JP3377886B2 - Electrical junction box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box in which a connector housing is fitted in a housing fitting portion of a connection box body in which a bus bar having an L-type terminal portion is assembled.

[0002]

2. Description of the Related Art FIG. 23 shows an electric junction box 1 described in Japanese Patent Laid-Open No. 5-54787. The electrical connection box 1 includes a connection box body 3 in which a plurality of terminal accommodating chambers 2 are formed, a bus bar 4 assembled in the connection box body 3 to form a branch circuit, and a bus bar pressing plate 5.

A housing fitting portion 6 is formed in the central portion of the connection box body 3. As shown in FIG. 24, a connector housing 7 formed integrally with an intermediate portion of the bus bar pressing plate 5 is fitted into the housing fitting portion 6. A locking projection 8 is provided on the outer periphery of the connector housing 7, and when fitted in the housing fitting portion 6, it engages with the locking projection 9 in the housing fitting portion 6. . A mating connector connected to the end of the electric wire is fitted into the connector housing 7 to electrically connect the bus bar 4 and the electric wire.

In addition, the housing fitting portion 6 accommodates an L-shaped terminal portion 10 formed integrally with the bus bar 4. The L-shaped terminal portion 10 is provided with a hood portion 12 of the connector housing 7 from the terminal insertion port 11 of the connector housing 7.
It projects inside.

Then, the bus bar 4 is first attached to the junction box body 3.
The L-shaped terminal portion 10 is housed in the housing fitting portion 6 by assembling. Next, the bus bar pressing plate 5 is assembled from below the connection box body 3, and the connector housing 7
Is fitted into the housing fitting portion 6 to engage the locking protrusions 8 and 9. At this time, the L-shaped terminal portion 10 is provided so as to project from the terminal insertion port 11 into the hood portion 12 of the connector housing 7.

However, in this electric junction box 1, the L-shaped terminal portion 10 previously housed in the housing fitting portion 6 is provided.
When aligning with the terminal insertion opening 11 of the connector housing 7, the housing fitting portion 6 is inside the connection box body 3 and therefore cannot be seen from the outside. Therefore, the L-shaped terminal portion 10 is inserted into the terminal insertion opening 11. Is very difficult and the workability is poor.

Even if the L-shaped terminal portion 10 is inserted into the hood portion 12 from the terminal insertion opening 11, as shown in FIG. 24, since the L-shaped terminal portion 10 receives a small portion 7a,
It is difficult to maintain the squareness of the L-type terminal 10.

Therefore, FIGS. 25 and 26 (a), (b)
It is conceivable that the connector housing 14 is integrally formed on the side of the connection box body 13 and the L-shaped terminal portion 10 of the bus bar 4 is housed in the connector housing 14 as shown in FIG. With this configuration, the troublesome work of aligning the L-shaped terminal portion 10 with the terminal insertion opening 11 of the connector housing 14 is unnecessary, and the workability is improved.

[0009]

However, in the structure in which the L-shaped terminal portion 10 is housed in the connector housing 14 provided in the connection box body 13, a connecting portion for connecting the L-shaped terminal portion 10 and other portions (see FIG. A cutout 16 must be provided in the connector housing 14 for the passage of 15). For this reason, since the portion supporting the L-shaped terminal portion 10 does not exist in the connector housing 14, the rattling of the L-shaped terminal portion 10 becomes large, and it becomes difficult to maintain the squareness of the L-shaped terminal portion 10. With the L-shaped terminal portion 10 inclined,
When mated with the mating connector 17, there is a problem in that the reliability of the connection is reduced.

Further, when an external force is applied to the electric wire 18 drawn out from the mating connector 17, the connector housing 14
Since the notch 16 is provided in the connector housing 17, the mating connector 17 rattles against the connector housing 14 and is easily twisted.

Therefore, according to the present invention, in the electrical connection box in which the connector housing is fitted to the housing fitting portion of the connection box body in which the bus bar having the L-shaped terminal portion is assembled, the perpendicularity of the L-shaped terminal portion of the bus bar is provided. It is an object of the present invention to provide an electrical connection box that can maintain the slack, suppress the rattling of the connector housing with respect to the housing fitting portion, and further suppress the rattling of the L-shaped terminal portion. .

[0012]

To achieve the above object, the invention according to claim 1 is characterized in that a connector housing is fitted into a housing fitting portion of a connection box body, and the connector housing is assembled in the connection box body and branched. An L-shaped terminal portion of a bus bar forming a circuit is an electrical junction box projecting from a terminal insertion opening in a hood portion of the connector housing, the opening edge portion of the terminal insertion opening, and the outer surface of the L-shaped terminal. It is characterized in that a terminal enclosure support portion that abuts and supports is provided.

