Patent Publication Number: US-10770822-B2

Title: Shield terminal

Description:
BACKGROUND 
     Field of the Invention 
     The invention relates to a shield terminal. 
     Related Art 
     Japanese Unexamined Patent Publication No. 2012-129103 discloses a shield terminal with an outer terminal, an inner terminal and a dielectric. A holding portion is formed in a front part of the outer terminal and the dielectric is held in the holding portion. The inner terminal is mounted in the dielectric, and is connected to a core of a shielded cable. A crimping portion in the form of an open barrel is formed in a rear end part of the outer terminal, and is connected to a shield layer of the shielded cable. The holding portion of the outer terminal has a half-divided shape. When the outer terminal and a mating outer terminal are connected, the holding portion of the outer terminal and a holding portion of the mating outer terminal having a half-divided shape are united to surround the dielectric over the entire periphery. 
     With the holding portions of the outer terminals united, a clearance may be formed between the holding portions and a shielding function may be reduced due to this clearance. As a countermeasure against this, it is considered to form the holding portion into a tubular shape continuous over the entire periphery. However, if the holding portion is formed into a tubular shape, the dielectric may interfere with the crimping portion to make an operation difficult when an attempt is made to mount the dielectric into the holding portion from the side of the crimping portion. 
     The invention was completed on the basis of the above situation and aims to improve assembling workability and improve the reliability of a shielding function. 
     SUMMARY 
     The invention is directed to a shield terminal with an inner conductor to be connected to a front end part of a core of a shielded cable, a dielectric configured to accommodate the inner conductor, and a tubular member constituting an outer conductor. The tubular member surrounds and holds the dielectric. A connecting member is separate from the tubular member and constitutes the outer conductor. The connecting member includes a crimping portion connectable to a shield layer of the shielded cable and a hook formed on a front end part of the connecting member. The hook is lockable to a rear end of the tubular member. A guide means is configured to guide the connecting member to a proper assembly position while allowing the connecting member to swing with the hooking portion as a fulcrum. 
     The dielectric is surrounded by the tubular member. Thus, the reliability of a shielding function is improved. The crimping portion is not present behind the tubular member in a state before the connecting member is assembled with the tubular member. Thus, work efficiency is good when mounting the dielectric into the tubular member from behind is good. Further, the connecting member is guided by the guide means when assembling the connecting member with the tubular member for further improving work efficiency. 
     The crimping portion may be crimped to an outer periphery of the shield layer, and the hook may be locked to an inner peripheral edge part of the tubular member. According to this configuration, the front part of the connecting member is going to be lifted and displaced radially outward by a reaction force during crimping in crimping the crimping portion to the shield layer. However, the hook formed on the front end part of the connecting member is locked to an inner edge part of a rear end part of the tubular member. Thus, the lift of the front end part of the connecting member can be prevented. 
     The guide means is formed in the connecting member and the dielectric. According to this configuration, the shape of the tubular member can be simplified as compared to the case where the tubular member is formed with a guide means. 
     The guide means may include a guide pin formed on one of the dielectric and the connecting member and a guide groove formed in the other of the dielectric and the connecting member. The guide pin may slide in contact with the guide groove. According to this configuration, the tubular member need not be formed with the guide means. Thus, the shape of the tubular member can be simplified. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIG. 1  is a perspective view of a shield connector. 
         FIG. 2  is a side view in section of the shield connector. 
         FIG. 3  is an exploded perspective view of a shield terminal. 
         FIG. 4  is a side view in section of an upper member. 
         FIG. 5  is a perspective view showing a state before inner conductors and cores are connected. 
         FIG. 6  is a perspective view showing a state where a lower member is being assembled with a tubular member and a dielectric. 
         FIG. 7  is a side view in section showing the state where the lower member is being assembled with the tubular member and the dielectric. 
         FIG. 8  is a side view showing the state where the lower member is being assembled with the tubular member and the dielectric. 
