Patent Publication Number: US-10320116-B2

Title: Terminal unit

Description:
BACKGROUND 
     Field of the Invention 
     The invention relates to a terminal unit. 
     Related Art 
     Japanese Unexamined Patent Publication No. 2004-055470 discloses a connector used in an in-vehicle LAN (Local Area Network). A wiring harness for the in-vehicle LAN has power supply wires for supplying power to devices, such as a car navigation system, and communication wires constituting a twisted pair cable to provide a measure against noise. 
     Terminal fittings are fixed to front end parts of two communication wires of the twisted pair cable and are inserted individually into terminal accommodating chambers in a housing. The terminal fittings are inserted from behind and in a direction substantially parallel to a length direction of the communication wires. Thus, the front end parts of the two communication wires must be untwisted to ensure an extra length for the individual insertion. However, an anti-noise function is lost by untwisted regions of the communication wires. 
     The communication wires could remain twisted by providing a terminal accommodating member that has a halved structure and that is formed separate from the housing. The terminal fittings that are connected to the communication wires are mounted into the halved members in a direction intersecting the length direction of the communication wires. Thus, the communication wires need not be untwisted and the anti-noise function is not reduced. 
     However, the halved members may rattle in a uniting direction due to dimensional tolerances. A large amount of rattling of the halved members may permit the terminal fittings to rattle. Therefore a countermeasure is desired. 
     The invention was completed based on the above situation and aims to suppress rattling in a united state of a terminal accommodating member. 
     SUMMARY 
     One aspect of the invention relates to a terminal unit that has at least one terminal fitting fixed to at least one wire. The terminal unit includes a terminal accommodating member that is configured by uniting first and second members in a direction intersecting an axial direction of the wire. The terminal accommodating member is configured to at least partly accommodate the terminal fitting. At least one first guide is formed on the first member and extends in a substantially front-rear direction. At least one second guide is formed on the second member and can slide in contact with the first guide. The first and second guides are configured to allow the first and second members to be displaced in the front-rear direction while keeping the first and second members in a united state. At least one guiding portion is formed in the first guide and is configured to bring the first and second members closer to each other in a uniting direction in the process of displacing the second member from a temporary assembled position to a proper assembled position in the front-rear direction. 
     The first and second guides may lock together to prevent separation of the first and second members in a direction opposite to the uniting direction. According to this configuration, the shapes of the first and second members are simplified as compared to the case where guides are separate from the structures for holding the first and second members together. 
     The first guide may have at least one rattling allowing portion, the guiding portion and at least one rattling preventing portion disposed substantially side by side one after another on an outer side surface of the first member. 
     At least one resiliently deformable side plate may be cantilevered from the second guide substantially in the uniting direction with the first member. 
     The second guide may be a projection formed on an extending end part of the side plate. 
     The second guide may face the rattling allowing portion with a clearance defined therebetween when the second member is at the temporary assembled position and may be in contact with the rattling preventing portion when the second member is at the proper assembled position. 
     According to this configuration, if the second member is united toward the proper assembled position, the resiliently deformed side plate becomes oblique to the uniting direction. Thus, the second guide cannot be locked to the rattling preventing portion and is left resiliently deformed. In contrast, if the second member is united toward the temporary assembled position, the side plate resiliently returns and the second guide faces the rattling allowing portion even if the resiliently deformed side plate becomes oblique since the clearance is secured between the rattling allowing portion and the second guide. 
     A tubular terminal body may be formed at a front end part of the terminal fitting and may be connectable to a mating terminal, and the guiding portion may be disposed at a position substantially corresponding to the terminal body in the front-rear direction. According to this configuration, rattling of the terminal body, serving as a connection means to the mating terminal, can be suppressed. Thus, the terminal fitting and the mating terminal can be prevented from interfering with each other without being smoothly connected. 
     The guiding portion may be at a front end part of the first member. At least one lock projection may formed on an outer side surface of a rear end part of the first member. The second member may be formed with at least one resilient deformable locking portion cantilevered in the uniting direction with the first member. At least one locking projection may be formed on an extending end part of the resilient locking portion and may be configured to hold the first and second members in the united state by being locked to the lock projection in a state where the second member is at the proper assembled position. 
