Abstract:
Therein is provided with a connecting structure to the shield case of an apparatus so that a number of the connector parts are decreasing and that connecting operation is facilitated. The connector includes a insulative first housing fixed in a state of being inserted into a through hole, a first terminal held by the housing to face the through hole and connected to the electric circuit. The second housing of the electric wire side is fitted to the first housing. The second terminal is connected to the first terminal. Sealing rings are provided between the outer periphery of the housings and the through hole on outer-periphery of the housings so that the bracket fixed to the shield case is electrically connected to shield layer of the shield electric wire. A connecting member electrically connects the bracket and the shield layer outside of the second housing.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the invention  
           [0002]    The present invention relates to a structure of connecting an electric wire to a shield case of an apparatus.  
           [0003]    2. Description of the related art  
           [0004]    There is used a structure of connecting an electric wire to a shield case for connecting apparatus of an inverter apparatus, a motor and the like in, for example, electric motor. There is an electric wire connecting structure of this kind in which an electric wire side terminal is fixedly connected to an end portion of a conductor of a shield electric wire, the electric wire side terminal is connected to an apparatus side terminal provided at inside of a shield case of an apparatus and a shield layer of the shield electric wire is connected to a shield case via a conductive connecting member (refer to, for example, JP-A-2002-125348).  
           [0005]    Meanwhile, there is provided a shield connector of a prior art in which terminals are fixed by a bolt at inside of a shield case and according to such a constitution of connecting the terminals by fastening the bolt, there are needed an opening portion constituting an operating port for fastening the bolt, a lid for closing the opening portion to waterproof, a number of parts is liable to increase and the constitution cannot be regarded to be excellent in operability.  
         SUMMARY OF THE INVENTION  
         [0006]    It is an object thereof to provide a structure of connecting an electric wire to a shield case of an apparatus capable of being fabricated inexpensively by reducing a number of parts and capable of simply carrying out connecting operation. According to one aspect of the invention, there is provided with a connector including a metal shield case having an electric circuit, a first housing fixed in a state of being inserted into a through hole, a first terminal held by the firs housing to face the through hole and connected to the electric circuit, a seal ring provided at least on an outer periphery of the first housing for sealing an interval between the outer periphery of the first housing and the through hole, and a metal bracket fixed to the metal shield case, and a shield electric wire including; a center wire; a shield layer around the center wire electrically connected to the electric circuit, an insulative second housing fitted to the first housing by being inserted into the through hole; and an second terminal held by the second housing by being connected to the center wire of the shield electric wire and connected to the first terminal in fitting the second housing and the first housing to each other.  
           [0007]    Further, according to another aspect of the invention, the bracket is constituted to fix the electric wire side housing in a state of being fit to the apparatus side housing by being integrally provided to the electric wire side housing and fixed to the shield case.  
           [0008]    Further, according to yet another aspect of the invention, the apparatus side terminal includes a terminal main body penetrated in a front and rear direction through inside of the apparatus side housing and a fitting projected portion projected from the terminal main body to a front side, the electric wire side terminal is constituted to include a fitting recess portion constituted to insert the fitting projected portion to inside thereof, and the terminals are connected by fitting the fitting projected portion and the fitting recess portion to each other.  
           [0009]    According to yet another aspect of the invention, a plurality of the shield electric wires are provided and respective pluralities of the apparatus side terminals and the electric wire side terminals are provided to correspond to the respective shield electric wires.  
           [0010]    Further, according to yet another aspect of the invention, a plurality of the through holes are formed in the shield case and in at least either one housing of the apparatus side housing or the electric wire side housing, a plurality of housing elements inserted into the respective through holes are formed to be integrally continuous at external portions of the through holes.  
           [0011]    Further, according to yet another aspect of the invention, there is provided with a member for electrically connecting the bracket and the shield layer at an external portion of the electric wire side housing, wherein on the other hand, an inner portion of the electric wire side housing includes a cavity inserted with the shield electric wire and a seal member for sealing the shield electric wire and the electric wire side housing is arranged at an inner portion of the cavity.  
