JP4278556B2 - Connector mating structure - Google Patents

Description

  The present invention relates to a connector fitting structure in which a connector is fitted from the front side of a panel to a connector of an electrical connection box disposed behind the panel.

  There is a method of fitting a connector by fastening a bracket holding one connector to a member on the mating connector side with a bolt. This method is effective when it is difficult to directly fit the connector to the mating connector by hand.

  For example, when a connector is fitted to the mating connector at the back of the panel from the front side of the panel, it is different if there is a large opening in the panel. Since the hand cannot be inserted, a method of fastening the bracket with a bolt and fitting it may be used.

  This method is also effective when all connectors are fitted together in a narrow place where many connectors are concentrated.

In this case, for example, by placing a bracket (holding plate) having a notch corresponding to each connector on the connector and fastening the bracket to the member on the mating connector side with a bolt, The connector is collectively fitted to the mating connector (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-332018

  By the way, in the conventional connector fitting method described above, if necessary, it is normal to add a waterproof seal to each connector individually. For example, an electrical connection box at the back of the connector is provided via a dash panel. When a connector is fitted to the connector from the front side of the dash panel, it is not sufficient to provide a waterproof seal between the connectors. That is, since there is an opening for inserting a connector in the dash panel and there is a bolt insertion hole, some countermeasure is required.

  In view of the above circumstances, an object of the present invention is to provide a connector fitting structure capable of simultaneously mounting a grommet for a seal that reliably closes an opening and a hole on a panel together with the fitting of the connector. To do.

  The invention of claim 1 is a connector fitting structure in which a second connector is fitted to the first connector of the electrical junction box disposed behind the panel from the front side of the panel through the opening of the panel, A bolt insertion hole is provided in the panel, and a bracket having a cylindrical body that fits in the opening of the panel and a flange that overlaps the front surface of the panel is disposed on the front side of the panel, and the panel bolt insertion is provided in the flange of the bracket. A bolt insertion hole corresponding to the hole is provided, the second connector is attached to the tip of the cylindrical body of the bracket, a cable connected to the second connector is drawn out through the cylindrical body, and further, A first seal portion that seals a gap between the cylinder and the opening when the cylinder is fitted in the opening of the panel, and a bolt insertion hole in the bracket and the panel. A grommet having at least a second seal portion that seals the gap between the bolt and the bolt insertion hole when passing the cable and a third seal portion that seals the gap between the cable and the cylindrical body, The flange is overlaid on the front of the panel, and the second connector attached to the tip of the cylinder is made to face the first connector of the electrical junction box through the opening of the panel. By fastening the bracket and the electric junction box with the bolts passed, the first and second connectors are fitted together, the flange of the bracket is brought into close contact with the front surface of the panel via the grommet, and the grommet The first and second seal portions are respectively inserted into the opening of the panel and the bolt insertion hole.

  The invention according to claim 2 is the connector fitting structure according to claim 1, wherein the bolt is a stud bolt protruding from the electrical connection box through the bolt insertion hole of the panel to the front side of the panel. The bracket and the electrical junction box are fastened by screwing a nut from the top of the bracket to the tip of the bolt after passing through the bolt insertion hole of the bracket. To do.

  The invention according to claim 3 is the connector fitting structure according to claim 1, wherein the bolt is inserted from above the bracket and the tip is screwed into the electrical connection box, thereby electrically connecting the bracket and the electrical connection box. It is characterized by being fastened with a box.

  Invention of Claim 4 is the fitting structure of the connector in any one of Claims 1-3, Comprising: All the opening and bolt insertion hole of the said panel are enclosed in the surface facing the front surface of the panel of the said grommet. An annular rib having a size is protruded.

A fifth aspect of the present invention is the connector fitting structure according to any one of the first to fourth aspects, wherein an annular rib closely contacting the outer periphery of the bolt is provided on the inner periphery of the second seal portion. It is characterized by that.

  The invention of claim 6 is the connector fitting structure according to any one of claims 1 to 5, wherein the diameter of the bolt insertion hole of the bracket is more than a dimensional tolerance with respect to the outer diameter of the bolt. And a washer larger than the bolt insertion hole is sandwiched between contact surfaces of the bracket and the head of the bolt or a nut screwed into the bolt.

  According to the first aspect of the present invention, the bracket can be fastened to the electrical connection box behind the panel with the bolt, so that the connector can be fitted and the necessary portion can be sealed with the grommet. Therefore, the waterproofness of the panel surface can be ensured.

  According to the second aspect of the present invention, since the bracket and the electric junction box are fastened using the stud bolt protruding from the panel, when the bracket is attached, the alignment between the bolt insertion hole of the bracket and the tip of the bolt is performed. Is easy, and there is no hassle to search for bolt holes.

  According to the invention of claim 3, since the bolt is inserted from above the bracket, only the head of the bolt is present on the bracket, and the tip of the stud bolt is provided as in the invention of claim 3. Does not protrude above the bracket.

  According to invention of Claim 4, since the annular rib of the magnitude | size which encloses the opening and bolt insertion hole of a panel was protruded in the opposing surface with respect to the panel of a grommet, reliable sealing performance can be exhibited.

