JP2016208561A - Electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box capable of reducing man-hours of work.SOLUTION: An electric connection box 21 comprises an electric connection box body 23 and an electronic component unit 25 with cover function. The electric connection box body 23 includes a resin body case 26. At a position visible from a top face opening 28 of the body case 26, a housing part 37 is formed. The electronic component unit 25 with cover function is formed by mounting an upper cover 46 over an electronic component unit 45 and integrating them. When the electronic component unit 25 with cover function is assembled with the electric connection box body 23, the electronic component unit 45 is accommodated in the housing part 37 of the body case 26 by the assembly, and the top face opening 28 of the body case 26 is covered by the upper cover 46. Regarding the integration, a unit-side attachable/detachable part 49 in a fixed shape is formed in the electronic component unit 45. In the upper cover 46, a cover-side attachable/detachable part 53 is formed which is freely attachable to and detachable from the unit-side attachable/detachable part 49 and is formed in a fixed shape.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrical junction box mounted on a vehicle such as an automobile, and more particularly to an electrical junction box including an electronic component unit in its configuration.

  As an electric device mounted on a vehicle such as an automobile, for example, an electric junction box can be cited. The electric junction box is known as a general term for a relay box, a fuse box, a junction block, or the like. Hereinafter, a conventional electrical junction box will be briefly described.

  5 to 7, the conventional electrical junction box 1 includes an electrical junction box body 2, an electronic component unit 3, an upper cover 4, and a lower cover 5. The electric junction box main body 2 has a resin-made main body case 6 and an electric circuit (not shown) provided in the main body case 6. A housing portion 8 is formed at a position facing the opening 7 of the main body case 6. The accommodating portion 8 is formed as a portion for accommodating the electronic component unit 3. Examples of the electronic component unit 3 include an ECU. The upper cover 4 is made of resin and is formed so as to cover the opening 7.

  The following Patent Document 1 discloses a technique similar to the electrical junction box 1 described above.

JP 2010-51161 A

  In the conventional electrical junction box 1, at least an operation of housing the electronic component unit 3 in the housing portion 8 of the main body case 6 and an upper cover of the opening portion 7 of the main body case 6 as work on the assembly line of the automobile. Since it is necessary to perform the operation | work covered by 4, it has the problem that a man-hour will start by the part of these operations.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the electrical junction box which can aim at reduction of an operation man-hour.

  The electrical junction box according to claim 1, which has been made to solve the above-described problems, includes an electrical junction box main body having an accommodating portion at a position facing the opening of the main body case, and an electron accommodated in the accommodating portion. In an electrical junction box comprising a component unit and a cover covering the opening, a unit-side detachable portion having a fixed shape is formed in the electronic component unit, and the cover is also detachable from the unit-side detachable portion. A cover-side attaching / detaching portion having a fixed shape is formed, and the electronic component unit with a cover function is formed by attaching the cover to the electronic component unit via the unit-side attaching / detaching portion and the cover-side attaching / detaching portion. To do.

  According to the present invention having such a feature, when the electronic component unit with a cover function is assembled to the main body of the electrical connection box, the electronic component unit is accommodated in the accommodating portion of the main body case only by the assembling operation. At the same time, the opening of the main body case is covered with a cover.

  According to a second aspect of the present invention, in the electrical junction box according to the first aspect, a plurality of types of the electronic component units are prepared in order to respond to a specification change of the electrical junction box, The cover is attached to the selected electronic component unit to form the electronic component unit with a cover function.

  According to the present invention having such a feature, even when it is necessary to change the specifications of the electrical junction box, an optimum one is selected from a plurality of types of electronic component units, and a cover is attached thereto. do it. According to the present invention, it is possible to cope with a change in the specifications of the electrical junction box by changing only the electronic component unit.

  According to the first aspect of the present invention, an electronic component unit with a cover function is formed in advance by mounting a cover on the electronic component unit, and the electric junction box is in the state of the electronic component unit with a cover function. As a result, it is possible to reduce the number of work steps compared to the conventional example.

  According to the present invention described in claim 2, in addition to the effect of claim 1, the following effect is further exhibited. In other words, there is an effect that it is possible to respond flexibly and speedily to changes in the specifications of the electrical junction box.