           [0012]    In the structure of connecting an electric wire to a shield case of an apparatus, connection between the electric wire side terminal provided on a side of the shield electric wire and the apparatus side terminal provided on a side of the, apparatus is carried out only fitting the electric wire side housing and the apparatus side housing and therefore, it is not necessary to connect the terminals by troublesome bolt fastening operation, and the invention is excellent in operability. Further, although when the terminals are connected by fastening a bolt, it is necessary to cover a cover for protection at a portion of connecting the terminals after fastening the bolt, according to the invention, there is constituted a state in which the two terminals are contained at inside of the attaching hole and therefore, it is not necessary to cover the cover and a number of parts can effectively be reduced. Further, there is constructed a constitution in which the apparatus side housing is inserted into the through hole, the seal ring is arranged at the surrounding of the apparatus side housing and therefore, oil or the like is prevented from invading from the side of the apparatus while constituting a structure of fitting the through hole and the apparatus side housing and protection of inside of the through hole is effectively carried out.  
           [0013]    According to the invention, the connecting serves a function as shield member and also serves as a function for attaching the electric wire side housing to the shield case and therefore, it is not necessary to provide a special member for attaching the electric wire side housing to the shield case, which contributes to a reduction in a number of parts, a reduction in cost or the like.  
           [0014]    According to the invention, a shape of the apparatus side terminal can be constituted by a simple shape without being complicated and therefore, there is constructed a constitution in which a clearance or the like is difficult to be brought about and waterproof performance is easy to ensure and the shape becomes also a shape excellent in water proof performance and easy to carry out molding.  
           [0015]    According to the invention, in a multi electrode structure in which a number of parts is increased and a shape thereof is liable to be complicated, a reduction in a number of parts and simplification of the shape are achieved to construct a constitution having high usefulness.  
           [0016]    According to the invention, in at least one of the housings, the plurality of housings are integrally formed and therefore, a number of parts can effectively be reduced.  
           [0017]    According to the invention, the electric connection is carried out by the connecting member at the external portion of the electric wire side housing and therefore, it is not necessary to provide a structure for the connection at inside of the electric wire side housing and an inner structure thereof can be simplified and therefore, (specifically, the inner structure can be constituted as a smooth inner peripheral face and therefore,) when the seal member for sealing the shield electric wire and the electric wire side housing are provided at the inner portion of the electric wire side housing, a constitution having a high seal effect is constructed. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0018]    [0018]FIG. 1 is a horizontal sectional view showing an integrated state of a first embodiment;  
         [0019]    [0019]FIG. 2 is a vertical sectional view of the integrated state;  
         [0020]    [0020]FIG. 3 is a horizontal sectional view enlarging an electric wire side connector;  
         [0021]    [0021]FIG. 4 is a vertical sectional view enlarging the electric wire side connector;  
         [0022]    [0022]FIG. 5 is a front view of the electric wire side connector;  
         [0023]    [0023]FIG. 6 is a rear view of the electric wire side connector;  
         [0024]    [0024]FIG. 7 is a horizontal sectional view of an apparatus side connector;  
         [0025]    [0025]FIG. 8 is a vertical sectional view of the apparatus side connector; and  
         [0026]    [0026]FIG. 9 is a front view of the apparatus side connector. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0027]    An explanation will be given of Embodiment 1 embodying the invention in reference to FIG. 1 through FIG. 9 as follows.  
         [0028]    As shown by FIG. 1 and FIG. 2, in a structure A of connecting an electric wire to a shield case of an apparatus according to the embodiment, an electric wire side connector  50  is connected to a distal end portion of a conductor  41  constituting a core line of a shield electric wire  40 , a shield layer  43  of the shield electric wire  40  is connected to a shield case  11  of an apparatus  10  (for example, an inverter apparatus of an electric car), and an electric wire side terminal  70  provided at the electric wire side connector  50  is connected to an electric wire side terminal  26  at inside of the shield case  11 .  
