Patent Publication Number: US-2023163534-A1

Title: Shielded terminal

Description:
TECHNICAL FIELD 
     The present disclosure relates to a shielded terminal. 
     BACKGROUND 
     Patent Document 1 discloses a terminal fitting that is connected to a shielded electrical wire. The terminal fitting has an inner conductor, a dielectric body that surrounds the inner conductor, and an outer conductor that surrounds the dielectric body. The outer conductor has a tubular portion that surrounds the dielectric body, a shielding crimping portion that is crimped to braided wires of the shielded electrical wire, and a linking portion that links the tubular portion and the shielding crimping portion to each other. The inner conductor and the core wire of the shielded electrical wire are connected to each other in the linking portion. The linking portion has a pair of side wall portions, and two opening portions for enabling crimping of the inner conductor to the core wire using a pressing machine are formed between the pair of side wall portions. A cover member for shielding the connection portion between the inner conductor and the core wire is attached to the linking portion. 
     PRIOR ART DOCUMENT 
     Patent Document 
     Patent Document 1: JP 2019-114491 A 
     SUMMARY OF THE INVENTION 
     Problems to be Solved 
     The cover member is housed in the linking portion through one of the two opening portions, and has a tubular shape so as to surround the inner conductor and the core wire. The cover member has a connection piece that is connected to the outer circumference of the tubular portion and a shield-side surrounding portion that is fixed to the shielding crimping portion. Thus, when the cover member is attached to the other opening portion of the two opening portions, the connection piece and the shield-side surrounding portion cannot be correctly attached to the outer conductor. 
     A shielded terminal according to the present disclosure was completed based on the aforementioned circumstances, and it is an object thereof to prevent incorrect attachment of the cover member to the outer conductor. 
     Means to Solve the Problem 
     A shielded terminal according to the present disclosure is a shielded terminal including: 
     an outer conductor that includes a connection space sandwiched between a pair of side wall portions, and in which the connection space is open to the outside via a first opening portion and a second opening portion; 
     a shielded electrical wire connected to the outer conductor; 
     an inner conductor housed in the outer conductor and connected to a core wire of the shielded electrical wire in the connection space; 
     and a cover member that is attached within the connection space through the first opening portion, and surrounds a connection portion between the core wire and the inner conductor, 
     wherein an opening edge portion of the second opening portion is provided with an interference portion configured to interfere with the cover member. 
     EFFECT OF THE INVENTION 
     With the present disclosure, incorrect attachment of the cover member to the outer terminal can be prevented. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of a shielded terminal. 
         FIG.  2    is a perspective view showing a cover member separated from an outer conductor. 
         FIG.  3    is a side cross-sectional view showing the cover member attached to the outer conductor. 
         FIG.  4    is a perspective view showing the outer conductor and the cover member facing each other in an improper positional relationship. 
         FIG.  5    is a side cross-sectional view showing the cover member being prevented from being incorrectly attached due to interference by an interference portion. 
     
    
    
     DETAILED DESCRIPTION TO EXECUTE THE INVENTION 
     Description of Embodiments of Present Disclosure 
     First, embodiments of the present disclosure will be listed and described below. 
     (1) A shielded terminal of the present disclosure is a shielded terminal including: an outer conductor that includes a connection space sandwiched between a pair of side wall portions, and in which the connection space is open to the outside via a first opening portion and a second opening portion; a shielded electrical wire connected to the outer conductor; an inner conductor housed in the outer conductor and connected to a core wire of the shielded electrical wire in the connection space; and a cover member that is attached within the connection space through the first opening portion, and surrounds a connection portion between the core wire and the inner conductor, wherein an opening edge portion of the second opening portion is provided with an interference portion configured to interfere with the cover member. With the configuration of the present disclosure, when an attempt is made to attach the cover member to the second opening portion, interference occurs between the cover member and the interference portion, and thus the cover member cannot be attached to the second opening portion. Accordingly, with the present disclosure, incorrect attachment of the cover member to the outer conductor can be prevented. 