         FIG. 9  is a side view showing a state where the lower member is assembled with the tubular member and the dielectric. 
         FIG. 10  is a perspective view showing a state where the upper member is being assembled with the tubular member and the lower member. 
         FIG. 11  is a side view showing the state where the upper member is being assembled with the tubular member and the lower member. 
         FIG. 12  is a side view in section showing the state where the upper member is being assembled with the tubular member and the lower member. 
         FIG. 13  is a side view showing a state where the assembling of the tubular member, the lower member and the upper member is completed. 
         FIG. 14  is a perspective view of the shield terminal showing the state where the assembling of the tubular member, the lower member and the upper member is completed. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, one specific embodiment of the present invention is described with reference to  FIGS. 1 to 14 . Note that, in the following description, a left side in  FIGS. 1 to 14  is defined as a front side concerning front-rear directions of a shield connector  1  and a shield terminal T. Upper and lower sides shown in  FIGS. 1 to 14  are directly defined as upper and lower sides concerning a vertical direction. 
     The shield connector  1  includes a housing  2  made of synthetic resin and the shield terminal T. As shown in  FIG. 2 , a terminal accommodation chamber  3  extends through the housing  2  from the front end to the rear end, and the shield terminal T is inserted into the terminal accommodation chamber  3  from behind the housing  2 . A resiliently deflectable locking lance  4  is formed at an upper surface part of the terminal accommodation chamber  3  and restricts the rearward escape of the shield terminal T from the terminal accommodation chamber  3 . Further, a lower surface part of the terminal accommodation chamber  3  is formed with a front stop  5  for stopping the shield terminal T inserted into the terminal accommodation chamber  3  and preventing further forward movement. 
     As shown in  FIG. 3 , the shield terminal T is configured by assembling an outer conductor  10  made of metal, a dielectric  46  made of synthetic resin and inner conductors  52  made of metal. The outer conductor  10  is configured by assembling a body  11  and an upper member  35 , which is a single component separate from the body  11 . The body  11  is configured by assembling a tubular member  12  and a lower member  18  (connecting member as claimed). The tubular member  12  and the lower member  18  are separate components. That is, the outer conductor  10  is configured by assembling three components, i.e. the tubular member  12 , the upper member  35  and the lower member  18 . 
     The tubular member  12  is a single member formed into a substantially rectangular tube shape by applying bending and the like to a metal plate material having a predetermined shape. The tubular member  12  has such rigidity and shape retention so as not to be expanded and deformed. Four resilient contact pieces  13  are formed respectively in front end areas of four plate parts constituting the tubular member  12 . Each resilient contact piece  13  is cantilevered obliquely inward toward the front by cutting and raising a part of each platepart. These resilient contact pieces  13  resiliently contact the outer peripheral surface of a mating outer conductor (not shown). 
     A rear end area of the tubular member  12  is a substantially rectangular tubular holding portion  14  for holding the dielectric  46 . As shown in  FIG. 3 , a first locking portion  15  in the form of a window, a second locking portion  16  formed by cutting the rear end edge of the holding portion  14  and a third locking portion  17  in the form of a window are formed in each of left and right side plate parts of the holding portion  14 . The second locking portions  16  are at positions below and behind the first locking portions  15 . The third locking portions  17  are at positions below the first locking portions  15  and in front of the second locking portions  16 . 
     The lower member  18  is formed by applying bending and the like to a metal plate. A front area of the lower member  18  serves as a first cover  19  in which left and right inner plate parts  21  rise from both left and right side edges of a lower plate part  20 . A first hook  22  is formed on the lower plate part  20  of the first cover  19 . The first hook  22  is in the form of a rib projecting along a front end edge and is shaped into a step ascending with respect to the lower plate part  20  in a side view. The lower plate part  20  of the first cover  19  is formed with a butting portion  23  struck to project down (outwardly of the lower plate part  20 ). 
