JP2013027224A - Electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box having a new structure which enables a clip part to be connected more stably in the electric connection box provided with a booster cable connection part to which the clip part of a booster cable may connect.SOLUTION: A booster cable connection part 18 comprises: a bus bar support wall 20 protruding from a box body 12; and a bus bar 22 overlapped with the bus bar support wall 20 and electrically connecting with a battery. Clip engagement protruding parts 36a, 36b, which protrude to both sides in the overlapping direction of the bus bar 22, are provided on the bus bar support wall 20.

Description

  The present invention relates to an electrical connection box that is mounted on an automobile or the like and is electrically connected to a battery, and more particularly, to an electrical connection box provided with a booster cable connection portion that can connect a clip portion of a booster cable. Is.

  As is well known, an automobile or the like is equipped with a battery as a power source for starting an engine or driving electric parts such as a lamp and a motor. The battery is electrically connected to an electrical connection box in which a relay, a fuse, and the like are mounted by a power line.

  By the way, when the engine cannot be started due to the battery being charged, it is necessary to start the engine with the battery charger of the cell starter or the battery of the other vehicle connected to the battery of the own vehicle via the booster cable.

  However, in some automobiles, the battery is prevented from being damaged due to a collision or the like, and in recent years, the battery is large, such as a so-called hybrid car that uses an electric motor in addition to a gasoline engine as a power source. For this reason, some batteries are disposed outside the engine room, for example, in the trunk room. In such an automobile, for example, when the battery is up, the trunk room cannot be opened due to the inoperability of the electronic key, and it may be difficult to connect the booster cable to the battery.

  Therefore, Japanese Patent Laid-Open No. 2002-330527 (Patent Document 1) discloses an electrical connection provided with a booster cable connection portion capable of connecting a clip portion of a booster cable in an electrical connection box disposed in an engine room. A box is disclosed. According to such an electrical junction box, the booster cable connection portion is sandwiched between the clip portions of the booster cable, so that the electrical connection is made from the engine room even when the battery is disposed outside the engine room. I can do it.

  However, in the electrical junction box described in Patent Document 1, the power line from the battery is crimped to the crimp terminal, and the crimp terminal is fixed to the bus bar with a bolt at the booster cable connection portion. And a clip part can be stably connected to a booster cable connection part by latching a clip part to the volt | bolt which fixes a crimp terminal here. Therefore, the crimp terminal is not bolted to the booster cable connection part because the power line cannot be routed to the booster cable connection part, or the installation space for the crimp terminal cannot be secured. When the bolt is not provided, it may be difficult to connect the clip portion stably.

JP 2002-330527 A

  The present invention has been made in the background of the above-described circumstances, and the problem to be solved is that in the electrical junction box provided with the booster cable connection portion that can be connected to the clip portion of the booster cable, the clip portion is An object of the present invention is to provide an electric junction box having a novel structure that can be connected more stably.

  A first aspect of the present invention is an electrical connection box in which a booster cable connection portion electrically connected to a battery is protruded from the box body, and the booster cable connection portion is sandwiched between clip portions of the booster cable. The booster cable connecting portion includes a bus bar support wall protruding from the box body, and a bus bar that is superimposed on the bus bar support wall and electrically connected to the battery, and the bus bar. The support wall is provided with clip locking protrusions protruding on both sides of the bus bar in the overlapping direction.

  According to the electrical junction box having the structure according to this aspect, the clip engaging protrusions are provided so as to protrude on both sides of the bus bar overlapping direction, which is the holding direction of the clip part of the booster cable on the bus bar support wall. Thereby, the clip part which clamps a booster cable connection part can be latched on both surfaces of a bus-bar support wall by a pair of clip latching protrusion. As a result, the clip portion can be prevented from coming off and rotating, and the booster cable can be stably connected to the booster cable connection portion. Further, since the clip locking projections protrude on both sides of the bus bar in the overlapping direction with the bus bar support wall, stable contact of the clip portions with the bus bar and reliable engagement with the clip locking projections are achieved. Combined is achieved at the same time. In short, it is possible to provide a stable connection of the clip part to the bus bar and a booster cable connection part without increasing the number of parts only by providing clip engagement protrusions protruding on both sides of the bus bar overlapping direction on the bus bar support wall. A reliable connection to is simultaneously achieved.

