JP2013054930A - Joint connector for shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint connector for shield capable of collectively connecting a plurality of drain lines for shield to a predetermined earth part with no significant complication in structure nor rising of cost.SOLUTION: The joint connector for shield includes a plurality of first terminals 11 which are attached to each drain line W1 and contain a first contact part 11a extending in a specific direction, a second terminal 12 which is attached to a terminal of an earth line W2 and contains a second contact part 12a extending in a specific direction, a shorting conductor 20 for causing a short circuit between the terminals 11 and 12, a housing which contains a conductor housing part 32 capable of housing the shorting conductor 20, and a seal material 50 which closes an opening of the conductor housing part 32 and contains a plurality of seal inserting holes 52 into which contact parts 11a and 12a are inserted respectively. The shorting conductor 20 includes a plurality of terminal contact parts 22 contacting respectively to the contact parts 11a and 12a inserted in the conductor housing part 32, and by contacting of them, the terminals 11 and 12 are shorted each other.

Description

  The present invention relates to a shield joint connector for collectively connecting a plurality of shield drain wires each connected to a shield member to ground.

  Generally, a wire harness mounted on a vehicle or the like includes a plurality of wiring materials (electric wires or cables) bundled together and electronic components and connectors connected to these wiring materials, and a predetermined circuit is constructed by these. Is done. Among the wiring materials, a wiring material having a shielding function such as a shielded electric wire or a shielded cable is used particularly for those connected to in-vehicle electrical components that are required to shield noise. For example, a shielded cable includes a signal line that is an electric wire for transmitting a signal, a shield layer made of metal tape or the like so as to surround the signal line, and a drain line connected to the shield layer. The drain line is connected to the ground, so that the shield layer is given a noise shielding function.

  In such a wire harness, it is preferable for simplifying the structure and improving work efficiency that a plurality of drain wires included in the wire harness are collectively connected to a common ground portion (for example, a vehicle body). . As a wire harness having a structure for this purpose, Patent Document 1 discloses a wire harness as shown in FIG.

  This wire harness includes a plurality of shielded electric wires 80, a plurality of connectors 86, an electronic device 88, and a shield joint connector 90 that are bundled together. Each shielded electric wire 80 includes a plurality of signal lines 81, an insulating coating 82 covering these signal lines 81, a shield layer (not shown) provided inside the insulating coating 82, and a drain line 83 connected to the shield layer. The signal wire 81 is exposed at both ends of the shielded electric wire 80. Each connector 86 is provided at one terminal of the signal line 81 in each shielded electric wire 80, and the other terminal of each signal line 82 is connected to the electronic device 88. Each drain line 83 has a drain body line 84 directly connected to each shield layer, and a lead line 85 connected to the drain body line 84 and extending the drain line 83.

  The shield joint connector 90 is used to connect the drain wires 83 to a common ground site, and includes a plurality of terminals 91 provided at the terminals of the lead wires 85 and the terminals 91 respectively. The bus bar 92 has a shape that can be combined, a housing 94 that holds the bus bar 92, and a ground wire 96 connected to the bus bar 92. The terminal of the ground wire 96 is provided with a ground terminal 98. By connecting the ground terminal 98 to a specific part of the vehicle body, each drain wire 83 is connected to each terminal 91, the bus bar 92, and the ground. The shield structure in each shielded electric wire 80 is constructed by being connected to the ground through the line 96.

JP 2006-310105 A

  The shield joint connector as described above may be required to be waterproofed to ensure connection reliability depending on the installation location. However, if a waterproof structure that a conventional waterproof connector has for the waterproofing is applied to the shield joint connector, the structure of the joint connector becomes complicated and the cost increases, which is not preferable.

  In view of such circumstances, the present invention provides a shield joint connector capable of collectively connecting a plurality of shield drain lines to a predetermined ground site without significantly complicating the structure and increasing the cost. The purpose is to provide.

  In order to solve the above-mentioned problems, the present inventors have paid attention to a portion to be waterproofed in each drain line. That is, each drain line is different from a signal line for transmitting a complicated signal, and may simply have a function of connecting each shield member to the ground, so that the drain line itself and the terminal of the drain line It is not necessary to waterproof the connection part with the terminal, and if the connection part between these drain wires and the ground wire, that is, the electric wire connected to the ground part, is waterproof, its high reliability can be secured. Is possible.

