JP3914192B2 - Joint connector - Google Patents

Description

  The present invention relates to a joint connector having a branch / joint circuit for selectively electrically connecting a plurality of terminals.

  For example, a joint connector is used to branch an electric wire of a wire harness routed in a vehicle or to joint a plurality of electric wires. As this type of conventional joint connector, there is one shown in FIGS. 15 and 16 (see, for example, Patent Document 1).

  As shown in FIGS. 15 and 16, the joint connector 100 is inserted into a connector housing 103 in which a plurality of terminal accommodating chambers 101 and a plurality of terminal insertion holes 102 are formed, and each terminal insertion hole 102, and an electrode is provided at the tip. A plurality of terminals 104 formed with a portion 104a, and a plurality of conductive layers 105 that are attached to the surface of the connector housing 103 where the electrode portion 104a of the terminal 104 is exposed and electrically connect between desired terminals 104. I have.

Each terminal 104 is disposed in the terminal accommodating chamber 101 of the connector housing 103, and when a mating connector (not shown) is attached, the terminals 104 corresponding to each other are brought into electrical contact. Then, the terminals 104 conducted by the conductive layer 105 are connected to branch or joint an electric wire (not shown) between the wire harnesses via the joint connector 100.
JP 2003-17161 A

  In the conventional joint connector 100, only the terminals 104, 104 adjacent to each other can be electrically connected via the conductive layer 105, and only the terminals 104, 104 that are not adjacent to each other cannot be electrically connected via the conductive layer 105. . Here, electrical conduction can be achieved by forming the conductive layer 105 so as to bypass the non-conductive terminal 104. However, there is a problem that the joint connector 100 is increased in size because a plurality of terminals 104 must be arranged with a space for forming a detour in the conductive layer 105, and the terminals 104 cannot be arranged with high-density mounting. there were.

  In addition, since the conductive layer 105 is formed by a conductive paste or plating and has a small cross-sectional area as a conductive path, the joint connector 100 is limited to a minute current circuit, and there is a problem that it cannot cope with a large current circuit.

  Accordingly, the present invention has been made to solve the above-described problems, and can electrically connect between adjacent terminals while maintaining high-density mounting of terminals, and can cope with a large current circuit. An object is to provide a joint connector.

According to the first aspect of the present invention, the terminal accommodating chamber, the first layer fixing surface in which the first fixing groove is formed, and the first layer fixing surface are arranged with a space therebetween, and the second fixing groove is formed. A connector housing having a two-layer fixing surface; a plurality of terminal portions; and a connecting portion for connecting the plurality of terminal portions. The terminal housing chamber is fixed to a first fixing groove of the first layer fixing surface. The first bus bar forming at least one first bus bar layer, a plurality of terminal portions and a connecting portion for connecting them, and fixed to the second fixing groove of the second layer fixing surface. A joint connector including one or more second bus bars forming a second bus bar layer by arranging each terminal portion in the terminal accommodating chamber , wherein the first fixing groove and the second fixing bar are provided. The groove is the same position on the front and back surfaces of the insulating wall of the connector housing. Characterized in that it is formed into a shape.

In this joint connector, as long as each bus bar in the same layer is arranged without crossing each other, the terminal portions at the desired positions are freely connected to each other. The parts are freely brought into conduction. In addition, since a bus bar having a large cross-sectional area is used as a conduction path, it is not limited to a minute current circuit. In particular, the first bus bar and the second bus bar are arranged in each of the vertical and horizontal directions and at any position.

Invention of Claim 2 is the joint connector of Claim 1 , Comprising: The through-hole which penetrates the said insulating wall was each provided in the intersection of the lattice shape of the said 1st fixing groove and the said 2nd fixing groove. It is characterized by.

In this joint connector, in addition to the operation of the first aspect of the invention, when the bus bar of the first bus bar layer is fixed to the first layer fixing surface, the position of the terminal portion may be aligned with the grid-like intersection. Further, when the bus bar of the second bus bar layer is fixed to the second layer fixing surface, each terminal portion may be fixed in a state of passing through each desired through hole. Further, the second bus bar is firmly fixed to the second layer fixing surface.

A third aspect of the present invention is the joint connector according to the second aspect , wherein the first bus bar has a protruding portion protruding in a direction opposite to the terminal portions, and the protruding portion is inserted into the through hole. It is characterized by that.

In this joint connector, in addition to the operation of the invention of claim 2 , the first bus bar is firmly fixed to the first layer fixing surface.

