JP6215580B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box mounted on an automobile.

  There are various types of electrical junction boxes mounted on automobiles. For example, as in the electrical junction box disclosed in Patent Document 1, a main body case, a base assembled in the main body case, and a main body There is a structure including a side cover that closes a notch formed in the peripheral wall of the case, and an upper cover that is assembled to the upper surface side of the main body case and covers the base.

  The side cover is positioned at a position to close the notch by sliding in the depth direction of the main body case. Further, the side cover positioned at a position for closing the notch is fixed to the main body case by being locked to a lock provided on the main body case.

JP 2012-34530 A

  In the above-described conventional electrical junction box, since the lock for fixing the side cover is provided in the main body case, the fixing structure of the side cover becomes complicated and a large space is required for the fixing structure of the side cover. There was a problem that it was necessary.

  Further, in the above-described conventional electrical junction box, the upper cover is assembled to the main body case in a state where the base is not assembled at the normal position in the main body case (hereinafter referred to as “half-fitted state”). There was a problem that the half-fitted state might be overlooked.

  Therefore, an object of the present invention is to provide an electrical junction box that can simplify the fixing structure of the side cover and can save the space of the fixing structure of the side cover.

The invention described in claim 1 includes a main body case, a base assembled in the main body case, and a side cover that closes a notch formed in a peripheral wall of the main body case, and the side cover includes: In the electrical junction box positioned at a position to close the notch by sliding in the depth direction of the main body case, the base is provided with a lock for fixing the side cover, An upper cover that is assembled on the upper surface side and covers the base is further provided, and a peripheral wall of the upper cover has a double wall structure including an outer peripheral wall and an inner peripheral wall, and an upper end portion of the side cover is connected to the outer peripheral wall. positioned between said inner peripheral wall, said side cover, fit detecting portion is provided in contact with the upper surface of the base, the lower end of the inner peripheral wall before An electrical connection box, characterized in that the contact with the upper surface of the connection detecting unit.

According to a second aspect of the present invention, in the first aspect of the present invention, a rail is provided on one of the inner edge of the notch and the outer edge of the side cover so that the other is movable. It is characterized by this.

According to the first aspect of the present invention, since the base is provided with a lock for fixing the side cover, the side cover fixing structure can be simplified, and the side cover fixing structure is provided. An electrical junction box that can save space can be provided.
In addition, since the side cover is provided with a fitting detection portion, when the base is in a semi-fitted state with respect to the main body case, the upper cover cannot be assembled to the main body case. Can be detected.

According to the invention described in claim 2 , since the rail for positioning the other is movably provided at either one of the inner edge of the notch and the outer edge of the side cover, the fixing structure of the side cover is provided. It is possible to provide an electrical junction box that can be simplified and can save the space for fixing the side cover.

It is a perspective view of the electrical connection box of a reference example . It is a figure which shows the state which removed the upper cover and the side cover from the main body case shown by FIG. FIG. 3 is a plan view of a main body case and a base shown in FIG. 2. It is a perspective view of one side cover shown by FIG. It is a figure which shows the back side of the side cover shown by FIG. FIG. 5 is a plan view of the side cover shown in FIG. 4. It is a perspective view of the other side cover shown by FIG. It is a figure which shows the back side of the side cover shown by FIG. FIG. 8 is a plan view of the side cover shown in FIG. 7. Is a perspective view of an electrical junction box according to the implementation embodiments of the present invention, showing a state in which removal of the upper cover from the main body case. It is a cross-sectional perspective view which shows the cross section along the AA in FIG. FIG. 12 is a cross-sectional view illustrating a state in which an upper cover is assembled to the main body case illustrated in FIG. 11.

The “electric connection box” of a reference example which is a premise of the present invention will be described with reference to FIGS.

  An electrical junction box 1 shown in FIG. 1 is mounted on an automobile and mainly performs power distribution. A main body case 2, a base 3 assembled in the main body case 2, a relay attached to the base 3, a fuse, A plurality of electronic components such as a bus bar, side covers 4 and 5 for closing notches 22 and 23 formed in the peripheral wall 21 of the main body case 2, and an upper cover that is assembled to the upper surface side of the main body case 2 and covers the base 3 6 are provided.

  The main body case 2 is formed in a deep box shape from a synthetic resin. As shown in FIGS. 2 and 3, the notches 22 and 23 are formed in a concave shape from the upper end to the lower end side of the peripheral wall 21 of the main body case 2 (in FIGS. 2 and 3, the electronic component and the wire harness 9 are formed). Is omitted.). As shown in FIG. 1, these notches 22 and 23 are closed by the side covers 4 and 5, leaving a portion for leading out the wire harness 9. The wire harness 9 is formed by bundling a plurality of electric wires. One end portions of these electric wires are electrically connected to an electronic component attached to the base 3. In the illustrated wire harness 9, the wire bundle is passed through the corrugated tube.