     First and second guide grooves  24  and  25  are formed in each of the left and right inner plate parts  21  of the first cover  19 . The first guide groove  24  is formed by being cut obliquely down toward the rear from an upper end part of the front edge of the inner plate part  21  and the second guide groove  25  is formed by being cut obliquely down toward the front from an upper part of the rear edge of the inner plate part  21 . A first stopper  26  in the form of a projection is formed at a position of an upper edge part of the first guide groove  24  near a rear end. A second stopper  27  in the form of a projection is formed at a position of an upper edge part of the second guide groove  25  near a front end. The first guide grooves  24  constitute a first guide means  28 , and the second guide grooves  25  constitute a second guide means  29 . 
     A fourth locking portion  30  in the form of a window and a fifth locking portion  31  in the form of a window are formed in each of the left and right inner plate parts  21  of the first cover  19 . The fourth and fifth locking portions  30 ,  31  are in a vertically arranged positional relationship, and the fifth locking portion  31  is disposed at a position below the fourth locking portion  30 . The fourth and fifth locking portions  30 ,  31  are disposed between the rear end of the first guide groove  24  and the front end of the second guide groove  25  in the front-rear direction. 
     A crimping portion  32  in the form of an open barrel is formed on a rear end area of the lower member  18 . The crimping portion  32  includes a base plate part  33  having a substantially arcuate cross-section and extending rearward from the rear end of the lower plate part  20  of the first cover  19 , and two bilaterally asymmetrical crimping pieces  34  rise from both left and right side edges of the base plate part  33 . The crimping portion  32  is conductively fixed to the outer periphery of a shield layer  65  of a shielded cable  60 . 
     The upper member  35  is formed by applying bending and the like to a metal plate. A front area of the upper member  35  serves as a second cover  36  in which left and right outer plate parts  38  extend down from both left and right side edges of an upper plate part  37 . A second hook  39  is formed on the upper plate part  37  of the second cover  36 . The second hook  39  is a rib projecting along a front end edge and is shaped into a step descending with respect to the upper plate part  37  in a side view. The upper plate part  37  is formed with a retaining projection  40  struck to project up (outwardly of the upper plate part  37 ). 
     Front end parts of the both left and right outer plate parts  38  of the second cover  36  project farther forward than the second hook  39  (front end of the upper plate part  37 ) and function as closing plate parts  41 . A third locking projection  42  projecting inward, a fifth locking projection  43  projecting inward and a second guide pin  44  projecting inward are formed on each of the left and right outer plate parts  38 . The third locking portions  17  are disposed on front end parts (closing plate parts  41 ) of the outer plate parts  39 . The fifth locking portions  31  are disposed at positions behind the second hook  39 . The second guide pins  44  are disposed at positions behind and above the fifth locking portions  31 . The second guide pins  44  constitute the second guide means  29 . 
     A rear end area of the upper member  35  is formed with a fixing portion  45  extending rearward from the rear end of the upper plate part  37 . The fixing portion  45  has a substantially arcuate cross-sectional shape to face the crimping portion  32  of the lower member  18  from above. The fixing portion  45  is disposed to vertically sandwich a front part of the shield layer  65  of the shielded cable  60  between the crimping portion  32  and the fixing portion  45 . 
     The dielectric  46  is made of synthetic resin and is in the form of a block. Conductor accommodation chambers  47  are formed inside the dielectric  46  and are elongated in the front-rear direction. The conductor accommodation chambers  47  are disposed in separate upper and lower stages and are vertically symmetrical. In a rear end part of the dielectric  46 , rear end parts of the conductor accommodation chambers  47  in the upper stage are exposed to an upper-outer side and rear end parts of the conductor accommodation chambers  47  in the lower stage are exposed to a lower-outer side. 
