Electrical connection box

Abstract: There is provided an electrical connection box (11) configured to be smaller in size on which electrical components and an electronic control device are mounted such that production costs are reduced. A plurality of electrical component housing areas (12) is provided on a surface of one side on an electric connection box. An electrical component is adapted to be mounted on the electrical component housing areas. A male type connector (14) for mounting an electronic control device (13) is provided on a surface of the electrical connection box. The electronic control device (13) is connected with the electric connection box by connecting the male type connector (14) with a female type connector (15) provided in the electronic control device. The electronic control device (13) is mounted off to an outer side of the electric connection box, and a supporting plate (16) which supports an area of the electronic control device is cantilevered from, or shifted off to the outer side of, the electronic control device. Additionally, fastening elements (32, 33) are provided on at least one of the electrical connection box and the electronic control device.

Description: The present invention relates to an electrical connection box to be mounted with electrical components and an electronic control device on the surface of one side thereof. Conventionally, an electrical connection box installed in an automobile engine compartment, such as the structure shown in Fig. 6, has been known. This electrical connection box 51 houses an electric circuit which is not illustrated herein. In addition, on the surface of one side on the electrical connection box 51, a plurality (9 pieces) of electrical component housing areas 52 is provided. By mounting here electrical components such as fuses, relays, etc., that are not illustrated here, the electrical components can be electrically connected with the above-mentioned electric circuit. Furthermore, on one side of the above-mentioned election connection box 51 an electronic control device 53 is mounted, and is electrically connected with the above-mentioned electric circuit through a connection area 55. The electronic control device 53 performs a certain control by receiving power from the electric circuit based on the output sent from this electric circuit other than the power source. In the structure thus provided with the electronic control device 53 on the surface of one side on such an electrical connection box 51, a plurality of electrical component housing areas 52 (electrical components) is provided with a necessary number of areas (in this case, 9 pieces) at a position where a space 54 occupied by the electronic control device 53 is excluded, as shown in Fig. 6. Therefore, a connection area 55 where the electronic control device 53 is electrically connected with the above-mentioned electric circuit only occupies a portion of the occupied area 54. However, the surface of one side on the electric connection box 51 had to be widened due to the occupied area 54. Therefore, the electric connection box 51 had to be made larger in scale, making it necessary to increase the production costs. DE-A- 44 29 294, showing the features of the preamble of claim 1, discloses an electrical control installation with circuit board for a motor vehicle, comprising a first housing having mounted thereon electrical components and a second housing containing a circuit board. A plug on one side of the first housing is connectable with a socket on the second housing to join the two housings together and form electrical contacts between the housings. EP-A- 0 135 910 discloses a central current distributor for wiring of a motor vehicle. The distributor consists of insulating carrier plates which receive plug contacts connected to electrical wiring, from below, and into which electrical components are inserted, from above, to form electrical contacts between the plug contacts and the electrical components. The carrier plates are of different shapes and fit together within a rectangular box in a manner of a jigsaw. The present invention was made in view of the above circumstances, and the object of the present invention is to reduce the size of an electric connection box on which electrical components and an electric control device are mounted, thereby reducing production costs. In order to achieve the above object, the present invention provides an electrical connection box configured to mount electrical components on a surface thereof and comprising, a mounting structure to mount an electronic control device characterised in that the mounting structure is arranged to mount the electronic control device on the same surface of the electrical connection box on which the electrical components are mounted with an area of the electronic control device shifted off the surface of the electrical connection box such that the shifted area of the electronic control device is positioned off to one side of the electrical connection box. In one arrangement, the mounting structure comprises, a supporting plate provided on one side of the electrical connection box which supports the shifted area of the electronic control device positioned off to one side of the electrical connection box. Preferably the mounting structure further comprises at least one fastening member for fastening the electronic control device to the supporting plate. In another arrangement, the mounting structure comprises at least one fastening