimension of the hinge portion 28. The front and rear length of the hinge portion 28 is substantially the same as or slightly longer than the front and rear length of the terminal body 21. The formation position of the hinge portion 28 in the width direction (left-right direction) is the center position in the width direction of the terminal body 21, that is, the lowest position in the curved terminal body 21. The upper surface of the hinge portion 28 is continuous with the upper surface of the terminal body 21, and the lower surface of the hinge portion 28 is continuous with the lower surface of the terminal body 21.

  A thin portion 29 is formed at a position near the front end portion of the hinge portion 28, that is, the rear end edge of the terminal body 21. The thin-walled portion 29 becomes the center (fulcrum) of turning when the crimping portion 30 is displaced so as to pivot from the retracted position to the crimping position as will be described later. The thin-walled portion 29 is cut out only on the lower surface of the hinge portion 28 (the surface that is continuous with the surface opposite to the recessed side of the terminal body 21 and is the inner surface of the bending when the hinge portion 28 is bent). It is a form. When the thin-walled portion 29 is viewed from the side, as shown in FIG. 2, the shape of the cutout portion in the thin-walled portion 29 is a symmetrical triangle, and the thin-walled portion 29 is the thinnest at the center in the front-rear direction. It has become. That is, the thin-walled portion 29 has the lowest rigidity in the thinnest portion and is most easily bent and deformed.

  The caulking part 30 is in a form continuous to the rear end of the hinge part 28 and has a symmetrical shape. The caulking portion 30 includes a second base portion 31 extending rearward from the hinge portion 28 and a pair of second caulking pieces extending in a cantilevered manner from the left and right side edges of the second base portion 31 obliquely downward and outward. 32. The second base portion 31 is considerably wider than the hinge portion 28 and is continuous with the hinge portion 28 at the center in the width direction. The second base portion 31 is curved in an arc shape so that the lower surface side is recessed, and the radius of curvature thereof is slightly larger than the radius of curvature of the first base portion 26. Specifically, the curvature radius of the lower surface (recessed surface) of the second base portion 31 is substantially the same as the curvature radius of the lower surface (surface opposite to the recessed surface) of the first base portion 26.

  The length of the second base 31 is substantially the same as the length of the first base 26, and the width of the second base 31 is slightly larger than the width of the first base 26. It is. The longitudinal length of the pair of second caulking pieces 32 is the same as the longitudinal length of the second base portion 31 and the longitudinal length of the first caulking piece 27. The extension dimension of the second caulking piece 32 from the second base part 31 is larger than the extension dimension of the first caulking piece 27 from the first base part 26.

  As shown in FIGS. 1 and 2, in a state where the hinge portion 28 extends straight rearward from the terminal body 21 without being bent and deformed, the crimping portion 30 is located at the retracted position. In the state in which the crimping portion 30 is in the retracted position, the crimping portion 30 and the base portion 25 are not compatible, and an operation of folding the front end portion of the braided wire 13 backward and covering the outer periphery of the base portion 25 is allowed. . Further, as shown in FIGS. 3 and 7, when the hinge portion 28 is bent so as to be bent at the thin-walled portion 29 and folded back to the front side (terminal body 21 side), the caulking portion 30 is integrated with the hinge portion 28. The thin portion 29 is turned about 180 ° so as to be reversed to the caulking position corresponding to the base portion 25 with the thin portion 29 as a fulcrum. At this time, the caulking portion 30 is externally fitted to the base portion 25 from below.

Next, the connection process between the terminal fitting 20 and the shielded electric wire 10 will be described.
First, as shown in FIGS. 1 and 2, the front end portion of the sheath 14 of the shielded electric wire 10 is placed on the terminal main body 21 and the base portion 25 of the terminal fitting 20 from above when the crimping portion 30 is in the retracted position. At this time, alignment is performed so that the front end edge of the sheath 14 is in the same position as the front end edge of the base portion 25 or slightly ahead of the front end edge in the front-rear direction (axial direction of the shielded electric wire 10).

  Thereafter, as shown in FIG. 5, the first caulking piece 27 is caulked and deformed so as to bite into the outer periphery of the sheath 14. As a result, the base portion 25 is deformed into a substantially arc shape, and relative movement in the front-rear direction (the axial direction of the shielded electric wire 10) and relative rotation around the axis of the shielded electric wire 10 are restricted with respect to the outer periphery of the sheath 14. It is fixed to the state. At the same time as or after the caulking of the base portion 25, the arm portion 24 is fixed so as to be caulked and bite into the outer periphery of the sheath 14. As a result, the shielded electric wire 10 is fixed to the terminal fitting 20 in a state in which relative movement is restricted at two front and rear positions.