     (2) It is preferable that the interference portion bridges the pair of side wall portions. The interference portion that bridges the pair of side wall portions is more rigid than an interference portion that protrudes in the manner of a cantilever, and thus incorrect attachment of the cover member can be reliably prevented. 
     (3) It is preferable that the outer conductor has a crimping shielding portion that is crimped to a shielding layer of the shielded electrical wire, and the interference portion is continuous with the side wall portions and the crimping shielding portion. The interference portion that is continuous with the side wall portions and the crimping shielding portion is more rigid than an interference portion that protrudes from the side wall portions of the crimping shielding portion in the manner of a cantilever, and thus incorrect attachment of the cover member can be reliably prevented. 
     (4) In (3), it is preferable that the crimping shielding portion includes: a pair of support wall portions that are respectively diagonally continuous with rear edge portions of the pair of side wall portions; and a bottom wall portion that links the pair of support wall portions to each other on a rear side of the second opening portion, and the interference portion is formed so as to bridge the pair of side wall portions and to be continuous with the bottom wall portion over the entire length thereof. With this configuration, the pair of side wall portions, the pair of support wall portions, and the bottom wall portion that are continuous with the interference portion are continuous with each other with their wall surfaces facing different directions to each other, and thus the rigidity is increased. Accordingly, the rigidity of the interference portion that is continuous with the wall portions is also increased, and thus incorrect attachment of the cover member can be reliably prevented. 
     (5) It is preferable that the interference portion is formed so as to extend along at least one of a front edge portion and a rear edge portion of the second opening portion, the cover member includes a pair of side plate portions that are arranged so as to extend along inner surfaces of the pair of side wall portions, and surround the connection portion between the core wire and the inner conductor, and a front-rear length of the pair of side plate portions is set to a length greater than a front-rear opening length of the second opening portion. With this configuration, the side plate portions that surround the connection portion between the core wire and the inner conductor do not interfere with the interference portion, and thus there is no need to form a portion on the cover member side that is dedicated to interference with the interference portion. Accordingly, the shape of the cover member can be prevented from becoming complex. 
     (6) In (5), it is preferable that a protrusion is formed on an insertion edge portion on a leading end of the pair of side plate portions in a direction in which the side plate portions are inserted into the first opening portion, and the protrusion is disposed in a region that does not correspond to the interference portion in a front-rear direction. With this configuration, when the cover member is attached within the connection space through the first opening portion, the protrusion is disposed in the opening region of the second opening portion without being hidden by the interference portion. Accordingly, a mold of a press machine can be abutted against the protrusion in the second opening portion and deform the side plate portions, and thus the connection portion between the core wire and the inner conductor can be surrounded by the cover member. By providing the protrusion, an operation for deforming the side plate portions using a mold of a press machine can be reliably performed. 
     DETAILED DESCRIPTION OF EMBODIMENT OF THE PRESENT DISCLOSURE 
     Embodiment 1 
     Embodiment 1 which is an embodiment of a shielded terminal of the present disclosure will be described with reference to  FIGS.  1  to  5   . Note that the present invention is not limited to these illustrative examples, but is indicated by the claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein. In Embodiment 1, regarding the front-rear direction, the left side in  FIGS.  1  to  5    is defined as the front side. The up and down directions of  FIGS.  1  to  5    are defined as the upward direction and the downward direction as they are. 
     As shown in  FIGS.  1  and  2   , the shielded terminal of Embodiment 1 includes a terminal fitting  10  and a shielded electrical wire  70 . As shown in  FIG.  3   , the terminal fitting  10  includes an inner conductor  11 , a dielectric body  15 , an outer conductor  20 , and a cover member  50 . As shown in  FIG.  3   , the inner conductor  11  has an overall elongated shape in the front-rear direction. The inner conductor  11  has a tubular main body portion  12 , a pair of elastic contact portions  13  that extend forward from the main body portion  12  in the manner of a cantilever, and a core wire crimping portion  14  that protrudes rearward in an open barrel shape from the main body portion  12 . The dielectric body  15  has a cylindrical shape whose axis extends in the front-rear direction. As shown in  FIG.  3   , the main body portion  12  and the elastic contact portions  13  of the inner conductor  11  are housed in the dielectric body  15 . The core wire crimping portion  14  protrudes rearward from the rear end surface of the dielectric body  15 . 