member to fasten the electronic control device the surface of the electrical connection box in a cantilever fashion, without an above-mentioned supporting plate therebelow. Fig. 1 is an exploded perspective view showing a first embodiment of the electrical connection box of the present invention. Fig. 2 is a perspective view showing the first embodiment of the present invention. Fig. 3 is a plan view showing the first embodiment. Fig. 4 is an exploded perspective view showing a second embodiment of an electrical connection box according to the present invention. Fig. 5 is a perspective view showing the second embodiment of the present invention. Fig. 6 is a plan view showing a conventional electrical connection box. Description follows of a first embodiment of the present invention which is embodied in an electrical connection box to be provided, for example, in an automobile engine compartment. The electrical connection box 11 houses therein an electric circuit, which is not illustrated herein. On the upper surface of the electrical connection box 11, a plurality (9 pieces in the present embodiment) of electrical component housing areas 12 are provided. By mounting on the electrical component housing areas 12, a fuse relay, and other suitable electrical components which are not illustrated, the electrical components are electrically connected with the above-mentioned electrical circuit. On the electrical connection box 11 in the first embodiment, a supporting plate 16 which protrudes from an outer side of the electrical connection box 11 is unitarily formed therewith. A total of four sets of interfit elements 31, as one form of fastening members, are formed on the surface of supporting plate 16 on the electrical connection box 11. As seen in Figs. 1-3, interfit elements 31 project upwardly from the upper surface of the electrical connection box 11 and from the upper surface of supporting plate 16 a sufficient distance to retain the electronic control device 13. The interfit elements 31 may be formed unitarily with the respective electrical connection box 11 and supporting surface 16, or they may be separately formed and attached thereto in any conventional manner. Although interfit elements 31 are depicted in Fig. 2 to extend to the same level as the upper surface of the electronic control device 13, the interfit elements may extend above or below the upper surface of the electronic control device 13. Also, although four such interfit elements are depicted in Figs.1-3, any desired number of interfit elements 31 may be provided. Furthermore, the inner surfaces of the interfit elements 31 are configured to have a complementary shape with the corners of the electronic control device 13 and to fit snugly therewith as seen in Figs 2 and 3, and while the inner surfaces of interfit elements 31 and corners of the electronic control device 13 are shown to have complementary curved surfaces, the complementary surfaces may take any shape, for example right-angle shaped. Additionally, the inner surfaces of the interfit elements 31 may include downwardly and inwardly (toward the center of the supporting plate 16) tapered surfaces such that a wedging of the electronic control device takes place during installation thereof. Alternatively, the downward tapering surfaces for providing the wedging action may be provided on the electronic control device 13 or on both the interfit elements 31 and on the electronic control device 13. Moreover, the fit between the interfit elements 31 and the electronic control device 13 can vary. For example, the fit may be tight at the bottom and loose at the top, or vice versa. Furthermore, on one side of the electrical connection box 11, a male connector 14 having a plurality of terminals is provided which is configured to cooperate with a corresponding female connector 15 on the electronic control device. Also, in the embodiment of the electronic control device 13 depicted in Fig. 1, a female connector 15 to be connected in accordance with the male connector 14 is provided. The cooperating connectors 14, 15 have been depicted in Fig. 1 as having a generally oval shape, but they may have any desired shape. Moreover, although only one set of cooperating connectors 14, 15 is depicted in Fig. 1, any desired number of sets of cooperating connectors may be provided. Of course, the female connector 15 can alternatively be provided on electrical connection box 11, with the male connector 14 provided on the electronic control device. In addition, on the surface of two opposite sides of the supporting plate 16, a securing hook 32 which protrudes towards the outer side is provided (only one of which can be seen in Fig. 1). On the electronic control device 13 to be mounted on the surface of one side on the electrical connection box 11, a pair of securing elements 33, which cooperate with the securing hooks 32, are provided. In the present case, the securing hooks 32 and the securing elements 33 are formed as one of the fastening members. However, any suitable fastening member for retaining the electronic control device 13 on the supporting surface 16 may be utilized. With the structure thus described, in mounting the electronic control device 13 on the electrical connection box 11, the electronic control device 13 is fastened onto the surface of one side on the electrical connection box 11, with four corners of the electronic control device 13 interfitting with the interfit elements 31, and with both the securing hooks 32 and the