The invention according to claim 2 is the invention according to claim 1, wherein the terminal enclosure support portion is an outer wall portion extending outward from an opening edge portion of the terminal insertion opening, and the terminal. It is characterized in that an opening edge portion of the insertion port is composed of an inner wall portion extending toward the hood portion side and an inner wall of the terminal insertion port.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the connector housing is
A guide support groove portion is provided along a fitting direction of the fitting portion, and a guide portion that is inserted into the guide support groove portion is provided in the housing fitting portion.

The invention according to claim 4 is the invention according to claim 3, wherein the groove-side projections projectingly provided on the inner wall of the guide-supporting groove portion and the groove-side projections provided on the guide portion are engaged with each other. It is characterized in that it has a locking means composed of a projection on the guide portion side for fixing the connector housing to the housing fitting portion.

The invention according to claim 5 is the invention according to claim 4, wherein the L is in a locked state by the locking means.
It is characterized in that it has a projecting portion for sandwiching the mold terminal portion with the inner wall of the housing fitting portion, and a stopper portion that comes into contact with the guide portion in a locked state.

The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the fitting state of the connector housing to the housing fitting portion can be confirmed. It is characterized by having a confirmation means.

The invention according to claim 7 is the invention according to claim 6, wherein the fitting confirmation means is provided on the protruding wall portion provided on the connector housing and the connection box body, and the housing is provided. It is composed of a fitting hole into which the protruding wall portion is inserted when the connector housing is fitted into the fitting portion, and a fitting confirmation window capable of confirming the insertion position of the protruding wall portion into the fitting hole. It has a feature.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the bus bar is connected when the connector housing is fitted to the housing fitting portion. It is characterized in that the connector housing is provided with a bus bar cover portion which is sandwiched between the bus body and the box body.

[0020]

According to the first aspect of the present invention, the bus bar is assembled to the main body of the connection box, and the L-shaped terminal portion of the bus bar is housed in the housing fitting portion. Next, the connector housing is fitted into the housing fitting portion, and the L-shaped terminal portion is projected from the terminal insertion port into the hood portion of the connector housing. In this state, the L-shaped terminal portion projecting in the hood has its outer surface abutted and supported by the terminal surrounding support portion, so rattling with respect to the connector housing is suppressed and the squareness is maintained.

According to the invention of claim 2, the outer surface of the L-shaped terminal portion projectingly provided in the hood portion is supported by the outer wall portion, the inner wall of the terminal insertion opening, and the inner wall portion, so that the connector housing is formed. Rattling with respect to is suppressed, and the squareness is maintained.

According to the invention of claim 3, in order to fit the connector housing to the housing fitting portion of the connection box body,
The guide portion of the connector housing is inserted into the guide support groove portion of the connector housing to fit the connector housing into the housing fitting portion. Thereby, the connector housing is easily inserted into the housing fitting portion.

According to the invention of claim 4, when the connector housing is finally fitted into the housing fitting portion, the groove-shaped projection and the guide portion-side projection are engaged with each other to be in a locked state.
The connector housing is fixed to the housing fitting portion.

According to the fifth aspect of the invention, when the connector housing is fitted in the housing fitting portion and locked by the locking means, the protrusion forms the L-shaped terminal portion with the inner wall of the housing fitting portion. It is clamped, and the guide portion and the stopper portion come into contact with each other. As a result, rattling of the L-shaped terminal portion with respect to the housing fitting portion is suppressed, and rattling of the connector housing with respect to the housing fitting portion in the fitting direction is also suppressed.

According to the invention of claim 6, the fitting confirmation means confirms the fitting state of the connector housing to the housing fitting portion.

According to the invention of claim 7, when the connector housing is inserted into the housing fitting portion, the protruding wall portion is inserted into the fitting hole, and the insertion position can be confirmed from the fitting confirmation window. . Therefore, by confirming from the fitting confirmation window whether or not the protruding wall portion has been inserted up to the predetermined insertion position in the fitting hole, whether or not the connector housing is completely fitted to the housing fitting portion. Can be confirmed.

According to the invention of claim 8, when the connector housing is completely fitted in the housing fitting portion,
The busbar, which has the busbar cover portion assembled to the connection box body, is sandwiched between the busbar body and the connection box body.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric junction box according to the present invention will be described below with reference to the drawings.

First Embodiment FIGS. 1 to 3 show an embodiment of an electric junction box according to the present invention. In these drawings, the electrical junction box 20 is mounted on a junction box body 21, a bus bar 22 assembled to the junction box body 21 to form a branch circuit, and a housing fitting portion 23 of the junction box body 21 and attached to the other side. It is composed of a connector housing 24 fitted with the connector.

