JP2013025986A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent warpage due to a difference of a thermal expansion coefficient between resin and metal.SOLUTION: The connector according to the present invention comprises: a resin connector housing 20; a flange part 23 provided in a form that it projects from an outer face of the connector housing 20, and in which an insertion hole 24 is formed in a direction crossing with a projection direction; and a metal outer cover 30 bolt-fastened to a metal frame 50 in a manner to cover the flange part 23 for holding the connector housing 20 to the frame 50. A collar part 32 entering in the insertion hole 24 is integrally formed on the outer cover 30. A bolt B is inserted in the collar part 32 and fastened to the frame 50, and therefore, the collar part 32 is kept in contact with a surface of the frame 50. The outer cover 30 is mounted and fixed to the frame 50.

Description

  The present invention relates to a connector.

  Conventionally, for example, a connector described in Patent Document 1 below is known as a connector that is bolted to a metal housing. The connector includes a resin connector housing and a plurality of metal mounting members that protrude from the connector housing and fix the connector housing. When molding the connector, one end of the mounting member protrudes into the molding space of the molding die, and the remaining portion of the mounting member is held between upper and lower molds, and then the resin is formed in the molding space. Inject. After the resin cools and hardens, the upper and lower molds are opened to remove the connector from the mold.

JP 2009-289598 A

  In the above connector, since the warpage due to the difference in thermal expansion coefficient between the resin and the metal is likely to occur, the mounting member tends to be inclined with respect to the connector housing. As a countermeasure, if the resin molding can be performed in a posture in which the mounting member is tilted in a direction opposite to the direction in which the mounting member is inclined, the mounting member can be brought close to a horizontal posture after molding. However, as long as the mounting member is sandwiched between the upper and lower molds, the mounting member has to be fixed in a horizontal posture. For this reason, it is necessary to accept that the mounting member tilts after molding.

  The present invention has been completed based on the above circumstances, and an object thereof is to prevent warping due to a difference in thermal expansion coefficient between a resin and a metal.

  The present invention provides a connector housing made of resin, a flange portion that is provided so as to project from the outer surface of the connector housing, and has an insertion hole formed in a direction intersecting the projecting direction, and covers the flange portion. It is provided with a metal outer cover that holds the connector housing to the housing by being bolted to the metal housing, and the outer cover is integrally formed with a collar portion that enters the insertion hole. It is characterized in that the collar portion is held in contact with the surface of the casing by inserting a bolt into the casing and fastened to the casing, and the outer cover is attached and fixed to the casing.

  According to such a configuration, the outer cover is attached to the housing by covering the flange portion of the connector housing with the outer cover, attaching the collar portion to the insertion hole of the flange portion, and inserting the bolt into the collar portion and tightening it to the housing. The connector housing is held by the housing. That is, since it is not necessary to integrally mold the connector housing and the outer cover, it is possible to prevent warping due to the difference in thermal expansion coefficient between the resin and the metal.

  Further, since the connector housing and the outer cover are configured separately, the connector housing is configured only with resin. Accordingly, when the warping direction of the flange portion is known in advance, the warping of the flange portion can be regulated by performing resin molding in a posture in which the flange portion is previously inclined in a direction opposite to the warping direction of the flange portion. . Even if the flange part warps, the flange part can be covered and pressed by the outer cover, and the warp of the flange part can be corrected.

The following configuration is preferable as an embodiment of the present invention.
A plurality of flange portions are arranged in the circumferential direction on the outer surface of the connector housing, and the outer cover connects a plurality of collar portions respectively provided on the plurality of flange portions and a pair of adjacent collar portions to each other. It is good also as a structure provided with the some connection part to do.
According to such a configuration, since the plurality of collar portions are connected to each other by the plurality of connecting portions, the respective color portions can be handled as one body.

The connecting portion may be provided with a reinforcing bead portion.
According to such a configuration, since the connecting portion is reinforced by the reinforcing bead portion, the rigidity of the outer cover can be increased.

It is good also as a structure by which the outer peripheral edge of an outer cover is provided with the side wall so that the outer peripheral side part of a flange part may be covered.
According to such a structure, a flange part can be protected by covering the outer peripheral side part of a flange part with the side wall of an outer cover. Moreover, the rigidity of an outer cover can be improved by providing a side wall.

  According to the present invention, it is possible to prevent warping due to a difference in thermal expansion coefficient between resin and metal.

