JP4250025B2 - Reinforcement structure of electrical junction box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing structure for an electric junction box which is mounted on an automobile or the like and performs joint absorption of a wire harness.
[0002]
[Prior art]
FIG. 4 shows an example of a conventional electric junction box (Patent Document 1).
[0003]
The electrical connection box 50 includes a case 51 made of insulating resin, a joint bus bar 55 with a terminal, a male terminal 60 having a tab terminal 62, and a fusible link 63. The case 51 is formed with a bus bar accommodating portion 53 including a plurality of terminal accommodating chambers 53a partitioned by a partition wall 52, and a terminal connecting chamber 53b in which the terminal connecting portion 58a of the joint bus bar 55 and the fastening bolt 66 are accommodated. Yes. The partition wall 52 is formed with a notch 52a into which the joint bus bar 55 is inserted vertically. The inserted joint bus bar 55 is pressed against the bottom on the back side in the insertion direction.
[0004]
In the terminal accommodating chamber 53a, a separation portion (not shown) is formed in the substantially vertical center, and a groove is provided in one of the separation portions so that the male terminal 60 is accommodated. On the other side of the separation part, a band accommodating chamber for accommodating the band 56 of the joint bus bar 55 is formed. A bottom portion that contacts the end of the joint bus bar 55 is formed on the back side of the band housing chamber. A retaining lance (not shown) that engages with the hole 61 of the male terminal 60 is formed in the groove, and the retaining lance that engages with the hole 56a of the joint bus bar 55 is formed in the band housing chamber. Each lance 53d is formed.
[0005]
The joint bus bar 55 is formed by punching and bending a conductive substrate. The joint bus bar 55 is bent in a crank shape at one of the belt portion 56, a plurality of tab terminals 57 erected on the belt portion 56, and the belt portion 56. The extended portion 58 is formed. The terminal 67 of the connection electric wire 68 is connected to the terminal connection part 58 a of the extension part 58 via a fastening bolt 66.
[0006]
The fusible link 63 is formed at an insulating resin case 64, a fusible body (not shown) that melts when an overcurrent flows, and an end of the fusible body. It consists of a female terminal 65 connected to a tab terminal 57 of the bus bar 55.
[0007]
According to such a configuration, since the bottom portion is formed in the belt portion accommodation chamber, it is possible to prevent the joint bus bar 55 from being detached from the case 51 when connecting to the female terminal 65 of the fusible link 63. is there.
[0008]
However, in the above-described conventional electrical junction box 50, one joint bus bar 55 is inserted into the case, and it cannot sufficiently cope with the increase in the number of electric wires due to the recent increase in vehicle-mounted components. Met. Further, it has not been possible to flexibly cope with circuit forms of different vehicle types. On the other hand, when a plurality of electrical connection boxes 50 are prepared and attached to the vehicle in order to cope with an increase in the number of wires, there is a problem that the space is increasingly narrowed in a vehicle where there is not enough space.
[0009]
Accordingly, the applicant of the present application has proposed various electrical junction boxes capable of assembling a plurality of bus bars in a vertical direction in order to cope with such problems. Such an electrical junction box has a bus bar accommodating portion with high dimensional accuracy in which a plurality of bus bars are accommodated inside the case, and the bus bar accommodating portion accommodates a thin and long joint bus bar in which a plurality of tab terminals are chained. It has become so.
[0010]
However, the case made of an insulating resin material and molded by injection molding shrinks after injection molding, so that the outer wall of the case is warped, the warp affects the bus bar housing part, and the bus bar housing part is deformed. There was a problem. In particular, when the outer wall of the case or the wall portion of the bus bar housing portion is formed thin, such a problem has been a concern.
[0011]
[Patent Document 1]
Japanese Utility Model Publication No. 3-62474 (page 6-10, FIG. 1 (a))
[0012]
[Problems to be solved by the invention]
In view of the above points, the present invention can form a complex joint circuit, and can maintain and improve the strength of the case with respect to an electrical junction box that can flexibly cope with vehicle type changes, and the like. An object of the present invention is to provide a reinforcing structure for an electrical junction box that can maintain and improve the dimensional accuracy.