The connection box body 21 has an electric component mounting portion 25 in which electric components such as relays and fuses are mounted, a bus bar mounting groove 26 in which the bus bar 22 is mounted, and a housing fitting portion 23 in which the connector housing 24 is mounted. Are formed.

As shown in FIGS. 1A, 4 and 5, the housing fitting portion 23 is opened downward and the upper side is closed by the upper wall 27. Inside the upper wall 27, a bus bar support convex portion 28 is provided so as to project toward the bus bar mounting groove 26 side. Further, a housing support protrusion 51 is provided at a predetermined distance from the bus bar support protrusion 28. Further, the guide portions 29, 29 are spaced apart from the upper wall 27 by a predetermined distance.
Is projected. These guide parts 29 are provided with guide part side projections 30 on their opposing surfaces facing each other. The busbar 22 is mounted in the busbar mounting groove 26 from between the guide portion 29 of the housing supporting convex portion 51 and the side wall 30 of the connection box body 21 among these guide portions 29, 29.

The bus bar 22 comprises a plate-shaped main body 32, a terminal portion 33 mounted in the electric component mounting portion 25, and an L-shaped terminal portion 34 bent and formed in an L shape. When the bus bar 22 is mounted in the bus bar mounting groove 26, the L-shaped terminal portion 34 is housed in the housing fitting portion 23 so that the root portion 34a contacts the bus bar supporting convex portion 28, and
It is sandwiched between the protrusion 35 of the connector housing 24.

The connector housing 24 is of a box type having one opening, and has a hood portion 36 formed therein. Further, the hood portion 3 is provided on the upper surface side of the connector housing 24.
A slit-shaped terminal insertion port 37 that communicates 6 with the outside is opened. The L-shaped terminal portion 34 accommodated in the housing fitting portion 23 is inserted into the terminal insertion opening 37. The L-shaped terminal portion 3 is provided at the opening edge portion of the terminal insertion opening 37.
A terminal enclosing support portion 38 is formed so as to contact and support the outer surface of the terminal 4.

The terminal enclosure support 38 is shown in FIG. 6, FIG. 7 and FIG.
As shown in FIG. 5, an outer wall portion 39 extending outward from an opening edge portion of the terminal insertion opening 37, and an inner sidewall portion 40 having an opening edge portion of the terminal insertion opening 37 extending toward the hood portion 36, It is composed of the inner wall 41 of the terminal insertion port 37. On the outer wall portion 39, an inclined surface 42 with an upwardly inclined terminal is formed all over the inner circumference. In the vicinity of the terminal enclosure support 38,
The above-mentioned protrusion 35 is formed.

Both side walls 4 of the connector housing 24
Guide support groove portions 44, 44 are formed in the connectors 3, 43 along the fitting direction of the connector housing 24, respectively. The guide support groove portions 44, 44 are formed in a convex shape in cross section by an insertion portion 45 into which the guide portion 29 is inserted and an opening portion 46. Further, in the guide support groove portion 44, the groove side protrusion 4
7 is projectingly provided on the insertion portion 45 side. This groove side protrusion 47
Composes locking means with the guide portion side protrusion 30 of the guide portion 29, and these groove side protrusion 47 and guide portion side protrusion 30 are provided.
The connector housing 24 is fixed to the housing fitting portion 23 by engaging with. The lower portion of the insertion portion 45 is closed by a stopper 48. This stopper 4
8 is a connector housing 24 in the housing fitting portion 23.
Is engaged, the lower end stopper 50 of the guide portion 29
Abut.

Next, a procedure for assembling the bus bar 22 and the connector housing 24 to the connection box body 21 will be described. First, the bus bar 22 is inserted into the bus bar mounting groove 26, and the L-shaped terminal portion 34 is inserted into the housing fitting portion 23. Then, the protrusion 49 provided on the bus bar 22 is engaged with the locking hole (not shown) provided on the connection box body 21. At this time, the root portion 34a of the L-shaped terminal portion 34 has a structure shown in FIG.
As shown in, the bus bar support convex portion 28 abuts. Next, the connector housing 24 is inserted into the housing fitting portion 23.