It is a perspective view which shows the middle state of the assembly | attachment operation | work of the electrical junction box which concerns on this invention. It is an expansion perspective view of an electronic component unit with a cover function. It is a figure of the electronic component unit with a cover function, (a) is a disassembled perspective view, (b) is a schematic diagram of a unit side attaching / detaching part and a cover side attaching / detaching part. It is a perspective view which shows the completion state of the assembly | attachment operation | work of an electrical junction box. It is a figure of the electrical junction box which concerns on a prior art example, and is a perspective view which shows the operation | work which accommodates an electronic component unit in the accommodating part of a main body case. It is a perspective view which shows the state of the operation | work which covers the opening part of a main body case with an upper cover. It is a perspective view which shows the completion state of the assembly | attachment operation | work of the electrical junction box of FIG.

  The electrical junction box is configured to include an electrical junction box main body and an electronic component unit with a cover function. The electrical junction box main body has a resin-made main body case and an electric circuit provided therein. A housing portion for the electronic component unit is formed at a position facing the opening of the main body case. The electronic component unit with a cover function is formed by attaching and integrating a cover to the electronic component unit. When the electronic component unit with a cover function is assembled to the main body of the electrical junction box, the electronic component unit is accommodated in the accommodating portion of the main body case by this assembling, and the opening of the main body case is covered with the cover. Regarding the integration, a unit-side detachable portion having a fixed shape is formed in the electronic component unit. Further, the cover is formed with a cover-side detachable part having a fixed shape that is detachable from the unit-side detachable part.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a perspective view showing an intermediate state of an assembling work of an electric junction box according to the present invention. 2 is an enlarged perspective view of the electronic component unit with a cover function, FIG. 3 is a diagram of the electronic component unit with a cover function, and FIG. 4 is a perspective view showing a completed state of the assembly operation of the electrical junction box. In FIG. 1, the arrow P indicates the up-down direction, the arrow Q indicates the left-right direction, and the arrow R indicates the front-rear direction.

<About the electrical connection box 21>
In FIG. 1, reference numeral 21 indicates an electrical junction box of the present invention mounted at a predetermined position of an automobile. Reference numeral 22 indicates a wire harness drawn from the electrical junction box 21. In addition, although not particularly illustrated, another wire harness from the power source side is drawn.

  The electrical junction box 21 includes an electrical junction box body 23, a resin lower cover 24 assembled from the lower side of the electrical junction box body 23, and an electronic component unit 25 with a cover function assembled from the upper side of the electrical junction box body 23. It is configured with. The electrical junction box 21 has two electrical functional parts by the above configuration. That is, it has the electrical junction box main body 23 as a first electrical functional part (functional part corresponding to a relay box). Moreover, it has the electronic component unit 25 with a cover function as a 2nd electrical function part (for example, function part corresponded to power integration).

  As will be understood from the following description, the electrical junction box 21 of the present invention is characterized in that it has a configuration and a structure that contribute to a reduction in work man-hours.

<About the electrical junction box body 23>
The electrical junction box body 23 includes an insulating resin body case 26, an electrical circuit including a bus bar (not shown) having conductivity, fuses and fusible links (not shown), and relays (not shown). Composed.

  The main body case 26 is formed with an outer peripheral wall 27, an upper surface opening 28 (opening), and a lower surface opening (not shown). In addition, fixed leg portions 29 and 30, lock portions 31 and 32, and a harness holding cylinder 33 are formed on the outer peripheral wall 27.

  The fixed leg portions 29 and 30 are formed in leg-like portions that protrude outward from the outer peripheral wall 27. The fixed leg portions 29 and 30 are formed as portions for fixing the electrical junction box 21 to a body or the like (not shown). The lock portion 31 is formed as a portion for locking an upper cover 46 described later. Such a lock portion 31 is disposed and formed near the upper end of the outer peripheral wall 27. On the other hand, the lock portion 32 is formed as a portion for locking the lower cover 24. Such a lock portion 32 is disposed and formed near the lower end of the outer peripheral wall 27. The lock portion 32 is formed at a plurality of locations.

  The harness holding cylinder 33 is disposed and formed at the drawing position of the wire harness 22. The harness holding cylinder 33 is formed in a semi-cylindrical shape or an arc shape. The harness holding cylinder 33 is formed in a portion such that when the lower cover 24 overlaps with a harness lead 44 (described later) of the lower cover 24, the overlapping portion becomes a circle. The harness holding cylinder 33 is formed so that the wire harness 22 can be held by tape winding.