  From this point of view, the present invention makes it possible to ensure both connection reliability, remarkable structural complexity, and avoidance of cost increase. Specifically, the shield joint connector provided by the present invention is for collectively connecting a plurality of drain wires each connected to a shield member to a predetermined ground site, A plurality of first terminals each having a first contact portion attached to the terminal and extending in a specific direction, and a second terminal having a second contact portion attached to the terminal of the ground wire connected to the ground portion and extending in the specific direction. A terminal, a short-circuit conductor for short-circuiting each of the first terminals and the second terminal, a housing including a conductor housing portion that opens in a specific direction and can accommodate the short-circuit conductor, and an elastic material. And a sealing material attached to the housing so as to close the opening of the conductor accommodating portion. The seal material has a plurality of seal insertion holes through which the first contact portions and the second contact portions can be inserted from the outside to the inside of the conductor housing portion, and the seal insertion holes It has a shape that keeps the inside of the conductor accommodating portion in a sealed state by being in close contact with the first contact portion or the second contact portion to be inserted, and the short-circuiting conductor is accommodated in the conductor through each of the sealing insertion holes. A plurality of terminal contact portions that come into contact with the first and second contact portions, respectively, inserted into the portion, and the contact between the terminal contact portions and the first and second contact portions causes the first terminal and the The second terminals are short-circuited with each other.

  According to this shield joint connector, the first contact portion of each of the first terminals and the second contact portion of the second terminal are inserted into the conductor accommodating portion of the housing through the seal insertion holes of the seal material, and Each drain wire comes into contact with each terminal contact portion of the short-circuiting conductor in the conductor accommodating portion and is short-circuited with each other, so that each drain wire is in contact with the first terminal attached to the drain wire, the first terminal. A short-circuit conductor, the second terminal in contact with the short-circuit conductor, and the ground wire to which the second terminal is attached are collectively connected to a common ground site.

  Furthermore, by sealing the contact part of each of the first contact part and the second contact part and the terminal contact part in a conductor housing part of a common housing, all the contact parts are efficiently waterproofed collectively, The high connection reliability is maintained. In addition, this waterproofing is realized with a simple structure in which the opening of the conductor accommodating portion in the housing is simply closed with the sealing material, so that unlike the case of applying a heavy waterproof structure as included in a conventional waterproof connector. , Without significant structural complexity and cost increase. That is, the shield joint connector according to the present invention has a simple structure in which the inside of the conductor accommodating portion is hermetically sealed by the combination of the housing and the sealing material attached to the housing, and the first terminal and the second terminal are short-circuited. Waterproofing of the contributing connection part is achieved efficiently.

  As a specific shape of the short-circuiting conductor, there are a plurality of holding insertion holes through which the first contact portion and the second contact portion inserted into the conductor housing portion can be inserted, respectively. A terminal holding wall that holds one contact portion and the second contact portion, and each terminal contact portion is elastic to the first contact portion or the second contact portion that is inserted into the holding insertion hole of the terminal holding wall. What has the shape which contacts while deform | transforming is suitable. In this short-circuit conductor, the elastic return force of each elastic contact portion secures the contact pressure between the elastic contact portion and the first and second contact portions, and the first and second contact portions are inserted. Since the terminal holding wall having the holding insertion hole holds the first and second contact portions, the contact stability between the first and second contact portions and the terminal contact portion is enhanced.

  In this case, the short-circuiting conductor is used as the terminal holding wall, and is held on the near side where the elastic contact portion is positioned closer to the seal material than the contact portion where the elastic contact portion contacts the first contact portion or the second contact portion. It is more preferable to have both a wall and a back-side holding wall located on the opposite side of the sealing material with the contact portion in between. The short-circuiting conductor holds the first and second contact portions by holding the first and second contact portions at the front side holding wall and the back side holding wall located at both the front and rear sides of the respective contact parts. The contact state between the two contact portions and the elastic contact portion can be further stabilized.

  In this case, the back side holding wall can also constitute a part of the terminal contact portion, whereby the structure of the short-circuiting conductor is further simplified.

  In addition, the conductor housing portion of the housing has a back wall that is located on the back side of the sealing material and faces the sealing material, and the first and the first inserted into the conductor housing portion on the back wall. It is further preferable that a plurality of recesses for receiving the tip portions of the two contact portions are provided. The acceptance of the tip portions of the first and second contact portions by these recesses makes it possible to hold the first and second contact portions also by the housing, whereby the first and second contact portions and Contact with the shorting conductor can be further stabilized.

  On the other hand, each of the first terminal and the second terminal has a first main body portion and a second main body portion including a portion to be crimped to the terminal of each drain wire and the terminal of the ground wire, respectively. It is preferable that the first contact portion and the second contact portion extend from the first main body portion and the second main body portion along the axial direction of the drain wire and the ground wire, respectively. In this case, the housing has a terminal accommodating portion that is located on the opposite side of the conductor accommodating portion with the sealing material interposed therebetween and accommodates the first and second main body portions of the first terminal and the second terminal. The terminal accommodating portion includes a plurality of terminal locking portions that lock the first main body portion and the second main body portion to prevent the main body portion from moving in the detaching direction, thereby allowing each first contact. The contact between the contact portion and the second contact portion and the terminal contact portion of the short-circuiting conductor is more reliably maintained.

  In the present invention, it is more preferable that all the first terminals and the second terminals have the same shape. Unification of the shape of these terminals eliminates restrictions on the arrangement of the terminals, and therefore facilitates the operation of inserting the terminals into the housing. That is, since each terminal can be finally short-circuited regardless of which seal insertion hole in the seal material is inserted, the operator can connect each terminal to the housing without paying attention to the arrangement of the terminals. The terminal can be inserted.