         [0029]    The apparatus  10  is constituted by containing an apparatus main body (not illustrated) at inside of the conductive shield case  11  and containing an apparatus side connector  20  connected to the apparatus main body similarly at inside of the shield case  11 . At an upper end portion of a side wall of the shield case  11 , three left and right circular attaching holes  12  (through holes which are constituent elements of the invention) penetrated in a front and rear direction are formed at a constant pitch. There is formed a bulged portion  13  in a mode of projecting opening regions of the three attaching holes  12  and peripheral edge regions thereof to an outer side at an outer face of the shield case  11 . An outer periphery of the bulged portion  13  is constituted by a comparatively simple shape (for example, an oval shape, a rectangular shape corners of which are rounded in an arc-like shape a trapezoidal shape corners of which are rounded in an arc-like shape, or the like) by making flat faces and curved faces smoothly continuous, a projected end face (left end face in FIG. 1 and FIG. 2) of the bulged portion  13  is opened with the three attaching holes  12 , and opened with three female screw holes (not illustrated) disposed on skewed lower sides of the respective attaching holes  12 .  
         [0030]    The apparatus side connector  20  is provided with an apparatus side housing  21  made of a synthetic resin and the three apparatus side terminals  26 . The apparatus side housing  21  is constituted by a connecting portion  22  comprising a single part and formed by substantially an oval shape slender in a left and right direction, and fitting portions  23  (housing elements) constituting a shape of substantially three left and right circular pillars projected from the connecting portions  22  to a front side (left side of FIG. 1). That is, there is constituted a mode in which a plurality of the housing elements are made to be integrally continuous by the connecting portion  22 . The connecting portion  22  is formed with three left and right cylindrical portions  24  projected from a rear end face thereof to a rear side coaxially with the respective fitting portions  23  and formed with a pair of left and right plate-like attaching portions  25  projected from two left and right end portions thereof in side directions.  
         [0031]    As shown by FIG. 2, FIG. 7 to FIG. 9, inside of the apparatus side housing  21  is embedded with the three apparatus side terminals  26  in correspondence with the respective fitting portions  23  and the respective cylindrical portions  24  by insert molding. The apparatus side terminal  26  is constituted by a terminal main body  27  penetrating the fitting portion  23  in the front and rear direction, a tab  28  (fitting projected portion) projected from the terminal main body  27  to the front side and facing a containing portion  23 F in a recess shape at a front end portion of the fitting portion  23  and an apparatus connecting portion  29  projected from the terminal main body  27  to the rear side and facing the cylindrical portion  24  and the apparatus connecting portion  29  is connected with a conductive member of a cable or the like extended from the apparatus main body. Further, an outer periphery of each of the fitting portions  23  is mounted with a seal ring  30 .  
         [0032]    Further, as shown by FIG. 1, such an apparatus side connector  20  is integrated to the shield case  11  in a state in which the respective fitting portions  23  are tightly fitted from an inner side of the shield case  11  to the attaching holes  12  and the connecting portion  22  and the plate-like attaching portions  25  are brought into contact with an inner face of the shield case  11  and integrated to the shield case  11  by bolts (not illustrated) penetrated to bolt holes  25 H of the plate-like attaching portions  25 . In an integrated state shown by being enlarged in FIG. 2, at inside of each of the attaching holes  12 , the containing portion  23 F and the tab  28  at inside thereof are at standby for being connected with the electric wire side connector  50  and the electric wire side terminal  70 . Further, a clearance between the attaching hole  12  and the fitting portion  23  is waterproofed by the seal ring  30 .  
         [0033]    As shown by FIG. 1, the shield electric wire  40  is constituted by surrounding an outer periphery of the conductor  41  by a core  42  comprising an insulating resin material and providing the cylindrical shield layer  43  constituted by knitting metal slender wires in a mesh-like shape to cover the outer periphery of the core  42  and the shield electric wire  40  is brought into a state of exposing the shield layer  43  over an entire length thereof. At the distal end portion of the shield electric wire  40 , there is brought about a state in which an end portion of the core  42  is exposed by shortly cutting an end portion of the shield layer  43  and an end portion of the conductor  41  is exposed by removing the distal end portion of the core  42 . The shield wires  40  are wired in a state of summarizingly bundling three pieces thereof.  