  Thereafter, as shown in FIG. 6, the tip of the braided wire 13, that is, the portion exposed forward from the sheath 14, is folded back so as to be reversed backward while expanding the diameter, and is formed into a cylindrical shape. As shown in FIG. 8, the folded portion of the braided wire 13 surrounds the base portion 25 and the front end portion of the sheath 14 over the entire circumference. A portion of the braided wire 13 that is folded back and covered with the base portion 25 functions as a terminal contact portion 15 that is a means for contacting the terminal fitting 20 so as to be conductive.

  After that, as shown in FIG. 7, the thin portion 29 is bent and deformed, so that the hinge portion 28 and the crimping portion 30 are turned forward with the thin portion 29 as a fulcrum while swiveling below the terminal body 21. Then, the caulking part 30 reaches the caulking position. In a state where the caulking portion 30 is displaced to the caulking position, the second base portion 31 approaches the first base portion 26 from below and sandwiches the leading end portion of the braided wire 13 with the first base portion 26. The second crimping piece 32 faces the outer surface of the first crimping piece 27 with the braided wire 13 in between. Further, the caulking portion 30 is positioned so as to correspond to the base portion 25 in the front-rear direction. Further, the position of the first caulking piece 27 in the base portion 25 (the position where the extending ends of the first caulking piece 27 face each other) and the position of the second caulking piece 32 in the caulking portion 30 (first position). The position at which the extended ends of the two crimping pieces 32 face each other matches each other at the upper end position in the circumferential direction.

  On the other hand, the hinge portion 28 is positioned so as to extend forward along the lower surface of the terminal main body 21 (the surface opposite to the recessed surface contacting the sheath 14 of the shielded electric wire 10). At this time, the vertical dimension between the hinge part 28 and the terminal body 21 is small, and the projecting dimension of the hinge part 28 from the rear end edge of the terminal body 21 is also small. That is, the hinge portion 28 does not protrude greatly from the terminal body 21 over the entire area.

  Thereafter, as shown in FIGS. 7 and 9, the caulking portion 30 displaced to the caulking position is caulked and deformed. Then, the second caulking piece 32 is brought into close contact with the braided wire 13 fitted on the first caulking piece 27, and the caulking portion 30 is deformed into an arc shape concentric with the base portion 25. As a result, the front end portion (that is, the cylindrical terminal contact portion 15) folded back in the braided wire 13 is firmly sandwiched between the outer peripheral surface of the base portion 25 and the outer peripheral surface of the caulking portion 30. The braided wire 13 and the terminal fitting 20 are connected so as to be conductive with an appropriate contact pressure. Further, the terminal contact portion 15 (braided wire 13) is restricted from being detached from between the base portion 25 and the caulking portion 30 by the clamping action, so that the connected state is maintained. Thus, the connection process between the shielded electric wire 10 and the terminal fitting 20 is completed.

  As described above, in the terminal fitting 20 of the present embodiment, the substantially cylindrical base portion 25 that is externally fitted to the region surrounded by the terminal contact portion 15 on the outer periphery of the sheath 14, and the second base portion 31. A caulking portion 30 is formed integrally with the caulking portion 30 so as to be displaced from the retracted position to the caulking position in an open barrel shape in which a pair of second caulking pieces 32 are extended from the caulking. When the crimping portion 30 is in the retracted position not corresponding to the base portion 25, the operation of folding the end portion of the braided wire 13 over the outer periphery of the base portion 25 is allowed, and the shielded electric wire 10 and the terminal fitting 20 are connected. In this state, the caulking portion 30 displaced to the caulking position is caulked and deformed in a state of surrounding the terminal contact portion 15 of the shielded electric wire 10 covered with the base portion 25, and the terminal contact portion 15 is then deformed into the base portion 25. Between the outer periphery and the inner periphery of the caulking portion 30 so as to be conductive.

  Thus, according to the present embodiment, the terminal contact portion 15 of the braided wire 13 is sandwiched between the metal base portion 25 and the metal caulking portion 30, so that the shielded electric wire 10 and the terminal fitting 20 are It can be connected so as to be able to conduct with an appropriate contact pressure. Since the base portion 25 and the caulking portion 30 sandwiching the braided wire 13 are both formed integrally with the terminal fitting 20, it is not necessary to provide a separate component from the terminal fitting 20, and the number of components can be reduced. Yes.

  In addition, the base portion 25 has an open barrel shape and is fixed in a state in which relative movement is restricted with respect to the outer periphery of the sheath 14 by caulking, so that the terminal fitting 20 and the shielded electric wire 10 are moved. It functions as an adhering part for maintaining the restricted state. Therefore, it is not necessary to form the fixing portion separately from the base portion 25, and the shape of the terminal fitting 20 is simplified.