  A second aspect of the present invention is the one described in the first aspect, wherein the bus bar has a notch, and the clip locking projection is disposed in the notch. .

  According to this aspect, by disposing the clip locking projection in the notch of the bus bar, even when the arrangement area of the clip locking projection cannot be secured on the bus bar overlapping surface side of the bus bar support wall, The clip locking projection can be provided without increasing the space. Thereby, the connection stability of the clip part of a booster cable can be improved, satisfy | filling the space saving request | requirement of an electrical junction box. Further, by disposing the clip locking protrusion in the notch, the bus bar can also be disposed around the clip locking protrusion. Thereby, the clip part latched by the clip latching protrusion can be more reliably brought into contact with the bus bar around the clip latching protrusion.

  A third aspect of the present invention is the one described in the second aspect, wherein the notch is formed to open at the center of the tip edge portion of the portion protruding from the box body in the bus bar, The bus bar is disposed on both sides of the clip locking protrusion by disposing the clip locking protrusion in the notch.

  According to this aspect, since the clip locking projection is disposed at the center of the tip edge portion of the portion protruding from the box body of the bus bar, the clip locking projection is used as a mark, directly above the booster cable connection portion. The clip part can be pinched stably. In addition, since the clip engaging protrusion is disposed at the center in the width direction of the bus bar, the clip portion can be stably attached to the intermediate portion in the width direction of the bus bar support wall. Furthermore, since the bus bar is disposed on both sides of the clip locking projection, the clip portion can be brought into contact with the bus bar over a wide range.

  In the present invention, the bus bar support wall constituting the booster cable connecting portion is provided with clip locking protrusions that protrude on both sides of the bus bar in the overlapping direction. Thereby, the clip part of the booster cable which pinches | interposes a bus-bar support wall can be engaged with a pair of clip latching protrusion on both sides of a bus-bar support wall, and a clip part can be connected more stably.

The perspective view of the electrical-connection box as one Embodiment of this invention. The top view of the principal part of the electrical junction box shown in FIG. III-III sectional drawing in FIG. The perspective view of the principal part shown in FIG. The perspective view from the direction different from FIG. 4 of the principal part shown in FIG. The perspective view of a bus-bar. Sectional drawing corresponding to FIG. 3 which shows the connection state of the booster cable to the principal part shown in FIG. Explanatory drawing which shows the aspect from which a bus-bar and a clip latching protrusion differ. Explanatory drawing which shows the further different aspect of a bus-bar and a clip latching protrusion. Explanatory drawing which shows the further different aspect of a bus-bar and a clip latching protrusion. Explanatory drawing which shows the further different aspect of a bus-bar and a clip latching protrusion.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, FIG. 1 shows an electrical junction box 10 as an embodiment of the present invention. The electrical connection box 10 in the present embodiment is a relay box disposed in the engine room of an automobile, but the present invention is widely applicable to various electrical connection boxes such as a junction box and a fuse box.

  The electrical junction box 10 is formed with a box body 12 made of synthetic resin. A plurality of relay mounting portions 14, fuse mounting portions 16, and the like as electrical component mounting portions are formed on the box body 12. These relay mounting part 14 and fuse mounting part 16 are connected to relays, fuses and the like (not shown) as electrical parts.

  Further, the box body 12 is provided with a booster cable connection portion 18. The booster cable connection part 18 is shown in FIGS. The booster cable connection portion 18 includes a bus bar support wall 20 protruding from the box body 12 and a bus bar 22 superimposed on the bus bar support wall 20.