  Various cavities 34 to 36 and a housing portion 37 are formed inside the outer peripheral wall 27. These are arranged and formed at positions facing the upper surface opening 28 of the main body case 26. The cavities 34 to 36 are formed as portions to which fuses and fusible links (not shown) are attached. A part of an electric circuit (not shown) is arranged inside the cavities 34 to 36. The electric circuit has a connection portion to the wire harness 22. When a fuse, a fusible link or the like (not shown) is attached to the cavities 34 to 36, a functional portion corresponding to a known relay box is formed.

  The accommodating portion 37 is formed as a portion for accommodating an electronic component unit 45 described later. The accommodating portion 37 is formed as a recessed portion having a substantially rectangular shape in plan view and a deep bottom. The accommodating part 37 is formed, for example so that the branch lines 38 and 39 and the connectors 40 and 41 (refer FIG. 2) of the wire harness 22 can be pulled out from this bottom part. Guide portions 42 are respectively formed on the left and right inner surfaces of the accommodating portion 37. The guide part 42 is formed as a part for guiding the electronic component unit 45 when it is accommodated.

<About the lower cover 24>
The lower cover 24 is formed so as to cover a lower surface opening (not shown) of the main body case 26. The lower cover 24 is formed with a plurality of lock portions 43 that are engaged with the lock portions 32 of the main body case 26. Further, a harness lead-out 44 is formed in the lower cover 24. The harness lead-out 44 is disposed and formed in a portion where the wire harness 22 is led out. The harness lead-out 44 is formed in a shape shorter than the harness holding cylinder 33.

<About electronic component unit 25 with cover function>
1 to 4, the electronic component unit 25 with a cover function includes an electronic component unit 45 and an upper cover 46 (cover). The electronic component unit 25 with a cover function is formed by attaching an upper cover 46 to the electronic component unit 45 and integrating them.

<About the electronic component unit 45>
Examples of the electronic component unit 45 include power integration. Such an electronic component unit 45 is configured to include a unit case 47, a substrate accommodated in the unit case 47, various electronic components, and the like. The unit case 47 is formed with a pair of guided portions 48 and a unit side attaching / detaching portion 49. The guided portion 48 is formed as a portion guided by the guide portion 42 of the accommodating portion 37.

  The electronic component unit 45 is provided with connectors 50 and 51. The connectors 50 and 51 are formed so that the connectors 40 and 41 provided at the terminals of the branch lines 38 and 39 can be connected after the branch lines 38 and 39 of the wire harness 22 are drawn (FIG. 2). reference).

  It should be noted that a plurality of types of electronic component units 45 are prepared in order to respond to changes in the specifications of the electrical junction box 21 (the unit case 47 is used in common, and a substrate and various electronic components accommodated in the unit case 47) Etc.) The electronic component unit 45 is selected from a plurality of types.

<About the unit-side detachable part 49>
The unit side attaching / detaching portion 49 is formed as a portion required when the upper cover 46 is attached to and integrated with the electronic component unit 45. Such a unit side attaching / detaching portion 49 is formed in a fixed shape (a common shape). In this embodiment, the unit side attaching / detaching portion 49 is formed so as to use the front surface and the rear surface of the unit case 47 as they are. It is also formed in a portion that is press-fitted or clamped by a cover-side attaching / detaching portion 51 to be described later (this is an example. The unit-side attaching / detaching portion 49 can make the upper cover 46 detachable If it is a part which can be made into a fixed shape (common shape), it is not particularly limited to this embodiment.

<About the upper cover 46>
The upper cover 46 is formed so as to cover the upper surface opening 28 of the main body case 26. Such an upper cover 46 is formed with a lock portion 52 that is engaged with the lock portion 31 of the main body case 26. The upper cover 46 is formed with a cover side attaching / detaching portion 53.

<About the cover side attaching / detaching portion 53>
The cover side attaching / detaching portion 53 is formed as a portion that is detachably attached to the unit side attaching / detaching portion 49 of the electronic component unit 45. In this embodiment, the cover side attaching / detaching portion 53 is formed in a portion where the unit side attaching / detaching portion 49 can be press-fitted or clamped (see FIG. 3B. The shape is an example).