As described above, according to the invention of claim 1, the connector housing having the first layer fixing surface in which the first fixing groove is formed and the second layer fixing surface in which the second fixing groove is formed; A second fixing groove having a plurality of terminal portions and a connecting portion for connecting them, and having one or more first bus bars fixed to the first fixing groove; a plurality of terminal portions and a connecting portion for connecting them; Since one or more second bus bars fixed to each other, each bus bar in the same layer can be placed in a conductive state freely as long as the bus bars in the same layer are arranged without crossing each other. Even if they are arranged to cross each other, the terminal portions at desired positions can be freely brought into conduction. Therefore, although the bus bar layer is composed of a plurality of layers, non-adjacent terminals can be freely connected while maintaining high-density mounting of terminals. In addition, since a bus bar having a large cross-sectional area is used as a conduction path, it is not limited to a minute current circuit. In particular, since the first fixed groove and the second fixed groove are formed in a lattice shape at the same position on the front and back surfaces of the insulating wall, the first bus bar and the second bus bar are in each of the vertical and horizontal directions and at which position. Can also be placed. Therefore, it is possible to easily cope with the change of the circuit pattern.

According to the second aspect of the present invention, since the through holes that penetrate the insulating wall are provided at the lattice-shaped intersections of the first fixing groove and the second fixing groove, respectively, when the first bus bar is fixed to the first layer fixing surface In addition, since the position of the terminal portion may be aligned with the grid-like intersection, the first bus bar can be easily fixed at an appropriate position. Further, when the second bus bar is fixed to the second layer fixing surface, it is only necessary to fix each terminal portion in a state of passing through each desired through hole, so that the second bus bar can be easily fixed at an appropriate position. . Further, the second bus bar can be firmly fixed to the second layer fixing surface.

According to the invention of claim 3 , the first bus bar has the protruding portion protruding in the opposite direction to each terminal portion, and the protruding portion is inserted into the through hole, so that the first bus bar is firmly fixed to the first layer. Can be fixed to the surface.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 13 show an embodiment of the present invention, FIG. 1 is a schematic perspective view of a joint connector, FIG. 2A is a cross-sectional view of the joint connector, and FIG. 2B is A in FIG. FIG. 3 is a perspective view showing a state before fixing the first bus bar and the second bus bar to the partition wall, and FIG. 4 is a perspective view showing the first bus bar and the second bus bar on the partition wall. FIG. 5 is a sectional view taken along line BB in FIG. 4, FIG. 6 is a sectional view taken along line CC in FIG. 4, and FIG. 7 is a connecting bus bar between the third bus bars. FIG. 8 is a cross-sectional view showing a state in which the connecting bus bar is fixed to the bus bar fixing slit, and FIGS. 9 to 13 are cross-sectional views showing each assembly process of the joint connector.

  As shown in FIGS. 1 and 2, the joint connector 1 has a connector housing 2 made of a synthetic resin and having a substantially rectangular box shape. The connector housing 2 is detachably attached to the housing body 3 and to the rear of the housing body 3. And a cover 4 attached to the cover. Both the housing body 3 and the cover 4 are formed of an insulator.

  A partition wall 5, which is an insulating wall, is provided inside the housing body 3, and a terminal storage chamber 6 is formed in the front and a component storage chamber 7 is formed in the rear, with the partition wall 5 as a boundary. The cover 4 is disposed so as to close the rear surface that is the opening surface of the component housing chamber 7.

  As shown in FIGS. 2 to 6, the front and rear surfaces of the partition wall 5 have a surface facing the terminal accommodating chamber 6 as the first layer fixing surface 10 and a surface facing the component accommodating chamber 7 as the second layer fixing surface 11. Each is formed. A first fixing groove 12 and a second fixing groove 13 are formed on the first layer fixing surface 10 and the second layer fixing surface 11, respectively. These fixing grooves 12 and 13 are formed in a lattice shape at the same position on the front and back surfaces. Has been. The vertical and horizontal pitch p of the lattice is set to the pitch dimension between the terminal portions 15 a of the terminal accommodating chamber 6. Through holes 14 penetrating the front and back surfaces of the partition wall 5 are respectively formed at the lattice-shaped intersections of the first fixed groove 12 and the second fixed groove 13. That is, the through-holes 14 are formed in the partition wall 5 in the vertical and horizontal directions at a vertical and horizontal pitch p between the terminal portions 15a. The first layer fixing surface 10 includes one or more first bus bars 15A that form the first bus bar layer, and the second layer fixing surface 11 includes one or more second bus bars 15B that form the second bus bar layer. It is fixed.