[0013]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a connector fitting portion having a plurality of connector fitting chambers for receiving joint connectors is formed on one side and a bus bar is formed on the inside. A case made of an insulating resin having a frame-like outer wall, and a plurality of vertical bus bars and a plurality of horizontal bus bars with tab terminals inserted so as to intersect in the bus bar storage portion; The bus bar housing portion includes a plurality of vertical grooves defined between the partition walls adjacent to each other and a plurality of partition walls extending in one direction, and notches formed in the partition walls are orthogonal to the vertical grooves. And the vertical bus bar and the horizontal bus bar respectively accommodated in the vertical groove and the horizontal groove form a joint circuit and the vertical bus bar. And the tab terminal of the horizontal bus bar is inserted into the connector fitting chamber through the terminal insertion hole formed in the bottom of the bus bar housing portion, and the female terminal of the joint connector inserted into the connector fitting chamber is In an electrical junction box in which an electric wire connected to the tab terminal and connected to the female terminal of the joint connector is connected to the joint circuit, a gap is formed between the partition walls on both sides of the plurality of partition walls and the outer wall of the case. a reinforcing structure joined by a bottom wall while being opposed to each other via a substantially triangular rib connecting the bottom wall and the outer wall, and a substantially triangular ribs connecting said bottom wall and said partition wall Is provided in a reinforcing structure for an electric junction box, wherein a plurality of the outer wall and the partition walls on both sides of the bus bar accommodating portion are alternately arranged .
According to the said structure, it has the connector fitting part opened at one side which has multiple connector fitting chambers which receive a joint connector, and the bus-bar accommodating part formed inside each back to back. And a case made of an injection-molded insulating resin having a frame-shaped outer wall, a plurality of vertical bus bars with a tab terminal and a plurality of horizontal bus bars that are inserted so as to intersect in the bus bar housing portion, and the bus bar housing portion A plurality of vertical grooves formed between adjacent partition walls of a plurality of partition walls extending in one direction, and a horizontal groove formed by communicating notches formed in the plurality of partition walls in a direction perpendicular to the vertical grooves, The vertical bus bar and the horizontal bus bar respectively accommodated in the vertical groove and the horizontal groove form a joint circuit, and the tab terminals of the vertical bus bar and the horizontal bus bar are formed at the bottom of the bus bar accommodating portion. The joint connector is inserted into the connector fitting chamber through the terminal insertion hole, the female terminal of the joint connector inserted into the connector fitting chamber is connected to the tab terminal, and the electric wire connected to the female terminal of the joint connector is connected to the joint circuit. Since the electrical connection box is diversified, the circuit form can be diversified, a complicated joint circuit can be formed, the vehicle type can be changed flexibly, and the partition walls on both sides of the plurality of partition walls. And the outer wall of the case are opposed to each other through a gap and are connected by a bottom wall, and a plurality of ribs connecting the bottom wall and the outer wall and a plurality of ribs connecting the bottom wall and the partition wall are provided. Swarf due to shrinkage after injection molding of the outer wall connected to the bottom wall and the partition walls on both sides, the partition walls on both sides of the partition wall are opposed to the outer wall through a gap and are connected and reinforced by the bottom wall. It is prevented reinforced respectively by the ribs.
[0014]
Also, Li blanking is according to the configuration Ru triangular der, is reinforced base side on both sides of the partition walls of the outer wall and the bus bar accommodating portion, effectively of both wall deformation is prevented.
[0015]
Also, Li Bed double number, according to the configuration which are arranged alternately along the both sides of the partition walls of the outer and bus bus bar accommodating portion, on both sides of the bulkhead and is well-balanced comparable outer wall and the bus bar accommodating portion It is reinforced, and it is possible to prevent the wall from being biased and deformed by shrinkage after molding.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Specific examples of embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of an electrical junction box according to the present invention.
[0018]
The joint box (electric connection box) 10 includes a joint connector block 12 and a joint connector 25. Joint connector block 12 includes an insulating resins made case 13, the lower inside case 13 (FIGS. 1 and 2 vertically is shown in reverse) a plurality of longitudinally and transversely inserted from the terminal with The bus bars 23 and 24 (FIG. 3) and an insulating resin cover 22 that prevents the bus bars 23 and 24 from falling off are configured. The case 13 includes an upper connector fitting portion (not shown) having a plurality of connector fitting chambers in parallel and a lower bus bar accommodating portion 35 for accommodating the bus bars 23 and 24. The joint connector 25 is inserted into the connector fitting portion, and the female terminal to which the electric wire 33 is connected is connected to the tab terminals 23a and 24a of the bus bars 23 and 24.