In this case, the guide parts 29, 29 are inserted into the insertion parts 45, 45 of the guide support groove parts 44, 44, and the connector housing 24 is inserted into the housing fitting part 23. When the connector housing 24 is inserted into the housing fitting portion 23, the L-shaped terminal portion 34 is inserted into the terminal insertion opening 37 as shown in FIGS.
Supported by 8. Then, the connector housing 24 abuts on the housing supporting convex portion 51, and the guide side projection 30 and the groove side projection 47 engage with each other, so that the connector housing 2
4 is fixed to the housing fitting portion 23. In this state, the protrusion 35 abuts on the root portion 34a of the L-shaped terminal portion 34, and the L-shaped terminal portion 34 is sandwiched between the bus-bar support convex portion 28 and the L-shaped terminal portion 34. 38
The rattling of the L-shaped terminal portion 34 with respect to the connector housing is suppressed and the squareness is maintained. Further, the stopper 48 has a lower end stopper 50 of the guide portion 29.
Abut. As a result, rattling of the connector housing 24 with respect to the housing fitting portion 23 is suppressed.

According to this embodiment, the terminal enclosing support portion 38 is provided at the opening edge portion of the terminal insertion opening 37 through which the L-shaped terminal portion 34 is inserted.
By providing the L-shaped terminal portion 34, the terminal insertion opening 37
It is possible to suppress rattling inside and maintain the squareness of the L-shaped terminal portion 34.

That is, as shown in FIGS. 7 and 8, L
There is a slight clearance between the mold terminal portion 34 and the terminal insertion port 37, and rattling occurs in the L-shaped terminal portion 34 within this range. This rattling is the upper point 3 of the terminal insertion port 37.
7a, the lower point 37b, and the closer the distance to the upper point 37a and the lower point 37b, the greater the rattling and the greater the change in the squareness of the L-shaped terminal portion 34.

Here, when the terminal enclosing support portion 38 is not provided at the opening edge portion of the terminal insertion opening 37, as shown in FIG. 10, the upper point 37c and the lower point 37d of the terminal insertion opening 37 are formed.
Since the distance between is short, there is a lot of rattling. For example, the rattling of the L-shaped terminal portion 34 is 3.3 ° at the maximum, whereas
In the case of the present embodiment, by providing the terminal enclosing support portion 38 in the terminal insertion opening 37 to raise the position of the upper point 37a, the rattling of the L-shaped terminal portion 34 becomes 1.4 ° at the maximum.
Rattling is suppressed.

Further, as shown in FIG. 9, when the terminal enclosure support portion 38 is not provided, the squareness of the L-shaped terminal portion 34 is 94 ° at the maximum, and it is very difficult to maintain the squareness. On the other hand, according to this embodiment, as shown in FIG.
It is 1 degree, and the deviation of the squareness can be minimized.

Further, according to this embodiment, when the connector housing 24 is fitted into the housing fitting portion 23,
By providing the guide portion 29 and the guide support groove portion 44, the guide portion 2
By inserting 9 into the guide support groove portion 44 and fitting them, the connector housing 24 is guided in the proper fitting direction, so that the fitting workability is improved and the terminal insertion opening 3
The positioning of the L-shaped terminal portion 34 in the inside 7 becomes easy.

Further, by inserting the guide portion 29 into the guide support groove portion 44, it is possible to suppress the rattling of the connector housing 24 with respect to the housing fitting portion 23. Further, the connector housing 24 can be securely fixed in the housing fitting portion 23 by engaging the guide portion side projection 30 and the groove side projection 47.

Further, in a state where the connector housing 24 is fixed to the housing fitting portion 23, the L-shaped terminal portion 34 is sandwiched between the bus bar supporting protrusion 28 and the protrusion 35,
Since the lower end stopper 50 and the stopper 48 of the guide portion are in contact with each other, the vertical rattling of the housing fitting portion 23 of the L-shaped terminal portion 34 is suppressed, and the connector housing 24 relative to the housing fitting portion. The rattling in the vertical direction is also suppressed.

Second Embodiment Next, a second embodiment will be described. 11 to 13 are perspective views in which a part of the electric junction box 52 of this embodiment is cut away. The electrical connection box 52 of the present embodiment has the same basic configuration as that of the first embodiment described above, but a fitting confirmation means capable of confirming the fitted state of the connector housing 53 to the housing fitting portion 23. 54.

As shown in FIGS. 11 to 13, the electric junction box 52 of this embodiment is assembled to the junction box main body 55 and the junction box main body 21 like the electric junction box 20 of the first embodiment. The bus bar 22 forms a branch circuit, and the connector housing 53 is fitted to the housing fitting portion 23 of the connection box body 21 and fitted to the mating connector.

The connection box main body 55 has basically the same structure as the connection box main body 55 of the first embodiment, except that the upper wall 27 is different.
A fitting hole 56 is formed in the opening, and a fitting confirmation window 57 that opens upward is formed.