         [0034]    Large portions of the shield electric wires  40  excluding the end portions are inserted into a corrugated tube  45 . Further, the end portions of the shield electric wires  40  are surrounded by a rubber boot  46 . The corrugated tube  45  is made of a synthetic resin, constituting a cylindrical bellows-like shape as a whole are made to be able to be flexibly deformed along wiring paths of the shield electric wires  40  in a state of containing the shield electric wires  40  at inside thereof. The rubber boot  46  is formed by a shape constituting a cylindrical shape as a whole and widening a width thereof toward the front side. A front end portion of the rubber boot  46  constitutes a large diameter outwardly fitting portion  47  outwardly fit to the bulged portion  13  of the shield case  11  and an inner periphery thereof is formed with a lip portion  48  extended in a peripheral direction. Meanwhile, a rear end portion of the rubber boot  46  constitutes a circular small diameter outwardly fitting portion  49  outwardly fitted to an end portion of the corrugated tube  45  and an inner periphery thereof is formed with recessed and projected portions matching a shape of an outer periphery of the corrugated tube  45 .  
         [0035]    As shown by FIG. 2 through FIG. 6, the electric wire side connector  50  is constituted by including an electric wire side housing  51 , a bracket  60 , and the electric wire side terminal  70 . The electric wire side housing  51  is made of a synthetic resin and constitutes substantially a cylindrical shape as a whole. Inside of the electric wire side housing  51  is formed with a cavity  52  in a circular shape penetrated between two front and rear end faces thereof and is formed with a lance  53  for preventing the electric wire side terminal  70  from being drawn out on a lower face side of a front end portion of the cavity  52 . As shown by FIG. 3 and FIG. 6, a rear end portion of the outer periphery of the electric wire side housing  51  is formed with three elastic locking pieces  54  extended to the rear side in a cantilever shape, and three protecting pieces  55  projected to the rear side in a cantilever shape to protect the elastic locking pieces  54  from inner peripheral sides and two sides in peripheral directions in a mode at intervals in the peripheral direction and projected to the rear side further from the rear end face of the electric wire side housing  51 . A seal groove  56  formed at the outer periphery of the electric wire side housing  51  is mounted with a seal ring  57  as a seal member.  
         [0036]    The bracket  60  comprises a conductive material of a metal or the like and constitutes a plate-like shape substantially in an eng-like shape as a whole as shown by FIG. 5 and FIG. 6. The bracket  60  is formed with a center hole  61  constituting a circular shape having a diameter smaller than that of the cavity  52  penetrated in the front and rear direction and formed with a bolt hole  62  to penetrate in the front and rear direction at a position eccentric from the center hole  61 . Further, the bracket  60  is formed with three locking holes  63  along a circle concentric with the center hole  61  to correspond to the elastic locking pieces  54  and the protecting pieces  55 .  
         [0037]    As shown by FIG. 3 and FIG. 4, the bracket  60  is conductively connected to the shield layer  43  of the shield electric wire  40  by interposing an under pipe  64  and a calking ring  65 . That is, a clearance between a front end portion of the shield layer  43  and an outer periphery of the core  42  is inserted with a rear end portion of the conductive under pipe  64  from a front side thereof, the front end portion of the shield layer  43  is outwardly fit with the conductive calking ring  65 , and by calking the calking ring  65  to the inner peripheral side, the front end portion of the shield layer  43  is fixed in a state of being squeezed between the pipe  64  and the calking ring  65 . Further, the under pipe  64  is previously inserted from the front side to the center hole  61  of the bracket  60  and restricted from being drawn to the rear side from the bracket  60  by locking a flange portion  64 F at the front end portion to a front face of the bracket  60  and is restricted in idle movement thereof in a diameter direction relative to the bracket  60  by being fit to the inner periphery of the center hole  61 . Further, by bringing the front end portion and the flange portion  64 F of the under pipe  64  to the inner periphery and the front face of the center hole  61  of the bracket  60 , the shield layer  43  is conductively connected to the bracket  60  via the under pipe  64 . Further, the calking ring  65  and a region forward therefrom and a region rearward therefrom are outwardly fit with a rubber ring  66 . According to the embodiment, the under pipe  64  and the calking ring  65  function as connecting member.  