[0019]
A joint circuit is formed by housing a plurality of bus bars 23, 24 in the bus bar housing portion 35 of the case 13, and an electric wire (wire harness) 33 is connected to the joint circuit via the joint connector 25 to thereby form an electric wire 33. As a result, the circuit configuration is diversified.
[0020]
Reinforcing structure of the joint box 10 according to the present invention includes a case 13 having a frame-like outer wall 1 4, and a bus bar accommodating portion 35 for accommodating the bus bars 23, 24 into the case 13, a recess (gap) 15 a reinforcing structure of the joint box 10 which is reinforced by both sides of the septal walls 3 5a and ribs 40, 41 of the outer wall 14 and the bus bar accommodating portion 35 of the bottom wall 15a case connected by 13 while being opposed to each other via A triangular rib reinforcing rib (rib) 40 connecting at least the bottom wall 15a of the recess 15 and the partition 35a, and a triangular outer wall reinforcing rib connecting at least the bottom wall 15a of the recess 15 and the outer wall 14 ( A plurality of ribs) 41 are provided. Further, the rib-shaped reinforcing ribs 40 and the ribs 41 for reinforcing the outer wall are arranged alternately along the partition walls 35a on both sides of the bus bar accommodating portion 35 and the outer wall 14 of the case 13. is there.
[0021]
According to such a configuration, the strength of the case 13 and the bus bar accommodating portion 35 is improved by the partition wall reinforcing rib 40 and the outer wall reinforcing rib 41, and the partition wall 35a and the outer wall 14 do not interact with each other. Deformation such as warping or falling due to contraction of the case is prevented, and the strength of the case 13 and the dimensional accuracy of the bus bar housing portion 35 are maintained and improved. When the dimensional accuracy is improved, the bus bars 23 and 24 are smoothly inserted, and the assembly of the bus bars 23 and 24 is improved. Further, since the ribs 40 and 41 are triangular, the base sides of the partition walls 35a on both sides of the bus bar accommodating portion 35 and the outer wall 14 of the case 13 are reinforced, and deformation is effectively prevented.
[0022]
Further, as in the second feature, when the rib reinforcing ribs 40 and the outer wall reinforcing ribs 41 are alternately arranged along the partition walls 35a on both sides of the bus bar accommodating portion 35 and the outer wall 14 of the case 13, The partition wall 35a or the outer wall 14 is reinforced with the same degree of balance and is prevented from being biased and deformed to either side.
[0023]
Below, the main structural part of the joint box 10 and its effect | action are demonstrated in detail.
For convenience of explanation in the present specification, the concepts of the front-rear direction, the left-right direction, and the up-down direction are defined as follows. The front-rear direction is defined as a direction in which the pair of brackets 20 and 20 are opposed to each other, the left-right direction is defined as the direction in which the female terminals accommodated in the joint connector 25 are arranged, and the up-down direction is the insertion direction of the joint connector 25. It will be determined. The upper side in the vertical direction is the side where the connector fitting portion is located, and the lower side is the side where the bus bar accommodating portion 35 is located (FIGS. 1 and 2 are shown upside down).
[0024]
The case 13 has a connector fitting portion in the upper half and a bus bar accommodating portion 35 in the lower half, back to back. The connector fitting portion has a plurality of slot-like connector fitting chambers for receiving the plate-like joint connector 25 in parallel. Each connector fitting chamber has an opening at the top. The joint connector 25 inserted into the connector fitting chamber is locked by the locking means and is prevented from coming off. In addition, the connector fitting part can be provided with a detachable cover (not shown) to reliably prevent the joint connector 25 from coming off. The locking means of the joint connector 25 and the cover 22 will be proposed in other applications, and detailed description thereof will be omitted.
[0025]
The bus bar accommodating portion 35 is formed inside the case 13 and has a vertical groove 35b defined by a plurality of partition walls 35a extending in the front-rear direction and a notch 35d formed in the plurality of partition walls 35a perpendicular to the vertical groove 35b. It is comprised from the horizontal groove 35c connected in the direction.