     The outer conductor  20  is a single component that is obtained by bending a metal plate member, and has an overall elongated shape in the front-rear direction. The outer conductor  20  has a tubular shielding portion  21 , a connection shielding portion  22 , and a crimping shielding portion  23 . The tubular shielding portion  21  constitutes the front end portion of the outer conductor  20 , and has a cylindrical shape whose axis extends in the front-rear direction. The main body portion  12  and the elastic contact portions  13  of the inner conductor  11  and the dielectric  15  are housed in their entirety in the tubular shielding portion  21 . 
     As shown in  FIG.  4   , the connection shielding portion  22  has one front wall portion  25 , a pair of side wall portions  26  that each have a flat plate shape and that are symmetrical in the left-right direction, a pair of stabilizers  27  that are not symmetrical in the left-right direction, and one interference portion  34 . The front wall portion  25  is continuous with the lower semi-circular region of the rear edge of the tubular shielding portion  21 , and protrudes in the manner of a flange from the outer circumference of the tubular shielding portion  21 . The lower edge of the front wall portion  25  extends in the left-right direction. The left and right side edges of the front wall portion  25  extend in the up-down direction. 
     The pair of side wall portions  26  are oriented such that the wall thickness directions thereof extend in the left-right direction, and are disposed spaced apart from each other in the left-right direction while extending parallel to each other. The front edges of the left and right side wall portions  26  are orthogonally continuous with the left and right side edges of the front wall portion  25 , respectively. Each stabilizer  27  protrudes upward from the front end portion of the upper edge of the corresponding side wall portion  26  (see  FIG.  3   ). 
     As shown in  FIG.  2   , a connection space  28  demarcated by the left and right side wall portions  26  is formed in the connection shielding portion  22 . The core wire crimping portion  14  of the inner conductor  11  is housed in the connection space  28 . The upper surface of the connection shielding portion  22  is provided with a first opening portion  31  that opens the connection space  28  to the outside upward of the connection shielding portion  22 . The first opening portion  31  is open in a region spanning the entire connection shielding portion  22  in the front-rear direction. 
     The lower surface of the connection shielding portion  22  is provided with a second opening portion  32  that opens the connection space  28  to the outside downward of the connection shielding portion  22 . The connection shielding portion  22  has a shape that is penetrated in the up-down direction by the connection space  28 , the first opening portion  31 , and the second opening portion  32 . The opening range in the front-rear direction of the second opening portion  32  is a region extending from a position rearward of the front end of the connection shielding portion  22  to a position forward of the rear end of the connection shielding portion  22 . That is, the front-rear opening length of the second opening portion  32  is smaller than the front-rear opening length of the first opening portion  31 . 
     As shown in  FIGS.  4  and  5   , the lower surface of the connection shielding portion  22  is provided with a front reinforcement portion  33 F and a rear reinforcement portion  33 R. The front reinforcement portion  33 F has a flat plate shape that is elongated in the left-right direction, and is disposed along the front edge of the opening edge of the second opening portion  32 . The front edge of the front reinforcement portion  33 F is orthogonally continuous with the lower edge of the front wall portion  25 . The left and right ends of the front reinforcement portion  33 F are orthogonally continuous to the front end portions of the lower edge portions of the left and right side wall portions  26 , respectively. The front reinforcement portion  33 F bridges the two side wall portions  26 . 
