JP2010021052A - Seal structure of connector, and packing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal structure of a connector which can suppress an effect that is given to electric contact owing to looseness arising between a male connector and a female connector. <P>SOLUTION: When a packing 3 inserted into a terminal housing part 11 of a female connector 1 is pinched by a contact part 11b and a pinching part 23 in front and rear direction, a waterproof part 31 made of rubber is compressed in the front and rear direction and elastically deformed, and is widened as a whole in the up and down and right and left direction. By a spring force caused by the waterproof part 31 elastically deformed, a locking hole 12c and an insertion part 21b are firmly locked, and the positioning in front and rear direction of the female connector 1 and the male connector 2 is carried out. Furthermore, the waterproof part 31 widened in the up and down and the right and left direction is strongly pinched by the terminal housing part 11 and the insertion part 21, thereby, the positioning also in the up and down direction and the right and left direction of the female connector 1 and the male connector 2 is carried out through the terminal housing part 11 and the insertion part 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seal structure for a connector that seals by fitting a female connector to a male connector via a packing, and a packing used for the seal structure.

  The connector sealing method is disclosed in Patent Document 1 and Patent Document 2 below. In the female connector described in Patent Document 1, a synthetic resin retainer is externally fitted to an outer peripheral portion of a terminal insertion portion provided in a housing. The retainer is provided with a rubber seal member. The seal member is interposed between the housing of the male connector fitted on the terminal insertion portion and the terminal insertion portion to perform sealing. In the female connector described in Patent Document 2, the male connector is accommodated in the hood of the female housing, the seal portion of the end plug is press-fitted into the seal recess provided around the hood, the opening portion of the hood is covered, and the seal is sealed. is doing.

JP-A-7-30471 Japanese Utility Model Publication No. 4-24276

  In the connector, the electrical contact may be deteriorated due to the backlash generated between the male connector and the female connector. In particular, in an environment where vibration is likely to occur due to being mounted on an automobile, the electrical contact between both connectors is likely to deteriorate due to resonance. However, with the sealing methods described in the above-mentioned patent documents, vibration can not be sufficiently suppressed even though sealing can be performed.

  This invention is made | formed in view of such a subject, and it aims at providing the sealing structure and packing of a connector which can solve the said subject.

In order to achieve such an object, the connector sealing structure of the present invention is a connector sealing structure in which a female connector is externally or internally fitted to a male connector via a packing, and sealing is performed. In addition, the packing is sandwiched between the male connector and the female connector by sandwiching the packing in the insertion / removal direction between the female connector and the female connector.
Further, according to the present invention, the rubber is positioned on one side in the clamping direction by the male connector and the female connector, and is pressed from one of the male connector and the female connector, and the rubber portion And a resin portion that is positioned on the other side in the clamping direction of the male connector and the female connector and is pressed from the other male connector or the female connector.

  According to the present invention, the packing sandwiched between the female connector and the male connector sandwiched between the female connector and the male connector is sufficiently elastically deformed to position the female connector and the male connector. It is possible to suppress the influence of the play generated between the female connector and the male connector on the electrical contact between the female connector and the female connector.

Hereinafter, the best mode of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view from above of the female connector 1 of the present embodiment. FIG. 2 is a perspective view from above of the male connector 2 of the present embodiment.

  As shown in FIG. 1, the female connector 1 includes a substantially rectangular block-shaped terminal accommodating portion 11 that extends in the front-rear direction with a terminal cavity 11 a opened on the front surface, and the upper and lower and left and right side surfaces of the terminal accommodating portion 11. An insertion groove 13 is provided on the outer periphery of the terminal accommodating portion 11 so as to extend in the front-rear direction.

  Guide grooves 12 a for guiding the female connector 1 inserted into and removed from the mating male connector 2 are formed on the upper and lower and left and right side walls of the outer fitting portion 12. The guide groove 12 a extends in the front-rear direction on the inner surface of the side wall of the outer fitting portion 12. The guide groove 12a on the side wall on the upper side of the outer fitting portion 12 is formed wider than the other guide grooves 12a, and a locking hole 12c for locking the male connector 2 is formed at the center in the left-right direction. The outer fitting portion 12 extends through the side wall in the front-rear direction.