  Semi-cylindrical portions 24 and 25 are provided integrally with the main body case 2 at the lower edge portions of the notches 22 and 23. These semi-cylindrical parts 24 and 25 are combined with the semi-cylindrical parts 42 and 52 provided on the side covers 4 and 5 to constitute cylindrical wire harness lead-out parts 11 and 12. The semi-cylindrical portions 42 and 52 of the side covers 4 and 5 are provided with binding band through holes 43 and 53 (see FIGS. 4 and 7). In a state where the wire harness 9 is led out from the wire harness lead-out portions 11 and 12 (see FIG. 1), the binding band is passed through the binding band through holes 43 and 53, and the binding band is connected to the wire harness lead-out portions 11 and 12. Are firmly fixed to the semi-cylindrical portions 24, 25 on the main body case 2 side and the semi-cylindrical portions 42, 52 on the side cover 4, 5 side.

  A lock 7 for fixing the upper cover 6 is provided at the upper end of the peripheral wall 21 of the main body case 2 and the upper end of the side cover 4. The upper cover 6 is made of a synthetic resin and is formed in a shallow box shape having a ceiling wall 60 and a peripheral wall 61. The peripheral wall 61 is provided with a lock 8 that engages with the lock 7 of the main body case 2.

  The base 3 is formed in a block shape from a synthetic resin. On the upper surface side of the base 3, a component mounting portion 30 to which electronic components such as relays and fuses are attached is provided. One end of each electric wire of the bus bar and the wire harness 9 is inserted into the base 3 from the lower surface side of the base 3. Such a base 3 is assembled | attached to the upper part in the main body case 2, as shown in FIG. A wire harness 9 is routed in the lower part of the main body case 2. A pair of locks 34 and a pair of locks 35 for fixing the side covers 4 and 5 are provided at portions corresponding to the notches 22 and 23 on the side surface 31 of the base 3.

  The side cover 4 is made of a synthetic resin, and as shown in FIGS. 4 to 6, a plate portion 40 that matches the notch portion 22 and rails 41 provided on the outer edges of both sides of the plate portion 40 in the width direction. The semi-cylindrical portion 42 provided at the lower end portion of the plate portion 40, the lock 7 provided at the upper end portion of the plate portion 40, and a pair of locks 44 provided on the inner surface of the plate portion 40. It has one.

  Such a side cover 4 is positioned at a position where the cutout portion 22 is closed by sliding in the depth direction of the main body case 2 from the upper end side of the main body case 2. The side cover 4 positions the inner edge of the notch 22 in the rail 41 when sliding in the depth direction of the main body case 2. Furthermore, the side cover 4 is fixed to the base 3 and the main body case 2 when the pair of locks 44 are engaged with the pair of locks 34 of the base 3 when the side cover 4 is positioned at a position to close the notch 22.

  The lock 44 on the side cover 4 side is a protrusion having a triangular cross section, and the side cover 4 is positioned at a position where the side cover 4 slides in the depth direction of the main body case 2 to close the notch 22, thereby The lock 34 has a simple structure. The lock 3 on the base 3 side has a simple convex or concave structure having a surface on which the lock 44 on the side cover 4 side is hooked.

  As described above, in the electrical junction box 1, since the base 3 is provided with the lock 34 for fixing the side cover 4, the fixing structure of the side cover 4 can be simplified and the side cover 4 can be fixed. Space can be saved in the structure. Moreover, in the electrical junction box 1, since the rail 41 is provided in the outer edge of the width direction both sides of the board part 40 of the side cover 4, the side cover 4 is located in the position which blocks the notch part 22, and the lock | rock 44 is locked. It is possible to restrict the movement of the side cover 4 in the width direction of the plate portion 40 and the thickness direction of the plate portion 40 in a state of being locked to 34. As a result, the lock 44 and the lock 34 can have the very simple shape described above.

  In the electrical junction box 1, the rail 41 is provided on the side cover 4 side. However, a rail for movably positioning the outer edge of the side cover 4 may be provided on the inner edge of the notch 22.

