1. Field of the Invention
The present invention relates to auxiliary machineries composed of electrical components, such as sensors, that are installed in automobiles and the like. More specifically, the present invention relates to a connecting structure for a auxiliary machinery and a cable and a waterproofing structure for the auxiliary machinery in which the space required for mounting the auxiliary machinery and for connecting the auxiliary machinery to the cable in a wire harness interconnecting auxiliary machineries can be made smaller, and the number of component parts can be reduced. The present invention further relates to a mounting structure for the auxiliary machinery in which the size of the space required for mounting the auxiliary machinery to a member in which the auxiliary machinery is mounted (hereinafter called “receiving member”) can be reduced.
Priority is claimed on Japanese Patent Applications Nos. 2002-287407 and 2002-287408, filed Sep. 30, 2003, the content of which is incorporated herein by reference.
2. Description of the Related Art
As shown in
However, in the above-described auxiliary machinery 100, a connector 111 is required in order to connect housing 101 and cable 112. For this reason, it is necessary to ensure that there is adequate space to permit connection in the direction indicated by arrow h1 in
In addition, because auxiliary machinery 100 is mounted to receiving member 120 via fastening member 121, a space for inserting and withdrawing fastening member 121 into/out of housing 101 is required in the direction indicated by arrow h2 in
The present invention was conceived in view of the above-described circumstances and has as its objective the provision a connecting structure and a waterproofing structure for an auxiliary machinery and a cable, in which it is possible to reduce the space required for connecting the auxiliary machinery and the cable and the space required for mounting the auxiliary machinery to a receiving member, and to decrease the number of parts required for waterproofing.
It is a further objective of the present invention to provide a mounting structure for the auxiliary machinery in which the amount of the space required for disposing the auxiliary machinery to the receiving member can be reduced.
The connecting structure for auxiliary machinery and cable according to the present invention is a structure for connecting a cable in which a plurality of conductors are surrounded by an insulating covering and arrayed in a flat configuration and an auxiliary machinery that attaches directly to this cable; and characterized in that the auxiliary machinery is provided with a housing being equipped with a board on which electronic components are mounted and to which a specific circuitry pattern has been formed, a connection terminal that is connected to the circuitry pattern on the board and to at least one conductor among the conductors of the cable, and a molded part for sealing the connections between the connection terminal of the housing and the conductors of the cable; and the cable is disposed so as to extend along the outside of the auxiliary machinery.
The waterproofing structure for auxiliary machinery according to the present invention is a structure for waterproofing an auxiliary machinery that is directly connected to a cable in which a plurality of conductors are surrounded by an insulating covering and arrayed in a flat configuration; and characterized in that the auxiliary machinery is provided with a housing being equipped with a board on which electronic components are mounted and to which a specific circuitry pattern has been formed, a connection terminal that is connected to the circuitry pattern on the board and to at least one conductor among the conductors of the cable, and a molded part for sealing the connections between the connection terminal of the housing and the conductors of the cable.
In the present invention, the cable can be directly connected to the auxiliary machinery without using a connector, and is disposed so as to extend along the outside of the auxiliary machinery. As a result, it is possible to decrease the space needed for connecting the auxiliary machinery with the cable, as well as to reduce the space required for disposing the auxiliary machinery to a receiving member. In addition, in the present invention, a molded part is used to seal the connection portion between the connection terminals of the housing of the auxiliary machinery and the conductors of the cable. As a result, waterproofing components such as silicon grease or covers that were required in the conventional art are not needed in the present invention, making it possible to reduce the number of parts.
Note that it is also acceptable to directly couple the auxiliary machinery to the end of the cable, by directing the end of the cable toward the proximal end portion of the housing of the auxiliary machinery and connecting the conductors near the end of the cable to the proximal end portion of the connecting terminal along a direction that is perpendicular to the axes of the conductors; in this arrangement, the cable is installed so as to lie along the outside of the housing extending over a specific distance from the proximal end to the distal end of the housing, and such that the axes of the conductors bend in a direction perpendicular to the side of the housing. By disposing the cable in this way, it is possible to effectively prevent an increase in the space required for connecting and disposing the auxiliary machinery.
The mounting structure for auxiliary machinery according to the present invention is a structure for mounting an auxiliary machinery that is directly coupled to a cable in which a plurality of conductors are surrounded by an insulating covering and arrayed in a flat configuration to a receiving member, characterized in that: the receiving member is provided with a mounting hole for mounting the auxiliary machinery; and the auxiliary machinery is provided with a housing in which a distal end thereof can engage in the mounting hole and being equipped with a board on which electronic components are mounted and to which a specific circuitry pattern has been formed, a connection terminal which connects with the circuitry pattern on the board and with at least one of the conductors of the cable, a retainer that attaches to the distal end of the housing and the outer periphery of which engages in the mounting hole of the receiving member, and a molded part that seals the connecting portion between the connection terminal of the housing and the conductors of the cable; and wherein, the auxiliary machinery is mounted to the receiving member by attaching the retainer in the mounting hole from one side of the receiving member, and attaching the housing of the auxiliary machinery to the retainer from the other side of the receiving member.