     Similarly to the front reinforcement portion  33 F, the rear reinforcement portion  33 R has a flat plate shape that is elongated in the left-right direction, and is disposed along the rear edge of the opening edge of the second opening portion  32 . The left and right ends of the rear reinforcement portion  33 R are orthogonally continuous with the rear end portions of the lower edge portions of the left and right side wall portions  26 , respectively. The rear reinforcement portion  33 R bridges the two side wall portions  26 . The rear reinforcement portion  33 R also functions as the interference portion  34  configured to abut against the later-described cover member  50 . The distance between the rear edge of the front reinforcement portion  33 F and the front edge of the rear reinforcement portion  33 R (interference portion  34 ) is the front-rear opening length of the second opening portion  32 . 
     The crimping shielding portion  23  includes a bottom wall portion  35 , a pair of support wall portions  36  that are symmetrical in the left-right direction, a pair of left and right shielding crimp pieces  37 , and a pair of left and right sheath crimp pieces  38 . The bottom wall portion  35  is continuous with the rear end of the rear reinforcement portion  33 R (interference portion  34 ) at an obtuse angle, and extends rearward from the rear reinforcement portion  33 R. The support wall portions  36  are continuous with the rear edges of the left and right side wall portions  26 , at an obtuse angle, and extend rearward from the side wall portions  26 , respectively. The lower edges of the support wall portions  36  are continuous with the front end portions of the left and right side edges of the bottom wall portion  35  at an angle close to 90 degrees, respectively. The rear end portions of the left and right side wall portions  26 , the interference portion  34 , the front end portion of the bottom wall portion  35 , and the left and right support wall portions  36  form a box portion that is open upward, forward, and rearward. 
     The shielding crimp pieces  37  protrude from the central portion in the front-rear direction of the left and right side edges of the bottom wall portion  35 , respectively. The bottom wall portion  35  and the shielding crimp pieces  37  constitute an open barrel-shaped shielding barrel portion  39 . The sheath crimp pieces  38  protrude from the central portion in the front-rear direction of the left and right side edges of the bottom wall portion  35 . The bottom wall portion  35  and the sheath crimp pieces  38  constitute an open barrel-shaped sheath barrel portion  40 . 
     A cover member  50  is formed by attaching a shielding member  51  and an insulating member  63  to each other. The shielding member  51  is formed by bending a metal plate member. The shielding member  51  is a single component that includes a connection portion surrounding portion  52  whose lower, front, and rear surfaces are open, a shielding surrounding portion  58 , and a connection piece  67 . 
     The connection portion surrounding portion  52  includes a horizontal substrate portion  53 , and a pair of side plate portions  54  that are symmetrical in the left-right direction and respectively extend downward from the left and right side edges of the substrate portion  53 . Each side plate portion  54  is provided with a locking hole  56  that extends through the side plate portion  54  in the thickness direction thereof. The bottom edges of the left and right side plate portions  54  (protruding edges from the substrate portion  53 ) are each provided with a pair of front and rear protrusions  55  that protrude to the side opposite from the substate portion  53 . The front protrusion  55  is located at the front end portion of the side plate portion  54 . The rear protrusion  55  is located at a position slightly forward of the rear end portion of the side plate portion  54 . The rear end portion of the lower edge portion of each slide plate portion  54 , that is, the portion rearward of the rear protrusion  55 , functions as an abutment portion  57  configured to abut against the interference portion  34 . 
     The front-rear length of the side plate portion  54  is smaller than the front-rear opening length of the first opening portion  31 . The front-rear opening length of the first opening portion  31  is the distance between the rear end of the tubular shielding portion  21  and the front end of the shielding barrel portion  39  (shielding crimp pieces  37 ). The front-rear length of each side plate portion  54  is set to a length greater than the front-rear opening length of the second opening portion  32 . The front-rear opening length of the second opening portion  32  is the distance between the rear end of the front reinforcement portion  33 F and the front end of the rear reinforcement portion  33 R. 
     The shielding surrounding portion  58  is continuous with the rear end portion of the substrate portion  53  and extends rearward from the connection portion surrounding portion  52 . The shielding surrounding portion  58  forms an open barrel shape including a base portion  59  that is continuous with the substrate portion  53 , and a pair of crimp portions  60  that respectively extend from the left and right side edges of the base portion  59 . The connection piece  67  is continuous with the front edge of the base substrate portion  53 , and protrudes bent to the front side of the substrate portion  53 . 