  According to the invention of claim 5, since the annular rib closely contacting the outer periphery of the bolt is protruded from the grommet, the sealing of the bolt insertion hole can be ensured.

  According to the sixth aspect of the present invention, it is possible to ensure dimensional attachment by absorbing dimensional errors.

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

  FIG. 1 is a sectional view showing a state before fitting of the connector fitting structure of the first embodiment, and FIG. 2 is a sectional view showing the fitting state.

  This connector fitting structure is formed from the front side of the panel 20 to the first connector (female connector in the figure) 12A of the electrical connection box 10 disposed behind the panel (here, a dash panel is assumed) 20. The second connector (male connector in the figure) 12B is fitted through the opening 22.

  The panel 20 is provided with a bolt insertion hole 23 together with an opening 22 for inserting the second connector 12B, and is formed into a stud bolt by tightening a screw portion 31 at one end into the screw hole 13 of the electrical connection box 10. A tip screw portion 32 of the bolt 30 projects from the bolt insertion hole 23 of the panel 20 to the front side of the panel 20. In the bolt insertion hole 23 of the panel 20, a smooth bolt outer peripheral surface where the screw portion 32 is not formed is located.

  The first connector 12 </ b> A is arranged with the fitting port facing the opening 22 of the panel 20 within a range surrounded by the bolts 30. Here, the inner surfaces of the housings of the first and second connectors 12A and 12B are configured with inclined surfaces to facilitate fitting.

  The second connector 12B is attached to a bracket 50 disposed on the front side of the panel 20. The bracket 50 includes a cylindrical body 51 that fits in the opening 22 of the panel 20 and a flange 52 that overlaps the front surface of the panel 20, and integrally includes a rubber grommet 60 that is outsert molded.

  A bolt insertion hole 53 corresponding to the bolt insertion hole 23 of the panel 20 is provided in the flange 52 of the bracket 50. The second connector 12B is attached to the tip of the cylindrical body 51 of the bracket 50, and the cable 18 connected to the second connector 12B is drawn outside through the inside of the cylindrical body 51.

  The grommets 60 are provided on the entire front surface and the rear surface of the flange 52 of the bracket 50.

  The grommet 61 on the front side of the flange 53 has a cylindrical first seal portion 62 that is in close contact with the outer periphery of the cylindrical body 51. Further, a bolt insertion through hole 63 is provided at the position of the bolt insertion hole 53, and a cylindrical second seal portion 63 a is provided at the periphery of the through hole 63.

  The first seal portion 62 is a portion that seals the gap between the cylinder 51 and the opening 22 when the cylinder 51 is fitted into the opening 22 of the panel 20. The second seal portion 63 a is a portion that seals a gap between the bolt 30 and the bolt insertion hole 53 when the bolt 30 is passed through the bolt insertion holes 53 and 23 of the bracket 50 and the panel 20.

In addition, an annular rib 63b that is in close contact with the outer periphery of the bolt 30 protrudes from the inner periphery of the through hole 63 in which the second seal portion 63a is formed. In addition, an annular rib 64 having a size that surrounds all of the opening 22 and the bolt insertion hole 23 of the panel 20 is protruded from the grommet 61 on the front surface side of the flange 53 facing the front surface of the panel 20.

  In addition, the grommet 66 on the rear surface side of the flange 53 is provided with a notch 68 around the bolt insertion hole 53 and seals the gap between the cable 18 and the cylinder 51 in a portion covering the rear end opening of the cylinder 51. A third seal portion 67 is provided.

  And the 2nd connector 12B is fitted by the 1st connector 12A in the back of the panel 20 using the bracket 50 of such a structure. In order to obtain this fitting structure, first, the flange 52 of the bracket 50 is overlapped on the front surface of the panel 20, and the second connector 12 </ b> B attached to the tip of the cylinder body 51 is passed through the opening 22 of the panel 20. The bolt insertion hole 53 of the bracket 50 is fitted to the tip of the bolt 30 that faces the first connector 12A and protrudes to the front side of the panel 20.

  Next, the distance between the bracket 50 and the electrical junction box 10 is reduced by screwing the nut 35 into the tip threaded portion 32 of the bolt 30 and tightening it, whereby the first and second connectors 12A, 12B are fitted together, and the flange 52 of the bracket 50 is brought into close contact with the front surface of the panel 20 through the grommet 60. Further, the first and second seal portions 62 and 63a of the grommet 60 are inserted into the opening 22 of the panel 20 and the bolt insertion hole 23 of the panel 20, respectively. Thus, the fitting structure shown in FIG. 2 is completed.

  Thus, by fastening the bracket 50 to the electrical junction box 10 behind the panel 20 with the bolts 30, the connectors 12A and 12B can be fitted, and the grommet 60 can seal a necessary portion. . Accordingly, the waterproofness of the surface of the panel 20 can be kept high while the opening 22 and the bolt insertion hole 23 are present. In this embodiment, since the bracket 50 and the electrical connection box 10 are fastened using the stud bolt 30 protruding from the panel 20, the bolt insertion hole 53 of the bracket 50 and the bracket 50 are attached when the bracket 50 is attached. Position alignment with the tip of bolt 30 can be performed easily. Therefore, the troublesome search for the bolt hole is unnecessary, and the workability is good.