  The shield joint connector according to the present invention may include not only the first terminal and the second terminal but also a third terminal attached to another terminal, for example, a grounding wire different from the drain wire and the ground wire. Good. Since the third terminal also has the same shape as the first terminal and the second terminal, it can be collectively connected to the ground through the shorting conductor. Specifically, it further includes a third terminal having a third contact portion extending in a specific direction and attached to a grounding wire different from the drain wire and the ground wire, and the sealing material includes the first contact In addition to the seal insertion holes corresponding to the contact portion and the second contact portion, the third contact portion has a seal insertion hole that can be inserted from the outside to the inside of the conductor housing portion, and each of the seal contact holes It has a shape that keeps the inside of the conductor accommodating portion in a sealed state by being in close contact with the first, second, and third contact portions that are inserted through the insertion holes, and the short-circuit conductor includes the first contact portions. And a terminal contact portion that contacts the third contact portion in addition to the terminal contact portion that contacts the second contact portion, respectively, and each terminal contact portion, the first contact portion, the second contact portion, and the third contact portion. The first terminal, the second terminal, and the If it has a shape that shorting the third contact portion to each other, good.

  When the grounding wire is connected to a device that requires waterproofing, it is possible to reinforce waterproofing only for the grounding wire while maintaining the simple structure of the joint connector for shielding according to the present invention. It is. Specifically, in the case where the housing includes the terminal accommodating portion, a third main body portion including a portion to be crimped to the end of the grounding electric wire, and an axial direction of the grounding electric wire from the third main body portion. A third terminal having a third contact portion extending; and a waterproof plug made of an elastic member and mounted around the grounding wire behind the third terminal. In addition to the seal insertion holes corresponding to the contact portion and the second contact portion, the third contact portion has a seal insertion hole that can be inserted from the outside to the inside of the conductor housing portion, and each of the seal contact holes It has a shape that keeps the inside of the conductor accommodating portion in a sealed state by being in close contact with the first, second, and third contact portions that are inserted through the insertion holes, and the short-circuit conductor includes the first contact portions. And contact with the second contact portion, respectively. In addition to the terminal contact portion, a terminal contact portion that contacts the third contact portion is provided, and the first terminal is brought into contact with each of the terminal contact portion and the first contact portion, the second contact portion, and the third contact portion. The second terminal and the third contact portion are short-circuited to each other, and the terminal accommodating portion of the housing accommodates the third main body portion in addition to the first main body portion and the second main body portion. In addition, it is preferable to have a sealing inner peripheral surface that prevents moisture from entering the housing by being in close contact with the waterproof plug over the entire periphery behind the third main body portion.

  As described above, the present invention provides a shield joint connector capable of collectively connecting a plurality of shield drain lines to a predetermined ground site without significantly complicating the structure and increasing the cost. To do.

It is a disassembled perspective view of the joint connector for shielding which concerns on embodiment of this invention. It is an assembly perspective view of the joint connector for shielding. It is a top view of the said joint connector for shielding. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a perspective view which shows the state with which the 1st or 2nd terminal of the said joint connector for shielding was mounted | worn with the terminal of the drain wire or the earth wire. It is a perspective view which shows the state with which the 3rd terminal of the said joint connector for shielding was mounted | worn with the terminal of the earthing | grounding electric wire. FIG. 4 is a cross-sectional side view showing a state before the first and second terminals are inserted into the housing of the shield joint connector, and is a cross-sectional view taken along a line corresponding to line IV-IV in FIG. 3. FIG. 5 is a cross-sectional side view showing a state before a third terminal is inserted into the housing of the shield joint connector, and is a cross-sectional view taken along a line corresponding to line V-V in FIG. 3. It is a top view which shows the position of the wire harness containing the conventional shielded electric wire.

  An embodiment of the present invention will be described with reference to FIGS.

  1 to 5 show a joint connector for shielding according to an embodiment of the present invention. This joint connector is used to collectively connect a plurality of (six in the illustrated example) drain wires W1 each connected to a shield member (for example, a shield layer provided on a shielded electric wire) to a predetermined ground site. A plurality of first terminals 11, a second terminal 12, a third terminal 13, a short-circuiting conductor 20, a first housing member 30 and a second housing member 40 constituting a housing, and a sealing material 50.

  The first terminal 11 is attached to the terminal of each drain line W1, and the second terminal 12 is connected to the ground line W2 connected to the ground part. The drain wire W1 and the ground wire W2 according to the embodiment are the same insulated wire, that is, a wire having a conductor and an insulating coating covering the conductor, and the first terminal 11 and the second terminal 12 are mutually connected. Have the same shape. For this reason, in each figure, one of the drain line W1 and the ground line W2 and one of the first terminal 11 and the second terminal are representatively shown.