Since the bus bar 22 assembled to the junction box body 55 has the same structure as that of the first embodiment, its explanation is omitted here.

The connector housing 53, like the connector housing 21 of the first embodiment, has a terminal insertion port 37.
A terminal enclosing support portion 38 is formed on the opening edge portion of the above, and a protrusion 35 is formed in the vicinity of the terminal enclosing support portion 38.
Further, a guide support groove portion 44 is formed along the fitting direction of the connector housing 53 to the housing fitting portion 23. Then, when the connector housing 53 is fitted in the housing fitting portion 23, the guide portion 29 provided in the housing fitting portion 23 is fitted. A guide-side protrusion 30 is formed on the guide portion 29, and a groove-side protrusion 47 is formed on the guide support groove portion 44.

A protruding wall portion 58 is provided so as to project from the upper surface of the connector housing 53. This protruding wall portion 58
The fitting hole 56 and the fitting confirmation window 57 constitute a fitting confirmation means 54. The protruding wall portion 58 has a rectangular cross section, and when the connector housing 53 is fitted into the housing fitting portion 23, the protruding wall portion 58 is fitted into the fitting hole 56 formed in the connection box body 55. As shown in FIGS. 12 and 14, when the connector housing 53 is completely fitted to the housing fitting portion 23, that is, when the guide portion side projection 30 and the groove side projection 47 are engaged, the protrusion The upper surface 58a of the wall 58 is flush with the upper wall 27 of the junction box body 55. Further, when the connector housing 53 is half-fitted to the housing fitting portion 23, the protruding wall portion 58 is inserted only part way into the fitting hole 56, and the upper surface of the protruding wall portion 58 of the connection box body 55. It is not flush with the top surface.

Next, the procedure for assembling the bus bar 22 and the connector housing 53 to the junction box body 55 of this embodiment will be described. First, insert the bus bar 22 into the bus bar mounting groove 2
6 and inserts the L-shaped terminal portion 34 into the housing fitting portion 23.
To insert. Next, the connector housing 53 is inserted into the housing fitting portion 23. When the connector housing 53 is inserted into the housing fitting portion 23, the L-shaped terminal portion 34
Is inserted into the terminal insertion opening 37 and supported by the terminal enclosure 38. Then, the guide-side projection 30 and the groove-side projection 47 are engaged with each other so that the connector housing 53 becomes the housing fitting portion 2.
It is fixed at 3. In this state, the protrusion 35 abuts on the root portion 34a of the L-shaped terminal portion 34, and the bus bar support protrusion 28
The L-shaped terminal portion 34 is sandwiched between and, and the L-shaped terminal portion 34 is supported by the terminal surrounding support portion 38 to maintain the squareness. Further, the lower end stopper 50 of the guide portion 29 contacts the stopper 48.

At this time, visually checking the fitting confirmation window 57,
As shown in FIG. 14, if the upper surface 58a of the protruding wall portion 58 is flush with the upper wall 27 of the connection box body 55, it means that the connector housing 53 is completely fitted in the housing fitting portion 23. Can be confirmed. Further, as shown in FIG. 15, when the surfaces are not flush with each other, it can be confirmed that the connector housing 53 is half-fitted to the housing fitting portion 23.

According to this embodiment, in addition to the same effect as the first embodiment, the fitting confirmation means 54 is provided, so that the fitting state of the connector housing 53 to the housing fitting portion 23 is achieved. Therefore, the connector housing 53 can be securely fitted into the housing fitting portion 23.

Third Embodiment Next, an electric junction box 59 of a third embodiment will be described with reference to FIGS. 16 to 18. The electrical junction box 59 of this embodiment
Is an example in which the bus bar cover portion 83 is formed on the connector housing 63.

As shown in FIGS. 16 to 18, the electric connection box 59 includes a connection box main body 60, a bus bar 61 assembled to the connection box main body 60 to form a branch circuit, and a housing fitting of the connection box main body 60. The connector housing 63 is attached to the mating portion 62 and fitted with the mating connector.

The junction box main body 60 is formed with a bus bar mounting groove 64 into which the bus bar 61 is assembled and a housing fitting portion 62 into which the connector housing 63 is mounted. The housing fitting portion 62 is opened downward, and the upper side is closed by an upper wall 65. Inside the upper wall 65, a bus bar support convex portion 66 is provided so as to project toward the bus bar mounting groove 64 side. A terminal accommodating chamber 67 is formed adjacent to the housing fitting portion 62. This terminal accommodating chamber 67
A flexible locking arm 68 is projectingly provided therein. And
The flexible locking arm 68 engages with the locking projection 69a of the bus bar 61 housed in the terminal housing chamber 67, so that the terminal housing chamber 67
The terminal portion 69 is prevented from coming off from the inside, and the bus bar 61 is prevented from coming off from the bus bar mounting groove 64.