  The side cover 5 has the same configuration as the side cover 4 described above, and is made of synthetic resin. As shown in FIGS. 7 to 9, the side cover 5 includes a plate portion 50 that matches the notch portion 23, rails 51 provided on outer edges on both sides in the width direction of the plate portion 50, and a lower end portion of the plate portion 50. The semi-cylindrical portion 52 provided and a pair of locks 55 provided on the inner surface of the plate portion 50 are integrally provided. Similar to the side cover 4, such a side cover 5 is positioned at a position where the cutout portion 23 is closed, and the pair of locks 55 are engaged with the pair of locks 35 of the base 3. It is fixed to the main body case 2.

  Then, the assembly procedure of the said electrical junction box 1 is demonstrated. First, electronic parts such as relays, fuses, and bus bars and one end of each electric wire of the wire harness 9 are attached to the base 3. Then, the base 3 is assembled in the main body case 2. At this time, the wire harness 9 is led out of the main body case 2 from the notches 22 and 23. The notches 22 and 23 are closed by the side covers 4 and 5, and the wire harness is provided between the semi-cylindrical portions 24 and 25 on the main body case 2 side and the semi-cylindrical portions 42 and 52 on the side cover 4, 5 side. 9 is positioned. Further, the binding bands are passed through the binding band through holes 43 and 53, and the semi-cylindrical portions 24 and 25 on the main body case 2 side and the semi-cylindrical portions 42 and 52 on the side covers 4 and 5 side are firmly fixed by the binding band. Finally, the assembly of the electrical junction box 1 is completed by assembling the upper cover 6 to the upper surface side of the main body case 2.

An “electric connection box” according to an embodiment of the present invention will be described with reference to FIGS. 10 to 12, the same components as those in the reference example described above are denoted by the same reference numerals and description thereof is omitted.

Electrical connection box 101 shown in FIG. 10 and 11, instead of the side cover 4 described in Reference Example, fit detecting portion 10 is provided with a side cover 104 provided, otherwise as described in Reference Example Electrical It has the same configuration as the connection box 1.

  As shown in FIG. 12, the fitting detection unit 10 protrudes from the inner surface of the plate unit 40 toward the base 3 side. The fitting detection unit 10 is positioned at a position where the side cover 104 closes the notch 22 and the pair of locks 44 are engaged with the pair of locks 34, so that the lower surface 10 b comes into contact with the upper surface 3 a of the base 3. .

  As shown in FIG. 12, the peripheral wall 61 of the upper cover 6 has a double wall structure including an outer peripheral wall 62 and an inner peripheral wall 63. In a state where the upper cover 6 is assembled to the main body case 2, the upper end portion 104 a of the side cover 104 is positioned between the outer peripheral wall 62 and the inner peripheral wall 63, and the lower end 63 a of the inner peripheral wall 63 is positioned in the fitting detection unit 10. It contacts the upper surface 10a.

  In such an electrical junction box 101, when the base 3 is in a semi-fitted state with respect to the main body case 2, that is, when the base 3 is slightly lifted from the main body case 2, the side cover 104 is similarly removed from the main body case 2. Since it is slightly lifted, it becomes impossible to lock the lock 8 (see FIG. 1) on the upper cover 6 side with the lock 7 on the main body case 2 side, and the upper cover 6 cannot be assembled to the main body case 2. . Thereby, the half-fitted state of the base 3 can be detected.

  Further, in the electrical connection box 101, the fitting detection unit 10 is provided only on the side cover 104, and the fitting detection unit 10 is not provided on the side cover 5. 10 can be provided. In that case, since the fitting detection part 10 exists in two places, the half-fitted state of the base 3 can be detected more reliably.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

1,101 Electrical junction box 2 Body case 3 Base 4, 5,104 Side cover 6 Upper cover 21 Peripheral wall 22, 23 Notch 34, 35 Lock

Claims (2)

A main body case, a base assembled in the main body case, and a side cover that closes a notch formed in a peripheral wall of the main body case,
In the electrical junction box positioned at a position where the side cover closes the notch by sliding in the depth direction of the main body case,
The base is provided with a lock for fixing the side cover,
An upper cover that is assembled to the upper surface of the main body case and covers the base;
The peripheral wall of the upper cover has a double wall structure composed of an outer peripheral wall and an inner peripheral wall,
An upper end portion of the side cover is positioned between the outer peripheral wall and the inner peripheral wall ;
The side cover is provided with a fitting detector that contacts the upper surface of the base,
An electrical junction box, wherein a lower end of the inner peripheral wall abuts on an upper surface of the fitting detection unit . The electrical connection box according to claim 1 , wherein a rail is provided on one of the inner edge of the cutout portion and the outer edge of the side cover so that the other is movable.

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