     The insulating member  63  is made of a synthetic resin, and has the same shape as the connection portion surrounding portion  52 . As shown in  FIGS.  3  and  5   , the insulating member  63  is a single component that includes an upper surface portion  64  that has a horizontal plate shape, and a pair of side surface portions  65  that extend downward from the left and right side edges of the upper surface portion  64 , respectively. The upper surface portion  64  is overlaid onto the inner surface of the substrate portion  53 , and the side surface portions  65  are respectively overlaid onto the inner surfaces of the side plate portions  54 . As shown in  FIG.  4   , the insulating member  63  is held attached to the shielding member  51  as a result of locking protrusions  66  provided on the outer surfaces of the side surface portions  65  being locked to the locking holes  56 . 
     The shielded electrical wire  70  is a known electrical wire that includes a core wire  71 , a tubular insulating body  72  that surrounds the core wire  71 , a tubular shielding layer  73  made of braided wires or the like arranged along the outer circumference of the tubular insulating body  72 , and a sheath  74  that surrounds the shielding layer  73 . The sheath  74  is removed from the front end portion of the shielded electrical wire portion  70  and thus the front end portion of the shielding layer  73  is exposed in a state of being overlaid on the outer circumference of the tubular insulating body  72 , and the core wire  71  is exposed from and protrudes forward from the front end of the tubular insulating body  72 . 
     Next, the procedure for assembling the shielded terminal will be described. The dielectric body  15  surrounding the inner conductor  11  and the outer conductor  20  are attached to each other. In this attached state, the inner conductor  11  is housed in the tubular shielding portion  21 , and the core wire crimping portion  14  of the inner conductor  11  protrudes rearward from the dielectric body  15  while being housed in the connection space  28  of the outer conductor  20 . The front end portion of the shielded electrical wire  70  and the crimping shielding portion  23  of the outer conductor  20  are connected to each other around the time that the inner conductor  11  and the outer conductor  20  are attached to other. At this time, the shielding barrel portion  39  is crimped to the outer circumference of the shielding layer  73  of the shielded electrical wire  70 , and the sheath barrel portion  40  is crimped to the outer circumference of the sheath  74 . 
     In a state where the shielded electrical wire  70  and the outer conductor  20  are connected to each other, the core wire  71  protruding forward from the tubular insulating body  72  is housed in the connection space  28 . In the connection space  28 , the core wire crimping portion  14  of the inner conductor  11  is electrically connected to the core wire  71  through crimping. Connection between the core wire  71  and the inner conductor  11  is performed by inserting an anvil and a crimper of an automatic machine (not shown) into the connection space  28  through the first opening portion  31  and the second opening portion  32 . 
     Once the dielectric body  15 , the inner conductor  11 , and the shielded electrical wire  70  have been attached to the outer conductor  20 , the cover member  50  is attached to the outer conductor  20 . When attaching the cover member  50 , the lower end portions of the left and right side plate portions  54  are oriented downward, and the shielding surrounding portion  58  is inserted into the first opening portion  31  from above the outer conductor  20 . Once the cover member  50  has been attached to the outer conductor  20 , the shielding surrounding portion  58  enters a state where it covers the outer circumference of the shielding barrel portion  39 , and the shielding surrounding portion  58  is crimped to the outer circumference of the shielding barrel portion  39 . The connection piece  67  elastically comes into contact with the outer circumference of the rear end portion of the tubular shielding portion  21 . 
     In the connection space  28 , the side plate portions  54  of the shielding member  51  and the side surface portions  65  of the insulating member  63  are pressed into a shape so as to surround the connection portion between the inner conductor  11  and the core wire  71 . The pressing is performed by inserting a mold of a press machine (not shown) into the connection space  28  through the first opening portion  31  and the second opening portion  32 . The protrusions  55  protrude from the lower edge of the side plate portions  54 , and thus the side plate portions  54  and the side surface portions  65  are bent in response to the protrusions  55  being hooked to the mold. 