<Assembly of electronic component unit 25 with cover function>
In FIG. 3, the electronic component unit 25 with a cover function is formed in an integrated state by attaching an upper cover 46 to the electronic component unit 45 via the unit side attaching / detaching portion 49 and the cover side attaching / detaching portion 53. The electronic component unit 25 with a cover function is assembled as described above and formed in an integrated state before being transported to, for example, an automobile assembly line.

<Assembly work of the electrical junction box 21 in the automobile assembly line>
In the above configuration and structure, as shown in FIG. 1, the electronic component unit 25 with a cover function is arranged on the upper side of the electrical junction box body 23 (at this time, the branch lines 38 and 39 of the wire harness 22 are pulled out to connect the connectors. Then, when the electronic component unit 25 with a cover function is moved downward and assembled to the electric junction box main body 23, the electronic component unit 45 is accommodated in the accommodating portion 37 of the main body case 26, and The upper cover 28 covers the upper opening 28 of the main body case 26 (see FIG. 4). That is, what was two operations in the conventional example can be completed by one operation in the present invention.

<Summary and effect of the present invention>
As described above with reference to FIGS. 1 to 4, the electrical connection box 21 includes the electrical connection box main body 23 and the electronic component unit 25 with a cover function. The electrical junction box main body 23 has a resin-made main body case 26 and an electric circuit provided inside the main body case 26. A housing 37 for the electronic component unit 45 is formed at a position facing the upper surface opening 28 of the main body case 26.

  The electronic component unit 25 with a cover function is formed by attaching an upper cover 46 to the electronic component unit 45 and integrating them. When the electronic component unit 25 with a cover function is assembled to the electrical junction box main body 23, the electronic component unit 45 is accommodated in the accommodating portion 37 of the main body case 26 by this assembling. The upper surface opening 28 is covered.

  Regarding the integration, the electronic component unit 45 is formed with a unit-side detachable portion 49 having a fixed shape. The upper cover 46 is formed with a cover-side detachable portion 53 having a fixed shape that is detachable from the unit-side detachable portion 49.

  Therefore, according to the present invention, the upper cover 46 is attached to the electronic component unit 45 to preliminarily form the electronic component unit 25 with the cover function, and the electric junction box is in the state of the electronic component unit 25 with the cover function. Since it is sufficient to perform 21 assembling operations, it is possible to reduce the number of work steps compared to the conventional example.

  In addition, according to the present invention, even when it is necessary to change the specifications of the electrical junction box 21, an optimal one is selected from a plurality of types of electronic component units 45, and the upper cover 46 is attached thereto. Since it has only to be mounted, the change in the specifications of the electrical connection box 21 can be accommodated by changing only the electronic component unit 45.

  That is, there is an effect that the specification change of the electrical connection box 21 can be flexibly and speedily handled.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 21 ... Electrical junction box, 22 ... Wire harness, 23 ... Electrical junction box main body, 24 ... Lower cover, 25 ... Electronic component unit with a cover function, 26 ... Main body case, 27 ... Outer wall, 28 ... Upper surface opening (opening) 29, 30 ... fixed leg part, 31, 32 ... lock part, 33 ... harness holding cylinder, 34-36 ... cavity, 37 ... accommodating part, 38, 39 ... branch line, 40, 41 ... connector, 42 ... guide part , 43 ... Lock part, 44 ... Harness lead-out, 45 ... Electronic component unit, 46 ... Upper cover (cover), 47 ... Unit case, 48 ... Guided part, 49 ... Unit side attaching / detaching part, 50, 51 ... Connector, 52 ... Lock part, 53 ... Cover side attaching / detaching part

Claims (2)

In an electrical junction box comprising an electrical junction box body having a housing portion at a position facing the opening of the body case, an electronic component unit housed in the housing portion, and a cover covering the opening portion,
A unit-side detachable part having a fixed shape is formed in the electronic component unit, and a cover-side detachable part having a fixed shape is detachably attached to the unit-side detachable part in the cover, and the unit-side detachable part And an electronic component unit having a cover function by attaching the cover to the electronic component unit via the cover side attaching / detaching portion. The electrical junction box according to claim 1,
A plurality of types of the electronic component units are prepared in order to respond to the specification change of the electrical junction box, and the cover is attached to the electronic component unit selected from the plurality of types, and the electronic component unit with the cover function An electrical junction box characterized by forming.

Images