     A correcting slope may be formed in a region of an outer side surface of the lock projection on the side of the temporary assembled position. The correcting slope may be configured to reduce the amount of resilient deformation of the resilient locking portion more as the second member approaches the first member when the locking projection interferes with the correcting slope in the process of displacing the second member toward the proper assembled position. 
     The second member may be displaced in an oblique posture toward the proper assembled position with respect to the first member. In this situation, the locking projection interferes with the correcting slope, and the posture of the second member is corrected by a resilient restoring force of the resilient locking portion. The correcting slope is formed on the outer side surface of the lock projection. Thus, a locking margin between the locking projection and the lock projection can be ensured. 
     The first member may be formed with at least one stopper substantially extending along the uniting direction of the second member, and the second member may be formed with at least one abutting portion extending substantially along the uniting direction with the first member and configured to contact the stopper in a state where the second member is at the proper assembled position. According to this configuration, the second member cannot incline with respect to the first member. 
     If the second member is displaced to the proper assembled position by the first and second guides in a state where the second member is united with the first member at the temporary assembled position, both members are brought closer to each other in the uniting direction by the guiding portion. In this way, the rattling of the first and second members in the uniting direction is suppressed. 
     These and other features and advantages of the invention will become more apparent upon reading the following detailed description and accompanying drawings. It should be understood that even though embodiments are described separately, single features may be combined to additional embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing a state where a cover member is mounted at a proper assembled position in a terminal unit of one embodiment. 
         FIG. 2  is a side view showing the state where the cover member is mounted at the proper assembled position. 
         FIG. 3  is a perspective view showing a state where the cover member is mounted at a temporary assembled position. 
         FIG. 4  is a side view showing the state where the cover member is mounted at the temporary assembled position. 
         FIG. 5  is a perspective view of a holding member. 
         FIG. 6  is a side view of the holding member, 
         FIG. 7  is a plan view of a state where inner conductors are accommodated in the holding member. 
         FIG. 8  is a perspective view of the cover member. 
         FIG. 9  is a front view of the cover member. 
         FIG. 10  is a back view of the cover member. 
         FIG. 11  is a section along X-X of  FIG. 9 . 
     
    
    
     DETAILED DESCRIPTION 
     One specific embodiment of the invention is described with reference to  FIGS. 1 to 11 . In the following description, a left side in  FIGS. 1 to 8 and 11  is defined as a front side concerning a front-rear direction. Upper and lower sides shown in  FIGS. 1 to 6 and 8 to 11  are defined as upper and lower sides concerning a vertical direction. 
     A terminal unit A of this embodiment includes a dielectric  10  (terminal accommodating member as claimed) made of synthetic resin and two inner conductors  35  (terminal fitting as claimed), and constitutes a shield terminal (not shown) having a shielding function. The dielectric  10  is configured by assembling a halved holding member  1  (first halved member as claimed) and a halved cover member  27  (second halved member as claimed). 
     The holding member  11  is long and narrow in the front-rear direction and includes a bottom wall  12 , two side walls  13  projecting up from left and right sides of the bottom wall  12 , and a front wall  16  connected to the front ends of the bottom wall  12  and the side walls  13 . A partition wall  14  projects up in a lateral intermediate position of the bottom wall  12 , and left and right accommodating chambers  15  are defined in the holding member  11  by the partition wall  14  and the side walls  13 . The accommodating chambers  15  are open in the upper and rear surfaces of the holding member  11 . The inner conductors  35  are accommodated respectively in the accommodating chambers  15 , and a retaining projection for restricting a rearward displacement of the inner conductor  35  is formed on the bottom surface of each accommodating chamber  15 . 
     Two bilaterally symmetrical guide recesses  17  (first guides as claimed) are formed in front end side regions of outer side surfaces of the left and right side walls  13 . Each guide recess  17  is formed by recessing a lower end of the outer side surface of the side wall  13  with a step formed between the lower and upper ends, and is long and narrow in the front-rear direction. A rattling preventing portion  18  is disposed at a front end part of each guide recess  17 . A guiding portion  19  extends rearward from the rear end of the rattling preventing portion  18  and a rattling allowing portion  20  extends from the rear end of the guiding portion  19  to the rear end of the guide recess  17 . The rattling preventing portion  18 , the guiding portion  19  and the rattling allowing portion  20  faces down (same direction as a uniting direction of the holding member  11  with the cover  27 ). 