  As shown in FIG. 2, the male connector 2 is configured to include a substantially square cylindrical insertion portion 21 that extends rearward from a bottom surface 20 from which a terminal 22 protrudes rearward. Guide ridges 21 a for guiding the female connector 1 inserted into and removed from the male connector 2 are formed on the upper and lower and left and right side walls of the insertion portion 21. The guide ridge 21 a extends in the front-rear direction on the outer surface of the side wall of the insertion portion 21. Further, from the outer surface of the upper side wall of the insertion portion 21, a lock portion 21b that locks in the locking hole 12c of the female connector 1 and restricts the detachment of the female connector 1 from the male connector 2 protrudes upward. .

  In addition, on the upper and lower and left and right side walls of the insertion portion 21, a clamping portion 23 that clamps the packing 3 described later between the female connector 1 is provided. The clamping part 23 is configured by reducing the inner diameter of the insertion part 21 from the bottom surface 20 of the male connector 2 to the center part in the front-rear direction, and making the side wall of the insertion part 21 thick. The rear end surface of the clamping part 23 extends in an annular shape along the direction in which the upper and lower and left and right side walls of the insertion part 21 are continuous, and is formed flat.

  3A and 3B are views showing the packing 3 interposed between the female connector 1 and the male connector 2, wherein FIG. 3A is a rear perspective view and FIG. 3B is a longitudinal sectional view. FIG. 4 is a longitudinal sectional view showing a state in which the packing 3 is attached to the female connector 1.

  As shown in FIG. 3, the packing 3 has a substantially square cylindrical shape, and is configured by providing a resin-made vibration absorbing portion 32 at the front edge of a rubber waterproof portion 31. The waterproof part 31 includes a thick part 31a formed thick at a plurality of locations in the front-rear direction. Each thick part 31a keeps the space | interval mutually equal, is extended cyclically | annularly along the circumferential direction of the waterproof part 31, and seals the front side and rear side of the thick part 31a.

  As shown in FIG. 4, the packing 3 is externally fitted to the terminal accommodating portion 11 of the female connector 1 and is accommodated in the insertion groove 13. An abutting portion 11 b that abuts on the rear surface of the packing 3 and restricts rearward movement is provided at the rear end portion of the terminal accommodating portion 11. The contact portion 11b is configured by expanding the outer diameter of the terminal accommodating portion 11 from the bottom surface of the insertion groove 13 toward the front. The front end surface of the contact portion 11b extends in a ring shape along a direction in which the upper and lower and left and right side surfaces of the terminal accommodating portion 11 are continuous, and is formed flat. The packing 3 accommodated in the insertion groove 13 is positioned in the front-rear direction by bringing the rear end face into contact with the front end face of the contact portion 11b.

  When the female connector 1 to which the packing 3 is attached is pushed into the male connector 2 from the front side so that the insertion portion 21 of the male connector 2 shown in FIG. 2 is inserted into the insertion groove 13, the guide protrusion 21 a of the insertion portion 21. The guide groove 12a of the outer fitting portion 12 is fitted to the outer fitting portion 12 to be guided by positioning in the vertical and horizontal directions, and moved forward to be attached to the male connector 2. The female connector 1 attached to the male connector 2 is disengaged from the male connector 2 when the locking hole 12c is locked by the lock portion 21b that has entered the locking hole 12c and the backward movement is restricted. Is prevented.

  FIG. 5 is a cross-sectional view showing a state in which the packing 3 is interposed between the female connector 1 and the male connector 2. FIG. 6 is a view showing the packing 3 interposed between the female connector 1 and the male connector 2, and is a schematic view showing an enlarged range indicated by a frame C in FIG. 5.

  As shown in FIGS. 5 and 6, when the packing 3 externally fitted to the terminal accommodating portion 11 of the female connector 1 is sandwiched in the front-rear direction by the abutting portion 11 b and the sandwiching portion 23, the waterproof portion made of rubber is used. 31 is compressed in the front-rear direction and elastically deformed, and widens in the vertical and horizontal directions as a whole. As a result, the packing 3 urges the female connector 1 and the male connector 2 in the disengagement direction via the contact portion 11b and the clamping portion 23 by the elastic force exerted by the elastically deformable waterproof portion 31, and the locking hole 12c. The female connector 1 and the male connector 2 are positioned in the front-rear direction in a state where the insertion portion 21b is firmly locked. Further, the packing 3 has a waterproof portion 31 widened in the vertical and horizontal width directions strongly sandwiched between the terminal accommodating portion 11 and the insertion portion 21, and the female connector 1 and the male connector via the terminal accommodating portion 11 and the insertion portion 21. The connector 2 is also positioned in the vertical and horizontal directions.