  Further, since an annular rib 64 having a size surrounding the opening 22 and the bolt insertion hole 23 of the panel 20 is provided on the face of the grommet 60 facing the panel (the grommet 61 on the front side of the flange 52), a reliable seal is provided. Performance can be demonstrated. Further, since the annular rib 63b that is in close contact with the outer periphery of the bolt 30 protrudes from the inner periphery of the bolt insertion through hole 63 of the grommet 60, the sealing of the bolt insertion hole 53 can be ensured.

  In consideration of dimensional errors at the time of manufacture, as shown in FIG. 3, if the diameters of the bolt insertion holes 23 and 53 of the panel 20 and the bracket 50 are maximized, the mounting can be made easier. Secure installation while absorbing errors can be guaranteed. In that case, a washer 36 larger than the bolt insertion hole 53 may be sandwiched between the contact surfaces of the bracket 50 and the nut 35.

  Moreover, as shown in FIG. 4, you may attach later, without making the bolt 30 into a stud bolt. In that case, the bracket 30 and the electrical junction box 10 are fastened by inserting the bolt 30 from above the bracket 50 and screwing the tip into the screw hole 13 of the electrical junction box 10. In this way, only the head of the bolt 30 is present on the bracket 50, and the tip of the bolt 30 that is a stud bolt as in the above-described embodiment does not protrude above the bracket 50. Therefore, the protruding portion does not interfere with the work.

It is sectional drawing which shows the state before the fitting of the connector fitting structure of embodiment of this invention. It is sectional drawing which shows the fitting state of the connector fitting structure of embodiment of this invention. It is sectional drawing of other embodiment of this invention. It is sectional drawing of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electrical connection box 12A 1st connector 12B 2nd connector 18 Cable 20 Panel 22 Opening 23 Bolt insertion hole 30 Bolt 35 Nut 36 Washer 50 Bracket 51 Cylindrical body 52 Flange 53 Bolt insertion hole 60 Grommet 62 1st seal part 63a 2nd seal Part 63b Annular rib 64 Annular rib 67 Third seal part

Claims (6)

A connector fitting structure in which the second connector is fitted to the first connector of the electrical junction box disposed behind the panel from the front side of the panel through the opening of the panel,
A bolt insertion hole is provided in the panel, and a bracket having a cylindrical body that fits in the opening of the panel and a flange that overlaps the front surface of the panel is disposed on the front side of the panel,
A bolt insertion hole corresponding to the bolt insertion hole of the panel is provided in the flange of the bracket, the second connector is attached to the tip of the cylindrical body of the bracket, and a cable connected to the second connector is passed through the cylindrical body. Pull it out,
Furthermore, a first seal portion that seals a gap between the cylinder and the opening when the cylinder is fitted into the opening of the panel in the bracket; a bolt when the bolt is passed through the bolt insertion hole of the bracket and the panel; A grommet having at least a second seal portion that seals a gap between the bolt insertion holes and a third seal portion that seals a gap between the cable and the cylindrical body;
The flange of the bracket is overlaid on the front surface of the panel, and the second connector attached to the tip of the cylindrical body is made to face the first connector of the electrical junction box through the opening of the panel. By fastening the bracket and the electrical junction box with bolts that pass through the insertion holes, the first and second connectors are fitted to each other, the flange of the bracket is brought into close contact with the front surface of the panel via the grommet, and The connector fitting structure, wherein the first and second seal portions of the grommet are inserted into the opening of the panel and the bolt insertion hole, respectively. The connector fitting structure according to claim 1,
The bolt is configured as a stud bolt that protrudes from the electrical junction box through the bolt insertion hole of the panel to the front side of the panel, and passes through the bolt insertion hole of the bracket. A fitting structure for a connector, wherein the bracket and the electrical connection box are fastened by screwing a nut to the tip of the bolt. The connector fitting structure according to claim 1,
The connector fitting structure, wherein the bolt is inserted from above the bracket and the tip of the bolt is screwed into the electrical connection box, thereby fastening the bracket and the electrical connection box. The connector fitting structure according to any one of claims 1 to 3,
A connector fitting structure, wherein an annular rib having a size surrounding all of the opening of the panel and the bolt insertion hole is provided on a surface of the grommet facing the front surface of the panel. The connector fitting structure according to any one of claims 1 to 4,
A connector fitting structure, wherein an annular rib that is in close contact with the outer periphery of the bolt protrudes from the inner periphery of the second seal portion. The connector fitting structure according to any one of claims 1 to 5,
The diameter of the bolt insertion hole of the bracket is formed to have a dimension having a margin more than the dimensional tolerance with respect to the outer diameter of the bolt, and between the contact surface of the bracket and the nut screwed to the bolt head or the bolt A connector fitting structure, wherein a washer larger than the bolt insertion hole is sandwiched between the two.

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