  Moreover, although the thin part 29 of the form which made the part which should be a fulcrum of the displacement of the crimping part 30 thin locally is formed in the hinge part 28, since this thin part 29 is easy to bend, The position of the fulcrum of displacement of the crimping portion 30 is stabilized. Thereby, when the crimping part 30 is displaced to the crimping position, the positional accuracy of the crimping part 30 with respect to the base part 25 is increased, and the connection between the base part 25 and the braided wire 13 due to the positional deviation between the crimping part 30 is achieved. Defects can be avoided.

  In addition, the terminal body 21 is arranged so as to extend along a region behind the terminal contact portion 15 in the shielded electric wire 10 in a state where the terminal fitting 20 and the shielded electric wire 10 are connected, and the base portion 25. Is connected to the front end of the terminal main body 21, and the hinge portion 28 is connected to the rear end of the terminal main body 21. When the crimping portion 30 is displaced to the crimping position, the hinge portion 28 is connected to the shielded electric wire 10 in the terminal main body 21. It is along the outer surface opposite to the side. By adopting such a configuration, in a state where the caulking portion 30 is displaced to the caulking position and the shielded electric wire 10 and the terminal fitting 20 are connected, the hinge portion 28 does not protrude greatly from the outer surface of the terminal body 21. The terminal body 21 can be arranged along the outer surface. Therefore, there is no possibility that foreign matter interferes with the hinge portion 28.

<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 the above embodiment, the base portion has a function as the fixing portion. However, the fixing portion may be provided separately from the base portion. In this case, the base portion does not need to be fixed in a movement-restricted state with respect to the outer periphery of the sheath, and the base portion is not limited to the open barrel shape, and may have a continuous cylindrical shape over the entire circumference. Good.
(2) In the above-described embodiment, the thin portion is formed at a position serving as a fulcrum for the displacement of the caulking portion in the hinge portion. However, such a thin portion may not be formed. In this case, if a positioning structure for specifying the bending position of the hinge portion is provided in the automatic machine in which the terminal fitting and the shielded electric wire are set, it is possible to avoid the displacement of the caulking portion with respect to the base portion.
(3) In the above embodiment, the thin wall portion has a shape in which the inner portion of the hinge portion is bent, but the thin portion may have a shape in which the outer portion of the hinge portion is bent. It is good also as a form which notched both the inner part and the outer part of the bending.
(4) In the above embodiment, the turning angle at the time of displacement from the retracted position of the caulking portion to the caulking position is 180 °, but the turning angle at the time of displacement of the caulking portion may be an angle smaller than 180 °, from 180 ° A large angle may be used.
(5) In the above-described embodiment, the hinge portion is arranged along the outer surface of the terminal body opposite to the shielded wire side while the crimping portion is displaced to the crimping position. However, the crimping portion is displaced to the crimping position. The hinge portion may protrude greatly from the outer surface of the terminal body.
(6) In the above embodiment, the hinge portion is connected to the terminal body, but the hinge portion may be connected to the connection portion.
(7) In the above embodiment, the position of the seam of the crimping piece in the base part and the position of the seam of the crimping piece in the caulking part are substantially matched in the circumferential direction. The position of the seam on the caulking portion side may be a non-corresponding positional relationship that is different from each other in the circumferential direction.
(8) In the above embodiment, the hinge portion is reversed in a folded state when the crimping portion is displaced from the retracted position to the crimping position. However, the hinge portion may be twisted and deformed in accordance with the displacement of the crimping portion. Good.
(9) Although the front-rear length of the base portion and the front-rear length of the caulking portion are substantially the same in the above embodiment, the front-rear length of the base portion and the front-rear length of the caulking portion may be different from each other.
(10) In the above embodiment, a claw piece (not shown) may be formed to project from the extended edge of the first caulking piece. With this configuration, when the first caulking piece is fixed to the outer periphery of the sheath, the claw piece bites into the outer periphery of the sheath, so that the opening of the first caulking piece after fixing (after caulking) can be prevented. .