In the present invention, the auxiliary machinery is mounted to the receiving member by attaching the retainer in the mounting hole from one side of the receiving member and attaching the housing to the retainer which has attached to the receiving member from the other side of the receiving member. As a result, it is not necessary to provide space at the auxiliary machinery housing mounting side of the receiving member, for inserting or withdrawing fastening members such as the clips that have been employed in the conventional art. Thus, the overall space needed to dispose the auxiliary machinery can be reduced.
Note that it is preferable that the retainer is provided with a collar for interlocking with the periphery of the mounting hole from the side opposed to the side in which the housing is attached, a projecting part for interlocking with the periphery of the mounting hole from the side in which the housing is attached, and an interlocking projection that interlocks with the housing.
Alternatively, it is preferable that the retainer is provided with a collar for interlocking with the periphery of the mounting hole from the side opposed to the side in which the housing is attached and an interlocking projection that interlocks with the housing. In this case, the auxiliary machinery be mounted and firmly fixed to the receiving member in a state such that the peripheries of either open side of the mounting hole are held between the collar of the retainer and the distal end of the housing after it has been mounted in the retainer.
Preferred embodiments of the present invention will now be explained with reference to the accompanying figures.
As shown in
Retainer 20 is provided with an engaging hole 22 in which retainer engaging member 15 of housing 11 engages, a collar 23 which interlocks with the periphery of a mounting hole that is formed in a panel, i.e., the receiving member here that will be explained further below, from the side opposite to the side of attachment of housing 11, and an interlocking claw 24 which interlocks with the periphery of the mounting hole on the side of attachment of housing 11 for mounting and fixing in place retainer 20 in the panel.
As shown in
Cable 2 is disposed so as to extend along the outside of sensor 1 and is connected to housing 11 of sensor 1 as shown in
In this way, cable 2 can be connected to sensor 1 by directly connecting to housing 11, without employing a connector or the like. As a result, as shown in
The tip parts 14b of connection terminal 14 pass through board 12 and are connected to a circuit (not shown) on board 12 by soldering for example, at board side connecting portion 16 which is positioned opposite side of terminal side connecting portion 17 with connection terminal 14 interposed therebetween.
In housing, the area of connection between board 12 and connection terminal 14 and the area of connection between conductor 4 and connection terminal 14 are exposed at exposed connecting portion 18 which is consisting of board side connecting portion 16 and terminal side connecting portion 17. Since waterproofing treatment is not carried out on exposed connecting portion 18, this could prove problematic depending on where sensor 1 is installed. Therefore, as shown in
This molded part 9 (9a, 9b) is formed by filling a mold with a molding resin such as a hot melt resin and then hardening it. Molded part 9 is formed in a unitary manner to conform to the shape of exposed connecting portion 18 on housing 11. By forming molded parts 9a, 9b to housing 11 in this way, it is possible to carry out a waterproofing treatment to exposed connecting portion 18, which consists of board side connecting portion 16 and terminal side connecting portion 17, without requiring silicon grease, covers, etc., as was the case in the conventional art. Moreover, the connection between pressure welded parts 14a of connection terminal 14 and conductor 4 of cable 2 at terminal side connecting portion 17 can be strongly maintained. As a result, the number of parts required for waterproofing sensor 1 can be reduced.
Note that each of the molded parts 9a, 9b in the molded part 9 in this example were formed separately. However, as shown in
The sensor 1 having this type of structure is mounted to a panel 97 as shown specifically in
Note that, as described above, exposed connecting portion 18, consisting of board side connecting portion 16 and terminal side connecting portion 17, on the proximal side of housing 11 are completely sealed by molded parts 9a, 9b (9a is omitted from the figure). As a result, moisture has no effect on board 12 or connection terminal 14. In addition, since cable 2 lies along the side of housing 11 in sensor 1 and extending a specific range from the proximal end to the distal end of the housing, and bends so as to extend along the direction of its connection to connection terminal 14, and this cable 2 is further installed so as to extend along surface 97a of panel 97, the space needed for disposing sensor 1 on panel 97 can be reduced.
In addition, sensor 1 is mounted and fixed in place on panel 97 by mounting retainer 20 in mounting hole 96 formed in panel 97, from the opposite side of attachment of housing 11, thereby mounting and fixing in place housing 11 in retainer 20. Therefore, it is not necessary to provide a space for inserting or withdrawing a fastening member such as the clips conventionally employed, to the housing 11 attachment side of panel 97. As a result, the space needed for disposing sensor 1 can be made smaller.
Note that it is also acceptable to connect cable 2 to terminal side connector 17 by connecting each of conductors 4a through 4e to pressure welded parts 14a of connection terminals 14 at intermediate areas thereof, as shown in
In addition to interlocking and fixing retainer 20 in mounting hole 96 using collar 23 and interlocking claw 24, it is also acceptable to employ other methods for mounting sensor 1 in panel 97. Namely, as shown in
Number | Date | Country | Kind |
---|---|---|---|
P2002-287407 | Sep 2002 | JP | national |
P2002-287408 | Sep 2002 | JP | national |
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