  Each first bus bar 15A includes two or more terminal portions 15a, a connecting portion 15b for connecting them, and a protruding portion 15c protruding in the opposite direction to the terminal portion 15a. In the first bus bar 15A, the interval P1 between the terminal portions 15a is an integral multiple of the vertical and horizontal pitch p of the lattice (FIG. 2 (a), FIG. 3 and FIG. 4 show one pitch). Is set. The height H <b> 1 of each terminal portion 15 a is set to a dimension that protrudes into the terminal accommodating chamber 6. The height h of each protrusion 15 c is set to be shorter than the distance a between the first fixing groove 12 of the first layer fixing surface 10 and the second fixing groove 13 of the second layer fixing surface 11. The first bus bar 15A is made of a metal material that is conductive and has high rigidity, and has a sufficient cross-sectional dimension that allows a large current to flow therethrough.

  Each of the first bus bars 15A formed in this way is fixed at an appropriate position on the first layer fixing surface 10 by pressing the connecting portion 15b into the first fixing groove 12. Each terminal portion 15 a protrudes into the terminal accommodating chamber 6, and each projection portion 15 c is inserted into the through hole 14.

  Each second bus bar 15B is composed of two or more terminal portions 15a and a connecting portion 15b for connecting them. In the second bus bar 15B, the interval P2 between the terminal portions 15a is an integral multiple of the vertical and horizontal pitch p of the lattice (FIG. 2 (a), FIG. 3 and FIG. 4 show three pitches). Is set. The height H2 of each terminal portion 15a is set to a dimension obtained by adding approximately the thickness of the partition wall 5 to the height H1 of the terminal portion 15a of the first bus bar 15A. The second bus bar 15B is made of a metal material that is conductive and has high rigidity, and has a sufficient cross-sectional dimension that allows a large current to flow therethrough.

  Each of the second bus bars 15 </ b> B formed in this way is fixed at an appropriate position on the second layer fixing surface 11 by press-fitting the connecting portion 15 b into the second fixing groove 13. Each terminal portion 15 a protrudes from the through hole 14 of the partition wall 5 into the terminal accommodating chamber 6.

  As shown in FIG. 2A, the bus bar-attached body 20 is formed in an eccentric square shape from an insulating material, and is mounted in the component housing chamber 7 of the housing body 3. The back surface of the busbar-attached body 20 is arranged with a space from the second layer fixing surface 11, and this back surface is formed as the third layer fixing surface 21. A third fixing groove 22 is formed on the third layer fixing surface 21, and the third fixing groove 22 is formed in a lattice shape at the same position as the first and second fixing grooves 12 and 13. . The vertical and horizontal pitch p of the lattice is set to the pitch dimension between the terminal portions 15 a of the terminal accommodating chamber 6. At each intersection of the lattice shape of the third fixing groove 22, similarly to the second fixing groove 13, a through hole 23 penetrating the surface of the busbar-attached body 20 is formed. That is, the through-holes 23 are formed in the vertical and horizontal directions in the bus bar-attached body 20 at vertical and horizontal pit intervals of the terminal portions 15a. One or more third bus bars 15C forming the third bus bar layer are fixed to the third layer fixing surface 21, respectively. In this embodiment, the third bus bar layer is the top layer.

  As shown in FIGS. 2A and 7, each third bus bar 15C in the uppermost layer protrudes in the opposite direction to two or more terminal portions 15a, a connecting portion 15b for connecting them, and the terminal portion 15a. It is comprised from the clamping part 15d which is a connection part to do. In the third bus bar 15C, the interval P3 between the terminal portions 15a is set to be an integral multiple of the vertical and horizontal pitch p of the lattice (in FIG. 2 (a) and FIG. 7, the one with 5 pitches is shown). . The height H3 of each terminal portion 15a is set to a dimension obtained by adding the thickness of the busbar-attached body 20 to the height H2 of the second bus bar 15B. The sandwiching portion 15d has a slit groove 15e at the center, and the connecting bus bar 24 can be press-fitted into the slit groove 15e. The third bus bar 15C is made of a metal material that is electrically conductive and has high rigidity, and has a sufficient cross-sectional dimension that allows a large current to flow therethrough.