Further, in the connection box body 60, a fitting hole 70 is formed in the upper wall 65, and a fitting confirmation window 71 opened upward is formed.

The bus bar 61 comprises a plate-shaped main body 72, a terminal portion 69, and an L-shaped terminal portion 73 bent and formed in an L shape. When the bus bar 61 is mounted in the bus bar mounting groove 64, the L-shaped terminal portion 73 is attached to the housing fitting portion 62.
It is housed inside and abuts on the bus bar supporting protrusion 66, and is sandwiched between the bus bar supporting protrusion 66 and the protrusion 74 of the connector housing 63.

The connector housing 63 is shown in FIGS.
As shown in 0, a hood portion 75 is formed inside in a box shape with one opening. In addition, the connector housing 6
A slit-shaped terminal insertion port 76 that communicates the hood portion 75 and the outside is opened on the upper surface side of 3. The L-shaped terminal portion 73 housed in the housing fitting portion 62 is inserted into the terminal insertion opening 76. At the edge of the opening of the terminal insertion opening 76, a terminal enclosing support portion 77 that abuts and supports the outer surface of the L-shaped terminal portion 73 is formed. A protrusion 74 is formed near the terminal enclosure support 77. Terminal enclosure supporting portion 77 on SL first, since the terminal enclosure supporting portion 38 of the second embodiment of the structure omitted.

Guide support grooves 78, 78 are formed on both side walls of the connector housing 63 along the fitting direction of the connector housing 63. The guide support groove portions 78, 78 are formed in a convex shape in cross section by an insertion portion 79 into which a guide portion (not shown) is inserted and an opening portion 80. In addition, a groove side protrusion 81 is provided on the guide support groove portion 78 so as to protrude toward the insertion portion 79 side. The groove side projection 81 constitutes a locking means together with the guide portion side projection (not shown) of the guide portion, and the connector housing 63 is fitted into the housing by the engagement of the groove side projection 81 and the guide portion side projection. It is fixed to the joint 62. The lower portion of the insertion portion 79 is closed by a stopper 82. The stopper 82 contacts the lower end of the guide portion when the connector housing 63 is fitted in the housing fitting portion 62.

A projecting wall portion 87 is provided so as to project from the upper surface of the connector housing 63. This protruding wall portion 87
Is a connector housing 63 to the housing fitting portion 62.
Is inserted into the fitting hole 70 at the time of fitting. Then, the fitting state can be confirmed by visually checking the upper surface 87a of the protruding wall portion 87 with the fitting confirmation window 71.

A bus bar cover portion 83 is formed on one side of the connector housing 63. The bus bar cover portion 83 includes frame portions 84, 84 extending from both side walls.
And a connecting frame portion 85 for connecting between the frame portions 84, 84.
And the inner side surface of the connecting frame portion 85 serves as a pressing surface 86. Then, as shown in FIGS. 19 and 20, when the connector housing 63 is fitted in the housing fitting portion 62, the pressing surface 86 contacts the lower end portion 61 a of the bus bar 61.

Next, a procedure for assembling the bus bar 61 and the connector housing 63 to the connection box body 60 will be described. First, the bus bar 61 is inserted into the bus bar mounting groove 64, and the L-shaped terminal portion 73 is inserted into the housing fitting portion 62. Then, the locking protrusion 69a and the flexible locking arm 68 are engaged. At this time, the root portion 73a of the L-shaped terminal portion 73
As shown in FIG. 21, the bus bar support convex portion 66 abuts on the. Next, the connector housing 63 is inserted into the housing fitting portion 62.

In this case, the guide portion is connected to the guide support groove portion 78,
The connector housing 63 is inserted into the insertion portions 79 and 79 of the connector 78, and the connector housing 63 is inserted into the housing fitting portion 62. When the connector housing 63 is inserted into the housing fitting portion 62, the L-shaped terminal portion 73 is inserted into the terminal insertion opening 76, as shown in FIGS.
Supported by 7. Then, the guide side protrusion and the groove side protrusion 81
Engage with each other and the connector housing 63 is fixed to the housing fitting portion 62. In this state, the protrusion 74 abuts on the root portion 73a of the L-type terminal portion 73, and the L-type terminal portion 73 is sandwiched between the busbar supporting protrusion 66 and the L-type terminal portion 73. The squareness is maintained by being supported by 77. Further, the lower end stopper of the guide portion comes into contact with the stopper 82.