  As shown also in FIG. 6, the said 1st terminal 11 has the 1st main-body part 11b and the 1st contact part 11a integrally. The first main body portion 11b includes a conductor barrel 14 that is crimped around the conductor exposed at the end of the drain wire W1, an insulation barrel 16 that is crimped around the insulating coating behind the conductor barrel 14, and the conductor barrel 14 And a locked portion 15 having a large cross section located on the front side. The first contact portion 11a extends from the locked portion 15 in a rod shape along the axial direction of the drain line W1. That is, the first contact portion 11a is a male electrical contact portion.

  Similar to the first terminal 11, the second terminal 12 integrally includes a second main body portion 12b and a second contact portion 12a. The second main body portion 12b also has a conductor barrel 14 that is crimped around the conductor exposed at the end of the ground wire W2, an insulation barrel 16 that is crimped around the insulating coating behind the conductor barrel 14, and the conductor barrel 14. And a locked portion 15 having a large cross section located on the front side. The second contact portion 12a extends from the locked portion 15 in a rod shape along the axial direction of the ground wire W2. That is, the second contact portion 12a is also a male electrical contact portion.

  The third terminal 13 is attached to the terminal of the grounding wire W3 connected to a normal device (for example, ECU) instead of the shield member. The third terminal 13 is not essential in the present invention and can be omitted as appropriate. As shown in FIG. 7, the third terminal 13 has a third main body portion 13b and a third contact portion 13a integrally, as in the first and second terminals 11 and 12, and a third main body. The portion 13b includes a conductor barrel 14 that is crimped around the conductor exposed at the end of the grounding wire W3, an insulation barrel 16 that is crimped around the insulating coating behind the conductor barrel 14, and a front side of the conductor barrel 14 The third contact portion 13a extends in a rod shape from the locked portion 15 along the axial direction of the grounding wire W3. That is, the third contact portion 13a is also a male electrical contact portion.

  Unlike the first and second terminals 11 and 12 that are crimped to the drain wire W1 and the ground wire W2, the crimped portion of the third terminal 13 that is crimped to the ground wire W3 for electronic equipment is also waterproofed. Therefore, a waterproof plug 18 is used. The waterproof plug 18 is formed in a cylindrical shape by an elastic member such as rubber, and is fitted to the outside of the grounding wire W3 at a position immediately behind the third terminal 13, and a plurality of continuous plugs in the circumferential direction. It has a protrusion 18a.

  The shorting conductor 20 is in contact with the first to third contact portions 11a, 12a, and 13a of the first to third terminals 11, 12, and 13 while being housed in the first housing member 30. Are short-circuited to each other.

  The housing accommodates the short-circuiting conductor 20 and the sealing material 50 and the terminals 11 to 13 in a direction orthogonal to the axial direction (in this embodiment, the left-right direction; hereinafter referred to as “connector width direction”). In this embodiment, as described above, the first housing member 30 and the second housing member 40 are used.

  The first housing member 30 is formed into a container shape that opens in a specific direction (rightward in FIGS. 1 to 5, 8, and 9) with an insulating material such as a synthetic resin. And the sealing material holding part 34 are integrally provided.

  The conductor accommodating portion 32 includes a peripheral wall 35 surrounding a conductor accommodating space having a substantially rectangular cross section that is long in the connector width direction, and a back side (the left side in FIGS. 1 to 5, 8, and 9) of the peripheral wall 35. A back wall 36 for closing is integrally formed, and has a size for accommodating the short-circuiting conductor 20 in the conductor accommodating space. A plurality of recesses 38 arranged in the connector width direction are formed on the inner side surface of the back wall 36, and these recesses 38 open to the conductor receiving space side and are inserted into the conductor receiving portion 32 as will be described later. Each of the terminals 11 to 13 has a shape for receiving the tip ends of the contact portions 11a to 13a.

  The sealing material holding part 34 is constituted by a peripheral wall that is slightly larger than the peripheral wall 35 of the conductor accommodating part 32, and is integrally connected to the opening side end part of the conductor accommodating part 32. Further, a locking projection 33 is provided on the upper surface of the sealing material holding portion 34 so as to protrude upward in order to maintain a coupling state with a second housing member 40 described later.

  In this embodiment, the short-circuiting conductor 20 is formed by bending a single metal plate, and includes a single front-side holding wall 21 and a plurality of terminals connected to the front-side holding wall 21. It has the contact part 22 integrally.

  The front holding wall 21 has a flat plate shape extending in the connector width direction, and is housed in the conductor housing portion 32 in an upright state. The front holding wall 21 is provided with a plurality of holding insertion holes 21 a corresponding to the terminals 11 to 13. These holding insertion holes 21a respectively penetrate the front holding wall 21 in the thickness direction at a plurality of positions aligned in the connector width direction. The diameter of each holding insertion hole 21a allows the corresponding contact portion among the contact portions 11a to 13a of each of the terminals 11 to 13 to be inserted into the holding insertion hole 21a, and the front side in the inserted state. Dimensions that allow the side holding wall 21 to hold the contact portions 11a to 13a (restrict the movement in the direction orthogonal to the insertion direction), that is, slightly outside the outer diameter of the contact portions 11a to 13a. Large dimensions are set.