  The bus bar support wall 20 is formed of the same synthetic resin as the box body 12 by being integrally formed with the box body 12. The bus bar support wall 20 has a substantially longitudinal rectangular plate shape protruding on the same plane as the formation surface of the relay mounting portion 14 and the like in the box body 12. The bus bar support wall 20 protrudes upward (upward in FIG. 3) from the peripheral wall 24 erected on the peripheral edge of the box body 12 and can be held by a clip portion 52 of a booster cable 50 described later. Further, it is formed with a predetermined thickness dimension (dimension in the left-right direction in FIG. 3).

  Locking claws 28 and 28 project from the upper end portions of both side surfaces 26a and 26b in the width direction (left and right direction in FIG. 2) of the bus bar support wall 20, respectively. The locking claws 28 and 28 have the same shape. The locking claws 28 and 28 are formed in a protruding shape in which the projecting dimension from the side surfaces 26a and 26b gradually increases from the upper side to the lower side of the bus bar support wall 20, and the side surfaces 26a and 26b are formed at the lower ends. Each projecting vertically. As schematically shown in FIG. 3, these locking claws 28, 28 are attached to a mounting portion 30 protruding from the box body 12 in a locked state, and are made of rubber or the like that covers the booster cable connection portion 18. The cover member 32 is used to hold the booster cable connecting portion 18 in a cover state by engaging with a locking rib 34 protruding from the inner surface of the formed cover member 32.

  Further, on the bus bar support wall 20, clip engaging projections 36a and 36b are formed on both side surfaces 26c and 26d in the thickness direction (left and right direction in FIG. 3). The clip locking projections 36a and 36b are formed in a substantially rectangular block shape and are integrally formed with the bus bar support wall 20, and the thickness direction of the bus bar support wall 20 from the side surfaces 26c and 26d (left and right direction in FIG. 3), respectively. It protrudes outward. The sizes of the clip locking projections 36a and 36b may be different from each other. However, in the present embodiment, the width dimension (the dimension in the left-right direction in FIG. 2) and the projection dimension from the side surfaces 26c and 26d (FIG. 2). Middle and vertical dimensions) are substantially equal to each other, and are substantially equal in size.

  These clip latching protrusions 36a and 36b are formed at substantially central portions of the side surfaces 26c and 26d in the width direction (left and right direction in FIG. 2). Further, the clip locking protrusions 36a and 36b are formed at equal positions on the bus bar support wall 20 on the slightly upper end side in the vertical direction of the bus bar support wall 20 (vertical direction in FIG. 3).

  Furthermore, in the bus bar support wall 20, the upper end of the side surface 26 c on which the bus bar 22 is overlapped extends in the thickness direction (vertical direction in FIG. 2) of the bus bar support wall 20 over substantially the entire width of the bus bar support wall 20. A bus bar holding protrusion 38 protruding outward is formed. The bus bar holding protrusion 38 has a pair of bus bar insertion holes 40, 40 penetrating in the vertical direction (vertical direction in FIG. 3) and a predetermined distance in the width direction of the bus bar support wall 20 (horizontal direction in FIG. 2). Are formed with a gap. A clip locking projection 36 a formed on the side surface 26 c is formed so as to be connected to the bus bar holding projection 38.

  The bus bar 22 shown in FIG. 6 is superimposed on the side surface 26c of the bus bar support wall 20 as described above. The bus bar 22 is formed by press punching a metal plate. The bus bar 22 has a substantially rectangular flat plate shape, and is disposed so as to protrude in the same direction as the bus bar support wall 20 (upward in FIG. 3) from the formation surface of the relay mounting portion 14 and the like in the box body 12. ing. A rectangular notch 42 is formed at the front edge of the portion of the bus bar 22 protruding from the box body 12 so as to open in the center in the width direction of the protruding front edge. Thereby, the bus bar 22 is formed in a U shape having a pair of horizontal plate portions 44, 44 on both sides of the notch 42. In addition, insertion protrusions 46 and 46 are formed at the protruding leading edge portions of the horizontal plate portions 44 and 44, respectively. Further, the bus bar 22 is provided with through holes 48 at appropriate plural places.