securing elements 33 engaged. In addition, with the male connector 14 and the female connector 15 connected, the side mounted electronic control device 13 obtains an electric power source from the above-mentioned electric circuit, thus carrying out a certain control based on a signal outputted from the electric circuit different from the power supply. With the first embodiment, the electronic control device 13 is mounted off to the outer side of the electrical connection box 11, and an area shifted off to the outer side of the electronic control device 13 is supported by the supporting plate 16. Therefore, as shown in Fig. 3, the area 19 occupied by the electronic control device 13 on the upper surface of the electrical connection box 11 is reduced, as compared with the prior art device depicted in Fig. 6. From the above, the following results are obtained based on the first embodiment of the present invention: (1) By decreasing the area 19 occupied by the electronic control device 13 on the upper surface of the electrical connection box 11, the upper surface of the electrical connection box 11 can be made narrower, thereby permitting the electric connection box to be made smaller in size and thus reducing the cost. (2) The area of the electronic control device 13 shifted off to the outer side can be supported by an extremely simple structure. In addition, in mounting the electronic control device 13 on the electrical connection box 11, the electronic control device 13 can be fastened onto the surface of one of the electrical connection box 11 by interfitting four corners of the electronic control device 13 onto the interfit elements 31 and by connecting the securing hooks 32 and the securing elements 33 formed on the electronic control device 13. Because the electronic control device 13 can be supported in such a stabilized condition, any damage to the connectors 14 and 15 resulting from shaking or vibration of the electronic control device 13 can be avoided. The present embodiment is not limited to the above areas alone, but various modifications are also contemplated. For example, although the supporting plate 16 of the first embodiment is provided on the electrical connection box 11 in a unitary manner, the supporting plate 16 may be provided as a separate unit connected to the electrical connection box 11. With the present embodiment, although a pair of securing hooks 32 and securing elements 33 for securing the interfit elements 31 interfitting with the four corners of the electronic control device 13 and the electrical connection box 11 was provided, at least one of the pairs of securing hooks 32 and securing elements 33, and/or at least one of the interfit elements 31, may be omitted. Description follows below of a second embodiment of the present invention of an electrical connection box provided, for example, in engine compartments of automobiles, with reference to Fig. 4 and Fig. 5. In this case, for the elements which are common to the above-mentioned first embodiment, the common elements have been given the same reference characters, but further description has been omitted. With the present embodiment, in the same manner as the case of the above-mentioned first embodiment, an electronic control device 23 is mounted off to an outer side of an electric connection box 21. However, in place of the above-mentioned supporting plate 16, interfit elements 31, and peripheral structure, a pair of bolts 24 for securing an electronic control device 23 onto the surface of one side on the electrical connection box 21 is provided, which is different from the above-mentioned first embodiment. On the surface of one side on the electrical connection box 21, bolt receiving holes 22 are provided for receiving the bolts 24. The holes 22 may be threaded, or formed in any suitable manner to securely receive the threads of the bolts 24. In addition, on the control device 23, bolt through-holes 25 for inserting the bolts 24 are provided. The bolts 24 are tightened onto the holes 22 through the bolt through-holes 25. In this way, the electronic control device 23 is firmly fastened on the surface of one side on the above-mentioned electrical connection box 21. Although two bolts 24 have been depicted in this embodiment, any suitable number may be used. As mentioned above in detail, according to the second embodiment, the results mentioned below can be obtained in addition to the same results as in cases (1) and (2) in the above-mentioned first embodiment. That is, with use of bolts 24 which have an extremely simple structure, the electronic control device 23 can be firmly fastened to the electric connection box 21. In this case, the present embodiment is not limited to the scope of the description mentioned above, but may be modified as follows. With the present embodiment, the electronic control device 23 is fastened onto the electric connection box 21 by the bolts 24. However, the invention may be carried out, for instance, by using other fastening members such as pins or the like. Furthermore, although two bolts 24 have been illustrated in this embodiment, any suitable number of bolts 24, or other fastening elements, may be used, and the bolts and pins can be used in any suitable combination. As elements which can be modified common to the respective embodiments as above-mentioned, some are described hereafter. With each of the embodiments mentioned above, a structure provided with nine electrical component housing areas 12 was shown. However, this