  Further, when vibration occurs in the female connector 1 and the male connector 2 and a force that tilts in the vertical and horizontal directions with respect to the male connector 2 acts on the female connector 1, the female connector 1 and the male connector 2 are externally fitted to the terminal accommodating portion 11. A large load is applied to a part of the packing 3 integrated with the terminal 1 and extending annularly along the side surface of the terminal accommodating portion 11 from the clamping portion 23 of the male connector 2. The load applied from the clamping part 23 is transmitted to a wide range in the vertical and horizontal directions of the waterproof part 31 via a resin vibration absorbing part 32 located on the front end side of the packing 3, and the waterproof part 31 in a wider range. Is elastically deformed. Thereby, the load applied to the packing 3 due to the vibration is absorbed not only in the portion where the load is directly applied from the male connector 2 but also in a wide range of the waterproof portion 31.

  According to the present embodiment, the packing 3 sandwiched between the female connector 1 and the male connector 2 by being sandwiched between the female connector 1 and the male connector 2 is sufficiently elastically deformed to cause the female connector 1. And the male connector 2 can be firmly positioned, and the influence produced by the play between the female connector 1 and the male connector 2 on the electrical contact between them can be suppressed.

  Further, according to the present embodiment, the load applied from the male connector to the resin-made vibration absorbing portion 32 is absorbed in a wider range than the portion to which the load is directly applied. 2 can be more effectively absorbed.

  Further, since the waterproof part 31 and the vibration absorbing part 32 are integrated to form the packing 3, the impact applied to the vibration absorbing part 32 by interlocking the interlocking waterproof part 31 and the vibration absorbing part 32. Can be reliably absorbed by the waterproof portion 31. Further, since the resin shock absorbing portion 32 is arranged facing the mounting direction of the male connector 2, the male connector 2 can be mounted without increasing the insertion force of the male connector 2 so much. .

  In the above embodiment, the case where the packing 3 is sandwiched between the contact portion 11b of the terminal accommodating portion 11 and the sandwiching portion 23 of the insertion portion 21 has been described. However, the female connector 1 and the male connector 2 are sandwiched in the insertion / removal direction. If this is the case, the packing method of the packing 3 is arbitrary. Even if the packing 3 is clamped between the bottom surface of the insertion groove 13 and the clamping portion 23, the contact portion 11b of the terminal accommodating portion 11 and the male connector 2 It may be sandwiched between the bottom surface 20. Moreover, the mounting method of the female connector 1 and the male connector 2 is also arbitrary, for example, the female connector 1 does not need to be provided with the external fitting part 12. FIG. Further, the packing 3 does not necessarily have to include the impact absorbing portion 32.

It is a perspective view from the upper part of the female connector of one embodiment of the present invention. It is a perspective view from the upper part of the male connector of one embodiment of the present invention. It is a figure which shows the packing interposed between a female connector and a male connector, (a) is a perspective view from back, (b) is a longitudinal cross-sectional view. It is a longitudinal cross-sectional view which shows the state by which packing was attached to the female connector. It is sectional drawing which shows the state by which packing was interposed between the female connector and the male connector. It is a figure which shows the packing interposed between the female connector and the male connector, and is a schematic diagram which expands and shows the range shown by the frame C of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Female connector 11 Terminal accommodating part 11a Terminal cavity 11b Contact part 12 Outer fitting part 12a Guide groove 12c Locking hole 13 Insertion groove 2 Male connector 20 Bottom face 21 Insertion part 21a Guide protrusion 21b Lock part 22 Terminal 23 Holding part 3 Packing 31 Waterproof part 31a Thick part 32 Vibration absorbing part

Claims (3)

It is a connector sealing structure that seals by fitting a female connector to a male connector via a packing,
A seal structure for a connector, wherein the packing is interposed between the male connector and the female connector by sandwiching the packing between the male connector and the female connector in the insertion / removal direction. The packing is located on one side in the clamping direction by the male connector and the female connector, and a rubber portion that is pressed from either the male connector or the female connector;
The resin part which is integrated with the rubber part and is located on the other side in the holding direction by the male connector and the female connector and is pressed from the other male connector or the female connector. The connector seal structure according to 1.   The packing according to claim 2.

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