     A first locking projection  48 , a second locking projection  49 , a fourth locking projection  50  and a first guide pin  51  (guide pin as claimed) are formed on each of left and right side surfaces of the dielectric  46 . The first locking projections  48  are at upper end positions on front end parts of outer side surfaces of the dielectric  46 . The second locking projections  49  are at positions below and slightly behind the first locking projections  48 . The fourth locking projections  50  are on rear end parts of the outer side surfaces of the dielectric  46 . The first guide pins  51  are at positions behind the first and second locking projections  48 ,  49  and in front of the fourth locking projections  50 . The first guide pins  51  constitute the first guide means  28 . 
     The inner conductor  52  is made of metal and has an elongated shape in the front-rear direction as a whole. The inner conductor  52  is formed with a rectangular tubular conductor body  53 , an elongated tab  54  cantilevered forward from the conductor body  53  and a wire connecting portion  55  extending rearward from the conductor body  53 . Each inner conductor  52  is accommodated into the conductor accommodation chamber  47  from behind the dielectric  46 . The inner conductors  52  inserted in the conductor accommodation chambers  47  in the upper stage and the inner conductors  52  inserted in the conductor accommodation chambers  47  in the lower stage are oriented vertically symmetrically. 
     With the inner conductors  52  mounted in the dielectric  46 , the conductor bodies  53  are held in the conductor accommodation chambers  47  and the tabs  54  project forward from the front end surface of the dielectric  46 . Further, the wire connecting portions  55  are exposed upwardly of the dielectric  46  in the conductor accommodation chambers  47  in the upper stage, and the wire connecting portions  55  are exposed downwardly of the dielectric  46  in the conductor accommodation chambers  47  in the lower stage. Cores  62  of the shielded cable  60  are connected to the respective wire connecting portions  55  by soldering. 
     The shielded cable  60  to which the shield terminal T is connected includes thin coated wires  61 , the shield layer  65  formed of a braided wire for surrounding the coated wires  61  in a bundled state and a hollow cylindrical sheath  64  surrounding the shield layer  65 . The coated wire  61  is composed of the core  62  and an insulation coating  63  surrounding the core  62 , and extends forward from the front end of the sheath  64 . A front part of the core  62  is exposed by removing the insulation coating  63 . A front part of the shield layer  65  extending from the front end of the sheath  64  is folded rearward on an outer peripheral side to cover the outer periphery of the sheath  64 . 
     Next, an assembling procedure of the shield connector  1  of this embodiment is described. First, the inner conductors  52  are mounted into the dielectric  46  and, thereafter, the dielectric  46  is inserted into the tubular member  12  from behind to be assembled. As shown in  FIG. 5 , with the dielectric  46  mounted in the tubular member  12 , the front area of the dielectric  46  is fit in the holding portion  14  of the tubular member  12  and the tabs  54  are surrounded collectively by the tubular member  12 . 
     The tubular member  12  and the dielectric  46  are held in the assembled state by the locking of the first locking portions  15  and the first locking projections  48  and by the locking of the second locking portions  16  and the second locking projections  49 . That is, the tubular member  12  and the dielectric  46  are positioned with relative displacements restricted in the front-rear direction, vertical direction and lateral direction. Further, the fourth locking projections  50 , the first guide pins  51  and the wire connecting portions  55  of the inner conductors  52  are exposed at positions behind the tubular member  12 . 
     After the dielectric  46  is mounted into the tubular member  12 , the front parts of the cores  62  of the shielded cable  60  are connected conductively to the wire connecting portions  55  of the respective inner conductors  52  by soldering. At this time, the cores  62  are placed into the wire connecting portions  55  in the upper stage from above and soldered. The cores  62  are placed into and soldered to the wire connecting portions  55  in the lower stage with the dielectric  46  and the tubular member  12  vertically inverted. 
     After all the cores  62  are connected to the wire connecting portions  55 , the lower member  18  is assembled with the tubular member  12  and the dielectric  46 . In mounting the lower member  18 , the first guide pins  51  are caused to enter the entrances (front end parts) of the first guide grooves  24  and the first hook  22  of the lower member  18  is locked to a lower edge of the rear end of the tubular member  12  (holding portion  14 ), as shown in  FIGS. 6 and 7 , and the lower member  18  is swung upward with the locking position as a fulcrum. A swing direction of the lower member  18  during this assembling operation is a direction intersecting an axis of the shielded cable  60 . 