is only one example, and the electrical connection box may be provided with any desired number of electrical component housing areas in accordance with the electric circuit employed. With the embodiments mentioned above, a structure provided with only one electronic control device 13 or 23 has been shown. However, a plurality of such devices may be provided. And, at least one set of electronic control devices may be provided off to the side of an electric connection box. An electronic control device 13 or 23 can be shifted off to the outer side of electric connecting box 11 or 21, and it is not always necessary to support the electronic control device 13 or 23 with the above-mentioned supporting plate 16 or to fasten it with the above-mentioned bolts 24. The technical concept other than the claims that can be obtained from the above-mentioned embodiments follows below together with the results obtainable therefrom: With the electric connection box according to one aspect of the present invention, the electronic control box is provided to the electrical connection box by use of bolts. According to this structure, by use of a bolt structure which is extremely simple, the electronic control device can be fastened to the electrical connection box. According to another aspect of the present invention as set forth herein, an electrical connection box can be made smaller in size, thereby making it possible to reduce production costs. Furthermore, with the invention as set forth in the second embodiment of the present invention, a supporting plate is provided, which structure is extremely simple and can support an area shifted off to the outer side of the electronic control device. Because the electronic control device is supported in a stable condition, any damage can be avoided to, for example, the electric connection area between the electrical connection box and the electronic control device resulting from shaking or vibration of the electronic control device. With the present invention, the electronic control device can be firmly fastened to the electrical connection box by fastening members. Therefore, any damage to the connection between the electrical connection box and the electronic control device resulting from shaking or vibration of the electronic control device can be avoided. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein; rather, the invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.

Claims: An electrical connection box (11, 21) configured to mount electrical components on a surface thereof and comprising a mounting structure (16, 24) to mount an electronic control device (13, 23), characterised in that the mounting structure (16, 24) is arranged to mount the electronic control device (13, 23) on the same surface of the electrical connection box (11, 21) on which the electrical components are mounted with an area of the electronic control device (13, 23) shifted off the surface of the electrical connection box (11, 21) such that the shifted area of the electronic control device (13, 23) is positioned off to one side of the electrical connection box (11, 21). An electric connection box (11) as set forth in claim 1, characterised in that said mounting structure (16) comprises a supporting plate (16) provided to said one side of said electrical connection box (11) for supporting the shifted area of the electronic control device (13). An electric connection box (11) as set forth in claim 2, characterised in that said mounting structure (16) further comprises at least one fastening member (32, 33) provided to fasten the electronic control device (13) to said supporting plate (16). An electric connection box (11) as set forth in claim 3, characterised in that the at least one fastening member (32, 33) comprises securing hooks (32) on the surface of two opposite sides of the supporting plate (16) protruding towards the outer side and a pair of securing elements (33) on the electronic control device (13), the securing hooks (32) and securing elements (33) being arranged to co-operate with each other to fasten the electronic control device (13) to the support plate (16). A electrical connection box (11) as set fourth in any one of claims 2 to 4, characterised in that interfit elements (31) project from the supporting plate (16) and are arranged for retaining the electronic control device (13) in position on the supporting plate (16). An electric connection box (21) as set forth in claim 1, characterised in that said mounting structure (24) comprises at least one fastening member (24) provided to fasten the electronic control device (23) to said electrical connection box (21). An electrical connection box (21) as set forth in claim 6, characterised in that the at least one fastening member (24) comprises a pair of bolts (24) that extend through bolt through-holes (25) in the electronic control device (23) to be engagable with a threaded hole (22) in the electrical connection box (21) to fasten the electronic control device (23) to the connection box (21). An electrical connection box (21) as set forth in claim 6 or claim 7, characterised in that the electronic control device (23) is mounted by the at least one fastening member (24) to the surface of the connection box (21) in cantilever fashion.

Inventors: OKA YOSHITO, OKA, YOSHITO, Oka, Yoshito, c/o Sumitomo Wiring Systems Ltd
Applicants: SUMITOMO WIRING SYSTEMS, SUMITOMO WIRING SYSTEMS, LTD.
Application year: 1999
Main classification: B60R16
IPC codes: B60R16, H02G3