  Such a bus bar 22 is inserted into the box body 12 from below (lower in FIG. 3), and the locking hole 48 is engaged with a lance (not shown) formed in the box body 12, and an appropriate not shown. It is fixed to the box body 12 by being bolted at the site. Moreover, although illustration is abbreviate | omitted, the bus-bar 22 is electrically connected with the battery by electrically connecting the electric wire connected with the + side terminal of the battery. When fixed to the box body 12, the bus bar 22 protrudes upward (upward in FIG. 3) from the formation surface of the relay body 14 in the box body 12, and overlaps the side surface 26 c of the bus bar support wall 20. ing. At the same time, the insertion protrusions 46 and 46 are inserted into the bus bar insertion holes 40 and 40 of the bus bar support wall 20. Thereby, the bus bar 22 is assembled to the side surface 26c of the bus bar support wall 20 in a superposed state without using bolts or the like. A clip locking protrusion 36 a protruding from the side surface 26 c is disposed in the notch 42 of the bus bar 22. Thereby, the horizontal plate portions 44 and 44 of the bus bar 22 are disposed on both sides of the clip locking projection 36a.

  As shown in FIG. 7, the electrical connection box 10 having such a structure is configured such that an upper case (not shown) that covers the box body 12 is removed and the cover member 32 is removed, whereby the booster cable connection portion 18 is Exposed. Then, two booster cables are prepared, and one booster cable (not shown) is connected to a negative terminal of a battery of another vehicle and is connected to an engine or body (not shown). Further, the other booster cable 50 is connected to the positive terminal of the battery of another vehicle, and the exposed bus bar support wall 20 is held by the clip portion 52 of the booster cable 50. Thereby, the battery of another vehicle and the battery of the own vehicle are electrically connected, and the engine can be started.

  According to the electrical connection box 10 having the structure according to the present embodiment, the booster cable connection portion 18 that is disposed in the engine room and electrically connected to the battery is provided. Thereby, even when the battery is disposed outside the engine room such as a trunk room, the booster cable 50 can be electrically connected to the battery of another vehicle via the booster cable connecting portion 18.

  As shown in FIG. 7, the clip portion 52 of the booster cable 50 is engaged with the clip locking projections 36 a and 36 b that are provided on both sides of the bus bar support wall 20 with the bus bar support wall 20 interposed therebetween. Stopped. Thereby, since the clip part 52 is latched by both surfaces of the bus-bar support wall 20, the clamping state of the bus-bar support wall 20 can be maintained stably. Even when the bus bar 22 is assembled to the bus bar support wall 20 without using bolts or the like, the clip portion 52 is locked to the clip locking protrusions 36a and 36b, so that the booster cable connection portion 18 is stably connected. I can do it.

  In particular, in the present embodiment, the pair of clip locking protrusions 36a and 36b are formed at substantially equal positions in the protruding direction of the bus bar support wall 20 from the box body 12. Thereby, the clip part 52 can be stably locked with good balance on both surfaces of the bus bar support wall 20. Further, since the bus bar support wall 20 protrudes above the peripheral wall 24 of the box body 12 and the clip locking projections 36a and 36b are provided at the upper end portion of the bus bar support wall 20, these clip locking The clip portion 52 can be easily sandwiched from above the booster cable connecting portion 18 with the protrusions 36a and 36b as marks. Further, the clip locking projection 36 a formed on the overlapping surface side of the bus bar 22 is arranged in the notch 42 of the bus bar 22. Thereby, the clip latching protrusion 36a can be provided in a space efficient manner. In particular, the clip engagement protrusion 36a is positioned at the center portion of the bus bar 22 in the width direction, and the horizontal plate portions 44, 44 of the bus bar 22 are disposed on both sides of the clip engagement protrusion 36a. The clip portion 52 locked to the stop protrusion 36 a can be reliably brought into contact with the bus bar 22.