     In the process of swinging the lower member  18 , the first guide pins  51  slide along edges of the first guide grooves  24 , as shown in  FIG. 8  so that a swing trajectory of the lower member  18  is stabilized in the vertical direction and front-rear direction. Further, the left and right inner plate parts  21  slide in contact with the outer side surfaces of the dielectric  46  to position the lower member  18  in the lateral direction with respect to the dielectric  46  and the tubular member  12 . As shown in  FIG. 9 , when the first guide pins  51  reach the back ends of the first guide grooves  24 , the assembling of the lower member  18  with the tubular member  12  and the dielectric  46  is completed and the body  11  of the outer conductor  10  is configured. 
     With the assembling of the body  11  completed, the first guide pins  51  are locked to the first stoppers  26  and are held in back end parts of the first guide grooves  24 . Additionally, the first hook  22  is locked conductively to the rear end edge of the tubular member  12  and the fourth locking portions  30  and the fourth locking projections  50  are locked to each other. Thus, the lower member  18 , the tubular member  12  and the dielectric  46  are held in the assembled state with relative displacements in the front-rear direction and vertical direction restricted. 
     With the lower member  18  mounted on the tubular member  12  and the dielectric  46 , an area of the lower member  18  except the first hook  22  is entirely behind and continuous with the tubular member  12 . Further, the first cover  19  of the lower member  18  covers side surface parts of the dielectric  46  in an area behind the tubular member  12 , exposed areas of the front end parts of the cores  62  and the wire connecting portions  55  of the inner conductors  52  mounted in the conductor accommodation chambers  47  in the lower stage. Further, the crimping portion  32  covers a lower surface area of the outer periphery of the front end part of the shield layer  65 . 
     Thereafter, the upper member  35  is assembled with the body  11 . More particularly, the second guide pins  44  are caused to enter the entrances (rear end parts) of the second guide grooves  25  and the second hook  39  of the upper member  35  is locked to an upper edge of the rear end of the tubular member  12  (holding portion  14 ), as shown in  FIGS. 10, 11 and 12 . Additionally, the upper member  35  is swung down with the locking position as a fulcrum. A swing direction during this assembling operation is a direction intersecting the axis of the shielded cable  60 . 
     In the process of swinging the upper member  35 , the second guide pins  44  slide along edges of the second guide grooves  25  to stabilize a swing trajectory of the upper member  35  in the vertical direction and front-rear direction. Further, the left and right outer plate parts  38  slide in contact with the outer surfaces of the inner plate parts  21  of the lower member  18  to position the upper member  35  in the lateral direction with respect to the body  11 . As shown in  FIG. 13 , assembly of the upper member  35  with the body  11  is completed and the shield terminal T is configured when the second guide pins  44  reach the ends (front ends) of the second guide grooves  25 . 
     With the assembling of the upper member  35  completed, the second guide pins  44  are locked to the second stoppers  27  and are held in back end parts of the second guide grooves  25 . Additionally, the second hook  39  is locked conductively to the rear edge of the tubular member  12 , the third locking portions  17  and the third locking projections  42  are locked conductively to each other, and the fifth locking portions  31  and the fifth locking projections  43  are locked conductively to each other. Thus, the body  11  and the upper member  35  are held in the assembled state with relative displacements in the front-rear direction and vertical direction restricted. 
     With the upper member  35  mounted on the body  11 , an area of the upper member  35  except the second hook  39  is located entirely to be behind and continuous with the tubular member  12 , and the upper member  35  and the lower member  18  are positioned to vertically face each other across the front end part of the shielded cable  60  and the rear end part of the dielectric  46 . Further, the second cover  36  of the upper member  35  covers an inner side part of the first cover  19 , the exposed areas of the front end parts of the cores  62  and the wire connecting portions  55  of the inner conductors  52  mounted in the conductor accommodation chambers  47  in the upper stage. 