  Each third bus bar 15 </ b> C formed in this way is fixed in place on the third layer fixing surface 21 by press-fitting the connecting portion 15 b into the third fixing groove 22. Each terminal portion 15 a protrudes into the terminal accommodating chamber 6 from the busbar-attached body 20 and the through holes 23 and 14 of the partition wall 5. The sandwiching portion 15 d protrudes toward the opening surface of the component housing chamber 7 of the housing body 3.

  Each connection bus bar 24 has a straight flat shape as shown in FIGS. The length L of the connection bus bar 24 is determined according to the interval between the third bus bars 15C to be connected. The connecting bus bar 24 is made of a metal material that is conductive and has high rigidity, and has a sufficient cross-sectional dimension that allows a large current to flow therethrough.

  Each connection bus bar 24 formed in this way is electrically connected between the two or more third bus bars 15C by being sandwiched by the sandwiching portions 15d of the two or more third bus bars 15C of the uppermost layer.

  Further, as shown in FIGS. 2A and 8, a plurality of bus bar fixing slits 25 are formed in the inner surface of the cover 4 in the horizontal direction, and each bus bar fixing slit 25 has a terminal portion with respect to the vertical direction. It is formed for each interval p of 15a. The connecting bus bars 24 are respectively fixed at appropriate positions of the bus bar fixing slits 25.

  Next, a procedure for assembling the joint connector 1 will be briefly described. First, as shown in FIG. 9, the first bus bar 15 </ b> A and the second bus bar 15 </ b> B are fixed to appropriate positions on the first layer fixing surface 10 and the second layer fixing surface 11 of the housing body 3, respectively. A bus bar layer is formed. Thereby, each terminal part 15a of each 1st bus bar 15A and each 2nd bus bar 15B is arrange | positioned in the terminal accommodating chamber 6 in the protruding state.

  Next, as shown in FIG. 10, the busbar-attached body 20 is mounted in the component housing chamber 7 of the housing body 3. Next, as shown in FIG. 11, the third bus bars 15C are respectively fixed at appropriate positions on the third layer fixing surface 21 of the bus bar attached body 20, thereby forming the third bus bar layers. Thereby, each terminal part 15a of the 3rd bus bar 15C is arranged in the terminal storage chamber 6 in the protruding state. Further, the sandwiching portion 15d of the third bus bar 15C is arranged in a direction in which the slit groove 15e faces the opening surface.

  Next, as shown in FIG. 12, the connecting bus bar 24 is fixed at a proper position on the inner surface of the cover 4. Finally, as shown in FIG. 13, the cover 4 is attached to the housing body 3, and each connecting bus bar 24 is clamped by the clamping portion 15 d of the predetermined third bus bar 15 </ b> C in the mounting process. Thereby, two or more 3rd bus bars 15C are electrically connected.

  As shown in FIG. 1, when a plurality of mating connectors 30 are attached to the joint connector 1 formed in this way, the electric wires W connected to the mating connectors 30 are branched or jointed via the joint connector 1. it can.

  As described above, in this joint connector 1, as long as the bus bars 15A, 15B, 15C in the same layer are arranged without crossing each other, the terminal portions 15a at desired positions can be freely brought into conduction, and the bus bars 15A, 15B, Even if 15C is arranged so as to cross each other, the terminal portions 15a at desired positions can be freely brought into conduction. Therefore, the bus bars 15A, 15B, and 15C have a plurality of layers, but the terminal portions 15a that are not adjacent to each other can be freely connected while maintaining the high-density mounting of the terminal portions 15a. Further, since the bus bars 15A, 15B, and 15C having a large cross-sectional area are used as the conduction paths, the present invention is not limited to the minute current circuit.

  In this embodiment, since the first fixed groove 12 and the second fixed groove 13 are provided on the front and back surfaces of the partition wall 5 of the housing body 3, the space between the first bus bar layer and the second bus bar layer is compared with air insulation. Can be reliably insulated at narrow width intervals. Therefore, it contributes to the compactness of the joint connector 1.

  In this embodiment, since the first fixed groove 12 and the second fixed groove 13 are formed in a lattice shape at the same position on the front and back surfaces of the partition wall 5, the first bus bar 15A and the second bus bar 15B are moved in the vertical direction and the horizontal direction. It can be arranged at any position in any direction. Therefore, it is possible to easily cope with the change of the circuit pattern.