Connector perspective view Front view of connector Rear view of connector Bottom view of connector (bottom view) Left side view of the connector Sectional view showing the connector bolted to the housing AA line sectional view in FIG. Perspective view of connector housing Front view of connector housing Perspective view of outer cover Front view of outer cover

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. The connector 10 in this embodiment has a connector housing 20 made of synthetic resin, and is fixedly attached to a metal housing 50 provided on the device side as shown in FIG. As shown in FIG. 8, the connector housing 20 has a cylindrical hood portion 21 extending in the vertical direction. Inside the hood portion 21, a plurality of tab terminals (not shown) are shown in FIG. A plurality of cavities 22 are formed. As shown in FIGS. 4 and 5, a lock portion 27 is provided on the left side surface of the hood portion 21 so as to be engaged with the mating connector. A pair of protective walls 28, 28 extending in the mating direction are provided.

  On the outer peripheral surface of the hood portion 21, a plurality of flange portions 23 are provided in a form of projecting outward in a plate shape. Each flange part 23 is each arrange | positioned at the corner | angular part of the food | hood part 21 which makes | forms a substantially square prismatic shape. Further, the flange portion 23 protrudes in a direction away from the axial center of the hood portion 21 diagonally outward. The flange portion 23 is formed with an insertion hole 24 having a shape penetrating in the plate thickness direction (direction intersecting the protruding direction of the flange portion 23). The insertion hole 24 has a circular hole shape, and the outer peripheral side portion of the flange portion 23 is formed in an arc shape along the outer shape of the insertion hole 24. Further, between the pair of adjacent flange portions 23, 23, a connecting portion 25 that connects them is provided so as to protrude from the outer surface of the connector housing 20.

  An outer cover 30 shown in FIG. 10 is attached to the flange portion 23. The outer cover 30 is made of metal, and is formed by pressing a metal flat plate. A mounting hole 31 through which the hood portion 21 is inserted is formed through the center of the outer cover 30. The outer cover 30 has a substantially square shape as a whole, and collar portions 32 are provided at corner portions thereof. A pair of adjacent collar portions 32, 32 are connected to each other via a connecting portion 33. As described above, since the plurality of collar portions 32 are connected to each other by the plurality of connecting portions 33, the respective color portions 32 can be handled as one body.

  A reinforcing bead portion 34 is formed on the connecting portion 33 by hammering. Each bead part 34 is formed in a rib shape extending in the direction connecting the collar parts 32. In this manner, since the connecting portion 33 is reinforced by the reinforcing bead portion 34, the rigidity of the outer cover 30 can be increased.

  A side wall 35 is provided around the outer peripheral edge of the outer cover 30. The side wall 35 is formed to hang downward from the outer peripheral edge of each collar portion 32 and the outer peripheral edge of each connecting portion 33, and is provided around the entire circumference of the outer cover 30. As shown in FIG. 7, the side wall 35 is disposed so as to cover the outer peripheral side portion of the flange portion 23 and the outer peripheral side portion of the connecting portion 25 from the side when the outer cover 30 is attached to the connector housing 20. Therefore, it can avoid that the flange part 23 and the connection part 25 are damaged by the external impact.

  As shown in FIG. 10, a detection receiving portion 36 configured to bulge laterally is provided in a portion of the side wall 35 disposed on the connecting portion 33. On the other hand, as shown in FIG. 3, the connecting portion 25 of the connector housing 20 is provided with a detection portion 26 that fits with the detection receiving portion 36. One detection unit 26 and one detection receiving unit 36 are provided. When the outer cover 30 is properly attached to the connector housing 20, the detection unit 26 and the detection receiving unit 36 are fitted. Further, when the outer cover 30 is attached to the connector housing 20 in an incorrect posture, the edge of the side wall 35 interferes with the detection unit 26. As a result, an erroneous assembly of the outer cover 30 and the connector housing 20 can be detected.

  As shown in FIG. 6, the collar portion 32 has a concave shape as a whole, and extends downward from the upper surface of the flange portion 23 along the inner peripheral surface of the insertion hole 24, and the axial center of the insertion hole 24 near the lower surface of the flange portion 23. It is supposed to be a form to go to. A through hole 37 through which the shaft portion B1 of the bolt B is inserted is formed in the bottom wall of the collar portion 32. Further, the side wall of the collar portion 32 has a shape that can substantially accommodate the head B2 of the bolt B, and when the bolt B is bolted to the housing 50, the head B2 of the bolt B is flanged. It does not protrude upward from the upper surface of the portion 23. Further, when the bolt B is tightened to the casing 50, the bottom wall of the collar portion 32 comes into firm contact with the casing 50 along with the tightening, but the flange portion 23 is brought into contact with the casing 50 by the upper wall of the collar portion 32. It is firmly pressed and will not break. That is, the collar portion 32 plays a role as a protective member that protects the flange portion 23 as well as serving as a metal collar that has been conventionally used for fastening parts for the purpose of metal touch.