  Each of the terminal contact portions 22 is provided corresponding to each of the terminals 11 to 13 and is in contact with the contact portions 11a to 13a of the terminals 11 to 13 to realize a mutual short circuit. The terminal contact portion 22 includes a bottom wall 24 extending rearward from the lower edge of the near-side holding wall 21 (back side of the conductor housing portion 32), a back-side holding wall 25 rising from the rear end of the bottom wall 24, and An elastic contact piece 26 extending forward (in a direction approaching the near side holding wall 21) from the upper end of the back side holding wall 25 is integrally provided.

  The front end portion (front end portion) of the elastic contact piece 26 is a free end portion that can be bent and displaced in the vertical direction with the elastic deformation of the terminal contact portion 22. The intermediate portions in the front-rear direction of the bottom wall 24 and the elastic contact piece 26 constitute sandwiching portions 24a and 26a that bulge toward each other (upward in the bottom wall 24 and downward in the elastic contact piece 26). The both holding portions 24a, 26a are viewed from both the upper and lower sides while being accompanied by an upward deflection displacement of the elastic contact piece 26 with respect to the contact portions 11a-13a inserted through the holding insertion holes 21a of the front holding wall 21. The shape of each terminal contact portion 22 is set so as to be sandwiched.

  Similar to the front side holding wall 21, the back side holding wall 25 is provided with a plurality of holding insertion holes 25 a corresponding to the terminals 11 to 13. These holding insertion holes 25a penetrate the depth side holding wall 25 in the thickness direction at a plurality of positions aligned in the connector width direction. Similarly to the holding insertion hole 21a, the hole diameter of each holding insertion hole 25a is such that a corresponding contact portion among the contact portions 11a to 13a of the terminals 11 to 13 is inserted into the holding insertion hole 25a. A dimension that allows and allows the back-side holding wall 25 to hold the contact portions 11a to 13a in the inserted state (restricts movement in a direction orthogonal to the insertion direction), that is, the contact portion 11a. It is set to a dimension slightly larger than the outer diameter of ˜13a.

  The sealing material 50 is formed in a block shape from an elastic material such as rubber, and has an outer surface that is in close contact with the inner surface of the sealing material holding portion 34. That is, the sealing material 50 can be fitted to the inside of the sealing material holding part 34 without a gap, and the opening of the conductor accommodating part 32, that is, the insertion of the contact parts 11a to 13a of the terminals 11 to 13 by the fitting. It has a shape that closes the mouth.

  The sealing material 50 has a plurality of sealing insertion holes 52 corresponding to the contact portions 11a to 13a. These sealing insertion holes 52 penetrate the sealing material 50 in the thickness direction (the connector longitudinal direction) at a plurality of positions aligned in the connector width direction. The diameter of each sealing insertion hole 52 is such that a contact portion (any one of the contact portions 11a to 13a) corresponding to the sealing insertion hole 52 is inserted from the outside to the inside of the conductor housing portion 32. And the inner peripheral surface of the sealing material 50 surrounding the sealing insertion hole 52 in the inserted state is in close contact with the contact portion, thereby holding the inside of the conductor accommodating portion 32 in a sealed state. Such a dimension, that is, a dimension slightly smaller than the outer diameter of the contact portions 11a to 13a is set.

  For each of the contact portions 11a to 13a, the positions of the sealing insertion hole 52 of the sealing material 50, the holding insertion holes 21a and 25a of the short-circuiting conductor 22, and the recess 38 of the back wall 36 are the front-rear direction. It is set to line up in a straight line. That is, the positions of these holes are such that the contact portion (any one of the contact portions 11a to 13a) inserted into the sealing insertion hole 52 passes through the holding insertion holes 21a and 25a of the short-circuiting conductor 20 as it is and the inner wall. It is set so as to be able to reach 36 recesses 38. In other words, the short-circuiting conductor 20 has a posture in which the holding insertion holes 21a and 25a are arranged on a straight line connecting the corresponding sealing insertion hole 52 and the concave portion 38 in the conductor accommodating portion 32. And a plurality of terminal contact portions 22 that are in contact with the first to third contact portions 11a to 13a inserted into the conductor accommodating portion 32 through the seal insertion holes 52, respectively. It has the shape which short-circuits each said terminals 11-13 mutually by contact with the part 22 and the said contact parts 11a-13a.

  Similar to the first housing member 30, the second housing member 40 is formed of an insulating material such as synthetic resin, and is combined with the first housing member 30 to constitute a housing as a whole. Specifically, the second housing member 40 integrally includes a housing coupling portion 41 and a terminal accommodating portion 42.