     The rattling preventing portion  18  and the rattling allowing portion  20  extend straight in the front-rear direction (perpendicular to the uniting direction of the holding member  11  and the cover  27 ). A length of the rattling preventing portion  18  in the front-rear direction is shorter than that of the rattling allowing portion  20  in the front-rear direction. The rattling preventing portion  18  is lower (before in the uniting direction of the cover  27  with the holding member  11 ) than the rattling allowing portion  20 . In a side view, the guiding portion  19  is inclined to be lower toward the front due to a height difference between the rattling preventing portion  18  and the rattling allowing portion  20 . 
     Two lock projections  21  are formed on rear end parts of the outer side surfaces of the left and right side walls  13 . A rear end region of an outer side surface of the lock projection  21  serves as a correcting slope  22 . The correcting slope  22  is inclined to project more from the side wall  13  toward the front in a plan view. The lower surface of the lock projection  21  serves as a locking surface  23  in the front-rear direction (direction perpendicular to the uniting direction of the cover  27  with the holding member  11 ). 
     Left and right through holes  24  penetrate the front wall  16  from the front end surface of the holding member  11  to the respective accommodating chambers  15 . Mating terminals  41  in the form of long, narrow tabs are inserted into the through holes  24 . Rearwardly facing front stops  25  are formed on left and right side edges of the front wall  16  and extend vertically parallel to the uniting direction of the cover  27  with the holding member  11 . Rearward movement restricting portions  26  face forward at the rear ends of the guide recesses  17  on the left and right side walls  13  and extend vertically. 
     The cover  27  is long and narrow in the front-rear direction and includes an upper plate  28 , bilaterally symmetrical side plates  29  and bilaterally symmetrical resilient locking portions  30 . The side plates  29  extend down substantially at a right angle from front end side regions of both left and right side edges of the upper plate  28 . The front edges of the left and right side plates  29  serve as front abutting portions  31  and extend vertically. The rear edges of the left and right side plates  29  serve as rear abutting portions  32  and extend vertically. 
     The side plates  29  can be deformed resiliently to be wider apart in a lateral direction with the upper ends (boundary parts with the upper plate  28 ) as supports. Guide ribs  33  (second guide portion as claimed) project over the entire areas of the lower end edges of the inner surfaces of the side plates  29  in the front-rear direction. A vertical dimension from the lower surface of the upper plate  28  to the upper surface of the guide rib  33  is equal to or slightly larger than a vertical distance from the upper end surface of the side wall  13  of the holding member  11  to the rattling preventing portion  18 . 
     The resilient locking portions  30  are in the form of plates extending down substantially at a right angle from rear end parts of both left and right side edges of the upper plate  28 . The resilient locking portions  30  can be deformed resiliently to be wider apart in the lateral direction with the upper ends (boundary parts with the upper plate  28 ) thereof as supports. Locking projections  34  project in from rear ends of the lower end edges of the inner surfaces of the resilient locking portions  30 . A vertical dimension from the lower surface of the upper plate  28  to the upper surface of the locking projection  34  is equal to or slightly larger than a vertical distance from the upper end surface of the side wall  13  of the holding member  11  to the locking surface  23  of the lock projection  21 . 
     The inner conductor  35  is long and narrow in the front-rear direction. A front end of the inner conductor  35  defines a conductor body  36  (terminal body as claimed) into which the mating terminal  41  is inserted and conductively connected. A retaining portion (not shown) is formed on the lower surface of the conductor body  36  and is lockable to the retaining projection (not shown) of the holding member  11 . The retaining portion is locked to the retaining projection to restrict rearward separation of the inner conductor  35  accommodated in the accommodating chamber  15  from the holding member  11 . 
     A rear region of the inner conductor  35  defines a crimping portion  37  in the form of an open barrel extending rearward from the rear end of the conductor body  36 . A front end part of a wire  38  is fixed conductively to the crimping portion  37 . Two wires  38  fixed to the two inner conductors  35  constitute a twisted pair cable  40 . The twisted pair cable  40  exhibits a shielding function of suppressing electromagnetic noise by spirally twisting the two wires  38 . Although the two wires  38  are covered with an outer cover  39 , the outer cover  39  is removed at a front end part of the twisted pair cable  40  and the two wires  38  are exposed in an untwisted state. 