     Further, the closing plate parts  41  of the upper member  35  cover: locking parts of the first locking portions  15  and the first locking projections  48 , locking parts of the second locking portions  16  and the second locking projections  49 , the third locking portions  17 , locking parts of the fourth locking portions  30  and the fourth locking projections  50 , the fifth locking portions  31 , fitting parts of the first guide grooves  24  and the first guide pins  51  and fitting parts of the second guide grooves  25  and the second guide pins  44 . 
     The first and second covers  19 ,  36  are connected conductively in locking parts of the third locking portions  17  and the third locking projections  42  and locking parts of the fifth locking portions  31  and the fifth locking projections  43 . The front ends of the cores  62  and the wire connecting portions  55  of the inner conductors  52  are surrounded over the entire periphery by the first and second covers  19 ,  36  having a shielding function between the rear end of the tubular member  12  and the front end of the shield layer  65 . 
     Further, the fixing portion  45  covers an upper surface area of the outer periphery of the front end part of the shield layer  65  and vertically sandwich the front end part of the shield layer  65  between the crimping portion  32  and the fixing portion  45 . After the upper member  35  is assembled, the crimping portion  32  is crimped to the outer peripheries of the fixing portion  45  and the shield layer  65 , as shown in  FIG. 14 . During crimping, the crimping pieces  34  are crimped into close contact with the outer periphery of the fixing portion  45 . In this way, the inner peripheral surface of the base plate part  33  of the crimping portion  32  and the inner peripheral surface of the fixing portion  45  entirely surround the outer periphery of the shield layer  65  and are fixed conductively. In the above way, the assembling of the shield terminal T is completed. 
     Thereafter, the shield terminal T is inserted into the housing  2  from behind. Any further forward movement of the shield terminal T in an inserting direction is restricted by the butting portion  23  butting against the front stop  5  and the rearward escape thereof is restricted by locking the retaining projection  40  by the locking lance  4 . Thus, the shield terminal T is retained and held. A rubber plug  66  and a rear holder  67  externally fit on the shielded cable  60  in advance subsequently are mounted in a rear end part of the housing  2  to complete the assembling of the shield connector  1 . 
     The shield terminal T of this embodiment includes the inner conductors  52  to be connected to the front parts of the cores  62  of the shielded cable  60 , the dielectric  46  for accommodating the inner conductors  52 , the outer conductor  10  and the first guide means  28 . The outer conductor  10  includes the tubular member  12  for surrounding and holding the dielectric  46 , and the lower member  18  separate from the tubular member  12  and having the crimping portion  32  connectable to the shield layer  65  of the shielded cable  60 . The first hook  22  is formed on the front end part of the lower member  18  and is lockable to the rear edge of the tubular member  12 . The first guide means  28  guides the lower member  18  to a proper assembly position while allowing the lower member  18  to swing with the first hook  22  as a fulcrum. 
     The dielectric  46  is surrounded by the tubular member  12  in the shield terminal T. Thus, the reliability of the shielding function is high. Further, since the crimping portion  32  is not present behind the tubular member  12  in a state before the lower member  18  is assembled with the tubular member  12 , work efficiency in mounting the dielectric  46  into the tubular member  12  from behind is good. Further, work efficiency is good since the lower member  18  is guided by the first guide means  28  when assembling the lower member  18  with the tubular member  12 . 
     Further, the crimping portion  32  is in the form of an open barrel and is crimped to the outer periphery of the shield layer  65 . The first hook  22  is locked to an inner peripheral edge of the tubular member  12 . In crimping the crimping portion  32  to the shield layer  65 , the front part of the lower member  18  is going to be lifted and displaced radially outward (downwardly of the tubular member  12 ) by a reaction force during crimping. However, the first hook  22  formed on the front part of the lower member  18  is locked to the inner edge of the rear end part of the tubular member  12 . Thus, the front end part of the lower member  18  cannot be lifted. 