         [0038]    The electric wire side terminal  70  is slender as a whole in the front and rear direction, a substantially a front half portion thereof is formed with an apparatus connecting portion  71  connected to the tab  28  of the apparatus side terminal  26  and constituting substantially a square cylinder shape, inside of the apparatus connecting portion  71  is provided with an elastic contact piece  72  and a lower face of the apparatus connecting portion  71  is formed with a lance hole  73 . Meanwhile, substantially a rear half portion of the electric wire side terminal  70  is made to constitute an electric wire press contact portion  74  and the electric wire press contact portion  74  is conductively connected with the front end portion of the conductor  41  of the shield electric wire  40  exposed from the core  42 .  
         [0039]    The electric wire side connector  50  is integrated as follows.  
         [0040]    First, the shield electric wire  40  is inserted into the center hole  61  of the bracket  60  and the front end portion of the shield layer  43  is connected to the bracket  60  via the under pipe  64  and the calking ring  65 . Next, a seal member  58  made of rubber is outwardly fitted to the core  42  of the shield electric wire  40  from the front side and the seal member  58  is brought into contact with the flange portion  64 F of the under pipe  64  to press to the front face of the bracket  60 . The seal member  58  is restrained from idly moving relative to the outer periphery of the core  42  by friction. Thereafter, the electric wire press contact portion  74  of the electric wire side terminal  70  is fixedly attached to the front end portion of the conductor  41  of the shield electric wire  40 . The electric wire side terminal  70  is connected to the front end portion of the shield electric wire  40  by the above-described.  
         [0041]    Next, the shield electric wire  40 , the bracket  60  and the electric wire side terminal  70  are integrated to the electric wire side housing  51 . In the integrating operation, the electric wire side terminal  70  is inserted into the cavity  52  from the rear side. The electric wire side terminal  70  deeply inserted to a regular position is stopped in forward movement thereof by bringing the apparatus connecting portion  71  into contact with a front wall of the cavity  52  and is prevented from being drawn out therefrom by locking the lance  53  to the lance hole  73 . Further, the seal member  58  outwardly fitted to the core  42  is brought into close contact with the inner periphery of the rear end portion of the cavity  52 , thereby, an interval between the inner periphery of the cavity  52  and the outer periphery of the core  42  is sealed in a state of restricting invasion of water.  
         [0042]    In accordance with inserting the electric wire side terminal  70  into the cavity  52 , the bracket  60  becomes proximate to the electric wire side housing  51  from the rear side, each of the locking holes  63  of the bracket  60  is penetrated with the elastic locking piece  54  and the protecting piece  55  of the elastic wire side housing  51  from the front side, a locking claw  54 A at the rear end of the elastic locking piece  54  is locked to a hole edge on the outer peripheral side of the locking hole  63  from the rear side and by locking the elastic locking piece  54  and the locking hole  63 , the bracket  60  is restricted from being separated from the electric wire side housing  51  to the rear side. In the locking state, the front face of the bracket  60  is brought into contact with the rear end face of the electric wire side housing  51  from the rear side, thereby, the bracket  60  is restricted from being displaced to the front side relatively from the electric wire side housing  51 . That is, the bracket  60  is locked in a state of being integrated to the electric wire side housing  51 . In the tacked locking state, the seal member  58  is squeezed between the flange portion  64 F and a stopper  52 S of the cavity  52 , the flange portion  64 F is pressed to the bracket  60  by an elastic repulsive force of the seal member  58  and the under pipe  64  and the bracket  60  are firmly brought into contact with each other.  