  The present embodiment is configured as described above, and the molding method will be described subsequently. First, when both the upper and lower molds of a molding die (not shown) are closed, a molding space is formed inside the molding die, and when the resin is injected into this molding space, the connector housing 20 is molded. When the resin cools and hardens, the upper and lower molds are opened and the connector housing 20 is removed. Next, the outer cover 30 is attached to the connector housing 20. When the hood portion 21 is inserted into the mounting hole 31 and the flange portion 23 is covered from above and from the side by the collar portion 32, the connecting portion 25 is covered from above and from the side by the connecting portion 33.

  After the connector 10 is formed in this manner, the bolt B is also inserted into the through hole 37 and tightened into the screw hole of the housing 50, so that the bottom wall of the collar portion 32 becomes the periphery of the screw hole and the head of the bolt B. It is sandwiched with B2 by metal touch. As a result, the outer cover 30 is attached and fixed to the housing 50, and the connector 10 is held by the housing 50. Here, even if the flange portion 23 is formed in a posture inclined with respect to the hood portion 21, the flange portion 23 can be pressed by the outer cover 30, so that the flange portion 23 can be corrected to a horizontal posture. .

  As described above, in the present embodiment, since the flange portion 23 and the outer cover 30 are formed separately, warping caused by the difference in thermal expansion coefficient between the resin and the metal can be regulated. Further, since the collar portion 32 is provided on the outer cover 30, the collar portion 32 is fastened to the housing 50 with a bolt B, so that the connector housing 20 can also function as a collar for holding the housing 50. Furthermore, since the side wall 35 is formed on the outer peripheral edge of the collar portion 32 and the outer peripheral edge of the connecting portion 33, the collar portion 32 and the connecting portion 33 can be protected by the side wall 35.

  Further, since the plurality of collar portions 32 are connected by the connecting portion 33, the plurality of collar portions 32 can be handled integrally. Further, since the reinforcing bead portion 34 is provided in the connecting portion 33, the rigidity of the connecting portion 33 can be increased. Accordingly, even when the flange portion 23 is warped, the outer cover 30 can be used as a correction member that presses the flange portion 23 with the outer cover 30 to correct the horizontal posture.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the outer cover 30 including the plurality of collar portions 32 is illustrated in the above embodiment, according to the present invention, the outer cover may include only one collar portion.

  (2) Although the plurality of collar portions 32 are connected to each other by the plurality of connecting portions 33 in the above embodiment, according to the present invention, each color portion 32 may be configured separately.

  (3) Although the outer cover 30 provided with both the bead part 34 and the side wall 35 is illustrated in the above embodiment, according to the present invention, the outer cover may be provided with either the bead part or the side wall, or the bead part. It is good also as an outer cover which is not provided with any of a side wall.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Connector housing 23 ... Flange part 24 ... Insertion hole 30 ... Outer cover 32 ... Collar part 33 ... Connection part 34 ... Bead part 35 ... Side wall 50 ... Case B ... Bolt

Claims (4)

A resin connector housing;
Provided in a form protruding from the outer surface of this connector housing, a flange portion formed with an insertion hole in a direction intersecting with the protruding direction,
A metal outer cover that holds the connector housing to the housing by being bolted to the metal housing so as to cover the flange portion;
The outer cover is integrally formed with a collar portion that enters the insertion hole, and the collar portion is in contact with the surface of the housing by inserting a bolt into the collar portion and fastening to the housing. And the outer cover is fixedly attached to the housing.   A plurality of flange portions are arranged in the circumferential direction on the outer surface of the connector housing, and the outer cover includes a plurality of collar portions respectively provided on the plurality of flange portions and a pair of adjacent collar portions. The connector according to claim 1, comprising a plurality of connecting portions that connect the two to each other.   The connector according to claim 2, wherein the connecting portion is provided with a reinforcing bead portion.   The connector according to any one of claims 1 to 3, wherein a side wall is provided on an outer peripheral edge of the outer cover so as to cover an outer peripheral side portion of the flange portion.

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