  In this embodiment, since the through holes 14 penetrating the partition wall 5 are respectively provided at the intersections of the lattice shapes of the first fixed grooves 12 and the second fixed grooves 13, the first bus bars 15A of the first bus bar layers are provided. When fixing to the first layer fixing surface 10, the first bus bar 15A can be easily fixed at an appropriate position because the position of the terminal portion 15a should be aligned with the grid-like intersection. Further, when fixing the second bus bar 15B of the second bus bar layer to the second layer fixing surface 11, it is only necessary to fix each terminal portion 15a while penetrating through each desired through hole 14, and therefore the second bus bar 15B. Can be easily fixed at an appropriate position. Further, the second bus bar 15B can be firmly fixed to the second layer fixing surface 11.

  In this embodiment, the first bus bar 15A has a protruding portion 15c protruding in the opposite direction to each terminal portion 15a, and the protruding portion 15c is inserted into the through hole 14, so that the first bus bar 15A is firmly attached to the first bus bar 15A. It can be fixed to the layer fixing surface 10.

  In this embodiment, the busbar-attached body 20 is mounted on the housing main body 3 and arranged at intervals on the second layer fixing surface 11 and has a third layer fixing surface 21 in which a third fixing groove 22 is formed. Terminal portion 15a and a connecting portion 15b for connecting them, and are fixed to the third fixing groove 22 of the busbar-attached body 20, and each terminal portion 15a is arranged in a protruding state in the terminal accommodating chamber 6 so that the first Since one or more third bus bars 15C forming three bus bar layers are provided, the number of bus bar layers and the total bus bars can be increased, and a complicated branch / joint circuit can be handled. Further, since the busbar attached body 20 is interposed between the second busbar layer and the third busbar layer, the second busbar layer and the third busbar layer are reliably insulated with a narrower width interval than the air insulation. it can. Therefore, it contributes to the compactness of the joint connector 1.

  In this embodiment, there is one bus bar-equipped body 20 to be mounted on the housing body 3, but two or more bus bar-equipped bodies 20 may be mounted to form four or more bus bar layers. Thus, the more the busbar layer is increased, the more complex branch / joint circuit can be handled.

  In this embodiment, the third bus bar 15C forming the uppermost layer has the clamping portion 15d that protrudes in the opposite direction to the terminal portion 15a, so that the third bus bar 15C of the uppermost layer can be connected. Therefore, a more complicated branch / joint circuit can be formed.

  In this embodiment, the sandwiching portions 15d of the two or more third bus bars 15C in the uppermost layer are connected by the connecting bus bar 24, so that the two or more sandwiching portions 15d can be firmly and easily connected. .

  In this embodiment, since the connecting portion is the holding portion 15d having the slit groove 15e, it can be fixed by press-fitting the connecting bus bar 24 into the slit groove 15e of the holding portion 15d. Therefore, the fixing work of the connection bus bar 24 is easy.

  In this embodiment, the connector housing 2 includes a housing body 3 and a cover 4 that is attached to the housing body 3 and closes the opening surface of the housing body 3. The bus bar 15C has the slit groove 15e of the holding portion 15d arranged toward the opening surface, and the bus bar fixing slit 25 for fixing the connecting bus bar 24 is provided on the inner surface of the cover 4, so that the bus bar fixing slit 25 of the cover 4 is provided. When the cover 4 is mounted on the housing body 3 after the connection bus bar 24 is fixed, the connection bus bar 24 is press-fitted into the holding portion 15d of the third bus bar 15C as the uppermost layer. Accordingly, the connecting bus bar 24 can be easily connected to the clamping portion 15d of the uppermost third bus bar 15C.

  FIG. 14 is a perspective view showing a modification in which the third bus bars 15C are connected to each other, and a state in which the holding portions 15d of the third bus bars 15C are connected by the electric wires 26. That is, in this modified example, the connecting portion is formed as the holding portion 15d as in the above embodiment, but the electric wires 26 are press-fitted into the holding portions 15d of the third bus bars 15C instead of the connecting bus bars 24, respectively. . Moreover, the electric wire 26 has a sufficient cross-sectional dimension capable of passing a large current.

  In this modification, since the electric wire 26 that can be changed to a desired shape by easy bending is used, even the sandwiching portions 15d at oblique positions can be easily connected.

  In this modification, the connecting portion is the holding portion 15d having the slit groove 15e, and can be fixed by press-fitting the electric wire 26 into the slit groove 15e of the holding portion 15d. Therefore, the fixing work of the electric wire 26 is easy.