At this time, by visually checking the fitting confirmation window 71,
The upper surface 87a of the protruding wall portion 87 is the upper wall 65 of the junction box body 60.
If they are flush with each other, it can be confirmed that the connector housing 60 is completely fitted in the housing fitting portion 62. Also, if they are not flush,
It can be confirmed that the connector housing 63 is half-fitted into the housing fitting portion 62.

When the connector housing 63 is completely fitted to the housing fitting portion 62, the pressing surface 86 of the busbar cover portion 83 abuts on the lower end portion 61a of the busbar 61 to connect the busbar 61. Rattling of the box body 60 is suppressed.

According to the present embodiment, in addition to the same effects as those of the first and the first embodiments, the bus bar cover portion 83 is provided to suppress rattling of the bus bar 61 with respect to the junction box body 60. You can do it.

[0068]

As described above, according to the first aspect of the present invention, the terminal enclosing support portion for contacting and supporting the outer surface of the L-shaped terminal is provided at the opening edge portion of the terminal insertion opening.
Since rattling of the L-shaped terminal portion with respect to the terminal insertion opening can be suppressed, the squareness of the L-shaped terminal portion can be maintained.

According to the second aspect of the present invention, the outer surface of the L-shaped terminal portion projectingly provided in the hood portion is supported by the outer wall portion, the inner wall of the terminal insertion opening, and the inner wall portion. Since it is supported in a wide area, rattling of the L-shaped terminal portion with respect to the terminal insertion opening is suppressed. Therefore, the squareness of the L-shaped terminal portion is maintained.

According to the third aspect of the present invention, the connector housing is provided with the guide support groove portion along the fitting direction to the fitting portion, and the housing fitting portion is provided with the guide portion to be inserted into the guide support groove portion. As a result, when fitting the connector housing to the housing fitting portion, operations such as positioning are unnecessary, and fitting workability can be improved.

According to the fourth aspect of the invention, by providing the locking means composed of the groove side protrusion and the guide portion side protrusion,
The connector housing can be securely fixed to the housing fitting portion.

According to the fifth aspect of the present invention, there are provided a protrusion that holds the L-shaped terminal portion between the L-shaped terminal portion and the inner wall of the housing fitting portion when locked by the locking means, and a stopper portion that abuts the guide portion when locked. By having it, it is possible to suppress the rattling of the L-shaped terminal portion with respect to the housing fitting portion, and to suppress the rattling of the connector housing with respect to the housing fitting portion.

According to the sixth aspect of the present invention, the connector housing is surely fitted into the housing fitting portion by having the fitting confirmation means capable of confirming the fitting state of the connector housing into the housing fitting portion. You can

According to the invention of claim 7, the fitting state of the connector housing to the housing fitting portion can be easily checked by checking the insertion position of the protruding wall portion from the fitting confirmation window. You can check.

According to the eighth aspect of the present invention, since the bus bar covering portion is provided on the connector housing, the bus bar can be assembled to the main body of the connection box without rattling.

[Brief description of drawings]

FIG. 1 shows a first embodiment of an electrical junction box according to the present invention,
(A) is an exploded perspective view and (b) is a sectional view showing the assembled state.

FIG. 2 is a perspective view showing a state in which an L-shaped terminal portion is accommodated in a housing fitting portion in the electric connection box of the first embodiment.

FIG. 3 is a perspective view showing a state where the L-shaped terminal portion and the connector housing are fitted to the housing fitting portion in the electric connection box of the first embodiment.

FIG. 4 is a cross-sectional view showing a state before the connector housing is inserted into the housing fitting portion in the electric connection box of the first embodiment.

FIG. 5 is a cross-sectional view showing a state in which a connector housing is inserted and fitted in a housing fitting portion in the electrical junction box of the first embodiment.

FIG. 6 is a plan view showing a terminal insertion port in the electric junction box of the first embodiment.

FIG. 7 shows the VI of FIG. 6 in the electrical junction box of the first embodiment.
It is a sectional view taken along a I-VII line.

FIG. 8 shows the VI of FIG. 6 in the electrical junction box of the first embodiment.
It is sectional drawing cut | disconnected along the II-VIII line.

FIG. 9 is a cross-sectional view showing a relationship between a conventional L-shaped terminal portion and a terminal insertion port.

FIG. 10 is a cross-sectional view showing a relationship between a conventional L-shaped terminal portion and a terminal insertion port.

FIG. 11 is an exploded perspective view showing an electric junction box of a second embodiment.

FIG. 12 is a perspective view showing a state in which a connector housing is completely fitted in a housing fitting portion in the electric connection box of the second embodiment.