     The two inner conductors  35  individually fixed to the front end parts of the wires  38  are accommodated into the accommodating chambers  15  from above the holding member  11 . In the case of individually inserting the inner conductors  35  one by one from behind the holding member  11 , it is necessary to ensure an extra length (exposed length) of the wire  38  from the outer cover  39  to the inner conductor  35  and untwist the wire  38  in that extra length region, but the shielding function cannot be exhibited in the untwisted region. In that respect, since the inner conductor  35  is dropped into or arranged in the accommodating chamber  15  to be accommodated in a direction perpendicular to a length direction of the wire  38  from above the holding member  11  in the terminal unit A of this embodiment, a length of an untwisted region of the wire  38  can be suppressed to a minimum necessary length. 
     Next, how to assemble the terminal unit A is described. First, the two inner conductors  35  fixed to the wires  38  are accommodated into the accommodating chambers  15  of the holding member  11 . Subsequently, the cover  27  is mounted and united with the holding member  11  from above. The uniting direction of the holding member  11  and the cover member  27  is the vertical direction (direction perpendicular to the length direction of the wires  38 ). In the united or assembled state, the side plates  29  cover the front end side regions of the outer side surfaces of the side walls  13  where the guide recesses  17  are formed and the resilient locking portions  30  cover the rear end regions of the outer side surfaces of the side walls  13  where the lock projections  21  are formed. 
     In uniting, the cover  27  is assembled at a temporary assembled position TAP (see  FIGS. 3 and 4 ) as a first position. The temporary assembled position TAP is a position where the rear abutting portions  32  of the cover  27  are in contact with the rearward movement restricting portions  26  of the holding member  11  or proximately facing the rearward movement restricting portions  26  in the front-rear direction. In a state where the cover  27  is at the temporary assembled position TAP, the front abutting portions  31  are located behind the front stops  25 . Further, the front ends of the locking projections  34  are located behind the rear ends of the lock projections  21 . 
     Further, in the state where the cover  27  is at the temporary assembled position TAP, the front ends of the guide ribs  33  are behind the rear ends of the guiding portions  19 . That is, the upper surfaces of the guide ribs  33  face the rattling allowing portions  20  over the entire lengths thereof with clearances  42  (see  FIG. 4 ) defined therebetween in the vertical direction. The guide ribs  33  interfere with regions of the outer side surfaces of the side walls  13  above the guide recesses  17  in the process of uniting the cover  27  with the holding member  11 . Thus, the side plates  29  are deformed resiliently to be wider apart in the lateral direction. When the side plates  29  are deformed resiliently, the positions of the guide ribs  33  become slightly higher. However, since the clearances  42  are secured between the guide ribs  33  and the rattling allowing portions  20  in a state where the side plates  29  are not deformed resiliently, the side plates  29  resiliently return and the guide ribs  33  can slip under the rattling allowing portions  20  when the upper plate  28  contacts the upper ends of the side walls  13  and the cover  27  and the holding member  11  are united completely. 
     After the cover member  27  is assembled at the temporary assembled position TAP, the cover  27  is slid forward with respect to the holding member  11 . In the process of moving the cover  27 , front end parts of the guide ribs  33  slip under the guiding portions  19 . At this time, if the cover  27  is lifted (displaced in a direction intersecting a moving direction of the cover  27 ) with respect to the holding member  11 , the front ends of the guide ribs  33  slide in contact with the guiding portions  19 . Thus, a front end part of the cover  27  is displaced down with respect to the holding member  11 . When the cover  27  reaches a proper assembled position PAP (see  FIGS. 1 and 2 ), the front abutting portions  31  contact the front stops  25  and the locking projections  34  are locked to the locking surfaces  23  of the lock projections  21 . In the above way, the assembling of the cover  27  and the holding member  11  is completed. 
     With the assembling of the cover  27  and the holding member  11  completed, the clearances  42  between the front ends of the guide ribs  33  and the rattling preventing portions  18  are very small. Thus, the cover  27  and the holding member  11  do not rattle in the vertical direction, and vertical rattling of the inner conductors  35  in the accommodating chambers  15  is suppressed. Therefore, in connecting the mating terminal  41  and the inner conductor  35 , a connecting operation is performed easily without causing any displacement between the mating terminal  41  and the inner conductor  35 . 