     When attaching the cover member  50  and the outer diameter  20  to each other, as shown in  FIGS.  4  and  5   , if the connection portion surrounding portion  52  is housed in the connection space  28  from the second opening portion  32 , the shielding surrounding portion  58  cannot be properly crimped to the crimping shielding portion  23 . Also, the connection piece  67  cannot be properly connected to the tubular shielding portion  21 . 
     As a means for preventing the cover member  50  from being attached to the second opening portion  32 , in Embodiment 1, the interference portion  34  is provided on the opening edge of the second opening portion  32 . By providing the interference portion  34 , the front-rear opening length of the second opening portion  32  can be made smaller than the front-rear length of the side plate portions  54  of the cover member  50 . Accordingly, if an attempt is made to attach the cover member  50  to the second opening portion  32  from the outer surface side of the outer conductor  20 , once the protrusions  55  have first moved into the second opening  32 , the abutment portions  57  at the rear ends of the side plate portions  54  abut against the interference portion  34  from the outer side, as shown in  FIG.  5   . Accordingly, the side plate portions  54  are prevented from further entering the second opening  32  (connection space  28 ). 
     The shielded terminal of Embodiment 1 includes the outer conductor  20 , the shielded electrical wire  70 , the inner conductor  11 , the cover member  50 , and the interference portion  34 . The outer conductor  20  has the connection space  28  sandwiched between the pair of side wall portions  26 , and the connection space  28  is open to the outside via the first opening portion  31  and the second opening portion  32 . The shielding layer  73  of the shielded electrical wire  70  is connected to the crimping shielding portion  23  of the outer conductor  20 . The inner conductor  11  is housed in the tubular shielding portion  21  of the outer conductor  20  and is connected to the core wire  71  of the shielded electrical wire  70  in the connection space  28 . 
     The cover member  50  is a member that is attached within the connection space  28  through the first opening portion  31 , and surrounds the connection portion between the core wire  71  and the inner conductor  11 . The opening edge portion of the second opening portion  32  is provided with the interference portion  34  that interferes with the cover member  50 . When an attempt is made to attach the cover member  50  to the second opening portion  32 , interference occurs between the cover member  50  and the interference portion  34 , and thus the cover member  50  cannot be attached to the second opening portion  32 . Accordingly, with the shielded terminal of Embodiment 1, incorrect attachment of the cover member  50  to the outer conductor  20  can be prevented. 
     The interference portion  34  bridges the pair of side wall portions  26 . The interference portion  34  is more rigid than an interference portion that protrudes from the side wall portions  26  in the manner of a cantilever, and thus incorrect attachment of the cover member  50  can be reliably prevented. 
     The outer conductor  20  has the crimping shielding portion  23  that is crimped to the shielding layer  73  of the shielded electrical wire  70 . The crimping shielding portion  23  has the pair of support wall portions  36  that are diagonally continuous with the rear edge portions of the pair of side wall portions  26 , and the bottom wall portion  35  that links the pair of support wall portions  36  to each other on the rear side of the second opening portion  32 . The interference portion  34  is formed so as to span the distance between the pair of side wall portions  26 , and to be continuous with the bottom wall portion  35  over the entire length thereof. 
     The interference portion  34  is continuous with the crimping shielding portion  23 , the pair of side wall portions  26 , the pair of support wall portions  36 , and the bottom wall portion  35 . The interference portion  34  of Embodiment 1 is more rigid than an interference portion that protrudes from the side wall portions  26  or the crimping shielding portion  23  in the manner of a cantilever. Furthermore, the pair of side wall portions  26 , the pair of support wall portions  36 , and the bottom wall portion  35  are continuous with each other with their wall surfaces facing different directions to each other, and thus the rigidity is increased. Accordingly, the rigidity of the interference portion  34  that is continuous with the wall portions  26 ,  35 , and  36  is also further increased. Thus, incorrect attachment of the cover member  50  can be reliably prevented. 