  Furthermore, bus bar insertion holes 40, 40 are formed at the upper end of the bus bar support wall 20, and insertion protrusions 46, 46 formed at the upper edge of the bus bar 22 are formed in the bus bar insertion holes 40, 40. It is designed to be plugged in. Accordingly, the upper end portion of the bus bar 22 can be fixed to the bus bar support wall 20 without requiring bolt fixing, and can be assembled to the side surface 26c of the bus bar support wall 20 in a stable overlapping state with high work efficiency. Furthermore, since the clip locking protrusion 36a is connected to the bus bar holding protrusion 38 in which the bus bar insertion holes 40, 40 are formed, the strength of the clip locking protrusion 36a can be improved. The clip part 52 can be locked more stably.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, the specific shape of the bus bar is not limited to that of the above embodiment. 8 to 11 schematically illustrate different modes of the specific shape of the bus bar 22 and the arrangement position of the clip locking projection 36a. In the bus bar 22 shown in FIG. 8, a notch 42 is formed on one side in the width direction (left and right direction in FIG. 8). Thus, the notch 42 may be formed at a position deviated from the center of the bus bar 22 in the width direction. Further, in the bus bar 22 shown in FIG. 9, the notch 42 is formed below the upper edge 54 of the bus bar 22 (downward in FIG. 9) and is opened at one edge in the width direction. ing. In this way, the notch 42 may be formed by opening at the edge in the width direction of the bus bar 22. Furthermore, in the bus bar 22 shown in FIG. 10, a notch 42 is formed by being punched with a through-hole shape. In this way, the bus bar 22 can be disposed around the entire periphery of the clip locking protrusion 36 a disposed in the notch 42, and the clip portion 52 of the booster cable 50 can be more securely connected to the bus bar 22. Can be contacted. In the bus bar 22 shown in FIGS. 9 and 10, when the clip locking projection 36 a is accommodated in the notch 42, for example, when the bus bar 22 is inserted into the box body 12 and assembled, the box body 12 The clip locking projection 36a can be accommodated in the notch 42 by temporarily bending and deforming the bus bar 22 protruding from the side surface 26c of the bus bar support wall 20 in a direction away from the side surface 26c. Furthermore, the notch of the bus bar is not necessarily required. For example, as shown in FIG. 11, a clip locking projection 36a is provided on the side surface 26c of the bus bar support wall 20 at a position where it does not overlap with the bus bar 22. Also good.

  Further, the specific shape of the clip locking protrusion is not limited to the rectangular block shape as in the above embodiment, and for example, it protrudes with a polygonal cross section such as a trapezoid or a triangle, or a circular or elliptical cross section. For example, various shapes can be appropriately employed. Furthermore, you may form a some clip latching protrusion in the side surface of a bus-bar support wall as needed. Furthermore, the insertion holes 40 and 40 provided in the upper end portion of the bus bar support wall 20 in the above-described embodiment and the insertion protrusions 46 and 46 of the bus bar 22 inserted into the insertion holes are not necessarily required.

10: Electrical connection box, 12: Box body, 18: Booster cable connection part, 20: Bus bar support wall, 22: Bus bar, 26a to d: Side surface, 32: Cover member, 36a, b: Clip locking protrusion, 42 : Notch, 50: Booster cable, 52: Clip part

Claims (3)

A booster cable connection portion that is electrically connected to the battery is protruded from the box body, and the booster cable connection portion is sandwiched between clip portions of the booster cable.
The booster cable connection portion includes a bus bar support wall protruding from the box body, and a bus bar that is superimposed on the bus bar support wall and electrically connected to the battery,
An electrical junction box, wherein the bus bar support wall is provided with clip locking projections projecting on both sides of the bus bar in the overlapping direction. The electrical connection box according to claim 1, wherein the bus bar has a notch, and the clip locking protrusion is disposed in the notch. The notch is formed to open at the center of the front edge of the portion of the bus bar that protrudes from the box body, and the clip engaging protrusion is disposed in the notch, thereby The electrical junction box according to claim 2, wherein the bus bar is disposed on both sides of the stop protrusion.

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