JP6122737B2 - Electrical junction box and its packing structure - Google Patents

Description

  The present invention relates to an electrical junction box and its packaging structure.

  2. Description of the Related Art Conventionally, as an electrical connection box that can accommodate a control board such as an ECU (Electronic Control Unit), for example, a cover that is mounted on a case of an electrical connection box is configured to be temporarily locked and permanently locked. (See Patent Document 1 below). In this electrical connection box, the cover is temporarily locked to the case before mounting the control board and transported, etc., and after mounting, the cover is fully locked to complete the electrical connection box. The mounting side of the control board can be reliably protected.

JP 2004-96899 A

  However, in the electric junction box of the prior art disclosed in Patent Document 1, the structure of the case and the cover becomes complicated because the cover can be temporarily locked and permanently locked to the case. There is.

  The present invention eliminates the problems caused by the prior art described above, and is an electric junction box having a control board mounting portion on the outer surface side of the case, and can reliably protect the control board mounting portion during transportation. An object is to provide an electrical junction box and its packaging structure.

  An electrical junction box according to the present invention has an internal circuit including a bus bar housed in a case portion, and a board mounting portion on which a control board on which an electronic control unit connected to the internal circuit is mounted is mounted. A plurality of positioning protrusions are formed on the main surface of the case portion, and projecting from the connection terminal extending from the internal circuit on the substrate mounting portion, and positioning the control substrate and mounting the control substrate on the substrate mounting portion Wherein the case portion has a convex portion formed outside the region of the substrate mounting portion of the main surface, and the plurality of positioning protrusions are two electric connection boxes. The positioning protrusions are formed at positions that do not interfere with each other when the substrate mounting portions are opposed to each other so that the main surfaces are parallel to each other, and the convex portions are State Wherein the total height of the protrusions from the main surface can is formed to be higher than the height of the positioning projection.

  According to the electrical junction box according to the present invention, the plurality of positioning protrusions and convex portions of the case portion are overlapped so that the substrate mounting portions of the two electrical junction boxes face each other and the main surfaces are parallel to each other The positioning projections are formed at positions where they do not interfere with each other, and the total height of the projections from the main surface is higher than the height of the positioning projections. It is possible to protect by overlapping so as to cover with the part.

  The packaging structure according to the present invention is a packaging structure for packaging the electrical junction box described above, wherein two electrical junction boxes are packed into one by a holding mechanism that fixes and holds the superimposed state. And

  According to the packaging structure of the present invention, two electrical connection boxes can be packed together in a state where they are overlapped by the holding mechanism as described above. Can be protected by being overlapped so as to be covered with a case portion and packed into one, and the substrate mounting portion can be reliably protected during transportation.

  In one Embodiment of this invention, the said holding mechanism consists of a band member with which the outer peripheral side of the said case part of the said two electrical junction boxes is mounted | worn.

  In another embodiment of the present invention, the holding mechanism includes a first portion formed on the convex portion of the two electric junction boxes and the case portion or the convex portion that contacts the convex portion. It consists of a latching portion and a second latching portion with which the first latching portion formed on the other is engaged.

  Furthermore, in still another embodiment of the present invention, a lock mechanism for attaching a cover portion that covers the control board mounted on the board mounting portion is provided on the main surface of the case portion and a side surface that intersects the main surface. The holding mechanism is configured by the lock mechanism.

  In still another embodiment of the present invention, the holding mechanism includes the projecting portion of the two electrical junction boxes and a clip member attached to both the case portion or the projecting portion in contact with the projecting portion. .

  According to the present invention, the mounting portion of the control board can be reliably protected during transportation.

It is a perspective view showing the appearance of the electric junction box concerning a 1st embodiment of the present invention. It is N1 arrow line view of FIG. 1 which shows the packaging structure of the same electrical junction box. It is a side view which shows the other structure and packing structure of the same electrical junction box. It is a perspective view which shows the external appearance of the electrical-connection box which concerns on the 2nd Embodiment of this invention. It is N2 arrow line view of FIG. 4 which shows the packing structure of the same electrical junction box. It is a side view which shows the structure which attached the cover after attaching the control board of the same electrical junction box. It is a side view which shows a part of packing structure of the electrical junction box concerning a 3rd embodiment of the present invention in section.

  Hereinafter, an electrical junction box and its packaging structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing an appearance of an electrical junction box according to the first embodiment of the present invention. 2 is a view taken in the direction of arrow N1 in FIG. 1 showing the packaging structure of the electrical junction box. As shown in FIG. 1, the electrical junction box 1 according to the first embodiment is used as an electrical junction box mounted on a vehicle such as an automobile, and is configured as a semi-assy component, for example. The electrical junction box 1 is configured by accommodating an internal circuit (not shown) inside a case portion 10 made of, for example, a rectangular resin molded member.

  The case portion 10 is configured by combining, for example, a plurality of case housings that are detachable up and down, and each case housing has an engagement protrusion formed at a position corresponding to each other on each side surface portion and a protrusion to which the protrusion fits. They are engaged and fixed to each other by a known locking mechanism (not shown) composed of a combination groove or the like.