     The interference portion  34  is formed so as to extend along the rear edge portion of the second opening portion  32 . The cover member  50  has the pair of side plate portions  54 . The pair of side plate portions  54  are arranged so as to extend along the inner surfaces of the pair of side wall portions  26 , and surround the connection portion between the core wire  71  and the inner conductor  11 . The front-rear length of the pair of side plate portions  54  is set to be larger than the front-rear opening length of the second opening portion  32 . With this configuration, the side plate portions  54  that surround the connection portion between the core wire  71  and the inner conductor  11  do not interfere with the interference portion  34 , and thus there is no need to form a portion on the cover member  50  side that is dedicated to interference with the interference portion  34 . Accordingly, the shape of the cover member  50  can be prevented from becoming complex. 
     The protrusions  55  are formed on the insertion edge portions on the leading end of the pair side plate portions  54  in a direction in which the side plate portions  55  are inserted into the first opening portion  31 . The protrusions  55  are disposed in regions that do not correspond to the interference portion  34  in the front-rear direction. With this configuration, when the cover  50  is attached within the connection space  28  through the first opening portion  31 , the protrusions  55  are disposed in the opening region of the second opening portion  32  without being hidden by the interference portion  34 . Accordingly, the mold of the press machine can be abutted against the protrusions  55  in the second opening portion  32  and deform the side plate portions  54 , and thus the connection portion between the core wire  71  and the inner conductor  11  can be surrounded by the cover member  50 . By providing the protrusions  55 , an operation for deforming the side plate portions  54  using a mold of a press machine can be reliably performed. 
     Other Embodiments 
     The present invention described herein is not limited to the embodiments thus described using the above description and drawings but is indicated by the claims. All changes that come within the meaning and range of equivalency of the claims as well as embodiments such as the following are intended to be embraced in the present invention. 
     In Embodiment 1, the interference portion is provided on the rear edge portion of the second opening portion, but the interference portion may be formed on the front edge portion or a side edge portion of the second opening portion. 
     In Embodiment 1, the interference portion bridges the pair of side wall portions, but the interference portion may protrude from a side wall portion in the manner of a cantilever. 
     In Embodiment 1, the interference portion is continuous with the pair of side wall portions and the crimping shielding portion, but the interference portion may be continuous with either the side wall portions or the crimping shielding portion. 
     In Embodiment 1, the side plate portions of the cover member interfere with the interference portion, but the interference portion may interfere with a different portion from the side plate portions. 
     In Embodiment 1, the protrusions are formed on the insertion edge portion of each side plate portion, but a configuration where the side wall portions do not include the protrusions is possible. 
     LIST OF REFERENCE NUMERALS 
       10  Terminal fitting 
       11  Inner conductor 
       12  Main body portion 
       13  Elastic contact portion 
       14  Core wire crimping portion 
       15  Dielectric body 
       20  Outer conductor 
       21  Tubular shielding portion 
       22  Connection shielding portion 
       23  Crimping shielding portion 
       25  Front wall portion 
       26  Side wall portion 
       27  Stabilizer 
       28  Connection space 
       31  First opening portion 
       32  Second opening portion 
       33 F Front reinforcement portion 
       33 R Rear reinforcement portion 
       34  Interference portion 
       35  Bottom wall portion 
       36  Support wall portion 
       37  Shielding crimp piece 
       38  Sheath crimp piece 
       39  Shielding barrel portion 
       40  Sheath barrel portion 
       50  Cover member 
       51  Shield member 
       52  Connection portion surrounding portion 
       53  Substrate portion 
       54  Side plate portion 
       55  Protrusion 
       56  Locking hole 
       57  Abutment portion 
       58  Shielding surrounding portion 
       59  Base portion 
       60  Crimp portion 
       63  Insulating member 
       64  Upper surface portion 
       65  Side surface portion 
       66  Locking protrusion 
       67  Connection piece 
       70  Shielded electrical wire 
       71  Core wire 
       72  Tubular insulating body 
       73  Shielding layer 
       74  Sheath