  The housing coupling portion 41 is a portion coupled to the sealing material holding portion 34 in the first housing member 30 and has an inner circumferential surface that can be fitted to the outer circumferential surface of the sealing material holding portion 34. The housing coupling portion 41 has a top wall positioned on the upper side of the upper surface of the first housing member 30, and the top wall is provided with a lock hole 43 that can be engaged with each of the locking protrusions 33. . These lock holes 43 have a shape that penetrates the top wall in the vertical direction and allows the lock projections 33 to be fitted into the lock holes 43, and the sealing material holding portion 34 is thereby fitted. And the coupling state of the housing coupling part 41 is maintained.

  The terminal accommodating portion 42 is located on the opposite side (front side) of the conductor accommodating portion 32 with the sealing material 50 held by the sealing material holding portion 34 interposed therebetween, and the first to third terminals 11 to 13 are arranged. The first to third main body portions 11b to 13b are accommodated and held so that they are aligned in the connector width direction. Specifically, the terminal accommodating portion 42 includes a plurality of terminal accommodating chambers 44 that allow the first and second terminals 11 and 12 to be inserted, and a terminal accommodating chamber 46 that allows the third terminal 13 to be inserted. Has a shape surrounding.

  The terminal accommodating chamber 44 is arranged in the connector width direction, extends in the connector width direction, guides the first terminal 11 (or the second terminal 12) inserted into the terminal accommodating chamber 44 in the front-rear direction, and the first. The contact portion 11 a (or the second contact portion 12 a) has a shape that leads to the sealing insertion hole 52 of the sealing material 50. The terminal accommodating chamber 46 is located on one outer side (right side in FIG. 1) in the arrangement direction of the terminal accommodating chamber 44, and, like the terminal accommodating chamber 44, the third terminal 13 inserted into the terminal accommodating chamber 46. The third contact portion 13a is guided in the front-rear direction to guide the third contact portion 13a to the sealing insertion hole 52. The inner peripheral surface surrounding the terminal accommodating chamber 46 has a waterproof plug attached to the grounding wire W3. It forms a cylindrical shape that is in close contact with the 18 protrusions 18a over the entire circumference, and constitutes an inner peripheral surface for sealing that prevents moisture from entering the housing.

  Note that the first to third contact portions 11a to 13a of the first to third terminals 11 and 13 inserted into the terminal accommodation chambers 44 and 46 are disposed in front of the terminal accommodation chambers 44 and 46, respectively. A through-hole 47 is provided to allow insertion into the seal insertion hole 52.

  The terminal accommodating portion 42 has a plurality of lances 45 positioned in the terminal accommodating chambers 44 and 46, respectively. These lances 45 function as a terminal locking portion that locks the main body portions 11b to 13b of the terminals 11 to 13 inserted into the terminal accommodating chambers 44 to 46 to prevent the movement in the detaching direction. Specifically, each lance 45 has a cantilever shape having a rear end connected to the top wall of the terminal accommodating portion 42 and a front end that can be deflected and displaced in the vertical direction. It has a shape that allows insertion of the locked portion 15 and returns to the original position when the insertion is completed to restrain the locked portion 15 from the rear.

  In this embodiment, the housing is formed by combining the first housing member 30 and the second housing member 40, but the housing according to the present invention may be formed as a single member as a whole. However, forming the housing by combining the first housing member 30 having the conductor housing portion 32 and the sealing material holding portion 34 with the second housing member 40 having the terminal housing portion 42 is for short-circuiting into the housing. The assembly of the conductor 20 and the sealing material 50 is facilitated.

  According to the shield joint connector according to this embodiment, all the drain wires W1 (and the ground wire W3 in this embodiment) can be collectively connected to a common ground site, for example, in the following manner. Is possible.

1) Crimping of terminals 11 to 13 to each wire The conductor barrel 14 and the insulation of the first terminal 11, the second terminal 12, and the third terminal 13 are connected to the terminals of the plurality of drain wires W1, the ground wire W2, and the ground wire W3. The connection barrel 16 is crimped. In addition to the third terminal 13, the waterproof plug 18 is also attached to the grounding wire W3.

2) Housing Assembling The housing including the housing of the short-circuiting conductor 20 and the sealing material 50 is assembled. Specifically, a state in which the short-circuiting conductor 20 is disposed in the conductor housing portion 32 of the first housing member 30 and the sealing material 50 is fitted inside the sealing material holding portion 34 of the first housing member 30. Thus, the housing coupling portion 41 of the second housing member 40 is fitted to the outside of the sealing material holding portion 34. As a result, the housing members 30 and 40 are combined to form a housing containing the shorting conductor 20 and the sealing material 50, and the locking projection 33 of the sealing material holding portion 34 and the housing coupling portion 41. The engagement between the housing members 30 and 40 is maintained by the engagement with the lock hole 43.

3) Insertion of the terminals 11 to 13 The plurality of terminal accommodating chambers 44 formed in the terminal accommodating portion 42 of the second housing member 40 are connected to the first terminal 11 and the ground wire W2 attached to the drain wires W1. The mounted second terminal 12 is inserted with the contact portions 11a and 12a at the head. In this embodiment, since all the first terminals 11 and the second terminals 12 have the same shape, these terminals 11 and 12 may be inserted into any terminal accommodating chamber 44. This facilitates the terminal insertion work. On the other hand, the third terminal 13 attached to the grounding wire W3 is inserted into the dedicated terminal accommodating chamber 46 with the third contact portion 13a at the head.