[0026]
The plate thickness of each partition wall 35a is formed to be about 1 mm in consideration of the dimensional accuracy of the bus bar accommodating portion 35 and the assemblability of the bus bars 23 and 24. The width of the vertical groove 35b formed between adjacent partition walls 35a is slightly narrower than the thickness of the vertical bus bar 23, and the vertical bus bar 23 (FIG. 3A) is formed by the partition walls 35a on both sides. It is supposed to be sandwiched. The groove width is arbitrary, but in this embodiment, it is formed to have a narrow width of about 1 mm. The vertical bus bar 23 is accommodated in the vertical groove 35b so that the band portion 23b of the vertical bus bar 23 is sandwiched between the partition walls 35a .
[0027]
The notch 35d is a slit formed on the upper end side of the partition wall 35a, and the horizontal groove 35c connecting the slit in the left-right direction is a communication groove that crosses the vertical groove 35b. The width of the slit is transverse bus bars 24 Ru be formed slightly narrower dimension than the thickness dimension of the (Figure 3 (b)). The horizontal bus bar 24 is accommodated in the horizontal groove 35c so that the band 24b of the horizontal bus bar 24 is sandwiched between the slits .
[0028]
Between the outer wall 14 of the case 13 and the partition walls 35a on both sides in the left-right direction, a bowl-shaped recess 15 is formed. The concave portion 15 is provided in order to improve the moldability of the partition wall 35a and improve the dimensional accuracy of the bus bar accommodating portion 35, and to increase the strength of the case 13 by forming the outer wall 14 outside the partition wall 35a. This is because the protrusion of the end portion of the horizontal bus bar 24 protruding from the partition walls 35 a on both sides is protected by the cover 22.
[0029]
Between the partition wall 35a and the outer wall 14, a triangular partition wall reinforcing rib 40 and a triangular outer wall reinforcing rib 41 are formed. The ribs 40 for reinforcing the partition walls are ribs that connect the bottom wall 15a of the recess 15, the partition walls 35a, and the base side of the outer wall 14, and the ribs 41 for reinforcing the outer wall are the bottom wall 15a, the outer wall 14, and the partition walls 35a of the recess 15. The ribs 40 for reinforcing the partition walls and the ribs 41 for reinforcing the outer wall are arranged alternately (alternately) along the outer wall 14. Although the number of ribs 40 and 41 is arbitrary, in the present embodiment, six outer wall reinforcing ribs 41 are provided on the outer wall 14 in order to improve the strength of the case 13. Three partition rib reinforcing ribs 40 are formed on the partition wall 35a.
[0030]
By forming the partition wall reinforcing rib 40 and the outer wall reinforcing rib 41 in a triangular shape, the partition wall 35a and the outer wall 14 are prevented from being deformed such as warping or falling due to interaction (interference). . In addition, since the plurality of rib reinforcing ribs 40 and the outer wall reinforcing ribs 41 are formed different from each other, the outer wall 14 that is a thick wall and the partition wall 35a that is a thin wall are reinforced in the same level with good balance. It is possible to prevent deformation by being biased to the side.
[0031]
The partition reinforcing rib 40 and the outer wall reinforcing rib 41 may be provided without being connected to the opposing partition 35 a and the outer wall 14. That is, the partition wall reinforcing rib 40 can be connected to the bottom wall 15 a and the partition wall 35 a of the recess 15, and the outer wall reinforcing rib 41 can be connected to the bottom wall 15 a and the outer wall 14 of the recess 15. When formed in this way, the outer wall 14 and the partition wall 35a are reinforced completely independently, and deformation due to the interaction of both wall portions can be prevented more reliably.
[0032]
Further, the present invention does not limit the rib reinforcing rib 40 and the outer wall reinforcing rib 41 to a triangular shape, and may be trapezoidal, curved or other shapes. In the case of the triangular shape as in the present embodiment, the base side of the outer wall 14 and the partition wall 35a is effectively reinforced, and the wall portion is effectively prevented from being deformed.
[0033]
A bracket 20 with a fixing hole is integrally formed at both ends of the case 13 in the front-rear direction, and the bracket 20 is fastened and fixed to a body panel or the like (not shown) by inserting a bolt (not shown) through the hole 20a. It has become.