         [0043]    When the electric wire side connector  50  has finished to integrate, three pieces of the shield electric wires  40  are contained at inside of the corrugated tube  45  in a state of being bundled in a laminated state. The corrugated tube  45  is formed with divided grooves (not illustrated) along a length direction thereof and by expanding the divided grooves, the shield electric wires  40  can be contained at inside thereof. Further, the rubber boot  46  is covered on distal end portions of three pieces of the shield electric wire  40  and at this occasion, the rubber boot  46  may be inserted with the three electric wire side terminals  70  while elastically expanding to open the small diameter outwardly fitting portion  49  at a rear end portion thereof. By outwardly fitting the small diameter outwardly fitting portion  49  of the rubber boot  46  to the front end portion of the corrugated tube  45 , the corrugated tube  45  and the rubber boot  46  are integrated to surround the shield electric wires  40  over a total length thereof.  
         [0044]    The electric wire side housings  51  of the electric wire side connector  50  are respectively fit to the respective attaching holes  12  of the shield case  11 . At inside of the attaching hole  12 , the apparatus side housing  21  is previously prepared, and when the bracket  60  is fit with the electric wire side housing  51  sufficiently deeply to a state of being brought into contact with the outer face of the shield case  11 , the front end portion is fit to the containing portion  23 F of the apparatus side housing  21  and the tab  28  advances into a fitting recess portion  75  in the apparatus connecting portion  71  of the electric wire side terminal  70  to be brought into elastic contact with the elastic contact piece  72  to thereby conductively connect the two terminals  26 ,  70 .  
         [0045]    In a state of fitting the electric wire side housing  51  to the attaching hole  12 , the bolt hole  62  of the bracket  60  is matched to the female screw hole of the shield case  11 , by screwing a bolt  69  penetrated into the bolt hole  62  to the female screw hole to fasten, the bracket  60  is fixed in a state of conductively connected to the outer wall face of the shield case  11  and therefore, the shield layer  43  of the shield electric wire  40  is conductively connected to the shield case  11 . Further, since the bracket  60  is brought into contact with the outer end face of the electric wire side housing  51 , the electric wire side housing  51  is restricted from being drawn out from the attaching hole  12  to the outer side (rear side).  
         [0046]    Further, the large diameter outwardly fitting portion  47  at the front end of the rubber boot  46  is outwardly fitted to the bulged portion  13  of the shield case  11  and the lip portion  48  is brought into elastic contact with the outer periphery. Thereby, the connected portion between the bracket  60  and the shield layer  43  is brought into a state of being waterproofed. Further, an interval between the inner periphery of the attaching hole  12  and the outer periphery of the electric wire side housing  51  is waterproofed by the seal ring  57 .  
         [0047]    As described above, according to the embodiment, although the shield electric wire  40  is not provided with a sheath for protecting the shield layer  43 , the entire length of the shield electric wire  40  (at least a region of the shield electric wire  40  exposing the shield layer  43 ) is contained in the corrugated tube  45  and the rubber boot  46  to protect. In this way, according to the embodiment, the sheath can be dispensed with from the shield electric wire  40  and therefore, it is realized that the small diameter formation and the light-weighted formation of the seal electric wire  40  are carried out by an amount of the sheath and a bending rigidity thereof is reduced.  
         [0048]    Further, the electric wire side terminal  70  is held by the electric wire side housing  51 , the electric wire side housing  51  is fit to the attaching hole  12  of the shield case  11  and therefore, the electric wire side terminal  70  can be positioned relative to the shield case  11  and the apparatus side terminal  26  in the diameter direction and in the front and rear direction, thereby, operability is promoted in connecting the two terminals  26 ,  70 .  