  The first to third terminals 11 to 13 inserted in the terminal accommodating chamber 44 or 46 are guided in the insertion direction as they are, and the contact portions 11a to 13a of the first to third terminals 11 to 13 are inserted through corresponding seals. It is guided to the hole 52. Then, it is inserted into the sealing insertion hole 52 and enters the conductor housing portion 32, and further, is inserted into the holding insertion holes 21 a and 25 a of the short-circuiting conductor 20 and is recessed in the back wall 36 of the first housing member 30. 38.

  At this time, the middle portions of the first to third contact portions 11a to 13a are in contact with the corresponding terminal contact portions 22, whereby the terminals 11 to 13 are short-circuited to each other through the short-circuiting conductor 20. The Accordingly, the plurality of drain wires W1 to which the first terminals 11 are attached and the grounding wire W3 to which the third terminals 13 are attached include the shorting conductor 20, the second terminal 12 in contact with the shorting conductor 20, and the second terminal. They are collectively connected to a common ground portion (not shown) via a ground wire W2 to which the terminal 12 is attached.

  Here, since the inside of the conductor accommodating portion 32 that accommodates the short-circuit conductor 20 is sealed by the sealing material 50 that closes the opening and is in close contact with the contact portions 11a to 13a, Contact portions between the terminal contact portion 22 and the first to third contact portions 11a to 13a are efficiently and collectively waterproofed. Thereby, the corrosion of the said contact part etc. is prevented and high connection reliability is given. In addition, since this waterproof structure is a simple structure in which the conductor accommodating portion 32 that opens in a specific direction is simply covered with the sealing material 50, compared to the case where a heavy waterproof structure that a normal waterproof connector is provided is applied. Further, the complexity of the structure and the cost increase are effectively suppressed.

  On the other hand, unlike the first terminal 11 attached to the drain wire W1 and the second terminal 12 attached to the ground wire W2, the third terminal 13 attached to the ground wire W3 connected to the electronic device is In addition to the waterproof structure, the waterproof plug 18 attached to the grounding wire W3 is in close contact with the inner peripheral surface surrounding the terminal accommodating chamber 46, so that the entire third terminal 13 is securely sealed in the housing. . Thereby, not only the contact part of the 3rd contact part 13a and the terminal contact part 22, but the crimping | compression-bonding part of the said 3rd terminal 13 and the said electric wire W3 for earth | grounds is protected effectively.

  In the present invention, the holding insertion holes 21a and 25a of the short-circuiting conductor 20 and the recess 38 of the back wall 36 are not essential. However, the contact portions 11a to 13a to the holding insertion holes 21a and 25a (the first contact portion 11a and the second contact portion 12a when the third terminal 13 is omitted, the same applies hereinafter) and the recesses. The insertion of the contact portions 11a to 13a into the plate 38 has an effect of stabilizing the positions and postures of the contact portions 11a to 13a and further stabilizing the contact between the contact portions 11a to 13a and the corresponding terminal contact portions 22. is there. In particular, as the terminal holding wall, the front side holding wall 21 located on the side closer to the sealing material 50 across the contact portion between the elastic contact portion 22 and the first to third contact portions 11a to 13a, It is a stable contact that includes both the rear holding wall 25 located on the opposite side of the sealing material 50 across the contact portion and restrains the contact portions 11a to 13a by the both holding walls 21 and 25. It is effective for. Moreover, that the said recessed part 38 receives the said contact parts 11a-13a makes it possible to hold | maintain the said contact parts 11a-13a also on the conductor accommodating part 32 side.

W1 Drain wire W2 Ground wire W3 Ground wire 11 First terminal 11a First contact portion 11b First body portion 12 Second terminal 12a Second contact portion 12b Second body portion 13 Third terminal 13a Third contact portion 13b Third Body portion 14 Conductor barrel 15 Locked portion 16 Insulation barrel 20 Short-circuit conductor 21 Front holding wall 21a Holding insertion hole 22 Terminal contact portion 24 Bottom wall 24a Holding portion 25 Back holding wall 25a Holding insertion hole 26 Elasticity Contact piece 30 First housing member 32 Conductor receiving portion 34 Sealing material holding portion 36 Back wall 38 Recess 40 Second housing member 41 Housing coupling portion 42 Terminal receiving portion 44, 46 Terminal receiving chamber 45 Lance (terminal locking portion)
50 Seal material 52 Insertion hole for seal

Claims (10)