[0034]
The cover 22 is formed in a box shape from the frame wall 22a and the bottom wall 22b, and an upper part is formed as an opening. The cover 22 is, after the bus bars 23, 24 is mounted on the busbar accommodating portion 35, is mounted to the busbar accommodating portion 35, it is intended to prevent inadvertent busbars 23,24. A pair of locking projections 14 a are formed on the outer walls 14 on both sides of the case 13, and engaging portions (not shown) are formed on the inner surface of the frame wall 22 a of the cover 22. When the cover 22 is mounted , the engaging portion engages with the locking projection 14 a so that the cover 22 can be attached to the case 13 without being detached.
[0035]
The joint connector 25 includes a small female terminal (not shown) that is connected to the tab terminals 23 a and 24 a of the bus bars 23 and 24, and a plate-like housing 26. The joint connector 25 and the electric wire 33 connected to the female terminal constitute a wire harness.
[0036]
The housing 26 is made of an insulating resin material, and is formed of a flat substrate 27, a partition wall 29 and a front wall 28 that stand up perpendicular to the substrate 27. The rear wall of the housing 26 and the upper wall facing the substrate are formed open. The width dimension of the substrate 27 is formed to a dimension corresponding to the width dimension of the connector fitting chamber of the case 13 so that no gap is generated. The depth of the board | substrate 27 is formed in the dimension in which the edge part of a female terminal and the electric wire 33 is accommodated.
[0037]
An elongated terminal accommodating chamber is formed between adjacent partition walls 29 of the housing 26. The accommodated female terminal has an electrical contact portion that abuts against the front wall 28 of the housing 26 so that it cannot be removed forward. Further, a protrusion (not shown) is formed in the terminal accommodating chamber, and the female terminal is locked so as not to be pulled out rearward.
[0038]
The female terminal is the same as a normal female terminal, and is formed by punching a conductive substrate with a press and bending it. A box-shaped electrical contact portion is formed on one side, and an electric wire connection portion is formed on the other side. Inside the electrical contact portion, an elastic contact piece is bent and formed so that the tab terminals 23a and 24a of the bus bars 23 and 24 are sandwiched. The electric wire connecting portion is composed of a pair of crimping pieces on the front and rear sides, and the core wire portion and the insulating coating portion of the electric wire 33 are crimped. In addition, it is good also considering a wire connection part as a pair of press contact piece.
[0039]
The vertical bus bar 23 shown in FIG. 3A is formed by punching and bending a conductive substrate, similarly to the joint bus bar 55 shown in the conventional example of FIG. The vertical bus bar 23 includes a band portion 23b, a plurality of tab terminals 23a protruding from one side of the band portion 23b, and a plurality of tuning fork-shaped pinching terminals 23c formed on the other side of the band portion 23b. Has been.
[0040]
Each tab terminal 23a is inserted into a terminal insertion hole (not shown) formed in the bottom of the bus bar accommodating portion 35, protrudes into the connector fitting chamber, and is connected to the female terminal of the joint connector 25. ing. Each clamping terminal 23c is a terminal in which a slit 23d is formed between a pair of clamping pieces. The band portion 24b of the horizontal bus bar 24 intersects and is sandwiched between the slits 23d.
[0041]
The horizontal bus bar 24 shown in FIG. 3 (b) is formed by punching and bending a conductive substrate in the same manner as the vertical bus bar 23. The horizontal bus bar 24 protrudes from one side of the belt part 24b and the belt part 24b. Tab terminal 24a. A plurality of small-diameter holes 24c are formed in the band portion 24b. However, the holes 24c are formed in manufacturing and have no meaning. Similarly to the tab terminal 23a of the vertical bus bar 23, the tab terminal 24a is inserted into the terminal insertion hole of the bus bar accommodating portion 35, protrudes into the connector fitting chamber, and is connected to the female terminal of the joint connector 25. It has become. In addition, about the circuit structure of the vertical bus bar 43 and the horizontal bus bar 44 which form a joint circuit, it is due to propose in another application, and detailed description in this specification is abbreviate | omitted.
[0042]
Note that the interval between the adjacent rib reinforcing ribs 40 and the outer wall reinforcing ribs 41 is arbitrary, and is not limited to being formed at equal intervals as in the present embodiment, and is expected to have the largest amount of deformation. You may form densely in a location. For example, the interval between the adjacent partition wall reinforcing ribs 40 and the outer wall reinforcing ribs 410 is narrowed at a substantially middle portion in the longitudinal direction of the partition walls 35a and the outer wall 14 on both sides, and the adjacent partition wall reinforcing ribs 40 and the outer wall are narrowed on the end side. You may form so that the space | interval of the rib 41 for reinforcement may be expanded.