FIG. 13 is a perspective view showing a state in which the connector housing is inserted into the housing fitting portion in a semi-fitted state in the electrical junction box of the second embodiment.

FIG. 14 is a cross-sectional view showing a state in which a connector housing is completely fitted in a housing fitting portion in the electrical junction box of the second embodiment.

FIG. 15 is a cross-sectional view showing a state in which the connector housing is inserted into the housing fitting portion in a semi-fitted state in the electrical junction box of the second embodiment.

FIG. 16 is an exploded perspective view showing an electric junction box of a third embodiment.

FIG. 17 is a perspective view showing a state where the L-shaped terminal portion is housed in the housing fitting portion in the electric connection box of the third embodiment.

FIG. 18 is a perspective view showing a state in which an L-shaped terminal portion and a connector housing are inserted into a housing fitting portion in the electric junction box of the third embodiment.

FIG. 19 is a sectional view showing a state before the connector housing is inserted into the housing fitting portion in the electrical junction box of the third embodiment.

FIG. 20 is a sectional view showing a state before the connector housing is inserted into the housing fitting portion in the electrical junction box of the third embodiment.

FIG. 21 is a sectional view showing a state in which a connector housing is inserted into a housing fitting portion in the electric connection box of the third embodiment.

FIG. 22 is a sectional view showing a state where the connector housing is inserted into the housing fitting portion in the electrical junction box of the third embodiment.

FIG. 23 is an exploded perspective view showing a conventional electric junction box.

FIG. 24 is a cross-sectional view showing a housing fitting portion in a conventional electric junction box.

FIG. 25 is a cross-sectional view showing a conventional electric connection box in which a connector housing is integrally formed with a connection box body.

FIG. 26 is a cross-sectional view showing a state in which a mating connector is fitted in a conventional electric connection box in which a connector housing is integrally formed with a connection box body, and FIG. 26 (b) is a front view showing the connector housing. .

[Explanation of symbols]

20, 52, 59 Electrical junction box 21, 55, 59 Junction box body 22,61 Busbar 23, 62 Housing fitting part 24, 53, 63 Connector housing 29 Guide 34, 73 L type terminal 36, 75 Hood part 37,76 Terminal insertion port 38, 77 Terminal enclosure support 54 Fitting confirmation means

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H02G 3/16 H01R 13/40

Claims (8)

(57) [Claims] 1. An L-shaped terminal portion of a bus bar, which is fitted in a housing fitting portion of a connection box body and is assembled in the connection box body to form a branch circuit, in a hood portion of the connector housing. Terminal insertion port (3
7) An electrical connection box projecting from (7), wherein an opening edge portion of the terminal insertion opening is provided with a terminal enclosure support portion that abuts and supports the outer surface of the L-shaped terminal. box. 2. The invention according to claim 1, wherein the terminal enclosing support portion has an outer wall portion extending outward from an opening edge portion of the terminal insertion opening, and an opening edge portion of the terminal insertion opening. Is composed of an inner wall portion extending toward the hood portion and an inner wall of the terminal insertion port. 3. The invention according to claim 1 or 2, wherein the connector housing is provided with a guide support groove portion along a fitting direction to the housing fitting portion, and the housing fitting portion has a guide supporting groove portion. An electric junction box, wherein a guide portion to be inserted into the guide support groove portion is provided. 4. The invention according to claim 3, wherein a groove-side protrusion that is provided on the inner wall of the guide support groove portion and a groove-side protrusion that is provided on the guide portion and engages with the groove-side protrusion An electrical junction box comprising: locking means including a guide portion side protrusion that is fixed to the housing fitting portion. 5. The invention according to claim 4, wherein a protrusion that holds the L-shaped terminal portion between the L-shaped terminal portion and the inner wall of the housing fitting portion in the locked state by the locking means, and the guide portion in the locked state. An electric junction box having a stopper that comes into contact with the electric junction box. 6. The invention according to any one of claims 1 to 5, further comprising a fitting confirmation means capable of confirming a fitting state of the connector housing to the housing fitting portion. Characteristic electrical junction box. 7. The invention according to claim 6, wherein the fitting confirmation means is provided on the projecting wall portion provided on the connector housing and the connection box body, and is connected to the housing fitting portion. An electrical connection box comprising: a fitting hole into which the protruding wall portion is inserted when the housing is fitted, and a fitting confirmation window capable of confirming an insertion position of the protruding wall portion into the fitting hole. . 8. The invention according to any one of claims 1 to 7, wherein when the connector housing is fitted into the housing fitting portion, the bus bar is provided between the bus bar and the connection box body. An electrical junction box, characterized in that a bus bar cover portion sandwiched by is provided in a connector housing.