The top view of the terminal metal fitting which shows the state which has a crimping part in a retracted position in Embodiment 1. Side view of the terminal fitting showing the crimped part in the retracted position Side view of the terminal fitting showing the crimped part in the crimped position Front view of the terminal fitting showing the crimped part in the retracted position Side view showing the base fixed to the sheath Side view showing the state where the braided wire is folded and covered on the crimped part Side view showing a state where the terminal contact portion is sandwiched between the base portion and the crimping portion displaced to the crimping position. XX sectional view of FIG. YY sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Shield electric wire 11 ... Conductor 13 ... Braided wire 14 ... Sheath 15 ... Terminal contact part 20 ... Terminal metal fitting 21 ... Terminal main body 22 ... Connection part 25 ... Base part (adhesion part)
28 ... Hinge part 29 ... Thin part 30 ... Caulking part 31 ... Second base part (base part)
32. Second caulking piece (caulking piece)

Claims (8)

A connection structure for connecting the shielded electric wire and the terminal fitting so as to be conductive,
The shielded wire is
A tubular braided wire surrounding the conductor;
And a synthetic resin sheath covering the braided wire,
In the connection portion with the terminal metal fitting, the tip of the braided wire exposed from the sheath is made to function as a terminal contact portion by folding back so as to surround the sheath,
The terminal fitting is
A terminal body having a connection portion connected to a connection target of the terminal fitting;
A fixed part that is formed integrally with the terminal body and is fixed to the outer periphery of the sheath, thereby holding the shielded electric wire in a movement restricted state with respect to the terminal fitting,
A generally cylindrical base portion that is integrally formed with the terminal body and is externally fitted to a region surrounded by the terminal contact portion of the outer periphery of the sheath;
An open barrel-shaped crimping portion formed integrally with the terminal body and extending a pair of crimping pieces from the base,
The base portion is formed integrally with the terminal main body from a retracted position that does not correspond to the base portion and allows an operation of folding the end of the braided wire and covering the outer periphery of the base portion. And a hinge part that supports the displacement to the corresponding caulking position.
In a state where the shielded wire and the terminal fitting are connected, the crimped portion displaced to the crimped position is crimped and deformed in a state of surrounding the terminal contact portion covered by the base portion, and the terminal contact The terminal fitting and the shielded electric wire connection structure, wherein the portion is sandwiched between the outer periphery of the base portion and the inner periphery of the crimping portion so as to be conductive.   2. The terminal fitting according to claim 1, wherein the base portion has an open barrel shape and is fixed in a state in which relative movement is restricted with respect to the outer periphery of the sheath by caulking. 3. Connection structure for shielded wires.   3. The terminal fitting according to claim 1, wherein the hinge portion is formed with a thin-walled portion in which a portion to be a fulcrum of displacement of the crimping portion is locally thinned. Connection structure for shielded wires. The terminal body is arranged so as to follow a region behind the terminal contact portion in the shielded electric wire,
The base portion is connected to the front end portion of the terminal body,
The hinge portion is connected to the rear end of the terminal body,
The said hinge part is distribute | arranged so that the outer surface on the opposite side to the said shield electric wire side in the said terminal main body may be distribute | arranged in the state which displaced the said crimping part to the said crimping position. The connection structure of the terminal metal fitting and shield electric wire of any one of Claim 3. A cylindrical braided wire that surrounds the conductor and a synthetic resin sheath that covers the braided wire, and the tip of the braided wire exposed from the sheath is folded back so as to surround the sheath A terminal fitting connected to a shielded electric wire designed to function as a terminal contact portion,
A terminal body having a connection portion connected to a connection target;
The fixing portion that is formed integrally with the terminal body and is fixed to the outer periphery of the sheath, thereby holding the shielded electric wire in a movement restricted state with respect to the terminal body,
A generally cylindrical base portion that is integrally formed with the terminal body and is externally fitted to a region surrounded by the terminal contact portion of the outer periphery of the sheath;
An open barrel-shaped crimping portion formed integrally with the terminal body and extending a pair of crimping pieces from the base,
The base portion is formed integrally with the terminal main body from a retracted position that does not correspond to the base portion and allows an operation of folding the end of the braided wire and covering the outer periphery of the base portion. And a hinge part that supports the displacement to the corresponding caulking position.
In the connection state with the shielded wire, the crimping portion displaced to the crimping position is crimped and deformed in a state of surrounding the terminal contact portion covered on the base portion, whereby the terminal contact portion is A terminal fitting characterized by being sandwiched between the outer periphery of the portion and the inner periphery of the crimping portion so as to be conductive.   6. The terminal fitting according to claim 5, wherein the base portion has an open barrel shape and is fixed in a state in which relative movement is restricted with respect to the outer periphery of the sheath by caulking.   7. The terminal fitting according to claim 5, wherein the hinge portion is formed with a thin-walled portion in which a portion to be a fulcrum of displacement of the crimping portion is locally thinned. . The terminal body is arranged along a region behind the terminal contact portion in the shielded electric wire,
The base portion is connected to the front end portion of the terminal body,
The hinge portion is connected to the rear end of the terminal body,
In a state where the caulking portion is displaced to the caulking position, the hinge portion is arranged along the outer surface of the terminal body opposite to the shielded wire side. The terminal fitting according to any one of claims 5 to 7.

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