     Further, in a state where the cover  27  is at the proper assembled position PAP and the side plates  29  are not deformed resiliently, there are hardly any clearances between the front ends of the guide ribs  33  and the rattling preventing portions  18 . Thus, if an attempt is made to unite the cover  27  at the proper assembled position PAP, the side plates  29  are deformed resiliently and the guide ribs  33  are in contact with positions above the rattling preventing portions  18  and cannot slip under the rattling preventing portions  18  when the upper plate  28  contacts the upper ends of the side walls  13 . Therefore, the side plates  29  cannot resiliently return and are left resiliently deformed. In this way, it can be discriminated that the united position of the cover  27  is not proper. 
     Further, if a rear end side of the cover  27  is lifted in the process of sliding the cover  27  from the temporary assembled position TAP to the proper assembled position PAP, the posture of the cover  27  can be corrected by the correcting slopes  22 . If the cover  27  is displaced toward the proper assembled position PAP in such an inclined posture that the rear part thereof is lifted, the front ends of the locking projections  34  move onto the correcting slopes  22  without the locking projections  34  slipping under the lock projections  21  and the resilient locking portions  30  are deformed resiliently to be wider apart in the lateral direction. 
     Since the contact positions of the correcting slopes  22  with the front ends of the locking projections  34  are displaced more forward as the cover  27  is displaced more forward and the rear end side of the cover  27  is lifted more, the amount of resilient deformation of the resilient locking portions  30  increases. Along with this, resilient restoring forces of the resilient locking portions  30  also increase. Thus, the posture of the cover  27  is corrected in a direction to lower the rear end side by these resilient restoring forces of the resilient locking portions  30 . Thus, the posture of the cover  27  is corrected and the locking projections  34  slip under the lock projections  21  and are locked to the locking surfaces  23  before the cover  27  reaches the proper assembled position PAP. 
     The terminal unit A of this embodiment has the inner conductors  35  fixed to the front parts of the wires  38  and the dielectric  10  for accommodating the inner conductors  35 . The dielectric  10  is configured by uniting the holding member  11  and the cover  27  in the direction intersecting an axial direction of the wires  38 . The holding member  11  is formed with the guide recesses  17  extending in the front-rear direction. The cover  27  is formed with the guide ribs  33  capable of sliding in contact with the guide recesses  17  and configured to allow relative displacement of the holding member  11  and the cover  27  in the front-rear direction while keeping the holding member  11  and the cover  27  united. The guide recesses  17  are formed with the guiding portions  19  for bringing the holding member  11  and the cover  27  closer to each other in the uniting direction in the process of displacing the cover  27  from the temporary assembled position TAP to the proper assembled position PAP in the front-rear direction. 
     The guide recesses  17  and the guide ribs  33  guide the cover  27  to the proper assembled position PAP and into a state where the cover  27  is united with the holding member  11  at the temporary assembled position TAP. Simultaneously, the guiding portions  19  bring the holding member  11  and the cover  27  closer to each other in the uniting direction to suppress rattling of the holding member  11  and the cover  27  in the uniting direction. 
     Further, the guide recesses  17  and the guide ribs  33  lock to each other to restrict the separation of the holding member  11  and the cover  27  in a direction opposite to the uniting direction. Thus, the shapes of the holding member  11  and the cover  27  can be simplified as compared to the case where a means for holding the holding member  11  and the cover  27  together is provided separately from the guide recesses  17  and the guide ribs  33 . 
     Further, the guide recess  17  is formed such that the rattling allowing portion  20 , the guiding portion  19  and the rattling preventing portion  18  are disposed side by side one after another on the outer side surface of the holding member  11 . The cover  27  is formed with the resiliently deformable side plates  29  cantilevered in the same direction as the uniting direction with the holding member  11 , and the guide ribs  33  project on extending end parts of the side plates  29 . The guide ribs  33  and the rattling allowing portions  20  face each other with the clearances  42  defined therebetween when the cover  27  is at the temporary assembled position TAP. The guide ribs  33  proximately face or are in contact with the rattling preventing portions  18  when the cover  27  is at the proper assembled position PAP. 