  The lower case housing is formed with a plurality of positioning projections (bosses) 19 extending upward from the bottom surface by a predetermined length and penetrating the upper case housing.

  These bosses 19 are inserted into positioning holes formed in the control board or the like when mounting the control board or the like to be described later on the electrical connection box 1 and used for accurate positioning on the board mounting portion 16. Note that the upper and lower case housings may be fixed with screws at predetermined locations, for example.

  A substrate mounting portion 16 is formed on the upper surface (main surface) 10 a of the case portion 10. The board mounting part 16 is formed with a terminal hole 10b through which the connection terminal 24 extending upward from the internal circuit is inserted from the inside of the case part 10 onto the board mounting part 16. A control board (not shown) on which electronic components such as an electronic control unit (ECU) connected to the internal circuit via the connection terminals 24 is mounted on the board mounting portion 16 is mounted. The control board can be replaced with the case part 10 so that the circuit pattern of the electronic circuit can be changed and applied when the circuit design of the electric connection box 1 or the control mode by the electric connection box 1 is changed. It is to be attached to.

  Further, on the upper surface 10 a of the case portion 10, the peripheral wall portion 11 that protrudes upward is formed on the end side in the directions of arrows A and B in the drawing, that is, on the upper surface 10 a and outside the region of the substrate mounting portion 16. 12 and a connector portion 14 provided on the peripheral wall portions 11 and 12 to which an external connector (not shown) is fitted and connected. The peripheral wall portions 11 and 12 and the connector portion 14 constitute a convex portion. The board mounting portion 16 provided between the peripheral wall portions 11 and 12 is formed flat on the upper surface 10 a of the case portion 10.

  As shown in FIG. 2, the boss 19 protruding on the upper surface 10 a in the board mounting portion 16 connects, for example, two electrical connection boxes 1 formed with the structure shown in FIG. The bosses 19 of the electrical junction boxes 1 are formed at positions where they do not interfere with each other when the portions 11 and 12 are opposed to each other so that the upper surfaces 10a are parallel to each other.

  The boss 19 is, for example, a state in which the peripheral wall portions 11 and 12 in the A direction and the B direction of the two electrical junction boxes 1 are reversed from the above-described modes (that is, the peripheral wall portion 11 and the peripheral wall portion 12 are The bosses 19 are formed at positions that are set so as not to interfere with each other even in a state where they face each other.

  Moreover, when the surrounding wall parts 11 and 12 including the connector part 14 are overlapped as described above, the heights Lb and Lc of the surrounding wall parts 11 and 12 and the connector part 14 from the upper surface 10a of each electrical connection box 1 are set. The combined total height Lb + Lc is formed on the upper surface 10a of the case portion 10 so as to be higher than the height La of the boss 19 (that is, Lb + Lc> La). This dimensional relationship is the same even when the height of the connector portion 14 is ignored. By forming the peripheral wall portions 11 and 12 and the boss 19 and the like in such a dimensional relationship, there is no problem such that the tip of the boss 19 is damaged by contacting the upper surface 10a.

  In addition, the two electrical connection boxes 1 are mounted with the band 13 made of a strip-like material as a holding mechanism for fixing and holding the superimposed state on the outer peripheral side of the case portion 10 of these electrical connection boxes 1. Is packed into one. Thereby, since the board | substrate mounting part 16 side of each electric connection box 1 can be conveyed in the state piled up so that it may cover with each case part 10, it can protect the board | substrate mounting part side reliably at the time of conveyance. Become.

  FIG. 3 is a side view showing another configuration and packing structure of the electric junction box. In the electrical junction box 1 described above, the peripheral wall portions 11 and 12 are formed on the upper surface 10a of the case portion 10, but as shown in FIG. 3, the peripheral wall portion 15 is formed of the substrate mounting portion 16 on the upper surface 10a. It suffices if it is formed outside the region.

  In this case, if the two electrical junction boxes 1 are overlapped so that the peripheral wall portions 15 are alternately arranged, the substrate mounting portions 16 are opposed to each other, and the upper surfaces 10a are parallel to each other, so that the substrate mounting portion is transported. The side can be reliably protected and the thickness in the vertical direction at the time of packing can be further suppressed, so that space saving during transportation can be achieved. In FIG. 3, the bosses 19 of the electrical junction boxes 1 are formed at positions that do not interfere with each other even in the surface direction of the upper surface 10a.

  FIG. 4 is a perspective view showing an appearance of an electrical junction box according to the second embodiment of the present invention. FIG. 5 is a view taken in the direction of arrow N2 in FIG. 4 showing the packaging structure of the electrical junction box. As shown in FIG. 4, the electrical junction box 1 </ b> A according to the second embodiment has the same structure as the electrical junction box 1 according to the first embodiment, but a holding mechanism that replaces the band 13 described above is provided. The point which was prepared is different.