         [0049]    Further, at the rear external portion of the electric wire side housing  51 , the shield layer  43  is connected to the bracket  60 , the bracket  60  is attached to the shield case  11 , the front end portion of the core  42  is inserted into the electric wire side housing  51  and the seal member  58  is provided between the electric wire side housing  51  and the core  42 . That is, the shield processing structure (a structure of connecting the shield layer  43  and the bracket  60 ) at the distal end of the shield electric wire  40 , and a water proof structure between the shield electric wire  40  and the electric wire side housing  51  (a structure of providing the seal member  58  between the core  42  and the electric wire side housing  51 ) are divided to outside and inside of the electric wire side housing  51  and therefore, simplification of the structures is realized.  
         [0050]    Further, the elastic locking piece  54  and the locking hole  63  are provided as tackedly locking member for tackedly locking the bracket  60  and the electric wire side housing  51  and therefore, the bracket  60  and the electric wire side housing  51  can be handled in a state of being integrated to each other and operability in integrating the shield case  11  is improved.  
         [0051]    Further, in a state of integrating the bracket  60  and the electric wire side housing  51  to the shield case  11 , there is constructed a constitution in which the bracket  60  is brought into contact with the electric wire side housing  51  from the rear side in the integrating direction and the bracket  60  serves also as member for preventing the electric wire side housing  51  from being drawn out. Thereby, member for preventing the electric wire side housing  51  from being drawn is dispensed with and simplification of the structure is realized.  
         [0052]    Further, the apparatus side terminal  26  is held by the apparatus side housing  21 , the apparatus side housing  21  is provided at inside of the attaching hole  12 , the apparatus side terminal  26  and the electric wire side terminal  70  are connected by fitting the electric wire side housing  51  to the apparatus side housing  21  at inside of the attaching hole and therefore, connection between the apparatus side terminal  26  and the electric wire side terminal  70  is carried out by only fitting the apparatus side housing  21  and the electric wire side housing  51  to each other. Therefore, it is not necessary to directly connect the terminals  26 ,  70  by troublesome bolt fastening operation, which is excellent in operability. Further, although when the terminals are connected by fastening the bolt, it is necessary to cover a cover for protection at a portion of connecting the terminals after fastening the bolt, according to the embodiment, the two terminals  26 ,  70  are brought into a state of being contained at inside of the attaching hole  12  and therefore, it is not necessary to cover the cover for protection.  
         [0053]    The invention is not limited to the embodiment explained by the above-described description and drawings but, for example, following embodiments are also included in the technical range of the invention, further, the invention can be embodied by being variously changed within the range not deviated from the gist other than described below.  
         [0054]    (1) Although according to the above-described embodiment, the plurality of electric wire side housings are provided respectively independently from each other, the electric wire side housing may be constituted as an integrally continuous housing similar to the apparatus side housing.  
         [0055]    (2) Although according to the above-described embodiment, the apparatus side housing is constituted in the mode in which a plurality of housing elements are integrally continuous, similar to the electric wire side housing of the first embodiment, there may be constituted a constitution in which respectively independent housings are inserted into the respective attaching holes.  
         [0056]    (3) Although according to the above-described embodiment, the apparatus side terminal is integrated to the apparatus side housing by insert molding, there may be constituted a state of inserting the apparatus side terminal to the apparatus side housing to contain.  
         [0057]    (4) Although according to the above-described embodiment, there is constituted the state of inserting the electric wire side terminal to the electric wire side housing to contain, according to the embodiment, the electric wire side terminal and the electric wire side housing may be integrated by insert molding.  
         [0058]    (5) Although according to the above-described embodiment, there is provided the member for tackedly locking the bracket and the electric wire side housing, according to the invention, there may be constructed a constitution of not providing the tackedly locking member.  
         [0059]    (6) Although according to the embodiment, there is constructed the constitution in which the bracket serves also as the function of preventing the electric wire side housing from being drawn, according to the invention, the electric wire side housing may be prevented from being drawn by member other than the bracket.  
         [0060]    (7) Although according to the embodiment, there is exemplified a sheathless structure in which the sheath for protecting the shield layer of the shield electric wire is not provided, the sheath may be provided at a surrounding of the shield layer of each of the shield electric wires. For example, the sheath may be arranged to summarizingly cover three pieces of the shield electric wires shown in FIG. 1.