A joint connector for shielding for collectively connecting a plurality of drain wires each connected to a shield member to a predetermined ground site,
A plurality of first terminals each having a first contact portion attached to a terminal of each drain line and extending in a specific direction;
A second terminal attached to a terminal of a ground wire connected to the ground part and having a second contact portion extending in a specific direction;
A short-circuiting conductor for short-circuiting each of the first terminals and the second terminal;
A housing including a conductor accommodating portion that opens in a specific direction and can accommodate the short-circuit conductor;
A sealing material made of an elastic material and attached to the housing so as to close the opening of the conductor accommodating portion;
The seal material has a plurality of seal insertion holes through which the first contact portions and the second contact portions can be inserted from the outside to the inside of the conductor housing portion, and the seal insertion holes It has a shape that keeps the inside of the conductor accommodating portion in a sealed state by closely contacting the first contact portion or the second contact portion that is inserted,
The short-circuiting conductor has a plurality of terminal contact portions that are in contact with the first and second contact portions that are inserted into the conductor accommodating portions through the seal insertion holes, respectively. A joint connector for shielding having a shape in which the first terminal and the second terminal are short-circuited to each other by contact with the first and second contact portions.   2. The shield joint connector according to claim 1, wherein the short-circuiting conductor has a plurality of holding insertion holes into which the first contact portion and the second contact portion inserted into the conductor housing portion can be respectively inserted. And a terminal holding wall that holds the first contact portion and the second contact portion in the inserted state, and each terminal contact portion is inserted into a holding insertion hole of the terminal holding wall. Or the joint connector for shielding which has a shape which contacts a 2nd contact part, elastically deforming.   3. The shield joint connector according to claim 2, wherein the short-circuiting conductor is, as the terminal holding wall, the seal than the contact portion where the elastic contact portion contacts the first contact portion or the second contact portion. A shield joint connector having both a front side holding wall located on the side close to the material and a back side holding wall located on the opposite side of the seal material across the contact portion.   The shield joint connector according to claim 3, wherein the back side holding wall constitutes a part of the terminal contact portion.   It is a joint connector for shielding in any one of Claims 1-4, Comprising: The conductor accommodating part of the said housing is located in the back | inner side rather than the said sealing material, and has a back wall facing the said sealing material, A shield joint connector, wherein a plurality of recesses are provided on the back wall for receiving the tip portions of the first and second contact portions inserted into the conductor housing portion.   It is a joint connector for shielding in any one of Claims 1-5, Comprising: Each said 1st terminal has a 1st main-body part each including the part crimped | bonded to the terminal of each said drain wire, respectively, These The first contact portions extend from the first body portion along the axial direction of the drain wire, and the second terminal has a second body portion including a portion to be crimped to the end of the ground wire, The shield joint connector, wherein the second contact portion extends from the second main body portion along the axial direction of the ground wire.   The shield joint connector according to claim 6, wherein the housing is positioned on a side opposite to the conductor accommodating portion with the seal member interposed therebetween, and the first and second terminals of the first terminal and the second terminal. A plurality of terminal latches having a terminal accommodating part for accommodating the main body part, and the terminal accommodating part latching the first main body part and the second main body part to prevent the main body part from moving in the detaching direction. A joint connector for shielding having a portion.   The shield joint connector according to claim 6, wherein all the first terminals and the second terminals have the same shape.   The shield joint connector according to claim 1, further comprising a third contact portion extending in a specific direction, wherein the third contact portion is attached to a ground wire different from the drain wire and the ground wire. In addition to a terminal, the seal material can be inserted from the outside to the inside of the conductor housing portion in addition to the seal insertion hole corresponding to each of the first contact portion and the second contact portion. And has a shape for holding the inside of the conductor accommodating portion in a sealed state by being in close contact with the first, second, and third contact portions inserted through the sealing insertion holes, respectively. The short-circuiting conductor has terminal contact portions that contact the third contact portions in addition to the terminal contact portions that contact the first contact portions and the second contact portions, respectively. And the first contact portion and the second contact portion Beauty said first terminal by contact with the third contact portion has a second terminal and configured to short the third contact portion to each other, the joint connector shield.   8. The shield joint connector according to claim 7, comprising a third body portion including a portion to be crimped to a terminal of an earth wire connected to a device that is required to be waterproof, and the ground wire from the third body portion. A third terminal having a third contact portion extending along the axial direction; and a waterproof plug made of an elastic member and mounted around the grounding wire behind the third terminal. In addition to the seal insertion holes corresponding to the first contact portions and the second contact portions, the third contact portion has a seal insertion hole that can be inserted from the outside to the inside of the conductor housing portion, And it has a shape which holds the inside of the conductor accommodating part in a sealed state by being in close contact with the first, second and third contact parts inserted through the sealing insertion holes, respectively, Each first contact portion and the second contact In addition to the terminal contact portion that contacts each other, the terminal contact portion that contacts the third contact portion, and the contact between each terminal contact portion and the first contact portion, the second contact portion, and the third contact portion The first terminal, the second terminal, and the third contact portion are short-circuited to each other, and the terminal accommodating portion of the housing is configured to include the third body portion in addition to the first body portion and the second body portion. A shield joint connector having a sealing inner peripheral surface that accommodates a main body portion and is in close contact with the waterproof plug at the rear of the third main body portion to prevent moisture from entering the housing.

Images