     Further, the first guide means  28  is formed in the lower member  18  and the dielectric  46 . Thus, the shape of the tubular member  12  can be simplified as compared to the case where the tubular member  12  is formed with a guide means. Further, the first guide means  28  is composed of the first guide pins  51  formed on the dielectric  46  and the first guide grooves  24  formed in the lower member  18 , with the first guide pins  51  sliding in contact with the first guide grooves  24 . According to this configuration, the tubular member  12  need not be formed with any guide means. Thus, the shape of the tubular member  12  can be simplified. 
     Further, the shield terminal T of this embodiment includes the outer conductor  10  and the second guide means  29 . The outer conductor  10  is configured by assembling the body  11  and the upper member  35 . The body  11  includes the tubular holding portion  14  for surrounding and holding the dielectric  46  and the crimping portion  32  to be connected to the front end part of the shield layer  65  of the shielded cable  60 . The upper member  35  is separate from the body  11  and surrounds the cores  62  over the entire periphery together with the body  11  between the rear end of the holding portion  14  and the front end of the shield layer  65 . Since the body  11  and a cover surround the cores  62  over the entire periphery between the rear end of the holding portion  14  and the front end of the shield layer  65 , the reliability of the shielding function is improved. 
     Further, the second hook  39  is formed on the front part of the upper member  35  and is lockable to the rear end edge of the holding portion  14 . The second guide means  29  guides the upper member  35  to a proper assembly position while allowing the upper member  35  to swing with the second hook  39  as a fulcrum. According to this configuration, the upper member  35  is guided efficiently by the second guide means  29  when assembling the upper member  35  with the body  11 . 
     Further, the upper member  35  is formed with the fixing portion  45  to be crimped to the outer periphery of the shield layer  65 , and the second hook  39  is locked to an inner peripheral edge of the holding portion  14 . According to this configuration, reaction forces generated when crimping the fixing portion  45  to the shield layer  65  urge the front part of the upper member  35  radially outward (upwardly of the upper member  35 ) by a reaction force during crimping. However, the second hook  39  on the front part of the upper member  35  is locked to the inner edge of the rear end part of the holding portion  14 . Thus, the front part of the upper member  35  cannot lift. 
     Further, the body  11  is configured by assembling the tubular member  12  formed with the holding portion  14  and the lower member  18  formed with the crimping portion  32 . According to this configuration, the crimping portion  32  is not present behind the tubular member  12  in the state before the lower member  18  is assembled with the tubular member  12 . Thus, the dielectric  46  can be mounted efficiently into the tubular member  12  from behind. 
     Further, since the second guide means  29  is formed in the upper member  35  and the lower member  18 , the shape of the tubular member  12  can be simplified as compared to the case where the tubular member  12  is formed with a guide means. Further, the second guide means  29  is composed of the second guide pins  44  formed on the upper member  35  and the second guide grooves  25  formed in the lower member  18 , with the second guide pins  44  sliding in contact with the second guide grooves  25 . According to this configuration, the tubular member  12  need not be formed with any guide means, and the shape of the tubular member  12  can be simplified. 
     The outer conductor  10  of the shield terminal T includes the tubular member  12  for surrounding and holding the dielectric  46 , the lower member  18  separate from the tubular member  12  and to be connected to the front end part of the shield layer  65  of the shielded cable  60 , and the upper member  35  to be connected to the front end part of the shield layer  65 . The lower member  18  and the upper member  35  constitute divided shells having a half-divided shape. The lower member  18  and the upper member  35  are formed with the first cover  19  and the second cover  36  for surrounding the cores  62  and the wire connecting portions  55  of the inner conductors  52  over the entire periphery between the rear end of the tubular member  12  and the front end of the shield layer  65 . 