  That is, the holding mechanism of the electrical junction box 1A includes, for example, a groove-like engaging recess 21 formed in a part of the side wall 17 on the peripheral wall 11 side and an engaging recess 21 formed in a part of the peripheral wall 12. And an engaging claw portion 22 to be engaged. With the holding mechanism configured in this manner, as shown in FIG. 5, for example, two electrical connection boxes 1 </ b> A formed with the structure shown in FIG. 4 are connected to each other with the substrate mounting portions 16 and the peripheral wall portion 11 and the peripheral wall. The overlapping is performed so that the portions 12 face each other and the upper surfaces 10a are parallel to each other.

  And if the engaging claw part 22 formed in the surrounding wall part 12 is each engaged with the engaging recessed part 21 formed in the side wall part 17, the board | substrate in the state which the boss | hubs 19 of each electrical junction box 1A do not mutually interfere. The mounting portion 16 side can be overlapped so as to be covered with each case portion 10 and packed together. Thereby, the board | substrate mounting part side can be reliably protected at the time of conveyance similarly to the electrical junction box 1 which concerns on 1st Embodiment.

  FIG. 6 is a side view showing a structure in which the cover is attached after the control board is attached. The holding mechanism composed of the engaging recess 21 and the engaging claw portion 22 is not only used for packing the two electrical connection boxes 1A, but as shown in FIG. 6, the control board 40 is mounted on the board mounting section 16, It can also be used as a lock mechanism for the cover 30 attached to the electrical connection box 1A to which the internal circuit and the control board 40 are connected via the connection terminal 24.

  That is, the cover 30 attached to the case portion 10 so as to cover the board mounting portion 16, the control board 40, the peripheral wall portion 11, the connector portion 14 and the like on the upper surface 10a of the electrical connection box 1A is, for example, a U-shape. It has a structure in which an engagement claw 22 is formed on one end 31 side and an engagement recess 21 is formed on the other end 32 side.

  When the cover 30 is attached to the electrical junction box 1A, the engaging claw portion 22 of the end portion 31 is fitted into the engaging concave portion 21 of the peripheral wall portion 11, and the engaging claw portion 22 of the peripheral wall portion 12 is connected to the end portion 32. Since the cover 30 is locked and fixed to the electrical junction box 1A by being fitted in the engagement recess 21, both can be reliably locked.

  FIG. 7: is a side view which shows a part in cross section the packing structure of the electrical junction box which concerns on the 3rd Embodiment of this invention. As shown in FIG. 7, the electrical junction box 1B according to the third embodiment has the same structure as the electrical junction boxes 1 and 1A according to the first and second embodiments, but the band 13 described above. Or the difference provided with a holding mechanism that replaces the engaging recess 21 and the engaging claw 22.

  That is, the holding mechanism of the electrical junction box 1B includes, for example, a hole portion 26 formed in a part of the outer surface of the peripheral wall portions 11 and 12, and a clip formed so that the protrusions on both ends are caught in these hole portions 26. 25. Even with the holding mechanism configured as described above, the two electrical junction boxes 1B can be overlapped as described above, and the board mounting portion side can be reliably protected during transportation or the like.

1, 1A, 1B Electrical connection box 10 Case part 10a Upper surface 11, 12, 15 Peripheral wall part 13 Band 14 Connector part 16 Board mounting part 19 Boss 21 Engaging concave part 22 Engaging claw part 23 Projection 24 Single part 25 Clip 26 Hole part 30 Cover 31, 32 edge

Claims (6)

A board mounting portion having an internal circuit including a bus bar housed inside the case portion and having a control board on which an electronic control unit connected to the internal circuit is mounted is formed on the main surface of the case portion. An electrical connection box in which a connection terminal extending from the internal circuit protrudes on the board mounting portion, and a plurality of positioning protrusions for positioning and mounting the control board on the board mounting portion. ,
The case portion is
Having a convex portion formed outside the region of the substrate mounting portion of the main surface;
The plurality of positioning protrusions are
When the substrate mounting portions of the two electrical connection boxes are opposed to each other so that the main surfaces are parallel to each other, the positioning protrusions are formed at positions that do not interfere with each other,
The convex portion is
An electrical junction box, wherein the total height of the protrusions from the main surface is higher than the height of the positioning protrusions in the overlapped state. A packaging structure for packaging the electrical junction box according to claim 1,
A packaging structure characterized in that two electrical junction boxes are packed into one by a holding mechanism that holds and holds the superposed state. The holding mechanism is
The packing structure according to claim 2, comprising a band member attached to an outer peripheral side of the case portion of the two electric junction boxes. The holding mechanism is
The first locking portion formed on either one of the convex portion of the two electrical junction boxes and the case portion or the convex portion contacting the convex portion, and the first locking portion The packaging structure according to claim 2, comprising a second locking portion with which the portion is engaged. A lock mechanism for attaching a cover portion covering the control board mounted on the substrate mounting portion is provided on the main surface of the case portion and a side surface intersecting the main surface,
The holding mechanism is
The packaging structure according to claim 2, comprising the lock mechanism. The holding mechanism is
The packaging structure according to claim 2, comprising a clip member attached to both the convex portion of the two electrical junction boxes and the case portion or the convex portion that contacts the convex portion.

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