  In addition, according to the said embodiment, although the uppermost layer of a bus bar is a 3rd bus bar layer, you may set a 2nd bus bar layer as an uppermost layer. In this case, it is not necessary to use the busbar attached body 20. The second bus bar 15B may be the same as that of the above-described embodiment, but the second bus bar 15B may have a connection part (a clamping part 15d) like the third bus bar 15C. By using the bus bar in such a form, the second bus bars 15B can be electrically connected by the connecting bus bar 24 and the electric wire 26. Conversely, the uppermost layer of the bus bar may be set to the fourth layer or higher. In this case, two or more busbar attached bodies 20 are used.

  In the embodiment, the first, second, and third bus bars 15A, 15B, and 15C are all formed in a straight shape. However, the connecting portion 15b may be formed in a shape that is bent along the lattice shape. good. If it does in this way, between the terminal parts 15a whose positional relationship is a diagonal position can be electrically connected. Moreover, although the connection bus bar 24 is formed in a straight shape, it may be formed in a bent shape. In this way, the degree of freedom in designing the branch / joint circuit can be expanded.

1 is a schematic perspective view of a joint connector according to an embodiment of the present invention. 1A and 1B show an embodiment of the present invention, in which FIG. 2A is a cross-sectional view of a joint connector, and FIG. 2B is a layout view of each bus bar as viewed from a cross-section taken along line AA in FIG. It is a perspective view which shows one Embodiment of this invention and shows the state before fixing a 1st bus bar and a 2nd bus bar to a partition wall. It is a perspective view which shows one Embodiment of this invention and shows the state which fixed the 1st bus bar and the 2nd bus bar to the partition wall. FIG. 5 shows an embodiment of the present invention, and is a cross-sectional view taken along line BB in FIG. 4. FIG. 5 shows an embodiment of the present invention and is a cross-sectional view taken along the line CC in FIG. 4. It is a perspective view which shows one Embodiment of this invention and shows the state which connects between 3rd bus bars with a connection bus bar. It is sectional drawing which shows one Embodiment of this invention and shows the state which fixes a connection bus bar to a bus bar fixing slit. It is sectional drawing which shows one Embodiment of this invention and shows the assembly process of a joint connector. It is sectional drawing which shows one Embodiment of this invention and shows the assembly process of a joint connector. It is sectional drawing which shows one Embodiment of this invention and shows the assembly process of a joint connector. It is sectional drawing which shows one Embodiment of this invention and shows the assembly process of a joint connector. It is sectional drawing which shows one Embodiment of this invention and shows the assembly process of a joint connector. It is a perspective view which shows the modification which connects between 3rd bus bars, and shows the state connected between the clamping parts of the 3rd bus bar with the electric wire. It is a front view of a joint connector which shows a conventional example. It is sectional drawing of a joint connector which shows a prior art example.

Explanation of symbols

1 Joint Connector 2 Connector Housing 3 Housing Body 4 Cover 5 Partition Wall (Insulating Wall)
6 Terminal receiving chamber 10 First layer fixing surface 11 Second layer fixing surface 12 First fixing groove 13 Second fixing groove 14 Through hole 15A First bus bar 15B Second bus bar 15C Third bus bar 15a Terminal portion 15b Connecting portion 15c Projecting portion 15d Clamping part (connection part)
15e Slit groove 20 Body with bus bar 21 Third layer fixing surface 22 Third fixing groove 24 Connecting bus bar 25 Bus bar fixing slit 26 Electric wire

Claims (3)

A terminal housing chamber; a first layer fixing surface on which a first fixing groove is formed; and a second layer fixing surface on which the second fixing groove is formed, spaced from the first layer fixing surface. A connector housing;
The first busbar layer is formed by having a plurality of terminal portions and a connecting portion for connecting them, being fixed to the first fixing groove of the first layer fixing surface, and each terminal portion being disposed in the terminal accommodating chamber. One or more first bus bars to be formed;
A plurality of terminal portions and a connecting portion for connecting them are fixed to the second fixing groove of the second layer fixing surface, and each terminal portion is disposed in the terminal accommodating chamber to thereby form the second bus bar layer. A joint connector comprising one or more second bus bars to be formed ,
The joint connector, wherein the first fixing groove and the second fixing groove are formed in a lattice shape at the same position on the front and back surfaces of the insulating wall of the connector housing . The joint connector according to claim 1 ,
A joint connector, wherein a through-hole penetrating the insulating wall is provided at an intersection of the lattice shape of the first fixed groove and the second fixed groove. The joint connector according to claim 2 ,
The first bus bar has a protruding portion that protrudes in the opposite direction to each terminal portion, and the protruding portion is inserted into the through hole.

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