     According to this configuration, the first and second covers  19 ,  36  surround the cores  62  and the wire connecting portions  55  over the entire periphery between the rear end of the tubular member  12  and the front end of the shield layer  65 . Thus, the reliability of the shielding function is high. Further, the divided shells (lower member  18  and upper member  35 ) formed with the first and second covers  19 ,  36  are separate from the tubular member  12  and half-divided. Thus, with the dielectric  46  and the inner conductors  52  mounted in the tubular member  12 , an operation of connecting the inner conductors  52  to the cores  62  can be performed. Therefore, the shield terminal T of this embodiment can reduce restrictions of the assembling process. 
     Further, the crimping portion  32  to be crimped to the outer periphery of the shield layer  65  is formed on the rear end part of the lower member  18 , and the first hook  22  to be locked to the inner edge part of the rear end part of the tubular member  12  is formed on the front end part of the lower member  18  formed with the crimping portion  32 . According to this configuration, a reaction force generated when crimping the crimping portion  32  to the shield layer  65  urges the front part of the lower member  18  radially outward of the lower member  18 . However, the first hook  22  formed on the front end part of the lower member  18  is locked to the inner edge of the rear end part of the tubular member  12  from inside (upper surface side). Thus, the front end part of the lower member  18  cannot be lifted radially outward. 
     Further, the shield terminal T includes the first guide means  28 . The first guide means  28  guides the lower member  18  to the proper assembly position while allowing the lower member  18  to swing with the first hook  22  as a fulcrum. Thus, the lower member  18  can be assembled with the tubular member  12  and the dielectric  46  without interfering with other members by the first guide means  28 . 
     Further, the upper member  35  is formed with the fixing portion  45  for covering a part of the outer periphery of the shield layer  65 . The lower member  18  is formed with the crimping portion  32  to be crimped to the outer periphery of the shield layer  65  and including the crimping pieces  34  to be crimped to the outer periphery of the fixing portion  45 . According to this configuration, the lower member  18  and the upper member  35  can be fixed to the shield layer  65  merely by a process of crimping the crimping portion  32  while crimping the crimping pieces  34  to the outer periphery of the fixing portion  45 . 
     The invention is not limited to the above described and illustrated embodiment. For example, the following embodiments also are included in the scope of the invention. 
     Although the first guide means is formed in the lower member (connecting member) and the dielectric in the above embodiment, the first guide means may be formed in the lower member and the tubular member. 
     Although the first guide pins are formed on the outer surface of the dielectric and the first guide grooves are formed in the lower member (connecting member) in the above embodiment, the first guide pins may be formed on the lower member and the first guide grooves may be formed in the dielectric. 
     Although the hooking portions are formed on both the lower member (connecting member) and the upper member in the above embodiment, a hook may be formed only on the lower member. 
     Although the crimping portion is formed only on the lower member (connecting member) in the above embodiment, crimping portions may be formed on both the lower member and the upper member. 
     Although both the lower member and the upper member are fixed to the shield layer only by the process of crimping the crimping portion of the lower member (connecting member) in the above embodiment, a process of fixing the upper member to the shield layer may be performed separately from a process of crimping the lower member to the shield layer. 
     Although the inner conductors and the cores are connected with the inner conductors mounted in the dielectric in the above embodiment, the present invention can be applied also when the inner conductors are mounted into the dielectric after being connected to the cores. 
     Although the inner conductor is a male terminal including an elongated tab in a front part in the above embodiment, the present invention can be applied also when the inner conductor is a female terminal including a rectangular tube portion in a front end part. 
     LIST OF REFERENCE SIGNS 
     
         
         T . . . shield terminal 
           10  . . . outer conductor 
           12  . . . tubular member 
           18  . . . lower member (connecting member) 
           22  . . . first hook (hook) 
           24  . . . first guide groove (guide groove) 
           28  . . . first guide means (guide means) 
           32  . . . crimping portion 
           46  . . . dielectric 
           51  . . . first guide pin (guide pin) 
           52  . . . inner conductor 
           60  . . . shielded cable 
           62  . . . core 
           65  . . . shield layer