     According to this configuration, if the cover  27  is united toward the proper assembled position PAP, the resiliently deformed side plates  29  become oblique to the uniting direction. Thus, the guide ribs  33  cannot be locked to the rattling preventing portions  18  and are left resiliently deformed. In contrast, if the cover  27  is united toward the temporary assembled position TAP, the side plates  29  are resiliently deformed and the guide ribs  33  face the rattling allowing portions  20  even if the resiliently deformed side plates  29  are oblique since the clearances  42  are secured between the rattling allowing portions  20  and the guide ribs  33 . 
     Further, the rectangular tubular conductor bodies  36  are formed at the front parts of the inner conductors  35  and are connectable to the mating terminals  41 . Additionally, the guiding portions  19  are at positions corresponding to the conductor bodies  46  in the front-rear direction. According to this configuration, the rattling of the conductor bodies  36  at the connection to the mating terminals  41  can be suppressed. Therefore, the inner conductors  35  and the mating terminals  41  will not interfere with each other and can be connected smoothly. 
     Further, the guiding portions  19  are disposed at the front end part of the holding member  11 , the lock projections  21  are formed on the outer side surfaces of the rear end part of the holding member  11  and the cover  27  is formed with the resiliently deformable locking portions  30  cantilevered in the uniting direction with the holding member  11 . The locking projections  34  are formed on the extending end parts of the resilient locking portions  30  and hold the holding member  11  together with the cover  27  by being locked to the locking surfaces  23  of the lock projections  21  when the cover  27  is at the proper assembled position PAP. 
     The correcting slopes  22  are formed in regions of the outer side surfaces of the lock projections  21  on the side of the temporary assembled position TAP in the front-rear direction. The correcting slopes  22  reduce the amount of resilient deformation of the resilient locking portions  30  as the cover  27  approaches the holding member  11  when the locking projections  34  interfere with the correcting slopes  22  in the process of displacing the cover  27  toward the proper assembled position. According to this configuration, the locking projections  34  interfere with the correcting slopes  22  in the process of displacing the cover  27  in an oblique posture toward the proper assembled position PAP. Thus, the posture of the cover  27  is corrected by resilient restoring forces of the resilient locking portions  30 . The correcting slopes are formed on the outer side surfaces of the lock projections  21 . Thus, locking margins between the locking projections  34  and the lock projections  21  can be ensured. 
     The holding member  11  has the front stops  25  extending along the uniting direction of the cover  27 , and the cover  27  has the front abutting portions  31  extending along the uniting direction with the holding member  11  and are configured to contact the front stops  25  in the state where the cover  27  is at the proper assembled position PAP. According to this configuration, the inclination of the cover  27  with respect to the holding member  11  is prevented. 
     The invention is not limited to the above described embodiment, and the following embodiments also are included in the scope of the invention. 
     Although the cover is displaced forward from the temporary assembled position toward the proper assembled position in the above embodiment, the cover may be relatively displaced forward from the temporary assembled position toward the proper assembled position. 
     Although the first guide and the second guide also function to hold the cover and the holding member together in the above embodiment, the guides and means for holding the cover and the holding member together may be provided separately. 
     Although the guiding portions are only at the positions corresponding to the terminal bodies in the above embodiment, the guiding portions may be provided in regions of the terminal fittings behind the terminal bodies. 
     Although the first guide is a step in the above embodiment, the first guide may be a groove. 
     Although the terminal unit constituting a shield terminal by the terminal fittings functioning as the inner conductors and the terminal accommodating member functioning as the dielectric is described in the above embodiment, the invention can be applied also to terminal units not constituting shield terminals. 
     REFERENCE SIGNS 
     
         
         A . . . A terminal unit 
           10  . . . dielectric (terminal accommodating member) 
           11  . . . holding member (first member) 
           17  . . . guide recess (first guide) 
           18  . . . rattling preventing portion 
           19  . . . guiding portion 
           20  . . . rattling allowing portion 
           21  . . . lock projection 
           22  . . . correcting slope 
           25  . . . front stop portion (stopper) 
           27  . . . cover (second member) 
           29  . . . side plate 
           30  . . . resilient locking portion 
           31  . . . front abutting portion (abutting portion) 
           33  . . . guide rib (second guide) 
           34  . . . locking projection 
           35  . . . inner conductor (terminal fitting) 
           36  . . . conductor body (terminal body) 
           38  . . . wire 
           41  . . . mating terminal 
           42  . . . clearance