[0043]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
[0044]
【The invention's effect】
As described above, according to the invention described in claim 1, the circuit configuration can be diversified, a complicated joint circuit can be formed, and the electrical junction box that can flexibly cope with the change of the vehicle type and the like. The partition walls on both sides of the plurality of partition walls and the outer wall of the case are opposed to each other through a gap and are connected by the bottom wall, and a plurality of ribs for connecting the bottom wall and the outer wall and a plurality of ribs for connecting the bottom wall and the partition wall are provided. Therefore, the partition walls on both sides of the plurality of partition walls are opposed to the outer wall through a gap and are connected and reinforced by the bottom wall, and the outer wall connected to the bottom wall and the injection molding of the partition walls on both sides The warp caused by the subsequent contraction is reinforced by the ribs and prevented . Therefore, the strength of the partition walls on both sides of the plurality of partition walls of the bus bar housing portion can be improved, and the dimensional accuracy of the outer wall of the case after molding and the bus bar housing portion can be maintained and improved . In addition, by maintaining and improving the dimensional accuracy of the bus bar housing portion, the terminal connection between the tab terminal of the bus bar and the terminal of the connector is reliably performed, and the reliability of the terminal connection is improved .
[0045]
Further, since Li blanking is triangular, is reinforced base side on both sides of the partition walls of the outer wall and the bus bar accommodating portion, effectively of both wall deformation is prevented.
[0046]
Further, the ribs of triangular shape, because they are arranged alternately along the both sides of the partition walls of the outer wall and the bus bar accommodating portion, and both sides of the partition walls of the outer wall and the bus bar accommodating portion is reinforced to the same extent good balance, after the molding It is possible to prevent the wall from being biased and deformed due to the contraction. Therefore, Ru effect is obtained dimensional accuracy of the molded body is more on further improvement.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of an electrical junction box according to the present invention.
FIG. 2 is a perspective view of the joint connector block shown in FIG.
3 is a perspective view of the bus bar shown in FIG. 1, wherein (a) is a vertical bus bar and (b) is a horizontal bus bar. FIG.
FIG. 4 is a perspective view showing an example of a conventional electrical junction box.
[Explanation of symbols]
10 Joint box (electric junction box)
12 joint connector block 14 outer wall <br/> 15 recess 23 vertical bus bar 23a tab terminals 24 horizontal bus bar 24a tab terminal 25 joint connector 26 housing 35 busbar accommodating portion 35a septal wall <br/> 40 partition wall reinforcing rib (rib )
41 Outer wall reinforcing ribs (ribs)

Claims (1)

A plurality of connector fitting chambers for receiving joint connectors have a connector fitting portion formed on one side and a bus bar housing portion formed on the inner side, and a frame-like outer wall. A case made of insulating resin having injection molding, and a plurality of vertical bus bars and a plurality of horizontal bus bars with tab terminals inserted so as to intersect in the bus bar housing portion, and the bus bar housing portion is in one direction A plurality of vertical grooves defined between the partition walls adjacent to each other, and a horizontal groove in which a notch formed in the plurality of partition walls communicates in a direction perpendicular to the vertical grooves. The vertical bus bar and the horizontal bus bar respectively accommodated in the groove and the horizontal groove form a joint circuit, and the tab terminals of the vertical bus bar and the horizontal bus bar are connected to the bus. -The terminal of the joint connector is inserted into the connector fitting chamber through the terminal insertion hole formed in the bottom of the housing portion, and the female terminal of the joint connector inserted into the connector fitting chamber is terminal-connected to the tab terminal. In the electrical junction box in which the electric wire connected to the female terminal of the joint connector is connected to the joint circuit, the partition walls on both sides of the plurality of partition walls and the outer wall of the case are opposed to each other through a gap, and the bottom wall A reinforcement structure connected by
Alternately arranging said substantially triangular rib bottom wall and connecting said outer wall, and a substantially triangular ribs connecting said bottom wall and said partition walls along the sides of the partition wall of the busbar accommodating portion and the outer wall And a plurality of the reinforcing structures for the electrical junction box.

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